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Start handling references internally as a sorted in-memory list
[alt-git.git] / git-svn.perl
blob0290850b6639b4865d0941089d00a8c2ac5de366
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 $_message = $_file = undef;
823 }
824
825 ########################### utility functions #########################
826
827 sub cmt_showable {
828 my ($c) = @_;
829 return 1 if defined $c->{r};
830 if ($c->{l} && $c->{l}->[-1] eq "...\n" &&
831 $c->{a_raw} =~ /\@([a-f\d\-]+)>$/) {
832 my @msg = safe_qx(qw/git-cat-file commit/, $c->{c});
833 shift @msg while ($msg[0] ne "\n");
834 shift @msg;
835 @{$c->{l}} = grep !/^git-svn-id: /, @msg;
836
837 (undef, $c->{r}, undef) = extract_metadata(
838 (grep(/^git-svn-id: /, @msg))[-1]);
839 }
840 return defined $c->{r};
841 }
842
843 sub git_svn_log_cmd {
844 my ($r_min, $r_max) = @_;
845 my @cmd = (qw/git-log --abbrev-commit --pretty=raw
846 --default/, "refs/remotes/$GIT_SVN");
847 push @cmd, '--summary' if $_verbose;
848 return @cmd unless defined $r_max;
849 if ($r_max == $r_min) {
850 push @cmd, '--max-count=1';
851 if (my $c = revdb_get($REVDB, $r_max)) {
852 push @cmd, $c;
853 }
854 } else {
855 my ($c_min, $c_max);
856 $c_max = revdb_get($REVDB, $r_max);
857 $c_min = revdb_get($REVDB, $r_min);
858 if ($c_min && $c_max) {
859 if ($r_max > $r_max) {
860 push @cmd, "$c_min..$c_max";
861 } else {
862 push @cmd, "$c_max..$c_min";
863 }
864 } elsif ($r_max > $r_min) {
865 push @cmd, $c_max;
866 } else {
867 push @cmd, $c_min;
868 }
869 }
870 return @cmd;
871 }
872
873 sub fetch_child_id {
874 my $id = shift;
875 print "Fetching $id\n";
876 my $ref = "$GIT_DIR/refs/remotes/$id";
877 defined(my $pid = open my $fh, '-|') or croak $!;
878 if (!$pid) {
879 $_repack = undef;
880 $GIT_SVN = $ENV{GIT_SVN_ID} = $id;
881 init_vars();
882 fetch(@_);
883 exit 0;
884 }
885 while (<$fh>) {
886 print $_;
887 check_repack() if (/^r\d+ = $sha1/);
888 }
889 close $fh or croak $?;
890 }
891
892 sub rec_fetch {
893 my ($pfx, $p, @args) = @_;
894 my @dir;
895 foreach (sort <$p/*>) {
896 if (-r "$_/info/url") {
897 $pfx .= '/' if $pfx && $pfx !~ m!/$!;
898 my $id = $pfx . basename $_;
899 next if $id eq 'trunk';
900 fetch_child_id($id, @args);
901 } elsif (-d $_) {
902 push @dir, $_;
903 }
904 }
905 foreach (@dir) {
906 my $x = $_;
907 $x =~ s!^\Q$GIT_DIR\E/svn/!!;
908 rec_fetch($x, $_);
909 }
910 }
911
912 sub complete_url_ls_init {
913 my ($url, $var, $switch, $pfx) = @_;
914 unless ($var) {
915 print STDERR "W: $switch not specified\n";
916 return;
917 }
918 $var =~ s#/+$##;
919 if ($var !~ m#^[a-z\+]+://#) {
920 $var = '/' . $var if ($var !~ m#^/#);
921 unless ($url) {
922 print STDERR "E: '$var' is not a complete URL ",
923 "and a separate URL is not specified\n";
924 exit 1;
925 }
926 $var = $url . $var;
927 }
928 chomp(my @ls = $_use_lib ? libsvn_ls_fullurl($var)
929 : safe_qx(qw/svn ls --non-interactive/, $var));
930 my $old = $GIT_SVN;
931 defined(my $pid = fork) or croak $!;
932 if (!$pid) {
933 foreach my $u (map { "$var/$_" } (grep m!/$!, @ls)) {
934 $u =~ s#/+$##;
935 if ($u !~ m!\Q$var\E/(.+)$!) {
936 print STDERR "W: Unrecognized URL: $u\n";
937 die "This should never happen\n";
938 }
939 my $id = $pfx.$1;
940 print "init $u => $id\n";
941 $GIT_SVN = $ENV{GIT_SVN_ID} = $id;
942 init_vars();
943 init($u);
944 }
945 exit 0;
946 }
947 waitpid $pid, 0;
948 croak $? if $?;
949 }
950
951 sub common_prefix {
952 my $paths = shift;
953 my %common;
954 foreach (@$paths) {
955 my @tmp = split m#/#, $_;
956 my $p = '';
957 while (my $x = shift @tmp) {
958 $p .= "/$x";
959 $common{$p} ||= 0;
960 $common{$p}++;
961 }
962 }
963 foreach (sort {length $b <=> length $a} keys %common) {
964 if ($common{$_} == @$paths) {
965 return $_;
966 }
967 }
968 return '';
969 }
970
971 # grafts set here are 'stronger' in that they're based on actual tree
972 # matches, and won't be deleted from merge-base checking in write_grafts()
973 sub graft_tree_joins {
974 my $grafts = shift;
975 map_tree_joins() if (@_branch_from && !%tree_map);
976 return unless %tree_map;
977
978 git_svn_each(sub {
979 my $i = shift;
980 defined(my $pid = open my $fh, '-|') or croak $!;
981 if (!$pid) {
982 exec qw/git-rev-list --pretty=raw/,
983 "refs/remotes/$i" or croak $!;
984 }
985 while (<$fh>) {
986 next unless /^commit ($sha1)$/o;
987 my $c = $1;
988 my ($t) = (<$fh> =~ /^tree ($sha1)$/o);
989 next unless $tree_map{$t};
990
991 my $l;
992 do {
993 $l = readline $fh;
994 } until ($l =~ /^committer (?:.+) (\d+) ([\-\+]?\d+)$/);
995
996 my ($s, $tz) = ($1, $2);
997 if ($tz =~ s/^\+//) {
998 $s += tz_to_s_offset($tz);
999 } elsif ($tz =~ s/^\-//) {
1000 $s -= tz_to_s_offset($tz);
1001 }
1002
1003 my ($url_a, $r_a, $uuid_a) = cmt_metadata($c);
1004
1005 foreach my $p (@{$tree_map{$t}}) {
1006 next if $p eq $c;
1007 my $mb = eval {
1008 safe_qx('git-merge-base', $c, $p)
1009 };
1010 next unless ($@ || $?);
1011 if (defined $r_a) {
1012 # see if SVN says it's a relative
1013 my ($url_b, $r_b, $uuid_b) =
1014 cmt_metadata($p);
1015 next if (defined $url_b &&
1016 defined $url_a &&
1017 ($url_a eq $url_b) &&
1018 ($uuid_a eq $uuid_b));
1019 if ($uuid_a eq $uuid_b) {
1020 if ($r_b < $r_a) {
1021 $grafts->{$c}->{$p} = 2;
1022 next;
1023 } elsif ($r_b > $r_a) {
1024 $grafts->{$p}->{$c} = 2;
1025 next;
1026 }
1027 }
1028 }
1029 my $ct = get_commit_time($p);
1030 if ($ct < $s) {
1031 $grafts->{$c}->{$p} = 2;
1032 } elsif ($ct > $s) {
1033 $grafts->{$p}->{$c} = 2;
1034 }
1035 # what should we do when $ct == $s ?
1036 }
1037 }
1038 close $fh or croak $?;
1039 });
1040 }
1041
1042 # this isn't funky-filename safe, but good enough for now...
1043 sub graft_file_copy_cmd {
1044 my ($grafts, $l_map, $u) = @_;
1045 my $paths = $l_map->{$u};
1046 my $pfx = common_prefix([keys %$paths]);
1047 $SVN_URL ||= $u.$pfx;
1048 my $pid = open my $fh, '-|';
1049 defined $pid or croak $!;
1050 unless ($pid) {
1051 my @exec = qw/svn log -v/;
1052 push @exec, "-r$_revision" if defined $_revision;
1053 exec @exec, $u.$pfx or croak $!;
1054 }
1055 my ($r, $mp) = (undef, undef);
1056 while (<$fh>) {
1057 chomp;
1058 if (/^\-{72}$/) {
1059 $mp = $r = undef;
1060 } elsif (/^r(\d+) \| /) {
1061 $r = $1 unless defined $r;
1062 } elsif (/^Changed paths:/) {
1063 $mp = 1;
1064 } elsif ($mp && m#^ [AR] /(\S.*?) \(from /(\S+?):(\d+)\)$#) {
1065 my ($p1, $p0, $r0) = ($1, $2, $3);
1066 my $c = find_graft_path_commit($paths, $p1, $r);
1067 next unless $c;
1068 find_graft_path_parents($grafts, $paths, $c, $p0, $r0);
1069 }
1070 }
1071 }
1072
1073 sub graft_file_copy_lib {
1074 my ($grafts, $l_map, $u) = @_;
1075 my $tree_paths = $l_map->{$u};
1076 my $pfx = common_prefix([keys %$tree_paths]);
1077 my ($repo, $path) = repo_path_split($u.$pfx);
1078 $SVN_LOG ||= libsvn_connect($repo);
1079 $SVN ||= libsvn_connect($repo);
1080
1081 my ($base, $head) = libsvn_parse_revision();
1082 my $inc = 1000;
1083 my ($min, $max) = ($base, $head < $base+$inc ? $head : $base+$inc);
1084 my $eh = $SVN::Error::handler;
1085 $SVN::Error::handler = \&libsvn_skip_unknown_revs;
1086 while (1) {
1087 my $pool = SVN::Pool->new;
1088 libsvn_get_log($SVN_LOG, "/$path", $min, $max, 0, 1, 1,
1089 sub {
1090 libsvn_graft_file_copies($grafts, $tree_paths,
1091 $path, @_);
1092 }, $pool);
1093 $pool->clear;
1094 last if ($max >= $head);
1095 $min = $max + 1;
1096 $max += $inc;
1097 $max = $head if ($max > $head);
1098 }
1099 $SVN::Error::handler = $eh;
1100 }
1101
1102 sub process_merge_msg_matches {
1103 my ($grafts, $l_map, $u, $p, $c, @matches) = @_;
1104 my (@strong, @weak);
1105 foreach (@matches) {
1106 # merging with ourselves is not interesting
1107 next if $_ eq $p;
1108 if ($l_map->{$u}->{$_}) {
1109 push @strong, $_;
1110 } else {
1111 push @weak, $_;
1112 }
1113 }
1114 foreach my $w (@weak) {
1115 last if @strong;
1116 # no exact match, use branch name as regexp.
1117 my $re = qr/\Q$w\E/i;
1118 foreach (keys %{$l_map->{$u}}) {
1119 if (/$re/) {
1120 push @strong, $l_map->{$u}->{$_};
1121 last;
1122 }
1123 }
1124 last if @strong;
1125 $w = basename($w);
1126 $re = qr/\Q$w\E/i;
1127 foreach (keys %{$l_map->{$u}}) {
1128 if (/$re/) {
1129 push @strong, $l_map->{$u}->{$_};
1130 last;
1131 }
1132 }
1133 }
1134 my ($rev) = ($c->{m} =~ /^git-svn-id:\s(?:\S+?)\@(\d+)
1135 \s(?:[a-f\d\-]+)$/xsm);
1136 unless (defined $rev) {
1137 ($rev) = ($c->{m} =~/^git-svn-id:\s(\d+)
1138 \@(?:[a-f\d\-]+)/xsm);
1139 return unless defined $rev;
1140 }
1141 foreach my $m (@strong) {
1142 my ($r0, $s0) = find_rev_before($rev, $m, 1);
1143 $grafts->{$c->{c}}->{$s0} = 1 if defined $s0;
1144 }
1145 }
1146
1147 sub graft_merge_msg {
1148 my ($grafts, $l_map, $u, $p, @re) = @_;
1149
1150 my $x = $l_map->{$u}->{$p};
1151 my $rl = rev_list_raw($x);
1152 while (my $c = next_rev_list_entry($rl)) {
1153 foreach my $re (@re) {
1154 my (@br) = ($c->{m} =~ /$re/g);
1155 next unless @br;
1156 process_merge_msg_matches($grafts,$l_map,$u,$p,$c,@br);
1157 }
1158 }
1159 }
1160
1161 sub read_uuid {
1162 return if $SVN_UUID;
1163 if ($_use_lib) {
1164 my $pool = SVN::Pool->new;
1165 $SVN_UUID = $SVN->get_uuid($pool);
1166 $pool->clear;
1167 } else {
1168 my $info = shift || svn_info('.');
1169 $SVN_UUID = $info->{'Repository UUID'} or
1170 croak "Repository UUID unreadable\n";
1171 }
1172 }
1173
1174 sub quiet_run {
1175 my $pid = fork;
1176 defined $pid or croak $!;
1177 if (!$pid) {
1178 open my $null, '>', '/dev/null' or croak $!;
1179 open STDERR, '>&', $null or croak $!;
1180 open STDOUT, '>&', $null or croak $!;
1181 exec @_ or croak $!;
1182 }
1183 waitpid $pid, 0;
1184 return $?;
1185 }
1186
1187 sub repo_path_split {
1188 my $full_url = shift;
1189 $full_url =~ s#/+$##;
1190
1191 foreach (@repo_path_split_cache) {
1192 if ($full_url =~ s#$_##) {
1193 my $u = $1;
1194 $full_url =~ s#^/+##;
1195 return ($u, $full_url);
1196 }
1197 }
1198
1199 if ($_use_lib) {
1200 my $tmp = libsvn_connect($full_url);
1201 my $url = $tmp->get_repos_root;
1202 $full_url =~ s#^\Q$url\E/*##;
1203 push @repo_path_split_cache, qr/^(\Q$url\E)/;
1204 return ($url, $full_url);
1205 } else {
1206 my ($url, $path) = ($full_url =~ m!^([a-z\+]+://[^/]*)(.*)$!i);
1207 $path =~ s#^/+##;
1208 my @paths = split(m#/+#, $path);
1209 while (quiet_run(qw/svn ls --non-interactive/, $url)) {
1210 my $n = shift @paths || last;
1211 $url .= "/$n";
1212 }
1213 push @repo_path_split_cache, qr/^(\Q$url\E)/;
1214 $path = join('/',@paths);
1215 return ($url, $path);
1216 }
1217 }
1218
1219 sub setup_git_svn {
1220 defined $SVN_URL or croak "SVN repository location required\n";
1221 unless (-d $GIT_DIR) {
1222 croak "GIT_DIR=$GIT_DIR does not exist!\n";
1223 }
1224 mkpath([$GIT_SVN_DIR]);
1225 mkpath(["$GIT_SVN_DIR/info"]);
1226 open my $fh, '>>',$REVDB or croak $!;
1227 close $fh;
1228 s_to_file($SVN_URL,"$GIT_SVN_DIR/info/url");
1229
1230 }
1231
1232 sub assert_svn_wc_clean {
1233 return if $_use_lib;
1234 my ($svn_rev) = @_;
1235 croak "$svn_rev is not an integer!\n" unless ($svn_rev =~ /^\d+$/);
1236 my $lcr = svn_info('.')->{'Last Changed Rev'};
1237 if ($svn_rev != $lcr) {
1238 print STDERR "Checking for copy-tree ... ";
1239 my @diff = grep(/^Index: /,(safe_qx(qw(svn diff),
1240 "-r$lcr:$svn_rev")));
1241 if (@diff) {
1242 croak "Nope! Expected r$svn_rev, got r$lcr\n";
1243 } else {
1244 print STDERR "OK!\n";
1245 }
1246 }
1247 my @status = grep(!/^Performing status on external/,(`svn status`));
1248 @status = grep(!/^\s*$/,@status);
1249 if (scalar @status) {
1250 print STDERR "Tree ($SVN_WC) is not clean:\n";
1251 print STDERR $_ foreach @status;
1252 croak;
1253 }
1254 }
1255
1256 sub get_tree_from_treeish {
1257 my ($treeish) = @_;
1258 croak "Not a sha1: $treeish\n" unless $treeish =~ /^$sha1$/o;
1259 chomp(my $type = `git-cat-file -t $treeish`);
1260 my $expected;
1261 while ($type eq 'tag') {
1262 chomp(($treeish, $type) = `git-cat-file tag $treeish`);
1263 }
1264 if ($type eq 'commit') {
1265 $expected = (grep /^tree /,`git-cat-file commit $treeish`)[0];
1266 ($expected) = ($expected =~ /^tree ($sha1)$/);
1267 die "Unable to get tree from $treeish\n" unless $expected;
1268 } elsif ($type eq 'tree') {
1269 $expected = $treeish;
1270 } else {
1271 die "$treeish is a $type, expected tree, tag or commit\n";
1272 }
1273 return $expected;
1274 }
1275
1276 sub assert_tree {
1277 return if $_use_lib;
1278 my ($treeish) = @_;
1279 my $expected = get_tree_from_treeish($treeish);
1280
1281 my $tmpindex = $GIT_SVN_INDEX.'.assert-tmp';
1282 if (-e $tmpindex) {
1283 unlink $tmpindex or croak $!;
1284 }
1285 my $old_index = set_index($tmpindex);
1286 index_changes(1);
1287 chomp(my $tree = `git-write-tree`);
1288 restore_index($old_index);
1289 if ($tree ne $expected) {
1290 croak "Tree mismatch, Got: $tree, Expected: $expected\n";
1291 }
1292 unlink $tmpindex;
1293 }
1294
1295 sub parse_diff_tree {
1296 my $diff_fh = shift;
1297 local $/ = "\0";
1298 my $state = 'meta';
1299 my @mods;
1300 while (<$diff_fh>) {
1301 chomp $_; # this gets rid of the trailing "\0"
1302 if ($state eq 'meta' && /^:(\d{6})\s(\d{6})\s
1303 $sha1\s($sha1)\s([MTCRAD])\d*$/xo) {
1304 push @mods, { mode_a => $1, mode_b => $2,
1305 sha1_b => $3, chg => $4 };
1306 if ($4 =~ /^(?:C|R)$/) {
1307 $state = 'file_a';
1308 } else {
1309 $state = 'file_b';
1310 }
1311 } elsif ($state eq 'file_a') {
1312 my $x = $mods[$#mods] or croak "Empty array\n";
1313 if ($x->{chg} !~ /^(?:C|R)$/) {
1314 croak "Error parsing $_, $x->{chg}\n";
1315 }
1316 $x->{file_a} = $_;
1317 $state = 'file_b';
1318 } elsif ($state eq 'file_b') {
1319 my $x = $mods[$#mods] or croak "Empty array\n";
1320 if (exists $x->{file_a} && $x->{chg} !~ /^(?:C|R)$/) {
1321 croak "Error parsing $_, $x->{chg}\n";
1322 }
1323 if (!exists $x->{file_a} && $x->{chg} =~ /^(?:C|R)$/) {
1324 croak "Error parsing $_, $x->{chg}\n";
1325 }
1326 $x->{file_b} = $_;
1327 $state = 'meta';
1328 } else {
1329 croak "Error parsing $_\n";
1330 }
1331 }
1332 close $diff_fh or croak $?;
1333
1334 return \@mods;
1335 }
1336
1337 sub svn_check_prop_executable {
1338 my $m = shift;
1339 return if -l $m->{file_b};
1340 if ($m->{mode_b} =~ /755$/) {
1341 chmod((0755 &~ umask),$m->{file_b}) or croak $!;
1342 if ($m->{mode_a} !~ /755$/) {
1343 sys(qw(svn propset svn:executable 1), $m->{file_b});
1344 }
1345 -x $m->{file_b} or croak "$m->{file_b} is not executable!\n";
1346 } elsif ($m->{mode_b} !~ /755$/ && $m->{mode_a} =~ /755$/) {
1347 sys(qw(svn propdel svn:executable), $m->{file_b});
1348 chmod((0644 &~ umask),$m->{file_b}) or croak $!;
1349 -x $m->{file_b} and croak "$m->{file_b} is executable!\n";
1350 }
1351 }
1352
1353 sub svn_ensure_parent_path {
1354 my $dir_b = dirname(shift);
1355 svn_ensure_parent_path($dir_b) if ($dir_b ne File::Spec->curdir);
1356 mkpath([$dir_b]) unless (-d $dir_b);
1357 sys(qw(svn add -N), $dir_b) unless (-d "$dir_b/.svn");
1358 }
1359
1360 sub precommit_check {
1361 my $mods = shift;
1362 my (%rm_file, %rmdir_check, %added_check);
1363
1364 my %o = ( D => 0, R => 1, C => 2, A => 3, M => 3, T => 3 );
1365 foreach my $m (sort { $o{$a->{chg}} <=> $o{$b->{chg}} } @$mods) {
1366 if ($m->{chg} eq 'R') {
1367 if (-d $m->{file_b}) {
1368 err_dir_to_file("$m->{file_a} => $m->{file_b}");
1369 }
1370 # dir/$file => dir/file/$file
1371 my $dirname = dirname($m->{file_b});
1372 while ($dirname ne File::Spec->curdir) {
1373 if ($dirname ne $m->{file_a}) {
1374 $dirname = dirname($dirname);
1375 next;
1376 }
1377 err_file_to_dir("$m->{file_a} => $m->{file_b}");
1378 }
1379 # baz/zzz => baz (baz is a file)
1380 $dirname = dirname($m->{file_a});
1381 while ($dirname ne File::Spec->curdir) {
1382 if ($dirname ne $m->{file_b}) {
1383 $dirname = dirname($dirname);
1384 next;
1385 }
1386 err_dir_to_file("$m->{file_a} => $m->{file_b}");
1387 }
1388 }
1389 if ($m->{chg} =~ /^(D|R)$/) {
1390 my $t = $1 eq 'D' ? 'file_b' : 'file_a';
1391 $rm_file{ $m->{$t} } = 1;
1392 my $dirname = dirname( $m->{$t} );
1393 my $basename = basename( $m->{$t} );
1394 $rmdir_check{$dirname}->{$basename} = 1;
1395 } elsif ($m->{chg} =~ /^(?:A|C)$/) {
1396 if (-d $m->{file_b}) {
1397 err_dir_to_file($m->{file_b});
1398 }
1399 my $dirname = dirname( $m->{file_b} );
1400 my $basename = basename( $m->{file_b} );
1401 $added_check{$dirname}->{$basename} = 1;
1402 while ($dirname ne File::Spec->curdir) {
1403 if ($rm_file{$dirname}) {
1404 err_file_to_dir($m->{file_b});
1405 }
1406 $dirname = dirname $dirname;
1407 }
1408 }
1409 }
1410 return (\%rmdir_check, \%added_check);
1411
1412 sub err_dir_to_file {
1413 my $file = shift;
1414 print STDERR "Node change from directory to file ",
1415 "is not supported by Subversion: ",$file,"\n";
1416 exit 1;
1417 }
1418 sub err_file_to_dir {
1419 my $file = shift;
1420 print STDERR "Node change from file to directory ",
1421 "is not supported by Subversion: ",$file,"\n";
1422 exit 1;
1423 }
1424 }
1425
1426
1427 sub get_diff {
1428 my ($from, $treeish) = @_;
1429 assert_tree($from);
1430 print "diff-tree $from $treeish\n";
1431 my $pid = open my $diff_fh, '-|';
1432 defined $pid or croak $!;
1433 if ($pid == 0) {
1434 my @diff_tree = qw(git-diff-tree -z -r);
1435 if ($_cp_similarity) {
1436 push @diff_tree, "-C$_cp_similarity";
1437 } else {
1438 push @diff_tree, '-C';
1439 }
1440 push @diff_tree, '--find-copies-harder' if $_find_copies_harder;
1441 push @diff_tree, "-l$_l" if defined $_l;
1442 exec(@diff_tree, $from, $treeish) or croak $!;
1443 }
1444 return parse_diff_tree($diff_fh);
1445 }
1446
1447 sub svn_checkout_tree {
1448 my ($from, $treeish) = @_;
1449 my $mods = get_diff($from->{commit}, $treeish);
1450 return $mods unless (scalar @$mods);
1451 my ($rm, $add) = precommit_check($mods);
1452
1453 my %o = ( D => 1, R => 0, C => -1, A => 3, M => 3, T => 3 );
1454 foreach my $m (sort { $o{$a->{chg}} <=> $o{$b->{chg}} } @$mods) {
1455 if ($m->{chg} eq 'C') {
1456 svn_ensure_parent_path( $m->{file_b} );
1457 sys(qw(svn cp), $m->{file_a}, $m->{file_b});
1458 apply_mod_line_blob($m);
1459 svn_check_prop_executable($m);
1460 } elsif ($m->{chg} eq 'D') {
1461 sys(qw(svn rm --force), $m->{file_b});
1462 } elsif ($m->{chg} eq 'R') {
1463 svn_ensure_parent_path( $m->{file_b} );
1464 sys(qw(svn mv --force), $m->{file_a}, $m->{file_b});
1465 apply_mod_line_blob($m);
1466 svn_check_prop_executable($m);
1467 } elsif ($m->{chg} eq 'M') {
1468 apply_mod_line_blob($m);
1469 svn_check_prop_executable($m);
1470 } elsif ($m->{chg} eq 'T') {
1471 sys(qw(svn rm --force),$m->{file_b});
1472 apply_mod_line_blob($m);
1473 sys(qw(svn add), $m->{file_b});
1474 svn_check_prop_executable($m);
1475 } elsif ($m->{chg} eq 'A') {
1476 svn_ensure_parent_path( $m->{file_b} );
1477 apply_mod_line_blob($m);
1478 sys(qw(svn add), $m->{file_b});
1479 svn_check_prop_executable($m);
1480 } else {
1481 croak "Invalid chg: $m->{chg}\n";
1482 }
1483 }
1484
1485 assert_tree($treeish);
1486 if ($_rmdir) { # remove empty directories
1487 handle_rmdir($rm, $add);
1488 }
1489 assert_tree($treeish);
1490 return $mods;
1491 }
1492
1493 sub libsvn_checkout_tree {
1494 my ($from, $treeish, $ed) = @_;
1495 my $mods = get_diff($from, $treeish);
1496 return $mods unless (scalar @$mods);
1497 my %o = ( D => 1, R => 0, C => -1, A => 3, M => 3, T => 3 );
1498 foreach my $m (sort { $o{$a->{chg}} <=> $o{$b->{chg}} } @$mods) {
1499 my $f = $m->{chg};
1500 if (defined $o{$f}) {
1501 $ed->$f($m, $_q);
1502 } else {
1503 croak "Invalid change type: $f\n";
1504 }
1505 }
1506 $ed->rmdirs($_q) if $_rmdir;
1507 return $mods;
1508 }
1509
1510 # svn ls doesn't work with respect to the current working tree, but what's
1511 # in the repository. There's not even an option for it... *sigh*
1512 # (added files don't show up and removed files remain in the ls listing)
1513 sub svn_ls_current {
1514 my ($dir, $rm, $add) = @_;
1515 chomp(my @ls = safe_qx('svn','ls',$dir));
1516 my @ret = ();
1517 foreach (@ls) {
1518 s#/$##; # trailing slashes are evil
1519 push @ret, $_ unless $rm->{$dir}->{$_};
1520 }
1521 if (exists $add->{$dir}) {
1522 push @ret, keys %{$add->{$dir}};
1523 }
1524 return \@ret;
1525 }
1526
1527 sub handle_rmdir {
1528 my ($rm, $add) = @_;
1529
1530 foreach my $dir (sort {length $b <=> length $a} keys %$rm) {
1531 my $ls = svn_ls_current($dir, $rm, $add);
1532 next if (scalar @$ls);
1533 sys(qw(svn rm --force),$dir);
1534
1535 my $dn = dirname $dir;
1536 $rm->{ $dn }->{ basename $dir } = 1;
1537 $ls = svn_ls_current($dn, $rm, $add);
1538 while (scalar @$ls == 0 && $dn ne File::Spec->curdir) {
1539 sys(qw(svn rm --force),$dn);
1540 $dir = basename $dn;
1541 $dn = dirname $dn;
1542 $rm->{ $dn }->{ $dir } = 1;
1543 $ls = svn_ls_current($dn, $rm, $add);
1544 }
1545 }
1546 }
1547
1548 sub get_commit_message {
1549 my ($commit, $commit_msg) = (@_);
1550 my %log_msg = ( msg => '' );
1551 open my $msg, '>', $commit_msg or croak $!;
1552
1553 chomp(my $type = `git-cat-file -t $commit`);
1554 if ($type eq 'commit' || $type eq 'tag') {
1555 my $pid = open my $msg_fh, '-|';
1556 defined $pid or croak $!;
1557
1558 if ($pid == 0) {
1559 exec('git-cat-file', $type, $commit) or croak $!;
1560 }
1561 my $in_msg = 0;
1562 while (<$msg_fh>) {
1563 if (!$in_msg) {
1564 $in_msg = 1 if (/^\s*$/);
1565 } elsif (/^git-svn-id: /) {
1566 # skip this, we regenerate the correct one
1567 # on re-fetch anyways
1568 } else {
1569 print $msg $_ or croak $!;
1570 }
1571 }
1572 close $msg_fh or croak $?;
1573 }
1574 close $msg or croak $!;
1575
1576 if ($_edit || ($type eq 'tree')) {
1577 my $editor = $ENV{VISUAL} || $ENV{EDITOR} || 'vi';
1578 system($editor, $commit_msg);
1579 }
1580
1581 # file_to_s removes all trailing newlines, so just use chomp() here:
1582 open $msg, '<', $commit_msg or croak $!;
1583 { local $/; chomp($log_msg{msg} = <$msg>); }
1584 close $msg or croak $!;
1585
1586 return \%log_msg;
1587 }
1588
1589 sub set_svn_commit_env {
1590 if (defined $LC_ALL) {
1591 $ENV{LC_ALL} = $LC_ALL;
1592 } else {
1593 delete $ENV{LC_ALL};
1594 }
1595 }
1596
1597 sub svn_commit_tree {
1598 my ($last, $commit) = @_;
1599 my $commit_msg = "$GIT_SVN_DIR/.svn-commit.tmp.$$";
1600 my $log_msg = get_commit_message($commit, $commit_msg);
1601 my ($oneline) = ($log_msg->{msg} =~ /([^\n\r]+)/);
1602 print "Committing $commit: $oneline\n";
1603
1604 set_svn_commit_env();
1605 my @ci_output = safe_qx(qw(svn commit -F),$commit_msg);
1606 $ENV{LC_ALL} = 'C';
1607 unlink $commit_msg;
1608 my ($committed) = ($ci_output[$#ci_output] =~ /(\d+)/);
1609 if (!defined $committed) {
1610 my $out = join("\n",@ci_output);
1611 print STDERR "W: Trouble parsing \`svn commit' output:\n\n",
1612 $out, "\n\nAssuming English locale...";
1613 ($committed) = ($out =~ /^Committed revision \d+\./sm);
1614 defined $committed or die " FAILED!\n",
1615 "Commit output failed to parse committed revision!\n",
1616 print STDERR " OK\n";
1617 }
1618
1619 my @svn_up = qw(svn up);
1620 push @svn_up, '--ignore-externals' unless $_no_ignore_ext;
1621 if ($_optimize_commits && ($committed == ($last->{revision} + 1))) {
1622 push @svn_up, "-r$committed";
1623 sys(@svn_up);
1624 my $info = svn_info('.');
1625 my $date = $info->{'Last Changed Date'} or die "Missing date\n";
1626 if ($info->{'Last Changed Rev'} != $committed) {
1627 croak "$info->{'Last Changed Rev'} != $committed\n"
1628 }
1629 my ($Y,$m,$d,$H,$M,$S,$tz) = ($date =~
1630 /(\d{4})\-(\d\d)\-(\d\d)\s
1631 (\d\d)\:(\d\d)\:(\d\d)\s([\-\+]\d+)/x)
1632 or croak "Failed to parse date: $date\n";
1633 $log_msg->{date} = "$tz $Y-$m-$d $H:$M:$S";
1634 $log_msg->{author} = $info->{'Last Changed Author'};
1635 $log_msg->{revision} = $committed;
1636 $log_msg->{msg} .= "\n";
1637 $log_msg->{parents} = [ $last->{commit} ];
1638 $log_msg->{commit} = git_commit($log_msg, $commit);
1639 return $log_msg;
1640 }
1641 # resync immediately
1642 push @svn_up, "-r$last->{revision}";
1643 sys(@svn_up);
1644 return fetch("$committed=$commit");
1645 }
1646
1647 sub rev_list_raw {
1648 my (@args) = @_;
1649 my $pid = open my $fh, '-|';
1650 defined $pid or croak $!;
1651 if (!$pid) {
1652 exec(qw/git-rev-list --pretty=raw/, @args) or croak $!;
1653 }
1654 return { fh => $fh, t => { } };
1655 }
1656
1657 sub next_rev_list_entry {
1658 my $rl = shift;
1659 my $fh = $rl->{fh};
1660 my $x = $rl->{t};
1661 while (<$fh>) {
1662 if (/^commit ($sha1)$/o) {
1663 if ($x->{c}) {
1664 $rl->{t} = { c => $1 };
1665 return $x;
1666 } else {
1667 $x->{c} = $1;
1668 }
1669 } elsif (/^parent ($sha1)$/o) {
1670 $x->{p}->{$1} = 1;
1671 } elsif (s/^ //) {
1672 $x->{m} ||= '';
1673 $x->{m} .= $_;
1674 }
1675 }
1676 return ($x != $rl->{t}) ? $x : undef;
1677 }
1678
1679 # read the entire log into a temporary file (which is removed ASAP)
1680 # and store the file handle + parser state
1681 sub svn_log_raw {
1682 my (@log_args) = @_;
1683 my $log_fh = IO::File->new_tmpfile or croak $!;
1684 my $pid = fork;
1685 defined $pid or croak $!;
1686 if (!$pid) {
1687 open STDOUT, '>&', $log_fh or croak $!;
1688 exec (qw(svn log), @log_args) or croak $!
1689 }
1690 waitpid $pid, 0;
1691 croak $? if $?;
1692 seek $log_fh, 0, 0 or croak $!;
1693 return { state => 'sep', fh => $log_fh };
1694 }
1695
1696 sub next_log_entry {
1697 my $log = shift; # retval of svn_log_raw()
1698 my $ret = undef;
1699 my $fh = $log->{fh};
1700
1701 while (<$fh>) {
1702 chomp;
1703 if (/^\-{72}$/) {
1704 if ($log->{state} eq 'msg') {
1705 if ($ret->{lines}) {
1706 $ret->{msg} .= $_."\n";
1707 unless(--$ret->{lines}) {
1708 $log->{state} = 'sep';
1709 }
1710 } else {
1711 croak "Log parse error at: $_\n",
1712 $ret->{revision},
1713 "\n";
1714 }
1715 next;
1716 }
1717 if ($log->{state} ne 'sep') {
1718 croak "Log parse error at: $_\n",
1719 "state: $log->{state}\n",
1720 $ret->{revision},
1721 "\n";
1722 }
1723 $log->{state} = 'rev';
1724
1725 # if we have an empty log message, put something there:
1726 if ($ret) {
1727 $ret->{msg} ||= "\n";
1728 delete $ret->{lines};
1729 return $ret;
1730 }
1731 next;
1732 }
1733 if ($log->{state} eq 'rev' && s/^r(\d+)\s*\|\s*//) {
1734 my $rev = $1;
1735 my ($author, $date, $lines) = split(/\s*\|\s*/, $_, 3);
1736 ($lines) = ($lines =~ /(\d+)/);
1737 my ($Y,$m,$d,$H,$M,$S,$tz) = ($date =~
1738 /(\d{4})\-(\d\d)\-(\d\d)\s
1739 (\d\d)\:(\d\d)\:(\d\d)\s([\-\+]\d+)/x)
1740 or croak "Failed to parse date: $date\n";
1741 $ret = { revision => $rev,
1742 date => "$tz $Y-$m-$d $H:$M:$S",
1743 author => $author,
1744 lines => $lines,
1745 msg => '' };
1746 if (defined $_authors && ! defined $users{$author}) {
1747 die "Author: $author not defined in ",
1748 "$_authors file\n";
1749 }
1750 $log->{state} = 'msg_start';
1751 next;
1752 }
1753 # skip the first blank line of the message:
1754 if ($log->{state} eq 'msg_start' && /^$/) {
1755 $log->{state} = 'msg';
1756 } elsif ($log->{state} eq 'msg') {
1757 if ($ret->{lines}) {
1758 $ret->{msg} .= $_."\n";
1759 unless (--$ret->{lines}) {
1760 $log->{state} = 'sep';
1761 }
1762 } else {
1763 croak "Log parse error at: $_\n",
1764 $ret->{revision},"\n";
1765 }
1766 }
1767 }
1768 return $ret;
1769 }
1770
1771 sub svn_info {
1772 my $url = shift || $SVN_URL;
1773
1774 my $pid = open my $info_fh, '-|';
1775 defined $pid or croak $!;
1776
1777 if ($pid == 0) {
1778 exec(qw(svn info),$url) or croak $!;
1779 }
1780
1781 my $ret = {};
1782 # only single-lines seem to exist in svn info output
1783 while (<$info_fh>) {
1784 chomp $_;
1785 if (m#^([^:]+)\s*:\s*(\S.*)$#) {
1786 $ret->{$1} = $2;
1787 push @{$ret->{-order}}, $1;
1788 }
1789 }
1790 close $info_fh or croak $?;
1791 return $ret;
1792 }
1793
1794 sub sys { system(@_) == 0 or croak $? }
1795
1796 sub do_update_index {
1797 my ($z_cmd, $cmd, $no_text_base) = @_;
1798
1799 my $z = open my $p, '-|';
1800 defined $z or croak $!;
1801 unless ($z) { exec @$z_cmd or croak $! }
1802
1803 my $pid = open my $ui, '|-';
1804 defined $pid or croak $!;
1805 unless ($pid) {
1806 exec('git-update-index',"--$cmd",'-z','--stdin') or croak $!;
1807 }
1808 local $/ = "\0";
1809 while (my $x = <$p>) {
1810 chomp $x;
1811 if (!$no_text_base && lstat $x && ! -l _ &&
1812 svn_propget_base('svn:keywords', $x)) {
1813 my $mode = -x _ ? 0755 : 0644;
1814 my ($v,$d,$f) = File::Spec->splitpath($x);
1815 my $tb = File::Spec->catfile($d, '.svn', 'tmp',
1816 'text-base',"$f.svn-base");
1817 $tb =~ s#^/##;
1818 unless (-f $tb) {
1819 $tb = File::Spec->catfile($d, '.svn',
1820 'text-base',"$f.svn-base");
1821 $tb =~ s#^/##;
1822 }
1823 my @s = stat($x);
1824 unlink $x or croak $!;
1825 copy($tb, $x);
1826 chmod(($mode &~ umask), $x) or croak $!;
1827 utime $s[8], $s[9], $x;
1828 }
1829 print $ui $x,"\0";
1830 }
1831 close $ui or croak $?;
1832 }
1833
1834 sub index_changes {
1835 return if $_use_lib;
1836
1837 if (!-f "$GIT_SVN_DIR/info/exclude") {
1838 open my $fd, '>>', "$GIT_SVN_DIR/info/exclude" or croak $!;
1839 print $fd '.svn',"\n";
1840 close $fd or croak $!;
1841 }
1842 my $no_text_base = shift;
1843 do_update_index([qw/git-diff-files --name-only -z/],
1844 'remove',
1845 $no_text_base);
1846 do_update_index([qw/git-ls-files -z --others/,
1847 "--exclude-from=$GIT_SVN_DIR/info/exclude"],
1848 'add',
1849 $no_text_base);
1850 }
1851
1852 sub s_to_file {
1853 my ($str, $file, $mode) = @_;
1854 open my $fd,'>',$file or croak $!;
1855 print $fd $str,"\n" or croak $!;
1856 close $fd or croak $!;
1857 chmod ($mode &~ umask, $file) if (defined $mode);
1858 }
1859
1860 sub file_to_s {
1861 my $file = shift;
1862 open my $fd,'<',$file or croak "$!: file: $file\n";
1863 local $/;
1864 my $ret = <$fd>;
1865 close $fd or croak $!;
1866 $ret =~ s/\s*$//s;
1867 return $ret;
1868 }
1869
1870 sub assert_revision_unknown {
1871 my $r = shift;
1872 if (my $c = revdb_get($REVDB, $r)) {
1873 croak "$r = $c already exists! Why are we refetching it?";
1874 }
1875 }
1876
1877 sub trees_eq {
1878 my ($x, $y) = @_;
1879 my @x = safe_qx('git-cat-file','commit',$x);
1880 my @y = safe_qx('git-cat-file','commit',$y);
1881 if (($y[0] ne $x[0]) || $x[0] !~ /^tree $sha1\n$/
1882 || $y[0] !~ /^tree $sha1\n$/) {
1883 print STDERR "Trees not equal: $y[0] != $x[0]\n";
1884 return 0
1885 }
1886 return 1;
1887 }
1888
1889 sub git_commit {
1890 my ($log_msg, @parents) = @_;
1891 assert_revision_unknown($log_msg->{revision});
1892 map_tree_joins() if (@_branch_from && !%tree_map);
1893
1894 my (@tmp_parents, @exec_parents, %seen_parent);
1895 if (my $lparents = $log_msg->{parents}) {
1896 @tmp_parents = @$lparents
1897 }
1898 # commit parents can be conditionally bound to a particular
1899 # svn revision via: "svn_revno=commit_sha1", filter them out here:
1900 foreach my $p (@parents) {
1901 next unless defined $p;
1902 if ($p =~ /^(\d+)=($sha1_short)$/o) {
1903 if ($1 == $log_msg->{revision}) {
1904 push @tmp_parents, $2;
1905 }
1906 } else {
1907 push @tmp_parents, $p if $p =~ /$sha1_short/o;
1908 }
1909 }
1910 my $tree = $log_msg->{tree};
1911 if (!defined $tree) {
1912 my $index = set_index($GIT_SVN_INDEX);
1913 index_changes();
1914 chomp($tree = `git-write-tree`);
1915 croak $? if $?;
1916 restore_index($index);
1917 }
1918
1919 # just in case we clobber the existing ref, we still want that ref
1920 # as our parent:
1921 if (my $cur = eval { file_to_s("$GIT_DIR/refs/remotes/$GIT_SVN") }) {
1922 push @tmp_parents, $cur;
1923 }
1924
1925 if (exists $tree_map{$tree}) {
1926 foreach my $p (@{$tree_map{$tree}}) {
1927 my $skip;
1928 foreach (@tmp_parents) {
1929 # see if a common parent is found
1930 my $mb = eval {
1931 safe_qx('git-merge-base', $_, $p)
1932 };
1933 next if ($@ || $?);
1934 $skip = 1;
1935 last;
1936 }
1937 next if $skip;
1938 my ($url_p, $r_p, $uuid_p) = cmt_metadata($p);
1939 next if (($SVN_UUID eq $uuid_p) &&
1940 ($log_msg->{revision} > $r_p));
1941 next if (defined $url_p && defined $SVN_URL &&
1942 ($SVN_UUID eq $uuid_p) &&
1943 ($url_p eq $SVN_URL));
1944 push @tmp_parents, $p;
1945 }
1946 }
1947 foreach (@tmp_parents) {
1948 next if $seen_parent{$_};
1949 $seen_parent{$_} = 1;
1950 push @exec_parents, $_;
1951 # MAXPARENT is defined to 16 in commit-tree.c:
1952 last if @exec_parents > 16;
1953 }
1954
1955 set_commit_env($log_msg);
1956 my @exec = ('git-commit-tree', $tree);
1957 push @exec, '-p', $_ foreach @exec_parents;
1958 defined(my $pid = open3(my $msg_fh, my $out_fh, '>&STDERR', @exec))
1959 or croak $!;
1960 print $msg_fh $log_msg->{msg} or croak $!;
1961 unless ($_no_metadata) {
1962 print $msg_fh "\ngit-svn-id: $SVN_URL\@$log_msg->{revision}",
1963 " $SVN_UUID\n" or croak $!;
1964 }
1965 $msg_fh->flush == 0 or croak $!;
1966 close $msg_fh or croak $!;
1967 chomp(my $commit = do { local $/; <$out_fh> });
1968 close $out_fh or croak $!;
1969 waitpid $pid, 0;
1970 croak $? if $?;
1971 if ($commit !~ /^$sha1$/o) {
1972 die "Failed to commit, invalid sha1: $commit\n";
1973 }
1974 sys('git-update-ref',"refs/remotes/$GIT_SVN",$commit);
1975 revdb_set($REVDB, $log_msg->{revision}, $commit);
1976
1977 # this output is read via pipe, do not change:
1978 print "r$log_msg->{revision} = $commit\n";
1979 check_repack();
1980 return $commit;
1981 }
1982
1983 sub check_repack {
1984 if ($_repack && (--$_repack_nr == 0)) {
1985 $_repack_nr = $_repack;
1986 sys("git repack $_repack_flags");
1987 }
1988 }
1989
1990 sub set_commit_env {
1991 my ($log_msg) = @_;
1992 my $author = $log_msg->{author};
1993 if (!defined $author || length $author == 0) {
1994 $author = '(no author)';
1995 }
1996 my ($name,$email) = defined $users{$author} ? @{$users{$author}}
1997 : ($author,"$author\@$SVN_UUID");
1998 $ENV{GIT_AUTHOR_NAME} = $ENV{GIT_COMMITTER_NAME} = $name;
1999 $ENV{GIT_AUTHOR_EMAIL} = $ENV{GIT_COMMITTER_EMAIL} = $email;
2000 $ENV{GIT_AUTHOR_DATE} = $ENV{GIT_COMMITTER_DATE} = $log_msg->{date};
2001 }
2002
2003 sub apply_mod_line_blob {
2004 my $m = shift;
2005 if ($m->{mode_b} =~ /^120/) {
2006 blob_to_symlink($m->{sha1_b}, $m->{file_b});
2007 } else {
2008 blob_to_file($m->{sha1_b}, $m->{file_b});
2009 }
2010 }
2011
2012 sub blob_to_symlink {
2013 my ($blob, $link) = @_;
2014 defined $link or croak "\$link not defined!\n";
2015 croak "Not a sha1: $blob\n" unless $blob =~ /^$sha1$/o;
2016 if (-l $link || -f _) {
2017 unlink $link or croak $!;
2018 }
2019
2020 my $dest = `git-cat-file blob $blob`; # no newline, so no chomp
2021 symlink $dest, $link or croak $!;
2022 }
2023
2024 sub blob_to_file {
2025 my ($blob, $file) = @_;
2026 defined $file or croak "\$file not defined!\n";
2027 croak "Not a sha1: $blob\n" unless $blob =~ /^$sha1$/o;
2028 if (-l $file || -f _) {
2029 unlink $file or croak $!;
2030 }
2031
2032 open my $blob_fh, '>', $file or croak "$!: $file\n";
2033 my $pid = fork;
2034 defined $pid or croak $!;
2035
2036 if ($pid == 0) {
2037 open STDOUT, '>&', $blob_fh or croak $!;
2038 exec('git-cat-file','blob',$blob) or croak $!;
2039 }
2040 waitpid $pid, 0;
2041 croak $? if $?;
2042
2043 close $blob_fh or croak $!;
2044 }
2045
2046 sub safe_qx {
2047 my $pid = open my $child, '-|';
2048 defined $pid or croak $!;
2049 if ($pid == 0) {
2050 exec(@_) or croak $!;
2051 }
2052 my @ret = (<$child>);
2053 close $child or croak $?;
2054 die $? if $?; # just in case close didn't error out
2055 return wantarray ? @ret : join('',@ret);
2056 }
2057
2058 sub svn_compat_check {
2059 if ($_follow_parent) {
2060 print STDERR 'E: --follow-parent functionality is only ',
2061 "available when SVN libraries are used\n";
2062 exit 1;
2063 }
2064 my @co_help = safe_qx(qw(svn co -h));
2065 unless (grep /ignore-externals/,@co_help) {
2066 print STDERR "W: Installed svn version does not support ",
2067 "--ignore-externals\n";
2068 $_no_ignore_ext = 1;
2069 }
2070 if (grep /usage: checkout URL\[\@REV\]/,@co_help) {
2071 $_svn_co_url_revs = 1;
2072 }
2073 if (grep /\[TARGET\[\@REV\]\.\.\.\]/, `svn propget -h`) {
2074 $_svn_pg_peg_revs = 1;
2075 }
2076
2077 # I really, really hope nobody hits this...
2078 unless (grep /stop-on-copy/, (safe_qx(qw(svn log -h)))) {
2079 print STDERR <<'';
2080 W: The installed svn version does not support the --stop-on-copy flag in
2081 the log command.
2082 Lets hope the directory you're tracking is not a branch or tag
2083 and was never moved within the repository...
2084
2085 $_no_stop_copy = 1;
2086 }
2087 }
2088
2089 # *sigh*, new versions of svn won't honor -r<rev> without URL@<rev>,
2090 # (and they won't honor URL@<rev> without -r<rev>, too!)
2091 sub svn_cmd_checkout {
2092 my ($url, $rev, $dir) = @_;
2093 my @cmd = ('svn','co', "-r$rev");
2094 push @cmd, '--ignore-externals' unless $_no_ignore_ext;
2095 $url .= "\@$rev" if $_svn_co_url_revs;
2096 sys(@cmd, $url, $dir);
2097 }
2098
2099 sub check_upgrade_needed {
2100 if (!-r $REVDB) {
2101 -d $GIT_SVN_DIR or mkpath([$GIT_SVN_DIR]);
2102 open my $fh, '>>',$REVDB or croak $!;
2103 close $fh;
2104 }
2105 my $old = eval {
2106 my $pid = open my $child, '-|';
2107 defined $pid or croak $!;
2108 if ($pid == 0) {
2109 close STDERR;
2110 exec('git-rev-parse',"$GIT_SVN-HEAD") or croak $!;
2111 }
2112 my @ret = (<$child>);
2113 close $child or croak $?;
2114 die $? if $?; # just in case close didn't error out
2115 return wantarray ? @ret : join('',@ret);
2116 };
2117 return unless $old;
2118 my $head = eval { safe_qx('git-rev-parse',"refs/remotes/$GIT_SVN") };
2119 if ($@ || !$head) {
2120 print STDERR "Please run: $0 rebuild --upgrade\n";
2121 exit 1;
2122 }
2123 }
2124
2125 # fills %tree_map with a reverse mapping of trees to commits. Useful
2126 # for finding parents to commit on.
2127 sub map_tree_joins {
2128 my %seen;
2129 foreach my $br (@_branch_from) {
2130 my $pid = open my $pipe, '-|';
2131 defined $pid or croak $!;
2132 if ($pid == 0) {
2133 exec(qw(git-rev-list --topo-order --pretty=raw), $br)
2134 or croak $!;
2135 }
2136 while (<$pipe>) {
2137 if (/^commit ($sha1)$/o) {
2138 my $commit = $1;
2139
2140 # if we've seen a commit,
2141 # we've seen its parents
2142 last if $seen{$commit};
2143 my ($tree) = (<$pipe> =~ /^tree ($sha1)$/o);
2144 unless (defined $tree) {
2145 die "Failed to parse commit $commit\n";
2146 }
2147 push @{$tree_map{$tree}}, $commit;
2148 $seen{$commit} = 1;
2149 }
2150 }
2151 close $pipe; # we could be breaking the pipe early
2152 }
2153 }
2154
2155 sub load_all_refs {
2156 if (@_branch_from) {
2157 print STDERR '--branch|-b parameters are ignored when ',
2158 "--branch-all-refs|-B is passed\n";
2159 }
2160
2161 # don't worry about rev-list on non-commit objects/tags,
2162 # it shouldn't blow up if a ref is a blob or tree...
2163 chomp(@_branch_from = `git-rev-parse --symbolic --all`);
2164 }
2165
2166 # '<svn username> = real-name <email address>' mapping based on git-svnimport:
2167 sub load_authors {
2168 open my $authors, '<', $_authors or die "Can't open $_authors $!\n";
2169 while (<$authors>) {
2170 chomp;
2171 next unless /^(\S+?)\s*=\s*(.+?)\s*<(.+)>\s*$/;
2172 my ($user, $name, $email) = ($1, $2, $3);
2173 $users{$user} = [$name, $email];
2174 }
2175 close $authors or croak $!;
2176 }
2177
2178 sub rload_authors {
2179 open my $authors, '<', $_authors or die "Can't open $_authors $!\n";
2180 while (<$authors>) {
2181 chomp;
2182 next unless /^(\S+?)\s*=\s*(.+?)\s*<(.+)>\s*$/;
2183 my ($user, $name, $email) = ($1, $2, $3);
2184 $rusers{"$name <$email>"} = $user;
2185 }
2186 close $authors or croak $!;
2187 }
2188
2189 sub svn_propget_base {
2190 my ($p, $f) = @_;
2191 $f .= '@BASE' if $_svn_pg_peg_revs;
2192 return safe_qx(qw/svn propget/, $p, $f);
2193 }
2194
2195 sub git_svn_each {
2196 my $sub = shift;
2197 foreach (`git-rev-parse --symbolic --all`) {
2198 next unless s#^refs/remotes/##;
2199 chomp $_;
2200 next unless -f "$GIT_DIR/svn/$_/info/url";
2201 &$sub($_);
2202 }
2203 }
2204
2205 sub migrate_revdb {
2206 git_svn_each(sub {
2207 my $id = shift;
2208 defined(my $pid = fork) or croak $!;
2209 if (!$pid) {
2210 $GIT_SVN = $ENV{GIT_SVN_ID} = $id;
2211 init_vars();
2212 exit 0 if -r $REVDB;
2213 print "Upgrading svn => git mapping...\n";
2214 -d $GIT_SVN_DIR or mkpath([$GIT_SVN_DIR]);
2215 open my $fh, '>>',$REVDB or croak $!;
2216 close $fh;
2217 rebuild();
2218 print "Done upgrading. You may now delete the ",
2219 "deprecated $GIT_SVN_DIR/revs directory\n";
2220 exit 0;
2221 }
2222 waitpid $pid, 0;
2223 croak $? if $?;
2224 });
2225 }
2226
2227 sub migration_check {
2228 migrate_revdb() unless (-e $REVDB);
2229 return if (-d "$GIT_DIR/svn" || !-d $GIT_DIR);
2230 print "Upgrading repository...\n";
2231 unless (-d "$GIT_DIR/svn") {
2232 mkdir "$GIT_DIR/svn" or croak $!;
2233 }
2234 print "Data from a previous version of git-svn exists, but\n\t",
2235 "$GIT_SVN_DIR\n\t(required for this version ",
2236 "($VERSION) of git-svn) does not.\n";
2237
2238 foreach my $x (`git-rev-parse --symbolic --all`) {
2239 next unless $x =~ s#^refs/remotes/##;
2240 chomp $x;
2241 next unless -f "$GIT_DIR/$x/info/url";
2242 my $u = eval { file_to_s("$GIT_DIR/$x/info/url") };
2243 next unless $u;
2244 my $dn = dirname("$GIT_DIR/svn/$x");
2245 mkpath([$dn]) unless -d $dn;
2246 rename "$GIT_DIR/$x", "$GIT_DIR/svn/$x" or croak "$!: $x";
2247 }
2248 migrate_revdb() if (-d $GIT_SVN_DIR && !-w $REVDB);
2249 print "Done upgrading.\n";
2250 }
2251
2252 sub find_rev_before {
2253 my ($r, $id, $eq_ok) = @_;
2254 my $f = "$GIT_DIR/svn/$id/.rev_db";
2255 return (undef,undef) unless -r $f;
2256 --$r unless $eq_ok;
2257 while ($r > 0) {
2258 if (my $c = revdb_get($f, $r)) {
2259 return ($r, $c);
2260 }
2261 --$r;
2262 }
2263 return (undef, undef);
2264 }
2265
2266 sub init_vars {
2267 $GIT_SVN ||= $ENV{GIT_SVN_ID} || 'git-svn';
2268 $GIT_SVN_DIR = "$GIT_DIR/svn/$GIT_SVN";
2269 $REVDB = "$GIT_SVN_DIR/.rev_db";
2270 $GIT_SVN_INDEX = "$GIT_SVN_DIR/index";
2271 $SVN_URL = undef;
2272 $SVN_WC = "$GIT_SVN_DIR/tree";
2273 %tree_map = ();
2274 }
2275
2276 # convert GetOpt::Long specs for use by git-repo-config
2277 sub read_repo_config {
2278 return unless -d $GIT_DIR;
2279 my $opts = shift;
2280 foreach my $o (keys %$opts) {
2281 my $v = $opts->{$o};
2282 my ($key) = ($o =~ /^([a-z\-]+)/);
2283 $key =~ s/-//g;
2284 my $arg = 'git-repo-config';
2285 $arg .= ' --int' if ($o =~ /[:=]i$/);
2286 $arg .= ' --bool' if ($o !~ /[:=][sfi]$/);
2287 if (ref $v eq 'ARRAY') {
2288 chomp(my @tmp = `$arg --get-all svn.$key`);
2289 @$v = @tmp if @tmp;
2290 } else {
2291 chomp(my $tmp = `$arg --get svn.$key`);
2292 if ($tmp && !($arg =~ / --bool / && $tmp eq 'false')) {
2293 $$v = $tmp;
2294 }
2295 }
2296 }
2297 }
2298
2299 sub set_default_vals {
2300 if (defined $_repack) {
2301 $_repack = 1000 if ($_repack <= 0);
2302 $_repack_nr = $_repack;
2303 $_repack_flags ||= '-d';
2304 }
2305 }
2306
2307 sub read_grafts {
2308 my $gr_file = shift;
2309 my ($grafts, $comments) = ({}, {});
2310 if (open my $fh, '<', $gr_file) {
2311 my @tmp;
2312 while (<$fh>) {
2313 if (/^($sha1)\s+/) {
2314 my $c = $1;
2315 if (@tmp) {
2316 @{$comments->{$c}} = @tmp;
2317 @tmp = ();
2318 }
2319 foreach my $p (split /\s+/, $_) {
2320 $grafts->{$c}->{$p} = 1;
2321 }
2322 } else {
2323 push @tmp, $_;
2324 }
2325 }
2326 close $fh or croak $!;
2327 @{$comments->{'END'}} = @tmp if @tmp;
2328 }
2329 return ($grafts, $comments);
2330 }
2331
2332 sub write_grafts {
2333 my ($grafts, $comments, $gr_file) = @_;
2334
2335 open my $fh, '>', $gr_file or croak $!;
2336 foreach my $c (sort keys %$grafts) {
2337 if ($comments->{$c}) {
2338 print $fh $_ foreach @{$comments->{$c}};
2339 }
2340 my $p = $grafts->{$c};
2341 my %x; # real parents
2342 delete $p->{$c}; # commits are not self-reproducing...
2343 my $pid = open my $ch, '-|';
2344 defined $pid or croak $!;
2345 if (!$pid) {
2346 exec(qw/git-cat-file commit/, $c) or croak $!;
2347 }
2348 while (<$ch>) {
2349 if (/^parent ($sha1)/) {
2350 $x{$1} = $p->{$1} = 1;
2351 } else {
2352 last unless /^\S/;
2353 }
2354 }
2355 close $ch; # breaking the pipe
2356
2357 # if real parents are the only ones in the grafts, drop it
2358 next if join(' ',sort keys %$p) eq join(' ',sort keys %x);
2359
2360 my (@ip, @jp, $mb);
2361 my %del = %x;
2362 @ip = @jp = keys %$p;
2363 foreach my $i (@ip) {
2364 next if $del{$i} || $p->{$i} == 2;
2365 foreach my $j (@jp) {
2366 next if $i eq $j || $del{$j} || $p->{$j} == 2;
2367 $mb = eval { safe_qx('git-merge-base',$i,$j) };
2368 next unless $mb;
2369 chomp $mb;
2370 next if $x{$mb};
2371 if ($mb eq $j) {
2372 delete $p->{$i};
2373 $del{$i} = 1;
2374 } elsif ($mb eq $i) {
2375 delete $p->{$j};
2376 $del{$j} = 1;
2377 }
2378 }
2379 }
2380
2381 # if real parents are the only ones in the grafts, drop it
2382 next if join(' ',sort keys %$p) eq join(' ',sort keys %x);
2383
2384 print $fh $c, ' ', join(' ', sort keys %$p),"\n";
2385 }
2386 if ($comments->{'END'}) {
2387 print $fh $_ foreach @{$comments->{'END'}};
2388 }
2389 close $fh or croak $!;
2390 }
2391
2392 sub read_url_paths_all {
2393 my ($l_map, $pfx, $p) = @_;
2394 my @dir;
2395 foreach (<$p/*>) {
2396 if (-r "$_/info/url") {
2397 $pfx .= '/' if $pfx && $pfx !~ m!/$!;
2398 my $id = $pfx . basename $_;
2399 my $url = file_to_s("$_/info/url");
2400 my ($u, $p) = repo_path_split($url);
2401 $l_map->{$u}->{$p} = $id;
2402 } elsif (-d $_) {
2403 push @dir, $_;
2404 }
2405 }
2406 foreach (@dir) {
2407 my $x = $_;
2408 $x =~ s!^\Q$GIT_DIR\E/svn/!!o;
2409 read_url_paths_all($l_map, $x, $_);
2410 }
2411 }
2412
2413 # this one only gets ids that have been imported, not new ones
2414 sub read_url_paths {
2415 my $l_map = {};
2416 git_svn_each(sub { my $x = shift;
2417 my $url = file_to_s("$GIT_DIR/svn/$x/info/url");
2418 my ($u, $p) = repo_path_split($url);
2419 $l_map->{$u}->{$p} = $x;
2420 });
2421 return $l_map;
2422 }
2423
2424 sub extract_metadata {
2425 my $id = shift or return (undef, undef, undef);
2426 my ($url, $rev, $uuid) = ($id =~ /^git-svn-id:\s(\S+?)\@(\d+)
2427 \s([a-f\d\-]+)$/x);
2428 if (!$rev || !$uuid || !$url) {
2429 # some of the original repositories I made had
2430 # identifiers like this:
2431 ($rev, $uuid) = ($id =~/^git-svn-id:\s(\d+)\@([a-f\d\-]+)/);
2432 }
2433 return ($url, $rev, $uuid);
2434 }
2435
2436 sub cmt_metadata {
2437 return extract_metadata((grep(/^git-svn-id: /,
2438 safe_qx(qw/git-cat-file commit/, shift)))[-1]);
2439 }
2440
2441 sub get_commit_time {
2442 my $cmt = shift;
2443 defined(my $pid = open my $fh, '-|') or croak $!;
2444 if (!$pid) {
2445 exec qw/git-rev-list --pretty=raw -n1/, $cmt or croak $!;
2446 }
2447 while (<$fh>) {
2448 /^committer\s(?:.+) (\d+) ([\-\+]?\d+)$/ or next;
2449 my ($s, $tz) = ($1, $2);
2450 if ($tz =~ s/^\+//) {
2451 $s += tz_to_s_offset($tz);
2452 } elsif ($tz =~ s/^\-//) {
2453 $s -= tz_to_s_offset($tz);
2454 }
2455 close $fh;
2456 return $s;
2457 }
2458 die "Can't get commit time for commit: $cmt\n";
2459 }
2460
2461 sub tz_to_s_offset {
2462 my ($tz) = @_;
2463 $tz =~ s/(\d\d)$//;
2464 return ($1 * 60) + ($tz * 3600);
2465 }
2466
2467 sub setup_pager { # translated to Perl from pager.c
2468 return unless (-t *STDOUT);
2469 my $pager = $ENV{PAGER};
2470 if (!defined $pager) {
2471 $pager = 'less';
2472 } elsif (length $pager == 0 || $pager eq 'cat') {
2473 return;
2474 }
2475 pipe my $rfd, my $wfd or return;
2476 defined(my $pid = fork) or croak $!;
2477 if (!$pid) {
2478 open STDOUT, '>&', $wfd or croak $!;
2479 return;
2480 }
2481 open STDIN, '<&', $rfd or croak $!;
2482 $ENV{LESS} ||= '-S';
2483 exec $pager or croak "Can't run pager: $!\n";;
2484 }
2485
2486 sub get_author_info {
2487 my ($dest, $author, $t, $tz) = @_;
2488 $author =~ s/(?:^\s*|\s*$)//g;
2489 $dest->{a_raw} = $author;
2490 my $_a;
2491 if ($_authors) {
2492 $_a = $rusers{$author} || undef;
2493 }
2494 if (!$_a) {
2495 ($_a) = ($author =~ /<([^>]+)\@[^>]+>$/);
2496 }
2497 $dest->{t} = $t;
2498 $dest->{tz} = $tz;
2499 $dest->{a} = $_a;
2500 # Date::Parse isn't in the standard Perl distro :(
2501 if ($tz =~ s/^\+//) {
2502 $t += tz_to_s_offset($tz);
2503 } elsif ($tz =~ s/^\-//) {
2504 $t -= tz_to_s_offset($tz);
2505 }
2506 $dest->{t_utc} = $t;
2507 }
2508
2509 sub process_commit {
2510 my ($c, $r_min, $r_max, $defer) = @_;
2511 if (defined $r_min && defined $r_max) {
2512 if ($r_min == $c->{r} && $r_min == $r_max) {
2513 show_commit($c);
2514 return 0;
2515 }
2516 return 1 if $r_min == $r_max;
2517 if ($r_min < $r_max) {
2518 # we need to reverse the print order
2519 return 0 if (defined $_limit && --$_limit < 0);
2520 push @$defer, $c;
2521 return 1;
2522 }
2523 if ($r_min != $r_max) {
2524 return 1 if ($r_min < $c->{r});
2525 return 1 if ($r_max > $c->{r});
2526 }
2527 }
2528 return 0 if (defined $_limit && --$_limit < 0);
2529 show_commit($c);
2530 return 1;
2531 }
2532
2533 sub show_commit {
2534 my $c = shift;
2535 if ($_oneline) {
2536 my $x = "\n";
2537 if (my $l = $c->{l}) {
2538 while ($l->[0] =~ /^\s*$/) { shift @$l }
2539 $x = $l->[0];
2540 }
2541 $_l_fmt ||= 'A' . length($c->{r});
2542 print 'r',pack($_l_fmt, $c->{r}),' | ';
2543 print "$c->{c} | " if $_show_commit;
2544 print $x;
2545 } else {
2546 show_commit_normal($c);
2547 }
2548 }
2549
2550 sub show_commit_normal {
2551 my ($c) = @_;
2552 print '-' x72, "\nr$c->{r} | ";
2553 print "$c->{c} | " if $_show_commit;
2554 print "$c->{a} | ", strftime("%Y-%m-%d %H:%M:%S %z (%a, %d %b %Y)",
2555 localtime($c->{t_utc})), ' | ';
2556 my $nr_line = 0;
2557
2558 if (my $l = $c->{l}) {
2559 while ($l->[$#$l] eq "\n" && $l->[($#$l - 1)] eq "\n") {
2560 pop @$l;
2561 }
2562 $nr_line = scalar @$l;
2563 if (!$nr_line) {
2564 print "1 line\n\n\n";
2565 } else {
2566 if ($nr_line == 1) {
2567 $nr_line = '1 line';
2568 } else {
2569 $nr_line .= ' lines';
2570 }
2571 print $nr_line, "\n\n";
2572 print $_ foreach @$l;
2573 }
2574 } else {
2575 print "1 line\n\n";
2576
2577 }
2578 foreach my $x (qw/raw diff/) {
2579 if ($c->{$x}) {
2580 print "\n";
2581 print $_ foreach @{$c->{$x}}
2582 }
2583 }
2584 }
2585
2586 sub libsvn_load {
2587 return unless $_use_lib;
2588 $_use_lib = eval {
2589 require SVN::Core;
2590 if ($SVN::Core::VERSION lt '1.1.0') {
2591 die "Need SVN::Core 1.1.0 or better ",
2592 "(got $SVN::Core::VERSION) ",
2593 "Falling back to command-line svn\n";
2594 }
2595 require SVN::Ra;
2596 require SVN::Delta;
2597 push @SVN::Git::Editor::ISA, 'SVN::Delta::Editor';
2598 my $kill_stupid_warnings = $SVN::Node::none.$SVN::Node::file.
2599 $SVN::Node::dir.$SVN::Node::unknown.
2600 $SVN::Node::none.$SVN::Node::file.
2601 $SVN::Node::dir.$SVN::Node::unknown;
2602 1;
2603 };
2604 }
2605
2606 sub libsvn_connect {
2607 my ($url) = @_;
2608 my $auth = SVN::Core::auth_open([SVN::Client::get_simple_provider(),
2609 SVN::Client::get_ssl_server_trust_file_provider(),
2610 SVN::Client::get_username_provider()]);
2611 my $s = eval { SVN::Ra->new(url => $url, auth => $auth) };
2612 return $s;
2613 }
2614
2615 sub libsvn_get_file {
2616 my ($gui, $f, $rev) = @_;
2617 my $p = $f;
2618 if (length $SVN_PATH > 0) {
2619 return unless ($p =~ s#^\Q$SVN_PATH\E/##);
2620 }
2621
2622 my ($hash, $pid, $in, $out);
2623 my $pool = SVN::Pool->new;
2624 defined($pid = open3($in, $out, '>&STDERR',
2625 qw/git-hash-object -w --stdin/)) or croak $!;
2626 # redirect STDOUT for SVN 1.1.x compatibility
2627 open my $stdout, '>&', \*STDOUT or croak $!;
2628 open STDOUT, '>&', $in or croak $!;
2629 my ($r, $props) = $SVN->get_file($f, $rev, \*STDOUT, $pool);
2630 $in->flush == 0 or croak $!;
2631 open STDOUT, '>&', $stdout or croak $!;
2632 close $in or croak $!;
2633 close $stdout or croak $!;
2634 $pool->clear;
2635 chomp($hash = do { local $/; <$out> });
2636 close $out or croak $!;
2637 waitpid $pid, 0;
2638 $hash =~ /^$sha1$/o or die "not a sha1: $hash\n";
2639
2640 my $mode = exists $props->{'svn:executable'} ? '100755' : '100644';
2641 if (exists $props->{'svn:special'}) {
2642 $mode = '120000';
2643 my $link = `git-cat-file blob $hash`;
2644 $link =~ s/^link // or die "svn:special file with contents: <",
2645 $link, "> is not understood\n";
2646 defined($pid = open3($in, $out, '>&STDERR',
2647 qw/git-hash-object -w --stdin/)) or croak $!;
2648 print $in $link;
2649 $in->flush == 0 or croak $!;
2650 close $in or croak $!;
2651 chomp($hash = do { local $/; <$out> });
2652 close $out or croak $!;
2653 waitpid $pid, 0;
2654 $hash =~ /^$sha1$/o or die "not a sha1: $hash\n";
2655 }
2656 print $gui $mode,' ',$hash,"\t",$p,"\0" or croak $!;
2657 }
2658
2659 sub libsvn_log_entry {
2660 my ($rev, $author, $date, $msg, $parents) = @_;
2661 my ($Y,$m,$d,$H,$M,$S) = ($date =~ /^(\d{4})\-(\d\d)\-(\d\d)T
2662 (\d\d)\:(\d\d)\:(\d\d).\d+Z$/x)
2663 or die "Unable to parse date: $date\n";
2664 if (defined $_authors && ! defined $users{$author}) {
2665 die "Author: $author not defined in $_authors file\n";
2666 }
2667 $msg = '' if ($rev == 0 && !defined $msg);
2668 return { revision => $rev, date => "+0000 $Y-$m-$d $H:$M:$S",
2669 author => $author, msg => $msg."\n", parents => $parents || [] }
2670 }
2671
2672 sub process_rm {
2673 my ($gui, $last_commit, $f) = @_;
2674 $f =~ s#^\Q$SVN_PATH\E/?## or return;
2675 # remove entire directories.
2676 if (safe_qx('git-ls-tree',$last_commit,'--',$f) =~ /^040000 tree/) {
2677 defined(my $pid = open my $ls, '-|') or croak $!;
2678 if (!$pid) {
2679 exec(qw/git-ls-tree -r --name-only -z/,
2680 $last_commit,'--',$f) or croak $!;
2681 }
2682 local $/ = "\0";
2683 while (<$ls>) {
2684 print $gui '0 ',0 x 40,"\t",$_ or croak $!;
2685 }
2686 close $ls or croak $?;
2687 } else {
2688 print $gui '0 ',0 x 40,"\t",$f,"\0" or croak $!;
2689 }
2690 }
2691
2692 sub libsvn_fetch {
2693 my ($last_commit, $paths, $rev, $author, $date, $msg) = @_;
2694 open my $gui, '| git-update-index -z --index-info' or croak $!;
2695 my @amr;
2696 foreach my $f (keys %$paths) {
2697 my $m = $paths->{$f}->action();
2698 $f =~ s#^/+##;
2699 if ($m =~ /^[DR]$/) {
2700 print "\t$m\t$f\n" unless $_q;
2701 process_rm($gui, $last_commit, $f);
2702 next if $m eq 'D';
2703 # 'R' can be file replacements, too, right?
2704 }
2705 my $pool = SVN::Pool->new;
2706 my $t = $SVN->check_path($f, $rev, $pool);
2707 if ($t == $SVN::Node::file) {
2708 if ($m =~ /^[AMR]$/) {
2709 push @amr, [ $m, $f ];
2710 } else {
2711 die "Unrecognized action: $m, ($f r$rev)\n";
2712 }
2713 } elsif ($t == $SVN::Node::dir && $m =~ /^[AR]$/) {
2714 my @traversed = ();
2715 libsvn_traverse($gui, '', $f, $rev, \@traversed);
2716 foreach (@traversed) {
2717 push @amr, [ $m, $_ ]
2718 }
2719 }
2720 $pool->clear;
2721 }
2722 foreach (@amr) {
2723 print "\t$_->[0]\t$_->[1]\n" unless $_q;
2724 libsvn_get_file($gui, $_->[1], $rev)
2725 }
2726 close $gui or croak $?;
2727 return libsvn_log_entry($rev, $author, $date, $msg, [$last_commit]);
2728 }
2729
2730 sub svn_grab_base_rev {
2731 defined(my $pid = open my $fh, '-|') or croak $!;
2732 if (!$pid) {
2733 open my $null, '>', '/dev/null' or croak $!;
2734 open STDERR, '>&', $null or croak $!;
2735 exec qw/git-rev-parse --verify/,"refs/remotes/$GIT_SVN^0"
2736 or croak $!;
2737 }
2738 chomp(my $c = do { local $/; <$fh> });
2739 close $fh;
2740 if (defined $c && length $c) {
2741 my ($url, $rev, $uuid) = cmt_metadata($c);
2742 return ($rev, $c) if defined $rev;
2743 }
2744 if ($_no_metadata) {
2745 my $offset = -41; # from tail
2746 my $rl;
2747 open my $fh, '<', $REVDB or
2748 die "--no-metadata specified and $REVDB not readable\n";
2749 seek $fh, $offset, 2;
2750 $rl = readline $fh;
2751 defined $rl or return (undef, undef);
2752 chomp $rl;
2753 while ($c ne $rl && tell $fh != 0) {
2754 $offset -= 41;
2755 seek $fh, $offset, 2;
2756 $rl = readline $fh;
2757 defined $rl or return (undef, undef);
2758 chomp $rl;
2759 }
2760 my $rev = tell $fh;
2761 croak $! if ($rev < -1);
2762 $rev = ($rev - 41) / 41;
2763 close $fh or croak $!;
2764 return ($rev, $c);
2765 }
2766 return (undef, undef);
2767 }
2768
2769 sub libsvn_parse_revision {
2770 my $base = shift;
2771 my $head = $SVN->get_latest_revnum();
2772 if (!defined $_revision || $_revision eq 'BASE:HEAD') {
2773 return ($base + 1, $head) if (defined $base);
2774 return (0, $head);
2775 }
2776 return ($1, $2) if ($_revision =~ /^(\d+):(\d+)$/);
2777 return ($_revision, $_revision) if ($_revision =~ /^\d+$/);
2778 if ($_revision =~ /^BASE:(\d+)$/) {
2779 return ($base + 1, $1) if (defined $base);
2780 return (0, $head);
2781 }
2782 return ($1, $head) if ($_revision =~ /^(\d+):HEAD$/);
2783 die "revision argument: $_revision not understood by git-svn\n",
2784 "Try using the command-line svn client instead\n";
2785 }
2786
2787 sub libsvn_traverse {
2788 my ($gui, $pfx, $path, $rev, $files) = @_;
2789 my $cwd = "$pfx/$path";
2790 my $pool = SVN::Pool->new;
2791 $cwd =~ s#^/+##g;
2792 my ($dirent, $r, $props) = $SVN->get_dir($cwd, $rev, $pool);
2793 foreach my $d (keys %$dirent) {
2794 my $t = $dirent->{$d}->kind;
2795 if ($t == $SVN::Node::dir) {
2796 libsvn_traverse($gui, $cwd, $d, $rev, $files);
2797 } elsif ($t == $SVN::Node::file) {
2798 my $file = "$cwd/$d";
2799 if (defined $files) {
2800 push @$files, $file;
2801 } else {
2802 print "\tA\t$file\n" unless $_q;
2803 libsvn_get_file($gui, $file, $rev);
2804 }
2805 }
2806 }
2807 $pool->clear;
2808 }
2809
2810 sub libsvn_traverse_ignore {
2811 my ($fh, $path, $r) = @_;
2812 $path =~ s#^/+##g;
2813 my $pool = SVN::Pool->new;
2814 my ($dirent, undef, $props) = $SVN->get_dir($path, $r, $pool);
2815 my $p = $path;
2816 $p =~ s#^\Q$SVN_PATH\E/?##;
2817 print $fh length $p ? "\n# $p\n" : "\n# /\n";
2818 if (my $s = $props->{'svn:ignore'}) {
2819 $s =~ s/[\r\n]+/\n/g;
2820 chomp $s;
2821 if (length $p == 0) {
2822 $s =~ s#\n#\n/$p#g;
2823 print $fh "/$s\n";
2824 } else {
2825 $s =~ s#\n#\n/$p/#g;
2826 print $fh "/$p/$s\n";
2827 }
2828 }
2829 foreach (sort keys %$dirent) {
2830 next if $dirent->{$_}->kind != $SVN::Node::dir;
2831 libsvn_traverse_ignore($fh, "$path/$_", $r);
2832 }
2833 $pool->clear;
2834 }
2835
2836 sub revisions_eq {
2837 my ($path, $r0, $r1) = @_;
2838 return 1 if $r0 == $r1;
2839 my $nr = 0;
2840 if ($_use_lib) {
2841 # should be OK to use Pool here (r1 - r0) should be small
2842 my $pool = SVN::Pool->new;
2843 libsvn_get_log($SVN, "/$path", $r0, $r1,
2844 0, 1, 1, sub {$nr++}, $pool);
2845 $pool->clear;
2846 } else {
2847 my ($url, undef) = repo_path_split($SVN_URL);
2848 my $svn_log = svn_log_raw("$url/$path","-r$r0:$r1");
2849 while (next_log_entry($svn_log)) { $nr++ }
2850 close $svn_log->{fh};
2851 }
2852 return 0 if ($nr > 1);
2853 return 1;
2854 }
2855
2856 sub libsvn_find_parent_branch {
2857 my ($paths, $rev, $author, $date, $msg) = @_;
2858 my $svn_path = '/'.$SVN_PATH;
2859
2860 # look for a parent from another branch:
2861 my $i = $paths->{$svn_path} or return;
2862 my $branch_from = $i->copyfrom_path or return;
2863 my $r = $i->copyfrom_rev;
2864 print STDERR "Found possible branch point: ",
2865 "$branch_from => $svn_path, $r\n";
2866 $branch_from =~ s#^/##;
2867 my $l_map = {};
2868 read_url_paths_all($l_map, '', "$GIT_DIR/svn");
2869 my $url = $SVN->{url};
2870 defined $l_map->{$url} or return;
2871 my $id = $l_map->{$url}->{$branch_from};
2872 if (!defined $id && $_follow_parent) {
2873 print STDERR "Following parent: $branch_from\@$r\n";
2874 # auto create a new branch and follow it
2875 $id = basename($branch_from);
2876 $id .= '@'.$r if -r "$GIT_DIR/svn/$id";
2877 while (-r "$GIT_DIR/svn/$id") {
2878 # just grow a tail if we're not unique enough :x
2879 $id .= '-';
2880 }
2881 }
2882 return unless defined $id;
2883
2884 my ($r0, $parent) = find_rev_before($r,$id,1);
2885 if ($_follow_parent && (!defined $r0 || !defined $parent)) {
2886 defined(my $pid = fork) or croak $!;
2887 if (!$pid) {
2888 $GIT_SVN = $ENV{GIT_SVN_ID} = $id;
2889 init_vars();
2890 $SVN_URL = "$url/$branch_from";
2891 $SVN_LOG = $SVN = undef;
2892 setup_git_svn();
2893 # we can't assume SVN_URL exists at r+1:
2894 $_revision = "0:$r";
2895 fetch_lib();
2896 exit 0;
2897 }
2898 waitpid $pid, 0;
2899 croak $? if $?;
2900 ($r0, $parent) = find_rev_before($r,$id,1);
2901 }
2902 return unless (defined $r0 && defined $parent);
2903 if (revisions_eq($branch_from, $r0, $r)) {
2904 unlink $GIT_SVN_INDEX;
2905 print STDERR "Found branch parent: ($GIT_SVN) $parent\n";
2906 sys(qw/git-read-tree/, $parent);
2907 return libsvn_fetch($parent, $paths, $rev,
2908 $author, $date, $msg);
2909 }
2910 print STDERR "Nope, branch point not imported or unknown\n";
2911 return undef;
2912 }
2913
2914 sub libsvn_get_log {
2915 my ($ra, @args) = @_;
2916 if ($SVN::Core::VERSION le '1.2.0') {
2917 splice(@args, 3, 1);
2918 }
2919 $ra->get_log(@args);
2920 }
2921
2922 sub libsvn_new_tree {
2923 if (my $log_entry = libsvn_find_parent_branch(@_)) {
2924 return $log_entry;
2925 }
2926 my ($paths, $rev, $author, $date, $msg) = @_;
2927 open my $gui, '| git-update-index -z --index-info' or croak $!;
2928 libsvn_traverse($gui, '', $SVN_PATH, $rev);
2929 close $gui or croak $?;
2930 return libsvn_log_entry($rev, $author, $date, $msg);
2931 }
2932
2933 sub find_graft_path_commit {
2934 my ($tree_paths, $p1, $r1) = @_;
2935 foreach my $x (keys %$tree_paths) {
2936 next unless ($p1 =~ /^\Q$x\E/);
2937 my $i = $tree_paths->{$x};
2938 my ($r0, $parent) = find_rev_before($r1,$i,1);
2939 return $parent if (defined $r0 && $r0 == $r1);
2940 print STDERR "r$r1 of $i not imported\n";
2941 next;
2942 }
2943 return undef;
2944 }
2945
2946 sub find_graft_path_parents {
2947 my ($grafts, $tree_paths, $c, $p0, $r0) = @_;
2948 foreach my $x (keys %$tree_paths) {
2949 next unless ($p0 =~ /^\Q$x\E/);
2950 my $i = $tree_paths->{$x};
2951 my ($r, $parent) = find_rev_before($r0, $i, 1);
2952 if (defined $r && defined $parent && revisions_eq($x,$r,$r0)) {
2953 my ($url_b, undef, $uuid_b) = cmt_metadata($c);
2954 my ($url_a, undef, $uuid_a) = cmt_metadata($parent);
2955 next if ($url_a && $url_b && $url_a eq $url_b &&
2956 $uuid_b eq $uuid_a);
2957 $grafts->{$c}->{$parent} = 1;
2958 }
2959 }
2960 }
2961
2962 sub libsvn_graft_file_copies {
2963 my ($grafts, $tree_paths, $path, $paths, $rev) = @_;
2964 foreach (keys %$paths) {
2965 my $i = $paths->{$_};
2966 my ($m, $p0, $r0) = ($i->action, $i->copyfrom_path,
2967 $i->copyfrom_rev);
2968 next unless (defined $p0 && defined $r0);
2969
2970 my $p1 = $_;
2971 $p1 =~ s#^/##;
2972 $p0 =~ s#^/##;
2973 my $c = find_graft_path_commit($tree_paths, $p1, $rev);
2974 next unless $c;
2975 find_graft_path_parents($grafts, $tree_paths, $c, $p0, $r0);
2976 }
2977 }
2978
2979 sub set_index {
2980 my $old = $ENV{GIT_INDEX_FILE};
2981 $ENV{GIT_INDEX_FILE} = shift;
2982 return $old;
2983 }
2984
2985 sub restore_index {
2986 my ($old) = @_;
2987 if (defined $old) {
2988 $ENV{GIT_INDEX_FILE} = $old;
2989 } else {
2990 delete $ENV{GIT_INDEX_FILE};
2991 }
2992 }
2993
2994 sub libsvn_commit_cb {
2995 my ($rev, $date, $committer, $c, $msg, $r_last, $cmt_last) = @_;
2996 if ($_optimize_commits && $rev == ($r_last + 1)) {
2997 my $log = libsvn_log_entry($rev,$committer,$date,$msg);
2998 $log->{tree} = get_tree_from_treeish($c);
2999 my $cmt = git_commit($log, $cmt_last, $c);
3000 my @diff = safe_qx('git-diff-tree', $cmt, $c);
3001 if (@diff) {
3002 print STDERR "Trees differ: $cmt $c\n",
3003 join('',@diff),"\n";
3004 exit 1;
3005 }
3006 } else {
3007 fetch("$rev=$c");
3008 }
3009 }
3010
3011 sub libsvn_ls_fullurl {
3012 my $fullurl = shift;
3013 my ($repo, $path) = repo_path_split($fullurl);
3014 $SVN ||= libsvn_connect($repo);
3015 my @ret;
3016 my $pool = SVN::Pool->new;
3017 my ($dirent, undef, undef) = $SVN->get_dir($path,
3018 $SVN->get_latest_revnum, $pool);
3019 foreach my $d (keys %$dirent) {
3020 if ($dirent->{$d}->kind == $SVN::Node::dir) {
3021 push @ret, "$d/"; # add '/' for compat with cli svn
3022 }
3023 }
3024 $pool->clear;
3025 return @ret;
3026 }
3027
3028
3029 sub libsvn_skip_unknown_revs {
3030 my $err = shift;
3031 my $errno = $err->apr_err();
3032 # Maybe the branch we're tracking didn't
3033 # exist when the repo started, so it's
3034 # not an error if it doesn't, just continue
3035 #
3036 # Wonderfully consistent library, eh?
3037 # 160013 - svn:// and file://
3038 # 175002 - http(s)://
3039 # More codes may be discovered later...
3040 if ($errno == 175002 || $errno == 160013) {
3041 return;
3042 }
3043 croak "Error from SVN, ($errno): ", $err->expanded_message,"\n";
3044 };
3045
3046 # Tie::File seems to be prone to offset errors if revisions get sparse,
3047 # it's not that fast, either. Tie::File is also not in Perl 5.6. So
3048 # one of my favorite modules is out :< Next up would be one of the DBM
3049 # modules, but I'm not sure which is most portable... So I'll just
3050 # go with something that's plain-text, but still capable of
3051 # being randomly accessed. So here's my ultra-simple fixed-width
3052 # database. All records are 40 characters + "\n", so it's easy to seek
3053 # to a revision: (41 * rev) is the byte offset.
3054 # A record of 40 0s denotes an empty revision.
3055 # And yes, it's still pretty fast (faster than Tie::File).
3056 sub revdb_set {
3057 my ($file, $rev, $commit) = @_;
3058 length $commit == 40 or croak "arg3 must be a full SHA1 hexsum\n";
3059 open my $fh, '+<', $file or croak $!;
3060 my $offset = $rev * 41;
3061 # assume that append is the common case:
3062 seek $fh, 0, 2 or croak $!;
3063 my $pos = tell $fh;
3064 if ($pos < $offset) {
3065 print $fh (('0' x 40),"\n") x (($offset - $pos) / 41);
3066 }
3067 seek $fh, $offset, 0 or croak $!;
3068 print $fh $commit,"\n";
3069 close $fh or croak $!;
3070 }
3071
3072 sub revdb_get {
3073 my ($file, $rev) = @_;
3074 my $ret;
3075 my $offset = $rev * 41;
3076 open my $fh, '<', $file or croak $!;
3077 seek $fh, $offset, 0;
3078 if (tell $fh == $offset) {
3079 $ret = readline $fh;
3080 if (defined $ret) {
3081 chomp $ret;
3082 $ret = undef if ($ret =~ /^0{40}$/);
3083 }
3084 }
3085 close $fh or croak $!;
3086 return $ret;
3087 }
3088
3089 sub copy_remote_ref {
3090 my $origin = $_cp_remote ? $_cp_remote : 'origin';
3091 my $ref = "refs/remotes/$GIT_SVN";
3092 if (safe_qx('git-ls-remote', $origin, $ref)) {
3093 sys(qw/git fetch/, $origin, "$ref:$ref");
3094 } else {
3095 die "Unable to find remote reference: ",
3096 "refs/remotes/$GIT_SVN on $origin\n";
3097 }
3098 }
3099
3100 package SVN::Git::Editor;
3101 use vars qw/@ISA/;
3102 use strict;
3103 use warnings;
3104 use Carp qw/croak/;
3105 use IO::File;
3106
3107 sub new {
3108 my $class = shift;
3109 my $git_svn = shift;
3110 my $self = SVN::Delta::Editor->new(@_);
3111 bless $self, $class;
3112 foreach (qw/svn_path c r ra /) {
3113 die "$_ required!\n" unless (defined $git_svn->{$_});
3114 $self->{$_} = $git_svn->{$_};
3115 }
3116 $self->{pool} = SVN::Pool->new;
3117 $self->{bat} = { '' => $self->open_root($self->{r}, $self->{pool}) };
3118 $self->{rm} = { };
3119 require Digest::MD5;
3120 return $self;
3121 }
3122
3123 sub split_path {
3124 return ($_[0] =~ m#^(.*?)/?([^/]+)$#);
3125 }
3126
3127 sub repo_path {
3128 (defined $_[1] && length $_[1]) ? "$_[0]->{svn_path}/$_[1]"
3129 : $_[0]->{svn_path}
3130 }
3131
3132 sub url_path {
3133 my ($self, $path) = @_;
3134 $self->{ra}->{url} . '/' . $self->repo_path($path);
3135 }
3136
3137 sub rmdirs {
3138 my ($self, $q) = @_;
3139 my $rm = $self->{rm};
3140 delete $rm->{''}; # we never delete the url we're tracking
3141 return unless %$rm;
3142
3143 foreach (keys %$rm) {
3144 my @d = split m#/#, $_;
3145 my $c = shift @d;
3146 $rm->{$c} = 1;
3147 while (@d) {
3148 $c .= '/' . shift @d;
3149 $rm->{$c} = 1;
3150 }
3151 }
3152 delete $rm->{$self->{svn_path}};
3153 delete $rm->{''}; # we never delete the url we're tracking
3154 return unless %$rm;
3155
3156 defined(my $pid = open my $fh,'-|') or croak $!;
3157 if (!$pid) {
3158 exec qw/git-ls-tree --name-only -r -z/, $self->{c} or croak $!;
3159 }
3160 local $/ = "\0";
3161 my @svn_path = split m#/#, $self->{svn_path};
3162 while (<$fh>) {
3163 chomp;
3164 my @dn = (@svn_path, (split m#/#, $_));
3165 while (pop @dn) {
3166 delete $rm->{join '/', @dn};
3167 }
3168 unless (%$rm) {
3169 close $fh;
3170 return;
3171 }
3172 }
3173 close $fh;
3174
3175 my ($r, $p, $bat) = ($self->{r}, $self->{pool}, $self->{bat});
3176 foreach my $d (sort { $b =~ tr#/#/# <=> $a =~ tr#/#/# } keys %$rm) {
3177 $self->close_directory($bat->{$d}, $p);
3178 my ($dn) = ($d =~ m#^(.*?)/?(?:[^/]+)$#);
3179 print "\tD+\t/$d/\n" unless $q;
3180 $self->SUPER::delete_entry($d, $r, $bat->{$dn}, $p);
3181 delete $bat->{$d};
3182 }
3183 }
3184
3185 sub open_or_add_dir {
3186 my ($self, $full_path, $baton) = @_;
3187 my $p = SVN::Pool->new;
3188 my $t = $self->{ra}->check_path($full_path, $self->{r}, $p);
3189 $p->clear;
3190 if ($t == $SVN::Node::none) {
3191 return $self->add_directory($full_path, $baton,
3192 undef, -1, $self->{pool});
3193 } elsif ($t == $SVN::Node::dir) {
3194 return $self->open_directory($full_path, $baton,
3195 $self->{r}, $self->{pool});
3196 }
3197 print STDERR "$full_path already exists in repository at ",
3198 "r$self->{r} and it is not a directory (",
3199 ($t == $SVN::Node::file ? 'file' : 'unknown'),"/$t)\n";
3200 exit 1;
3201 }
3202
3203 sub ensure_path {
3204 my ($self, $path) = @_;
3205 my $bat = $self->{bat};
3206 $path = $self->repo_path($path);
3207 return $bat->{''} unless (length $path);
3208 my @p = split m#/+#, $path;
3209 my $c = shift @p;
3210 $bat->{$c} ||= $self->open_or_add_dir($c, $bat->{''});
3211 while (@p) {
3212 my $c0 = $c;
3213 $c .= '/' . shift @p;
3214 $bat->{$c} ||= $self->open_or_add_dir($c, $bat->{$c0});
3215 }
3216 return $bat->{$c};
3217 }
3218
3219 sub A {
3220 my ($self, $m, $q) = @_;
3221 my ($dir, $file) = split_path($m->{file_b});
3222 my $pbat = $self->ensure_path($dir);
3223 my $fbat = $self->add_file($self->repo_path($m->{file_b}), $pbat,
3224 undef, -1);
3225 print "\tA\t$m->{file_b}\n" unless $q;
3226 $self->chg_file($fbat, $m);
3227 $self->close_file($fbat,undef,$self->{pool});
3228 }
3229
3230 sub C {
3231 my ($self, $m, $q) = @_;
3232 my ($dir, $file) = split_path($m->{file_b});
3233 my $pbat = $self->ensure_path($dir);
3234 my $fbat = $self->add_file($self->repo_path($m->{file_b}), $pbat,
3235 $self->url_path($m->{file_a}), $self->{r});
3236 print "\tC\t$m->{file_a} => $m->{file_b}\n" unless $q;
3237 $self->chg_file($fbat, $m);
3238 $self->close_file($fbat,undef,$self->{pool});
3239 }
3240
3241 sub delete_entry {
3242 my ($self, $path, $pbat) = @_;
3243 my $rpath = $self->repo_path($path);
3244 my ($dir, $file) = split_path($rpath);
3245 $self->{rm}->{$dir} = 1;
3246 $self->SUPER::delete_entry($rpath, $self->{r}, $pbat, $self->{pool});
3247 }
3248
3249 sub R {
3250 my ($self, $m, $q) = @_;
3251 my ($dir, $file) = split_path($m->{file_b});
3252 my $pbat = $self->ensure_path($dir);
3253 my $fbat = $self->add_file($self->repo_path($m->{file_b}), $pbat,
3254 $self->url_path($m->{file_a}), $self->{r});
3255 print "\tR\t$m->{file_a} => $m->{file_b}\n" unless $q;
3256 $self->chg_file($fbat, $m);
3257 $self->close_file($fbat,undef,$self->{pool});
3258
3259 ($dir, $file) = split_path($m->{file_a});
3260 $pbat = $self->ensure_path($dir);
3261 $self->delete_entry($m->{file_a}, $pbat);
3262 }
3263
3264 sub M {
3265 my ($self, $m, $q) = @_;
3266 my ($dir, $file) = split_path($m->{file_b});
3267 my $pbat = $self->ensure_path($dir);
3268 my $fbat = $self->open_file($self->repo_path($m->{file_b}),
3269 $pbat,$self->{r},$self->{pool});
3270 print "\t$m->{chg}\t$m->{file_b}\n" unless $q;
3271 $self->chg_file($fbat, $m);
3272 $self->close_file($fbat,undef,$self->{pool});
3273 }
3274
3275 sub T { shift->M(@_) }
3276
3277 sub change_file_prop {
3278 my ($self, $fbat, $pname, $pval) = @_;
3279 $self->SUPER::change_file_prop($fbat, $pname, $pval, $self->{pool});
3280 }
3281
3282 sub chg_file {
3283 my ($self, $fbat, $m) = @_;
3284 if ($m->{mode_b} =~ /755$/ && $m->{mode_a} !~ /755$/) {
3285 $self->change_file_prop($fbat,'svn:executable','*');
3286 } elsif ($m->{mode_b} !~ /755$/ && $m->{mode_a} =~ /755$/) {
3287 $self->change_file_prop($fbat,'svn:executable',undef);
3288 }
3289 my $fh = IO::File->new_tmpfile or croak $!;
3290 if ($m->{mode_b} =~ /^120/) {
3291 print $fh 'link ' or croak $!;
3292 $self->change_file_prop($fbat,'svn:special','*');
3293 } elsif ($m->{mode_a} =~ /^120/ && $m->{mode_b} !~ /^120/) {
3294 $self->change_file_prop($fbat,'svn:special',undef);
3295 }
3296 defined(my $pid = fork) or croak $!;
3297 if (!$pid) {
3298 open STDOUT, '>&', $fh or croak $!;
3299 exec qw/git-cat-file blob/, $m->{sha1_b} or croak $!;
3300 }
3301 waitpid $pid, 0;
3302 croak $? if $?;
3303 $fh->flush == 0 or croak $!;
3304 seek $fh, 0, 0 or croak $!;
3305
3306 my $md5 = Digest::MD5->new;
3307 $md5->addfile($fh) or croak $!;
3308 seek $fh, 0, 0 or croak $!;
3309
3310 my $exp = $md5->hexdigest;
3311 my $atd = $self->apply_textdelta($fbat, undef, $self->{pool});
3312 my $got = SVN::TxDelta::send_stream($fh, @$atd, $self->{pool});
3313 die "Checksum mismatch\nexpected: $exp\ngot: $got\n" if ($got ne $exp);
3314
3315 close $fh or croak $!;
3316 }
3317
3318 sub D {
3319 my ($self, $m, $q) = @_;
3320 my ($dir, $file) = split_path($m->{file_b});
3321 my $pbat = $self->ensure_path($dir);
3322 print "\tD\t$m->{file_b}\n" unless $q;
3323 $self->delete_entry($m->{file_b}, $pbat);
3324 }
3325
3326 sub close_edit {
3327 my ($self) = @_;
3328 my ($p,$bat) = ($self->{pool}, $self->{bat});
3329 foreach (sort { $b =~ tr#/#/# <=> $a =~ tr#/#/# } keys %$bat) {
3330 $self->close_directory($bat->{$_}, $p);
3331 }
3332 $self->SUPER::close_edit($p);
3333 $p->clear;
3334 }
3335
3336 sub abort_edit {
3337 my ($self) = @_;
3338 $self->SUPER::abort_edit($self->{pool});
3339 $self->{pool}->clear;
3340 }
3341
3342 __END__
3343
3344 Data structures:
3345
3346 $svn_log hashref (as returned by svn_log_raw)
3347 {
3348 fh => file handle of the log file,
3349 state => state of the log file parser (sep/msg/rev/msg_start...)
3350 }
3351
3352 $log_msg hashref as returned by next_log_entry($svn_log)
3353 {
3354 msg => 'whitespace-formatted log entry
3355 ', # trailing newline is preserved
3356 revision => '8', # integer
3357 date => '2004-02-24T17:01:44.108345Z', # commit date
3358 author => 'committer name'
3359 };
3360
3361
3362 @mods = array of diff-index line hashes, each element represents one line
3363 of diff-index output
3364
3365 diff-index line ($m hash)
3366 {
3367 mode_a => first column of diff-index output, no leading ':',
3368 mode_b => second column of diff-index output,
3369 sha1_b => sha1sum of the final blob,
3370 chg => change type [MCRADT],
3371 file_a => original file name of a file (iff chg is 'C' or 'R')
3372 file_b => new/current file name of a file (any chg)
3373 }
3374 ;
3375
3376 # retval of read_url_paths{,_all}();
3377 $l_map = {
3378 # repository root url
3379 'https://svn.musicpd.org' => {
3380 # repository path # GIT_SVN_ID
3381 'mpd/trunk' => 'trunk',
3382 'mpd/tags/0.11.5' => 'tags/0.11.5',
3383 },
3384 }
3385
3386 Notes:
3387 I don't trust the each() function on unless I created %hash myself
3388 because the internal iterator may not have started at base.
Alternate source for your git.git needs