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Remove the "delay writing to avoid runtime penalty of racy-git avoidance"
[git/mingw.git] / git-svn.perl
blob0d58bb9b37944728baa7d8af17d714f6ee8b4509
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, $_branch_all_refs, @_opt_m);
55 my (@_branch_from, %tree_map, %users, %rusers, %equiv);
56 my ($_svn_co_url_revs, $_svn_pg_peg_revs);
57 my @repo_path_split_cache;
58
59 my %fc_opts = ( 'no-ignore-externals' => \$_no_ignore_ext,
60 'branch|b=s' => \@_branch_from,
61 'follow-parent|follow' => \$_follow_parent,
62 'branch-all-refs|B' => \$_branch_all_refs,
63 'authors-file|A=s' => \$_authors,
64 'repack:i' => \$_repack,
65 'no-metadata' => \$_no_metadata,
66 'quiet|q' => \$_q,
67 'repack-flags|repack-args|repack-opts=s' => \$_repack_flags);
68
69 my ($_trunk, $_tags, $_branches);
70 my %multi_opts = ( 'trunk|T=s' => \$_trunk,
71 'tags|t=s' => \$_tags,
72 'branches|b=s' => \$_branches );
73 my %init_opts = ( 'template=s' => \$_template, 'shared' => \$_shared );
74 my %cmt_opts = ( 'edit|e' => \$_edit,
75 'rmdir' => \$_rmdir,
76 'find-copies-harder' => \$_find_copies_harder,
77 'l=i' => \$_l,
78 'copy-similarity|C=i'=> \$_cp_similarity
79 );
80
81 my %cmd = (
82 fetch => [ \&fetch, "Download new revisions from SVN",
83 { 'revision|r=s' => \$_revision, %fc_opts } ],
84 init => [ \&init, "Initialize a repo for tracking" .
85 " (requires URL argument)",
86 \%init_opts ],
87 commit => [ \&commit, "Commit git revisions to SVN",
88 { 'stdin|' => \$_stdin, %cmt_opts, %fc_opts, } ],
89 'show-ignore' => [ \&show_ignore, "Show svn:ignore listings",
90 { 'revision|r=i' => \$_revision } ],
91 rebuild => [ \&rebuild, "Rebuild git-svn metadata (after git clone)",
92 { 'no-ignore-externals' => \$_no_ignore_ext,
93 'copy-remote|remote=s' => \$_cp_remote,
94 'upgrade' => \$_upgrade } ],
95 'graft-branches' => [ \&graft_branches,
96 'Detect merges/branches from already imported history',
97 { 'merge-rx|m' => \@_opt_m,
98 'branch|b=s' => \@_branch_from,
99 'branch-all-refs|B' => \$_branch_all_refs,
100 'no-default-regex' => \$_no_default_regex,
101 'no-graft-copy' => \$_no_graft_copy } ],
102 'multi-init' => [ \&multi_init,
103 'Initialize multiple trees (like git-svnimport)',
104 { %multi_opts, %fc_opts } ],
105 'multi-fetch' => [ \&multi_fetch,
106 'Fetch multiple trees (like git-svnimport)',
107 \%fc_opts ],
108 'log' => [ \&show_log, 'Show commit logs',
109 { 'limit=i' => \$_limit,
110 'revision|r=s' => \$_revision,
111 'verbose|v' => \$_verbose,
112 'incremental' => \$_incremental,
113 'oneline' => \$_oneline,
114 'show-commit' => \$_show_commit,
115 'authors-file|A=s' => \$_authors,
116 } ],
117 'commit-diff' => [ \&commit_diff, 'Commit a diff between two trees',
118 { 'message|m=s' => \$_message,
119 'file|F=s' => \$_file,
120 %cmt_opts } ],
121 );
122
123 my $cmd;
124 for (my $i = 0; $i < @ARGV; $i++) {
125 if (defined $cmd{$ARGV[$i]}) {
126 $cmd = $ARGV[$i];
127 splice @ARGV, $i, 1;
128 last;
129 }
130 };
131
132 my %opts = %{$cmd{$cmd}->[2]} if (defined $cmd);
133
134 read_repo_config(\%opts);
135 my $rv = GetOptions(%opts, 'help|H|h' => \$_help,
136 'version|V' => \$_version,
137 'id|i=s' => \$GIT_SVN);
138 exit 1 if (!$rv && $cmd ne 'log');
139
140 set_default_vals();
141 usage(0) if $_help;
142 version() if $_version;
143 usage(1) unless defined $cmd;
144 init_vars();
145 load_authors() if $_authors;
146 load_all_refs() if $_branch_all_refs;
147 svn_compat_check() unless $_use_lib;
148 migration_check() unless $cmd =~ /^(?:init|rebuild|multi-init|commit-diff)$/;
149 $cmd{$cmd}->[0]->(@ARGV);
150 exit 0;
151
152 ####################### primary functions ######################
153 sub usage {
154 my $exit = shift || 0;
155 my $fd = $exit ? \*STDERR : \*STDOUT;
156 print $fd <<"";
157 git-svn - bidirectional operations between a single Subversion tree and git
158 Usage: $0 <command> [options] [arguments]\n
159
160 print $fd "Available commands:\n" unless $cmd;
161
162 foreach (sort keys %cmd) {
163 next if $cmd && $cmd ne $_;
164 print $fd ' ',pack('A13',$_),$cmd{$_}->[1],"\n";
165 foreach (keys %{$cmd{$_}->[2]}) {
166 # prints out arguments as they should be passed:
167 my $x = s#[:=]s$## ? '<arg>' : s#[:=]i$## ? '<num>' : '';
168 print $fd ' ' x 17, join(', ', map { length $_ > 1 ?
169 "--$_" : "-$_" }
170 split /\|/,$_)," $x\n";
171 }
172 }
173 print $fd <<"";
174 \nGIT_SVN_ID may be set in the environment or via the --id/-i switch to an
175 arbitrary identifier if you're tracking multiple SVN branches/repositories in
176 one git repository and want to keep them separate. See git-svn(1) for more
177 information.
178
179 exit $exit;
180 }
181
182 sub version {
183 print "git-svn version $VERSION\n";
184 exit 0;
185 }
186
187 sub rebuild {
188 if (quiet_run(qw/git-rev-parse --verify/,"refs/remotes/$GIT_SVN^0")) {
189 copy_remote_ref();
190 }
191 $SVN_URL = shift or undef;
192 my $newest_rev = 0;
193 if ($_upgrade) {
194 sys('git-update-ref',"refs/remotes/$GIT_SVN","$GIT_SVN-HEAD");
195 } else {
196 check_upgrade_needed();
197 }
198
199 my $pid = open(my $rev_list,'-|');
200 defined $pid or croak $!;
201 if ($pid == 0) {
202 exec("git-rev-list","refs/remotes/$GIT_SVN") or croak $!;
203 }
204 my $latest;
205 while (<$rev_list>) {
206 chomp;
207 my $c = $_;
208 croak "Non-SHA1: $c\n" unless $c =~ /^$sha1$/o;
209 my @commit = grep(/^git-svn-id: /,`git-cat-file commit $c`);
210 next if (!@commit); # skip merges
211 my ($url, $rev, $uuid) = extract_metadata($commit[$#commit]);
212 if (!$rev || !$uuid) {
213 croak "Unable to extract revision or UUID from ",
214 "$c, $commit[$#commit]\n";
215 }
216
217 # if we merged or otherwise started elsewhere, this is
218 # how we break out of it
219 next if (defined $SVN_UUID && ($uuid ne $SVN_UUID));
220 next if (defined $SVN_URL && defined $url && ($url ne $SVN_URL));
221
222 unless (defined $latest) {
223 if (!$SVN_URL && !$url) {
224 croak "SVN repository location required: $url\n";
225 }
226 $SVN_URL ||= $url;
227 $SVN_UUID ||= $uuid;
228 setup_git_svn();
229 $latest = $rev;
230 }
231 revdb_set($REVDB, $rev, $c);
232 print "r$rev = $c\n";
233 $newest_rev = $rev if ($rev > $newest_rev);
234 }
235 close $rev_list or croak $?;
236
237 goto out if $_use_lib;
238 if (!chdir $SVN_WC) {
239 svn_cmd_checkout($SVN_URL, $latest, $SVN_WC);
240 chdir $SVN_WC or croak $!;
241 }
242
243 $pid = fork;
244 defined $pid or croak $!;
245 if ($pid == 0) {
246 my @svn_up = qw(svn up);
247 push @svn_up, '--ignore-externals' unless $_no_ignore_ext;
248 sys(@svn_up,"-r$newest_rev");
249 $ENV{GIT_INDEX_FILE} = $GIT_SVN_INDEX;
250 index_changes();
251 exec('git-write-tree') or croak $!;
252 }
253 waitpid $pid, 0;
254 croak $? if $?;
255 out:
256 if ($_upgrade) {
257 print STDERR <<"";
258 Keeping deprecated refs/head/$GIT_SVN-HEAD for now. Please remove it
259 when you have upgraded your tools and habits to use refs/remotes/$GIT_SVN
260
261 }
262 }
263
264 sub init {
265 my $url = shift or die "SVN repository location required " .
266 "as a command-line argument\n";
267 $url =~ s!/+$!!; # strip trailing slash
268
269 if (my $repo_path = shift) {
270 unless (-d $repo_path) {
271 mkpath([$repo_path]);
272 }
273 $GIT_DIR = $ENV{GIT_DIR} = $repo_path . "/.git";
274 init_vars();
275 }
276
277 $SVN_URL = $url;
278 unless (-d $GIT_DIR) {
279 my @init_db = ('git-init-db');
280 push @init_db, "--template=$_template" if defined $_template;
281 push @init_db, "--shared" if defined $_shared;
282 sys(@init_db);
283 }
284 setup_git_svn();
285 }
286
287 sub fetch {
288 check_upgrade_needed();
289 $SVN_URL ||= file_to_s("$GIT_SVN_DIR/info/url");
290 my $ret = $_use_lib ? fetch_lib(@_) : fetch_cmd(@_);
291 if ($ret->{commit} && quiet_run(qw(git-rev-parse --verify
292 refs/heads/master^0))) {
293 sys(qw(git-update-ref refs/heads/master),$ret->{commit});
294 }
295 return $ret;
296 }
297
298 sub fetch_cmd {
299 my (@parents) = @_;
300 my @log_args = -d $SVN_WC ? ($SVN_WC) : ($SVN_URL);
301 unless ($_revision) {
302 $_revision = -d $SVN_WC ? 'BASE:HEAD' : '0:HEAD';
303 }
304 push @log_args, "-r$_revision";
305 push @log_args, '--stop-on-copy' unless $_no_stop_copy;
306
307 my $svn_log = svn_log_raw(@log_args);
308
309 my $base = next_log_entry($svn_log) or croak "No base revision!\n";
310 # don't need last_revision from grab_base_rev() because
311 # user could've specified a different revision to skip (they
312 # didn't want to import certain revisions into git for whatever
313 # reason, so trust $base->{revision} instead.
314 my (undef, $last_commit) = svn_grab_base_rev();
315 unless (-d $SVN_WC) {
316 svn_cmd_checkout($SVN_URL,$base->{revision},$SVN_WC);
317 chdir $SVN_WC or croak $!;
318 read_uuid();
319 $last_commit = git_commit($base, @parents);
320 assert_tree($last_commit);
321 } else {
322 chdir $SVN_WC or croak $!;
323 read_uuid();
324 # looks like a user manually cp'd and svn switch'ed
325 unless ($last_commit) {
326 sys(qw/svn revert -R ./);
327 assert_svn_wc_clean($base->{revision});
328 $last_commit = git_commit($base, @parents);
329 assert_tree($last_commit);
330 }
331 }
332 my @svn_up = qw(svn up);
333 push @svn_up, '--ignore-externals' unless $_no_ignore_ext;
334 my $last = $base;
335 while (my $log_msg = next_log_entry($svn_log)) {
336 if ($last->{revision} >= $log_msg->{revision}) {
337 croak "Out of order: last >= current: ",
338 "$last->{revision} >= $log_msg->{revision}\n";
339 }
340 # Revert is needed for cases like:
341 # https://svn.musicpd.org/Jamming/trunk (r166:167), but
342 # I can't seem to reproduce something like that on a test...
343 sys(qw/svn revert -R ./);
344 assert_svn_wc_clean($last->{revision});
345 sys(@svn_up,"-r$log_msg->{revision}");
346 $last_commit = git_commit($log_msg, $last_commit, @parents);
347 $last = $log_msg;
348 }
349 close $svn_log->{fh};
350 $last->{commit} = $last_commit;
351 return $last;
352 }
353
354 sub fetch_lib {
355 my (@parents) = @_;
356 $SVN_URL ||= file_to_s("$GIT_SVN_DIR/info/url");
357 my $repo;
358 ($repo, $SVN_PATH) = repo_path_split($SVN_URL);
359 $SVN_LOG ||= libsvn_connect($repo);
360 $SVN ||= libsvn_connect($repo);
361 my ($last_rev, $last_commit) = svn_grab_base_rev();
362 my ($base, $head) = libsvn_parse_revision($last_rev);
363 if ($base > $head) {
364 return { revision => $last_rev, commit => $last_commit }
365 }
366 my $index = set_index($GIT_SVN_INDEX);
367
368 # limit ourselves and also fork() since get_log won't release memory
369 # after processing a revision and SVN stuff seems to leak
370 my $inc = 1000;
371 my ($min, $max) = ($base, $head < $base+$inc ? $head : $base+$inc);
372 read_uuid();
373 if (defined $last_commit) {
374 unless (-e $GIT_SVN_INDEX) {
375 sys(qw/git-read-tree/, $last_commit);
376 }
377 chomp (my $x = `git-write-tree`);
378 my ($y) = (`git-cat-file commit $last_commit`
379 =~ /^tree ($sha1)/m);
380 if ($y ne $x) {
381 unlink $GIT_SVN_INDEX or croak $!;
382 sys(qw/git-read-tree/, $last_commit);
383 }
384 chomp ($x = `git-write-tree`);
385 if ($y ne $x) {
386 print STDERR "trees ($last_commit) $y != $x\n",
387 "Something is seriously wrong...\n";
388 }
389 }
390 while (1) {
391 # fork, because using SVN::Pool with get_log() still doesn't
392 # seem to help enough to keep memory usage down.
393 defined(my $pid = fork) or croak $!;
394 if (!$pid) {
395 $SVN::Error::handler = \&libsvn_skip_unknown_revs;
396
397 # Yes I'm perfectly aware that the fourth argument
398 # below is the limit revisions number. Unfortunately
399 # performance sucks with it enabled, so it's much
400 # faster to fetch revision ranges instead of relying
401 # on the limiter.
402 libsvn_get_log($SVN_LOG, '/'.$SVN_PATH,
403 $min, $max, 0, 1, 1,
404 sub {
405 my $log_msg;
406 if ($last_commit) {
407 $log_msg = libsvn_fetch(
408 $last_commit, @_);
409 $last_commit = git_commit(
410 $log_msg,
411 $last_commit,
412 @parents);
413 } else {
414 $log_msg = libsvn_new_tree(@_);
415 $last_commit = git_commit(
416 $log_msg, @parents);
417 }
418 });
419 exit 0;
420 }
421 waitpid $pid, 0;
422 croak $? if $?;
423 ($last_rev, $last_commit) = svn_grab_base_rev();
424 last if ($max >= $head);
425 $min = $max + 1;
426 $max += $inc;
427 $max = $head if ($max > $head);
428 }
429 restore_index($index);
430 return { revision => $last_rev, commit => $last_commit };
431 }
432
433 sub commit {
434 my (@commits) = @_;
435 check_upgrade_needed();
436 if ($_stdin || !@commits) {
437 print "Reading from stdin...\n";
438 @commits = ();
439 while (<STDIN>) {
440 if (/\b($sha1_short)\b/o) {
441 unshift @commits, $1;
442 }
443 }
444 }
445 my @revs;
446 foreach my $c (@commits) {
447 chomp(my @tmp = safe_qx('git-rev-parse',$c));
448 if (scalar @tmp == 1) {
449 push @revs, $tmp[0];
450 } elsif (scalar @tmp > 1) {
451 push @revs, reverse (safe_qx('git-rev-list',@tmp));
452 } else {
453 die "Failed to rev-parse $c\n";
454 }
455 }
456 chomp @revs;
457 $_use_lib ? commit_lib(@revs) : commit_cmd(@revs);
458 print "Done committing ",scalar @revs," revisions to SVN\n";
459 }
460
461 sub commit_cmd {
462 my (@revs) = @_;
463
464 chdir $SVN_WC or croak "Unable to chdir $SVN_WC: $!\n";
465 my $info = svn_info('.');
466 my $fetched = fetch();
467 if ($info->{Revision} != $fetched->{revision}) {
468 print STDERR "There are new revisions that were fetched ",
469 "and need to be merged (or acknowledged) ",
470 "before committing.\n";
471 exit 1;
472 }
473 $info = svn_info('.');
474 read_uuid($info);
475 my $last = $fetched;
476 foreach my $c (@revs) {
477 my $mods = svn_checkout_tree($last, $c);
478 if (scalar @$mods == 0) {
479 print "Skipping, no changes detected\n";
480 next;
481 }
482 $last = svn_commit_tree($last, $c);
483 }
484 }
485
486 sub commit_lib {
487 my (@revs) = @_;
488 my ($r_last, $cmt_last) = svn_grab_base_rev();
489 defined $r_last or die "Must have an existing revision to commit\n";
490 my $fetched = fetch();
491 if ($r_last != $fetched->{revision}) {
492 print STDERR "There are new revisions that were fetched ",
493 "and need to be merged (or acknowledged) ",
494 "before committing.\n",
495 "last rev: $r_last\n",
496 " current: $fetched->{revision}\n";
497 exit 1;
498 }
499 read_uuid();
500 my @lock = $SVN::Core::VERSION ge '1.2.0' ? (undef, 0) : ();
501 my $commit_msg = "$GIT_SVN_DIR/.svn-commit.tmp.$$";
502
503 set_svn_commit_env();
504 foreach my $c (@revs) {
505 my $log_msg = get_commit_message($c, $commit_msg);
506
507 # fork for each commit because there's a memory leak I
508 # can't track down... (it's probably in the SVN code)
509 defined(my $pid = open my $fh, '-|') or croak $!;
510 if (!$pid) {
511 my $ed = SVN::Git::Editor->new(
512 { r => $r_last,
513 ra => $SVN,
514 c => $c,
515 svn_path => $SVN_PATH
516 },
517 $SVN->get_commit_editor(
518 $log_msg->{msg},
519 sub {
520 libsvn_commit_cb(
521 @_, $c,
522 $log_msg->{msg},
523 $r_last,
524 $cmt_last)
525 },
526 @lock)
527 );
528 my $mods = libsvn_checkout_tree($cmt_last, $c, $ed);
529 if (@$mods == 0) {
530 print "No changes\nr$r_last = $cmt_last\n";
531 $ed->abort_edit;
532 } else {
533 $ed->close_edit;
534 }
535 exit 0;
536 }
537 my ($r_new, $cmt_new, $no);
538 while (<$fh>) {
539 print $_;
540 chomp;
541 if (/^r(\d+) = ($sha1)$/o) {
542 ($r_new, $cmt_new) = ($1, $2);
543 } elsif ($_ eq 'No changes') {
544 $no = 1;
545 }
546 }
547 close $fh or croak $?;
548 if (! defined $r_new && ! defined $cmt_new) {
549 unless ($no) {
550 die "Failed to parse revision information\n";
551 }
552 } else {
553 ($r_last, $cmt_last) = ($r_new, $cmt_new);
554 }
555 }
556 $ENV{LC_ALL} = 'C';
557 unlink $commit_msg;
558 }
559
560 sub show_ignore {
561 $SVN_URL ||= file_to_s("$GIT_SVN_DIR/info/url");
562 $_use_lib ? show_ignore_lib() : show_ignore_cmd();
563 }
564
565 sub show_ignore_cmd {
566 require File::Find or die $!;
567 if (defined $_revision) {
568 die "-r/--revision option doesn't work unless the Perl SVN ",
569 "libraries are used\n";
570 }
571 chdir $SVN_WC or croak $!;
572 my %ign;
573 File::Find::find({wanted=>sub{if(lstat $_ && -d _ && -d "$_/.svn"){
574 s#^\./##;
575 @{$ign{$_}} = svn_propget_base('svn:ignore', $_);
576 }}, no_chdir=>1},'.');
577
578 print "\n# /\n";
579 foreach (@{$ign{'.'}}) { print '/',$_ if /\S/ }
580 delete $ign{'.'};
581 foreach my $i (sort keys %ign) {
582 print "\n# ",$i,"\n";
583 foreach (@{$ign{$i}}) { print '/',$i,'/',$_ if /\S/ }
584 }
585 }
586
587 sub show_ignore_lib {
588 my $repo;
589 ($repo, $SVN_PATH) = repo_path_split($SVN_URL);
590 $SVN ||= libsvn_connect($repo);
591 my $r = defined $_revision ? $_revision : $SVN->get_latest_revnum;
592 libsvn_traverse_ignore(\*STDOUT, $SVN_PATH, $r);
593 }
594
595 sub graft_branches {
596 my $gr_file = "$GIT_DIR/info/grafts";
597 my ($grafts, $comments) = read_grafts($gr_file);
598 my $gr_sha1;
599
600 if (%$grafts) {
601 # temporarily disable our grafts file to make this idempotent
602 chomp($gr_sha1 = safe_qx(qw/git-hash-object -w/,$gr_file));
603 rename $gr_file, "$gr_file~$gr_sha1" or croak $!;
604 }
605
606 my $l_map = read_url_paths();
607 my @re = map { qr/$_/is } @_opt_m if @_opt_m;
608 unless ($_no_default_regex) {
609 push @re, (qr/\b(?:merge|merging|merged)\s+with\s+([\w\.\-]+)/i,
610 qr/\b(?:merge|merging|merged)\s+([\w\.\-]+)/i,
611 qr/\b(?:from|of)\s+([\w\.\-]+)/i );
612 }
613 foreach my $u (keys %$l_map) {
614 if (@re) {
615 foreach my $p (keys %{$l_map->{$u}}) {
616 graft_merge_msg($grafts,$l_map,$u,$p,@re);
617 }
618 }
619 unless ($_no_graft_copy) {
620 if ($_use_lib) {
621 graft_file_copy_lib($grafts,$l_map,$u);
622 } else {
623 graft_file_copy_cmd($grafts,$l_map,$u);
624 }
625 }
626 }
627 graft_tree_joins($grafts);
628
629 write_grafts($grafts, $comments, $gr_file);
630 unlink "$gr_file~$gr_sha1" if $gr_sha1;
631 }
632
633 sub multi_init {
634 my $url = shift;
635 $_trunk ||= 'trunk';
636 $_trunk =~ s#/+$##;
637 $url =~ s#/+$## if $url;
638 if ($_trunk !~ m#^[a-z\+]+://#) {
639 $_trunk = '/' . $_trunk if ($_trunk !~ m#^/#);
640 unless ($url) {
641 print STDERR "E: '$_trunk' is not a complete URL ",
642 "and a separate URL is not specified\n";
643 exit 1;
644 }
645 $_trunk = $url . $_trunk;
646 }
647 if ($GIT_SVN eq 'git-svn') {
648 print "GIT_SVN_ID set to 'trunk' for $_trunk\n";
649 $GIT_SVN = $ENV{GIT_SVN_ID} = 'trunk';
650 }
651 init_vars();
652 init($_trunk);
653 complete_url_ls_init($url, $_branches, '--branches/-b', '');
654 complete_url_ls_init($url, $_tags, '--tags/-t', 'tags/');
655 }
656
657 sub multi_fetch {
658 # try to do trunk first, since branches/tags
659 # may be descended from it.
660 if (-e "$GIT_DIR/svn/trunk/info/url") {
661 fetch_child_id('trunk', @_);
662 }
663 rec_fetch('', "$GIT_DIR/svn", @_);
664 }
665
666 sub show_log {
667 my (@args) = @_;
668 my ($r_min, $r_max);
669 my $r_last = -1; # prevent dupes
670 rload_authors() if $_authors;
671 if (defined $TZ) {
672 $ENV{TZ} = $TZ;
673 } else {
674 delete $ENV{TZ};
675 }
676 if (defined $_revision) {
677 if ($_revision =~ /^(\d+):(\d+)$/) {
678 ($r_min, $r_max) = ($1, $2);
679 } elsif ($_revision =~ /^\d+$/) {
680 $r_min = $r_max = $_revision;
681 } else {
682 print STDERR "-r$_revision is not supported, use ",
683 "standard \'git log\' arguments instead\n";
684 exit 1;
685 }
686 }
687
688 my $pid = open(my $log,'-|');
689 defined $pid or croak $!;
690 if (!$pid) {
691 exec(git_svn_log_cmd($r_min,$r_max), @args) or croak $!;
692 }
693 setup_pager();
694 my (@k, $c, $d);
695
696 while (<$log>) {
697 if (/^commit ($sha1_short)/o) {
698 my $cmt = $1;
699 if ($c && cmt_showable($c) && $c->{r} != $r_last) {
700 $r_last = $c->{r};
701 process_commit($c, $r_min, $r_max, \@k) or
702 goto out;
703 }
704 $d = undef;
705 $c = { c => $cmt };
706 } elsif (/^author (.+) (\d+) ([\-\+]?\d+)$/) {
707 get_author_info($c, $1, $2, $3);
708 } elsif (/^(?:tree|parent|committer) /) {
709 # ignore
710 } elsif (/^:\d{6} \d{6} $sha1_short/o) {
711 push @{$c->{raw}}, $_;
712 } elsif (/^diff /) {
713 $d = 1;
714 push @{$c->{diff}}, $_;
715 } elsif ($d) {
716 push @{$c->{diff}}, $_;
717 } elsif (/^ (git-svn-id:.+)$/) {
718 (undef, $c->{r}, undef) = extract_metadata($1);
719 } elsif (s/^ //) {
720 push @{$c->{l}}, $_;
721 }
722 }
723 if ($c && defined $c->{r} && $c->{r} != $r_last) {
724 $r_last = $c->{r};
725 process_commit($c, $r_min, $r_max, \@k);
726 }
727 if (@k) {
728 my $swap = $r_max;
729 $r_max = $r_min;
730 $r_min = $swap;
731 process_commit($_, $r_min, $r_max) foreach reverse @k;
732 }
733 out:
734 close $log;
735 print '-' x72,"\n" unless $_incremental || $_oneline;
736 }
737
738 sub commit_diff_usage {
739 print STDERR "Usage: $0 commit-diff <tree-ish> <tree-ish> [<URL>]\n";
740 exit 1
741 }
742
743 sub commit_diff {
744 if (!$_use_lib) {
745 print STDERR "commit-diff must be used with SVN libraries\n";
746 exit 1;
747 }
748 my $ta = shift or commit_diff_usage();
749 my $tb = shift or commit_diff_usage();
750 if (!eval { $SVN_URL = shift || file_to_s("$GIT_SVN_DIR/info/url") }) {
751 print STDERR "Needed URL or usable git-svn id command-line\n";
752 commit_diff_usage();
753 }
754 if (defined $_message && defined $_file) {
755 print STDERR "Both --message/-m and --file/-F specified ",
756 "for the commit message.\n",
757 "I have no idea what you mean\n";
758 exit 1;
759 }
760 if (defined $_file) {
761 $_message = file_to_s($_file);
762 } else {
763 $_message ||= get_commit_message($tb,
764 "$GIT_DIR/.svn-commit.tmp.$$")->{msg};
765 }
766 my $repo;
767 ($repo, $SVN_PATH) = repo_path_split($SVN_URL);
768 $SVN_LOG ||= libsvn_connect($repo);
769 $SVN ||= libsvn_connect($repo);
770 my @lock = $SVN::Core::VERSION ge '1.2.0' ? (undef, 0) : ();
771 my $ed = SVN::Git::Editor->new({ r => $SVN->get_latest_revnum,
772 ra => $SVN, c => $tb,
773 svn_path => $SVN_PATH
774 },
775 $SVN->get_commit_editor($_message,
776 sub {print "Committed $_[0]\n"},@lock)
777 );
778 my $mods = libsvn_checkout_tree($ta, $tb, $ed);
779 if (@$mods == 0) {
780 print "No changes\n$ta == $tb\n";
781 $ed->abort_edit;
782 } else {
783 $ed->close_edit;
784 }
785 }
786
787 ########################### utility functions #########################
788
789 sub cmt_showable {
790 my ($c) = @_;
791 return 1 if defined $c->{r};
792 if ($c->{l} && $c->{l}->[-1] eq "...\n" &&
793 $c->{a_raw} =~ /\@([a-f\d\-]+)>$/) {
794 my @msg = safe_qx(qw/git-cat-file commit/, $c->{c});
795 shift @msg while ($msg[0] ne "\n");
796 shift @msg;
797 @{$c->{l}} = grep !/^git-svn-id: /, @msg;
798
799 (undef, $c->{r}, undef) = extract_metadata(
800 (grep(/^git-svn-id: /, @msg))[-1]);
801 }
802 return defined $c->{r};
803 }
804
805 sub git_svn_log_cmd {
806 my ($r_min, $r_max) = @_;
807 my @cmd = (qw/git-log --abbrev-commit --pretty=raw
808 --default/, "refs/remotes/$GIT_SVN");
809 push @cmd, '--summary' if $_verbose;
810 return @cmd unless defined $r_max;
811 if ($r_max == $r_min) {
812 push @cmd, '--max-count=1';
813 if (my $c = revdb_get($REVDB, $r_max)) {
814 push @cmd, $c;
815 }
816 } else {
817 my ($c_min, $c_max);
818 $c_max = revdb_get($REVDB, $r_max);
819 $c_min = revdb_get($REVDB, $r_min);
820 if ($c_min && $c_max) {
821 if ($r_max > $r_max) {
822 push @cmd, "$c_min..$c_max";
823 } else {
824 push @cmd, "$c_max..$c_min";
825 }
826 } elsif ($r_max > $r_min) {
827 push @cmd, $c_max;
828 } else {
829 push @cmd, $c_min;
830 }
831 }
832 return @cmd;
833 }
834
835 sub fetch_child_id {
836 my $id = shift;
837 print "Fetching $id\n";
838 my $ref = "$GIT_DIR/refs/remotes/$id";
839 defined(my $pid = open my $fh, '-|') or croak $!;
840 if (!$pid) {
841 $_repack = undef;
842 $GIT_SVN = $ENV{GIT_SVN_ID} = $id;
843 init_vars();
844 fetch(@_);
845 exit 0;
846 }
847 while (<$fh>) {
848 print $_;
849 check_repack() if (/^r\d+ = $sha1/);
850 }
851 close $fh or croak $?;
852 }
853
854 sub rec_fetch {
855 my ($pfx, $p, @args) = @_;
856 my @dir;
857 foreach (sort <$p/*>) {
858 if (-r "$_/info/url") {
859 $pfx .= '/' if $pfx && $pfx !~ m!/$!;
860 my $id = $pfx . basename $_;
861 next if $id eq 'trunk';
862 fetch_child_id($id, @args);
863 } elsif (-d $_) {
864 push @dir, $_;
865 }
866 }
867 foreach (@dir) {
868 my $x = $_;
869 $x =~ s!^\Q$GIT_DIR\E/svn/!!;
870 rec_fetch($x, $_);
871 }
872 }
873
874 sub complete_url_ls_init {
875 my ($url, $var, $switch, $pfx) = @_;
876 unless ($var) {
877 print STDERR "W: $switch not specified\n";
878 return;
879 }
880 $var =~ s#/+$##;
881 if ($var !~ m#^[a-z\+]+://#) {
882 $var = '/' . $var if ($var !~ m#^/#);
883 unless ($url) {
884 print STDERR "E: '$var' is not a complete URL ",
885 "and a separate URL is not specified\n";
886 exit 1;
887 }
888 $var = $url . $var;
889 }
890 chomp(my @ls = $_use_lib ? libsvn_ls_fullurl($var)
891 : safe_qx(qw/svn ls --non-interactive/, $var));
892 my $old = $GIT_SVN;
893 defined(my $pid = fork) or croak $!;
894 if (!$pid) {
895 foreach my $u (map { "$var/$_" } (grep m!/$!, @ls)) {
896 $u =~ s#/+$##;
897 if ($u !~ m!\Q$var\E/(.+)$!) {
898 print STDERR "W: Unrecognized URL: $u\n";
899 die "This should never happen\n";
900 }
901 my $id = $pfx.$1;
902 print "init $u => $id\n";
903 $GIT_SVN = $ENV{GIT_SVN_ID} = $id;
904 init_vars();
905 init($u);
906 }
907 exit 0;
908 }
909 waitpid $pid, 0;
910 croak $? if $?;
911 }
912
913 sub common_prefix {
914 my $paths = shift;
915 my %common;
916 foreach (@$paths) {
917 my @tmp = split m#/#, $_;
918 my $p = '';
919 while (my $x = shift @tmp) {
920 $p .= "/$x";
921 $common{$p} ||= 0;
922 $common{$p}++;
923 }
924 }
925 foreach (sort {length $b <=> length $a} keys %common) {
926 if ($common{$_} == @$paths) {
927 return $_;
928 }
929 }
930 return '';
931 }
932
933 # grafts set here are 'stronger' in that they're based on actual tree
934 # matches, and won't be deleted from merge-base checking in write_grafts()
935 sub graft_tree_joins {
936 my $grafts = shift;
937 map_tree_joins() if (@_branch_from && !%tree_map);
938 return unless %tree_map;
939
940 git_svn_each(sub {
941 my $i = shift;
942 defined(my $pid = open my $fh, '-|') or croak $!;
943 if (!$pid) {
944 exec qw/git-rev-list --pretty=raw/,
945 "refs/remotes/$i" or croak $!;
946 }
947 while (<$fh>) {
948 next unless /^commit ($sha1)$/o;
949 my $c = $1;
950 my ($t) = (<$fh> =~ /^tree ($sha1)$/o);
951 next unless $tree_map{$t};
952
953 my $l;
954 do {
955 $l = readline $fh;
956 } until ($l =~ /^committer (?:.+) (\d+) ([\-\+]?\d+)$/);
957
958 my ($s, $tz) = ($1, $2);
959 if ($tz =~ s/^\+//) {
960 $s += tz_to_s_offset($tz);
961 } elsif ($tz =~ s/^\-//) {
962 $s -= tz_to_s_offset($tz);
963 }
964
965 my ($url_a, $r_a, $uuid_a) = cmt_metadata($c);
966
967 foreach my $p (@{$tree_map{$t}}) {
968 next if $p eq $c;
969 my $mb = eval {
970 safe_qx('git-merge-base', $c, $p)
971 };
972 next unless ($@ || $?);
973 if (defined $r_a) {
974 # see if SVN says it's a relative
975 my ($url_b, $r_b, $uuid_b) =
976 cmt_metadata($p);
977 next if (defined $url_b &&
978 defined $url_a &&
979 ($url_a eq $url_b) &&
980 ($uuid_a eq $uuid_b));
981 if ($uuid_a eq $uuid_b) {
982 if ($r_b < $r_a) {
983 $grafts->{$c}->{$p} = 2;
984 next;
985 } elsif ($r_b > $r_a) {
986 $grafts->{$p}->{$c} = 2;
987 next;
988 }
989 }
990 }
991 my $ct = get_commit_time($p);
992 if ($ct < $s) {
993 $grafts->{$c}->{$p} = 2;
994 } elsif ($ct > $s) {
995 $grafts->{$p}->{$c} = 2;
996 }
997 # what should we do when $ct == $s ?
998 }
999 }
1000 close $fh or croak $?;
1001 });
1002 }
1003
1004 # this isn't funky-filename safe, but good enough for now...
1005 sub graft_file_copy_cmd {
1006 my ($grafts, $l_map, $u) = @_;
1007 my $paths = $l_map->{$u};
1008 my $pfx = common_prefix([keys %$paths]);
1009 $SVN_URL ||= $u.$pfx;
1010 my $pid = open my $fh, '-|';
1011 defined $pid or croak $!;
1012 unless ($pid) {
1013 my @exec = qw/svn log -v/;
1014 push @exec, "-r$_revision" if defined $_revision;
1015 exec @exec, $u.$pfx or croak $!;
1016 }
1017 my ($r, $mp) = (undef, undef);
1018 while (<$fh>) {
1019 chomp;
1020 if (/^\-{72}$/) {
1021 $mp = $r = undef;
1022 } elsif (/^r(\d+) \| /) {
1023 $r = $1 unless defined $r;
1024 } elsif (/^Changed paths:/) {
1025 $mp = 1;
1026 } elsif ($mp && m#^ [AR] /(\S.*?) \(from /(\S+?):(\d+)\)$#) {
1027 my ($p1, $p0, $r0) = ($1, $2, $3);
1028 my $c = find_graft_path_commit($paths, $p1, $r);
1029 next unless $c;
1030 find_graft_path_parents($grafts, $paths, $c, $p0, $r0);
1031 }
1032 }
1033 }
1034
1035 sub graft_file_copy_lib {
1036 my ($grafts, $l_map, $u) = @_;
1037 my $tree_paths = $l_map->{$u};
1038 my $pfx = common_prefix([keys %$tree_paths]);
1039 my ($repo, $path) = repo_path_split($u.$pfx);
1040 $SVN_LOG ||= libsvn_connect($repo);
1041 $SVN ||= libsvn_connect($repo);
1042
1043 my ($base, $head) = libsvn_parse_revision();
1044 my $inc = 1000;
1045 my ($min, $max) = ($base, $head < $base+$inc ? $head : $base+$inc);
1046 my $eh = $SVN::Error::handler;
1047 $SVN::Error::handler = \&libsvn_skip_unknown_revs;
1048 while (1) {
1049 my $pool = SVN::Pool->new;
1050 libsvn_get_log($SVN_LOG, "/$path", $min, $max, 0, 1, 1,
1051 sub {
1052 libsvn_graft_file_copies($grafts, $tree_paths,
1053 $path, @_);
1054 }, $pool);
1055 $pool->clear;
1056 last if ($max >= $head);
1057 $min = $max + 1;
1058 $max += $inc;
1059 $max = $head if ($max > $head);
1060 }
1061 $SVN::Error::handler = $eh;
1062 }
1063
1064 sub process_merge_msg_matches {
1065 my ($grafts, $l_map, $u, $p, $c, @matches) = @_;
1066 my (@strong, @weak);
1067 foreach (@matches) {
1068 # merging with ourselves is not interesting
1069 next if $_ eq $p;
1070 if ($l_map->{$u}->{$_}) {
1071 push @strong, $_;
1072 } else {
1073 push @weak, $_;
1074 }
1075 }
1076 foreach my $w (@weak) {
1077 last if @strong;
1078 # no exact match, use branch name as regexp.
1079 my $re = qr/\Q$w\E/i;
1080 foreach (keys %{$l_map->{$u}}) {
1081 if (/$re/) {
1082 push @strong, $l_map->{$u}->{$_};
1083 last;
1084 }
1085 }
1086 last if @strong;
1087 $w = basename($w);
1088 $re = qr/\Q$w\E/i;
1089 foreach (keys %{$l_map->{$u}}) {
1090 if (/$re/) {
1091 push @strong, $l_map->{$u}->{$_};
1092 last;
1093 }
1094 }
1095 }
1096 my ($rev) = ($c->{m} =~ /^git-svn-id:\s(?:\S+?)\@(\d+)
1097 \s(?:[a-f\d\-]+)$/xsm);
1098 unless (defined $rev) {
1099 ($rev) = ($c->{m} =~/^git-svn-id:\s(\d+)
1100 \@(?:[a-f\d\-]+)/xsm);
1101 return unless defined $rev;
1102 }
1103 foreach my $m (@strong) {
1104 my ($r0, $s0) = find_rev_before($rev, $m, 1);
1105 $grafts->{$c->{c}}->{$s0} = 1 if defined $s0;
1106 }
1107 }
1108
1109 sub graft_merge_msg {
1110 my ($grafts, $l_map, $u, $p, @re) = @_;
1111
1112 my $x = $l_map->{$u}->{$p};
1113 my $rl = rev_list_raw($x);
1114 while (my $c = next_rev_list_entry($rl)) {
1115 foreach my $re (@re) {
1116 my (@br) = ($c->{m} =~ /$re/g);
1117 next unless @br;
1118 process_merge_msg_matches($grafts,$l_map,$u,$p,$c,@br);
1119 }
1120 }
1121 }
1122
1123 sub read_uuid {
1124 return if $SVN_UUID;
1125 if ($_use_lib) {
1126 my $pool = SVN::Pool->new;
1127 $SVN_UUID = $SVN->get_uuid($pool);
1128 $pool->clear;
1129 } else {
1130 my $info = shift || svn_info('.');
1131 $SVN_UUID = $info->{'Repository UUID'} or
1132 croak "Repository UUID unreadable\n";
1133 }
1134 }
1135
1136 sub quiet_run {
1137 my $pid = fork;
1138 defined $pid or croak $!;
1139 if (!$pid) {
1140 open my $null, '>', '/dev/null' or croak $!;
1141 open STDERR, '>&', $null or croak $!;
1142 open STDOUT, '>&', $null or croak $!;
1143 exec @_ or croak $!;
1144 }
1145 waitpid $pid, 0;
1146 return $?;
1147 }
1148
1149 sub repo_path_split {
1150 my $full_url = shift;
1151 $full_url =~ s#/+$##;
1152
1153 foreach (@repo_path_split_cache) {
1154 if ($full_url =~ s#$_##) {
1155 my $u = $1;
1156 $full_url =~ s#^/+##;
1157 return ($u, $full_url);
1158 }
1159 }
1160
1161 if ($_use_lib) {
1162 my $tmp = libsvn_connect($full_url);
1163 my $url = $tmp->get_repos_root;
1164 $full_url =~ s#^\Q$url\E/*##;
1165 push @repo_path_split_cache, qr/^(\Q$url\E)/;
1166 return ($url, $full_url);
1167 } else {
1168 my ($url, $path) = ($full_url =~ m!^([a-z\+]+://[^/]*)(.*)$!i);
1169 $path =~ s#^/+##;
1170 my @paths = split(m#/+#, $path);
1171 while (quiet_run(qw/svn ls --non-interactive/, $url)) {
1172 my $n = shift @paths || last;
1173 $url .= "/$n";
1174 }
1175 push @repo_path_split_cache, qr/^(\Q$url\E)/;
1176 $path = join('/',@paths);
1177 return ($url, $path);
1178 }
1179 }
1180
1181 sub setup_git_svn {
1182 defined $SVN_URL or croak "SVN repository location required\n";
1183 unless (-d $GIT_DIR) {
1184 croak "GIT_DIR=$GIT_DIR does not exist!\n";
1185 }
1186 mkpath([$GIT_SVN_DIR]);
1187 mkpath(["$GIT_SVN_DIR/info"]);
1188 open my $fh, '>>',$REVDB or croak $!;
1189 close $fh;
1190 s_to_file($SVN_URL,"$GIT_SVN_DIR/info/url");
1191
1192 }
1193
1194 sub assert_svn_wc_clean {
1195 return if $_use_lib;
1196 my ($svn_rev) = @_;
1197 croak "$svn_rev is not an integer!\n" unless ($svn_rev =~ /^\d+$/);
1198 my $lcr = svn_info('.')->{'Last Changed Rev'};
1199 if ($svn_rev != $lcr) {
1200 print STDERR "Checking for copy-tree ... ";
1201 my @diff = grep(/^Index: /,(safe_qx(qw(svn diff),
1202 "-r$lcr:$svn_rev")));
1203 if (@diff) {
1204 croak "Nope! Expected r$svn_rev, got r$lcr\n";
1205 } else {
1206 print STDERR "OK!\n";
1207 }
1208 }
1209 my @status = grep(!/^Performing status on external/,(`svn status`));
1210 @status = grep(!/^\s*$/,@status);
1211 if (scalar @status) {
1212 print STDERR "Tree ($SVN_WC) is not clean:\n";
1213 print STDERR $_ foreach @status;
1214 croak;
1215 }
1216 }
1217
1218 sub get_tree_from_treeish {
1219 my ($treeish) = @_;
1220 croak "Not a sha1: $treeish\n" unless $treeish =~ /^$sha1$/o;
1221 chomp(my $type = `git-cat-file -t $treeish`);
1222 my $expected;
1223 while ($type eq 'tag') {
1224 chomp(($treeish, $type) = `git-cat-file tag $treeish`);
1225 }
1226 if ($type eq 'commit') {
1227 $expected = (grep /^tree /,`git-cat-file commit $treeish`)[0];
1228 ($expected) = ($expected =~ /^tree ($sha1)$/);
1229 die "Unable to get tree from $treeish\n" unless $expected;
1230 } elsif ($type eq 'tree') {
1231 $expected = $treeish;
1232 } else {
1233 die "$treeish is a $type, expected tree, tag or commit\n";
1234 }
1235 return $expected;
1236 }
1237
1238 sub assert_tree {
1239 return if $_use_lib;
1240 my ($treeish) = @_;
1241 my $expected = get_tree_from_treeish($treeish);
1242
1243 my $tmpindex = $GIT_SVN_INDEX.'.assert-tmp';
1244 if (-e $tmpindex) {
1245 unlink $tmpindex or croak $!;
1246 }
1247 my $old_index = set_index($tmpindex);
1248 index_changes(1);
1249 chomp(my $tree = `git-write-tree`);
1250 restore_index($old_index);
1251 if ($tree ne $expected) {
1252 croak "Tree mismatch, Got: $tree, Expected: $expected\n";
1253 }
1254 unlink $tmpindex;
1255 }
1256
1257 sub parse_diff_tree {
1258 my $diff_fh = shift;
1259 local $/ = "\0";
1260 my $state = 'meta';
1261 my @mods;
1262 while (<$diff_fh>) {
1263 chomp $_; # this gets rid of the trailing "\0"
1264 if ($state eq 'meta' && /^:(\d{6})\s(\d{6})\s
1265 $sha1\s($sha1)\s([MTCRAD])\d*$/xo) {
1266 push @mods, { mode_a => $1, mode_b => $2,
1267 sha1_b => $3, chg => $4 };
1268 if ($4 =~ /^(?:C|R)$/) {
1269 $state = 'file_a';
1270 } else {
1271 $state = 'file_b';
1272 }
1273 } elsif ($state eq 'file_a') {
1274 my $x = $mods[$#mods] or croak "Empty array\n";
1275 if ($x->{chg} !~ /^(?:C|R)$/) {
1276 croak "Error parsing $_, $x->{chg}\n";
1277 }
1278 $x->{file_a} = $_;
1279 $state = 'file_b';
1280 } elsif ($state eq 'file_b') {
1281 my $x = $mods[$#mods] or croak "Empty array\n";
1282 if (exists $x->{file_a} && $x->{chg} !~ /^(?:C|R)$/) {
1283 croak "Error parsing $_, $x->{chg}\n";
1284 }
1285 if (!exists $x->{file_a} && $x->{chg} =~ /^(?:C|R)$/) {
1286 croak "Error parsing $_, $x->{chg}\n";
1287 }
1288 $x->{file_b} = $_;
1289 $state = 'meta';
1290 } else {
1291 croak "Error parsing $_\n";
1292 }
1293 }
1294 close $diff_fh or croak $?;
1295
1296 return \@mods;
1297 }
1298
1299 sub svn_check_prop_executable {
1300 my $m = shift;
1301 return if -l $m->{file_b};
1302 if ($m->{mode_b} =~ /755$/) {
1303 chmod((0755 &~ umask),$m->{file_b}) or croak $!;
1304 if ($m->{mode_a} !~ /755$/) {
1305 sys(qw(svn propset svn:executable 1), $m->{file_b});
1306 }
1307 -x $m->{file_b} or croak "$m->{file_b} is not executable!\n";
1308 } elsif ($m->{mode_b} !~ /755$/ && $m->{mode_a} =~ /755$/) {
1309 sys(qw(svn propdel svn:executable), $m->{file_b});
1310 chmod((0644 &~ umask),$m->{file_b}) or croak $!;
1311 -x $m->{file_b} and croak "$m->{file_b} is executable!\n";
1312 }
1313 }
1314
1315 sub svn_ensure_parent_path {
1316 my $dir_b = dirname(shift);
1317 svn_ensure_parent_path($dir_b) if ($dir_b ne File::Spec->curdir);
1318 mkpath([$dir_b]) unless (-d $dir_b);
1319 sys(qw(svn add -N), $dir_b) unless (-d "$dir_b/.svn");
1320 }
1321
1322 sub precommit_check {
1323 my $mods = shift;
1324 my (%rm_file, %rmdir_check, %added_check);
1325
1326 my %o = ( D => 0, R => 1, C => 2, A => 3, M => 3, T => 3 );
1327 foreach my $m (sort { $o{$a->{chg}} <=> $o{$b->{chg}} } @$mods) {
1328 if ($m->{chg} eq 'R') {
1329 if (-d $m->{file_b}) {
1330 err_dir_to_file("$m->{file_a} => $m->{file_b}");
1331 }
1332 # dir/$file => dir/file/$file
1333 my $dirname = dirname($m->{file_b});
1334 while ($dirname ne File::Spec->curdir) {
1335 if ($dirname ne $m->{file_a}) {
1336 $dirname = dirname($dirname);
1337 next;
1338 }
1339 err_file_to_dir("$m->{file_a} => $m->{file_b}");
1340 }
1341 # baz/zzz => baz (baz is a file)
1342 $dirname = dirname($m->{file_a});
1343 while ($dirname ne File::Spec->curdir) {
1344 if ($dirname ne $m->{file_b}) {
1345 $dirname = dirname($dirname);
1346 next;
1347 }
1348 err_dir_to_file("$m->{file_a} => $m->{file_b}");
1349 }
1350 }
1351 if ($m->{chg} =~ /^(D|R)$/) {
1352 my $t = $1 eq 'D' ? 'file_b' : 'file_a';
1353 $rm_file{ $m->{$t} } = 1;
1354 my $dirname = dirname( $m->{$t} );
1355 my $basename = basename( $m->{$t} );
1356 $rmdir_check{$dirname}->{$basename} = 1;
1357 } elsif ($m->{chg} =~ /^(?:A|C)$/) {
1358 if (-d $m->{file_b}) {
1359 err_dir_to_file($m->{file_b});
1360 }
1361 my $dirname = dirname( $m->{file_b} );
1362 my $basename = basename( $m->{file_b} );
1363 $added_check{$dirname}->{$basename} = 1;
1364 while ($dirname ne File::Spec->curdir) {
1365 if ($rm_file{$dirname}) {
1366 err_file_to_dir($m->{file_b});
1367 }
1368 $dirname = dirname $dirname;
1369 }
1370 }
1371 }
1372 return (\%rmdir_check, \%added_check);
1373
1374 sub err_dir_to_file {
1375 my $file = shift;
1376 print STDERR "Node change from directory to file ",
1377 "is not supported by Subversion: ",$file,"\n";
1378 exit 1;
1379 }
1380 sub err_file_to_dir {
1381 my $file = shift;
1382 print STDERR "Node change from file to directory ",
1383 "is not supported by Subversion: ",$file,"\n";
1384 exit 1;
1385 }
1386 }
1387
1388
1389 sub get_diff {
1390 my ($from, $treeish) = @_;
1391 assert_tree($from);
1392 print "diff-tree $from $treeish\n";
1393 my $pid = open my $diff_fh, '-|';
1394 defined $pid or croak $!;
1395 if ($pid == 0) {
1396 my @diff_tree = qw(git-diff-tree -z -r);
1397 if ($_cp_similarity) {
1398 push @diff_tree, "-C$_cp_similarity";
1399 } else {
1400 push @diff_tree, '-C';
1401 }
1402 push @diff_tree, '--find-copies-harder' if $_find_copies_harder;
1403 push @diff_tree, "-l$_l" if defined $_l;
1404 exec(@diff_tree, $from, $treeish) or croak $!;
1405 }
1406 return parse_diff_tree($diff_fh);
1407 }
1408
1409 sub svn_checkout_tree {
1410 my ($from, $treeish) = @_;
1411 my $mods = get_diff($from->{commit}, $treeish);
1412 return $mods unless (scalar @$mods);
1413 my ($rm, $add) = precommit_check($mods);
1414
1415 my %o = ( D => 1, R => 0, C => -1, A => 3, M => 3, T => 3 );
1416 foreach my $m (sort { $o{$a->{chg}} <=> $o{$b->{chg}} } @$mods) {
1417 if ($m->{chg} eq 'C') {
1418 svn_ensure_parent_path( $m->{file_b} );
1419 sys(qw(svn cp), $m->{file_a}, $m->{file_b});
1420 apply_mod_line_blob($m);
1421 svn_check_prop_executable($m);
1422 } elsif ($m->{chg} eq 'D') {
1423 sys(qw(svn rm --force), $m->{file_b});
1424 } elsif ($m->{chg} eq 'R') {
1425 svn_ensure_parent_path( $m->{file_b} );
1426 sys(qw(svn mv --force), $m->{file_a}, $m->{file_b});
1427 apply_mod_line_blob($m);
1428 svn_check_prop_executable($m);
1429 } elsif ($m->{chg} eq 'M') {
1430 apply_mod_line_blob($m);
1431 svn_check_prop_executable($m);
1432 } elsif ($m->{chg} eq 'T') {
1433 sys(qw(svn rm --force),$m->{file_b});
1434 apply_mod_line_blob($m);
1435 sys(qw(svn add), $m->{file_b});
1436 svn_check_prop_executable($m);
1437 } elsif ($m->{chg} eq 'A') {
1438 svn_ensure_parent_path( $m->{file_b} );
1439 apply_mod_line_blob($m);
1440 sys(qw(svn add), $m->{file_b});
1441 svn_check_prop_executable($m);
1442 } else {
1443 croak "Invalid chg: $m->{chg}\n";
1444 }
1445 }
1446
1447 assert_tree($treeish);
1448 if ($_rmdir) { # remove empty directories
1449 handle_rmdir($rm, $add);
1450 }
1451 assert_tree($treeish);
1452 return $mods;
1453 }
1454
1455 sub libsvn_checkout_tree {
1456 my ($from, $treeish, $ed) = @_;
1457 my $mods = get_diff($from, $treeish);
1458 return $mods unless (scalar @$mods);
1459 my %o = ( D => 1, R => 0, C => -1, A => 3, M => 3, T => 3 );
1460 foreach my $m (sort { $o{$a->{chg}} <=> $o{$b->{chg}} } @$mods) {
1461 my $f = $m->{chg};
1462 if (defined $o{$f}) {
1463 $ed->$f($m, $_q);
1464 } else {
1465 croak "Invalid change type: $f\n";
1466 }
1467 }
1468 $ed->rmdirs($_q) if $_rmdir;
1469 return $mods;
1470 }
1471
1472 # svn ls doesn't work with respect to the current working tree, but what's
1473 # in the repository. There's not even an option for it... *sigh*
1474 # (added files don't show up and removed files remain in the ls listing)
1475 sub svn_ls_current {
1476 my ($dir, $rm, $add) = @_;
1477 chomp(my @ls = safe_qx('svn','ls',$dir));
1478 my @ret = ();
1479 foreach (@ls) {
1480 s#/$##; # trailing slashes are evil
1481 push @ret, $_ unless $rm->{$dir}->{$_};
1482 }
1483 if (exists $add->{$dir}) {
1484 push @ret, keys %{$add->{$dir}};
1485 }
1486 return \@ret;
1487 }
1488
1489 sub handle_rmdir {
1490 my ($rm, $add) = @_;
1491
1492 foreach my $dir (sort {length $b <=> length $a} keys %$rm) {
1493 my $ls = svn_ls_current($dir, $rm, $add);
1494 next if (scalar @$ls);
1495 sys(qw(svn rm --force),$dir);
1496
1497 my $dn = dirname $dir;
1498 $rm->{ $dn }->{ basename $dir } = 1;
1499 $ls = svn_ls_current($dn, $rm, $add);
1500 while (scalar @$ls == 0 && $dn ne File::Spec->curdir) {
1501 sys(qw(svn rm --force),$dn);
1502 $dir = basename $dn;
1503 $dn = dirname $dn;
1504 $rm->{ $dn }->{ $dir } = 1;
1505 $ls = svn_ls_current($dn, $rm, $add);
1506 }
1507 }
1508 }
1509
1510 sub get_commit_message {
1511 my ($commit, $commit_msg) = (@_);
1512 my %log_msg = ( msg => '' );
1513 open my $msg, '>', $commit_msg or croak $!;
1514
1515 chomp(my $type = `git-cat-file -t $commit`);
1516 if ($type eq 'commit' || $type eq 'tag') {
1517 my $pid = open my $msg_fh, '-|';
1518 defined $pid or croak $!;
1519
1520 if ($pid == 0) {
1521 exec('git-cat-file', $type, $commit) or croak $!;
1522 }
1523 my $in_msg = 0;
1524 while (<$msg_fh>) {
1525 if (!$in_msg) {
1526 $in_msg = 1 if (/^\s*$/);
1527 } elsif (/^git-svn-id: /) {
1528 # skip this, we regenerate the correct one
1529 # on re-fetch anyways
1530 } else {
1531 print $msg $_ or croak $!;
1532 }
1533 }
1534 close $msg_fh or croak $?;
1535 }
1536 close $msg or croak $!;
1537
1538 if ($_edit || ($type eq 'tree')) {
1539 my $editor = $ENV{VISUAL} || $ENV{EDITOR} || 'vi';
1540 system($editor, $commit_msg);
1541 }
1542
1543 # file_to_s removes all trailing newlines, so just use chomp() here:
1544 open $msg, '<', $commit_msg or croak $!;
1545 { local $/; chomp($log_msg{msg} = <$msg>); }
1546 close $msg or croak $!;
1547
1548 return \%log_msg;
1549 }
1550
1551 sub set_svn_commit_env {
1552 if (defined $LC_ALL) {
1553 $ENV{LC_ALL} = $LC_ALL;
1554 } else {
1555 delete $ENV{LC_ALL};
1556 }
1557 }
1558
1559 sub svn_commit_tree {
1560 my ($last, $commit) = @_;
1561 my $commit_msg = "$GIT_SVN_DIR/.svn-commit.tmp.$$";
1562 my $log_msg = get_commit_message($commit, $commit_msg);
1563 my ($oneline) = ($log_msg->{msg} =~ /([^\n\r]+)/);
1564 print "Committing $commit: $oneline\n";
1565
1566 set_svn_commit_env();
1567 my @ci_output = safe_qx(qw(svn commit -F),$commit_msg);
1568 $ENV{LC_ALL} = 'C';
1569 unlink $commit_msg;
1570 my ($committed) = ($ci_output[$#ci_output] =~ /(\d+)/);
1571 if (!defined $committed) {
1572 my $out = join("\n",@ci_output);
1573 print STDERR "W: Trouble parsing \`svn commit' output:\n\n",
1574 $out, "\n\nAssuming English locale...";
1575 ($committed) = ($out =~ /^Committed revision \d+\./sm);
1576 defined $committed or die " FAILED!\n",
1577 "Commit output failed to parse committed revision!\n",
1578 print STDERR " OK\n";
1579 }
1580
1581 my @svn_up = qw(svn up);
1582 push @svn_up, '--ignore-externals' unless $_no_ignore_ext;
1583 if ($_optimize_commits && ($committed == ($last->{revision} + 1))) {
1584 push @svn_up, "-r$committed";
1585 sys(@svn_up);
1586 my $info = svn_info('.');
1587 my $date = $info->{'Last Changed Date'} or die "Missing date\n";
1588 if ($info->{'Last Changed Rev'} != $committed) {
1589 croak "$info->{'Last Changed Rev'} != $committed\n"
1590 }
1591 my ($Y,$m,$d,$H,$M,$S,$tz) = ($date =~
1592 /(\d{4})\-(\d\d)\-(\d\d)\s
1593 (\d\d)\:(\d\d)\:(\d\d)\s([\-\+]\d+)/x)
1594 or croak "Failed to parse date: $date\n";
1595 $log_msg->{date} = "$tz $Y-$m-$d $H:$M:$S";
1596 $log_msg->{author} = $info->{'Last Changed Author'};
1597 $log_msg->{revision} = $committed;
1598 $log_msg->{msg} .= "\n";
1599 $log_msg->{parents} = [ $last->{commit} ];
1600 $log_msg->{commit} = git_commit($log_msg, $commit);
1601 return $log_msg;
1602 }
1603 # resync immediately
1604 push @svn_up, "-r$last->{revision}";
1605 sys(@svn_up);
1606 return fetch("$committed=$commit");
1607 }
1608
1609 sub rev_list_raw {
1610 my (@args) = @_;
1611 my $pid = open my $fh, '-|';
1612 defined $pid or croak $!;
1613 if (!$pid) {
1614 exec(qw/git-rev-list --pretty=raw/, @args) or croak $!;
1615 }
1616 return { fh => $fh, t => { } };
1617 }
1618
1619 sub next_rev_list_entry {
1620 my $rl = shift;
1621 my $fh = $rl->{fh};
1622 my $x = $rl->{t};
1623 while (<$fh>) {
1624 if (/^commit ($sha1)$/o) {
1625 if ($x->{c}) {
1626 $rl->{t} = { c => $1 };
1627 return $x;
1628 } else {
1629 $x->{c} = $1;
1630 }
1631 } elsif (/^parent ($sha1)$/o) {
1632 $x->{p}->{$1} = 1;
1633 } elsif (s/^ //) {
1634 $x->{m} ||= '';
1635 $x->{m} .= $_;
1636 }
1637 }
1638 return ($x != $rl->{t}) ? $x : undef;
1639 }
1640
1641 # read the entire log into a temporary file (which is removed ASAP)
1642 # and store the file handle + parser state
1643 sub svn_log_raw {
1644 my (@log_args) = @_;
1645 my $log_fh = IO::File->new_tmpfile or croak $!;
1646 my $pid = fork;
1647 defined $pid or croak $!;
1648 if (!$pid) {
1649 open STDOUT, '>&', $log_fh or croak $!;
1650 exec (qw(svn log), @log_args) or croak $!
1651 }
1652 waitpid $pid, 0;
1653 croak $? if $?;
1654 seek $log_fh, 0, 0 or croak $!;
1655 return { state => 'sep', fh => $log_fh };
1656 }
1657
1658 sub next_log_entry {
1659 my $log = shift; # retval of svn_log_raw()
1660 my $ret = undef;
1661 my $fh = $log->{fh};
1662
1663 while (<$fh>) {
1664 chomp;
1665 if (/^\-{72}$/) {
1666 if ($log->{state} eq 'msg') {
1667 if ($ret->{lines}) {
1668 $ret->{msg} .= $_."\n";
1669 unless(--$ret->{lines}) {
1670 $log->{state} = 'sep';
1671 }
1672 } else {
1673 croak "Log parse error at: $_\n",
1674 $ret->{revision},
1675 "\n";
1676 }
1677 next;
1678 }
1679 if ($log->{state} ne 'sep') {
1680 croak "Log parse error at: $_\n",
1681 "state: $log->{state}\n",
1682 $ret->{revision},
1683 "\n";
1684 }
1685 $log->{state} = 'rev';
1686
1687 # if we have an empty log message, put something there:
1688 if ($ret) {
1689 $ret->{msg} ||= "\n";
1690 delete $ret->{lines};
1691 return $ret;
1692 }
1693 next;
1694 }
1695 if ($log->{state} eq 'rev' && s/^r(\d+)\s*\|\s*//) {
1696 my $rev = $1;
1697 my ($author, $date, $lines) = split(/\s*\|\s*/, $_, 3);
1698 ($lines) = ($lines =~ /(\d+)/);
1699 my ($Y,$m,$d,$H,$M,$S,$tz) = ($date =~
1700 /(\d{4})\-(\d\d)\-(\d\d)\s
1701 (\d\d)\:(\d\d)\:(\d\d)\s([\-\+]\d+)/x)
1702 or croak "Failed to parse date: $date\n";
1703 $ret = { revision => $rev,
1704 date => "$tz $Y-$m-$d $H:$M:$S",
1705 author => $author,
1706 lines => $lines,
1707 msg => '' };
1708 if (defined $_authors && ! defined $users{$author}) {
1709 die "Author: $author not defined in ",
1710 "$_authors file\n";
1711 }
1712 $log->{state} = 'msg_start';
1713 next;
1714 }
1715 # skip the first blank line of the message:
1716 if ($log->{state} eq 'msg_start' && /^$/) {
1717 $log->{state} = 'msg';
1718 } elsif ($log->{state} eq 'msg') {
1719 if ($ret->{lines}) {
1720 $ret->{msg} .= $_."\n";
1721 unless (--$ret->{lines}) {
1722 $log->{state} = 'sep';
1723 }
1724 } else {
1725 croak "Log parse error at: $_\n",
1726 $ret->{revision},"\n";
1727 }
1728 }
1729 }
1730 return $ret;
1731 }
1732
1733 sub svn_info {
1734 my $url = shift || $SVN_URL;
1735
1736 my $pid = open my $info_fh, '-|';
1737 defined $pid or croak $!;
1738
1739 if ($pid == 0) {
1740 exec(qw(svn info),$url) or croak $!;
1741 }
1742
1743 my $ret = {};
1744 # only single-lines seem to exist in svn info output
1745 while (<$info_fh>) {
1746 chomp $_;
1747 if (m#^([^:]+)\s*:\s*(\S.*)$#) {
1748 $ret->{$1} = $2;
1749 push @{$ret->{-order}}, $1;
1750 }
1751 }
1752 close $info_fh or croak $?;
1753 return $ret;
1754 }
1755
1756 sub sys { system(@_) == 0 or croak $? }
1757
1758 sub do_update_index {
1759 my ($z_cmd, $cmd, $no_text_base) = @_;
1760
1761 my $z = open my $p, '-|';
1762 defined $z or croak $!;
1763 unless ($z) { exec @$z_cmd or croak $! }
1764
1765 my $pid = open my $ui, '|-';
1766 defined $pid or croak $!;
1767 unless ($pid) {
1768 exec('git-update-index',"--$cmd",'-z','--stdin') or croak $!;
1769 }
1770 local $/ = "\0";
1771 while (my $x = <$p>) {
1772 chomp $x;
1773 if (!$no_text_base && lstat $x && ! -l _ &&
1774 svn_propget_base('svn:keywords', $x)) {
1775 my $mode = -x _ ? 0755 : 0644;
1776 my ($v,$d,$f) = File::Spec->splitpath($x);
1777 my $tb = File::Spec->catfile($d, '.svn', 'tmp',
1778 'text-base',"$f.svn-base");
1779 $tb =~ s#^/##;
1780 unless (-f $tb) {
1781 $tb = File::Spec->catfile($d, '.svn',
1782 'text-base',"$f.svn-base");
1783 $tb =~ s#^/##;
1784 }
1785 my @s = stat($x);
1786 unlink $x or croak $!;
1787 copy($tb, $x);
1788 chmod(($mode &~ umask), $x) or croak $!;
1789 utime $s[8], $s[9], $x;
1790 }
1791 print $ui $x,"\0";
1792 }
1793 close $ui or croak $?;
1794 }
1795
1796 sub index_changes {
1797 return if $_use_lib;
1798
1799 if (!-f "$GIT_SVN_DIR/info/exclude") {
1800 open my $fd, '>>', "$GIT_SVN_DIR/info/exclude" or croak $!;
1801 print $fd '.svn',"\n";
1802 close $fd or croak $!;
1803 }
1804 my $no_text_base = shift;
1805 do_update_index([qw/git-diff-files --name-only -z/],
1806 'remove',
1807 $no_text_base);
1808 do_update_index([qw/git-ls-files -z --others/,
1809 "--exclude-from=$GIT_SVN_DIR/info/exclude"],
1810 'add',
1811 $no_text_base);
1812 }
1813
1814 sub s_to_file {
1815 my ($str, $file, $mode) = @_;
1816 open my $fd,'>',$file or croak $!;
1817 print $fd $str,"\n" or croak $!;
1818 close $fd or croak $!;
1819 chmod ($mode &~ umask, $file) if (defined $mode);
1820 }
1821
1822 sub file_to_s {
1823 my $file = shift;
1824 open my $fd,'<',$file or croak "$!: file: $file\n";
1825 local $/;
1826 my $ret = <$fd>;
1827 close $fd or croak $!;
1828 $ret =~ s/\s*$//s;
1829 return $ret;
1830 }
1831
1832 sub assert_revision_unknown {
1833 my $r = shift;
1834 if (my $c = revdb_get($REVDB, $r)) {
1835 croak "$r = $c already exists! Why are we refetching it?";
1836 }
1837 }
1838
1839 sub trees_eq {
1840 my ($x, $y) = @_;
1841 my @x = safe_qx('git-cat-file','commit',$x);
1842 my @y = safe_qx('git-cat-file','commit',$y);
1843 if (($y[0] ne $x[0]) || $x[0] !~ /^tree $sha1\n$/
1844 || $y[0] !~ /^tree $sha1\n$/) {
1845 print STDERR "Trees not equal: $y[0] != $x[0]\n";
1846 return 0
1847 }
1848 return 1;
1849 }
1850
1851 sub git_commit {
1852 my ($log_msg, @parents) = @_;
1853 assert_revision_unknown($log_msg->{revision});
1854 map_tree_joins() if (@_branch_from && !%tree_map);
1855
1856 my (@tmp_parents, @exec_parents, %seen_parent);
1857 if (my $lparents = $log_msg->{parents}) {
1858 @tmp_parents = @$lparents
1859 }
1860 # commit parents can be conditionally bound to a particular
1861 # svn revision via: "svn_revno=commit_sha1", filter them out here:
1862 foreach my $p (@parents) {
1863 next unless defined $p;
1864 if ($p =~ /^(\d+)=($sha1_short)$/o) {
1865 if ($1 == $log_msg->{revision}) {
1866 push @tmp_parents, $2;
1867 }
1868 } else {
1869 push @tmp_parents, $p if $p =~ /$sha1_short/o;
1870 }
1871 }
1872 my $tree = $log_msg->{tree};
1873 if (!defined $tree) {
1874 my $index = set_index($GIT_SVN_INDEX);
1875 index_changes();
1876 chomp($tree = `git-write-tree`);
1877 croak $? if $?;
1878 restore_index($index);
1879 }
1880
1881 # just in case we clobber the existing ref, we still want that ref
1882 # as our parent:
1883 if (my $cur = eval { file_to_s("$GIT_DIR/refs/remotes/$GIT_SVN") }) {
1884 push @tmp_parents, $cur;
1885 }
1886
1887 if (exists $tree_map{$tree}) {
1888 foreach my $p (@{$tree_map{$tree}}) {
1889 my $skip;
1890 foreach (@tmp_parents) {
1891 # see if a common parent is found
1892 my $mb = eval {
1893 safe_qx('git-merge-base', $_, $p)
1894 };
1895 next if ($@ || $?);
1896 $skip = 1;
1897 last;
1898 }
1899 next if $skip;
1900 my ($url_p, $r_p, $uuid_p) = cmt_metadata($p);
1901 next if (($SVN_UUID eq $uuid_p) &&
1902 ($log_msg->{revision} > $r_p));
1903 next if (defined $url_p && defined $SVN_URL &&
1904 ($SVN_UUID eq $uuid_p) &&
1905 ($url_p eq $SVN_URL));
1906 push @tmp_parents, $p;
1907 }
1908 }
1909 foreach (@tmp_parents) {
1910 next if $seen_parent{$_};
1911 $seen_parent{$_} = 1;
1912 push @exec_parents, $_;
1913 # MAXPARENT is defined to 16 in commit-tree.c:
1914 last if @exec_parents > 16;
1915 }
1916
1917 set_commit_env($log_msg);
1918 my @exec = ('git-commit-tree', $tree);
1919 push @exec, '-p', $_ foreach @exec_parents;
1920 defined(my $pid = open3(my $msg_fh, my $out_fh, '>&STDERR', @exec))
1921 or croak $!;
1922 print $msg_fh $log_msg->{msg} or croak $!;
1923 unless ($_no_metadata) {
1924 print $msg_fh "\ngit-svn-id: $SVN_URL\@$log_msg->{revision}",
1925 " $SVN_UUID\n" or croak $!;
1926 }
1927 $msg_fh->flush == 0 or croak $!;
1928 close $msg_fh or croak $!;
1929 chomp(my $commit = do { local $/; <$out_fh> });
1930 close $out_fh or croak $!;
1931 waitpid $pid, 0;
1932 croak $? if $?;
1933 if ($commit !~ /^$sha1$/o) {
1934 die "Failed to commit, invalid sha1: $commit\n";
1935 }
1936 sys('git-update-ref',"refs/remotes/$GIT_SVN",$commit);
1937 revdb_set($REVDB, $log_msg->{revision}, $commit);
1938
1939 # this output is read via pipe, do not change:
1940 print "r$log_msg->{revision} = $commit\n";
1941 check_repack();
1942 return $commit;
1943 }
1944
1945 sub check_repack {
1946 if ($_repack && (--$_repack_nr == 0)) {
1947 $_repack_nr = $_repack;
1948 sys("git repack $_repack_flags");
1949 }
1950 }
1951
1952 sub set_commit_env {
1953 my ($log_msg) = @_;
1954 my $author = $log_msg->{author};
1955 if (!defined $author || length $author == 0) {
1956 $author = '(no author)';
1957 }
1958 my ($name,$email) = defined $users{$author} ? @{$users{$author}}
1959 : ($author,"$author\@$SVN_UUID");
1960 $ENV{GIT_AUTHOR_NAME} = $ENV{GIT_COMMITTER_NAME} = $name;
1961 $ENV{GIT_AUTHOR_EMAIL} = $ENV{GIT_COMMITTER_EMAIL} = $email;
1962 $ENV{GIT_AUTHOR_DATE} = $ENV{GIT_COMMITTER_DATE} = $log_msg->{date};
1963 }
1964
1965 sub apply_mod_line_blob {
1966 my $m = shift;
1967 if ($m->{mode_b} =~ /^120/) {
1968 blob_to_symlink($m->{sha1_b}, $m->{file_b});
1969 } else {
1970 blob_to_file($m->{sha1_b}, $m->{file_b});
1971 }
1972 }
1973
1974 sub blob_to_symlink {
1975 my ($blob, $link) = @_;
1976 defined $link or croak "\$link not defined!\n";
1977 croak "Not a sha1: $blob\n" unless $blob =~ /^$sha1$/o;
1978 if (-l $link || -f _) {
1979 unlink $link or croak $!;
1980 }
1981
1982 my $dest = `git-cat-file blob $blob`; # no newline, so no chomp
1983 symlink $dest, $link or croak $!;
1984 }
1985
1986 sub blob_to_file {
1987 my ($blob, $file) = @_;
1988 defined $file or croak "\$file not defined!\n";
1989 croak "Not a sha1: $blob\n" unless $blob =~ /^$sha1$/o;
1990 if (-l $file || -f _) {
1991 unlink $file or croak $!;
1992 }
1993
1994 open my $blob_fh, '>', $file or croak "$!: $file\n";
1995 my $pid = fork;
1996 defined $pid or croak $!;
1997
1998 if ($pid == 0) {
1999 open STDOUT, '>&', $blob_fh or croak $!;
2000 exec('git-cat-file','blob',$blob) or croak $!;
2001 }
2002 waitpid $pid, 0;
2003 croak $? if $?;
2004
2005 close $blob_fh or croak $!;
2006 }
2007
2008 sub safe_qx {
2009 my $pid = open my $child, '-|';
2010 defined $pid or croak $!;
2011 if ($pid == 0) {
2012 exec(@_) or croak $!;
2013 }
2014 my @ret = (<$child>);
2015 close $child or croak $?;
2016 die $? if $?; # just in case close didn't error out
2017 return wantarray ? @ret : join('',@ret);
2018 }
2019
2020 sub svn_compat_check {
2021 if ($_follow_parent) {
2022 print STDERR 'E: --follow-parent functionality is only ',
2023 "available when SVN libraries are used\n";
2024 exit 1;
2025 }
2026 my @co_help = safe_qx(qw(svn co -h));
2027 unless (grep /ignore-externals/,@co_help) {
2028 print STDERR "W: Installed svn version does not support ",
2029 "--ignore-externals\n";
2030 $_no_ignore_ext = 1;
2031 }
2032 if (grep /usage: checkout URL\[\@REV\]/,@co_help) {
2033 $_svn_co_url_revs = 1;
2034 }
2035 if (grep /\[TARGET\[\@REV\]\.\.\.\]/, `svn propget -h`) {
2036 $_svn_pg_peg_revs = 1;
2037 }
2038
2039 # I really, really hope nobody hits this...
2040 unless (grep /stop-on-copy/, (safe_qx(qw(svn log -h)))) {
2041 print STDERR <<'';
2042 W: The installed svn version does not support the --stop-on-copy flag in
2043 the log command.
2044 Lets hope the directory you're tracking is not a branch or tag
2045 and was never moved within the repository...
2046
2047 $_no_stop_copy = 1;
2048 }
2049 }
2050
2051 # *sigh*, new versions of svn won't honor -r<rev> without URL@<rev>,
2052 # (and they won't honor URL@<rev> without -r<rev>, too!)
2053 sub svn_cmd_checkout {
2054 my ($url, $rev, $dir) = @_;
2055 my @cmd = ('svn','co', "-r$rev");
2056 push @cmd, '--ignore-externals' unless $_no_ignore_ext;
2057 $url .= "\@$rev" if $_svn_co_url_revs;
2058 sys(@cmd, $url, $dir);
2059 }
2060
2061 sub check_upgrade_needed {
2062 if (!-r $REVDB) {
2063 -d $GIT_SVN_DIR or mkpath([$GIT_SVN_DIR]);
2064 open my $fh, '>>',$REVDB or croak $!;
2065 close $fh;
2066 }
2067 my $old = eval {
2068 my $pid = open my $child, '-|';
2069 defined $pid or croak $!;
2070 if ($pid == 0) {
2071 close STDERR;
2072 exec('git-rev-parse',"$GIT_SVN-HEAD") or croak $!;
2073 }
2074 my @ret = (<$child>);
2075 close $child or croak $?;
2076 die $? if $?; # just in case close didn't error out
2077 return wantarray ? @ret : join('',@ret);
2078 };
2079 return unless $old;
2080 my $head = eval { safe_qx('git-rev-parse',"refs/remotes/$GIT_SVN") };
2081 if ($@ || !$head) {
2082 print STDERR "Please run: $0 rebuild --upgrade\n";
2083 exit 1;
2084 }
2085 }
2086
2087 # fills %tree_map with a reverse mapping of trees to commits. Useful
2088 # for finding parents to commit on.
2089 sub map_tree_joins {
2090 my %seen;
2091 foreach my $br (@_branch_from) {
2092 my $pid = open my $pipe, '-|';
2093 defined $pid or croak $!;
2094 if ($pid == 0) {
2095 exec(qw(git-rev-list --topo-order --pretty=raw), $br)
2096 or croak $!;
2097 }
2098 while (<$pipe>) {
2099 if (/^commit ($sha1)$/o) {
2100 my $commit = $1;
2101
2102 # if we've seen a commit,
2103 # we've seen its parents
2104 last if $seen{$commit};
2105 my ($tree) = (<$pipe> =~ /^tree ($sha1)$/o);
2106 unless (defined $tree) {
2107 die "Failed to parse commit $commit\n";
2108 }
2109 push @{$tree_map{$tree}}, $commit;
2110 $seen{$commit} = 1;
2111 }
2112 }
2113 close $pipe; # we could be breaking the pipe early
2114 }
2115 }
2116
2117 sub load_all_refs {
2118 if (@_branch_from) {
2119 print STDERR '--branch|-b parameters are ignored when ',
2120 "--branch-all-refs|-B is passed\n";
2121 }
2122
2123 # don't worry about rev-list on non-commit objects/tags,
2124 # it shouldn't blow up if a ref is a blob or tree...
2125 chomp(@_branch_from = `git-rev-parse --symbolic --all`);
2126 }
2127
2128 # '<svn username> = real-name <email address>' mapping based on git-svnimport:
2129 sub load_authors {
2130 open my $authors, '<', $_authors or die "Can't open $_authors $!\n";
2131 while (<$authors>) {
2132 chomp;
2133 next unless /^(\S+?)\s*=\s*(.+?)\s*<(.+)>\s*$/;
2134 my ($user, $name, $email) = ($1, $2, $3);
2135 $users{$user} = [$name, $email];
2136 }
2137 close $authors or croak $!;
2138 }
2139
2140 sub rload_authors {
2141 open my $authors, '<', $_authors or die "Can't open $_authors $!\n";
2142 while (<$authors>) {
2143 chomp;
2144 next unless /^(\S+?)\s*=\s*(.+?)\s*<(.+)>\s*$/;
2145 my ($user, $name, $email) = ($1, $2, $3);
2146 $rusers{"$name <$email>"} = $user;
2147 }
2148 close $authors or croak $!;
2149 }
2150
2151 sub svn_propget_base {
2152 my ($p, $f) = @_;
2153 $f .= '@BASE' if $_svn_pg_peg_revs;
2154 return safe_qx(qw/svn propget/, $p, $f);
2155 }
2156
2157 sub git_svn_each {
2158 my $sub = shift;
2159 foreach (`git-rev-parse --symbolic --all`) {
2160 next unless s#^refs/remotes/##;
2161 chomp $_;
2162 next unless -f "$GIT_DIR/svn/$_/info/url";
2163 &$sub($_);
2164 }
2165 }
2166
2167 sub migrate_revdb {
2168 git_svn_each(sub {
2169 my $id = shift;
2170 defined(my $pid = fork) or croak $!;
2171 if (!$pid) {
2172 $GIT_SVN = $ENV{GIT_SVN_ID} = $id;
2173 init_vars();
2174 exit 0 if -r $REVDB;
2175 print "Upgrading svn => git mapping...\n";
2176 -d $GIT_SVN_DIR or mkpath([$GIT_SVN_DIR]);
2177 open my $fh, '>>',$REVDB or croak $!;
2178 close $fh;
2179 rebuild();
2180 print "Done upgrading. You may now delete the ",
2181 "deprecated $GIT_SVN_DIR/revs directory\n";
2182 exit 0;
2183 }
2184 waitpid $pid, 0;
2185 croak $? if $?;
2186 });
2187 }
2188
2189 sub migration_check {
2190 migrate_revdb() unless (-e $REVDB);
2191 return if (-d "$GIT_DIR/svn" || !-d $GIT_DIR);
2192 print "Upgrading repository...\n";
2193 unless (-d "$GIT_DIR/svn") {
2194 mkdir "$GIT_DIR/svn" or croak $!;
2195 }
2196 print "Data from a previous version of git-svn exists, but\n\t",
2197 "$GIT_SVN_DIR\n\t(required for this version ",
2198 "($VERSION) of git-svn) does not.\n";
2199
2200 foreach my $x (`git-rev-parse --symbolic --all`) {
2201 next unless $x =~ s#^refs/remotes/##;
2202 chomp $x;
2203 next unless -f "$GIT_DIR/$x/info/url";
2204 my $u = eval { file_to_s("$GIT_DIR/$x/info/url") };
2205 next unless $u;
2206 my $dn = dirname("$GIT_DIR/svn/$x");
2207 mkpath([$dn]) unless -d $dn;
2208 rename "$GIT_DIR/$x", "$GIT_DIR/svn/$x" or croak "$!: $x";
2209 }
2210 migrate_revdb() if (-d $GIT_SVN_DIR && !-w $REVDB);
2211 print "Done upgrading.\n";
2212 }
2213
2214 sub find_rev_before {
2215 my ($r, $id, $eq_ok) = @_;
2216 my $f = "$GIT_DIR/svn/$id/.rev_db";
2217 return (undef,undef) unless -r $f;
2218 --$r unless $eq_ok;
2219 while ($r > 0) {
2220 if (my $c = revdb_get($f, $r)) {
2221 return ($r, $c);
2222 }
2223 --$r;
2224 }
2225 return (undef, undef);
2226 }
2227
2228 sub init_vars {
2229 $GIT_SVN ||= $ENV{GIT_SVN_ID} || 'git-svn';
2230 $GIT_SVN_DIR = "$GIT_DIR/svn/$GIT_SVN";
2231 $REVDB = "$GIT_SVN_DIR/.rev_db";
2232 $GIT_SVN_INDEX = "$GIT_SVN_DIR/index";
2233 $SVN_URL = undef;
2234 $SVN_WC = "$GIT_SVN_DIR/tree";
2235 %tree_map = ();
2236 }
2237
2238 # convert GetOpt::Long specs for use by git-repo-config
2239 sub read_repo_config {
2240 return unless -d $GIT_DIR;
2241 my $opts = shift;
2242 foreach my $o (keys %$opts) {
2243 my $v = $opts->{$o};
2244 my ($key) = ($o =~ /^([a-z\-]+)/);
2245 $key =~ s/-//g;
2246 my $arg = 'git-repo-config';
2247 $arg .= ' --int' if ($o =~ /[:=]i$/);
2248 $arg .= ' --bool' if ($o !~ /[:=][sfi]$/);
2249 if (ref $v eq 'ARRAY') {
2250 chomp(my @tmp = `$arg --get-all svn.$key`);
2251 @$v = @tmp if @tmp;
2252 } else {
2253 chomp(my $tmp = `$arg --get svn.$key`);
2254 if ($tmp && !($arg =~ / --bool / && $tmp eq 'false')) {
2255 $$v = $tmp;
2256 }
2257 }
2258 }
2259 }
2260
2261 sub set_default_vals {
2262 if (defined $_repack) {
2263 $_repack = 1000 if ($_repack <= 0);
2264 $_repack_nr = $_repack;
2265 $_repack_flags ||= '-d';
2266 }
2267 }
2268
2269 sub read_grafts {
2270 my $gr_file = shift;
2271 my ($grafts, $comments) = ({}, {});
2272 if (open my $fh, '<', $gr_file) {
2273 my @tmp;
2274 while (<$fh>) {
2275 if (/^($sha1)\s+/) {
2276 my $c = $1;
2277 if (@tmp) {
2278 @{$comments->{$c}} = @tmp;
2279 @tmp = ();
2280 }
2281 foreach my $p (split /\s+/, $_) {
2282 $grafts->{$c}->{$p} = 1;
2283 }
2284 } else {
2285 push @tmp, $_;
2286 }
2287 }
2288 close $fh or croak $!;
2289 @{$comments->{'END'}} = @tmp if @tmp;
2290 }
2291 return ($grafts, $comments);
2292 }
2293
2294 sub write_grafts {
2295 my ($grafts, $comments, $gr_file) = @_;
2296
2297 open my $fh, '>', $gr_file or croak $!;
2298 foreach my $c (sort keys %$grafts) {
2299 if ($comments->{$c}) {
2300 print $fh $_ foreach @{$comments->{$c}};
2301 }
2302 my $p = $grafts->{$c};
2303 my %x; # real parents
2304 delete $p->{$c}; # commits are not self-reproducing...
2305 my $pid = open my $ch, '-|';
2306 defined $pid or croak $!;
2307 if (!$pid) {
2308 exec(qw/git-cat-file commit/, $c) or croak $!;
2309 }
2310 while (<$ch>) {
2311 if (/^parent ($sha1)/) {
2312 $x{$1} = $p->{$1} = 1;
2313 } else {
2314 last unless /^\S/;
2315 }
2316 }
2317 close $ch; # breaking the pipe
2318
2319 # if real parents are the only ones in the grafts, drop it
2320 next if join(' ',sort keys %$p) eq join(' ',sort keys %x);
2321
2322 my (@ip, @jp, $mb);
2323 my %del = %x;
2324 @ip = @jp = keys %$p;
2325 foreach my $i (@ip) {
2326 next if $del{$i} || $p->{$i} == 2;
2327 foreach my $j (@jp) {
2328 next if $i eq $j || $del{$j} || $p->{$j} == 2;
2329 $mb = eval { safe_qx('git-merge-base',$i,$j) };
2330 next unless $mb;
2331 chomp $mb;
2332 next if $x{$mb};
2333 if ($mb eq $j) {
2334 delete $p->{$i};
2335 $del{$i} = 1;
2336 } elsif ($mb eq $i) {
2337 delete $p->{$j};
2338 $del{$j} = 1;
2339 }
2340 }
2341 }
2342
2343 # if real parents are the only ones in the grafts, drop it
2344 next if join(' ',sort keys %$p) eq join(' ',sort keys %x);
2345
2346 print $fh $c, ' ', join(' ', sort keys %$p),"\n";
2347 }
2348 if ($comments->{'END'}) {
2349 print $fh $_ foreach @{$comments->{'END'}};
2350 }
2351 close $fh or croak $!;
2352 }
2353
2354 sub read_url_paths_all {
2355 my ($l_map, $pfx, $p) = @_;
2356 my @dir;
2357 foreach (<$p/*>) {
2358 if (-r "$_/info/url") {
2359 $pfx .= '/' if $pfx && $pfx !~ m!/$!;
2360 my $id = $pfx . basename $_;
2361 my $url = file_to_s("$_/info/url");
2362 my ($u, $p) = repo_path_split($url);
2363 $l_map->{$u}->{$p} = $id;
2364 } elsif (-d $_) {
2365 push @dir, $_;
2366 }
2367 }
2368 foreach (@dir) {
2369 my $x = $_;
2370 $x =~ s!^\Q$GIT_DIR\E/svn/!!o;
2371 read_url_paths_all($l_map, $x, $_);
2372 }
2373 }
2374
2375 # this one only gets ids that have been imported, not new ones
2376 sub read_url_paths {
2377 my $l_map = {};
2378 git_svn_each(sub { my $x = shift;
2379 my $url = file_to_s("$GIT_DIR/svn/$x/info/url");
2380 my ($u, $p) = repo_path_split($url);
2381 $l_map->{$u}->{$p} = $x;
2382 });
2383 return $l_map;
2384 }
2385
2386 sub extract_metadata {
2387 my $id = shift or return (undef, undef, undef);
2388 my ($url, $rev, $uuid) = ($id =~ /^git-svn-id:\s(\S+?)\@(\d+)
2389 \s([a-f\d\-]+)$/x);
2390 if (!$rev || !$uuid || !$url) {
2391 # some of the original repositories I made had
2392 # identifiers like this:
2393 ($rev, $uuid) = ($id =~/^git-svn-id:\s(\d+)\@([a-f\d\-]+)/);
2394 }
2395 return ($url, $rev, $uuid);
2396 }
2397
2398 sub cmt_metadata {
2399 return extract_metadata((grep(/^git-svn-id: /,
2400 safe_qx(qw/git-cat-file commit/, shift)))[-1]);
2401 }
2402
2403 sub get_commit_time {
2404 my $cmt = shift;
2405 defined(my $pid = open my $fh, '-|') or croak $!;
2406 if (!$pid) {
2407 exec qw/git-rev-list --pretty=raw -n1/, $cmt or croak $!;
2408 }
2409 while (<$fh>) {
2410 /^committer\s(?:.+) (\d+) ([\-\+]?\d+)$/ or next;
2411 my ($s, $tz) = ($1, $2);
2412 if ($tz =~ s/^\+//) {
2413 $s += tz_to_s_offset($tz);
2414 } elsif ($tz =~ s/^\-//) {
2415 $s -= tz_to_s_offset($tz);
2416 }
2417 close $fh;
2418 return $s;
2419 }
2420 die "Can't get commit time for commit: $cmt\n";
2421 }
2422
2423 sub tz_to_s_offset {
2424 my ($tz) = @_;
2425 $tz =~ s/(\d\d)$//;
2426 return ($1 * 60) + ($tz * 3600);
2427 }
2428
2429 sub setup_pager { # translated to Perl from pager.c
2430 return unless (-t *STDOUT);
2431 my $pager = $ENV{PAGER};
2432 if (!defined $pager) {
2433 $pager = 'less';
2434 } elsif (length $pager == 0 || $pager eq 'cat') {
2435 return;
2436 }
2437 pipe my $rfd, my $wfd or return;
2438 defined(my $pid = fork) or croak $!;
2439 if (!$pid) {
2440 open STDOUT, '>&', $wfd or croak $!;
2441 return;
2442 }
2443 open STDIN, '<&', $rfd or croak $!;
2444 $ENV{LESS} ||= '-S';
2445 exec $pager or croak "Can't run pager: $!\n";;
2446 }
2447
2448 sub get_author_info {
2449 my ($dest, $author, $t, $tz) = @_;
2450 $author =~ s/(?:^\s*|\s*$)//g;
2451 $dest->{a_raw} = $author;
2452 my $_a;
2453 if ($_authors) {
2454 $_a = $rusers{$author} || undef;
2455 }
2456 if (!$_a) {
2457 ($_a) = ($author =~ /<([^>]+)\@[^>]+>$/);
2458 }
2459 $dest->{t} = $t;
2460 $dest->{tz} = $tz;
2461 $dest->{a} = $_a;
2462 # Date::Parse isn't in the standard Perl distro :(
2463 if ($tz =~ s/^\+//) {
2464 $t += tz_to_s_offset($tz);
2465 } elsif ($tz =~ s/^\-//) {
2466 $t -= tz_to_s_offset($tz);
2467 }
2468 $dest->{t_utc} = $t;
2469 }
2470
2471 sub process_commit {
2472 my ($c, $r_min, $r_max, $defer) = @_;
2473 if (defined $r_min && defined $r_max) {
2474 if ($r_min == $c->{r} && $r_min == $r_max) {
2475 show_commit($c);
2476 return 0;
2477 }
2478 return 1 if $r_min == $r_max;
2479 if ($r_min < $r_max) {
2480 # we need to reverse the print order
2481 return 0 if (defined $_limit && --$_limit < 0);
2482 push @$defer, $c;
2483 return 1;
2484 }
2485 if ($r_min != $r_max) {
2486 return 1 if ($r_min < $c->{r});
2487 return 1 if ($r_max > $c->{r});
2488 }
2489 }
2490 return 0 if (defined $_limit && --$_limit < 0);
2491 show_commit($c);
2492 return 1;
2493 }
2494
2495 sub show_commit {
2496 my $c = shift;
2497 if ($_oneline) {
2498 my $x = "\n";
2499 if (my $l = $c->{l}) {
2500 while ($l->[0] =~ /^\s*$/) { shift @$l }
2501 $x = $l->[0];
2502 }
2503 $_l_fmt ||= 'A' . length($c->{r});
2504 print 'r',pack($_l_fmt, $c->{r}),' | ';
2505 print "$c->{c} | " if $_show_commit;
2506 print $x;
2507 } else {
2508 show_commit_normal($c);
2509 }
2510 }
2511
2512 sub show_commit_normal {
2513 my ($c) = @_;
2514 print '-' x72, "\nr$c->{r} | ";
2515 print "$c->{c} | " if $_show_commit;
2516 print "$c->{a} | ", strftime("%Y-%m-%d %H:%M:%S %z (%a, %d %b %Y)",
2517 localtime($c->{t_utc})), ' | ';
2518 my $nr_line = 0;
2519
2520 if (my $l = $c->{l}) {
2521 while ($l->[$#$l] eq "\n" && $l->[($#$l - 1)] eq "\n") {
2522 pop @$l;
2523 }
2524 $nr_line = scalar @$l;
2525 if (!$nr_line) {
2526 print "1 line\n\n\n";
2527 } else {
2528 if ($nr_line == 1) {
2529 $nr_line = '1 line';
2530 } else {
2531 $nr_line .= ' lines';
2532 }
2533 print $nr_line, "\n\n";
2534 print $_ foreach @$l;
2535 }
2536 } else {
2537 print "1 line\n\n";
2538
2539 }
2540 foreach my $x (qw/raw diff/) {
2541 if ($c->{$x}) {
2542 print "\n";
2543 print $_ foreach @{$c->{$x}}
2544 }
2545 }
2546 }
2547
2548 sub libsvn_load {
2549 return unless $_use_lib;
2550 $_use_lib = eval {
2551 require SVN::Core;
2552 if ($SVN::Core::VERSION lt '1.1.0') {
2553 die "Need SVN::Core 1.1.0 or better ",
2554 "(got $SVN::Core::VERSION) ",
2555 "Falling back to command-line svn\n";
2556 }
2557 require SVN::Ra;
2558 require SVN::Delta;
2559 push @SVN::Git::Editor::ISA, 'SVN::Delta::Editor';
2560 my $kill_stupid_warnings = $SVN::Node::none.$SVN::Node::file.
2561 $SVN::Node::dir.$SVN::Node::unknown.
2562 $SVN::Node::none.$SVN::Node::file.
2563 $SVN::Node::dir.$SVN::Node::unknown;
2564 1;
2565 };
2566 }
2567
2568 sub libsvn_connect {
2569 my ($url) = @_;
2570 my $auth = SVN::Core::auth_open([SVN::Client::get_simple_provider(),
2571 SVN::Client::get_ssl_server_trust_file_provider(),
2572 SVN::Client::get_username_provider()]);
2573 my $s = eval { SVN::Ra->new(url => $url, auth => $auth) };
2574 return $s;
2575 }
2576
2577 sub libsvn_get_file {
2578 my ($gui, $f, $rev) = @_;
2579 my $p = $f;
2580 if (length $SVN_PATH > 0) {
2581 return unless ($p =~ s#^\Q$SVN_PATH\E/##);
2582 }
2583
2584 my ($hash, $pid, $in, $out);
2585 my $pool = SVN::Pool->new;
2586 defined($pid = open3($in, $out, '>&STDERR',
2587 qw/git-hash-object -w --stdin/)) or croak $!;
2588 # redirect STDOUT for SVN 1.1.x compatibility
2589 open my $stdout, '>&', \*STDOUT or croak $!;
2590 open STDOUT, '>&', $in or croak $!;
2591 my ($r, $props) = $SVN->get_file($f, $rev, \*STDOUT, $pool);
2592 $in->flush == 0 or croak $!;
2593 open STDOUT, '>&', $stdout or croak $!;
2594 close $in or croak $!;
2595 close $stdout or croak $!;
2596 $pool->clear;
2597 chomp($hash = do { local $/; <$out> });
2598 close $out or croak $!;
2599 waitpid $pid, 0;
2600 $hash =~ /^$sha1$/o or die "not a sha1: $hash\n";
2601
2602 my $mode = exists $props->{'svn:executable'} ? '100755' : '100644';
2603 if (exists $props->{'svn:special'}) {
2604 $mode = '120000';
2605 my $link = `git-cat-file blob $hash`;
2606 $link =~ s/^link // or die "svn:special file with contents: <",
2607 $link, "> is not understood\n";
2608 defined($pid = open3($in, $out, '>&STDERR',
2609 qw/git-hash-object -w --stdin/)) or croak $!;
2610 print $in $link;
2611 $in->flush == 0 or croak $!;
2612 close $in or croak $!;
2613 chomp($hash = do { local $/; <$out> });
2614 close $out or croak $!;
2615 waitpid $pid, 0;
2616 $hash =~ /^$sha1$/o or die "not a sha1: $hash\n";
2617 }
2618 print $gui $mode,' ',$hash,"\t",$p,"\0" or croak $!;
2619 }
2620
2621 sub libsvn_log_entry {
2622 my ($rev, $author, $date, $msg, $parents) = @_;
2623 my ($Y,$m,$d,$H,$M,$S) = ($date =~ /^(\d{4})\-(\d\d)\-(\d\d)T
2624 (\d\d)\:(\d\d)\:(\d\d).\d+Z$/x)
2625 or die "Unable to parse date: $date\n";
2626 if (defined $_authors && ! defined $users{$author}) {
2627 die "Author: $author not defined in $_authors file\n";
2628 }
2629 $msg = '' if ($rev == 0 && !defined $msg);
2630 return { revision => $rev, date => "+0000 $Y-$m-$d $H:$M:$S",
2631 author => $author, msg => $msg."\n", parents => $parents || [] }
2632 }
2633
2634 sub process_rm {
2635 my ($gui, $last_commit, $f) = @_;
2636 $f =~ s#^\Q$SVN_PATH\E/?## or return;
2637 # remove entire directories.
2638 if (safe_qx('git-ls-tree',$last_commit,'--',$f) =~ /^040000 tree/) {
2639 defined(my $pid = open my $ls, '-|') or croak $!;
2640 if (!$pid) {
2641 exec(qw/git-ls-tree -r --name-only -z/,
2642 $last_commit,'--',$f) or croak $!;
2643 }
2644 local $/ = "\0";
2645 while (<$ls>) {
2646 print $gui '0 ',0 x 40,"\t",$_ or croak $!;
2647 }
2648 close $ls or croak $?;
2649 } else {
2650 print $gui '0 ',0 x 40,"\t",$f,"\0" or croak $!;
2651 }
2652 }
2653
2654 sub libsvn_fetch {
2655 my ($last_commit, $paths, $rev, $author, $date, $msg) = @_;
2656 open my $gui, '| git-update-index -z --index-info' or croak $!;
2657 my @amr;
2658 foreach my $f (keys %$paths) {
2659 my $m = $paths->{$f}->action();
2660 $f =~ s#^/+##;
2661 if ($m =~ /^[DR]$/) {
2662 print "\t$m\t$f\n" unless $_q;
2663 process_rm($gui, $last_commit, $f);
2664 next if $m eq 'D';
2665 # 'R' can be file replacements, too, right?
2666 }
2667 my $pool = SVN::Pool->new;
2668 my $t = $SVN->check_path($f, $rev, $pool);
2669 if ($t == $SVN::Node::file) {
2670 if ($m =~ /^[AMR]$/) {
2671 push @amr, [ $m, $f ];
2672 } else {
2673 die "Unrecognized action: $m, ($f r$rev)\n";
2674 }
2675 } elsif ($t == $SVN::Node::dir && $m =~ /^[AR]$/) {
2676 my @traversed = ();
2677 libsvn_traverse($gui, '', $f, $rev, \@traversed);
2678 foreach (@traversed) {
2679 push @amr, [ $m, $_ ]
2680 }
2681 }
2682 $pool->clear;
2683 }
2684 foreach (@amr) {
2685 print "\t$_->[0]\t$_->[1]\n" unless $_q;
2686 libsvn_get_file($gui, $_->[1], $rev)
2687 }
2688 close $gui or croak $?;
2689 return libsvn_log_entry($rev, $author, $date, $msg, [$last_commit]);
2690 }
2691
2692 sub svn_grab_base_rev {
2693 defined(my $pid = open my $fh, '-|') or croak $!;
2694 if (!$pid) {
2695 open my $null, '>', '/dev/null' or croak $!;
2696 open STDERR, '>&', $null or croak $!;
2697 exec qw/git-rev-parse --verify/,"refs/remotes/$GIT_SVN^0"
2698 or croak $!;
2699 }
2700 chomp(my $c = do { local $/; <$fh> });
2701 close $fh;
2702 if (defined $c && length $c) {
2703 my ($url, $rev, $uuid) = cmt_metadata($c);
2704 return ($rev, $c) if defined $rev;
2705 }
2706 if ($_no_metadata) {
2707 my $offset = -41; # from tail
2708 my $rl;
2709 open my $fh, '<', $REVDB or
2710 die "--no-metadata specified and $REVDB not readable\n";
2711 seek $fh, $offset, 2;
2712 $rl = readline $fh;
2713 defined $rl or return (undef, undef);
2714 chomp $rl;
2715 while ($c ne $rl && tell $fh != 0) {
2716 $offset -= 41;
2717 seek $fh, $offset, 2;
2718 $rl = readline $fh;
2719 defined $rl or return (undef, undef);
2720 chomp $rl;
2721 }
2722 my $rev = tell $fh;
2723 croak $! if ($rev < -1);
2724 $rev = ($rev - 41) / 41;
2725 close $fh or croak $!;
2726 return ($rev, $c);
2727 }
2728 return (undef, undef);
2729 }
2730
2731 sub libsvn_parse_revision {
2732 my $base = shift;
2733 my $head = $SVN->get_latest_revnum();
2734 if (!defined $_revision || $_revision eq 'BASE:HEAD') {
2735 return ($base + 1, $head) if (defined $base);
2736 return (0, $head);
2737 }
2738 return ($1, $2) if ($_revision =~ /^(\d+):(\d+)$/);
2739 return ($_revision, $_revision) if ($_revision =~ /^\d+$/);
2740 if ($_revision =~ /^BASE:(\d+)$/) {
2741 return ($base + 1, $1) if (defined $base);
2742 return (0, $head);
2743 }
2744 return ($1, $head) if ($_revision =~ /^(\d+):HEAD$/);
2745 die "revision argument: $_revision not understood by git-svn\n",
2746 "Try using the command-line svn client instead\n";
2747 }
2748
2749 sub libsvn_traverse {
2750 my ($gui, $pfx, $path, $rev, $files) = @_;
2751 my $cwd = "$pfx/$path";
2752 my $pool = SVN::Pool->new;
2753 $cwd =~ s#^/+##g;
2754 my ($dirent, $r, $props) = $SVN->get_dir($cwd, $rev, $pool);
2755 foreach my $d (keys %$dirent) {
2756 my $t = $dirent->{$d}->kind;
2757 if ($t == $SVN::Node::dir) {
2758 libsvn_traverse($gui, $cwd, $d, $rev, $files);
2759 } elsif ($t == $SVN::Node::file) {
2760 my $file = "$cwd/$d";
2761 if (defined $files) {
2762 push @$files, $file;
2763 } else {
2764 print "\tA\t$file\n" unless $_q;
2765 libsvn_get_file($gui, $file, $rev);
2766 }
2767 }
2768 }
2769 $pool->clear;
2770 }
2771
2772 sub libsvn_traverse_ignore {
2773 my ($fh, $path, $r) = @_;
2774 $path =~ s#^/+##g;
2775 my $pool = SVN::Pool->new;
2776 my ($dirent, undef, $props) = $SVN->get_dir($path, $r, $pool);
2777 my $p = $path;
2778 $p =~ s#^\Q$SVN_PATH\E/?##;
2779 print $fh length $p ? "\n# $p\n" : "\n# /\n";
2780 if (my $s = $props->{'svn:ignore'}) {
2781 $s =~ s/[\r\n]+/\n/g;
2782 chomp $s;
2783 if (length $p == 0) {
2784 $s =~ s#\n#\n/$p#g;
2785 print $fh "/$s\n";
2786 } else {
2787 $s =~ s#\n#\n/$p/#g;
2788 print $fh "/$p/$s\n";
2789 }
2790 }
2791 foreach (sort keys %$dirent) {
2792 next if $dirent->{$_}->kind != $SVN::Node::dir;
2793 libsvn_traverse_ignore($fh, "$path/$_", $r);
2794 }
2795 $pool->clear;
2796 }
2797
2798 sub revisions_eq {
2799 my ($path, $r0, $r1) = @_;
2800 return 1 if $r0 == $r1;
2801 my $nr = 0;
2802 if ($_use_lib) {
2803 # should be OK to use Pool here (r1 - r0) should be small
2804 my $pool = SVN::Pool->new;
2805 libsvn_get_log($SVN, "/$path", $r0, $r1,
2806 0, 1, 1, sub {$nr++}, $pool);
2807 $pool->clear;
2808 } else {
2809 my ($url, undef) = repo_path_split($SVN_URL);
2810 my $svn_log = svn_log_raw("$url/$path","-r$r0:$r1");
2811 while (next_log_entry($svn_log)) { $nr++ }
2812 close $svn_log->{fh};
2813 }
2814 return 0 if ($nr > 1);
2815 return 1;
2816 }
2817
2818 sub libsvn_find_parent_branch {
2819 my ($paths, $rev, $author, $date, $msg) = @_;
2820 my $svn_path = '/'.$SVN_PATH;
2821
2822 # look for a parent from another branch:
2823 my $i = $paths->{$svn_path} or return;
2824 my $branch_from = $i->copyfrom_path or return;
2825 my $r = $i->copyfrom_rev;
2826 print STDERR "Found possible branch point: ",
2827 "$branch_from => $svn_path, $r\n";
2828 $branch_from =~ s#^/##;
2829 my $l_map = {};
2830 read_url_paths_all($l_map, '', "$GIT_DIR/svn");
2831 my $url = $SVN->{url};
2832 defined $l_map->{$url} or return;
2833 my $id = $l_map->{$url}->{$branch_from};
2834 if (!defined $id && $_follow_parent) {
2835 print STDERR "Following parent: $branch_from\@$r\n";
2836 # auto create a new branch and follow it
2837 $id = basename($branch_from);
2838 $id .= '@'.$r if -r "$GIT_DIR/svn/$id";
2839 while (-r "$GIT_DIR/svn/$id") {
2840 # just grow a tail if we're not unique enough :x
2841 $id .= '-';
2842 }
2843 }
2844 return unless defined $id;
2845
2846 my ($r0, $parent) = find_rev_before($r,$id,1);
2847 if ($_follow_parent && (!defined $r0 || !defined $parent)) {
2848 defined(my $pid = fork) or croak $!;
2849 if (!$pid) {
2850 $GIT_SVN = $ENV{GIT_SVN_ID} = $id;
2851 init_vars();
2852 $SVN_URL = "$url/$branch_from";
2853 $SVN_LOG = $SVN = undef;
2854 setup_git_svn();
2855 # we can't assume SVN_URL exists at r+1:
2856 $_revision = "0:$r";
2857 fetch_lib();
2858 exit 0;
2859 }
2860 waitpid $pid, 0;
2861 croak $? if $?;
2862 ($r0, $parent) = find_rev_before($r,$id,1);
2863 }
2864 return unless (defined $r0 && defined $parent);
2865 if (revisions_eq($branch_from, $r0, $r)) {
2866 unlink $GIT_SVN_INDEX;
2867 print STDERR "Found branch parent: ($GIT_SVN) $parent\n";
2868 sys(qw/git-read-tree/, $parent);
2869 return libsvn_fetch($parent, $paths, $rev,
2870 $author, $date, $msg);
2871 }
2872 print STDERR "Nope, branch point not imported or unknown\n";
2873 return undef;
2874 }
2875
2876 sub libsvn_get_log {
2877 my ($ra, @args) = @_;
2878 if ($SVN::Core::VERSION le '1.2.0') {
2879 splice(@args, 3, 1);
2880 }
2881 $ra->get_log(@args);
2882 }
2883
2884 sub libsvn_new_tree {
2885 if (my $log_entry = libsvn_find_parent_branch(@_)) {
2886 return $log_entry;
2887 }
2888 my ($paths, $rev, $author, $date, $msg) = @_;
2889 open my $gui, '| git-update-index -z --index-info' or croak $!;
2890 libsvn_traverse($gui, '', $SVN_PATH, $rev);
2891 close $gui or croak $?;
2892 return libsvn_log_entry($rev, $author, $date, $msg);
2893 }
2894
2895 sub find_graft_path_commit {
2896 my ($tree_paths, $p1, $r1) = @_;
2897 foreach my $x (keys %$tree_paths) {
2898 next unless ($p1 =~ /^\Q$x\E/);
2899 my $i = $tree_paths->{$x};
2900 my ($r0, $parent) = find_rev_before($r1,$i,1);
2901 return $parent if (defined $r0 && $r0 == $r1);
2902 print STDERR "r$r1 of $i not imported\n";
2903 next;
2904 }
2905 return undef;
2906 }
2907
2908 sub find_graft_path_parents {
2909 my ($grafts, $tree_paths, $c, $p0, $r0) = @_;
2910 foreach my $x (keys %$tree_paths) {
2911 next unless ($p0 =~ /^\Q$x\E/);
2912 my $i = $tree_paths->{$x};
2913 my ($r, $parent) = find_rev_before($r0, $i, 1);
2914 if (defined $r && defined $parent && revisions_eq($x,$r,$r0)) {
2915 my ($url_b, undef, $uuid_b) = cmt_metadata($c);
2916 my ($url_a, undef, $uuid_a) = cmt_metadata($parent);
2917 next if ($url_a && $url_b && $url_a eq $url_b &&
2918 $uuid_b eq $uuid_a);
2919 $grafts->{$c}->{$parent} = 1;
2920 }
2921 }
2922 }
2923
2924 sub libsvn_graft_file_copies {
2925 my ($grafts, $tree_paths, $path, $paths, $rev) = @_;
2926 foreach (keys %$paths) {
2927 my $i = $paths->{$_};
2928 my ($m, $p0, $r0) = ($i->action, $i->copyfrom_path,
2929 $i->copyfrom_rev);
2930 next unless (defined $p0 && defined $r0);
2931
2932 my $p1 = $_;
2933 $p1 =~ s#^/##;
2934 $p0 =~ s#^/##;
2935 my $c = find_graft_path_commit($tree_paths, $p1, $rev);
2936 next unless $c;
2937 find_graft_path_parents($grafts, $tree_paths, $c, $p0, $r0);
2938 }
2939 }
2940
2941 sub set_index {
2942 my $old = $ENV{GIT_INDEX_FILE};
2943 $ENV{GIT_INDEX_FILE} = shift;
2944 return $old;
2945 }
2946
2947 sub restore_index {
2948 my ($old) = @_;
2949 if (defined $old) {
2950 $ENV{GIT_INDEX_FILE} = $old;
2951 } else {
2952 delete $ENV{GIT_INDEX_FILE};
2953 }
2954 }
2955
2956 sub libsvn_commit_cb {
2957 my ($rev, $date, $committer, $c, $msg, $r_last, $cmt_last) = @_;
2958 if ($_optimize_commits && $rev == ($r_last + 1)) {
2959 my $log = libsvn_log_entry($rev,$committer,$date,$msg);
2960 $log->{tree} = get_tree_from_treeish($c);
2961 my $cmt = git_commit($log, $cmt_last, $c);
2962 my @diff = safe_qx('git-diff-tree', $cmt, $c);
2963 if (@diff) {
2964 print STDERR "Trees differ: $cmt $c\n",
2965 join('',@diff),"\n";
2966 exit 1;
2967 }
2968 } else {
2969 fetch("$rev=$c");
2970 }
2971 }
2972
2973 sub libsvn_ls_fullurl {
2974 my $fullurl = shift;
2975 my ($repo, $path) = repo_path_split($fullurl);
2976 $SVN ||= libsvn_connect($repo);
2977 my @ret;
2978 my $pool = SVN::Pool->new;
2979 my ($dirent, undef, undef) = $SVN->get_dir($path,
2980 $SVN->get_latest_revnum, $pool);
2981 foreach my $d (keys %$dirent) {
2982 if ($dirent->{$d}->kind == $SVN::Node::dir) {
2983 push @ret, "$d/"; # add '/' for compat with cli svn
2984 }
2985 }
2986 $pool->clear;
2987 return @ret;
2988 }
2989
2990
2991 sub libsvn_skip_unknown_revs {
2992 my $err = shift;
2993 my $errno = $err->apr_err();
2994 # Maybe the branch we're tracking didn't
2995 # exist when the repo started, so it's
2996 # not an error if it doesn't, just continue
2997 #
2998 # Wonderfully consistent library, eh?
2999 # 160013 - svn:// and file://
3000 # 175002 - http(s)://
3001 # More codes may be discovered later...
3002 if ($errno == 175002 || $errno == 160013) {
3003 return;
3004 }
3005 croak "Error from SVN, ($errno): ", $err->expanded_message,"\n";
3006 };
3007
3008 # Tie::File seems to be prone to offset errors if revisions get sparse,
3009 # it's not that fast, either. Tie::File is also not in Perl 5.6. So
3010 # one of my favorite modules is out :< Next up would be one of the DBM
3011 # modules, but I'm not sure which is most portable... So I'll just
3012 # go with something that's plain-text, but still capable of
3013 # being randomly accessed. So here's my ultra-simple fixed-width
3014 # database. All records are 40 characters + "\n", so it's easy to seek
3015 # to a revision: (41 * rev) is the byte offset.
3016 # A record of 40 0s denotes an empty revision.
3017 # And yes, it's still pretty fast (faster than Tie::File).
3018 sub revdb_set {
3019 my ($file, $rev, $commit) = @_;
3020 length $commit == 40 or croak "arg3 must be a full SHA1 hexsum\n";
3021 open my $fh, '+<', $file or croak $!;
3022 my $offset = $rev * 41;
3023 # assume that append is the common case:
3024 seek $fh, 0, 2 or croak $!;
3025 my $pos = tell $fh;
3026 if ($pos < $offset) {
3027 print $fh (('0' x 40),"\n") x (($offset - $pos) / 41);
3028 }
3029 seek $fh, $offset, 0 or croak $!;
3030 print $fh $commit,"\n";
3031 close $fh or croak $!;
3032 }
3033
3034 sub revdb_get {
3035 my ($file, $rev) = @_;
3036 my $ret;
3037 my $offset = $rev * 41;
3038 open my $fh, '<', $file or croak $!;
3039 seek $fh, $offset, 0;
3040 if (tell $fh == $offset) {
3041 $ret = readline $fh;
3042 if (defined $ret) {
3043 chomp $ret;
3044 $ret = undef if ($ret =~ /^0{40}$/);
3045 }
3046 }
3047 close $fh or croak $!;
3048 return $ret;
3049 }
3050
3051 sub copy_remote_ref {
3052 my $origin = $_cp_remote ? $_cp_remote : 'origin';
3053 my $ref = "refs/remotes/$GIT_SVN";
3054 if (safe_qx('git-ls-remote', $origin, $ref)) {
3055 sys(qw/git fetch/, $origin, "$ref:$ref");
3056 } else {
3057 die "Unable to find remote reference: ",
3058 "refs/remotes/$GIT_SVN on $origin\n";
3059 }
3060 }
3061
3062 package SVN::Git::Editor;
3063 use vars qw/@ISA/;
3064 use strict;
3065 use warnings;
3066 use Carp qw/croak/;
3067 use IO::File;
3068
3069 sub new {
3070 my $class = shift;
3071 my $git_svn = shift;
3072 my $self = SVN::Delta::Editor->new(@_);
3073 bless $self, $class;
3074 foreach (qw/svn_path c r ra /) {
3075 die "$_ required!\n" unless (defined $git_svn->{$_});
3076 $self->{$_} = $git_svn->{$_};
3077 }
3078 $self->{pool} = SVN::Pool->new;
3079 $self->{bat} = { '' => $self->open_root($self->{r}, $self->{pool}) };
3080 $self->{rm} = { };
3081 require Digest::MD5;
3082 return $self;
3083 }
3084
3085 sub split_path {
3086 return ($_[0] =~ m#^(.*?)/?([^/]+)$#);
3087 }
3088
3089 sub repo_path {
3090 (defined $_[1] && length $_[1]) ? "$_[0]->{svn_path}/$_[1]"
3091 : $_[0]->{svn_path}
3092 }
3093
3094 sub url_path {
3095 my ($self, $path) = @_;
3096 $self->{ra}->{url} . '/' . $self->repo_path($path);
3097 }
3098
3099 sub rmdirs {
3100 my ($self, $q) = @_;
3101 my $rm = $self->{rm};
3102 delete $rm->{''}; # we never delete the url we're tracking
3103 return unless %$rm;
3104
3105 foreach (keys %$rm) {
3106 my @d = split m#/#, $_;
3107 my $c = shift @d;
3108 $rm->{$c} = 1;
3109 while (@d) {
3110 $c .= '/' . shift @d;
3111 $rm->{$c} = 1;
3112 }
3113 }
3114 delete $rm->{$self->{svn_path}};
3115 delete $rm->{''}; # we never delete the url we're tracking
3116 return unless %$rm;
3117
3118 defined(my $pid = open my $fh,'-|') or croak $!;
3119 if (!$pid) {
3120 exec qw/git-ls-tree --name-only -r -z/, $self->{c} or croak $!;
3121 }
3122 local $/ = "\0";
3123 my @svn_path = split m#/#, $self->{svn_path};
3124 while (<$fh>) {
3125 chomp;
3126 my @dn = (@svn_path, (split m#/#, $_));
3127 while (pop @dn) {
3128 delete $rm->{join '/', @dn};
3129 }
3130 unless (%$rm) {
3131 close $fh;
3132 return;
3133 }
3134 }
3135 close $fh;
3136
3137 my ($r, $p, $bat) = ($self->{r}, $self->{pool}, $self->{bat});
3138 foreach my $d (sort { $b =~ tr#/#/# <=> $a =~ tr#/#/# } keys %$rm) {
3139 $self->close_directory($bat->{$d}, $p);
3140 my ($dn) = ($d =~ m#^(.*?)/?(?:[^/]+)$#);
3141 print "\tD+\t/$d/\n" unless $q;
3142 $self->SUPER::delete_entry($d, $r, $bat->{$dn}, $p);
3143 delete $bat->{$d};
3144 }
3145 }
3146
3147 sub open_or_add_dir {
3148 my ($self, $full_path, $baton) = @_;
3149 my $p = SVN::Pool->new;
3150 my $t = $self->{ra}->check_path($full_path, $self->{r}, $p);
3151 $p->clear;
3152 if ($t == $SVN::Node::none) {
3153 return $self->add_directory($full_path, $baton,
3154 undef, -1, $self->{pool});
3155 } elsif ($t == $SVN::Node::dir) {
3156 return $self->open_directory($full_path, $baton,
3157 $self->{r}, $self->{pool});
3158 }
3159 print STDERR "$full_path already exists in repository at ",
3160 "r$self->{r} and it is not a directory (",
3161 ($t == $SVN::Node::file ? 'file' : 'unknown'),"/$t)\n";
3162 exit 1;
3163 }
3164
3165 sub ensure_path {
3166 my ($self, $path) = @_;
3167 my $bat = $self->{bat};
3168 $path = $self->repo_path($path);
3169 return $bat->{''} unless (length $path);
3170 my @p = split m#/+#, $path;
3171 my $c = shift @p;
3172 $bat->{$c} ||= $self->open_or_add_dir($c, $bat->{''});
3173 while (@p) {
3174 my $c0 = $c;
3175 $c .= '/' . shift @p;
3176 $bat->{$c} ||= $self->open_or_add_dir($c, $bat->{$c0});
3177 }
3178 return $bat->{$c};
3179 }
3180
3181 sub A {
3182 my ($self, $m, $q) = @_;
3183 my ($dir, $file) = split_path($m->{file_b});
3184 my $pbat = $self->ensure_path($dir);
3185 my $fbat = $self->add_file($self->repo_path($m->{file_b}), $pbat,
3186 undef, -1);
3187 print "\tA\t$m->{file_b}\n" unless $q;
3188 $self->chg_file($fbat, $m);
3189 $self->close_file($fbat,undef,$self->{pool});
3190 }
3191
3192 sub C {
3193 my ($self, $m, $q) = @_;
3194 my ($dir, $file) = split_path($m->{file_b});
3195 my $pbat = $self->ensure_path($dir);
3196 my $fbat = $self->add_file($self->repo_path($m->{file_b}), $pbat,
3197 $self->url_path($m->{file_a}), $self->{r});
3198 print "\tC\t$m->{file_a} => $m->{file_b}\n" unless $q;
3199 $self->chg_file($fbat, $m);
3200 $self->close_file($fbat,undef,$self->{pool});
3201 }
3202
3203 sub delete_entry {
3204 my ($self, $path, $pbat) = @_;
3205 my $rpath = $self->repo_path($path);
3206 my ($dir, $file) = split_path($rpath);
3207 $self->{rm}->{$dir} = 1;
3208 $self->SUPER::delete_entry($rpath, $self->{r}, $pbat, $self->{pool});
3209 }
3210
3211 sub R {
3212 my ($self, $m, $q) = @_;
3213 my ($dir, $file) = split_path($m->{file_b});
3214 my $pbat = $self->ensure_path($dir);
3215 my $fbat = $self->add_file($self->repo_path($m->{file_b}), $pbat,
3216 $self->url_path($m->{file_a}), $self->{r});
3217 print "\tR\t$m->{file_a} => $m->{file_b}\n" unless $q;
3218 $self->chg_file($fbat, $m);
3219 $self->close_file($fbat,undef,$self->{pool});
3220
3221 ($dir, $file) = split_path($m->{file_a});
3222 $pbat = $self->ensure_path($dir);
3223 $self->delete_entry($m->{file_a}, $pbat);
3224 }
3225
3226 sub M {
3227 my ($self, $m, $q) = @_;
3228 my ($dir, $file) = split_path($m->{file_b});
3229 my $pbat = $self->ensure_path($dir);
3230 my $fbat = $self->open_file($self->repo_path($m->{file_b}),
3231 $pbat,$self->{r},$self->{pool});
3232 print "\t$m->{chg}\t$m->{file_b}\n" unless $q;
3233 $self->chg_file($fbat, $m);
3234 $self->close_file($fbat,undef,$self->{pool});
3235 }
3236
3237 sub T { shift->M(@_) }
3238
3239 sub change_file_prop {
3240 my ($self, $fbat, $pname, $pval) = @_;
3241 $self->SUPER::change_file_prop($fbat, $pname, $pval, $self->{pool});
3242 }
3243
3244 sub chg_file {
3245 my ($self, $fbat, $m) = @_;
3246 if ($m->{mode_b} =~ /755$/ && $m->{mode_a} !~ /755$/) {
3247 $self->change_file_prop($fbat,'svn:executable','*');
3248 } elsif ($m->{mode_b} !~ /755$/ && $m->{mode_a} =~ /755$/) {
3249 $self->change_file_prop($fbat,'svn:executable',undef);
3250 }
3251 my $fh = IO::File->new_tmpfile or croak $!;
3252 if ($m->{mode_b} =~ /^120/) {
3253 print $fh 'link ' or croak $!;
3254 $self->change_file_prop($fbat,'svn:special','*');
3255 } elsif ($m->{mode_a} =~ /^120/ && $m->{mode_b} !~ /^120/) {
3256 $self->change_file_prop($fbat,'svn:special',undef);
3257 }
3258 defined(my $pid = fork) or croak $!;
3259 if (!$pid) {
3260 open STDOUT, '>&', $fh or croak $!;
3261 exec qw/git-cat-file blob/, $m->{sha1_b} or croak $!;
3262 }
3263 waitpid $pid, 0;
3264 croak $? if $?;
3265 $fh->flush == 0 or croak $!;
3266 seek $fh, 0, 0 or croak $!;
3267
3268 my $md5 = Digest::MD5->new;
3269 $md5->addfile($fh) or croak $!;
3270 seek $fh, 0, 0 or croak $!;
3271
3272 my $exp = $md5->hexdigest;
3273 my $atd = $self->apply_textdelta($fbat, undef, $self->{pool});
3274 my $got = SVN::TxDelta::send_stream($fh, @$atd, $self->{pool});
3275 die "Checksum mismatch\nexpected: $exp\ngot: $got\n" if ($got ne $exp);
3276
3277 close $fh or croak $!;
3278 }
3279
3280 sub D {
3281 my ($self, $m, $q) = @_;
3282 my ($dir, $file) = split_path($m->{file_b});
3283 my $pbat = $self->ensure_path($dir);
3284 print "\tD\t$m->{file_b}\n" unless $q;
3285 $self->delete_entry($m->{file_b}, $pbat);
3286 }
3287
3288 sub close_edit {
3289 my ($self) = @_;
3290 my ($p,$bat) = ($self->{pool}, $self->{bat});
3291 foreach (sort { $b =~ tr#/#/# <=> $a =~ tr#/#/# } keys %$bat) {
3292 $self->close_directory($bat->{$_}, $p);
3293 }
3294 $self->SUPER::close_edit($p);
3295 $p->clear;
3296 }
3297
3298 sub abort_edit {
3299 my ($self) = @_;
3300 $self->SUPER::abort_edit($self->{pool});
3301 $self->{pool}->clear;
3302 }
3303
3304 __END__
3305
3306 Data structures:
3307
3308 $svn_log hashref (as returned by svn_log_raw)
3309 {
3310 fh => file handle of the log file,
3311 state => state of the log file parser (sep/msg/rev/msg_start...)
3312 }
3313
3314 $log_msg hashref as returned by next_log_entry($svn_log)
3315 {
3316 msg => 'whitespace-formatted log entry
3317 ', # trailing newline is preserved
3318 revision => '8', # integer
3319 date => '2004-02-24T17:01:44.108345Z', # commit date
3320 author => 'committer name'
3321 };
3322
3323
3324 @mods = array of diff-index line hashes, each element represents one line
3325 of diff-index output
3326
3327 diff-index line ($m hash)
3328 {
3329 mode_a => first column of diff-index output, no leading ':',
3330 mode_b => second column of diff-index output,
3331 sha1_b => sha1sum of the final blob,
3332 chg => change type [MCRADT],
3333 file_a => original file name of a file (iff chg is 'C' or 'R')
3334 file_b => new/current file name of a file (any chg)
3335 }
3336 ;
3337
3338 # retval of read_url_paths{,_all}();
3339 $l_map = {
3340 # repository root url
3341 'https://svn.musicpd.org' => {
3342 # repository path # GIT_SVN_ID
3343 'mpd/trunk' => 'trunk',
3344 'mpd/tags/0.11.5' => 'tags/0.11.5',
3345 },
3346 }
3347
3348 Notes:
3349 I don't trust the each() function on unless I created %hash myself
3350 because the internal iterator may not have started at base.
MinGW port of GIT