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git-svn: save paths to tags/branches with for future reuse
[git/mingw.git] / git-svn.perl
blobad2ef53f8d22e60e4dc8dfc6b20955439544660e
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
8 $_q $_authors %users/;
9 $AUTHOR = 'Eric Wong <normalperson@yhbt.net>';
10 $VERSION = '@@GIT_VERSION@@';
11
12 $ENV{GIT_DIR} ||= '.git';
13 $Git::SVN::default_repo_id = 'git-svn';
14 $Git::SVN::default_ref_id = $ENV{GIT_SVN_ID} || 'git-svn';
15
16 $Git::SVN::Log::TZ = $ENV{TZ};
17 $ENV{TZ} = 'UTC';
18 $| = 1; # unbuffer STDOUT
19
20 sub fatal (@) { print STDERR @_; exit 1 }
21 require SVN::Core; # use()-ing this causes segfaults for me... *shrug*
22 require SVN::Ra;
23 require SVN::Delta;
24 if ($SVN::Core::VERSION lt '1.1.0') {
25 fatal "Need SVN::Core 1.1.0 or better (got $SVN::Core::VERSION)\n";
26 }
27 push @Git::SVN::Ra::ISA, 'SVN::Ra';
28 push @SVN::Git::Editor::ISA, 'SVN::Delta::Editor';
29 push @SVN::Git::Fetcher::ISA, 'SVN::Delta::Editor';
30 use Carp qw/croak/;
31 use IO::File qw//;
32 use File::Basename qw/dirname basename/;
33 use File::Path qw/mkpath/;
34 use Getopt::Long qw/:config gnu_getopt no_ignore_case auto_abbrev pass_through/;
35 use IPC::Open3;
36 use Git;
37
38 BEGIN {
39 my $s;
40 foreach (qw/command command_oneline command_noisy command_output_pipe
41 command_input_pipe command_close_pipe/) {
42 $s .= "*SVN::Git::Editor::$_ = *SVN::Git::Fetcher::$_ = ".
43 "*Git::SVN::Migration::$_ = ".
44 "*Git::SVN::Log::$_ = *Git::SVN::$_ = *$_ = *Git::$_; ";
45 }
46 eval $s;
47 }
48
49 my ($SVN);
50
51 my $_optimize_commits = 1 unless $ENV{GIT_SVN_NO_OPTIMIZE_COMMITS};
52 $sha1 = qr/[a-f\d]{40}/;
53 $sha1_short = qr/[a-f\d]{4,40}/;
54 my ($_stdin, $_help, $_edit,
55 $_message, $_file,
56 $_template, $_shared,
57 $_version,
58 $_merge, $_strategy, $_dry_run,
59 $_prefix);
60
61 my %remote_opts = ( 'username=s' => \$Git::SVN::Prompt::_username,
62 'config-dir=s' => \$Git::SVN::Ra::config_dir,
63 'no-auth-cache' => \$Git::SVN::Prompt::_no_auth_cache );
64 my %fc_opts = ( 'follow-parent|follow' => \$Git::SVN::_follow_parent,
65 'authors-file|A=s' => \$_authors,
66 'repack:i' => \$Git::SVN::_repack,
67 'no-metadata' => \$Git::SVN::_no_metadata,
68 'quiet|q' => \$_q,
69 'repack-flags|repack-args|repack-opts=s' =>
70 \$Git::SVN::_repack_flags,
71 %remote_opts );
72
73 my ($_trunk, $_tags, $_branches);
74 my %multi_opts = ( 'trunk|T=s' => \$_trunk,
75 'tags|t=s' => \$_tags,
76 'branches|b=s' => \$_branches );
77 my %init_opts = ( 'template=s' => \$_template, 'shared' => \$_shared );
78 my %cmt_opts = ( 'edit|e' => \$_edit,
79 'rmdir' => \$SVN::Git::Editor::_rmdir,
80 'find-copies-harder' => \$SVN::Git::Editor::_find_copies_harder,
81 'l=i' => \$SVN::Git::Editor::_rename_limit,
82 'copy-similarity|C=i'=> \$SVN::Git::Editor::_cp_similarity
83 );
84
85 my %cmd = (
86 fetch => [ \&cmd_fetch, "Download new revisions from SVN",
87 { 'revision|r=s' => \$_revision, %fc_opts } ],
88 init => [ \&cmd_init, "Initialize a repo for tracking" .
89 " (requires URL argument)",
90 \%init_opts ],
91 dcommit => [ \&cmd_dcommit,
92 'Commit several diffs to merge with upstream',
93 { 'merge|m|M' => \$_merge,
94 'strategy|s=s' => \$_strategy,
95 'dry-run|n' => \$_dry_run,
96 %cmt_opts, %fc_opts } ],
97 'set-tree' => [ \&cmd_set_tree,
98 "Set an SVN repository to a git tree-ish",
99 { 'stdin|' => \$_stdin, %cmt_opts, %fc_opts, } ],
100 'show-ignore' => [ \&cmd_show_ignore, "Show svn:ignore listings",
101 { 'revision|r=i' => \$_revision } ],
102 'multi-init' => [ \&cmd_multi_init,
103 'Initialize multiple trees (like git-svnimport)',
104 { %multi_opts, %init_opts, %remote_opts,
105 'revision|r=i' => \$_revision,
106 'prefix=s' => \$_prefix,
107 } ],
108 'multi-fetch' => [ \&cmd_multi_fetch,
109 'Fetch multiple trees (like git-svnimport)',
110 \%fc_opts ],
111 'migrate' => [ sub { },
112 # no-op, we automatically run this anyways,
113 'Migrate configuration/metadata/layout from
114 previous versions of git-svn',
115 \%remote_opts ],
116 'log' => [ \&Git::SVN::Log::cmd_show_log, 'Show commit logs',
117 { 'limit=i' => \$Git::SVN::Log::limit,
118 'revision|r=s' => \$_revision,
119 'verbose|v' => \$Git::SVN::Log::verbose,
120 'incremental' => \$Git::SVN::Log::incremental,
121 'oneline' => \$Git::SVN::Log::oneline,
122 'show-commit' => \$Git::SVN::Log::show_commit,
123 'non-recursive' => \$Git::SVN::Log::non_recursive,
124 'authors-file|A=s' => \$_authors,
125 'color' => \$Git::SVN::Log::color,
126 'pager=s' => \$Git::SVN::Log::pager,
127 } ],
128 'commit-diff' => [ \&cmd_commit_diff,
129 'Commit a diff between two trees',
130 { 'message|m=s' => \$_message,
131 'file|F=s' => \$_file,
132 'revision|r=s' => \$_revision,
133 %cmt_opts } ],
134 );
135
136 my $cmd;
137 for (my $i = 0; $i < @ARGV; $i++) {
138 if (defined $cmd{$ARGV[$i]}) {
139 $cmd = $ARGV[$i];
140 splice @ARGV, $i, 1;
141 last;
142 }
143 };
144
145 my %opts = %{$cmd{$cmd}->[2]} if (defined $cmd);
146
147 read_repo_config(\%opts);
148 my $rv = GetOptions(%opts, 'help|H|h' => \$_help, 'version|V' => \$_version,
149 'minimize-connections' => \$Git::SVN::Migration::_minimize,
150 'id|i=s' => \$Git::SVN::default_ref_id,
151 'svn-remote|remote|R=s' => \$Git::SVN::default_repo_id);
152 exit 1 if (!$rv && $cmd ne 'log');
153
154 usage(0) if $_help;
155 version() if $_version;
156 usage(1) unless defined $cmd;
157 load_authors() if $_authors;
158 unless ($cmd =~ /^(?:init|multi-init|commit-diff)$/) {
159 Git::SVN::Migration::migration_check();
160 }
161 Git::SVN::init_vars();
162 eval {
163 Git::SVN::verify_remotes_sanity();
164 $cmd{$cmd}->[0]->(@ARGV);
165 };
166 fatal $@ if $@;
167 exit 0;
168
169 ####################### primary functions ######################
170 sub usage {
171 my $exit = shift || 0;
172 my $fd = $exit ? \*STDERR : \*STDOUT;
173 print $fd <<"";
174 git-svn - bidirectional operations between a single Subversion tree and git
175 Usage: $0 <command> [options] [arguments]\n
176
177 print $fd "Available commands:\n" unless $cmd;
178
179 foreach (sort keys %cmd) {
180 next if $cmd && $cmd ne $_;
181 print $fd ' ',pack('A17',$_),$cmd{$_}->[1],"\n";
182 foreach (keys %{$cmd{$_}->[2]}) {
183 # prints out arguments as they should be passed:
184 my $x = s#[:=]s$## ? '<arg>' : s#[:=]i$## ? '<num>' : '';
185 print $fd ' ' x 21, join(', ', map { length $_ > 1 ?
186 "--$_" : "-$_" }
187 split /\|/,$_)," $x\n";
188 }
189 }
190 print $fd <<"";
191 \nGIT_SVN_ID may be set in the environment or via the --id/-i switch to an
192 arbitrary identifier if you're tracking multiple SVN branches/repositories in
193 one git repository and want to keep them separate. See git-svn(1) for more
194 information.
195
196 exit $exit;
197 }
198
199 sub version {
200 print "git-svn version $VERSION (svn $SVN::Core::VERSION)\n";
201 exit 0;
202 }
203
204 sub do_git_init_db {
205 unless (-d $ENV{GIT_DIR}) {
206 my @init_db = ('init');
207 push @init_db, "--template=$_template" if defined $_template;
208 push @init_db, "--shared" if defined $_shared;
209 command_noisy(@init_db);
210 }
211 }
212
213 sub cmd_init {
214 my $url = shift or die "SVN repository location required " .
215 "as a command-line argument\n";
216 if (my $repo_path = shift) {
217 unless (-d $repo_path) {
218 mkpath([$repo_path]);
219 }
220 chdir $repo_path or croak $!;
221 $ENV{GIT_DIR} = $repo_path . "/.git";
222 }
223 do_git_init_db();
224
225 Git::SVN->init($url);
226 }
227
228 sub cmd_fetch {
229 if (@_) {
230 die "Additional fetch arguments are no longer supported.\n",
231 "Use --follow-parent if you have moved/copied directories
232 instead.\n";
233 }
234 my $gs = Git::SVN->new;
235 $gs->fetch(parse_revision_argument());
236 if ($gs->{last_commit} && !verify_ref('refs/heads/master^0')) {
237 command_noisy(qw(update-ref refs/heads/master),
238 $gs->{last_commit});
239 }
240 }
241
242 sub cmd_set_tree {
243 my (@commits) = @_;
244 if ($_stdin || !@commits) {
245 print "Reading from stdin...\n";
246 @commits = ();
247 while (<STDIN>) {
248 if (/\b($sha1_short)\b/o) {
249 unshift @commits, $1;
250 }
251 }
252 }
253 my @revs;
254 foreach my $c (@commits) {
255 my @tmp = command('rev-parse',$c);
256 if (scalar @tmp == 1) {
257 push @revs, $tmp[0];
258 } elsif (scalar @tmp > 1) {
259 push @revs, reverse(command('rev-list',@tmp));
260 } else {
261 fatal "Failed to rev-parse $c\n";
262 }
263 }
264 my $gs = Git::SVN->new;
265 my ($r_last, $cmt_last) = $gs->last_rev_commit;
266 $gs->fetch;
267 if (defined $gs->{last_rev} && $r_last != $gs->{last_rev}) {
268 fatal "There are new revisions that were fetched ",
269 "and need to be merged (or acknowledged) ",
270 "before committing.\nlast rev: $r_last\n",
271 " current: $gs->{last_rev}\n";
272 }
273 $gs->set_tree($_) foreach @revs;
274 print "Done committing ",scalar @revs," revisions to SVN\n";
275 }
276
277 sub cmd_dcommit {
278 my $head = shift;
279 my $gs = Git::SVN->new;
280 $head ||= 'HEAD';
281 my @refs = command(qw/rev-list --no-merges/, $gs->refname."..$head");
282 my $last_rev;
283 foreach my $d (reverse @refs) {
284 if (!verify_ref("$d~1")) {
285 fatal "Commit $d\n",
286 "has no parent commit, and therefore ",
287 "nothing to diff against.\n",
288 "You should be working from a repository ",
289 "originally created by git-svn\n";
290 }
291 unless (defined $last_rev) {
292 (undef, $last_rev, undef) = cmt_metadata("$d~1");
293 unless (defined $last_rev) {
294 fatal "Unable to extract revision information ",
295 "from commit $d~1\n";
296 }
297 }
298 if ($_dry_run) {
299 print "diff-tree $d~1 $d\n";
300 } else {
301 my %ed_opts = ( r => $last_rev,
302 log => get_commit_entry($d)->{log},
303 ra => $gs->ra,
304 tree_a => "$d~1",
305 tree_b => $d,
306 editor_cb => sub {
307 print "Committed r$_[0]\n";
308 $last_rev = $_[0]; },
309 svn_path => $gs->{path} );
310 if (!SVN::Git::Editor->new(\%ed_opts)->apply_diff) {
311 print "No changes\n$d~1 == $d\n";
312 }
313 }
314 }
315 return if $_dry_run;
316 $gs->fetch;
317 # we always want to rebase against the current HEAD, not any
318 # head that was passed to us
319 my @diff = command('diff-tree', 'HEAD', $gs->refname, '--');
320 my @finish;
321 if (@diff) {
322 @finish = qw/rebase/;
323 push @finish, qw/--merge/ if $_merge;
324 push @finish, "--strategy=$_strategy" if $_strategy;
325 print STDERR "W: HEAD and ", $gs->refname, " differ, ",
326 "using @finish:\n", "@diff";
327 } else {
328 print "No changes between current HEAD and ",
329 $gs->refname, "\nResetting to the latest ",
330 $gs->refname, "\n";
331 @finish = qw/reset --mixed/;
332 }
333 command_noisy(@finish, $gs->refname);
334 }
335
336 sub cmd_show_ignore {
337 my $gs = Git::SVN->new;
338 my $r = (defined $_revision ? $_revision : $gs->ra->get_latest_revnum);
339 $gs->traverse_ignore(\*STDOUT, '', $r);
340 }
341
342 sub cmd_multi_init {
343 my $url = shift;
344 unless (defined $_trunk || defined $_branches || defined $_tags) {
345 usage(1);
346 }
347 do_git_init_db();
348 $_prefix = '' unless defined $_prefix;
349 $url =~ s#/+$## if defined $url;
350 if (defined $_trunk) {
351 my $trunk_ref = $_prefix . 'trunk';
352 # try both old-style and new-style lookups:
353 my $gs_trunk = eval { Git::SVN->new($trunk_ref) };
354 unless ($gs_trunk) {
355 my ($trunk_url, $trunk_path) =
356 complete_svn_url($url, $_trunk);
357 $gs_trunk = Git::SVN->init($trunk_url, $trunk_path,
358 undef, $trunk_ref);
359 }
360 }
361 return unless defined $_branches || defined $_tags;
362 my $ra = $url ? Git::SVN::Ra->new($url) : undef;
363 complete_url_ls_init($ra, $_branches, '--branches/-b', $_prefix);
364 complete_url_ls_init($ra, $_tags, '--tags/-t', $_prefix . 'tags/');
365 }
366
367 sub cmd_multi_fetch {
368 my $remotes = Git::SVN::read_all_remotes();
369 foreach my $repo_id (sort keys %$remotes) {
370 my $url = $remotes->{$repo_id}->{url} or next;
371 my $fetch = $remotes->{$repo_id}->{fetch} or next;
372 Git::SVN::fetch_all($repo_id, $url, $fetch);
373 }
374 }
375
376 # this command is special because it requires no metadata
377 sub cmd_commit_diff {
378 my ($ta, $tb, $url) = @_;
379 my $usage = "Usage: $0 commit-diff -r<revision> ".
380 "<tree-ish> <tree-ish> [<URL>]\n";
381 fatal($usage) if (!defined $ta || !defined $tb);
382 my $svn_path;
383 if (!defined $url) {
384 my $gs = eval { Git::SVN->new };
385 if (!$gs) {
386 fatal("Needed URL or usable git-svn --id in ",
387 "the command-line\n", $usage);
388 }
389 $url = $gs->{url};
390 $svn_path = $gs->{path};
391 }
392 unless (defined $_revision) {
393 fatal("-r|--revision is a required argument\n", $usage);
394 }
395 if (defined $_message && defined $_file) {
396 fatal("Both --message/-m and --file/-F specified ",
397 "for the commit message.\n",
398 "I have no idea what you mean\n");
399 }
400 if (defined $_file) {
401 $_message = file_to_s($_file);
402 } else {
403 $_message ||= get_commit_entry($tb)->{log};
404 }
405 my $ra ||= Git::SVN::Ra->new($url);
406 $svn_path ||= $ra->{svn_path};
407 my $r = $_revision;
408 if ($r eq 'HEAD') {
409 $r = $ra->get_latest_revnum;
410 } elsif ($r !~ /^\d+$/) {
411 die "revision argument: $r not understood by git-svn\n";
412 }
413 my %ed_opts = ( r => $r,
414 log => $_message,
415 ra => $ra,
416 tree_a => $ta,
417 tree_b => $tb,
418 editor_cb => sub { print "Committed r$_[0]\n" },
419 svn_path => $svn_path );
420 if (!SVN::Git::Editor->new(\%ed_opts)->apply_diff) {
421 print "No changes\n$ta == $tb\n";
422 }
423 }
424
425 ########################### utility functions #########################
426
427 sub parse_revision_argument {
428 if (!defined $_revision || $_revision eq 'BASE:HEAD') {
429 return (undef, undef);
430 }
431 return ($1, $2) if ($_revision =~ /^(\d+):(\d+)$/);
432 return ($_revision, $_revision) if ($_revision =~ /^\d+$/);
433 return (undef, $1) if ($_revision =~ /^BASE:(\d+)$/);
434 return ($1, undef) if ($_revision =~ /^(\d+):HEAD$/);
435 die "revision argument: $_revision not understood by git-svn\n",
436 "Try using the command-line svn client instead\n";
437 }
438
439 sub complete_svn_url {
440 my ($url, $path) = @_;
441 $path =~ s#/+$##;
442 if ($path !~ m#^[a-z\+]+://#) {
443 if (!defined $url || $url !~ m#^[a-z\+]+://#) {
444 fatal("E: '$path' is not a complete URL ",
445 "and a separate URL is not specified\n");
446 }
447 return ($url, $path);
448 }
449 return ($path, '');
450 }
451
452 sub complete_url_ls_init {
453 my ($ra, $repo_path, $switch, $pfx) = @_;
454 unless ($repo_path) {
455 print STDERR "W: $switch not specified\n";
456 return;
457 }
458 $repo_path =~ s#/+$##;
459 if ($repo_path =~ m#^[a-z\+]+://#) {
460 $ra = Git::SVN::Ra->new($repo_path);
461 $repo_path = '';
462 } else {
463 $repo_path =~ s#^/+##;
464 unless ($ra) {
465 fatal("E: '$repo_path' is not a complete URL ",
466 "and a separate URL is not specified\n");
467 }
468 }
469 my $r = defined $_revision ? $_revision : $ra->get_latest_revnum;
470 my ($dirent, undef, undef) = $ra->get_dir($repo_path, $r);
471 my $url = $ra->{url};
472 my $remote_id;
473 my $remote_path;
474 foreach my $d (sort keys %$dirent) {
475 next if ($dirent->{$d}->kind != $SVN::Node::dir);
476 my $path = "$repo_path/$d";
477 my $ref = "$pfx$d";
478 my $gs = eval { Git::SVN->new($ref) };
479 # don't try to init already existing refs
480 unless ($gs) {
481 print "init $url/$path => $ref\n";
482 $gs = Git::SVN->init($url, $path, undef, $ref);
483 }
484 $remote_id ||= $gs->{repo_id} if $gs;
485 }
486 if (defined $remote_id) {
487 $remote_path = "$ra->{svn_path}/$repo_path/*";
488 $remote_path =~ s#/+#/#g;
489 $remote_path =~ s#^/##g;
490 my ($n) = ($switch =~ /^--(\w+)/);
491 command_noisy('config', "svn-remote.$remote_id.$n",
492 $remote_path);
493 }
494 }
495
496 sub verify_ref {
497 my ($ref) = @_;
498 eval { command_oneline([ 'rev-parse', '--verify', $ref ],
499 { STDERR => 0 }); };
500 }
501
502 sub get_tree_from_treeish {
503 my ($treeish) = @_;
504 # $treeish can be a symbolic ref, too:
505 my $type = command_oneline(qw/cat-file -t/, $treeish);
506 my $expected;
507 while ($type eq 'tag') {
508 ($treeish, $type) = command(qw/cat-file tag/, $treeish);
509 }
510 if ($type eq 'commit') {
511 $expected = (grep /^tree /, command(qw/cat-file commit/,
512 $treeish))[0];
513 ($expected) = ($expected =~ /^tree ($sha1)$/o);
514 die "Unable to get tree from $treeish\n" unless $expected;
515 } elsif ($type eq 'tree') {
516 $expected = $treeish;
517 } else {
518 die "$treeish is a $type, expected tree, tag or commit\n";
519 }
520 return $expected;
521 }
522
523 sub get_commit_entry {
524 my ($treeish) = shift;
525 my %log_entry = ( log => '', tree => get_tree_from_treeish($treeish) );
526 my $commit_editmsg = "$ENV{GIT_DIR}/COMMIT_EDITMSG";
527 my $commit_msg = "$ENV{GIT_DIR}/COMMIT_MSG";
528 open my $log_fh, '>', $commit_editmsg or croak $!;
529
530 my $type = command_oneline(qw/cat-file -t/, $treeish);
531 if ($type eq 'commit' || $type eq 'tag') {
532 my ($msg_fh, $ctx) = command_output_pipe('cat-file',
533 $type, $treeish);
534 my $in_msg = 0;
535 while (<$msg_fh>) {
536 if (!$in_msg) {
537 $in_msg = 1 if (/^\s*$/);
538 } elsif (/^git-svn-id: /) {
539 # skip this for now, we regenerate the
540 # correct one on re-fetch anyways
541 # TODO: set *:merge properties or like...
542 } else {
543 print $log_fh $_ or croak $!;
544 }
545 }
546 command_close_pipe($msg_fh, $ctx);
547 }
548 close $log_fh or croak $!;
549
550 if ($_edit || ($type eq 'tree')) {
551 my $editor = $ENV{VISUAL} || $ENV{EDITOR} || 'vi';
552 # TODO: strip out spaces, comments, like git-commit.sh
553 system($editor, $commit_editmsg);
554 }
555 rename $commit_editmsg, $commit_msg or croak $!;
556 open $log_fh, '<', $commit_msg or croak $!;
557 { local $/; chomp($log_entry{log} = <$log_fh>); }
558 close $log_fh or croak $!;
559 unlink $commit_msg;
560 \%log_entry;
561 }
562
563 sub s_to_file {
564 my ($str, $file, $mode) = @_;
565 open my $fd,'>',$file or croak $!;
566 print $fd $str,"\n" or croak $!;
567 close $fd or croak $!;
568 chmod ($mode &~ umask, $file) if (defined $mode);
569 }
570
571 sub file_to_s {
572 my $file = shift;
573 open my $fd,'<',$file or croak "$!: file: $file\n";
574 local $/;
575 my $ret = <$fd>;
576 close $fd or croak $!;
577 $ret =~ s/\s*$//s;
578 return $ret;
579 }
580
581 # '<svn username> = real-name <email address>' mapping based on git-svnimport:
582 sub load_authors {
583 open my $authors, '<', $_authors or die "Can't open $_authors $!\n";
584 my $log = $cmd eq 'log';
585 while (<$authors>) {
586 chomp;
587 next unless /^(\S+?|\(no author\))\s*=\s*(.+?)\s*<(.+)>\s*$/;
588 my ($user, $name, $email) = ($1, $2, $3);
589 if ($log) {
590 $Git::SVN::Log::rusers{"$name <$email>"} = $user;
591 } else {
592 $users{$user} = [$name, $email];
593 }
594 }
595 close $authors or croak $!;
596 }
597
598 # convert GetOpt::Long specs for use by git-config
599 sub read_repo_config {
600 return unless -d $ENV{GIT_DIR};
601 my $opts = shift;
602 foreach my $o (keys %$opts) {
603 my $v = $opts->{$o};
604 my ($key) = ($o =~ /^([a-z\-]+)/);
605 $key =~ s/-//g;
606 my $arg = 'git-config';
607 $arg .= ' --int' if ($o =~ /[:=]i$/);
608 $arg .= ' --bool' if ($o !~ /[:=][sfi]$/);
609 if (ref $v eq 'ARRAY') {
610 chomp(my @tmp = `$arg --get-all svn.$key`);
611 @$v = @tmp if @tmp;
612 } else {
613 chomp(my $tmp = `$arg --get svn.$key`);
614 if ($tmp && !($arg =~ / --bool/ && $tmp eq 'false')) {
615 $$v = $tmp;
616 }
617 }
618 }
619 }
620
621 sub extract_metadata {
622 my $id = shift or return (undef, undef, undef);
623 my ($url, $rev, $uuid) = ($id =~ /^git-svn-id:\s(\S+?)\@(\d+)
624 \s([a-f\d\-]+)$/x);
625 if (!defined $rev || !$uuid || !$url) {
626 # some of the original repositories I made had
627 # identifiers like this:
628 ($rev, $uuid) = ($id =~/^git-svn-id:\s(\d+)\@([a-f\d\-]+)/);
629 }
630 return ($url, $rev, $uuid);
631 }
632
633 sub cmt_metadata {
634 return extract_metadata((grep(/^git-svn-id: /,
635 command(qw/cat-file commit/, shift)))[-1]);
636 }
637
638 package Git::SVN;
639 use strict;
640 use warnings;
641 use vars qw/$default_repo_id $default_ref_id $_no_metadata $_follow_parent
642 $_repack $_repack_flags/;
643 use Carp qw/croak/;
644 use File::Path qw/mkpath/;
645 use File::Copy qw/copy/;
646 use IPC::Open3;
647
648 my $_repack_nr;
649 # properties that we do not log:
650 my %SKIP_PROP;
651 BEGIN {
652 %SKIP_PROP = map { $_ => 1 } qw/svn:wc:ra_dav:version-url
653 svn:special svn:executable
654 svn:entry:committed-rev
655 svn:entry:last-author
656 svn:entry:uuid
657 svn:entry:committed-date/;
658 }
659
660 my %LOCKFILES;
661 END { unlink keys %LOCKFILES if %LOCKFILES }
662
663 sub fetch_all {
664 my ($repo_id, $url, $fetch) = @_;
665 my @gs;
666 my $ra = Git::SVN::Ra->new($url);
667 my $head = $ra->get_latest_revnum;
668 my $base = $head;
669 foreach my $p (sort keys %$fetch) {
670 my $gs = Git::SVN->new($fetch->{$p}, $repo_id, $p);
671 my $lr = $gs->rev_db_max;
672 if (defined $lr) {
673 $base = $lr if ($lr < $base);
674 }
675 push @gs, $gs;
676 }
677 return if (++$base > $head);
678 $ra->gs_fetch_loop_common($base, $head, @gs);
679 }
680
681 sub read_all_remotes {
682 my $r = {};
683 foreach (grep { s/^svn-remote\.// } command(qw/config -l/)) {
684 if (m!^(.+)\.fetch=\s*(.*)\s*:\s*refs/remotes/(.+)\s*$!) {
685 $r->{$1}->{fetch}->{$2} = $3;
686 } elsif (m!^(.+)\.url=\s*(.*)\s*$!) {
687 $r->{$1}->{url} = $2;
688 }
689 }
690 $r;
691 }
692
693 sub init_vars {
694 if (defined $_repack) {
695 $_repack = 1000 if ($_repack <= 0);
696 $_repack_nr = $_repack;
697 $_repack_flags ||= '-d';
698 }
699 }
700
701 sub verify_remotes_sanity {
702 return unless -d $ENV{GIT_DIR};
703 my %seen;
704 foreach (command(qw/config -l/)) {
705 if (m!^svn-remote\.(?:.+)\.fetch=.*:refs/remotes/(\S+)\s*$!) {
706 if ($seen{$1}) {
707 die "Remote ref refs/remote/$1 is tracked by",
708 "\n \"$_\"\nand\n \"$seen{$1}\"\n",
709 "Please resolve this ambiguity in ",
710 "your git configuration file before ",
711 "continuing\n";
712 }
713 $seen{$1} = $_;
714 }
715 }
716 }
717
718 # we allow more chars than remotes2config.sh...
719 sub sanitize_remote_name {
720 my ($name) = @_;
721 $name =~ tr{A-Za-z0-9:,/+-}{.}c;
722 $name;
723 }
724
725 sub find_existing_remote {
726 my ($url, $remotes) = @_;
727 my $existing;
728 foreach my $repo_id (keys %$remotes) {
729 my $u = $remotes->{$repo_id}->{url} or next;
730 next if $u ne $url;
731 $existing = $repo_id;
732 last;
733 }
734 $existing;
735 }
736
737 sub init_remote_config {
738 my ($self, $url, $no_write) = @_;
739 $url =~ s!/+$!!; # strip trailing slash
740 my $r = read_all_remotes();
741 my $existing = find_existing_remote($url, $r);
742 if ($existing) {
743 print STDERR "Using existing ",
744 "[svn-remote \"$existing\"]\n";
745 $self->{repo_id} = $existing;
746 } else {
747 my $min_url = Git::SVN::Ra->new($url)->minimize_url;
748 $existing = find_existing_remote($min_url, $r);
749 if ($existing) {
750 print STDERR "Using existing ",
751 "[svn-remote \"$existing\"]\n";
752 $self->{repo_id} = $existing;
753 }
754 if ($min_url ne $url) {
755 print STDERR "Using higher level of URL: ",
756 "$url => $min_url\n";
757 my $old_path = $self->{path};
758 $self->{path} = $url;
759 $self->{path} =~ s!^\Q$min_url\E/*!!;
760 if (length $old_path) {
761 $self->{path} .= "/$old_path";
762 }
763 $url = $min_url;
764 }
765 }
766 my $orig_url;
767 if (!$existing) {
768 # verify that we aren't overwriting anything:
769 $orig_url = eval {
770 command_oneline('config', '--get',
771 "svn-remote.$self->{repo_id}.url")
772 };
773 if ($orig_url && ($orig_url ne $url)) {
774 die "svn-remote.$self->{repo_id}.url already set: ",
775 "$orig_url\nwanted to set to: $url\n";
776 }
777 }
778 my ($xrepo_id, $xpath) = find_ref($self->refname);
779 if (defined $xpath) {
780 die "svn-remote.$xrepo_id.fetch already set to track ",
781 "$xpath:refs/remotes/", $self->refname, "\n";
782 }
783 unless ($no_write) {
784 command_noisy('config',
785 "svn-remote.$self->{repo_id}.url", $url);
786 command_noisy('config', '--add',
787 "svn-remote.$self->{repo_id}.fetch",
788 "$self->{path}:".$self->refname);
789 }
790 $self->{url} = $url;
791 }
792
793 sub init {
794 my ($class, $url, $path, $repo_id, $ref_id, $no_write) = @_;
795 my $self = _new($class, $repo_id, $ref_id, $path);
796 if (defined $url) {
797 $self->init_remote_config($url, $no_write);
798 }
799 $self;
800 }
801
802 sub find_ref {
803 my ($ref_id) = @_;
804 foreach (command(qw/config -l/)) {
805 next unless m!^svn-remote\.(.+)\.fetch=
806 \s*(.*)\s*:\s*refs/remotes/(.+)\s*$!x;
807 my ($repo_id, $path, $ref) = ($1, $2, $3);
808 if ($ref eq $ref_id) {
809 $path = '' if ($path =~ m#^\./?#);
810 return ($repo_id, $path);
811 }
812 }
813 (undef, undef, undef);
814 }
815
816 sub new {
817 my ($class, $ref_id, $repo_id, $path) = @_;
818 if (defined $ref_id && !defined $repo_id && !defined $path) {
819 ($repo_id, $path) = find_ref($ref_id);
820 if (!defined $repo_id) {
821 die "Could not find a \"svn-remote.*.fetch\" key ",
822 "in the repository configuration matching: ",
823 "refs/remotes/$ref_id\n";
824 }
825 }
826 my $self = _new($class, $repo_id, $ref_id, $path);
827 if (!defined $self->{path} || !length $self->{path}) {
828 my $fetch = command_oneline('config', '--get',
829 "svn-remote.$repo_id.fetch",
830 ":refs/remotes/$ref_id\$") or
831 die "Failed to read \"svn-remote.$repo_id.fetch\" ",
832 "\":refs/remotes/$ref_id\$\" in config\n";
833 ($self->{path}, undef) = split(/\s*:\s*/, $fetch);
834 }
835 $self->{url} = command_oneline('config', '--get',
836 "svn-remote.$repo_id.url") or
837 die "Failed to read \"svn-remote.$repo_id.url\" in config\n";
838 if (-z $self->{db_path} && ::verify_ref($self->refname.'^0')) {
839 $self->rebuild;
840 }
841 $self;
842 }
843
844 sub refname { "refs/remotes/$_[0]->{ref_id}" }
845
846 sub ra {
847 my ($self) = shift;
848 Git::SVN::Ra->new($self->{url});
849 }
850
851 sub rel_path {
852 my ($self) = @_;
853 my $repos_root = $self->ra->{repos_root};
854 return $self->{path} if ($self->{url} eq $repos_root);
855 my $url = $self->{url} .
856 (length $self->{path} ? "/$self->{path}" : $self->{path});
857 $url =~ s!^\Q$repos_root\E/*!!g;
858 $url;
859 }
860
861 sub traverse_ignore {
862 my ($self, $fh, $path, $r) = @_;
863 $path =~ s#^/+##g;
864 my $ra = $self->ra;
865 my ($dirent, undef, $props) = $ra->get_dir($path, $r);
866 my $p = $path;
867 $p =~ s#^\Q$ra->{svn_path}\E/##;
868 print $fh length $p ? "\n# $p\n" : "\n# /\n";
869 if (my $s = $props->{'svn:ignore'}) {
870 $s =~ s/[\r\n]+/\n/g;
871 chomp $s;
872 if (length $p == 0) {
873 $s =~ s#\n#\n/$p#g;
874 print $fh "/$s\n";
875 } else {
876 $s =~ s#\n#\n/$p/#g;
877 print $fh "/$p/$s\n";
878 }
879 }
880 foreach (sort keys %$dirent) {
881 next if $dirent->{$_}->kind != $SVN::Node::dir;
882 $self->traverse_ignore($fh, "$path/$_", $r);
883 }
884 }
885
886 sub last_rev { ($_[0]->last_rev_commit)[0] }
887 sub last_commit { ($_[0]->last_rev_commit)[1] }
888
889 # returns the newest SVN revision number and newest commit SHA1
890 sub last_rev_commit {
891 my ($self) = @_;
892 if (defined $self->{last_rev} && defined $self->{last_commit}) {
893 return ($self->{last_rev}, $self->{last_commit});
894 }
895 my $c = ::verify_ref($self->refname.'^0');
896 if ($c) {
897 my $rev = (::cmt_metadata($c))[1];
898 if (defined $rev) {
899 ($self->{last_rev}, $self->{last_commit}) = ($rev, $c);
900 return ($rev, $c);
901 }
902 }
903 my $offset = -41; # from tail
904 my $rl;
905 open my $fh, '<', $self->{db_path} or
906 croak "$self->{db_path} not readable: $!\n";
907 sysseek($fh, $offset, 2); # don't care for errors
908 sysread($fh, $rl, 41) == 41 or return (undef, undef);
909 chomp $rl;
910 while (('0' x40) eq $rl && sysseek($fh, 0, 1) != 0) {
911 $offset -= 41;
912 sysseek($fh, $offset, 2); # don't care for errors
913 sysread($fh, $rl, 41) == 41 or return (undef, undef);
914 chomp $rl;
915 }
916 if ($c) {
917 die "$self->{db_path} and ", $self->refname,
918 " inconsistent!:\n$c != $rl\n";
919 }
920 my $rev = sysseek($fh, 0, 1) or croak $!;
921 $rev = ($rev - 41) / 41;
922 close $fh or croak $!;
923 ($self->{last_rev}, $self->{last_commit}) = ($rev, $c);
924 return ($rev, $c);
925 }
926
927 sub get_fetch_range {
928 my ($self, $min, $max) = @_;
929 $max ||= $self->ra->get_latest_revnum;
930 $min ||= $self->rev_db_max;
931 (++$min, $max);
932 }
933
934 sub tmp_index_do {
935 my ($self, $sub) = @_;
936 my $old_index = $ENV{GIT_INDEX_FILE};
937 $ENV{GIT_INDEX_FILE} = $self->{index};
938 my @ret = &$sub;
939 if ($old_index) {
940 $ENV{GIT_INDEX_FILE} = $old_index;
941 } else {
942 delete $ENV{GIT_INDEX_FILE};
943 }
944 wantarray ? @ret : $ret[0];
945 }
946
947 sub assert_index_clean {
948 my ($self, $treeish) = @_;
949
950 $self->tmp_index_do(sub {
951 command_noisy('read-tree', $treeish) unless -e $self->{index};
952 my $x = command_oneline('write-tree');
953 my ($y) = (command(qw/cat-file commit/, $treeish) =~
954 /^tree ($::sha1)/mo);
955 if ($y ne $x) {
956 unlink $self->{index} or croak $!;
957 command_noisy('read-tree', $treeish);
958 }
959 $x = command_oneline('write-tree');
960 if ($y ne $x) {
961 ::fatal "trees ($treeish) $y != $x\n",
962 "Something is seriously wrong...\n";
963 }
964 });
965 }
966
967 sub get_commit_parents {
968 my ($self, $log_entry) = @_;
969 my (%seen, @ret, @tmp);
970 # legacy support for 'set-tree'; this is only used by set_tree_cb:
971 if (my $ip = $self->{inject_parents}) {
972 if (my $commit = delete $ip->{$log_entry->{revision}}) {
973 push @tmp, $commit;
974 }
975 }
976 if (my $cur = ::verify_ref($self->refname.'^0')) {
977 push @tmp, $cur;
978 }
979 push @tmp, $_ foreach (@{$log_entry->{parents}}, @tmp);
980 while (my $p = shift @tmp) {
981 next if $seen{$p};
982 $seen{$p} = 1;
983 push @ret, $p;
984 # MAXPARENT is defined to 16 in commit-tree.c:
985 last if @ret >= 16;
986 }
987 if (@tmp) {
988 die "r$log_entry->{revision}: No room for parents:\n\t",
989 join("\n\t", @tmp), "\n";
990 }
991 @ret;
992 }
993
994 sub full_url {
995 my ($self) = @_;
996 $self->{url} . (length $self->{path} ? '/' . $self->{path} : '');
997 }
998
999 sub do_git_commit {
1000 my ($self, $log_entry) = @_;
1001 my $lr = $self->last_rev;
1002 if (defined $lr && $lr >= $log_entry->{revision}) {
1003 die "Last fetched revision of ", $self->refname,
1004 " was r$lr, but we are about to fetch: ",
1005 "r$log_entry->{revision}!\n";
1006 }
1007 if (my $c = $self->rev_db_get($log_entry->{revision})) {
1008 croak "$log_entry->{revision} = $c already exists! ",
1009 "Why are we refetching it?\n";
1010 }
1011 my $author = $log_entry->{author};
1012 my ($name, $email) = (defined $::users{$author} ? @{$::users{$author}}
1013 : ($author, "$author\@".$self->ra->uuid));
1014 $ENV{GIT_AUTHOR_NAME} = $ENV{GIT_COMMITTER_NAME} = $name;
1015 $ENV{GIT_AUTHOR_EMAIL} = $ENV{GIT_COMMITTER_EMAIL} = $email;
1016 $ENV{GIT_AUTHOR_DATE} = $ENV{GIT_COMMITTER_DATE} = $log_entry->{date};
1017
1018 my $tree = $log_entry->{tree};
1019 if (!defined $tree) {
1020 $tree = $self->tmp_index_do(sub {
1021 command_oneline('write-tree') });
1022 }
1023 die "Tree is not a valid sha1: $tree\n" if $tree !~ /^$::sha1$/o;
1024
1025 my @exec = ('git-commit-tree', $tree);
1026 foreach ($self->get_commit_parents($log_entry)) {
1027 push @exec, '-p', $_;
1028 }
1029 defined(my $pid = open3(my $msg_fh, my $out_fh, '>&STDERR', @exec))
1030 or croak $!;
1031 print $msg_fh $log_entry->{log} or croak $!;
1032 unless ($_no_metadata) {
1033 print $msg_fh "\ngit-svn-id: ", $self->full_url, '@',
1034 $log_entry->{revision}, ' ',
1035 $self->ra->uuid, "\n" or croak $!;
1036 }
1037 $msg_fh->flush == 0 or croak $!;
1038 close $msg_fh or croak $!;
1039 chomp(my $commit = do { local $/; <$out_fh> });
1040 close $out_fh or croak $!;
1041 waitpid $pid, 0;
1042 croak $? if $?;
1043 if ($commit !~ /^$::sha1$/o) {
1044 die "Failed to commit, invalid sha1: $commit\n";
1045 }
1046
1047 $self->rev_db_set($log_entry->{revision}, $commit, 1);
1048
1049 $self->{last_rev} = $log_entry->{revision};
1050 $self->{last_commit} = $commit;
1051 print "r$log_entry->{revision} = $commit ($self->{ref_id})\n";
1052 if (defined $_repack && (--$_repack_nr == 0)) {
1053 $_repack_nr = $_repack;
1054 # repack doesn't use any arguments with spaces in them, does it?
1055 print "Running git repack $_repack_flags ...\n";
1056 command_noisy('repack', split(/\s+/, $_repack_flags));
1057 print "Done repacking\n";
1058 }
1059 return $commit;
1060 }
1061
1062 sub revisions_eq {
1063 my ($self, $r0, $r1) = @_;
1064 return 1 if $r0 == $r1;
1065 my $nr = 0;
1066 $self->ra->get_log([$self->{path}], $r0, $r1,
1067 0, 0, 1, sub { $nr++ });
1068 return 0 if ($nr > 1);
1069 return 1;
1070 }
1071
1072 sub find_parent_branch {
1073 my ($self, $paths, $rev) = @_;
1074 return undef unless $_follow_parent;
1075 unless (defined $paths) {
1076 my $err_handler = $SVN::Error::handler;
1077 $SVN::Error::handler = \&Git::SVN::Ra::skip_unknown_revs;
1078 $self->ra->get_log([$self->{path}], $rev, $rev, 0, 1, 1, sub {
1079 $paths =
1080 Git::SVN::Ra::dup_changed_paths($_[0]) });
1081 $SVN::Error::handler = $err_handler;
1082 }
1083 return undef unless defined $paths;
1084
1085 # look for a parent from another branch:
1086 my @b_path_components = split m#/#, $self->rel_path;
1087 my @a_path_components;
1088 my $i;
1089 while (@b_path_components) {
1090 $i = $paths->{'/'.join('/', @b_path_components)};
1091 last if $i;
1092 unshift(@a_path_components, pop(@b_path_components));
1093 }
1094 goto not_found unless defined $i;
1095 my $branch_from = $i->{copyfrom_path} or goto not_found;
1096 if (@a_path_components) {
1097 print STDERR "branch_from: $branch_from => ";
1098 $branch_from .= '/'.join('/', @a_path_components);
1099 print STDERR $branch_from, "\n";
1100 }
1101 my $r = $i->{copyfrom_rev};
1102 my $repos_root = $self->ra->{repos_root};
1103 my $url = $self->ra->{url};
1104 my $new_url = $repos_root . $branch_from;
1105 print STDERR "Found possible branch point: ",
1106 "$new_url => ", $self->full_url, ", $r\n";
1107 $branch_from =~ s#^/##;
1108 my $remotes = read_all_remotes();
1109 my $gs;
1110 foreach my $repo_id (keys %$remotes) {
1111 my $u = $remotes->{$repo_id}->{url} or next;
1112 next if $url ne $u;
1113 my $fetch = $remotes->{$repo_id}->{fetch};
1114 foreach my $f (keys %$fetch) {
1115 next if $f ne $branch_from;
1116 $gs = Git::SVN->new($fetch->{$f}, $repo_id, $f);
1117 last;
1118 }
1119 last if $gs;
1120 }
1121 unless ($gs) {
1122 my $ref_id = $self->{ref_id};
1123 $ref_id =~ s/\@\d+$//;
1124 $ref_id .= "\@$r";
1125 # just grow a tail if we're not unique enough :x
1126 $ref_id .= '-' while find_ref($ref_id);
1127 print STDERR "Initializing parent: $ref_id\n";
1128 $gs = Git::SVN->init($new_url, '', $ref_id, $ref_id, 1);
1129 }
1130 my ($r0, $parent) = $gs->find_rev_before($r, 1);
1131 if ($_follow_parent && (!defined $r0 || !defined $parent)) {
1132 $gs->fetch(0, $r);
1133 ($r0, $parent) = $gs->last_rev_commit;
1134 }
1135 if (defined $r0 && defined $parent && $gs->revisions_eq($r0, $r)) {
1136 print STDERR "Found branch parent: ($self->{ref_id}) $parent\n";
1137 $self->assert_index_clean($parent);
1138 my $ed;
1139 if ($self->ra->can_do_switch) {
1140 print STDERR "Following parent with do_switch\n";
1141 # do_switch works with svn/trunk >= r22312, but that
1142 # is not included with SVN 1.4.3 (the latest version
1143 # at the moment), so we can't rely on it
1144 $self->{last_commit} = $parent;
1145 $ed = SVN::Git::Fetcher->new($self);
1146 $gs->ra->gs_do_switch($r0, $rev, $gs,
1147 $self->full_url, $ed)
1148 or die "SVN connection failed somewhere...\n";
1149 } else {
1150 print STDERR "Following parent with do_update\n";
1151 $ed = SVN::Git::Fetcher->new($self);
1152 $self->ra->gs_do_update($rev, $rev, $self, $ed)
1153 or die "SVN connection failed somewhere...\n";
1154 }
1155 print STDERR "Successfully followed parent\n";
1156 return $self->make_log_entry($rev, [$parent], $ed);
1157 }
1158 not_found:
1159 print STDERR "Branch parent for path: '/",
1160 $self->rel_path, "' @ r$rev not found:\n";
1161 return undef unless $paths;
1162 print STDERR "Changed paths:\n";
1163 foreach my $x (sort keys %$paths) {
1164 my $p = $paths->{$x};
1165 print STDERR "\t$p->{action}\t$x";
1166 if ($p->{copyfrom_path}) {
1167 print STDERR "(from $p->{copyfrom_path}: ",
1168 "$p->{copyfrom_rev})";
1169 }
1170 print STDERR "\n";
1171 }
1172 print STDERR '-'x72, "\n";
1173 return undef;
1174 }
1175
1176 sub do_fetch {
1177 my ($self, $paths, $rev) = @_;
1178 my $ed;
1179 my ($last_rev, @parents);
1180 if ($self->{last_commit}) {
1181 $ed = SVN::Git::Fetcher->new($self);
1182 $last_rev = $self->{last_rev};
1183 $ed->{c} = $self->{last_commit};
1184 @parents = ($self->{last_commit});
1185 } else {
1186 $last_rev = $rev;
1187 if (my $log_entry = $self->find_parent_branch($paths, $rev)) {
1188 return $log_entry;
1189 }
1190 $ed = SVN::Git::Fetcher->new($self);
1191 }
1192 unless ($self->ra->gs_do_update($last_rev, $rev, $self, $ed)) {
1193 die "SVN connection failed somewhere...\n";
1194 }
1195 $self->make_log_entry($rev, \@parents, $ed);
1196 }
1197
1198 sub get_untracked {
1199 my ($self, $ed) = @_;
1200 my @out;
1201 my $h = $ed->{empty};
1202 foreach (sort keys %$h) {
1203 my $act = $h->{$_} ? '+empty_dir' : '-empty_dir';
1204 push @out, " $act: " . uri_encode($_);
1205 warn "W: $act: $_\n";
1206 }
1207 foreach my $t (qw/dir_prop file_prop/) {
1208 $h = $ed->{$t} or next;
1209 foreach my $path (sort keys %$h) {
1210 my $ppath = $path eq '' ? '.' : $path;
1211 foreach my $prop (sort keys %{$h->{$path}}) {
1212 next if $SKIP_PROP{$prop};
1213 my $v = $h->{$path}->{$prop};
1214 my $t_ppath_prop = "$t: " .
1215 uri_encode($ppath) . ' ' .
1216 uri_encode($prop);
1217 if (defined $v) {
1218 push @out, " +$t_ppath_prop " .
1219 uri_encode($v);
1220 } else {
1221 push @out, " -$t_ppath_prop";
1222 }
1223 }
1224 }
1225 }
1226 foreach my $t (qw/absent_file absent_directory/) {
1227 $h = $ed->{$t} or next;
1228 foreach my $parent (sort keys %$h) {
1229 foreach my $path (sort @{$h->{$parent}}) {
1230 push @out, " $t: " .
1231 uri_encode("$parent/$path");
1232 warn "W: $t: $parent/$path ",
1233 "Insufficient permissions?\n";
1234 }
1235 }
1236 }
1237 \@out;
1238 }
1239
1240 sub parse_svn_date {
1241 my $date = shift || return '+0000 1970-01-01 00:00:00';
1242 my ($Y,$m,$d,$H,$M,$S) = ($date =~ /^(\d{4})\-(\d\d)\-(\d\d)T
1243 (\d\d)\:(\d\d)\:(\d\d).\d+Z$/x) or
1244 croak "Unable to parse date: $date\n";
1245 "+0000 $Y-$m-$d $H:$M:$S";
1246 }
1247
1248 sub check_author {
1249 my ($author) = @_;
1250 if (!defined $author || length $author == 0) {
1251 $author = '(no author)';
1252 }
1253 if (defined $::_authors && ! defined $::users{$author}) {
1254 die "Author: $author not defined in $::_authors file\n";
1255 }
1256 $author;
1257 }
1258
1259 sub make_log_entry {
1260 my ($self, $rev, $parents, $ed) = @_;
1261 my $untracked = $self->get_untracked($ed);
1262
1263 open my $un, '>>', "$self->{dir}/unhandled.log" or croak $!;
1264 print $un "r$rev\n" or croak $!;
1265 print $un $_, "\n" foreach @$untracked;
1266 my %log_entry = ( parents => $parents || [], revision => $rev,
1267 log => '');
1268 my $rp = $self->ra->rev_proplist($rev);
1269 foreach (sort keys %$rp) {
1270 my $v = $rp->{$_};
1271 if (/^svn:(author|date|log)$/) {
1272 $log_entry{$1} = $v;
1273 } else {
1274 print $un " rev_prop: ", uri_encode($_), ' ',
1275 uri_encode($v), "\n";
1276 }
1277 }
1278 close $un or croak $!;
1279
1280 $log_entry{date} = parse_svn_date($log_entry{date});
1281 $log_entry{author} = check_author($log_entry{author});
1282 $log_entry{log} .= "\n";
1283 \%log_entry;
1284 }
1285
1286 sub fetch {
1287 my ($self, $min_rev, $max_rev, @parents) = @_;
1288 my ($last_rev, $last_commit) = $self->last_rev_commit;
1289 my ($base, $head) = $self->get_fetch_range($min_rev, $max_rev);
1290 return if ($base > $head);
1291 $self->ra->gs_fetch_loop_common($base, $head, $self);
1292 }
1293
1294 sub set_tree_cb {
1295 my ($self, $log_entry, $tree, $rev, $date, $author) = @_;
1296 # TODO: enable and test optimized commits:
1297 if (0 && $rev == ($self->{last_rev} + 1)) {
1298 $log_entry->{revision} = $rev;
1299 $log_entry->{author} = $author;
1300 $self->do_git_commit($log_entry, "$rev=$tree");
1301 } else {
1302 $self->{inject_parents} = { $rev => $tree };
1303 $self->fetch(undef, undef);
1304 }
1305 }
1306
1307 sub set_tree {
1308 my ($self, $tree) = (shift, shift);
1309 my $log_entry = ::get_commit_entry($tree);
1310 unless ($self->{last_rev}) {
1311 fatal("Must have an existing revision to commit\n");
1312 }
1313 my %ed_opts = ( r => $self->{last_rev},
1314 log => $log_entry->{log},
1315 ra => $self->ra,
1316 tree_a => $self->{last_commit},
1317 tree_b => $tree,
1318 editor_cb => sub {
1319 $self->set_tree_cb($log_entry, $tree, @_) },
1320 svn_path => $self->{path} );
1321 if (!SVN::Git::Editor->new(\%ed_opts)->apply_diff) {
1322 print "No changes\nr$self->{last_rev} = $tree\n";
1323 }
1324 }
1325
1326 sub rebuild {
1327 my ($self) = @_;
1328 print "Rebuilding $self->{db_path} ...\n";
1329 my ($rev_list, $ctx) = command_output_pipe("rev-list", $self->refname);
1330 my $latest;
1331 my $full_url = $self->full_url;
1332 my $svn_uuid;
1333 while (<$rev_list>) {
1334 chomp;
1335 my $c = $_;
1336 die "Non-SHA1: $c\n" unless $c =~ /^$::sha1$/o;
1337 my ($url, $rev, $uuid) = ::cmt_metadata($c);
1338
1339 # ignore merges (from set-tree)
1340 next if (!defined $rev || !$uuid);
1341
1342 # if we merged or otherwise started elsewhere, this is
1343 # how we break out of it
1344 if ((defined $svn_uuid && ($uuid ne $svn_uuid)) ||
1345 ($full_url && $url && ($url ne $full_url))) {
1346 next;
1347 }
1348 $latest ||= $rev;
1349 $svn_uuid ||= $uuid;
1350
1351 $self->rev_db_set($rev, $c);
1352 print "r$rev = $c\n";
1353 }
1354 command_close_pipe($rev_list, $ctx);
1355 print "Done rebuilding $self->{db_path}\n";
1356 }
1357
1358 # rev_db:
1359 # Tie::File seems to be prone to offset errors if revisions get sparse,
1360 # it's not that fast, either. Tie::File is also not in Perl 5.6. So
1361 # one of my favorite modules is out :< Next up would be one of the DBM
1362 # modules, but I'm not sure which is most portable... So I'll just
1363 # go with something that's plain-text, but still capable of
1364 # being randomly accessed. So here's my ultra-simple fixed-width
1365 # database. All records are 40 characters + "\n", so it's easy to seek
1366 # to a revision: (41 * rev) is the byte offset.
1367 # A record of 40 0s denotes an empty revision.
1368 # And yes, it's still pretty fast (faster than Tie::File).
1369 # These files are disposable unless --no-metadata is set
1370
1371 sub rev_db_set {
1372 my ($self, $rev, $commit, $update_ref) = @_;
1373 length $commit == 40 or croak "arg3 must be a full SHA1 hexsum\n";
1374 my ($db, $db_lock) = ($self->{db_path}, "$self->{db_path}.lock");
1375 my $sig;
1376 if ($update_ref) {
1377 $SIG{INT} = $SIG{HUP} = $SIG{TERM} = $SIG{ALRM} = $SIG{PIPE} =
1378 $SIG{USR1} = $SIG{USR2} = sub { $sig = $_[0] };
1379 }
1380 $LOCKFILES{$db_lock} = 1;
1381 if ($_no_metadata) {
1382 copy($db, $db_lock) or die "rev_db_set(@_): ",
1383 "Failed to copy: ",
1384 "$db => $db_lock ($!)\n";
1385 } else {
1386 rename $db, $db_lock or die "rev_db_set(@_): ",
1387 "Failed to rename: ",
1388 "$db => $db_lock ($!)\n";
1389 }
1390 open my $fh, '+<', $db_lock or croak $!;
1391 my $offset = $rev * 41;
1392 # assume that append is the common case:
1393 seek $fh, 0, 2 or croak $!;
1394 my $pos = tell $fh;
1395 if ($pos < $offset) {
1396 for (1 .. (($offset - $pos) / 41)) {
1397 print $fh (('0' x 40),"\n") or croak $!;
1398 }
1399 }
1400 seek $fh, $offset, 0 or croak $!;
1401 print $fh $commit,"\n" or croak $!;
1402 close $fh or croak $!;
1403 if ($update_ref) {
1404 command_noisy('update-ref', '-m', "r$rev",
1405 $self->refname, $commit);
1406 }
1407 rename $db_lock, $db or die "rev_db_set(@_): ", "Failed to rename: ",
1408 "$db_lock => $db ($!)\n";
1409 delete $LOCKFILES{$db_lock};
1410 if ($update_ref) {
1411 $SIG{INT} = $SIG{HUP} = $SIG{TERM} = $SIG{ALRM} = $SIG{PIPE} =
1412 $SIG{USR1} = $SIG{USR2} = 'DEFAULT';
1413 kill $sig, $$ if defined $sig;
1414 }
1415 }
1416
1417 sub rev_db_max {
1418 my ($self) = @_;
1419 my @stat = stat $self->{db_path} or
1420 die "Couldn't stat $self->{db_path}: $!\n";
1421 ($stat[7] % 41) == 0 or
1422 die "$self->{db_path} inconsistent size:$stat[7]\n";
1423 my $max = $stat[7] / 41;
1424 (($max > 0) ? $max - 1 : 0);
1425 }
1426
1427 sub rev_db_get {
1428 my ($self, $rev) = @_;
1429 my $ret;
1430 my $offset = $rev * 41;
1431 open my $fh, '<', $self->{db_path} or croak $!;
1432 if (sysseek($fh, $offset, 0) == $offset) {
1433 my $read = sysread($fh, $ret, 40);
1434 $ret = undef if ($read != 40 || $ret eq ('0'x40));
1435 }
1436 close $fh or croak $!;
1437 $ret;
1438 }
1439
1440 sub find_rev_before {
1441 my ($self, $rev, $eq_ok) = @_;
1442 --$rev unless $eq_ok;
1443 while ($rev > 0) {
1444 if (my $c = $self->rev_db_get($rev)) {
1445 return ($rev, $c);
1446 }
1447 --$rev;
1448 }
1449 return (undef, undef);
1450 }
1451
1452 sub _new {
1453 my ($class, $repo_id, $ref_id, $path) = @_;
1454 unless (defined $repo_id && length $repo_id) {
1455 $repo_id = $Git::SVN::default_repo_id;
1456 }
1457 unless (defined $ref_id && length $ref_id) {
1458 $_[2] = $ref_id = $Git::SVN::default_ref_id;
1459 }
1460 $_[1] = $repo_id = sanitize_remote_name($repo_id);
1461 my $dir = "$ENV{GIT_DIR}/svn/$ref_id";
1462 $_[3] = $path = '' unless (defined $path);
1463 mkpath([$dir]);
1464 unless (-f "$dir/.rev_db") {
1465 open my $fh, '>>', "$dir/.rev_db" or croak $!;
1466 close $fh or croak $!;
1467 }
1468 bless { ref_id => $ref_id, dir => $dir, index => "$dir/index",
1469 path => $path,
1470 db_path => "$dir/.rev_db", repo_id => $repo_id }, $class;
1471 }
1472
1473 sub uri_encode {
1474 my ($f) = @_;
1475 $f =~ s#([^a-zA-Z0-9\*!\:_\./\-])#uc sprintf("%%%02x",ord($1))#eg;
1476 $f
1477 }
1478
1479 package Git::SVN::Prompt;
1480 use strict;
1481 use warnings;
1482 require SVN::Core;
1483 use vars qw/$_no_auth_cache $_username/;
1484
1485 sub simple {
1486 my ($cred, $realm, $default_username, $may_save, $pool) = @_;
1487 $may_save = undef if $_no_auth_cache;
1488 $default_username = $_username if defined $_username;
1489 if (defined $default_username && length $default_username) {
1490 if (defined $realm && length $realm) {
1491 print STDERR "Authentication realm: $realm\n";
1492 STDERR->flush;
1493 }
1494 $cred->username($default_username);
1495 } else {
1496 username($cred, $realm, $may_save, $pool);
1497 }
1498 $cred->password(_read_password("Password for '" .
1499 $cred->username . "': ", $realm));
1500 $cred->may_save($may_save);
1501 $SVN::_Core::SVN_NO_ERROR;
1502 }
1503
1504 sub ssl_server_trust {
1505 my ($cred, $realm, $failures, $cert_info, $may_save, $pool) = @_;
1506 $may_save = undef if $_no_auth_cache;
1507 print STDERR "Error validating server certificate for '$realm':\n";
1508 if ($failures & $SVN::Auth::SSL::UNKNOWNCA) {
1509 print STDERR " - The certificate is not issued by a trusted ",
1510 "authority. Use the\n",
1511 " fingerprint to validate the certificate manually!\n";
1512 }
1513 if ($failures & $SVN::Auth::SSL::CNMISMATCH) {
1514 print STDERR " - The certificate hostname does not match.\n";
1515 }
1516 if ($failures & $SVN::Auth::SSL::NOTYETVALID) {
1517 print STDERR " - The certificate is not yet valid.\n";
1518 }
1519 if ($failures & $SVN::Auth::SSL::EXPIRED) {
1520 print STDERR " - The certificate has expired.\n";
1521 }
1522 if ($failures & $SVN::Auth::SSL::OTHER) {
1523 print STDERR " - The certificate has an unknown error.\n";
1524 }
1525 printf STDERR
1526 "Certificate information:\n".
1527 " - Hostname: %s\n".
1528 " - Valid: from %s until %s\n".
1529 " - Issuer: %s\n".
1530 " - Fingerprint: %s\n",
1531 map $cert_info->$_, qw(hostname valid_from valid_until
1532 issuer_dname fingerprint);
1533 my $choice;
1534 prompt:
1535 print STDERR $may_save ?
1536 "(R)eject, accept (t)emporarily or accept (p)ermanently? " :
1537 "(R)eject or accept (t)emporarily? ";
1538 STDERR->flush;
1539 $choice = lc(substr(<STDIN> || 'R', 0, 1));
1540 if ($choice =~ /^t$/i) {
1541 $cred->may_save(undef);
1542 } elsif ($choice =~ /^r$/i) {
1543 return -1;
1544 } elsif ($may_save && $choice =~ /^p$/i) {
1545 $cred->may_save($may_save);
1546 } else {
1547 goto prompt;
1548 }
1549 $cred->accepted_failures($failures);
1550 $SVN::_Core::SVN_NO_ERROR;
1551 }
1552
1553 sub ssl_client_cert {
1554 my ($cred, $realm, $may_save, $pool) = @_;
1555 $may_save = undef if $_no_auth_cache;
1556 print STDERR "Client certificate filename: ";
1557 STDERR->flush;
1558 chomp(my $filename = <STDIN>);
1559 $cred->cert_file($filename);
1560 $cred->may_save($may_save);
1561 $SVN::_Core::SVN_NO_ERROR;
1562 }
1563
1564 sub ssl_client_cert_pw {
1565 my ($cred, $realm, $may_save, $pool) = @_;
1566 $may_save = undef if $_no_auth_cache;
1567 $cred->password(_read_password("Password: ", $realm));
1568 $cred->may_save($may_save);
1569 $SVN::_Core::SVN_NO_ERROR;
1570 }
1571
1572 sub username {
1573 my ($cred, $realm, $may_save, $pool) = @_;
1574 $may_save = undef if $_no_auth_cache;
1575 if (defined $realm && length $realm) {
1576 print STDERR "Authentication realm: $realm\n";
1577 }
1578 my $username;
1579 if (defined $_username) {
1580 $username = $_username;
1581 } else {
1582 print STDERR "Username: ";
1583 STDERR->flush;
1584 chomp($username = <STDIN>);
1585 }
1586 $cred->username($username);
1587 $cred->may_save($may_save);
1588 $SVN::_Core::SVN_NO_ERROR;
1589 }
1590
1591 sub _read_password {
1592 my ($prompt, $realm) = @_;
1593 print STDERR $prompt;
1594 STDERR->flush;
1595 require Term::ReadKey;
1596 Term::ReadKey::ReadMode('noecho');
1597 my $password = '';
1598 while (defined(my $key = Term::ReadKey::ReadKey(0))) {
1599 last if $key =~ /[\012\015]/; # \n\r
1600 $password .= $key;
1601 }
1602 Term::ReadKey::ReadMode('restore');
1603 print STDERR "\n";
1604 STDERR->flush;
1605 $password;
1606 }
1607
1608 package main;
1609
1610 {
1611 my $kill_stupid_warnings = $SVN::Node::none.$SVN::Node::file.
1612 $SVN::Node::dir.$SVN::Node::unknown.
1613 $SVN::Node::none.$SVN::Node::file.
1614 $SVN::Node::dir.$SVN::Node::unknown.
1615 $SVN::Auth::SSL::CNMISMATCH.
1616 $SVN::Auth::SSL::NOTYETVALID.
1617 $SVN::Auth::SSL::EXPIRED.
1618 $SVN::Auth::SSL::UNKNOWNCA.
1619 $SVN::Auth::SSL::OTHER;
1620 }
1621
1622 package SVN::Git::Fetcher;
1623 use vars qw/@ISA/;
1624 use strict;
1625 use warnings;
1626 use Carp qw/croak/;
1627 use IO::File qw//;
1628 use Digest::MD5;
1629
1630 # file baton members: path, mode_a, mode_b, pool, fh, blob, base
1631 sub new {
1632 my ($class, $git_svn) = @_;
1633 my $self = SVN::Delta::Editor->new;
1634 bless $self, $class;
1635 $self->{c} = $git_svn->{last_commit} if exists $git_svn->{last_commit};
1636 $self->{empty} = {};
1637 $self->{dir_prop} = {};
1638 $self->{file_prop} = {};
1639 $self->{absent_dir} = {};
1640 $self->{absent_file} = {};
1641 $self->{gii} = $git_svn->tmp_index_do(sub { Git::IndexInfo->new });
1642 $self;
1643 }
1644
1645 sub set_path_strip {
1646 my ($self, $path) = @_;
1647 $self->{path_strip} = qr/^\Q$path\E\/?/;
1648 }
1649
1650 sub open_root {
1651 { path => '' };
1652 }
1653
1654 sub open_directory {
1655 my ($self, $path, $pb, $rev) = @_;
1656 { path => $path };
1657 }
1658
1659 sub git_path {
1660 my ($self, $path) = @_;
1661 if ($self->{path_strip}) {
1662 $path =~ s!$self->{path_strip}!! or
1663 die "Failed to strip path '$path' ($self->{path_strip})\n";
1664 }
1665 $path;
1666 }
1667
1668 sub delete_entry {
1669 my ($self, $path, $rev, $pb) = @_;
1670
1671 my $gpath = $self->git_path($path);
1672 return undef if ($gpath eq '');
1673
1674 # remove entire directories.
1675 if (command('ls-tree', $self->{c}, '--', $gpath) =~ /^040000 tree/) {
1676 my ($ls, $ctx) = command_output_pipe(qw/ls-tree
1677 -r --name-only -z/,
1678 $self->{c}, '--', $gpath);
1679 local $/ = "\0";
1680 while (<$ls>) {
1681 chomp;
1682 $self->{gii}->remove($_);
1683 print "\tD\t$_\n" unless $self->{q};
1684 }
1685 print "\tD\t$gpath/\n" unless $self->{q};
1686 command_close_pipe($ls, $ctx);
1687 $self->{empty}->{$path} = 0
1688 } else {
1689 $self->{gii}->remove($gpath);
1690 print "\tD\t$gpath\n" unless $self->{q};
1691 }
1692 undef;
1693 }
1694
1695 sub open_file {
1696 my ($self, $path, $pb, $rev) = @_;
1697 my $gpath = $self->git_path($path);
1698 my ($mode, $blob) = (command('ls-tree', $self->{c}, '--', $gpath)
1699 =~ /^(\d{6}) blob ([a-f\d]{40})\t/);
1700 unless (defined $mode && defined $blob) {
1701 die "$path was not found in commit $self->{c} (r$rev)\n";
1702 }
1703 { path => $path, mode_a => $mode, mode_b => $mode, blob => $blob,
1704 pool => SVN::Pool->new, action => 'M' };
1705 }
1706
1707 sub add_file {
1708 my ($self, $path, $pb, $cp_path, $cp_rev) = @_;
1709 my ($dir, $file) = ($path =~ m#^(.*?)/?([^/]+)$#);
1710 delete $self->{empty}->{$dir};
1711 { path => $path, mode_a => 100644, mode_b => 100644,
1712 pool => SVN::Pool->new, action => 'A' };
1713 }
1714
1715 sub add_directory {
1716 my ($self, $path, $cp_path, $cp_rev) = @_;
1717 my ($dir, $file) = ($path =~ m#^(.*?)/?([^/]+)$#);
1718 delete $self->{empty}->{$dir};
1719 $self->{empty}->{$path} = 1;
1720 { path => $path };
1721 }
1722
1723 sub change_dir_prop {
1724 my ($self, $db, $prop, $value) = @_;
1725 $self->{dir_prop}->{$db->{path}} ||= {};
1726 $self->{dir_prop}->{$db->{path}}->{$prop} = $value;
1727 undef;
1728 }
1729
1730 sub absent_directory {
1731 my ($self, $path, $pb) = @_;
1732 $self->{absent_dir}->{$pb->{path}} ||= [];
1733 push @{$self->{absent_dir}->{$pb->{path}}}, $path;
1734 undef;
1735 }
1736
1737 sub absent_file {
1738 my ($self, $path, $pb) = @_;
1739 $self->{absent_file}->{$pb->{path}} ||= [];
1740 push @{$self->{absent_file}->{$pb->{path}}}, $path;
1741 undef;
1742 }
1743
1744 sub change_file_prop {
1745 my ($self, $fb, $prop, $value) = @_;
1746 if ($prop eq 'svn:executable') {
1747 if ($fb->{mode_b} != 120000) {
1748 $fb->{mode_b} = defined $value ? 100755 : 100644;
1749 }
1750 } elsif ($prop eq 'svn:special') {
1751 $fb->{mode_b} = defined $value ? 120000 : 100644;
1752 } else {
1753 $self->{file_prop}->{$fb->{path}} ||= {};
1754 $self->{file_prop}->{$fb->{path}}->{$prop} = $value;
1755 }
1756 undef;
1757 }
1758
1759 sub apply_textdelta {
1760 my ($self, $fb, $exp) = @_;
1761 my $fh = IO::File->new_tmpfile;
1762 $fh->autoflush(1);
1763 # $fh gets auto-closed() by SVN::TxDelta::apply(),
1764 # (but $base does not,) so dup() it for reading in close_file
1765 open my $dup, '<&', $fh or croak $!;
1766 my $base = IO::File->new_tmpfile;
1767 $base->autoflush(1);
1768 if ($fb->{blob}) {
1769 defined (my $pid = fork) or croak $!;
1770 if (!$pid) {
1771 open STDOUT, '>&', $base or croak $!;
1772 print STDOUT 'link ' if ($fb->{mode_a} == 120000);
1773 exec qw/git-cat-file blob/, $fb->{blob} or croak $!;
1774 }
1775 waitpid $pid, 0;
1776 croak $? if $?;
1777
1778 if (defined $exp) {
1779 seek $base, 0, 0 or croak $!;
1780 my $md5 = Digest::MD5->new;
1781 $md5->addfile($base);
1782 my $got = $md5->hexdigest;
1783 die "Checksum mismatch: $fb->{path} $fb->{blob}\n",
1784 "expected: $exp\n",
1785 " got: $got\n" if ($got ne $exp);
1786 }
1787 }
1788 seek $base, 0, 0 or croak $!;
1789 $fb->{fh} = $dup;
1790 $fb->{base} = $base;
1791 [ SVN::TxDelta::apply($base, $fh, undef, $fb->{path}, $fb->{pool}) ];
1792 }
1793
1794 sub close_file {
1795 my ($self, $fb, $exp) = @_;
1796 my $hash;
1797 my $path = $self->git_path($fb->{path});
1798 if (my $fh = $fb->{fh}) {
1799 seek($fh, 0, 0) or croak $!;
1800 my $md5 = Digest::MD5->new;
1801 $md5->addfile($fh);
1802 my $got = $md5->hexdigest;
1803 die "Checksum mismatch: $path\n",
1804 "expected: $exp\n got: $got\n" if ($got ne $exp);
1805 seek($fh, 0, 0) or croak $!;
1806 if ($fb->{mode_b} == 120000) {
1807 read($fh, my $buf, 5) == 5 or croak $!;
1808 $buf eq 'link ' or die "$path has mode 120000",
1809 "but is not a link\n";
1810 }
1811 defined(my $pid = open my $out,'-|') or die "Can't fork: $!\n";
1812 if (!$pid) {
1813 open STDIN, '<&', $fh or croak $!;
1814 exec qw/git-hash-object -w --stdin/ or croak $!;
1815 }
1816 chomp($hash = do { local $/; <$out> });
1817 close $out or croak $!;
1818 close $fh or croak $!;
1819 $hash =~ /^[a-f\d]{40}$/ or die "not a sha1: $hash\n";
1820 close $fb->{base} or croak $!;
1821 } else {
1822 $hash = $fb->{blob} or die "no blob information\n";
1823 }
1824 $fb->{pool}->clear;
1825 $self->{gii}->update($fb->{mode_b}, $hash, $path) or croak $!;
1826 print "\t$fb->{action}\t$path\n" if $fb->{action} && ! $self->{q};
1827 undef;
1828 }
1829
1830 sub abort_edit {
1831 my $self = shift;
1832 $self->{nr} = $self->{gii}->{nr};
1833 delete $self->{gii};
1834 $self->SUPER::abort_edit(@_);
1835 }
1836
1837 sub close_edit {
1838 my $self = shift;
1839 $self->{git_commit_ok} = 1;
1840 $self->{nr} = $self->{gii}->{nr};
1841 delete $self->{gii};
1842 $self->SUPER::close_edit(@_);
1843 }
1844
1845 package SVN::Git::Editor;
1846 use vars qw/@ISA $_rmdir $_cp_similarity $_find_copies_harder $_rename_limit/;
1847 use strict;
1848 use warnings;
1849 use Carp qw/croak/;
1850 use IO::File;
1851 use Digest::MD5;
1852
1853 sub new {
1854 my ($class, $opts) = @_;
1855 foreach (qw/svn_path r ra tree_a tree_b log editor_cb/) {
1856 die "$_ required!\n" unless (defined $opts->{$_});
1857 }
1858
1859 my $pool = SVN::Pool->new;
1860 my $mods = generate_diff($opts->{tree_a}, $opts->{tree_b});
1861 my $types = check_diff_paths($opts->{ra}, $opts->{svn_path},
1862 $opts->{r}, $mods);
1863
1864 # $opts->{ra} functions should not be used after this:
1865 my @ce = $opts->{ra}->get_commit_editor($opts->{log},
1866 $opts->{editor_cb}, $pool);
1867 my $self = SVN::Delta::Editor->new(@ce, $pool);
1868 bless $self, $class;
1869 foreach (qw/svn_path r tree_a tree_b/) {
1870 $self->{$_} = $opts->{$_};
1871 }
1872 $self->{url} = $opts->{ra}->{url};
1873 $self->{mods} = $mods;
1874 $self->{types} = $types;
1875 $self->{pool} = $pool;
1876 $self->{bat} = { '' => $self->open_root($self->{r}, $self->{pool}) };
1877 $self->{rm} = { };
1878 $self->{path_prefix} = length $self->{svn_path} ?
1879 "$self->{svn_path}/" : '';
1880 return $self;
1881 }
1882
1883 sub generate_diff {
1884 my ($tree_a, $tree_b) = @_;
1885 my @diff_tree = qw(diff-tree -z -r);
1886 if ($_cp_similarity) {
1887 push @diff_tree, "-C$_cp_similarity";
1888 } else {
1889 push @diff_tree, '-C';
1890 }
1891 push @diff_tree, '--find-copies-harder' if $_find_copies_harder;
1892 push @diff_tree, "-l$_rename_limit" if defined $_rename_limit;
1893 push @diff_tree, $tree_a, $tree_b;
1894 my ($diff_fh, $ctx) = command_output_pipe(@diff_tree);
1895 local $/ = "\0";
1896 my $state = 'meta';
1897 my @mods;
1898 while (<$diff_fh>) {
1899 chomp $_; # this gets rid of the trailing "\0"
1900 if ($state eq 'meta' && /^:(\d{6})\s(\d{6})\s
1901 $::sha1\s($::sha1)\s
1902 ([MTCRAD])\d*$/xo) {
1903 push @mods, { mode_a => $1, mode_b => $2,
1904 sha1_b => $3, chg => $4 };
1905 if ($4 =~ /^(?:C|R)$/) {
1906 $state = 'file_a';
1907 } else {
1908 $state = 'file_b';
1909 }
1910 } elsif ($state eq 'file_a') {
1911 my $x = $mods[$#mods] or croak "Empty array\n";
1912 if ($x->{chg} !~ /^(?:C|R)$/) {
1913 croak "Error parsing $_, $x->{chg}\n";
1914 }
1915 $x->{file_a} = $_;
1916 $state = 'file_b';
1917 } elsif ($state eq 'file_b') {
1918 my $x = $mods[$#mods] or croak "Empty array\n";
1919 if (exists $x->{file_a} && $x->{chg} !~ /^(?:C|R)$/) {
1920 croak "Error parsing $_, $x->{chg}\n";
1921 }
1922 if (!exists $x->{file_a} && $x->{chg} =~ /^(?:C|R)$/) {
1923 croak "Error parsing $_, $x->{chg}\n";
1924 }
1925 $x->{file_b} = $_;
1926 $state = 'meta';
1927 } else {
1928 croak "Error parsing $_\n";
1929 }
1930 }
1931 command_close_pipe($diff_fh, $ctx);
1932 \@mods;
1933 }
1934
1935 sub check_diff_paths {
1936 my ($ra, $pfx, $rev, $mods) = @_;
1937 my %types;
1938 $pfx .= '/' if length $pfx;
1939
1940 sub type_diff_paths {
1941 my ($ra, $types, $path, $rev) = @_;
1942 my @p = split m#/+#, $path;
1943 my $c = shift @p;
1944 unless (defined $types->{$c}) {
1945 $types->{$c} = $ra->check_path($c, $rev);
1946 }
1947 while (@p) {
1948 $c .= '/' . shift @p;
1949 next if defined $types->{$c};
1950 $types->{$c} = $ra->check_path($c, $rev);
1951 }
1952 }
1953
1954 foreach my $m (@$mods) {
1955 foreach my $f (qw/file_a file_b/) {
1956 next unless defined $m->{$f};
1957 my ($dir) = ($m->{$f} =~ m#^(.*?)/?(?:[^/]+)$#);
1958 if (length $pfx.$dir && ! defined $types{$dir}) {
1959 type_diff_paths($ra, \%types, $pfx.$dir, $rev);
1960 }
1961 }
1962 }
1963 \%types;
1964 }
1965
1966 sub split_path {
1967 return ($_[0] =~ m#^(.*?)/?([^/]+)$#);
1968 }
1969
1970 sub repo_path {
1971 my ($self, $path) = @_;
1972 $self->{path_prefix}.(defined $path ? $path : '');
1973 }
1974
1975 sub url_path {
1976 my ($self, $path) = @_;
1977 $self->{url} . '/' . $self->repo_path($path);
1978 }
1979
1980 sub rmdirs {
1981 my ($self) = @_;
1982 my $rm = $self->{rm};
1983 delete $rm->{''}; # we never delete the url we're tracking
1984 return unless %$rm;
1985
1986 foreach (keys %$rm) {
1987 my @d = split m#/#, $_;
1988 my $c = shift @d;
1989 $rm->{$c} = 1;
1990 while (@d) {
1991 $c .= '/' . shift @d;
1992 $rm->{$c} = 1;
1993 }
1994 }
1995 delete $rm->{$self->{svn_path}};
1996 delete $rm->{''}; # we never delete the url we're tracking
1997 return unless %$rm;
1998
1999 my ($fh, $ctx) = command_output_pipe(qw/ls-tree --name-only -r -z/,
2000 $self->{tree_b});
2001 local $/ = "\0";
2002 while (<$fh>) {
2003 chomp;
2004 my @dn = split m#/#, $_;
2005 while (pop @dn) {
2006 delete $rm->{join '/', @dn};
2007 }
2008 unless (%$rm) {
2009 close $fh;
2010 return;
2011 }
2012 }
2013 command_close_pipe($fh, $ctx);
2014
2015 my ($r, $p, $bat) = ($self->{r}, $self->{pool}, $self->{bat});
2016 foreach my $d (sort { $b =~ tr#/#/# <=> $a =~ tr#/#/# } keys %$rm) {
2017 $self->close_directory($bat->{$d}, $p);
2018 my ($dn) = ($d =~ m#^(.*?)/?(?:[^/]+)$#);
2019 print "\tD+\t$d/\n" unless $::_q;
2020 $self->SUPER::delete_entry($d, $r, $bat->{$dn}, $p);
2021 delete $bat->{$d};
2022 }
2023 }
2024
2025 sub open_or_add_dir {
2026 my ($self, $full_path, $baton) = @_;
2027 my $t = $self->{types}->{$full_path};
2028 if (!defined $t) {
2029 die "$full_path not known in r$self->{r} or we have a bug!\n";
2030 }
2031 if ($t == $SVN::Node::none) {
2032 return $self->add_directory($full_path, $baton,
2033 undef, -1, $self->{pool});
2034 } elsif ($t == $SVN::Node::dir) {
2035 return $self->open_directory($full_path, $baton,
2036 $self->{r}, $self->{pool});
2037 }
2038 print STDERR "$full_path already exists in repository at ",
2039 "r$self->{r} and it is not a directory (",
2040 ($t == $SVN::Node::file ? 'file' : 'unknown'),"/$t)\n";
2041 exit 1;
2042 }
2043
2044 sub ensure_path {
2045 my ($self, $path) = @_;
2046 my $bat = $self->{bat};
2047 my $repo_path = $self->repo_path($path);
2048 return $bat->{''} unless (length $repo_path);
2049 my @p = split m#/+#, $repo_path;
2050 my $c = shift @p;
2051 $bat->{$c} ||= $self->open_or_add_dir($c, $bat->{''});
2052 while (@p) {
2053 my $c0 = $c;
2054 $c .= '/' . shift @p;
2055 $bat->{$c} ||= $self->open_or_add_dir($c, $bat->{$c0});
2056 }
2057 return $bat->{$c};
2058 }
2059
2060 sub A {
2061 my ($self, $m) = @_;
2062 my ($dir, $file) = split_path($m->{file_b});
2063 my $pbat = $self->ensure_path($dir);
2064 my $fbat = $self->add_file($self->repo_path($m->{file_b}), $pbat,
2065 undef, -1);
2066 print "\tA\t$m->{file_b}\n" unless $::_q;
2067 $self->chg_file($fbat, $m);
2068 $self->close_file($fbat,undef,$self->{pool});
2069 }
2070
2071 sub C {
2072 my ($self, $m) = @_;
2073 my ($dir, $file) = split_path($m->{file_b});
2074 my $pbat = $self->ensure_path($dir);
2075 my $fbat = $self->add_file($self->repo_path($m->{file_b}), $pbat,
2076 $self->url_path($m->{file_a}), $self->{r});
2077 print "\tC\t$m->{file_a} => $m->{file_b}\n" unless $::_q;
2078 $self->chg_file($fbat, $m);
2079 $self->close_file($fbat,undef,$self->{pool});
2080 }
2081
2082 sub delete_entry {
2083 my ($self, $path, $pbat) = @_;
2084 my $rpath = $self->repo_path($path);
2085 my ($dir, $file) = split_path($rpath);
2086 $self->{rm}->{$dir} = 1;
2087 $self->SUPER::delete_entry($rpath, $self->{r}, $pbat, $self->{pool});
2088 }
2089
2090 sub R {
2091 my ($self, $m) = @_;
2092 my ($dir, $file) = split_path($m->{file_b});
2093 my $pbat = $self->ensure_path($dir);
2094 my $fbat = $self->add_file($self->repo_path($m->{file_b}), $pbat,
2095 $self->url_path($m->{file_a}), $self->{r});
2096 print "\tR\t$m->{file_a} => $m->{file_b}\n" unless $::_q;
2097 $self->chg_file($fbat, $m);
2098 $self->close_file($fbat,undef,$self->{pool});
2099
2100 ($dir, $file) = split_path($m->{file_a});
2101 $pbat = $self->ensure_path($dir);
2102 $self->delete_entry($m->{file_a}, $pbat);
2103 }
2104
2105 sub M {
2106 my ($self, $m) = @_;
2107 my ($dir, $file) = split_path($m->{file_b});
2108 my $pbat = $self->ensure_path($dir);
2109 my $fbat = $self->open_file($self->repo_path($m->{file_b}),
2110 $pbat,$self->{r},$self->{pool});
2111 print "\t$m->{chg}\t$m->{file_b}\n" unless $::_q;
2112 $self->chg_file($fbat, $m);
2113 $self->close_file($fbat,undef,$self->{pool});
2114 }
2115
2116 sub T { shift->M(@_) }
2117
2118 sub change_file_prop {
2119 my ($self, $fbat, $pname, $pval) = @_;
2120 $self->SUPER::change_file_prop($fbat, $pname, $pval, $self->{pool});
2121 }
2122
2123 sub chg_file {
2124 my ($self, $fbat, $m) = @_;
2125 if ($m->{mode_b} =~ /755$/ && $m->{mode_a} !~ /755$/) {
2126 $self->change_file_prop($fbat,'svn:executable','*');
2127 } elsif ($m->{mode_b} !~ /755$/ && $m->{mode_a} =~ /755$/) {
2128 $self->change_file_prop($fbat,'svn:executable',undef);
2129 }
2130 my $fh = IO::File->new_tmpfile or croak $!;
2131 if ($m->{mode_b} =~ /^120/) {
2132 print $fh 'link ' or croak $!;
2133 $self->change_file_prop($fbat,'svn:special','*');
2134 } elsif ($m->{mode_a} =~ /^120/ && $m->{mode_b} !~ /^120/) {
2135 $self->change_file_prop($fbat,'svn:special',undef);
2136 }
2137 defined(my $pid = fork) or croak $!;
2138 if (!$pid) {
2139 open STDOUT, '>&', $fh or croak $!;
2140 exec qw/git-cat-file blob/, $m->{sha1_b} or croak $!;
2141 }
2142 waitpid $pid, 0;
2143 croak $? if $?;
2144 $fh->flush == 0 or croak $!;
2145 seek $fh, 0, 0 or croak $!;
2146
2147 my $md5 = Digest::MD5->new;
2148 $md5->addfile($fh) or croak $!;
2149 seek $fh, 0, 0 or croak $!;
2150
2151 my $exp = $md5->hexdigest;
2152 my $pool = SVN::Pool->new;
2153 my $atd = $self->apply_textdelta($fbat, undef, $pool);
2154 my $got = SVN::TxDelta::send_stream($fh, @$atd, $pool);
2155 die "Checksum mismatch\nexpected: $exp\ngot: $got\n" if ($got ne $exp);
2156 $pool->clear;
2157
2158 close $fh or croak $!;
2159 }
2160
2161 sub D {
2162 my ($self, $m) = @_;
2163 my ($dir, $file) = split_path($m->{file_b});
2164 my $pbat = $self->ensure_path($dir);
2165 print "\tD\t$m->{file_b}\n" unless $::_q;
2166 $self->delete_entry($m->{file_b}, $pbat);
2167 }
2168
2169 sub close_edit {
2170 my ($self) = @_;
2171 my ($p,$bat) = ($self->{pool}, $self->{bat});
2172 foreach (sort { $b =~ tr#/#/# <=> $a =~ tr#/#/# } keys %$bat) {
2173 $self->close_directory($bat->{$_}, $p);
2174 }
2175 $self->SUPER::close_edit($p);
2176 $p->clear;
2177 }
2178
2179 sub abort_edit {
2180 my ($self) = @_;
2181 $self->SUPER::abort_edit($self->{pool});
2182 }
2183
2184 sub DESTROY {
2185 my $self = shift;
2186 $self->SUPER::DESTROY(@_);
2187 $self->{pool}->clear;
2188 }
2189
2190 # this drives the editor
2191 sub apply_diff {
2192 my ($self) = @_;
2193 my $mods = $self->{mods};
2194 my %o = ( D => 1, R => 0, C => -1, A => 3, M => 3, T => 3 );
2195 foreach my $m (sort { $o{$a->{chg}} <=> $o{$b->{chg}} } @$mods) {
2196 my $f = $m->{chg};
2197 if (defined $o{$f}) {
2198 $self->$f($m);
2199 } else {
2200 fatal("Invalid change type: $f\n");
2201 }
2202 }
2203 $self->rmdirs if $_rmdir;
2204 if (@$mods == 0) {
2205 $self->abort_edit;
2206 } else {
2207 $self->close_edit;
2208 }
2209 return scalar @$mods;
2210 }
2211
2212 package Git::SVN::Ra;
2213 use vars qw/@ISA $config_dir/;
2214 use strict;
2215 use warnings;
2216 my ($can_do_switch);
2217 my $RA;
2218
2219 BEGIN {
2220 # enforce temporary pool usage for some simple functions
2221 my $e;
2222 foreach (qw/get_latest_revnum rev_proplist get_file
2223 check_path get_dir get_uuid get_repos_root/) {
2224 $e .= "sub $_ {
2225 my \$self = shift;
2226 my \$pool = SVN::Pool->new;
2227 my \@ret = \$self->SUPER::$_(\@_,\$pool);
2228 \$pool->clear;
2229 wantarray ? \@ret : \$ret[0]; }\n";
2230 }
2231 eval $e;
2232 }
2233
2234 sub new {
2235 my ($class, $url) = @_;
2236 $url =~ s!/+$!!;
2237 return $RA if ($RA && $RA->{url} eq $url);
2238
2239 SVN::_Core::svn_config_ensure($config_dir, undef);
2240 my ($baton, $callbacks) = SVN::Core::auth_open_helper([
2241 SVN::Client::get_simple_provider(),
2242 SVN::Client::get_ssl_server_trust_file_provider(),
2243 SVN::Client::get_simple_prompt_provider(
2244 \&Git::SVN::Prompt::simple, 2),
2245 SVN::Client::get_ssl_client_cert_prompt_provider(
2246 \&Git::SVN::Prompt::ssl_client_cert, 2),
2247 SVN::Client::get_ssl_client_cert_pw_prompt_provider(
2248 \&Git::SVN::Prompt::ssl_client_cert_pw, 2),
2249 SVN::Client::get_username_provider(),
2250 SVN::Client::get_ssl_server_trust_prompt_provider(
2251 \&Git::SVN::Prompt::ssl_server_trust),
2252 SVN::Client::get_username_prompt_provider(
2253 \&Git::SVN::Prompt::username, 2),
2254 ]);
2255 my $config = SVN::Core::config_get_config($config_dir);
2256 my $self = SVN::Ra->new(url => $url, auth => $baton,
2257 config => $config,
2258 pool => SVN::Pool->new,
2259 auth_provider_callbacks => $callbacks);
2260 $self->{svn_path} = $url;
2261 $self->{repos_root} = $self->get_repos_root;
2262 $self->{svn_path} =~ s#^\Q$self->{repos_root}\E/*##;
2263 $RA = bless $self, $class;
2264 }
2265
2266 sub DESTROY {
2267 # do not call the real DESTROY since we store ourselves in $RA
2268 }
2269
2270 sub get_log {
2271 my ($self, @args) = @_;
2272 my $pool = SVN::Pool->new;
2273 splice(@args, 3, 1) if ($SVN::Core::VERSION le '1.2.0');
2274 my $ret = $self->SUPER::get_log(@args, $pool);
2275 $pool->clear;
2276 $ret;
2277 }
2278
2279 sub get_commit_editor {
2280 my ($self, $log, $cb, $pool) = @_;
2281 my @lock = $SVN::Core::VERSION ge '1.2.0' ? (undef, 0) : ();
2282 $self->SUPER::get_commit_editor($log, $cb, @lock, $pool);
2283 }
2284
2285 sub uuid {
2286 my ($self) = @_;
2287 $self->{uuid} ||= $self->get_uuid;
2288 }
2289
2290 sub gs_do_update {
2291 my ($self, $rev_a, $rev_b, $gs, $editor) = @_;
2292 my $new = ($rev_a == $rev_b);
2293 my $path = $gs->{path};
2294
2295 my $ta = $self->check_path($path, $rev_a);
2296 my $tb = $new ? $ta : $self->check_path($path, $rev_b);
2297 return 1 if ($tb != $SVN::Node::dir && $ta != $SVN::Node::dir);
2298 if ($ta == $SVN::Node::none) {
2299 $rev_a = $rev_b;
2300 $new = 1;
2301 }
2302
2303 my $pool = SVN::Pool->new;
2304 $editor->set_path_strip($path);
2305 my (@pc) = split m#/#, $path;
2306 my $reporter = $self->do_update($rev_b, (@pc ? shift @pc : ''),
2307 1, $editor, $pool);
2308 my @lock = $SVN::Core::VERSION ge '1.2.0' ? (undef) : ();
2309
2310 # Since we can't rely on svn_ra_reparent being available, we'll
2311 # just have to do some magic with set_path to make it so
2312 # we only want a partial path.
2313 my $sp = '';
2314 my $final = join('/', @pc);
2315 while (@pc) {
2316 $reporter->set_path($sp, $rev_b, 0, @lock, $pool);
2317 $sp .= '/' if length $sp;
2318 $sp .= shift @pc;
2319 }
2320 die "BUG: '$sp' != '$final'\n" if ($sp ne $final);
2321
2322 $reporter->set_path($sp, $rev_a, $new, @lock, $pool);
2323
2324 $reporter->finish_report($pool);
2325 $pool->clear;
2326 $editor->{git_commit_ok};
2327 }
2328
2329 # this requires SVN 1.4.3 or later (do_switch didn't work before 1.4.3, and
2330 # svn_ra_reparent didn't work before 1.4)
2331 sub gs_do_switch {
2332 my ($self, $rev_a, $rev_b, $gs, $url_b, $editor) = @_;
2333 my $path = $gs->{path};
2334 my $pool = SVN::Pool->new;
2335
2336 my $full_url = $self->{url};
2337 my $old_url = $full_url;
2338 $full_url .= "/$path" if length $path;
2339 my ($ra, $reparented);
2340 if ($old_url ne $full_url) {
2341 if ($old_url !~ m#^svn(\+ssh)?://#) {
2342 SVN::_Ra::svn_ra_reparent($self->{session}, $full_url,
2343 $pool);
2344 $self->{url} = $full_url;
2345 $reparented = 1;
2346 } else {
2347 $ra = Git::SVN::Ra->new($full_url);
2348 }
2349 }
2350 $ra ||= $self;
2351 my $reporter = $ra->do_switch($rev_b, '', 1, $url_b, $editor, $pool);
2352 my @lock = $SVN::Core::VERSION ge '1.2.0' ? (undef) : ();
2353 $reporter->set_path('', $rev_a, 0, @lock, $pool);
2354 $reporter->finish_report($pool);
2355
2356 if ($reparented) {
2357 SVN::_Ra::svn_ra_reparent($self->{session}, $old_url, $pool);
2358 $self->{url} = $old_url;
2359 }
2360
2361 $pool->clear;
2362 $editor->{git_commit_ok};
2363 }
2364
2365 sub gs_fetch_loop_common {
2366 my ($self, $base, $head, @gs) = @_;
2367 my $inc = 1000;
2368 my ($min, $max) = ($base, $head < $base + $inc ? $head : $base + $inc);
2369 foreach my $gs (@gs) {
2370 if (my $last_commit = $gs->last_commit) {
2371 $gs->assert_index_clean($last_commit);
2372 }
2373 }
2374 while (1) {
2375 my %revs;
2376 my $err;
2377 my $err_handler = $SVN::Error::handler;
2378 $SVN::Error::handler = sub {
2379 ($err) = @_;
2380 skip_unknown_revs($err);
2381 };
2382 foreach my $gs (@gs) {
2383 $self->get_log([$gs->{path}], $min, $max, 0, 1, 1, sub
2384 { my ($paths, $rev) = @_;
2385 push @{$revs{$rev}},
2386 [ $gs,
2387 dup_changed_paths($paths) ] });
2388
2389 next unless ($err && $max >= $head);
2390
2391 print STDERR "Path '$gs->{path}' ",
2392 "was probably deleted:\n",
2393 $err->expanded_message,
2394 "\nWill attempt to follow ",
2395 "revisions r$min .. r$max ",
2396 "committed before the deletion\n";
2397 my $hi = $max;
2398 while (--$hi >= $min) {
2399 my $ok;
2400 $self->get_log([$gs->{path}], $min, $hi,
2401 0, 1, 1, sub {
2402 my ($paths, $rev) = @_;
2403 $ok = $rev;
2404 push @{$revs{$rev}}, [ $gs,
2405 dup_changed_paths($_[0])]});
2406 if ($ok) {
2407 print STDERR "r$min .. r$ok OK\n";
2408 last;
2409 }
2410 }
2411 }
2412 $SVN::Error::handler = $err_handler;
2413 foreach my $r (sort {$a <=> $b} keys %revs) {
2414 foreach (@{$revs{$r}}) {
2415 my ($gs, $paths) = @$_;
2416 my $lr = $gs->last_rev;
2417 next if defined $lr && $lr >= $r;
2418 next if defined $gs->rev_db_get($r);
2419 if (my $log_entry = $gs->do_fetch($paths, $r)) {
2420 $gs->do_git_commit($log_entry);
2421 }
2422 }
2423 }
2424 # pre-fill the .rev_db since it'll eventually get filled in
2425 # with '0' x40 if something new gets committed
2426 foreach my $gs (@gs) {
2427 next if defined $gs->rev_db_get($max);
2428 $gs->rev_db_set($max, 0 x40);
2429 }
2430 last if $max >= $head;
2431 $min = $max + 1;
2432 $max += $inc;
2433 $max = $head if ($max > $head);
2434 }
2435 }
2436
2437 sub minimize_url {
2438 my ($self) = @_;
2439 return $self->{url} if ($self->{url} eq $self->{repos_root});
2440 my $url = $self->{repos_root};
2441 my @components = split(m!/!, $self->{svn_path});
2442 my $c = '';
2443 do {
2444 $url .= "/$c" if length $c;
2445 eval { (ref $self)->new($url)->get_latest_revnum };
2446 } while ($@ && ($c = shift @components));
2447 $url;
2448 }
2449
2450 sub can_do_switch {
2451 my $self = shift;
2452 unless (defined $can_do_switch) {
2453 my $pool = SVN::Pool->new;
2454 my $rep = eval {
2455 $self->do_switch(1, '', 0, $self->{url},
2456 SVN::Delta::Editor->new, $pool);
2457 };
2458 if ($@) {
2459 $can_do_switch = 0;
2460 } else {
2461 $rep->abort_report($pool);
2462 $can_do_switch = 1;
2463 }
2464 $pool->clear;
2465 }
2466 $can_do_switch;
2467 }
2468
2469 sub skip_unknown_revs {
2470 my ($err) = @_;
2471 my $errno = $err->apr_err();
2472 # Maybe the branch we're tracking didn't
2473 # exist when the repo started, so it's
2474 # not an error if it doesn't, just continue
2475 #
2476 # Wonderfully consistent library, eh?
2477 # 160013 - svn:// and file://
2478 # 175002 - http(s)://
2479 # 175007 - http(s):// (this repo required authorization, too...)
2480 # More codes may be discovered later...
2481 if ($errno == 175007 || $errno == 175002 || $errno == 160013) {
2482 return;
2483 }
2484 die "Error from SVN, ($errno): ", $err->expanded_message,"\n";
2485 }
2486
2487 # svn_log_changed_path_t objects passed to get_log are likely to be
2488 # overwritten even if only the refs are copied to an external variable,
2489 # so we should dup the structures in their entirety. Using an externally
2490 # passed pool (instead of our temporary and quickly cleared pool in
2491 # Git::SVN::Ra) does not help matters at all...
2492 sub dup_changed_paths {
2493 my ($paths) = @_;
2494 return undef unless $paths;
2495 my %ret;
2496 foreach my $p (keys %$paths) {
2497 my $i = $paths->{$p};
2498 my %s = map { $_ => $i->$_ }
2499 qw/copyfrom_path copyfrom_rev action/;
2500 $ret{$p} = \%s;
2501 }
2502 \%ret;
2503 }
2504
2505 package Git::SVN::Log;
2506 use strict;
2507 use warnings;
2508 use POSIX qw/strftime/;
2509 use vars qw/$TZ $limit $color $pager $non_recursive $verbose $oneline
2510 %rusers $show_commit $incremental/;
2511 my $l_fmt;
2512
2513 sub cmt_showable {
2514 my ($c) = @_;
2515 return 1 if defined $c->{r};
2516 if ($c->{l} && $c->{l}->[-1] eq "...\n" &&
2517 $c->{a_raw} =~ /\@([a-f\d\-]+)>$/) {
2518 my @log = command(qw/cat-file commit/, $c->{c});
2519 shift @log while ($log[0] ne "\n");
2520 shift @log;
2521 @{$c->{l}} = grep !/^git-svn-id: /, @log;
2522
2523 (undef, $c->{r}, undef) = ::extract_metadata(
2524 (grep(/^git-svn-id: /, @log))[-1]);
2525 }
2526 return defined $c->{r};
2527 }
2528
2529 sub log_use_color {
2530 return 1 if $color;
2531 my ($dc, $dcvar);
2532 $dcvar = 'color.diff';
2533 $dc = `git-config --get $dcvar`;
2534 if ($dc eq '') {
2535 # nothing at all; fallback to "diff.color"
2536 $dcvar = 'diff.color';
2537 $dc = `git-config --get $dcvar`;
2538 }
2539 chomp($dc);
2540 if ($dc eq 'auto') {
2541 my $pc;
2542 $pc = `git-config --get color.pager`;
2543 if ($pc eq '') {
2544 # does not have it -- fallback to pager.color
2545 $pc = `git-config --bool --get pager.color`;
2546 }
2547 else {
2548 $pc = `git-config --bool --get color.pager`;
2549 if ($?) {
2550 $pc = 'false';
2551 }
2552 }
2553 chomp($pc);
2554 if (-t *STDOUT || (defined $pager && $pc eq 'true')) {
2555 return ($ENV{TERM} && $ENV{TERM} ne 'dumb');
2556 }
2557 return 0;
2558 }
2559 return 0 if $dc eq 'never';
2560 return 1 if $dc eq 'always';
2561 chomp($dc = `git-config --bool --get $dcvar`);
2562 return ($dc eq 'true');
2563 }
2564
2565 sub git_svn_log_cmd {
2566 my ($r_min, $r_max) = @_;
2567 my $gs = Git::SVN->_new;
2568 my @cmd = (qw/log --abbrev-commit --pretty=raw --default/,
2569 $gs->refname);
2570 push @cmd, '-r' unless $non_recursive;
2571 push @cmd, qw/--raw --name-status/ if $verbose;
2572 push @cmd, '--color' if log_use_color();
2573 return @cmd unless defined $r_max;
2574 if ($r_max == $r_min) {
2575 push @cmd, '--max-count=1';
2576 if (my $c = $gs->rev_db_get($r_max)) {
2577 push @cmd, $c;
2578 }
2579 } else {
2580 my ($c_min, $c_max);
2581 $c_max = $gs->rev_db_get($r_max);
2582 $c_min = $gs->rev_db_get($r_min);
2583 if (defined $c_min && defined $c_max) {
2584 if ($r_max > $r_max) {
2585 push @cmd, "$c_min..$c_max";
2586 } else {
2587 push @cmd, "$c_max..$c_min";
2588 }
2589 } elsif ($r_max > $r_min) {
2590 push @cmd, $c_max;
2591 } else {
2592 push @cmd, $c_min;
2593 }
2594 }
2595 return @cmd;
2596 }
2597
2598 # adapted from pager.c
2599 sub config_pager {
2600 $pager ||= $ENV{GIT_PAGER} || $ENV{PAGER};
2601 if (!defined $pager) {
2602 $pager = 'less';
2603 } elsif (length $pager == 0 || $pager eq 'cat') {
2604 $pager = undef;
2605 }
2606 }
2607
2608 sub run_pager {
2609 return unless -t *STDOUT;
2610 pipe my $rfd, my $wfd or return;
2611 defined(my $pid = fork) or ::fatal "Can't fork: $!\n";
2612 if (!$pid) {
2613 open STDOUT, '>&', $wfd or
2614 ::fatal "Can't redirect to stdout: $!\n";
2615 return;
2616 }
2617 open STDIN, '<&', $rfd or ::fatal "Can't redirect stdin: $!\n";
2618 $ENV{LESS} ||= 'FRSX';
2619 exec $pager or ::fatal "Can't run pager: $! ($pager)\n";
2620 }
2621
2622 sub tz_to_s_offset {
2623 my ($tz) = @_;
2624 $tz =~ s/(\d\d)$//;
2625 return ($1 * 60) + ($tz * 3600);
2626 }
2627
2628 sub get_author_info {
2629 my ($dest, $author, $t, $tz) = @_;
2630 $author =~ s/(?:^\s*|\s*$)//g;
2631 $dest->{a_raw} = $author;
2632 my $au;
2633 if ($::_authors) {
2634 $au = $rusers{$author} || undef;
2635 }
2636 if (!$au) {
2637 ($au) = ($author =~ /<([^>]+)\@[^>]+>$/);
2638 }
2639 $dest->{t} = $t;
2640 $dest->{tz} = $tz;
2641 $dest->{a} = $au;
2642 # Date::Parse isn't in the standard Perl distro :(
2643 if ($tz =~ s/^\+//) {
2644 $t += tz_to_s_offset($tz);
2645 } elsif ($tz =~ s/^\-//) {
2646 $t -= tz_to_s_offset($tz);
2647 }
2648 $dest->{t_utc} = $t;
2649 }
2650
2651 sub process_commit {
2652 my ($c, $r_min, $r_max, $defer) = @_;
2653 if (defined $r_min && defined $r_max) {
2654 if ($r_min == $c->{r} && $r_min == $r_max) {
2655 show_commit($c);
2656 return 0;
2657 }
2658 return 1 if $r_min == $r_max;
2659 if ($r_min < $r_max) {
2660 # we need to reverse the print order
2661 return 0 if (defined $limit && --$limit < 0);
2662 push @$defer, $c;
2663 return 1;
2664 }
2665 if ($r_min != $r_max) {
2666 return 1 if ($r_min < $c->{r});
2667 return 1 if ($r_max > $c->{r});
2668 }
2669 }
2670 return 0 if (defined $limit && --$limit < 0);
2671 show_commit($c);
2672 return 1;
2673 }
2674
2675 sub show_commit {
2676 my $c = shift;
2677 if ($oneline) {
2678 my $x = "\n";
2679 if (my $l = $c->{l}) {
2680 while ($l->[0] =~ /^\s*$/) { shift @$l }
2681 $x = $l->[0];
2682 }
2683 $l_fmt ||= 'A' . length($c->{r});
2684 print 'r',pack($l_fmt, $c->{r}),' | ';
2685 print "$c->{c} | " if $show_commit;
2686 print $x;
2687 } else {
2688 show_commit_normal($c);
2689 }
2690 }
2691
2692 sub show_commit_changed_paths {
2693 my ($c) = @_;
2694 return unless $c->{changed};
2695 print "Changed paths:\n", @{$c->{changed}};
2696 }
2697
2698 sub show_commit_normal {
2699 my ($c) = @_;
2700 print '-' x72, "\nr$c->{r} | ";
2701 print "$c->{c} | " if $show_commit;
2702 print "$c->{a} | ", strftime("%Y-%m-%d %H:%M:%S %z (%a, %d %b %Y)",
2703 localtime($c->{t_utc})), ' | ';
2704 my $nr_line = 0;
2705
2706 if (my $l = $c->{l}) {
2707 while ($l->[$#$l] eq "\n" && $#$l > 0
2708 && $l->[($#$l - 1)] eq "\n") {
2709 pop @$l;
2710 }
2711 $nr_line = scalar @$l;
2712 if (!$nr_line) {
2713 print "1 line\n\n\n";
2714 } else {
2715 if ($nr_line == 1) {
2716 $nr_line = '1 line';
2717 } else {
2718 $nr_line .= ' lines';
2719 }
2720 print $nr_line, "\n";
2721 show_commit_changed_paths($c);
2722 print "\n";
2723 print $_ foreach @$l;
2724 }
2725 } else {
2726 print "1 line\n";
2727 show_commit_changed_paths($c);
2728 print "\n";
2729
2730 }
2731 foreach my $x (qw/raw diff/) {
2732 if ($c->{$x}) {
2733 print "\n";
2734 print $_ foreach @{$c->{$x}}
2735 }
2736 }
2737 }
2738
2739 sub cmd_show_log {
2740 my (@args) = @_;
2741 my ($r_min, $r_max);
2742 my $r_last = -1; # prevent dupes
2743 if (defined $TZ) {
2744 $ENV{TZ} = $TZ;
2745 } else {
2746 delete $ENV{TZ};
2747 }
2748 if (defined $::_revision) {
2749 if ($::_revision =~ /^(\d+):(\d+)$/) {
2750 ($r_min, $r_max) = ($1, $2);
2751 } elsif ($::_revision =~ /^\d+$/) {
2752 $r_min = $r_max = $::_revision;
2753 } else {
2754 ::fatal "-r$::_revision is not supported, use ",
2755 "standard \'git log\' arguments instead\n";
2756 }
2757 }
2758
2759 config_pager();
2760 @args = (git_svn_log_cmd($r_min, $r_max), @args);
2761 my $log = command_output_pipe(@args);
2762 run_pager();
2763 my (@k, $c, $d);
2764 my $esc_color = qr/(?:\033\[(?:(?:\d+;)*\d*)?m)*/;
2765 while (<$log>) {
2766 if (/^${esc_color}commit ($::sha1_short)/o) {
2767 my $cmt = $1;
2768 if ($c && cmt_showable($c) && $c->{r} != $r_last) {
2769 $r_last = $c->{r};
2770 process_commit($c, $r_min, $r_max, \@k) or
2771 goto out;
2772 }
2773 $d = undef;
2774 $c = { c => $cmt };
2775 } elsif (/^${esc_color}author (.+) (\d+) ([\-\+]?\d+)$/o) {
2776 get_author_info($c, $1, $2, $3);
2777 } elsif (/^${esc_color}(?:tree|parent|committer) /o) {
2778 # ignore
2779 } elsif (/^${esc_color}:\d{6} \d{6} $::sha1_short/o) {
2780 push @{$c->{raw}}, $_;
2781 } elsif (/^${esc_color}[ACRMDT]\t/) {
2782 # we could add $SVN->{svn_path} here, but that requires
2783 # remote access at the moment (repo_path_split)...
2784 s#^(${esc_color})([ACRMDT])\t#$1 $2 #o;
2785 push @{$c->{changed}}, $_;
2786 } elsif (/^${esc_color}diff /o) {
2787 $d = 1;
2788 push @{$c->{diff}}, $_;
2789 } elsif ($d) {
2790 push @{$c->{diff}}, $_;
2791 } elsif (/^${esc_color} (git-svn-id:.+)$/o) {
2792 ($c->{url}, $c->{r}, undef) = ::extract_metadata($1);
2793 } elsif (s/^${esc_color} //o) {
2794 push @{$c->{l}}, $_;
2795 }
2796 }
2797 if ($c && defined $c->{r} && $c->{r} != $r_last) {
2798 $r_last = $c->{r};
2799 process_commit($c, $r_min, $r_max, \@k);
2800 }
2801 if (@k) {
2802 my $swap = $r_max;
2803 $r_max = $r_min;
2804 $r_min = $swap;
2805 process_commit($_, $r_min, $r_max) foreach reverse @k;
2806 }
2807 out:
2808 close $log;
2809 print '-' x72,"\n" unless $incremental || $oneline;
2810 }
2811
2812 package Git::SVN::Migration;
2813 # these version numbers do NOT correspond to actual version numbers
2814 # of git nor git-svn. They are just relative.
2815 #
2816 # v0 layout: .git/$id/info/url, refs/heads/$id-HEAD
2817 #
2818 # v1 layout: .git/$id/info/url, refs/remotes/$id
2819 #
2820 # v2 layout: .git/svn/$id/info/url, refs/remotes/$id
2821 #
2822 # v3 layout: .git/svn/$id, refs/remotes/$id
2823 # - info/url may remain for backwards compatibility
2824 # - this is what we migrate up to this layout automatically,
2825 # - this will be used by git svn init on single branches
2826 #
2827 # v4 layout: .git/svn/$repo_id/$id, refs/remotes/$repo_id/$id
2828 # - this is only created for newly multi-init-ed
2829 # repositories. Similar in spirit to the
2830 # --use-separate-remotes option in git-clone (now default)
2831 # - we do not automatically migrate to this (following
2832 # the example set by core git)
2833 use strict;
2834 use warnings;
2835 use Carp qw/croak/;
2836 use File::Path qw/mkpath/;
2837 use File::Basename qw/dirname basename/;
2838 use vars qw/$_minimize/;
2839
2840 sub migrate_from_v0 {
2841 my $git_dir = $ENV{GIT_DIR};
2842 return undef unless -d $git_dir;
2843 my ($fh, $ctx) = command_output_pipe(qw/rev-parse --symbolic --all/);
2844 my $migrated = 0;
2845 while (<$fh>) {
2846 chomp;
2847 my ($id, $orig_ref) = ($_, $_);
2848 next unless $id =~ s#^refs/heads/(.+)-HEAD$#$1#;
2849 next unless -f "$git_dir/$id/info/url";
2850 my $new_ref = "refs/remotes/$id";
2851 if (::verify_ref("$new_ref^0")) {
2852 print STDERR "W: $orig_ref is probably an old ",
2853 "branch used by an ancient version of ",
2854 "git-svn.\n",
2855 "However, $new_ref also exists.\n",
2856 "We will not be able ",
2857 "to use this branch until this ",
2858 "ambiguity is resolved.\n";
2859 next;
2860 }
2861 print STDERR "Migrating from v0 layout...\n" if !$migrated;
2862 print STDERR "Renaming ref: $orig_ref => $new_ref\n";
2863 command_noisy('update-ref', $new_ref, $orig_ref);
2864 command_noisy('update-ref', '-d', $orig_ref, $orig_ref);
2865 $migrated++;
2866 }
2867 command_close_pipe($fh, $ctx);
2868 print STDERR "Done migrating from v0 layout...\n" if $migrated;
2869 $migrated;
2870 }
2871
2872 sub migrate_from_v1 {
2873 my $git_dir = $ENV{GIT_DIR};
2874 my $migrated = 0;
2875 return $migrated unless -d $git_dir;
2876 my $svn_dir = "$git_dir/svn";
2877
2878 # just in case somebody used 'svn' as their $id at some point...
2879 return $migrated if -d $svn_dir && ! -f "$svn_dir/info/url";
2880
2881 print STDERR "Migrating from a git-svn v1 layout...\n";
2882 mkpath([$svn_dir]);
2883 print STDERR "Data from a previous version of git-svn exists, but\n\t",
2884 "$svn_dir\n\t(required for this version ",
2885 "($::VERSION) of git-svn) does not. exist\n";
2886 my ($fh, $ctx) = command_output_pipe(qw/rev-parse --symbolic --all/);
2887 while (<$fh>) {
2888 my $x = $_;
2889 next unless $x =~ s#^refs/remotes/##;
2890 chomp $x;
2891 next unless -f "$git_dir/$x/info/url";
2892 my $u = eval { ::file_to_s("$git_dir/$x/info/url") };
2893 next unless $u;
2894 my $dn = dirname("$git_dir/svn/$x");
2895 mkpath([$dn]) unless -d $dn;
2896 if ($x eq 'svn') { # they used 'svn' as GIT_SVN_ID:
2897 mkpath(["$git_dir/svn/svn"]);
2898 print STDERR " - $git_dir/$x/info => ",
2899 "$git_dir/svn/$x/info\n";
2900 rename "$git_dir/$x/info", "$git_dir/svn/$x/info" or
2901 croak "$!: $x";
2902 # don't worry too much about these, they probably
2903 # don't exist with repos this old (save for index,
2904 # and we can easily regenerate that)
2905 foreach my $f (qw/unhandled.log index .rev_db/) {
2906 rename "$git_dir/$x/$f", "$git_dir/svn/$x/$f";
2907 }
2908 } else {
2909 print STDERR " - $git_dir/$x => $git_dir/svn/$x\n";
2910 rename "$git_dir/$x", "$git_dir/svn/$x" or
2911 croak "$!: $x";
2912 }
2913 $migrated++;
2914 }
2915 command_close_pipe($fh, $ctx);
2916 print STDERR "Done migrating from a git-svn v1 layout\n";
2917 $migrated;
2918 }
2919
2920 sub read_old_urls {
2921 my ($l_map, $pfx, $path) = @_;
2922 my @dir;
2923 foreach (<$path/*>) {
2924 if (-r "$_/info/url") {
2925 $pfx .= '/' if $pfx && $pfx !~ m!/$!;
2926 my $ref_id = $pfx . basename $_;
2927 my $url = ::file_to_s("$_/info/url");
2928 $l_map->{$ref_id} = $url;
2929 } elsif (-d $_) {
2930 push @dir, $_;
2931 }
2932 }
2933 foreach (@dir) {
2934 my $x = $_;
2935 $x =~ s!^\Q$ENV{GIT_DIR}\E/svn/!!o;
2936 read_old_urls($l_map, $x, $_);
2937 }
2938 }
2939
2940 sub migrate_from_v2 {
2941 my @cfg = command(qw/config -l/);
2942 return if grep /^svn-remote\..+\.url=/, @cfg;
2943 my %l_map;
2944 read_old_urls(\%l_map, '', "$ENV{GIT_DIR}/svn");
2945 my $migrated = 0;
2946
2947 foreach my $ref_id (sort keys %l_map) {
2948 Git::SVN->init($l_map{$ref_id}, '', $ref_id, $ref_id);
2949 $migrated++;
2950 }
2951 $migrated;
2952 }
2953
2954 sub minimize_connections {
2955 my $r = Git::SVN::read_all_remotes();
2956 my $new_urls = {};
2957 my $root_repos = {};
2958 foreach my $repo_id (keys %$r) {
2959 my $url = $r->{$repo_id}->{url} or next;
2960 my $fetch = $r->{$repo_id}->{fetch} or next;
2961 my $ra = Git::SVN::Ra->new($url);
2962
2963 # skip existing cases where we already connect to the root
2964 if (($ra->{url} eq $ra->{repos_root}) ||
2965 (Git::SVN::sanitize_remote_name($ra->{repos_root}) eq
2966 $repo_id)) {
2967 $root_repos->{$ra->{url}} = $repo_id;
2968 next;
2969 }
2970
2971 my $root_ra = Git::SVN::Ra->new($ra->{repos_root});
2972 my $root_path = $ra->{url};
2973 $root_path =~ s#^\Q$ra->{repos_root}\E/*##;
2974 foreach my $path (keys %$fetch) {
2975 my $ref_id = $fetch->{$path};
2976 my $gs = Git::SVN->new($ref_id, $repo_id, $path);
2977
2978 # make sure we can read when connecting to
2979 # a higher level of a repository
2980 my ($last_rev, undef) = $gs->last_rev_commit;
2981 if (!defined $last_rev) {
2982 $last_rev = eval {
2983 $root_ra->get_latest_revnum;
2984 };
2985 next if $@;
2986 }
2987 my $new = $root_path;
2988 $new .= length $path ? "/$path" : '';
2989 eval {
2990 $root_ra->get_log([$new], $last_rev, $last_rev,
2991 0, 0, 1, sub { });
2992 };
2993 next if $@;
2994 $new_urls->{$ra->{repos_root}}->{$new} =
2995 { ref_id => $ref_id,
2996 old_repo_id => $repo_id,
2997 old_path => $path };
2998 }
2999 }
3000
3001 my @emptied;
3002 foreach my $url (keys %$new_urls) {
3003 # see if we can re-use an existing [svn-remote "repo_id"]
3004 # instead of creating a(n ugly) new section:
3005 my $repo_id = $root_repos->{$url} ||
3006 Git::SVN::sanitize_remote_name($url);
3007
3008 my $fetch = $new_urls->{$url};
3009 foreach my $path (keys %$fetch) {
3010 my $x = $fetch->{$path};
3011 Git::SVN->init($url, $path, $repo_id, $x->{ref_id});
3012 my $pfx = "svn-remote.$x->{old_repo_id}";
3013
3014 my $old_fetch = quotemeta("$x->{old_path}:".
3015 "refs/remotes/$x->{ref_id}");
3016 command_noisy(qw/config --unset/,
3017 "$pfx.fetch", '^'. $old_fetch . '$');
3018 delete $r->{$x->{old_repo_id}}->
3019 {fetch}->{$x->{old_path}};
3020 if (!keys %{$r->{$x->{old_repo_id}}->{fetch}}) {
3021 command_noisy(qw/config --unset/,
3022 "$pfx.url");
3023 push @emptied, $x->{old_repo_id}
3024 }
3025 }
3026 }
3027 if (@emptied) {
3028 my $file = $ENV{GIT_CONFIG} || $ENV{GIT_CONFIG_LOCAL} ||
3029 "$ENV{GIT_DIR}/config";
3030 print STDERR <<EOF;
3031 The following [svn-remote] sections in your config file ($file) are empty
3032 and can be safely removed:
3033 EOF
3034 print STDERR "[svn-remote \"$_\"]\n" foreach @emptied;
3035 }
3036 }
3037
3038 sub migration_check {
3039 migrate_from_v0();
3040 migrate_from_v1();
3041 migrate_from_v2();
3042 minimize_connections() if $_minimize;
3043 }
3044
3045 package Git::IndexInfo;
3046 use strict;
3047 use warnings;
3048 use Git qw/command_input_pipe command_close_pipe/;
3049
3050 sub new {
3051 my ($class) = @_;
3052 my ($gui, $ctx) = command_input_pipe(qw/update-index -z --index-info/);
3053 bless { gui => $gui, ctx => $ctx, nr => 0}, $class;
3054 }
3055
3056 sub remove {
3057 my ($self, $path) = @_;
3058 if (print { $self->{gui} } '0 ', 0 x 40, "\t", $path, "\0") {
3059 return ++$self->{nr};
3060 }
3061 undef;
3062 }
3063
3064 sub update {
3065 my ($self, $mode, $hash, $path) = @_;
3066 if (print { $self->{gui} } $mode, ' ', $hash, "\t", $path, "\0") {
3067 return ++$self->{nr};
3068 }
3069 undef;
3070 }
3071
3072 sub DESTROY {
3073 my ($self) = @_;
3074 command_close_pipe($self->{gui}, $self->{ctx});
3075 }
3076
3077 __END__
3078
3079 Data structures:
3080
3081 $log_entry hashref as returned by libsvn_log_entry()
3082 {
3083 log => 'whitespace-formatted log entry
3084 ', # trailing newline is preserved
3085 revision => '8', # integer
3086 date => '2004-02-24T17:01:44.108345Z', # commit date
3087 author => 'committer name'
3088 };
3089
3090
3091 # this is generated by generate_diff();
3092 @mods = array of diff-index line hashes, each element represents one line
3093 of diff-index output
3094
3095 diff-index line ($m hash)
3096 {
3097 mode_a => first column of diff-index output, no leading ':',
3098 mode_b => second column of diff-index output,
3099 sha1_b => sha1sum of the final blob,
3100 chg => change type [MCRADT],
3101 file_a => original file name of a file (iff chg is 'C' or 'R')
3102 file_b => new/current file name of a file (any chg)
3103 }
3104 ;
3105
3106 # retval of read_url_paths{,_all}();
3107 $l_map = {
3108 # repository root url
3109 'https://svn.musicpd.org' => {
3110 # repository path # GIT_SVN_ID
3111 'mpd/trunk' => 'trunk',
3112 'mpd/tags/0.11.5' => 'tags/0.11.5',
3113 },
3114 }
3115
3116 Notes:
3117 I don't trust the each() function on unless I created %hash myself
3118 because the internal iterator may not have started at base.
MinGW port of GIT