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git svn: avoid uninitialized var in 'reset'
[git/dscho.git] / git-svn.perl
blobdc668034d0e3db11c41e8667db22205b95733421
1 #!/usr/bin/env perl
2 # Copyright (C) 2006, Eric Wong <normalperson@yhbt.net>
3 # License: GPL v2 or later
4 use warnings;
5 use strict;
6 use vars qw/ $AUTHOR $VERSION
7 $sha1 $sha1_short $_revision $_repository
8 $_q $_authors $_authors_prog %users/;
9 $AUTHOR = 'Eric Wong <normalperson@yhbt.net>';
10 $VERSION = '@@GIT_VERSION@@';
11
12 # From which subdir have we been invoked?
13 my $cmd_dir_prefix = eval {
14 command_oneline([qw/rev-parse --show-prefix/], STDERR => 0)
15 } || '';
16
17 my $git_dir_user_set = 1 if defined $ENV{GIT_DIR};
18 $ENV{GIT_DIR} ||= '.git';
19 $Git::SVN::default_repo_id = 'svn';
20 $Git::SVN::default_ref_id = $ENV{GIT_SVN_ID} || 'git-svn';
21 $Git::SVN::Ra::_log_window_size = 100;
22 $Git::SVN::_minimize_url = 'unset';
23
24 if (! exists $ENV{SVN_SSH}) {
25 if (exists $ENV{GIT_SSH}) {
26 $ENV{SVN_SSH} = $ENV{GIT_SSH};
27 if ($^O eq 'msys') {
28 $ENV{SVN_SSH} =~ s/\\/\\\\/g;
29 $ENV{SVN_SSH} =~ s/(.*)/"$1"/;
30 }
31 }
32 }
33
34 $Git::SVN::Log::TZ = $ENV{TZ};
35 $ENV{TZ} = 'UTC';
36 $| = 1; # unbuffer STDOUT
37
38 sub fatal (@) { print STDERR "@_\n"; exit 1 }
39 sub _req_svn {
40 require SVN::Core; # use()-ing this causes segfaults for me... *shrug*
41 require SVN::Ra;
42 require SVN::Delta;
43 if ($SVN::Core::VERSION lt '1.1.0') {
44 fatal "Need SVN::Core 1.1.0 or better (got $SVN::Core::VERSION)";
45 }
46 }
47 my $can_compress = eval { require Compress::Zlib; 1};
48 push @Git::SVN::Ra::ISA, 'SVN::Ra';
49 push @SVN::Git::Editor::ISA, 'SVN::Delta::Editor';
50 push @SVN::Git::Fetcher::ISA, 'SVN::Delta::Editor';
51 use Carp qw/croak/;
52 use Digest::MD5;
53 use IO::File qw//;
54 use File::Basename qw/dirname basename/;
55 use File::Path qw/mkpath/;
56 use File::Spec;
57 use File::Find;
58 use Getopt::Long qw/:config gnu_getopt no_ignore_case auto_abbrev/;
59 use IPC::Open3;
60 use Git;
61
62 BEGIN {
63 # import functions from Git into our packages, en masse
64 no strict 'refs';
65 foreach (qw/command command_oneline command_noisy command_output_pipe
66 command_input_pipe command_close_pipe
67 command_bidi_pipe command_close_bidi_pipe/) {
68 for my $package ( qw(SVN::Git::Editor SVN::Git::Fetcher
69 Git::SVN::Migration Git::SVN::Log Git::SVN),
70 __PACKAGE__) {
71 *{"${package}::$_"} = \&{"Git::$_"};
72 }
73 }
74 }
75
76 my ($SVN);
77
78 $sha1 = qr/[a-f\d]{40}/;
79 $sha1_short = qr/[a-f\d]{4,40}/;
80 my ($_stdin, $_help, $_edit,
81 $_message, $_file, $_branch_dest,
82 $_template, $_shared,
83 $_version, $_fetch_all, $_no_rebase, $_fetch_parent,
84 $_merge, $_strategy, $_dry_run, $_local,
85 $_prefix, $_no_checkout, $_url, $_verbose,
86 $_git_format, $_commit_url, $_tag);
87 $Git::SVN::_follow_parent = 1;
88 $_q ||= 0;
89 my %remote_opts = ( 'username=s' => \$Git::SVN::Prompt::_username,
90 'config-dir=s' => \$Git::SVN::Ra::config_dir,
91 'no-auth-cache' => \$Git::SVN::Prompt::_no_auth_cache,
92 'ignore-paths=s' => \$SVN::Git::Fetcher::_ignore_regex );
93 my %fc_opts = ( 'follow-parent|follow!' => \$Git::SVN::_follow_parent,
94 'authors-file|A=s' => \$_authors,
95 'authors-prog=s' => \$_authors_prog,
96 'repack:i' => \$Git::SVN::_repack,
97 'noMetadata' => \$Git::SVN::_no_metadata,
98 'useSvmProps' => \$Git::SVN::_use_svm_props,
99 'useSvnsyncProps' => \$Git::SVN::_use_svnsync_props,
100 'log-window-size=i' => \$Git::SVN::Ra::_log_window_size,
101 'no-checkout' => \$_no_checkout,
102 'quiet|q+' => \$_q,
103 'repack-flags|repack-args|repack-opts=s' =>
104 \$Git::SVN::_repack_flags,
105 'use-log-author' => \$Git::SVN::_use_log_author,
106 'add-author-from' => \$Git::SVN::_add_author_from,
107 'localtime' => \$Git::SVN::_localtime,
108 %remote_opts );
109
110 my ($_trunk, @_tags, @_branches, $_stdlayout);
111 my %icv;
112 my %init_opts = ( 'template=s' => \$_template, 'shared:s' => \$_shared,
113 'trunk|T=s' => \$_trunk, 'tags|t=s@' => \@_tags,
114 'branches|b=s@' => \@_branches, 'prefix=s' => \$_prefix,
115 'stdlayout|s' => \$_stdlayout,
116 'minimize-url|m!' => \$Git::SVN::_minimize_url,
117 'no-metadata' => sub { $icv{noMetadata} = 1 },
118 'use-svm-props' => sub { $icv{useSvmProps} = 1 },
119 'use-svnsync-props' => sub { $icv{useSvnsyncProps} = 1 },
120 'rewrite-root=s' => sub { $icv{rewriteRoot} = $_[1] },
121 'rewrite-uuid=s' => sub { $icv{rewriteUUID} = $_[1] },
122 %remote_opts );
123 my %cmt_opts = ( 'edit|e' => \$_edit,
124 'rmdir' => \$SVN::Git::Editor::_rmdir,
125 'find-copies-harder' => \$SVN::Git::Editor::_find_copies_harder,
126 'l=i' => \$SVN::Git::Editor::_rename_limit,
127 'copy-similarity|C=i'=> \$SVN::Git::Editor::_cp_similarity
128 );
129
130 my %cmd = (
131 fetch => [ \&cmd_fetch, "Download new revisions from SVN",
132 { 'revision|r=s' => \$_revision,
133 'fetch-all|all' => \$_fetch_all,
134 'parent|p' => \$_fetch_parent,
135 %fc_opts } ],
136 clone => [ \&cmd_clone, "Initialize and fetch revisions",
137 { 'revision|r=s' => \$_revision,
138 %fc_opts, %init_opts } ],
139 init => [ \&cmd_init, "Initialize a repo for tracking" .
140 " (requires URL argument)",
141 \%init_opts ],
142 'multi-init' => [ \&cmd_multi_init,
143 "Deprecated alias for ".
144 "'$0 init -T<trunk> -b<branches> -t<tags>'",
145 \%init_opts ],
146 dcommit => [ \&cmd_dcommit,
147 'Commit several diffs to merge with upstream',
148 { 'merge|m|M' => \$_merge,
149 'strategy|s=s' => \$_strategy,
150 'verbose|v' => \$_verbose,
151 'dry-run|n' => \$_dry_run,
152 'fetch-all|all' => \$_fetch_all,
153 'commit-url=s' => \$_commit_url,
154 'revision|r=i' => \$_revision,
155 'no-rebase' => \$_no_rebase,
156 %cmt_opts, %fc_opts } ],
157 branch => [ \&cmd_branch,
158 'Create a branch in the SVN repository',
159 { 'message|m=s' => \$_message,
160 'destination|d=s' => \$_branch_dest,
161 'dry-run|n' => \$_dry_run,
162 'tag|t' => \$_tag,
163 'username=s' => \$Git::SVN::Prompt::_username,
164 'commit-url=s' => \$_commit_url } ],
165 tag => [ sub { $_tag = 1; cmd_branch(@_) },
166 'Create a tag in the SVN repository',
167 { 'message|m=s' => \$_message,
168 'destination|d=s' => \$_branch_dest,
169 'dry-run|n' => \$_dry_run,
170 'username=s' => \$Git::SVN::Prompt::_username,
171 'commit-url=s' => \$_commit_url } ],
172 'set-tree' => [ \&cmd_set_tree,
173 "Set an SVN repository to a git tree-ish",
174 { 'stdin' => \$_stdin, %cmt_opts, %fc_opts, } ],
175 'create-ignore' => [ \&cmd_create_ignore,
176 'Create a .gitignore per svn:ignore',
177 { 'revision|r=i' => \$_revision
178 } ],
179 'mkdirs' => [ \&cmd_mkdirs ,
180 "recreate empty directories after a checkout",
181 { 'revision|r=i' => \$_revision } ],
182 'propget' => [ \&cmd_propget,
183 'Print the value of a property on a file or directory',
184 { 'revision|r=i' => \$_revision } ],
185 'proplist' => [ \&cmd_proplist,
186 'List all properties of a file or directory',
187 { 'revision|r=i' => \$_revision } ],
188 'show-ignore' => [ \&cmd_show_ignore, "Show svn:ignore listings",
189 { 'revision|r=i' => \$_revision
190 } ],
191 'show-externals' => [ \&cmd_show_externals, "Show svn:externals listings",
192 { 'revision|r=i' => \$_revision
193 } ],
194 'multi-fetch' => [ \&cmd_multi_fetch,
195 "Deprecated alias for $0 fetch --all",
196 { 'revision|r=s' => \$_revision, %fc_opts } ],
197 'migrate' => [ sub { },
198 # no-op, we automatically run this anyways,
199 'Migrate configuration/metadata/layout from
200 previous versions of git-svn',
201 { 'minimize' => \$Git::SVN::Migration::_minimize,
202 %remote_opts } ],
203 'log' => [ \&Git::SVN::Log::cmd_show_log, 'Show commit logs',
204 { 'limit=i' => \$Git::SVN::Log::limit,
205 'revision|r=s' => \$_revision,
206 'verbose|v' => \$Git::SVN::Log::verbose,
207 'incremental' => \$Git::SVN::Log::incremental,
208 'oneline' => \$Git::SVN::Log::oneline,
209 'show-commit' => \$Git::SVN::Log::show_commit,
210 'non-recursive' => \$Git::SVN::Log::non_recursive,
211 'authors-file|A=s' => \$_authors,
212 'color' => \$Git::SVN::Log::color,
213 'pager=s' => \$Git::SVN::Log::pager
214 } ],
215 'find-rev' => [ \&cmd_find_rev,
216 "Translate between SVN revision numbers and tree-ish",
217 {} ],
218 'rebase' => [ \&cmd_rebase, "Fetch and rebase your working directory",
219 { 'merge|m|M' => \$_merge,
220 'verbose|v' => \$_verbose,
221 'strategy|s=s' => \$_strategy,
222 'local|l' => \$_local,
223 'fetch-all|all' => \$_fetch_all,
224 'dry-run|n' => \$_dry_run,
225 %fc_opts } ],
226 'commit-diff' => [ \&cmd_commit_diff,
227 'Commit a diff between two trees',
228 { 'message|m=s' => \$_message,
229 'file|F=s' => \$_file,
230 'revision|r=s' => \$_revision,
231 %cmt_opts } ],
232 'info' => [ \&cmd_info,
233 "Show info about the latest SVN revision
234 on the current branch",
235 { 'url' => \$_url, } ],
236 'blame' => [ \&Git::SVN::Log::cmd_blame,
237 "Show what revision and author last modified each line of a file",
238 { 'git-format' => \$_git_format } ],
239 'reset' => [ \&cmd_reset,
240 "Undo fetches back to the specified SVN revision",
241 { 'revision|r=s' => \$_revision,
242 'parent|p' => \$_fetch_parent } ],
243 'gc' => [ \&cmd_gc,
244 "Compress unhandled.log files in .git/svn and remove " .
245 "index files in .git/svn",
246 {} ],
247 );
248
249 my $cmd;
250 for (my $i = 0; $i < @ARGV; $i++) {
251 if (defined $cmd{$ARGV[$i]}) {
252 $cmd = $ARGV[$i];
253 splice @ARGV, $i, 1;
254 last;
255 } elsif ($ARGV[$i] eq 'help') {
256 $cmd = $ARGV[$i+1];
257 usage(0);
258 }
259 };
260
261 # make sure we're always running at the top-level working directory
262 unless ($cmd && $cmd =~ /(?:clone|init|multi-init)$/) {
263 unless (-d $ENV{GIT_DIR}) {
264 if ($git_dir_user_set) {
265 die "GIT_DIR=$ENV{GIT_DIR} explicitly set, ",
266 "but it is not a directory\n";
267 }
268 my $git_dir = delete $ENV{GIT_DIR};
269 my $cdup = undef;
270 git_cmd_try {
271 $cdup = command_oneline(qw/rev-parse --show-cdup/);
272 $git_dir = '.' unless ($cdup);
273 chomp $cdup if ($cdup);
274 $cdup = "." unless ($cdup && length $cdup);
275 } "Already at toplevel, but $git_dir not found\n";
276 chdir $cdup or die "Unable to chdir up to '$cdup'\n";
277 unless (-d $git_dir) {
278 die "$git_dir still not found after going to ",
279 "'$cdup'\n";
280 }
281 $ENV{GIT_DIR} = $git_dir;
282 }
283 $_repository = Git->repository(Repository => $ENV{GIT_DIR});
284 }
285
286 my %opts = %{$cmd{$cmd}->[2]} if (defined $cmd);
287
288 read_git_config(\%opts);
289 if ($cmd && ($cmd eq 'log' || $cmd eq 'blame')) {
290 Getopt::Long::Configure('pass_through');
291 }
292 my $rv = GetOptions(%opts, 'help|H|h' => \$_help, 'version|V' => \$_version,
293 'minimize-connections' => \$Git::SVN::Migration::_minimize,
294 'id|i=s' => \$Git::SVN::default_ref_id,
295 'svn-remote|remote|R=s' => sub {
296 $Git::SVN::no_reuse_existing = 1;
297 $Git::SVN::default_repo_id = $_[1] });
298 exit 1 if (!$rv && $cmd && $cmd ne 'log');
299
300 usage(0) if $_help;
301 version() if $_version;
302 usage(1) unless defined $cmd;
303 load_authors() if $_authors;
304 if (defined $_authors_prog) {
305 $_authors_prog = "'" . File::Spec->rel2abs($_authors_prog) . "'";
306 }
307
308 unless ($cmd =~ /^(?:clone|init|multi-init|commit-diff)$/) {
309 Git::SVN::Migration::migration_check();
310 }
311 Git::SVN::init_vars();
312 eval {
313 Git::SVN::verify_remotes_sanity();
314 $cmd{$cmd}->[0]->(@ARGV);
315 };
316 fatal $@ if $@;
317 post_fetch_checkout();
318 exit 0;
319
320 ####################### primary functions ######################
321 sub usage {
322 my $exit = shift || 0;
323 my $fd = $exit ? \*STDERR : \*STDOUT;
324 print $fd <<"";
325 git-svn - bidirectional operations between a single Subversion tree and git
326 Usage: git svn <command> [options] [arguments]\n
327
328 print $fd "Available commands:\n" unless $cmd;
329
330 foreach (sort keys %cmd) {
331 next if $cmd && $cmd ne $_;
332 next if /^multi-/; # don't show deprecated commands
333 print $fd ' ',pack('A17',$_),$cmd{$_}->[1],"\n";
334 foreach (sort keys %{$cmd{$_}->[2]}) {
335 # mixed-case options are for .git/config only
336 next if /[A-Z]/ && /^[a-z]+$/i;
337 # prints out arguments as they should be passed:
338 my $x = s#[:=]s$## ? '<arg>' : s#[:=]i$## ? '<num>' : '';
339 print $fd ' ' x 21, join(', ', map { length $_ > 1 ?
340 "--$_" : "-$_" }
341 split /\|/,$_)," $x\n";
342 }
343 }
344 print $fd <<"";
345 \nGIT_SVN_ID may be set in the environment or via the --id/-i switch to an
346 arbitrary identifier if you're tracking multiple SVN branches/repositories in
347 one git repository and want to keep them separate. See git-svn(1) for more
348 information.
349
350 exit $exit;
351 }
352
353 sub version {
354 ::_req_svn();
355 print "git-svn version $VERSION (svn $SVN::Core::VERSION)\n";
356 exit 0;
357 }
358
359 sub do_git_init_db {
360 unless (-d $ENV{GIT_DIR}) {
361 my @init_db = ('init');
362 push @init_db, "--template=$_template" if defined $_template;
363 if (defined $_shared) {
364 if ($_shared =~ /[a-z]/) {
365 push @init_db, "--shared=$_shared";
366 } else {
367 push @init_db, "--shared";
368 }
369 }
370 command_noisy(@init_db);
371 $_repository = Git->repository(Repository => ".git");
372 }
373 my $set;
374 my $pfx = "svn-remote.$Git::SVN::default_repo_id";
375 foreach my $i (keys %icv) {
376 die "'$set' and '$i' cannot both be set\n" if $set;
377 next unless defined $icv{$i};
378 command_noisy('config', "$pfx.$i", $icv{$i});
379 $set = $i;
380 }
381 my $ignore_regex = \$SVN::Git::Fetcher::_ignore_regex;
382 command_noisy('config', "$pfx.ignore-paths", $$ignore_regex)
383 if defined $$ignore_regex;
384 }
385
386 sub init_subdir {
387 my $repo_path = shift or return;
388 mkpath([$repo_path]) unless -d $repo_path;
389 chdir $repo_path or die "Couldn't chdir to $repo_path: $!\n";
390 $ENV{GIT_DIR} = '.git';
391 $_repository = Git->repository(Repository => $ENV{GIT_DIR});
392 }
393
394 sub cmd_clone {
395 my ($url, $path) = @_;
396 if (!defined $path &&
397 (defined $_trunk || @_branches || @_tags ||
398 defined $_stdlayout) &&
399 $url !~ m#^[a-z\+]+://#) {
400 $path = $url;
401 }
402 $path = basename($url) if !defined $path || !length $path;
403 my $authors_absolute = $_authors ? File::Spec->rel2abs($_authors) : "";
404 cmd_init($url, $path);
405 command_oneline('config', 'svn.authorsfile', $authors_absolute)
406 if $_authors;
407 Git::SVN::fetch_all($Git::SVN::default_repo_id);
408 }
409
410 sub cmd_init {
411 if (defined $_stdlayout) {
412 $_trunk = 'trunk' if (!defined $_trunk);
413 @_tags = 'tags' if (! @_tags);
414 @_branches = 'branches' if (! @_branches);
415 }
416 if (defined $_trunk || @_branches || @_tags) {
417 return cmd_multi_init(@_);
418 }
419 my $url = shift or die "SVN repository location required ",
420 "as a command-line argument\n";
421 $url = canonicalize_url($url);
422 init_subdir(@_);
423 do_git_init_db();
424
425 if ($Git::SVN::_minimize_url eq 'unset') {
426 $Git::SVN::_minimize_url = 0;
427 }
428
429 Git::SVN->init($url);
430 }
431
432 sub cmd_fetch {
433 if (grep /^\d+=./, @_) {
434 die "'<rev>=<commit>' fetch arguments are ",
435 "no longer supported.\n";
436 }
437 my ($remote) = @_;
438 if (@_ > 1) {
439 die "Usage: $0 fetch [--all] [--parent] [svn-remote]\n";
440 }
441 $Git::SVN::no_reuse_existing = undef;
442 if ($_fetch_parent) {
443 my ($url, $rev, $uuid, $gs) = working_head_info('HEAD');
444 unless ($gs) {
445 die "Unable to determine upstream SVN information from ",
446 "working tree history\n";
447 }
448 # just fetch, don't checkout.
449 $_no_checkout = 'true';
450 $_fetch_all ? $gs->fetch_all : $gs->fetch;
451 } elsif ($_fetch_all) {
452 cmd_multi_fetch();
453 } else {
454 $remote ||= $Git::SVN::default_repo_id;
455 Git::SVN::fetch_all($remote, Git::SVN::read_all_remotes());
456 }
457 }
458
459 sub cmd_set_tree {
460 my (@commits) = @_;
461 if ($_stdin || !@commits) {
462 print "Reading from stdin...\n";
463 @commits = ();
464 while (<STDIN>) {
465 if (/\b($sha1_short)\b/o) {
466 unshift @commits, $1;
467 }
468 }
469 }
470 my @revs;
471 foreach my $c (@commits) {
472 my @tmp = command('rev-parse',$c);
473 if (scalar @tmp == 1) {
474 push @revs, $tmp[0];
475 } elsif (scalar @tmp > 1) {
476 push @revs, reverse(command('rev-list',@tmp));
477 } else {
478 fatal "Failed to rev-parse $c";
479 }
480 }
481 my $gs = Git::SVN->new;
482 my ($r_last, $cmt_last) = $gs->last_rev_commit;
483 $gs->fetch;
484 if (defined $gs->{last_rev} && $r_last != $gs->{last_rev}) {
485 fatal "There are new revisions that were fetched ",
486 "and need to be merged (or acknowledged) ",
487 "before committing.\nlast rev: $r_last\n",
488 " current: $gs->{last_rev}";
489 }
490 $gs->set_tree($_) foreach @revs;
491 print "Done committing ",scalar @revs," revisions to SVN\n";
492 unlink $gs->{index};
493 }
494
495 sub cmd_dcommit {
496 my $head = shift;
497 git_cmd_try { command_oneline(qw/diff-index --quiet HEAD/) }
498 'Cannot dcommit with a dirty index. Commit your changes first, '
499 . "or stash them with `git stash'.\n";
500 $head ||= 'HEAD';
501
502 my $old_head;
503 if ($head ne 'HEAD') {
504 $old_head = eval {
505 command_oneline([qw/symbolic-ref -q HEAD/])
506 };
507 if ($old_head) {
508 $old_head =~ s{^refs/heads/}{};
509 } else {
510 $old_head = eval { command_oneline(qw/rev-parse HEAD/) };
511 }
512 command(['checkout', $head], STDERR => 0);
513 }
514
515 my @refs;
516 my ($url, $rev, $uuid, $gs) = working_head_info('HEAD', \@refs);
517 unless ($gs) {
518 die "Unable to determine upstream SVN information from ",
519 "$head history.\nPerhaps the repository is empty.";
520 }
521
522 if (defined $_commit_url) {
523 $url = $_commit_url;
524 } else {
525 $url = eval { command_oneline('config', '--get',
526 "svn-remote.$gs->{repo_id}.commiturl") };
527 if (!$url) {
528 $url = $gs->full_url
529 }
530 }
531
532 my $last_rev = $_revision if defined $_revision;
533 if ($url) {
534 print "Committing to $url ...\n";
535 }
536 my ($linear_refs, $parents) = linearize_history($gs, \@refs);
537 if ($_no_rebase && scalar(@$linear_refs) > 1) {
538 warn "Attempting to commit more than one change while ",
539 "--no-rebase is enabled.\n",
540 "If these changes depend on each other, re-running ",
541 "without --no-rebase may be required."
542 }
543 my $expect_url = $url;
544 Git::SVN::remove_username($expect_url);
545 while (1) {
546 my $d = shift @$linear_refs or last;
547 unless (defined $last_rev) {
548 (undef, $last_rev, undef) = cmt_metadata("$d~1");
549 unless (defined $last_rev) {
550 fatal "Unable to extract revision information ",
551 "from commit $d~1";
552 }
553 }
554 if ($_dry_run) {
555 print "diff-tree $d~1 $d\n";
556 } else {
557 my $cmt_rev;
558 my %ed_opts = ( r => $last_rev,
559 log => get_commit_entry($d)->{log},
560 ra => Git::SVN::Ra->new($url),
561 config => SVN::Core::config_get_config(
562 $Git::SVN::Ra::config_dir
563 ),
564 tree_a => "$d~1",
565 tree_b => $d,
566 editor_cb => sub {
567 print "Committed r$_[0]\n";
568 $cmt_rev = $_[0];
569 },
570 svn_path => '');
571 if (!SVN::Git::Editor->new(\%ed_opts)->apply_diff) {
572 print "No changes\n$d~1 == $d\n";
573 } elsif ($parents->{$d} && @{$parents->{$d}}) {
574 $gs->{inject_parents_dcommit}->{$cmt_rev} =
575 $parents->{$d};
576 }
577 $_fetch_all ? $gs->fetch_all : $gs->fetch;
578 $last_rev = $cmt_rev;
579 next if $_no_rebase;
580
581 # we always want to rebase against the current HEAD,
582 # not any head that was passed to us
583 my @diff = command('diff-tree', $d,
584 $gs->refname, '--');
585 my @finish;
586 if (@diff) {
587 @finish = rebase_cmd();
588 print STDERR "W: $d and ", $gs->refname,
589 " differ, using @finish:\n",
590 join("\n", @diff), "\n";
591 } else {
592 print "No changes between current HEAD and ",
593 $gs->refname,
594 "\nResetting to the latest ",
595 $gs->refname, "\n";
596 @finish = qw/reset --mixed/;
597 }
598 command_noisy(@finish, $gs->refname);
599 if (@diff) {
600 @refs = ();
601 my ($url_, $rev_, $uuid_, $gs_) =
602 working_head_info('HEAD', \@refs);
603 my ($linear_refs_, $parents_) =
604 linearize_history($gs_, \@refs);
605 if (scalar(@$linear_refs) !=
606 scalar(@$linear_refs_)) {
607 fatal "# of revisions changed ",
608 "\nbefore:\n",
609 join("\n", @$linear_refs),
610 "\n\nafter:\n",
611 join("\n", @$linear_refs_), "\n",
612 'If you are attempting to commit ',
613 "merges, try running:\n\t",
614 'git rebase --interactive',
615 '--preserve-merges ',
616 $gs->refname,
617 "\nBefore dcommitting";
618 }
619 if ($url_ ne $expect_url) {
620 if ($url_ eq $gs->metadata_url) {
621 print
622 "Accepting rewritten URL:",
623 " $url_\n";
624 } else {
625 fatal
626 "URL mismatch after rebase:",
627 " $url_ != $expect_url";
628 }
629 }
630 if ($uuid_ ne $uuid) {
631 fatal "uuid mismatch after rebase: ",
632 "$uuid_ != $uuid";
633 }
634 # remap parents
635 my (%p, @l, $i);
636 for ($i = 0; $i < scalar @$linear_refs; $i++) {
637 my $new = $linear_refs_->[$i] or next;
638 $p{$new} =
639 $parents->{$linear_refs->[$i]};
640 push @l, $new;
641 }
642 $parents = \%p;
643 $linear_refs = \@l;
644 }
645 }
646 }
647
648 if ($old_head) {
649 my $new_head = command_oneline(qw/rev-parse HEAD/);
650 my $new_is_symbolic = eval {
651 command_oneline(qw/symbolic-ref -q HEAD/);
652 };
653 if ($new_is_symbolic) {
654 print "dcommitted the branch ", $head, "\n";
655 } else {
656 print "dcommitted on a detached HEAD because you gave ",
657 "a revision argument.\n",
658 "The rewritten commit is: ", $new_head, "\n";
659 }
660 command(['checkout', $old_head], STDERR => 0);
661 }
662
663 unlink $gs->{index};
664 }
665
666 sub cmd_branch {
667 my ($branch_name, $head) = @_;
668
669 unless (defined $branch_name && length $branch_name) {
670 die(($_tag ? "tag" : "branch") . " name required\n");
671 }
672 $head ||= 'HEAD';
673
674 my (undef, $rev, undef, $gs) = working_head_info($head);
675 my $src = $gs->full_url;
676
677 my $remote = Git::SVN::read_all_remotes()->{$gs->{repo_id}};
678 my $allglobs = $remote->{ $_tag ? 'tags' : 'branches' };
679 my $glob;
680 if ($#{$allglobs} == 0) {
681 $glob = $allglobs->[0];
682 } else {
683 unless(defined $_branch_dest) {
684 die "Multiple ",
685 $_tag ? "tag" : "branch",
686 " paths defined for Subversion repository.\n",
687 "You must specify where you want to create the ",
688 $_tag ? "tag" : "branch",
689 " with the --destination argument.\n";
690 }
691 foreach my $g (@{$allglobs}) {
692 # SVN::Git::Editor could probably be moved to Git.pm..
693 my $re = SVN::Git::Editor::glob2pat($g->{path}->{left});
694 if ($_branch_dest =~ /$re/) {
695 $glob = $g;
696 last;
697 }
698 }
699 unless (defined $glob) {
700 my $dest_re = qr/\b\Q$_branch_dest\E\b/;
701 foreach my $g (@{$allglobs}) {
702 $g->{path}->{left} =~ /$dest_re/ or next;
703 if (defined $glob) {
704 die "Ambiguous destination: ",
705 $_branch_dest, "\nmatches both '",
706 $glob->{path}->{left}, "' and '",
707 $g->{path}->{left}, "'\n";
708 }
709 $glob = $g;
710 }
711 unless (defined $glob) {
712 die "Unknown ",
713 $_tag ? "tag" : "branch",
714 " destination $_branch_dest\n";
715 }
716 }
717 }
718 my ($lft, $rgt) = @{ $glob->{path} }{qw/left right/};
719 my $url;
720 if (defined $_commit_url) {
721 $url = $_commit_url;
722 } else {
723 $url = eval { command_oneline('config', '--get',
724 "svn-remote.$gs->{repo_id}.commiturl") };
725 if (!$url) {
726 $url = $remote->{url};
727 }
728 }
729 my $dst = join '/', $url, $lft, $branch_name, ($rgt || ());
730
731 if ($dst =~ /^https:/ && $src =~ /^http:/) {
732 $src=~s/^http:/https:/;
733 }
734
735 ::_req_svn();
736
737 my $ctx = SVN::Client->new(
738 auth => Git::SVN::Ra::_auth_providers(),
739 log_msg => sub {
740 ${ $_[0] } = defined $_message
741 ? $_message
742 : 'Create ' . ($_tag ? 'tag ' : 'branch ' )
743 . $branch_name;
744 },
745 );
746
747 eval {
748 $ctx->ls($dst, 'HEAD', 0);
749 } and die "branch ${branch_name} already exists\n";
750
751 print "Copying ${src} at r${rev} to ${dst}...\n";
752 $ctx->copy($src, $rev, $dst)
753 unless $_dry_run;
754
755 $gs->fetch_all;
756 }
757
758 sub cmd_find_rev {
759 my $revision_or_hash = shift or die "SVN or git revision required ",
760 "as a command-line argument\n";
761 my $result;
762 if ($revision_or_hash =~ /^r\d+$/) {
763 my $head = shift;
764 $head ||= 'HEAD';
765 my @refs;
766 my (undef, undef, $uuid, $gs) = working_head_info($head, \@refs);
767 unless ($gs) {
768 die "Unable to determine upstream SVN information from ",
769 "$head history\n";
770 }
771 my $desired_revision = substr($revision_or_hash, 1);
772 $result = $gs->rev_map_get($desired_revision, $uuid);
773 } else {
774 my (undef, $rev, undef) = cmt_metadata($revision_or_hash);
775 $result = $rev;
776 }
777 print "$result\n" if $result;
778 }
779
780 sub cmd_rebase {
781 command_noisy(qw/update-index --refresh/);
782 my ($url, $rev, $uuid, $gs) = working_head_info('HEAD');
783 unless ($gs) {
784 die "Unable to determine upstream SVN information from ",
785 "working tree history\n";
786 }
787 if ($_dry_run) {
788 print "Remote Branch: " . $gs->refname . "\n";
789 print "SVN URL: " . $url . "\n";
790 return;
791 }
792 if (command(qw/diff-index HEAD --/)) {
793 print STDERR "Cannot rebase with uncommited changes:\n";
794 command_noisy('status');
795 exit 1;
796 }
797 unless ($_local) {
798 # rebase will checkout for us, so no need to do it explicitly
799 $_no_checkout = 'true';
800 $_fetch_all ? $gs->fetch_all : $gs->fetch;
801 }
802 command_noisy(rebase_cmd(), $gs->refname);
803 $gs->mkemptydirs;
804 }
805
806 sub cmd_show_ignore {
807 my ($url, $rev, $uuid, $gs) = working_head_info('HEAD');
808 $gs ||= Git::SVN->new;
809 my $r = (defined $_revision ? $_revision : $gs->ra->get_latest_revnum);
810 $gs->prop_walk($gs->{path}, $r, sub {
811 my ($gs, $path, $props) = @_;
812 print STDOUT "\n# $path\n";
813 my $s = $props->{'svn:ignore'} or return;
814 $s =~ s/[\r\n]+/\n/g;
815 $s =~ s/^\n+//;
816 chomp $s;
817 $s =~ s#^#$path#gm;
818 print STDOUT "$s\n";
819 });
820 }
821
822 sub cmd_show_externals {
823 my ($url, $rev, $uuid, $gs) = working_head_info('HEAD');
824 $gs ||= Git::SVN->new;
825 my $r = (defined $_revision ? $_revision : $gs->ra->get_latest_revnum);
826 $gs->prop_walk($gs->{path}, $r, sub {
827 my ($gs, $path, $props) = @_;
828 print STDOUT "\n# $path\n";
829 my $s = $props->{'svn:externals'} or return;
830 $s =~ s/[\r\n]+/\n/g;
831 chomp $s;
832 $s =~ s#^#$path#gm;
833 print STDOUT "$s\n";
834 });
835 }
836
837 sub cmd_create_ignore {
838 my ($url, $rev, $uuid, $gs) = working_head_info('HEAD');
839 $gs ||= Git::SVN->new;
840 my $r = (defined $_revision ? $_revision : $gs->ra->get_latest_revnum);
841 $gs->prop_walk($gs->{path}, $r, sub {
842 my ($gs, $path, $props) = @_;
843 # $path is of the form /path/to/dir/
844 $path = '.' . $path;
845 # SVN can have attributes on empty directories,
846 # which git won't track
847 mkpath([$path]) unless -d $path;
848 my $ignore = $path . '.gitignore';
849 my $s = $props->{'svn:ignore'} or return;
850 open(GITIGNORE, '>', $ignore)
851 or fatal("Failed to open `$ignore' for writing: $!");
852 $s =~ s/[\r\n]+/\n/g;
853 $s =~ s/^\n+//;
854 chomp $s;
855 # Prefix all patterns so that the ignore doesn't apply
856 # to sub-directories.
857 $s =~ s#^#/#gm;
858 print GITIGNORE "$s\n";
859 close(GITIGNORE)
860 or fatal("Failed to close `$ignore': $!");
861 command_noisy('add', '-f', $ignore);
862 });
863 }
864
865 sub cmd_mkdirs {
866 my ($url, $rev, $uuid, $gs) = working_head_info('HEAD');
867 $gs ||= Git::SVN->new;
868 $gs->mkemptydirs($_revision);
869 }
870
871 sub canonicalize_path {
872 my ($path) = @_;
873 my $dot_slash_added = 0;
874 if (substr($path, 0, 1) ne "/") {
875 $path = "./" . $path;
876 $dot_slash_added = 1;
877 }
878 # File::Spec->canonpath doesn't collapse x/../y into y (for a
879 # good reason), so let's do this manually.
880 $path =~ s#/+#/#g;
881 $path =~ s#/\.(?:/|$)#/#g;
882 $path =~ s#/[^/]+/\.\.##g;
883 $path =~ s#/$##g;
884 $path =~ s#^\./## if $dot_slash_added;
885 $path =~ s#^/##;
886 $path =~ s#^\.$##;
887 return $path;
888 }
889
890 sub canonicalize_url {
891 my ($url) = @_;
892 $url =~ s#^([^:]+://[^/]*/)(.*)$#$1 . canonicalize_path($2)#e;
893 return $url;
894 }
895
896 # get_svnprops(PATH)
897 # ------------------
898 # Helper for cmd_propget and cmd_proplist below.
899 sub get_svnprops {
900 my $path = shift;
901 my ($url, $rev, $uuid, $gs) = working_head_info('HEAD');
902 $gs ||= Git::SVN->new;
903
904 # prefix THE PATH by the sub-directory from which the user
905 # invoked us.
906 $path = $cmd_dir_prefix . $path;
907 fatal("No such file or directory: $path") unless -e $path;
908 my $is_dir = -d $path ? 1 : 0;
909 $path = $gs->{path} . '/' . $path;
910
911 # canonicalize the path (otherwise libsvn will abort or fail to
912 # find the file)
913 $path = canonicalize_path($path);
914
915 my $r = (defined $_revision ? $_revision : $gs->ra->get_latest_revnum);
916 my $props;
917 if ($is_dir) {
918 (undef, undef, $props) = $gs->ra->get_dir($path, $r);
919 }
920 else {
921 (undef, $props) = $gs->ra->get_file($path, $r, undef);
922 }
923 return $props;
924 }
925
926 # cmd_propget (PROP, PATH)
927 # ------------------------
928 # Print the SVN property PROP for PATH.
929 sub cmd_propget {
930 my ($prop, $path) = @_;
931 $path = '.' if not defined $path;
932 usage(1) if not defined $prop;
933 my $props = get_svnprops($path);
934 if (not defined $props->{$prop}) {
935 fatal("`$path' does not have a `$prop' SVN property.");
936 }
937 print $props->{$prop} . "\n";
938 }
939
940 # cmd_proplist (PATH)
941 # -------------------
942 # Print the list of SVN properties for PATH.
943 sub cmd_proplist {
944 my $path = shift;
945 $path = '.' if not defined $path;
946 my $props = get_svnprops($path);
947 print "Properties on '$path':\n";
948 foreach (sort keys %{$props}) {
949 print " $_\n";
950 }
951 }
952
953 sub cmd_multi_init {
954 my $url = shift;
955 unless (defined $_trunk || @_branches || @_tags) {
956 usage(1);
957 }
958
959 $_prefix = '' unless defined $_prefix;
960 if (defined $url) {
961 $url = canonicalize_url($url);
962 init_subdir(@_);
963 }
964 do_git_init_db();
965 if (defined $_trunk) {
966 my $trunk_ref = 'refs/remotes/' . $_prefix . 'trunk';
967 # try both old-style and new-style lookups:
968 my $gs_trunk = eval { Git::SVN->new($trunk_ref) };
969 unless ($gs_trunk) {
970 my ($trunk_url, $trunk_path) =
971 complete_svn_url($url, $_trunk);
972 $gs_trunk = Git::SVN->init($trunk_url, $trunk_path,
973 undef, $trunk_ref);
974 }
975 }
976 return unless @_branches || @_tags;
977 my $ra = $url ? Git::SVN::Ra->new($url) : undef;
978 foreach my $path (@_branches) {
979 complete_url_ls_init($ra, $path, '--branches/-b', $_prefix);
980 }
981 foreach my $path (@_tags) {
982 complete_url_ls_init($ra, $path, '--tags/-t', $_prefix.'tags/');
983 }
984 }
985
986 sub cmd_multi_fetch {
987 $Git::SVN::no_reuse_existing = undef;
988 my $remotes = Git::SVN::read_all_remotes();
989 foreach my $repo_id (sort keys %$remotes) {
990 if ($remotes->{$repo_id}->{url}) {
991 Git::SVN::fetch_all($repo_id, $remotes);
992 }
993 }
994 }
995
996 # this command is special because it requires no metadata
997 sub cmd_commit_diff {
998 my ($ta, $tb, $url) = @_;
999 my $usage = "Usage: $0 commit-diff -r<revision> ".
1000 "<tree-ish> <tree-ish> [<URL>]";
1001 fatal($usage) if (!defined $ta || !defined $tb);
1002 my $svn_path = '';
1003 if (!defined $url) {
1004 my $gs = eval { Git::SVN->new };
1005 if (!$gs) {
1006 fatal("Needed URL or usable git-svn --id in ",
1007 "the command-line\n", $usage);
1008 }
1009 $url = $gs->{url};
1010 $svn_path = $gs->{path};
1011 }
1012 unless (defined $_revision) {
1013 fatal("-r|--revision is a required argument\n", $usage);
1014 }
1015 if (defined $_message && defined $_file) {
1016 fatal("Both --message/-m and --file/-F specified ",
1017 "for the commit message.\n",
1018 "I have no idea what you mean");
1019 }
1020 if (defined $_file) {
1021 $_message = file_to_s($_file);
1022 } else {
1023 $_message ||= get_commit_entry($tb)->{log};
1024 }
1025 my $ra ||= Git::SVN::Ra->new($url);
1026 my $r = $_revision;
1027 if ($r eq 'HEAD') {
1028 $r = $ra->get_latest_revnum;
1029 } elsif ($r !~ /^\d+$/) {
1030 die "revision argument: $r not understood by git-svn\n";
1031 }
1032 my %ed_opts = ( r => $r,
1033 log => $_message,
1034 ra => $ra,
1035 tree_a => $ta,
1036 tree_b => $tb,
1037 editor_cb => sub { print "Committed r$_[0]\n" },
1038 svn_path => $svn_path );
1039 if (!SVN::Git::Editor->new(\%ed_opts)->apply_diff) {
1040 print "No changes\n$ta == $tb\n";
1041 }
1042 }
1043
1044 sub escape_uri_only {
1045 my ($uri) = @_;
1046 my @tmp;
1047 foreach (split m{/}, $uri) {
1048 s/([^~\w.%+-]|%(?![a-fA-F0-9]{2}))/sprintf("%%%02X",ord($1))/eg;
1049 push @tmp, $_;
1050 }
1051 join('/', @tmp);
1052 }
1053
1054 sub escape_url {
1055 my ($url) = @_;
1056 if ($url =~ m#^([^:]+)://([^/]*)(.*)$#) {
1057 my ($scheme, $domain, $uri) = ($1, $2, escape_uri_only($3));
1058 $url = "$scheme://$domain$uri";
1059 }
1060 $url;
1061 }
1062
1063 sub cmd_info {
1064 my $path = canonicalize_path(defined($_[0]) ? $_[0] : ".");
1065 my $fullpath = canonicalize_path($cmd_dir_prefix . $path);
1066 if (exists $_[1]) {
1067 die "Too many arguments specified\n";
1068 }
1069
1070 my ($file_type, $diff_status) = find_file_type_and_diff_status($path);
1071
1072 if (!$file_type && !$diff_status) {
1073 print STDERR "svn: '$path' is not under version control\n";
1074 exit 1;
1075 }
1076
1077 my ($url, $rev, $uuid, $gs) = working_head_info('HEAD');
1078 unless ($gs) {
1079 die "Unable to determine upstream SVN information from ",
1080 "working tree history\n";
1081 }
1082
1083 # canonicalize_path() will return "" to make libsvn 1.5.x happy,
1084 $path = "." if $path eq "";
1085
1086 my $full_url = $url . ($fullpath eq "" ? "" : "/$fullpath");
1087
1088 if ($_url) {
1089 print escape_url($full_url), "\n";
1090 return;
1091 }
1092
1093 my $result = "Path: $path\n";
1094 $result .= "Name: " . basename($path) . "\n" if $file_type ne "dir";
1095 $result .= "URL: " . escape_url($full_url) . "\n";
1096
1097 eval {
1098 my $repos_root = $gs->repos_root;
1099 Git::SVN::remove_username($repos_root);
1100 $result .= "Repository Root: " . escape_url($repos_root) . "\n";
1101 };
1102 if ($@) {
1103 $result .= "Repository Root: (offline)\n";
1104 }
1105 ::_req_svn();
1106 $result .= "Repository UUID: $uuid\n" unless $diff_status eq "A" &&
1107 ($SVN::Core::VERSION le '1.5.4' || $file_type ne "dir");
1108 $result .= "Revision: " . ($diff_status eq "A" ? 0 : $rev) . "\n";
1109
1110 $result .= "Node Kind: " .
1111 ($file_type eq "dir" ? "directory" : "file") . "\n";
1112
1113 my $schedule = $diff_status eq "A"
1114 ? "add"
1115 : ($diff_status eq "D" ? "delete" : "normal");
1116 $result .= "Schedule: $schedule\n";
1117
1118 if ($diff_status eq "A") {
1119 print $result, "\n";
1120 return;
1121 }
1122
1123 my ($lc_author, $lc_rev, $lc_date_utc);
1124 my @args = Git::SVN::Log::git_svn_log_cmd($rev, $rev, "--", $fullpath);
1125 my $log = command_output_pipe(@args);
1126 my $esc_color = qr/(?:\033\[(?:(?:\d+;)*\d*)?m)*/;
1127 while (<$log>) {
1128 if (/^${esc_color}author (.+) <[^>]+> (\d+) ([\-\+]?\d+)$/o) {
1129 $lc_author = $1;
1130 $lc_date_utc = Git::SVN::Log::parse_git_date($2, $3);
1131 } elsif (/^${esc_color} (git-svn-id:.+)$/o) {
1132 (undef, $lc_rev, undef) = ::extract_metadata($1);
1133 }
1134 }
1135 close $log;
1136
1137 Git::SVN::Log::set_local_timezone();
1138
1139 $result .= "Last Changed Author: $lc_author\n";
1140 $result .= "Last Changed Rev: $lc_rev\n";
1141 $result .= "Last Changed Date: " .
1142 Git::SVN::Log::format_svn_date($lc_date_utc) . "\n";
1143
1144 if ($file_type ne "dir") {
1145 my $text_last_updated_date =
1146 ($diff_status eq "D" ? $lc_date_utc : (stat $path)[9]);
1147 $result .=
1148 "Text Last Updated: " .
1149 Git::SVN::Log::format_svn_date($text_last_updated_date) .
1150 "\n";
1151 my $checksum;
1152 if ($diff_status eq "D") {
1153 my ($fh, $ctx) =
1154 command_output_pipe(qw(cat-file blob), "HEAD:$path");
1155 if ($file_type eq "link") {
1156 my $file_name = <$fh>;
1157 $checksum = md5sum("link $file_name");
1158 } else {
1159 $checksum = md5sum($fh);
1160 }
1161 command_close_pipe($fh, $ctx);
1162 } elsif ($file_type eq "link") {
1163 my $file_name =
1164 command(qw(cat-file blob), "HEAD:$path");
1165 $checksum =
1166 md5sum("link " . $file_name);
1167 } else {
1168 open FILE, "<", $path or die $!;
1169 $checksum = md5sum(\*FILE);
1170 close FILE or die $!;
1171 }
1172 $result .= "Checksum: " . $checksum . "\n";
1173 }
1174
1175 print $result, "\n";
1176 }
1177
1178 sub cmd_reset {
1179 my $target = shift || $_revision or die "SVN revision required\n";
1180 $target = $1 if $target =~ /^r(\d+)$/;
1181 $target =~ /^\d+$/ or die "Numeric SVN revision expected\n";
1182 my ($url, $rev, $uuid, $gs) = working_head_info('HEAD');
1183 unless ($gs) {
1184 die "Unable to determine upstream SVN information from ".
1185 "history\n";
1186 }
1187 my ($r, $c) = $gs->find_rev_before($target, not $_fetch_parent);
1188 die "Cannot find SVN revision $target\n" unless defined($c);
1189 $gs->rev_map_set($r, $c, 'reset', $uuid);
1190 print "r$r = $c ($gs->{ref_id})\n";
1191 }
1192
1193 sub cmd_gc {
1194 if (!$can_compress) {
1195 warn "Compress::Zlib could not be found; unhandled.log " .
1196 "files will not be compressed.\n";
1197 }
1198 find({ wanted => \&gc_directory, no_chdir => 1}, "$ENV{GIT_DIR}/svn");
1199 }
1200
1201 ########################### utility functions #########################
1202
1203 sub rebase_cmd {
1204 my @cmd = qw/rebase/;
1205 push @cmd, '-v' if $_verbose;
1206 push @cmd, qw/--merge/ if $_merge;
1207 push @cmd, "--strategy=$_strategy" if $_strategy;
1208 @cmd;
1209 }
1210
1211 sub post_fetch_checkout {
1212 return if $_no_checkout;
1213 my $gs = $Git::SVN::_head or return;
1214 return if verify_ref('refs/heads/master^0');
1215
1216 # look for "trunk" ref if it exists
1217 my $remote = Git::SVN::read_all_remotes()->{$gs->{repo_id}};
1218 my $fetch = $remote->{fetch};
1219 if ($fetch) {
1220 foreach my $p (keys %$fetch) {
1221 basename($fetch->{$p}) eq 'trunk' or next;
1222 $gs = Git::SVN->new($fetch->{$p}, $gs->{repo_id}, $p);
1223 last;
1224 }
1225 }
1226
1227 my $valid_head = verify_ref('HEAD^0');
1228 command_noisy(qw(update-ref refs/heads/master), $gs->refname);
1229 return if ($valid_head || !verify_ref('HEAD^0'));
1230
1231 return if $ENV{GIT_DIR} !~ m#^(?:.*/)?\.git$#;
1232 my $index = $ENV{GIT_INDEX_FILE} || "$ENV{GIT_DIR}/index";
1233 return if -f $index;
1234
1235 return if command_oneline(qw/rev-parse --is-inside-work-tree/) eq 'false';
1236 return if command_oneline(qw/rev-parse --is-inside-git-dir/) eq 'true';
1237 command_noisy(qw/read-tree -m -u -v HEAD HEAD/);
1238 print STDERR "Checked out HEAD:\n ",
1239 $gs->full_url, " r", $gs->last_rev, "\n";
1240 $gs->mkemptydirs($gs->last_rev);
1241 }
1242
1243 sub complete_svn_url {
1244 my ($url, $path) = @_;
1245 $path =~ s#/+$##;
1246 if ($path !~ m#^[a-z\+]+://#) {
1247 if (!defined $url || $url !~ m#^[a-z\+]+://#) {
1248 fatal("E: '$path' is not a complete URL ",
1249 "and a separate URL is not specified");
1250 }
1251 return ($url, $path);
1252 }
1253 return ($path, '');
1254 }
1255
1256 sub complete_url_ls_init {
1257 my ($ra, $repo_path, $switch, $pfx) = @_;
1258 unless ($repo_path) {
1259 print STDERR "W: $switch not specified\n";
1260 return;
1261 }
1262 $repo_path =~ s#/+$##;
1263 if ($repo_path =~ m#^[a-z\+]+://#) {
1264 $ra = Git::SVN::Ra->new($repo_path);
1265 $repo_path = '';
1266 } else {
1267 $repo_path =~ s#^/+##;
1268 unless ($ra) {
1269 fatal("E: '$repo_path' is not a complete URL ",
1270 "and a separate URL is not specified");
1271 }
1272 }
1273 my $url = $ra->{url};
1274 my $gs = Git::SVN->init($url, undef, undef, undef, 1);
1275 my $k = "svn-remote.$gs->{repo_id}.url";
1276 my $orig_url = eval { command_oneline(qw/config --get/, $k) };
1277 if ($orig_url && ($orig_url ne $gs->{url})) {
1278 die "$k already set: $orig_url\n",
1279 "wanted to set to: $gs->{url}\n";
1280 }
1281 command_oneline('config', $k, $gs->{url}) unless $orig_url;
1282 my $remote_path = "$gs->{path}/$repo_path";
1283 $remote_path =~ s{%([0-9A-F]{2})}{chr hex($1)}ieg;
1284 $remote_path =~ s#/+#/#g;
1285 $remote_path =~ s#^/##g;
1286 $remote_path .= "/*" if $remote_path !~ /\*/;
1287 my ($n) = ($switch =~ /^--(\w+)/);
1288 if (length $pfx && $pfx !~ m#/$#) {
1289 die "--prefix='$pfx' must have a trailing slash '/'\n";
1290 }
1291 command_noisy('config',
1292 '--add',
1293 "svn-remote.$gs->{repo_id}.$n",
1294 "$remote_path:refs/remotes/$pfx*" .
1295 ('/*' x (($remote_path =~ tr/*/*/) - 1)) );
1296 }
1297
1298 sub verify_ref {
1299 my ($ref) = @_;
1300 eval { command_oneline([ 'rev-parse', '--verify', $ref ],
1301 { STDERR => 0 }); };
1302 }
1303
1304 sub get_tree_from_treeish {
1305 my ($treeish) = @_;
1306 # $treeish can be a symbolic ref, too:
1307 my $type = command_oneline(qw/cat-file -t/, $treeish);
1308 my $expected;
1309 while ($type eq 'tag') {
1310 ($treeish, $type) = command(qw/cat-file tag/, $treeish);
1311 }
1312 if ($type eq 'commit') {
1313 $expected = (grep /^tree /, command(qw/cat-file commit/,
1314 $treeish))[0];
1315 ($expected) = ($expected =~ /^tree ($sha1)$/o);
1316 die "Unable to get tree from $treeish\n" unless $expected;
1317 } elsif ($type eq 'tree') {
1318 $expected = $treeish;
1319 } else {
1320 die "$treeish is a $type, expected tree, tag or commit\n";
1321 }
1322 return $expected;
1323 }
1324
1325 sub get_commit_entry {
1326 my ($treeish) = shift;
1327 my %log_entry = ( log => '', tree => get_tree_from_treeish($treeish) );
1328 my $commit_editmsg = "$ENV{GIT_DIR}/COMMIT_EDITMSG";
1329 my $commit_msg = "$ENV{GIT_DIR}/COMMIT_MSG";
1330 open my $log_fh, '>', $commit_editmsg or croak $!;
1331
1332 my $type = command_oneline(qw/cat-file -t/, $treeish);
1333 if ($type eq 'commit' || $type eq 'tag') {
1334 my ($msg_fh, $ctx) = command_output_pipe('cat-file',
1335 $type, $treeish);
1336 my $in_msg = 0;
1337 my $author;
1338 my $saw_from = 0;
1339 my $msgbuf = "";
1340 while (<$msg_fh>) {
1341 if (!$in_msg) {
1342 $in_msg = 1 if (/^\s*$/);
1343 $author = $1 if (/^author (.*>)/);
1344 } elsif (/^git-svn-id: /) {
1345 # skip this for now, we regenerate the
1346 # correct one on re-fetch anyways
1347 # TODO: set *:merge properties or like...
1348 } else {
1349 if (/^From:/ || /^Signed-off-by:/) {
1350 $saw_from = 1;
1351 }
1352 $msgbuf .= $_;
1353 }
1354 }
1355 $msgbuf =~ s/\s+$//s;
1356 if ($Git::SVN::_add_author_from && defined($author)
1357 && !$saw_from) {
1358 $msgbuf .= "\n\nFrom: $author";
1359 }
1360 print $log_fh $msgbuf or croak $!;
1361 command_close_pipe($msg_fh, $ctx);
1362 }
1363 close $log_fh or croak $!;
1364
1365 if ($_edit || ($type eq 'tree')) {
1366 chomp(my $editor = command_oneline(qw(var GIT_EDITOR)));
1367 system('sh', '-c', $editor.' "$@"', $editor, $commit_editmsg);
1368 }
1369 rename $commit_editmsg, $commit_msg or croak $!;
1370 {
1371 require Encode;
1372 # SVN requires messages to be UTF-8 when entering the repo
1373 local $/;
1374 open $log_fh, '<', $commit_msg or croak $!;
1375 binmode $log_fh;
1376 chomp($log_entry{log} = <$log_fh>);
1377
1378 my $enc = Git::config('i18n.commitencoding') || 'UTF-8';
1379 my $msg = $log_entry{log};
1380
1381 eval { $msg = Encode::decode($enc, $msg, 1) };
1382 if ($@) {
1383 die "Could not decode as $enc:\n", $msg,
1384 "\nPerhaps you need to set i18n.commitencoding\n";
1385 }
1386
1387 eval { $msg = Encode::encode('UTF-8', $msg, 1) };
1388 die "Could not encode as UTF-8:\n$msg\n" if $@;
1389
1390 $log_entry{log} = $msg;
1391
1392 close $log_fh or croak $!;
1393 }
1394 unlink $commit_msg;
1395 \%log_entry;
1396 }
1397
1398 sub s_to_file {
1399 my ($str, $file, $mode) = @_;
1400 open my $fd,'>',$file or croak $!;
1401 print $fd $str,"\n" or croak $!;
1402 close $fd or croak $!;
1403 chmod ($mode &~ umask, $file) if (defined $mode);
1404 }
1405
1406 sub file_to_s {
1407 my $file = shift;
1408 open my $fd,'<',$file or croak "$!: file: $file\n";
1409 local $/;
1410 my $ret = <$fd>;
1411 close $fd or croak $!;
1412 $ret =~ s/\s*$//s;
1413 return $ret;
1414 }
1415
1416 # '<svn username> = real-name <email address>' mapping based on git-svnimport:
1417 sub load_authors {
1418 open my $authors, '<', $_authors or die "Can't open $_authors $!\n";
1419 my $log = $cmd eq 'log';
1420 while (<$authors>) {
1421 chomp;
1422 next unless /^(.+?|\(no author\))\s*=\s*(.+?)\s*<(.+)>\s*$/;
1423 my ($user, $name, $email) = ($1, $2, $3);
1424 if ($log) {
1425 $Git::SVN::Log::rusers{"$name <$email>"} = $user;
1426 } else {
1427 $users{$user} = [$name, $email];
1428 }
1429 }
1430 close $authors or croak $!;
1431 }
1432
1433 # convert GetOpt::Long specs for use by git-config
1434 sub read_git_config {
1435 my $opts = shift;
1436 my @config_only;
1437 foreach my $o (keys %$opts) {
1438 # if we have mixedCase and a long option-only, then
1439 # it's a config-only variable that we don't need for
1440 # the command-line.
1441 push @config_only, $o if ($o =~ /[A-Z]/ && $o =~ /^[a-z]+$/i);
1442 my $v = $opts->{$o};
1443 my ($key) = ($o =~ /^([a-zA-Z\-]+)/);
1444 $key =~ s/-//g;
1445 my $arg = 'git config';
1446 $arg .= ' --int' if ($o =~ /[:=]i$/);
1447 $arg .= ' --bool' if ($o !~ /[:=][sfi]$/);
1448 if (ref $v eq 'ARRAY') {
1449 chomp(my @tmp = `$arg --get-all svn.$key`);
1450 @$v = @tmp if @tmp;
1451 } else {
1452 chomp(my $tmp = `$arg --get svn.$key`);
1453 if ($tmp && !($arg =~ / --bool/ && $tmp eq 'false')) {
1454 $$v = $tmp;
1455 }
1456 }
1457 }
1458 delete @$opts{@config_only} if @config_only;
1459 }
1460
1461 sub extract_metadata {
1462 my $id = shift or return (undef, undef, undef);
1463 my ($url, $rev, $uuid) = ($id =~ /^\s*git-svn-id:\s+(.*)\@(\d+)
1464 \s([a-f\d\-]+)$/ix);
1465 if (!defined $rev || !$uuid || !$url) {
1466 # some of the original repositories I made had
1467 # identifiers like this:
1468 ($rev, $uuid) = ($id =~/^\s*git-svn-id:\s(\d+)\@([a-f\d\-]+)/i);
1469 }
1470 return ($url, $rev, $uuid);
1471 }
1472
1473 sub cmt_metadata {
1474 return extract_metadata((grep(/^git-svn-id: /,
1475 command(qw/cat-file commit/, shift)))[-1]);
1476 }
1477
1478 sub cmt_sha2rev_batch {
1479 my %s2r;
1480 my ($pid, $in, $out, $ctx) = command_bidi_pipe(qw/cat-file --batch/);
1481 my $list = shift;
1482
1483 foreach my $sha (@{$list}) {
1484 my $first = 1;
1485 my $size = 0;
1486 print $out $sha, "\n";
1487
1488 while (my $line = <$in>) {
1489 if ($first && $line =~ /^[[:xdigit:]]{40}\smissing$/) {
1490 last;
1491 } elsif ($first &&
1492 $line =~ /^[[:xdigit:]]{40}\scommit\s(\d+)$/) {
1493 $first = 0;
1494 $size = $1;
1495 next;
1496 } elsif ($line =~ /^(git-svn-id: )/) {
1497 my (undef, $rev, undef) =
1498 extract_metadata($line);
1499 $s2r{$sha} = $rev;
1500 }
1501
1502 $size -= length($line);
1503 last if ($size == 0);
1504 }
1505 }
1506
1507 command_close_bidi_pipe($pid, $in, $out, $ctx);
1508
1509 return \%s2r;
1510 }
1511
1512 sub working_head_info {
1513 my ($head, $refs) = @_;
1514 my @args = ('log', '--no-color', '--first-parent', '--pretty=medium');
1515 my ($fh, $ctx) = command_output_pipe(@args, $head);
1516 my $hash;
1517 my %max;
1518 while (<$fh>) {
1519 if ( m{^commit ($::sha1)$} ) {
1520 unshift @$refs, $hash if $hash and $refs;
1521 $hash = $1;
1522 next;
1523 }
1524 next unless s{^\s*(git-svn-id:)}{$1};
1525 my ($url, $rev, $uuid) = extract_metadata($_);
1526 if (defined $url && defined $rev) {
1527 next if $max{$url} and $max{$url} < $rev;
1528 if (my $gs = Git::SVN->find_by_url($url)) {
1529 my $c = $gs->rev_map_get($rev, $uuid);
1530 if ($c && $c eq $hash) {
1531 close $fh; # break the pipe
1532 return ($url, $rev, $uuid, $gs);
1533 } else {
1534 $max{$url} ||= $gs->rev_map_max;
1535 }
1536 }
1537 }
1538 }
1539 command_close_pipe($fh, $ctx);
1540 (undef, undef, undef, undef);
1541 }
1542
1543 sub read_commit_parents {
1544 my ($parents, $c) = @_;
1545 chomp(my $p = command_oneline(qw/rev-list --parents -1/, $c));
1546 $p =~ s/^($c)\s*// or die "rev-list --parents -1 $c failed!\n";
1547 @{$parents->{$c}} = split(/ /, $p);
1548 }
1549
1550 sub linearize_history {
1551 my ($gs, $refs) = @_;
1552 my %parents;
1553 foreach my $c (@$refs) {
1554 read_commit_parents(\%parents, $c);
1555 }
1556
1557 my @linear_refs;
1558 my %skip = ();
1559 my $last_svn_commit = $gs->last_commit;
1560 foreach my $c (reverse @$refs) {
1561 next if $c eq $last_svn_commit;
1562 last if $skip{$c};
1563
1564 unshift @linear_refs, $c;
1565 $skip{$c} = 1;
1566
1567 # we only want the first parent to diff against for linear
1568 # history, we save the rest to inject when we finalize the
1569 # svn commit
1570 my $fp_a = verify_ref("$c~1");
1571 my $fp_b = shift @{$parents{$c}} if $parents{$c};
1572 if (!$fp_a || !$fp_b) {
1573 die "Commit $c\n",
1574 "has no parent commit, and therefore ",
1575 "nothing to diff against.\n",
1576 "You should be working from a repository ",
1577 "originally created by git-svn\n";
1578 }
1579 if ($fp_a ne $fp_b) {
1580 die "$c~1 = $fp_a, however parsing commit $c ",
1581 "revealed that:\n$c~1 = $fp_b\nBUG!\n";
1582 }
1583
1584 foreach my $p (@{$parents{$c}}) {
1585 $skip{$p} = 1;
1586 }
1587 }
1588 (\@linear_refs, \%parents);
1589 }
1590
1591 sub find_file_type_and_diff_status {
1592 my ($path) = @_;
1593 return ('dir', '') if $path eq '';
1594
1595 my $diff_output =
1596 command_oneline(qw(diff --cached --name-status --), $path) || "";
1597 my $diff_status = (split(' ', $diff_output))[0] || "";
1598
1599 my $ls_tree = command_oneline(qw(ls-tree HEAD), $path) || "";
1600
1601 return (undef, undef) if !$diff_status && !$ls_tree;
1602
1603 if ($diff_status eq "A") {
1604 return ("link", $diff_status) if -l $path;
1605 return ("dir", $diff_status) if -d $path;
1606 return ("file", $diff_status);
1607 }
1608
1609 my $mode = (split(' ', $ls_tree))[0] || "";
1610
1611 return ("link", $diff_status) if $mode eq "120000";
1612 return ("dir", $diff_status) if $mode eq "040000";
1613 return ("file", $diff_status);
1614 }
1615
1616 sub md5sum {
1617 my $arg = shift;
1618 my $ref = ref $arg;
1619 my $md5 = Digest::MD5->new();
1620 if ($ref eq 'GLOB' || $ref eq 'IO::File' || $ref eq 'File::Temp') {
1621 $md5->addfile($arg) or croak $!;
1622 } elsif ($ref eq 'SCALAR') {
1623 $md5->add($$arg) or croak $!;
1624 } elsif (!$ref) {
1625 $md5->add($arg) or croak $!;
1626 } else {
1627 ::fatal "Can't provide MD5 hash for unknown ref type: '", $ref, "'";
1628 }
1629 return $md5->hexdigest();
1630 }
1631
1632 sub gc_directory {
1633 if ($can_compress && -f $_ && basename($_) eq "unhandled.log") {
1634 my $out_filename = $_ . ".gz";
1635 open my $in_fh, "<", $_ or die "Unable to open $_: $!\n";
1636 binmode $in_fh;
1637 my $gz = Compress::Zlib::gzopen($out_filename, "ab") or
1638 die "Unable to open $out_filename: $!\n";
1639
1640 my $res;
1641 while ($res = sysread($in_fh, my $str, 1024)) {
1642 $gz->gzwrite($str) or
1643 die "Unable to write: ".$gz->gzerror()."!\n";
1644 }
1645 unlink $_ or die "unlink $File::Find::name: $!\n";
1646 } elsif (-f $_ && basename($_) eq "index") {
1647 unlink $_ or die "unlink $_: $!\n";
1648 }
1649 }
1650
1651 package Git::SVN;
1652 use strict;
1653 use warnings;
1654 use Fcntl qw/:DEFAULT :seek/;
1655 use constant rev_map_fmt => 'NH40';
1656 use vars qw/$default_repo_id $default_ref_id $_no_metadata $_follow_parent
1657 $_repack $_repack_flags $_use_svm_props $_head
1658 $_use_svnsync_props $no_reuse_existing $_minimize_url
1659 $_use_log_author $_add_author_from $_localtime/;
1660 use Carp qw/croak/;
1661 use File::Path qw/mkpath/;
1662 use File::Copy qw/copy/;
1663 use IPC::Open3;
1664 use Memoize; # core since 5.8.0, Jul 2002
1665 use Memoize::Storable;
1666
1667 my ($_gc_nr, $_gc_period);
1668
1669 # properties that we do not log:
1670 my %SKIP_PROP;
1671 BEGIN {
1672 %SKIP_PROP = map { $_ => 1 } qw/svn:wc:ra_dav:version-url
1673 svn:special svn:executable
1674 svn:entry:committed-rev
1675 svn:entry:last-author
1676 svn:entry:uuid
1677 svn:entry:committed-date/;
1678
1679 # some options are read globally, but can be overridden locally
1680 # per [svn-remote "..."] section. Command-line options will *NOT*
1681 # override options set in an [svn-remote "..."] section
1682 no strict 'refs';
1683 for my $option (qw/follow_parent no_metadata use_svm_props
1684 use_svnsync_props/) {
1685 my $key = $option;
1686 $key =~ tr/_//d;
1687 my $prop = "-$option";
1688 *$option = sub {
1689 my ($self) = @_;
1690 return $self->{$prop} if exists $self->{$prop};
1691 my $k = "svn-remote.$self->{repo_id}.$key";
1692 eval { command_oneline(qw/config --get/, $k) };
1693 if ($@) {
1694 $self->{$prop} = ${"Git::SVN::_$option"};
1695 } else {
1696 my $v = command_oneline(qw/config --bool/,$k);
1697 $self->{$prop} = $v eq 'false' ? 0 : 1;
1698 }
1699 return $self->{$prop};
1700 }
1701 }
1702 }
1703
1704
1705 my (%LOCKFILES, %INDEX_FILES);
1706 END {
1707 unlink keys %LOCKFILES if %LOCKFILES;
1708 unlink keys %INDEX_FILES if %INDEX_FILES;
1709 }
1710
1711 sub resolve_local_globs {
1712 my ($url, $fetch, $glob_spec) = @_;
1713 return unless defined $glob_spec;
1714 my $ref = $glob_spec->{ref};
1715 my $path = $glob_spec->{path};
1716 foreach (command(qw#for-each-ref --format=%(refname) refs/#)) {
1717 next unless m#^$ref->{regex}$#;
1718 my $p = $1;
1719 my $pathname = desanitize_refname($path->full_path($p));
1720 my $refname = desanitize_refname($ref->full_path($p));
1721 if (my $existing = $fetch->{$pathname}) {
1722 if ($existing ne $refname) {
1723 die "Refspec conflict:\n",
1724 "existing: $existing\n",
1725 " globbed: $refname\n";
1726 }
1727 my $u = (::cmt_metadata("$refname"))[0];
1728 $u =~ s!^\Q$url\E(/|$)!! or die
1729 "$refname: '$url' not found in '$u'\n";
1730 if ($pathname ne $u) {
1731 warn "W: Refspec glob conflict ",
1732 "(ref: $refname):\n",
1733 "expected path: $pathname\n",
1734 " real path: $u\n",
1735 "Continuing ahead with $u\n";
1736 next;
1737 }
1738 } else {
1739 $fetch->{$pathname} = $refname;
1740 }
1741 }
1742 }
1743
1744 sub parse_revision_argument {
1745 my ($base, $head) = @_;
1746 if (!defined $::_revision || $::_revision eq 'BASE:HEAD') {
1747 return ($base, $head);
1748 }
1749 return ($1, $2) if ($::_revision =~ /^(\d+):(\d+)$/);
1750 return ($::_revision, $::_revision) if ($::_revision =~ /^\d+$/);
1751 return ($head, $head) if ($::_revision eq 'HEAD');
1752 return ($base, $1) if ($::_revision =~ /^BASE:(\d+)$/);
1753 return ($1, $head) if ($::_revision =~ /^(\d+):HEAD$/);
1754 die "revision argument: $::_revision not understood by git-svn\n";
1755 }
1756
1757 sub fetch_all {
1758 my ($repo_id, $remotes) = @_;
1759 if (ref $repo_id) {
1760 my $gs = $repo_id;
1761 $repo_id = undef;
1762 $repo_id = $gs->{repo_id};
1763 }
1764 $remotes ||= read_all_remotes();
1765 my $remote = $remotes->{$repo_id} or
1766 die "[svn-remote \"$repo_id\"] unknown\n";
1767 my $fetch = $remote->{fetch};
1768 my $url = $remote->{url} or die "svn-remote.$repo_id.url not defined\n";
1769 my (@gs, @globs);
1770 my $ra = Git::SVN::Ra->new($url);
1771 my $uuid = $ra->get_uuid;
1772 my $head = $ra->get_latest_revnum;
1773
1774 # ignore errors, $head revision may not even exist anymore
1775 eval { $ra->get_log("", $head, 0, 1, 0, 1, sub { $head = $_[1] }) };
1776 warn "W: $@\n" if $@;
1777
1778 my $base = defined $fetch ? $head : 0;
1779
1780 # read the max revs for wildcard expansion (branches/*, tags/*)
1781 foreach my $t (qw/branches tags/) {
1782 defined $remote->{$t} or next;
1783 push @globs, @{$remote->{$t}};
1784
1785 my $max_rev = eval { tmp_config(qw/--int --get/,
1786 "svn-remote.$repo_id.${t}-maxRev") };
1787 if (defined $max_rev && ($max_rev < $base)) {
1788 $base = $max_rev;
1789 } elsif (!defined $max_rev) {
1790 $base = 0;
1791 }
1792 }
1793
1794 if ($fetch) {
1795 foreach my $p (sort keys %$fetch) {
1796 my $gs = Git::SVN->new($fetch->{$p}, $repo_id, $p);
1797 my $lr = $gs->rev_map_max;
1798 if (defined $lr) {
1799 $base = $lr if ($lr < $base);
1800 }
1801 push @gs, $gs;
1802 }
1803 }
1804
1805 ($base, $head) = parse_revision_argument($base, $head);
1806 $ra->gs_fetch_loop_common($base, $head, \@gs, \@globs);
1807 }
1808
1809 sub read_all_remotes {
1810 my $r = {};
1811 my $use_svm_props = eval { command_oneline(qw/config --bool
1812 svn.useSvmProps/) };
1813 $use_svm_props = $use_svm_props eq 'true' if $use_svm_props;
1814 my $svn_refspec = qr{\s*(.*?)\s*:\s*(.+?)\s*};
1815 foreach (grep { s/^svn-remote\.// } command(qw/config -l/)) {
1816 if (m!^(.+)\.fetch=$svn_refspec$!) {
1817 my ($remote, $local_ref, $remote_ref) = ($1, $2, $3);
1818 die("svn-remote.$remote: remote ref '$remote_ref' "
1819 . "must start with 'refs/'\n")
1820 unless $remote_ref =~ m{^refs/};
1821 $r->{$remote}->{fetch}->{$local_ref} = $remote_ref;
1822 $r->{$remote}->{svm} = {} if $use_svm_props;
1823 } elsif (m!^(.+)\.usesvmprops=\s*(.*)\s*$!) {
1824 $r->{$1}->{svm} = {};
1825 } elsif (m!^(.+)\.url=\s*(.*)\s*$!) {
1826 $r->{$1}->{url} = $2;
1827 } elsif (m!^(.+)\.(branches|tags)=$svn_refspec$!) {
1828 my ($remote, $t, $local_ref, $remote_ref) =
1829 ($1, $2, $3, $4);
1830 die("svn-remote.$remote: remote ref '$remote_ref' ($t) "
1831 . "must start with 'refs/'\n")
1832 unless $remote_ref =~ m{^refs/};
1833 my $rs = {
1834 t => $t,
1835 remote => $remote,
1836 path => Git::SVN::GlobSpec->new($local_ref, 1),
1837 ref => Git::SVN::GlobSpec->new($remote_ref, 0) };
1838 if (length($rs->{ref}->{right}) != 0) {
1839 die "The '*' glob character must be the last ",
1840 "character of '$remote_ref'\n";
1841 }
1842 push @{ $r->{$remote}->{$t} }, $rs;
1843 }
1844 }
1845
1846 map {
1847 if (defined $r->{$_}->{svm}) {
1848 my $svm;
1849 eval {
1850 my $section = "svn-remote.$_";
1851 $svm = {
1852 source => tmp_config('--get',
1853 "$section.svm-source"),
1854 replace => tmp_config('--get',
1855 "$section.svm-replace"),
1856 }
1857 };
1858 $r->{$_}->{svm} = $svm;
1859 }
1860 } keys %$r;
1861
1862 $r;
1863 }
1864
1865 sub init_vars {
1866 $_gc_nr = $_gc_period = 1000;
1867 if (defined $_repack || defined $_repack_flags) {
1868 warn "Repack options are obsolete; they have no effect.\n";
1869 }
1870 }
1871
1872 sub verify_remotes_sanity {
1873 return unless -d $ENV{GIT_DIR};
1874 my %seen;
1875 foreach (command(qw/config -l/)) {
1876 if (m!^svn-remote\.(?:.+)\.fetch=.*:refs/remotes/(\S+)\s*$!) {
1877 if ($seen{$1}) {
1878 die "Remote ref refs/remote/$1 is tracked by",
1879 "\n \"$_\"\nand\n \"$seen{$1}\"\n",
1880 "Please resolve this ambiguity in ",
1881 "your git configuration file before ",
1882 "continuing\n";
1883 }
1884 $seen{$1} = $_;
1885 }
1886 }
1887 }
1888
1889 sub find_existing_remote {
1890 my ($url, $remotes) = @_;
1891 return undef if $no_reuse_existing;
1892 my $existing;
1893 foreach my $repo_id (keys %$remotes) {
1894 my $u = $remotes->{$repo_id}->{url} or next;
1895 next if $u ne $url;
1896 $existing = $repo_id;
1897 last;
1898 }
1899 $existing;
1900 }
1901
1902 sub init_remote_config {
1903 my ($self, $url, $no_write) = @_;
1904 $url =~ s!/+$!!; # strip trailing slash
1905 my $r = read_all_remotes();
1906 my $existing = find_existing_remote($url, $r);
1907 if ($existing) {
1908 unless ($no_write) {
1909 print STDERR "Using existing ",
1910 "[svn-remote \"$existing\"]\n";
1911 }
1912 $self->{repo_id} = $existing;
1913 } elsif ($_minimize_url) {
1914 my $min_url = Git::SVN::Ra->new($url)->minimize_url;
1915 $existing = find_existing_remote($min_url, $r);
1916 if ($existing) {
1917 unless ($no_write) {
1918 print STDERR "Using existing ",
1919 "[svn-remote \"$existing\"]\n";
1920 }
1921 $self->{repo_id} = $existing;
1922 }
1923 if ($min_url ne $url) {
1924 unless ($no_write) {
1925 print STDERR "Using higher level of URL: ",
1926 "$url => $min_url\n";
1927 }
1928 my $old_path = $self->{path};
1929 $self->{path} = $url;
1930 $self->{path} =~ s!^\Q$min_url\E(/|$)!!;
1931 if (length $old_path) {
1932 $self->{path} .= "/$old_path";
1933 }
1934 $url = $min_url;
1935 }
1936 }
1937 my $orig_url;
1938 if (!$existing) {
1939 # verify that we aren't overwriting anything:
1940 $orig_url = eval {
1941 command_oneline('config', '--get',
1942 "svn-remote.$self->{repo_id}.url")
1943 };
1944 if ($orig_url && ($orig_url ne $url)) {
1945 die "svn-remote.$self->{repo_id}.url already set: ",
1946 "$orig_url\nwanted to set to: $url\n";
1947 }
1948 }
1949 my ($xrepo_id, $xpath) = find_ref($self->refname);
1950 if (!$no_write && defined $xpath) {
1951 die "svn-remote.$xrepo_id.fetch already set to track ",
1952 "$xpath:", $self->refname, "\n";
1953 }
1954 unless ($no_write) {
1955 command_noisy('config',
1956 "svn-remote.$self->{repo_id}.url", $url);
1957 $self->{path} =~ s{^/}{};
1958 $self->{path} =~ s{%([0-9A-F]{2})}{chr hex($1)}ieg;
1959 command_noisy('config', '--add',
1960 "svn-remote.$self->{repo_id}.fetch",
1961 "$self->{path}:".$self->refname);
1962 }
1963 $self->{url} = $url;
1964 }
1965
1966 sub find_by_url { # repos_root and, path are optional
1967 my ($class, $full_url, $repos_root, $path) = @_;
1968
1969 return undef unless defined $full_url;
1970 remove_username($full_url);
1971 remove_username($repos_root) if defined $repos_root;
1972 my $remotes = read_all_remotes();
1973 if (defined $full_url && defined $repos_root && !defined $path) {
1974 $path = $full_url;
1975 $path =~ s#^\Q$repos_root\E(?:/|$)##;
1976 }
1977 foreach my $repo_id (keys %$remotes) {
1978 my $u = $remotes->{$repo_id}->{url} or next;
1979 remove_username($u);
1980 next if defined $repos_root && $repos_root ne $u;
1981
1982 my $fetch = $remotes->{$repo_id}->{fetch} || {};
1983 foreach my $t (qw/branches tags/) {
1984 foreach my $globspec (@{$remotes->{$repo_id}->{$t}}) {
1985 resolve_local_globs($u, $fetch, $globspec);
1986 }
1987 }
1988 my $p = $path;
1989 my $rwr = rewrite_root({repo_id => $repo_id});
1990 my $svm = $remotes->{$repo_id}->{svm}
1991 if defined $remotes->{$repo_id}->{svm};
1992 unless (defined $p) {
1993 $p = $full_url;
1994 my $z = $u;
1995 my $prefix = '';
1996 if ($rwr) {
1997 $z = $rwr;
1998 remove_username($z);
1999 } elsif (defined $svm) {
2000 $z = $svm->{source};
2001 $prefix = $svm->{replace};
2002 $prefix =~ s#^\Q$u\E(?:/|$)##;
2003 $prefix =~ s#/$##;
2004 }
2005 $p =~ s#^\Q$z\E(?:/|$)#$prefix# or next;
2006 }
2007 foreach my $f (keys %$fetch) {
2008 next if $f ne $p;
2009 return Git::SVN->new($fetch->{$f}, $repo_id, $f);
2010 }
2011 }
2012 undef;
2013 }
2014
2015 sub init {
2016 my ($class, $url, $path, $repo_id, $ref_id, $no_write) = @_;
2017 my $self = _new($class, $repo_id, $ref_id, $path);
2018 if (defined $url) {
2019 $self->init_remote_config($url, $no_write);
2020 }
2021 $self;
2022 }
2023
2024 sub find_ref {
2025 my ($ref_id) = @_;
2026 foreach (command(qw/config -l/)) {
2027 next unless m!^svn-remote\.(.+)\.fetch=
2028 \s*(.*?)\s*:\s*(.+?)\s*$!x;
2029 my ($repo_id, $path, $ref) = ($1, $2, $3);
2030 if ($ref eq $ref_id) {
2031 $path = '' if ($path =~ m#^\./?#);
2032 return ($repo_id, $path);
2033 }
2034 }
2035 (undef, undef, undef);
2036 }
2037
2038 sub new {
2039 my ($class, $ref_id, $repo_id, $path) = @_;
2040 if (defined $ref_id && !defined $repo_id && !defined $path) {
2041 ($repo_id, $path) = find_ref($ref_id);
2042 if (!defined $repo_id) {
2043 die "Could not find a \"svn-remote.*.fetch\" key ",
2044 "in the repository configuration matching: ",
2045 "$ref_id\n";
2046 }
2047 }
2048 my $self = _new($class, $repo_id, $ref_id, $path);
2049 if (!defined $self->{path} || !length $self->{path}) {
2050 my $fetch = command_oneline('config', '--get',
2051 "svn-remote.$repo_id.fetch",
2052 ":$ref_id\$") or
2053 die "Failed to read \"svn-remote.$repo_id.fetch\" ",
2054 "\":$ref_id\$\" in config\n";
2055 ($self->{path}, undef) = split(/\s*:\s*/, $fetch);
2056 }
2057 $self->{url} = command_oneline('config', '--get',
2058 "svn-remote.$repo_id.url") or
2059 die "Failed to read \"svn-remote.$repo_id.url\" in config\n";
2060 $self->rebuild;
2061 $self;
2062 }
2063
2064 sub refname {
2065 my ($refname) = $_[0]->{ref_id} ;
2066
2067 # It cannot end with a slash /, we'll throw up on this because
2068 # SVN can't have directories with a slash in their name, either:
2069 if ($refname =~ m{/$}) {
2070 die "ref: '$refname' ends with a trailing slash, this is ",
2071 "not permitted by git nor Subversion\n";
2072 }
2073
2074 # It cannot have ASCII control character space, tilde ~, caret ^,
2075 # colon :, question-mark ?, asterisk *, space, or open bracket [
2076 # anywhere.
2077 #
2078 # Additionally, % must be escaped because it is used for escaping
2079 # and we want our escaped refname to be reversible
2080 $refname =~ s{([ \%~\^:\?\*\[\t])}{uc sprintf('%%%02x',ord($1))}eg;
2081
2082 # no slash-separated component can begin with a dot .
2083 # /.* becomes /%2E*
2084 $refname =~ s{/\.}{/%2E}g;
2085
2086 # It cannot have two consecutive dots .. anywhere
2087 # .. becomes %2E%2E
2088 $refname =~ s{\.\.}{%2E%2E}g;
2089
2090 return $refname;
2091 }
2092
2093 sub desanitize_refname {
2094 my ($refname) = @_;
2095 $refname =~ s{%(?:([0-9A-F]{2}))}{chr hex($1)}eg;
2096 return $refname;
2097 }
2098
2099 sub svm_uuid {
2100 my ($self) = @_;
2101 return $self->{svm}->{uuid} if $self->svm;
2102 $self->ra;
2103 unless ($self->{svm}) {
2104 die "SVM UUID not cached, and reading remotely failed\n";
2105 }
2106 $self->{svm}->{uuid};
2107 }
2108
2109 sub svm {
2110 my ($self) = @_;
2111 return $self->{svm} if $self->{svm};
2112 my $svm;
2113 # see if we have it in our config, first:
2114 eval {
2115 my $section = "svn-remote.$self->{repo_id}";
2116 $svm = {
2117 source => tmp_config('--get', "$section.svm-source"),
2118 uuid => tmp_config('--get', "$section.svm-uuid"),
2119 replace => tmp_config('--get', "$section.svm-replace"),
2120 }
2121 };
2122 if ($svm && $svm->{source} && $svm->{uuid} && $svm->{replace}) {
2123 $self->{svm} = $svm;
2124 }
2125 $self->{svm};
2126 }
2127
2128 sub _set_svm_vars {
2129 my ($self, $ra) = @_;
2130 return $ra if $self->svm;
2131
2132 my @err = ( "useSvmProps set, but failed to read SVM properties\n",
2133 "(svm:source, svm:uuid) ",
2134 "from the following URLs:\n" );
2135 sub read_svm_props {
2136 my ($self, $ra, $path, $r) = @_;
2137 my $props = ($ra->get_dir($path, $r))[2];
2138 my $src = $props->{'svm:source'};
2139 my $uuid = $props->{'svm:uuid'};
2140 return undef if (!$src || !$uuid);
2141
2142 chomp($src, $uuid);
2143
2144 $uuid =~ m{^[0-9a-f\-]{30,}$}i
2145 or die "doesn't look right - svm:uuid is '$uuid'\n";
2146
2147 # the '!' is used to mark the repos_root!/relative/path
2148 $src =~ s{/?!/?}{/};
2149 $src =~ s{/+$}{}; # no trailing slashes please
2150 # username is of no interest
2151 $src =~ s{(^[a-z\+]*://)[^/@]*@}{$1};
2152
2153 my $replace = $ra->{url};
2154 $replace .= "/$path" if length $path;
2155
2156 my $section = "svn-remote.$self->{repo_id}";
2157 tmp_config("$section.svm-source", $src);
2158 tmp_config("$section.svm-replace", $replace);
2159 tmp_config("$section.svm-uuid", $uuid);
2160 $self->{svm} = {
2161 source => $src,
2162 uuid => $uuid,
2163 replace => $replace
2164 };
2165 }
2166
2167 my $r = $ra->get_latest_revnum;
2168 my $path = $self->{path};
2169 my %tried;
2170 while (length $path) {
2171 unless ($tried{"$self->{url}/$path"}) {
2172 return $ra if $self->read_svm_props($ra, $path, $r);
2173 $tried{"$self->{url}/$path"} = 1;
2174 }
2175 $path =~ s#/?[^/]+$##;
2176 }
2177 die "Path: '$path' should be ''\n" if $path ne '';
2178 return $ra if $self->read_svm_props($ra, $path, $r);
2179 $tried{"$self->{url}/$path"} = 1;
2180
2181 if ($ra->{repos_root} eq $self->{url}) {
2182 die @err, (map { " $_\n" } keys %tried), "\n";
2183 }
2184
2185 # nope, make sure we're connected to the repository root:
2186 my $ok;
2187 my @tried_b;
2188 $path = $ra->{svn_path};
2189 $ra = Git::SVN::Ra->new($ra->{repos_root});
2190 while (length $path) {
2191 unless ($tried{"$ra->{url}/$path"}) {
2192 $ok = $self->read_svm_props($ra, $path, $r);
2193 last if $ok;
2194 $tried{"$ra->{url}/$path"} = 1;
2195 }
2196 $path =~ s#/?[^/]+$##;
2197 }
2198 die "Path: '$path' should be ''\n" if $path ne '';
2199 $ok ||= $self->read_svm_props($ra, $path, $r);
2200 $tried{"$ra->{url}/$path"} = 1;
2201 if (!$ok) {
2202 die @err, (map { " $_\n" } keys %tried), "\n";
2203 }
2204 Git::SVN::Ra->new($self->{url});
2205 }
2206
2207 sub svnsync {
2208 my ($self) = @_;
2209 return $self->{svnsync} if $self->{svnsync};
2210
2211 if ($self->no_metadata) {
2212 die "Can't have both 'noMetadata' and ",
2213 "'useSvnsyncProps' options set!\n";
2214 }
2215 if ($self->rewrite_root) {
2216 die "Can't have both 'useSvnsyncProps' and 'rewriteRoot' ",
2217 "options set!\n";
2218 }
2219 if ($self->rewrite_uuid) {
2220 die "Can't have both 'useSvnsyncProps' and 'rewriteUUID' ",
2221 "options set!\n";
2222 }
2223
2224 my $svnsync;
2225 # see if we have it in our config, first:
2226 eval {
2227 my $section = "svn-remote.$self->{repo_id}";
2228
2229 my $url = tmp_config('--get', "$section.svnsync-url");
2230 ($url) = ($url =~ m{^([a-z\+]+://\S+)$}) or
2231 die "doesn't look right - svn:sync-from-url is '$url'\n";
2232
2233 my $uuid = tmp_config('--get', "$section.svnsync-uuid");
2234 ($uuid) = ($uuid =~ m{^([0-9a-f\-]{30,})$}i) or
2235 die "doesn't look right - svn:sync-from-uuid is '$uuid'\n";
2236
2237 $svnsync = { url => $url, uuid => $uuid }
2238 };
2239 if ($svnsync && $svnsync->{url} && $svnsync->{uuid}) {
2240 return $self->{svnsync} = $svnsync;
2241 }
2242
2243 my $err = "useSvnsyncProps set, but failed to read " .
2244 "svnsync property: svn:sync-from-";
2245 my $rp = $self->ra->rev_proplist(0);
2246
2247 my $url = $rp->{'svn:sync-from-url'} or die $err . "url\n";
2248 ($url) = ($url =~ m{^([a-z\+]+://\S+)$}) or
2249 die "doesn't look right - svn:sync-from-url is '$url'\n";
2250
2251 my $uuid = $rp->{'svn:sync-from-uuid'} or die $err . "uuid\n";
2252 ($uuid) = ($uuid =~ m{^([0-9a-f\-]{30,})$}i) or
2253 die "doesn't look right - svn:sync-from-uuid is '$uuid'\n";
2254
2255 my $section = "svn-remote.$self->{repo_id}";
2256 tmp_config('--add', "$section.svnsync-uuid", $uuid);
2257 tmp_config('--add', "$section.svnsync-url", $url);
2258 return $self->{svnsync} = { url => $url, uuid => $uuid };
2259 }
2260
2261 # this allows us to memoize our SVN::Ra UUID locally and avoid a
2262 # remote lookup (useful for 'git svn log').
2263 sub ra_uuid {
2264 my ($self) = @_;
2265 unless ($self->{ra_uuid}) {
2266 my $key = "svn-remote.$self->{repo_id}.uuid";
2267 my $uuid = eval { tmp_config('--get', $key) };
2268 if (!$@ && $uuid && $uuid =~ /^([a-f\d\-]{30,})$/i) {
2269 $self->{ra_uuid} = $uuid;
2270 } else {
2271 die "ra_uuid called without URL\n" unless $self->{url};
2272 $self->{ra_uuid} = $self->ra->get_uuid;
2273 tmp_config('--add', $key, $self->{ra_uuid});
2274 }
2275 }
2276 $self->{ra_uuid};
2277 }
2278
2279 sub _set_repos_root {
2280 my ($self, $repos_root) = @_;
2281 my $k = "svn-remote.$self->{repo_id}.reposRoot";
2282 $repos_root ||= $self->ra->{repos_root};
2283 tmp_config($k, $repos_root);
2284 $repos_root;
2285 }
2286
2287 sub repos_root {
2288 my ($self) = @_;
2289 my $k = "svn-remote.$self->{repo_id}.reposRoot";
2290 eval { tmp_config('--get', $k) } || $self->_set_repos_root;
2291 }
2292
2293 sub ra {
2294 my ($self) = shift;
2295 my $ra = Git::SVN::Ra->new($self->{url});
2296 $self->_set_repos_root($ra->{repos_root});
2297 if ($self->use_svm_props && !$self->{svm}) {
2298 if ($self->no_metadata) {
2299 die "Can't have both 'noMetadata' and ",
2300 "'useSvmProps' options set!\n";
2301 } elsif ($self->use_svnsync_props) {
2302 die "Can't have both 'useSvnsyncProps' and ",
2303 "'useSvmProps' options set!\n";
2304 }
2305 $ra = $self->_set_svm_vars($ra);
2306 $self->{-want_revprops} = 1;
2307 }
2308 $ra;
2309 }
2310
2311 # prop_walk(PATH, REV, SUB)
2312 # -------------------------
2313 # Recursively traverse PATH at revision REV and invoke SUB for each
2314 # directory that contains a SVN property. SUB will be invoked as
2315 # follows: &SUB(gs, path, props); where `gs' is this instance of
2316 # Git::SVN, `path' the path to the directory where the properties
2317 # `props' were found. The `path' will be relative to point of checkout,
2318 # that is, if url://repo/trunk is the current Git branch, and that
2319 # directory contains a sub-directory `d', SUB will be invoked with `/d/'
2320 # as `path' (note the trailing `/').
2321 sub prop_walk {
2322 my ($self, $path, $rev, $sub) = @_;
2323
2324 $path =~ s#^/##;
2325 my ($dirent, undef, $props) = $self->ra->get_dir($path, $rev);
2326 $path =~ s#^/*#/#g;
2327 my $p = $path;
2328 # Strip the irrelevant part of the path.
2329 $p =~ s#^/+\Q$self->{path}\E(/|$)#/#;
2330 # Ensure the path is terminated by a `/'.
2331 $p =~ s#/*$#/#;
2332
2333 # The properties contain all the internal SVN stuff nobody
2334 # (usually) cares about.
2335 my $interesting_props = 0;
2336 foreach (keys %{$props}) {
2337 # If it doesn't start with `svn:', it must be a
2338 # user-defined property.
2339 ++$interesting_props and next if $_ !~ /^svn:/;
2340 # FIXME: Fragile, if SVN adds new public properties,
2341 # this needs to be updated.
2342 ++$interesting_props if /^svn:(?:ignore|keywords|executable
2343 |eol-style|mime-type
2344 |externals|needs-lock)$/x;
2345 }
2346 &$sub($self, $p, $props) if $interesting_props;
2347
2348 foreach (sort keys %$dirent) {
2349 next if $dirent->{$_}->{kind} != $SVN::Node::dir;
2350 $self->prop_walk($self->{path} . $p . $_, $rev, $sub);
2351 }
2352 }
2353
2354 sub last_rev { ($_[0]->last_rev_commit)[0] }
2355 sub last_commit { ($_[0]->last_rev_commit)[1] }
2356
2357 # returns the newest SVN revision number and newest commit SHA1
2358 sub last_rev_commit {
2359 my ($self) = @_;
2360 if (defined $self->{last_rev} && defined $self->{last_commit}) {
2361 return ($self->{last_rev}, $self->{last_commit});
2362 }
2363 my $c = ::verify_ref($self->refname.'^0');
2364 if ($c && !$self->use_svm_props && !$self->no_metadata) {
2365 my $rev = (::cmt_metadata($c))[1];
2366 if (defined $rev) {
2367 ($self->{last_rev}, $self->{last_commit}) = ($rev, $c);
2368 return ($rev, $c);
2369 }
2370 }
2371 my $map_path = $self->map_path;
2372 unless (-e $map_path) {
2373 ($self->{last_rev}, $self->{last_commit}) = (undef, undef);
2374 return (undef, undef);
2375 }
2376 my ($rev, $commit) = $self->rev_map_max(1);
2377 ($self->{last_rev}, $self->{last_commit}) = ($rev, $commit);
2378 return ($rev, $commit);
2379 }
2380
2381 sub get_fetch_range {
2382 my ($self, $min, $max) = @_;
2383 $max ||= $self->ra->get_latest_revnum;
2384 $min ||= $self->rev_map_max;
2385 (++$min, $max);
2386 }
2387
2388 sub tmp_config {
2389 my (@args) = @_;
2390 my $old_def_config = "$ENV{GIT_DIR}/svn/config";
2391 my $config = "$ENV{GIT_DIR}/svn/.metadata";
2392 if (! -f $config && -f $old_def_config) {
2393 rename $old_def_config, $config or
2394 die "Failed rename $old_def_config => $config: $!\n";
2395 }
2396 my $old_config = $ENV{GIT_CONFIG};
2397 $ENV{GIT_CONFIG} = $config;
2398 $@ = undef;
2399 my @ret = eval {
2400 unless (-f $config) {
2401 mkfile($config);
2402 open my $fh, '>', $config or
2403 die "Can't open $config: $!\n";
2404 print $fh "; This file is used internally by ",
2405 "git-svn\n" or die
2406 "Couldn't write to $config: $!\n";
2407 print $fh "; You should not have to edit it\n" or
2408 die "Couldn't write to $config: $!\n";
2409 close $fh or die "Couldn't close $config: $!\n";
2410 }
2411 command('config', @args);
2412 };
2413 my $err = $@;
2414 if (defined $old_config) {
2415 $ENV{GIT_CONFIG} = $old_config;
2416 } else {
2417 delete $ENV{GIT_CONFIG};
2418 }
2419 die $err if $err;
2420 wantarray ? @ret : $ret[0];
2421 }
2422
2423 sub tmp_index_do {
2424 my ($self, $sub) = @_;
2425 my $old_index = $ENV{GIT_INDEX_FILE};
2426 $ENV{GIT_INDEX_FILE} = $self->{index};
2427 $@ = undef;
2428 my @ret = eval {
2429 my ($dir, $base) = ($self->{index} =~ m#^(.*?)/?([^/]+)$#);
2430 mkpath([$dir]) unless -d $dir;
2431 &$sub;
2432 };
2433 my $err = $@;
2434 if (defined $old_index) {
2435 $ENV{GIT_INDEX_FILE} = $old_index;
2436 } else {
2437 delete $ENV{GIT_INDEX_FILE};
2438 }
2439 die $err if $err;
2440 wantarray ? @ret : $ret[0];
2441 }
2442
2443 sub assert_index_clean {
2444 my ($self, $treeish) = @_;
2445
2446 $self->tmp_index_do(sub {
2447 command_noisy('read-tree', $treeish) unless -e $self->{index};
2448 my $x = command_oneline('write-tree');
2449 my ($y) = (command(qw/cat-file commit/, $treeish) =~
2450 /^tree ($::sha1)/mo);
2451 return if $y eq $x;
2452
2453 warn "Index mismatch: $y != $x\nrereading $treeish\n";
2454 unlink $self->{index} or die "unlink $self->{index}: $!\n";
2455 command_noisy('read-tree', $treeish);
2456 $x = command_oneline('write-tree');
2457 if ($y ne $x) {
2458 ::fatal "trees ($treeish) $y != $x\n",
2459 "Something is seriously wrong...";
2460 }
2461 });
2462 }
2463
2464 sub get_commit_parents {
2465 my ($self, $log_entry) = @_;
2466 my (%seen, @ret, @tmp);
2467 # legacy support for 'set-tree'; this is only used by set_tree_cb:
2468 if (my $ip = $self->{inject_parents}) {
2469 if (my $commit = delete $ip->{$log_entry->{revision}}) {
2470 push @tmp, $commit;
2471 }
2472 }
2473 if (my $cur = ::verify_ref($self->refname.'^0')) {
2474 push @tmp, $cur;
2475 }
2476 if (my $ipd = $self->{inject_parents_dcommit}) {
2477 if (my $commit = delete $ipd->{$log_entry->{revision}}) {
2478 push @tmp, @$commit;
2479 }
2480 }
2481 push @tmp, $_ foreach (@{$log_entry->{parents}}, @tmp);
2482 while (my $p = shift @tmp) {
2483 next if $seen{$p};
2484 $seen{$p} = 1;
2485 push @ret, $p;
2486 }
2487 @ret;
2488 }
2489
2490 sub rewrite_root {
2491 my ($self) = @_;
2492 return $self->{-rewrite_root} if exists $self->{-rewrite_root};
2493 my $k = "svn-remote.$self->{repo_id}.rewriteRoot";
2494 my $rwr = eval { command_oneline(qw/config --get/, $k) };
2495 if ($rwr) {
2496 $rwr =~ s#/+$##;
2497 if ($rwr !~ m#^[a-z\+]+://#) {
2498 die "$rwr is not a valid URL (key: $k)\n";
2499 }
2500 }
2501 $self->{-rewrite_root} = $rwr;
2502 }
2503
2504 sub rewrite_uuid {
2505 my ($self) = @_;
2506 return $self->{-rewrite_uuid} if exists $self->{-rewrite_uuid};
2507 my $k = "svn-remote.$self->{repo_id}.rewriteUUID";
2508 my $rwid = eval { command_oneline(qw/config --get/, $k) };
2509 if ($rwid) {
2510 $rwid =~ s#/+$##;
2511 if ($rwid !~ m#^[a-f0-9]{8}-(?:[a-f0-9]{4}-){3}[a-f0-9]{12}$#) {
2512 die "$rwid is not a valid UUID (key: $k)\n";
2513 }
2514 }
2515 $self->{-rewrite_uuid} = $rwid;
2516 }
2517
2518 sub metadata_url {
2519 my ($self) = @_;
2520 ($self->rewrite_root || $self->{url}) .
2521 (length $self->{path} ? '/' . $self->{path} : '');
2522 }
2523
2524 sub full_url {
2525 my ($self) = @_;
2526 $self->{url} . (length $self->{path} ? '/' . $self->{path} : '');
2527 }
2528
2529
2530 sub set_commit_header_env {
2531 my ($log_entry) = @_;
2532 my %env;
2533 foreach my $ned (qw/NAME EMAIL DATE/) {
2534 foreach my $ac (qw/AUTHOR COMMITTER/) {
2535 $env{"GIT_${ac}_${ned}"} = $ENV{"GIT_${ac}_${ned}"};
2536 }
2537 }
2538
2539 $ENV{GIT_AUTHOR_NAME} = $log_entry->{name};
2540 $ENV{GIT_AUTHOR_EMAIL} = $log_entry->{email};
2541 $ENV{GIT_AUTHOR_DATE} = $ENV{GIT_COMMITTER_DATE} = $log_entry->{date};
2542
2543 $ENV{GIT_COMMITTER_NAME} = (defined $log_entry->{commit_name})
2544 ? $log_entry->{commit_name}
2545 : $log_entry->{name};
2546 $ENV{GIT_COMMITTER_EMAIL} = (defined $log_entry->{commit_email})
2547 ? $log_entry->{commit_email}
2548 : $log_entry->{email};
2549 \%env;
2550 }
2551
2552 sub restore_commit_header_env {
2553 my ($env) = @_;
2554 foreach my $ned (qw/NAME EMAIL DATE/) {
2555 foreach my $ac (qw/AUTHOR COMMITTER/) {
2556 my $k = "GIT_${ac}_${ned}";
2557 if (defined $env->{$k}) {
2558 $ENV{$k} = $env->{$k};
2559 } else {
2560 delete $ENV{$k};
2561 }
2562 }
2563 }
2564 }
2565
2566 sub gc {
2567 command_noisy('gc', '--auto');
2568 };
2569
2570 sub do_git_commit {
2571 my ($self, $log_entry) = @_;
2572 my $lr = $self->last_rev;
2573 if (defined $lr && $lr >= $log_entry->{revision}) {
2574 die "Last fetched revision of ", $self->refname,
2575 " was r$lr, but we are about to fetch: ",
2576 "r$log_entry->{revision}!\n";
2577 }
2578 if (my $c = $self->rev_map_get($log_entry->{revision})) {
2579 croak "$log_entry->{revision} = $c already exists! ",
2580 "Why are we refetching it?\n";
2581 }
2582 my $old_env = set_commit_header_env($log_entry);
2583 my $tree = $log_entry->{tree};
2584 if (!defined $tree) {
2585 $tree = $self->tmp_index_do(sub {
2586 command_oneline('write-tree') });
2587 }
2588 die "Tree is not a valid sha1: $tree\n" if $tree !~ /^$::sha1$/o;
2589
2590 my @exec = ('git', 'commit-tree', $tree);
2591 foreach ($self->get_commit_parents($log_entry)) {
2592 push @exec, '-p', $_;
2593 }
2594 defined(my $pid = open3(my $msg_fh, my $out_fh, '>&STDERR', @exec))
2595 or croak $!;
2596 binmode $msg_fh;
2597
2598 # we always get UTF-8 from SVN, but we may want our commits in
2599 # a different encoding.
2600 if (my $enc = Git::config('i18n.commitencoding')) {
2601 require Encode;
2602 Encode::from_to($log_entry->{log}, 'UTF-8', $enc);
2603 }
2604 print $msg_fh $log_entry->{log} or croak $!;
2605 restore_commit_header_env($old_env);
2606 unless ($self->no_metadata) {
2607 print $msg_fh "\ngit-svn-id: $log_entry->{metadata}\n"
2608 or croak $!;
2609 }
2610 $msg_fh->flush == 0 or croak $!;
2611 close $msg_fh or croak $!;
2612 chomp(my $commit = do { local $/; <$out_fh> });
2613 close $out_fh or croak $!;
2614 waitpid $pid, 0;
2615 croak $? if $?;
2616 if ($commit !~ /^$::sha1$/o) {
2617 die "Failed to commit, invalid sha1: $commit\n";
2618 }
2619
2620 $self->rev_map_set($log_entry->{revision}, $commit, 1);
2621
2622 $self->{last_rev} = $log_entry->{revision};
2623 $self->{last_commit} = $commit;
2624 print "r$log_entry->{revision}" unless $::_q > 1;
2625 if (defined $log_entry->{svm_revision}) {
2626 print " (\@$log_entry->{svm_revision})" unless $::_q > 1;
2627 $self->rev_map_set($log_entry->{svm_revision}, $commit,
2628 0, $self->svm_uuid);
2629 }
2630 print " = $commit ($self->{ref_id})\n" unless $::_q > 1;
2631 if (--$_gc_nr == 0) {
2632 $_gc_nr = $_gc_period;
2633 gc();
2634 }
2635 return $commit;
2636 }
2637
2638 sub match_paths {
2639 my ($self, $paths, $r) = @_;
2640 return 1 if $self->{path} eq '';
2641 if (my $path = $paths->{"/$self->{path}"}) {
2642 return ($path->{action} eq 'D') ? 0 : 1;
2643 }
2644 $self->{path_regex} ||= qr/^\/\Q$self->{path}\E\//;
2645 if (grep /$self->{path_regex}/, keys %$paths) {
2646 return 1;
2647 }
2648 my $c = '';
2649 foreach (split m#/#, $self->{path}) {
2650 $c .= "/$_";
2651 next unless ($paths->{$c} &&
2652 ($paths->{$c}->{action} =~ /^[AR]$/));
2653 if ($self->ra->check_path($self->{path}, $r) ==
2654 $SVN::Node::dir) {
2655 return 1;
2656 }
2657 }
2658 return 0;
2659 }
2660
2661 sub find_parent_branch {
2662 my ($self, $paths, $rev) = @_;
2663 return undef unless $self->follow_parent;
2664 unless (defined $paths) {
2665 my $err_handler = $SVN::Error::handler;
2666 $SVN::Error::handler = \&Git::SVN::Ra::skip_unknown_revs;
2667 $self->ra->get_log([$self->{path}], $rev, $rev, 0, 1, 1,
2668 sub { $paths = $_[0] });
2669 $SVN::Error::handler = $err_handler;
2670 }
2671 return undef unless defined $paths;
2672
2673 # look for a parent from another branch:
2674 my @b_path_components = split m#/#, $self->{path};
2675 my @a_path_components;
2676 my $i;
2677 while (@b_path_components) {
2678 $i = $paths->{'/'.join('/', @b_path_components)};
2679 last if $i && defined $i->{copyfrom_path};
2680 unshift(@a_path_components, pop(@b_path_components));
2681 }
2682 return undef unless defined $i && defined $i->{copyfrom_path};
2683 my $branch_from = $i->{copyfrom_path};
2684 if (@a_path_components) {
2685 print STDERR "branch_from: $branch_from => ";
2686 $branch_from .= '/'.join('/', @a_path_components);
2687 print STDERR $branch_from, "\n";
2688 }
2689 my $r = $i->{copyfrom_rev};
2690 my $repos_root = $self->ra->{repos_root};
2691 my $url = $self->ra->{url};
2692 my $new_url = $url . $branch_from;
2693 print STDERR "Found possible branch point: ",
2694 "$new_url => ", $self->full_url, ", $r\n"
2695 unless $::_q > 1;
2696 $branch_from =~ s#^/##;
2697 my $gs = $self->other_gs($new_url, $url,
2698 $branch_from, $r, $self->{ref_id});
2699 my ($r0, $parent) = $gs->find_rev_before($r, 1);
2700 {
2701 my ($base, $head);
2702 if (!defined $r0 || !defined $parent) {
2703 ($base, $head) = parse_revision_argument(0, $r);
2704 } else {
2705 if ($r0 < $r) {
2706 $gs->ra->get_log([$gs->{path}], $r0 + 1, $r, 1,
2707 0, 1, sub { $base = $_[1] - 1 });
2708 }
2709 }
2710 if (defined $base && $base <= $r) {
2711 $gs->fetch($base, $r);
2712 }
2713 ($r0, $parent) = $gs->find_rev_before($r, 1);
2714 }
2715 if (defined $r0 && defined $parent) {
2716 print STDERR "Found branch parent: ($self->{ref_id}) $parent\n"
2717 unless $::_q > 1;
2718 my $ed;
2719 if ($self->ra->can_do_switch) {
2720 $self->assert_index_clean($parent);
2721 print STDERR "Following parent with do_switch\n"
2722 unless $::_q > 1;
2723 # do_switch works with svn/trunk >= r22312, but that
2724 # is not included with SVN 1.4.3 (the latest version
2725 # at the moment), so we can't rely on it
2726 $self->{last_rev} = $r0;
2727 $self->{last_commit} = $parent;
2728 $ed = SVN::Git::Fetcher->new($self, $gs->{path});
2729 $gs->ra->gs_do_switch($r0, $rev, $gs,
2730 $self->full_url, $ed)
2731 or die "SVN connection failed somewhere...\n";
2732 } elsif ($self->ra->trees_match($new_url, $r0,
2733 $self->full_url, $rev)) {
2734 print STDERR "Trees match:\n",
2735 " $new_url\@$r0\n",
2736 " ${\$self->full_url}\@$rev\n",
2737 "Following parent with no changes\n"
2738 unless $::_q > 1;
2739 $self->tmp_index_do(sub {
2740 command_noisy('read-tree', $parent);
2741 });
2742 $self->{last_commit} = $parent;
2743 } else {
2744 print STDERR "Following parent with do_update\n"
2745 unless $::_q > 1;
2746 $ed = SVN::Git::Fetcher->new($self);
2747 $self->ra->gs_do_update($rev, $rev, $self, $ed)
2748 or die "SVN connection failed somewhere...\n";
2749 }
2750 print STDERR "Successfully followed parent\n" unless $::_q > 1;
2751 return $self->make_log_entry($rev, [$parent], $ed);
2752 }
2753 return undef;
2754 }
2755
2756 sub do_fetch {
2757 my ($self, $paths, $rev) = @_;
2758 my $ed;
2759 my ($last_rev, @parents);
2760 if (my $lc = $self->last_commit) {
2761 # we can have a branch that was deleted, then re-added
2762 # under the same name but copied from another path, in
2763 # which case we'll have multiple parents (we don't
2764 # want to break the original ref, nor lose copypath info):
2765 if (my $log_entry = $self->find_parent_branch($paths, $rev)) {
2766 push @{$log_entry->{parents}}, $lc;
2767 return $log_entry;
2768 }
2769 $ed = SVN::Git::Fetcher->new($self);
2770 $last_rev = $self->{last_rev};
2771 $ed->{c} = $lc;
2772 @parents = ($lc);
2773 } else {
2774 $last_rev = $rev;
2775 if (my $log_entry = $self->find_parent_branch($paths, $rev)) {
2776 return $log_entry;
2777 }
2778 $ed = SVN::Git::Fetcher->new($self);
2779 }
2780 unless ($self->ra->gs_do_update($last_rev, $rev, $self, $ed)) {
2781 die "SVN connection failed somewhere...\n";
2782 }
2783 $self->make_log_entry($rev, \@parents, $ed);
2784 }
2785
2786 sub mkemptydirs {
2787 my ($self, $r) = @_;
2788
2789 sub scan {
2790 my ($r, $empty_dirs, $line) = @_;
2791 if (defined $r && $line =~ /^r(\d+)$/) {
2792 return 0 if $1 > $r;
2793 } elsif ($line =~ /^ \+empty_dir: (.+)$/) {
2794 $empty_dirs->{$1} = 1;
2795 } elsif ($line =~ /^ \-empty_dir: (.+)$/) {
2796 my @d = grep {m[^\Q$1\E(/|$)]} (keys %$empty_dirs);
2797 delete @$empty_dirs{@d};
2798 }
2799 1; # continue
2800 };
2801
2802 my %empty_dirs = ();
2803 my $gz_file = "$self->{dir}/unhandled.log.gz";
2804 if (-f $gz_file) {
2805 if (!$can_compress) {
2806 warn "Compress::Zlib could not be found; ",
2807 "empty directories in $gz_file will not be read\n";
2808 } else {
2809 my $gz = Compress::Zlib::gzopen($gz_file, "rb") or
2810 die "Unable to open $gz_file: $!\n";
2811 my $line;
2812 while ($gz->gzreadline($line) > 0) {
2813 scan($r, \%empty_dirs, $line) or last;
2814 }
2815 $gz->gzclose;
2816 }
2817 }
2818
2819 if (open my $fh, '<', "$self->{dir}/unhandled.log") {
2820 binmode $fh or croak "binmode: $!";
2821 while (<$fh>) {
2822 scan($r, \%empty_dirs, $_) or last;
2823 }
2824 close $fh;
2825 }
2826
2827 my $strip = qr/\A\Q$self->{path}\E(?:\/|$)/;
2828 foreach my $d (sort keys %empty_dirs) {
2829 $d = uri_decode($d);
2830 $d =~ s/$strip//;
2831 next if -d $d;
2832 if (-e _) {
2833 warn "$d exists but is not a directory\n";
2834 } else {
2835 print "creating empty directory: $d\n";
2836 mkpath([$d]);
2837 }
2838 }
2839 }
2840
2841 sub get_untracked {
2842 my ($self, $ed) = @_;
2843 my @out;
2844 my $h = $ed->{empty};
2845 foreach (sort keys %$h) {
2846 my $act = $h->{$_} ? '+empty_dir' : '-empty_dir';
2847 push @out, " $act: " . uri_encode($_);
2848 warn "W: $act: $_\n";
2849 }
2850 foreach my $t (qw/dir_prop file_prop/) {
2851 $h = $ed->{$t} or next;
2852 foreach my $path (sort keys %$h) {
2853 my $ppath = $path eq '' ? '.' : $path;
2854 foreach my $prop (sort keys %{$h->{$path}}) {
2855 next if $SKIP_PROP{$prop};
2856 my $v = $h->{$path}->{$prop};
2857 my $t_ppath_prop = "$t: " .
2858 uri_encode($ppath) . ' ' .
2859 uri_encode($prop);
2860 if (defined $v) {
2861 push @out, " +$t_ppath_prop " .
2862 uri_encode($v);
2863 } else {
2864 push @out, " -$t_ppath_prop";
2865 }
2866 }
2867 }
2868 }
2869 foreach my $t (qw/absent_file absent_directory/) {
2870 $h = $ed->{$t} or next;
2871 foreach my $parent (sort keys %$h) {
2872 foreach my $path (sort @{$h->{$parent}}) {
2873 push @out, " $t: " .
2874 uri_encode("$parent/$path");
2875 warn "W: $t: $parent/$path ",
2876 "Insufficient permissions?\n";
2877 }
2878 }
2879 }
2880 \@out;
2881 }
2882
2883 # parse_svn_date(DATE)
2884 # --------------------
2885 # Given a date (in UTC) from Subversion, return a string in the format
2886 # "<TZ Offset> <local date/time>" that Git will use.
2887 #
2888 # By default the parsed date will be in UTC; if $Git::SVN::_localtime
2889 # is true we'll convert it to the local timezone instead.
2890 sub parse_svn_date {
2891 my $date = shift || return '+0000 1970-01-01 00:00:00';
2892 my ($Y,$m,$d,$H,$M,$S) = ($date =~ /^(\d{4})\-(\d\d)\-(\d\d)T
2893 (\d\d)\:(\d\d)\:(\d\d)\.\d*Z$/x) or
2894 croak "Unable to parse date: $date\n";
2895 my $parsed_date; # Set next.
2896
2897 if ($Git::SVN::_localtime) {
2898 # Translate the Subversion datetime to an epoch time.
2899 # Begin by switching ourselves to $date's timezone, UTC.
2900 my $old_env_TZ = $ENV{TZ};
2901 $ENV{TZ} = 'UTC';
2902
2903 my $epoch_in_UTC =
2904 POSIX::strftime('%s', $S, $M, $H, $d, $m - 1, $Y - 1900);
2905
2906 # Determine our local timezone (including DST) at the
2907 # time of $epoch_in_UTC. $Git::SVN::Log::TZ stored the
2908 # value of TZ, if any, at the time we were run.
2909 if (defined $Git::SVN::Log::TZ) {
2910 $ENV{TZ} = $Git::SVN::Log::TZ;
2911 } else {
2912 delete $ENV{TZ};
2913 }
2914
2915 my $our_TZ =
2916 POSIX::strftime('%Z', $S, $M, $H, $d, $m - 1, $Y - 1900);
2917
2918 # This converts $epoch_in_UTC into our local timezone.
2919 my ($sec, $min, $hour, $mday, $mon, $year,
2920 $wday, $yday, $isdst) = localtime($epoch_in_UTC);
2921
2922 $parsed_date = sprintf('%s %04d-%02d-%02d %02d:%02d:%02d',
2923 $our_TZ, $year + 1900, $mon + 1,
2924 $mday, $hour, $min, $sec);
2925
2926 # Reset us to the timezone in effect when we entered
2927 # this routine.
2928 if (defined $old_env_TZ) {
2929 $ENV{TZ} = $old_env_TZ;
2930 } else {
2931 delete $ENV{TZ};
2932 }
2933 } else {
2934 $parsed_date = "+0000 $Y-$m-$d $H:$M:$S";
2935 }
2936
2937 return $parsed_date;
2938 }
2939
2940 sub other_gs {
2941 my ($self, $new_url, $url,
2942 $branch_from, $r, $old_ref_id) = @_;
2943 my $gs = Git::SVN->find_by_url($new_url, $url, $branch_from);
2944 unless ($gs) {
2945 my $ref_id = $old_ref_id;
2946 $ref_id =~ s/\@\d+$//;
2947 $ref_id .= "\@$r";
2948 # just grow a tail if we're not unique enough :x
2949 $ref_id .= '-' while find_ref($ref_id);
2950 print STDERR "Initializing parent: $ref_id\n" unless $::_q > 1;
2951 my ($u, $p, $repo_id) = ($new_url, '', $ref_id);
2952 if ($u =~ s#^\Q$url\E(/|$)##) {
2953 $p = $u;
2954 $u = $url;
2955 $repo_id = $self->{repo_id};
2956 }
2957 $gs = Git::SVN->init($u, $p, $repo_id, $ref_id, 1);
2958 }
2959 $gs
2960 }
2961
2962 sub call_authors_prog {
2963 my ($orig_author) = @_;
2964 $orig_author = command_oneline('rev-parse', '--sq-quote', $orig_author);
2965 my $author = `$::_authors_prog $orig_author`;
2966 if ($? != 0) {
2967 die "$::_authors_prog failed with exit code $?\n"
2968 }
2969 if ($author =~ /^\s*(.+?)\s*<(.*)>\s*$/) {
2970 my ($name, $email) = ($1, $2);
2971 $email = undef if length $2 == 0;
2972 return [$name, $email];
2973 } else {
2974 die "Author: $orig_author: $::_authors_prog returned "
2975 . "invalid author format: $author\n";
2976 }
2977 }
2978
2979 sub check_author {
2980 my ($author) = @_;
2981 if (!defined $author || length $author == 0) {
2982 $author = '(no author)';
2983 }
2984 if (!defined $::users{$author}) {
2985 if (defined $::_authors_prog) {
2986 $::users{$author} = call_authors_prog($author);
2987 } elsif (defined $::_authors) {
2988 die "Author: $author not defined in $::_authors file\n";
2989 }
2990 }
2991 $author;
2992 }
2993
2994 sub find_extra_svk_parents {
2995 my ($self, $ed, $tickets, $parents) = @_;
2996 # aha! svk:merge property changed...
2997 my @tickets = split "\n", $tickets;
2998 my @known_parents;
2999 for my $ticket ( @tickets ) {
3000 my ($uuid, $path, $rev) = split /:/, $ticket;
3001 if ( $uuid eq $self->ra_uuid ) {
3002 my $url = $self->{url};
3003 my $repos_root = $url;
3004 my $branch_from = $path;
3005 $branch_from =~ s{^/}{};
3006 my $gs = $self->other_gs($repos_root."/".$branch_from,
3007 $url,
3008 $branch_from,
3009 $rev,
3010 $self->{ref_id});
3011 if ( my $commit = $gs->rev_map_get($rev, $uuid) ) {
3012 # wahey! we found it, but it might be
3013 # an old one (!)
3014 push @known_parents, [ $rev, $commit ];
3015 }
3016 }
3017 }
3018 # Ordering matters; highest-numbered commit merge tickets
3019 # first, as they may account for later merge ticket additions
3020 # or changes.
3021 @known_parents = map {$_->[1]} sort {$b->[0] <=> $a->[0]} @known_parents;
3022 for my $parent ( @known_parents ) {
3023 my @cmd = ('rev-list', $parent, map { "^$_" } @$parents );
3024 my ($msg_fh, $ctx) = command_output_pipe(@cmd);
3025 my $new;
3026 while ( <$msg_fh> ) {
3027 $new=1;last;
3028 }
3029 command_close_pipe($msg_fh, $ctx);
3030 if ( $new ) {
3031 print STDERR
3032 "Found merge parent (svk:merge ticket): $parent\n";
3033 push @$parents, $parent;
3034 }
3035 }
3036 }
3037
3038 sub lookup_svn_merge {
3039 my $uuid = shift;
3040 my $url = shift;
3041 my $merge = shift;
3042
3043 my ($source, $revs) = split ":", $merge;
3044 my $path = $source;
3045 $path =~ s{^/}{};
3046 my $gs = Git::SVN->find_by_url($url.$source, $url, $path);
3047 if ( !$gs ) {
3048 warn "Couldn't find revmap for $url$source\n";
3049 return;
3050 }
3051 my @ranges = split ",", $revs;
3052 my ($tip, $tip_commit);
3053 my @merged_commit_ranges;
3054 # find the tip
3055 for my $range ( @ranges ) {
3056 my ($bottom, $top) = split "-", $range;
3057 $top ||= $bottom;
3058 my $bottom_commit = $gs->find_rev_after( $bottom, 1, $top );
3059 my $top_commit = $gs->find_rev_before( $top, 1, $bottom );
3060
3061 unless ($top_commit and $bottom_commit) {
3062 warn "W:unknown path/rev in svn:mergeinfo "
3063 ."dirprop: $source:$range\n";
3064 next;
3065 }
3066
3067 push @merged_commit_ranges,
3068 "$bottom_commit^..$top_commit";
3069
3070 if ( !defined $tip or $top > $tip ) {
3071 $tip = $top;
3072 $tip_commit = $top_commit;
3073 }
3074 }
3075 return ($tip_commit, @merged_commit_ranges);
3076 }
3077
3078 sub _rev_list {
3079 my ($msg_fh, $ctx) = command_output_pipe(
3080 "rev-list", @_,
3081 );
3082 my @rv;
3083 while ( <$msg_fh> ) {
3084 chomp;
3085 push @rv, $_;
3086 }
3087 command_close_pipe($msg_fh, $ctx);
3088 @rv;
3089 }
3090
3091 sub check_cherry_pick {
3092 my $base = shift;
3093 my $tip = shift;
3094 my @ranges = @_;
3095 my %commits = map { $_ => 1 }
3096 _rev_list("--no-merges", $tip, "--not", $base);
3097 for my $range ( @ranges ) {
3098 delete @commits{_rev_list($range)};
3099 }
3100 for my $commit (keys %commits) {
3101 if (has_no_changes($commit)) {
3102 delete $commits{$commit};
3103 }
3104 }
3105 return (keys %commits);
3106 }
3107
3108 sub has_no_changes {
3109 my $commit = shift;
3110
3111 my @revs = split / /, command_oneline(
3112 qw(rev-list --parents -1 -m), $commit);
3113
3114 # Commits with no parents, e.g. the start of a partial branch,
3115 # have changes by definition.
3116 return 1 if (@revs < 2);
3117
3118 # Commits with multiple parents, e.g a merge, have no changes
3119 # by definition.
3120 return 0 if (@revs > 2);
3121
3122 return (command_oneline("rev-parse", "$commit^{tree}") eq
3123 command_oneline("rev-parse", "$commit~1^{tree}"));
3124 }
3125
3126 # The GIT_DIR environment variable is not always set until after the command
3127 # line arguments are processed, so we can't memoize in a BEGIN block.
3128 {
3129 my $memoized = 0;
3130
3131 sub memoize_svn_mergeinfo_functions {
3132 return if $memoized;
3133 $memoized = 1;
3134
3135 my $cache_path = "$ENV{GIT_DIR}/svn/.caches/";
3136 mkpath([$cache_path]) unless -d $cache_path;
3137
3138 tie my %lookup_svn_merge_cache => 'Memoize::Storable',
3139 "$cache_path/lookup_svn_merge.db", 'nstore';
3140 memoize 'lookup_svn_merge',
3141 SCALAR_CACHE => 'FAULT',
3142 LIST_CACHE => ['HASH' => \%lookup_svn_merge_cache],
3143 ;
3144
3145 tie my %check_cherry_pick_cache => 'Memoize::Storable',
3146 "$cache_path/check_cherry_pick.db", 'nstore';
3147 memoize 'check_cherry_pick',
3148 SCALAR_CACHE => 'FAULT',
3149 LIST_CACHE => ['HASH' => \%check_cherry_pick_cache],
3150 ;
3151
3152 tie my %has_no_changes_cache => 'Memoize::Storable',
3153 "$cache_path/has_no_changes.db", 'nstore';
3154 memoize 'has_no_changes',
3155 SCALAR_CACHE => ['HASH' => \%has_no_changes_cache],
3156 LIST_CACHE => 'FAULT',
3157 ;
3158 }
3159 }
3160
3161 sub parents_exclude {
3162 my $parents = shift;
3163 my @commits = @_;
3164 return unless @commits;
3165
3166 my @excluded;
3167 my $excluded;
3168 do {
3169 my @cmd = ('rev-list', "-1", @commits, "--not", @$parents );
3170 $excluded = command_oneline(@cmd);
3171 if ( $excluded ) {
3172 my @new;
3173 my $found;
3174 for my $commit ( @commits ) {
3175 if ( $commit eq $excluded ) {
3176 push @excluded, $commit;
3177 $found++;
3178 last;
3179 }
3180 else {
3181 push @new, $commit;
3182 }
3183 }
3184 die "saw commit '$excluded' in rev-list output, "
3185 ."but we didn't ask for that commit (wanted: @commits --not @$parents)"
3186 unless $found;
3187 @commits = @new;
3188 }
3189 }
3190 while ($excluded and @commits);
3191
3192 return @excluded;
3193 }
3194
3195
3196 # note: this function should only be called if the various dirprops
3197 # have actually changed
3198 sub find_extra_svn_parents {
3199 my ($self, $ed, $mergeinfo, $parents) = @_;
3200 # aha! svk:merge property changed...
3201
3202 memoize_svn_mergeinfo_functions();
3203
3204 # We first search for merged tips which are not in our
3205 # history. Then, we figure out which git revisions are in
3206 # that tip, but not this revision. If all of those revisions
3207 # are now marked as merge, we can add the tip as a parent.
3208 my @merges = split "\n", $mergeinfo;
3209 my @merge_tips;
3210 my $url = $self->{url};
3211 my $uuid = $self->ra_uuid;
3212 my %ranges;
3213 for my $merge ( @merges ) {
3214 my ($tip_commit, @ranges) =
3215 lookup_svn_merge( $uuid, $url, $merge );
3216 unless (!$tip_commit or
3217 grep { $_ eq $tip_commit } @$parents ) {
3218 push @merge_tips, $tip_commit;
3219 $ranges{$tip_commit} = \@ranges;
3220 } else {
3221 push @merge_tips, undef;
3222 }
3223 }
3224
3225 my %excluded = map { $_ => 1 }
3226 parents_exclude($parents, grep { defined } @merge_tips);
3227
3228 # check merge tips for new parents
3229 my @new_parents;
3230 for my $merge_tip ( @merge_tips ) {
3231 my $spec = shift @merges;
3232 next unless $merge_tip and $excluded{$merge_tip};
3233
3234 my $ranges = $ranges{$merge_tip};
3235
3236 # check out 'new' tips
3237 my $merge_base;
3238 eval {
3239 $merge_base = command_oneline(
3240 "merge-base",
3241 @$parents, $merge_tip,
3242 );
3243 };
3244 if ($@) {
3245 die "An error occurred during merge-base"
3246 unless $@->isa("Git::Error::Command");
3247
3248 warn "W: Cannot find common ancestor between ".
3249 "@$parents and $merge_tip. Ignoring merge info.\n";
3250 next;
3251 }
3252
3253 # double check that there are no missing non-merge commits
3254 my (@incomplete) = check_cherry_pick(
3255 $merge_base, $merge_tip,
3256 @$ranges,
3257 );
3258
3259 if ( @incomplete ) {
3260 warn "W:svn cherry-pick ignored ($spec) - missing "
3261 .@incomplete." commit(s) (eg $incomplete[0])\n";
3262 } else {
3263 warn
3264 "Found merge parent (svn:mergeinfo prop): ",
3265 $merge_tip, "\n";
3266 push @new_parents, $merge_tip;
3267 }
3268 }
3269
3270 # cater for merges which merge commits from multiple branches
3271 if ( @new_parents > 1 ) {
3272 for ( my $i = 0; $i <= $#new_parents; $i++ ) {
3273 for ( my $j = 0; $j <= $#new_parents; $j++ ) {
3274 next if $i == $j;
3275 next unless $new_parents[$i];
3276 next unless $new_parents[$j];
3277 my $revs = command_oneline(
3278 "rev-list", "-1",
3279 "$new_parents[$i]..$new_parents[$j]",
3280 );
3281 if ( !$revs ) {
3282 undef($new_parents[$j]);
3283 }
3284 }
3285 }
3286 }
3287 push @$parents, grep { defined } @new_parents;
3288 }
3289
3290 sub make_log_entry {
3291 my ($self, $rev, $parents, $ed) = @_;
3292 my $untracked = $self->get_untracked($ed);
3293
3294 my @parents = @$parents;
3295 my $ps = $ed->{path_strip} || "";
3296 for my $path ( grep { m/$ps/ } %{$ed->{dir_prop}} ) {
3297 my $props = $ed->{dir_prop}{$path};
3298 if ( $props->{"svk:merge"} ) {
3299 $self->find_extra_svk_parents
3300 ($ed, $props->{"svk:merge"}, \@parents);
3301 }
3302 if ( $props->{"svn:mergeinfo"} ) {
3303 $self->find_extra_svn_parents
3304 ($ed,
3305 $props->{"svn:mergeinfo"},
3306 \@parents);
3307 }
3308 }
3309
3310 open my $un, '>>', "$self->{dir}/unhandled.log" or croak $!;
3311 print $un "r$rev\n" or croak $!;
3312 print $un $_, "\n" foreach @$untracked;
3313 my %log_entry = ( parents => \@parents, revision => $rev,
3314 log => '');
3315
3316 my $headrev;
3317 my $logged = delete $self->{logged_rev_props};
3318 if (!$logged || $self->{-want_revprops}) {
3319 my $rp = $self->ra->rev_proplist($rev);
3320 foreach (sort keys %$rp) {
3321 my $v = $rp->{$_};
3322 if (/^svn:(author|date|log)$/) {
3323 $log_entry{$1} = $v;
3324 } elsif ($_ eq 'svm:headrev') {
3325 $headrev = $v;
3326 } else {
3327 print $un " rev_prop: ", uri_encode($_), ' ',
3328 uri_encode($v), "\n";
3329 }
3330 }
3331 } else {
3332 map { $log_entry{$_} = $logged->{$_} } keys %$logged;
3333 }
3334 close $un or croak $!;
3335
3336 $log_entry{date} = parse_svn_date($log_entry{date});
3337 $log_entry{log} .= "\n";
3338 my $author = $log_entry{author} = check_author($log_entry{author});
3339 my ($name, $email) = defined $::users{$author} ? @{$::users{$author}}
3340 : ($author, undef);
3341
3342 my ($commit_name, $commit_email) = ($name, $email);
3343 if ($_use_log_author) {
3344 my $name_field;
3345 if ($log_entry{log} =~ /From:\s+(.*\S)\s*\n/i) {
3346 $name_field = $1;
3347 } elsif ($log_entry{log} =~ /Signed-off-by:\s+(.*\S)\s*\n/i) {
3348 $name_field = $1;
3349 }
3350 if (!defined $name_field) {
3351 if (!defined $email) {
3352 $email = $name;
3353 }
3354 } elsif ($name_field =~ /(.*?)\s+<(.*)>/) {
3355 ($name, $email) = ($1, $2);
3356 } elsif ($name_field =~ /(.*)@/) {
3357 ($name, $email) = ($1, $name_field);
3358 } else {
3359 ($name, $email) = ($name_field, $name_field);
3360 }
3361 }
3362 if (defined $headrev && $self->use_svm_props) {
3363 if ($self->rewrite_root) {
3364 die "Can't have both 'useSvmProps' and 'rewriteRoot' ",
3365 "options set!\n";
3366 }
3367 if ($self->rewrite_uuid) {
3368 die "Can't have both 'useSvmProps' and 'rewriteUUID' ",
3369 "options set!\n";
3370 }
3371 my ($uuid, $r) = $headrev =~ m{^([a-f\d\-]{30,}):(\d+)$}i;
3372 # we don't want "SVM: initializing mirror for junk" ...
3373 return undef if $r == 0;
3374 my $svm = $self->svm;
3375 if ($uuid ne $svm->{uuid}) {
3376 die "UUID mismatch on SVM path:\n",
3377 "expected: $svm->{uuid}\n",
3378 " got: $uuid\n";
3379 }
3380 my $full_url = $self->full_url;
3381 $full_url =~ s#^\Q$svm->{replace}\E(/|$)#$svm->{source}$1# or
3382 die "Failed to replace '$svm->{replace}' with ",
3383 "'$svm->{source}' in $full_url\n";
3384 # throw away username for storing in records
3385 remove_username($full_url);
3386 $log_entry{metadata} = "$full_url\@$r $uuid";
3387 $log_entry{svm_revision} = $r;
3388 $email ||= "$author\@$uuid";
3389 $commit_email ||= "$author\@$uuid";
3390 } elsif ($self->use_svnsync_props) {
3391 my $full_url = $self->svnsync->{url};
3392 $full_url .= "/$self->{path}" if length $self->{path};
3393 remove_username($full_url);
3394 my $uuid = $self->svnsync->{uuid};
3395 $log_entry{metadata} = "$full_url\@$rev $uuid";
3396 $email ||= "$author\@$uuid";
3397 $commit_email ||= "$author\@$uuid";
3398 } else {
3399 my $url = $self->metadata_url;
3400 remove_username($url);
3401 my $uuid = $self->rewrite_uuid || $self->ra->get_uuid;
3402 $log_entry{metadata} = "$url\@$rev " . $uuid;
3403 $email ||= "$author\@" . $uuid;
3404 $commit_email ||= "$author\@" . $uuid;
3405 }
3406 $log_entry{name} = $name;
3407 $log_entry{email} = $email;
3408 $log_entry{commit_name} = $commit_name;
3409 $log_entry{commit_email} = $commit_email;
3410 \%log_entry;
3411 }
3412
3413 sub fetch {
3414 my ($self, $min_rev, $max_rev, @parents) = @_;
3415 my ($last_rev, $last_commit) = $self->last_rev_commit;
3416 my ($base, $head) = $self->get_fetch_range($min_rev, $max_rev);
3417 $self->ra->gs_fetch_loop_common($base, $head, [$self]);
3418 }
3419
3420 sub set_tree_cb {
3421 my ($self, $log_entry, $tree, $rev, $date, $author) = @_;
3422 $self->{inject_parents} = { $rev => $tree };
3423 $self->fetch(undef, undef);
3424 }
3425
3426 sub set_tree {
3427 my ($self, $tree) = (shift, shift);
3428 my $log_entry = ::get_commit_entry($tree);
3429 unless ($self->{last_rev}) {
3430 ::fatal("Must have an existing revision to commit");
3431 }
3432 my %ed_opts = ( r => $self->{last_rev},
3433 log => $log_entry->{log},
3434 ra => $self->ra,
3435 tree_a => $self->{last_commit},
3436 tree_b => $tree,
3437 editor_cb => sub {
3438 $self->set_tree_cb($log_entry, $tree, @_) },
3439 svn_path => $self->{path} );
3440 if (!SVN::Git::Editor->new(\%ed_opts)->apply_diff) {
3441 print "No changes\nr$self->{last_rev} = $tree\n";
3442 }
3443 }
3444
3445 sub rebuild_from_rev_db {
3446 my ($self, $path) = @_;
3447 my $r = -1;
3448 open my $fh, '<', $path or croak "open: $!";
3449 binmode $fh or croak "binmode: $!";
3450 while (<$fh>) {
3451 length($_) == 41 or croak "inconsistent size in ($_) != 41";
3452 chomp($_);
3453 ++$r;
3454 next if $_ eq ('0' x 40);
3455 $self->rev_map_set($r, $_);
3456 print "r$r = $_\n";
3457 }
3458 close $fh or croak "close: $!";
3459 unlink $path or croak "unlink: $!";
3460 }
3461
3462 sub rebuild {
3463 my ($self) = @_;
3464 my $map_path = $self->map_path;
3465 my $partial = (-e $map_path && ! -z $map_path);
3466 return unless ::verify_ref($self->refname.'^0');
3467 if (!$partial && ($self->use_svm_props || $self->no_metadata)) {
3468 my $rev_db = $self->rev_db_path;
3469 $self->rebuild_from_rev_db($rev_db);
3470 if ($self->use_svm_props) {
3471 my $svm_rev_db = $self->rev_db_path($self->svm_uuid);
3472 $self->rebuild_from_rev_db($svm_rev_db);
3473 }
3474 $self->unlink_rev_db_symlink;
3475 return;
3476 }
3477 print "Rebuilding $map_path ...\n" if (!$partial);
3478 my ($base_rev, $head) = ($partial ? $self->rev_map_max_norebuild(1) :
3479 (undef, undef));
3480 my ($log, $ctx) =
3481 command_output_pipe(qw/rev-list --pretty=raw --no-color --reverse/,
3482 ($head ? "$head.." : "") . $self->refname,
3483 '--');
3484 my $metadata_url = $self->metadata_url;
3485 remove_username($metadata_url);
3486 my $svn_uuid = $self->rewrite_uuid || $self->ra_uuid;
3487 my $c;
3488 while (<$log>) {
3489 if ( m{^commit ($::sha1)$} ) {
3490 $c = $1;
3491 next;
3492 }
3493 next unless s{^\s*(git-svn-id:)}{$1};
3494 my ($url, $rev, $uuid) = ::extract_metadata($_);
3495 remove_username($url);
3496
3497 # ignore merges (from set-tree)
3498 next if (!defined $rev || !$uuid);
3499
3500 # if we merged or otherwise started elsewhere, this is
3501 # how we break out of it
3502 if (($uuid ne $svn_uuid) ||
3503 ($metadata_url && $url && ($url ne $metadata_url))) {
3504 next;
3505 }
3506 if ($partial && $head) {
3507 print "Partial-rebuilding $map_path ...\n";
3508 print "Currently at $base_rev = $head\n";
3509 $head = undef;
3510 }
3511
3512 $self->rev_map_set($rev, $c);
3513 print "r$rev = $c\n";
3514 }
3515 command_close_pipe($log, $ctx);
3516 print "Done rebuilding $map_path\n" if (!$partial || !$head);
3517 my $rev_db_path = $self->rev_db_path;
3518 if (-f $self->rev_db_path) {
3519 unlink $self->rev_db_path or croak "unlink: $!";
3520 }
3521 $self->unlink_rev_db_symlink;
3522 }
3523
3524 # rev_map:
3525 # Tie::File seems to be prone to offset errors if revisions get sparse,
3526 # it's not that fast, either. Tie::File is also not in Perl 5.6. So
3527 # one of my favorite modules is out :< Next up would be one of the DBM
3528 # modules, but I'm not sure which is most portable...
3529 #
3530 # This is the replacement for the rev_db format, which was too big
3531 # and inefficient for large repositories with a lot of sparse history
3532 # (mainly tags)
3533 #
3534 # The format is this:
3535 # - 24 bytes for every record,
3536 # * 4 bytes for the integer representing an SVN revision number
3537 # * 20 bytes representing the sha1 of a git commit
3538 # - No empty padding records like the old format
3539 # (except the last record, which can be overwritten)
3540 # - new records are written append-only since SVN revision numbers
3541 # increase monotonically
3542 # - lookups on SVN revision number are done via a binary search
3543 # - Piping the file to xxd -c24 is a good way of dumping it for
3544 # viewing or editing (piped back through xxd -r), should the need
3545 # ever arise.
3546 # - The last record can be padding revision with an all-zero sha1
3547 # This is used to optimize fetch performance when using multiple
3548 # "fetch" directives in .git/config
3549 #
3550 # These files are disposable unless noMetadata or useSvmProps is set
3551
3552 sub _rev_map_set {
3553 my ($fh, $rev, $commit) = @_;
3554
3555 binmode $fh or croak "binmode: $!";
3556 my $size = (stat($fh))[7];
3557 ($size % 24) == 0 or croak "inconsistent size: $size";
3558
3559 my $wr_offset = 0;
3560 if ($size > 0) {
3561 sysseek($fh, -24, SEEK_END) or croak "seek: $!";
3562 my $read = sysread($fh, my $buf, 24) or croak "read: $!";
3563 $read == 24 or croak "read only $read bytes (!= 24)";
3564 my ($last_rev, $last_commit) = unpack(rev_map_fmt, $buf);
3565 if ($last_commit eq ('0' x40)) {
3566 if ($size >= 48) {
3567 sysseek($fh, -48, SEEK_END) or croak "seek: $!";
3568 $read = sysread($fh, $buf, 24) or
3569 croak "read: $!";
3570 $read == 24 or
3571 croak "read only $read bytes (!= 24)";
3572 ($last_rev, $last_commit) =
3573 unpack(rev_map_fmt, $buf);
3574 if ($last_commit eq ('0' x40)) {
3575 croak "inconsistent .rev_map\n";
3576 }
3577 }
3578 if ($last_rev >= $rev) {
3579 croak "last_rev is higher!: $last_rev >= $rev";
3580 }
3581 $wr_offset = -24;
3582 }
3583 }
3584 sysseek($fh, $wr_offset, SEEK_END) or croak "seek: $!";
3585 syswrite($fh, pack(rev_map_fmt, $rev, $commit), 24) == 24 or
3586 croak "write: $!";
3587 }
3588
3589 sub _rev_map_reset {
3590 my ($fh, $rev, $commit) = @_;
3591 my $c = _rev_map_get($fh, $rev);
3592 $c eq $commit or die "_rev_map_reset(@_) commit $c does not match!\n";
3593 my $offset = sysseek($fh, 0, SEEK_CUR) or croak "seek: $!";
3594 truncate $fh, $offset or croak "truncate: $!";
3595 }
3596
3597 sub mkfile {
3598 my ($path) = @_;
3599 unless (-e $path) {
3600 my ($dir, $base) = ($path =~ m#^(.*?)/?([^/]+)$#);
3601 mkpath([$dir]) unless -d $dir;
3602 open my $fh, '>>', $path or die "Couldn't create $path: $!\n";
3603 close $fh or die "Couldn't close (create) $path: $!\n";
3604 }
3605 }
3606
3607 sub rev_map_set {
3608 my ($self, $rev, $commit, $update_ref, $uuid) = @_;
3609 defined $commit or die "missing arg3\n";
3610 length $commit == 40 or die "arg3 must be a full SHA1 hexsum\n";
3611 my $db = $self->map_path($uuid);
3612 my $db_lock = "$db.lock";
3613 my $sig;
3614 $update_ref ||= 0;
3615 if ($update_ref) {
3616 $SIG{INT} = $SIG{HUP} = $SIG{TERM} = $SIG{ALRM} = $SIG{PIPE} =
3617 $SIG{USR1} = $SIG{USR2} = sub { $sig = $_[0] };
3618 }
3619 mkfile($db);
3620
3621 $LOCKFILES{$db_lock} = 1;
3622 my $sync;
3623 # both of these options make our .rev_db file very, very important
3624 # and we can't afford to lose it because rebuild() won't work
3625 if ($self->use_svm_props || $self->no_metadata) {
3626 $sync = 1;
3627 copy($db, $db_lock) or die "rev_map_set(@_): ",
3628 "Failed to copy: ",
3629 "$db => $db_lock ($!)\n";
3630 } else {
3631 rename $db, $db_lock or die "rev_map_set(@_): ",
3632 "Failed to rename: ",
3633 "$db => $db_lock ($!)\n";
3634 }
3635
3636 sysopen(my $fh, $db_lock, O_RDWR | O_CREAT)
3637 or croak "Couldn't open $db_lock: $!\n";
3638 $update_ref eq 'reset' ? _rev_map_reset($fh, $rev, $commit) :
3639 _rev_map_set($fh, $rev, $commit);
3640 if ($sync) {
3641 $fh->flush or die "Couldn't flush $db_lock: $!\n";
3642 $fh->sync or die "Couldn't sync $db_lock: $!\n";
3643 }
3644 close $fh or croak $!;
3645 if ($update_ref) {
3646 $_head = $self;
3647 my $note = "";
3648 $note = " ($update_ref)" if ($update_ref !~ /^\d*$/);
3649 command_noisy('update-ref', '-m', "r$rev$note",
3650 $self->refname, $commit);
3651 }
3652 rename $db_lock, $db or die "rev_map_set(@_): ", "Failed to rename: ",
3653 "$db_lock => $db ($!)\n";
3654 delete $LOCKFILES{$db_lock};
3655 if ($update_ref) {
3656 $SIG{INT} = $SIG{HUP} = $SIG{TERM} = $SIG{ALRM} = $SIG{PIPE} =
3657 $SIG{USR1} = $SIG{USR2} = 'DEFAULT';
3658 kill $sig, $$ if defined $sig;
3659 }
3660 }
3661
3662 # If want_commit, this will return an array of (rev, commit) where
3663 # commit _must_ be a valid commit in the archive.
3664 # Otherwise, it'll return the max revision (whether or not the
3665 # commit is valid or just a 0x40 placeholder).
3666 sub rev_map_max {
3667 my ($self, $want_commit) = @_;
3668 $self->rebuild;
3669 my ($r, $c) = $self->rev_map_max_norebuild($want_commit);
3670 $want_commit ? ($r, $c) : $r;
3671 }
3672
3673 sub rev_map_max_norebuild {
3674 my ($self, $want_commit) = @_;
3675 my $map_path = $self->map_path;
3676 stat $map_path or return $want_commit ? (0, undef) : 0;
3677 sysopen(my $fh, $map_path, O_RDONLY) or croak "open: $!";
3678 binmode $fh or croak "binmode: $!";
3679 my $size = (stat($fh))[7];
3680 ($size % 24) == 0 or croak "inconsistent size: $size";
3681
3682 if ($size == 0) {
3683 close $fh or croak "close: $!";
3684 return $want_commit ? (0, undef) : 0;
3685 }
3686
3687 sysseek($fh, -24, SEEK_END) or croak "seek: $!";
3688 sysread($fh, my $buf, 24) == 24 or croak "read: $!";
3689 my ($r, $c) = unpack(rev_map_fmt, $buf);
3690 if ($want_commit && $c eq ('0' x40)) {
3691 if ($size < 48) {
3692 return $want_commit ? (0, undef) : 0;
3693 }
3694 sysseek($fh, -48, SEEK_END) or croak "seek: $!";
3695 sysread($fh, $buf, 24) == 24 or croak "read: $!";
3696 ($r, $c) = unpack(rev_map_fmt, $buf);
3697 if ($c eq ('0'x40)) {
3698 croak "Penultimate record is all-zeroes in $map_path";
3699 }
3700 }
3701 close $fh or croak "close: $!";
3702 $want_commit ? ($r, $c) : $r;
3703 }
3704
3705 sub rev_map_get {
3706 my ($self, $rev, $uuid) = @_;
3707 my $map_path = $self->map_path($uuid);
3708 return undef unless -e $map_path;
3709
3710 sysopen(my $fh, $map_path, O_RDONLY) or croak "open: $!";
3711 my $c = _rev_map_get($fh, $rev);
3712 close($fh) or croak "close: $!";
3713 $c
3714 }
3715
3716 sub _rev_map_get {
3717 my ($fh, $rev) = @_;
3718
3719 binmode $fh or croak "binmode: $!";
3720 my $size = (stat($fh))[7];
3721 ($size % 24) == 0 or croak "inconsistent size: $size";
3722
3723 if ($size == 0) {
3724 return undef;
3725 }
3726
3727 my ($l, $u) = (0, $size - 24);
3728 my ($r, $c, $buf);
3729
3730 while ($l <= $u) {
3731 my $i = int(($l/24 + $u/24) / 2) * 24;
3732 sysseek($fh, $i, SEEK_SET) or croak "seek: $!";
3733 sysread($fh, my $buf, 24) == 24 or croak "read: $!";
3734 my ($r, $c) = unpack(rev_map_fmt, $buf);
3735
3736 if ($r < $rev) {
3737 $l = $i + 24;
3738 } elsif ($r > $rev) {
3739 $u = $i - 24;
3740 } else { # $r == $rev
3741 return $c eq ('0' x 40) ? undef : $c;
3742 }
3743 }
3744 undef;
3745 }
3746
3747 # Finds the first svn revision that exists on (if $eq_ok is true) or
3748 # before $rev for the current branch. It will not search any lower
3749 # than $min_rev. Returns the git commit hash and svn revision number
3750 # if found, else (undef, undef).
3751 sub find_rev_before {
3752 my ($self, $rev, $eq_ok, $min_rev) = @_;
3753 --$rev unless $eq_ok;
3754 $min_rev ||= 1;
3755 my $max_rev = $self->rev_map_max;
3756 $rev = $max_rev if ($rev > $max_rev);
3757 while ($rev >= $min_rev) {
3758 if (my $c = $self->rev_map_get($rev)) {
3759 return ($rev, $c);
3760 }
3761 --$rev;
3762 }
3763 return (undef, undef);
3764 }
3765
3766 # Finds the first svn revision that exists on (if $eq_ok is true) or
3767 # after $rev for the current branch. It will not search any higher
3768 # than $max_rev. Returns the git commit hash and svn revision number
3769 # if found, else (undef, undef).
3770 sub find_rev_after {
3771 my ($self, $rev, $eq_ok, $max_rev) = @_;
3772 ++$rev unless $eq_ok;
3773 $max_rev ||= $self->rev_map_max;
3774 while ($rev <= $max_rev) {
3775 if (my $c = $self->rev_map_get($rev)) {
3776 return ($rev, $c);
3777 }
3778 ++$rev;
3779 }
3780 return (undef, undef);
3781 }
3782
3783 sub _new {
3784 my ($class, $repo_id, $ref_id, $path) = @_;
3785 unless (defined $repo_id && length $repo_id) {
3786 $repo_id = $Git::SVN::default_repo_id;
3787 }
3788 unless (defined $ref_id && length $ref_id) {
3789 $_prefix = '' unless defined($_prefix);
3790 $_[2] = $ref_id =
3791 "refs/remotes/$_prefix$Git::SVN::default_ref_id";
3792 }
3793 $_[1] = $repo_id;
3794 my $dir = "$ENV{GIT_DIR}/svn/$ref_id";
3795
3796 # Older repos imported by us used $GIT_DIR/svn/foo instead of
3797 # $GIT_DIR/svn/refs/remotes/foo when tracking refs/remotes/foo
3798 if ($ref_id =~ m{^refs/remotes/(.*)}) {
3799 my $old_dir = "$ENV{GIT_DIR}/svn/$1";
3800 if (-d $old_dir && ! -d $dir) {
3801 $dir = $old_dir;
3802 }
3803 }
3804
3805 $_[3] = $path = '' unless (defined $path);
3806 mkpath([$dir]);
3807 bless {
3808 ref_id => $ref_id, dir => $dir, index => "$dir/index",
3809 path => $path, config => "$ENV{GIT_DIR}/svn/config",
3810 map_root => "$dir/.rev_map", repo_id => $repo_id }, $class;
3811 }
3812
3813 # for read-only access of old .rev_db formats
3814 sub unlink_rev_db_symlink {
3815 my ($self) = @_;
3816 my $link = $self->rev_db_path;
3817 $link =~ s/\.[\w-]+$// or croak "missing UUID at the end of $link";
3818 if (-l $link) {
3819 unlink $link or croak "unlink: $link failed!";
3820 }
3821 }
3822
3823 sub rev_db_path {
3824 my ($self, $uuid) = @_;
3825 my $db_path = $self->map_path($uuid);
3826 $db_path =~ s{/\.rev_map\.}{/\.rev_db\.}
3827 or croak "map_path: $db_path does not contain '/.rev_map.' !";
3828 $db_path;
3829 }
3830
3831 # the new replacement for .rev_db
3832 sub map_path {
3833 my ($self, $uuid) = @_;
3834 $uuid ||= $self->ra_uuid;
3835 "$self->{map_root}.$uuid";
3836 }
3837
3838 sub uri_encode {
3839 my ($f) = @_;
3840 $f =~ s#([^a-zA-Z0-9\*!\:_\./\-])#uc sprintf("%%%02x",ord($1))#eg;
3841 $f
3842 }
3843
3844 sub uri_decode {
3845 my ($f) = @_;
3846 $f =~ s#%([0-9a-fA-F]{2})#chr(hex($1))#eg;
3847 $f
3848 }
3849
3850 sub remove_username {
3851 $_[0] =~ s{^([^:]*://)[^@]+@}{$1};
3852 }
3853
3854 package Git::SVN::Prompt;
3855 use strict;
3856 use warnings;
3857 require SVN::Core;
3858 use vars qw/$_no_auth_cache $_username/;
3859
3860 sub simple {
3861 my ($cred, $realm, $default_username, $may_save, $pool) = @_;
3862 $may_save = undef if $_no_auth_cache;
3863 $default_username = $_username if defined $_username;
3864 if (defined $default_username && length $default_username) {
3865 if (defined $realm && length $realm) {
3866 print STDERR "Authentication realm: $realm\n";
3867 STDERR->flush;
3868 }
3869 $cred->username($default_username);
3870 } else {
3871 username($cred, $realm, $may_save, $pool);
3872 }
3873 $cred->password(_read_password("Password for '" .
3874 $cred->username . "': ", $realm));
3875 $cred->may_save($may_save);
3876 $SVN::_Core::SVN_NO_ERROR;
3877 }
3878
3879 sub ssl_server_trust {
3880 my ($cred, $realm, $failures, $cert_info, $may_save, $pool) = @_;
3881 $may_save = undef if $_no_auth_cache;
3882 print STDERR "Error validating server certificate for '$realm':\n";
3883 {
3884 no warnings 'once';
3885 # All variables SVN::Auth::SSL::* are used only once,
3886 # so we're shutting up Perl warnings about this.
3887 if ($failures & $SVN::Auth::SSL::UNKNOWNCA) {
3888 print STDERR " - The certificate is not issued ",
3889 "by a trusted authority. Use the\n",
3890 " fingerprint to validate ",
3891 "the certificate manually!\n";
3892 }
3893 if ($failures & $SVN::Auth::SSL::CNMISMATCH) {
3894 print STDERR " - The certificate hostname ",
3895 "does not match.\n";
3896 }
3897 if ($failures & $SVN::Auth::SSL::NOTYETVALID) {
3898 print STDERR " - The certificate is not yet valid.\n";
3899 }
3900 if ($failures & $SVN::Auth::SSL::EXPIRED) {
3901 print STDERR " - The certificate has expired.\n";
3902 }
3903 if ($failures & $SVN::Auth::SSL::OTHER) {
3904 print STDERR " - The certificate has ",
3905 "an unknown error.\n";
3906 }
3907 } # no warnings 'once'
3908 printf STDERR
3909 "Certificate information:\n".
3910 " - Hostname: %s\n".
3911 " - Valid: from %s until %s\n".
3912 " - Issuer: %s\n".
3913 " - Fingerprint: %s\n",
3914 map $cert_info->$_, qw(hostname valid_from valid_until
3915 issuer_dname fingerprint);
3916 my $choice;
3917 prompt:
3918 print STDERR $may_save ?
3919 "(R)eject, accept (t)emporarily or accept (p)ermanently? " :
3920 "(R)eject or accept (t)emporarily? ";
3921 STDERR->flush;
3922 $choice = lc(substr(<STDIN> || 'R', 0, 1));
3923 if ($choice =~ /^t$/i) {
3924 $cred->may_save(undef);
3925 } elsif ($choice =~ /^r$/i) {
3926 return -1;
3927 } elsif ($may_save && $choice =~ /^p$/i) {
3928 $cred->may_save($may_save);
3929 } else {
3930 goto prompt;
3931 }
3932 $cred->accepted_failures($failures);
3933 $SVN::_Core::SVN_NO_ERROR;
3934 }
3935
3936 sub ssl_client_cert {
3937 my ($cred, $realm, $may_save, $pool) = @_;
3938 $may_save = undef if $_no_auth_cache;
3939 print STDERR "Client certificate filename: ";
3940 STDERR->flush;
3941 chomp(my $filename = <STDIN>);
3942 $cred->cert_file($filename);
3943 $cred->may_save($may_save);
3944 $SVN::_Core::SVN_NO_ERROR;
3945 }
3946
3947 sub ssl_client_cert_pw {
3948 my ($cred, $realm, $may_save, $pool) = @_;
3949 $may_save = undef if $_no_auth_cache;
3950 $cred->password(_read_password("Password: ", $realm));
3951 $cred->may_save($may_save);
3952 $SVN::_Core::SVN_NO_ERROR;
3953 }
3954
3955 sub username {
3956 my ($cred, $realm, $may_save, $pool) = @_;
3957 $may_save = undef if $_no_auth_cache;
3958 if (defined $realm && length $realm) {
3959 print STDERR "Authentication realm: $realm\n";
3960 }
3961 my $username;
3962 if (defined $_username) {
3963 $username = $_username;
3964 } else {
3965 print STDERR "Username: ";
3966 STDERR->flush;
3967 chomp($username = <STDIN>);
3968 }
3969 $cred->username($username);
3970 $cred->may_save($may_save);
3971 $SVN::_Core::SVN_NO_ERROR;
3972 }
3973
3974 sub _read_password {
3975 my ($prompt, $realm) = @_;
3976 my $password = '';
3977 if (exists $ENV{GIT_ASKPASS}) {
3978 open(PH, "-|", $ENV{GIT_ASKPASS}, $prompt);
3979 $password = <PH>;
3980 $password =~ s/[\012\015]//; # \n\r
3981 close(PH);
3982 } else {
3983 print STDERR $prompt;
3984 STDERR->flush;
3985 require Term::ReadKey;
3986 Term::ReadKey::ReadMode('noecho');
3987 while (defined(my $key = Term::ReadKey::ReadKey(0))) {
3988 last if $key =~ /[\012\015]/; # \n\r
3989 $password .= $key;
3990 }
3991 Term::ReadKey::ReadMode('restore');
3992 print STDERR "\n";
3993 STDERR->flush;
3994 }
3995 $password;
3996 }
3997
3998 package SVN::Git::Fetcher;
3999 use vars qw/@ISA/;
4000 use strict;
4001 use warnings;
4002 use Carp qw/croak/;
4003 use File::Temp qw/tempfile/;
4004 use IO::File qw//;
4005 use vars qw/$_ignore_regex/;
4006
4007 # file baton members: path, mode_a, mode_b, pool, fh, blob, base
4008 sub new {
4009 my ($class, $git_svn, $switch_path) = @_;
4010 my $self = SVN::Delta::Editor->new;
4011 bless $self, $class;
4012 if (exists $git_svn->{last_commit}) {
4013 $self->{c} = $git_svn->{last_commit};
4014 $self->{empty_symlinks} =
4015 _mark_empty_symlinks($git_svn, $switch_path);
4016 }
4017 $self->{ignore_regex} = eval { command_oneline('config', '--get',
4018 "svn-remote.$git_svn->{repo_id}.ignore-paths") };
4019 $self->{empty} = {};
4020 $self->{dir_prop} = {};
4021 $self->{file_prop} = {};
4022 $self->{absent_dir} = {};
4023 $self->{absent_file} = {};
4024 $self->{gii} = $git_svn->tmp_index_do(sub { Git::IndexInfo->new });
4025 $self;
4026 }
4027
4028 # this uses the Ra object, so it must be called before do_{switch,update},
4029 # not inside them (when the Git::SVN::Fetcher object is passed) to
4030 # do_{switch,update}
4031 sub _mark_empty_symlinks {
4032 my ($git_svn, $switch_path) = @_;
4033 my $bool = Git::config_bool('svn.brokenSymlinkWorkaround');
4034 return {} if (!defined($bool)) || (defined($bool) && ! $bool);
4035
4036 my %ret;
4037 my ($rev, $cmt) = $git_svn->last_rev_commit;
4038 return {} unless ($rev && $cmt);
4039
4040 # allow the warning to be printed for each revision we fetch to
4041 # ensure the user sees it. The user can also disable the workaround
4042 # on the repository even while git svn is running and the next
4043 # revision fetched will skip this expensive function.
4044 my $printed_warning;
4045 chomp(my $empty_blob = `git hash-object -t blob --stdin < /dev/null`);
4046 my ($ls, $ctx) = command_output_pipe(qw/ls-tree -r -z/, $cmt);
4047 local $/ = "\0";
4048 my $pfx = defined($switch_path) ? $switch_path : $git_svn->{path};
4049 $pfx .= '/' if length($pfx);
4050 while (<$ls>) {
4051 chomp;
4052 s/\A100644 blob $empty_blob\t//o or next;
4053 unless ($printed_warning) {
4054 print STDERR "Scanning for empty symlinks, ",
4055 "this may take a while if you have ",
4056 "many empty files\n",
4057 "You may disable this with `",
4058 "git config svn.brokenSymlinkWorkaround ",
4059 "false'.\n",
4060 "This may be done in a different ",
4061 "terminal without restarting ",
4062 "git svn\n";
4063 $printed_warning = 1;
4064 }
4065 my $path = $_;
4066 my (undef, $props) =
4067 $git_svn->ra->get_file($pfx.$path, $rev, undef);
4068 if ($props->{'svn:special'}) {
4069 $ret{$path} = 1;
4070 }
4071 }
4072 command_close_pipe($ls, $ctx);
4073 \%ret;
4074 }
4075
4076 # returns true if a given path is inside a ".git" directory
4077 sub in_dot_git {
4078 $_[0] =~ m{(?:^|/)\.git(?:/|$)};
4079 }
4080
4081 # return value: 0 -- don't ignore, 1 -- ignore
4082 sub is_path_ignored {
4083 my ($self, $path) = @_;
4084 return 1 if in_dot_git($path);
4085 return 1 if defined($self->{ignore_regex}) &&
4086 $path =~ m!$self->{ignore_regex}!;
4087 return 0 unless defined($_ignore_regex);
4088 return 1 if $path =~ m!$_ignore_regex!o;
4089 return 0;
4090 }
4091
4092 sub set_path_strip {
4093 my ($self, $path) = @_;
4094 $self->{path_strip} = qr/^\Q$path\E(\/|$)/ if length $path;
4095 }
4096
4097 sub open_root {
4098 { path => '' };
4099 }
4100
4101 sub open_directory {
4102 my ($self, $path, $pb, $rev) = @_;
4103 { path => $path };
4104 }
4105
4106 sub git_path {
4107 my ($self, $path) = @_;
4108 if ($self->{path_strip}) {
4109 $path =~ s!$self->{path_strip}!! or
4110 die "Failed to strip path '$path' ($self->{path_strip})\n";
4111 }
4112 $path;
4113 }
4114
4115 sub delete_entry {
4116 my ($self, $path, $rev, $pb) = @_;
4117 return undef if $self->is_path_ignored($path);
4118
4119 my $gpath = $self->git_path($path);
4120 return undef if ($gpath eq '');
4121
4122 # remove entire directories.
4123 my ($tree) = (command('ls-tree', '-z', $self->{c}, "./$gpath")
4124 =~ /\A040000 tree ([a-f\d]{40})\t\Q$gpath\E\0/);
4125 if ($tree) {
4126 my ($ls, $ctx) = command_output_pipe(qw/ls-tree
4127 -r --name-only -z/,
4128 $tree);
4129 local $/ = "\0";
4130 while (<$ls>) {
4131 chomp;
4132 my $rmpath = "$gpath/$_";
4133 $self->{gii}->remove($rmpath);
4134 print "\tD\t$rmpath\n" unless $::_q;
4135 }
4136 print "\tD\t$gpath/\n" unless $::_q;
4137 command_close_pipe($ls, $ctx);
4138 } else {
4139 $self->{gii}->remove($gpath);
4140 print "\tD\t$gpath\n" unless $::_q;
4141 }
4142 $self->{empty}->{$path} = 0;
4143 undef;
4144 }
4145
4146 sub open_file {
4147 my ($self, $path, $pb, $rev) = @_;
4148 my ($mode, $blob);
4149
4150 goto out if $self->is_path_ignored($path);
4151
4152 my $gpath = $self->git_path($path);
4153 ($mode, $blob) = (command('ls-tree', '-z', $self->{c}, "./$gpath")
4154 =~ /\A(\d{6}) blob ([a-f\d]{40})\t\Q$gpath\E\0/);
4155 unless (defined $mode && defined $blob) {
4156 die "$path was not found in commit $self->{c} (r$rev)\n";
4157 }
4158 if ($mode eq '100644' && $self->{empty_symlinks}->{$path}) {
4159 $mode = '120000';
4160 }
4161 out:
4162 { path => $path, mode_a => $mode, mode_b => $mode, blob => $blob,
4163 pool => SVN::Pool->new, action => 'M' };
4164 }
4165
4166 sub add_file {
4167 my ($self, $path, $pb, $cp_path, $cp_rev) = @_;
4168 my $mode;
4169
4170 if (!$self->is_path_ignored($path)) {
4171 my ($dir, $file) = ($path =~ m#^(.*?)/?([^/]+)$#);
4172 delete $self->{empty}->{$dir};
4173 $mode = '100644';
4174 }
4175 { path => $path, mode_a => $mode, mode_b => $mode,
4176 pool => SVN::Pool->new, action => 'A' };
4177 }
4178
4179 sub add_directory {
4180 my ($self, $path, $cp_path, $cp_rev) = @_;
4181 goto out if $self->is_path_ignored($path);
4182 my $gpath = $self->git_path($path);
4183 if ($gpath eq '') {
4184 my ($ls, $ctx) = command_output_pipe(qw/ls-tree
4185 -r --name-only -z/,
4186 $self->{c});
4187 local $/ = "\0";
4188 while (<$ls>) {
4189 chomp;
4190 $self->{gii}->remove($_);
4191 print "\tD\t$_\n" unless $::_q;
4192 }
4193 command_close_pipe($ls, $ctx);
4194 $self->{empty}->{$path} = 0;
4195 }
4196 my ($dir, $file) = ($path =~ m#^(.*?)/?([^/]+)$#);
4197 delete $self->{empty}->{$dir};
4198 $self->{empty}->{$path} = 1;
4199 out:
4200 { path => $path };
4201 }
4202
4203 sub change_dir_prop {
4204 my ($self, $db, $prop, $value) = @_;
4205 return undef if $self->is_path_ignored($db->{path});
4206 $self->{dir_prop}->{$db->{path}} ||= {};
4207 $self->{dir_prop}->{$db->{path}}->{$prop} = $value;
4208 undef;
4209 }
4210
4211 sub absent_directory {
4212 my ($self, $path, $pb) = @_;
4213 return undef if $self->is_path_ignored($path);
4214 $self->{absent_dir}->{$pb->{path}} ||= [];
4215 push @{$self->{absent_dir}->{$pb->{path}}}, $path;
4216 undef;
4217 }
4218
4219 sub absent_file {
4220 my ($self, $path, $pb) = @_;
4221 return undef if $self->is_path_ignored($path);
4222 $self->{absent_file}->{$pb->{path}} ||= [];
4223 push @{$self->{absent_file}->{$pb->{path}}}, $path;
4224 undef;
4225 }
4226
4227 sub change_file_prop {
4228 my ($self, $fb, $prop, $value) = @_;
4229 return undef if $self->is_path_ignored($fb->{path});
4230 if ($prop eq 'svn:executable') {
4231 if ($fb->{mode_b} != 120000) {
4232 $fb->{mode_b} = defined $value ? 100755 : 100644;
4233 }
4234 } elsif ($prop eq 'svn:special') {
4235 $fb->{mode_b} = defined $value ? 120000 : 100644;
4236 } else {
4237 $self->{file_prop}->{$fb->{path}} ||= {};
4238 $self->{file_prop}->{$fb->{path}}->{$prop} = $value;
4239 }
4240 undef;
4241 }
4242
4243 sub apply_textdelta {
4244 my ($self, $fb, $exp) = @_;
4245 return undef if $self->is_path_ignored($fb->{path});
4246 my $fh = $::_repository->temp_acquire('svn_delta');
4247 # $fh gets auto-closed() by SVN::TxDelta::apply(),
4248 # (but $base does not,) so dup() it for reading in close_file
4249 open my $dup, '<&', $fh or croak $!;
4250 my $base = $::_repository->temp_acquire('git_blob');
4251
4252 if ($fb->{blob}) {
4253 my ($base_is_link, $size);
4254
4255 if ($fb->{mode_a} eq '120000' &&
4256 ! $self->{empty_symlinks}->{$fb->{path}}) {
4257 print $base 'link ' or die "print $!\n";
4258 $base_is_link = 1;
4259 }
4260 retry:
4261 $size = $::_repository->cat_blob($fb->{blob}, $base);
4262 die "Failed to read object $fb->{blob}" if ($size < 0);
4263
4264 if (defined $exp) {
4265 seek $base, 0, 0 or croak $!;
4266 my $got = ::md5sum($base);
4267 if ($got ne $exp) {
4268 my $err = "Checksum mismatch: ".
4269 "$fb->{path} $fb->{blob}\n" .
4270 "expected: $exp\n" .
4271 " got: $got\n";
4272 if ($base_is_link) {
4273 warn $err,
4274 "Retrying... (possibly ",
4275 "a bad symlink from SVN)\n";
4276 $::_repository->temp_reset($base);
4277 $base_is_link = 0;
4278 goto retry;
4279 }
4280 die $err;
4281 }
4282 }
4283 }
4284 seek $base, 0, 0 or croak $!;
4285 $fb->{fh} = $fh;
4286 $fb->{base} = $base;
4287 [ SVN::TxDelta::apply($base, $dup, undef, $fb->{path}, $fb->{pool}) ];
4288 }
4289
4290 sub close_file {
4291 my ($self, $fb, $exp) = @_;
4292 return undef if $self->is_path_ignored($fb->{path});
4293
4294 my $hash;
4295 my $path = $self->git_path($fb->{path});
4296 if (my $fh = $fb->{fh}) {
4297 if (defined $exp) {
4298 seek($fh, 0, 0) or croak $!;
4299 my $got = ::md5sum($fh);
4300 if ($got ne $exp) {
4301 die "Checksum mismatch: $path\n",
4302 "expected: $exp\n got: $got\n";
4303 }
4304 }
4305 if ($fb->{mode_b} == 120000) {
4306 sysseek($fh, 0, 0) or croak $!;
4307 my $rd = sysread($fh, my $buf, 5);
4308
4309 if (!defined $rd) {
4310 croak "sysread: $!\n";
4311 } elsif ($rd == 0) {
4312 warn "$path has mode 120000",
4313 " but it points to nothing\n",
4314 "converting to an empty file with mode",
4315 " 100644\n";
4316 $fb->{mode_b} = '100644';
4317 } elsif ($buf ne 'link ') {
4318 warn "$path has mode 120000",
4319 " but is not a link\n";
4320 } else {
4321 my $tmp_fh = $::_repository->temp_acquire(
4322 'svn_hash');
4323 my $res;
4324 while ($res = sysread($fh, my $str, 1024)) {
4325 my $out = syswrite($tmp_fh, $str, $res);
4326 defined($out) && $out == $res
4327 or croak("write ",
4328 Git::temp_path($tmp_fh),
4329 ": $!\n");
4330 }
4331 defined $res or croak $!;
4332
4333 ($fh, $tmp_fh) = ($tmp_fh, $fh);
4334 Git::temp_release($tmp_fh, 1);
4335 }
4336 }
4337
4338 $hash = $::_repository->hash_and_insert_object(
4339 Git::temp_path($fh));
4340 $hash =~ /^[a-f\d]{40}$/ or die "not a sha1: $hash\n";
4341
4342 Git::temp_release($fb->{base}, 1);
4343 Git::temp_release($fh, 1);
4344 } else {
4345 $hash = $fb->{blob} or die "no blob information\n";
4346 }
4347 $fb->{pool}->clear;
4348 $self->{gii}->update($fb->{mode_b}, $hash, $path) or croak $!;
4349 print "\t$fb->{action}\t$path\n" if $fb->{action} && ! $::_q;
4350 undef;
4351 }
4352
4353 sub abort_edit {
4354 my $self = shift;
4355 $self->{nr} = $self->{gii}->{nr};
4356 delete $self->{gii};
4357 $self->SUPER::abort_edit(@_);
4358 }
4359
4360 sub close_edit {
4361 my $self = shift;
4362 $self->{git_commit_ok} = 1;
4363 $self->{nr} = $self->{gii}->{nr};
4364 delete $self->{gii};
4365 $self->SUPER::close_edit(@_);
4366 }
4367
4368 package SVN::Git::Editor;
4369 use vars qw/@ISA $_rmdir $_cp_similarity $_find_copies_harder $_rename_limit/;
4370 use strict;
4371 use warnings;
4372 use Carp qw/croak/;
4373 use IO::File;
4374
4375 sub new {
4376 my ($class, $opts) = @_;
4377 foreach (qw/svn_path r ra tree_a tree_b log editor_cb/) {
4378 die "$_ required!\n" unless (defined $opts->{$_});
4379 }
4380
4381 my $pool = SVN::Pool->new;
4382 my $mods = generate_diff($opts->{tree_a}, $opts->{tree_b});
4383 my $types = check_diff_paths($opts->{ra}, $opts->{svn_path},
4384 $opts->{r}, $mods);
4385
4386 # $opts->{ra} functions should not be used after this:
4387 my @ce = $opts->{ra}->get_commit_editor($opts->{log},
4388 $opts->{editor_cb}, $pool);
4389 my $self = SVN::Delta::Editor->new(@ce, $pool);
4390 bless $self, $class;
4391 foreach (qw/svn_path r tree_a tree_b/) {
4392 $self->{$_} = $opts->{$_};
4393 }
4394 $self->{url} = $opts->{ra}->{url};
4395 $self->{mods} = $mods;
4396 $self->{types} = $types;
4397 $self->{pool} = $pool;
4398 $self->{bat} = { '' => $self->open_root($self->{r}, $self->{pool}) };
4399 $self->{rm} = { };
4400 $self->{path_prefix} = length $self->{svn_path} ?
4401 "$self->{svn_path}/" : '';
4402 $self->{config} = $opts->{config};
4403 return $self;
4404 }
4405
4406 sub generate_diff {
4407 my ($tree_a, $tree_b) = @_;
4408 my @diff_tree = qw(diff-tree -z -r);
4409 if ($_cp_similarity) {
4410 push @diff_tree, "-C$_cp_similarity";
4411 } else {
4412 push @diff_tree, '-C';
4413 }
4414 push @diff_tree, '--find-copies-harder' if $_find_copies_harder;
4415 push @diff_tree, "-l$_rename_limit" if defined $_rename_limit;
4416 push @diff_tree, $tree_a, $tree_b;
4417 my ($diff_fh, $ctx) = command_output_pipe(@diff_tree);
4418 local $/ = "\0";
4419 my $state = 'meta';
4420 my @mods;
4421 while (<$diff_fh>) {
4422 chomp $_; # this gets rid of the trailing "\0"
4423 if ($state eq 'meta' && /^:(\d{6})\s(\d{6})\s
4424 ($::sha1)\s($::sha1)\s
4425 ([MTCRAD])\d*$/xo) {
4426 push @mods, { mode_a => $1, mode_b => $2,
4427 sha1_a => $3, sha1_b => $4,
4428 chg => $5 };
4429 if ($5 =~ /^(?:C|R)$/) {
4430 $state = 'file_a';
4431 } else {
4432 $state = 'file_b';
4433 }
4434 } elsif ($state eq 'file_a') {
4435 my $x = $mods[$#mods] or croak "Empty array\n";
4436 if ($x->{chg} !~ /^(?:C|R)$/) {
4437 croak "Error parsing $_, $x->{chg}\n";
4438 }
4439 $x->{file_a} = $_;
4440 $state = 'file_b';
4441 } elsif ($state eq 'file_b') {
4442 my $x = $mods[$#mods] or croak "Empty array\n";
4443 if (exists $x->{file_a} && $x->{chg} !~ /^(?:C|R)$/) {
4444 croak "Error parsing $_, $x->{chg}\n";
4445 }
4446 if (!exists $x->{file_a} && $x->{chg} =~ /^(?:C|R)$/) {
4447 croak "Error parsing $_, $x->{chg}\n";
4448 }
4449 $x->{file_b} = $_;
4450 $state = 'meta';
4451 } else {
4452 croak "Error parsing $_\n";
4453 }
4454 }
4455 command_close_pipe($diff_fh, $ctx);
4456 \@mods;
4457 }
4458
4459 sub check_diff_paths {
4460 my ($ra, $pfx, $rev, $mods) = @_;
4461 my %types;
4462 $pfx .= '/' if length $pfx;
4463
4464 sub type_diff_paths {
4465 my ($ra, $types, $path, $rev) = @_;
4466 my @p = split m#/+#, $path;
4467 my $c = shift @p;
4468 unless (defined $types->{$c}) {
4469 $types->{$c} = $ra->check_path($c, $rev);
4470 }
4471 while (@p) {
4472 $c .= '/' . shift @p;
4473 next if defined $types->{$c};
4474 $types->{$c} = $ra->check_path($c, $rev);
4475 }
4476 }
4477
4478 foreach my $m (@$mods) {
4479 foreach my $f (qw/file_a file_b/) {
4480 next unless defined $m->{$f};
4481 my ($dir) = ($m->{$f} =~ m#^(.*?)/?(?:[^/]+)$#);
4482 if (length $pfx.$dir && ! defined $types{$dir}) {
4483 type_diff_paths($ra, \%types, $pfx.$dir, $rev);
4484 }
4485 }
4486 }
4487 \%types;
4488 }
4489
4490 sub split_path {
4491 return ($_[0] =~ m#^(.*?)/?([^/]+)$#);
4492 }
4493
4494 sub repo_path {
4495 my ($self, $path) = @_;
4496 $self->{path_prefix}.(defined $path ? $path : '');
4497 }
4498
4499 sub url_path {
4500 my ($self, $path) = @_;
4501 if ($self->{url} =~ m#^https?://#) {
4502 $path =~ s!([^~a-zA-Z0-9_./-])!uc sprintf("%%%02x",ord($1))!eg;
4503 }
4504 $self->{url} . '/' . $self->repo_path($path);
4505 }
4506
4507 sub rmdirs {
4508 my ($self) = @_;
4509 my $rm = $self->{rm};
4510 delete $rm->{''}; # we never delete the url we're tracking
4511 return unless %$rm;
4512
4513 foreach (keys %$rm) {
4514 my @d = split m#/#, $_;
4515 my $c = shift @d;
4516 $rm->{$c} = 1;
4517 while (@d) {
4518 $c .= '/' . shift @d;
4519 $rm->{$c} = 1;
4520 }
4521 }
4522 delete $rm->{$self->{svn_path}};
4523 delete $rm->{''}; # we never delete the url we're tracking
4524 return unless %$rm;
4525
4526 my ($fh, $ctx) = command_output_pipe(qw/ls-tree --name-only -r -z/,
4527 $self->{tree_b});
4528 local $/ = "\0";
4529 while (<$fh>) {
4530 chomp;
4531 my @dn = split m#/#, $_;
4532 while (pop @dn) {
4533 delete $rm->{join '/', @dn};
4534 }
4535 unless (%$rm) {
4536 close $fh;
4537 return;
4538 }
4539 }
4540 command_close_pipe($fh, $ctx);
4541
4542 my ($r, $p, $bat) = ($self->{r}, $self->{pool}, $self->{bat});
4543 foreach my $d (sort { $b =~ tr#/#/# <=> $a =~ tr#/#/# } keys %$rm) {
4544 $self->close_directory($bat->{$d}, $p);
4545 my ($dn) = ($d =~ m#^(.*?)/?(?:[^/]+)$#);
4546 print "\tD+\t$d/\n" unless $::_q;
4547 $self->SUPER::delete_entry($d, $r, $bat->{$dn}, $p);
4548 delete $bat->{$d};
4549 }
4550 }
4551
4552 sub open_or_add_dir {
4553 my ($self, $full_path, $baton) = @_;
4554 my $t = $self->{types}->{$full_path};
4555 if (!defined $t) {
4556 die "$full_path not known in r$self->{r} or we have a bug!\n";
4557 }
4558 {
4559 no warnings 'once';
4560 # SVN::Node::none and SVN::Node::file are used only once,
4561 # so we're shutting up Perl's warnings about them.
4562 if ($t == $SVN::Node::none) {
4563 return $self->add_directory($full_path, $baton,
4564 undef, -1, $self->{pool});
4565 } elsif ($t == $SVN::Node::dir) {
4566 return $self->open_directory($full_path, $baton,
4567 $self->{r}, $self->{pool});
4568 } # no warnings 'once'
4569 print STDERR "$full_path already exists in repository at ",
4570 "r$self->{r} and it is not a directory (",
4571 ($t == $SVN::Node::file ? 'file' : 'unknown'),"/$t)\n";
4572 } # no warnings 'once'
4573 exit 1;
4574 }
4575
4576 sub ensure_path {
4577 my ($self, $path) = @_;
4578 my $bat = $self->{bat};
4579 my $repo_path = $self->repo_path($path);
4580 return $bat->{''} unless (length $repo_path);
4581 my @p = split m#/+#, $repo_path;
4582 my $c = shift @p;
4583 $bat->{$c} ||= $self->open_or_add_dir($c, $bat->{''});
4584 while (@p) {
4585 my $c0 = $c;
4586 $c .= '/' . shift @p;
4587 $bat->{$c} ||= $self->open_or_add_dir($c, $bat->{$c0});
4588 }
4589 return $bat->{$c};
4590 }
4591
4592 # Subroutine to convert a globbing pattern to a regular expression.
4593 # From perl cookbook.
4594 sub glob2pat {
4595 my $globstr = shift;
4596 my %patmap = ('*' => '.*', '?' => '.', '[' => '[', ']' => ']');
4597 $globstr =~ s{(.)} { $patmap{$1} || "\Q$1" }ge;
4598 return '^' . $globstr . '$';
4599 }
4600
4601 sub check_autoprop {
4602 my ($self, $pattern, $properties, $file, $fbat) = @_;
4603 # Convert the globbing pattern to a regular expression.
4604 my $regex = glob2pat($pattern);
4605 # Check if the pattern matches the file name.
4606 if($file =~ m/($regex)/) {
4607 # Parse the list of properties to set.
4608 my @props = split(/;/, $properties);
4609 foreach my $prop (@props) {
4610 # Parse 'name=value' syntax and set the property.
4611 if ($prop =~ /([^=]+)=(.*)/) {
4612 my ($n,$v) = ($1,$2);
4613 for ($n, $v) {
4614 s/^\s+//; s/\s+$//;
4615 }
4616 $self->change_file_prop($fbat, $n, $v);
4617 }
4618 }
4619 }
4620 }
4621
4622 sub apply_autoprops {
4623 my ($self, $file, $fbat) = @_;
4624 my $conf_t = ${$self->{config}}{'config'};
4625 no warnings 'once';
4626 # Check [miscellany]/enable-auto-props in svn configuration.
4627 if (SVN::_Core::svn_config_get_bool(
4628 $conf_t,
4629 $SVN::_Core::SVN_CONFIG_SECTION_MISCELLANY,
4630 $SVN::_Core::SVN_CONFIG_OPTION_ENABLE_AUTO_PROPS,
4631 0)) {
4632 # Auto-props are enabled. Enumerate them to look for matches.
4633 my $callback = sub {
4634 $self->check_autoprop($_[0], $_[1], $file, $fbat);
4635 };
4636 SVN::_Core::svn_config_enumerate(
4637 $conf_t,
4638 $SVN::_Core::SVN_CONFIG_SECTION_AUTO_PROPS,
4639 $callback);
4640 }
4641 }
4642
4643 sub A {
4644 my ($self, $m) = @_;
4645 my ($dir, $file) = split_path($m->{file_b});
4646 my $pbat = $self->ensure_path($dir);
4647 my $fbat = $self->add_file($self->repo_path($m->{file_b}), $pbat,
4648 undef, -1);
4649 print "\tA\t$m->{file_b}\n" unless $::_q;
4650 $self->apply_autoprops($file, $fbat);
4651 $self->chg_file($fbat, $m);
4652 $self->close_file($fbat,undef,$self->{pool});
4653 }
4654
4655 sub C {
4656 my ($self, $m) = @_;
4657 my ($dir, $file) = split_path($m->{file_b});
4658 my $pbat = $self->ensure_path($dir);
4659 my $fbat = $self->add_file($self->repo_path($m->{file_b}), $pbat,
4660 $self->url_path($m->{file_a}), $self->{r});
4661 print "\tC\t$m->{file_a} => $m->{file_b}\n" unless $::_q;
4662 $self->chg_file($fbat, $m);
4663 $self->close_file($fbat,undef,$self->{pool});
4664 }
4665
4666 sub delete_entry {
4667 my ($self, $path, $pbat) = @_;
4668 my $rpath = $self->repo_path($path);
4669 my ($dir, $file) = split_path($rpath);
4670 $self->{rm}->{$dir} = 1;
4671 $self->SUPER::delete_entry($rpath, $self->{r}, $pbat, $self->{pool});
4672 }
4673
4674 sub R {
4675 my ($self, $m) = @_;
4676 my ($dir, $file) = split_path($m->{file_b});
4677 my $pbat = $self->ensure_path($dir);
4678 my $fbat = $self->add_file($self->repo_path($m->{file_b}), $pbat,
4679 $self->url_path($m->{file_a}), $self->{r});
4680 print "\tR\t$m->{file_a} => $m->{file_b}\n" unless $::_q;
4681 $self->apply_autoprops($file, $fbat);
4682 $self->chg_file($fbat, $m);
4683 $self->close_file($fbat,undef,$self->{pool});
4684
4685 ($dir, $file) = split_path($m->{file_a});
4686 $pbat = $self->ensure_path($dir);
4687 $self->delete_entry($m->{file_a}, $pbat);
4688 }
4689
4690 sub M {
4691 my ($self, $m) = @_;
4692 my ($dir, $file) = split_path($m->{file_b});
4693 my $pbat = $self->ensure_path($dir);
4694 my $fbat = $self->open_file($self->repo_path($m->{file_b}),
4695 $pbat,$self->{r},$self->{pool});
4696 print "\t$m->{chg}\t$m->{file_b}\n" unless $::_q;
4697 $self->chg_file($fbat, $m);
4698 $self->close_file($fbat,undef,$self->{pool});
4699 }
4700
4701 sub T { shift->M(@_) }
4702
4703 sub change_file_prop {
4704 my ($self, $fbat, $pname, $pval) = @_;
4705 $self->SUPER::change_file_prop($fbat, $pname, $pval, $self->{pool});
4706 }
4707
4708 sub _chg_file_get_blob ($$$$) {
4709 my ($self, $fbat, $m, $which) = @_;
4710 my $fh = $::_repository->temp_acquire("git_blob_$which");
4711 if ($m->{"mode_$which"} =~ /^120/) {
4712 print $fh 'link ' or croak $!;
4713 $self->change_file_prop($fbat,'svn:special','*');
4714 } elsif ($m->{mode_a} =~ /^120/ && $m->{"mode_$which"} !~ /^120/) {
4715 $self->change_file_prop($fbat,'svn:special',undef);
4716 }
4717 my $blob = $m->{"sha1_$which"};
4718 return ($fh,) if ($blob =~ /^0{40}$/);
4719 my $size = $::_repository->cat_blob($blob, $fh);
4720 croak "Failed to read object $blob" if ($size < 0);
4721 $fh->flush == 0 or croak $!;
4722 seek $fh, 0, 0 or croak $!;
4723
4724 my $exp = ::md5sum($fh);
4725 seek $fh, 0, 0 or croak $!;
4726 return ($fh, $exp);
4727 }
4728
4729 sub chg_file {
4730 my ($self, $fbat, $m) = @_;
4731 if ($m->{mode_b} =~ /755$/ && $m->{mode_a} !~ /755$/) {
4732 $self->change_file_prop($fbat,'svn:executable','*');
4733 } elsif ($m->{mode_b} !~ /755$/ && $m->{mode_a} =~ /755$/) {
4734 $self->change_file_prop($fbat,'svn:executable',undef);
4735 }
4736 my ($fh_a, $exp_a) = _chg_file_get_blob $self, $fbat, $m, 'a';
4737 my ($fh_b, $exp_b) = _chg_file_get_blob $self, $fbat, $m, 'b';
4738 my $pool = SVN::Pool->new;
4739 my $atd = $self->apply_textdelta($fbat, $exp_a, $pool);
4740 if (-s $fh_a) {
4741 my $txstream = SVN::TxDelta::new ($fh_a, $fh_b, $pool);
4742 my $res = SVN::TxDelta::send_txstream($txstream, @$atd, $pool);
4743 if (defined $res) {
4744 die "Unexpected result from send_txstream: $res\n",
4745 "(SVN::Core::VERSION: $SVN::Core::VERSION)\n";
4746 }
4747 } else {
4748 my $got = SVN::TxDelta::send_stream($fh_b, @$atd, $pool);
4749 die "Checksum mismatch\nexpected: $exp_b\ngot: $got\n"
4750 if ($got ne $exp_b);
4751 }
4752 Git::temp_release($fh_b, 1);
4753 Git::temp_release($fh_a, 1);
4754 $pool->clear;
4755 }
4756
4757 sub D {
4758 my ($self, $m) = @_;
4759 my ($dir, $file) = split_path($m->{file_b});
4760 my $pbat = $self->ensure_path($dir);
4761 print "\tD\t$m->{file_b}\n" unless $::_q;
4762 $self->delete_entry($m->{file_b}, $pbat);
4763 }
4764
4765 sub close_edit {
4766 my ($self) = @_;
4767 my ($p,$bat) = ($self->{pool}, $self->{bat});
4768 foreach (sort { $b =~ tr#/#/# <=> $a =~ tr#/#/# } keys %$bat) {
4769 next if $_ eq '';
4770 $self->close_directory($bat->{$_}, $p);
4771 }
4772 $self->close_directory($bat->{''}, $p);
4773 $self->SUPER::close_edit($p);
4774 $p->clear;
4775 }
4776
4777 sub abort_edit {
4778 my ($self) = @_;
4779 $self->SUPER::abort_edit($self->{pool});
4780 }
4781
4782 sub DESTROY {
4783 my $self = shift;
4784 $self->SUPER::DESTROY(@_);
4785 $self->{pool}->clear;
4786 }
4787
4788 # this drives the editor
4789 sub apply_diff {
4790 my ($self) = @_;
4791 my $mods = $self->{mods};
4792 my %o = ( D => 1, R => 0, C => -1, A => 3, M => 3, T => 3 );
4793 foreach my $m (sort { $o{$a->{chg}} <=> $o{$b->{chg}} } @$mods) {
4794 my $f = $m->{chg};
4795 if (defined $o{$f}) {
4796 $self->$f($m);
4797 } else {
4798 fatal("Invalid change type: $f");
4799 }
4800 }
4801 $self->rmdirs if $_rmdir;
4802 if (@$mods == 0) {
4803 $self->abort_edit;
4804 } else {
4805 $self->close_edit;
4806 }
4807 return scalar @$mods;
4808 }
4809
4810 package Git::SVN::Ra;
4811 use vars qw/@ISA $config_dir $_log_window_size/;
4812 use strict;
4813 use warnings;
4814 my ($ra_invalid, $can_do_switch, %ignored_err, $RA);
4815
4816 BEGIN {
4817 # enforce temporary pool usage for some simple functions
4818 no strict 'refs';
4819 for my $f (qw/rev_proplist get_latest_revnum get_uuid get_repos_root
4820 get_file/) {
4821 my $SUPER = "SUPER::$f";
4822 *$f = sub {
4823 my $self = shift;
4824 my $pool = SVN::Pool->new;
4825 my @ret = $self->$SUPER(@_,$pool);
4826 $pool->clear;
4827 wantarray ? @ret : $ret[0];
4828 };
4829 }
4830 }
4831
4832 sub _auth_providers () {
4833 [
4834 SVN::Client::get_simple_provider(),
4835 SVN::Client::get_ssl_server_trust_file_provider(),
4836 SVN::Client::get_simple_prompt_provider(
4837 \&Git::SVN::Prompt::simple, 2),
4838 SVN::Client::get_ssl_client_cert_file_provider(),
4839 SVN::Client::get_ssl_client_cert_prompt_provider(
4840 \&Git::SVN::Prompt::ssl_client_cert, 2),
4841 SVN::Client::get_ssl_client_cert_pw_file_provider(),
4842 SVN::Client::get_ssl_client_cert_pw_prompt_provider(
4843 \&Git::SVN::Prompt::ssl_client_cert_pw, 2),
4844 SVN::Client::get_username_provider(),
4845 SVN::Client::get_ssl_server_trust_prompt_provider(
4846 \&Git::SVN::Prompt::ssl_server_trust),
4847 SVN::Client::get_username_prompt_provider(
4848 \&Git::SVN::Prompt::username, 2)
4849 ]
4850 }
4851
4852 sub escape_uri_only {
4853 my ($uri) = @_;
4854 my @tmp;
4855 foreach (split m{/}, $uri) {
4856 s/([^~\w.%+-]|%(?![a-fA-F0-9]{2}))/sprintf("%%%02X",ord($1))/eg;
4857 push @tmp, $_;
4858 }
4859 join('/', @tmp);
4860 }
4861
4862 sub escape_url {
4863 my ($url) = @_;
4864 if ($url =~ m#^(https?)://([^/]+)(.*)$#) {
4865 my ($scheme, $domain, $uri) = ($1, $2, escape_uri_only($3));
4866 $url = "$scheme://$domain$uri";
4867 }
4868 $url;
4869 }
4870
4871 sub new {
4872 my ($class, $url) = @_;
4873 $url =~ s!/+$!!;
4874 return $RA if ($RA && $RA->{url} eq $url);
4875
4876 ::_req_svn();
4877
4878 SVN::_Core::svn_config_ensure($config_dir, undef);
4879 my ($baton, $callbacks) = SVN::Core::auth_open_helper(_auth_providers);
4880 my $config = SVN::Core::config_get_config($config_dir);
4881 $RA = undef;
4882 my $dont_store_passwords = 1;
4883 my $conf_t = ${$config}{'config'};
4884 {
4885 no warnings 'once';
4886 # The usage of $SVN::_Core::SVN_CONFIG_* variables
4887 # produces warnings that variables are used only once.
4888 # I had not found the better way to shut them up, so
4889 # the warnings of type 'once' are disabled in this block.
4890 if (SVN::_Core::svn_config_get_bool($conf_t,
4891 $SVN::_Core::SVN_CONFIG_SECTION_AUTH,
4892 $SVN::_Core::SVN_CONFIG_OPTION_STORE_PASSWORDS,
4893 1) == 0) {
4894 SVN::_Core::svn_auth_set_parameter($baton,
4895 $SVN::_Core::SVN_AUTH_PARAM_DONT_STORE_PASSWORDS,
4896 bless (\$dont_store_passwords, "_p_void"));
4897 }
4898 if (SVN::_Core::svn_config_get_bool($conf_t,
4899 $SVN::_Core::SVN_CONFIG_SECTION_AUTH,
4900 $SVN::_Core::SVN_CONFIG_OPTION_STORE_AUTH_CREDS,
4901 1) == 0) {
4902 $Git::SVN::Prompt::_no_auth_cache = 1;
4903 }
4904 } # no warnings 'once'
4905 my $self = SVN::Ra->new(url => escape_url($url), auth => $baton,
4906 config => $config,
4907 pool => SVN::Pool->new,
4908 auth_provider_callbacks => $callbacks);
4909 $self->{url} = $url;
4910 $self->{svn_path} = $url;
4911 $self->{repos_root} = $self->get_repos_root;
4912 $self->{svn_path} =~ s#^\Q$self->{repos_root}\E(/|$)##;
4913 $self->{cache} = { check_path => { r => 0, data => {} },
4914 get_dir => { r => 0, data => {} } };
4915 $RA = bless $self, $class;
4916 }
4917
4918 sub check_path {
4919 my ($self, $path, $r) = @_;
4920 my $cache = $self->{cache}->{check_path};
4921 if ($r == $cache->{r} && exists $cache->{data}->{$path}) {
4922 return $cache->{data}->{$path};
4923 }
4924 my $pool = SVN::Pool->new;
4925 my $t = $self->SUPER::check_path($path, $r, $pool);
4926 $pool->clear;
4927 if ($r != $cache->{r}) {
4928 %{$cache->{data}} = ();
4929 $cache->{r} = $r;
4930 }
4931 $cache->{data}->{$path} = $t;
4932 }
4933
4934 sub get_dir {
4935 my ($self, $dir, $r) = @_;
4936 my $cache = $self->{cache}->{get_dir};
4937 if ($r == $cache->{r}) {
4938 if (my $x = $cache->{data}->{$dir}) {
4939 return wantarray ? @$x : $x->[0];
4940 }
4941 }
4942 my $pool = SVN::Pool->new;
4943 my ($d, undef, $props) = $self->SUPER::get_dir($dir, $r, $pool);
4944 my %dirents = map { $_ => { kind => $d->{$_}->kind } } keys %$d;
4945 $pool->clear;
4946 if ($r != $cache->{r}) {
4947 %{$cache->{data}} = ();
4948 $cache->{r} = $r;
4949 }
4950 $cache->{data}->{$dir} = [ \%dirents, $r, $props ];
4951 wantarray ? (\%dirents, $r, $props) : \%dirents;
4952 }
4953
4954 sub DESTROY {
4955 # do not call the real DESTROY since we store ourselves in $RA
4956 }
4957
4958 # get_log(paths, start, end, limit,
4959 # discover_changed_paths, strict_node_history, receiver)
4960 sub get_log {
4961 my ($self, @args) = @_;
4962 my $pool = SVN::Pool->new;
4963
4964 # svn_log_changed_path_t objects passed to get_log are likely to be
4965 # overwritten even if only the refs are copied to an external variable,
4966 # so we should dup the structures in their entirety. Using an
4967 # externally passed pool (instead of our temporary and quickly cleared
4968 # pool in Git::SVN::Ra) does not help matters at all...
4969 my $receiver = pop @args;
4970 my $prefix = "/".$self->{svn_path};
4971 $prefix =~ s#/+($)##;
4972 my $prefix_regex = qr#^\Q$prefix\E#;
4973 push(@args, sub {
4974 my ($paths) = $_[0];
4975 return &$receiver(@_) unless $paths;
4976 $_[0] = ();
4977 foreach my $p (keys %$paths) {
4978 my $i = $paths->{$p};
4979 # Make path relative to our url, not repos_root
4980 $p =~ s/$prefix_regex//;
4981 my %s = map { $_ => $i->$_; }
4982 qw/copyfrom_path copyfrom_rev action/;
4983 if ($s{'copyfrom_path'}) {
4984 $s{'copyfrom_path'} =~ s/$prefix_regex//;
4985 }
4986 $_[0]{$p} = \%s;
4987 }
4988 &$receiver(@_);
4989 });
4990
4991
4992 # the limit parameter was not supported in SVN 1.1.x, so we
4993 # drop it. Therefore, the receiver callback passed to it
4994 # is made aware of this limitation by being wrapped if
4995 # the limit passed to is being wrapped.
4996 if ($SVN::Core::VERSION le '1.2.0') {
4997 my $limit = splice(@args, 3, 1);
4998 if ($limit > 0) {
4999 my $receiver = pop @args;
5000 push(@args, sub { &$receiver(@_) if (--$limit >= 0) });
5001 }
5002 }
5003 my $ret = $self->SUPER::get_log(@args, $pool);
5004 $pool->clear;
5005 $ret;
5006 }
5007
5008 sub trees_match {
5009 my ($self, $url1, $rev1, $url2, $rev2) = @_;
5010 my $ctx = SVN::Client->new(auth => _auth_providers);
5011 my $out = IO::File->new_tmpfile;
5012
5013 # older SVN (1.1.x) doesn't take $pool as the last parameter for
5014 # $ctx->diff(), so we'll create a default one
5015 my $pool = SVN::Pool->new_default_sub;
5016
5017 $ra_invalid = 1; # this will open a new SVN::Ra connection to $url1
5018 $ctx->diff([], $url1, $rev1, $url2, $rev2, 1, 1, 0, $out, $out);
5019 $out->flush;
5020 my $ret = (($out->stat)[7] == 0);
5021 close $out or croak $!;
5022
5023 $ret;
5024 }
5025
5026 sub get_commit_editor {
5027 my ($self, $log, $cb, $pool) = @_;
5028 my @lock = $SVN::Core::VERSION ge '1.2.0' ? (undef, 0) : ();
5029 $self->SUPER::get_commit_editor($log, $cb, @lock, $pool);
5030 }
5031
5032 sub gs_do_update {
5033 my ($self, $rev_a, $rev_b, $gs, $editor) = @_;
5034 my $new = ($rev_a == $rev_b);
5035 my $path = $gs->{path};
5036
5037 if ($new && -e $gs->{index}) {
5038 unlink $gs->{index} or die
5039 "Couldn't unlink index: $gs->{index}: $!\n";
5040 }
5041 my $pool = SVN::Pool->new;
5042 $editor->set_path_strip($path);
5043 my (@pc) = split m#/#, $path;
5044 my $reporter = $self->do_update($rev_b, (@pc ? shift @pc : ''),
5045 1, $editor, $pool);
5046 my @lock = $SVN::Core::VERSION ge '1.2.0' ? (undef) : ();
5047
5048 # Since we can't rely on svn_ra_reparent being available, we'll
5049 # just have to do some magic with set_path to make it so
5050 # we only want a partial path.
5051 my $sp = '';
5052 my $final = join('/', @pc);
5053 while (@pc) {
5054 $reporter->set_path($sp, $rev_b, 0, @lock, $pool);
5055 $sp .= '/' if length $sp;
5056 $sp .= shift @pc;
5057 }
5058 die "BUG: '$sp' != '$final'\n" if ($sp ne $final);
5059
5060 $reporter->set_path($sp, $rev_a, $new, @lock, $pool);
5061
5062 $reporter->finish_report($pool);
5063 $pool->clear;
5064 $editor->{git_commit_ok};
5065 }
5066
5067 # this requires SVN 1.4.3 or later (do_switch didn't work before 1.4.3, and
5068 # svn_ra_reparent didn't work before 1.4)
5069 sub gs_do_switch {
5070 my ($self, $rev_a, $rev_b, $gs, $url_b, $editor) = @_;
5071 my $path = $gs->{path};
5072 my $pool = SVN::Pool->new;
5073
5074 my $full_url = $self->{url};
5075 my $old_url = $full_url;
5076 $full_url .= '/' . $path if length $path;
5077 my ($ra, $reparented);
5078
5079 if ($old_url =~ m#^svn(\+ssh)?://# ||
5080 ($full_url =~ m#^https?://# &&
5081 escape_url($full_url) ne $full_url)) {
5082 $_[0] = undef;
5083 $self = undef;
5084 $RA = undef;
5085 $ra = Git::SVN::Ra->new($full_url);
5086 $ra_invalid = 1;
5087 } elsif ($old_url ne $full_url) {
5088 SVN::_Ra::svn_ra_reparent($self->{session}, $full_url, $pool);
5089 $self->{url} = $full_url;
5090 $reparented = 1;
5091 }
5092
5093 $ra ||= $self;
5094 $url_b = escape_url($url_b);
5095 my $reporter = $ra->do_switch($rev_b, '', 1, $url_b, $editor, $pool);
5096 my @lock = $SVN::Core::VERSION ge '1.2.0' ? (undef) : ();
5097 $reporter->set_path('', $rev_a, 0, @lock, $pool);
5098 $reporter->finish_report($pool);
5099
5100 if ($reparented) {
5101 SVN::_Ra::svn_ra_reparent($self->{session}, $old_url, $pool);
5102 $self->{url} = $old_url;
5103 }
5104
5105 $pool->clear;
5106 $editor->{git_commit_ok};
5107 }
5108
5109 sub longest_common_path {
5110 my ($gsv, $globs) = @_;
5111 my %common;
5112 my $common_max = scalar @$gsv;
5113
5114 foreach my $gs (@$gsv) {
5115 my @tmp = split m#/#, $gs->{path};
5116 my $p = '';
5117 foreach (@tmp) {
5118 $p .= length($p) ? "/$_" : $_;
5119 $common{$p} ||= 0;
5120 $common{$p}++;
5121 }
5122 }
5123 $globs ||= [];
5124 $common_max += scalar @$globs;
5125 foreach my $glob (@$globs) {
5126 my @tmp = split m#/#, $glob->{path}->{left};
5127 my $p = '';
5128 foreach (@tmp) {
5129 $p .= length($p) ? "/$_" : $_;
5130 $common{$p} ||= 0;
5131 $common{$p}++;
5132 }
5133 }
5134
5135 my $longest_path = '';
5136 foreach (sort {length $b <=> length $a} keys %common) {
5137 if ($common{$_} == $common_max) {
5138 $longest_path = $_;
5139 last;
5140 }
5141 }
5142 $longest_path;
5143 }
5144
5145 sub gs_fetch_loop_common {
5146 my ($self, $base, $head, $gsv, $globs) = @_;
5147 return if ($base > $head);
5148 my $inc = $_log_window_size;
5149 my ($min, $max) = ($base, $head < $base + $inc ? $head : $base + $inc);
5150 my $longest_path = longest_common_path($gsv, $globs);
5151 my $ra_url = $self->{url};
5152 my $find_trailing_edge;
5153 while (1) {
5154 my %revs;
5155 my $err;
5156 my $err_handler = $SVN::Error::handler;
5157 $SVN::Error::handler = sub {
5158 ($err) = @_;
5159 skip_unknown_revs($err);
5160 };
5161 sub _cb {
5162 my ($paths, $r, $author, $date, $log) = @_;
5163 [ $paths,
5164 { author => $author, date => $date, log => $log } ];
5165 }
5166 $self->get_log([$longest_path], $min, $max, 0, 1, 1,
5167 sub { $revs{$_[1]} = _cb(@_) });
5168 if ($err) {
5169 print "Checked through r$max\r";
5170 } else {
5171 $find_trailing_edge = 1;
5172 }
5173 if ($err and $find_trailing_edge) {
5174 print STDERR "Path '$longest_path' ",
5175 "was probably deleted:\n",
5176 $err->expanded_message,
5177 "\nWill attempt to follow ",
5178 "revisions r$min .. r$max ",
5179 "committed before the deletion\n";
5180 my $hi = $max;
5181 while (--$hi >= $min) {
5182 my $ok;
5183 $self->get_log([$longest_path], $min, $hi,
5184 0, 1, 1, sub {
5185 $ok = $_[1];
5186 $revs{$_[1]} = _cb(@_) });
5187 if ($ok) {
5188 print STDERR "r$min .. r$ok OK\n";
5189 last;
5190 }
5191 }
5192 $find_trailing_edge = 0;
5193 }
5194 $SVN::Error::handler = $err_handler;
5195
5196 my %exists = map { $_->{path} => $_ } @$gsv;
5197 foreach my $r (sort {$a <=> $b} keys %revs) {
5198 my ($paths, $logged) = @{$revs{$r}};
5199
5200 foreach my $gs ($self->match_globs(\%exists, $paths,
5201 $globs, $r)) {
5202 if ($gs->rev_map_max >= $r) {
5203 next;
5204 }
5205 next unless $gs->match_paths($paths, $r);
5206 $gs->{logged_rev_props} = $logged;
5207 if (my $last_commit = $gs->last_commit) {
5208 $gs->assert_index_clean($last_commit);
5209 }
5210 my $log_entry = $gs->do_fetch($paths, $r);
5211 if ($log_entry) {
5212 $gs->do_git_commit($log_entry);
5213 }
5214 $INDEX_FILES{$gs->{index}} = 1;
5215 }
5216 foreach my $g (@$globs) {
5217 my $k = "svn-remote.$g->{remote}." .
5218 "$g->{t}-maxRev";
5219 Git::SVN::tmp_config($k, $r);
5220 }
5221 if ($ra_invalid) {
5222 $_[0] = undef;
5223 $self = undef;
5224 $RA = undef;
5225 $self = Git::SVN::Ra->new($ra_url);
5226 $ra_invalid = undef;
5227 }
5228 }
5229 # pre-fill the .rev_db since it'll eventually get filled in
5230 # with '0' x40 if something new gets committed
5231 foreach my $gs (@$gsv) {
5232 next if $gs->rev_map_max >= $max;
5233 next if defined $gs->rev_map_get($max);
5234 $gs->rev_map_set($max, 0 x40);
5235 }
5236 foreach my $g (@$globs) {
5237 my $k = "svn-remote.$g->{remote}.$g->{t}-maxRev";
5238 Git::SVN::tmp_config($k, $max);
5239 }
5240 last if $max >= $head;
5241 $min = $max + 1;
5242 $max += $inc;
5243 $max = $head if ($max > $head);
5244 }
5245 Git::SVN::gc();
5246 }
5247
5248 sub get_dir_globbed {
5249 my ($self, $left, $depth, $r) = @_;
5250
5251 my @x = eval { $self->get_dir($left, $r) };
5252 return unless scalar @x == 3;
5253 my $dirents = $x[0];
5254 my @finalents;
5255 foreach my $de (keys %$dirents) {
5256 next if $dirents->{$de}->{kind} != $SVN::Node::dir;
5257 if ($depth > 1) {
5258 my @args = ("$left/$de", $depth - 1, $r);
5259 foreach my $dir ($self->get_dir_globbed(@args)) {
5260 push @finalents, "$de/$dir";
5261 }
5262 } else {
5263 push @finalents, $de;
5264 }
5265 }
5266 @finalents;
5267 }
5268
5269 sub match_globs {
5270 my ($self, $exists, $paths, $globs, $r) = @_;
5271
5272 sub get_dir_check {
5273 my ($self, $exists, $g, $r) = @_;
5274
5275 my @dirs = $self->get_dir_globbed($g->{path}->{left},
5276 $g->{path}->{depth},
5277 $r);
5278
5279 foreach my $de (@dirs) {
5280 my $p = $g->{path}->full_path($de);
5281 next if $exists->{$p};
5282 next if (length $g->{path}->{right} &&
5283 ($self->check_path($p, $r) !=
5284 $SVN::Node::dir));
5285 next unless $p =~ /$g->{path}->{regex}/;
5286 $exists->{$p} = Git::SVN->init($self->{url}, $p, undef,
5287 $g->{ref}->full_path($de), 1);
5288 }
5289 }
5290 foreach my $g (@$globs) {
5291 if (my $path = $paths->{"/$g->{path}->{left}"}) {
5292 if ($path->{action} =~ /^[AR]$/) {
5293 get_dir_check($self, $exists, $g, $r);
5294 }
5295 }
5296 foreach (keys %$paths) {
5297 if (/$g->{path}->{left_regex}/ &&
5298 !/$g->{path}->{regex}/) {
5299 next if $paths->{$_}->{action} !~ /^[AR]$/;
5300 get_dir_check($self, $exists, $g, $r);
5301 }
5302 next unless /$g->{path}->{regex}/;
5303 my $p = $1;
5304 my $pathname = $g->{path}->full_path($p);
5305 next if $exists->{$pathname};
5306 next if ($self->check_path($pathname, $r) !=
5307 $SVN::Node::dir);
5308 $exists->{$pathname} = Git::SVN->init(
5309 $self->{url}, $pathname, undef,
5310 $g->{ref}->full_path($p), 1);
5311 }
5312 my $c = '';
5313 foreach (split m#/#, $g->{path}->{left}) {
5314 $c .= "/$_";
5315 next unless ($paths->{$c} &&
5316 ($paths->{$c}->{action} =~ /^[AR]$/));
5317 get_dir_check($self, $exists, $g, $r);
5318 }
5319 }
5320 values %$exists;
5321 }
5322
5323 sub minimize_url {
5324 my ($self) = @_;
5325 return $self->{url} if ($self->{url} eq $self->{repos_root});
5326 my $url = $self->{repos_root};
5327 my @components = split(m!/!, $self->{svn_path});
5328 my $c = '';
5329 do {
5330 $url .= "/$c" if length $c;
5331 eval {
5332 my $ra = (ref $self)->new($url);
5333 my $latest = $ra->get_latest_revnum;
5334 $ra->get_log("", $latest, 0, 1, 0, 1, sub {});
5335 };
5336 } while ($@ && ($c = shift @components));
5337 $url;
5338 }
5339
5340 sub can_do_switch {
5341 my $self = shift;
5342 unless (defined $can_do_switch) {
5343 my $pool = SVN::Pool->new;
5344 my $rep = eval {
5345 $self->do_switch(1, '', 0, $self->{url},
5346 SVN::Delta::Editor->new, $pool);
5347 };
5348 if ($@) {
5349 $can_do_switch = 0;
5350 } else {
5351 $rep->abort_report($pool);
5352 $can_do_switch = 1;
5353 }
5354 $pool->clear;
5355 }
5356 $can_do_switch;
5357 }
5358
5359 sub skip_unknown_revs {
5360 my ($err) = @_;
5361 my $errno = $err->apr_err();
5362 # Maybe the branch we're tracking didn't
5363 # exist when the repo started, so it's
5364 # not an error if it doesn't, just continue
5365 #
5366 # Wonderfully consistent library, eh?
5367 # 160013 - svn:// and file://
5368 # 175002 - http(s)://
5369 # 175007 - http(s):// (this repo required authorization, too...)
5370 # More codes may be discovered later...
5371 if ($errno == 175007 || $errno == 175002 || $errno == 160013) {
5372 my $err_key = $err->expanded_message;
5373 # revision numbers change every time, filter them out
5374 $err_key =~ s/\d+/\0/g;
5375 $err_key = "$errno\0$err_key";
5376 unless ($ignored_err{$err_key}) {
5377 warn "W: Ignoring error from SVN, path probably ",
5378 "does not exist: ($errno): ",
5379 $err->expanded_message,"\n";
5380 warn "W: Do not be alarmed at the above message ",
5381 "git-svn is just searching aggressively for ",
5382 "old history.\n",
5383 "This may take a while on large repositories\n";
5384 $ignored_err{$err_key} = 1;
5385 }
5386 return;
5387 }
5388 die "Error from SVN, ($errno): ", $err->expanded_message,"\n";
5389 }
5390
5391 package Git::SVN::Log;
5392 use strict;
5393 use warnings;
5394 use POSIX qw/strftime/;
5395 use Time::Local;
5396 use constant commit_log_separator => ('-' x 72) . "\n";
5397 use vars qw/$TZ $limit $color $pager $non_recursive $verbose $oneline
5398 %rusers $show_commit $incremental/;
5399 my $l_fmt;
5400
5401 sub cmt_showable {
5402 my ($c) = @_;
5403 return 1 if defined $c->{r};
5404
5405 # big commit message got truncated by the 16k pretty buffer in rev-list
5406 if ($c->{l} && $c->{l}->[-1] eq "...\n" &&
5407 $c->{a_raw} =~ /\@([a-f\d\-]+)>$/) {
5408 @{$c->{l}} = ();
5409 my @log = command(qw/cat-file commit/, $c->{c});
5410
5411 # shift off the headers
5412 shift @log while ($log[0] ne '');
5413 shift @log;
5414
5415 # TODO: make $c->{l} not have a trailing newline in the future
5416 @{$c->{l}} = map { "$_\n" } grep !/^git-svn-id: /, @log;
5417
5418 (undef, $c->{r}, undef) = ::extract_metadata(
5419 (grep(/^git-svn-id: /, @log))[-1]);
5420 }
5421 return defined $c->{r};
5422 }
5423
5424 sub log_use_color {
5425 return $color || Git->repository->get_colorbool('color.diff');
5426 }
5427
5428 sub git_svn_log_cmd {
5429 my ($r_min, $r_max, @args) = @_;
5430 my $head = 'HEAD';
5431 my (@files, @log_opts);
5432 foreach my $x (@args) {
5433 if ($x eq '--' || @files) {
5434 push @files, $x;
5435 } else {
5436 if (::verify_ref("$x^0")) {
5437 $head = $x;
5438 } else {
5439 push @log_opts, $x;
5440 }
5441 }
5442 }
5443
5444 my ($url, $rev, $uuid, $gs) = ::working_head_info($head);
5445 $gs ||= Git::SVN->_new;
5446 my @cmd = (qw/log --abbrev-commit --pretty=raw --default/,
5447 $gs->refname);
5448 push @cmd, '-r' unless $non_recursive;
5449 push @cmd, qw/--raw --name-status/ if $verbose;
5450 push @cmd, '--color' if log_use_color();
5451 push @cmd, @log_opts;
5452 if (defined $r_max && $r_max == $r_min) {
5453 push @cmd, '--max-count=1';
5454 if (my $c = $gs->rev_map_get($r_max)) {
5455 push @cmd, $c;
5456 }
5457 } elsif (defined $r_max) {
5458 if ($r_max < $r_min) {
5459 ($r_min, $r_max) = ($r_max, $r_min);
5460 }
5461 my (undef, $c_max) = $gs->find_rev_before($r_max, 1, $r_min);
5462 my (undef, $c_min) = $gs->find_rev_after($r_min, 1, $r_max);
5463 # If there are no commits in the range, both $c_max and $c_min
5464 # will be undefined. If there is at least 1 commit in the
5465 # range, both will be defined.
5466 return () if !defined $c_min || !defined $c_max;
5467 if ($c_min eq $c_max) {
5468 push @cmd, '--max-count=1', $c_min;
5469 } else {
5470 push @cmd, '--boundary', "$c_min..$c_max";
5471 }
5472 }
5473 return (@cmd, @files);
5474 }
5475
5476 # adapted from pager.c
5477 sub config_pager {
5478 if (! -t *STDOUT) {
5479 $ENV{GIT_PAGER_IN_USE} = 'false';
5480 $pager = undef;
5481 return;
5482 }
5483 chomp($pager = command_oneline(qw(var GIT_PAGER)));
5484 if ($pager eq 'cat') {
5485 $pager = undef;
5486 }
5487 $ENV{GIT_PAGER_IN_USE} = defined($pager);
5488 }
5489
5490 sub run_pager {
5491 return unless defined $pager;
5492 pipe my ($rfd, $wfd) or return;
5493 defined(my $pid = fork) or ::fatal "Can't fork: $!";
5494 if (!$pid) {
5495 open STDOUT, '>&', $wfd or
5496 ::fatal "Can't redirect to stdout: $!";
5497 return;
5498 }
5499 open STDIN, '<&', $rfd or ::fatal "Can't redirect stdin: $!";
5500 $ENV{LESS} ||= 'FRSX';
5501 exec $pager or ::fatal "Can't run pager: $! ($pager)";
5502 }
5503
5504 sub format_svn_date {
5505 # some systmes don't handle or mishandle %z, so be creative.
5506 my $t = shift || time;
5507 my $gm = timelocal(gmtime($t));
5508 my $sign = qw( + + - )[ $t <=> $gm ];
5509 my $gmoff = sprintf("%s%02d%02d", $sign, (gmtime(abs($t - $gm)))[2,1]);
5510 return strftime("%Y-%m-%d %H:%M:%S $gmoff (%a, %d %b %Y)", localtime($t));
5511 }
5512
5513 sub parse_git_date {
5514 my ($t, $tz) = @_;
5515 # Date::Parse isn't in the standard Perl distro :(
5516 if ($tz =~ s/^\+//) {
5517 $t += tz_to_s_offset($tz);
5518 } elsif ($tz =~ s/^\-//) {
5519 $t -= tz_to_s_offset($tz);
5520 }
5521 return $t;
5522 }
5523
5524 sub set_local_timezone {
5525 if (defined $TZ) {
5526 $ENV{TZ} = $TZ;
5527 } else {
5528 delete $ENV{TZ};
5529 }
5530 }
5531
5532 sub tz_to_s_offset {
5533 my ($tz) = @_;
5534 $tz =~ s/(\d\d)$//;
5535 return ($1 * 60) + ($tz * 3600);
5536 }
5537
5538 sub get_author_info {
5539 my ($dest, $author, $t, $tz) = @_;
5540 $author =~ s/(?:^\s*|\s*$)//g;
5541 $dest->{a_raw} = $author;
5542 my $au;
5543 if ($::_authors) {
5544 $au = $rusers{$author} || undef;
5545 }
5546 if (!$au) {
5547 ($au) = ($author =~ /<([^>]+)\@[^>]+>$/);
5548 }
5549 $dest->{t} = $t;
5550 $dest->{tz} = $tz;
5551 $dest->{a} = $au;
5552 $dest->{t_utc} = parse_git_date($t, $tz);
5553 }
5554
5555 sub process_commit {
5556 my ($c, $r_min, $r_max, $defer) = @_;
5557 if (defined $r_min && defined $r_max) {
5558 if ($r_min == $c->{r} && $r_min == $r_max) {
5559 show_commit($c);
5560 return 0;
5561 }
5562 return 1 if $r_min == $r_max;
5563 if ($r_min < $r_max) {
5564 # we need to reverse the print order
5565 return 0 if (defined $limit && --$limit < 0);
5566 push @$defer, $c;
5567 return 1;
5568 }
5569 if ($r_min != $r_max) {
5570 return 1 if ($r_min < $c->{r});
5571 return 1 if ($r_max > $c->{r});
5572 }
5573 }
5574 return 0 if (defined $limit && --$limit < 0);
5575 show_commit($c);
5576 return 1;
5577 }
5578
5579 sub show_commit {
5580 my $c = shift;
5581 if ($oneline) {
5582 my $x = "\n";
5583 if (my $l = $c->{l}) {
5584 while ($l->[0] =~ /^\s*$/) { shift @$l }
5585 $x = $l->[0];
5586 }
5587 $l_fmt ||= 'A' . length($c->{r});
5588 print 'r',pack($l_fmt, $c->{r}),' | ';
5589 print "$c->{c} | " if $show_commit;
5590 print $x;
5591 } else {
5592 show_commit_normal($c);
5593 }
5594 }
5595
5596 sub show_commit_changed_paths {
5597 my ($c) = @_;
5598 return unless $c->{changed};
5599 print "Changed paths:\n", @{$c->{changed}};
5600 }
5601
5602 sub show_commit_normal {
5603 my ($c) = @_;
5604 print commit_log_separator, "r$c->{r} | ";
5605 print "$c->{c} | " if $show_commit;
5606 print "$c->{a} | ", format_svn_date($c->{t_utc}), ' | ';
5607 my $nr_line = 0;
5608
5609 if (my $l = $c->{l}) {
5610 while ($l->[$#$l] eq "\n" && $#$l > 0
5611 && $l->[($#$l - 1)] eq "\n") {
5612 pop @$l;
5613 }
5614 $nr_line = scalar @$l;
5615 if (!$nr_line) {
5616 print "1 line\n\n\n";
5617 } else {
5618 if ($nr_line == 1) {
5619 $nr_line = '1 line';
5620 } else {
5621 $nr_line .= ' lines';
5622 }
5623 print $nr_line, "\n";
5624 show_commit_changed_paths($c);
5625 print "\n";
5626 print $_ foreach @$l;
5627 }
5628 } else {
5629 print "1 line\n";
5630 show_commit_changed_paths($c);
5631 print "\n";
5632
5633 }
5634 foreach my $x (qw/raw stat diff/) {
5635 if ($c->{$x}) {
5636 print "\n";
5637 print $_ foreach @{$c->{$x}}
5638 }
5639 }
5640 }
5641
5642 sub cmd_show_log {
5643 my (@args) = @_;
5644 my ($r_min, $r_max);
5645 my $r_last = -1; # prevent dupes
5646 set_local_timezone();
5647 if (defined $::_revision) {
5648 if ($::_revision =~ /^(\d+):(\d+)$/) {
5649 ($r_min, $r_max) = ($1, $2);
5650 } elsif ($::_revision =~ /^\d+$/) {
5651 $r_min = $r_max = $::_revision;
5652 } else {
5653 ::fatal "-r$::_revision is not supported, use ",
5654 "standard 'git log' arguments instead";
5655 }
5656 }
5657
5658 config_pager();
5659 @args = git_svn_log_cmd($r_min, $r_max, @args);
5660 if (!@args) {
5661 print commit_log_separator unless $incremental || $oneline;
5662 return;
5663 }
5664 my $log = command_output_pipe(@args);
5665 run_pager();
5666 my (@k, $c, $d, $stat);
5667 my $esc_color = qr/(?:\033\[(?:(?:\d+;)*\d*)?m)*/;
5668 while (<$log>) {
5669 if (/^${esc_color}commit -?($::sha1_short)/o) {
5670 my $cmt = $1;
5671 if ($c && cmt_showable($c) && $c->{r} != $r_last) {
5672 $r_last = $c->{r};
5673 process_commit($c, $r_min, $r_max, \@k) or
5674 goto out;
5675 }
5676 $d = undef;
5677 $c = { c => $cmt };
5678 } elsif (/^${esc_color}author (.+) (\d+) ([\-\+]?\d+)$/o) {
5679 get_author_info($c, $1, $2, $3);
5680 } elsif (/^${esc_color}(?:tree|parent|committer) /o) {
5681 # ignore
5682 } elsif (/^${esc_color}:\d{6} \d{6} $::sha1_short/o) {
5683 push @{$c->{raw}}, $_;
5684 } elsif (/^${esc_color}[ACRMDT]\t/) {
5685 # we could add $SVN->{svn_path} here, but that requires
5686 # remote access at the moment (repo_path_split)...
5687 s#^(${esc_color})([ACRMDT])\t#$1 $2 #o;
5688 push @{$c->{changed}}, $_;
5689 } elsif (/^${esc_color}diff /o) {
5690 $d = 1;
5691 push @{$c->{diff}}, $_;
5692 } elsif ($d) {
5693 push @{$c->{diff}}, $_;
5694 } elsif (/^\ .+\ \|\s*\d+\ $esc_color[\+\-]*
5695 $esc_color*[\+\-]*$esc_color$/x) {
5696 $stat = 1;
5697 push @{$c->{stat}}, $_;
5698 } elsif ($stat && /^ \d+ files changed, \d+ insertions/) {
5699 push @{$c->{stat}}, $_;
5700 $stat = undef;
5701 } elsif (/^${esc_color} (git-svn-id:.+)$/o) {
5702 ($c->{url}, $c->{r}, undef) = ::extract_metadata($1);
5703 } elsif (s/^${esc_color} //o) {
5704 push @{$c->{l}}, $_;
5705 }
5706 }
5707 if ($c && defined $c->{r} && $c->{r} != $r_last) {
5708 $r_last = $c->{r};
5709 process_commit($c, $r_min, $r_max, \@k);
5710 }
5711 if (@k) {
5712 ($r_min, $r_max) = ($r_max, $r_min);
5713 process_commit($_, $r_min, $r_max) foreach reverse @k;
5714 }
5715 out:
5716 close $log;
5717 print commit_log_separator unless $incremental || $oneline;
5718 }
5719
5720 sub cmd_blame {
5721 my $path = pop;
5722
5723 config_pager();
5724 run_pager();
5725
5726 my ($fh, $ctx, $rev);
5727
5728 if ($_git_format) {
5729 ($fh, $ctx) = command_output_pipe('blame', @_, $path);
5730 while (my $line = <$fh>) {
5731 if ($line =~ /^\^?([[:xdigit:]]+)\s/) {
5732 # Uncommitted edits show up as a rev ID of
5733 # all zeros, which we can't look up with
5734 # cmt_metadata
5735 if ($1 !~ /^0+$/) {
5736 (undef, $rev, undef) =
5737 ::cmt_metadata($1);
5738 $rev = '0' if (!$rev);
5739 } else {
5740 $rev = '0';
5741 }
5742 $rev = sprintf('%-10s', $rev);
5743 $line =~ s/^\^?[[:xdigit:]]+(\s)/$rev$1/;
5744 }
5745 print $line;
5746 }
5747 } else {
5748 ($fh, $ctx) = command_output_pipe('blame', '-p', @_, 'HEAD',
5749 '--', $path);
5750 my ($sha1);
5751 my %authors;
5752 my @buffer;
5753 my %dsha; #distinct sha keys
5754
5755 while (my $line = <$fh>) {
5756 push @buffer, $line;
5757 if ($line =~ /^([[:xdigit:]]{40})\s\d+\s\d+/) {
5758 $dsha{$1} = 1;
5759 }
5760 }
5761
5762 my $s2r = ::cmt_sha2rev_batch([keys %dsha]);
5763
5764 foreach my $line (@buffer) {
5765 if ($line =~ /^([[:xdigit:]]{40})\s\d+\s\d+/) {
5766 $rev = $s2r->{$1};
5767 $rev = '0' if (!$rev)
5768 }
5769 elsif ($line =~ /^author (.*)/) {
5770 $authors{$rev} = $1;
5771 $authors{$rev} =~ s/\s/_/g;
5772 }
5773 elsif ($line =~ /^\t(.*)$/) {
5774 printf("%6s %10s %s\n", $rev, $authors{$rev}, $1);
5775 }
5776 }
5777 }
5778 command_close_pipe($fh, $ctx);
5779 }
5780
5781 package Git::SVN::Migration;
5782 # these version numbers do NOT correspond to actual version numbers
5783 # of git nor git-svn. They are just relative.
5784 #
5785 # v0 layout: .git/$id/info/url, refs/heads/$id-HEAD
5786 #
5787 # v1 layout: .git/$id/info/url, refs/remotes/$id
5788 #
5789 # v2 layout: .git/svn/$id/info/url, refs/remotes/$id
5790 #
5791 # v3 layout: .git/svn/$id, refs/remotes/$id
5792 # - info/url may remain for backwards compatibility
5793 # - this is what we migrate up to this layout automatically,
5794 # - this will be used by git svn init on single branches
5795 # v3.1 layout (auto migrated):
5796 # - .rev_db => .rev_db.$UUID, .rev_db will remain as a symlink
5797 # for backwards compatibility
5798 #
5799 # v4 layout: .git/svn/$repo_id/$id, refs/remotes/$repo_id/$id
5800 # - this is only created for newly multi-init-ed
5801 # repositories. Similar in spirit to the
5802 # --use-separate-remotes option in git-clone (now default)
5803 # - we do not automatically migrate to this (following
5804 # the example set by core git)
5805 #
5806 # v5 layout: .rev_db.$UUID => .rev_map.$UUID
5807 # - newer, more-efficient format that uses 24-bytes per record
5808 # with no filler space.
5809 # - use xxd -c24 < .rev_map.$UUID to view and debug
5810 # - This is a one-way migration, repositories updated to the
5811 # new format will not be able to use old git-svn without
5812 # rebuilding the .rev_db. Rebuilding the rev_db is not
5813 # possible if noMetadata or useSvmProps are set; but should
5814 # be no problem for users that use the (sensible) defaults.
5815 use strict;
5816 use warnings;
5817 use Carp qw/croak/;
5818 use File::Path qw/mkpath/;
5819 use File::Basename qw/dirname basename/;
5820 use vars qw/$_minimize/;
5821
5822 sub migrate_from_v0 {
5823 my $git_dir = $ENV{GIT_DIR};
5824 return undef unless -d $git_dir;
5825 my ($fh, $ctx) = command_output_pipe(qw/rev-parse --symbolic --all/);
5826 my $migrated = 0;
5827 while (<$fh>) {
5828 chomp;
5829 my ($id, $orig_ref) = ($_, $_);
5830 next unless $id =~ s#^refs/heads/(.+)-HEAD$#$1#;
5831 next unless -f "$git_dir/$id/info/url";
5832 my $new_ref = "refs/remotes/$id";
5833 if (::verify_ref("$new_ref^0")) {
5834 print STDERR "W: $orig_ref is probably an old ",
5835 "branch used by an ancient version of ",
5836 "git-svn.\n",
5837 "However, $new_ref also exists.\n",
5838 "We will not be able ",
5839 "to use this branch until this ",
5840 "ambiguity is resolved.\n";
5841 next;
5842 }
5843 print STDERR "Migrating from v0 layout...\n" if !$migrated;
5844 print STDERR "Renaming ref: $orig_ref => $new_ref\n";
5845 command_noisy('update-ref', $new_ref, $orig_ref);
5846 command_noisy('update-ref', '-d', $orig_ref, $orig_ref);
5847 $migrated++;
5848 }
5849 command_close_pipe($fh, $ctx);
5850 print STDERR "Done migrating from v0 layout...\n" if $migrated;
5851 $migrated;
5852 }
5853
5854 sub migrate_from_v1 {
5855 my $git_dir = $ENV{GIT_DIR};
5856 my $migrated = 0;
5857 return $migrated unless -d $git_dir;
5858 my $svn_dir = "$git_dir/svn";
5859
5860 # just in case somebody used 'svn' as their $id at some point...
5861 return $migrated if -d $svn_dir && ! -f "$svn_dir/info/url";
5862
5863 print STDERR "Migrating from a git-svn v1 layout...\n";
5864 mkpath([$svn_dir]);
5865 print STDERR "Data from a previous version of git-svn exists, but\n\t",
5866 "$svn_dir\n\t(required for this version ",
5867 "($::VERSION) of git-svn) does not exist.\n";
5868 my ($fh, $ctx) = command_output_pipe(qw/rev-parse --symbolic --all/);
5869 while (<$fh>) {
5870 my $x = $_;
5871 next unless $x =~ s#^refs/remotes/##;
5872 chomp $x;
5873 next unless -f "$git_dir/$x/info/url";
5874 my $u = eval { ::file_to_s("$git_dir/$x/info/url") };
5875 next unless $u;
5876 my $dn = dirname("$git_dir/svn/$x");
5877 mkpath([$dn]) unless -d $dn;
5878 if ($x eq 'svn') { # they used 'svn' as GIT_SVN_ID:
5879 mkpath(["$git_dir/svn/svn"]);
5880 print STDERR " - $git_dir/$x/info => ",
5881 "$git_dir/svn/$x/info\n";
5882 rename "$git_dir/$x/info", "$git_dir/svn/$x/info" or
5883 croak "$!: $x";
5884 # don't worry too much about these, they probably
5885 # don't exist with repos this old (save for index,
5886 # and we can easily regenerate that)
5887 foreach my $f (qw/unhandled.log index .rev_db/) {
5888 rename "$git_dir/$x/$f", "$git_dir/svn/$x/$f";
5889 }
5890 } else {
5891 print STDERR " - $git_dir/$x => $git_dir/svn/$x\n";
5892 rename "$git_dir/$x", "$git_dir/svn/$x" or
5893 croak "$!: $x";
5894 }
5895 $migrated++;
5896 }
5897 command_close_pipe($fh, $ctx);
5898 print STDERR "Done migrating from a git-svn v1 layout\n";
5899 $migrated;
5900 }
5901
5902 sub read_old_urls {
5903 my ($l_map, $pfx, $path) = @_;
5904 my @dir;
5905 foreach (<$path/*>) {
5906 if (-r "$_/info/url") {
5907 $pfx .= '/' if $pfx && $pfx !~ m!/$!;
5908 my $ref_id = $pfx . basename $_;
5909 my $url = ::file_to_s("$_/info/url");
5910 $l_map->{$ref_id} = $url;
5911 } elsif (-d $_) {
5912 push @dir, $_;
5913 }
5914 }
5915 foreach (@dir) {
5916 my $x = $_;
5917 $x =~ s!^\Q$ENV{GIT_DIR}\E/svn/!!o;
5918 read_old_urls($l_map, $x, $_);
5919 }
5920 }
5921
5922 sub migrate_from_v2 {
5923 my @cfg = command(qw/config -l/);
5924 return if grep /^svn-remote\..+\.url=/, @cfg;
5925 my %l_map;
5926 read_old_urls(\%l_map, '', "$ENV{GIT_DIR}/svn");
5927 my $migrated = 0;
5928
5929 foreach my $ref_id (sort keys %l_map) {
5930 eval { Git::SVN->init($l_map{$ref_id}, '', undef, $ref_id) };
5931 if ($@) {
5932 Git::SVN->init($l_map{$ref_id}, '', $ref_id, $ref_id);
5933 }
5934 $migrated++;
5935 }
5936 $migrated;
5937 }
5938
5939 sub minimize_connections {
5940 my $r = Git::SVN::read_all_remotes();
5941 my $new_urls = {};
5942 my $root_repos = {};
5943 foreach my $repo_id (keys %$r) {
5944 my $url = $r->{$repo_id}->{url} or next;
5945 my $fetch = $r->{$repo_id}->{fetch} or next;
5946 my $ra = Git::SVN::Ra->new($url);
5947
5948 # skip existing cases where we already connect to the root
5949 if (($ra->{url} eq $ra->{repos_root}) ||
5950 ($ra->{repos_root} eq $repo_id)) {
5951 $root_repos->{$ra->{url}} = $repo_id;
5952 next;
5953 }
5954
5955 my $root_ra = Git::SVN::Ra->new($ra->{repos_root});
5956 my $root_path = $ra->{url};
5957 $root_path =~ s#^\Q$ra->{repos_root}\E(/|$)##;
5958 foreach my $path (keys %$fetch) {
5959 my $ref_id = $fetch->{$path};
5960 my $gs = Git::SVN->new($ref_id, $repo_id, $path);
5961
5962 # make sure we can read when connecting to
5963 # a higher level of a repository
5964 my ($last_rev, undef) = $gs->last_rev_commit;
5965 if (!defined $last_rev) {
5966 $last_rev = eval {
5967 $root_ra->get_latest_revnum;
5968 };
5969 next if $@;
5970 }
5971 my $new = $root_path;
5972 $new .= length $path ? "/$path" : '';
5973 eval {
5974 $root_ra->get_log([$new], $last_rev, $last_rev,
5975 0, 0, 1, sub { });
5976 };
5977 next if $@;
5978 $new_urls->{$ra->{repos_root}}->{$new} =
5979 { ref_id => $ref_id,
5980 old_repo_id => $repo_id,
5981 old_path => $path };
5982 }
5983 }
5984
5985 my @emptied;
5986 foreach my $url (keys %$new_urls) {
5987 # see if we can re-use an existing [svn-remote "repo_id"]
5988 # instead of creating a(n ugly) new section:
5989 my $repo_id = $root_repos->{$url} || $url;
5990
5991 my $fetch = $new_urls->{$url};
5992 foreach my $path (keys %$fetch) {
5993 my $x = $fetch->{$path};
5994 Git::SVN->init($url, $path, $repo_id, $x->{ref_id});
5995 my $pfx = "svn-remote.$x->{old_repo_id}";
5996
5997 my $old_fetch = quotemeta("$x->{old_path}:".
5998 "$x->{ref_id}");
5999 command_noisy(qw/config --unset/,
6000 "$pfx.fetch", '^'. $old_fetch . '$');
6001 delete $r->{$x->{old_repo_id}}->
6002 {fetch}->{$x->{old_path}};
6003 if (!keys %{$r->{$x->{old_repo_id}}->{fetch}}) {
6004 command_noisy(qw/config --unset/,
6005 "$pfx.url");
6006 push @emptied, $x->{old_repo_id}
6007 }
6008 }
6009 }
6010 if (@emptied) {
6011 my $file = $ENV{GIT_CONFIG} || "$ENV{GIT_DIR}/config";
6012 print STDERR <<EOF;
6013 The following [svn-remote] sections in your config file ($file) are empty
6014 and can be safely removed:
6015 EOF
6016 print STDERR "[svn-remote \"$_\"]\n" foreach @emptied;
6017 }
6018 }
6019
6020 sub migration_check {
6021 migrate_from_v0();
6022 migrate_from_v1();
6023 migrate_from_v2();
6024 minimize_connections() if $_minimize;
6025 }
6026
6027 package Git::IndexInfo;
6028 use strict;
6029 use warnings;
6030 use Git qw/command_input_pipe command_close_pipe/;
6031
6032 sub new {
6033 my ($class) = @_;
6034 my ($gui, $ctx) = command_input_pipe(qw/update-index -z --index-info/);
6035 bless { gui => $gui, ctx => $ctx, nr => 0}, $class;
6036 }
6037
6038 sub remove {
6039 my ($self, $path) = @_;
6040 if (print { $self->{gui} } '0 ', 0 x 40, "\t", $path, "\0") {
6041 return ++$self->{nr};
6042 }
6043 undef;
6044 }
6045
6046 sub update {
6047 my ($self, $mode, $hash, $path) = @_;
6048 if (print { $self->{gui} } $mode, ' ', $hash, "\t", $path, "\0") {
6049 return ++$self->{nr};
6050 }
6051 undef;
6052 }
6053
6054 sub DESTROY {
6055 my ($self) = @_;
6056 command_close_pipe($self->{gui}, $self->{ctx});
6057 }
6058
6059 package Git::SVN::GlobSpec;
6060 use strict;
6061 use warnings;
6062
6063 sub new {
6064 my ($class, $glob, $pattern_ok) = @_;
6065 my $re = $glob;
6066 $re =~ s!/+$!!g; # no need for trailing slashes
6067 my (@left, @right, @patterns);
6068 my $state = "left";
6069 my $die_msg = "Only one set of wildcard directories " .
6070 "(e.g. '*' or '*/*/*') is supported: '$glob'\n";
6071 for my $part (split(m|/|, $glob)) {
6072 if ($part =~ /\*/ && $part ne "*") {
6073 die "Invalid pattern in '$glob': $part\n";
6074 } elsif ($pattern_ok && $part =~ /[{}]/ &&
6075 $part !~ /^\{[^{}]+\}/) {
6076 die "Invalid pattern in '$glob': $part\n";
6077 }
6078 if ($part eq "*") {
6079 die $die_msg if $state eq "right";
6080 $state = "pattern";
6081 push(@patterns, "[^/]*");
6082 } elsif ($pattern_ok && $part =~ /^\{(.*)\}$/) {
6083 die $die_msg if $state eq "right";
6084 $state = "pattern";
6085 my $p = quotemeta($1);
6086 $p =~ s/\\,/|/g;
6087 push(@patterns, "(?:$p)");
6088 } else {
6089 if ($state eq "left") {
6090 push(@left, $part);
6091 } else {
6092 push(@right, $part);
6093 $state = "right";
6094 }
6095 }
6096 }
6097 my $depth = @patterns;
6098 if ($depth == 0) {
6099 die "One '*' is needed in glob: '$glob'\n";
6100 }
6101 my $left = join('/', @left);
6102 my $right = join('/', @right);
6103 $re = join('/', @patterns);
6104 $re = join('\/',
6105 grep(length, quotemeta($left), "($re)", quotemeta($right)));
6106 my $left_re = qr/^\/\Q$left\E(\/|$)/;
6107 bless { left => $left, right => $right, left_regex => $left_re,
6108 regex => qr/$re/, glob => $glob, depth => $depth }, $class;
6109 }
6110
6111 sub full_path {
6112 my ($self, $path) = @_;
6113 return (length $self->{left} ? "$self->{left}/" : '') .
6114 $path . (length $self->{right} ? "/$self->{right}" : '');
6115 }
6116
6117 __END__
6118
6119 Data structures:
6120
6121
6122 $remotes = { # returned by read_all_remotes()
6123 'svn' => {
6124 # svn-remote.svn.url=https://svn.musicpd.org
6125 url => 'https://svn.musicpd.org',
6126 # svn-remote.svn.fetch=mpd/trunk:trunk
6127 fetch => {
6128 'mpd/trunk' => 'trunk',
6129 },
6130 # svn-remote.svn.tags=mpd/tags/*:tags/*
6131 tags => {
6132 path => {
6133 left => 'mpd/tags',
6134 right => '',
6135 regex => qr!mpd/tags/([^/]+)$!,
6136 glob => 'tags/*',
6137 },
6138 ref => {
6139 left => 'tags',
6140 right => '',
6141 regex => qr!tags/([^/]+)$!,
6142 glob => 'tags/*',
6143 },
6144 }
6145 }
6146 };
6147
6148 $log_entry hashref as returned by libsvn_log_entry()
6149 {
6150 log => 'whitespace-formatted log entry
6151 ', # trailing newline is preserved
6152 revision => '8', # integer
6153 date => '2004-02-24T17:01:44.108345Z', # commit date
6154 author => 'committer name'
6155 };
6156
6157
6158 # this is generated by generate_diff();
6159 @mods = array of diff-index line hashes, each element represents one line
6160 of diff-index output
6161
6162 diff-index line ($m hash)
6163 {
6164 mode_a => first column of diff-index output, no leading ':',
6165 mode_b => second column of diff-index output,
6166 sha1_b => sha1sum of the final blob,
6167 chg => change type [MCRADT],
6168 file_a => original file name of a file (iff chg is 'C' or 'R')
6169 file_b => new/current file name of a file (any chg)
6170 }
6171 ;
6172
6173 # retval of read_url_paths{,_all}();
6174 $l_map = {
6175 # repository root url
6176 'https://svn.musicpd.org' => {
6177 # repository path # GIT_SVN_ID
6178 'mpd/trunk' => 'trunk',
6179 'mpd/tags/0.11.5' => 'tags/0.11.5',
6180 },
6181 }
6182
6183 Notes:
6184 I don't trust the each() function on unless I created %hash myself
6185 because the internal iterator may not have started at base.
Dscho's miscellaneous git branches