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gitweb: Remove redundant "commit" from history
[git/mingw.git] / git-svn.perl
blob017f45ac972cf030e545258af0e3793ad1b87e3f
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, $_ignore_nodate);
56 my (@_branch_from, %tree_map, %users, %rusers, %equiv);
57 my ($_svn_co_url_revs, $_svn_pg_peg_revs);
58 my @repo_path_split_cache;
59
60 my %fc_opts = ( 'no-ignore-externals' => \$_no_ignore_ext,
61 'branch|b=s' => \@_branch_from,
62 'follow-parent|follow' => \$_follow_parent,
63 'branch-all-refs|B' => \$_branch_all_refs,
64 'authors-file|A=s' => \$_authors,
65 'repack:i' => \$_repack,
66 'no-metadata' => \$_no_metadata,
67 'quiet|q' => \$_q,
68 'ignore-nodate' => \$_ignore_nodate,
69 'repack-flags|repack-args|repack-opts=s' => \$_repack_flags);
70
71 my ($_trunk, $_tags, $_branches);
72 my %multi_opts = ( 'trunk|T=s' => \$_trunk,
73 'tags|t=s' => \$_tags,
74 'branches|b=s' => \$_branches );
75 my %init_opts = ( 'template=s' => \$_template, 'shared' => \$_shared );
76 my %cmt_opts = ( 'edit|e' => \$_edit,
77 'rmdir' => \$_rmdir,
78 'find-copies-harder' => \$_find_copies_harder,
79 'l=i' => \$_l,
80 'copy-similarity|C=i'=> \$_cp_similarity
81 );
82
83 my %cmd = (
84 fetch => [ \&fetch, "Download new revisions from SVN",
85 { 'revision|r=s' => \$_revision, %fc_opts } ],
86 init => [ \&init, "Initialize a repo for tracking" .
87 " (requires URL argument)",
88 \%init_opts ],
89 commit => [ \&commit, "Commit git revisions to SVN",
90 { 'stdin|' => \$_stdin, %cmt_opts, %fc_opts, } ],
91 'show-ignore' => [ \&show_ignore, "Show svn:ignore listings",
92 { 'revision|r=i' => \$_revision } ],
93 rebuild => [ \&rebuild, "Rebuild git-svn metadata (after git clone)",
94 { 'no-ignore-externals' => \$_no_ignore_ext,
95 'copy-remote|remote=s' => \$_cp_remote,
96 'upgrade' => \$_upgrade } ],
97 'graft-branches' => [ \&graft_branches,
98 'Detect merges/branches from already imported history',
99 { 'merge-rx|m' => \@_opt_m,
100 'branch|b=s' => \@_branch_from,
101 'branch-all-refs|B' => \$_branch_all_refs,
102 'no-default-regex' => \$_no_default_regex,
103 'no-graft-copy' => \$_no_graft_copy } ],
104 'multi-init' => [ \&multi_init,
105 'Initialize multiple trees (like git-svnimport)',
106 { %multi_opts, %fc_opts } ],
107 'multi-fetch' => [ \&multi_fetch,
108 'Fetch multiple trees (like git-svnimport)',
109 \%fc_opts ],
110 'log' => [ \&show_log, 'Show commit logs',
111 { 'limit=i' => \$_limit,
112 'revision|r=s' => \$_revision,
113 'verbose|v' => \$_verbose,
114 'incremental' => \$_incremental,
115 'oneline' => \$_oneline,
116 'show-commit' => \$_show_commit,
117 'authors-file|A=s' => \$_authors,
118 } ],
119 'commit-diff' => [ \&commit_diff, 'Commit a diff between two trees',
120 { 'message|m=s' => \$_message,
121 'file|F=s' => \$_file,
122 %cmt_opts } ],
123 dcommit => [ \&dcommit, 'Commit several diffs to merge with upstream',
124 { 'merge|m|M' => \$_merge,
125 'strategy|s=s' => \$_strategy,
126 'dry-run|n' => \$_dry_run,
127 %cmt_opts } ],
128 );
129
130 my $cmd;
131 for (my $i = 0; $i < @ARGV; $i++) {
132 if (defined $cmd{$ARGV[$i]}) {
133 $cmd = $ARGV[$i];
134 splice @ARGV, $i, 1;
135 last;
136 }
137 };
138
139 my %opts = %{$cmd{$cmd}->[2]} if (defined $cmd);
140
141 read_repo_config(\%opts);
142 my $rv = GetOptions(%opts, 'help|H|h' => \$_help,
143 'version|V' => \$_version,
144 'id|i=s' => \$GIT_SVN);
145 exit 1 if (!$rv && $cmd ne 'log');
146
147 set_default_vals();
148 usage(0) if $_help;
149 version() if $_version;
150 usage(1) unless defined $cmd;
151 init_vars();
152 load_authors() if $_authors;
153 load_all_refs() if $_branch_all_refs;
154 svn_compat_check() unless $_use_lib;
155 migration_check() unless $cmd =~ /^(?:init|rebuild|multi-init|commit-diff)$/;
156 $cmd{$cmd}->[0]->(@ARGV);
157 exit 0;
158
159 ####################### primary functions ######################
160 sub usage {
161 my $exit = shift || 0;
162 my $fd = $exit ? \*STDERR : \*STDOUT;
163 print $fd <<"";
164 git-svn - bidirectional operations between a single Subversion tree and git
165 Usage: $0 <command> [options] [arguments]\n
166
167 print $fd "Available commands:\n" unless $cmd;
168
169 foreach (sort keys %cmd) {
170 next if $cmd && $cmd ne $_;
171 print $fd ' ',pack('A13',$_),$cmd{$_}->[1],"\n";
172 foreach (keys %{$cmd{$_}->[2]}) {
173 # prints out arguments as they should be passed:
174 my $x = s#[:=]s$## ? '<arg>' : s#[:=]i$## ? '<num>' : '';
175 print $fd ' ' x 17, join(', ', map { length $_ > 1 ?
176 "--$_" : "-$_" }
177 split /\|/,$_)," $x\n";
178 }
179 }
180 print $fd <<"";
181 \nGIT_SVN_ID may be set in the environment or via the --id/-i switch to an
182 arbitrary identifier if you're tracking multiple SVN branches/repositories in
183 one git repository and want to keep them separate. See git-svn(1) for more
184 information.
185
186 exit $exit;
187 }
188
189 sub version {
190 print "git-svn version $VERSION\n";
191 exit 0;
192 }
193
194 sub rebuild {
195 if (quiet_run(qw/git-rev-parse --verify/,"refs/remotes/$GIT_SVN^0")) {
196 copy_remote_ref();
197 }
198 $SVN_URL = shift or undef;
199 my $newest_rev = 0;
200 if ($_upgrade) {
201 sys('git-update-ref',"refs/remotes/$GIT_SVN","$GIT_SVN-HEAD");
202 } else {
203 check_upgrade_needed();
204 }
205
206 my $pid = open(my $rev_list,'-|');
207 defined $pid or croak $!;
208 if ($pid == 0) {
209 exec("git-rev-list","refs/remotes/$GIT_SVN") or croak $!;
210 }
211 my $latest;
212 while (<$rev_list>) {
213 chomp;
214 my $c = $_;
215 croak "Non-SHA1: $c\n" unless $c =~ /^$sha1$/o;
216 my @commit = grep(/^git-svn-id: /,`git-cat-file commit $c`);
217 next if (!@commit); # skip merges
218 my ($url, $rev, $uuid) = extract_metadata($commit[$#commit]);
219 if (!$rev || !$uuid) {
220 croak "Unable to extract revision or UUID from ",
221 "$c, $commit[$#commit]\n";
222 }
223
224 # if we merged or otherwise started elsewhere, this is
225 # how we break out of it
226 next if (defined $SVN_UUID && ($uuid ne $SVN_UUID));
227 next if (defined $SVN_URL && defined $url && ($url ne $SVN_URL));
228
229 unless (defined $latest) {
230 if (!$SVN_URL && !$url) {
231 croak "SVN repository location required: $url\n";
232 }
233 $SVN_URL ||= $url;
234 $SVN_UUID ||= $uuid;
235 setup_git_svn();
236 $latest = $rev;
237 }
238 revdb_set($REVDB, $rev, $c);
239 print "r$rev = $c\n";
240 $newest_rev = $rev if ($rev > $newest_rev);
241 }
242 close $rev_list or croak $?;
243
244 goto out if $_use_lib;
245 if (!chdir $SVN_WC) {
246 svn_cmd_checkout($SVN_URL, $latest, $SVN_WC);
247 chdir $SVN_WC or croak $!;
248 }
249
250 $pid = fork;
251 defined $pid or croak $!;
252 if ($pid == 0) {
253 my @svn_up = qw(svn up);
254 push @svn_up, '--ignore-externals' unless $_no_ignore_ext;
255 sys(@svn_up,"-r$newest_rev");
256 $ENV{GIT_INDEX_FILE} = $GIT_SVN_INDEX;
257 index_changes();
258 exec('git-write-tree') or croak $!;
259 }
260 waitpid $pid, 0;
261 croak $? if $?;
262 out:
263 if ($_upgrade) {
264 print STDERR <<"";
265 Keeping deprecated refs/head/$GIT_SVN-HEAD for now. Please remove it
266 when you have upgraded your tools and habits to use refs/remotes/$GIT_SVN
267
268 }
269 }
270
271 sub init {
272 my $url = shift or die "SVN repository location required " .
273 "as a command-line argument\n";
274 $url =~ s!/+$!!; # strip trailing slash
275
276 if (my $repo_path = shift) {
277 unless (-d $repo_path) {
278 mkpath([$repo_path]);
279 }
280 $GIT_DIR = $ENV{GIT_DIR} = $repo_path . "/.git";
281 init_vars();
282 }
283
284 $SVN_URL = $url;
285 unless (-d $GIT_DIR) {
286 my @init_db = ('git-init-db');
287 push @init_db, "--template=$_template" if defined $_template;
288 push @init_db, "--shared" if defined $_shared;
289 sys(@init_db);
290 }
291 setup_git_svn();
292 }
293
294 sub fetch {
295 check_upgrade_needed();
296 $SVN_URL ||= file_to_s("$GIT_SVN_DIR/info/url");
297 my $ret = $_use_lib ? fetch_lib(@_) : fetch_cmd(@_);
298 if ($ret->{commit} && quiet_run(qw(git-rev-parse --verify
299 refs/heads/master^0))) {
300 sys(qw(git-update-ref refs/heads/master),$ret->{commit});
301 }
302 return $ret;
303 }
304
305 sub fetch_cmd {
306 my (@parents) = @_;
307 my @log_args = -d $SVN_WC ? ($SVN_WC) : ($SVN_URL);
308 unless ($_revision) {
309 $_revision = -d $SVN_WC ? 'BASE:HEAD' : '0:HEAD';
310 }
311 push @log_args, "-r$_revision";
312 push @log_args, '--stop-on-copy' unless $_no_stop_copy;
313
314 my $svn_log = svn_log_raw(@log_args);
315
316 my $base = next_log_entry($svn_log) or croak "No base revision!\n";
317 # don't need last_revision from grab_base_rev() because
318 # user could've specified a different revision to skip (they
319 # didn't want to import certain revisions into git for whatever
320 # reason, so trust $base->{revision} instead.
321 my (undef, $last_commit) = svn_grab_base_rev();
322 unless (-d $SVN_WC) {
323 svn_cmd_checkout($SVN_URL,$base->{revision},$SVN_WC);
324 chdir $SVN_WC or croak $!;
325 read_uuid();
326 $last_commit = git_commit($base, @parents);
327 assert_tree($last_commit);
328 } else {
329 chdir $SVN_WC or croak $!;
330 read_uuid();
331 # looks like a user manually cp'd and svn switch'ed
332 unless ($last_commit) {
333 sys(qw/svn revert -R ./);
334 assert_svn_wc_clean($base->{revision});
335 $last_commit = git_commit($base, @parents);
336 assert_tree($last_commit);
337 }
338 }
339 my @svn_up = qw(svn up);
340 push @svn_up, '--ignore-externals' unless $_no_ignore_ext;
341 my $last = $base;
342 while (my $log_msg = next_log_entry($svn_log)) {
343 if ($last->{revision} >= $log_msg->{revision}) {
344 croak "Out of order: last >= current: ",
345 "$last->{revision} >= $log_msg->{revision}\n";
346 }
347 # Revert is needed for cases like:
348 # https://svn.musicpd.org/Jamming/trunk (r166:167), but
349 # I can't seem to reproduce something like that on a test...
350 sys(qw/svn revert -R ./);
351 assert_svn_wc_clean($last->{revision});
352 sys(@svn_up,"-r$log_msg->{revision}");
353 $last_commit = git_commit($log_msg, $last_commit, @parents);
354 $last = $log_msg;
355 }
356 close $svn_log->{fh};
357 $last->{commit} = $last_commit;
358 return $last;
359 }
360
361 sub fetch_lib {
362 my (@parents) = @_;
363 $SVN_URL ||= file_to_s("$GIT_SVN_DIR/info/url");
364 my $repo;
365 ($repo, $SVN_PATH) = repo_path_split($SVN_URL);
366 $SVN_LOG ||= libsvn_connect($repo);
367 $SVN ||= libsvn_connect($repo);
368 my ($last_rev, $last_commit) = svn_grab_base_rev();
369 my ($base, $head) = libsvn_parse_revision($last_rev);
370 if ($base > $head) {
371 return { revision => $last_rev, commit => $last_commit }
372 }
373 my $index = set_index($GIT_SVN_INDEX);
374
375 # limit ourselves and also fork() since get_log won't release memory
376 # after processing a revision and SVN stuff seems to leak
377 my $inc = 1000;
378 my ($min, $max) = ($base, $head < $base+$inc ? $head : $base+$inc);
379 read_uuid();
380 if (defined $last_commit) {
381 unless (-e $GIT_SVN_INDEX) {
382 sys(qw/git-read-tree/, $last_commit);
383 }
384 chomp (my $x = `git-write-tree`);
385 my ($y) = (`git-cat-file commit $last_commit`
386 =~ /^tree ($sha1)/m);
387 if ($y ne $x) {
388 unlink $GIT_SVN_INDEX or croak $!;
389 sys(qw/git-read-tree/, $last_commit);
390 }
391 chomp ($x = `git-write-tree`);
392 if ($y ne $x) {
393 print STDERR "trees ($last_commit) $y != $x\n",
394 "Something is seriously wrong...\n";
395 }
396 }
397 while (1) {
398 # fork, because using SVN::Pool with get_log() still doesn't
399 # seem to help enough to keep memory usage down.
400 defined(my $pid = fork) or croak $!;
401 if (!$pid) {
402 $SVN::Error::handler = \&libsvn_skip_unknown_revs;
403
404 # Yes I'm perfectly aware that the fourth argument
405 # below is the limit revisions number. Unfortunately
406 # performance sucks with it enabled, so it's much
407 # faster to fetch revision ranges instead of relying
408 # on the limiter.
409 libsvn_get_log($SVN_LOG, '/'.$SVN_PATH,
410 $min, $max, 0, 1, 1,
411 sub {
412 my $log_msg;
413 if ($last_commit) {
414 $log_msg = libsvn_fetch(
415 $last_commit, @_);
416 $last_commit = git_commit(
417 $log_msg,
418 $last_commit,
419 @parents);
420 } else {
421 $log_msg = libsvn_new_tree(@_);
422 $last_commit = git_commit(
423 $log_msg, @parents);
424 }
425 });
426 exit 0;
427 }
428 waitpid $pid, 0;
429 croak $? if $?;
430 ($last_rev, $last_commit) = svn_grab_base_rev();
431 last if ($max >= $head);
432 $min = $max + 1;
433 $max += $inc;
434 $max = $head if ($max > $head);
435 }
436 restore_index($index);
437 return { revision => $last_rev, commit => $last_commit };
438 }
439
440 sub commit {
441 my (@commits) = @_;
442 check_upgrade_needed();
443 if ($_stdin || !@commits) {
444 print "Reading from stdin...\n";
445 @commits = ();
446 while (<STDIN>) {
447 if (/\b($sha1_short)\b/o) {
448 unshift @commits, $1;
449 }
450 }
451 }
452 my @revs;
453 foreach my $c (@commits) {
454 chomp(my @tmp = safe_qx('git-rev-parse',$c));
455 if (scalar @tmp == 1) {
456 push @revs, $tmp[0];
457 } elsif (scalar @tmp > 1) {
458 push @revs, reverse (safe_qx('git-rev-list',@tmp));
459 } else {
460 die "Failed to rev-parse $c\n";
461 }
462 }
463 chomp @revs;
464 $_use_lib ? commit_lib(@revs) : commit_cmd(@revs);
465 print "Done committing ",scalar @revs," revisions to SVN\n";
466 }
467
468 sub commit_cmd {
469 my (@revs) = @_;
470
471 chdir $SVN_WC or croak "Unable to chdir $SVN_WC: $!\n";
472 my $info = svn_info('.');
473 my $fetched = fetch();
474 if ($info->{Revision} != $fetched->{revision}) {
475 print STDERR "There are new revisions that were fetched ",
476 "and need to be merged (or acknowledged) ",
477 "before committing.\n";
478 exit 1;
479 }
480 $info = svn_info('.');
481 read_uuid($info);
482 my $last = $fetched;
483 foreach my $c (@revs) {
484 my $mods = svn_checkout_tree($last, $c);
485 if (scalar @$mods == 0) {
486 print "Skipping, no changes detected\n";
487 next;
488 }
489 $last = svn_commit_tree($last, $c);
490 }
491 }
492
493 sub commit_lib {
494 my (@revs) = @_;
495 my ($r_last, $cmt_last) = svn_grab_base_rev();
496 defined $r_last or die "Must have an existing revision to commit\n";
497 my $fetched = fetch();
498 if ($r_last != $fetched->{revision}) {
499 print STDERR "There are new revisions that were fetched ",
500 "and need to be merged (or acknowledged) ",
501 "before committing.\n",
502 "last rev: $r_last\n",
503 " current: $fetched->{revision}\n";
504 exit 1;
505 }
506 read_uuid();
507 my @lock = $SVN::Core::VERSION ge '1.2.0' ? (undef, 0) : ();
508 my $commit_msg = "$GIT_SVN_DIR/.svn-commit.tmp.$$";
509
510 my $repo;
511 ($repo, $SVN_PATH) = repo_path_split($SVN_URL);
512 set_svn_commit_env();
513 foreach my $c (@revs) {
514 my $log_msg = get_commit_message($c, $commit_msg);
515
516 # fork for each commit because there's a memory leak I
517 # can't track down... (it's probably in the SVN code)
518 defined(my $pid = open my $fh, '-|') or croak $!;
519 if (!$pid) {
520 $SVN_LOG = libsvn_connect($repo);
521 $SVN = libsvn_connect($repo);
522 my $ed = SVN::Git::Editor->new(
523 { r => $r_last,
524 ra => $SVN,
525 c => $c,
526 svn_path => $SVN_PATH
527 },
528 $SVN->get_commit_editor(
529 $log_msg->{msg},
530 sub {
531 libsvn_commit_cb(
532 @_, $c,
533 $log_msg->{msg},
534 $r_last,
535 $cmt_last)
536 },
537 @lock)
538 );
539 my $mods = libsvn_checkout_tree($cmt_last, $c, $ed);
540 if (@$mods == 0) {
541 print "No changes\nr$r_last = $cmt_last\n";
542 $ed->abort_edit;
543 } else {
544 $ed->close_edit;
545 }
546 exit 0;
547 }
548 my ($r_new, $cmt_new, $no);
549 while (<$fh>) {
550 print $_;
551 chomp;
552 if (/^r(\d+) = ($sha1)$/o) {
553 ($r_new, $cmt_new) = ($1, $2);
554 } elsif ($_ eq 'No changes') {
555 $no = 1;
556 }
557 }
558 close $fh or croak $?;
559 if (! defined $r_new && ! defined $cmt_new) {
560 unless ($no) {
561 die "Failed to parse revision information\n";
562 }
563 } else {
564 ($r_last, $cmt_last) = ($r_new, $cmt_new);
565 }
566 }
567 $ENV{LC_ALL} = 'C';
568 unlink $commit_msg;
569 }
570
571 sub dcommit {
572 my $gs = "refs/remotes/$GIT_SVN";
573 chomp(my @refs = safe_qx(qw/git-rev-list --no-merges/, "$gs..HEAD"));
574 foreach my $d (reverse @refs) {
575 if ($_dry_run) {
576 print "diff-tree $d~1 $d\n";
577 } else {
578 commit_diff("$d~1", $d);
579 }
580 }
581 return if $_dry_run;
582 fetch();
583 my @diff = safe_qx(qw/git-diff-tree HEAD/, $gs);
584 my @finish;
585 if (@diff) {
586 @finish = qw/rebase/;
587 push @finish, qw/--merge/ if $_merge;
588 push @finish, "--strategy=$_strategy" if $_strategy;
589 print STDERR "W: HEAD and $gs differ, using @finish:\n", @diff;
590 } else {
591 print "No changes between current HEAD and $gs\n",
592 "Hard resetting to the latest $gs\n";
593 @finish = qw/reset --hard/;
594 }
595 sys('git', @finish, $gs);
596 }
597
598 sub show_ignore {
599 $SVN_URL ||= file_to_s("$GIT_SVN_DIR/info/url");
600 $_use_lib ? show_ignore_lib() : show_ignore_cmd();
601 }
602
603 sub show_ignore_cmd {
604 require File::Find or die $!;
605 if (defined $_revision) {
606 die "-r/--revision option doesn't work unless the Perl SVN ",
607 "libraries are used\n";
608 }
609 chdir $SVN_WC or croak $!;
610 my %ign;
611 File::Find::find({wanted=>sub{if(lstat $_ && -d _ && -d "$_/.svn"){
612 s#^\./##;
613 @{$ign{$_}} = svn_propget_base('svn:ignore', $_);
614 }}, no_chdir=>1},'.');
615
616 print "\n# /\n";
617 foreach (@{$ign{'.'}}) { print '/',$_ if /\S/ }
618 delete $ign{'.'};
619 foreach my $i (sort keys %ign) {
620 print "\n# ",$i,"\n";
621 foreach (@{$ign{$i}}) { print '/',$i,'/',$_ if /\S/ }
622 }
623 }
624
625 sub show_ignore_lib {
626 my $repo;
627 ($repo, $SVN_PATH) = repo_path_split($SVN_URL);
628 $SVN ||= libsvn_connect($repo);
629 my $r = defined $_revision ? $_revision : $SVN->get_latest_revnum;
630 libsvn_traverse_ignore(\*STDOUT, $SVN_PATH, $r);
631 }
632
633 sub graft_branches {
634 my $gr_file = "$GIT_DIR/info/grafts";
635 my ($grafts, $comments) = read_grafts($gr_file);
636 my $gr_sha1;
637
638 if (%$grafts) {
639 # temporarily disable our grafts file to make this idempotent
640 chomp($gr_sha1 = safe_qx(qw/git-hash-object -w/,$gr_file));
641 rename $gr_file, "$gr_file~$gr_sha1" or croak $!;
642 }
643
644 my $l_map = read_url_paths();
645 my @re = map { qr/$_/is } @_opt_m if @_opt_m;
646 unless ($_no_default_regex) {
647 push @re, (qr/\b(?:merge|merging|merged)\s+with\s+([\w\.\-]+)/i,
648 qr/\b(?:merge|merging|merged)\s+([\w\.\-]+)/i,
649 qr/\b(?:from|of)\s+([\w\.\-]+)/i );
650 }
651 foreach my $u (keys %$l_map) {
652 if (@re) {
653 foreach my $p (keys %{$l_map->{$u}}) {
654 graft_merge_msg($grafts,$l_map,$u,$p,@re);
655 }
656 }
657 unless ($_no_graft_copy) {
658 if ($_use_lib) {
659 graft_file_copy_lib($grafts,$l_map,$u);
660 } else {
661 graft_file_copy_cmd($grafts,$l_map,$u);
662 }
663 }
664 }
665 graft_tree_joins($grafts);
666
667 write_grafts($grafts, $comments, $gr_file);
668 unlink "$gr_file~$gr_sha1" if $gr_sha1;
669 }
670
671 sub multi_init {
672 my $url = shift;
673 $_trunk ||= 'trunk';
674 $_trunk =~ s#/+$##;
675 $url =~ s#/+$## if $url;
676 if ($_trunk !~ m#^[a-z\+]+://#) {
677 $_trunk = '/' . $_trunk if ($_trunk !~ m#^/#);
678 unless ($url) {
679 print STDERR "E: '$_trunk' is not a complete URL ",
680 "and a separate URL is not specified\n";
681 exit 1;
682 }
683 $_trunk = $url . $_trunk;
684 }
685 if ($GIT_SVN eq 'git-svn') {
686 print "GIT_SVN_ID set to 'trunk' for $_trunk\n";
687 $GIT_SVN = $ENV{GIT_SVN_ID} = 'trunk';
688 }
689 init_vars();
690 init($_trunk);
691 complete_url_ls_init($url, $_branches, '--branches/-b', '');
692 complete_url_ls_init($url, $_tags, '--tags/-t', 'tags/');
693 }
694
695 sub multi_fetch {
696 # try to do trunk first, since branches/tags
697 # may be descended from it.
698 if (-e "$GIT_DIR/svn/trunk/info/url") {
699 fetch_child_id('trunk', @_);
700 }
701 rec_fetch('', "$GIT_DIR/svn", @_);
702 }
703
704 sub show_log {
705 my (@args) = @_;
706 my ($r_min, $r_max);
707 my $r_last = -1; # prevent dupes
708 rload_authors() if $_authors;
709 if (defined $TZ) {
710 $ENV{TZ} = $TZ;
711 } else {
712 delete $ENV{TZ};
713 }
714 if (defined $_revision) {
715 if ($_revision =~ /^(\d+):(\d+)$/) {
716 ($r_min, $r_max) = ($1, $2);
717 } elsif ($_revision =~ /^\d+$/) {
718 $r_min = $r_max = $_revision;
719 } else {
720 print STDERR "-r$_revision is not supported, use ",
721 "standard \'git log\' arguments instead\n";
722 exit 1;
723 }
724 }
725
726 my $pid = open(my $log,'-|');
727 defined $pid or croak $!;
728 if (!$pid) {
729 exec(git_svn_log_cmd($r_min,$r_max), @args) or croak $!;
730 }
731 setup_pager();
732 my (@k, $c, $d);
733
734 while (<$log>) {
735 if (/^commit ($sha1_short)/o) {
736 my $cmt = $1;
737 if ($c && cmt_showable($c) && $c->{r} != $r_last) {
738 $r_last = $c->{r};
739 process_commit($c, $r_min, $r_max, \@k) or
740 goto out;
741 }
742 $d = undef;
743 $c = { c => $cmt };
744 } elsif (/^author (.+) (\d+) ([\-\+]?\d+)$/) {
745 get_author_info($c, $1, $2, $3);
746 } elsif (/^(?:tree|parent|committer) /) {
747 # ignore
748 } elsif (/^:\d{6} \d{6} $sha1_short/o) {
749 push @{$c->{raw}}, $_;
750 } elsif (/^diff /) {
751 $d = 1;
752 push @{$c->{diff}}, $_;
753 } elsif ($d) {
754 push @{$c->{diff}}, $_;
755 } elsif (/^ (git-svn-id:.+)$/) {
756 (undef, $c->{r}, undef) = extract_metadata($1);
757 } elsif (s/^ //) {
758 push @{$c->{l}}, $_;
759 }
760 }
761 if ($c && defined $c->{r} && $c->{r} != $r_last) {
762 $r_last = $c->{r};
763 process_commit($c, $r_min, $r_max, \@k);
764 }
765 if (@k) {
766 my $swap = $r_max;
767 $r_max = $r_min;
768 $r_min = $swap;
769 process_commit($_, $r_min, $r_max) foreach reverse @k;
770 }
771 out:
772 close $log;
773 print '-' x72,"\n" unless $_incremental || $_oneline;
774 }
775
776 sub commit_diff_usage {
777 print STDERR "Usage: $0 commit-diff <tree-ish> <tree-ish> [<URL>]\n";
778 exit 1
779 }
780
781 sub commit_diff {
782 if (!$_use_lib) {
783 print STDERR "commit-diff must be used with SVN libraries\n";
784 exit 1;
785 }
786 my $ta = shift or commit_diff_usage();
787 my $tb = shift or commit_diff_usage();
788 if (!eval { $SVN_URL = shift || file_to_s("$GIT_SVN_DIR/info/url") }) {
789 print STDERR "Needed URL or usable git-svn id command-line\n";
790 commit_diff_usage();
791 }
792 if (defined $_message && defined $_file) {
793 print STDERR "Both --message/-m and --file/-F specified ",
794 "for the commit message.\n",
795 "I have no idea what you mean\n";
796 exit 1;
797 }
798 if (defined $_file) {
799 $_message = file_to_s($_file);
800 } else {
801 $_message ||= get_commit_message($tb,
802 "$GIT_DIR/.svn-commit.tmp.$$")->{msg};
803 }
804 my $repo;
805 ($repo, $SVN_PATH) = repo_path_split($SVN_URL);
806 $SVN_LOG ||= libsvn_connect($repo);
807 $SVN ||= libsvn_connect($repo);
808 my @lock = $SVN::Core::VERSION ge '1.2.0' ? (undef, 0) : ();
809 my $ed = SVN::Git::Editor->new({ r => $SVN->get_latest_revnum,
810 ra => $SVN, c => $tb,
811 svn_path => $SVN_PATH
812 },
813 $SVN->get_commit_editor($_message,
814 sub {print "Committed $_[0]\n"},@lock)
815 );
816 my $mods = libsvn_checkout_tree($ta, $tb, $ed);
817 if (@$mods == 0) {
818 print "No changes\n$ta == $tb\n";
819 $ed->abort_edit;
820 } else {
821 $ed->close_edit;
822 }
823 $_message = $_file = undef;
824 }
825
826 ########################### utility functions #########################
827
828 sub cmt_showable {
829 my ($c) = @_;
830 return 1 if defined $c->{r};
831 if ($c->{l} && $c->{l}->[-1] eq "...\n" &&
832 $c->{a_raw} =~ /\@([a-f\d\-]+)>$/) {
833 my @msg = safe_qx(qw/git-cat-file commit/, $c->{c});
834 shift @msg while ($msg[0] ne "\n");
835 shift @msg;
836 @{$c->{l}} = grep !/^git-svn-id: /, @msg;
837
838 (undef, $c->{r}, undef) = extract_metadata(
839 (grep(/^git-svn-id: /, @msg))[-1]);
840 }
841 return defined $c->{r};
842 }
843
844 sub git_svn_log_cmd {
845 my ($r_min, $r_max) = @_;
846 my @cmd = (qw/git-log --abbrev-commit --pretty=raw
847 --default/, "refs/remotes/$GIT_SVN");
848 push @cmd, '--summary' if $_verbose;
849 return @cmd unless defined $r_max;
850 if ($r_max == $r_min) {
851 push @cmd, '--max-count=1';
852 if (my $c = revdb_get($REVDB, $r_max)) {
853 push @cmd, $c;
854 }
855 } else {
856 my ($c_min, $c_max);
857 $c_max = revdb_get($REVDB, $r_max);
858 $c_min = revdb_get($REVDB, $r_min);
859 if ($c_min && $c_max) {
860 if ($r_max > $r_max) {
861 push @cmd, "$c_min..$c_max";
862 } else {
863 push @cmd, "$c_max..$c_min";
864 }
865 } elsif ($r_max > $r_min) {
866 push @cmd, $c_max;
867 } else {
868 push @cmd, $c_min;
869 }
870 }
871 return @cmd;
872 }
873
874 sub fetch_child_id {
875 my $id = shift;
876 print "Fetching $id\n";
877 my $ref = "$GIT_DIR/refs/remotes/$id";
878 defined(my $pid = open my $fh, '-|') or croak $!;
879 if (!$pid) {
880 $_repack = undef;
881 $GIT_SVN = $ENV{GIT_SVN_ID} = $id;
882 init_vars();
883 fetch(@_);
884 exit 0;
885 }
886 while (<$fh>) {
887 print $_;
888 check_repack() if (/^r\d+ = $sha1/);
889 }
890 close $fh or croak $?;
891 }
892
893 sub rec_fetch {
894 my ($pfx, $p, @args) = @_;
895 my @dir;
896 foreach (sort <$p/*>) {
897 if (-r "$_/info/url") {
898 $pfx .= '/' if $pfx && $pfx !~ m!/$!;
899 my $id = $pfx . basename $_;
900 next if $id eq 'trunk';
901 fetch_child_id($id, @args);
902 } elsif (-d $_) {
903 push @dir, $_;
904 }
905 }
906 foreach (@dir) {
907 my $x = $_;
908 $x =~ s!^\Q$GIT_DIR\E/svn/!!;
909 rec_fetch($x, $_);
910 }
911 }
912
913 sub complete_url_ls_init {
914 my ($url, $var, $switch, $pfx) = @_;
915 unless ($var) {
916 print STDERR "W: $switch not specified\n";
917 return;
918 }
919 $var =~ s#/+$##;
920 if ($var !~ m#^[a-z\+]+://#) {
921 $var = '/' . $var if ($var !~ m#^/#);
922 unless ($url) {
923 print STDERR "E: '$var' is not a complete URL ",
924 "and a separate URL is not specified\n";
925 exit 1;
926 }
927 $var = $url . $var;
928 }
929 chomp(my @ls = $_use_lib ? libsvn_ls_fullurl($var)
930 : safe_qx(qw/svn ls --non-interactive/, $var));
931 my $old = $GIT_SVN;
932 defined(my $pid = fork) or croak $!;
933 if (!$pid) {
934 foreach my $u (map { "$var/$_" } (grep m!/$!, @ls)) {
935 $u =~ s#/+$##;
936 if ($u !~ m!\Q$var\E/(.+)$!) {
937 print STDERR "W: Unrecognized URL: $u\n";
938 die "This should never happen\n";
939 }
940 my $id = $pfx.$1;
941 print "init $u => $id\n";
942 $GIT_SVN = $ENV{GIT_SVN_ID} = $id;
943 init_vars();
944 init($u);
945 }
946 exit 0;
947 }
948 waitpid $pid, 0;
949 croak $? if $?;
950 }
951
952 sub common_prefix {
953 my $paths = shift;
954 my %common;
955 foreach (@$paths) {
956 my @tmp = split m#/#, $_;
957 my $p = '';
958 while (my $x = shift @tmp) {
959 $p .= "/$x";
960 $common{$p} ||= 0;
961 $common{$p}++;
962 }
963 }
964 foreach (sort {length $b <=> length $a} keys %common) {
965 if ($common{$_} == @$paths) {
966 return $_;
967 }
968 }
969 return '';
970 }
971
972 # grafts set here are 'stronger' in that they're based on actual tree
973 # matches, and won't be deleted from merge-base checking in write_grafts()
974 sub graft_tree_joins {
975 my $grafts = shift;
976 map_tree_joins() if (@_branch_from && !%tree_map);
977 return unless %tree_map;
978
979 git_svn_each(sub {
980 my $i = shift;
981 defined(my $pid = open my $fh, '-|') or croak $!;
982 if (!$pid) {
983 exec qw/git-rev-list --pretty=raw/,
984 "refs/remotes/$i" or croak $!;
985 }
986 while (<$fh>) {
987 next unless /^commit ($sha1)$/o;
988 my $c = $1;
989 my ($t) = (<$fh> =~ /^tree ($sha1)$/o);
990 next unless $tree_map{$t};
991
992 my $l;
993 do {
994 $l = readline $fh;
995 } until ($l =~ /^committer (?:.+) (\d+) ([\-\+]?\d+)$/);
996
997 my ($s, $tz) = ($1, $2);
998 if ($tz =~ s/^\+//) {
999 $s += tz_to_s_offset($tz);
1000 } elsif ($tz =~ s/^\-//) {
1001 $s -= tz_to_s_offset($tz);
1002 }
1003
1004 my ($url_a, $r_a, $uuid_a) = cmt_metadata($c);
1005
1006 foreach my $p (@{$tree_map{$t}}) {
1007 next if $p eq $c;
1008 my $mb = eval {
1009 safe_qx('git-merge-base', $c, $p)
1010 };
1011 next unless ($@ || $?);
1012 if (defined $r_a) {
1013 # see if SVN says it's a relative
1014 my ($url_b, $r_b, $uuid_b) =
1015 cmt_metadata($p);
1016 next if (defined $url_b &&
1017 defined $url_a &&
1018 ($url_a eq $url_b) &&
1019 ($uuid_a eq $uuid_b));
1020 if ($uuid_a eq $uuid_b) {
1021 if ($r_b < $r_a) {
1022 $grafts->{$c}->{$p} = 2;
1023 next;
1024 } elsif ($r_b > $r_a) {
1025 $grafts->{$p}->{$c} = 2;
1026 next;
1027 }
1028 }
1029 }
1030 my $ct = get_commit_time($p);
1031 if ($ct < $s) {
1032 $grafts->{$c}->{$p} = 2;
1033 } elsif ($ct > $s) {
1034 $grafts->{$p}->{$c} = 2;
1035 }
1036 # what should we do when $ct == $s ?
1037 }
1038 }
1039 close $fh or croak $?;
1040 });
1041 }
1042
1043 # this isn't funky-filename safe, but good enough for now...
1044 sub graft_file_copy_cmd {
1045 my ($grafts, $l_map, $u) = @_;
1046 my $paths = $l_map->{$u};
1047 my $pfx = common_prefix([keys %$paths]);
1048 $SVN_URL ||= $u.$pfx;
1049 my $pid = open my $fh, '-|';
1050 defined $pid or croak $!;
1051 unless ($pid) {
1052 my @exec = qw/svn log -v/;
1053 push @exec, "-r$_revision" if defined $_revision;
1054 exec @exec, $u.$pfx or croak $!;
1055 }
1056 my ($r, $mp) = (undef, undef);
1057 while (<$fh>) {
1058 chomp;
1059 if (/^\-{72}$/) {
1060 $mp = $r = undef;
1061 } elsif (/^r(\d+) \| /) {
1062 $r = $1 unless defined $r;
1063 } elsif (/^Changed paths:/) {
1064 $mp = 1;
1065 } elsif ($mp && m#^ [AR] /(\S.*?) \(from /(\S+?):(\d+)\)$#) {
1066 my ($p1, $p0, $r0) = ($1, $2, $3);
1067 my $c = find_graft_path_commit($paths, $p1, $r);
1068 next unless $c;
1069 find_graft_path_parents($grafts, $paths, $c, $p0, $r0);
1070 }
1071 }
1072 }
1073
1074 sub graft_file_copy_lib {
1075 my ($grafts, $l_map, $u) = @_;
1076 my $tree_paths = $l_map->{$u};
1077 my $pfx = common_prefix([keys %$tree_paths]);
1078 my ($repo, $path) = repo_path_split($u.$pfx);
1079 $SVN_LOG ||= libsvn_connect($repo);
1080 $SVN ||= libsvn_connect($repo);
1081
1082 my ($base, $head) = libsvn_parse_revision();
1083 my $inc = 1000;
1084 my ($min, $max) = ($base, $head < $base+$inc ? $head : $base+$inc);
1085 my $eh = $SVN::Error::handler;
1086 $SVN::Error::handler = \&libsvn_skip_unknown_revs;
1087 while (1) {
1088 my $pool = SVN::Pool->new;
1089 libsvn_get_log($SVN_LOG, "/$path", $min, $max, 0, 1, 1,
1090 sub {
1091 libsvn_graft_file_copies($grafts, $tree_paths,
1092 $path, @_);
1093 }, $pool);
1094 $pool->clear;
1095 last if ($max >= $head);
1096 $min = $max + 1;
1097 $max += $inc;
1098 $max = $head if ($max > $head);
1099 }
1100 $SVN::Error::handler = $eh;
1101 }
1102
1103 sub process_merge_msg_matches {
1104 my ($grafts, $l_map, $u, $p, $c, @matches) = @_;
1105 my (@strong, @weak);
1106 foreach (@matches) {
1107 # merging with ourselves is not interesting
1108 next if $_ eq $p;
1109 if ($l_map->{$u}->{$_}) {
1110 push @strong, $_;
1111 } else {
1112 push @weak, $_;
1113 }
1114 }
1115 foreach my $w (@weak) {
1116 last if @strong;
1117 # no exact match, use branch name as regexp.
1118 my $re = qr/\Q$w\E/i;
1119 foreach (keys %{$l_map->{$u}}) {
1120 if (/$re/) {
1121 push @strong, $l_map->{$u}->{$_};
1122 last;
1123 }
1124 }
1125 last if @strong;
1126 $w = basename($w);
1127 $re = qr/\Q$w\E/i;
1128 foreach (keys %{$l_map->{$u}}) {
1129 if (/$re/) {
1130 push @strong, $l_map->{$u}->{$_};
1131 last;
1132 }
1133 }
1134 }
1135 my ($rev) = ($c->{m} =~ /^git-svn-id:\s(?:\S+?)\@(\d+)
1136 \s(?:[a-f\d\-]+)$/xsm);
1137 unless (defined $rev) {
1138 ($rev) = ($c->{m} =~/^git-svn-id:\s(\d+)
1139 \@(?:[a-f\d\-]+)/xsm);
1140 return unless defined $rev;
1141 }
1142 foreach my $m (@strong) {
1143 my ($r0, $s0) = find_rev_before($rev, $m, 1);
1144 $grafts->{$c->{c}}->{$s0} = 1 if defined $s0;
1145 }
1146 }
1147
1148 sub graft_merge_msg {
1149 my ($grafts, $l_map, $u, $p, @re) = @_;
1150
1151 my $x = $l_map->{$u}->{$p};
1152 my $rl = rev_list_raw($x);
1153 while (my $c = next_rev_list_entry($rl)) {
1154 foreach my $re (@re) {
1155 my (@br) = ($c->{m} =~ /$re/g);
1156 next unless @br;
1157 process_merge_msg_matches($grafts,$l_map,$u,$p,$c,@br);
1158 }
1159 }
1160 }
1161
1162 sub read_uuid {
1163 return if $SVN_UUID;
1164 if ($_use_lib) {
1165 my $pool = SVN::Pool->new;
1166 $SVN_UUID = $SVN->get_uuid($pool);
1167 $pool->clear;
1168 } else {
1169 my $info = shift || svn_info('.');
1170 $SVN_UUID = $info->{'Repository UUID'} or
1171 croak "Repository UUID unreadable\n";
1172 }
1173 }
1174
1175 sub quiet_run {
1176 my $pid = fork;
1177 defined $pid or croak $!;
1178 if (!$pid) {
1179 open my $null, '>', '/dev/null' or croak $!;
1180 open STDERR, '>&', $null or croak $!;
1181 open STDOUT, '>&', $null or croak $!;
1182 exec @_ or croak $!;
1183 }
1184 waitpid $pid, 0;
1185 return $?;
1186 }
1187
1188 sub repo_path_split {
1189 my $full_url = shift;
1190 $full_url =~ s#/+$##;
1191
1192 foreach (@repo_path_split_cache) {
1193 if ($full_url =~ s#$_##) {
1194 my $u = $1;
1195 $full_url =~ s#^/+##;
1196 return ($u, $full_url);
1197 }
1198 }
1199
1200 if ($_use_lib) {
1201 my $tmp = libsvn_connect($full_url);
1202 my $url = $tmp->get_repos_root;
1203 $full_url =~ s#^\Q$url\E/*##;
1204 push @repo_path_split_cache, qr/^(\Q$url\E)/;
1205 return ($url, $full_url);
1206 } else {
1207 my ($url, $path) = ($full_url =~ m!^([a-z\+]+://[^/]*)(.*)$!i);
1208 $path =~ s#^/+##;
1209 my @paths = split(m#/+#, $path);
1210 while (quiet_run(qw/svn ls --non-interactive/, $url)) {
1211 my $n = shift @paths || last;
1212 $url .= "/$n";
1213 }
1214 push @repo_path_split_cache, qr/^(\Q$url\E)/;
1215 $path = join('/',@paths);
1216 return ($url, $path);
1217 }
1218 }
1219
1220 sub setup_git_svn {
1221 defined $SVN_URL or croak "SVN repository location required\n";
1222 unless (-d $GIT_DIR) {
1223 croak "GIT_DIR=$GIT_DIR does not exist!\n";
1224 }
1225 mkpath([$GIT_SVN_DIR]);
1226 mkpath(["$GIT_SVN_DIR/info"]);
1227 open my $fh, '>>',$REVDB or croak $!;
1228 close $fh;
1229 s_to_file($SVN_URL,"$GIT_SVN_DIR/info/url");
1230
1231 }
1232
1233 sub assert_svn_wc_clean {
1234 return if $_use_lib;
1235 my ($svn_rev) = @_;
1236 croak "$svn_rev is not an integer!\n" unless ($svn_rev =~ /^\d+$/);
1237 my $lcr = svn_info('.')->{'Last Changed Rev'};
1238 if ($svn_rev != $lcr) {
1239 print STDERR "Checking for copy-tree ... ";
1240 my @diff = grep(/^Index: /,(safe_qx(qw(svn diff),
1241 "-r$lcr:$svn_rev")));
1242 if (@diff) {
1243 croak "Nope! Expected r$svn_rev, got r$lcr\n";
1244 } else {
1245 print STDERR "OK!\n";
1246 }
1247 }
1248 my @status = grep(!/^Performing status on external/,(`svn status`));
1249 @status = grep(!/^\s*$/,@status);
1250 if (scalar @status) {
1251 print STDERR "Tree ($SVN_WC) is not clean:\n";
1252 print STDERR $_ foreach @status;
1253 croak;
1254 }
1255 }
1256
1257 sub get_tree_from_treeish {
1258 my ($treeish) = @_;
1259 croak "Not a sha1: $treeish\n" unless $treeish =~ /^$sha1$/o;
1260 chomp(my $type = `git-cat-file -t $treeish`);
1261 my $expected;
1262 while ($type eq 'tag') {
1263 chomp(($treeish, $type) = `git-cat-file tag $treeish`);
1264 }
1265 if ($type eq 'commit') {
1266 $expected = (grep /^tree /,`git-cat-file commit $treeish`)[0];
1267 ($expected) = ($expected =~ /^tree ($sha1)$/);
1268 die "Unable to get tree from $treeish\n" unless $expected;
1269 } elsif ($type eq 'tree') {
1270 $expected = $treeish;
1271 } else {
1272 die "$treeish is a $type, expected tree, tag or commit\n";
1273 }
1274 return $expected;
1275 }
1276
1277 sub assert_tree {
1278 return if $_use_lib;
1279 my ($treeish) = @_;
1280 my $expected = get_tree_from_treeish($treeish);
1281
1282 my $tmpindex = $GIT_SVN_INDEX.'.assert-tmp';
1283 if (-e $tmpindex) {
1284 unlink $tmpindex or croak $!;
1285 }
1286 my $old_index = set_index($tmpindex);
1287 index_changes(1);
1288 chomp(my $tree = `git-write-tree`);
1289 restore_index($old_index);
1290 if ($tree ne $expected) {
1291 croak "Tree mismatch, Got: $tree, Expected: $expected\n";
1292 }
1293 unlink $tmpindex;
1294 }
1295
1296 sub parse_diff_tree {
1297 my $diff_fh = shift;
1298 local $/ = "\0";
1299 my $state = 'meta';
1300 my @mods;
1301 while (<$diff_fh>) {
1302 chomp $_; # this gets rid of the trailing "\0"
1303 if ($state eq 'meta' && /^:(\d{6})\s(\d{6})\s
1304 $sha1\s($sha1)\s([MTCRAD])\d*$/xo) {
1305 push @mods, { mode_a => $1, mode_b => $2,
1306 sha1_b => $3, chg => $4 };
1307 if ($4 =~ /^(?:C|R)$/) {
1308 $state = 'file_a';
1309 } else {
1310 $state = 'file_b';
1311 }
1312 } elsif ($state eq 'file_a') {
1313 my $x = $mods[$#mods] or croak "Empty array\n";
1314 if ($x->{chg} !~ /^(?:C|R)$/) {
1315 croak "Error parsing $_, $x->{chg}\n";
1316 }
1317 $x->{file_a} = $_;
1318 $state = 'file_b';
1319 } elsif ($state eq 'file_b') {
1320 my $x = $mods[$#mods] or croak "Empty array\n";
1321 if (exists $x->{file_a} && $x->{chg} !~ /^(?:C|R)$/) {
1322 croak "Error parsing $_, $x->{chg}\n";
1323 }
1324 if (!exists $x->{file_a} && $x->{chg} =~ /^(?:C|R)$/) {
1325 croak "Error parsing $_, $x->{chg}\n";
1326 }
1327 $x->{file_b} = $_;
1328 $state = 'meta';
1329 } else {
1330 croak "Error parsing $_\n";
1331 }
1332 }
1333 close $diff_fh or croak $?;
1334
1335 return \@mods;
1336 }
1337
1338 sub svn_check_prop_executable {
1339 my $m = shift;
1340 return if -l $m->{file_b};
1341 if ($m->{mode_b} =~ /755$/) {
1342 chmod((0755 &~ umask),$m->{file_b}) or croak $!;
1343 if ($m->{mode_a} !~ /755$/) {
1344 sys(qw(svn propset svn:executable 1), $m->{file_b});
1345 }
1346 -x $m->{file_b} or croak "$m->{file_b} is not executable!\n";
1347 } elsif ($m->{mode_b} !~ /755$/ && $m->{mode_a} =~ /755$/) {
1348 sys(qw(svn propdel svn:executable), $m->{file_b});
1349 chmod((0644 &~ umask),$m->{file_b}) or croak $!;
1350 -x $m->{file_b} and croak "$m->{file_b} is executable!\n";
1351 }
1352 }
1353
1354 sub svn_ensure_parent_path {
1355 my $dir_b = dirname(shift);
1356 svn_ensure_parent_path($dir_b) if ($dir_b ne File::Spec->curdir);
1357 mkpath([$dir_b]) unless (-d $dir_b);
1358 sys(qw(svn add -N), $dir_b) unless (-d "$dir_b/.svn");
1359 }
1360
1361 sub precommit_check {
1362 my $mods = shift;
1363 my (%rm_file, %rmdir_check, %added_check);
1364
1365 my %o = ( D => 0, R => 1, C => 2, A => 3, M => 3, T => 3 );
1366 foreach my $m (sort { $o{$a->{chg}} <=> $o{$b->{chg}} } @$mods) {
1367 if ($m->{chg} eq 'R') {
1368 if (-d $m->{file_b}) {
1369 err_dir_to_file("$m->{file_a} => $m->{file_b}");
1370 }
1371 # dir/$file => dir/file/$file
1372 my $dirname = dirname($m->{file_b});
1373 while ($dirname ne File::Spec->curdir) {
1374 if ($dirname ne $m->{file_a}) {
1375 $dirname = dirname($dirname);
1376 next;
1377 }
1378 err_file_to_dir("$m->{file_a} => $m->{file_b}");
1379 }
1380 # baz/zzz => baz (baz is a file)
1381 $dirname = dirname($m->{file_a});
1382 while ($dirname ne File::Spec->curdir) {
1383 if ($dirname ne $m->{file_b}) {
1384 $dirname = dirname($dirname);
1385 next;
1386 }
1387 err_dir_to_file("$m->{file_a} => $m->{file_b}");
1388 }
1389 }
1390 if ($m->{chg} =~ /^(D|R)$/) {
1391 my $t = $1 eq 'D' ? 'file_b' : 'file_a';
1392 $rm_file{ $m->{$t} } = 1;
1393 my $dirname = dirname( $m->{$t} );
1394 my $basename = basename( $m->{$t} );
1395 $rmdir_check{$dirname}->{$basename} = 1;
1396 } elsif ($m->{chg} =~ /^(?:A|C)$/) {
1397 if (-d $m->{file_b}) {
1398 err_dir_to_file($m->{file_b});
1399 }
1400 my $dirname = dirname( $m->{file_b} );
1401 my $basename = basename( $m->{file_b} );
1402 $added_check{$dirname}->{$basename} = 1;
1403 while ($dirname ne File::Spec->curdir) {
1404 if ($rm_file{$dirname}) {
1405 err_file_to_dir($m->{file_b});
1406 }
1407 $dirname = dirname $dirname;
1408 }
1409 }
1410 }
1411 return (\%rmdir_check, \%added_check);
1412
1413 sub err_dir_to_file {
1414 my $file = shift;
1415 print STDERR "Node change from directory to file ",
1416 "is not supported by Subversion: ",$file,"\n";
1417 exit 1;
1418 }
1419 sub err_file_to_dir {
1420 my $file = shift;
1421 print STDERR "Node change from file to directory ",
1422 "is not supported by Subversion: ",$file,"\n";
1423 exit 1;
1424 }
1425 }
1426
1427
1428 sub get_diff {
1429 my ($from, $treeish) = @_;
1430 assert_tree($from);
1431 print "diff-tree $from $treeish\n";
1432 my $pid = open my $diff_fh, '-|';
1433 defined $pid or croak $!;
1434 if ($pid == 0) {
1435 my @diff_tree = qw(git-diff-tree -z -r);
1436 if ($_cp_similarity) {
1437 push @diff_tree, "-C$_cp_similarity";
1438 } else {
1439 push @diff_tree, '-C';
1440 }
1441 push @diff_tree, '--find-copies-harder' if $_find_copies_harder;
1442 push @diff_tree, "-l$_l" if defined $_l;
1443 exec(@diff_tree, $from, $treeish) or croak $!;
1444 }
1445 return parse_diff_tree($diff_fh);
1446 }
1447
1448 sub svn_checkout_tree {
1449 my ($from, $treeish) = @_;
1450 my $mods = get_diff($from->{commit}, $treeish);
1451 return $mods unless (scalar @$mods);
1452 my ($rm, $add) = precommit_check($mods);
1453
1454 my %o = ( D => 1, R => 0, C => -1, A => 3, M => 3, T => 3 );
1455 foreach my $m (sort { $o{$a->{chg}} <=> $o{$b->{chg}} } @$mods) {
1456 if ($m->{chg} eq 'C') {
1457 svn_ensure_parent_path( $m->{file_b} );
1458 sys(qw(svn cp), $m->{file_a}, $m->{file_b});
1459 apply_mod_line_blob($m);
1460 svn_check_prop_executable($m);
1461 } elsif ($m->{chg} eq 'D') {
1462 sys(qw(svn rm --force), $m->{file_b});
1463 } elsif ($m->{chg} eq 'R') {
1464 svn_ensure_parent_path( $m->{file_b} );
1465 sys(qw(svn mv --force), $m->{file_a}, $m->{file_b});
1466 apply_mod_line_blob($m);
1467 svn_check_prop_executable($m);
1468 } elsif ($m->{chg} eq 'M') {
1469 apply_mod_line_blob($m);
1470 svn_check_prop_executable($m);
1471 } elsif ($m->{chg} eq 'T') {
1472 sys(qw(svn rm --force),$m->{file_b});
1473 apply_mod_line_blob($m);
1474 sys(qw(svn add), $m->{file_b});
1475 svn_check_prop_executable($m);
1476 } elsif ($m->{chg} eq 'A') {
1477 svn_ensure_parent_path( $m->{file_b} );
1478 apply_mod_line_blob($m);
1479 sys(qw(svn add), $m->{file_b});
1480 svn_check_prop_executable($m);
1481 } else {
1482 croak "Invalid chg: $m->{chg}\n";
1483 }
1484 }
1485
1486 assert_tree($treeish);
1487 if ($_rmdir) { # remove empty directories
1488 handle_rmdir($rm, $add);
1489 }
1490 assert_tree($treeish);
1491 return $mods;
1492 }
1493
1494 sub libsvn_checkout_tree {
1495 my ($from, $treeish, $ed) = @_;
1496 my $mods = get_diff($from, $treeish);
1497 return $mods unless (scalar @$mods);
1498 my %o = ( D => 1, R => 0, C => -1, A => 3, M => 3, T => 3 );
1499 foreach my $m (sort { $o{$a->{chg}} <=> $o{$b->{chg}} } @$mods) {
1500 my $f = $m->{chg};
1501 if (defined $o{$f}) {
1502 $ed->$f($m, $_q);
1503 } else {
1504 croak "Invalid change type: $f\n";
1505 }
1506 }
1507 $ed->rmdirs($_q) if $_rmdir;
1508 return $mods;
1509 }
1510
1511 # svn ls doesn't work with respect to the current working tree, but what's
1512 # in the repository. There's not even an option for it... *sigh*
1513 # (added files don't show up and removed files remain in the ls listing)
1514 sub svn_ls_current {
1515 my ($dir, $rm, $add) = @_;
1516 chomp(my @ls = safe_qx('svn','ls',$dir));
1517 my @ret = ();
1518 foreach (@ls) {
1519 s#/$##; # trailing slashes are evil
1520 push @ret, $_ unless $rm->{$dir}->{$_};
1521 }
1522 if (exists $add->{$dir}) {
1523 push @ret, keys %{$add->{$dir}};
1524 }
1525 return \@ret;
1526 }
1527
1528 sub handle_rmdir {
1529 my ($rm, $add) = @_;
1530
1531 foreach my $dir (sort {length $b <=> length $a} keys %$rm) {
1532 my $ls = svn_ls_current($dir, $rm, $add);
1533 next if (scalar @$ls);
1534 sys(qw(svn rm --force),$dir);
1535
1536 my $dn = dirname $dir;
1537 $rm->{ $dn }->{ basename $dir } = 1;
1538 $ls = svn_ls_current($dn, $rm, $add);
1539 while (scalar @$ls == 0 && $dn ne File::Spec->curdir) {
1540 sys(qw(svn rm --force),$dn);
1541 $dir = basename $dn;
1542 $dn = dirname $dn;
1543 $rm->{ $dn }->{ $dir } = 1;
1544 $ls = svn_ls_current($dn, $rm, $add);
1545 }
1546 }
1547 }
1548
1549 sub get_commit_message {
1550 my ($commit, $commit_msg) = (@_);
1551 my %log_msg = ( msg => '' );
1552 open my $msg, '>', $commit_msg or croak $!;
1553
1554 chomp(my $type = `git-cat-file -t $commit`);
1555 if ($type eq 'commit' || $type eq 'tag') {
1556 my $pid = open my $msg_fh, '-|';
1557 defined $pid or croak $!;
1558
1559 if ($pid == 0) {
1560 exec('git-cat-file', $type, $commit) or croak $!;
1561 }
1562 my $in_msg = 0;
1563 while (<$msg_fh>) {
1564 if (!$in_msg) {
1565 $in_msg = 1 if (/^\s*$/);
1566 } elsif (/^git-svn-id: /) {
1567 # skip this, we regenerate the correct one
1568 # on re-fetch anyways
1569 } else {
1570 print $msg $_ or croak $!;
1571 }
1572 }
1573 close $msg_fh or croak $?;
1574 }
1575 close $msg or croak $!;
1576
1577 if ($_edit || ($type eq 'tree')) {
1578 my $editor = $ENV{VISUAL} || $ENV{EDITOR} || 'vi';
1579 system($editor, $commit_msg);
1580 }
1581
1582 # file_to_s removes all trailing newlines, so just use chomp() here:
1583 open $msg, '<', $commit_msg or croak $!;
1584 { local $/; chomp($log_msg{msg} = <$msg>); }
1585 close $msg or croak $!;
1586
1587 return \%log_msg;
1588 }
1589
1590 sub set_svn_commit_env {
1591 if (defined $LC_ALL) {
1592 $ENV{LC_ALL} = $LC_ALL;
1593 } else {
1594 delete $ENV{LC_ALL};
1595 }
1596 }
1597
1598 sub svn_commit_tree {
1599 my ($last, $commit) = @_;
1600 my $commit_msg = "$GIT_SVN_DIR/.svn-commit.tmp.$$";
1601 my $log_msg = get_commit_message($commit, $commit_msg);
1602 my ($oneline) = ($log_msg->{msg} =~ /([^\n\r]+)/);
1603 print "Committing $commit: $oneline\n";
1604
1605 set_svn_commit_env();
1606 my @ci_output = safe_qx(qw(svn commit -F),$commit_msg);
1607 $ENV{LC_ALL} = 'C';
1608 unlink $commit_msg;
1609 my ($committed) = ($ci_output[$#ci_output] =~ /(\d+)/);
1610 if (!defined $committed) {
1611 my $out = join("\n",@ci_output);
1612 print STDERR "W: Trouble parsing \`svn commit' output:\n\n",
1613 $out, "\n\nAssuming English locale...";
1614 ($committed) = ($out =~ /^Committed revision \d+\./sm);
1615 defined $committed or die " FAILED!\n",
1616 "Commit output failed to parse committed revision!\n",
1617 print STDERR " OK\n";
1618 }
1619
1620 my @svn_up = qw(svn up);
1621 push @svn_up, '--ignore-externals' unless $_no_ignore_ext;
1622 if ($_optimize_commits && ($committed == ($last->{revision} + 1))) {
1623 push @svn_up, "-r$committed";
1624 sys(@svn_up);
1625 my $info = svn_info('.');
1626 my $date = $info->{'Last Changed Date'} or die "Missing date\n";
1627 if ($info->{'Last Changed Rev'} != $committed) {
1628 croak "$info->{'Last Changed Rev'} != $committed\n"
1629 }
1630 my ($Y,$m,$d,$H,$M,$S,$tz) = ($date =~
1631 /(\d{4})\-(\d\d)\-(\d\d)\s
1632 (\d\d)\:(\d\d)\:(\d\d)\s([\-\+]\d+)/x)
1633 or croak "Failed to parse date: $date\n";
1634 $log_msg->{date} = "$tz $Y-$m-$d $H:$M:$S";
1635 $log_msg->{author} = $info->{'Last Changed Author'};
1636 $log_msg->{revision} = $committed;
1637 $log_msg->{msg} .= "\n";
1638 $log_msg->{parents} = [ $last->{commit} ];
1639 $log_msg->{commit} = git_commit($log_msg, $commit);
1640 return $log_msg;
1641 }
1642 # resync immediately
1643 push @svn_up, "-r$last->{revision}";
1644 sys(@svn_up);
1645 return fetch("$committed=$commit");
1646 }
1647
1648 sub rev_list_raw {
1649 my (@args) = @_;
1650 my $pid = open my $fh, '-|';
1651 defined $pid or croak $!;
1652 if (!$pid) {
1653 exec(qw/git-rev-list --pretty=raw/, @args) or croak $!;
1654 }
1655 return { fh => $fh, t => { } };
1656 }
1657
1658 sub next_rev_list_entry {
1659 my $rl = shift;
1660 my $fh = $rl->{fh};
1661 my $x = $rl->{t};
1662 while (<$fh>) {
1663 if (/^commit ($sha1)$/o) {
1664 if ($x->{c}) {
1665 $rl->{t} = { c => $1 };
1666 return $x;
1667 } else {
1668 $x->{c} = $1;
1669 }
1670 } elsif (/^parent ($sha1)$/o) {
1671 $x->{p}->{$1} = 1;
1672 } elsif (s/^ //) {
1673 $x->{m} ||= '';
1674 $x->{m} .= $_;
1675 }
1676 }
1677 return ($x != $rl->{t}) ? $x : undef;
1678 }
1679
1680 # read the entire log into a temporary file (which is removed ASAP)
1681 # and store the file handle + parser state
1682 sub svn_log_raw {
1683 my (@log_args) = @_;
1684 my $log_fh = IO::File->new_tmpfile or croak $!;
1685 my $pid = fork;
1686 defined $pid or croak $!;
1687 if (!$pid) {
1688 open STDOUT, '>&', $log_fh or croak $!;
1689 exec (qw(svn log), @log_args) or croak $!
1690 }
1691 waitpid $pid, 0;
1692 croak $? if $?;
1693 seek $log_fh, 0, 0 or croak $!;
1694 return { state => 'sep', fh => $log_fh };
1695 }
1696
1697 sub next_log_entry {
1698 my $log = shift; # retval of svn_log_raw()
1699 my $ret = undef;
1700 my $fh = $log->{fh};
1701
1702 while (<$fh>) {
1703 chomp;
1704 if (/^\-{72}$/) {
1705 if ($log->{state} eq 'msg') {
1706 if ($ret->{lines}) {
1707 $ret->{msg} .= $_."\n";
1708 unless(--$ret->{lines}) {
1709 $log->{state} = 'sep';
1710 }
1711 } else {
1712 croak "Log parse error at: $_\n",
1713 $ret->{revision},
1714 "\n";
1715 }
1716 next;
1717 }
1718 if ($log->{state} ne 'sep') {
1719 croak "Log parse error at: $_\n",
1720 "state: $log->{state}\n",
1721 $ret->{revision},
1722 "\n";
1723 }
1724 $log->{state} = 'rev';
1725
1726 # if we have an empty log message, put something there:
1727 if ($ret) {
1728 $ret->{msg} ||= "\n";
1729 delete $ret->{lines};
1730 return $ret;
1731 }
1732 next;
1733 }
1734 if ($log->{state} eq 'rev' && s/^r(\d+)\s*\|\s*//) {
1735 my $rev = $1;
1736 my ($author, $date, $lines) = split(/\s*\|\s*/, $_, 3);
1737 ($lines) = ($lines =~ /(\d+)/);
1738 $date = '1970-01-01 00:00:00 +0000'
1739 if ($_ignore_nodate && $date eq '(no date)');
1740 my ($Y,$m,$d,$H,$M,$S,$tz) = ($date =~
1741 /(\d{4})\-(\d\d)\-(\d\d)\s
1742 (\d\d)\:(\d\d)\:(\d\d)\s([\-\+]\d+)/x)
1743 or croak "Failed to parse date: $date\n";
1744 $ret = { revision => $rev,
1745 date => "$tz $Y-$m-$d $H:$M:$S",
1746 author => $author,
1747 lines => $lines,
1748 msg => '' };
1749 if (defined $_authors && ! defined $users{$author}) {
1750 die "Author: $author not defined in ",
1751 "$_authors file\n";
1752 }
1753 $log->{state} = 'msg_start';
1754 next;
1755 }
1756 # skip the first blank line of the message:
1757 if ($log->{state} eq 'msg_start' && /^$/) {
1758 $log->{state} = 'msg';
1759 } elsif ($log->{state} eq 'msg') {
1760 if ($ret->{lines}) {
1761 $ret->{msg} .= $_."\n";
1762 unless (--$ret->{lines}) {
1763 $log->{state} = 'sep';
1764 }
1765 } else {
1766 croak "Log parse error at: $_\n",
1767 $ret->{revision},"\n";
1768 }
1769 }
1770 }
1771 return $ret;
1772 }
1773
1774 sub svn_info {
1775 my $url = shift || $SVN_URL;
1776
1777 my $pid = open my $info_fh, '-|';
1778 defined $pid or croak $!;
1779
1780 if ($pid == 0) {
1781 exec(qw(svn info),$url) or croak $!;
1782 }
1783
1784 my $ret = {};
1785 # only single-lines seem to exist in svn info output
1786 while (<$info_fh>) {
1787 chomp $_;
1788 if (m#^([^:]+)\s*:\s*(\S.*)$#) {
1789 $ret->{$1} = $2;
1790 push @{$ret->{-order}}, $1;
1791 }
1792 }
1793 close $info_fh or croak $?;
1794 return $ret;
1795 }
1796
1797 sub sys { system(@_) == 0 or croak $? }
1798
1799 sub do_update_index {
1800 my ($z_cmd, $cmd, $no_text_base) = @_;
1801
1802 my $z = open my $p, '-|';
1803 defined $z or croak $!;
1804 unless ($z) { exec @$z_cmd or croak $! }
1805
1806 my $pid = open my $ui, '|-';
1807 defined $pid or croak $!;
1808 unless ($pid) {
1809 exec('git-update-index',"--$cmd",'-z','--stdin') or croak $!;
1810 }
1811 local $/ = "\0";
1812 while (my $x = <$p>) {
1813 chomp $x;
1814 if (!$no_text_base && lstat $x && ! -l _ &&
1815 svn_propget_base('svn:keywords', $x)) {
1816 my $mode = -x _ ? 0755 : 0644;
1817 my ($v,$d,$f) = File::Spec->splitpath($x);
1818 my $tb = File::Spec->catfile($d, '.svn', 'tmp',
1819 'text-base',"$f.svn-base");
1820 $tb =~ s#^/##;
1821 unless (-f $tb) {
1822 $tb = File::Spec->catfile($d, '.svn',
1823 'text-base',"$f.svn-base");
1824 $tb =~ s#^/##;
1825 }
1826 my @s = stat($x);
1827 unlink $x or croak $!;
1828 copy($tb, $x);
1829 chmod(($mode &~ umask), $x) or croak $!;
1830 utime $s[8], $s[9], $x;
1831 }
1832 print $ui $x,"\0";
1833 }
1834 close $ui or croak $?;
1835 }
1836
1837 sub index_changes {
1838 return if $_use_lib;
1839
1840 if (!-f "$GIT_SVN_DIR/info/exclude") {
1841 open my $fd, '>>', "$GIT_SVN_DIR/info/exclude" or croak $!;
1842 print $fd '.svn',"\n";
1843 close $fd or croak $!;
1844 }
1845 my $no_text_base = shift;
1846 do_update_index([qw/git-diff-files --name-only -z/],
1847 'remove',
1848 $no_text_base);
1849 do_update_index([qw/git-ls-files -z --others/,
1850 "--exclude-from=$GIT_SVN_DIR/info/exclude"],
1851 'add',
1852 $no_text_base);
1853 }
1854
1855 sub s_to_file {
1856 my ($str, $file, $mode) = @_;
1857 open my $fd,'>',$file or croak $!;
1858 print $fd $str,"\n" or croak $!;
1859 close $fd or croak $!;
1860 chmod ($mode &~ umask, $file) if (defined $mode);
1861 }
1862
1863 sub file_to_s {
1864 my $file = shift;
1865 open my $fd,'<',$file or croak "$!: file: $file\n";
1866 local $/;
1867 my $ret = <$fd>;
1868 close $fd or croak $!;
1869 $ret =~ s/\s*$//s;
1870 return $ret;
1871 }
1872
1873 sub assert_revision_unknown {
1874 my $r = shift;
1875 if (my $c = revdb_get($REVDB, $r)) {
1876 croak "$r = $c already exists! Why are we refetching it?";
1877 }
1878 }
1879
1880 sub trees_eq {
1881 my ($x, $y) = @_;
1882 my @x = safe_qx('git-cat-file','commit',$x);
1883 my @y = safe_qx('git-cat-file','commit',$y);
1884 if (($y[0] ne $x[0]) || $x[0] !~ /^tree $sha1\n$/
1885 || $y[0] !~ /^tree $sha1\n$/) {
1886 print STDERR "Trees not equal: $y[0] != $x[0]\n";
1887 return 0
1888 }
1889 return 1;
1890 }
1891
1892 sub git_commit {
1893 my ($log_msg, @parents) = @_;
1894 assert_revision_unknown($log_msg->{revision});
1895 map_tree_joins() if (@_branch_from && !%tree_map);
1896
1897 my (@tmp_parents, @exec_parents, %seen_parent);
1898 if (my $lparents = $log_msg->{parents}) {
1899 @tmp_parents = @$lparents
1900 }
1901 # commit parents can be conditionally bound to a particular
1902 # svn revision via: "svn_revno=commit_sha1", filter them out here:
1903 foreach my $p (@parents) {
1904 next unless defined $p;
1905 if ($p =~ /^(\d+)=($sha1_short)$/o) {
1906 if ($1 == $log_msg->{revision}) {
1907 push @tmp_parents, $2;
1908 }
1909 } else {
1910 push @tmp_parents, $p if $p =~ /$sha1_short/o;
1911 }
1912 }
1913 my $tree = $log_msg->{tree};
1914 if (!defined $tree) {
1915 my $index = set_index($GIT_SVN_INDEX);
1916 index_changes();
1917 chomp($tree = `git-write-tree`);
1918 croak $? if $?;
1919 restore_index($index);
1920 }
1921
1922 # just in case we clobber the existing ref, we still want that ref
1923 # as our parent:
1924 if (my $cur = eval { file_to_s("$GIT_DIR/refs/remotes/$GIT_SVN") }) {
1925 push @tmp_parents, $cur;
1926 }
1927
1928 if (exists $tree_map{$tree}) {
1929 foreach my $p (@{$tree_map{$tree}}) {
1930 my $skip;
1931 foreach (@tmp_parents) {
1932 # see if a common parent is found
1933 my $mb = eval {
1934 safe_qx('git-merge-base', $_, $p)
1935 };
1936 next if ($@ || $?);
1937 $skip = 1;
1938 last;
1939 }
1940 next if $skip;
1941 my ($url_p, $r_p, $uuid_p) = cmt_metadata($p);
1942 next if (($SVN_UUID eq $uuid_p) &&
1943 ($log_msg->{revision} > $r_p));
1944 next if (defined $url_p && defined $SVN_URL &&
1945 ($SVN_UUID eq $uuid_p) &&
1946 ($url_p eq $SVN_URL));
1947 push @tmp_parents, $p;
1948 }
1949 }
1950 foreach (@tmp_parents) {
1951 next if $seen_parent{$_};
1952 $seen_parent{$_} = 1;
1953 push @exec_parents, $_;
1954 # MAXPARENT is defined to 16 in commit-tree.c:
1955 last if @exec_parents > 16;
1956 }
1957
1958 set_commit_env($log_msg);
1959 my @exec = ('git-commit-tree', $tree);
1960 push @exec, '-p', $_ foreach @exec_parents;
1961 defined(my $pid = open3(my $msg_fh, my $out_fh, '>&STDERR', @exec))
1962 or croak $!;
1963 print $msg_fh $log_msg->{msg} or croak $!;
1964 unless ($_no_metadata) {
1965 print $msg_fh "\ngit-svn-id: $SVN_URL\@$log_msg->{revision}",
1966 " $SVN_UUID\n" or croak $!;
1967 }
1968 $msg_fh->flush == 0 or croak $!;
1969 close $msg_fh or croak $!;
1970 chomp(my $commit = do { local $/; <$out_fh> });
1971 close $out_fh or croak $!;
1972 waitpid $pid, 0;
1973 croak $? if $?;
1974 if ($commit !~ /^$sha1$/o) {
1975 die "Failed to commit, invalid sha1: $commit\n";
1976 }
1977 sys('git-update-ref',"refs/remotes/$GIT_SVN",$commit);
1978 revdb_set($REVDB, $log_msg->{revision}, $commit);
1979
1980 # this output is read via pipe, do not change:
1981 print "r$log_msg->{revision} = $commit\n";
1982 check_repack();
1983 return $commit;
1984 }
1985
1986 sub check_repack {
1987 if ($_repack && (--$_repack_nr == 0)) {
1988 $_repack_nr = $_repack;
1989 sys("git repack $_repack_flags");
1990 }
1991 }
1992
1993 sub set_commit_env {
1994 my ($log_msg) = @_;
1995 my $author = $log_msg->{author};
1996 if (!defined $author || length $author == 0) {
1997 $author = '(no author)';
1998 }
1999 my ($name,$email) = defined $users{$author} ? @{$users{$author}}
2000 : ($author,"$author\@$SVN_UUID");
2001 $ENV{GIT_AUTHOR_NAME} = $ENV{GIT_COMMITTER_NAME} = $name;
2002 $ENV{GIT_AUTHOR_EMAIL} = $ENV{GIT_COMMITTER_EMAIL} = $email;
2003 $ENV{GIT_AUTHOR_DATE} = $ENV{GIT_COMMITTER_DATE} = $log_msg->{date};
2004 }
2005
2006 sub apply_mod_line_blob {
2007 my $m = shift;
2008 if ($m->{mode_b} =~ /^120/) {
2009 blob_to_symlink($m->{sha1_b}, $m->{file_b});
2010 } else {
2011 blob_to_file($m->{sha1_b}, $m->{file_b});
2012 }
2013 }
2014
2015 sub blob_to_symlink {
2016 my ($blob, $link) = @_;
2017 defined $link or croak "\$link not defined!\n";
2018 croak "Not a sha1: $blob\n" unless $blob =~ /^$sha1$/o;
2019 if (-l $link || -f _) {
2020 unlink $link or croak $!;
2021 }
2022
2023 my $dest = `git-cat-file blob $blob`; # no newline, so no chomp
2024 symlink $dest, $link or croak $!;
2025 }
2026
2027 sub blob_to_file {
2028 my ($blob, $file) = @_;
2029 defined $file or croak "\$file not defined!\n";
2030 croak "Not a sha1: $blob\n" unless $blob =~ /^$sha1$/o;
2031 if (-l $file || -f _) {
2032 unlink $file or croak $!;
2033 }
2034
2035 open my $blob_fh, '>', $file or croak "$!: $file\n";
2036 my $pid = fork;
2037 defined $pid or croak $!;
2038
2039 if ($pid == 0) {
2040 open STDOUT, '>&', $blob_fh or croak $!;
2041 exec('git-cat-file','blob',$blob) or croak $!;
2042 }
2043 waitpid $pid, 0;
2044 croak $? if $?;
2045
2046 close $blob_fh or croak $!;
2047 }
2048
2049 sub safe_qx {
2050 my $pid = open my $child, '-|';
2051 defined $pid or croak $!;
2052 if ($pid == 0) {
2053 exec(@_) or croak $!;
2054 }
2055 my @ret = (<$child>);
2056 close $child or croak $?;
2057 die $? if $?; # just in case close didn't error out
2058 return wantarray ? @ret : join('',@ret);
2059 }
2060
2061 sub svn_compat_check {
2062 if ($_follow_parent) {
2063 print STDERR 'E: --follow-parent functionality is only ',
2064 "available when SVN libraries are used\n";
2065 exit 1;
2066 }
2067 my @co_help = safe_qx(qw(svn co -h));
2068 unless (grep /ignore-externals/,@co_help) {
2069 print STDERR "W: Installed svn version does not support ",
2070 "--ignore-externals\n";
2071 $_no_ignore_ext = 1;
2072 }
2073 if (grep /usage: checkout URL\[\@REV\]/,@co_help) {
2074 $_svn_co_url_revs = 1;
2075 }
2076 if (grep /\[TARGET\[\@REV\]\.\.\.\]/, `svn propget -h`) {
2077 $_svn_pg_peg_revs = 1;
2078 }
2079
2080 # I really, really hope nobody hits this...
2081 unless (grep /stop-on-copy/, (safe_qx(qw(svn log -h)))) {
2082 print STDERR <<'';
2083 W: The installed svn version does not support the --stop-on-copy flag in
2084 the log command.
2085 Lets hope the directory you're tracking is not a branch or tag
2086 and was never moved within the repository...
2087
2088 $_no_stop_copy = 1;
2089 }
2090 }
2091
2092 # *sigh*, new versions of svn won't honor -r<rev> without URL@<rev>,
2093 # (and they won't honor URL@<rev> without -r<rev>, too!)
2094 sub svn_cmd_checkout {
2095 my ($url, $rev, $dir) = @_;
2096 my @cmd = ('svn','co', "-r$rev");
2097 push @cmd, '--ignore-externals' unless $_no_ignore_ext;
2098 $url .= "\@$rev" if $_svn_co_url_revs;
2099 sys(@cmd, $url, $dir);
2100 }
2101
2102 sub check_upgrade_needed {
2103 if (!-r $REVDB) {
2104 -d $GIT_SVN_DIR or mkpath([$GIT_SVN_DIR]);
2105 open my $fh, '>>',$REVDB or croak $!;
2106 close $fh;
2107 }
2108 my $old = eval {
2109 my $pid = open my $child, '-|';
2110 defined $pid or croak $!;
2111 if ($pid == 0) {
2112 close STDERR;
2113 exec('git-rev-parse',"$GIT_SVN-HEAD") or croak $!;
2114 }
2115 my @ret = (<$child>);
2116 close $child or croak $?;
2117 die $? if $?; # just in case close didn't error out
2118 return wantarray ? @ret : join('',@ret);
2119 };
2120 return unless $old;
2121 my $head = eval { safe_qx('git-rev-parse',"refs/remotes/$GIT_SVN") };
2122 if ($@ || !$head) {
2123 print STDERR "Please run: $0 rebuild --upgrade\n";
2124 exit 1;
2125 }
2126 }
2127
2128 # fills %tree_map with a reverse mapping of trees to commits. Useful
2129 # for finding parents to commit on.
2130 sub map_tree_joins {
2131 my %seen;
2132 foreach my $br (@_branch_from) {
2133 my $pid = open my $pipe, '-|';
2134 defined $pid or croak $!;
2135 if ($pid == 0) {
2136 exec(qw(git-rev-list --topo-order --pretty=raw), $br)
2137 or croak $!;
2138 }
2139 while (<$pipe>) {
2140 if (/^commit ($sha1)$/o) {
2141 my $commit = $1;
2142
2143 # if we've seen a commit,
2144 # we've seen its parents
2145 last if $seen{$commit};
2146 my ($tree) = (<$pipe> =~ /^tree ($sha1)$/o);
2147 unless (defined $tree) {
2148 die "Failed to parse commit $commit\n";
2149 }
2150 push @{$tree_map{$tree}}, $commit;
2151 $seen{$commit} = 1;
2152 }
2153 }
2154 close $pipe; # we could be breaking the pipe early
2155 }
2156 }
2157
2158 sub load_all_refs {
2159 if (@_branch_from) {
2160 print STDERR '--branch|-b parameters are ignored when ',
2161 "--branch-all-refs|-B is passed\n";
2162 }
2163
2164 # don't worry about rev-list on non-commit objects/tags,
2165 # it shouldn't blow up if a ref is a blob or tree...
2166 chomp(@_branch_from = `git-rev-parse --symbolic --all`);
2167 }
2168
2169 # '<svn username> = real-name <email address>' mapping based on git-svnimport:
2170 sub load_authors {
2171 open my $authors, '<', $_authors or die "Can't open $_authors $!\n";
2172 while (<$authors>) {
2173 chomp;
2174 next unless /^(\S+?|\(no author\))\s*=\s*(.+?)\s*<(.+)>\s*$/;
2175 my ($user, $name, $email) = ($1, $2, $3);
2176 $users{$user} = [$name, $email];
2177 }
2178 close $authors or croak $!;
2179 }
2180
2181 sub rload_authors {
2182 open my $authors, '<', $_authors or die "Can't open $_authors $!\n";
2183 while (<$authors>) {
2184 chomp;
2185 next unless /^(\S+?)\s*=\s*(.+?)\s*<(.+)>\s*$/;
2186 my ($user, $name, $email) = ($1, $2, $3);
2187 $rusers{"$name <$email>"} = $user;
2188 }
2189 close $authors or croak $!;
2190 }
2191
2192 sub svn_propget_base {
2193 my ($p, $f) = @_;
2194 $f .= '@BASE' if $_svn_pg_peg_revs;
2195 return safe_qx(qw/svn propget/, $p, $f);
2196 }
2197
2198 sub git_svn_each {
2199 my $sub = shift;
2200 foreach (`git-rev-parse --symbolic --all`) {
2201 next unless s#^refs/remotes/##;
2202 chomp $_;
2203 next unless -f "$GIT_DIR/svn/$_/info/url";
2204 &$sub($_);
2205 }
2206 }
2207
2208 sub migrate_revdb {
2209 git_svn_each(sub {
2210 my $id = shift;
2211 defined(my $pid = fork) or croak $!;
2212 if (!$pid) {
2213 $GIT_SVN = $ENV{GIT_SVN_ID} = $id;
2214 init_vars();
2215 exit 0 if -r $REVDB;
2216 print "Upgrading svn => git mapping...\n";
2217 -d $GIT_SVN_DIR or mkpath([$GIT_SVN_DIR]);
2218 open my $fh, '>>',$REVDB or croak $!;
2219 close $fh;
2220 rebuild();
2221 print "Done upgrading. You may now delete the ",
2222 "deprecated $GIT_SVN_DIR/revs directory\n";
2223 exit 0;
2224 }
2225 waitpid $pid, 0;
2226 croak $? if $?;
2227 });
2228 }
2229
2230 sub migration_check {
2231 migrate_revdb() unless (-e $REVDB);
2232 return if (-d "$GIT_DIR/svn" || !-d $GIT_DIR);
2233 print "Upgrading repository...\n";
2234 unless (-d "$GIT_DIR/svn") {
2235 mkdir "$GIT_DIR/svn" or croak $!;
2236 }
2237 print "Data from a previous version of git-svn exists, but\n\t",
2238 "$GIT_SVN_DIR\n\t(required for this version ",
2239 "($VERSION) of git-svn) does not.\n";
2240
2241 foreach my $x (`git-rev-parse --symbolic --all`) {
2242 next unless $x =~ s#^refs/remotes/##;
2243 chomp $x;
2244 next unless -f "$GIT_DIR/$x/info/url";
2245 my $u = eval { file_to_s("$GIT_DIR/$x/info/url") };
2246 next unless $u;
2247 my $dn = dirname("$GIT_DIR/svn/$x");
2248 mkpath([$dn]) unless -d $dn;
2249 rename "$GIT_DIR/$x", "$GIT_DIR/svn/$x" or croak "$!: $x";
2250 }
2251 migrate_revdb() if (-d $GIT_SVN_DIR && !-w $REVDB);
2252 print "Done upgrading.\n";
2253 }
2254
2255 sub find_rev_before {
2256 my ($r, $id, $eq_ok) = @_;
2257 my $f = "$GIT_DIR/svn/$id/.rev_db";
2258 return (undef,undef) unless -r $f;
2259 --$r unless $eq_ok;
2260 while ($r > 0) {
2261 if (my $c = revdb_get($f, $r)) {
2262 return ($r, $c);
2263 }
2264 --$r;
2265 }
2266 return (undef, undef);
2267 }
2268
2269 sub init_vars {
2270 $GIT_SVN ||= $ENV{GIT_SVN_ID} || 'git-svn';
2271 $GIT_SVN_DIR = "$GIT_DIR/svn/$GIT_SVN";
2272 $REVDB = "$GIT_SVN_DIR/.rev_db";
2273 $GIT_SVN_INDEX = "$GIT_SVN_DIR/index";
2274 $SVN_URL = undef;
2275 $SVN_WC = "$GIT_SVN_DIR/tree";
2276 %tree_map = ();
2277 }
2278
2279 # convert GetOpt::Long specs for use by git-repo-config
2280 sub read_repo_config {
2281 return unless -d $GIT_DIR;
2282 my $opts = shift;
2283 foreach my $o (keys %$opts) {
2284 my $v = $opts->{$o};
2285 my ($key) = ($o =~ /^([a-z\-]+)/);
2286 $key =~ s/-//g;
2287 my $arg = 'git-repo-config';
2288 $arg .= ' --int' if ($o =~ /[:=]i$/);
2289 $arg .= ' --bool' if ($o !~ /[:=][sfi]$/);
2290 if (ref $v eq 'ARRAY') {
2291 chomp(my @tmp = `$arg --get-all svn.$key`);
2292 @$v = @tmp if @tmp;
2293 } else {
2294 chomp(my $tmp = `$arg --get svn.$key`);
2295 if ($tmp && !($arg =~ / --bool / && $tmp eq 'false')) {
2296 $$v = $tmp;
2297 }
2298 }
2299 }
2300 }
2301
2302 sub set_default_vals {
2303 if (defined $_repack) {
2304 $_repack = 1000 if ($_repack <= 0);
2305 $_repack_nr = $_repack;
2306 $_repack_flags ||= '-d';
2307 }
2308 }
2309
2310 sub read_grafts {
2311 my $gr_file = shift;
2312 my ($grafts, $comments) = ({}, {});
2313 if (open my $fh, '<', $gr_file) {
2314 my @tmp;
2315 while (<$fh>) {
2316 if (/^($sha1)\s+/) {
2317 my $c = $1;
2318 if (@tmp) {
2319 @{$comments->{$c}} = @tmp;
2320 @tmp = ();
2321 }
2322 foreach my $p (split /\s+/, $_) {
2323 $grafts->{$c}->{$p} = 1;
2324 }
2325 } else {
2326 push @tmp, $_;
2327 }
2328 }
2329 close $fh or croak $!;
2330 @{$comments->{'END'}} = @tmp if @tmp;
2331 }
2332 return ($grafts, $comments);
2333 }
2334
2335 sub write_grafts {
2336 my ($grafts, $comments, $gr_file) = @_;
2337
2338 open my $fh, '>', $gr_file or croak $!;
2339 foreach my $c (sort keys %$grafts) {
2340 if ($comments->{$c}) {
2341 print $fh $_ foreach @{$comments->{$c}};
2342 }
2343 my $p = $grafts->{$c};
2344 my %x; # real parents
2345 delete $p->{$c}; # commits are not self-reproducing...
2346 my $pid = open my $ch, '-|';
2347 defined $pid or croak $!;
2348 if (!$pid) {
2349 exec(qw/git-cat-file commit/, $c) or croak $!;
2350 }
2351 while (<$ch>) {
2352 if (/^parent ($sha1)/) {
2353 $x{$1} = $p->{$1} = 1;
2354 } else {
2355 last unless /^\S/;
2356 }
2357 }
2358 close $ch; # breaking the pipe
2359
2360 # if real parents are the only ones in the grafts, drop it
2361 next if join(' ',sort keys %$p) eq join(' ',sort keys %x);
2362
2363 my (@ip, @jp, $mb);
2364 my %del = %x;
2365 @ip = @jp = keys %$p;
2366 foreach my $i (@ip) {
2367 next if $del{$i} || $p->{$i} == 2;
2368 foreach my $j (@jp) {
2369 next if $i eq $j || $del{$j} || $p->{$j} == 2;
2370 $mb = eval { safe_qx('git-merge-base',$i,$j) };
2371 next unless $mb;
2372 chomp $mb;
2373 next if $x{$mb};
2374 if ($mb eq $j) {
2375 delete $p->{$i};
2376 $del{$i} = 1;
2377 } elsif ($mb eq $i) {
2378 delete $p->{$j};
2379 $del{$j} = 1;
2380 }
2381 }
2382 }
2383
2384 # if real parents are the only ones in the grafts, drop it
2385 next if join(' ',sort keys %$p) eq join(' ',sort keys %x);
2386
2387 print $fh $c, ' ', join(' ', sort keys %$p),"\n";
2388 }
2389 if ($comments->{'END'}) {
2390 print $fh $_ foreach @{$comments->{'END'}};
2391 }
2392 close $fh or croak $!;
2393 }
2394
2395 sub read_url_paths_all {
2396 my ($l_map, $pfx, $p) = @_;
2397 my @dir;
2398 foreach (<$p/*>) {
2399 if (-r "$_/info/url") {
2400 $pfx .= '/' if $pfx && $pfx !~ m!/$!;
2401 my $id = $pfx . basename $_;
2402 my $url = file_to_s("$_/info/url");
2403 my ($u, $p) = repo_path_split($url);
2404 $l_map->{$u}->{$p} = $id;
2405 } elsif (-d $_) {
2406 push @dir, $_;
2407 }
2408 }
2409 foreach (@dir) {
2410 my $x = $_;
2411 $x =~ s!^\Q$GIT_DIR\E/svn/!!o;
2412 read_url_paths_all($l_map, $x, $_);
2413 }
2414 }
2415
2416 # this one only gets ids that have been imported, not new ones
2417 sub read_url_paths {
2418 my $l_map = {};
2419 git_svn_each(sub { my $x = shift;
2420 my $url = file_to_s("$GIT_DIR/svn/$x/info/url");
2421 my ($u, $p) = repo_path_split($url);
2422 $l_map->{$u}->{$p} = $x;
2423 });
2424 return $l_map;
2425 }
2426
2427 sub extract_metadata {
2428 my $id = shift or return (undef, undef, undef);
2429 my ($url, $rev, $uuid) = ($id =~ /^git-svn-id:\s(\S+?)\@(\d+)
2430 \s([a-f\d\-]+)$/x);
2431 if (!$rev || !$uuid || !$url) {
2432 # some of the original repositories I made had
2433 # identifiers like this:
2434 ($rev, $uuid) = ($id =~/^git-svn-id:\s(\d+)\@([a-f\d\-]+)/);
2435 }
2436 return ($url, $rev, $uuid);
2437 }
2438
2439 sub cmt_metadata {
2440 return extract_metadata((grep(/^git-svn-id: /,
2441 safe_qx(qw/git-cat-file commit/, shift)))[-1]);
2442 }
2443
2444 sub get_commit_time {
2445 my $cmt = shift;
2446 defined(my $pid = open my $fh, '-|') or croak $!;
2447 if (!$pid) {
2448 exec qw/git-rev-list --pretty=raw -n1/, $cmt or croak $!;
2449 }
2450 while (<$fh>) {
2451 /^committer\s(?:.+) (\d+) ([\-\+]?\d+)$/ or next;
2452 my ($s, $tz) = ($1, $2);
2453 if ($tz =~ s/^\+//) {
2454 $s += tz_to_s_offset($tz);
2455 } elsif ($tz =~ s/^\-//) {
2456 $s -= tz_to_s_offset($tz);
2457 }
2458 close $fh;
2459 return $s;
2460 }
2461 die "Can't get commit time for commit: $cmt\n";
2462 }
2463
2464 sub tz_to_s_offset {
2465 my ($tz) = @_;
2466 $tz =~ s/(\d\d)$//;
2467 return ($1 * 60) + ($tz * 3600);
2468 }
2469
2470 sub setup_pager { # translated to Perl from pager.c
2471 return unless (-t *STDOUT);
2472 my $pager = $ENV{PAGER};
2473 if (!defined $pager) {
2474 $pager = 'less';
2475 } elsif (length $pager == 0 || $pager eq 'cat') {
2476 return;
2477 }
2478 pipe my $rfd, my $wfd or return;
2479 defined(my $pid = fork) or croak $!;
2480 if (!$pid) {
2481 open STDOUT, '>&', $wfd or croak $!;
2482 return;
2483 }
2484 open STDIN, '<&', $rfd or croak $!;
2485 $ENV{LESS} ||= '-S';
2486 exec $pager or croak "Can't run pager: $!\n";;
2487 }
2488
2489 sub get_author_info {
2490 my ($dest, $author, $t, $tz) = @_;
2491 $author =~ s/(?:^\s*|\s*$)//g;
2492 $dest->{a_raw} = $author;
2493 my $_a;
2494 if ($_authors) {
2495 $_a = $rusers{$author} || undef;
2496 }
2497 if (!$_a) {
2498 ($_a) = ($author =~ /<([^>]+)\@[^>]+>$/);
2499 }
2500 $dest->{t} = $t;
2501 $dest->{tz} = $tz;
2502 $dest->{a} = $_a;
2503 # Date::Parse isn't in the standard Perl distro :(
2504 if ($tz =~ s/^\+//) {
2505 $t += tz_to_s_offset($tz);
2506 } elsif ($tz =~ s/^\-//) {
2507 $t -= tz_to_s_offset($tz);
2508 }
2509 $dest->{t_utc} = $t;
2510 }
2511
2512 sub process_commit {
2513 my ($c, $r_min, $r_max, $defer) = @_;
2514 if (defined $r_min && defined $r_max) {
2515 if ($r_min == $c->{r} && $r_min == $r_max) {
2516 show_commit($c);
2517 return 0;
2518 }
2519 return 1 if $r_min == $r_max;
2520 if ($r_min < $r_max) {
2521 # we need to reverse the print order
2522 return 0 if (defined $_limit && --$_limit < 0);
2523 push @$defer, $c;
2524 return 1;
2525 }
2526 if ($r_min != $r_max) {
2527 return 1 if ($r_min < $c->{r});
2528 return 1 if ($r_max > $c->{r});
2529 }
2530 }
2531 return 0 if (defined $_limit && --$_limit < 0);
2532 show_commit($c);
2533 return 1;
2534 }
2535
2536 sub show_commit {
2537 my $c = shift;
2538 if ($_oneline) {
2539 my $x = "\n";
2540 if (my $l = $c->{l}) {
2541 while ($l->[0] =~ /^\s*$/) { shift @$l }
2542 $x = $l->[0];
2543 }
2544 $_l_fmt ||= 'A' . length($c->{r});
2545 print 'r',pack($_l_fmt, $c->{r}),' | ';
2546 print "$c->{c} | " if $_show_commit;
2547 print $x;
2548 } else {
2549 show_commit_normal($c);
2550 }
2551 }
2552
2553 sub show_commit_normal {
2554 my ($c) = @_;
2555 print '-' x72, "\nr$c->{r} | ";
2556 print "$c->{c} | " if $_show_commit;
2557 print "$c->{a} | ", strftime("%Y-%m-%d %H:%M:%S %z (%a, %d %b %Y)",
2558 localtime($c->{t_utc})), ' | ';
2559 my $nr_line = 0;
2560
2561 if (my $l = $c->{l}) {
2562 while ($l->[$#$l] eq "\n" && $l->[($#$l - 1)] eq "\n") {
2563 pop @$l;
2564 }
2565 $nr_line = scalar @$l;
2566 if (!$nr_line) {
2567 print "1 line\n\n\n";
2568 } else {
2569 if ($nr_line == 1) {
2570 $nr_line = '1 line';
2571 } else {
2572 $nr_line .= ' lines';
2573 }
2574 print $nr_line, "\n\n";
2575 print $_ foreach @$l;
2576 }
2577 } else {
2578 print "1 line\n\n";
2579
2580 }
2581 foreach my $x (qw/raw diff/) {
2582 if ($c->{$x}) {
2583 print "\n";
2584 print $_ foreach @{$c->{$x}}
2585 }
2586 }
2587 }
2588
2589 sub libsvn_load {
2590 return unless $_use_lib;
2591 $_use_lib = eval {
2592 require SVN::Core;
2593 if ($SVN::Core::VERSION lt '1.1.0') {
2594 die "Need SVN::Core 1.1.0 or better ",
2595 "(got $SVN::Core::VERSION) ",
2596 "Falling back to command-line svn\n";
2597 }
2598 require SVN::Ra;
2599 require SVN::Delta;
2600 push @SVN::Git::Editor::ISA, 'SVN::Delta::Editor';
2601 my $kill_stupid_warnings = $SVN::Node::none.$SVN::Node::file.
2602 $SVN::Node::dir.$SVN::Node::unknown.
2603 $SVN::Node::none.$SVN::Node::file.
2604 $SVN::Node::dir.$SVN::Node::unknown;
2605 1;
2606 };
2607 }
2608
2609 sub libsvn_connect {
2610 my ($url) = @_;
2611 my $auth = SVN::Core::auth_open([SVN::Client::get_simple_provider(),
2612 SVN::Client::get_ssl_server_trust_file_provider(),
2613 SVN::Client::get_username_provider()]);
2614 my $s = eval { SVN::Ra->new(url => $url, auth => $auth) };
2615 return $s;
2616 }
2617
2618 sub libsvn_get_file {
2619 my ($gui, $f, $rev) = @_;
2620 my $p = $f;
2621 if (length $SVN_PATH > 0) {
2622 return unless ($p =~ s#^\Q$SVN_PATH\E/##);
2623 }
2624
2625 my ($hash, $pid, $in, $out);
2626 my $pool = SVN::Pool->new;
2627 defined($pid = open3($in, $out, '>&STDERR',
2628 qw/git-hash-object -w --stdin/)) or croak $!;
2629 # redirect STDOUT for SVN 1.1.x compatibility
2630 open my $stdout, '>&', \*STDOUT or croak $!;
2631 open STDOUT, '>&', $in or croak $!;
2632 my ($r, $props) = $SVN->get_file($f, $rev, \*STDOUT, $pool);
2633 $in->flush == 0 or croak $!;
2634 open STDOUT, '>&', $stdout or croak $!;
2635 close $in or croak $!;
2636 close $stdout or croak $!;
2637 $pool->clear;
2638 chomp($hash = do { local $/; <$out> });
2639 close $out or croak $!;
2640 waitpid $pid, 0;
2641 $hash =~ /^$sha1$/o or die "not a sha1: $hash\n";
2642
2643 my $mode = exists $props->{'svn:executable'} ? '100755' : '100644';
2644 if (exists $props->{'svn:special'}) {
2645 $mode = '120000';
2646 my $link = `git-cat-file blob $hash`;
2647 $link =~ s/^link // or die "svn:special file with contents: <",
2648 $link, "> is not understood\n";
2649 defined($pid = open3($in, $out, '>&STDERR',
2650 qw/git-hash-object -w --stdin/)) or croak $!;
2651 print $in $link;
2652 $in->flush == 0 or croak $!;
2653 close $in or croak $!;
2654 chomp($hash = do { local $/; <$out> });
2655 close $out or croak $!;
2656 waitpid $pid, 0;
2657 $hash =~ /^$sha1$/o or die "not a sha1: $hash\n";
2658 }
2659 print $gui $mode,' ',$hash,"\t",$p,"\0" or croak $!;
2660 }
2661
2662 sub libsvn_log_entry {
2663 my ($rev, $author, $date, $msg, $parents) = @_;
2664 my ($Y,$m,$d,$H,$M,$S) = ($date =~ /^(\d{4})\-(\d\d)\-(\d\d)T
2665 (\d\d)\:(\d\d)\:(\d\d).\d+Z$/x)
2666 or die "Unable to parse date: $date\n";
2667 if (defined $_authors && ! defined $users{$author}) {
2668 die "Author: $author not defined in $_authors file\n";
2669 }
2670 $msg = '' if ($rev == 0 && !defined $msg);
2671 return { revision => $rev, date => "+0000 $Y-$m-$d $H:$M:$S",
2672 author => $author, msg => $msg."\n", parents => $parents || [] }
2673 }
2674
2675 sub process_rm {
2676 my ($gui, $last_commit, $f) = @_;
2677 $f =~ s#^\Q$SVN_PATH\E/?## or return;
2678 # remove entire directories.
2679 if (safe_qx('git-ls-tree',$last_commit,'--',$f) =~ /^040000 tree/) {
2680 defined(my $pid = open my $ls, '-|') or croak $!;
2681 if (!$pid) {
2682 exec(qw/git-ls-tree -r --name-only -z/,
2683 $last_commit,'--',$f) or croak $!;
2684 }
2685 local $/ = "\0";
2686 while (<$ls>) {
2687 print $gui '0 ',0 x 40,"\t",$_ or croak $!;
2688 }
2689 close $ls or croak $?;
2690 } else {
2691 print $gui '0 ',0 x 40,"\t",$f,"\0" or croak $!;
2692 }
2693 }
2694
2695 sub libsvn_fetch {
2696 my ($last_commit, $paths, $rev, $author, $date, $msg) = @_;
2697 open my $gui, '| git-update-index -z --index-info' or croak $!;
2698 my @amr;
2699 foreach my $f (keys %$paths) {
2700 my $m = $paths->{$f}->action();
2701 $f =~ s#^/+##;
2702 if ($m =~ /^[DR]$/) {
2703 print "\t$m\t$f\n" unless $_q;
2704 process_rm($gui, $last_commit, $f);
2705 next if $m eq 'D';
2706 # 'R' can be file replacements, too, right?
2707 }
2708 my $pool = SVN::Pool->new;
2709 my $t = $SVN->check_path($f, $rev, $pool);
2710 if ($t == $SVN::Node::file) {
2711 if ($m =~ /^[AMR]$/) {
2712 push @amr, [ $m, $f ];
2713 } else {
2714 die "Unrecognized action: $m, ($f r$rev)\n";
2715 }
2716 } elsif ($t == $SVN::Node::dir && $m =~ /^[AR]$/) {
2717 my @traversed = ();
2718 libsvn_traverse($gui, '', $f, $rev, \@traversed);
2719 foreach (@traversed) {
2720 push @amr, [ $m, $_ ]
2721 }
2722 }
2723 $pool->clear;
2724 }
2725 foreach (@amr) {
2726 print "\t$_->[0]\t$_->[1]\n" unless $_q;
2727 libsvn_get_file($gui, $_->[1], $rev)
2728 }
2729 close $gui or croak $?;
2730 return libsvn_log_entry($rev, $author, $date, $msg, [$last_commit]);
2731 }
2732
2733 sub svn_grab_base_rev {
2734 defined(my $pid = open my $fh, '-|') or croak $!;
2735 if (!$pid) {
2736 open my $null, '>', '/dev/null' or croak $!;
2737 open STDERR, '>&', $null or croak $!;
2738 exec qw/git-rev-parse --verify/,"refs/remotes/$GIT_SVN^0"
2739 or croak $!;
2740 }
2741 chomp(my $c = do { local $/; <$fh> });
2742 close $fh;
2743 if (defined $c && length $c) {
2744 my ($url, $rev, $uuid) = cmt_metadata($c);
2745 return ($rev, $c) if defined $rev;
2746 }
2747 if ($_no_metadata) {
2748 my $offset = -41; # from tail
2749 my $rl;
2750 open my $fh, '<', $REVDB or
2751 die "--no-metadata specified and $REVDB not readable\n";
2752 seek $fh, $offset, 2;
2753 $rl = readline $fh;
2754 defined $rl or return (undef, undef);
2755 chomp $rl;
2756 while ($c ne $rl && tell $fh != 0) {
2757 $offset -= 41;
2758 seek $fh, $offset, 2;
2759 $rl = readline $fh;
2760 defined $rl or return (undef, undef);
2761 chomp $rl;
2762 }
2763 my $rev = tell $fh;
2764 croak $! if ($rev < -1);
2765 $rev = ($rev - 41) / 41;
2766 close $fh or croak $!;
2767 return ($rev, $c);
2768 }
2769 return (undef, undef);
2770 }
2771
2772 sub libsvn_parse_revision {
2773 my $base = shift;
2774 my $head = $SVN->get_latest_revnum();
2775 if (!defined $_revision || $_revision eq 'BASE:HEAD') {
2776 return ($base + 1, $head) if (defined $base);
2777 return (0, $head);
2778 }
2779 return ($1, $2) if ($_revision =~ /^(\d+):(\d+)$/);
2780 return ($_revision, $_revision) if ($_revision =~ /^\d+$/);
2781 if ($_revision =~ /^BASE:(\d+)$/) {
2782 return ($base + 1, $1) if (defined $base);
2783 return (0, $head);
2784 }
2785 return ($1, $head) if ($_revision =~ /^(\d+):HEAD$/);
2786 die "revision argument: $_revision not understood by git-svn\n",
2787 "Try using the command-line svn client instead\n";
2788 }
2789
2790 sub libsvn_traverse {
2791 my ($gui, $pfx, $path, $rev, $files) = @_;
2792 my $cwd = "$pfx/$path";
2793 my $pool = SVN::Pool->new;
2794 $cwd =~ s#^/+##g;
2795 my ($dirent, $r, $props) = $SVN->get_dir($cwd, $rev, $pool);
2796 foreach my $d (keys %$dirent) {
2797 my $t = $dirent->{$d}->kind;
2798 if ($t == $SVN::Node::dir) {
2799 libsvn_traverse($gui, $cwd, $d, $rev, $files);
2800 } elsif ($t == $SVN::Node::file) {
2801 my $file = "$cwd/$d";
2802 if (defined $files) {
2803 push @$files, $file;
2804 } else {
2805 print "\tA\t$file\n" unless $_q;
2806 libsvn_get_file($gui, $file, $rev);
2807 }
2808 }
2809 }
2810 $pool->clear;
2811 }
2812
2813 sub libsvn_traverse_ignore {
2814 my ($fh, $path, $r) = @_;
2815 $path =~ s#^/+##g;
2816 my $pool = SVN::Pool->new;
2817 my ($dirent, undef, $props) = $SVN->get_dir($path, $r, $pool);
2818 my $p = $path;
2819 $p =~ s#^\Q$SVN_PATH\E/?##;
2820 print $fh length $p ? "\n# $p\n" : "\n# /\n";
2821 if (my $s = $props->{'svn:ignore'}) {
2822 $s =~ s/[\r\n]+/\n/g;
2823 chomp $s;
2824 if (length $p == 0) {
2825 $s =~ s#\n#\n/$p#g;
2826 print $fh "/$s\n";
2827 } else {
2828 $s =~ s#\n#\n/$p/#g;
2829 print $fh "/$p/$s\n";
2830 }
2831 }
2832 foreach (sort keys %$dirent) {
2833 next if $dirent->{$_}->kind != $SVN::Node::dir;
2834 libsvn_traverse_ignore($fh, "$path/$_", $r);
2835 }
2836 $pool->clear;
2837 }
2838
2839 sub revisions_eq {
2840 my ($path, $r0, $r1) = @_;
2841 return 1 if $r0 == $r1;
2842 my $nr = 0;
2843 if ($_use_lib) {
2844 # should be OK to use Pool here (r1 - r0) should be small
2845 my $pool = SVN::Pool->new;
2846 libsvn_get_log($SVN, "/$path", $r0, $r1,
2847 0, 1, 1, sub {$nr++}, $pool);
2848 $pool->clear;
2849 } else {
2850 my ($url, undef) = repo_path_split($SVN_URL);
2851 my $svn_log = svn_log_raw("$url/$path","-r$r0:$r1");
2852 while (next_log_entry($svn_log)) { $nr++ }
2853 close $svn_log->{fh};
2854 }
2855 return 0 if ($nr > 1);
2856 return 1;
2857 }
2858
2859 sub libsvn_find_parent_branch {
2860 my ($paths, $rev, $author, $date, $msg) = @_;
2861 my $svn_path = '/'.$SVN_PATH;
2862
2863 # look for a parent from another branch:
2864 my $i = $paths->{$svn_path} or return;
2865 my $branch_from = $i->copyfrom_path or return;
2866 my $r = $i->copyfrom_rev;
2867 print STDERR "Found possible branch point: ",
2868 "$branch_from => $svn_path, $r\n";
2869 $branch_from =~ s#^/##;
2870 my $l_map = {};
2871 read_url_paths_all($l_map, '', "$GIT_DIR/svn");
2872 my $url = $SVN->{url};
2873 defined $l_map->{$url} or return;
2874 my $id = $l_map->{$url}->{$branch_from};
2875 if (!defined $id && $_follow_parent) {
2876 print STDERR "Following parent: $branch_from\@$r\n";
2877 # auto create a new branch and follow it
2878 $id = basename($branch_from);
2879 $id .= '@'.$r if -r "$GIT_DIR/svn/$id";
2880 while (-r "$GIT_DIR/svn/$id") {
2881 # just grow a tail if we're not unique enough :x
2882 $id .= '-';
2883 }
2884 }
2885 return unless defined $id;
2886
2887 my ($r0, $parent) = find_rev_before($r,$id,1);
2888 if ($_follow_parent && (!defined $r0 || !defined $parent)) {
2889 defined(my $pid = fork) or croak $!;
2890 if (!$pid) {
2891 $GIT_SVN = $ENV{GIT_SVN_ID} = $id;
2892 init_vars();
2893 $SVN_URL = "$url/$branch_from";
2894 $SVN_LOG = $SVN = undef;
2895 setup_git_svn();
2896 # we can't assume SVN_URL exists at r+1:
2897 $_revision = "0:$r";
2898 fetch_lib();
2899 exit 0;
2900 }
2901 waitpid $pid, 0;
2902 croak $? if $?;
2903 ($r0, $parent) = find_rev_before($r,$id,1);
2904 }
2905 return unless (defined $r0 && defined $parent);
2906 if (revisions_eq($branch_from, $r0, $r)) {
2907 unlink $GIT_SVN_INDEX;
2908 print STDERR "Found branch parent: ($GIT_SVN) $parent\n";
2909 sys(qw/git-read-tree/, $parent);
2910 return libsvn_fetch($parent, $paths, $rev,
2911 $author, $date, $msg);
2912 }
2913 print STDERR "Nope, branch point not imported or unknown\n";
2914 return undef;
2915 }
2916
2917 sub libsvn_get_log {
2918 my ($ra, @args) = @_;
2919 if ($SVN::Core::VERSION le '1.2.0') {
2920 splice(@args, 3, 1);
2921 }
2922 $ra->get_log(@args);
2923 }
2924
2925 sub libsvn_new_tree {
2926 if (my $log_entry = libsvn_find_parent_branch(@_)) {
2927 return $log_entry;
2928 }
2929 my ($paths, $rev, $author, $date, $msg) = @_;
2930 open my $gui, '| git-update-index -z --index-info' or croak $!;
2931 libsvn_traverse($gui, '', $SVN_PATH, $rev);
2932 close $gui or croak $?;
2933 return libsvn_log_entry($rev, $author, $date, $msg);
2934 }
2935
2936 sub find_graft_path_commit {
2937 my ($tree_paths, $p1, $r1) = @_;
2938 foreach my $x (keys %$tree_paths) {
2939 next unless ($p1 =~ /^\Q$x\E/);
2940 my $i = $tree_paths->{$x};
2941 my ($r0, $parent) = find_rev_before($r1,$i,1);
2942 return $parent if (defined $r0 && $r0 == $r1);
2943 print STDERR "r$r1 of $i not imported\n";
2944 next;
2945 }
2946 return undef;
2947 }
2948
2949 sub find_graft_path_parents {
2950 my ($grafts, $tree_paths, $c, $p0, $r0) = @_;
2951 foreach my $x (keys %$tree_paths) {
2952 next unless ($p0 =~ /^\Q$x\E/);
2953 my $i = $tree_paths->{$x};
2954 my ($r, $parent) = find_rev_before($r0, $i, 1);
2955 if (defined $r && defined $parent && revisions_eq($x,$r,$r0)) {
2956 my ($url_b, undef, $uuid_b) = cmt_metadata($c);
2957 my ($url_a, undef, $uuid_a) = cmt_metadata($parent);
2958 next if ($url_a && $url_b && $url_a eq $url_b &&
2959 $uuid_b eq $uuid_a);
2960 $grafts->{$c}->{$parent} = 1;
2961 }
2962 }
2963 }
2964
2965 sub libsvn_graft_file_copies {
2966 my ($grafts, $tree_paths, $path, $paths, $rev) = @_;
2967 foreach (keys %$paths) {
2968 my $i = $paths->{$_};
2969 my ($m, $p0, $r0) = ($i->action, $i->copyfrom_path,
2970 $i->copyfrom_rev);
2971 next unless (defined $p0 && defined $r0);
2972
2973 my $p1 = $_;
2974 $p1 =~ s#^/##;
2975 $p0 =~ s#^/##;
2976 my $c = find_graft_path_commit($tree_paths, $p1, $rev);
2977 next unless $c;
2978 find_graft_path_parents($grafts, $tree_paths, $c, $p0, $r0);
2979 }
2980 }
2981
2982 sub set_index {
2983 my $old = $ENV{GIT_INDEX_FILE};
2984 $ENV{GIT_INDEX_FILE} = shift;
2985 return $old;
2986 }
2987
2988 sub restore_index {
2989 my ($old) = @_;
2990 if (defined $old) {
2991 $ENV{GIT_INDEX_FILE} = $old;
2992 } else {
2993 delete $ENV{GIT_INDEX_FILE};
2994 }
2995 }
2996
2997 sub libsvn_commit_cb {
2998 my ($rev, $date, $committer, $c, $msg, $r_last, $cmt_last) = @_;
2999 if ($_optimize_commits && $rev == ($r_last + 1)) {
3000 my $log = libsvn_log_entry($rev,$committer,$date,$msg);
3001 $log->{tree} = get_tree_from_treeish($c);
3002 my $cmt = git_commit($log, $cmt_last, $c);
3003 my @diff = safe_qx('git-diff-tree', $cmt, $c);
3004 if (@diff) {
3005 print STDERR "Trees differ: $cmt $c\n",
3006 join('',@diff),"\n";
3007 exit 1;
3008 }
3009 } else {
3010 fetch("$rev=$c");
3011 }
3012 }
3013
3014 sub libsvn_ls_fullurl {
3015 my $fullurl = shift;
3016 my ($repo, $path) = repo_path_split($fullurl);
3017 $SVN ||= libsvn_connect($repo);
3018 my @ret;
3019 my $pool = SVN::Pool->new;
3020 my ($dirent, undef, undef) = $SVN->get_dir($path,
3021 $SVN->get_latest_revnum, $pool);
3022 foreach my $d (keys %$dirent) {
3023 if ($dirent->{$d}->kind == $SVN::Node::dir) {
3024 push @ret, "$d/"; # add '/' for compat with cli svn
3025 }
3026 }
3027 $pool->clear;
3028 return @ret;
3029 }
3030
3031
3032 sub libsvn_skip_unknown_revs {
3033 my $err = shift;
3034 my $errno = $err->apr_err();
3035 # Maybe the branch we're tracking didn't
3036 # exist when the repo started, so it's
3037 # not an error if it doesn't, just continue
3038 #
3039 # Wonderfully consistent library, eh?
3040 # 160013 - svn:// and file://
3041 # 175002 - http(s)://
3042 # More codes may be discovered later...
3043 if ($errno == 175002 || $errno == 160013) {
3044 return;
3045 }
3046 croak "Error from SVN, ($errno): ", $err->expanded_message,"\n";
3047 };
3048
3049 # Tie::File seems to be prone to offset errors if revisions get sparse,
3050 # it's not that fast, either. Tie::File is also not in Perl 5.6. So
3051 # one of my favorite modules is out :< Next up would be one of the DBM
3052 # modules, but I'm not sure which is most portable... So I'll just
3053 # go with something that's plain-text, but still capable of
3054 # being randomly accessed. So here's my ultra-simple fixed-width
3055 # database. All records are 40 characters + "\n", so it's easy to seek
3056 # to a revision: (41 * rev) is the byte offset.
3057 # A record of 40 0s denotes an empty revision.
3058 # And yes, it's still pretty fast (faster than Tie::File).
3059 sub revdb_set {
3060 my ($file, $rev, $commit) = @_;
3061 length $commit == 40 or croak "arg3 must be a full SHA1 hexsum\n";
3062 open my $fh, '+<', $file or croak $!;
3063 my $offset = $rev * 41;
3064 # assume that append is the common case:
3065 seek $fh, 0, 2 or croak $!;
3066 my $pos = tell $fh;
3067 if ($pos < $offset) {
3068 print $fh (('0' x 40),"\n") x (($offset - $pos) / 41);
3069 }
3070 seek $fh, $offset, 0 or croak $!;
3071 print $fh $commit,"\n";
3072 close $fh or croak $!;
3073 }
3074
3075 sub revdb_get {
3076 my ($file, $rev) = @_;
3077 my $ret;
3078 my $offset = $rev * 41;
3079 open my $fh, '<', $file or croak $!;
3080 seek $fh, $offset, 0;
3081 if (tell $fh == $offset) {
3082 $ret = readline $fh;
3083 if (defined $ret) {
3084 chomp $ret;
3085 $ret = undef if ($ret =~ /^0{40}$/);
3086 }
3087 }
3088 close $fh or croak $!;
3089 return $ret;
3090 }
3091
3092 sub copy_remote_ref {
3093 my $origin = $_cp_remote ? $_cp_remote : 'origin';
3094 my $ref = "refs/remotes/$GIT_SVN";
3095 if (safe_qx('git-ls-remote', $origin, $ref)) {
3096 sys(qw/git fetch/, $origin, "$ref:$ref");
3097 } else {
3098 die "Unable to find remote reference: ",
3099 "refs/remotes/$GIT_SVN on $origin\n";
3100 }
3101 }
3102
3103 package SVN::Git::Editor;
3104 use vars qw/@ISA/;
3105 use strict;
3106 use warnings;
3107 use Carp qw/croak/;
3108 use IO::File;
3109
3110 sub new {
3111 my $class = shift;
3112 my $git_svn = shift;
3113 my $self = SVN::Delta::Editor->new(@_);
3114 bless $self, $class;
3115 foreach (qw/svn_path c r ra /) {
3116 die "$_ required!\n" unless (defined $git_svn->{$_});
3117 $self->{$_} = $git_svn->{$_};
3118 }
3119 $self->{pool} = SVN::Pool->new;
3120 $self->{bat} = { '' => $self->open_root($self->{r}, $self->{pool}) };
3121 $self->{rm} = { };
3122 require Digest::MD5;
3123 return $self;
3124 }
3125
3126 sub split_path {
3127 return ($_[0] =~ m#^(.*?)/?([^/]+)$#);
3128 }
3129
3130 sub repo_path {
3131 (defined $_[1] && length $_[1]) ? "$_[0]->{svn_path}/$_[1]"
3132 : $_[0]->{svn_path}
3133 }
3134
3135 sub url_path {
3136 my ($self, $path) = @_;
3137 $self->{ra}->{url} . '/' . $self->repo_path($path);
3138 }
3139
3140 sub rmdirs {
3141 my ($self, $q) = @_;
3142 my $rm = $self->{rm};
3143 delete $rm->{''}; # we never delete the url we're tracking
3144 return unless %$rm;
3145
3146 foreach (keys %$rm) {
3147 my @d = split m#/#, $_;
3148 my $c = shift @d;
3149 $rm->{$c} = 1;
3150 while (@d) {
3151 $c .= '/' . shift @d;
3152 $rm->{$c} = 1;
3153 }
3154 }
3155 delete $rm->{$self->{svn_path}};
3156 delete $rm->{''}; # we never delete the url we're tracking
3157 return unless %$rm;
3158
3159 defined(my $pid = open my $fh,'-|') or croak $!;
3160 if (!$pid) {
3161 exec qw/git-ls-tree --name-only -r -z/, $self->{c} or croak $!;
3162 }
3163 local $/ = "\0";
3164 my @svn_path = split m#/#, $self->{svn_path};
3165 while (<$fh>) {
3166 chomp;
3167 my @dn = (@svn_path, (split m#/#, $_));
3168 while (pop @dn) {
3169 delete $rm->{join '/', @dn};
3170 }
3171 unless (%$rm) {
3172 close $fh;
3173 return;
3174 }
3175 }
3176 close $fh;
3177
3178 my ($r, $p, $bat) = ($self->{r}, $self->{pool}, $self->{bat});
3179 foreach my $d (sort { $b =~ tr#/#/# <=> $a =~ tr#/#/# } keys %$rm) {
3180 $self->close_directory($bat->{$d}, $p);
3181 my ($dn) = ($d =~ m#^(.*?)/?(?:[^/]+)$#);
3182 print "\tD+\t/$d/\n" unless $q;
3183 $self->SUPER::delete_entry($d, $r, $bat->{$dn}, $p);
3184 delete $bat->{$d};
3185 }
3186 }
3187
3188 sub open_or_add_dir {
3189 my ($self, $full_path, $baton) = @_;
3190 my $p = SVN::Pool->new;
3191 my $t = $self->{ra}->check_path($full_path, $self->{r}, $p);
3192 $p->clear;
3193 if ($t == $SVN::Node::none) {
3194 return $self->add_directory($full_path, $baton,
3195 undef, -1, $self->{pool});
3196 } elsif ($t == $SVN::Node::dir) {
3197 return $self->open_directory($full_path, $baton,
3198 $self->{r}, $self->{pool});
3199 }
3200 print STDERR "$full_path already exists in repository at ",
3201 "r$self->{r} and it is not a directory (",
3202 ($t == $SVN::Node::file ? 'file' : 'unknown'),"/$t)\n";
3203 exit 1;
3204 }
3205
3206 sub ensure_path {
3207 my ($self, $path) = @_;
3208 my $bat = $self->{bat};
3209 $path = $self->repo_path($path);
3210 return $bat->{''} unless (length $path);
3211 my @p = split m#/+#, $path;
3212 my $c = shift @p;
3213 $bat->{$c} ||= $self->open_or_add_dir($c, $bat->{''});
3214 while (@p) {
3215 my $c0 = $c;
3216 $c .= '/' . shift @p;
3217 $bat->{$c} ||= $self->open_or_add_dir($c, $bat->{$c0});
3218 }
3219 return $bat->{$c};
3220 }
3221
3222 sub A {
3223 my ($self, $m, $q) = @_;
3224 my ($dir, $file) = split_path($m->{file_b});
3225 my $pbat = $self->ensure_path($dir);
3226 my $fbat = $self->add_file($self->repo_path($m->{file_b}), $pbat,
3227 undef, -1);
3228 print "\tA\t$m->{file_b}\n" unless $q;
3229 $self->chg_file($fbat, $m);
3230 $self->close_file($fbat,undef,$self->{pool});
3231 }
3232
3233 sub C {
3234 my ($self, $m, $q) = @_;
3235 my ($dir, $file) = split_path($m->{file_b});
3236 my $pbat = $self->ensure_path($dir);
3237 my $fbat = $self->add_file($self->repo_path($m->{file_b}), $pbat,
3238 $self->url_path($m->{file_a}), $self->{r});
3239 print "\tC\t$m->{file_a} => $m->{file_b}\n" unless $q;
3240 $self->chg_file($fbat, $m);
3241 $self->close_file($fbat,undef,$self->{pool});
3242 }
3243
3244 sub delete_entry {
3245 my ($self, $path, $pbat) = @_;
3246 my $rpath = $self->repo_path($path);
3247 my ($dir, $file) = split_path($rpath);
3248 $self->{rm}->{$dir} = 1;
3249 $self->SUPER::delete_entry($rpath, $self->{r}, $pbat, $self->{pool});
3250 }
3251
3252 sub R {
3253 my ($self, $m, $q) = @_;
3254 my ($dir, $file) = split_path($m->{file_b});
3255 my $pbat = $self->ensure_path($dir);
3256 my $fbat = $self->add_file($self->repo_path($m->{file_b}), $pbat,
3257 $self->url_path($m->{file_a}), $self->{r});
3258 print "\tR\t$m->{file_a} => $m->{file_b}\n" unless $q;
3259 $self->chg_file($fbat, $m);
3260 $self->close_file($fbat,undef,$self->{pool});
3261
3262 ($dir, $file) = split_path($m->{file_a});
3263 $pbat = $self->ensure_path($dir);
3264 $self->delete_entry($m->{file_a}, $pbat);
3265 }
3266
3267 sub M {
3268 my ($self, $m, $q) = @_;
3269 my ($dir, $file) = split_path($m->{file_b});
3270 my $pbat = $self->ensure_path($dir);
3271 my $fbat = $self->open_file($self->repo_path($m->{file_b}),
3272 $pbat,$self->{r},$self->{pool});
3273 print "\t$m->{chg}\t$m->{file_b}\n" unless $q;
3274 $self->chg_file($fbat, $m);
3275 $self->close_file($fbat,undef,$self->{pool});
3276 }
3277
3278 sub T { shift->M(@_) }
3279
3280 sub change_file_prop {
3281 my ($self, $fbat, $pname, $pval) = @_;
3282 $self->SUPER::change_file_prop($fbat, $pname, $pval, $self->{pool});
3283 }
3284
3285 sub chg_file {
3286 my ($self, $fbat, $m) = @_;
3287 if ($m->{mode_b} =~ /755$/ && $m->{mode_a} !~ /755$/) {
3288 $self->change_file_prop($fbat,'svn:executable','*');
3289 } elsif ($m->{mode_b} !~ /755$/ && $m->{mode_a} =~ /755$/) {
3290 $self->change_file_prop($fbat,'svn:executable',undef);
3291 }
3292 my $fh = IO::File->new_tmpfile or croak $!;
3293 if ($m->{mode_b} =~ /^120/) {
3294 print $fh 'link ' or croak $!;
3295 $self->change_file_prop($fbat,'svn:special','*');
3296 } elsif ($m->{mode_a} =~ /^120/ && $m->{mode_b} !~ /^120/) {
3297 $self->change_file_prop($fbat,'svn:special',undef);
3298 }
3299 defined(my $pid = fork) or croak $!;
3300 if (!$pid) {
3301 open STDOUT, '>&', $fh or croak $!;
3302 exec qw/git-cat-file blob/, $m->{sha1_b} or croak $!;
3303 }
3304 waitpid $pid, 0;
3305 croak $? if $?;
3306 $fh->flush == 0 or croak $!;
3307 seek $fh, 0, 0 or croak $!;
3308
3309 my $md5 = Digest::MD5->new;
3310 $md5->addfile($fh) or croak $!;
3311 seek $fh, 0, 0 or croak $!;
3312
3313 my $exp = $md5->hexdigest;
3314 my $atd = $self->apply_textdelta($fbat, undef, $self->{pool});
3315 my $got = SVN::TxDelta::send_stream($fh, @$atd, $self->{pool});
3316 die "Checksum mismatch\nexpected: $exp\ngot: $got\n" if ($got ne $exp);
3317
3318 close $fh or croak $!;
3319 }
3320
3321 sub D {
3322 my ($self, $m, $q) = @_;
3323 my ($dir, $file) = split_path($m->{file_b});
3324 my $pbat = $self->ensure_path($dir);
3325 print "\tD\t$m->{file_b}\n" unless $q;
3326 $self->delete_entry($m->{file_b}, $pbat);
3327 }
3328
3329 sub close_edit {
3330 my ($self) = @_;
3331 my ($p,$bat) = ($self->{pool}, $self->{bat});
3332 foreach (sort { $b =~ tr#/#/# <=> $a =~ tr#/#/# } keys %$bat) {
3333 $self->close_directory($bat->{$_}, $p);
3334 }
3335 $self->SUPER::close_edit($p);
3336 $p->clear;
3337 }
3338
3339 sub abort_edit {
3340 my ($self) = @_;
3341 $self->SUPER::abort_edit($self->{pool});
3342 $self->{pool}->clear;
3343 }
3344
3345 __END__
3346
3347 Data structures:
3348
3349 $svn_log hashref (as returned by svn_log_raw)
3350 {
3351 fh => file handle of the log file,
3352 state => state of the log file parser (sep/msg/rev/msg_start...)
3353 }
3354
3355 $log_msg hashref as returned by next_log_entry($svn_log)
3356 {
3357 msg => 'whitespace-formatted log entry
3358 ', # trailing newline is preserved
3359 revision => '8', # integer
3360 date => '2004-02-24T17:01:44.108345Z', # commit date
3361 author => 'committer name'
3362 };
3363
3364
3365 @mods = array of diff-index line hashes, each element represents one line
3366 of diff-index output
3367
3368 diff-index line ($m hash)
3369 {
3370 mode_a => first column of diff-index output, no leading ':',
3371 mode_b => second column of diff-index output,
3372 sha1_b => sha1sum of the final blob,
3373 chg => change type [MCRADT],
3374 file_a => original file name of a file (iff chg is 'C' or 'R')
3375 file_b => new/current file name of a file (any chg)
3376 }
3377 ;
3378
3379 # retval of read_url_paths{,_all}();
3380 $l_map = {
3381 # repository root url
3382 'https://svn.musicpd.org' => {
3383 # repository path # GIT_SVN_ID
3384 'mpd/trunk' => 'trunk',
3385 'mpd/tags/0.11.5' => 'tags/0.11.5',
3386 },
3387 }
3388
3389 Notes:
3390 I don't trust the each() function on unless I created %hash myself
3391 because the internal iterator may not have started at base.
MinGW port of GIT