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user-manual: update git-gc discussion
[git/mingw.git] / git-svn.perl
blob9986a0c9bb29fe348050775ba06fd93c89bb11b5
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 $SVN_URL $SVN_INFO $SVN_WC $SVN_UUID
8 $GIT_SVN_INDEX $GIT_SVN
9 $GIT_DIR $GIT_SVN_DIR $REVDB/;
10 $AUTHOR = 'Eric Wong <normalperson@yhbt.net>';
11 $VERSION = '@@GIT_VERSION@@';
12
13 use Cwd qw/abs_path/;
14 $GIT_DIR = abs_path($ENV{GIT_DIR} || '.git');
15 $ENV{GIT_DIR} = $GIT_DIR;
16
17 my $LC_ALL = $ENV{LC_ALL};
18 my $TZ = $ENV{TZ};
19 # make sure the svn binary gives consistent output between locales and TZs:
20 $ENV{TZ} = 'UTC';
21 $ENV{LC_ALL} = 'C';
22 $| = 1; # unbuffer STDOUT
23
24 # properties that we do not log:
25 my %SKIP = ( 'svn:wc:ra_dav:version-url' => 1,
26 'svn:special' => 1,
27 'svn:executable' => 1,
28 'svn:entry:committed-rev' => 1,
29 'svn:entry:last-author' => 1,
30 'svn:entry:uuid' => 1,
31 'svn:entry:committed-date' => 1,
32 );
33
34 sub fatal (@) { print STDERR @_; exit 1 }
35 require SVN::Core; # use()-ing this causes segfaults for me... *shrug*
36 require SVN::Ra;
37 require SVN::Delta;
38 if ($SVN::Core::VERSION lt '1.1.0') {
39 fatal "Need SVN::Core 1.1.0 or better (got $SVN::Core::VERSION)\n";
40 }
41 push @SVN::Git::Editor::ISA, 'SVN::Delta::Editor';
42 push @SVN::Git::Fetcher::ISA, 'SVN::Delta::Editor';
43 *SVN::Git::Fetcher::process_rm = *process_rm;
44 use Carp qw/croak/;
45 use IO::File qw//;
46 use File::Basename qw/dirname basename/;
47 use File::Path qw/mkpath/;
48 use Getopt::Long qw/:config gnu_getopt no_ignore_case auto_abbrev pass_through/;
49 use POSIX qw/strftime/;
50 use IPC::Open3;
51 use Memoize;
52 use Git qw/command command_oneline command_noisy
53 command_output_pipe command_input_pipe command_close_pipe/;
54 memoize('revisions_eq');
55 memoize('cmt_metadata');
56 memoize('get_commit_time');
57
58 my ($SVN);
59
60 my $_optimize_commits = 1 unless $ENV{GIT_SVN_NO_OPTIMIZE_COMMITS};
61 my $sha1 = qr/[a-f\d]{40}/;
62 my $sha1_short = qr/[a-f\d]{4,40}/;
63 my $_esc_color = qr/(?:\033\[(?:(?:\d+;)*\d*)?m)*/;
64 my ($_revision,$_stdin,$_no_ignore_ext,$_no_stop_copy,$_help,$_rmdir,$_edit,
65 $_find_copies_harder, $_l, $_cp_similarity, $_cp_remote,
66 $_repack, $_repack_nr, $_repack_flags, $_q,
67 $_message, $_file, $_follow_parent, $_no_metadata,
68 $_template, $_shared, $_no_default_regex, $_no_graft_copy,
69 $_limit, $_verbose, $_incremental, $_oneline, $_l_fmt, $_show_commit,
70 $_version, $_upgrade, $_authors, $_branch_all_refs, @_opt_m,
71 $_merge, $_strategy, $_dry_run, $_ignore_nodate, $_non_recursive,
72 $_username, $_config_dir, $_no_auth_cache,
73 $_pager, $_color, $_prefix);
74 my (@_branch_from, %tree_map, %users, %rusers, %equiv);
75 my ($_svn_can_do_switch);
76 my @repo_path_split_cache;
77
78 my %fc_opts = ( 'no-ignore-externals' => \$_no_ignore_ext,
79 'branch|b=s' => \@_branch_from,
80 'follow-parent|follow' => \$_follow_parent,
81 'branch-all-refs|B' => \$_branch_all_refs,
82 'authors-file|A=s' => \$_authors,
83 'repack:i' => \$_repack,
84 'no-metadata' => \$_no_metadata,
85 'quiet|q' => \$_q,
86 'username=s' => \$_username,
87 'config-dir=s' => \$_config_dir,
88 'no-auth-cache' => \$_no_auth_cache,
89 'ignore-nodate' => \$_ignore_nodate,
90 'repack-flags|repack-args|repack-opts=s' => \$_repack_flags);
91
92 my ($_trunk, $_tags, $_branches);
93 my %multi_opts = ( 'trunk|T=s' => \$_trunk,
94 'tags|t=s' => \$_tags,
95 'branches|b=s' => \$_branches );
96 my %init_opts = ( 'template=s' => \$_template, 'shared' => \$_shared );
97 my %cmt_opts = ( 'edit|e' => \$_edit,
98 'rmdir' => \$_rmdir,
99 'find-copies-harder' => \$_find_copies_harder,
100 'l=i' => \$_l,
101 'copy-similarity|C=i'=> \$_cp_similarity
102 );
103
104 my %cmd = (
105 fetch => [ \&cmd_fetch, "Download new revisions from SVN",
106 { 'revision|r=s' => \$_revision, %fc_opts } ],
107 init => [ \&init, "Initialize a repo for tracking" .
108 " (requires URL argument)",
109 \%init_opts ],
110 dcommit => [ \&dcommit, 'Commit several diffs to merge with upstream',
111 { 'merge|m|M' => \$_merge,
112 'strategy|s=s' => \$_strategy,
113 'dry-run|n' => \$_dry_run,
114 %cmt_opts, %fc_opts } ],
115 'set-tree' => [ \&commit, "Set an SVN repository to a git tree-ish",
116 { 'stdin|' => \$_stdin, %cmt_opts, %fc_opts, } ],
117 'show-ignore' => [ \&show_ignore, "Show svn:ignore listings",
118 { 'revision|r=i' => \$_revision } ],
119 rebuild => [ \&rebuild, "Rebuild git-svn metadata (after git clone)",
120 { 'no-ignore-externals' => \$_no_ignore_ext,
121 'copy-remote|remote=s' => \$_cp_remote,
122 'upgrade' => \$_upgrade } ],
123 'graft-branches' => [ \&graft_branches,
124 'Detect merges/branches from already imported history',
125 { 'merge-rx|m' => \@_opt_m,
126 'branch|b=s' => \@_branch_from,
127 'branch-all-refs|B' => \$_branch_all_refs,
128 'no-default-regex' => \$_no_default_regex,
129 'no-graft-copy' => \$_no_graft_copy } ],
130 'multi-init' => [ \&multi_init,
131 'Initialize multiple trees (like git-svnimport)',
132 { %multi_opts, %init_opts,
133 'revision|r=i' => \$_revision,
134 'username=s' => \$_username,
135 'config-dir=s' => \$_config_dir,
136 'no-auth-cache' => \$_no_auth_cache,
137 'prefix=s' => \$_prefix,
138 } ],
139 'multi-fetch' => [ \&multi_fetch,
140 'Fetch multiple trees (like git-svnimport)',
141 \%fc_opts ],
142 'log' => [ \&show_log, 'Show commit logs',
143 { 'limit=i' => \$_limit,
144 'revision|r=s' => \$_revision,
145 'verbose|v' => \$_verbose,
146 'incremental' => \$_incremental,
147 'oneline' => \$_oneline,
148 'show-commit' => \$_show_commit,
149 'non-recursive' => \$_non_recursive,
150 'authors-file|A=s' => \$_authors,
151 'color' => \$_color,
152 'pager=s' => \$_pager,
153 } ],
154 'commit-diff' => [ \&commit_diff, 'Commit a diff between two trees',
155 { 'message|m=s' => \$_message,
156 'file|F=s' => \$_file,
157 'revision|r=s' => \$_revision,
158 %cmt_opts } ],
159 );
160
161 my $cmd;
162 for (my $i = 0; $i < @ARGV; $i++) {
163 if (defined $cmd{$ARGV[$i]}) {
164 $cmd = $ARGV[$i];
165 splice @ARGV, $i, 1;
166 last;
167 }
168 };
169
170 my %opts = %{$cmd{$cmd}->[2]} if (defined $cmd);
171
172 read_repo_config(\%opts);
173 my $rv = GetOptions(%opts, 'help|H|h' => \$_help,
174 'version|V' => \$_version,
175 'id|i=s' => \$GIT_SVN);
176 exit 1 if (!$rv && $cmd ne 'log');
177
178 set_default_vals();
179 usage(0) if $_help;
180 version() if $_version;
181 usage(1) unless defined $cmd;
182 init_vars();
183 load_authors() if $_authors;
184 load_all_refs() if $_branch_all_refs;
185 migration_check() unless $cmd =~ /^(?:init|rebuild|multi-init|commit-diff)$/;
186 $cmd{$cmd}->[0]->(@ARGV);
187 exit 0;
188
189 ####################### primary functions ######################
190 sub usage {
191 my $exit = shift || 0;
192 my $fd = $exit ? \*STDERR : \*STDOUT;
193 print $fd <<"";
194 git-svn - bidirectional operations between a single Subversion tree and git
195 Usage: $0 <command> [options] [arguments]\n
196
197 print $fd "Available commands:\n" unless $cmd;
198
199 foreach (sort keys %cmd) {
200 next if $cmd && $cmd ne $_;
201 print $fd ' ',pack('A17',$_),$cmd{$_}->[1],"\n";
202 foreach (keys %{$cmd{$_}->[2]}) {
203 # prints out arguments as they should be passed:
204 my $x = s#[:=]s$## ? '<arg>' : s#[:=]i$## ? '<num>' : '';
205 print $fd ' ' x 21, join(', ', map { length $_ > 1 ?
206 "--$_" : "-$_" }
207 split /\|/,$_)," $x\n";
208 }
209 }
210 print $fd <<"";
211 \nGIT_SVN_ID may be set in the environment or via the --id/-i switch to an
212 arbitrary identifier if you're tracking multiple SVN branches/repositories in
213 one git repository and want to keep them separate. See git-svn(1) for more
214 information.
215
216 exit $exit;
217 }
218
219 sub version {
220 print "git-svn version $VERSION (svn $SVN::Core::VERSION)\n";
221 exit 0;
222 }
223
224 sub rebuild {
225 if (!verify_ref("refs/remotes/$GIT_SVN^0")) {
226 copy_remote_ref();
227 }
228 $SVN_URL = shift or undef;
229 my $newest_rev = 0;
230 if ($_upgrade) {
231 command_noisy('update-ref',"refs/remotes/$GIT_SVN","
232 $GIT_SVN-HEAD");
233 } else {
234 check_upgrade_needed();
235 }
236
237 my ($rev_list, $ctx) = command_output_pipe("rev-list",
238 "refs/remotes/$GIT_SVN");
239 my $latest;
240 while (<$rev_list>) {
241 chomp;
242 my $c = $_;
243 croak "Non-SHA1: $c\n" unless $c =~ /^$sha1$/o;
244 my @commit = grep(/^git-svn-id: /,
245 command(qw/cat-file commit/, $c));
246 next if (!@commit); # skip merges
247 my ($url, $rev, $uuid) = extract_metadata($commit[$#commit]);
248 if (!defined $rev || !$uuid) {
249 croak "Unable to extract revision or UUID from ",
250 "$c, $commit[$#commit]\n";
251 }
252
253 # if we merged or otherwise started elsewhere, this is
254 # how we break out of it
255 next if (defined $SVN_UUID && ($uuid ne $SVN_UUID));
256 next if (defined $SVN_URL && defined $url && ($url ne $SVN_URL));
257
258 unless (defined $latest) {
259 if (!$SVN_URL && !$url) {
260 croak "SVN repository location required: $url\n";
261 }
262 $SVN_URL ||= $url;
263 $SVN_UUID ||= $uuid;
264 setup_git_svn();
265 $latest = $rev;
266 }
267 revdb_set($REVDB, $rev, $c);
268 print "r$rev = $c\n";
269 $newest_rev = $rev if ($rev > $newest_rev);
270 }
271 command_close_pipe($rev_list, $ctx);
272 }
273
274 sub init {
275 my $url = shift or die "SVN repository location required " .
276 "as a command-line argument\n";
277 $url =~ s!/+$!!; # strip trailing slash
278
279 if (my $repo_path = shift) {
280 unless (-d $repo_path) {
281 mkpath([$repo_path]);
282 }
283 $GIT_DIR = $ENV{GIT_DIR} = $repo_path . "/.git";
284 init_vars();
285 }
286
287 $SVN_URL = $url;
288 unless (-d $GIT_DIR) {
289 my @init_db = ('init');
290 push @init_db, "--template=$_template" if defined $_template;
291 push @init_db, "--shared" if defined $_shared;
292 command_noisy(@init_db);
293 }
294 setup_git_svn();
295 }
296
297 sub cmd_fetch {
298 fetch_child_id($GIT_SVN, @_);
299 }
300
301 sub fetch {
302 check_upgrade_needed();
303 $SVN_URL ||= file_to_s("$GIT_SVN_DIR/info/url");
304 my $ret = fetch_lib(@_);
305 if ($ret->{commit} && !verify_ref('refs/heads/master^0')) {
306 command_noisy(qw(update-ref refs/heads/master),$ret->{commit});
307 }
308 return $ret;
309 }
310
311 sub fetch_lib {
312 my (@parents) = @_;
313 $SVN_URL ||= file_to_s("$GIT_SVN_DIR/info/url");
314 $SVN ||= libsvn_connect($SVN_URL);
315 my ($last_rev, $last_commit) = svn_grab_base_rev();
316 my ($base, $head) = libsvn_parse_revision($last_rev);
317 if ($base > $head) {
318 return { revision => $last_rev, commit => $last_commit }
319 }
320 my $index = set_index($GIT_SVN_INDEX);
321
322 # limit ourselves and also fork() since get_log won't release memory
323 # after processing a revision and SVN stuff seems to leak
324 my $inc = 1000;
325 my ($min, $max) = ($base, $head < $base+$inc ? $head : $base+$inc);
326 read_uuid();
327 if (defined $last_commit) {
328 unless (-e $GIT_SVN_INDEX) {
329 command_noisy('read-tree', $last_commit);
330 }
331 my $x = command_oneline('write-tree');
332 my ($y) = (command(qw/cat-file commit/, $last_commit)
333 =~ /^tree ($sha1)/m);
334 if ($y ne $x) {
335 unlink $GIT_SVN_INDEX or croak $!;
336 command_noisy('read-tree', $last_commit);
337 }
338 $x = command_oneline('write-tree');
339 if ($y ne $x) {
340 print STDERR "trees ($last_commit) $y != $x\n",
341 "Something is seriously wrong...\n";
342 }
343 }
344 while (1) {
345 # fork, because using SVN::Pool with get_log() still doesn't
346 # seem to help enough to keep memory usage down.
347 defined(my $pid = fork) or croak $!;
348 if (!$pid) {
349 $SVN::Error::handler = \&libsvn_skip_unknown_revs;
350
351 # Yes I'm perfectly aware that the fourth argument
352 # below is the limit revisions number. Unfortunately
353 # performance sucks with it enabled, so it's much
354 # faster to fetch revision ranges instead of relying
355 # on the limiter.
356 libsvn_get_log(libsvn_dup_ra($SVN), [''],
357 $min, $max, 0, 1, 1,
358 sub {
359 my $log_msg;
360 if ($last_commit) {
361 $log_msg = libsvn_fetch(
362 $last_commit, @_);
363 $last_commit = git_commit(
364 $log_msg,
365 $last_commit,
366 @parents);
367 } else {
368 $log_msg = libsvn_new_tree(@_);
369 $last_commit = git_commit(
370 $log_msg, @parents);
371 }
372 });
373 exit 0;
374 }
375 waitpid $pid, 0;
376 croak $? if $?;
377 ($last_rev, $last_commit) = svn_grab_base_rev();
378 last if ($max >= $head);
379 $min = $max + 1;
380 $max += $inc;
381 $max = $head if ($max > $head);
382 $SVN = libsvn_connect($SVN_URL);
383 }
384 restore_index($index);
385 return { revision => $last_rev, commit => $last_commit };
386 }
387
388 sub commit {
389 my (@commits) = @_;
390 check_upgrade_needed();
391 if ($_stdin || !@commits) {
392 print "Reading from stdin...\n";
393 @commits = ();
394 while (<STDIN>) {
395 if (/\b($sha1_short)\b/o) {
396 unshift @commits, $1;
397 }
398 }
399 }
400 my @revs;
401 foreach my $c (@commits) {
402 my @tmp = command('rev-parse',$c);
403 if (scalar @tmp == 1) {
404 push @revs, $tmp[0];
405 } elsif (scalar @tmp > 1) {
406 push @revs, reverse(command('rev-list',@tmp));
407 } else {
408 die "Failed to rev-parse $c\n";
409 }
410 }
411 commit_lib(@revs);
412 print "Done committing ",scalar @revs," revisions to SVN\n";
413 }
414
415 sub commit_lib {
416 my (@revs) = @_;
417 my ($r_last, $cmt_last) = svn_grab_base_rev();
418 defined $r_last or die "Must have an existing revision to commit\n";
419 my $fetched = fetch();
420 if ($r_last != $fetched->{revision}) {
421 print STDERR "There are new revisions that were fetched ",
422 "and need to be merged (or acknowledged) ",
423 "before committing.\n",
424 "last rev: $r_last\n",
425 " current: $fetched->{revision}\n";
426 exit 1;
427 }
428 read_uuid();
429 my @lock = $SVN::Core::VERSION ge '1.2.0' ? (undef, 0) : ();
430 my $commit_msg = "$GIT_SVN_DIR/.svn-commit.tmp.$$";
431
432 my $repo;
433 set_svn_commit_env();
434 foreach my $c (@revs) {
435 my $log_msg = get_commit_message($c, $commit_msg);
436
437 # fork for each commit because there's a memory leak I
438 # can't track down... (it's probably in the SVN code)
439 defined(my $pid = open my $fh, '-|') or croak $!;
440 if (!$pid) {
441 my $ed = SVN::Git::Editor->new(
442 { r => $r_last,
443 ra => libsvn_dup_ra($SVN),
444 c => $c,
445 svn_path => $SVN->{svn_path},
446 },
447 $SVN->get_commit_editor(
448 $log_msg->{msg},
449 sub {
450 libsvn_commit_cb(
451 @_, $c,
452 $log_msg->{msg},
453 $r_last,
454 $cmt_last)
455 },
456 @lock)
457 );
458 my $mods = libsvn_checkout_tree($cmt_last, $c, $ed);
459 if (@$mods == 0) {
460 print "No changes\nr$r_last = $cmt_last\n";
461 $ed->abort_edit;
462 } else {
463 $ed->close_edit;
464 }
465 exit 0;
466 }
467 my ($r_new, $cmt_new, $no);
468 while (<$fh>) {
469 print $_;
470 chomp;
471 if (/^r(\d+) = ($sha1)$/o) {
472 ($r_new, $cmt_new) = ($1, $2);
473 } elsif ($_ eq 'No changes') {
474 $no = 1;
475 }
476 }
477 close $fh or exit 1;
478 if (! defined $r_new && ! defined $cmt_new) {
479 unless ($no) {
480 die "Failed to parse revision information\n";
481 }
482 } else {
483 ($r_last, $cmt_last) = ($r_new, $cmt_new);
484 }
485 }
486 $ENV{LC_ALL} = 'C';
487 unlink $commit_msg;
488 }
489
490 sub dcommit {
491 my $head = shift || 'HEAD';
492 my $gs = "refs/remotes/$GIT_SVN";
493 my @refs = command(qw/rev-list --no-merges/, "$gs..$head");
494 my $last_rev;
495 foreach my $d (reverse @refs) {
496 if (!verify_ref("$d~1")) {
497 die "Commit $d\n",
498 "has no parent commit, and therefore ",
499 "nothing to diff against.\n",
500 "You should be working from a repository ",
501 "originally created by git-svn\n";
502 }
503 unless (defined $last_rev) {
504 (undef, $last_rev, undef) = cmt_metadata("$d~1");
505 unless (defined $last_rev) {
506 die "Unable to extract revision information ",
507 "from commit $d~1\n";
508 }
509 }
510 if ($_dry_run) {
511 print "diff-tree $d~1 $d\n";
512 } else {
513 if (my $r = commit_diff("$d~1", $d, undef, $last_rev)) {
514 $last_rev = $r;
515 } # else: no changes, same $last_rev
516 }
517 }
518 return if $_dry_run;
519 fetch();
520 my @diff = command('diff-tree', 'HEAD', $gs, '--');
521 my @finish;
522 if (@diff) {
523 @finish = qw/rebase/;
524 push @finish, qw/--merge/ if $_merge;
525 push @finish, "--strategy=$_strategy" if $_strategy;
526 print STDERR "W: HEAD and $gs differ, using @finish:\n", @diff;
527 } else {
528 print "No changes between current HEAD and $gs\n",
529 "Resetting to the latest $gs\n";
530 @finish = qw/reset --mixed/;
531 }
532 command_noisy(@finish, $gs);
533 }
534
535 sub show_ignore {
536 $SVN_URL ||= file_to_s("$GIT_SVN_DIR/info/url");
537 my $repo;
538 $SVN ||= libsvn_connect($SVN_URL);
539 my $r = defined $_revision ? $_revision : $SVN->get_latest_revnum;
540 libsvn_traverse_ignore(\*STDOUT, '', $r);
541 }
542
543 sub graft_branches {
544 my $gr_file = "$GIT_DIR/info/grafts";
545 my ($grafts, $comments) = read_grafts($gr_file);
546 my $gr_sha1;
547
548 if (%$grafts) {
549 # temporarily disable our grafts file to make this idempotent
550 chomp($gr_sha1 = command(qw/hash-object -w/,$gr_file));
551 rename $gr_file, "$gr_file~$gr_sha1" or croak $!;
552 }
553
554 my $l_map = read_url_paths();
555 my @re = map { qr/$_/is } @_opt_m if @_opt_m;
556 unless ($_no_default_regex) {
557 push @re, (qr/\b(?:merge|merging|merged)\s+with\s+([\w\.\-]+)/i,
558 qr/\b(?:merge|merging|merged)\s+([\w\.\-]+)/i,
559 qr/\b(?:from|of)\s+([\w\.\-]+)/i );
560 }
561 foreach my $u (keys %$l_map) {
562 if (@re) {
563 foreach my $p (keys %{$l_map->{$u}}) {
564 graft_merge_msg($grafts,$l_map,$u,$p,@re);
565 }
566 }
567 unless ($_no_graft_copy) {
568 graft_file_copy_lib($grafts,$l_map,$u);
569 }
570 }
571 graft_tree_joins($grafts);
572
573 write_grafts($grafts, $comments, $gr_file);
574 unlink "$gr_file~$gr_sha1" if $gr_sha1;
575 }
576
577 sub multi_init {
578 my $url = shift;
579 unless (defined $_trunk || defined $_branches || defined $_tags) {
580 usage(1);
581 }
582 if (defined $_trunk) {
583 my $trunk_url = complete_svn_url($url, $_trunk);
584 my $ch_id;
585 if ($GIT_SVN eq 'git-svn') {
586 $ch_id = 1;
587 $GIT_SVN = $ENV{GIT_SVN_ID} = 'trunk';
588 }
589 init_vars();
590 unless (-d $GIT_SVN_DIR) {
591 if ($ch_id) {
592 print "GIT_SVN_ID set to 'trunk' for ",
593 "$trunk_url ($_trunk)\n";
594 }
595 init($trunk_url);
596 command_noisy('repo-config', 'svn.trunk', $trunk_url);
597 }
598 }
599 $_prefix = '' unless defined $_prefix;
600 complete_url_ls_init($url, $_branches, '--branches/-b', $_prefix);
601 complete_url_ls_init($url, $_tags, '--tags/-t', $_prefix . 'tags/');
602 }
603
604 sub multi_fetch {
605 # try to do trunk first, since branches/tags
606 # may be descended from it.
607 if (-e "$GIT_DIR/svn/trunk/info/url") {
608 fetch_child_id('trunk', @_);
609 }
610 rec_fetch('', "$GIT_DIR/svn", @_);
611 }
612
613 sub show_log {
614 my (@args) = @_;
615 my ($r_min, $r_max);
616 my $r_last = -1; # prevent dupes
617 rload_authors() if $_authors;
618 if (defined $TZ) {
619 $ENV{TZ} = $TZ;
620 } else {
621 delete $ENV{TZ};
622 }
623 if (defined $_revision) {
624 if ($_revision =~ /^(\d+):(\d+)$/) {
625 ($r_min, $r_max) = ($1, $2);
626 } elsif ($_revision =~ /^\d+$/) {
627 $r_min = $r_max = $_revision;
628 } else {
629 print STDERR "-r$_revision is not supported, use ",
630 "standard \'git log\' arguments instead\n";
631 exit 1;
632 }
633 }
634
635 config_pager();
636 @args = (git_svn_log_cmd($r_min, $r_max), @args);
637 my $log = command_output_pipe(@args);
638 run_pager();
639 my (@k, $c, $d);
640
641 while (<$log>) {
642 if (/^${_esc_color}commit ($sha1_short)/o) {
643 my $cmt = $1;
644 if ($c && cmt_showable($c) && $c->{r} != $r_last) {
645 $r_last = $c->{r};
646 process_commit($c, $r_min, $r_max, \@k) or
647 goto out;
648 }
649 $d = undef;
650 $c = { c => $cmt };
651 } elsif (/^${_esc_color}author (.+) (\d+) ([\-\+]?\d+)$/) {
652 get_author_info($c, $1, $2, $3);
653 } elsif (/^${_esc_color}(?:tree|parent|committer) /) {
654 # ignore
655 } elsif (/^${_esc_color}:\d{6} \d{6} $sha1_short/o) {
656 push @{$c->{raw}}, $_;
657 } elsif (/^${_esc_color}[ACRMDT]\t/) {
658 # we could add $SVN->{svn_path} here, but that requires
659 # remote access at the moment (repo_path_split)...
660 s#^(${_esc_color})([ACRMDT])\t#$1 $2 #;
661 push @{$c->{changed}}, $_;
662 } elsif (/^${_esc_color}diff /) {
663 $d = 1;
664 push @{$c->{diff}}, $_;
665 } elsif ($d) {
666 push @{$c->{diff}}, $_;
667 } elsif (/^${_esc_color} (git-svn-id:.+)$/) {
668 ($c->{url}, $c->{r}, undef) = extract_metadata($1);
669 } elsif (s/^${_esc_color} //) {
670 push @{$c->{l}}, $_;
671 }
672 }
673 if ($c && defined $c->{r} && $c->{r} != $r_last) {
674 $r_last = $c->{r};
675 process_commit($c, $r_min, $r_max, \@k);
676 }
677 if (@k) {
678 my $swap = $r_max;
679 $r_max = $r_min;
680 $r_min = $swap;
681 process_commit($_, $r_min, $r_max) foreach reverse @k;
682 }
683 out:
684 eval { command_close_pipe($log) };
685 print '-' x72,"\n" unless $_incremental || $_oneline;
686 }
687
688 sub commit_diff_usage {
689 print STDERR "Usage: $0 commit-diff <tree-ish> <tree-ish> [<URL>]\n";
690 exit 1
691 }
692
693 sub commit_diff {
694 my $ta = shift or commit_diff_usage();
695 my $tb = shift or commit_diff_usage();
696 if (!eval { $SVN_URL = shift || file_to_s("$GIT_SVN_DIR/info/url") }) {
697 print STDERR "Needed URL or usable git-svn id command-line\n";
698 commit_diff_usage();
699 }
700 my $r = shift;
701 unless (defined $r) {
702 if (defined $_revision) {
703 $r = $_revision
704 } else {
705 die "-r|--revision is a required argument\n";
706 }
707 }
708 if (defined $_message && defined $_file) {
709 print STDERR "Both --message/-m and --file/-F specified ",
710 "for the commit message.\n",
711 "I have no idea what you mean\n";
712 exit 1;
713 }
714 if (defined $_file) {
715 $_message = file_to_s($_file);
716 } else {
717 $_message ||= get_commit_message($tb,
718 "$GIT_DIR/.svn-commit.tmp.$$")->{msg};
719 }
720 $SVN ||= libsvn_connect($SVN_URL);
721 if ($r eq 'HEAD') {
722 $r = $SVN->get_latest_revnum;
723 } elsif ($r !~ /^\d+$/) {
724 die "revision argument: $r not understood by git-svn\n";
725 }
726 my @lock = $SVN::Core::VERSION ge '1.2.0' ? (undef, 0) : ();
727 my $rev_committed;
728 my $ed = SVN::Git::Editor->new({ r => $r,
729 ra => libsvn_dup_ra($SVN),
730 c => $tb,
731 svn_path => $SVN->{svn_path}
732 },
733 $SVN->get_commit_editor($_message,
734 sub {
735 $rev_committed = $_[0];
736 print "Committed $_[0]\n";
737 }, @lock)
738 );
739 eval {
740 my $mods = libsvn_checkout_tree($ta, $tb, $ed);
741 if (@$mods == 0) {
742 print "No changes\n$ta == $tb\n";
743 $ed->abort_edit;
744 } else {
745 $ed->close_edit;
746 }
747 };
748 fatal "$@\n" if $@;
749 $_message = $_file = undef;
750 return $rev_committed;
751 }
752
753 ########################### utility functions #########################
754
755 sub cmt_showable {
756 my ($c) = @_;
757 return 1 if defined $c->{r};
758 if ($c->{l} && $c->{l}->[-1] eq "...\n" &&
759 $c->{a_raw} =~ /\@([a-f\d\-]+)>$/) {
760 my @msg = command(qw/cat-file commit/, $c->{c});
761 shift @msg while ($msg[0] ne "\n");
762 shift @msg;
763 @{$c->{l}} = grep !/^git-svn-id: /, @msg;
764
765 (undef, $c->{r}, undef) = extract_metadata(
766 (grep(/^git-svn-id: /, @msg))[-1]);
767 }
768 return defined $c->{r};
769 }
770
771 sub log_use_color {
772 return 1 if $_color;
773 my ($dc, $dcvar);
774 $dcvar = 'color.diff';
775 $dc = `git-repo-config --get $dcvar`;
776 if ($dc eq '') {
777 # nothing at all; fallback to "diff.color"
778 $dcvar = 'diff.color';
779 $dc = `git-repo-config --get $dcvar`;
780 }
781 chomp($dc);
782 if ($dc eq 'auto') {
783 my $pc;
784 $pc = `git-repo-config --get color.pager`;
785 if ($pc eq '') {
786 # does not have it -- fallback to pager.color
787 $pc = `git-repo-config --bool --get pager.color`;
788 }
789 else {
790 $pc = `git-repo-config --bool --get color.pager`;
791 if ($?) {
792 $pc = 'false';
793 }
794 }
795 chomp($pc);
796 if (-t *STDOUT || (defined $_pager && $pc eq 'true')) {
797 return ($ENV{TERM} && $ENV{TERM} ne 'dumb');
798 }
799 return 0;
800 }
801 return 0 if $dc eq 'never';
802 return 1 if $dc eq 'always';
803 chomp($dc = `git-repo-config --bool --get $dcvar`);
804 return ($dc eq 'true');
805 }
806
807 sub git_svn_log_cmd {
808 my ($r_min, $r_max) = @_;
809 my @cmd = (qw/log --abbrev-commit --pretty=raw
810 --default/, "refs/remotes/$GIT_SVN");
811 push @cmd, '-r' unless $_non_recursive;
812 push @cmd, qw/--raw --name-status/ if $_verbose;
813 push @cmd, '--color' if log_use_color();
814 return @cmd unless defined $r_max;
815 if ($r_max == $r_min) {
816 push @cmd, '--max-count=1';
817 if (my $c = revdb_get($REVDB, $r_max)) {
818 push @cmd, $c;
819 }
820 } else {
821 my ($c_min, $c_max);
822 $c_max = revdb_get($REVDB, $r_max);
823 $c_min = revdb_get($REVDB, $r_min);
824 if (defined $c_min && defined $c_max) {
825 if ($r_max > $r_max) {
826 push @cmd, "$c_min..$c_max";
827 } else {
828 push @cmd, "$c_max..$c_min";
829 }
830 } elsif ($r_max > $r_min) {
831 push @cmd, $c_max;
832 } else {
833 push @cmd, $c_min;
834 }
835 }
836 return @cmd;
837 }
838
839 sub fetch_child_id {
840 my $id = shift;
841 print "Fetching $id\n";
842 my $ref = "$GIT_DIR/refs/remotes/$id";
843 defined(my $pid = open my $fh, '-|') or croak $!;
844 if (!$pid) {
845 $GIT_SVN = $ENV{GIT_SVN_ID} = $id;
846 init_vars();
847 fetch(@_);
848 exit 0;
849 }
850 while (<$fh>) {
851 print $_;
852 check_repack() if (/^r\d+ = $sha1/o);
853 }
854 close $fh or croak $?;
855 }
856
857 sub rec_fetch {
858 my ($pfx, $p, @args) = @_;
859 my @dir;
860 foreach (sort <$p/*>) {
861 if (-r "$_/info/url") {
862 $pfx .= '/' if $pfx && $pfx !~ m!/$!;
863 my $id = $pfx . basename $_;
864 next if $id eq 'trunk';
865 fetch_child_id($id, @args);
866 } elsif (-d $_) {
867 push @dir, $_;
868 }
869 }
870 foreach (@dir) {
871 my $x = $_;
872 $x =~ s!^\Q$GIT_DIR\E/svn/!!;
873 rec_fetch($x, $_);
874 }
875 }
876
877 sub complete_svn_url {
878 my ($url, $path) = @_;
879 $path =~ s#/+$##;
880 $url =~ s#/+$## if $url;
881 if ($path !~ m#^[a-z\+]+://#) {
882 $path = '/' . $path if ($path !~ m#^/#);
883 if (!defined $url || $url !~ m#^[a-z\+]+://#) {
884 fatal("E: '$path' is not a complete URL ",
885 "and a separate URL is not specified\n");
886 }
887 $path = $url . $path;
888 }
889 return $path;
890 }
891
892 sub complete_url_ls_init {
893 my ($url, $path, $switch, $pfx) = @_;
894 unless ($path) {
895 print STDERR "W: $switch not specified\n";
896 return;
897 }
898 my $full_url = complete_svn_url($url, $path);
899 my @ls = libsvn_ls_fullurl($full_url);
900 defined(my $pid = fork) or croak $!;
901 if (!$pid) {
902 foreach my $u (map { "$full_url/$_" } (grep m!/$!, @ls)) {
903 $u =~ s#/+$##;
904 if ($u !~ m!\Q$full_url\E/(.+)$!) {
905 print STDERR "W: Unrecognized URL: $u\n";
906 die "This should never happen\n";
907 }
908 # don't try to init already existing refs
909 my $id = $pfx.$1;
910 $GIT_SVN = $ENV{GIT_SVN_ID} = $id;
911 init_vars();
912 unless (-d $GIT_SVN_DIR) {
913 print "init $u => $id\n";
914 init($u);
915 }
916 }
917 exit 0;
918 }
919 waitpid $pid, 0;
920 croak $? if $?;
921 my ($n) = ($switch =~ /^--(\w+)/);
922 command_noisy('repo-config', "svn.$n", $full_url);
923 }
924
925 sub common_prefix {
926 my $paths = shift;
927 my %common;
928 foreach (@$paths) {
929 my @tmp = split m#/#, $_;
930 my $p = '';
931 while (my $x = shift @tmp) {
932 $p .= "/$x";
933 $common{$p} ||= 0;
934 $common{$p}++;
935 }
936 }
937 foreach (sort {length $b <=> length $a} keys %common) {
938 if ($common{$_} == @$paths) {
939 return $_;
940 }
941 }
942 return '';
943 }
944
945 # grafts set here are 'stronger' in that they're based on actual tree
946 # matches, and won't be deleted from merge-base checking in write_grafts()
947 sub graft_tree_joins {
948 my $grafts = shift;
949 map_tree_joins() if (@_branch_from && !%tree_map);
950 return unless %tree_map;
951
952 git_svn_each(sub {
953 my $i = shift;
954 my @args = (qw/rev-list --pretty=raw/, "refs/remotes/$i");
955 my ($fh, $ctx) = command_output_pipe(@args);
956 while (<$fh>) {
957 next unless /^commit ($sha1)$/o;
958 my $c = $1;
959 my ($t) = (<$fh> =~ /^tree ($sha1)$/o);
960 next unless $tree_map{$t};
961
962 my $l;
963 do {
964 $l = readline $fh;
965 } until ($l =~ /^committer (?:.+) (\d+) ([\-\+]?\d+)$/);
966
967 my ($s, $tz) = ($1, $2);
968 if ($tz =~ s/^\+//) {
969 $s += tz_to_s_offset($tz);
970 } elsif ($tz =~ s/^\-//) {
971 $s -= tz_to_s_offset($tz);
972 }
973
974 my ($url_a, $r_a, $uuid_a) = cmt_metadata($c);
975
976 foreach my $p (@{$tree_map{$t}}) {
977 next if $p eq $c;
978 my $mb = eval { command('merge-base', $c, $p) };
979 next unless ($@ || $?);
980 if (defined $r_a) {
981 # see if SVN says it's a relative
982 my ($url_b, $r_b, $uuid_b) =
983 cmt_metadata($p);
984 next if (defined $url_b &&
985 defined $url_a &&
986 ($url_a eq $url_b) &&
987 ($uuid_a eq $uuid_b));
988 if ($uuid_a eq $uuid_b) {
989 if ($r_b < $r_a) {
990 $grafts->{$c}->{$p} = 2;
991 next;
992 } elsif ($r_b > $r_a) {
993 $grafts->{$p}->{$c} = 2;
994 next;
995 }
996 }
997 }
998 my $ct = get_commit_time($p);
999 if ($ct < $s) {
1000 $grafts->{$c}->{$p} = 2;
1001 } elsif ($ct > $s) {
1002 $grafts->{$p}->{$c} = 2;
1003 }
1004 # what should we do when $ct == $s ?
1005 }
1006 }
1007 command_close_pipe($fh, $ctx);
1008 });
1009 }
1010
1011 sub graft_file_copy_lib {
1012 my ($grafts, $l_map, $u) = @_;
1013 my $tree_paths = $l_map->{$u};
1014 my $pfx = common_prefix([keys %$tree_paths]);
1015 my ($repo, $path) = repo_path_split($u.$pfx);
1016 $SVN = libsvn_connect($repo);
1017
1018 my ($base, $head) = libsvn_parse_revision();
1019 my $inc = 1000;
1020 my ($min, $max) = ($base, $head < $base+$inc ? $head : $base+$inc);
1021 my $eh = $SVN::Error::handler;
1022 $SVN::Error::handler = \&libsvn_skip_unknown_revs;
1023 while (1) {
1024 my $pool = SVN::Pool->new;
1025 libsvn_get_log(libsvn_dup_ra($SVN), [$path],
1026 $min, $max, 0, 2, 1,
1027 sub {
1028 libsvn_graft_file_copies($grafts, $tree_paths,
1029 $path, @_);
1030 }, $pool);
1031 $pool->clear;
1032 last if ($max >= $head);
1033 $min = $max + 1;
1034 $max += $inc;
1035 $max = $head if ($max > $head);
1036 }
1037 $SVN::Error::handler = $eh;
1038 }
1039
1040 sub process_merge_msg_matches {
1041 my ($grafts, $l_map, $u, $p, $c, @matches) = @_;
1042 my (@strong, @weak);
1043 foreach (@matches) {
1044 # merging with ourselves is not interesting
1045 next if $_ eq $p;
1046 if ($l_map->{$u}->{$_}) {
1047 push @strong, $_;
1048 } else {
1049 push @weak, $_;
1050 }
1051 }
1052 foreach my $w (@weak) {
1053 last if @strong;
1054 # no exact match, use branch name as regexp.
1055 my $re = qr/\Q$w\E/i;
1056 foreach (keys %{$l_map->{$u}}) {
1057 if (/$re/) {
1058 push @strong, $l_map->{$u}->{$_};
1059 last;
1060 }
1061 }
1062 last if @strong;
1063 $w = basename($w);
1064 $re = qr/\Q$w\E/i;
1065 foreach (keys %{$l_map->{$u}}) {
1066 if (/$re/) {
1067 push @strong, $l_map->{$u}->{$_};
1068 last;
1069 }
1070 }
1071 }
1072 my ($rev) = ($c->{m} =~ /^git-svn-id:\s(?:\S+?)\@(\d+)
1073 \s(?:[a-f\d\-]+)$/xsm);
1074 unless (defined $rev) {
1075 ($rev) = ($c->{m} =~/^git-svn-id:\s(\d+)
1076 \@(?:[a-f\d\-]+)/xsm);
1077 return unless defined $rev;
1078 }
1079 foreach my $m (@strong) {
1080 my ($r0, $s0) = find_rev_before($rev, $m, 1);
1081 $grafts->{$c->{c}}->{$s0} = 1 if defined $s0;
1082 }
1083 }
1084
1085 sub graft_merge_msg {
1086 my ($grafts, $l_map, $u, $p, @re) = @_;
1087
1088 my $x = $l_map->{$u}->{$p};
1089 my $rl = rev_list_raw("refs/remotes/$x");
1090 while (my $c = next_rev_list_entry($rl)) {
1091 foreach my $re (@re) {
1092 my (@br) = ($c->{m} =~ /$re/g);
1093 next unless @br;
1094 process_merge_msg_matches($grafts,$l_map,$u,$p,$c,@br);
1095 }
1096 }
1097 }
1098
1099 sub read_uuid {
1100 return if $SVN_UUID;
1101 my $pool = SVN::Pool->new;
1102 $SVN_UUID = $SVN->get_uuid($pool);
1103 $pool->clear;
1104 }
1105
1106 sub verify_ref {
1107 my ($ref) = @_;
1108 eval { command_oneline([ 'rev-parse', '--verify', $ref ],
1109 { STDERR => 0 }); };
1110 }
1111
1112 sub repo_path_split {
1113 my $full_url = shift;
1114 $full_url =~ s#/+$##;
1115
1116 foreach (@repo_path_split_cache) {
1117 if ($full_url =~ s#$_##) {
1118 my $u = $1;
1119 $full_url =~ s#^/+##;
1120 return ($u, $full_url);
1121 }
1122 }
1123 my $tmp = libsvn_connect($full_url);
1124 return ($tmp->{repos_root}, $tmp->{svn_path});
1125 }
1126
1127 sub setup_git_svn {
1128 defined $SVN_URL or croak "SVN repository location required\n";
1129 unless (-d $GIT_DIR) {
1130 croak "GIT_DIR=$GIT_DIR does not exist!\n";
1131 }
1132 mkpath([$GIT_SVN_DIR]);
1133 mkpath(["$GIT_SVN_DIR/info"]);
1134 open my $fh, '>>',$REVDB or croak $!;
1135 close $fh;
1136 s_to_file($SVN_URL,"$GIT_SVN_DIR/info/url");
1137
1138 }
1139
1140 sub get_tree_from_treeish {
1141 my ($treeish) = @_;
1142 croak "Not a sha1: $treeish\n" unless $treeish =~ /^$sha1$/o;
1143 my $type = command_oneline(qw/cat-file -t/, $treeish);
1144 my $expected;
1145 while ($type eq 'tag') {
1146 ($treeish, $type) = command(qw/cat-file tag/, $treeish);
1147 }
1148 if ($type eq 'commit') {
1149 $expected = (grep /^tree /, command(qw/cat-file commit/,
1150 $treeish))[0];
1151 ($expected) = ($expected =~ /^tree ($sha1)$/);
1152 die "Unable to get tree from $treeish\n" unless $expected;
1153 } elsif ($type eq 'tree') {
1154 $expected = $treeish;
1155 } else {
1156 die "$treeish is a $type, expected tree, tag or commit\n";
1157 }
1158 return $expected;
1159 }
1160
1161 sub get_diff {
1162 my ($from, $treeish) = @_;
1163 print "diff-tree $from $treeish\n";
1164 my @diff_tree = qw(diff-tree -z -r);
1165 if ($_cp_similarity) {
1166 push @diff_tree, "-C$_cp_similarity";
1167 } else {
1168 push @diff_tree, '-C';
1169 }
1170 push @diff_tree, '--find-copies-harder' if $_find_copies_harder;
1171 push @diff_tree, "-l$_l" if defined $_l;
1172 push @diff_tree, $from, $treeish;
1173 my ($diff_fh, $ctx) = command_output_pipe(@diff_tree);
1174 local $/ = "\0";
1175 my $state = 'meta';
1176 my @mods;
1177 while (<$diff_fh>) {
1178 chomp $_; # this gets rid of the trailing "\0"
1179 if ($state eq 'meta' && /^:(\d{6})\s(\d{6})\s
1180 $sha1\s($sha1)\s([MTCRAD])\d*$/xo) {
1181 push @mods, { mode_a => $1, mode_b => $2,
1182 sha1_b => $3, chg => $4 };
1183 if ($4 =~ /^(?:C|R)$/) {
1184 $state = 'file_a';
1185 } else {
1186 $state = 'file_b';
1187 }
1188 } elsif ($state eq 'file_a') {
1189 my $x = $mods[$#mods] or croak "Empty array\n";
1190 if ($x->{chg} !~ /^(?:C|R)$/) {
1191 croak "Error parsing $_, $x->{chg}\n";
1192 }
1193 $x->{file_a} = $_;
1194 $state = 'file_b';
1195 } elsif ($state eq 'file_b') {
1196 my $x = $mods[$#mods] or croak "Empty array\n";
1197 if (exists $x->{file_a} && $x->{chg} !~ /^(?:C|R)$/) {
1198 croak "Error parsing $_, $x->{chg}\n";
1199 }
1200 if (!exists $x->{file_a} && $x->{chg} =~ /^(?:C|R)$/) {
1201 croak "Error parsing $_, $x->{chg}\n";
1202 }
1203 $x->{file_b} = $_;
1204 $state = 'meta';
1205 } else {
1206 croak "Error parsing $_\n";
1207 }
1208 }
1209 command_close_pipe($diff_fh, $ctx);
1210 return \@mods;
1211 }
1212
1213 sub libsvn_checkout_tree {
1214 my ($from, $treeish, $ed) = @_;
1215 my $mods = get_diff($from, $treeish);
1216 return $mods unless (scalar @$mods);
1217 my %o = ( D => 1, R => 0, C => -1, A => 3, M => 3, T => 3 );
1218 foreach my $m (sort { $o{$a->{chg}} <=> $o{$b->{chg}} } @$mods) {
1219 my $f = $m->{chg};
1220 if (defined $o{$f}) {
1221 $ed->$f($m, $_q);
1222 } else {
1223 croak "Invalid change type: $f\n";
1224 }
1225 }
1226 $ed->rmdirs($_q) if $_rmdir;
1227 return $mods;
1228 }
1229
1230 sub get_commit_message {
1231 my ($commit, $commit_msg) = (@_);
1232 my %log_msg = ( msg => '' );
1233 open my $msg, '>', $commit_msg or croak $!;
1234
1235 my $type = command_oneline(qw/cat-file -t/, $commit);
1236 if ($type eq 'commit' || $type eq 'tag') {
1237 my ($msg_fh, $ctx) = command_output_pipe('cat-file',
1238 $type, $commit);
1239 my $in_msg = 0;
1240 while (<$msg_fh>) {
1241 if (!$in_msg) {
1242 $in_msg = 1 if (/^\s*$/);
1243 } elsif (/^git-svn-id: /) {
1244 # skip this, we regenerate the correct one
1245 # on re-fetch anyways
1246 } else {
1247 print $msg $_ or croak $!;
1248 }
1249 }
1250 command_close_pipe($msg_fh, $ctx);
1251 }
1252 close $msg or croak $!;
1253
1254 if ($_edit || ($type eq 'tree')) {
1255 my $editor = $ENV{VISUAL} || $ENV{EDITOR} || 'vi';
1256 system($editor, $commit_msg);
1257 }
1258
1259 # file_to_s removes all trailing newlines, so just use chomp() here:
1260 open $msg, '<', $commit_msg or croak $!;
1261 { local $/; chomp($log_msg{msg} = <$msg>); }
1262 close $msg or croak $!;
1263
1264 return \%log_msg;
1265 }
1266
1267 sub set_svn_commit_env {
1268 if (defined $LC_ALL) {
1269 $ENV{LC_ALL} = $LC_ALL;
1270 } else {
1271 delete $ENV{LC_ALL};
1272 }
1273 }
1274
1275 sub rev_list_raw {
1276 my ($fh, $c) = command_output_pipe(qw/rev-list --pretty=raw/, @_);
1277 return { fh => $fh, ctx => $c, t => { } };
1278 }
1279
1280 sub next_rev_list_entry {
1281 my $rl = shift;
1282 my $fh = $rl->{fh};
1283 my $x = $rl->{t};
1284 while (<$fh>) {
1285 if (/^commit ($sha1)$/o) {
1286 if ($x->{c}) {
1287 $rl->{t} = { c => $1 };
1288 return $x;
1289 } else {
1290 $x->{c} = $1;
1291 }
1292 } elsif (/^parent ($sha1)$/o) {
1293 $x->{p}->{$1} = 1;
1294 } elsif (s/^ //) {
1295 $x->{m} ||= '';
1296 $x->{m} .= $_;
1297 }
1298 }
1299 command_close_pipe($fh, $rl->{ctx});
1300 return ($x != $rl->{t}) ? $x : undef;
1301 }
1302
1303 sub s_to_file {
1304 my ($str, $file, $mode) = @_;
1305 open my $fd,'>',$file or croak $!;
1306 print $fd $str,"\n" or croak $!;
1307 close $fd or croak $!;
1308 chmod ($mode &~ umask, $file) if (defined $mode);
1309 }
1310
1311 sub file_to_s {
1312 my $file = shift;
1313 open my $fd,'<',$file or croak "$!: file: $file\n";
1314 local $/;
1315 my $ret = <$fd>;
1316 close $fd or croak $!;
1317 $ret =~ s/\s*$//s;
1318 return $ret;
1319 }
1320
1321 sub assert_revision_unknown {
1322 my $r = shift;
1323 if (my $c = revdb_get($REVDB, $r)) {
1324 croak "$r = $c already exists! Why are we refetching it?";
1325 }
1326 }
1327
1328 sub git_commit {
1329 my ($log_msg, @parents) = @_;
1330 assert_revision_unknown($log_msg->{revision});
1331 map_tree_joins() if (@_branch_from && !%tree_map);
1332
1333 my (@tmp_parents, @exec_parents, %seen_parent);
1334 if (my $lparents = $log_msg->{parents}) {
1335 @tmp_parents = @$lparents
1336 }
1337 # commit parents can be conditionally bound to a particular
1338 # svn revision via: "svn_revno=commit_sha1", filter them out here:
1339 foreach my $p (@parents) {
1340 next unless defined $p;
1341 if ($p =~ /^(\d+)=($sha1_short)$/o) {
1342 if ($1 == $log_msg->{revision}) {
1343 push @tmp_parents, $2;
1344 }
1345 } else {
1346 push @tmp_parents, $p if $p =~ /$sha1_short/o;
1347 }
1348 }
1349 my $tree = $log_msg->{tree};
1350 if (!defined $tree) {
1351 my $index = set_index($GIT_SVN_INDEX);
1352 $tree = command_oneline('write-tree');
1353 croak $? if $?;
1354 restore_index($index);
1355 }
1356 # just in case we clobber the existing ref, we still want that ref
1357 # as our parent:
1358 if (my $cur = verify_ref("refs/remotes/$GIT_SVN^0")) {
1359 chomp $cur;
1360 push @tmp_parents, $cur;
1361 }
1362
1363 if (exists $tree_map{$tree}) {
1364 foreach my $p (@{$tree_map{$tree}}) {
1365 my $skip;
1366 foreach (@tmp_parents) {
1367 # see if a common parent is found
1368 my $mb = eval { command('merge-base', $_, $p) };
1369 next if ($@ || $?);
1370 $skip = 1;
1371 last;
1372 }
1373 next if $skip;
1374 my ($url_p, $r_p, $uuid_p) = cmt_metadata($p);
1375 next if (($SVN_UUID eq $uuid_p) &&
1376 ($log_msg->{revision} > $r_p));
1377 next if (defined $url_p && defined $SVN_URL &&
1378 ($SVN_UUID eq $uuid_p) &&
1379 ($url_p eq $SVN_URL));
1380 push @tmp_parents, $p;
1381 }
1382 }
1383 foreach (@tmp_parents) {
1384 next if $seen_parent{$_};
1385 $seen_parent{$_} = 1;
1386 push @exec_parents, $_;
1387 # MAXPARENT is defined to 16 in commit-tree.c:
1388 last if @exec_parents > 16;
1389 }
1390
1391 set_commit_env($log_msg);
1392 my @exec = ('git-commit-tree', $tree);
1393 push @exec, '-p', $_ foreach @exec_parents;
1394 defined(my $pid = open3(my $msg_fh, my $out_fh, '>&STDERR', @exec))
1395 or croak $!;
1396 print $msg_fh $log_msg->{msg} or croak $!;
1397 unless ($_no_metadata) {
1398 print $msg_fh "\ngit-svn-id: $SVN_URL\@$log_msg->{revision}",
1399 " $SVN_UUID\n" or croak $!;
1400 }
1401 $msg_fh->flush == 0 or croak $!;
1402 close $msg_fh or croak $!;
1403 chomp(my $commit = do { local $/; <$out_fh> });
1404 close $out_fh or croak $!;
1405 waitpid $pid, 0;
1406 croak $? if $?;
1407 if ($commit !~ /^$sha1$/o) {
1408 die "Failed to commit, invalid sha1: $commit\n";
1409 }
1410 command_noisy('update-ref',"refs/remotes/$GIT_SVN",$commit);
1411 revdb_set($REVDB, $log_msg->{revision}, $commit);
1412
1413 # this output is read via pipe, do not change:
1414 print "r$log_msg->{revision} = $commit\n";
1415 return $commit;
1416 }
1417
1418 sub check_repack {
1419 if ($_repack && (--$_repack_nr == 0)) {
1420 $_repack_nr = $_repack;
1421 # repack doesn't use any arguments with spaces in them, does it?
1422 command_noisy('repack', split(/\s+/, $_repack_flags));
1423 }
1424 }
1425
1426 sub set_commit_env {
1427 my ($log_msg) = @_;
1428 my $author = $log_msg->{author};
1429 if (!defined $author || length $author == 0) {
1430 $author = '(no author)';
1431 }
1432 my ($name,$email) = defined $users{$author} ? @{$users{$author}}
1433 : ($author,"$author\@$SVN_UUID");
1434 $ENV{GIT_AUTHOR_NAME} = $ENV{GIT_COMMITTER_NAME} = $name;
1435 $ENV{GIT_AUTHOR_EMAIL} = $ENV{GIT_COMMITTER_EMAIL} = $email;
1436 $ENV{GIT_AUTHOR_DATE} = $ENV{GIT_COMMITTER_DATE} = $log_msg->{date};
1437 }
1438
1439 sub check_upgrade_needed {
1440 if (!-r $REVDB) {
1441 -d $GIT_SVN_DIR or mkpath([$GIT_SVN_DIR]);
1442 open my $fh, '>>',$REVDB or croak $!;
1443 close $fh;
1444 }
1445 return unless eval {
1446 command([qw/rev-parse --verify/,"$GIT_SVN-HEAD^0"],
1447 {STDERR => 0});
1448 };
1449 my $head = eval { command('rev-parse',"refs/remotes/$GIT_SVN") };
1450 if ($@ || !$head) {
1451 print STDERR "Please run: $0 rebuild --upgrade\n";
1452 exit 1;
1453 }
1454 }
1455
1456 # fills %tree_map with a reverse mapping of trees to commits. Useful
1457 # for finding parents to commit on.
1458 sub map_tree_joins {
1459 my %seen;
1460 foreach my $br (@_branch_from) {
1461 my $pipe = command_output_pipe(qw/rev-list
1462 --topo-order --pretty=raw/, $br);
1463 while (<$pipe>) {
1464 if (/^commit ($sha1)$/o) {
1465 my $commit = $1;
1466
1467 # if we've seen a commit,
1468 # we've seen its parents
1469 last if $seen{$commit};
1470 my ($tree) = (<$pipe> =~ /^tree ($sha1)$/o);
1471 unless (defined $tree) {
1472 die "Failed to parse commit $commit\n";
1473 }
1474 push @{$tree_map{$tree}}, $commit;
1475 $seen{$commit} = 1;
1476 }
1477 }
1478 eval { command_close_pipe($pipe) };
1479 }
1480 }
1481
1482 sub load_all_refs {
1483 if (@_branch_from) {
1484 print STDERR '--branch|-b parameters are ignored when ',
1485 "--branch-all-refs|-B is passed\n";
1486 }
1487
1488 # don't worry about rev-list on non-commit objects/tags,
1489 # it shouldn't blow up if a ref is a blob or tree...
1490 @_branch_from = command(qw/rev-parse --symbolic --all/);
1491 }
1492
1493 # '<svn username> = real-name <email address>' mapping based on git-svnimport:
1494 sub load_authors {
1495 open my $authors, '<', $_authors or die "Can't open $_authors $!\n";
1496 while (<$authors>) {
1497 chomp;
1498 next unless /^(\S+?|\(no author\))\s*=\s*(.+?)\s*<(.+)>\s*$/;
1499 my ($user, $name, $email) = ($1, $2, $3);
1500 $users{$user} = [$name, $email];
1501 }
1502 close $authors or croak $!;
1503 }
1504
1505 sub rload_authors {
1506 open my $authors, '<', $_authors or die "Can't open $_authors $!\n";
1507 while (<$authors>) {
1508 chomp;
1509 next unless /^(\S+?)\s*=\s*(.+?)\s*<(.+)>\s*$/;
1510 my ($user, $name, $email) = ($1, $2, $3);
1511 $rusers{"$name <$email>"} = $user;
1512 }
1513 close $authors or croak $!;
1514 }
1515
1516 sub git_svn_each {
1517 my $sub = shift;
1518 foreach (command(qw/rev-parse --symbolic --all/)) {
1519 next unless s#^refs/remotes/##;
1520 chomp $_;
1521 next unless -f "$GIT_DIR/svn/$_/info/url";
1522 &$sub($_);
1523 }
1524 }
1525
1526 sub migrate_revdb {
1527 git_svn_each(sub {
1528 my $id = shift;
1529 defined(my $pid = fork) or croak $!;
1530 if (!$pid) {
1531 $GIT_SVN = $ENV{GIT_SVN_ID} = $id;
1532 init_vars();
1533 exit 0 if -r $REVDB;
1534 print "Upgrading svn => git mapping...\n";
1535 -d $GIT_SVN_DIR or mkpath([$GIT_SVN_DIR]);
1536 open my $fh, '>>',$REVDB or croak $!;
1537 close $fh;
1538 rebuild();
1539 print "Done upgrading. You may now delete the ",
1540 "deprecated $GIT_SVN_DIR/revs directory\n";
1541 exit 0;
1542 }
1543 waitpid $pid, 0;
1544 croak $? if $?;
1545 });
1546 }
1547
1548 sub migration_check {
1549 migrate_revdb() unless (-e $REVDB);
1550 return if (-d "$GIT_DIR/svn" || !-d $GIT_DIR);
1551 print "Upgrading repository...\n";
1552 unless (-d "$GIT_DIR/svn") {
1553 mkdir "$GIT_DIR/svn" or croak $!;
1554 }
1555 print "Data from a previous version of git-svn exists, but\n\t",
1556 "$GIT_SVN_DIR\n\t(required for this version ",
1557 "($VERSION) of git-svn) does not.\n";
1558
1559 foreach my $x (command(qw/rev-parse --symbolic --all/)) {
1560 next unless $x =~ s#^refs/remotes/##;
1561 chomp $x;
1562 next unless -f "$GIT_DIR/$x/info/url";
1563 my $u = eval { file_to_s("$GIT_DIR/$x/info/url") };
1564 next unless $u;
1565 my $dn = dirname("$GIT_DIR/svn/$x");
1566 mkpath([$dn]) unless -d $dn;
1567 rename "$GIT_DIR/$x", "$GIT_DIR/svn/$x" or croak "$!: $x";
1568 }
1569 migrate_revdb() if (-d $GIT_SVN_DIR && !-w $REVDB);
1570 print "Done upgrading.\n";
1571 }
1572
1573 sub find_rev_before {
1574 my ($r, $id, $eq_ok) = @_;
1575 my $f = "$GIT_DIR/svn/$id/.rev_db";
1576 return (undef,undef) unless -r $f;
1577 --$r unless $eq_ok;
1578 while ($r > 0) {
1579 if (my $c = revdb_get($f, $r)) {
1580 return ($r, $c);
1581 }
1582 --$r;
1583 }
1584 return (undef, undef);
1585 }
1586
1587 sub init_vars {
1588 $GIT_SVN ||= $ENV{GIT_SVN_ID} || 'git-svn';
1589 $GIT_SVN_DIR = "$GIT_DIR/svn/$GIT_SVN";
1590 $REVDB = "$GIT_SVN_DIR/.rev_db";
1591 $GIT_SVN_INDEX = "$GIT_SVN_DIR/index";
1592 $SVN_URL = undef;
1593 $SVN_WC = "$GIT_SVN_DIR/tree";
1594 %tree_map = ();
1595 }
1596
1597 # convert GetOpt::Long specs for use by git-repo-config
1598 sub read_repo_config {
1599 return unless -d $GIT_DIR;
1600 my $opts = shift;
1601 foreach my $o (keys %$opts) {
1602 my $v = $opts->{$o};
1603 my ($key) = ($o =~ /^([a-z\-]+)/);
1604 $key =~ s/-//g;
1605 my $arg = 'git-repo-config';
1606 $arg .= ' --int' if ($o =~ /[:=]i$/);
1607 $arg .= ' --bool' if ($o !~ /[:=][sfi]$/);
1608 if (ref $v eq 'ARRAY') {
1609 chomp(my @tmp = `$arg --get-all svn.$key`);
1610 @$v = @tmp if @tmp;
1611 } else {
1612 chomp(my $tmp = `$arg --get svn.$key`);
1613 if ($tmp && !($arg =~ / --bool / && $tmp eq 'false')) {
1614 $$v = $tmp;
1615 }
1616 }
1617 }
1618 }
1619
1620 sub set_default_vals {
1621 if (defined $_repack) {
1622 $_repack = 1000 if ($_repack <= 0);
1623 $_repack_nr = $_repack;
1624 $_repack_flags ||= '-d';
1625 }
1626 }
1627
1628 sub read_grafts {
1629 my $gr_file = shift;
1630 my ($grafts, $comments) = ({}, {});
1631 if (open my $fh, '<', $gr_file) {
1632 my @tmp;
1633 while (<$fh>) {
1634 if (/^($sha1)\s+/) {
1635 my $c = $1;
1636 if (@tmp) {
1637 @{$comments->{$c}} = @tmp;
1638 @tmp = ();
1639 }
1640 foreach my $p (split /\s+/, $_) {
1641 $grafts->{$c}->{$p} = 1;
1642 }
1643 } else {
1644 push @tmp, $_;
1645 }
1646 }
1647 close $fh or croak $!;
1648 @{$comments->{'END'}} = @tmp if @tmp;
1649 }
1650 return ($grafts, $comments);
1651 }
1652
1653 sub write_grafts {
1654 my ($grafts, $comments, $gr_file) = @_;
1655
1656 open my $fh, '>', $gr_file or croak $!;
1657 foreach my $c (sort keys %$grafts) {
1658 if ($comments->{$c}) {
1659 print $fh $_ foreach @{$comments->{$c}};
1660 }
1661 my $p = $grafts->{$c};
1662 my %x; # real parents
1663 delete $p->{$c}; # commits are not self-reproducing...
1664 my $ch = command_output_pipe(qw/cat-file commit/, $c);
1665 while (<$ch>) {
1666 if (/^parent ($sha1)/) {
1667 $x{$1} = $p->{$1} = 1;
1668 } else {
1669 last unless /^\S/;
1670 }
1671 }
1672 eval { command_close_pipe($ch) }; # breaking the pipe
1673
1674 # if real parents are the only ones in the grafts, drop it
1675 next if join(' ',sort keys %$p) eq join(' ',sort keys %x);
1676
1677 my (@ip, @jp, $mb);
1678 my %del = %x;
1679 @ip = @jp = keys %$p;
1680 foreach my $i (@ip) {
1681 next if $del{$i} || $p->{$i} == 2;
1682 foreach my $j (@jp) {
1683 next if $i eq $j || $del{$j} || $p->{$j} == 2;
1684 $mb = eval { command('merge-base', $i, $j) };
1685 next unless $mb;
1686 chomp $mb;
1687 next if $x{$mb};
1688 if ($mb eq $j) {
1689 delete $p->{$i};
1690 $del{$i} = 1;
1691 } elsif ($mb eq $i) {
1692 delete $p->{$j};
1693 $del{$j} = 1;
1694 }
1695 }
1696 }
1697
1698 # if real parents are the only ones in the grafts, drop it
1699 next if join(' ',sort keys %$p) eq join(' ',sort keys %x);
1700
1701 print $fh $c, ' ', join(' ', sort keys %$p),"\n";
1702 }
1703 if ($comments->{'END'}) {
1704 print $fh $_ foreach @{$comments->{'END'}};
1705 }
1706 close $fh or croak $!;
1707 }
1708
1709 sub read_url_paths_all {
1710 my ($l_map, $pfx, $p) = @_;
1711 my @dir;
1712 foreach (<$p/*>) {
1713 if (-r "$_/info/url") {
1714 $pfx .= '/' if $pfx && $pfx !~ m!/$!;
1715 my $id = $pfx . basename $_;
1716 my $url = file_to_s("$_/info/url");
1717 my ($u, $p) = repo_path_split($url);
1718 $l_map->{$u}->{$p} = $id;
1719 } elsif (-d $_) {
1720 push @dir, $_;
1721 }
1722 }
1723 foreach (@dir) {
1724 my $x = $_;
1725 $x =~ s!^\Q$GIT_DIR\E/svn/!!o;
1726 read_url_paths_all($l_map, $x, $_);
1727 }
1728 }
1729
1730 # this one only gets ids that have been imported, not new ones
1731 sub read_url_paths {
1732 my $l_map = {};
1733 git_svn_each(sub { my $x = shift;
1734 my $url = file_to_s("$GIT_DIR/svn/$x/info/url");
1735 my ($u, $p) = repo_path_split($url);
1736 $l_map->{$u}->{$p} = $x;
1737 });
1738 return $l_map;
1739 }
1740
1741 sub extract_metadata {
1742 my $id = shift or return (undef, undef, undef);
1743 my ($url, $rev, $uuid) = ($id =~ /^git-svn-id:\s(\S+?)\@(\d+)
1744 \s([a-f\d\-]+)$/x);
1745 if (!defined $rev || !$uuid || !$url) {
1746 # some of the original repositories I made had
1747 # identifiers like this:
1748 ($rev, $uuid) = ($id =~/^git-svn-id:\s(\d+)\@([a-f\d\-]+)/);
1749 }
1750 return ($url, $rev, $uuid);
1751 }
1752
1753 sub cmt_metadata {
1754 return extract_metadata((grep(/^git-svn-id: /,
1755 command(qw/cat-file commit/, shift)))[-1]);
1756 }
1757
1758 sub get_commit_time {
1759 my $cmt = shift;
1760 my $fh = command_output_pipe(qw/rev-list --pretty=raw -n1/, $cmt);
1761 while (<$fh>) {
1762 /^committer\s(?:.+) (\d+) ([\-\+]?\d+)$/ or next;
1763 my ($s, $tz) = ($1, $2);
1764 if ($tz =~ s/^\+//) {
1765 $s += tz_to_s_offset($tz);
1766 } elsif ($tz =~ s/^\-//) {
1767 $s -= tz_to_s_offset($tz);
1768 }
1769 eval { command_close_pipe($fh) };
1770 return $s;
1771 }
1772 die "Can't get commit time for commit: $cmt\n";
1773 }
1774
1775 sub tz_to_s_offset {
1776 my ($tz) = @_;
1777 $tz =~ s/(\d\d)$//;
1778 return ($1 * 60) + ($tz * 3600);
1779 }
1780
1781 # adapted from pager.c
1782 sub config_pager {
1783 $_pager ||= $ENV{GIT_PAGER} || $ENV{PAGER};
1784 if (!defined $_pager) {
1785 $_pager = 'less';
1786 } elsif (length $_pager == 0 || $_pager eq 'cat') {
1787 $_pager = undef;
1788 }
1789 }
1790
1791 sub run_pager {
1792 return unless -t *STDOUT;
1793 pipe my $rfd, my $wfd or return;
1794 defined(my $pid = fork) or croak $!;
1795 if (!$pid) {
1796 open STDOUT, '>&', $wfd or croak $!;
1797 return;
1798 }
1799 open STDIN, '<&', $rfd or croak $!;
1800 $ENV{LESS} ||= 'FRSX';
1801 exec $_pager or croak "Can't run pager: $! ($_pager)\n";
1802 }
1803
1804 sub get_author_info {
1805 my ($dest, $author, $t, $tz) = @_;
1806 $author =~ s/(?:^\s*|\s*$)//g;
1807 $dest->{a_raw} = $author;
1808 my $_a;
1809 if ($_authors) {
1810 $_a = $rusers{$author} || undef;
1811 }
1812 if (!$_a) {
1813 ($_a) = ($author =~ /<([^>]+)\@[^>]+>$/);
1814 }
1815 $dest->{t} = $t;
1816 $dest->{tz} = $tz;
1817 $dest->{a} = $_a;
1818 # Date::Parse isn't in the standard Perl distro :(
1819 if ($tz =~ s/^\+//) {
1820 $t += tz_to_s_offset($tz);
1821 } elsif ($tz =~ s/^\-//) {
1822 $t -= tz_to_s_offset($tz);
1823 }
1824 $dest->{t_utc} = $t;
1825 }
1826
1827 sub process_commit {
1828 my ($c, $r_min, $r_max, $defer) = @_;
1829 if (defined $r_min && defined $r_max) {
1830 if ($r_min == $c->{r} && $r_min == $r_max) {
1831 show_commit($c);
1832 return 0;
1833 }
1834 return 1 if $r_min == $r_max;
1835 if ($r_min < $r_max) {
1836 # we need to reverse the print order
1837 return 0 if (defined $_limit && --$_limit < 0);
1838 push @$defer, $c;
1839 return 1;
1840 }
1841 if ($r_min != $r_max) {
1842 return 1 if ($r_min < $c->{r});
1843 return 1 if ($r_max > $c->{r});
1844 }
1845 }
1846 return 0 if (defined $_limit && --$_limit < 0);
1847 show_commit($c);
1848 return 1;
1849 }
1850
1851 sub show_commit {
1852 my $c = shift;
1853 if ($_oneline) {
1854 my $x = "\n";
1855 if (my $l = $c->{l}) {
1856 while ($l->[0] =~ /^\s*$/) { shift @$l }
1857 $x = $l->[0];
1858 }
1859 $_l_fmt ||= 'A' . length($c->{r});
1860 print 'r',pack($_l_fmt, $c->{r}),' | ';
1861 print "$c->{c} | " if $_show_commit;
1862 print $x;
1863 } else {
1864 show_commit_normal($c);
1865 }
1866 }
1867
1868 sub show_commit_changed_paths {
1869 my ($c) = @_;
1870 return unless $c->{changed};
1871 print "Changed paths:\n", @{$c->{changed}};
1872 }
1873
1874 sub show_commit_normal {
1875 my ($c) = @_;
1876 print '-' x72, "\nr$c->{r} | ";
1877 print "$c->{c} | " if $_show_commit;
1878 print "$c->{a} | ", strftime("%Y-%m-%d %H:%M:%S %z (%a, %d %b %Y)",
1879 localtime($c->{t_utc})), ' | ';
1880 my $nr_line = 0;
1881
1882 if (my $l = $c->{l}) {
1883 while ($l->[$#$l] eq "\n" && $#$l > 0
1884 && $l->[($#$l - 1)] eq "\n") {
1885 pop @$l;
1886 }
1887 $nr_line = scalar @$l;
1888 if (!$nr_line) {
1889 print "1 line\n\n\n";
1890 } else {
1891 if ($nr_line == 1) {
1892 $nr_line = '1 line';
1893 } else {
1894 $nr_line .= ' lines';
1895 }
1896 print $nr_line, "\n";
1897 show_commit_changed_paths($c);
1898 print "\n";
1899 print $_ foreach @$l;
1900 }
1901 } else {
1902 print "1 line\n";
1903 show_commit_changed_paths($c);
1904 print "\n";
1905
1906 }
1907 foreach my $x (qw/raw diff/) {
1908 if ($c->{$x}) {
1909 print "\n";
1910 print $_ foreach @{$c->{$x}}
1911 }
1912 }
1913 }
1914
1915 sub _simple_prompt {
1916 my ($cred, $realm, $default_username, $may_save, $pool) = @_;
1917 $may_save = undef if $_no_auth_cache;
1918 $default_username = $_username if defined $_username;
1919 if (defined $default_username && length $default_username) {
1920 if (defined $realm && length $realm) {
1921 print "Authentication realm: $realm\n";
1922 }
1923 $cred->username($default_username);
1924 } else {
1925 _username_prompt($cred, $realm, $may_save, $pool);
1926 }
1927 $cred->password(_read_password("Password for '" .
1928 $cred->username . "': ", $realm));
1929 $cred->may_save($may_save);
1930 $SVN::_Core::SVN_NO_ERROR;
1931 }
1932
1933 sub _ssl_server_trust_prompt {
1934 my ($cred, $realm, $failures, $cert_info, $may_save, $pool) = @_;
1935 $may_save = undef if $_no_auth_cache;
1936 print "Error validating server certificate for '$realm':\n";
1937 if ($failures & $SVN::Auth::SSL::UNKNOWNCA) {
1938 print " - The certificate is not issued by a trusted ",
1939 "authority. Use the\n",
1940 " fingerprint to validate the certificate manually!\n";
1941 }
1942 if ($failures & $SVN::Auth::SSL::CNMISMATCH) {
1943 print " - The certificate hostname does not match.\n";
1944 }
1945 if ($failures & $SVN::Auth::SSL::NOTYETVALID) {
1946 print " - The certificate is not yet valid.\n";
1947 }
1948 if ($failures & $SVN::Auth::SSL::EXPIRED) {
1949 print " - The certificate has expired.\n";
1950 }
1951 if ($failures & $SVN::Auth::SSL::OTHER) {
1952 print " - The certificate has an unknown error.\n";
1953 }
1954 printf( "Certificate information:\n".
1955 " - Hostname: %s\n".
1956 " - Valid: from %s until %s\n".
1957 " - Issuer: %s\n".
1958 " - Fingerprint: %s\n",
1959 map $cert_info->$_, qw(hostname valid_from valid_until
1960 issuer_dname fingerprint) );
1961 my $choice;
1962 prompt:
1963 print $may_save ?
1964 "(R)eject, accept (t)emporarily or accept (p)ermanently? " :
1965 "(R)eject or accept (t)emporarily? ";
1966 $choice = lc(substr(<STDIN> || 'R', 0, 1));
1967 if ($choice =~ /^t$/i) {
1968 $cred->may_save(undef);
1969 } elsif ($choice =~ /^r$/i) {
1970 return -1;
1971 } elsif ($may_save && $choice =~ /^p$/i) {
1972 $cred->may_save($may_save);
1973 } else {
1974 goto prompt;
1975 }
1976 $cred->accepted_failures($failures);
1977 $SVN::_Core::SVN_NO_ERROR;
1978 }
1979
1980 sub _ssl_client_cert_prompt {
1981 my ($cred, $realm, $may_save, $pool) = @_;
1982 $may_save = undef if $_no_auth_cache;
1983 print "Client certificate filename: ";
1984 chomp(my $filename = <STDIN>);
1985 $cred->cert_file($filename);
1986 $cred->may_save($may_save);
1987 $SVN::_Core::SVN_NO_ERROR;
1988 }
1989
1990 sub _ssl_client_cert_pw_prompt {
1991 my ($cred, $realm, $may_save, $pool) = @_;
1992 $may_save = undef if $_no_auth_cache;
1993 $cred->password(_read_password("Password: ", $realm));
1994 $cred->may_save($may_save);
1995 $SVN::_Core::SVN_NO_ERROR;
1996 }
1997
1998 sub _username_prompt {
1999 my ($cred, $realm, $may_save, $pool) = @_;
2000 $may_save = undef if $_no_auth_cache;
2001 if (defined $realm && length $realm) {
2002 print "Authentication realm: $realm\n";
2003 }
2004 my $username;
2005 if (defined $_username) {
2006 $username = $_username;
2007 } else {
2008 print "Username: ";
2009 chomp($username = <STDIN>);
2010 }
2011 $cred->username($username);
2012 $cred->may_save($may_save);
2013 $SVN::_Core::SVN_NO_ERROR;
2014 }
2015
2016 sub _read_password {
2017 my ($prompt, $realm) = @_;
2018 print $prompt;
2019 require Term::ReadKey;
2020 Term::ReadKey::ReadMode('noecho');
2021 my $password = '';
2022 while (defined(my $key = Term::ReadKey::ReadKey(0))) {
2023 last if $key =~ /[\012\015]/; # \n\r
2024 $password .= $key;
2025 }
2026 Term::ReadKey::ReadMode('restore');
2027 print "\n";
2028 $password;
2029 }
2030
2031 sub libsvn_connect {
2032 my ($url) = @_;
2033 SVN::_Core::svn_config_ensure($_config_dir, undef);
2034 my ($baton, $callbacks) = SVN::Core::auth_open_helper([
2035 SVN::Client::get_simple_provider(),
2036 SVN::Client::get_ssl_server_trust_file_provider(),
2037 SVN::Client::get_simple_prompt_provider(
2038 \&_simple_prompt, 2),
2039 SVN::Client::get_ssl_client_cert_prompt_provider(
2040 \&_ssl_client_cert_prompt, 2),
2041 SVN::Client::get_ssl_client_cert_pw_prompt_provider(
2042 \&_ssl_client_cert_pw_prompt, 2),
2043 SVN::Client::get_username_provider(),
2044 SVN::Client::get_ssl_server_trust_prompt_provider(
2045 \&_ssl_server_trust_prompt),
2046 SVN::Client::get_username_prompt_provider(
2047 \&_username_prompt, 2),
2048 ]);
2049 my $config = SVN::Core::config_get_config($_config_dir);
2050 my $ra = SVN::Ra->new(url => $url, auth => $baton,
2051 config => $config,
2052 pool => SVN::Pool->new,
2053 auth_provider_callbacks => $callbacks);
2054 $ra->{svn_path} = $url;
2055 $ra->{repos_root} = $ra->get_repos_root;
2056 $ra->{svn_path} =~ s#^\Q$ra->{repos_root}\E/*##;
2057 push @repo_path_split_cache, qr/^(\Q$ra->{repos_root}\E)/;
2058 return $ra;
2059 }
2060
2061 sub libsvn_can_do_switch {
2062 unless (defined $_svn_can_do_switch) {
2063 my $pool = SVN::Pool->new;
2064 my $rep = eval {
2065 $SVN->do_switch(1, '', 0, $SVN->{url},
2066 SVN::Delta::Editor->new, $pool);
2067 };
2068 if ($@) {
2069 $_svn_can_do_switch = 0;
2070 } else {
2071 $rep->abort_report($pool);
2072 $_svn_can_do_switch = 1;
2073 }
2074 $pool->clear;
2075 }
2076 $_svn_can_do_switch;
2077 }
2078
2079 sub libsvn_dup_ra {
2080 my ($ra) = @_;
2081 SVN::Ra->new(map { $_ => $ra->{$_} } qw/config url
2082 auth auth_provider_callbacks repos_root svn_path/);
2083 }
2084
2085 sub uri_encode {
2086 my ($f) = @_;
2087 $f =~ s#([^a-zA-Z0-9\*!\:_\./\-])#uc sprintf("%%%02x",ord($1))#eg;
2088 $f
2089 }
2090
2091 sub uri_decode {
2092 my ($f) = @_;
2093 $f =~ tr/+/ /;
2094 $f =~ s/%([A-F0-9]{2})/chr hex($1)/ge;
2095 $f
2096 }
2097
2098 sub libsvn_log_entry {
2099 my ($rev, $author, $date, $msg, $parents, $untracked) = @_;
2100 my ($Y,$m,$d,$H,$M,$S) = ($date =~ /^(\d{4})\-(\d\d)\-(\d\d)T
2101 (\d\d)\:(\d\d)\:(\d\d).\d+Z$/x)
2102 or die "Unable to parse date: $date\n";
2103 if (defined $author && length $author > 0 &&
2104 defined $_authors && ! defined $users{$author}) {
2105 die "Author: $author not defined in $_authors file\n";
2106 }
2107 $msg = '' if ($rev == 0 && !defined $msg);
2108
2109 open my $un, '>>', "$GIT_SVN_DIR/unhandled.log" or croak $!;
2110 my $h;
2111 print $un "r$rev\n" or croak $!;
2112 $h = $untracked->{empty};
2113 foreach (sort keys %$h) {
2114 my $act = $h->{$_} ? '+empty_dir' : '-empty_dir';
2115 print $un " $act: ", uri_encode($_), "\n" or croak $!;
2116 warn "W: $act: $_\n";
2117 }
2118 foreach my $t (qw/dir_prop file_prop/) {
2119 $h = $untracked->{$t} or next;
2120 foreach my $path (sort keys %$h) {
2121 my $ppath = $path eq '' ? '.' : $path;
2122 foreach my $prop (sort keys %{$h->{$path}}) {
2123 next if $SKIP{$prop};
2124 my $v = $h->{$path}->{$prop};
2125 if (defined $v) {
2126 print $un " +$t: ",
2127 uri_encode($ppath), ' ',
2128 uri_encode($prop), ' ',
2129 uri_encode($v), "\n"
2130 or croak $!;
2131 } else {
2132 print $un " -$t: ",
2133 uri_encode($ppath), ' ',
2134 uri_encode($prop), "\n"
2135 or croak $!;
2136 }
2137 }
2138 }
2139 }
2140 foreach my $t (qw/absent_file absent_directory/) {
2141 $h = $untracked->{$t} or next;
2142 foreach my $parent (sort keys %$h) {
2143 foreach my $path (sort @{$h->{$parent}}) {
2144 print $un " $t: ",
2145 uri_encode("$parent/$path"), "\n"
2146 or croak $!;
2147 warn "W: $t: $parent/$path ",
2148 "Insufficient permissions?\n";
2149 }
2150 }
2151 }
2152
2153 # revprops (make this optional? it's an extra network trip...)
2154 my $pool = SVN::Pool->new;
2155 my $rp = $SVN->rev_proplist($rev, $pool);
2156 foreach (sort keys %$rp) {
2157 next if /^svn:(?:author|date|log)$/;
2158 print $un " rev_prop: ", uri_encode($_), ' ',
2159 uri_encode($rp->{$_}), "\n";
2160 }
2161 $pool->clear;
2162 close $un or croak $!;
2163
2164 { revision => $rev, date => "+0000 $Y-$m-$d $H:$M:$S",
2165 author => $author, msg => $msg."\n", parents => $parents || [],
2166 revprops => $rp }
2167 }
2168
2169 sub process_rm {
2170 my ($gui, $last_commit, $f, $q) = @_;
2171 # remove entire directories.
2172 if (command('ls-tree',$last_commit,'--',$f) =~ /^040000 tree/) {
2173 my ($ls, $ctx) = command_output_pipe(qw/ls-tree
2174 -r --name-only -z/,
2175 $last_commit,'--',$f);
2176 local $/ = "\0";
2177 while (<$ls>) {
2178 print $gui '0 ',0 x 40,"\t",$_ or croak $!;
2179 print "\tD\t$_\n" unless $q;
2180 }
2181 print "\tD\t$f/\n" unless $q;
2182 command_close_pipe($ls, $ctx);
2183 return $SVN::Node::dir;
2184 } else {
2185 print $gui '0 ',0 x 40,"\t",$f,"\0" or croak $!;
2186 print "\tD\t$f\n" unless $q;
2187 return $SVN::Node::file;
2188 }
2189 }
2190
2191 sub libsvn_fetch {
2192 my ($last_commit, $paths, $rev, $author, $date, $msg) = @_;
2193 my $pool = SVN::Pool->new;
2194 my $ed = SVN::Git::Fetcher->new({ c => $last_commit, q => $_q });
2195 my $reporter = $SVN->do_update($rev, '', 1, $ed, $pool);
2196 my @lock = $SVN::Core::VERSION ge '1.2.0' ? (undef) : ();
2197 my (undef, $last_rev, undef) = cmt_metadata($last_commit);
2198 $reporter->set_path('', $last_rev, 0, @lock, $pool);
2199 $reporter->finish_report($pool);
2200 $pool->clear;
2201 unless ($ed->{git_commit_ok}) {
2202 die "SVN connection failed somewhere...\n";
2203 }
2204 libsvn_log_entry($rev, $author, $date, $msg, [$last_commit], $ed);
2205 }
2206
2207 sub svn_grab_base_rev {
2208 my $c = eval { command_oneline([qw/rev-parse --verify/,
2209 "refs/remotes/$GIT_SVN^0"],
2210 { STDERR => 0 }) };
2211 if (defined $c && length $c) {
2212 my ($url, $rev, $uuid) = cmt_metadata($c);
2213 return ($rev, $c) if defined $rev;
2214 }
2215 if ($_no_metadata) {
2216 my $offset = -41; # from tail
2217 my $rl;
2218 open my $fh, '<', $REVDB or
2219 die "--no-metadata specified and $REVDB not readable\n";
2220 seek $fh, $offset, 2;
2221 $rl = readline $fh;
2222 defined $rl or return (undef, undef);
2223 chomp $rl;
2224 while ($c ne $rl && tell $fh != 0) {
2225 $offset -= 41;
2226 seek $fh, $offset, 2;
2227 $rl = readline $fh;
2228 defined $rl or return (undef, undef);
2229 chomp $rl;
2230 }
2231 my $rev = tell $fh;
2232 croak $! if ($rev < -1);
2233 $rev = ($rev - 41) / 41;
2234 close $fh or croak $!;
2235 return ($rev, $c);
2236 }
2237 return (undef, undef);
2238 }
2239
2240 sub libsvn_parse_revision {
2241 my $base = shift;
2242 my $head = $SVN->get_latest_revnum();
2243 if (!defined $_revision || $_revision eq 'BASE:HEAD') {
2244 return ($base + 1, $head) if (defined $base);
2245 return (0, $head);
2246 }
2247 return ($1, $2) if ($_revision =~ /^(\d+):(\d+)$/);
2248 return ($_revision, $_revision) if ($_revision =~ /^\d+$/);
2249 if ($_revision =~ /^BASE:(\d+)$/) {
2250 return ($base + 1, $1) if (defined $base);
2251 return (0, $head);
2252 }
2253 return ($1, $head) if ($_revision =~ /^(\d+):HEAD$/);
2254 die "revision argument: $_revision not understood by git-svn\n",
2255 "Try using the command-line svn client instead\n";
2256 }
2257
2258 sub libsvn_traverse_ignore {
2259 my ($fh, $path, $r) = @_;
2260 $path =~ s#^/+##g;
2261 my $pool = SVN::Pool->new;
2262 my ($dirent, undef, $props) = $SVN->get_dir($path, $r, $pool);
2263 my $p = $path;
2264 $p =~ s#^\Q$SVN->{svn_path}\E/##;
2265 print $fh length $p ? "\n# $p\n" : "\n# /\n";
2266 if (my $s = $props->{'svn:ignore'}) {
2267 $s =~ s/[\r\n]+/\n/g;
2268 chomp $s;
2269 if (length $p == 0) {
2270 $s =~ s#\n#\n/$p#g;
2271 print $fh "/$s\n";
2272 } else {
2273 $s =~ s#\n#\n/$p/#g;
2274 print $fh "/$p/$s\n";
2275 }
2276 }
2277 foreach (sort keys %$dirent) {
2278 next if $dirent->{$_}->kind != $SVN::Node::dir;
2279 libsvn_traverse_ignore($fh, "$path/$_", $r);
2280 }
2281 $pool->clear;
2282 }
2283
2284 sub revisions_eq {
2285 my ($path, $r0, $r1) = @_;
2286 return 1 if $r0 == $r1;
2287 my $nr = 0;
2288 # should be OK to use Pool here (r1 - r0) should be small
2289 my $pool = SVN::Pool->new;
2290 libsvn_get_log($SVN, [$path], $r0, $r1,
2291 0, 0, 1, sub {$nr++}, $pool);
2292 $pool->clear;
2293 return 0 if ($nr > 1);
2294 return 1;
2295 }
2296
2297 sub libsvn_find_parent_branch {
2298 my ($paths, $rev, $author, $date, $msg) = @_;
2299 my $svn_path = '/'.$SVN->{svn_path};
2300
2301 # look for a parent from another branch:
2302 my $i = $paths->{$svn_path} or return;
2303 my $branch_from = $i->copyfrom_path or return;
2304 my $r = $i->copyfrom_rev;
2305 print STDERR "Found possible branch point: ",
2306 "$branch_from => $svn_path, $r\n";
2307 $branch_from =~ s#^/##;
2308 my $l_map = {};
2309 read_url_paths_all($l_map, '', "$GIT_DIR/svn");
2310 my $url = $SVN->{repos_root};
2311 defined $l_map->{$url} or return;
2312 my $id = $l_map->{$url}->{$branch_from};
2313 if (!defined $id && $_follow_parent) {
2314 print STDERR "Following parent: $branch_from\@$r\n";
2315 # auto create a new branch and follow it
2316 $id = basename($branch_from);
2317 $id .= '@'.$r if -r "$GIT_DIR/svn/$id";
2318 while (-r "$GIT_DIR/svn/$id") {
2319 # just grow a tail if we're not unique enough :x
2320 $id .= '-';
2321 }
2322 }
2323 return unless defined $id;
2324
2325 my ($r0, $parent) = find_rev_before($r,$id,1);
2326 if ($_follow_parent && (!defined $r0 || !defined $parent)) {
2327 defined(my $pid = fork) or croak $!;
2328 if (!$pid) {
2329 $GIT_SVN = $ENV{GIT_SVN_ID} = $id;
2330 init_vars();
2331 $SVN_URL = "$url/$branch_from";
2332 $SVN = undef;
2333 setup_git_svn();
2334 # we can't assume SVN_URL exists at r+1:
2335 $_revision = "0:$r";
2336 fetch_lib();
2337 exit 0;
2338 }
2339 waitpid $pid, 0;
2340 croak $? if $?;
2341 ($r0, $parent) = find_rev_before($r,$id,1);
2342 }
2343 return unless (defined $r0 && defined $parent);
2344 if (revisions_eq($branch_from, $r0, $r)) {
2345 unlink $GIT_SVN_INDEX;
2346 print STDERR "Found branch parent: ($GIT_SVN) $parent\n";
2347 command_noisy('read-tree', $parent);
2348 unless (libsvn_can_do_switch()) {
2349 return _libsvn_new_tree($paths, $rev, $author, $date,
2350 $msg, [$parent]);
2351 }
2352 # do_switch works with svn/trunk >= r22312, but that is not
2353 # included with SVN 1.4.2 (the latest version at the moment),
2354 # so we can't rely on it.
2355 my $ra = libsvn_connect("$url/$branch_from");
2356 my $ed = SVN::Git::Fetcher->new({c => $parent, q => $_q });
2357 my $pool = SVN::Pool->new;
2358 my $reporter = $ra->do_switch($rev, '', 1, $SVN->{url},
2359 $ed, $pool);
2360 my @lock = $SVN::Core::VERSION ge '1.2.0' ? (undef) : ();
2361 $reporter->set_path('', $r0, 0, @lock, $pool);
2362 $reporter->finish_report($pool);
2363 $pool->clear;
2364 unless ($ed->{git_commit_ok}) {
2365 die "SVN connection failed somewhere...\n";
2366 }
2367 return libsvn_log_entry($rev, $author, $date, $msg, [$parent]);
2368 }
2369 print STDERR "Nope, branch point not imported or unknown\n";
2370 return undef;
2371 }
2372
2373 sub libsvn_get_log {
2374 my ($ra, @args) = @_;
2375 $args[4]-- if $args[4] && ! $_follow_parent;
2376 if ($SVN::Core::VERSION le '1.2.0') {
2377 splice(@args, 3, 1);
2378 }
2379 $ra->get_log(@args);
2380 }
2381
2382 sub libsvn_new_tree {
2383 if (my $log_entry = libsvn_find_parent_branch(@_)) {
2384 return $log_entry;
2385 }
2386 my ($paths, $rev, $author, $date, $msg) = @_; # $pool is last
2387 _libsvn_new_tree($paths, $rev, $author, $date, $msg, []);
2388 }
2389
2390 sub _libsvn_new_tree {
2391 my ($paths, $rev, $author, $date, $msg, $parents) = @_;
2392 my $pool = SVN::Pool->new;
2393 my $ed = SVN::Git::Fetcher->new({q => $_q});
2394 my $reporter = $SVN->do_update($rev, '', 1, $ed, $pool);
2395 my @lock = $SVN::Core::VERSION ge '1.2.0' ? (undef) : ();
2396 $reporter->set_path('', $rev, 1, @lock, $pool);
2397 $reporter->finish_report($pool);
2398 $pool->clear;
2399 unless ($ed->{git_commit_ok}) {
2400 die "SVN connection failed somewhere...\n";
2401 }
2402 libsvn_log_entry($rev, $author, $date, $msg, $parents, $ed);
2403 }
2404
2405 sub find_graft_path_commit {
2406 my ($tree_paths, $p1, $r1) = @_;
2407 foreach my $x (keys %$tree_paths) {
2408 next unless ($p1 =~ /^\Q$x\E/);
2409 my $i = $tree_paths->{$x};
2410 my ($r0, $parent) = find_rev_before($r1,$i,1);
2411 return $parent if (defined $r0 && $r0 == $r1);
2412 print STDERR "r$r1 of $i not imported\n";
2413 next;
2414 }
2415 return undef;
2416 }
2417
2418 sub find_graft_path_parents {
2419 my ($grafts, $tree_paths, $c, $p0, $r0) = @_;
2420 foreach my $x (keys %$tree_paths) {
2421 next unless ($p0 =~ /^\Q$x\E/);
2422 my $i = $tree_paths->{$x};
2423 my ($r, $parent) = find_rev_before($r0, $i, 1);
2424 if (defined $r && defined $parent && revisions_eq($x,$r,$r0)) {
2425 my ($url_b, undef, $uuid_b) = cmt_metadata($c);
2426 my ($url_a, undef, $uuid_a) = cmt_metadata($parent);
2427 next if ($url_a && $url_b && $url_a eq $url_b &&
2428 $uuid_b eq $uuid_a);
2429 $grafts->{$c}->{$parent} = 1;
2430 }
2431 }
2432 }
2433
2434 sub libsvn_graft_file_copies {
2435 my ($grafts, $tree_paths, $path, $paths, $rev) = @_;
2436 foreach (keys %$paths) {
2437 my $i = $paths->{$_};
2438 my ($m, $p0, $r0) = ($i->action, $i->copyfrom_path,
2439 $i->copyfrom_rev);
2440 next unless (defined $p0 && defined $r0);
2441
2442 my $p1 = $_;
2443 $p1 =~ s#^/##;
2444 $p0 =~ s#^/##;
2445 my $c = find_graft_path_commit($tree_paths, $p1, $rev);
2446 next unless $c;
2447 find_graft_path_parents($grafts, $tree_paths, $c, $p0, $r0);
2448 }
2449 }
2450
2451 sub set_index {
2452 my $old = $ENV{GIT_INDEX_FILE};
2453 $ENV{GIT_INDEX_FILE} = shift;
2454 return $old;
2455 }
2456
2457 sub restore_index {
2458 my ($old) = @_;
2459 if (defined $old) {
2460 $ENV{GIT_INDEX_FILE} = $old;
2461 } else {
2462 delete $ENV{GIT_INDEX_FILE};
2463 }
2464 }
2465
2466 sub libsvn_commit_cb {
2467 my ($rev, $date, $committer, $c, $msg, $r_last, $cmt_last) = @_;
2468 if ($_optimize_commits && $rev == ($r_last + 1)) {
2469 my $log = libsvn_log_entry($rev,$committer,$date,$msg);
2470 $log->{tree} = get_tree_from_treeish($c);
2471 my $cmt = git_commit($log, $cmt_last, $c);
2472 my @diff = command('diff-tree', $cmt, $c);
2473 if (@diff) {
2474 print STDERR "Trees differ: $cmt $c\n",
2475 join('',@diff),"\n";
2476 exit 1;
2477 }
2478 } else {
2479 fetch("$rev=$c");
2480 }
2481 }
2482
2483 sub libsvn_ls_fullurl {
2484 my $fullurl = shift;
2485 my $ra = libsvn_connect($fullurl);
2486 my @ret;
2487 my $pool = SVN::Pool->new;
2488 my $r = defined $_revision ? $_revision : $ra->get_latest_revnum;
2489 my ($dirent, undef, undef) = $ra->get_dir('', $r, $pool);
2490 foreach my $d (sort keys %$dirent) {
2491 if ($dirent->{$d}->kind == $SVN::Node::dir) {
2492 push @ret, "$d/"; # add '/' for compat with cli svn
2493 }
2494 }
2495 $pool->clear;
2496 return @ret;
2497 }
2498
2499
2500 sub libsvn_skip_unknown_revs {
2501 my $err = shift;
2502 my $errno = $err->apr_err();
2503 # Maybe the branch we're tracking didn't
2504 # exist when the repo started, so it's
2505 # not an error if it doesn't, just continue
2506 #
2507 # Wonderfully consistent library, eh?
2508 # 160013 - svn:// and file://
2509 # 175002 - http(s)://
2510 # 175007 - http(s):// (this repo required authorization, too...)
2511 # More codes may be discovered later...
2512 if ($errno == 175007 || $errno == 175002 || $errno == 160013) {
2513 return;
2514 }
2515 croak "Error from SVN, ($errno): ", $err->expanded_message,"\n";
2516 };
2517
2518 # Tie::File seems to be prone to offset errors if revisions get sparse,
2519 # it's not that fast, either. Tie::File is also not in Perl 5.6. So
2520 # one of my favorite modules is out :< Next up would be one of the DBM
2521 # modules, but I'm not sure which is most portable... So I'll just
2522 # go with something that's plain-text, but still capable of
2523 # being randomly accessed. So here's my ultra-simple fixed-width
2524 # database. All records are 40 characters + "\n", so it's easy to seek
2525 # to a revision: (41 * rev) is the byte offset.
2526 # A record of 40 0s denotes an empty revision.
2527 # And yes, it's still pretty fast (faster than Tie::File).
2528 sub revdb_set {
2529 my ($file, $rev, $commit) = @_;
2530 length $commit == 40 or croak "arg3 must be a full SHA1 hexsum\n";
2531 open my $fh, '+<', $file or croak $!;
2532 my $offset = $rev * 41;
2533 # assume that append is the common case:
2534 seek $fh, 0, 2 or croak $!;
2535 my $pos = tell $fh;
2536 if ($pos < $offset) {
2537 print $fh (('0' x 40),"\n") x (($offset - $pos) / 41);
2538 }
2539 seek $fh, $offset, 0 or croak $!;
2540 print $fh $commit,"\n";
2541 close $fh or croak $!;
2542 }
2543
2544 sub revdb_get {
2545 my ($file, $rev) = @_;
2546 my $ret;
2547 my $offset = $rev * 41;
2548 open my $fh, '<', $file or croak $!;
2549 seek $fh, $offset, 0;
2550 if (tell $fh == $offset) {
2551 $ret = readline $fh;
2552 if (defined $ret) {
2553 chomp $ret;
2554 $ret = undef if ($ret =~ /^0{40}$/);
2555 }
2556 }
2557 close $fh or croak $!;
2558 return $ret;
2559 }
2560
2561 sub copy_remote_ref {
2562 my $origin = $_cp_remote ? $_cp_remote : 'origin';
2563 my $ref = "refs/remotes/$GIT_SVN";
2564 if (command('ls-remote', $origin, $ref)) {
2565 command_noisy('fetch', $origin, "$ref:$ref");
2566 } elsif ($_cp_remote && !$_upgrade) {
2567 die "Unable to find remote reference: ",
2568 "refs/remotes/$GIT_SVN on $origin\n";
2569 }
2570 }
2571
2572 {
2573 my $kill_stupid_warnings = $SVN::Node::none.$SVN::Node::file.
2574 $SVN::Node::dir.$SVN::Node::unknown.
2575 $SVN::Node::none.$SVN::Node::file.
2576 $SVN::Node::dir.$SVN::Node::unknown.
2577 $SVN::Auth::SSL::CNMISMATCH.
2578 $SVN::Auth::SSL::NOTYETVALID.
2579 $SVN::Auth::SSL::EXPIRED.
2580 $SVN::Auth::SSL::UNKNOWNCA.
2581 $SVN::Auth::SSL::OTHER;
2582 }
2583
2584 package SVN::Git::Fetcher;
2585 use vars qw/@ISA/;
2586 use strict;
2587 use warnings;
2588 use Carp qw/croak/;
2589 use IO::File qw//;
2590 use Git qw/command command_oneline command_noisy
2591 command_output_pipe command_input_pipe command_close_pipe/;
2592
2593 # file baton members: path, mode_a, mode_b, pool, fh, blob, base
2594 sub new {
2595 my ($class, $git_svn) = @_;
2596 my $self = SVN::Delta::Editor->new;
2597 bless $self, $class;
2598 $self->{c} = $git_svn->{c} if exists $git_svn->{c};
2599 $self->{q} = $git_svn->{q};
2600 $self->{empty} = {};
2601 $self->{dir_prop} = {};
2602 $self->{file_prop} = {};
2603 $self->{absent_dir} = {};
2604 $self->{absent_file} = {};
2605 ($self->{gui}, $self->{ctx}) = command_input_pipe(
2606 qw/update-index -z --index-info/);
2607 require Digest::MD5;
2608 $self;
2609 }
2610
2611 sub open_root {
2612 { path => '' };
2613 }
2614
2615 sub open_directory {
2616 my ($self, $path, $pb, $rev) = @_;
2617 { path => $path };
2618 }
2619
2620 sub delete_entry {
2621 my ($self, $path, $rev, $pb) = @_;
2622 my $t = process_rm($self->{gui}, $self->{c}, $path, $self->{q});
2623 $self->{empty}->{$path} = 0 if $t == $SVN::Node::dir;
2624 undef;
2625 }
2626
2627 sub open_file {
2628 my ($self, $path, $pb, $rev) = @_;
2629 my ($mode, $blob) = (command('ls-tree', $self->{c}, '--',$path)
2630 =~ /^(\d{6}) blob ([a-f\d]{40})\t/);
2631 unless (defined $mode && defined $blob) {
2632 die "$path was not found in commit $self->{c} (r$rev)\n";
2633 }
2634 { path => $path, mode_a => $mode, mode_b => $mode, blob => $blob,
2635 pool => SVN::Pool->new, action => 'M' };
2636 }
2637
2638 sub add_file {
2639 my ($self, $path, $pb, $cp_path, $cp_rev) = @_;
2640 my ($dir, $file) = ($path =~ m#^(.*?)/?([^/]+)$#);
2641 delete $self->{empty}->{$dir};
2642 { path => $path, mode_a => 100644, mode_b => 100644,
2643 pool => SVN::Pool->new, action => 'A' };
2644 }
2645
2646 sub add_directory {
2647 my ($self, $path, $cp_path, $cp_rev) = @_;
2648 my ($dir, $file) = ($path =~ m#^(.*?)/?([^/]+)$#);
2649 delete $self->{empty}->{$dir};
2650 $self->{empty}->{$path} = 1;
2651 { path => $path };
2652 }
2653
2654 sub change_dir_prop {
2655 my ($self, $db, $prop, $value) = @_;
2656 $self->{dir_prop}->{$db->{path}} ||= {};
2657 $self->{dir_prop}->{$db->{path}}->{$prop} = $value;
2658 undef;
2659 }
2660
2661 sub absent_directory {
2662 my ($self, $path, $pb) = @_;
2663 $self->{absent_dir}->{$pb->{path}} ||= [];
2664 push @{$self->{absent_dir}->{$pb->{path}}}, $path;
2665 undef;
2666 }
2667
2668 sub absent_file {
2669 my ($self, $path, $pb) = @_;
2670 $self->{absent_file}->{$pb->{path}} ||= [];
2671 push @{$self->{absent_file}->{$pb->{path}}}, $path;
2672 undef;
2673 }
2674
2675 sub change_file_prop {
2676 my ($self, $fb, $prop, $value) = @_;
2677 if ($prop eq 'svn:executable') {
2678 if ($fb->{mode_b} != 120000) {
2679 $fb->{mode_b} = defined $value ? 100755 : 100644;
2680 }
2681 } elsif ($prop eq 'svn:special') {
2682 $fb->{mode_b} = defined $value ? 120000 : 100644;
2683 } else {
2684 $self->{file_prop}->{$fb->{path}} ||= {};
2685 $self->{file_prop}->{$fb->{path}}->{$prop} = $value;
2686 }
2687 undef;
2688 }
2689
2690 sub apply_textdelta {
2691 my ($self, $fb, $exp) = @_;
2692 my $fh = IO::File->new_tmpfile;
2693 $fh->autoflush(1);
2694 # $fh gets auto-closed() by SVN::TxDelta::apply(),
2695 # (but $base does not,) so dup() it for reading in close_file
2696 open my $dup, '<&', $fh or croak $!;
2697 my $base = IO::File->new_tmpfile;
2698 $base->autoflush(1);
2699 if ($fb->{blob}) {
2700 defined (my $pid = fork) or croak $!;
2701 if (!$pid) {
2702 open STDOUT, '>&', $base or croak $!;
2703 print STDOUT 'link ' if ($fb->{mode_a} == 120000);
2704 exec qw/git-cat-file blob/, $fb->{blob} or croak $!;
2705 }
2706 waitpid $pid, 0;
2707 croak $? if $?;
2708
2709 if (defined $exp) {
2710 seek $base, 0, 0 or croak $!;
2711 my $md5 = Digest::MD5->new;
2712 $md5->addfile($base);
2713 my $got = $md5->hexdigest;
2714 die "Checksum mismatch: $fb->{path} $fb->{blob}\n",
2715 "expected: $exp\n",
2716 " got: $got\n" if ($got ne $exp);
2717 }
2718 }
2719 seek $base, 0, 0 or croak $!;
2720 $fb->{fh} = $dup;
2721 $fb->{base} = $base;
2722 [ SVN::TxDelta::apply($base, $fh, undef, $fb->{path}, $fb->{pool}) ];
2723 }
2724
2725 sub close_file {
2726 my ($self, $fb, $exp) = @_;
2727 my $hash;
2728 my $path = $fb->{path};
2729 if (my $fh = $fb->{fh}) {
2730 seek($fh, 0, 0) or croak $!;
2731 my $md5 = Digest::MD5->new;
2732 $md5->addfile($fh);
2733 my $got = $md5->hexdigest;
2734 die "Checksum mismatch: $path\n",
2735 "expected: $exp\n got: $got\n" if ($got ne $exp);
2736 seek($fh, 0, 0) or croak $!;
2737 if ($fb->{mode_b} == 120000) {
2738 read($fh, my $buf, 5) == 5 or croak $!;
2739 $buf eq 'link ' or die "$path has mode 120000",
2740 "but is not a link\n";
2741 }
2742 defined(my $pid = open my $out,'-|') or die "Can't fork: $!\n";
2743 if (!$pid) {
2744 open STDIN, '<&', $fh or croak $!;
2745 exec qw/git-hash-object -w --stdin/ or croak $!;
2746 }
2747 chomp($hash = do { local $/; <$out> });
2748 close $out or croak $!;
2749 close $fh or croak $!;
2750 $hash =~ /^[a-f\d]{40}$/ or die "not a sha1: $hash\n";
2751 close $fb->{base} or croak $!;
2752 } else {
2753 $hash = $fb->{blob} or die "no blob information\n";
2754 }
2755 $fb->{pool}->clear;
2756 my $gui = $self->{gui};
2757 print $gui "$fb->{mode_b} $hash\t$path\0" or croak $!;
2758 print "\t$fb->{action}\t$path\n" if $fb->{action} && ! $self->{q};
2759 undef;
2760 }
2761
2762 sub abort_edit {
2763 my $self = shift;
2764 eval { command_close_pipe($self->{gui}, $self->{ctx}) };
2765 $self->SUPER::abort_edit(@_);
2766 }
2767
2768 sub close_edit {
2769 my $self = shift;
2770 command_close_pipe($self->{gui}, $self->{ctx});
2771 $self->{git_commit_ok} = 1;
2772 $self->SUPER::close_edit(@_);
2773 }
2774
2775 package SVN::Git::Editor;
2776 use vars qw/@ISA/;
2777 use strict;
2778 use warnings;
2779 use Carp qw/croak/;
2780 use IO::File;
2781 use Git qw/command command_oneline command_noisy
2782 command_output_pipe command_input_pipe command_close_pipe/;
2783
2784 sub new {
2785 my $class = shift;
2786 my $git_svn = shift;
2787 my $self = SVN::Delta::Editor->new(@_);
2788 bless $self, $class;
2789 foreach (qw/svn_path c r ra /) {
2790 die "$_ required!\n" unless (defined $git_svn->{$_});
2791 $self->{$_} = $git_svn->{$_};
2792 }
2793 $self->{pool} = SVN::Pool->new;
2794 $self->{bat} = { '' => $self->open_root($self->{r}, $self->{pool}) };
2795 $self->{rm} = { };
2796 require Digest::MD5;
2797 return $self;
2798 }
2799
2800 sub split_path {
2801 return ($_[0] =~ m#^(.*?)/?([^/]+)$#);
2802 }
2803
2804 sub repo_path {
2805 (defined $_[1] && length $_[1]) ? $_[1] : ''
2806 }
2807
2808 sub url_path {
2809 my ($self, $path) = @_;
2810 $self->{ra}->{url} . '/' . $self->repo_path($path);
2811 }
2812
2813 sub rmdirs {
2814 my ($self, $q) = @_;
2815 my $rm = $self->{rm};
2816 delete $rm->{''}; # we never delete the url we're tracking
2817 return unless %$rm;
2818
2819 foreach (keys %$rm) {
2820 my @d = split m#/#, $_;
2821 my $c = shift @d;
2822 $rm->{$c} = 1;
2823 while (@d) {
2824 $c .= '/' . shift @d;
2825 $rm->{$c} = 1;
2826 }
2827 }
2828 delete $rm->{$self->{svn_path}};
2829 delete $rm->{''}; # we never delete the url we're tracking
2830 return unless %$rm;
2831
2832 my ($fh, $ctx) = command_output_pipe(
2833 qw/ls-tree --name-only -r -z/, $self->{c});
2834 local $/ = "\0";
2835 while (<$fh>) {
2836 chomp;
2837 my @dn = split m#/#, $_;
2838 while (pop @dn) {
2839 delete $rm->{join '/', @dn};
2840 }
2841 unless (%$rm) {
2842 eval { command_close_pipe($fh) };
2843 return;
2844 }
2845 }
2846 command_close_pipe($fh, $ctx);
2847
2848 my ($r, $p, $bat) = ($self->{r}, $self->{pool}, $self->{bat});
2849 foreach my $d (sort { $b =~ tr#/#/# <=> $a =~ tr#/#/# } keys %$rm) {
2850 $self->close_directory($bat->{$d}, $p);
2851 my ($dn) = ($d =~ m#^(.*?)/?(?:[^/]+)$#);
2852 print "\tD+\t/$d/\n" unless $q;
2853 $self->SUPER::delete_entry($d, $r, $bat->{$dn}, $p);
2854 delete $bat->{$d};
2855 }
2856 }
2857
2858 sub open_or_add_dir {
2859 my ($self, $full_path, $baton) = @_;
2860 my $p = SVN::Pool->new;
2861 my $t = $self->{ra}->check_path($full_path, $self->{r}, $p);
2862 $p->clear;
2863 if ($t == $SVN::Node::none) {
2864 return $self->add_directory($full_path, $baton,
2865 undef, -1, $self->{pool});
2866 } elsif ($t == $SVN::Node::dir) {
2867 return $self->open_directory($full_path, $baton,
2868 $self->{r}, $self->{pool});
2869 }
2870 print STDERR "$full_path already exists in repository at ",
2871 "r$self->{r} and it is not a directory (",
2872 ($t == $SVN::Node::file ? 'file' : 'unknown'),"/$t)\n";
2873 exit 1;
2874 }
2875
2876 sub ensure_path {
2877 my ($self, $path) = @_;
2878 my $bat = $self->{bat};
2879 $path = $self->repo_path($path);
2880 return $bat->{''} unless (length $path);
2881 my @p = split m#/+#, $path;
2882 my $c = shift @p;
2883 $bat->{$c} ||= $self->open_or_add_dir($c, $bat->{''});
2884 while (@p) {
2885 my $c0 = $c;
2886 $c .= '/' . shift @p;
2887 $bat->{$c} ||= $self->open_or_add_dir($c, $bat->{$c0});
2888 }
2889 return $bat->{$c};
2890 }
2891
2892 sub A {
2893 my ($self, $m, $q) = @_;
2894 my ($dir, $file) = split_path($m->{file_b});
2895 my $pbat = $self->ensure_path($dir);
2896 my $fbat = $self->add_file($self->repo_path($m->{file_b}), $pbat,
2897 undef, -1);
2898 print "\tA\t$m->{file_b}\n" unless $q;
2899 $self->chg_file($fbat, $m);
2900 $self->close_file($fbat,undef,$self->{pool});
2901 }
2902
2903 sub C {
2904 my ($self, $m, $q) = @_;
2905 my ($dir, $file) = split_path($m->{file_b});
2906 my $pbat = $self->ensure_path($dir);
2907 my $fbat = $self->add_file($self->repo_path($m->{file_b}), $pbat,
2908 $self->url_path($m->{file_a}), $self->{r});
2909 print "\tC\t$m->{file_a} => $m->{file_b}\n" unless $q;
2910 $self->chg_file($fbat, $m);
2911 $self->close_file($fbat,undef,$self->{pool});
2912 }
2913
2914 sub delete_entry {
2915 my ($self, $path, $pbat) = @_;
2916 my $rpath = $self->repo_path($path);
2917 my ($dir, $file) = split_path($rpath);
2918 $self->{rm}->{$dir} = 1;
2919 $self->SUPER::delete_entry($rpath, $self->{r}, $pbat, $self->{pool});
2920 }
2921
2922 sub R {
2923 my ($self, $m, $q) = @_;
2924 my ($dir, $file) = split_path($m->{file_b});
2925 my $pbat = $self->ensure_path($dir);
2926 my $fbat = $self->add_file($self->repo_path($m->{file_b}), $pbat,
2927 $self->url_path($m->{file_a}), $self->{r});
2928 print "\tR\t$m->{file_a} => $m->{file_b}\n" unless $q;
2929 $self->chg_file($fbat, $m);
2930 $self->close_file($fbat,undef,$self->{pool});
2931
2932 ($dir, $file) = split_path($m->{file_a});
2933 $pbat = $self->ensure_path($dir);
2934 $self->delete_entry($m->{file_a}, $pbat);
2935 }
2936
2937 sub M {
2938 my ($self, $m, $q) = @_;
2939 my ($dir, $file) = split_path($m->{file_b});
2940 my $pbat = $self->ensure_path($dir);
2941 my $fbat = $self->open_file($self->repo_path($m->{file_b}),
2942 $pbat,$self->{r},$self->{pool});
2943 print "\t$m->{chg}\t$m->{file_b}\n" unless $q;
2944 $self->chg_file($fbat, $m);
2945 $self->close_file($fbat,undef,$self->{pool});
2946 }
2947
2948 sub T { shift->M(@_) }
2949
2950 sub change_file_prop {
2951 my ($self, $fbat, $pname, $pval) = @_;
2952 $self->SUPER::change_file_prop($fbat, $pname, $pval, $self->{pool});
2953 }
2954
2955 sub chg_file {
2956 my ($self, $fbat, $m) = @_;
2957 if ($m->{mode_b} =~ /755$/ && $m->{mode_a} !~ /755$/) {
2958 $self->change_file_prop($fbat,'svn:executable','*');
2959 } elsif ($m->{mode_b} !~ /755$/ && $m->{mode_a} =~ /755$/) {
2960 $self->change_file_prop($fbat,'svn:executable',undef);
2961 }
2962 my $fh = IO::File->new_tmpfile or croak $!;
2963 if ($m->{mode_b} =~ /^120/) {
2964 print $fh 'link ' or croak $!;
2965 $self->change_file_prop($fbat,'svn:special','*');
2966 } elsif ($m->{mode_a} =~ /^120/ && $m->{mode_b} !~ /^120/) {
2967 $self->change_file_prop($fbat,'svn:special',undef);
2968 }
2969 defined(my $pid = fork) or croak $!;
2970 if (!$pid) {
2971 open STDOUT, '>&', $fh or croak $!;
2972 exec qw/git-cat-file blob/, $m->{sha1_b} or croak $!;
2973 }
2974 waitpid $pid, 0;
2975 croak $? if $?;
2976 $fh->flush == 0 or croak $!;
2977 seek $fh, 0, 0 or croak $!;
2978
2979 my $md5 = Digest::MD5->new;
2980 $md5->addfile($fh) or croak $!;
2981 seek $fh, 0, 0 or croak $!;
2982
2983 my $exp = $md5->hexdigest;
2984 my $pool = SVN::Pool->new;
2985 my $atd = $self->apply_textdelta($fbat, undef, $pool);
2986 my $got = SVN::TxDelta::send_stream($fh, @$atd, $pool);
2987 die "Checksum mismatch\nexpected: $exp\ngot: $got\n" if ($got ne $exp);
2988 $pool->clear;
2989
2990 close $fh or croak $!;
2991 }
2992
2993 sub D {
2994 my ($self, $m, $q) = @_;
2995 my ($dir, $file) = split_path($m->{file_b});
2996 my $pbat = $self->ensure_path($dir);
2997 print "\tD\t$m->{file_b}\n" unless $q;
2998 $self->delete_entry($m->{file_b}, $pbat);
2999 }
3000
3001 sub close_edit {
3002 my ($self) = @_;
3003 my ($p,$bat) = ($self->{pool}, $self->{bat});
3004 foreach (sort { $b =~ tr#/#/# <=> $a =~ tr#/#/# } keys %$bat) {
3005 $self->close_directory($bat->{$_}, $p);
3006 }
3007 $self->SUPER::close_edit($p);
3008 $p->clear;
3009 }
3010
3011 sub abort_edit {
3012 my ($self) = @_;
3013 $self->SUPER::abort_edit($self->{pool});
3014 $self->{pool}->clear;
3015 }
3016
3017 __END__
3018
3019 Data structures:
3020
3021 $log_msg hashref as returned by libsvn_log_entry()
3022 {
3023 msg => 'whitespace-formatted log entry
3024 ', # trailing newline is preserved
3025 revision => '8', # integer
3026 date => '2004-02-24T17:01:44.108345Z', # commit date
3027 author => 'committer name'
3028 };
3029
3030 @mods = array of diff-index line hashes, each element represents one line
3031 of diff-index output
3032
3033 diff-index line ($m hash)
3034 {
3035 mode_a => first column of diff-index output, no leading ':',
3036 mode_b => second column of diff-index output,
3037 sha1_b => sha1sum of the final blob,
3038 chg => change type [MCRADT],
3039 file_a => original file name of a file (iff chg is 'C' or 'R')
3040 file_b => new/current file name of a file (any chg)
3041 }
3042 ;
3043
3044 # retval of read_url_paths{,_all}();
3045 $l_map = {
3046 # repository root url
3047 'https://svn.musicpd.org' => {
3048 # repository path # GIT_SVN_ID
3049 'mpd/trunk' => 'trunk',
3050 'mpd/tags/0.11.5' => 'tags/0.11.5',
3051 },
3052 }
3053
3054 Notes:
3055 I don't trust the each() function on unless I created %hash myself
3056 because the internal iterator may not have started at base.
MinGW port of GIT