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gitweb: Remove git_to_hash function
[git.git] / git-svn.perl
blob9382a15044987fd97bfc659b2b0ed6eba334af1a
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 $| = 1; # unbuffer STDOUT
23
24 # If SVN:: library support is added, please make the dependencies
25 # optional and preserve the capability to use the command-line client.
26 # use eval { require SVN::... } to make it lazy load
27 # We don't use any modules not in the standard Perl distribution:
28 use Carp qw/croak/;
29 use IO::File qw//;
30 use File::Basename qw/dirname basename/;
31 use File::Path qw/mkpath/;
32 use Getopt::Long qw/:config gnu_getopt no_ignore_case auto_abbrev pass_through/;
33 use File::Spec qw//;
34 use File::Copy qw/copy/;
35 use POSIX qw/strftime/;
36 use IPC::Open3;
37 use Memoize;
38 memoize('revisions_eq');
39 memoize('cmt_metadata');
40 memoize('get_commit_time');
41
42 my ($SVN_PATH, $SVN, $SVN_LOG, $_use_lib);
43 $_use_lib = 1 unless $ENV{GIT_SVN_NO_LIB};
44 libsvn_load();
45 my $_optimize_commits = 1 unless $ENV{GIT_SVN_NO_OPTIMIZE_COMMITS};
46 my $sha1 = qr/[a-f\d]{40}/;
47 my $sha1_short = qr/[a-f\d]{4,40}/;
48 my ($_revision,$_stdin,$_no_ignore_ext,$_no_stop_copy,$_help,$_rmdir,$_edit,
49 $_find_copies_harder, $_l, $_cp_similarity, $_cp_remote,
50 $_repack, $_repack_nr, $_repack_flags, $_q,
51 $_message, $_file, $_follow_parent, $_no_metadata,
52 $_template, $_shared, $_no_default_regex, $_no_graft_copy,
53 $_limit, $_verbose, $_incremental, $_oneline, $_l_fmt, $_show_commit,
54 $_version, $_upgrade, $_authors, $_branch_all_refs, @_opt_m,
55 $_merge, $_strategy, $_dry_run);
56 my (@_branch_from, %tree_map, %users, %rusers, %equiv);
57 my ($_svn_co_url_revs, $_svn_pg_peg_revs);
58 my @repo_path_split_cache;
59
60 my %fc_opts = ( 'no-ignore-externals' => \$_no_ignore_ext,
61 'branch|b=s' => \@_branch_from,
62 'follow-parent|follow' => \$_follow_parent,
63 'branch-all-refs|B' => \$_branch_all_refs,
64 'authors-file|A=s' => \$_authors,
65 'repack:i' => \$_repack,
66 'no-metadata' => \$_no_metadata,
67 'quiet|q' => \$_q,
68 'repack-flags|repack-args|repack-opts=s' => \$_repack_flags);
69
70 my ($_trunk, $_tags, $_branches);
71 my %multi_opts = ( 'trunk|T=s' => \$_trunk,
72 'tags|t=s' => \$_tags,
73 'branches|b=s' => \$_branches );
74 my %init_opts = ( 'template=s' => \$_template, 'shared' => \$_shared );
75 my %cmt_opts = ( 'edit|e' => \$_edit,
76 'rmdir' => \$_rmdir,
77 'find-copies-harder' => \$_find_copies_harder,
78 'l=i' => \$_l,
79 'copy-similarity|C=i'=> \$_cp_similarity
80 );
81
82 my %cmd = (
83 fetch => [ \&fetch, "Download new revisions from SVN",
84 { 'revision|r=s' => \$_revision, %fc_opts } ],
85 init => [ \&init, "Initialize a repo for tracking" .
86 " (requires URL argument)",
87 \%init_opts ],
88 commit => [ \&commit, "Commit git revisions to SVN",
89 { 'stdin|' => \$_stdin, %cmt_opts, %fc_opts, } ],
90 'show-ignore' => [ \&show_ignore, "Show svn:ignore listings",
91 { 'revision|r=i' => \$_revision } ],
92 rebuild => [ \&rebuild, "Rebuild git-svn metadata (after git clone)",
93 { 'no-ignore-externals' => \$_no_ignore_ext,
94 'copy-remote|remote=s' => \$_cp_remote,
95 'upgrade' => \$_upgrade } ],
96 'graft-branches' => [ \&graft_branches,
97 'Detect merges/branches from already imported history',
98 { 'merge-rx|m' => \@_opt_m,
99 'branch|b=s' => \@_branch_from,
100 'branch-all-refs|B' => \$_branch_all_refs,
101 'no-default-regex' => \$_no_default_regex,
102 'no-graft-copy' => \$_no_graft_copy } ],
103 'multi-init' => [ \&multi_init,
104 'Initialize multiple trees (like git-svnimport)',
105 { %multi_opts, %fc_opts } ],
106 'multi-fetch' => [ \&multi_fetch,
107 'Fetch multiple trees (like git-svnimport)',
108 \%fc_opts ],
109 'log' => [ \&show_log, 'Show commit logs',
110 { 'limit=i' => \$_limit,
111 'revision|r=s' => \$_revision,
112 'verbose|v' => \$_verbose,
113 'incremental' => \$_incremental,
114 'oneline' => \$_oneline,
115 'show-commit' => \$_show_commit,
116 'authors-file|A=s' => \$_authors,
117 } ],
118 'commit-diff' => [ \&commit_diff, 'Commit a diff between two trees',
119 { 'message|m=s' => \$_message,
120 'file|F=s' => \$_file,
121 %cmt_opts } ],
122 dcommit => [ \&dcommit, 'Commit several diffs to merge with upstream',
123 { 'merge|m|M' => \$_merge,
124 'strategy|s=s' => \$_strategy,
125 'dry-run|n' => \$_dry_run,
126 %cmt_opts } ],
127 );
128
129 my $cmd;
130 for (my $i = 0; $i < @ARGV; $i++) {
131 if (defined $cmd{$ARGV[$i]}) {
132 $cmd = $ARGV[$i];
133 splice @ARGV, $i, 1;
134 last;
135 }
136 };
137
138 my %opts = %{$cmd{$cmd}->[2]} if (defined $cmd);
139
140 read_repo_config(\%opts);
141 my $rv = GetOptions(%opts, 'help|H|h' => \$_help,
142 'version|V' => \$_version,
143 'id|i=s' => \$GIT_SVN);
144 exit 1 if (!$rv && $cmd ne 'log');
145
146 set_default_vals();
147 usage(0) if $_help;
148 version() if $_version;
149 usage(1) unless defined $cmd;
150 init_vars();
151 load_authors() if $_authors;
152 load_all_refs() if $_branch_all_refs;
153 svn_compat_check() unless $_use_lib;
154 migration_check() unless $cmd =~ /^(?:init|rebuild|multi-init|commit-diff)$/;
155 $cmd{$cmd}->[0]->(@ARGV);
156 exit 0;
157
158 ####################### primary functions ######################
159 sub usage {
160 my $exit = shift || 0;
161 my $fd = $exit ? \*STDERR : \*STDOUT;
162 print $fd <<"";
163 git-svn - bidirectional operations between a single Subversion tree and git
164 Usage: $0 <command> [options] [arguments]\n
165
166 print $fd "Available commands:\n" unless $cmd;
167
168 foreach (sort keys %cmd) {
169 next if $cmd && $cmd ne $_;
170 print $fd ' ',pack('A13',$_),$cmd{$_}->[1],"\n";
171 foreach (keys %{$cmd{$_}->[2]}) {
172 # prints out arguments as they should be passed:
173 my $x = s#[:=]s$## ? '<arg>' : s#[:=]i$## ? '<num>' : '';
174 print $fd ' ' x 17, join(', ', map { length $_ > 1 ?
175 "--$_" : "-$_" }
176 split /\|/,$_)," $x\n";
177 }
178 }
179 print $fd <<"";
180 \nGIT_SVN_ID may be set in the environment or via the --id/-i switch to an
181 arbitrary identifier if you're tracking multiple SVN branches/repositories in
182 one git repository and want to keep them separate. See git-svn(1) for more
183 information.
184
185 exit $exit;
186 }
187
188 sub version {
189 print "git-svn version $VERSION\n";
190 exit 0;
191 }
192
193 sub rebuild {
194 if (quiet_run(qw/git-rev-parse --verify/,"refs/remotes/$GIT_SVN^0")) {
195 copy_remote_ref();
196 }
197 $SVN_URL = shift or undef;
198 my $newest_rev = 0;
199 if ($_upgrade) {
200 sys('git-update-ref',"refs/remotes/$GIT_SVN","$GIT_SVN-HEAD");
201 } else {
202 check_upgrade_needed();
203 }
204
205 my $pid = open(my $rev_list,'-|');
206 defined $pid or croak $!;
207 if ($pid == 0) {
208 exec("git-rev-list","refs/remotes/$GIT_SVN") or croak $!;
209 }
210 my $latest;
211 while (<$rev_list>) {
212 chomp;
213 my $c = $_;
214 croak "Non-SHA1: $c\n" unless $c =~ /^$sha1$/o;
215 my @commit = grep(/^git-svn-id: /,`git-cat-file commit $c`);
216 next if (!@commit); # skip merges
217 my ($url, $rev, $uuid) = extract_metadata($commit[$#commit]);
218 if (!$rev || !$uuid) {
219 croak "Unable to extract revision or UUID from ",
220 "$c, $commit[$#commit]\n";
221 }
222
223 # if we merged or otherwise started elsewhere, this is
224 # how we break out of it
225 next if (defined $SVN_UUID && ($uuid ne $SVN_UUID));
226 next if (defined $SVN_URL && defined $url && ($url ne $SVN_URL));
227
228 unless (defined $latest) {
229 if (!$SVN_URL && !$url) {
230 croak "SVN repository location required: $url\n";
231 }
232 $SVN_URL ||= $url;
233 $SVN_UUID ||= $uuid;
234 setup_git_svn();
235 $latest = $rev;
236 }
237 revdb_set($REVDB, $rev, $c);
238 print "r$rev = $c\n";
239 $newest_rev = $rev if ($rev > $newest_rev);
240 }
241 close $rev_list or croak $?;
242
243 goto out if $_use_lib;
244 if (!chdir $SVN_WC) {
245 svn_cmd_checkout($SVN_URL, $latest, $SVN_WC);
246 chdir $SVN_WC or croak $!;
247 }
248
249 $pid = fork;
250 defined $pid or croak $!;
251 if ($pid == 0) {
252 my @svn_up = qw(svn up);
253 push @svn_up, '--ignore-externals' unless $_no_ignore_ext;
254 sys(@svn_up,"-r$newest_rev");
255 $ENV{GIT_INDEX_FILE} = $GIT_SVN_INDEX;
256 index_changes();
257 exec('git-write-tree') or croak $!;
258 }
259 waitpid $pid, 0;
260 croak $? if $?;
261 out:
262 if ($_upgrade) {
263 print STDERR <<"";
264 Keeping deprecated refs/head/$GIT_SVN-HEAD for now. Please remove it
265 when you have upgraded your tools and habits to use refs/remotes/$GIT_SVN
266
267 }
268 }
269
270 sub init {
271 my $url = shift or die "SVN repository location required " .
272 "as a command-line argument\n";
273 $url =~ s!/+$!!; # strip trailing slash
274
275 if (my $repo_path = shift) {
276 unless (-d $repo_path) {
277 mkpath([$repo_path]);
278 }
279 $GIT_DIR = $ENV{GIT_DIR} = $repo_path . "/.git";
280 init_vars();
281 }
282
283 $SVN_URL = $url;
284 unless (-d $GIT_DIR) {
285 my @init_db = ('git-init-db');
286 push @init_db, "--template=$_template" if defined $_template;
287 push @init_db, "--shared" if defined $_shared;
288 sys(@init_db);
289 }
290 setup_git_svn();
291 }
292
293 sub fetch {
294 check_upgrade_needed();
295 $SVN_URL ||= file_to_s("$GIT_SVN_DIR/info/url");
296 my $ret = $_use_lib ? fetch_lib(@_) : fetch_cmd(@_);
297 if ($ret->{commit} && quiet_run(qw(git-rev-parse --verify
298 refs/heads/master^0))) {
299 sys(qw(git-update-ref refs/heads/master),$ret->{commit});
300 }
301 return $ret;
302 }
303
304 sub fetch_cmd {
305 my (@parents) = @_;
306 my @log_args = -d $SVN_WC ? ($SVN_WC) : ($SVN_URL);
307 unless ($_revision) {
308 $_revision = -d $SVN_WC ? 'BASE:HEAD' : '0:HEAD';
309 }
310 push @log_args, "-r$_revision";
311 push @log_args, '--stop-on-copy' unless $_no_stop_copy;
312
313 my $svn_log = svn_log_raw(@log_args);
314
315 my $base = next_log_entry($svn_log) or croak "No base revision!\n";
316 # don't need last_revision from grab_base_rev() because
317 # user could've specified a different revision to skip (they
318 # didn't want to import certain revisions into git for whatever
319 # reason, so trust $base->{revision} instead.
320 my (undef, $last_commit) = svn_grab_base_rev();
321 unless (-d $SVN_WC) {
322 svn_cmd_checkout($SVN_URL,$base->{revision},$SVN_WC);
323 chdir $SVN_WC or croak $!;
324 read_uuid();
325 $last_commit = git_commit($base, @parents);
326 assert_tree($last_commit);
327 } else {
328 chdir $SVN_WC or croak $!;
329 read_uuid();
330 # looks like a user manually cp'd and svn switch'ed
331 unless ($last_commit) {
332 sys(qw/svn revert -R ./);
333 assert_svn_wc_clean($base->{revision});
334 $last_commit = git_commit($base, @parents);
335 assert_tree($last_commit);
336 }
337 }
338 my @svn_up = qw(svn up);
339 push @svn_up, '--ignore-externals' unless $_no_ignore_ext;
340 my $last = $base;
341 while (my $log_msg = next_log_entry($svn_log)) {
342 if ($last->{revision} >= $log_msg->{revision}) {
343 croak "Out of order: last >= current: ",
344 "$last->{revision} >= $log_msg->{revision}\n";
345 }
346 # Revert is needed for cases like:
347 # https://svn.musicpd.org/Jamming/trunk (r166:167), but
348 # I can't seem to reproduce something like that on a test...
349 sys(qw/svn revert -R ./);
350 assert_svn_wc_clean($last->{revision});
351 sys(@svn_up,"-r$log_msg->{revision}");
352 $last_commit = git_commit($log_msg, $last_commit, @parents);
353 $last = $log_msg;
354 }
355 close $svn_log->{fh};
356 $last->{commit} = $last_commit;
357 return $last;
358 }
359
360 sub fetch_lib {
361 my (@parents) = @_;
362 $SVN_URL ||= file_to_s("$GIT_SVN_DIR/info/url");
363 my $repo;
364 ($repo, $SVN_PATH) = repo_path_split($SVN_URL);
365 $SVN_LOG ||= libsvn_connect($repo);
366 $SVN ||= libsvn_connect($repo);
367 my ($last_rev, $last_commit) = svn_grab_base_rev();
368 my ($base, $head) = libsvn_parse_revision($last_rev);
369 if ($base > $head) {
370 return { revision => $last_rev, commit => $last_commit }
371 }
372 my $index = set_index($GIT_SVN_INDEX);
373
374 # limit ourselves and also fork() since get_log won't release memory
375 # after processing a revision and SVN stuff seems to leak
376 my $inc = 1000;
377 my ($min, $max) = ($base, $head < $base+$inc ? $head : $base+$inc);
378 read_uuid();
379 if (defined $last_commit) {
380 unless (-e $GIT_SVN_INDEX) {
381 sys(qw/git-read-tree/, $last_commit);
382 }
383 chomp (my $x = `git-write-tree`);
384 my ($y) = (`git-cat-file commit $last_commit`
385 =~ /^tree ($sha1)/m);
386 if ($y ne $x) {
387 unlink $GIT_SVN_INDEX or croak $!;
388 sys(qw/git-read-tree/, $last_commit);
389 }
390 chomp ($x = `git-write-tree`);
391 if ($y ne $x) {
392 print STDERR "trees ($last_commit) $y != $x\n",
393 "Something is seriously wrong...\n";
394 }
395 }
396 while (1) {
397 # fork, because using SVN::Pool with get_log() still doesn't
398 # seem to help enough to keep memory usage down.
399 defined(my $pid = fork) or croak $!;
400 if (!$pid) {
401 $SVN::Error::handler = \&libsvn_skip_unknown_revs;
402
403 # Yes I'm perfectly aware that the fourth argument
404 # below is the limit revisions number. Unfortunately
405 # performance sucks with it enabled, so it's much
406 # faster to fetch revision ranges instead of relying
407 # on the limiter.
408 libsvn_get_log($SVN_LOG, '/'.$SVN_PATH,
409 $min, $max, 0, 1, 1,
410 sub {
411 my $log_msg;
412 if ($last_commit) {
413 $log_msg = libsvn_fetch(
414 $last_commit, @_);
415 $last_commit = git_commit(
416 $log_msg,
417 $last_commit,
418 @parents);
419 } else {
420 $log_msg = libsvn_new_tree(@_);
421 $last_commit = git_commit(
422 $log_msg, @parents);
423 }
424 });
425 exit 0;
426 }
427 waitpid $pid, 0;
428 croak $? if $?;
429 ($last_rev, $last_commit) = svn_grab_base_rev();
430 last if ($max >= $head);
431 $min = $max + 1;
432 $max += $inc;
433 $max = $head if ($max > $head);
434 }
435 restore_index($index);
436 return { revision => $last_rev, commit => $last_commit };
437 }
438
439 sub commit {
440 my (@commits) = @_;
441 check_upgrade_needed();
442 if ($_stdin || !@commits) {
443 print "Reading from stdin...\n";
444 @commits = ();
445 while (<STDIN>) {
446 if (/\b($sha1_short)\b/o) {
447 unshift @commits, $1;
448 }
449 }
450 }
451 my @revs;
452 foreach my $c (@commits) {
453 chomp(my @tmp = safe_qx('git-rev-parse',$c));
454 if (scalar @tmp == 1) {
455 push @revs, $tmp[0];
456 } elsif (scalar @tmp > 1) {
457 push @revs, reverse (safe_qx('git-rev-list',@tmp));
458 } else {
459 die "Failed to rev-parse $c\n";
460 }
461 }
462 chomp @revs;
463 $_use_lib ? commit_lib(@revs) : commit_cmd(@revs);
464 print "Done committing ",scalar @revs," revisions to SVN\n";
465 }
466
467 sub commit_cmd {
468 my (@revs) = @_;
469
470 chdir $SVN_WC or croak "Unable to chdir $SVN_WC: $!\n";
471 my $info = svn_info('.');
472 my $fetched = fetch();
473 if ($info->{Revision} != $fetched->{revision}) {
474 print STDERR "There are new revisions that were fetched ",
475 "and need to be merged (or acknowledged) ",
476 "before committing.\n";
477 exit 1;
478 }
479 $info = svn_info('.');
480 read_uuid($info);
481 my $last = $fetched;
482 foreach my $c (@revs) {
483 my $mods = svn_checkout_tree($last, $c);
484 if (scalar @$mods == 0) {
485 print "Skipping, no changes detected\n";
486 next;
487 }
488 $last = svn_commit_tree($last, $c);
489 }
490 }
491
492 sub commit_lib {
493 my (@revs) = @_;
494 my ($r_last, $cmt_last) = svn_grab_base_rev();
495 defined $r_last or die "Must have an existing revision to commit\n";
496 my $fetched = fetch();
497 if ($r_last != $fetched->{revision}) {
498 print STDERR "There are new revisions that were fetched ",
499 "and need to be merged (or acknowledged) ",
500 "before committing.\n",
501 "last rev: $r_last\n",
502 " current: $fetched->{revision}\n";
503 exit 1;
504 }
505 read_uuid();
506 my @lock = $SVN::Core::VERSION ge '1.2.0' ? (undef, 0) : ();
507 my $commit_msg = "$GIT_SVN_DIR/.svn-commit.tmp.$$";
508
509 my $repo;
510 ($repo, $SVN_PATH) = repo_path_split($SVN_URL);
511 set_svn_commit_env();
512 foreach my $c (@revs) {
513 my $log_msg = get_commit_message($c, $commit_msg);
514
515 # fork for each commit because there's a memory leak I
516 # can't track down... (it's probably in the SVN code)
517 defined(my $pid = open my $fh, '-|') or croak $!;
518 if (!$pid) {
519 $SVN_LOG = libsvn_connect($repo);
520 $SVN = libsvn_connect($repo);
521 my $ed = SVN::Git::Editor->new(
522 { r => $r_last,
523 ra => $SVN,
524 c => $c,
525 svn_path => $SVN_PATH
526 },
527 $SVN->get_commit_editor(
528 $log_msg->{msg},
529 sub {
530 libsvn_commit_cb(
531 @_, $c,
532 $log_msg->{msg},
533 $r_last,
534 $cmt_last)
535 },
536 @lock)
537 );
538 my $mods = libsvn_checkout_tree($cmt_last, $c, $ed);
539 if (@$mods == 0) {
540 print "No changes\nr$r_last = $cmt_last\n";
541 $ed->abort_edit;
542 } else {
543 $ed->close_edit;
544 }
545 exit 0;
546 }
547 my ($r_new, $cmt_new, $no);
548 while (<$fh>) {
549 print $_;
550 chomp;
551 if (/^r(\d+) = ($sha1)$/o) {
552 ($r_new, $cmt_new) = ($1, $2);
553 } elsif ($_ eq 'No changes') {
554 $no = 1;
555 }
556 }
557 close $fh or croak $?;
558 if (! defined $r_new && ! defined $cmt_new) {
559 unless ($no) {
560 die "Failed to parse revision information\n";
561 }
562 } else {
563 ($r_last, $cmt_last) = ($r_new, $cmt_new);
564 }
565 }
566 $ENV{LC_ALL} = 'C';
567 unlink $commit_msg;
568 }
569
570 sub dcommit {
571 my $gs = "refs/remotes/$GIT_SVN";
572 chomp(my @refs = safe_qx(qw/git-rev-list --no-merges/, "$gs..HEAD"));
573 foreach my $d (reverse @refs) {
574 if ($_dry_run) {
575 print "diff-tree $d~1 $d\n";
576 } else {
577 commit_diff("$d~1", $d);
578 }
579 }
580 return if $_dry_run;
581 fetch();
582 my @diff = safe_qx(qw/git-diff-tree HEAD/, $gs);
583 my @finish;
584 if (@diff) {
585 @finish = qw/rebase/;
586 push @finish, qw/--merge/ if $_merge;
587 push @finish, "--strategy=$_strategy" if $_strategy;
588 print STDERR "W: HEAD and $gs differ, using @finish:\n", @diff;
589 } else {
590 print "No changes between current HEAD and $gs\n",
591 "Hard resetting to the latest $gs\n";
592 @finish = qw/reset --hard/;
593 }
594 sys('git', @finish, $gs);
595 }
596
597 sub show_ignore {
598 $SVN_URL ||= file_to_s("$GIT_SVN_DIR/info/url");
599 $_use_lib ? show_ignore_lib() : show_ignore_cmd();
600 }
601
602 sub show_ignore_cmd {
603 require File::Find or die $!;
604 if (defined $_revision) {
605 die "-r/--revision option doesn't work unless the Perl SVN ",
606 "libraries are used\n";
607 }
608 chdir $SVN_WC or croak $!;
609 my %ign;
610 File::Find::find({wanted=>sub{if(lstat $_ && -d _ && -d "$_/.svn"){
611 s#^\./##;
612 @{$ign{$_}} = svn_propget_base('svn:ignore', $_);
613 }}, no_chdir=>1},'.');
614
615 print "\n# /\n";
616 foreach (@{$ign{'.'}}) { print '/',$_ if /\S/ }
617 delete $ign{'.'};
618 foreach my $i (sort keys %ign) {
619 print "\n# ",$i,"\n";
620 foreach (@{$ign{$i}}) { print '/',$i,'/',$_ if /\S/ }
621 }
622 }
623
624 sub show_ignore_lib {
625 my $repo;
626 ($repo, $SVN_PATH) = repo_path_split($SVN_URL);
627 $SVN ||= libsvn_connect($repo);
628 my $r = defined $_revision ? $_revision : $SVN->get_latest_revnum;
629 libsvn_traverse_ignore(\*STDOUT, $SVN_PATH, $r);
630 }
631
632 sub graft_branches {
633 my $gr_file = "$GIT_DIR/info/grafts";
634 my ($grafts, $comments) = read_grafts($gr_file);
635 my $gr_sha1;
636
637 if (%$grafts) {
638 # temporarily disable our grafts file to make this idempotent
639 chomp($gr_sha1 = safe_qx(qw/git-hash-object -w/,$gr_file));
640 rename $gr_file, "$gr_file~$gr_sha1" or croak $!;
641 }
642
643 my $l_map = read_url_paths();
644 my @re = map { qr/$_/is } @_opt_m if @_opt_m;
645 unless ($_no_default_regex) {
646 push @re, (qr/\b(?:merge|merging|merged)\s+with\s+([\w\.\-]+)/i,
647 qr/\b(?:merge|merging|merged)\s+([\w\.\-]+)/i,
648 qr/\b(?:from|of)\s+([\w\.\-]+)/i );
649 }
650 foreach my $u (keys %$l_map) {
651 if (@re) {
652 foreach my $p (keys %{$l_map->{$u}}) {
653 graft_merge_msg($grafts,$l_map,$u,$p,@re);
654 }
655 }
656 unless ($_no_graft_copy) {
657 if ($_use_lib) {
658 graft_file_copy_lib($grafts,$l_map,$u);
659 } else {
660 graft_file_copy_cmd($grafts,$l_map,$u);
661 }
662 }
663 }
664 graft_tree_joins($grafts);
665
666 write_grafts($grafts, $comments, $gr_file);
667 unlink "$gr_file~$gr_sha1" if $gr_sha1;
668 }
669
670 sub multi_init {
671 my $url = shift;
672 $_trunk ||= 'trunk';
673 $_trunk =~ s#/+$##;
674 $url =~ s#/+$## if $url;
675 if ($_trunk !~ m#^[a-z\+]+://#) {
676 $_trunk = '/' . $_trunk if ($_trunk !~ m#^/#);
677 unless ($url) {
678 print STDERR "E: '$_trunk' is not a complete URL ",
679 "and a separate URL is not specified\n";
680 exit 1;
681 }
682 $_trunk = $url . $_trunk;
683 }
684 if ($GIT_SVN eq 'git-svn') {
685 print "GIT_SVN_ID set to 'trunk' for $_trunk\n";
686 $GIT_SVN = $ENV{GIT_SVN_ID} = 'trunk';
687 }
688 init_vars();
689 init($_trunk);
690 complete_url_ls_init($url, $_branches, '--branches/-b', '');
691 complete_url_ls_init($url, $_tags, '--tags/-t', 'tags/');
692 }
693
694 sub multi_fetch {
695 # try to do trunk first, since branches/tags
696 # may be descended from it.
697 if (-e "$GIT_DIR/svn/trunk/info/url") {
698 fetch_child_id('trunk', @_);
699 }
700 rec_fetch('', "$GIT_DIR/svn", @_);
701 }
702
703 sub show_log {
704 my (@args) = @_;
705 my ($r_min, $r_max);
706 my $r_last = -1; # prevent dupes
707 rload_authors() if $_authors;
708 if (defined $TZ) {
709 $ENV{TZ} = $TZ;
710 } else {
711 delete $ENV{TZ};
712 }
713 if (defined $_revision) {
714 if ($_revision =~ /^(\d+):(\d+)$/) {
715 ($r_min, $r_max) = ($1, $2);
716 } elsif ($_revision =~ /^\d+$/) {
717 $r_min = $r_max = $_revision;
718 } else {
719 print STDERR "-r$_revision is not supported, use ",
720 "standard \'git log\' arguments instead\n";
721 exit 1;
722 }
723 }
724
725 my $pid = open(my $log,'-|');
726 defined $pid or croak $!;
727 if (!$pid) {
728 exec(git_svn_log_cmd($r_min,$r_max), @args) or croak $!;
729 }
730 setup_pager();
731 my (@k, $c, $d);
732
733 while (<$log>) {
734 if (/^commit ($sha1_short)/o) {
735 my $cmt = $1;
736 if ($c && cmt_showable($c) && $c->{r} != $r_last) {
737 $r_last = $c->{r};
738 process_commit($c, $r_min, $r_max, \@k) or
739 goto out;
740 }
741 $d = undef;
742 $c = { c => $cmt };
743 } elsif (/^author (.+) (\d+) ([\-\+]?\d+)$/) {
744 get_author_info($c, $1, $2, $3);
745 } elsif (/^(?:tree|parent|committer) /) {
746 # ignore
747 } elsif (/^:\d{6} \d{6} $sha1_short/o) {
748 push @{$c->{raw}}, $_;
749 } elsif (/^diff /) {
750 $d = 1;
751 push @{$c->{diff}}, $_;
752 } elsif ($d) {
753 push @{$c->{diff}}, $_;
754 } elsif (/^ (git-svn-id:.+)$/) {
755 (undef, $c->{r}, undef) = extract_metadata($1);
756 } elsif (s/^ //) {
757 push @{$c->{l}}, $_;
758 }
759 }
760 if ($c && defined $c->{r} && $c->{r} != $r_last) {
761 $r_last = $c->{r};
762 process_commit($c, $r_min, $r_max, \@k);
763 }
764 if (@k) {
765 my $swap = $r_max;
766 $r_max = $r_min;
767 $r_min = $swap;
768 process_commit($_, $r_min, $r_max) foreach reverse @k;
769 }
770 out:
771 close $log;
772 print '-' x72,"\n" unless $_incremental || $_oneline;
773 }
774
775 sub commit_diff_usage {
776 print STDERR "Usage: $0 commit-diff <tree-ish> <tree-ish> [<URL>]\n";
777 exit 1
778 }
779
780 sub commit_diff {
781 if (!$_use_lib) {
782 print STDERR "commit-diff must be used with SVN libraries\n";
783 exit 1;
784 }
785 my $ta = shift or commit_diff_usage();
786 my $tb = shift or commit_diff_usage();
787 if (!eval { $SVN_URL = shift || file_to_s("$GIT_SVN_DIR/info/url") }) {
788 print STDERR "Needed URL or usable git-svn id command-line\n";
789 commit_diff_usage();
790 }
791 if (defined $_message && defined $_file) {
792 print STDERR "Both --message/-m and --file/-F specified ",
793 "for the commit message.\n",
794 "I have no idea what you mean\n";
795 exit 1;
796 }
797 if (defined $_file) {
798 $_message = file_to_s($_file);
799 } else {
800 $_message ||= get_commit_message($tb,
801 "$GIT_DIR/.svn-commit.tmp.$$")->{msg};
802 }
803 my $repo;
804 ($repo, $SVN_PATH) = repo_path_split($SVN_URL);
805 $SVN_LOG ||= libsvn_connect($repo);
806 $SVN ||= libsvn_connect($repo);
807 my @lock = $SVN::Core::VERSION ge '1.2.0' ? (undef, 0) : ();
808 my $ed = SVN::Git::Editor->new({ r => $SVN->get_latest_revnum,
809 ra => $SVN, c => $tb,
810 svn_path => $SVN_PATH
811 },
812 $SVN->get_commit_editor($_message,
813 sub {print "Committed $_[0]\n"},@lock)
814 );
815 my $mods = libsvn_checkout_tree($ta, $tb, $ed);
816 if (@$mods == 0) {
817 print "No changes\n$ta == $tb\n";
818 $ed->abort_edit;
819 } else {
820 $ed->close_edit;
821 }
822 }
823
824 ########################### utility functions #########################
825
826 sub cmt_showable {
827 my ($c) = @_;
828 return 1 if defined $c->{r};
829 if ($c->{l} && $c->{l}->[-1] eq "...\n" &&
830 $c->{a_raw} =~ /\@([a-f\d\-]+)>$/) {
831 my @msg = safe_qx(qw/git-cat-file commit/, $c->{c});
832 shift @msg while ($msg[0] ne "\n");
833 shift @msg;
834 @{$c->{l}} = grep !/^git-svn-id: /, @msg;
835
836 (undef, $c->{r}, undef) = extract_metadata(
837 (grep(/^git-svn-id: /, @msg))[-1]);
838 }
839 return defined $c->{r};
840 }
841
842 sub git_svn_log_cmd {
843 my ($r_min, $r_max) = @_;
844 my @cmd = (qw/git-log --abbrev-commit --pretty=raw
845 --default/, "refs/remotes/$GIT_SVN");
846 push @cmd, '--summary' if $_verbose;
847 return @cmd unless defined $r_max;
848 if ($r_max == $r_min) {
849 push @cmd, '--max-count=1';
850 if (my $c = revdb_get($REVDB, $r_max)) {
851 push @cmd, $c;
852 }
853 } else {
854 my ($c_min, $c_max);
855 $c_max = revdb_get($REVDB, $r_max);
856 $c_min = revdb_get($REVDB, $r_min);
857 if ($c_min && $c_max) {
858 if ($r_max > $r_max) {
859 push @cmd, "$c_min..$c_max";
860 } else {
861 push @cmd, "$c_max..$c_min";
862 }
863 } elsif ($r_max > $r_min) {
864 push @cmd, $c_max;
865 } else {
866 push @cmd, $c_min;
867 }
868 }
869 return @cmd;
870 }
871
872 sub fetch_child_id {
873 my $id = shift;
874 print "Fetching $id\n";
875 my $ref = "$GIT_DIR/refs/remotes/$id";
876 defined(my $pid = open my $fh, '-|') or croak $!;
877 if (!$pid) {
878 $_repack = undef;
879 $GIT_SVN = $ENV{GIT_SVN_ID} = $id;
880 init_vars();
881 fetch(@_);
882 exit 0;
883 }
884 while (<$fh>) {
885 print $_;
886 check_repack() if (/^r\d+ = $sha1/);
887 }
888 close $fh or croak $?;
889 }
890
891 sub rec_fetch {
892 my ($pfx, $p, @args) = @_;
893 my @dir;
894 foreach (sort <$p/*>) {
895 if (-r "$_/info/url") {
896 $pfx .= '/' if $pfx && $pfx !~ m!/$!;
897 my $id = $pfx . basename $_;
898 next if $id eq 'trunk';
899 fetch_child_id($id, @args);
900 } elsif (-d $_) {
901 push @dir, $_;
902 }
903 }
904 foreach (@dir) {
905 my $x = $_;
906 $x =~ s!^\Q$GIT_DIR\E/svn/!!;
907 rec_fetch($x, $_);
908 }
909 }
910
911 sub complete_url_ls_init {
912 my ($url, $var, $switch, $pfx) = @_;
913 unless ($var) {
914 print STDERR "W: $switch not specified\n";
915 return;
916 }
917 $var =~ s#/+$##;
918 if ($var !~ m#^[a-z\+]+://#) {
919 $var = '/' . $var if ($var !~ m#^/#);
920 unless ($url) {
921 print STDERR "E: '$var' is not a complete URL ",
922 "and a separate URL is not specified\n";
923 exit 1;
924 }
925 $var = $url . $var;
926 }
927 chomp(my @ls = $_use_lib ? libsvn_ls_fullurl($var)
928 : safe_qx(qw/svn ls --non-interactive/, $var));
929 my $old = $GIT_SVN;
930 defined(my $pid = fork) or croak $!;
931 if (!$pid) {
932 foreach my $u (map { "$var/$_" } (grep m!/$!, @ls)) {
933 $u =~ s#/+$##;
934 if ($u !~ m!\Q$var\E/(.+)$!) {
935 print STDERR "W: Unrecognized URL: $u\n";
936 die "This should never happen\n";
937 }
938 my $id = $pfx.$1;
939 print "init $u => $id\n";
940 $GIT_SVN = $ENV{GIT_SVN_ID} = $id;
941 init_vars();
942 init($u);
943 }
944 exit 0;
945 }
946 waitpid $pid, 0;
947 croak $? if $?;
948 }
949
950 sub common_prefix {
951 my $paths = shift;
952 my %common;
953 foreach (@$paths) {
954 my @tmp = split m#/#, $_;
955 my $p = '';
956 while (my $x = shift @tmp) {
957 $p .= "/$x";
958 $common{$p} ||= 0;
959 $common{$p}++;
960 }
961 }
962 foreach (sort {length $b <=> length $a} keys %common) {
963 if ($common{$_} == @$paths) {
964 return $_;
965 }
966 }
967 return '';
968 }
969
970 # grafts set here are 'stronger' in that they're based on actual tree
971 # matches, and won't be deleted from merge-base checking in write_grafts()
972 sub graft_tree_joins {
973 my $grafts = shift;
974 map_tree_joins() if (@_branch_from && !%tree_map);
975 return unless %tree_map;
976
977 git_svn_each(sub {
978 my $i = shift;
979 defined(my $pid = open my $fh, '-|') or croak $!;
980 if (!$pid) {
981 exec qw/git-rev-list --pretty=raw/,
982 "refs/remotes/$i" or croak $!;
983 }
984 while (<$fh>) {
985 next unless /^commit ($sha1)$/o;
986 my $c = $1;
987 my ($t) = (<$fh> =~ /^tree ($sha1)$/o);
988 next unless $tree_map{$t};
989
990 my $l;
991 do {
992 $l = readline $fh;
993 } until ($l =~ /^committer (?:.+) (\d+) ([\-\+]?\d+)$/);
994
995 my ($s, $tz) = ($1, $2);
996 if ($tz =~ s/^\+//) {
997 $s += tz_to_s_offset($tz);
998 } elsif ($tz =~ s/^\-//) {
999 $s -= tz_to_s_offset($tz);
1000 }
1001
1002 my ($url_a, $r_a, $uuid_a) = cmt_metadata($c);
1003
1004 foreach my $p (@{$tree_map{$t}}) {
1005 next if $p eq $c;
1006 my $mb = eval {
1007 safe_qx('git-merge-base', $c, $p)
1008 };
1009 next unless ($@ || $?);
1010 if (defined $r_a) {
1011 # see if SVN says it's a relative
1012 my ($url_b, $r_b, $uuid_b) =
1013 cmt_metadata($p);
1014 next if (defined $url_b &&
1015 defined $url_a &&
1016 ($url_a eq $url_b) &&
1017 ($uuid_a eq $uuid_b));
1018 if ($uuid_a eq $uuid_b) {
1019 if ($r_b < $r_a) {
1020 $grafts->{$c}->{$p} = 2;
1021 next;
1022 } elsif ($r_b > $r_a) {
1023 $grafts->{$p}->{$c} = 2;
1024 next;
1025 }
1026 }
1027 }
1028 my $ct = get_commit_time($p);
1029 if ($ct < $s) {
1030 $grafts->{$c}->{$p} = 2;
1031 } elsif ($ct > $s) {
1032 $grafts->{$p}->{$c} = 2;
1033 }
1034 # what should we do when $ct == $s ?
1035 }
1036 }
1037 close $fh or croak $?;
1038 });
1039 }
1040
1041 # this isn't funky-filename safe, but good enough for now...
1042 sub graft_file_copy_cmd {
1043 my ($grafts, $l_map, $u) = @_;
1044 my $paths = $l_map->{$u};
1045 my $pfx = common_prefix([keys %$paths]);
1046 $SVN_URL ||= $u.$pfx;
1047 my $pid = open my $fh, '-|';
1048 defined $pid or croak $!;
1049 unless ($pid) {
1050 my @exec = qw/svn log -v/;
1051 push @exec, "-r$_revision" if defined $_revision;
1052 exec @exec, $u.$pfx or croak $!;
1053 }
1054 my ($r, $mp) = (undef, undef);
1055 while (<$fh>) {
1056 chomp;
1057 if (/^\-{72}$/) {
1058 $mp = $r = undef;
1059 } elsif (/^r(\d+) \| /) {
1060 $r = $1 unless defined $r;
1061 } elsif (/^Changed paths:/) {
1062 $mp = 1;
1063 } elsif ($mp && m#^ [AR] /(\S.*?) \(from /(\S+?):(\d+)\)$#) {
1064 my ($p1, $p0, $r0) = ($1, $2, $3);
1065 my $c = find_graft_path_commit($paths, $p1, $r);
1066 next unless $c;
1067 find_graft_path_parents($grafts, $paths, $c, $p0, $r0);
1068 }
1069 }
1070 }
1071
1072 sub graft_file_copy_lib {
1073 my ($grafts, $l_map, $u) = @_;
1074 my $tree_paths = $l_map->{$u};
1075 my $pfx = common_prefix([keys %$tree_paths]);
1076 my ($repo, $path) = repo_path_split($u.$pfx);
1077 $SVN_LOG ||= libsvn_connect($repo);
1078 $SVN ||= libsvn_connect($repo);
1079
1080 my ($base, $head) = libsvn_parse_revision();
1081 my $inc = 1000;
1082 my ($min, $max) = ($base, $head < $base+$inc ? $head : $base+$inc);
1083 my $eh = $SVN::Error::handler;
1084 $SVN::Error::handler = \&libsvn_skip_unknown_revs;
1085 while (1) {
1086 my $pool = SVN::Pool->new;
1087 libsvn_get_log($SVN_LOG, "/$path", $min, $max, 0, 1, 1,
1088 sub {
1089 libsvn_graft_file_copies($grafts, $tree_paths,
1090 $path, @_);
1091 }, $pool);
1092 $pool->clear;
1093 last if ($max >= $head);
1094 $min = $max + 1;
1095 $max += $inc;
1096 $max = $head if ($max > $head);
1097 }
1098 $SVN::Error::handler = $eh;
1099 }
1100
1101 sub process_merge_msg_matches {
1102 my ($grafts, $l_map, $u, $p, $c, @matches) = @_;
1103 my (@strong, @weak);
1104 foreach (@matches) {
1105 # merging with ourselves is not interesting
1106 next if $_ eq $p;
1107 if ($l_map->{$u}->{$_}) {
1108 push @strong, $_;
1109 } else {
1110 push @weak, $_;
1111 }
1112 }
1113 foreach my $w (@weak) {
1114 last if @strong;
1115 # no exact match, use branch name as regexp.
1116 my $re = qr/\Q$w\E/i;
1117 foreach (keys %{$l_map->{$u}}) {
1118 if (/$re/) {
1119 push @strong, $l_map->{$u}->{$_};
1120 last;
1121 }
1122 }
1123 last if @strong;
1124 $w = basename($w);
1125 $re = qr/\Q$w\E/i;
1126 foreach (keys %{$l_map->{$u}}) {
1127 if (/$re/) {
1128 push @strong, $l_map->{$u}->{$_};
1129 last;
1130 }
1131 }
1132 }
1133 my ($rev) = ($c->{m} =~ /^git-svn-id:\s(?:\S+?)\@(\d+)
1134 \s(?:[a-f\d\-]+)$/xsm);
1135 unless (defined $rev) {
1136 ($rev) = ($c->{m} =~/^git-svn-id:\s(\d+)
1137 \@(?:[a-f\d\-]+)/xsm);
1138 return unless defined $rev;
1139 }
1140 foreach my $m (@strong) {
1141 my ($r0, $s0) = find_rev_before($rev, $m, 1);
1142 $grafts->{$c->{c}}->{$s0} = 1 if defined $s0;
1143 }
1144 }
1145
1146 sub graft_merge_msg {
1147 my ($grafts, $l_map, $u, $p, @re) = @_;
1148
1149 my $x = $l_map->{$u}->{$p};
1150 my $rl = rev_list_raw($x);
1151 while (my $c = next_rev_list_entry($rl)) {
1152 foreach my $re (@re) {
1153 my (@br) = ($c->{m} =~ /$re/g);
1154 next unless @br;
1155 process_merge_msg_matches($grafts,$l_map,$u,$p,$c,@br);
1156 }
1157 }
1158 }
1159
1160 sub read_uuid {
1161 return if $SVN_UUID;
1162 if ($_use_lib) {
1163 my $pool = SVN::Pool->new;
1164 $SVN_UUID = $SVN->get_uuid($pool);
1165 $pool->clear;
1166 } else {
1167 my $info = shift || svn_info('.');
1168 $SVN_UUID = $info->{'Repository UUID'} or
1169 croak "Repository UUID unreadable\n";
1170 }
1171 }
1172
1173 sub quiet_run {
1174 my $pid = fork;
1175 defined $pid or croak $!;
1176 if (!$pid) {
1177 open my $null, '>', '/dev/null' or croak $!;
1178 open STDERR, '>&', $null or croak $!;
1179 open STDOUT, '>&', $null or croak $!;
1180 exec @_ or croak $!;
1181 }
1182 waitpid $pid, 0;
1183 return $?;
1184 }
1185
1186 sub repo_path_split {
1187 my $full_url = shift;
1188 $full_url =~ s#/+$##;
1189
1190 foreach (@repo_path_split_cache) {
1191 if ($full_url =~ s#$_##) {
1192 my $u = $1;
1193 $full_url =~ s#^/+##;
1194 return ($u, $full_url);
1195 }
1196 }
1197
1198 if ($_use_lib) {
1199 my $tmp = libsvn_connect($full_url);
1200 my $url = $tmp->get_repos_root;
1201 $full_url =~ s#^\Q$url\E/*##;
1202 push @repo_path_split_cache, qr/^(\Q$url\E)/;
1203 return ($url, $full_url);
1204 } else {
1205 my ($url, $path) = ($full_url =~ m!^([a-z\+]+://[^/]*)(.*)$!i);
1206 $path =~ s#^/+##;
1207 my @paths = split(m#/+#, $path);
1208 while (quiet_run(qw/svn ls --non-interactive/, $url)) {
1209 my $n = shift @paths || last;
1210 $url .= "/$n";
1211 }
1212 push @repo_path_split_cache, qr/^(\Q$url\E)/;
1213 $path = join('/',@paths);
1214 return ($url, $path);
1215 }
1216 }
1217
1218 sub setup_git_svn {
1219 defined $SVN_URL or croak "SVN repository location required\n";
1220 unless (-d $GIT_DIR) {
1221 croak "GIT_DIR=$GIT_DIR does not exist!\n";
1222 }
1223 mkpath([$GIT_SVN_DIR]);
1224 mkpath(["$GIT_SVN_DIR/info"]);
1225 open my $fh, '>>',$REVDB or croak $!;
1226 close $fh;
1227 s_to_file($SVN_URL,"$GIT_SVN_DIR/info/url");
1228
1229 }
1230
1231 sub assert_svn_wc_clean {
1232 return if $_use_lib;
1233 my ($svn_rev) = @_;
1234 croak "$svn_rev is not an integer!\n" unless ($svn_rev =~ /^\d+$/);
1235 my $lcr = svn_info('.')->{'Last Changed Rev'};
1236 if ($svn_rev != $lcr) {
1237 print STDERR "Checking for copy-tree ... ";
1238 my @diff = grep(/^Index: /,(safe_qx(qw(svn diff),
1239 "-r$lcr:$svn_rev")));
1240 if (@diff) {
1241 croak "Nope! Expected r$svn_rev, got r$lcr\n";
1242 } else {
1243 print STDERR "OK!\n";
1244 }
1245 }
1246 my @status = grep(!/^Performing status on external/,(`svn status`));
1247 @status = grep(!/^\s*$/,@status);
1248 if (scalar @status) {
1249 print STDERR "Tree ($SVN_WC) is not clean:\n";
1250 print STDERR $_ foreach @status;
1251 croak;
1252 }
1253 }
1254
1255 sub get_tree_from_treeish {
1256 my ($treeish) = @_;
1257 croak "Not a sha1: $treeish\n" unless $treeish =~ /^$sha1$/o;
1258 chomp(my $type = `git-cat-file -t $treeish`);
1259 my $expected;
1260 while ($type eq 'tag') {
1261 chomp(($treeish, $type) = `git-cat-file tag $treeish`);
1262 }
1263 if ($type eq 'commit') {
1264 $expected = (grep /^tree /,`git-cat-file commit $treeish`)[0];
1265 ($expected) = ($expected =~ /^tree ($sha1)$/);
1266 die "Unable to get tree from $treeish\n" unless $expected;
1267 } elsif ($type eq 'tree') {
1268 $expected = $treeish;
1269 } else {
1270 die "$treeish is a $type, expected tree, tag or commit\n";
1271 }
1272 return $expected;
1273 }
1274
1275 sub assert_tree {
1276 return if $_use_lib;
1277 my ($treeish) = @_;
1278 my $expected = get_tree_from_treeish($treeish);
1279
1280 my $tmpindex = $GIT_SVN_INDEX.'.assert-tmp';
1281 if (-e $tmpindex) {
1282 unlink $tmpindex or croak $!;
1283 }
1284 my $old_index = set_index($tmpindex);
1285 index_changes(1);
1286 chomp(my $tree = `git-write-tree`);
1287 restore_index($old_index);
1288 if ($tree ne $expected) {
1289 croak "Tree mismatch, Got: $tree, Expected: $expected\n";
1290 }
1291 unlink $tmpindex;
1292 }
1293
1294 sub parse_diff_tree {
1295 my $diff_fh = shift;
1296 local $/ = "\0";
1297 my $state = 'meta';
1298 my @mods;
1299 while (<$diff_fh>) {
1300 chomp $_; # this gets rid of the trailing "\0"
1301 if ($state eq 'meta' && /^:(\d{6})\s(\d{6})\s
1302 $sha1\s($sha1)\s([MTCRAD])\d*$/xo) {
1303 push @mods, { mode_a => $1, mode_b => $2,
1304 sha1_b => $3, chg => $4 };
1305 if ($4 =~ /^(?:C|R)$/) {
1306 $state = 'file_a';
1307 } else {
1308 $state = 'file_b';
1309 }
1310 } elsif ($state eq 'file_a') {
1311 my $x = $mods[$#mods] or croak "Empty array\n";
1312 if ($x->{chg} !~ /^(?:C|R)$/) {
1313 croak "Error parsing $_, $x->{chg}\n";
1314 }
1315 $x->{file_a} = $_;
1316 $state = 'file_b';
1317 } elsif ($state eq 'file_b') {
1318 my $x = $mods[$#mods] or croak "Empty array\n";
1319 if (exists $x->{file_a} && $x->{chg} !~ /^(?:C|R)$/) {
1320 croak "Error parsing $_, $x->{chg}\n";
1321 }
1322 if (!exists $x->{file_a} && $x->{chg} =~ /^(?:C|R)$/) {
1323 croak "Error parsing $_, $x->{chg}\n";
1324 }
1325 $x->{file_b} = $_;
1326 $state = 'meta';
1327 } else {
1328 croak "Error parsing $_\n";
1329 }
1330 }
1331 close $diff_fh or croak $?;
1332
1333 return \@mods;
1334 }
1335
1336 sub svn_check_prop_executable {
1337 my $m = shift;
1338 return if -l $m->{file_b};
1339 if ($m->{mode_b} =~ /755$/) {
1340 chmod((0755 &~ umask),$m->{file_b}) or croak $!;
1341 if ($m->{mode_a} !~ /755$/) {
1342 sys(qw(svn propset svn:executable 1), $m->{file_b});
1343 }
1344 -x $m->{file_b} or croak "$m->{file_b} is not executable!\n";
1345 } elsif ($m->{mode_b} !~ /755$/ && $m->{mode_a} =~ /755$/) {
1346 sys(qw(svn propdel svn:executable), $m->{file_b});
1347 chmod((0644 &~ umask),$m->{file_b}) or croak $!;
1348 -x $m->{file_b} and croak "$m->{file_b} is executable!\n";
1349 }
1350 }
1351
1352 sub svn_ensure_parent_path {
1353 my $dir_b = dirname(shift);
1354 svn_ensure_parent_path($dir_b) if ($dir_b ne File::Spec->curdir);
1355 mkpath([$dir_b]) unless (-d $dir_b);
1356 sys(qw(svn add -N), $dir_b) unless (-d "$dir_b/.svn");
1357 }
1358
1359 sub precommit_check {
1360 my $mods = shift;
1361 my (%rm_file, %rmdir_check, %added_check);
1362
1363 my %o = ( D => 0, R => 1, C => 2, A => 3, M => 3, T => 3 );
1364 foreach my $m (sort { $o{$a->{chg}} <=> $o{$b->{chg}} } @$mods) {
1365 if ($m->{chg} eq 'R') {
1366 if (-d $m->{file_b}) {
1367 err_dir_to_file("$m->{file_a} => $m->{file_b}");
1368 }
1369 # dir/$file => dir/file/$file
1370 my $dirname = dirname($m->{file_b});
1371 while ($dirname ne File::Spec->curdir) {
1372 if ($dirname ne $m->{file_a}) {
1373 $dirname = dirname($dirname);
1374 next;
1375 }
1376 err_file_to_dir("$m->{file_a} => $m->{file_b}");
1377 }
1378 # baz/zzz => baz (baz is a file)
1379 $dirname = dirname($m->{file_a});
1380 while ($dirname ne File::Spec->curdir) {
1381 if ($dirname ne $m->{file_b}) {
1382 $dirname = dirname($dirname);
1383 next;
1384 }
1385 err_dir_to_file("$m->{file_a} => $m->{file_b}");
1386 }
1387 }
1388 if ($m->{chg} =~ /^(D|R)$/) {
1389 my $t = $1 eq 'D' ? 'file_b' : 'file_a';
1390 $rm_file{ $m->{$t} } = 1;
1391 my $dirname = dirname( $m->{$t} );
1392 my $basename = basename( $m->{$t} );
1393 $rmdir_check{$dirname}->{$basename} = 1;
1394 } elsif ($m->{chg} =~ /^(?:A|C)$/) {
1395 if (-d $m->{file_b}) {
1396 err_dir_to_file($m->{file_b});
1397 }
1398 my $dirname = dirname( $m->{file_b} );
1399 my $basename = basename( $m->{file_b} );
1400 $added_check{$dirname}->{$basename} = 1;
1401 while ($dirname ne File::Spec->curdir) {
1402 if ($rm_file{$dirname}) {
1403 err_file_to_dir($m->{file_b});
1404 }
1405 $dirname = dirname $dirname;
1406 }
1407 }
1408 }
1409 return (\%rmdir_check, \%added_check);
1410
1411 sub err_dir_to_file {
1412 my $file = shift;
1413 print STDERR "Node change from directory to file ",
1414 "is not supported by Subversion: ",$file,"\n";
1415 exit 1;
1416 }
1417 sub err_file_to_dir {
1418 my $file = shift;
1419 print STDERR "Node change from file to directory ",
1420 "is not supported by Subversion: ",$file,"\n";
1421 exit 1;
1422 }
1423 }
1424
1425
1426 sub get_diff {
1427 my ($from, $treeish) = @_;
1428 assert_tree($from);
1429 print "diff-tree $from $treeish\n";
1430 my $pid = open my $diff_fh, '-|';
1431 defined $pid or croak $!;
1432 if ($pid == 0) {
1433 my @diff_tree = qw(git-diff-tree -z -r);
1434 if ($_cp_similarity) {
1435 push @diff_tree, "-C$_cp_similarity";
1436 } else {
1437 push @diff_tree, '-C';
1438 }
1439 push @diff_tree, '--find-copies-harder' if $_find_copies_harder;
1440 push @diff_tree, "-l$_l" if defined $_l;
1441 exec(@diff_tree, $from, $treeish) or croak $!;
1442 }
1443 return parse_diff_tree($diff_fh);
1444 }
1445
1446 sub svn_checkout_tree {
1447 my ($from, $treeish) = @_;
1448 my $mods = get_diff($from->{commit}, $treeish);
1449 return $mods unless (scalar @$mods);
1450 my ($rm, $add) = precommit_check($mods);
1451
1452 my %o = ( D => 1, R => 0, C => -1, A => 3, M => 3, T => 3 );
1453 foreach my $m (sort { $o{$a->{chg}} <=> $o{$b->{chg}} } @$mods) {
1454 if ($m->{chg} eq 'C') {
1455 svn_ensure_parent_path( $m->{file_b} );
1456 sys(qw(svn cp), $m->{file_a}, $m->{file_b});
1457 apply_mod_line_blob($m);
1458 svn_check_prop_executable($m);
1459 } elsif ($m->{chg} eq 'D') {
1460 sys(qw(svn rm --force), $m->{file_b});
1461 } elsif ($m->{chg} eq 'R') {
1462 svn_ensure_parent_path( $m->{file_b} );
1463 sys(qw(svn mv --force), $m->{file_a}, $m->{file_b});
1464 apply_mod_line_blob($m);
1465 svn_check_prop_executable($m);
1466 } elsif ($m->{chg} eq 'M') {
1467 apply_mod_line_blob($m);
1468 svn_check_prop_executable($m);
1469 } elsif ($m->{chg} eq 'T') {
1470 sys(qw(svn rm --force),$m->{file_b});
1471 apply_mod_line_blob($m);
1472 sys(qw(svn add), $m->{file_b});
1473 svn_check_prop_executable($m);
1474 } elsif ($m->{chg} eq 'A') {
1475 svn_ensure_parent_path( $m->{file_b} );
1476 apply_mod_line_blob($m);
1477 sys(qw(svn add), $m->{file_b});
1478 svn_check_prop_executable($m);
1479 } else {
1480 croak "Invalid chg: $m->{chg}\n";
1481 }
1482 }
1483
1484 assert_tree($treeish);
1485 if ($_rmdir) { # remove empty directories
1486 handle_rmdir($rm, $add);
1487 }
1488 assert_tree($treeish);
1489 return $mods;
1490 }
1491
1492 sub libsvn_checkout_tree {
1493 my ($from, $treeish, $ed) = @_;
1494 my $mods = get_diff($from, $treeish);
1495 return $mods unless (scalar @$mods);
1496 my %o = ( D => 1, R => 0, C => -1, A => 3, M => 3, T => 3 );
1497 foreach my $m (sort { $o{$a->{chg}} <=> $o{$b->{chg}} } @$mods) {
1498 my $f = $m->{chg};
1499 if (defined $o{$f}) {
1500 $ed->$f($m, $_q);
1501 } else {
1502 croak "Invalid change type: $f\n";
1503 }
1504 }
1505 $ed->rmdirs($_q) if $_rmdir;
1506 return $mods;
1507 }
1508
1509 # svn ls doesn't work with respect to the current working tree, but what's
1510 # in the repository. There's not even an option for it... *sigh*
1511 # (added files don't show up and removed files remain in the ls listing)
1512 sub svn_ls_current {
1513 my ($dir, $rm, $add) = @_;
1514 chomp(my @ls = safe_qx('svn','ls',$dir));
1515 my @ret = ();
1516 foreach (@ls) {
1517 s#/$##; # trailing slashes are evil
1518 push @ret, $_ unless $rm->{$dir}->{$_};
1519 }
1520 if (exists $add->{$dir}) {
1521 push @ret, keys %{$add->{$dir}};
1522 }
1523 return \@ret;
1524 }
1525
1526 sub handle_rmdir {
1527 my ($rm, $add) = @_;
1528
1529 foreach my $dir (sort {length $b <=> length $a} keys %$rm) {
1530 my $ls = svn_ls_current($dir, $rm, $add);
1531 next if (scalar @$ls);
1532 sys(qw(svn rm --force),$dir);
1533
1534 my $dn = dirname $dir;
1535 $rm->{ $dn }->{ basename $dir } = 1;
1536 $ls = svn_ls_current($dn, $rm, $add);
1537 while (scalar @$ls == 0 && $dn ne File::Spec->curdir) {
1538 sys(qw(svn rm --force),$dn);
1539 $dir = basename $dn;
1540 $dn = dirname $dn;
1541 $rm->{ $dn }->{ $dir } = 1;
1542 $ls = svn_ls_current($dn, $rm, $add);
1543 }
1544 }
1545 }
1546
1547 sub get_commit_message {
1548 my ($commit, $commit_msg) = (@_);
1549 my %log_msg = ( msg => '' );
1550 open my $msg, '>', $commit_msg or croak $!;
1551
1552 chomp(my $type = `git-cat-file -t $commit`);
1553 if ($type eq 'commit' || $type eq 'tag') {
1554 my $pid = open my $msg_fh, '-|';
1555 defined $pid or croak $!;
1556
1557 if ($pid == 0) {
1558 exec('git-cat-file', $type, $commit) or croak $!;
1559 }
1560 my $in_msg = 0;
1561 while (<$msg_fh>) {
1562 if (!$in_msg) {
1563 $in_msg = 1 if (/^\s*$/);
1564 } elsif (/^git-svn-id: /) {
1565 # skip this, we regenerate the correct one
1566 # on re-fetch anyways
1567 } else {
1568 print $msg $_ or croak $!;
1569 }
1570 }
1571 close $msg_fh or croak $?;
1572 }
1573 close $msg or croak $!;
1574
1575 if ($_edit || ($type eq 'tree')) {
1576 my $editor = $ENV{VISUAL} || $ENV{EDITOR} || 'vi';
1577 system($editor, $commit_msg);
1578 }
1579
1580 # file_to_s removes all trailing newlines, so just use chomp() here:
1581 open $msg, '<', $commit_msg or croak $!;
1582 { local $/; chomp($log_msg{msg} = <$msg>); }
1583 close $msg or croak $!;
1584
1585 return \%log_msg;
1586 }
1587
1588 sub set_svn_commit_env {
1589 if (defined $LC_ALL) {
1590 $ENV{LC_ALL} = $LC_ALL;
1591 } else {
1592 delete $ENV{LC_ALL};
1593 }
1594 }
1595
1596 sub svn_commit_tree {
1597 my ($last, $commit) = @_;
1598 my $commit_msg = "$GIT_SVN_DIR/.svn-commit.tmp.$$";
1599 my $log_msg = get_commit_message($commit, $commit_msg);
1600 my ($oneline) = ($log_msg->{msg} =~ /([^\n\r]+)/);
1601 print "Committing $commit: $oneline\n";
1602
1603 set_svn_commit_env();
1604 my @ci_output = safe_qx(qw(svn commit -F),$commit_msg);
1605 $ENV{LC_ALL} = 'C';
1606 unlink $commit_msg;
1607 my ($committed) = ($ci_output[$#ci_output] =~ /(\d+)/);
1608 if (!defined $committed) {
1609 my $out = join("\n",@ci_output);
1610 print STDERR "W: Trouble parsing \`svn commit' output:\n\n",
1611 $out, "\n\nAssuming English locale...";
1612 ($committed) = ($out =~ /^Committed revision \d+\./sm);
1613 defined $committed or die " FAILED!\n",
1614 "Commit output failed to parse committed revision!\n",
1615 print STDERR " OK\n";
1616 }
1617
1618 my @svn_up = qw(svn up);
1619 push @svn_up, '--ignore-externals' unless $_no_ignore_ext;
1620 if ($_optimize_commits && ($committed == ($last->{revision} + 1))) {
1621 push @svn_up, "-r$committed";
1622 sys(@svn_up);
1623 my $info = svn_info('.');
1624 my $date = $info->{'Last Changed Date'} or die "Missing date\n";
1625 if ($info->{'Last Changed Rev'} != $committed) {
1626 croak "$info->{'Last Changed Rev'} != $committed\n"
1627 }
1628 my ($Y,$m,$d,$H,$M,$S,$tz) = ($date =~
1629 /(\d{4})\-(\d\d)\-(\d\d)\s
1630 (\d\d)\:(\d\d)\:(\d\d)\s([\-\+]\d+)/x)
1631 or croak "Failed to parse date: $date\n";
1632 $log_msg->{date} = "$tz $Y-$m-$d $H:$M:$S";
1633 $log_msg->{author} = $info->{'Last Changed Author'};
1634 $log_msg->{revision} = $committed;
1635 $log_msg->{msg} .= "\n";
1636 $log_msg->{parents} = [ $last->{commit} ];
1637 $log_msg->{commit} = git_commit($log_msg, $commit);
1638 return $log_msg;
1639 }
1640 # resync immediately
1641 push @svn_up, "-r$last->{revision}";
1642 sys(@svn_up);
1643 return fetch("$committed=$commit");
1644 }
1645
1646 sub rev_list_raw {
1647 my (@args) = @_;
1648 my $pid = open my $fh, '-|';
1649 defined $pid or croak $!;
1650 if (!$pid) {
1651 exec(qw/git-rev-list --pretty=raw/, @args) or croak $!;
1652 }
1653 return { fh => $fh, t => { } };
1654 }
1655
1656 sub next_rev_list_entry {
1657 my $rl = shift;
1658 my $fh = $rl->{fh};
1659 my $x = $rl->{t};
1660 while (<$fh>) {
1661 if (/^commit ($sha1)$/o) {
1662 if ($x->{c}) {
1663 $rl->{t} = { c => $1 };
1664 return $x;
1665 } else {
1666 $x->{c} = $1;
1667 }
1668 } elsif (/^parent ($sha1)$/o) {
1669 $x->{p}->{$1} = 1;
1670 } elsif (s/^ //) {
1671 $x->{m} ||= '';
1672 $x->{m} .= $_;
1673 }
1674 }
1675 return ($x != $rl->{t}) ? $x : undef;
1676 }
1677
1678 # read the entire log into a temporary file (which is removed ASAP)
1679 # and store the file handle + parser state
1680 sub svn_log_raw {
1681 my (@log_args) = @_;
1682 my $log_fh = IO::File->new_tmpfile or croak $!;
1683 my $pid = fork;
1684 defined $pid or croak $!;
1685 if (!$pid) {
1686 open STDOUT, '>&', $log_fh or croak $!;
1687 exec (qw(svn log), @log_args) or croak $!
1688 }
1689 waitpid $pid, 0;
1690 croak $? if $?;
1691 seek $log_fh, 0, 0 or croak $!;
1692 return { state => 'sep', fh => $log_fh };
1693 }
1694
1695 sub next_log_entry {
1696 my $log = shift; # retval of svn_log_raw()
1697 my $ret = undef;
1698 my $fh = $log->{fh};
1699
1700 while (<$fh>) {
1701 chomp;
1702 if (/^\-{72}$/) {
1703 if ($log->{state} eq 'msg') {
1704 if ($ret->{lines}) {
1705 $ret->{msg} .= $_."\n";
1706 unless(--$ret->{lines}) {
1707 $log->{state} = 'sep';
1708 }
1709 } else {
1710 croak "Log parse error at: $_\n",
1711 $ret->{revision},
1712 "\n";
1713 }
1714 next;
1715 }
1716 if ($log->{state} ne 'sep') {
1717 croak "Log parse error at: $_\n",
1718 "state: $log->{state}\n",
1719 $ret->{revision},
1720 "\n";
1721 }
1722 $log->{state} = 'rev';
1723
1724 # if we have an empty log message, put something there:
1725 if ($ret) {
1726 $ret->{msg} ||= "\n";
1727 delete $ret->{lines};
1728 return $ret;
1729 }
1730 next;
1731 }
1732 if ($log->{state} eq 'rev' && s/^r(\d+)\s*\|\s*//) {
1733 my $rev = $1;
1734 my ($author, $date, $lines) = split(/\s*\|\s*/, $_, 3);
1735 ($lines) = ($lines =~ /(\d+)/);
1736 my ($Y,$m,$d,$H,$M,$S,$tz) = ($date =~
1737 /(\d{4})\-(\d\d)\-(\d\d)\s
1738 (\d\d)\:(\d\d)\:(\d\d)\s([\-\+]\d+)/x)
1739 or croak "Failed to parse date: $date\n";
1740 $ret = { revision => $rev,
1741 date => "$tz $Y-$m-$d $H:$M:$S",
1742 author => $author,
1743 lines => $lines,
1744 msg => '' };
1745 if (defined $_authors && ! defined $users{$author}) {
1746 die "Author: $author not defined in ",
1747 "$_authors file\n";
1748 }
1749 $log->{state} = 'msg_start';
1750 next;
1751 }
1752 # skip the first blank line of the message:
1753 if ($log->{state} eq 'msg_start' && /^$/) {
1754 $log->{state} = 'msg';
1755 } elsif ($log->{state} eq 'msg') {
1756 if ($ret->{lines}) {
1757 $ret->{msg} .= $_."\n";
1758 unless (--$ret->{lines}) {
1759 $log->{state} = 'sep';
1760 }
1761 } else {
1762 croak "Log parse error at: $_\n",
1763 $ret->{revision},"\n";
1764 }
1765 }
1766 }
1767 return $ret;
1768 }
1769
1770 sub svn_info {
1771 my $url = shift || $SVN_URL;
1772
1773 my $pid = open my $info_fh, '-|';
1774 defined $pid or croak $!;
1775
1776 if ($pid == 0) {
1777 exec(qw(svn info),$url) or croak $!;
1778 }
1779
1780 my $ret = {};
1781 # only single-lines seem to exist in svn info output
1782 while (<$info_fh>) {
1783 chomp $_;
1784 if (m#^([^:]+)\s*:\s*(\S.*)$#) {
1785 $ret->{$1} = $2;
1786 push @{$ret->{-order}}, $1;
1787 }
1788 }
1789 close $info_fh or croak $?;
1790 return $ret;
1791 }
1792
1793 sub sys { system(@_) == 0 or croak $? }
1794
1795 sub do_update_index {
1796 my ($z_cmd, $cmd, $no_text_base) = @_;
1797
1798 my $z = open my $p, '-|';
1799 defined $z or croak $!;
1800 unless ($z) { exec @$z_cmd or croak $! }
1801
1802 my $pid = open my $ui, '|-';
1803 defined $pid or croak $!;
1804 unless ($pid) {
1805 exec('git-update-index',"--$cmd",'-z','--stdin') or croak $!;
1806 }
1807 local $/ = "\0";
1808 while (my $x = <$p>) {
1809 chomp $x;
1810 if (!$no_text_base && lstat $x && ! -l _ &&
1811 svn_propget_base('svn:keywords', $x)) {
1812 my $mode = -x _ ? 0755 : 0644;
1813 my ($v,$d,$f) = File::Spec->splitpath($x);
1814 my $tb = File::Spec->catfile($d, '.svn', 'tmp',
1815 'text-base',"$f.svn-base");
1816 $tb =~ s#^/##;
1817 unless (-f $tb) {
1818 $tb = File::Spec->catfile($d, '.svn',
1819 'text-base',"$f.svn-base");
1820 $tb =~ s#^/##;
1821 }
1822 my @s = stat($x);
1823 unlink $x or croak $!;
1824 copy($tb, $x);
1825 chmod(($mode &~ umask), $x) or croak $!;
1826 utime $s[8], $s[9], $x;
1827 }
1828 print $ui $x,"\0";
1829 }
1830 close $ui or croak $?;
1831 }
1832
1833 sub index_changes {
1834 return if $_use_lib;
1835
1836 if (!-f "$GIT_SVN_DIR/info/exclude") {
1837 open my $fd, '>>', "$GIT_SVN_DIR/info/exclude" or croak $!;
1838 print $fd '.svn',"\n";
1839 close $fd or croak $!;
1840 }
1841 my $no_text_base = shift;
1842 do_update_index([qw/git-diff-files --name-only -z/],
1843 'remove',
1844 $no_text_base);
1845 do_update_index([qw/git-ls-files -z --others/,
1846 "--exclude-from=$GIT_SVN_DIR/info/exclude"],
1847 'add',
1848 $no_text_base);
1849 }
1850
1851 sub s_to_file {
1852 my ($str, $file, $mode) = @_;
1853 open my $fd,'>',$file or croak $!;
1854 print $fd $str,"\n" or croak $!;
1855 close $fd or croak $!;
1856 chmod ($mode &~ umask, $file) if (defined $mode);
1857 }
1858
1859 sub file_to_s {
1860 my $file = shift;
1861 open my $fd,'<',$file or croak "$!: file: $file\n";
1862 local $/;
1863 my $ret = <$fd>;
1864 close $fd or croak $!;
1865 $ret =~ s/\s*$//s;
1866 return $ret;
1867 }
1868
1869 sub assert_revision_unknown {
1870 my $r = shift;
1871 if (my $c = revdb_get($REVDB, $r)) {
1872 croak "$r = $c already exists! Why are we refetching it?";
1873 }
1874 }
1875
1876 sub trees_eq {
1877 my ($x, $y) = @_;
1878 my @x = safe_qx('git-cat-file','commit',$x);
1879 my @y = safe_qx('git-cat-file','commit',$y);
1880 if (($y[0] ne $x[0]) || $x[0] !~ /^tree $sha1\n$/
1881 || $y[0] !~ /^tree $sha1\n$/) {
1882 print STDERR "Trees not equal: $y[0] != $x[0]\n";
1883 return 0
1884 }
1885 return 1;
1886 }
1887
1888 sub git_commit {
1889 my ($log_msg, @parents) = @_;
1890 assert_revision_unknown($log_msg->{revision});
1891 map_tree_joins() if (@_branch_from && !%tree_map);
1892
1893 my (@tmp_parents, @exec_parents, %seen_parent);
1894 if (my $lparents = $log_msg->{parents}) {
1895 @tmp_parents = @$lparents
1896 }
1897 # commit parents can be conditionally bound to a particular
1898 # svn revision via: "svn_revno=commit_sha1", filter them out here:
1899 foreach my $p (@parents) {
1900 next unless defined $p;
1901 if ($p =~ /^(\d+)=($sha1_short)$/o) {
1902 if ($1 == $log_msg->{revision}) {
1903 push @tmp_parents, $2;
1904 }
1905 } else {
1906 push @tmp_parents, $p if $p =~ /$sha1_short/o;
1907 }
1908 }
1909 my $tree = $log_msg->{tree};
1910 if (!defined $tree) {
1911 my $index = set_index($GIT_SVN_INDEX);
1912 index_changes();
1913 chomp($tree = `git-write-tree`);
1914 croak $? if $?;
1915 restore_index($index);
1916 }
1917
1918 # just in case we clobber the existing ref, we still want that ref
1919 # as our parent:
1920 if (my $cur = eval { file_to_s("$GIT_DIR/refs/remotes/$GIT_SVN") }) {
1921 push @tmp_parents, $cur;
1922 }
1923
1924 if (exists $tree_map{$tree}) {
1925 foreach my $p (@{$tree_map{$tree}}) {
1926 my $skip;
1927 foreach (@tmp_parents) {
1928 # see if a common parent is found
1929 my $mb = eval {
1930 safe_qx('git-merge-base', $_, $p)
1931 };
1932 next if ($@ || $?);
1933 $skip = 1;
1934 last;
1935 }
1936 next if $skip;
1937 my ($url_p, $r_p, $uuid_p) = cmt_metadata($p);
1938 next if (($SVN_UUID eq $uuid_p) &&
1939 ($log_msg->{revision} > $r_p));
1940 next if (defined $url_p && defined $SVN_URL &&
1941 ($SVN_UUID eq $uuid_p) &&
1942 ($url_p eq $SVN_URL));
1943 push @tmp_parents, $p;
1944 }
1945 }
1946 foreach (@tmp_parents) {
1947 next if $seen_parent{$_};
1948 $seen_parent{$_} = 1;
1949 push @exec_parents, $_;
1950 # MAXPARENT is defined to 16 in commit-tree.c:
1951 last if @exec_parents > 16;
1952 }
1953
1954 set_commit_env($log_msg);
1955 my @exec = ('git-commit-tree', $tree);
1956 push @exec, '-p', $_ foreach @exec_parents;
1957 defined(my $pid = open3(my $msg_fh, my $out_fh, '>&STDERR', @exec))
1958 or croak $!;
1959 print $msg_fh $log_msg->{msg} or croak $!;
1960 unless ($_no_metadata) {
1961 print $msg_fh "\ngit-svn-id: $SVN_URL\@$log_msg->{revision}",
1962 " $SVN_UUID\n" or croak $!;
1963 }
1964 $msg_fh->flush == 0 or croak $!;
1965 close $msg_fh or croak $!;
1966 chomp(my $commit = do { local $/; <$out_fh> });
1967 close $out_fh or croak $!;
1968 waitpid $pid, 0;
1969 croak $? if $?;
1970 if ($commit !~ /^$sha1$/o) {
1971 die "Failed to commit, invalid sha1: $commit\n";
1972 }
1973 sys('git-update-ref',"refs/remotes/$GIT_SVN",$commit);
1974 revdb_set($REVDB, $log_msg->{revision}, $commit);
1975
1976 # this output is read via pipe, do not change:
1977 print "r$log_msg->{revision} = $commit\n";
1978 check_repack();
1979 return $commit;
1980 }
1981
1982 sub check_repack {
1983 if ($_repack && (--$_repack_nr == 0)) {
1984 $_repack_nr = $_repack;
1985 sys("git repack $_repack_flags");
1986 }
1987 }
1988
1989 sub set_commit_env {
1990 my ($log_msg) = @_;
1991 my $author = $log_msg->{author};
1992 if (!defined $author || length $author == 0) {
1993 $author = '(no author)';
1994 }
1995 my ($name,$email) = defined $users{$author} ? @{$users{$author}}
1996 : ($author,"$author\@$SVN_UUID");
1997 $ENV{GIT_AUTHOR_NAME} = $ENV{GIT_COMMITTER_NAME} = $name;
1998 $ENV{GIT_AUTHOR_EMAIL} = $ENV{GIT_COMMITTER_EMAIL} = $email;
1999 $ENV{GIT_AUTHOR_DATE} = $ENV{GIT_COMMITTER_DATE} = $log_msg->{date};
2000 }
2001
2002 sub apply_mod_line_blob {
2003 my $m = shift;
2004 if ($m->{mode_b} =~ /^120/) {
2005 blob_to_symlink($m->{sha1_b}, $m->{file_b});
2006 } else {
2007 blob_to_file($m->{sha1_b}, $m->{file_b});
2008 }
2009 }
2010
2011 sub blob_to_symlink {
2012 my ($blob, $link) = @_;
2013 defined $link or croak "\$link not defined!\n";
2014 croak "Not a sha1: $blob\n" unless $blob =~ /^$sha1$/o;
2015 if (-l $link || -f _) {
2016 unlink $link or croak $!;
2017 }
2018
2019 my $dest = `git-cat-file blob $blob`; # no newline, so no chomp
2020 symlink $dest, $link or croak $!;
2021 }
2022
2023 sub blob_to_file {
2024 my ($blob, $file) = @_;
2025 defined $file or croak "\$file not defined!\n";
2026 croak "Not a sha1: $blob\n" unless $blob =~ /^$sha1$/o;
2027 if (-l $file || -f _) {
2028 unlink $file or croak $!;
2029 }
2030
2031 open my $blob_fh, '>', $file or croak "$!: $file\n";
2032 my $pid = fork;
2033 defined $pid or croak $!;
2034
2035 if ($pid == 0) {
2036 open STDOUT, '>&', $blob_fh or croak $!;
2037 exec('git-cat-file','blob',$blob) or croak $!;
2038 }
2039 waitpid $pid, 0;
2040 croak $? if $?;
2041
2042 close $blob_fh or croak $!;
2043 }
2044
2045 sub safe_qx {
2046 my $pid = open my $child, '-|';
2047 defined $pid or croak $!;
2048 if ($pid == 0) {
2049 exec(@_) or croak $!;
2050 }
2051 my @ret = (<$child>);
2052 close $child or croak $?;
2053 die $? if $?; # just in case close didn't error out
2054 return wantarray ? @ret : join('',@ret);
2055 }
2056
2057 sub svn_compat_check {
2058 if ($_follow_parent) {
2059 print STDERR 'E: --follow-parent functionality is only ',
2060 "available when SVN libraries are used\n";
2061 exit 1;
2062 }
2063 my @co_help = safe_qx(qw(svn co -h));
2064 unless (grep /ignore-externals/,@co_help) {
2065 print STDERR "W: Installed svn version does not support ",
2066 "--ignore-externals\n";
2067 $_no_ignore_ext = 1;
2068 }
2069 if (grep /usage: checkout URL\[\@REV\]/,@co_help) {
2070 $_svn_co_url_revs = 1;
2071 }
2072 if (grep /\[TARGET\[\@REV\]\.\.\.\]/, `svn propget -h`) {
2073 $_svn_pg_peg_revs = 1;
2074 }
2075
2076 # I really, really hope nobody hits this...
2077 unless (grep /stop-on-copy/, (safe_qx(qw(svn log -h)))) {
2078 print STDERR <<'';
2079 W: The installed svn version does not support the --stop-on-copy flag in
2080 the log command.
2081 Lets hope the directory you're tracking is not a branch or tag
2082 and was never moved within the repository...
2083
2084 $_no_stop_copy = 1;
2085 }
2086 }
2087
2088 # *sigh*, new versions of svn won't honor -r<rev> without URL@<rev>,
2089 # (and they won't honor URL@<rev> without -r<rev>, too!)
2090 sub svn_cmd_checkout {
2091 my ($url, $rev, $dir) = @_;
2092 my @cmd = ('svn','co', "-r$rev");
2093 push @cmd, '--ignore-externals' unless $_no_ignore_ext;
2094 $url .= "\@$rev" if $_svn_co_url_revs;
2095 sys(@cmd, $url, $dir);
2096 }
2097
2098 sub check_upgrade_needed {
2099 if (!-r $REVDB) {
2100 -d $GIT_SVN_DIR or mkpath([$GIT_SVN_DIR]);
2101 open my $fh, '>>',$REVDB or croak $!;
2102 close $fh;
2103 }
2104 my $old = eval {
2105 my $pid = open my $child, '-|';
2106 defined $pid or croak $!;
2107 if ($pid == 0) {
2108 close STDERR;
2109 exec('git-rev-parse',"$GIT_SVN-HEAD") or croak $!;
2110 }
2111 my @ret = (<$child>);
2112 close $child or croak $?;
2113 die $? if $?; # just in case close didn't error out
2114 return wantarray ? @ret : join('',@ret);
2115 };
2116 return unless $old;
2117 my $head = eval { safe_qx('git-rev-parse',"refs/remotes/$GIT_SVN") };
2118 if ($@ || !$head) {
2119 print STDERR "Please run: $0 rebuild --upgrade\n";
2120 exit 1;
2121 }
2122 }
2123
2124 # fills %tree_map with a reverse mapping of trees to commits. Useful
2125 # for finding parents to commit on.
2126 sub map_tree_joins {
2127 my %seen;
2128 foreach my $br (@_branch_from) {
2129 my $pid = open my $pipe, '-|';
2130 defined $pid or croak $!;
2131 if ($pid == 0) {
2132 exec(qw(git-rev-list --topo-order --pretty=raw), $br)
2133 or croak $!;
2134 }
2135 while (<$pipe>) {
2136 if (/^commit ($sha1)$/o) {
2137 my $commit = $1;
2138
2139 # if we've seen a commit,
2140 # we've seen its parents
2141 last if $seen{$commit};
2142 my ($tree) = (<$pipe> =~ /^tree ($sha1)$/o);
2143 unless (defined $tree) {
2144 die "Failed to parse commit $commit\n";
2145 }
2146 push @{$tree_map{$tree}}, $commit;
2147 $seen{$commit} = 1;
2148 }
2149 }
2150 close $pipe; # we could be breaking the pipe early
2151 }
2152 }
2153
2154 sub load_all_refs {
2155 if (@_branch_from) {
2156 print STDERR '--branch|-b parameters are ignored when ',
2157 "--branch-all-refs|-B is passed\n";
2158 }
2159
2160 # don't worry about rev-list on non-commit objects/tags,
2161 # it shouldn't blow up if a ref is a blob or tree...
2162 chomp(@_branch_from = `git-rev-parse --symbolic --all`);
2163 }
2164
2165 # '<svn username> = real-name <email address>' mapping based on git-svnimport:
2166 sub load_authors {
2167 open my $authors, '<', $_authors or die "Can't open $_authors $!\n";
2168 while (<$authors>) {
2169 chomp;
2170 next unless /^(\S+?)\s*=\s*(.+?)\s*<(.+)>\s*$/;
2171 my ($user, $name, $email) = ($1, $2, $3);
2172 $users{$user} = [$name, $email];
2173 }
2174 close $authors or croak $!;
2175 }
2176
2177 sub rload_authors {
2178 open my $authors, '<', $_authors or die "Can't open $_authors $!\n";
2179 while (<$authors>) {
2180 chomp;
2181 next unless /^(\S+?)\s*=\s*(.+?)\s*<(.+)>\s*$/;
2182 my ($user, $name, $email) = ($1, $2, $3);
2183 $rusers{"$name <$email>"} = $user;
2184 }
2185 close $authors or croak $!;
2186 }
2187
2188 sub svn_propget_base {
2189 my ($p, $f) = @_;
2190 $f .= '@BASE' if $_svn_pg_peg_revs;
2191 return safe_qx(qw/svn propget/, $p, $f);
2192 }
2193
2194 sub git_svn_each {
2195 my $sub = shift;
2196 foreach (`git-rev-parse --symbolic --all`) {
2197 next unless s#^refs/remotes/##;
2198 chomp $_;
2199 next unless -f "$GIT_DIR/svn/$_/info/url";
2200 &$sub($_);
2201 }
2202 }
2203
2204 sub migrate_revdb {
2205 git_svn_each(sub {
2206 my $id = shift;
2207 defined(my $pid = fork) or croak $!;
2208 if (!$pid) {
2209 $GIT_SVN = $ENV{GIT_SVN_ID} = $id;
2210 init_vars();
2211 exit 0 if -r $REVDB;
2212 print "Upgrading svn => git mapping...\n";
2213 -d $GIT_SVN_DIR or mkpath([$GIT_SVN_DIR]);
2214 open my $fh, '>>',$REVDB or croak $!;
2215 close $fh;
2216 rebuild();
2217 print "Done upgrading. You may now delete the ",
2218 "deprecated $GIT_SVN_DIR/revs directory\n";
2219 exit 0;
2220 }
2221 waitpid $pid, 0;
2222 croak $? if $?;
2223 });
2224 }
2225
2226 sub migration_check {
2227 migrate_revdb() unless (-e $REVDB);
2228 return if (-d "$GIT_DIR/svn" || !-d $GIT_DIR);
2229 print "Upgrading repository...\n";
2230 unless (-d "$GIT_DIR/svn") {
2231 mkdir "$GIT_DIR/svn" or croak $!;
2232 }
2233 print "Data from a previous version of git-svn exists, but\n\t",
2234 "$GIT_SVN_DIR\n\t(required for this version ",
2235 "($VERSION) of git-svn) does not.\n";
2236
2237 foreach my $x (`git-rev-parse --symbolic --all`) {
2238 next unless $x =~ s#^refs/remotes/##;
2239 chomp $x;
2240 next unless -f "$GIT_DIR/$x/info/url";
2241 my $u = eval { file_to_s("$GIT_DIR/$x/info/url") };
2242 next unless $u;
2243 my $dn = dirname("$GIT_DIR/svn/$x");
2244 mkpath([$dn]) unless -d $dn;
2245 rename "$GIT_DIR/$x", "$GIT_DIR/svn/$x" or croak "$!: $x";
2246 }
2247 migrate_revdb() if (-d $GIT_SVN_DIR && !-w $REVDB);
2248 print "Done upgrading.\n";
2249 }
2250
2251 sub find_rev_before {
2252 my ($r, $id, $eq_ok) = @_;
2253 my $f = "$GIT_DIR/svn/$id/.rev_db";
2254 return (undef,undef) unless -r $f;
2255 --$r unless $eq_ok;
2256 while ($r > 0) {
2257 if (my $c = revdb_get($f, $r)) {
2258 return ($r, $c);
2259 }
2260 --$r;
2261 }
2262 return (undef, undef);
2263 }
2264
2265 sub init_vars {
2266 $GIT_SVN ||= $ENV{GIT_SVN_ID} || 'git-svn';
2267 $GIT_SVN_DIR = "$GIT_DIR/svn/$GIT_SVN";
2268 $REVDB = "$GIT_SVN_DIR/.rev_db";
2269 $GIT_SVN_INDEX = "$GIT_SVN_DIR/index";
2270 $SVN_URL = undef;
2271 $SVN_WC = "$GIT_SVN_DIR/tree";
2272 %tree_map = ();
2273 }
2274
2275 # convert GetOpt::Long specs for use by git-repo-config
2276 sub read_repo_config {
2277 return unless -d $GIT_DIR;
2278 my $opts = shift;
2279 foreach my $o (keys %$opts) {
2280 my $v = $opts->{$o};
2281 my ($key) = ($o =~ /^([a-z\-]+)/);
2282 $key =~ s/-//g;
2283 my $arg = 'git-repo-config';
2284 $arg .= ' --int' if ($o =~ /[:=]i$/);
2285 $arg .= ' --bool' if ($o !~ /[:=][sfi]$/);
2286 if (ref $v eq 'ARRAY') {
2287 chomp(my @tmp = `$arg --get-all svn.$key`);
2288 @$v = @tmp if @tmp;
2289 } else {
2290 chomp(my $tmp = `$arg --get svn.$key`);
2291 if ($tmp && !($arg =~ / --bool / && $tmp eq 'false')) {
2292 $$v = $tmp;
2293 }
2294 }
2295 }
2296 }
2297
2298 sub set_default_vals {
2299 if (defined $_repack) {
2300 $_repack = 1000 if ($_repack <= 0);
2301 $_repack_nr = $_repack;
2302 $_repack_flags ||= '-d';
2303 }
2304 }
2305
2306 sub read_grafts {
2307 my $gr_file = shift;
2308 my ($grafts, $comments) = ({}, {});
2309 if (open my $fh, '<', $gr_file) {
2310 my @tmp;
2311 while (<$fh>) {
2312 if (/^($sha1)\s+/) {
2313 my $c = $1;
2314 if (@tmp) {
2315 @{$comments->{$c}} = @tmp;
2316 @tmp = ();
2317 }
2318 foreach my $p (split /\s+/, $_) {
2319 $grafts->{$c}->{$p} = 1;
2320 }
2321 } else {
2322 push @tmp, $_;
2323 }
2324 }
2325 close $fh or croak $!;
2326 @{$comments->{'END'}} = @tmp if @tmp;
2327 }
2328 return ($grafts, $comments);
2329 }
2330
2331 sub write_grafts {
2332 my ($grafts, $comments, $gr_file) = @_;
2333
2334 open my $fh, '>', $gr_file or croak $!;
2335 foreach my $c (sort keys %$grafts) {
2336 if ($comments->{$c}) {
2337 print $fh $_ foreach @{$comments->{$c}};
2338 }
2339 my $p = $grafts->{$c};
2340 my %x; # real parents
2341 delete $p->{$c}; # commits are not self-reproducing...
2342 my $pid = open my $ch, '-|';
2343 defined $pid or croak $!;
2344 if (!$pid) {
2345 exec(qw/git-cat-file commit/, $c) or croak $!;
2346 }
2347 while (<$ch>) {
2348 if (/^parent ($sha1)/) {
2349 $x{$1} = $p->{$1} = 1;
2350 } else {
2351 last unless /^\S/;
2352 }
2353 }
2354 close $ch; # breaking the pipe
2355
2356 # if real parents are the only ones in the grafts, drop it
2357 next if join(' ',sort keys %$p) eq join(' ',sort keys %x);
2358
2359 my (@ip, @jp, $mb);
2360 my %del = %x;
2361 @ip = @jp = keys %$p;
2362 foreach my $i (@ip) {
2363 next if $del{$i} || $p->{$i} == 2;
2364 foreach my $j (@jp) {
2365 next if $i eq $j || $del{$j} || $p->{$j} == 2;
2366 $mb = eval { safe_qx('git-merge-base',$i,$j) };
2367 next unless $mb;
2368 chomp $mb;
2369 next if $x{$mb};
2370 if ($mb eq $j) {
2371 delete $p->{$i};
2372 $del{$i} = 1;
2373 } elsif ($mb eq $i) {
2374 delete $p->{$j};
2375 $del{$j} = 1;
2376 }
2377 }
2378 }
2379
2380 # if real parents are the only ones in the grafts, drop it
2381 next if join(' ',sort keys %$p) eq join(' ',sort keys %x);
2382
2383 print $fh $c, ' ', join(' ', sort keys %$p),"\n";
2384 }
2385 if ($comments->{'END'}) {
2386 print $fh $_ foreach @{$comments->{'END'}};
2387 }
2388 close $fh or croak $!;
2389 }
2390
2391 sub read_url_paths_all {
2392 my ($l_map, $pfx, $p) = @_;
2393 my @dir;
2394 foreach (<$p/*>) {
2395 if (-r "$_/info/url") {
2396 $pfx .= '/' if $pfx && $pfx !~ m!/$!;
2397 my $id = $pfx . basename $_;
2398 my $url = file_to_s("$_/info/url");
2399 my ($u, $p) = repo_path_split($url);
2400 $l_map->{$u}->{$p} = $id;
2401 } elsif (-d $_) {
2402 push @dir, $_;
2403 }
2404 }
2405 foreach (@dir) {
2406 my $x = $_;
2407 $x =~ s!^\Q$GIT_DIR\E/svn/!!o;
2408 read_url_paths_all($l_map, $x, $_);
2409 }
2410 }
2411
2412 # this one only gets ids that have been imported, not new ones
2413 sub read_url_paths {
2414 my $l_map = {};
2415 git_svn_each(sub { my $x = shift;
2416 my $url = file_to_s("$GIT_DIR/svn/$x/info/url");
2417 my ($u, $p) = repo_path_split($url);
2418 $l_map->{$u}->{$p} = $x;
2419 });
2420 return $l_map;
2421 }
2422
2423 sub extract_metadata {
2424 my $id = shift or return (undef, undef, undef);
2425 my ($url, $rev, $uuid) = ($id =~ /^git-svn-id:\s(\S+?)\@(\d+)
2426 \s([a-f\d\-]+)$/x);
2427 if (!$rev || !$uuid || !$url) {
2428 # some of the original repositories I made had
2429 # identifiers like this:
2430 ($rev, $uuid) = ($id =~/^git-svn-id:\s(\d+)\@([a-f\d\-]+)/);
2431 }
2432 return ($url, $rev, $uuid);
2433 }
2434
2435 sub cmt_metadata {
2436 return extract_metadata((grep(/^git-svn-id: /,
2437 safe_qx(qw/git-cat-file commit/, shift)))[-1]);
2438 }
2439
2440 sub get_commit_time {
2441 my $cmt = shift;
2442 defined(my $pid = open my $fh, '-|') or croak $!;
2443 if (!$pid) {
2444 exec qw/git-rev-list --pretty=raw -n1/, $cmt or croak $!;
2445 }
2446 while (<$fh>) {
2447 /^committer\s(?:.+) (\d+) ([\-\+]?\d+)$/ or next;
2448 my ($s, $tz) = ($1, $2);
2449 if ($tz =~ s/^\+//) {
2450 $s += tz_to_s_offset($tz);
2451 } elsif ($tz =~ s/^\-//) {
2452 $s -= tz_to_s_offset($tz);
2453 }
2454 close $fh;
2455 return $s;
2456 }
2457 die "Can't get commit time for commit: $cmt\n";
2458 }
2459
2460 sub tz_to_s_offset {
2461 my ($tz) = @_;
2462 $tz =~ s/(\d\d)$//;
2463 return ($1 * 60) + ($tz * 3600);
2464 }
2465
2466 sub setup_pager { # translated to Perl from pager.c
2467 return unless (-t *STDOUT);
2468 my $pager = $ENV{PAGER};
2469 if (!defined $pager) {
2470 $pager = 'less';
2471 } elsif (length $pager == 0 || $pager eq 'cat') {
2472 return;
2473 }
2474 pipe my $rfd, my $wfd or return;
2475 defined(my $pid = fork) or croak $!;
2476 if (!$pid) {
2477 open STDOUT, '>&', $wfd or croak $!;
2478 return;
2479 }
2480 open STDIN, '<&', $rfd or croak $!;
2481 $ENV{LESS} ||= '-S';
2482 exec $pager or croak "Can't run pager: $!\n";;
2483 }
2484
2485 sub get_author_info {
2486 my ($dest, $author, $t, $tz) = @_;
2487 $author =~ s/(?:^\s*|\s*$)//g;
2488 $dest->{a_raw} = $author;
2489 my $_a;
2490 if ($_authors) {
2491 $_a = $rusers{$author} || undef;
2492 }
2493 if (!$_a) {
2494 ($_a) = ($author =~ /<([^>]+)\@[^>]+>$/);
2495 }
2496 $dest->{t} = $t;
2497 $dest->{tz} = $tz;
2498 $dest->{a} = $_a;
2499 # Date::Parse isn't in the standard Perl distro :(
2500 if ($tz =~ s/^\+//) {
2501 $t += tz_to_s_offset($tz);
2502 } elsif ($tz =~ s/^\-//) {
2503 $t -= tz_to_s_offset($tz);
2504 }
2505 $dest->{t_utc} = $t;
2506 }
2507
2508 sub process_commit {
2509 my ($c, $r_min, $r_max, $defer) = @_;
2510 if (defined $r_min && defined $r_max) {
2511 if ($r_min == $c->{r} && $r_min == $r_max) {
2512 show_commit($c);
2513 return 0;
2514 }
2515 return 1 if $r_min == $r_max;
2516 if ($r_min < $r_max) {
2517 # we need to reverse the print order
2518 return 0 if (defined $_limit && --$_limit < 0);
2519 push @$defer, $c;
2520 return 1;
2521 }
2522 if ($r_min != $r_max) {
2523 return 1 if ($r_min < $c->{r});
2524 return 1 if ($r_max > $c->{r});
2525 }
2526 }
2527 return 0 if (defined $_limit && --$_limit < 0);
2528 show_commit($c);
2529 return 1;
2530 }
2531
2532 sub show_commit {
2533 my $c = shift;
2534 if ($_oneline) {
2535 my $x = "\n";
2536 if (my $l = $c->{l}) {
2537 while ($l->[0] =~ /^\s*$/) { shift @$l }
2538 $x = $l->[0];
2539 }
2540 $_l_fmt ||= 'A' . length($c->{r});
2541 print 'r',pack($_l_fmt, $c->{r}),' | ';
2542 print "$c->{c} | " if $_show_commit;
2543 print $x;
2544 } else {
2545 show_commit_normal($c);
2546 }
2547 }
2548
2549 sub show_commit_normal {
2550 my ($c) = @_;
2551 print '-' x72, "\nr$c->{r} | ";
2552 print "$c->{c} | " if $_show_commit;
2553 print "$c->{a} | ", strftime("%Y-%m-%d %H:%M:%S %z (%a, %d %b %Y)",
2554 localtime($c->{t_utc})), ' | ';
2555 my $nr_line = 0;
2556
2557 if (my $l = $c->{l}) {
2558 while ($l->[$#$l] eq "\n" && $l->[($#$l - 1)] eq "\n") {
2559 pop @$l;
2560 }
2561 $nr_line = scalar @$l;
2562 if (!$nr_line) {
2563 print "1 line\n\n\n";
2564 } else {
2565 if ($nr_line == 1) {
2566 $nr_line = '1 line';
2567 } else {
2568 $nr_line .= ' lines';
2569 }
2570 print $nr_line, "\n\n";
2571 print $_ foreach @$l;
2572 }
2573 } else {
2574 print "1 line\n\n";
2575
2576 }
2577 foreach my $x (qw/raw diff/) {
2578 if ($c->{$x}) {
2579 print "\n";
2580 print $_ foreach @{$c->{$x}}
2581 }
2582 }
2583 }
2584
2585 sub libsvn_load {
2586 return unless $_use_lib;
2587 $_use_lib = eval {
2588 require SVN::Core;
2589 if ($SVN::Core::VERSION lt '1.1.0') {
2590 die "Need SVN::Core 1.1.0 or better ",
2591 "(got $SVN::Core::VERSION) ",
2592 "Falling back to command-line svn\n";
2593 }
2594 require SVN::Ra;
2595 require SVN::Delta;
2596 push @SVN::Git::Editor::ISA, 'SVN::Delta::Editor';
2597 my $kill_stupid_warnings = $SVN::Node::none.$SVN::Node::file.
2598 $SVN::Node::dir.$SVN::Node::unknown.
2599 $SVN::Node::none.$SVN::Node::file.
2600 $SVN::Node::dir.$SVN::Node::unknown;
2601 1;
2602 };
2603 }
2604
2605 sub libsvn_connect {
2606 my ($url) = @_;
2607 my $auth = SVN::Core::auth_open([SVN::Client::get_simple_provider(),
2608 SVN::Client::get_ssl_server_trust_file_provider(),
2609 SVN::Client::get_username_provider()]);
2610 my $s = eval { SVN::Ra->new(url => $url, auth => $auth) };
2611 return $s;
2612 }
2613
2614 sub libsvn_get_file {
2615 my ($gui, $f, $rev) = @_;
2616 my $p = $f;
2617 if (length $SVN_PATH > 0) {
2618 return unless ($p =~ s#^\Q$SVN_PATH\E/##);
2619 }
2620
2621 my ($hash, $pid, $in, $out);
2622 my $pool = SVN::Pool->new;
2623 defined($pid = open3($in, $out, '>&STDERR',
2624 qw/git-hash-object -w --stdin/)) or croak $!;
2625 # redirect STDOUT for SVN 1.1.x compatibility
2626 open my $stdout, '>&', \*STDOUT or croak $!;
2627 open STDOUT, '>&', $in or croak $!;
2628 my ($r, $props) = $SVN->get_file($f, $rev, \*STDOUT, $pool);
2629 $in->flush == 0 or croak $!;
2630 open STDOUT, '>&', $stdout or croak $!;
2631 close $in or croak $!;
2632 close $stdout or croak $!;
2633 $pool->clear;
2634 chomp($hash = do { local $/; <$out> });
2635 close $out or croak $!;
2636 waitpid $pid, 0;
2637 $hash =~ /^$sha1$/o or die "not a sha1: $hash\n";
2638
2639 my $mode = exists $props->{'svn:executable'} ? '100755' : '100644';
2640 if (exists $props->{'svn:special'}) {
2641 $mode = '120000';
2642 my $link = `git-cat-file blob $hash`;
2643 $link =~ s/^link // or die "svn:special file with contents: <",
2644 $link, "> is not understood\n";
2645 defined($pid = open3($in, $out, '>&STDERR',
2646 qw/git-hash-object -w --stdin/)) or croak $!;
2647 print $in $link;
2648 $in->flush == 0 or croak $!;
2649 close $in or croak $!;
2650 chomp($hash = do { local $/; <$out> });
2651 close $out or croak $!;
2652 waitpid $pid, 0;
2653 $hash =~ /^$sha1$/o or die "not a sha1: $hash\n";
2654 }
2655 print $gui $mode,' ',$hash,"\t",$p,"\0" or croak $!;
2656 }
2657
2658 sub libsvn_log_entry {
2659 my ($rev, $author, $date, $msg, $parents) = @_;
2660 my ($Y,$m,$d,$H,$M,$S) = ($date =~ /^(\d{4})\-(\d\d)\-(\d\d)T
2661 (\d\d)\:(\d\d)\:(\d\d).\d+Z$/x)
2662 or die "Unable to parse date: $date\n";
2663 if (defined $_authors && ! defined $users{$author}) {
2664 die "Author: $author not defined in $_authors file\n";
2665 }
2666 $msg = '' if ($rev == 0 && !defined $msg);
2667 return { revision => $rev, date => "+0000 $Y-$m-$d $H:$M:$S",
2668 author => $author, msg => $msg."\n", parents => $parents || [] }
2669 }
2670
2671 sub process_rm {
2672 my ($gui, $last_commit, $f) = @_;
2673 $f =~ s#^\Q$SVN_PATH\E/?## or return;
2674 # remove entire directories.
2675 if (safe_qx('git-ls-tree',$last_commit,'--',$f) =~ /^040000 tree/) {
2676 defined(my $pid = open my $ls, '-|') or croak $!;
2677 if (!$pid) {
2678 exec(qw/git-ls-tree -r --name-only -z/,
2679 $last_commit,'--',$f) or croak $!;
2680 }
2681 local $/ = "\0";
2682 while (<$ls>) {
2683 print $gui '0 ',0 x 40,"\t",$_ or croak $!;
2684 }
2685 close $ls or croak $?;
2686 } else {
2687 print $gui '0 ',0 x 40,"\t",$f,"\0" or croak $!;
2688 }
2689 }
2690
2691 sub libsvn_fetch {
2692 my ($last_commit, $paths, $rev, $author, $date, $msg) = @_;
2693 open my $gui, '| git-update-index -z --index-info' or croak $!;
2694 my @amr;
2695 foreach my $f (keys %$paths) {
2696 my $m = $paths->{$f}->action();
2697 $f =~ s#^/+##;
2698 if ($m =~ /^[DR]$/) {
2699 print "\t$m\t$f\n" unless $_q;
2700 process_rm($gui, $last_commit, $f);
2701 next if $m eq 'D';
2702 # 'R' can be file replacements, too, right?
2703 }
2704 my $pool = SVN::Pool->new;
2705 my $t = $SVN->check_path($f, $rev, $pool);
2706 if ($t == $SVN::Node::file) {
2707 if ($m =~ /^[AMR]$/) {
2708 push @amr, [ $m, $f ];
2709 } else {
2710 die "Unrecognized action: $m, ($f r$rev)\n";
2711 }
2712 } elsif ($t == $SVN::Node::dir && $m =~ /^[AR]$/) {
2713 my @traversed = ();
2714 libsvn_traverse($gui, '', $f, $rev, \@traversed);
2715 foreach (@traversed) {
2716 push @amr, [ $m, $_ ]
2717 }
2718 }
2719 $pool->clear;
2720 }
2721 foreach (@amr) {
2722 print "\t$_->[0]\t$_->[1]\n" unless $_q;
2723 libsvn_get_file($gui, $_->[1], $rev)
2724 }
2725 close $gui or croak $?;
2726 return libsvn_log_entry($rev, $author, $date, $msg, [$last_commit]);
2727 }
2728
2729 sub svn_grab_base_rev {
2730 defined(my $pid = open my $fh, '-|') or croak $!;
2731 if (!$pid) {
2732 open my $null, '>', '/dev/null' or croak $!;
2733 open STDERR, '>&', $null or croak $!;
2734 exec qw/git-rev-parse --verify/,"refs/remotes/$GIT_SVN^0"
2735 or croak $!;
2736 }
2737 chomp(my $c = do { local $/; <$fh> });
2738 close $fh;
2739 if (defined $c && length $c) {
2740 my ($url, $rev, $uuid) = cmt_metadata($c);
2741 return ($rev, $c) if defined $rev;
2742 }
2743 if ($_no_metadata) {
2744 my $offset = -41; # from tail
2745 my $rl;
2746 open my $fh, '<', $REVDB or
2747 die "--no-metadata specified and $REVDB not readable\n";
2748 seek $fh, $offset, 2;
2749 $rl = readline $fh;
2750 defined $rl or return (undef, undef);
2751 chomp $rl;
2752 while ($c ne $rl && tell $fh != 0) {
2753 $offset -= 41;
2754 seek $fh, $offset, 2;
2755 $rl = readline $fh;
2756 defined $rl or return (undef, undef);
2757 chomp $rl;
2758 }
2759 my $rev = tell $fh;
2760 croak $! if ($rev < -1);
2761 $rev = ($rev - 41) / 41;
2762 close $fh or croak $!;
2763 return ($rev, $c);
2764 }
2765 return (undef, undef);
2766 }
2767
2768 sub libsvn_parse_revision {
2769 my $base = shift;
2770 my $head = $SVN->get_latest_revnum();
2771 if (!defined $_revision || $_revision eq 'BASE:HEAD') {
2772 return ($base + 1, $head) if (defined $base);
2773 return (0, $head);
2774 }
2775 return ($1, $2) if ($_revision =~ /^(\d+):(\d+)$/);
2776 return ($_revision, $_revision) if ($_revision =~ /^\d+$/);
2777 if ($_revision =~ /^BASE:(\d+)$/) {
2778 return ($base + 1, $1) if (defined $base);
2779 return (0, $head);
2780 }
2781 return ($1, $head) if ($_revision =~ /^(\d+):HEAD$/);
2782 die "revision argument: $_revision not understood by git-svn\n",
2783 "Try using the command-line svn client instead\n";
2784 }
2785
2786 sub libsvn_traverse {
2787 my ($gui, $pfx, $path, $rev, $files) = @_;
2788 my $cwd = "$pfx/$path";
2789 my $pool = SVN::Pool->new;
2790 $cwd =~ s#^/+##g;
2791 my ($dirent, $r, $props) = $SVN->get_dir($cwd, $rev, $pool);
2792 foreach my $d (keys %$dirent) {
2793 my $t = $dirent->{$d}->kind;
2794 if ($t == $SVN::Node::dir) {
2795 libsvn_traverse($gui, $cwd, $d, $rev, $files);
2796 } elsif ($t == $SVN::Node::file) {
2797 my $file = "$cwd/$d";
2798 if (defined $files) {
2799 push @$files, $file;
2800 } else {
2801 print "\tA\t$file\n" unless $_q;
2802 libsvn_get_file($gui, $file, $rev);
2803 }
2804 }
2805 }
2806 $pool->clear;
2807 }
2808
2809 sub libsvn_traverse_ignore {
2810 my ($fh, $path, $r) = @_;
2811 $path =~ s#^/+##g;
2812 my $pool = SVN::Pool->new;
2813 my ($dirent, undef, $props) = $SVN->get_dir($path, $r, $pool);
2814 my $p = $path;
2815 $p =~ s#^\Q$SVN_PATH\E/?##;
2816 print $fh length $p ? "\n# $p\n" : "\n# /\n";
2817 if (my $s = $props->{'svn:ignore'}) {
2818 $s =~ s/[\r\n]+/\n/g;
2819 chomp $s;
2820 if (length $p == 0) {
2821 $s =~ s#\n#\n/$p#g;
2822 print $fh "/$s\n";
2823 } else {
2824 $s =~ s#\n#\n/$p/#g;
2825 print $fh "/$p/$s\n";
2826 }
2827 }
2828 foreach (sort keys %$dirent) {
2829 next if $dirent->{$_}->kind != $SVN::Node::dir;
2830 libsvn_traverse_ignore($fh, "$path/$_", $r);
2831 }
2832 $pool->clear;
2833 }
2834
2835 sub revisions_eq {
2836 my ($path, $r0, $r1) = @_;
2837 return 1 if $r0 == $r1;
2838 my $nr = 0;
2839 if ($_use_lib) {
2840 # should be OK to use Pool here (r1 - r0) should be small
2841 my $pool = SVN::Pool->new;
2842 libsvn_get_log($SVN, "/$path", $r0, $r1,
2843 0, 1, 1, sub {$nr++}, $pool);
2844 $pool->clear;
2845 } else {
2846 my ($url, undef) = repo_path_split($SVN_URL);
2847 my $svn_log = svn_log_raw("$url/$path","-r$r0:$r1");
2848 while (next_log_entry($svn_log)) { $nr++ }
2849 close $svn_log->{fh};
2850 }
2851 return 0 if ($nr > 1);
2852 return 1;
2853 }
2854
2855 sub libsvn_find_parent_branch {
2856 my ($paths, $rev, $author, $date, $msg) = @_;
2857 my $svn_path = '/'.$SVN_PATH;
2858
2859 # look for a parent from another branch:
2860 my $i = $paths->{$svn_path} or return;
2861 my $branch_from = $i->copyfrom_path or return;
2862 my $r = $i->copyfrom_rev;
2863 print STDERR "Found possible branch point: ",
2864 "$branch_from => $svn_path, $r\n";
2865 $branch_from =~ s#^/##;
2866 my $l_map = {};
2867 read_url_paths_all($l_map, '', "$GIT_DIR/svn");
2868 my $url = $SVN->{url};
2869 defined $l_map->{$url} or return;
2870 my $id = $l_map->{$url}->{$branch_from};
2871 if (!defined $id && $_follow_parent) {
2872 print STDERR "Following parent: $branch_from\@$r\n";
2873 # auto create a new branch and follow it
2874 $id = basename($branch_from);
2875 $id .= '@'.$r if -r "$GIT_DIR/svn/$id";
2876 while (-r "$GIT_DIR/svn/$id") {
2877 # just grow a tail if we're not unique enough :x
2878 $id .= '-';
2879 }
2880 }
2881 return unless defined $id;
2882
2883 my ($r0, $parent) = find_rev_before($r,$id,1);
2884 if ($_follow_parent && (!defined $r0 || !defined $parent)) {
2885 defined(my $pid = fork) or croak $!;
2886 if (!$pid) {
2887 $GIT_SVN = $ENV{GIT_SVN_ID} = $id;
2888 init_vars();
2889 $SVN_URL = "$url/$branch_from";
2890 $SVN_LOG = $SVN = undef;
2891 setup_git_svn();
2892 # we can't assume SVN_URL exists at r+1:
2893 $_revision = "0:$r";
2894 fetch_lib();
2895 exit 0;
2896 }
2897 waitpid $pid, 0;
2898 croak $? if $?;
2899 ($r0, $parent) = find_rev_before($r,$id,1);
2900 }
2901 return unless (defined $r0 && defined $parent);
2902 if (revisions_eq($branch_from, $r0, $r)) {
2903 unlink $GIT_SVN_INDEX;
2904 print STDERR "Found branch parent: ($GIT_SVN) $parent\n";
2905 sys(qw/git-read-tree/, $parent);
2906 return libsvn_fetch($parent, $paths, $rev,
2907 $author, $date, $msg);
2908 }
2909 print STDERR "Nope, branch point not imported or unknown\n";
2910 return undef;
2911 }
2912
2913 sub libsvn_get_log {
2914 my ($ra, @args) = @_;
2915 if ($SVN::Core::VERSION le '1.2.0') {
2916 splice(@args, 3, 1);
2917 }
2918 $ra->get_log(@args);
2919 }
2920
2921 sub libsvn_new_tree {
2922 if (my $log_entry = libsvn_find_parent_branch(@_)) {
2923 return $log_entry;
2924 }
2925 my ($paths, $rev, $author, $date, $msg) = @_;
2926 open my $gui, '| git-update-index -z --index-info' or croak $!;
2927 libsvn_traverse($gui, '', $SVN_PATH, $rev);
2928 close $gui or croak $?;
2929 return libsvn_log_entry($rev, $author, $date, $msg);
2930 }
2931
2932 sub find_graft_path_commit {
2933 my ($tree_paths, $p1, $r1) = @_;
2934 foreach my $x (keys %$tree_paths) {
2935 next unless ($p1 =~ /^\Q$x\E/);
2936 my $i = $tree_paths->{$x};
2937 my ($r0, $parent) = find_rev_before($r1,$i,1);
2938 return $parent if (defined $r0 && $r0 == $r1);
2939 print STDERR "r$r1 of $i not imported\n";
2940 next;
2941 }
2942 return undef;
2943 }
2944
2945 sub find_graft_path_parents {
2946 my ($grafts, $tree_paths, $c, $p0, $r0) = @_;
2947 foreach my $x (keys %$tree_paths) {
2948 next unless ($p0 =~ /^\Q$x\E/);
2949 my $i = $tree_paths->{$x};
2950 my ($r, $parent) = find_rev_before($r0, $i, 1);
2951 if (defined $r && defined $parent && revisions_eq($x,$r,$r0)) {
2952 my ($url_b, undef, $uuid_b) = cmt_metadata($c);
2953 my ($url_a, undef, $uuid_a) = cmt_metadata($parent);
2954 next if ($url_a && $url_b && $url_a eq $url_b &&
2955 $uuid_b eq $uuid_a);
2956 $grafts->{$c}->{$parent} = 1;
2957 }
2958 }
2959 }
2960
2961 sub libsvn_graft_file_copies {
2962 my ($grafts, $tree_paths, $path, $paths, $rev) = @_;
2963 foreach (keys %$paths) {
2964 my $i = $paths->{$_};
2965 my ($m, $p0, $r0) = ($i->action, $i->copyfrom_path,
2966 $i->copyfrom_rev);
2967 next unless (defined $p0 && defined $r0);
2968
2969 my $p1 = $_;
2970 $p1 =~ s#^/##;
2971 $p0 =~ s#^/##;
2972 my $c = find_graft_path_commit($tree_paths, $p1, $rev);
2973 next unless $c;
2974 find_graft_path_parents($grafts, $tree_paths, $c, $p0, $r0);
2975 }
2976 }
2977
2978 sub set_index {
2979 my $old = $ENV{GIT_INDEX_FILE};
2980 $ENV{GIT_INDEX_FILE} = shift;
2981 return $old;
2982 }
2983
2984 sub restore_index {
2985 my ($old) = @_;
2986 if (defined $old) {
2987 $ENV{GIT_INDEX_FILE} = $old;
2988 } else {
2989 delete $ENV{GIT_INDEX_FILE};
2990 }
2991 }
2992
2993 sub libsvn_commit_cb {
2994 my ($rev, $date, $committer, $c, $msg, $r_last, $cmt_last) = @_;
2995 if ($_optimize_commits && $rev == ($r_last + 1)) {
2996 my $log = libsvn_log_entry($rev,$committer,$date,$msg);
2997 $log->{tree} = get_tree_from_treeish($c);
2998 my $cmt = git_commit($log, $cmt_last, $c);
2999 my @diff = safe_qx('git-diff-tree', $cmt, $c);
3000 if (@diff) {
3001 print STDERR "Trees differ: $cmt $c\n",
3002 join('',@diff),"\n";
3003 exit 1;
3004 }
3005 } else {
3006 fetch("$rev=$c");
3007 }
3008 }
3009
3010 sub libsvn_ls_fullurl {
3011 my $fullurl = shift;
3012 my ($repo, $path) = repo_path_split($fullurl);
3013 $SVN ||= libsvn_connect($repo);
3014 my @ret;
3015 my $pool = SVN::Pool->new;
3016 my ($dirent, undef, undef) = $SVN->get_dir($path,
3017 $SVN->get_latest_revnum, $pool);
3018 foreach my $d (keys %$dirent) {
3019 if ($dirent->{$d}->kind == $SVN::Node::dir) {
3020 push @ret, "$d/"; # add '/' for compat with cli svn
3021 }
3022 }
3023 $pool->clear;
3024 return @ret;
3025 }
3026
3027
3028 sub libsvn_skip_unknown_revs {
3029 my $err = shift;
3030 my $errno = $err->apr_err();
3031 # Maybe the branch we're tracking didn't
3032 # exist when the repo started, so it's
3033 # not an error if it doesn't, just continue
3034 #
3035 # Wonderfully consistent library, eh?
3036 # 160013 - svn:// and file://
3037 # 175002 - http(s)://
3038 # More codes may be discovered later...
3039 if ($errno == 175002 || $errno == 160013) {
3040 return;
3041 }
3042 croak "Error from SVN, ($errno): ", $err->expanded_message,"\n";
3043 };
3044
3045 # Tie::File seems to be prone to offset errors if revisions get sparse,
3046 # it's not that fast, either. Tie::File is also not in Perl 5.6. So
3047 # one of my favorite modules is out :< Next up would be one of the DBM
3048 # modules, but I'm not sure which is most portable... So I'll just
3049 # go with something that's plain-text, but still capable of
3050 # being randomly accessed. So here's my ultra-simple fixed-width
3051 # database. All records are 40 characters + "\n", so it's easy to seek
3052 # to a revision: (41 * rev) is the byte offset.
3053 # A record of 40 0s denotes an empty revision.
3054 # And yes, it's still pretty fast (faster than Tie::File).
3055 sub revdb_set {
3056 my ($file, $rev, $commit) = @_;
3057 length $commit == 40 or croak "arg3 must be a full SHA1 hexsum\n";
3058 open my $fh, '+<', $file or croak $!;
3059 my $offset = $rev * 41;
3060 # assume that append is the common case:
3061 seek $fh, 0, 2 or croak $!;
3062 my $pos = tell $fh;
3063 if ($pos < $offset) {
3064 print $fh (('0' x 40),"\n") x (($offset - $pos) / 41);
3065 }
3066 seek $fh, $offset, 0 or croak $!;
3067 print $fh $commit,"\n";
3068 close $fh or croak $!;
3069 }
3070
3071 sub revdb_get {
3072 my ($file, $rev) = @_;
3073 my $ret;
3074 my $offset = $rev * 41;
3075 open my $fh, '<', $file or croak $!;
3076 seek $fh, $offset, 0;
3077 if (tell $fh == $offset) {
3078 $ret = readline $fh;
3079 if (defined $ret) {
3080 chomp $ret;
3081 $ret = undef if ($ret =~ /^0{40}$/);
3082 }
3083 }
3084 close $fh or croak $!;
3085 return $ret;
3086 }
3087
3088 sub copy_remote_ref {
3089 my $origin = $_cp_remote ? $_cp_remote : 'origin';
3090 my $ref = "refs/remotes/$GIT_SVN";
3091 if (safe_qx('git-ls-remote', $origin, $ref)) {
3092 sys(qw/git fetch/, $origin, "$ref:$ref");
3093 } else {
3094 die "Unable to find remote reference: ",
3095 "refs/remotes/$GIT_SVN on $origin\n";
3096 }
3097 }
3098
3099 package SVN::Git::Editor;
3100 use vars qw/@ISA/;
3101 use strict;
3102 use warnings;
3103 use Carp qw/croak/;
3104 use IO::File;
3105
3106 sub new {
3107 my $class = shift;
3108 my $git_svn = shift;
3109 my $self = SVN::Delta::Editor->new(@_);
3110 bless $self, $class;
3111 foreach (qw/svn_path c r ra /) {
3112 die "$_ required!\n" unless (defined $git_svn->{$_});
3113 $self->{$_} = $git_svn->{$_};
3114 }
3115 $self->{pool} = SVN::Pool->new;
3116 $self->{bat} = { '' => $self->open_root($self->{r}, $self->{pool}) };
3117 $self->{rm} = { };
3118 require Digest::MD5;
3119 return $self;
3120 }
3121
3122 sub split_path {
3123 return ($_[0] =~ m#^(.*?)/?([^/]+)$#);
3124 }
3125
3126 sub repo_path {
3127 (defined $_[1] && length $_[1]) ? "$_[0]->{svn_path}/$_[1]"
3128 : $_[0]->{svn_path}
3129 }
3130
3131 sub url_path {
3132 my ($self, $path) = @_;
3133 $self->{ra}->{url} . '/' . $self->repo_path($path);
3134 }
3135
3136 sub rmdirs {
3137 my ($self, $q) = @_;
3138 my $rm = $self->{rm};
3139 delete $rm->{''}; # we never delete the url we're tracking
3140 return unless %$rm;
3141
3142 foreach (keys %$rm) {
3143 my @d = split m#/#, $_;
3144 my $c = shift @d;
3145 $rm->{$c} = 1;
3146 while (@d) {
3147 $c .= '/' . shift @d;
3148 $rm->{$c} = 1;
3149 }
3150 }
3151 delete $rm->{$self->{svn_path}};
3152 delete $rm->{''}; # we never delete the url we're tracking
3153 return unless %$rm;
3154
3155 defined(my $pid = open my $fh,'-|') or croak $!;
3156 if (!$pid) {
3157 exec qw/git-ls-tree --name-only -r -z/, $self->{c} or croak $!;
3158 }
3159 local $/ = "\0";
3160 my @svn_path = split m#/#, $self->{svn_path};
3161 while (<$fh>) {
3162 chomp;
3163 my @dn = (@svn_path, (split m#/#, $_));
3164 while (pop @dn) {
3165 delete $rm->{join '/', @dn};
3166 }
3167 unless (%$rm) {
3168 close $fh;
3169 return;
3170 }
3171 }
3172 close $fh;
3173
3174 my ($r, $p, $bat) = ($self->{r}, $self->{pool}, $self->{bat});
3175 foreach my $d (sort { $b =~ tr#/#/# <=> $a =~ tr#/#/# } keys %$rm) {
3176 $self->close_directory($bat->{$d}, $p);
3177 my ($dn) = ($d =~ m#^(.*?)/?(?:[^/]+)$#);
3178 print "\tD+\t/$d/\n" unless $q;
3179 $self->SUPER::delete_entry($d, $r, $bat->{$dn}, $p);
3180 delete $bat->{$d};
3181 }
3182 }
3183
3184 sub open_or_add_dir {
3185 my ($self, $full_path, $baton) = @_;
3186 my $p = SVN::Pool->new;
3187 my $t = $self->{ra}->check_path($full_path, $self->{r}, $p);
3188 $p->clear;
3189 if ($t == $SVN::Node::none) {
3190 return $self->add_directory($full_path, $baton,
3191 undef, -1, $self->{pool});
3192 } elsif ($t == $SVN::Node::dir) {
3193 return $self->open_directory($full_path, $baton,
3194 $self->{r}, $self->{pool});
3195 }
3196 print STDERR "$full_path already exists in repository at ",
3197 "r$self->{r} and it is not a directory (",
3198 ($t == $SVN::Node::file ? 'file' : 'unknown'),"/$t)\n";
3199 exit 1;
3200 }
3201
3202 sub ensure_path {
3203 my ($self, $path) = @_;
3204 my $bat = $self->{bat};
3205 $path = $self->repo_path($path);
3206 return $bat->{''} unless (length $path);
3207 my @p = split m#/+#, $path;
3208 my $c = shift @p;
3209 $bat->{$c} ||= $self->open_or_add_dir($c, $bat->{''});
3210 while (@p) {
3211 my $c0 = $c;
3212 $c .= '/' . shift @p;
3213 $bat->{$c} ||= $self->open_or_add_dir($c, $bat->{$c0});
3214 }
3215 return $bat->{$c};
3216 }
3217
3218 sub A {
3219 my ($self, $m, $q) = @_;
3220 my ($dir, $file) = split_path($m->{file_b});
3221 my $pbat = $self->ensure_path($dir);
3222 my $fbat = $self->add_file($self->repo_path($m->{file_b}), $pbat,
3223 undef, -1);
3224 print "\tA\t$m->{file_b}\n" unless $q;
3225 $self->chg_file($fbat, $m);
3226 $self->close_file($fbat,undef,$self->{pool});
3227 }
3228
3229 sub C {
3230 my ($self, $m, $q) = @_;
3231 my ($dir, $file) = split_path($m->{file_b});
3232 my $pbat = $self->ensure_path($dir);
3233 my $fbat = $self->add_file($self->repo_path($m->{file_b}), $pbat,
3234 $self->url_path($m->{file_a}), $self->{r});
3235 print "\tC\t$m->{file_a} => $m->{file_b}\n" unless $q;
3236 $self->chg_file($fbat, $m);
3237 $self->close_file($fbat,undef,$self->{pool});
3238 }
3239
3240 sub delete_entry {
3241 my ($self, $path, $pbat) = @_;
3242 my $rpath = $self->repo_path($path);
3243 my ($dir, $file) = split_path($rpath);
3244 $self->{rm}->{$dir} = 1;
3245 $self->SUPER::delete_entry($rpath, $self->{r}, $pbat, $self->{pool});
3246 }
3247
3248 sub R {
3249 my ($self, $m, $q) = @_;
3250 my ($dir, $file) = split_path($m->{file_b});
3251 my $pbat = $self->ensure_path($dir);
3252 my $fbat = $self->add_file($self->repo_path($m->{file_b}), $pbat,
3253 $self->url_path($m->{file_a}), $self->{r});
3254 print "\tR\t$m->{file_a} => $m->{file_b}\n" unless $q;
3255 $self->chg_file($fbat, $m);
3256 $self->close_file($fbat,undef,$self->{pool});
3257
3258 ($dir, $file) = split_path($m->{file_a});
3259 $pbat = $self->ensure_path($dir);
3260 $self->delete_entry($m->{file_a}, $pbat);
3261 }
3262
3263 sub M {
3264 my ($self, $m, $q) = @_;
3265 my ($dir, $file) = split_path($m->{file_b});
3266 my $pbat = $self->ensure_path($dir);
3267 my $fbat = $self->open_file($self->repo_path($m->{file_b}),
3268 $pbat,$self->{r},$self->{pool});
3269 print "\t$m->{chg}\t$m->{file_b}\n" unless $q;
3270 $self->chg_file($fbat, $m);
3271 $self->close_file($fbat,undef,$self->{pool});
3272 }
3273
3274 sub T { shift->M(@_) }
3275
3276 sub change_file_prop {
3277 my ($self, $fbat, $pname, $pval) = @_;
3278 $self->SUPER::change_file_prop($fbat, $pname, $pval, $self->{pool});
3279 }
3280
3281 sub chg_file {
3282 my ($self, $fbat, $m) = @_;
3283 if ($m->{mode_b} =~ /755$/ && $m->{mode_a} !~ /755$/) {
3284 $self->change_file_prop($fbat,'svn:executable','*');
3285 } elsif ($m->{mode_b} !~ /755$/ && $m->{mode_a} =~ /755$/) {
3286 $self->change_file_prop($fbat,'svn:executable',undef);
3287 }
3288 my $fh = IO::File->new_tmpfile or croak $!;
3289 if ($m->{mode_b} =~ /^120/) {
3290 print $fh 'link ' or croak $!;
3291 $self->change_file_prop($fbat,'svn:special','*');
3292 } elsif ($m->{mode_a} =~ /^120/ && $m->{mode_b} !~ /^120/) {
3293 $self->change_file_prop($fbat,'svn:special',undef);
3294 }
3295 defined(my $pid = fork) or croak $!;
3296 if (!$pid) {
3297 open STDOUT, '>&', $fh or croak $!;
3298 exec qw/git-cat-file blob/, $m->{sha1_b} or croak $!;
3299 }
3300 waitpid $pid, 0;
3301 croak $? if $?;
3302 $fh->flush == 0 or croak $!;
3303 seek $fh, 0, 0 or croak $!;
3304
3305 my $md5 = Digest::MD5->new;
3306 $md5->addfile($fh) or croak $!;
3307 seek $fh, 0, 0 or croak $!;
3308
3309 my $exp = $md5->hexdigest;
3310 my $atd = $self->apply_textdelta($fbat, undef, $self->{pool});
3311 my $got = SVN::TxDelta::send_stream($fh, @$atd, $self->{pool});
3312 die "Checksum mismatch\nexpected: $exp\ngot: $got\n" if ($got ne $exp);
3313
3314 close $fh or croak $!;
3315 }
3316
3317 sub D {
3318 my ($self, $m, $q) = @_;
3319 my ($dir, $file) = split_path($m->{file_b});
3320 my $pbat = $self->ensure_path($dir);
3321 print "\tD\t$m->{file_b}\n" unless $q;
3322 $self->delete_entry($m->{file_b}, $pbat);
3323 }
3324
3325 sub close_edit {
3326 my ($self) = @_;
3327 my ($p,$bat) = ($self->{pool}, $self->{bat});
3328 foreach (sort { $b =~ tr#/#/# <=> $a =~ tr#/#/# } keys %$bat) {
3329 $self->close_directory($bat->{$_}, $p);
3330 }
3331 $self->SUPER::close_edit($p);
3332 $p->clear;
3333 }
3334
3335 sub abort_edit {
3336 my ($self) = @_;
3337 $self->SUPER::abort_edit($self->{pool});
3338 $self->{pool}->clear;
3339 }
3340
3341 __END__
3342
3343 Data structures:
3344
3345 $svn_log hashref (as returned by svn_log_raw)
3346 {
3347 fh => file handle of the log file,
3348 state => state of the log file parser (sep/msg/rev/msg_start...)
3349 }
3350
3351 $log_msg hashref as returned by next_log_entry($svn_log)
3352 {
3353 msg => 'whitespace-formatted log entry
3354 ', # trailing newline is preserved
3355 revision => '8', # integer
3356 date => '2004-02-24T17:01:44.108345Z', # commit date
3357 author => 'committer name'
3358 };
3359
3360
3361 @mods = array of diff-index line hashes, each element represents one line
3362 of diff-index output
3363
3364 diff-index line ($m hash)
3365 {
3366 mode_a => first column of diff-index output, no leading ':',
3367 mode_b => second column of diff-index output,
3368 sha1_b => sha1sum of the final blob,
3369 chg => change type [MCRADT],
3370 file_a => original file name of a file (iff chg is 'C' or 'R')
3371 file_b => new/current file name of a file (any chg)
3372 }
3373 ;
3374
3375 # retval of read_url_paths{,_all}();
3376 $l_map = {
3377 # repository root url
3378 'https://svn.musicpd.org' => {
3379 # repository path # GIT_SVN_ID
3380 'mpd/trunk' => 'trunk',
3381 'mpd/tags/0.11.5' => 'tags/0.11.5',
3382 },
3383 }
3384
3385 Notes:
3386 I don't trust the each() function on unless I created %hash myself
3387 because the internal iterator may not have started at base.
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