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[git/ericb.git] / git-svn.perl
blobd0bd0bdeb8462f7ad4550b5fe406f4e0a1a0ee1c
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 sub fatal (@) { print STDERR $@; exit 1 }
25 # If SVN:: library support is added, please make the dependencies
26 # optional and preserve the capability to use the command-line client.
27 # use eval { require SVN::... } to make it lazy load
28 # We don't use any modules not in the standard Perl distribution:
29 use Carp qw/croak/;
30 use IO::File qw//;
31 use File::Basename qw/dirname basename/;
32 use File::Path qw/mkpath/;
33 use Getopt::Long qw/:config gnu_getopt no_ignore_case auto_abbrev pass_through/;
34 use File::Spec qw//;
35 use File::Copy qw/copy/;
36 use POSIX qw/strftime/;
37 use IPC::Open3;
38 use Memoize;
39 memoize('revisions_eq');
40 memoize('cmt_metadata');
41 memoize('get_commit_time');
42
43 my ($SVN, $_use_lib);
44
45 sub nag_lib {
46 print STDERR <<EOF;
47 ! Please consider installing the SVN Perl libraries (version 1.1.0 or
48 ! newer). You will generally get better performance and fewer bugs,
49 ! especially if you:
50 ! 1) have a case-insensitive filesystem
51 ! 2) replace symlinks with files (and vice-versa) in commits
52
53 EOF
54 }
55
56 $_use_lib = 1 unless $ENV{GIT_SVN_NO_LIB};
57 libsvn_load();
58 nag_lib() unless $_use_lib;
59
60 my $_optimize_commits = 1 unless $ENV{GIT_SVN_NO_OPTIMIZE_COMMITS};
61 my $sha1 = qr/[a-f\d]{40}/;
62 my $sha1_short = qr/[a-f\d]{4,40}/;
63 my $_esc_color = qr/(?:\033\[(?:(?:\d+;)*\d*)?m)*/;
64 my ($_revision,$_stdin,$_no_ignore_ext,$_no_stop_copy,$_help,$_rmdir,$_edit,
65 $_find_copies_harder, $_l, $_cp_similarity, $_cp_remote,
66 $_repack, $_repack_nr, $_repack_flags, $_q,
67 $_message, $_file, $_follow_parent, $_no_metadata,
68 $_template, $_shared, $_no_default_regex, $_no_graft_copy,
69 $_limit, $_verbose, $_incremental, $_oneline, $_l_fmt, $_show_commit,
70 $_version, $_upgrade, $_authors, $_branch_all_refs, @_opt_m,
71 $_merge, $_strategy, $_dry_run, $_ignore_nodate, $_non_recursive,
72 $_username, $_config_dir, $_no_auth_cache, $_xfer_delta,
73 $_pager, $_color);
74 my (@_branch_from, %tree_map, %users, %rusers, %equiv);
75 my ($_svn_co_url_revs, $_svn_pg_peg_revs);
76 my @repo_path_split_cache;
77
78 my %fc_opts = ( 'no-ignore-externals' => \$_no_ignore_ext,
79 'branch|b=s' => \@_branch_from,
80 'follow-parent|follow' => \$_follow_parent,
81 'branch-all-refs|B' => \$_branch_all_refs,
82 'authors-file|A=s' => \$_authors,
83 'repack:i' => \$_repack,
84 'no-metadata' => \$_no_metadata,
85 'quiet|q' => \$_q,
86 'username=s' => \$_username,
87 'config-dir=s' => \$_config_dir,
88 'no-auth-cache' => \$_no_auth_cache,
89 'ignore-nodate' => \$_ignore_nodate,
90 'repack-flags|repack-args|repack-opts=s' => \$_repack_flags);
91
92 my ($_trunk, $_tags, $_branches);
93 my %multi_opts = ( 'trunk|T=s' => \$_trunk,
94 'tags|t=s' => \$_tags,
95 'branches|b=s' => \$_branches );
96 my %init_opts = ( 'template=s' => \$_template, 'shared' => \$_shared );
97 my %cmt_opts = ( 'edit|e' => \$_edit,
98 'rmdir' => \$_rmdir,
99 'find-copies-harder' => \$_find_copies_harder,
100 'l=i' => \$_l,
101 'copy-similarity|C=i'=> \$_cp_similarity
102 );
103
104 my %cmd = (
105 fetch => [ \&fetch, "Download new revisions from SVN",
106 { 'revision|r=s' => \$_revision, %fc_opts } ],
107 init => [ \&init, "Initialize a repo for tracking" .
108 " (requires URL argument)",
109 \%init_opts ],
110 commit => [ \&commit, "Commit git revisions to SVN",
111 { 'stdin|' => \$_stdin, %cmt_opts, %fc_opts, } ],
112 'show-ignore' => [ \&show_ignore, "Show svn:ignore listings",
113 { 'revision|r=i' => \$_revision } ],
114 rebuild => [ \&rebuild, "Rebuild git-svn metadata (after git clone)",
115 { 'no-ignore-externals' => \$_no_ignore_ext,
116 'copy-remote|remote=s' => \$_cp_remote,
117 'upgrade' => \$_upgrade } ],
118 'graft-branches' => [ \&graft_branches,
119 'Detect merges/branches from already imported history',
120 { 'merge-rx|m' => \@_opt_m,
121 'branch|b=s' => \@_branch_from,
122 'branch-all-refs|B' => \$_branch_all_refs,
123 'no-default-regex' => \$_no_default_regex,
124 'no-graft-copy' => \$_no_graft_copy } ],
125 'multi-init' => [ \&multi_init,
126 'Initialize multiple trees (like git-svnimport)',
127 { %multi_opts, %init_opts,
128 'revision|r=i' => \$_revision,
129 'username=s' => \$_username,
130 'config-dir=s' => \$_config_dir,
131 'no-auth-cache' => \$_no_auth_cache,
132 } ],
133 'multi-fetch' => [ \&multi_fetch,
134 'Fetch multiple trees (like git-svnimport)',
135 \%fc_opts ],
136 'log' => [ \&show_log, 'Show commit logs',
137 { 'limit=i' => \$_limit,
138 'revision|r=s' => \$_revision,
139 'verbose|v' => \$_verbose,
140 'incremental' => \$_incremental,
141 'oneline' => \$_oneline,
142 'show-commit' => \$_show_commit,
143 'non-recursive' => \$_non_recursive,
144 'authors-file|A=s' => \$_authors,
145 'color' => \$_color,
146 'pager=s' => \$_pager,
147 } ],
148 'commit-diff' => [ \&commit_diff, 'Commit a diff between two trees',
149 { 'message|m=s' => \$_message,
150 'file|F=s' => \$_file,
151 'revision|r=s' => \$_revision,
152 %cmt_opts } ],
153 dcommit => [ \&dcommit, 'Commit several diffs to merge with upstream',
154 { 'merge|m|M' => \$_merge,
155 'strategy|s=s' => \$_strategy,
156 'dry-run|n' => \$_dry_run,
157 %cmt_opts } ],
158 );
159
160 my $cmd;
161 for (my $i = 0; $i < @ARGV; $i++) {
162 if (defined $cmd{$ARGV[$i]}) {
163 $cmd = $ARGV[$i];
164 splice @ARGV, $i, 1;
165 last;
166 }
167 };
168
169 my %opts = %{$cmd{$cmd}->[2]} if (defined $cmd);
170
171 read_repo_config(\%opts);
172 my $rv = GetOptions(%opts, 'help|H|h' => \$_help,
173 'version|V' => \$_version,
174 'id|i=s' => \$GIT_SVN);
175 exit 1 if (!$rv && $cmd ne 'log');
176
177 set_default_vals();
178 usage(0) if $_help;
179 version() if $_version;
180 usage(1) unless defined $cmd;
181 init_vars();
182 load_authors() if $_authors;
183 load_all_refs() if $_branch_all_refs;
184 svn_compat_check() unless $_use_lib;
185 migration_check() unless $cmd =~ /^(?:init|rebuild|multi-init|commit-diff)$/;
186 $cmd{$cmd}->[0]->(@ARGV);
187 exit 0;
188
189 ####################### primary functions ######################
190 sub usage {
191 my $exit = shift || 0;
192 my $fd = $exit ? \*STDERR : \*STDOUT;
193 print $fd <<"";
194 git-svn - bidirectional operations between a single Subversion tree and git
195 Usage: $0 <command> [options] [arguments]\n
196
197 print $fd "Available commands:\n" unless $cmd;
198
199 foreach (sort keys %cmd) {
200 next if $cmd && $cmd ne $_;
201 print $fd ' ',pack('A17',$_),$cmd{$_}->[1],"\n";
202 foreach (keys %{$cmd{$_}->[2]}) {
203 # prints out arguments as they should be passed:
204 my $x = s#[:=]s$## ? '<arg>' : s#[:=]i$## ? '<num>' : '';
205 print $fd ' ' x 21, join(', ', map { length $_ > 1 ?
206 "--$_" : "-$_" }
207 split /\|/,$_)," $x\n";
208 }
209 }
210 print $fd <<"";
211 \nGIT_SVN_ID may be set in the environment or via the --id/-i switch to an
212 arbitrary identifier if you're tracking multiple SVN branches/repositories in
213 one git repository and want to keep them separate. See git-svn(1) for more
214 information.
215
216 exit $exit;
217 }
218
219 sub version {
220 print "git-svn version $VERSION\n";
221 exit 0;
222 }
223
224 sub rebuild {
225 if (quiet_run(qw/git-rev-parse --verify/,"refs/remotes/$GIT_SVN^0")) {
226 copy_remote_ref();
227 }
228 $SVN_URL = shift or undef;
229 my $newest_rev = 0;
230 if ($_upgrade) {
231 sys('git-update-ref',"refs/remotes/$GIT_SVN","$GIT_SVN-HEAD");
232 } else {
233 check_upgrade_needed();
234 }
235
236 my $pid = open(my $rev_list,'-|');
237 defined $pid or croak $!;
238 if ($pid == 0) {
239 exec("git-rev-list","refs/remotes/$GIT_SVN") or croak $!;
240 }
241 my $latest;
242 while (<$rev_list>) {
243 chomp;
244 my $c = $_;
245 croak "Non-SHA1: $c\n" unless $c =~ /^$sha1$/o;
246 my @commit = grep(/^git-svn-id: /,`git-cat-file commit $c`);
247 next if (!@commit); # skip merges
248 my ($url, $rev, $uuid) = extract_metadata($commit[$#commit]);
249 if (!defined $rev || !$uuid) {
250 croak "Unable to extract revision or UUID from ",
251 "$c, $commit[$#commit]\n";
252 }
253
254 # if we merged or otherwise started elsewhere, this is
255 # how we break out of it
256 next if (defined $SVN_UUID && ($uuid ne $SVN_UUID));
257 next if (defined $SVN_URL && defined $url && ($url ne $SVN_URL));
258
259 unless (defined $latest) {
260 if (!$SVN_URL && !$url) {
261 croak "SVN repository location required: $url\n";
262 }
263 $SVN_URL ||= $url;
264 $SVN_UUID ||= $uuid;
265 setup_git_svn();
266 $latest = $rev;
267 }
268 revdb_set($REVDB, $rev, $c);
269 print "r$rev = $c\n";
270 $newest_rev = $rev if ($rev > $newest_rev);
271 }
272 close $rev_list or croak $?;
273
274 goto out if $_use_lib;
275 if (!chdir $SVN_WC) {
276 svn_cmd_checkout($SVN_URL, $latest, $SVN_WC);
277 chdir $SVN_WC or croak $!;
278 }
279
280 $pid = fork;
281 defined $pid or croak $!;
282 if ($pid == 0) {
283 my @svn_up = qw(svn up);
284 push @svn_up, '--ignore-externals' unless $_no_ignore_ext;
285 sys(@svn_up,"-r$newest_rev");
286 $ENV{GIT_INDEX_FILE} = $GIT_SVN_INDEX;
287 index_changes();
288 exec('git-write-tree') or croak $!;
289 }
290 waitpid $pid, 0;
291 croak $? if $?;
292 out:
293 if ($_upgrade) {
294 print STDERR <<"";
295 Keeping deprecated refs/head/$GIT_SVN-HEAD for now. Please remove it
296 when you have upgraded your tools and habits to use refs/remotes/$GIT_SVN
297
298 }
299 }
300
301 sub init {
302 my $url = shift or die "SVN repository location required " .
303 "as a command-line argument\n";
304 $url =~ s!/+$!!; # strip trailing slash
305
306 if (my $repo_path = shift) {
307 unless (-d $repo_path) {
308 mkpath([$repo_path]);
309 }
310 $GIT_DIR = $ENV{GIT_DIR} = $repo_path . "/.git";
311 init_vars();
312 }
313
314 $SVN_URL = $url;
315 unless (-d $GIT_DIR) {
316 my @init_db = ('git-init-db');
317 push @init_db, "--template=$_template" if defined $_template;
318 push @init_db, "--shared" if defined $_shared;
319 sys(@init_db);
320 }
321 setup_git_svn();
322 }
323
324 sub fetch {
325 check_upgrade_needed();
326 $SVN_URL ||= file_to_s("$GIT_SVN_DIR/info/url");
327 my $ret = $_use_lib ? fetch_lib(@_) : fetch_cmd(@_);
328 if ($ret->{commit} && quiet_run(qw(git-rev-parse --verify
329 refs/heads/master^0))) {
330 sys(qw(git-update-ref refs/heads/master),$ret->{commit});
331 }
332 return $ret;
333 }
334
335 sub fetch_cmd {
336 my (@parents) = @_;
337 my @log_args = -d $SVN_WC ? ($SVN_WC) : ($SVN_URL);
338 unless ($_revision) {
339 $_revision = -d $SVN_WC ? 'BASE:HEAD' : '0:HEAD';
340 }
341 push @log_args, "-r$_revision";
342 push @log_args, '--stop-on-copy' unless $_no_stop_copy;
343
344 my $svn_log = svn_log_raw(@log_args);
345
346 my $base = next_log_entry($svn_log) or croak "No base revision!\n";
347 # don't need last_revision from grab_base_rev() because
348 # user could've specified a different revision to skip (they
349 # didn't want to import certain revisions into git for whatever
350 # reason, so trust $base->{revision} instead.
351 my (undef, $last_commit) = svn_grab_base_rev();
352 unless (-d $SVN_WC) {
353 svn_cmd_checkout($SVN_URL,$base->{revision},$SVN_WC);
354 chdir $SVN_WC or croak $!;
355 read_uuid();
356 $last_commit = git_commit($base, @parents);
357 assert_tree($last_commit);
358 } else {
359 chdir $SVN_WC or croak $!;
360 read_uuid();
361 # looks like a user manually cp'd and svn switch'ed
362 unless ($last_commit) {
363 sys(qw/svn revert -R ./);
364 assert_svn_wc_clean($base->{revision});
365 $last_commit = git_commit($base, @parents);
366 assert_tree($last_commit);
367 }
368 }
369 my @svn_up = qw(svn up);
370 push @svn_up, '--ignore-externals' unless $_no_ignore_ext;
371 my $last = $base;
372 while (my $log_msg = next_log_entry($svn_log)) {
373 if ($last->{revision} >= $log_msg->{revision}) {
374 croak "Out of order: last >= current: ",
375 "$last->{revision} >= $log_msg->{revision}\n";
376 }
377 # Revert is needed for cases like:
378 # https://svn.musicpd.org/Jamming/trunk (r166:167), but
379 # I can't seem to reproduce something like that on a test...
380 sys(qw/svn revert -R ./);
381 assert_svn_wc_clean($last->{revision});
382 sys(@svn_up,"-r$log_msg->{revision}");
383 $last_commit = git_commit($log_msg, $last_commit, @parents);
384 $last = $log_msg;
385 }
386 close $svn_log->{fh};
387 $last->{commit} = $last_commit;
388 return $last;
389 }
390
391 sub fetch_lib {
392 my (@parents) = @_;
393 $SVN_URL ||= file_to_s("$GIT_SVN_DIR/info/url");
394 $SVN ||= libsvn_connect($SVN_URL);
395 my ($last_rev, $last_commit) = svn_grab_base_rev();
396 my ($base, $head) = libsvn_parse_revision($last_rev);
397 if ($base > $head) {
398 return { revision => $last_rev, commit => $last_commit }
399 }
400 my $index = set_index($GIT_SVN_INDEX);
401
402 # limit ourselves and also fork() since get_log won't release memory
403 # after processing a revision and SVN stuff seems to leak
404 my $inc = 1000;
405 my ($min, $max) = ($base, $head < $base+$inc ? $head : $base+$inc);
406 read_uuid();
407 if (defined $last_commit) {
408 unless (-e $GIT_SVN_INDEX) {
409 sys(qw/git-read-tree/, $last_commit);
410 }
411 chomp (my $x = `git-write-tree`);
412 my ($y) = (`git-cat-file commit $last_commit`
413 =~ /^tree ($sha1)/m);
414 if ($y ne $x) {
415 unlink $GIT_SVN_INDEX or croak $!;
416 sys(qw/git-read-tree/, $last_commit);
417 }
418 chomp ($x = `git-write-tree`);
419 if ($y ne $x) {
420 print STDERR "trees ($last_commit) $y != $x\n",
421 "Something is seriously wrong...\n";
422 }
423 }
424 while (1) {
425 # fork, because using SVN::Pool with get_log() still doesn't
426 # seem to help enough to keep memory usage down.
427 defined(my $pid = fork) or croak $!;
428 if (!$pid) {
429 $SVN::Error::handler = \&libsvn_skip_unknown_revs;
430
431 # Yes I'm perfectly aware that the fourth argument
432 # below is the limit revisions number. Unfortunately
433 # performance sucks with it enabled, so it's much
434 # faster to fetch revision ranges instead of relying
435 # on the limiter.
436 libsvn_get_log(libsvn_dup_ra($SVN), [''],
437 $min, $max, 0, 1, 1,
438 sub {
439 my $log_msg;
440 if ($last_commit) {
441 $log_msg = libsvn_fetch(
442 $last_commit, @_);
443 $last_commit = git_commit(
444 $log_msg,
445 $last_commit,
446 @parents);
447 } else {
448 $log_msg = libsvn_new_tree(@_);
449 $last_commit = git_commit(
450 $log_msg, @parents);
451 }
452 });
453 exit 0;
454 }
455 waitpid $pid, 0;
456 croak $? if $?;
457 ($last_rev, $last_commit) = svn_grab_base_rev();
458 last if ($max >= $head);
459 $min = $max + 1;
460 $max += $inc;
461 $max = $head if ($max > $head);
462 }
463 restore_index($index);
464 return { revision => $last_rev, commit => $last_commit };
465 }
466
467 sub commit {
468 my (@commits) = @_;
469 check_upgrade_needed();
470 if ($_stdin || !@commits) {
471 print "Reading from stdin...\n";
472 @commits = ();
473 while (<STDIN>) {
474 if (/\b($sha1_short)\b/o) {
475 unshift @commits, $1;
476 }
477 }
478 }
479 my @revs;
480 foreach my $c (@commits) {
481 chomp(my @tmp = safe_qx('git-rev-parse',$c));
482 if (scalar @tmp == 1) {
483 push @revs, $tmp[0];
484 } elsif (scalar @tmp > 1) {
485 push @revs, reverse (safe_qx('git-rev-list',@tmp));
486 } else {
487 die "Failed to rev-parse $c\n";
488 }
489 }
490 chomp @revs;
491 $_use_lib ? commit_lib(@revs) : commit_cmd(@revs);
492 print "Done committing ",scalar @revs," revisions to SVN\n";
493 }
494
495 sub commit_cmd {
496 my (@revs) = @_;
497
498 chdir $SVN_WC or croak "Unable to chdir $SVN_WC: $!\n";
499 my $info = svn_info('.');
500 my $fetched = fetch();
501 if ($info->{Revision} != $fetched->{revision}) {
502 print STDERR "There are new revisions that were fetched ",
503 "and need to be merged (or acknowledged) ",
504 "before committing.\n";
505 exit 1;
506 }
507 $info = svn_info('.');
508 read_uuid($info);
509 my $last = $fetched;
510 foreach my $c (@revs) {
511 my $mods = svn_checkout_tree($last, $c);
512 if (scalar @$mods == 0) {
513 print "Skipping, no changes detected\n";
514 next;
515 }
516 $last = svn_commit_tree($last, $c);
517 }
518 }
519
520 sub commit_lib {
521 my (@revs) = @_;
522 my ($r_last, $cmt_last) = svn_grab_base_rev();
523 defined $r_last or die "Must have an existing revision to commit\n";
524 my $fetched = fetch();
525 if ($r_last != $fetched->{revision}) {
526 print STDERR "There are new revisions that were fetched ",
527 "and need to be merged (or acknowledged) ",
528 "before committing.\n",
529 "last rev: $r_last\n",
530 " current: $fetched->{revision}\n";
531 exit 1;
532 }
533 read_uuid();
534 my @lock = $SVN::Core::VERSION ge '1.2.0' ? (undef, 0) : ();
535 my $commit_msg = "$GIT_SVN_DIR/.svn-commit.tmp.$$";
536
537 my $repo;
538 set_svn_commit_env();
539 foreach my $c (@revs) {
540 my $log_msg = get_commit_message($c, $commit_msg);
541
542 # fork for each commit because there's a memory leak I
543 # can't track down... (it's probably in the SVN code)
544 defined(my $pid = open my $fh, '-|') or croak $!;
545 if (!$pid) {
546 my $ed = SVN::Git::Editor->new(
547 { r => $r_last,
548 ra => libsvn_dup_ra($SVN),
549 c => $c,
550 svn_path => $SVN->{svn_path},
551 },
552 $SVN->get_commit_editor(
553 $log_msg->{msg},
554 sub {
555 libsvn_commit_cb(
556 @_, $c,
557 $log_msg->{msg},
558 $r_last,
559 $cmt_last)
560 },
561 @lock)
562 );
563 my $mods = libsvn_checkout_tree($cmt_last, $c, $ed);
564 if (@$mods == 0) {
565 print "No changes\nr$r_last = $cmt_last\n";
566 $ed->abort_edit;
567 } else {
568 $ed->close_edit;
569 }
570 exit 0;
571 }
572 my ($r_new, $cmt_new, $no);
573 while (<$fh>) {
574 print $_;
575 chomp;
576 if (/^r(\d+) = ($sha1)$/o) {
577 ($r_new, $cmt_new) = ($1, $2);
578 } elsif ($_ eq 'No changes') {
579 $no = 1;
580 }
581 }
582 close $fh or exit 1;
583 if (! defined $r_new && ! defined $cmt_new) {
584 unless ($no) {
585 die "Failed to parse revision information\n";
586 }
587 } else {
588 ($r_last, $cmt_last) = ($r_new, $cmt_new);
589 }
590 }
591 $ENV{LC_ALL} = 'C';
592 unlink $commit_msg;
593 }
594
595 sub dcommit {
596 my $gs = "refs/remotes/$GIT_SVN";
597 chomp(my @refs = safe_qx(qw/git-rev-list --no-merges/, "$gs..HEAD"));
598 my $last_rev;
599 foreach my $d (reverse @refs) {
600 if (quiet_run('git-rev-parse','--verify',"$d~1") != 0) {
601 die "Commit $d\n",
602 "has no parent commit, and therefore ",
603 "nothing to diff against.\n",
604 "You should be working from a repository ",
605 "originally created by git-svn\n";
606 }
607 unless (defined $last_rev) {
608 (undef, $last_rev, undef) = cmt_metadata("$d~1");
609 unless (defined $last_rev) {
610 die "Unable to extract revision information ",
611 "from commit $d~1\n";
612 }
613 }
614 if ($_dry_run) {
615 print "diff-tree $d~1 $d\n";
616 } else {
617 if (my $r = commit_diff("$d~1", $d, undef, $last_rev)) {
618 $last_rev = $r;
619 } # else: no changes, same $last_rev
620 }
621 }
622 return if $_dry_run;
623 fetch();
624 my @diff = safe_qx(qw/git-diff-tree HEAD/, $gs);
625 my @finish;
626 if (@diff) {
627 @finish = qw/rebase/;
628 push @finish, qw/--merge/ if $_merge;
629 push @finish, "--strategy=$_strategy" if $_strategy;
630 print STDERR "W: HEAD and $gs differ, using @finish:\n", @diff;
631 } else {
632 print "No changes between current HEAD and $gs\n",
633 "Hard resetting to the latest $gs\n";
634 @finish = qw/reset --mixed/;
635 }
636 sys('git', @finish, $gs);
637 }
638
639 sub show_ignore {
640 $SVN_URL ||= file_to_s("$GIT_SVN_DIR/info/url");
641 $_use_lib ? show_ignore_lib() : show_ignore_cmd();
642 }
643
644 sub show_ignore_cmd {
645 require File::Find or die $!;
646 if (defined $_revision) {
647 die "-r/--revision option doesn't work unless the Perl SVN ",
648 "libraries are used\n";
649 }
650 chdir $SVN_WC or croak $!;
651 my %ign;
652 File::Find::find({wanted=>sub{if(lstat $_ && -d _ && -d "$_/.svn"){
653 s#^\./##;
654 @{$ign{$_}} = svn_propget_base('svn:ignore', $_);
655 }}, no_chdir=>1},'.');
656
657 print "\n# /\n";
658 foreach (@{$ign{'.'}}) { print '/',$_ if /\S/ }
659 delete $ign{'.'};
660 foreach my $i (sort keys %ign) {
661 print "\n# ",$i,"\n";
662 foreach (@{$ign{$i}}) { print '/',$i,'/',$_ if /\S/ }
663 }
664 }
665
666 sub show_ignore_lib {
667 my $repo;
668 $SVN ||= libsvn_connect($SVN_URL);
669 my $r = defined $_revision ? $_revision : $SVN->get_latest_revnum;
670 libsvn_traverse_ignore(\*STDOUT, $SVN->{svn_path}, $r);
671 }
672
673 sub graft_branches {
674 my $gr_file = "$GIT_DIR/info/grafts";
675 my ($grafts, $comments) = read_grafts($gr_file);
676 my $gr_sha1;
677
678 if (%$grafts) {
679 # temporarily disable our grafts file to make this idempotent
680 chomp($gr_sha1 = safe_qx(qw/git-hash-object -w/,$gr_file));
681 rename $gr_file, "$gr_file~$gr_sha1" or croak $!;
682 }
683
684 my $l_map = read_url_paths();
685 my @re = map { qr/$_/is } @_opt_m if @_opt_m;
686 unless ($_no_default_regex) {
687 push @re, (qr/\b(?:merge|merging|merged)\s+with\s+([\w\.\-]+)/i,
688 qr/\b(?:merge|merging|merged)\s+([\w\.\-]+)/i,
689 qr/\b(?:from|of)\s+([\w\.\-]+)/i );
690 }
691 foreach my $u (keys %$l_map) {
692 if (@re) {
693 foreach my $p (keys %{$l_map->{$u}}) {
694 graft_merge_msg($grafts,$l_map,$u,$p,@re);
695 }
696 }
697 unless ($_no_graft_copy) {
698 if ($_use_lib) {
699 graft_file_copy_lib($grafts,$l_map,$u);
700 } else {
701 graft_file_copy_cmd($grafts,$l_map,$u);
702 }
703 }
704 }
705 graft_tree_joins($grafts);
706
707 write_grafts($grafts, $comments, $gr_file);
708 unlink "$gr_file~$gr_sha1" if $gr_sha1;
709 }
710
711 sub multi_init {
712 my $url = shift;
713 $_trunk ||= 'trunk';
714 $_trunk =~ s#/+$##;
715 $url =~ s#/+$## if $url;
716 if ($_trunk !~ m#^[a-z\+]+://#) {
717 $_trunk = '/' . $_trunk if ($_trunk !~ m#^/#);
718 unless ($url) {
719 print STDERR "E: '$_trunk' is not a complete URL ",
720 "and a separate URL is not specified\n";
721 exit 1;
722 }
723 $_trunk = $url . $_trunk;
724 }
725 my $ch_id;
726 if ($GIT_SVN eq 'git-svn') {
727 $ch_id = 1;
728 $GIT_SVN = $ENV{GIT_SVN_ID} = 'trunk';
729 }
730 init_vars();
731 unless (-d $GIT_SVN_DIR) {
732 print "GIT_SVN_ID set to 'trunk' for $_trunk\n" if $ch_id;
733 init($_trunk);
734 sys('git-repo-config', 'svn.trunk', $_trunk);
735 }
736 complete_url_ls_init($url, $_branches, '--branches/-b', '');
737 complete_url_ls_init($url, $_tags, '--tags/-t', 'tags/');
738 }
739
740 sub multi_fetch {
741 # try to do trunk first, since branches/tags
742 # may be descended from it.
743 if (-e "$GIT_DIR/svn/trunk/info/url") {
744 fetch_child_id('trunk', @_);
745 }
746 rec_fetch('', "$GIT_DIR/svn", @_);
747 }
748
749 sub show_log {
750 my (@args) = @_;
751 my ($r_min, $r_max);
752 my $r_last = -1; # prevent dupes
753 rload_authors() if $_authors;
754 if (defined $TZ) {
755 $ENV{TZ} = $TZ;
756 } else {
757 delete $ENV{TZ};
758 }
759 if (defined $_revision) {
760 if ($_revision =~ /^(\d+):(\d+)$/) {
761 ($r_min, $r_max) = ($1, $2);
762 } elsif ($_revision =~ /^\d+$/) {
763 $r_min = $r_max = $_revision;
764 } else {
765 print STDERR "-r$_revision is not supported, use ",
766 "standard \'git log\' arguments instead\n";
767 exit 1;
768 }
769 }
770
771 config_pager();
772 my $pid = open(my $log,'-|');
773 defined $pid or croak $!;
774 if (!$pid) {
775 exec(git_svn_log_cmd($r_min,$r_max), @args) or croak $!;
776 }
777 run_pager();
778 my (@k, $c, $d);
779
780 while (<$log>) {
781 if (/^${_esc_color}commit ($sha1_short)/o) {
782 my $cmt = $1;
783 if ($c && cmt_showable($c) && $c->{r} != $r_last) {
784 $r_last = $c->{r};
785 process_commit($c, $r_min, $r_max, \@k) or
786 goto out;
787 }
788 $d = undef;
789 $c = { c => $cmt };
790 } elsif (/^${_esc_color}author (.+) (\d+) ([\-\+]?\d+)$/) {
791 get_author_info($c, $1, $2, $3);
792 } elsif (/^${_esc_color}(?:tree|parent|committer) /) {
793 # ignore
794 } elsif (/^${_esc_color}:\d{6} \d{6} $sha1_short/o) {
795 push @{$c->{raw}}, $_;
796 } elsif (/^${_esc_color}[ACRMDT]\t/) {
797 # we could add $SVN->{svn_path} here, but that requires
798 # remote access at the moment (repo_path_split)...
799 s#^(${_esc_color})([ACRMDT])\t#$1 $2 #;
800 push @{$c->{changed}}, $_;
801 } elsif (/^${_esc_color}diff /) {
802 $d = 1;
803 push @{$c->{diff}}, $_;
804 } elsif ($d) {
805 push @{$c->{diff}}, $_;
806 } elsif (/^${_esc_color} (git-svn-id:.+)$/) {
807 ($c->{url}, $c->{r}, undef) = extract_metadata($1);
808 } elsif (s/^${_esc_color} //) {
809 push @{$c->{l}}, $_;
810 }
811 }
812 if ($c && defined $c->{r} && $c->{r} != $r_last) {
813 $r_last = $c->{r};
814 process_commit($c, $r_min, $r_max, \@k);
815 }
816 if (@k) {
817 my $swap = $r_max;
818 $r_max = $r_min;
819 $r_min = $swap;
820 process_commit($_, $r_min, $r_max) foreach reverse @k;
821 }
822 out:
823 close $log;
824 print '-' x72,"\n" unless $_incremental || $_oneline;
825 }
826
827 sub commit_diff_usage {
828 print STDERR "Usage: $0 commit-diff <tree-ish> <tree-ish> [<URL>]\n";
829 exit 1
830 }
831
832 sub commit_diff {
833 if (!$_use_lib) {
834 print STDERR "commit-diff must be used with SVN libraries\n";
835 exit 1;
836 }
837 my $ta = shift or commit_diff_usage();
838 my $tb = shift or commit_diff_usage();
839 if (!eval { $SVN_URL = shift || file_to_s("$GIT_SVN_DIR/info/url") }) {
840 print STDERR "Needed URL or usable git-svn id command-line\n";
841 commit_diff_usage();
842 }
843 my $r = shift;
844 unless (defined $r) {
845 if (defined $_revision) {
846 $r = $_revision
847 } else {
848 die "-r|--revision is a required argument\n";
849 }
850 }
851 if (defined $_message && defined $_file) {
852 print STDERR "Both --message/-m and --file/-F specified ",
853 "for the commit message.\n",
854 "I have no idea what you mean\n";
855 exit 1;
856 }
857 if (defined $_file) {
858 $_message = file_to_s($_file);
859 } else {
860 $_message ||= get_commit_message($tb,
861 "$GIT_DIR/.svn-commit.tmp.$$")->{msg};
862 }
863 $SVN ||= libsvn_connect($SVN_URL);
864 if ($r eq 'HEAD') {
865 $r = $SVN->get_latest_revnum;
866 } elsif ($r !~ /^\d+$/) {
867 die "revision argument: $r not understood by git-svn\n";
868 }
869 my @lock = $SVN::Core::VERSION ge '1.2.0' ? (undef, 0) : ();
870 my $rev_committed;
871 my $ed = SVN::Git::Editor->new({ r => $r,
872 ra => libsvn_dup_ra($SVN),
873 c => $tb,
874 svn_path => $SVN->{svn_path}
875 },
876 $SVN->get_commit_editor($_message,
877 sub {
878 $rev_committed = $_[0];
879 print "Committed $_[0]\n";
880 }, @lock)
881 );
882 eval {
883 my $mods = libsvn_checkout_tree($ta, $tb, $ed);
884 if (@$mods == 0) {
885 print "No changes\n$ta == $tb\n";
886 $ed->abort_edit;
887 } else {
888 $ed->close_edit;
889 }
890 };
891 fatal "$@\n" if $@;
892 $_message = $_file = undef;
893 return $rev_committed;
894 }
895
896 ########################### utility functions #########################
897
898 sub cmt_showable {
899 my ($c) = @_;
900 return 1 if defined $c->{r};
901 if ($c->{l} && $c->{l}->[-1] eq "...\n" &&
902 $c->{a_raw} =~ /\@([a-f\d\-]+)>$/) {
903 my @msg = safe_qx(qw/git-cat-file commit/, $c->{c});
904 shift @msg while ($msg[0] ne "\n");
905 shift @msg;
906 @{$c->{l}} = grep !/^git-svn-id: /, @msg;
907
908 (undef, $c->{r}, undef) = extract_metadata(
909 (grep(/^git-svn-id: /, @msg))[-1]);
910 }
911 return defined $c->{r};
912 }
913
914 sub log_use_color {
915 return 1 if $_color;
916 my $dc;
917 chomp($dc = `git-repo-config --get diff.color`);
918 if ($dc eq 'auto') {
919 if (-t *STDOUT || (defined $_pager &&
920 `git-repo-config --bool --get pager.color` !~ /^false/)) {
921 return ($ENV{TERM} && $ENV{TERM} ne 'dumb');
922 }
923 return 0;
924 }
925 return 0 if $dc eq 'never';
926 return 1 if $dc eq 'always';
927 chomp($dc = `git-repo-config --bool --get diff.color`);
928 $dc eq 'true';
929 }
930
931 sub git_svn_log_cmd {
932 my ($r_min, $r_max) = @_;
933 my @cmd = (qw/git-log --abbrev-commit --pretty=raw
934 --default/, "refs/remotes/$GIT_SVN");
935 push @cmd, '-r' unless $_non_recursive;
936 push @cmd, qw/--raw --name-status/ if $_verbose;
937 push @cmd, '--color' if log_use_color();
938 return @cmd unless defined $r_max;
939 if ($r_max == $r_min) {
940 push @cmd, '--max-count=1';
941 if (my $c = revdb_get($REVDB, $r_max)) {
942 push @cmd, $c;
943 }
944 } else {
945 my ($c_min, $c_max);
946 $c_max = revdb_get($REVDB, $r_max);
947 $c_min = revdb_get($REVDB, $r_min);
948 if (defined $c_min && defined $c_max) {
949 if ($r_max > $r_max) {
950 push @cmd, "$c_min..$c_max";
951 } else {
952 push @cmd, "$c_max..$c_min";
953 }
954 } elsif ($r_max > $r_min) {
955 push @cmd, $c_max;
956 } else {
957 push @cmd, $c_min;
958 }
959 }
960 return @cmd;
961 }
962
963 sub fetch_child_id {
964 my $id = shift;
965 print "Fetching $id\n";
966 my $ref = "$GIT_DIR/refs/remotes/$id";
967 defined(my $pid = open my $fh, '-|') or croak $!;
968 if (!$pid) {
969 $_repack = undef;
970 $GIT_SVN = $ENV{GIT_SVN_ID} = $id;
971 init_vars();
972 fetch(@_);
973 exit 0;
974 }
975 while (<$fh>) {
976 print $_;
977 check_repack() if (/^r\d+ = $sha1/);
978 }
979 close $fh or croak $?;
980 }
981
982 sub rec_fetch {
983 my ($pfx, $p, @args) = @_;
984 my @dir;
985 foreach (sort <$p/*>) {
986 if (-r "$_/info/url") {
987 $pfx .= '/' if $pfx && $pfx !~ m!/$!;
988 my $id = $pfx . basename $_;
989 next if $id eq 'trunk';
990 fetch_child_id($id, @args);
991 } elsif (-d $_) {
992 push @dir, $_;
993 }
994 }
995 foreach (@dir) {
996 my $x = $_;
997 $x =~ s!^\Q$GIT_DIR\E/svn/!!;
998 rec_fetch($x, $_);
999 }
1000 }
1001
1002 sub complete_url_ls_init {
1003 my ($url, $var, $switch, $pfx) = @_;
1004 unless ($var) {
1005 print STDERR "W: $switch not specified\n";
1006 return;
1007 }
1008 $var =~ s#/+$##;
1009 if ($var !~ m#^[a-z\+]+://#) {
1010 $var = '/' . $var if ($var !~ m#^/#);
1011 unless ($url) {
1012 print STDERR "E: '$var' is not a complete URL ",
1013 "and a separate URL is not specified\n";
1014 exit 1;
1015 }
1016 $var = $url . $var;
1017 }
1018 chomp(my @ls = $_use_lib ? libsvn_ls_fullurl($var)
1019 : safe_qx(qw/svn ls --non-interactive/, $var));
1020 my $old = $GIT_SVN;
1021 defined(my $pid = fork) or croak $!;
1022 if (!$pid) {
1023 foreach my $u (map { "$var/$_" } (grep m!/$!, @ls)) {
1024 $u =~ s#/+$##;
1025 if ($u !~ m!\Q$var\E/(.+)$!) {
1026 print STDERR "W: Unrecognized URL: $u\n";
1027 die "This should never happen\n";
1028 }
1029 # don't try to init already existing refs
1030 my $id = $pfx.$1;
1031 $GIT_SVN = $ENV{GIT_SVN_ID} = $id;
1032 init_vars();
1033 unless (-d $GIT_SVN_DIR) {
1034 print "init $u => $id\n";
1035 init($u);
1036 }
1037 }
1038 exit 0;
1039 }
1040 waitpid $pid, 0;
1041 croak $? if $?;
1042 my ($n) = ($switch =~ /^--(\w+)/);
1043 sys('git-repo-config', "svn.$n", $var);
1044 }
1045
1046 sub common_prefix {
1047 my $paths = shift;
1048 my %common;
1049 foreach (@$paths) {
1050 my @tmp = split m#/#, $_;
1051 my $p = '';
1052 while (my $x = shift @tmp) {
1053 $p .= "/$x";
1054 $common{$p} ||= 0;
1055 $common{$p}++;
1056 }
1057 }
1058 foreach (sort {length $b <=> length $a} keys %common) {
1059 if ($common{$_} == @$paths) {
1060 return $_;
1061 }
1062 }
1063 return '';
1064 }
1065
1066 # grafts set here are 'stronger' in that they're based on actual tree
1067 # matches, and won't be deleted from merge-base checking in write_grafts()
1068 sub graft_tree_joins {
1069 my $grafts = shift;
1070 map_tree_joins() if (@_branch_from && !%tree_map);
1071 return unless %tree_map;
1072
1073 git_svn_each(sub {
1074 my $i = shift;
1075 defined(my $pid = open my $fh, '-|') or croak $!;
1076 if (!$pid) {
1077 exec qw/git-rev-list --pretty=raw/,
1078 "refs/remotes/$i" or croak $!;
1079 }
1080 while (<$fh>) {
1081 next unless /^commit ($sha1)$/o;
1082 my $c = $1;
1083 my ($t) = (<$fh> =~ /^tree ($sha1)$/o);
1084 next unless $tree_map{$t};
1085
1086 my $l;
1087 do {
1088 $l = readline $fh;
1089 } until ($l =~ /^committer (?:.+) (\d+) ([\-\+]?\d+)$/);
1090
1091 my ($s, $tz) = ($1, $2);
1092 if ($tz =~ s/^\+//) {
1093 $s += tz_to_s_offset($tz);
1094 } elsif ($tz =~ s/^\-//) {
1095 $s -= tz_to_s_offset($tz);
1096 }
1097
1098 my ($url_a, $r_a, $uuid_a) = cmt_metadata($c);
1099
1100 foreach my $p (@{$tree_map{$t}}) {
1101 next if $p eq $c;
1102 my $mb = eval {
1103 safe_qx('git-merge-base', $c, $p)
1104 };
1105 next unless ($@ || $?);
1106 if (defined $r_a) {
1107 # see if SVN says it's a relative
1108 my ($url_b, $r_b, $uuid_b) =
1109 cmt_metadata($p);
1110 next if (defined $url_b &&
1111 defined $url_a &&
1112 ($url_a eq $url_b) &&
1113 ($uuid_a eq $uuid_b));
1114 if ($uuid_a eq $uuid_b) {
1115 if ($r_b < $r_a) {
1116 $grafts->{$c}->{$p} = 2;
1117 next;
1118 } elsif ($r_b > $r_a) {
1119 $grafts->{$p}->{$c} = 2;
1120 next;
1121 }
1122 }
1123 }
1124 my $ct = get_commit_time($p);
1125 if ($ct < $s) {
1126 $grafts->{$c}->{$p} = 2;
1127 } elsif ($ct > $s) {
1128 $grafts->{$p}->{$c} = 2;
1129 }
1130 # what should we do when $ct == $s ?
1131 }
1132 }
1133 close $fh or croak $?;
1134 });
1135 }
1136
1137 # this isn't funky-filename safe, but good enough for now...
1138 sub graft_file_copy_cmd {
1139 my ($grafts, $l_map, $u) = @_;
1140 my $paths = $l_map->{$u};
1141 my $pfx = common_prefix([keys %$paths]);
1142 $SVN_URL ||= $u.$pfx;
1143 my $pid = open my $fh, '-|';
1144 defined $pid or croak $!;
1145 unless ($pid) {
1146 my @exec = qw/svn log -v/;
1147 push @exec, "-r$_revision" if defined $_revision;
1148 exec @exec, $u.$pfx or croak $!;
1149 }
1150 my ($r, $mp) = (undef, undef);
1151 while (<$fh>) {
1152 chomp;
1153 if (/^\-{72}$/) {
1154 $mp = $r = undef;
1155 } elsif (/^r(\d+) \| /) {
1156 $r = $1 unless defined $r;
1157 } elsif (/^Changed paths:/) {
1158 $mp = 1;
1159 } elsif ($mp && m#^ [AR] /(\S.*?) \(from /(\S+?):(\d+)\)$#) {
1160 my ($p1, $p0, $r0) = ($1, $2, $3);
1161 my $c = find_graft_path_commit($paths, $p1, $r);
1162 next unless $c;
1163 find_graft_path_parents($grafts, $paths, $c, $p0, $r0);
1164 }
1165 }
1166 }
1167
1168 sub graft_file_copy_lib {
1169 my ($grafts, $l_map, $u) = @_;
1170 my $tree_paths = $l_map->{$u};
1171 my $pfx = common_prefix([keys %$tree_paths]);
1172 my ($repo, $path) = repo_path_split($u.$pfx);
1173 $SVN = libsvn_connect($repo);
1174
1175 my ($base, $head) = libsvn_parse_revision();
1176 my $inc = 1000;
1177 my ($min, $max) = ($base, $head < $base+$inc ? $head : $base+$inc);
1178 my $eh = $SVN::Error::handler;
1179 $SVN::Error::handler = \&libsvn_skip_unknown_revs;
1180 while (1) {
1181 my $pool = SVN::Pool->new;
1182 libsvn_get_log(libsvn_dup_ra($SVN), [$path],
1183 $min, $max, 0, 2, 1,
1184 sub {
1185 libsvn_graft_file_copies($grafts, $tree_paths,
1186 $path, @_);
1187 }, $pool);
1188 $pool->clear;
1189 last if ($max >= $head);
1190 $min = $max + 1;
1191 $max += $inc;
1192 $max = $head if ($max > $head);
1193 }
1194 $SVN::Error::handler = $eh;
1195 }
1196
1197 sub process_merge_msg_matches {
1198 my ($grafts, $l_map, $u, $p, $c, @matches) = @_;
1199 my (@strong, @weak);
1200 foreach (@matches) {
1201 # merging with ourselves is not interesting
1202 next if $_ eq $p;
1203 if ($l_map->{$u}->{$_}) {
1204 push @strong, $_;
1205 } else {
1206 push @weak, $_;
1207 }
1208 }
1209 foreach my $w (@weak) {
1210 last if @strong;
1211 # no exact match, use branch name as regexp.
1212 my $re = qr/\Q$w\E/i;
1213 foreach (keys %{$l_map->{$u}}) {
1214 if (/$re/) {
1215 push @strong, $l_map->{$u}->{$_};
1216 last;
1217 }
1218 }
1219 last if @strong;
1220 $w = basename($w);
1221 $re = qr/\Q$w\E/i;
1222 foreach (keys %{$l_map->{$u}}) {
1223 if (/$re/) {
1224 push @strong, $l_map->{$u}->{$_};
1225 last;
1226 }
1227 }
1228 }
1229 my ($rev) = ($c->{m} =~ /^git-svn-id:\s(?:\S+?)\@(\d+)
1230 \s(?:[a-f\d\-]+)$/xsm);
1231 unless (defined $rev) {
1232 ($rev) = ($c->{m} =~/^git-svn-id:\s(\d+)
1233 \@(?:[a-f\d\-]+)/xsm);
1234 return unless defined $rev;
1235 }
1236 foreach my $m (@strong) {
1237 my ($r0, $s0) = find_rev_before($rev, $m, 1);
1238 $grafts->{$c->{c}}->{$s0} = 1 if defined $s0;
1239 }
1240 }
1241
1242 sub graft_merge_msg {
1243 my ($grafts, $l_map, $u, $p, @re) = @_;
1244
1245 my $x = $l_map->{$u}->{$p};
1246 my $rl = rev_list_raw($x);
1247 while (my $c = next_rev_list_entry($rl)) {
1248 foreach my $re (@re) {
1249 my (@br) = ($c->{m} =~ /$re/g);
1250 next unless @br;
1251 process_merge_msg_matches($grafts,$l_map,$u,$p,$c,@br);
1252 }
1253 }
1254 }
1255
1256 sub read_uuid {
1257 return if $SVN_UUID;
1258 if ($_use_lib) {
1259 my $pool = SVN::Pool->new;
1260 $SVN_UUID = $SVN->get_uuid($pool);
1261 $pool->clear;
1262 } else {
1263 my $info = shift || svn_info('.');
1264 $SVN_UUID = $info->{'Repository UUID'} or
1265 croak "Repository UUID unreadable\n";
1266 }
1267 }
1268
1269 sub quiet_run {
1270 my $pid = fork;
1271 defined $pid or croak $!;
1272 if (!$pid) {
1273 open my $null, '>', '/dev/null' or croak $!;
1274 open STDERR, '>&', $null or croak $!;
1275 open STDOUT, '>&', $null or croak $!;
1276 exec @_ or croak $!;
1277 }
1278 waitpid $pid, 0;
1279 return $?;
1280 }
1281
1282 sub repo_path_split {
1283 my $full_url = shift;
1284 $full_url =~ s#/+$##;
1285
1286 foreach (@repo_path_split_cache) {
1287 if ($full_url =~ s#$_##) {
1288 my $u = $1;
1289 $full_url =~ s#^/+##;
1290 return ($u, $full_url);
1291 }
1292 }
1293 if ($_use_lib) {
1294 my $tmp = libsvn_connect($full_url);
1295 return ($tmp->{repos_root}, $tmp->{svn_path});
1296 } else {
1297 my ($url, $path) = ($full_url =~ m!^([a-z\+]+://[^/]*)(.*)$!i);
1298 $path =~ s#^/+##;
1299 my @paths = split(m#/+#, $path);
1300 while (quiet_run(qw/svn ls --non-interactive/, $url)) {
1301 my $n = shift @paths || last;
1302 $url .= "/$n";
1303 }
1304 push @repo_path_split_cache, qr/^(\Q$url\E)/;
1305 $path = join('/',@paths);
1306 return ($url, $path);
1307 }
1308 }
1309
1310 sub setup_git_svn {
1311 defined $SVN_URL or croak "SVN repository location required\n";
1312 unless (-d $GIT_DIR) {
1313 croak "GIT_DIR=$GIT_DIR does not exist!\n";
1314 }
1315 mkpath([$GIT_SVN_DIR]);
1316 mkpath(["$GIT_SVN_DIR/info"]);
1317 open my $fh, '>>',$REVDB or croak $!;
1318 close $fh;
1319 s_to_file($SVN_URL,"$GIT_SVN_DIR/info/url");
1320
1321 }
1322
1323 sub assert_svn_wc_clean {
1324 return if $_use_lib;
1325 my ($svn_rev) = @_;
1326 croak "$svn_rev is not an integer!\n" unless ($svn_rev =~ /^\d+$/);
1327 my $lcr = svn_info('.')->{'Last Changed Rev'};
1328 if ($svn_rev != $lcr) {
1329 print STDERR "Checking for copy-tree ... ";
1330 my @diff = grep(/^Index: /,(safe_qx(qw(svn diff),
1331 "-r$lcr:$svn_rev")));
1332 if (@diff) {
1333 croak "Nope! Expected r$svn_rev, got r$lcr\n";
1334 } else {
1335 print STDERR "OK!\n";
1336 }
1337 }
1338 my @status = grep(!/^Performing status on external/,(`svn status`));
1339 @status = grep(!/^\s*$/,@status);
1340 @status = grep(!/^X/,@status) if $_no_ignore_ext;
1341 if (scalar @status) {
1342 print STDERR "Tree ($SVN_WC) is not clean:\n";
1343 print STDERR $_ foreach @status;
1344 croak;
1345 }
1346 }
1347
1348 sub get_tree_from_treeish {
1349 my ($treeish) = @_;
1350 croak "Not a sha1: $treeish\n" unless $treeish =~ /^$sha1$/o;
1351 chomp(my $type = `git-cat-file -t $treeish`);
1352 my $expected;
1353 while ($type eq 'tag') {
1354 chomp(($treeish, $type) = `git-cat-file tag $treeish`);
1355 }
1356 if ($type eq 'commit') {
1357 $expected = (grep /^tree /,`git-cat-file commit $treeish`)[0];
1358 ($expected) = ($expected =~ /^tree ($sha1)$/);
1359 die "Unable to get tree from $treeish\n" unless $expected;
1360 } elsif ($type eq 'tree') {
1361 $expected = $treeish;
1362 } else {
1363 die "$treeish is a $type, expected tree, tag or commit\n";
1364 }
1365 return $expected;
1366 }
1367
1368 sub assert_tree {
1369 return if $_use_lib;
1370 my ($treeish) = @_;
1371 my $expected = get_tree_from_treeish($treeish);
1372
1373 my $tmpindex = $GIT_SVN_INDEX.'.assert-tmp';
1374 if (-e $tmpindex) {
1375 unlink $tmpindex or croak $!;
1376 }
1377 my $old_index = set_index($tmpindex);
1378 index_changes(1);
1379 chomp(my $tree = `git-write-tree`);
1380 restore_index($old_index);
1381 if ($tree ne $expected) {
1382 croak "Tree mismatch, Got: $tree, Expected: $expected\n";
1383 }
1384 unlink $tmpindex;
1385 }
1386
1387 sub parse_diff_tree {
1388 my $diff_fh = shift;
1389 local $/ = "\0";
1390 my $state = 'meta';
1391 my @mods;
1392 while (<$diff_fh>) {
1393 chomp $_; # this gets rid of the trailing "\0"
1394 if ($state eq 'meta' && /^:(\d{6})\s(\d{6})\s
1395 $sha1\s($sha1)\s([MTCRAD])\d*$/xo) {
1396 push @mods, { mode_a => $1, mode_b => $2,
1397 sha1_b => $3, chg => $4 };
1398 if ($4 =~ /^(?:C|R)$/) {
1399 $state = 'file_a';
1400 } else {
1401 $state = 'file_b';
1402 }
1403 } elsif ($state eq 'file_a') {
1404 my $x = $mods[$#mods] or croak "Empty array\n";
1405 if ($x->{chg} !~ /^(?:C|R)$/) {
1406 croak "Error parsing $_, $x->{chg}\n";
1407 }
1408 $x->{file_a} = $_;
1409 $state = 'file_b';
1410 } elsif ($state eq 'file_b') {
1411 my $x = $mods[$#mods] or croak "Empty array\n";
1412 if (exists $x->{file_a} && $x->{chg} !~ /^(?:C|R)$/) {
1413 croak "Error parsing $_, $x->{chg}\n";
1414 }
1415 if (!exists $x->{file_a} && $x->{chg} =~ /^(?:C|R)$/) {
1416 croak "Error parsing $_, $x->{chg}\n";
1417 }
1418 $x->{file_b} = $_;
1419 $state = 'meta';
1420 } else {
1421 croak "Error parsing $_\n";
1422 }
1423 }
1424 close $diff_fh or croak $?;
1425
1426 return \@mods;
1427 }
1428
1429 sub svn_check_prop_executable {
1430 my $m = shift;
1431 return if -l $m->{file_b};
1432 if ($m->{mode_b} =~ /755$/) {
1433 chmod((0755 &~ umask),$m->{file_b}) or croak $!;
1434 if ($m->{mode_a} !~ /755$/) {
1435 sys(qw(svn propset svn:executable 1), $m->{file_b});
1436 }
1437 -x $m->{file_b} or croak "$m->{file_b} is not executable!\n";
1438 } elsif ($m->{mode_b} !~ /755$/ && $m->{mode_a} =~ /755$/) {
1439 sys(qw(svn propdel svn:executable), $m->{file_b});
1440 chmod((0644 &~ umask),$m->{file_b}) or croak $!;
1441 -x $m->{file_b} and croak "$m->{file_b} is executable!\n";
1442 }
1443 }
1444
1445 sub svn_ensure_parent_path {
1446 my $dir_b = dirname(shift);
1447 svn_ensure_parent_path($dir_b) if ($dir_b ne File::Spec->curdir);
1448 mkpath([$dir_b]) unless (-d $dir_b);
1449 sys(qw(svn add -N), $dir_b) unless (-d "$dir_b/.svn");
1450 }
1451
1452 sub precommit_check {
1453 my $mods = shift;
1454 my (%rm_file, %rmdir_check, %added_check);
1455
1456 my %o = ( D => 0, R => 1, C => 2, A => 3, M => 3, T => 3 );
1457 foreach my $m (sort { $o{$a->{chg}} <=> $o{$b->{chg}} } @$mods) {
1458 if ($m->{chg} eq 'R') {
1459 if (-d $m->{file_b}) {
1460 err_dir_to_file("$m->{file_a} => $m->{file_b}");
1461 }
1462 # dir/$file => dir/file/$file
1463 my $dirname = dirname($m->{file_b});
1464 while ($dirname ne File::Spec->curdir) {
1465 if ($dirname ne $m->{file_a}) {
1466 $dirname = dirname($dirname);
1467 next;
1468 }
1469 err_file_to_dir("$m->{file_a} => $m->{file_b}");
1470 }
1471 # baz/zzz => baz (baz is a file)
1472 $dirname = dirname($m->{file_a});
1473 while ($dirname ne File::Spec->curdir) {
1474 if ($dirname ne $m->{file_b}) {
1475 $dirname = dirname($dirname);
1476 next;
1477 }
1478 err_dir_to_file("$m->{file_a} => $m->{file_b}");
1479 }
1480 }
1481 if ($m->{chg} =~ /^(D|R)$/) {
1482 my $t = $1 eq 'D' ? 'file_b' : 'file_a';
1483 $rm_file{ $m->{$t} } = 1;
1484 my $dirname = dirname( $m->{$t} );
1485 my $basename = basename( $m->{$t} );
1486 $rmdir_check{$dirname}->{$basename} = 1;
1487 } elsif ($m->{chg} =~ /^(?:A|C)$/) {
1488 if (-d $m->{file_b}) {
1489 err_dir_to_file($m->{file_b});
1490 }
1491 my $dirname = dirname( $m->{file_b} );
1492 my $basename = basename( $m->{file_b} );
1493 $added_check{$dirname}->{$basename} = 1;
1494 while ($dirname ne File::Spec->curdir) {
1495 if ($rm_file{$dirname}) {
1496 err_file_to_dir($m->{file_b});
1497 }
1498 $dirname = dirname $dirname;
1499 }
1500 }
1501 }
1502 return (\%rmdir_check, \%added_check);
1503
1504 sub err_dir_to_file {
1505 my $file = shift;
1506 print STDERR "Node change from directory to file ",
1507 "is not supported by Subversion: ",$file,"\n";
1508 exit 1;
1509 }
1510 sub err_file_to_dir {
1511 my $file = shift;
1512 print STDERR "Node change from file to directory ",
1513 "is not supported by Subversion: ",$file,"\n";
1514 exit 1;
1515 }
1516 }
1517
1518
1519 sub get_diff {
1520 my ($from, $treeish) = @_;
1521 assert_tree($from);
1522 print "diff-tree $from $treeish\n";
1523 my $pid = open my $diff_fh, '-|';
1524 defined $pid or croak $!;
1525 if ($pid == 0) {
1526 my @diff_tree = qw(git-diff-tree -z -r);
1527 if ($_cp_similarity) {
1528 push @diff_tree, "-C$_cp_similarity";
1529 } else {
1530 push @diff_tree, '-C';
1531 }
1532 push @diff_tree, '--find-copies-harder' if $_find_copies_harder;
1533 push @diff_tree, "-l$_l" if defined $_l;
1534 exec(@diff_tree, $from, $treeish) or croak $!;
1535 }
1536 return parse_diff_tree($diff_fh);
1537 }
1538
1539 sub svn_checkout_tree {
1540 my ($from, $treeish) = @_;
1541 my $mods = get_diff($from->{commit}, $treeish);
1542 return $mods unless (scalar @$mods);
1543 my ($rm, $add) = precommit_check($mods);
1544
1545 my %o = ( D => 1, R => 0, C => -1, A => 3, M => 3, T => 3 );
1546 foreach my $m (sort { $o{$a->{chg}} <=> $o{$b->{chg}} } @$mods) {
1547 if ($m->{chg} eq 'C') {
1548 svn_ensure_parent_path( $m->{file_b} );
1549 sys(qw(svn cp), $m->{file_a}, $m->{file_b});
1550 apply_mod_line_blob($m);
1551 svn_check_prop_executable($m);
1552 } elsif ($m->{chg} eq 'D') {
1553 sys(qw(svn rm --force), $m->{file_b});
1554 } elsif ($m->{chg} eq 'R') {
1555 svn_ensure_parent_path( $m->{file_b} );
1556 sys(qw(svn mv --force), $m->{file_a}, $m->{file_b});
1557 apply_mod_line_blob($m);
1558 svn_check_prop_executable($m);
1559 } elsif ($m->{chg} eq 'M') {
1560 apply_mod_line_blob($m);
1561 svn_check_prop_executable($m);
1562 } elsif ($m->{chg} eq 'T') {
1563 svn_check_prop_executable($m);
1564 apply_mod_line_blob($m);
1565 if ($m->{mode_a} =~ /^120/ && $m->{mode_b} !~ /^120/) {
1566 sys(qw(svn propdel svn:special), $m->{file_b});
1567 } else {
1568 sys(qw(svn propset svn:special *),$m->{file_b});
1569 }
1570 } elsif ($m->{chg} eq 'A') {
1571 svn_ensure_parent_path( $m->{file_b} );
1572 apply_mod_line_blob($m);
1573 sys(qw(svn add), $m->{file_b});
1574 svn_check_prop_executable($m);
1575 } else {
1576 croak "Invalid chg: $m->{chg}\n";
1577 }
1578 }
1579
1580 assert_tree($treeish);
1581 if ($_rmdir) { # remove empty directories
1582 handle_rmdir($rm, $add);
1583 }
1584 assert_tree($treeish);
1585 return $mods;
1586 }
1587
1588 sub libsvn_checkout_tree {
1589 my ($from, $treeish, $ed) = @_;
1590 my $mods = get_diff($from, $treeish);
1591 return $mods unless (scalar @$mods);
1592 my %o = ( D => 1, R => 0, C => -1, A => 3, M => 3, T => 3 );
1593 foreach my $m (sort { $o{$a->{chg}} <=> $o{$b->{chg}} } @$mods) {
1594 my $f = $m->{chg};
1595 if (defined $o{$f}) {
1596 $ed->$f($m, $_q);
1597 } else {
1598 croak "Invalid change type: $f\n";
1599 }
1600 }
1601 $ed->rmdirs($_q) if $_rmdir;
1602 return $mods;
1603 }
1604
1605 # svn ls doesn't work with respect to the current working tree, but what's
1606 # in the repository. There's not even an option for it... *sigh*
1607 # (added files don't show up and removed files remain in the ls listing)
1608 sub svn_ls_current {
1609 my ($dir, $rm, $add) = @_;
1610 chomp(my @ls = safe_qx('svn','ls',$dir));
1611 my @ret = ();
1612 foreach (@ls) {
1613 s#/$##; # trailing slashes are evil
1614 push @ret, $_ unless $rm->{$dir}->{$_};
1615 }
1616 if (exists $add->{$dir}) {
1617 push @ret, keys %{$add->{$dir}};
1618 }
1619 return \@ret;
1620 }
1621
1622 sub handle_rmdir {
1623 my ($rm, $add) = @_;
1624
1625 foreach my $dir (sort {length $b <=> length $a} keys %$rm) {
1626 my $ls = svn_ls_current($dir, $rm, $add);
1627 next if (scalar @$ls);
1628 sys(qw(svn rm --force),$dir);
1629
1630 my $dn = dirname $dir;
1631 $rm->{ $dn }->{ basename $dir } = 1;
1632 $ls = svn_ls_current($dn, $rm, $add);
1633 while (scalar @$ls == 0 && $dn ne File::Spec->curdir) {
1634 sys(qw(svn rm --force),$dn);
1635 $dir = basename $dn;
1636 $dn = dirname $dn;
1637 $rm->{ $dn }->{ $dir } = 1;
1638 $ls = svn_ls_current($dn, $rm, $add);
1639 }
1640 }
1641 }
1642
1643 sub get_commit_message {
1644 my ($commit, $commit_msg) = (@_);
1645 my %log_msg = ( msg => '' );
1646 open my $msg, '>', $commit_msg or croak $!;
1647
1648 chomp(my $type = `git-cat-file -t $commit`);
1649 if ($type eq 'commit' || $type eq 'tag') {
1650 my $pid = open my $msg_fh, '-|';
1651 defined $pid or croak $!;
1652
1653 if ($pid == 0) {
1654 exec('git-cat-file', $type, $commit) or croak $!;
1655 }
1656 my $in_msg = 0;
1657 while (<$msg_fh>) {
1658 if (!$in_msg) {
1659 $in_msg = 1 if (/^\s*$/);
1660 } elsif (/^git-svn-id: /) {
1661 # skip this, we regenerate the correct one
1662 # on re-fetch anyways
1663 } else {
1664 print $msg $_ or croak $!;
1665 }
1666 }
1667 close $msg_fh or croak $?;
1668 }
1669 close $msg or croak $!;
1670
1671 if ($_edit || ($type eq 'tree')) {
1672 my $editor = $ENV{VISUAL} || $ENV{EDITOR} || 'vi';
1673 system($editor, $commit_msg);
1674 }
1675
1676 # file_to_s removes all trailing newlines, so just use chomp() here:
1677 open $msg, '<', $commit_msg or croak $!;
1678 { local $/; chomp($log_msg{msg} = <$msg>); }
1679 close $msg or croak $!;
1680
1681 return \%log_msg;
1682 }
1683
1684 sub set_svn_commit_env {
1685 if (defined $LC_ALL) {
1686 $ENV{LC_ALL} = $LC_ALL;
1687 } else {
1688 delete $ENV{LC_ALL};
1689 }
1690 }
1691
1692 sub svn_commit_tree {
1693 my ($last, $commit) = @_;
1694 my $commit_msg = "$GIT_SVN_DIR/.svn-commit.tmp.$$";
1695 my $log_msg = get_commit_message($commit, $commit_msg);
1696 my ($oneline) = ($log_msg->{msg} =~ /([^\n\r]+)/);
1697 print "Committing $commit: $oneline\n";
1698
1699 set_svn_commit_env();
1700 my @ci_output = safe_qx(qw(svn commit -F),$commit_msg);
1701 $ENV{LC_ALL} = 'C';
1702 unlink $commit_msg;
1703 my ($committed) = ($ci_output[$#ci_output] =~ /(\d+)/);
1704 if (!defined $committed) {
1705 my $out = join("\n",@ci_output);
1706 print STDERR "W: Trouble parsing \`svn commit' output:\n\n",
1707 $out, "\n\nAssuming English locale...";
1708 ($committed) = ($out =~ /^Committed revision \d+\./sm);
1709 defined $committed or die " FAILED!\n",
1710 "Commit output failed to parse committed revision!\n",
1711 print STDERR " OK\n";
1712 }
1713
1714 my @svn_up = qw(svn up);
1715 push @svn_up, '--ignore-externals' unless $_no_ignore_ext;
1716 if ($_optimize_commits && ($committed == ($last->{revision} + 1))) {
1717 push @svn_up, "-r$committed";
1718 sys(@svn_up);
1719 my $info = svn_info('.');
1720 my $date = $info->{'Last Changed Date'} or die "Missing date\n";
1721 if ($info->{'Last Changed Rev'} != $committed) {
1722 croak "$info->{'Last Changed Rev'} != $committed\n"
1723 }
1724 my ($Y,$m,$d,$H,$M,$S,$tz) = ($date =~
1725 /(\d{4})\-(\d\d)\-(\d\d)\s
1726 (\d\d)\:(\d\d)\:(\d\d)\s([\-\+]\d+)/x)
1727 or croak "Failed to parse date: $date\n";
1728 $log_msg->{date} = "$tz $Y-$m-$d $H:$M:$S";
1729 $log_msg->{author} = $info->{'Last Changed Author'};
1730 $log_msg->{revision} = $committed;
1731 $log_msg->{msg} .= "\n";
1732 $log_msg->{parents} = [ $last->{commit} ];
1733 $log_msg->{commit} = git_commit($log_msg, $commit);
1734 return $log_msg;
1735 }
1736 # resync immediately
1737 push @svn_up, "-r$last->{revision}";
1738 sys(@svn_up);
1739 return fetch("$committed=$commit");
1740 }
1741
1742 sub rev_list_raw {
1743 my (@args) = @_;
1744 my $pid = open my $fh, '-|';
1745 defined $pid or croak $!;
1746 if (!$pid) {
1747 exec(qw/git-rev-list --pretty=raw/, @args) or croak $!;
1748 }
1749 return { fh => $fh, t => { } };
1750 }
1751
1752 sub next_rev_list_entry {
1753 my $rl = shift;
1754 my $fh = $rl->{fh};
1755 my $x = $rl->{t};
1756 while (<$fh>) {
1757 if (/^commit ($sha1)$/o) {
1758 if ($x->{c}) {
1759 $rl->{t} = { c => $1 };
1760 return $x;
1761 } else {
1762 $x->{c} = $1;
1763 }
1764 } elsif (/^parent ($sha1)$/o) {
1765 $x->{p}->{$1} = 1;
1766 } elsif (s/^ //) {
1767 $x->{m} ||= '';
1768 $x->{m} .= $_;
1769 }
1770 }
1771 return ($x != $rl->{t}) ? $x : undef;
1772 }
1773
1774 # read the entire log into a temporary file (which is removed ASAP)
1775 # and store the file handle + parser state
1776 sub svn_log_raw {
1777 my (@log_args) = @_;
1778 my $log_fh = IO::File->new_tmpfile or croak $!;
1779 my $pid = fork;
1780 defined $pid or croak $!;
1781 if (!$pid) {
1782 open STDOUT, '>&', $log_fh or croak $!;
1783 exec (qw(svn log), @log_args) or croak $!
1784 }
1785 waitpid $pid, 0;
1786 croak $? if $?;
1787 seek $log_fh, 0, 0 or croak $!;
1788 return { state => 'sep', fh => $log_fh };
1789 }
1790
1791 sub next_log_entry {
1792 my $log = shift; # retval of svn_log_raw()
1793 my $ret = undef;
1794 my $fh = $log->{fh};
1795
1796 while (<$fh>) {
1797 chomp;
1798 if (/^\-{72}$/) {
1799 if ($log->{state} eq 'msg') {
1800 if ($ret->{lines}) {
1801 $ret->{msg} .= $_."\n";
1802 unless(--$ret->{lines}) {
1803 $log->{state} = 'sep';
1804 }
1805 } else {
1806 croak "Log parse error at: $_\n",
1807 $ret->{revision},
1808 "\n";
1809 }
1810 next;
1811 }
1812 if ($log->{state} ne 'sep') {
1813 croak "Log parse error at: $_\n",
1814 "state: $log->{state}\n",
1815 $ret->{revision},
1816 "\n";
1817 }
1818 $log->{state} = 'rev';
1819
1820 # if we have an empty log message, put something there:
1821 if ($ret) {
1822 $ret->{msg} ||= "\n";
1823 delete $ret->{lines};
1824 return $ret;
1825 }
1826 next;
1827 }
1828 if ($log->{state} eq 'rev' && s/^r(\d+)\s*\|\s*//) {
1829 my $rev = $1;
1830 my ($author, $date, $lines) = split(/\s*\|\s*/, $_, 3);
1831 ($lines) = ($lines =~ /(\d+)/);
1832 $date = '1970-01-01 00:00:00 +0000'
1833 if ($_ignore_nodate && $date eq '(no date)');
1834 my ($Y,$m,$d,$H,$M,$S,$tz) = ($date =~
1835 /(\d{4})\-(\d\d)\-(\d\d)\s
1836 (\d\d)\:(\d\d)\:(\d\d)\s([\-\+]\d+)/x)
1837 or croak "Failed to parse date: $date\n";
1838 $ret = { revision => $rev,
1839 date => "$tz $Y-$m-$d $H:$M:$S",
1840 author => $author,
1841 lines => $lines,
1842 msg => '' };
1843 if (defined $_authors && ! defined $users{$author}) {
1844 die "Author: $author not defined in ",
1845 "$_authors file\n";
1846 }
1847 $log->{state} = 'msg_start';
1848 next;
1849 }
1850 # skip the first blank line of the message:
1851 if ($log->{state} eq 'msg_start' && /^$/) {
1852 $log->{state} = 'msg';
1853 } elsif ($log->{state} eq 'msg') {
1854 if ($ret->{lines}) {
1855 $ret->{msg} .= $_."\n";
1856 unless (--$ret->{lines}) {
1857 $log->{state} = 'sep';
1858 }
1859 } else {
1860 croak "Log parse error at: $_\n",
1861 $ret->{revision},"\n";
1862 }
1863 }
1864 }
1865 return $ret;
1866 }
1867
1868 sub svn_info {
1869 my $url = shift || $SVN_URL;
1870
1871 my $pid = open my $info_fh, '-|';
1872 defined $pid or croak $!;
1873
1874 if ($pid == 0) {
1875 exec(qw(svn info),$url) or croak $!;
1876 }
1877
1878 my $ret = {};
1879 # only single-lines seem to exist in svn info output
1880 while (<$info_fh>) {
1881 chomp $_;
1882 if (m#^([^:]+)\s*:\s*(\S.*)$#) {
1883 $ret->{$1} = $2;
1884 push @{$ret->{-order}}, $1;
1885 }
1886 }
1887 close $info_fh or croak $?;
1888 return $ret;
1889 }
1890
1891 sub sys { system(@_) == 0 or croak $? }
1892
1893 sub do_update_index {
1894 my ($z_cmd, $cmd, $no_text_base) = @_;
1895
1896 my $z = open my $p, '-|';
1897 defined $z or croak $!;
1898 unless ($z) { exec @$z_cmd or croak $! }
1899
1900 my $pid = open my $ui, '|-';
1901 defined $pid or croak $!;
1902 unless ($pid) {
1903 exec('git-update-index',"--$cmd",'-z','--stdin') or croak $!;
1904 }
1905 local $/ = "\0";
1906 while (my $x = <$p>) {
1907 chomp $x;
1908 if (!$no_text_base && lstat $x && ! -l _ &&
1909 svn_propget_base('svn:keywords', $x)) {
1910 my $mode = -x _ ? 0755 : 0644;
1911 my ($v,$d,$f) = File::Spec->splitpath($x);
1912 my $tb = File::Spec->catfile($d, '.svn', 'tmp',
1913 'text-base',"$f.svn-base");
1914 $tb =~ s#^/##;
1915 unless (-f $tb) {
1916 $tb = File::Spec->catfile($d, '.svn',
1917 'text-base',"$f.svn-base");
1918 $tb =~ s#^/##;
1919 }
1920 my @s = stat($x);
1921 unlink $x or croak $!;
1922 copy($tb, $x);
1923 chmod(($mode &~ umask), $x) or croak $!;
1924 utime $s[8], $s[9], $x;
1925 }
1926 print $ui $x,"\0";
1927 }
1928 close $ui or croak $?;
1929 }
1930
1931 sub index_changes {
1932 return if $_use_lib;
1933
1934 if (!-f "$GIT_SVN_DIR/info/exclude") {
1935 open my $fd, '>>', "$GIT_SVN_DIR/info/exclude" or croak $!;
1936 print $fd '.svn',"\n";
1937 close $fd or croak $!;
1938 }
1939 my $no_text_base = shift;
1940 do_update_index([qw/git-diff-files --name-only -z/],
1941 'remove',
1942 $no_text_base);
1943 do_update_index([qw/git-ls-files -z --others/,
1944 "--exclude-from=$GIT_SVN_DIR/info/exclude"],
1945 'add',
1946 $no_text_base);
1947 }
1948
1949 sub s_to_file {
1950 my ($str, $file, $mode) = @_;
1951 open my $fd,'>',$file or croak $!;
1952 print $fd $str,"\n" or croak $!;
1953 close $fd or croak $!;
1954 chmod ($mode &~ umask, $file) if (defined $mode);
1955 }
1956
1957 sub file_to_s {
1958 my $file = shift;
1959 open my $fd,'<',$file or croak "$!: file: $file\n";
1960 local $/;
1961 my $ret = <$fd>;
1962 close $fd or croak $!;
1963 $ret =~ s/\s*$//s;
1964 return $ret;
1965 }
1966
1967 sub assert_revision_unknown {
1968 my $r = shift;
1969 if (my $c = revdb_get($REVDB, $r)) {
1970 croak "$r = $c already exists! Why are we refetching it?";
1971 }
1972 }
1973
1974 sub trees_eq {
1975 my ($x, $y) = @_;
1976 my @x = safe_qx('git-cat-file','commit',$x);
1977 my @y = safe_qx('git-cat-file','commit',$y);
1978 if (($y[0] ne $x[0]) || $x[0] !~ /^tree $sha1\n$/
1979 || $y[0] !~ /^tree $sha1\n$/) {
1980 print STDERR "Trees not equal: $y[0] != $x[0]\n";
1981 return 0
1982 }
1983 return 1;
1984 }
1985
1986 sub git_commit {
1987 my ($log_msg, @parents) = @_;
1988 assert_revision_unknown($log_msg->{revision});
1989 map_tree_joins() if (@_branch_from && !%tree_map);
1990
1991 my (@tmp_parents, @exec_parents, %seen_parent);
1992 if (my $lparents = $log_msg->{parents}) {
1993 @tmp_parents = @$lparents
1994 }
1995 # commit parents can be conditionally bound to a particular
1996 # svn revision via: "svn_revno=commit_sha1", filter them out here:
1997 foreach my $p (@parents) {
1998 next unless defined $p;
1999 if ($p =~ /^(\d+)=($sha1_short)$/o) {
2000 if ($1 == $log_msg->{revision}) {
2001 push @tmp_parents, $2;
2002 }
2003 } else {
2004 push @tmp_parents, $p if $p =~ /$sha1_short/o;
2005 }
2006 }
2007 my $tree = $log_msg->{tree};
2008 if (!defined $tree) {
2009 my $index = set_index($GIT_SVN_INDEX);
2010 index_changes();
2011 chomp($tree = `git-write-tree`);
2012 croak $? if $?;
2013 restore_index($index);
2014 }
2015
2016 # just in case we clobber the existing ref, we still want that ref
2017 # as our parent:
2018 if (my $cur = eval { file_to_s("$GIT_DIR/refs/remotes/$GIT_SVN") }) {
2019 push @tmp_parents, $cur;
2020 }
2021
2022 if (exists $tree_map{$tree}) {
2023 foreach my $p (@{$tree_map{$tree}}) {
2024 my $skip;
2025 foreach (@tmp_parents) {
2026 # see if a common parent is found
2027 my $mb = eval {
2028 safe_qx('git-merge-base', $_, $p)
2029 };
2030 next if ($@ || $?);
2031 $skip = 1;
2032 last;
2033 }
2034 next if $skip;
2035 my ($url_p, $r_p, $uuid_p) = cmt_metadata($p);
2036 next if (($SVN_UUID eq $uuid_p) &&
2037 ($log_msg->{revision} > $r_p));
2038 next if (defined $url_p && defined $SVN_URL &&
2039 ($SVN_UUID eq $uuid_p) &&
2040 ($url_p eq $SVN_URL));
2041 push @tmp_parents, $p;
2042 }
2043 }
2044 foreach (@tmp_parents) {
2045 next if $seen_parent{$_};
2046 $seen_parent{$_} = 1;
2047 push @exec_parents, $_;
2048 # MAXPARENT is defined to 16 in commit-tree.c:
2049 last if @exec_parents > 16;
2050 }
2051
2052 set_commit_env($log_msg);
2053 my @exec = ('git-commit-tree', $tree);
2054 push @exec, '-p', $_ foreach @exec_parents;
2055 defined(my $pid = open3(my $msg_fh, my $out_fh, '>&STDERR', @exec))
2056 or croak $!;
2057 print $msg_fh $log_msg->{msg} or croak $!;
2058 unless ($_no_metadata) {
2059 print $msg_fh "\ngit-svn-id: $SVN_URL\@$log_msg->{revision}",
2060 " $SVN_UUID\n" or croak $!;
2061 }
2062 $msg_fh->flush == 0 or croak $!;
2063 close $msg_fh or croak $!;
2064 chomp(my $commit = do { local $/; <$out_fh> });
2065 close $out_fh or croak $!;
2066 waitpid $pid, 0;
2067 croak $? if $?;
2068 if ($commit !~ /^$sha1$/o) {
2069 die "Failed to commit, invalid sha1: $commit\n";
2070 }
2071 sys('git-update-ref',"refs/remotes/$GIT_SVN",$commit);
2072 revdb_set($REVDB, $log_msg->{revision}, $commit);
2073
2074 # this output is read via pipe, do not change:
2075 print "r$log_msg->{revision} = $commit\n";
2076 check_repack();
2077 return $commit;
2078 }
2079
2080 sub check_repack {
2081 if ($_repack && (--$_repack_nr == 0)) {
2082 $_repack_nr = $_repack;
2083 sys("git repack $_repack_flags");
2084 }
2085 }
2086
2087 sub set_commit_env {
2088 my ($log_msg) = @_;
2089 my $author = $log_msg->{author};
2090 if (!defined $author || length $author == 0) {
2091 $author = '(no author)';
2092 }
2093 my ($name,$email) = defined $users{$author} ? @{$users{$author}}
2094 : ($author,"$author\@$SVN_UUID");
2095 $ENV{GIT_AUTHOR_NAME} = $ENV{GIT_COMMITTER_NAME} = $name;
2096 $ENV{GIT_AUTHOR_EMAIL} = $ENV{GIT_COMMITTER_EMAIL} = $email;
2097 $ENV{GIT_AUTHOR_DATE} = $ENV{GIT_COMMITTER_DATE} = $log_msg->{date};
2098 }
2099
2100 sub apply_mod_line_blob {
2101 my $m = shift;
2102 if ($m->{mode_b} =~ /^120/) {
2103 blob_to_symlink($m->{sha1_b}, $m->{file_b});
2104 } else {
2105 blob_to_file($m->{sha1_b}, $m->{file_b});
2106 }
2107 }
2108
2109 sub blob_to_symlink {
2110 my ($blob, $link) = @_;
2111 defined $link or croak "\$link not defined!\n";
2112 croak "Not a sha1: $blob\n" unless $blob =~ /^$sha1$/o;
2113 if (-l $link || -f _) {
2114 unlink $link or croak $!;
2115 }
2116
2117 my $dest = `git-cat-file blob $blob`; # no newline, so no chomp
2118 symlink $dest, $link or croak $!;
2119 }
2120
2121 sub blob_to_file {
2122 my ($blob, $file) = @_;
2123 defined $file or croak "\$file not defined!\n";
2124 croak "Not a sha1: $blob\n" unless $blob =~ /^$sha1$/o;
2125 if (-l $file || -f _) {
2126 unlink $file or croak $!;
2127 }
2128
2129 open my $blob_fh, '>', $file or croak "$!: $file\n";
2130 my $pid = fork;
2131 defined $pid or croak $!;
2132
2133 if ($pid == 0) {
2134 open STDOUT, '>&', $blob_fh or croak $!;
2135 exec('git-cat-file','blob',$blob) or croak $!;
2136 }
2137 waitpid $pid, 0;
2138 croak $? if $?;
2139
2140 close $blob_fh or croak $!;
2141 }
2142
2143 sub safe_qx {
2144 my $pid = open my $child, '-|';
2145 defined $pid or croak $!;
2146 if ($pid == 0) {
2147 exec(@_) or croak $!;
2148 }
2149 my @ret = (<$child>);
2150 close $child or croak $?;
2151 die $? if $?; # just in case close didn't error out
2152 return wantarray ? @ret : join('',@ret);
2153 }
2154
2155 sub svn_compat_check {
2156 if ($_follow_parent) {
2157 print STDERR 'E: --follow-parent functionality is only ',
2158 "available when SVN libraries are used\n";
2159 exit 1;
2160 }
2161 my @co_help = safe_qx(qw(svn co -h));
2162 unless (grep /ignore-externals/,@co_help) {
2163 print STDERR "W: Installed svn version does not support ",
2164 "--ignore-externals\n";
2165 $_no_ignore_ext = 1;
2166 }
2167 if (grep /usage: checkout URL\[\@REV\]/,@co_help) {
2168 $_svn_co_url_revs = 1;
2169 }
2170 if (grep /\[TARGET\[\@REV\]\.\.\.\]/, `svn propget -h`) {
2171 $_svn_pg_peg_revs = 1;
2172 }
2173
2174 # I really, really hope nobody hits this...
2175 unless (grep /stop-on-copy/, (safe_qx(qw(svn log -h)))) {
2176 print STDERR <<'';
2177 W: The installed svn version does not support the --stop-on-copy flag in
2178 the log command.
2179 Lets hope the directory you're tracking is not a branch or tag
2180 and was never moved within the repository...
2181
2182 $_no_stop_copy = 1;
2183 }
2184 }
2185
2186 # *sigh*, new versions of svn won't honor -r<rev> without URL@<rev>,
2187 # (and they won't honor URL@<rev> without -r<rev>, too!)
2188 sub svn_cmd_checkout {
2189 my ($url, $rev, $dir) = @_;
2190 my @cmd = ('svn','co', "-r$rev");
2191 push @cmd, '--ignore-externals' unless $_no_ignore_ext;
2192 $url .= "\@$rev" if $_svn_co_url_revs;
2193 sys(@cmd, $url, $dir);
2194 }
2195
2196 sub check_upgrade_needed {
2197 if (!-r $REVDB) {
2198 -d $GIT_SVN_DIR or mkpath([$GIT_SVN_DIR]);
2199 open my $fh, '>>',$REVDB or croak $!;
2200 close $fh;
2201 }
2202 my $old = eval {
2203 my $pid = open my $child, '-|';
2204 defined $pid or croak $!;
2205 if ($pid == 0) {
2206 close STDERR;
2207 exec('git-rev-parse',"$GIT_SVN-HEAD") or croak $!;
2208 }
2209 my @ret = (<$child>);
2210 close $child or croak $?;
2211 die $? if $?; # just in case close didn't error out
2212 return wantarray ? @ret : join('',@ret);
2213 };
2214 return unless $old;
2215 my $head = eval { safe_qx('git-rev-parse',"refs/remotes/$GIT_SVN") };
2216 if ($@ || !$head) {
2217 print STDERR "Please run: $0 rebuild --upgrade\n";
2218 exit 1;
2219 }
2220 }
2221
2222 # fills %tree_map with a reverse mapping of trees to commits. Useful
2223 # for finding parents to commit on.
2224 sub map_tree_joins {
2225 my %seen;
2226 foreach my $br (@_branch_from) {
2227 my $pid = open my $pipe, '-|';
2228 defined $pid or croak $!;
2229 if ($pid == 0) {
2230 exec(qw(git-rev-list --topo-order --pretty=raw), $br)
2231 or croak $!;
2232 }
2233 while (<$pipe>) {
2234 if (/^commit ($sha1)$/o) {
2235 my $commit = $1;
2236
2237 # if we've seen a commit,
2238 # we've seen its parents
2239 last if $seen{$commit};
2240 my ($tree) = (<$pipe> =~ /^tree ($sha1)$/o);
2241 unless (defined $tree) {
2242 die "Failed to parse commit $commit\n";
2243 }
2244 push @{$tree_map{$tree}}, $commit;
2245 $seen{$commit} = 1;
2246 }
2247 }
2248 close $pipe; # we could be breaking the pipe early
2249 }
2250 }
2251
2252 sub load_all_refs {
2253 if (@_branch_from) {
2254 print STDERR '--branch|-b parameters are ignored when ',
2255 "--branch-all-refs|-B is passed\n";
2256 }
2257
2258 # don't worry about rev-list on non-commit objects/tags,
2259 # it shouldn't blow up if a ref is a blob or tree...
2260 chomp(@_branch_from = `git-rev-parse --symbolic --all`);
2261 }
2262
2263 # '<svn username> = real-name <email address>' mapping based on git-svnimport:
2264 sub load_authors {
2265 open my $authors, '<', $_authors or die "Can't open $_authors $!\n";
2266 while (<$authors>) {
2267 chomp;
2268 next unless /^(\S+?|\(no author\))\s*=\s*(.+?)\s*<(.+)>\s*$/;
2269 my ($user, $name, $email) = ($1, $2, $3);
2270 $users{$user} = [$name, $email];
2271 }
2272 close $authors or croak $!;
2273 }
2274
2275 sub rload_authors {
2276 open my $authors, '<', $_authors or die "Can't open $_authors $!\n";
2277 while (<$authors>) {
2278 chomp;
2279 next unless /^(\S+?)\s*=\s*(.+?)\s*<(.+)>\s*$/;
2280 my ($user, $name, $email) = ($1, $2, $3);
2281 $rusers{"$name <$email>"} = $user;
2282 }
2283 close $authors or croak $!;
2284 }
2285
2286 sub svn_propget_base {
2287 my ($p, $f) = @_;
2288 $f .= '@BASE' if $_svn_pg_peg_revs;
2289 return safe_qx(qw/svn propget/, $p, $f);
2290 }
2291
2292 sub git_svn_each {
2293 my $sub = shift;
2294 foreach (`git-rev-parse --symbolic --all`) {
2295 next unless s#^refs/remotes/##;
2296 chomp $_;
2297 next unless -f "$GIT_DIR/svn/$_/info/url";
2298 &$sub($_);
2299 }
2300 }
2301
2302 sub migrate_revdb {
2303 git_svn_each(sub {
2304 my $id = shift;
2305 defined(my $pid = fork) or croak $!;
2306 if (!$pid) {
2307 $GIT_SVN = $ENV{GIT_SVN_ID} = $id;
2308 init_vars();
2309 exit 0 if -r $REVDB;
2310 print "Upgrading svn => git mapping...\n";
2311 -d $GIT_SVN_DIR or mkpath([$GIT_SVN_DIR]);
2312 open my $fh, '>>',$REVDB or croak $!;
2313 close $fh;
2314 rebuild();
2315 print "Done upgrading. You may now delete the ",
2316 "deprecated $GIT_SVN_DIR/revs directory\n";
2317 exit 0;
2318 }
2319 waitpid $pid, 0;
2320 croak $? if $?;
2321 });
2322 }
2323
2324 sub migration_check {
2325 migrate_revdb() unless (-e $REVDB);
2326 return if (-d "$GIT_DIR/svn" || !-d $GIT_DIR);
2327 print "Upgrading repository...\n";
2328 unless (-d "$GIT_DIR/svn") {
2329 mkdir "$GIT_DIR/svn" or croak $!;
2330 }
2331 print "Data from a previous version of git-svn exists, but\n\t",
2332 "$GIT_SVN_DIR\n\t(required for this version ",
2333 "($VERSION) of git-svn) does not.\n";
2334
2335 foreach my $x (`git-rev-parse --symbolic --all`) {
2336 next unless $x =~ s#^refs/remotes/##;
2337 chomp $x;
2338 next unless -f "$GIT_DIR/$x/info/url";
2339 my $u = eval { file_to_s("$GIT_DIR/$x/info/url") };
2340 next unless $u;
2341 my $dn = dirname("$GIT_DIR/svn/$x");
2342 mkpath([$dn]) unless -d $dn;
2343 rename "$GIT_DIR/$x", "$GIT_DIR/svn/$x" or croak "$!: $x";
2344 }
2345 migrate_revdb() if (-d $GIT_SVN_DIR && !-w $REVDB);
2346 print "Done upgrading.\n";
2347 }
2348
2349 sub find_rev_before {
2350 my ($r, $id, $eq_ok) = @_;
2351 my $f = "$GIT_DIR/svn/$id/.rev_db";
2352 return (undef,undef) unless -r $f;
2353 --$r unless $eq_ok;
2354 while ($r > 0) {
2355 if (my $c = revdb_get($f, $r)) {
2356 return ($r, $c);
2357 }
2358 --$r;
2359 }
2360 return (undef, undef);
2361 }
2362
2363 sub init_vars {
2364 $GIT_SVN ||= $ENV{GIT_SVN_ID} || 'git-svn';
2365 $GIT_SVN_DIR = "$GIT_DIR/svn/$GIT_SVN";
2366 $REVDB = "$GIT_SVN_DIR/.rev_db";
2367 $GIT_SVN_INDEX = "$GIT_SVN_DIR/index";
2368 $SVN_URL = undef;
2369 $SVN_WC = "$GIT_SVN_DIR/tree";
2370 %tree_map = ();
2371 }
2372
2373 # convert GetOpt::Long specs for use by git-repo-config
2374 sub read_repo_config {
2375 return unless -d $GIT_DIR;
2376 my $opts = shift;
2377 foreach my $o (keys %$opts) {
2378 my $v = $opts->{$o};
2379 my ($key) = ($o =~ /^([a-z\-]+)/);
2380 $key =~ s/-//g;
2381 my $arg = 'git-repo-config';
2382 $arg .= ' --int' if ($o =~ /[:=]i$/);
2383 $arg .= ' --bool' if ($o !~ /[:=][sfi]$/);
2384 if (ref $v eq 'ARRAY') {
2385 chomp(my @tmp = `$arg --get-all svn.$key`);
2386 @$v = @tmp if @tmp;
2387 } else {
2388 chomp(my $tmp = `$arg --get svn.$key`);
2389 if ($tmp && !($arg =~ / --bool / && $tmp eq 'false')) {
2390 $$v = $tmp;
2391 }
2392 }
2393 }
2394 }
2395
2396 sub set_default_vals {
2397 if (defined $_repack) {
2398 $_repack = 1000 if ($_repack <= 0);
2399 $_repack_nr = $_repack;
2400 $_repack_flags ||= '-d';
2401 }
2402 }
2403
2404 sub read_grafts {
2405 my $gr_file = shift;
2406 my ($grafts, $comments) = ({}, {});
2407 if (open my $fh, '<', $gr_file) {
2408 my @tmp;
2409 while (<$fh>) {
2410 if (/^($sha1)\s+/) {
2411 my $c = $1;
2412 if (@tmp) {
2413 @{$comments->{$c}} = @tmp;
2414 @tmp = ();
2415 }
2416 foreach my $p (split /\s+/, $_) {
2417 $grafts->{$c}->{$p} = 1;
2418 }
2419 } else {
2420 push @tmp, $_;
2421 }
2422 }
2423 close $fh or croak $!;
2424 @{$comments->{'END'}} = @tmp if @tmp;
2425 }
2426 return ($grafts, $comments);
2427 }
2428
2429 sub write_grafts {
2430 my ($grafts, $comments, $gr_file) = @_;
2431
2432 open my $fh, '>', $gr_file or croak $!;
2433 foreach my $c (sort keys %$grafts) {
2434 if ($comments->{$c}) {
2435 print $fh $_ foreach @{$comments->{$c}};
2436 }
2437 my $p = $grafts->{$c};
2438 my %x; # real parents
2439 delete $p->{$c}; # commits are not self-reproducing...
2440 my $pid = open my $ch, '-|';
2441 defined $pid or croak $!;
2442 if (!$pid) {
2443 exec(qw/git-cat-file commit/, $c) or croak $!;
2444 }
2445 while (<$ch>) {
2446 if (/^parent ($sha1)/) {
2447 $x{$1} = $p->{$1} = 1;
2448 } else {
2449 last unless /^\S/;
2450 }
2451 }
2452 close $ch; # breaking the pipe
2453
2454 # if real parents are the only ones in the grafts, drop it
2455 next if join(' ',sort keys %$p) eq join(' ',sort keys %x);
2456
2457 my (@ip, @jp, $mb);
2458 my %del = %x;
2459 @ip = @jp = keys %$p;
2460 foreach my $i (@ip) {
2461 next if $del{$i} || $p->{$i} == 2;
2462 foreach my $j (@jp) {
2463 next if $i eq $j || $del{$j} || $p->{$j} == 2;
2464 $mb = eval { safe_qx('git-merge-base',$i,$j) };
2465 next unless $mb;
2466 chomp $mb;
2467 next if $x{$mb};
2468 if ($mb eq $j) {
2469 delete $p->{$i};
2470 $del{$i} = 1;
2471 } elsif ($mb eq $i) {
2472 delete $p->{$j};
2473 $del{$j} = 1;
2474 }
2475 }
2476 }
2477
2478 # if real parents are the only ones in the grafts, drop it
2479 next if join(' ',sort keys %$p) eq join(' ',sort keys %x);
2480
2481 print $fh $c, ' ', join(' ', sort keys %$p),"\n";
2482 }
2483 if ($comments->{'END'}) {
2484 print $fh $_ foreach @{$comments->{'END'}};
2485 }
2486 close $fh or croak $!;
2487 }
2488
2489 sub read_url_paths_all {
2490 my ($l_map, $pfx, $p) = @_;
2491 my @dir;
2492 foreach (<$p/*>) {
2493 if (-r "$_/info/url") {
2494 $pfx .= '/' if $pfx && $pfx !~ m!/$!;
2495 my $id = $pfx . basename $_;
2496 my $url = file_to_s("$_/info/url");
2497 my ($u, $p) = repo_path_split($url);
2498 $l_map->{$u}->{$p} = $id;
2499 } elsif (-d $_) {
2500 push @dir, $_;
2501 }
2502 }
2503 foreach (@dir) {
2504 my $x = $_;
2505 $x =~ s!^\Q$GIT_DIR\E/svn/!!o;
2506 read_url_paths_all($l_map, $x, $_);
2507 }
2508 }
2509
2510 # this one only gets ids that have been imported, not new ones
2511 sub read_url_paths {
2512 my $l_map = {};
2513 git_svn_each(sub { my $x = shift;
2514 my $url = file_to_s("$GIT_DIR/svn/$x/info/url");
2515 my ($u, $p) = repo_path_split($url);
2516 $l_map->{$u}->{$p} = $x;
2517 });
2518 return $l_map;
2519 }
2520
2521 sub extract_metadata {
2522 my $id = shift or return (undef, undef, undef);
2523 my ($url, $rev, $uuid) = ($id =~ /^git-svn-id:\s(\S+?)\@(\d+)
2524 \s([a-f\d\-]+)$/x);
2525 if (!defined $rev || !$uuid || !$url) {
2526 # some of the original repositories I made had
2527 # identifiers like this:
2528 ($rev, $uuid) = ($id =~/^git-svn-id:\s(\d+)\@([a-f\d\-]+)/);
2529 }
2530 return ($url, $rev, $uuid);
2531 }
2532
2533 sub cmt_metadata {
2534 return extract_metadata((grep(/^git-svn-id: /,
2535 safe_qx(qw/git-cat-file commit/, shift)))[-1]);
2536 }
2537
2538 sub get_commit_time {
2539 my $cmt = shift;
2540 defined(my $pid = open my $fh, '-|') or croak $!;
2541 if (!$pid) {
2542 exec qw/git-rev-list --pretty=raw -n1/, $cmt or croak $!;
2543 }
2544 while (<$fh>) {
2545 /^committer\s(?:.+) (\d+) ([\-\+]?\d+)$/ or next;
2546 my ($s, $tz) = ($1, $2);
2547 if ($tz =~ s/^\+//) {
2548 $s += tz_to_s_offset($tz);
2549 } elsif ($tz =~ s/^\-//) {
2550 $s -= tz_to_s_offset($tz);
2551 }
2552 close $fh;
2553 return $s;
2554 }
2555 die "Can't get commit time for commit: $cmt\n";
2556 }
2557
2558 sub tz_to_s_offset {
2559 my ($tz) = @_;
2560 $tz =~ s/(\d\d)$//;
2561 return ($1 * 60) + ($tz * 3600);
2562 }
2563
2564 # adapted from pager.c
2565 sub config_pager {
2566 $_pager ||= $ENV{GIT_PAGER} || $ENV{PAGER};
2567 if (!defined $_pager) {
2568 $_pager = 'less';
2569 } elsif (length $_pager == 0 || $_pager eq 'cat') {
2570 $_pager = undef;
2571 }
2572 }
2573
2574 sub run_pager {
2575 return unless -t *STDOUT;
2576 pipe my $rfd, my $wfd or return;
2577 defined(my $pid = fork) or croak $!;
2578 if (!$pid) {
2579 open STDOUT, '>&', $wfd or croak $!;
2580 return;
2581 }
2582 open STDIN, '<&', $rfd or croak $!;
2583 $ENV{LESS} ||= 'FRSX';
2584 exec $_pager or croak "Can't run pager: $! ($_pager)\n";
2585 }
2586
2587 sub get_author_info {
2588 my ($dest, $author, $t, $tz) = @_;
2589 $author =~ s/(?:^\s*|\s*$)//g;
2590 $dest->{a_raw} = $author;
2591 my $_a;
2592 if ($_authors) {
2593 $_a = $rusers{$author} || undef;
2594 }
2595 if (!$_a) {
2596 ($_a) = ($author =~ /<([^>]+)\@[^>]+>$/);
2597 }
2598 $dest->{t} = $t;
2599 $dest->{tz} = $tz;
2600 $dest->{a} = $_a;
2601 # Date::Parse isn't in the standard Perl distro :(
2602 if ($tz =~ s/^\+//) {
2603 $t += tz_to_s_offset($tz);
2604 } elsif ($tz =~ s/^\-//) {
2605 $t -= tz_to_s_offset($tz);
2606 }
2607 $dest->{t_utc} = $t;
2608 }
2609
2610 sub process_commit {
2611 my ($c, $r_min, $r_max, $defer) = @_;
2612 if (defined $r_min && defined $r_max) {
2613 if ($r_min == $c->{r} && $r_min == $r_max) {
2614 show_commit($c);
2615 return 0;
2616 }
2617 return 1 if $r_min == $r_max;
2618 if ($r_min < $r_max) {
2619 # we need to reverse the print order
2620 return 0 if (defined $_limit && --$_limit < 0);
2621 push @$defer, $c;
2622 return 1;
2623 }
2624 if ($r_min != $r_max) {
2625 return 1 if ($r_min < $c->{r});
2626 return 1 if ($r_max > $c->{r});
2627 }
2628 }
2629 return 0 if (defined $_limit && --$_limit < 0);
2630 show_commit($c);
2631 return 1;
2632 }
2633
2634 sub show_commit {
2635 my $c = shift;
2636 if ($_oneline) {
2637 my $x = "\n";
2638 if (my $l = $c->{l}) {
2639 while ($l->[0] =~ /^\s*$/) { shift @$l }
2640 $x = $l->[0];
2641 }
2642 $_l_fmt ||= 'A' . length($c->{r});
2643 print 'r',pack($_l_fmt, $c->{r}),' | ';
2644 print "$c->{c} | " if $_show_commit;
2645 print $x;
2646 } else {
2647 show_commit_normal($c);
2648 }
2649 }
2650
2651 sub show_commit_changed_paths {
2652 my ($c) = @_;
2653 return unless $c->{changed};
2654 print "Changed paths:\n", @{$c->{changed}};
2655 }
2656
2657 sub show_commit_normal {
2658 my ($c) = @_;
2659 print '-' x72, "\nr$c->{r} | ";
2660 print "$c->{c} | " if $_show_commit;
2661 print "$c->{a} | ", strftime("%Y-%m-%d %H:%M:%S %z (%a, %d %b %Y)",
2662 localtime($c->{t_utc})), ' | ';
2663 my $nr_line = 0;
2664
2665 if (my $l = $c->{l}) {
2666 while ($l->[$#$l] eq "\n" && $#$l > 0
2667 && $l->[($#$l - 1)] eq "\n") {
2668 pop @$l;
2669 }
2670 $nr_line = scalar @$l;
2671 if (!$nr_line) {
2672 print "1 line\n\n\n";
2673 } else {
2674 if ($nr_line == 1) {
2675 $nr_line = '1 line';
2676 } else {
2677 $nr_line .= ' lines';
2678 }
2679 print $nr_line, "\n";
2680 show_commit_changed_paths($c);
2681 print "\n";
2682 print $_ foreach @$l;
2683 }
2684 } else {
2685 print "1 line\n";
2686 show_commit_changed_paths($c);
2687 print "\n";
2688
2689 }
2690 foreach my $x (qw/raw diff/) {
2691 if ($c->{$x}) {
2692 print "\n";
2693 print $_ foreach @{$c->{$x}}
2694 }
2695 }
2696 }
2697
2698 sub libsvn_load {
2699 return unless $_use_lib;
2700 $_use_lib = eval {
2701 require SVN::Core;
2702 if ($SVN::Core::VERSION lt '1.1.0') {
2703 die "Need SVN::Core 1.1.0 or better ",
2704 "(got $SVN::Core::VERSION) ",
2705 "Falling back to command-line svn\n";
2706 }
2707 require SVN::Ra;
2708 require SVN::Delta;
2709 push @SVN::Git::Editor::ISA, 'SVN::Delta::Editor';
2710 push @SVN::Git::Fetcher::ISA, 'SVN::Delta::Editor';
2711 *SVN::Git::Fetcher::process_rm = *process_rm;
2712 *SVN::Git::Fetcher::safe_qx = *safe_qx;
2713 my $kill_stupid_warnings = $SVN::Node::none.$SVN::Node::file.
2714 $SVN::Node::dir.$SVN::Node::unknown.
2715 $SVN::Node::none.$SVN::Node::file.
2716 $SVN::Node::dir.$SVN::Node::unknown.
2717 $SVN::Auth::SSL::CNMISMATCH.
2718 $SVN::Auth::SSL::NOTYETVALID.
2719 $SVN::Auth::SSL::EXPIRED.
2720 $SVN::Auth::SSL::UNKNOWNCA.
2721 $SVN::Auth::SSL::OTHER;
2722 1;
2723 };
2724 }
2725
2726 sub _simple_prompt {
2727 my ($cred, $realm, $default_username, $may_save, $pool) = @_;
2728 $may_save = undef if $_no_auth_cache;
2729 $default_username = $_username if defined $_username;
2730 if (defined $default_username && length $default_username) {
2731 if (defined $realm && length $realm) {
2732 print "Authentication realm: $realm\n";
2733 }
2734 $cred->username($default_username);
2735 } else {
2736 _username_prompt($cred, $realm, $may_save, $pool);
2737 }
2738 $cred->password(_read_password("Password for '" .
2739 $cred->username . "': ", $realm));
2740 $cred->may_save($may_save);
2741 $SVN::_Core::SVN_NO_ERROR;
2742 }
2743
2744 sub _ssl_server_trust_prompt {
2745 my ($cred, $realm, $failures, $cert_info, $may_save, $pool) = @_;
2746 $may_save = undef if $_no_auth_cache;
2747 print "Error validating server certificate for '$realm':\n";
2748 if ($failures & $SVN::Auth::SSL::UNKNOWNCA) {
2749 print " - The certificate is not issued by a trusted ",
2750 "authority. Use the\n",
2751 " fingerprint to validate the certificate manually!\n";
2752 }
2753 if ($failures & $SVN::Auth::SSL::CNMISMATCH) {
2754 print " - The certificate hostname does not match.\n";
2755 }
2756 if ($failures & $SVN::Auth::SSL::NOTYETVALID) {
2757 print " - The certificate is not yet valid.\n";
2758 }
2759 if ($failures & $SVN::Auth::SSL::EXPIRED) {
2760 print " - The certificate has expired.\n";
2761 }
2762 if ($failures & $SVN::Auth::SSL::OTHER) {
2763 print " - The certificate has an unknown error.\n";
2764 }
2765 printf( "Certificate information:\n".
2766 " - Hostname: %s\n".
2767 " - Valid: from %s until %s\n".
2768 " - Issuer: %s\n".
2769 " - Fingerprint: %s\n",
2770 map $cert_info->$_, qw(hostname valid_from valid_until
2771 issuer_dname fingerprint) );
2772 my $choice;
2773 prompt:
2774 print $may_save ?
2775 "(R)eject, accept (t)emporarily or accept (p)ermanently? " :
2776 "(R)eject or accept (t)emporarily? ";
2777 $choice = lc(substr(<STDIN> || 'R', 0, 1));
2778 if ($choice =~ /^t$/i) {
2779 $cred->may_save(undef);
2780 } elsif ($choice =~ /^r$/i) {
2781 return -1;
2782 } elsif ($may_save && $choice =~ /^p$/i) {
2783 $cred->may_save($may_save);
2784 } else {
2785 goto prompt;
2786 }
2787 $cred->accepted_failures($failures);
2788 $SVN::_Core::SVN_NO_ERROR;
2789 }
2790
2791 sub _ssl_client_cert_prompt {
2792 my ($cred, $realm, $may_save, $pool) = @_;
2793 $may_save = undef if $_no_auth_cache;
2794 print "Client certificate filename: ";
2795 chomp(my $filename = <STDIN>);
2796 $cred->cert_file($filename);
2797 $cred->may_save($may_save);
2798 $SVN::_Core::SVN_NO_ERROR;
2799 }
2800
2801 sub _ssl_client_cert_pw_prompt {
2802 my ($cred, $realm, $may_save, $pool) = @_;
2803 $may_save = undef if $_no_auth_cache;
2804 $cred->password(_read_password("Password: ", $realm));
2805 $cred->may_save($may_save);
2806 $SVN::_Core::SVN_NO_ERROR;
2807 }
2808
2809 sub _username_prompt {
2810 my ($cred, $realm, $may_save, $pool) = @_;
2811 $may_save = undef if $_no_auth_cache;
2812 if (defined $realm && length $realm) {
2813 print "Authentication realm: $realm\n";
2814 }
2815 my $username;
2816 if (defined $_username) {
2817 $username = $_username;
2818 } else {
2819 print "Username: ";
2820 chomp($username = <STDIN>);
2821 }
2822 $cred->username($username);
2823 $cred->may_save($may_save);
2824 $SVN::_Core::SVN_NO_ERROR;
2825 }
2826
2827 sub _read_password {
2828 my ($prompt, $realm) = @_;
2829 print $prompt;
2830 require Term::ReadKey;
2831 Term::ReadKey::ReadMode('noecho');
2832 my $password = '';
2833 while (defined(my $key = Term::ReadKey::ReadKey(0))) {
2834 last if $key =~ /[\012\015]/; # \n\r
2835 $password .= $key;
2836 }
2837 Term::ReadKey::ReadMode('restore');
2838 print "\n";
2839 $password;
2840 }
2841
2842 sub libsvn_connect {
2843 my ($url) = @_;
2844 SVN::_Core::svn_config_ensure($_config_dir, undef);
2845 my ($baton, $callbacks) = SVN::Core::auth_open_helper([
2846 SVN::Client::get_simple_provider(),
2847 SVN::Client::get_ssl_server_trust_file_provider(),
2848 SVN::Client::get_simple_prompt_provider(
2849 \&_simple_prompt, 2),
2850 SVN::Client::get_ssl_client_cert_prompt_provider(
2851 \&_ssl_client_cert_prompt, 2),
2852 SVN::Client::get_ssl_client_cert_pw_prompt_provider(
2853 \&_ssl_client_cert_pw_prompt, 2),
2854 SVN::Client::get_username_provider(),
2855 SVN::Client::get_ssl_server_trust_prompt_provider(
2856 \&_ssl_server_trust_prompt),
2857 SVN::Client::get_username_prompt_provider(
2858 \&_username_prompt, 2),
2859 ]);
2860 my $config = SVN::Core::config_get_config($_config_dir);
2861 my $ra = SVN::Ra->new(url => $url, auth => $baton,
2862 config => $config,
2863 pool => SVN::Pool->new,
2864 auth_provider_callbacks => $callbacks);
2865
2866 my $df = $ENV{GIT_SVN_DELTA_FETCH};
2867 if (defined $df) {
2868 $_xfer_delta = $df;
2869 } else {
2870 $_xfer_delta = ($url =~ m#^file://#) ? undef : 1;
2871 }
2872 $ra->{svn_path} = $url;
2873 $ra->{repos_root} = $ra->get_repos_root;
2874 $ra->{svn_path} =~ s#^\Q$ra->{repos_root}\E/*##;
2875 push @repo_path_split_cache, qr/^(\Q$ra->{repos_root}\E)/;
2876 return $ra;
2877 }
2878
2879 sub libsvn_dup_ra {
2880 my ($ra) = @_;
2881 SVN::Ra->new(map { $_ => $ra->{$_} } qw/config url
2882 auth auth_provider_callbacks repos_root svn_path/);
2883 }
2884
2885 sub libsvn_get_file {
2886 my ($gui, $f, $rev, $chg) = @_;
2887 $f =~ s#^/##;
2888 print "\t$chg\t$f\n" unless $_q;
2889
2890 my ($hash, $pid, $in, $out);
2891 my $pool = SVN::Pool->new;
2892 defined($pid = open3($in, $out, '>&STDERR',
2893 qw/git-hash-object -w --stdin/)) or croak $!;
2894 # redirect STDOUT for SVN 1.1.x compatibility
2895 open my $stdout, '>&', \*STDOUT or croak $!;
2896 open STDOUT, '>&', $in or croak $!;
2897 my ($r, $props) = $SVN->get_file($f, $rev, \*STDOUT, $pool);
2898 $in->flush == 0 or croak $!;
2899 open STDOUT, '>&', $stdout or croak $!;
2900 close $in or croak $!;
2901 close $stdout or croak $!;
2902 $pool->clear;
2903 chomp($hash = do { local $/; <$out> });
2904 close $out or croak $!;
2905 waitpid $pid, 0;
2906 $hash =~ /^$sha1$/o or die "not a sha1: $hash\n";
2907
2908 my $mode = exists $props->{'svn:executable'} ? '100755' : '100644';
2909 if (exists $props->{'svn:special'}) {
2910 $mode = '120000';
2911 my $link = `git-cat-file blob $hash`;
2912 $link =~ s/^link // or die "svn:special file with contents: <",
2913 $link, "> is not understood\n";
2914 defined($pid = open3($in, $out, '>&STDERR',
2915 qw/git-hash-object -w --stdin/)) or croak $!;
2916 print $in $link;
2917 $in->flush == 0 or croak $!;
2918 close $in or croak $!;
2919 chomp($hash = do { local $/; <$out> });
2920 close $out or croak $!;
2921 waitpid $pid, 0;
2922 $hash =~ /^$sha1$/o or die "not a sha1: $hash\n";
2923 }
2924 print $gui $mode,' ',$hash,"\t",$f,"\0" or croak $!;
2925 }
2926
2927 sub libsvn_log_entry {
2928 my ($rev, $author, $date, $msg, $parents) = @_;
2929 my ($Y,$m,$d,$H,$M,$S) = ($date =~ /^(\d{4})\-(\d\d)\-(\d\d)T
2930 (\d\d)\:(\d\d)\:(\d\d).\d+Z$/x)
2931 or die "Unable to parse date: $date\n";
2932 if (defined $_authors && ! defined $users{$author}) {
2933 die "Author: $author not defined in $_authors file\n";
2934 }
2935 $msg = '' if ($rev == 0 && !defined $msg);
2936 return { revision => $rev, date => "+0000 $Y-$m-$d $H:$M:$S",
2937 author => $author, msg => $msg."\n", parents => $parents || [] }
2938 }
2939
2940 sub process_rm {
2941 my ($gui, $last_commit, $f, $q) = @_;
2942 # remove entire directories.
2943 if (safe_qx('git-ls-tree',$last_commit,'--',$f) =~ /^040000 tree/) {
2944 defined(my $pid = open my $ls, '-|') or croak $!;
2945 if (!$pid) {
2946 exec(qw/git-ls-tree -r --name-only -z/,
2947 $last_commit,'--',$f) or croak $!;
2948 }
2949 local $/ = "\0";
2950 while (<$ls>) {
2951 print $gui '0 ',0 x 40,"\t",$_ or croak $!;
2952 print "\tD\t$_\n" unless $q;
2953 }
2954 print "\tD\t$f/\n" unless $q;
2955 close $ls or croak $?;
2956 } else {
2957 print $gui '0 ',0 x 40,"\t",$f,"\0" or croak $!;
2958 print "\tD\t$f\n" unless $q;
2959 }
2960 }
2961
2962 sub libsvn_fetch {
2963 $_xfer_delta ? libsvn_fetch_delta(@_) : libsvn_fetch_full(@_);
2964 }
2965
2966 sub libsvn_fetch_delta {
2967 my ($last_commit, $paths, $rev, $author, $date, $msg) = @_;
2968 my $pool = SVN::Pool->new;
2969 my $ed = SVN::Git::Fetcher->new({ c => $last_commit, q => $_q });
2970 my $reporter = $SVN->do_update($rev, '', 1, $ed, $pool);
2971 my @lock = $SVN::Core::VERSION ge '1.2.0' ? (undef) : ();
2972 my (undef, $last_rev, undef) = cmt_metadata($last_commit);
2973 $reporter->set_path('', $last_rev, 0, @lock, $pool);
2974 $reporter->finish_report($pool);
2975 $pool->clear;
2976 unless ($ed->{git_commit_ok}) {
2977 die "SVN connection failed somewhere...\n";
2978 }
2979 libsvn_log_entry($rev, $author, $date, $msg, [$last_commit]);
2980 }
2981
2982 sub libsvn_fetch_full {
2983 my ($last_commit, $paths, $rev, $author, $date, $msg) = @_;
2984 open my $gui, '| git-update-index -z --index-info' or croak $!;
2985 my %amr;
2986 my $p = $SVN->{svn_path};
2987 foreach my $f (keys %$paths) {
2988 my $m = $paths->{$f}->action();
2989 if (length $p) {
2990 $f =~ s#^/\Q$p\E/##;
2991 next if $f =~ m#^/#;
2992 } else {
2993 $f =~ s#^/##;
2994 }
2995 if ($m =~ /^[DR]$/) {
2996 process_rm($gui, $last_commit, $f, $_q);
2997 next if $m eq 'D';
2998 # 'R' can be file replacements, too, right?
2999 }
3000 my $pool = SVN::Pool->new;
3001 my $t = $SVN->check_path($f, $rev, $pool);
3002 if ($t == $SVN::Node::file) {
3003 if ($m =~ /^[AMR]$/) {
3004 $amr{$f} = $m;
3005 } else {
3006 die "Unrecognized action: $m, ($f r$rev)\n";
3007 }
3008 } elsif ($t == $SVN::Node::dir && $m =~ /^[AR]$/) {
3009 my @traversed = ();
3010 libsvn_traverse($gui, '', $f, $rev, \@traversed);
3011 foreach (@traversed) {
3012 $amr{$_} = $m;
3013 }
3014 }
3015 $pool->clear;
3016 }
3017 foreach (keys %amr) {
3018 libsvn_get_file($gui, $_, $rev, $amr{$_});
3019 }
3020 close $gui or croak $?;
3021 return libsvn_log_entry($rev, $author, $date, $msg, [$last_commit]);
3022 }
3023
3024 sub svn_grab_base_rev {
3025 defined(my $pid = open my $fh, '-|') or croak $!;
3026 if (!$pid) {
3027 open my $null, '>', '/dev/null' or croak $!;
3028 open STDERR, '>&', $null or croak $!;
3029 exec qw/git-rev-parse --verify/,"refs/remotes/$GIT_SVN^0"
3030 or croak $!;
3031 }
3032 chomp(my $c = do { local $/; <$fh> });
3033 close $fh;
3034 if (defined $c && length $c) {
3035 my ($url, $rev, $uuid) = cmt_metadata($c);
3036 return ($rev, $c) if defined $rev;
3037 }
3038 if ($_no_metadata) {
3039 my $offset = -41; # from tail
3040 my $rl;
3041 open my $fh, '<', $REVDB or
3042 die "--no-metadata specified and $REVDB not readable\n";
3043 seek $fh, $offset, 2;
3044 $rl = readline $fh;
3045 defined $rl or return (undef, undef);
3046 chomp $rl;
3047 while ($c ne $rl && tell $fh != 0) {
3048 $offset -= 41;
3049 seek $fh, $offset, 2;
3050 $rl = readline $fh;
3051 defined $rl or return (undef, undef);
3052 chomp $rl;
3053 }
3054 my $rev = tell $fh;
3055 croak $! if ($rev < -1);
3056 $rev = ($rev - 41) / 41;
3057 close $fh or croak $!;
3058 return ($rev, $c);
3059 }
3060 return (undef, undef);
3061 }
3062
3063 sub libsvn_parse_revision {
3064 my $base = shift;
3065 my $head = $SVN->get_latest_revnum();
3066 if (!defined $_revision || $_revision eq 'BASE:HEAD') {
3067 return ($base + 1, $head) if (defined $base);
3068 return (0, $head);
3069 }
3070 return ($1, $2) if ($_revision =~ /^(\d+):(\d+)$/);
3071 return ($_revision, $_revision) if ($_revision =~ /^\d+$/);
3072 if ($_revision =~ /^BASE:(\d+)$/) {
3073 return ($base + 1, $1) if (defined $base);
3074 return (0, $head);
3075 }
3076 return ($1, $head) if ($_revision =~ /^(\d+):HEAD$/);
3077 die "revision argument: $_revision not understood by git-svn\n",
3078 "Try using the command-line svn client instead\n";
3079 }
3080
3081 sub libsvn_traverse {
3082 my ($gui, $pfx, $path, $rev, $files) = @_;
3083 my $cwd = length $pfx ? "$pfx/$path" : $path;
3084 my $pool = SVN::Pool->new;
3085 $cwd =~ s#^\Q$SVN->{svn_path}\E##;
3086 my ($dirent, $r, $props) = $SVN->get_dir($cwd, $rev, $pool);
3087 foreach my $d (keys %$dirent) {
3088 my $t = $dirent->{$d}->kind;
3089 if ($t == $SVN::Node::dir) {
3090 libsvn_traverse($gui, $cwd, $d, $rev, $files);
3091 } elsif ($t == $SVN::Node::file) {
3092 my $file = "$cwd/$d";
3093 if (defined $files) {
3094 push @$files, $file;
3095 } else {
3096 libsvn_get_file($gui, $file, $rev, 'A');
3097 }
3098 }
3099 }
3100 $pool->clear;
3101 }
3102
3103 sub libsvn_traverse_ignore {
3104 my ($fh, $path, $r) = @_;
3105 $path =~ s#^/+##g;
3106 my $pool = SVN::Pool->new;
3107 my ($dirent, undef, $props) = $SVN->get_dir($path, $r, $pool);
3108 my $p = $path;
3109 $p =~ s#^\Q$SVN->{svn_path}\E/##;
3110 print $fh length $p ? "\n# $p\n" : "\n# /\n";
3111 if (my $s = $props->{'svn:ignore'}) {
3112 $s =~ s/[\r\n]+/\n/g;
3113 chomp $s;
3114 if (length $p == 0) {
3115 $s =~ s#\n#\n/$p#g;
3116 print $fh "/$s\n";
3117 } else {
3118 $s =~ s#\n#\n/$p/#g;
3119 print $fh "/$p/$s\n";
3120 }
3121 }
3122 foreach (sort keys %$dirent) {
3123 next if $dirent->{$_}->kind != $SVN::Node::dir;
3124 libsvn_traverse_ignore($fh, "$path/$_", $r);
3125 }
3126 $pool->clear;
3127 }
3128
3129 sub revisions_eq {
3130 my ($path, $r0, $r1) = @_;
3131 return 1 if $r0 == $r1;
3132 my $nr = 0;
3133 if ($_use_lib) {
3134 # should be OK to use Pool here (r1 - r0) should be small
3135 my $pool = SVN::Pool->new;
3136 libsvn_get_log($SVN, [$path], $r0, $r1,
3137 0, 0, 1, sub {$nr++}, $pool);
3138 $pool->clear;
3139 } else {
3140 my ($url, undef) = repo_path_split($SVN_URL);
3141 my $svn_log = svn_log_raw("$url/$path","-r$r0:$r1");
3142 while (next_log_entry($svn_log)) { $nr++ }
3143 close $svn_log->{fh};
3144 }
3145 return 0 if ($nr > 1);
3146 return 1;
3147 }
3148
3149 sub libsvn_find_parent_branch {
3150 my ($paths, $rev, $author, $date, $msg) = @_;
3151 my $svn_path = '/'.$SVN->{svn_path};
3152
3153 # look for a parent from another branch:
3154 my $i = $paths->{$svn_path} or return;
3155 my $branch_from = $i->copyfrom_path or return;
3156 my $r = $i->copyfrom_rev;
3157 print STDERR "Found possible branch point: ",
3158 "$branch_from => $svn_path, $r\n";
3159 $branch_from =~ s#^/##;
3160 my $l_map = {};
3161 read_url_paths_all($l_map, '', "$GIT_DIR/svn");
3162 my $url = $SVN->{repos_root};
3163 defined $l_map->{$url} or return;
3164 my $id = $l_map->{$url}->{$branch_from};
3165 if (!defined $id && $_follow_parent) {
3166 print STDERR "Following parent: $branch_from\@$r\n";
3167 # auto create a new branch and follow it
3168 $id = basename($branch_from);
3169 $id .= '@'.$r if -r "$GIT_DIR/svn/$id";
3170 while (-r "$GIT_DIR/svn/$id") {
3171 # just grow a tail if we're not unique enough :x
3172 $id .= '-';
3173 }
3174 }
3175 return unless defined $id;
3176
3177 my ($r0, $parent) = find_rev_before($r,$id,1);
3178 if ($_follow_parent && (!defined $r0 || !defined $parent)) {
3179 defined(my $pid = fork) or croak $!;
3180 if (!$pid) {
3181 $GIT_SVN = $ENV{GIT_SVN_ID} = $id;
3182 init_vars();
3183 $SVN_URL = "$url/$branch_from";
3184 $SVN = undef;
3185 setup_git_svn();
3186 # we can't assume SVN_URL exists at r+1:
3187 $_revision = "0:$r";
3188 fetch_lib();
3189 exit 0;
3190 }
3191 waitpid $pid, 0;
3192 croak $? if $?;
3193 ($r0, $parent) = find_rev_before($r,$id,1);
3194 }
3195 return unless (defined $r0 && defined $parent);
3196 if (revisions_eq($branch_from, $r0, $r)) {
3197 unlink $GIT_SVN_INDEX;
3198 print STDERR "Found branch parent: ($GIT_SVN) $parent\n";
3199 sys(qw/git-read-tree/, $parent);
3200 # I can't seem to get do_switch() to work correctly with
3201 # the SWIG interface (TypeError when passing switch_url...),
3202 # so we'll unconditionally bypass the delta interface here
3203 # for now
3204 return libsvn_fetch_full($parent, $paths, $rev,
3205 $author, $date, $msg);
3206 }
3207 print STDERR "Nope, branch point not imported or unknown\n";
3208 return undef;
3209 }
3210
3211 sub libsvn_get_log {
3212 my ($ra, @args) = @_;
3213 $args[4]-- if $args[4] && $_xfer_delta && ! $_follow_parent;
3214 if ($SVN::Core::VERSION le '1.2.0') {
3215 splice(@args, 3, 1);
3216 }
3217 $ra->get_log(@args);
3218 }
3219
3220 sub libsvn_new_tree {
3221 if (my $log_entry = libsvn_find_parent_branch(@_)) {
3222 return $log_entry;
3223 }
3224 my ($paths, $rev, $author, $date, $msg) = @_;
3225 if ($_xfer_delta) {
3226 my $pool = SVN::Pool->new;
3227 my $ed = SVN::Git::Fetcher->new({q => $_q});
3228 my $reporter = $SVN->do_update($rev, '', 1, $ed, $pool);
3229 my @lock = $SVN::Core::VERSION ge '1.2.0' ? (undef) : ();
3230 $reporter->set_path('', $rev, 1, @lock, $pool);
3231 $reporter->finish_report($pool);
3232 $pool->clear;
3233 unless ($ed->{git_commit_ok}) {
3234 die "SVN connection failed somewhere...\n";
3235 }
3236 } else {
3237 open my $gui, '| git-update-index -z --index-info' or croak $!;
3238 libsvn_traverse($gui, '', $SVN->{svn_path}, $rev);
3239 close $gui or croak $?;
3240 }
3241 return libsvn_log_entry($rev, $author, $date, $msg);
3242 }
3243
3244 sub find_graft_path_commit {
3245 my ($tree_paths, $p1, $r1) = @_;
3246 foreach my $x (keys %$tree_paths) {
3247 next unless ($p1 =~ /^\Q$x\E/);
3248 my $i = $tree_paths->{$x};
3249 my ($r0, $parent) = find_rev_before($r1,$i,1);
3250 return $parent if (defined $r0 && $r0 == $r1);
3251 print STDERR "r$r1 of $i not imported\n";
3252 next;
3253 }
3254 return undef;
3255 }
3256
3257 sub find_graft_path_parents {
3258 my ($grafts, $tree_paths, $c, $p0, $r0) = @_;
3259 foreach my $x (keys %$tree_paths) {
3260 next unless ($p0 =~ /^\Q$x\E/);
3261 my $i = $tree_paths->{$x};
3262 my ($r, $parent) = find_rev_before($r0, $i, 1);
3263 if (defined $r && defined $parent && revisions_eq($x,$r,$r0)) {
3264 my ($url_b, undef, $uuid_b) = cmt_metadata($c);
3265 my ($url_a, undef, $uuid_a) = cmt_metadata($parent);
3266 next if ($url_a && $url_b && $url_a eq $url_b &&
3267 $uuid_b eq $uuid_a);
3268 $grafts->{$c}->{$parent} = 1;
3269 }
3270 }
3271 }
3272
3273 sub libsvn_graft_file_copies {
3274 my ($grafts, $tree_paths, $path, $paths, $rev) = @_;
3275 foreach (keys %$paths) {
3276 my $i = $paths->{$_};
3277 my ($m, $p0, $r0) = ($i->action, $i->copyfrom_path,
3278 $i->copyfrom_rev);
3279 next unless (defined $p0 && defined $r0);
3280
3281 my $p1 = $_;
3282 $p1 =~ s#^/##;
3283 $p0 =~ s#^/##;
3284 my $c = find_graft_path_commit($tree_paths, $p1, $rev);
3285 next unless $c;
3286 find_graft_path_parents($grafts, $tree_paths, $c, $p0, $r0);
3287 }
3288 }
3289
3290 sub set_index {
3291 my $old = $ENV{GIT_INDEX_FILE};
3292 $ENV{GIT_INDEX_FILE} = shift;
3293 return $old;
3294 }
3295
3296 sub restore_index {
3297 my ($old) = @_;
3298 if (defined $old) {
3299 $ENV{GIT_INDEX_FILE} = $old;
3300 } else {
3301 delete $ENV{GIT_INDEX_FILE};
3302 }
3303 }
3304
3305 sub libsvn_commit_cb {
3306 my ($rev, $date, $committer, $c, $msg, $r_last, $cmt_last) = @_;
3307 if ($_optimize_commits && $rev == ($r_last + 1)) {
3308 my $log = libsvn_log_entry($rev,$committer,$date,$msg);
3309 $log->{tree} = get_tree_from_treeish($c);
3310 my $cmt = git_commit($log, $cmt_last, $c);
3311 my @diff = safe_qx('git-diff-tree', $cmt, $c);
3312 if (@diff) {
3313 print STDERR "Trees differ: $cmt $c\n",
3314 join('',@diff),"\n";
3315 exit 1;
3316 }
3317 } else {
3318 fetch("$rev=$c");
3319 }
3320 }
3321
3322 sub libsvn_ls_fullurl {
3323 my $fullurl = shift;
3324 my $ra = libsvn_connect($fullurl);
3325 my @ret;
3326 my $pool = SVN::Pool->new;
3327 my $r = defined $_revision ? $_revision : $ra->get_latest_revnum;
3328 my ($dirent, undef, undef) = $ra->get_dir('', $r, $pool);
3329 foreach my $d (keys %$dirent) {
3330 if ($dirent->{$d}->kind == $SVN::Node::dir) {
3331 push @ret, "$d/"; # add '/' for compat with cli svn
3332 }
3333 }
3334 $pool->clear;
3335 return @ret;
3336 }
3337
3338
3339 sub libsvn_skip_unknown_revs {
3340 my $err = shift;
3341 my $errno = $err->apr_err();
3342 # Maybe the branch we're tracking didn't
3343 # exist when the repo started, so it's
3344 # not an error if it doesn't, just continue
3345 #
3346 # Wonderfully consistent library, eh?
3347 # 160013 - svn:// and file://
3348 # 175002 - http(s)://
3349 # 175007 - http(s):// (this repo required authorization, too...)
3350 # More codes may be discovered later...
3351 if ($errno == 175007 || $errno == 175002 || $errno == 160013) {
3352 return;
3353 }
3354 croak "Error from SVN, ($errno): ", $err->expanded_message,"\n";
3355 };
3356
3357 # Tie::File seems to be prone to offset errors if revisions get sparse,
3358 # it's not that fast, either. Tie::File is also not in Perl 5.6. So
3359 # one of my favorite modules is out :< Next up would be one of the DBM
3360 # modules, but I'm not sure which is most portable... So I'll just
3361 # go with something that's plain-text, but still capable of
3362 # being randomly accessed. So here's my ultra-simple fixed-width
3363 # database. All records are 40 characters + "\n", so it's easy to seek
3364 # to a revision: (41 * rev) is the byte offset.
3365 # A record of 40 0s denotes an empty revision.
3366 # And yes, it's still pretty fast (faster than Tie::File).
3367 sub revdb_set {
3368 my ($file, $rev, $commit) = @_;
3369 length $commit == 40 or croak "arg3 must be a full SHA1 hexsum\n";
3370 open my $fh, '+<', $file or croak $!;
3371 my $offset = $rev * 41;
3372 # assume that append is the common case:
3373 seek $fh, 0, 2 or croak $!;
3374 my $pos = tell $fh;
3375 if ($pos < $offset) {
3376 print $fh (('0' x 40),"\n") x (($offset - $pos) / 41);
3377 }
3378 seek $fh, $offset, 0 or croak $!;
3379 print $fh $commit,"\n";
3380 close $fh or croak $!;
3381 }
3382
3383 sub revdb_get {
3384 my ($file, $rev) = @_;
3385 my $ret;
3386 my $offset = $rev * 41;
3387 open my $fh, '<', $file or croak $!;
3388 seek $fh, $offset, 0;
3389 if (tell $fh == $offset) {
3390 $ret = readline $fh;
3391 if (defined $ret) {
3392 chomp $ret;
3393 $ret = undef if ($ret =~ /^0{40}$/);
3394 }
3395 }
3396 close $fh or croak $!;
3397 return $ret;
3398 }
3399
3400 sub copy_remote_ref {
3401 my $origin = $_cp_remote ? $_cp_remote : 'origin';
3402 my $ref = "refs/remotes/$GIT_SVN";
3403 if (safe_qx('git-ls-remote', $origin, $ref)) {
3404 sys(qw/git fetch/, $origin, "$ref:$ref");
3405 } elsif ($_cp_remote && !$_upgrade) {
3406 die "Unable to find remote reference: ",
3407 "refs/remotes/$GIT_SVN on $origin\n";
3408 }
3409 }
3410 package SVN::Git::Fetcher;
3411 use vars qw/@ISA/;
3412 use strict;
3413 use warnings;
3414 use Carp qw/croak/;
3415 use IO::File qw//;
3416
3417 # file baton members: path, mode_a, mode_b, pool, fh, blob, base
3418 sub new {
3419 my ($class, $git_svn) = @_;
3420 my $self = SVN::Delta::Editor->new;
3421 bless $self, $class;
3422 open my $gui, '| git-update-index -z --index-info' or croak $!;
3423 $self->{gui} = $gui;
3424 $self->{c} = $git_svn->{c} if exists $git_svn->{c};
3425 $self->{q} = $git_svn->{q};
3426 require Digest::MD5;
3427 $self;
3428 }
3429
3430 sub delete_entry {
3431 my ($self, $path, $rev, $pb) = @_;
3432 process_rm($self->{gui}, $self->{c}, $path, $self->{q});
3433 undef;
3434 }
3435
3436 sub open_file {
3437 my ($self, $path, $pb, $rev) = @_;
3438 my ($mode, $blob) = (safe_qx('git-ls-tree',$self->{c},'--',$path)
3439 =~ /^(\d{6}) blob ([a-f\d]{40})\t/);
3440 { path => $path, mode_a => $mode, mode_b => $mode, blob => $blob,
3441 pool => SVN::Pool->new, action => 'M' };
3442 }
3443
3444 sub add_file {
3445 my ($self, $path, $pb, $cp_path, $cp_rev) = @_;
3446 { path => $path, mode_a => 100644, mode_b => 100644,
3447 pool => SVN::Pool->new, action => 'A' };
3448 }
3449
3450 sub change_file_prop {
3451 my ($self, $fb, $prop, $value) = @_;
3452 if ($prop eq 'svn:executable') {
3453 if ($fb->{mode_b} != 120000) {
3454 $fb->{mode_b} = defined $value ? 100755 : 100644;
3455 }
3456 } elsif ($prop eq 'svn:special') {
3457 $fb->{mode_b} = defined $value ? 120000 : 100644;
3458 }
3459 undef;
3460 }
3461
3462 sub apply_textdelta {
3463 my ($self, $fb, $exp) = @_;
3464 my $fh = IO::File->new_tmpfile;
3465 $fh->autoflush(1);
3466 # $fh gets auto-closed() by SVN::TxDelta::apply(),
3467 # (but $base does not,) so dup() it for reading in close_file
3468 open my $dup, '<&', $fh or croak $!;
3469 my $base = IO::File->new_tmpfile;
3470 $base->autoflush(1);
3471 if ($fb->{blob}) {
3472 defined (my $pid = fork) or croak $!;
3473 if (!$pid) {
3474 open STDOUT, '>&', $base or croak $!;
3475 print STDOUT 'link ' if ($fb->{mode_a} == 120000);
3476 exec qw/git-cat-file blob/, $fb->{blob} or croak $!;
3477 }
3478 waitpid $pid, 0;
3479 croak $? if $?;
3480
3481 if (defined $exp) {
3482 seek $base, 0, 0 or croak $!;
3483 my $md5 = Digest::MD5->new;
3484 $md5->addfile($base);
3485 my $got = $md5->hexdigest;
3486 die "Checksum mismatch: $fb->{path} $fb->{blob}\n",
3487 "expected: $exp\n",
3488 " got: $got\n" if ($got ne $exp);
3489 }
3490 }
3491 seek $base, 0, 0 or croak $!;
3492 $fb->{fh} = $dup;
3493 $fb->{base} = $base;
3494 [ SVN::TxDelta::apply($base, $fh, undef, $fb->{path}, $fb->{pool}) ];
3495 }
3496
3497 sub close_file {
3498 my ($self, $fb, $exp) = @_;
3499 my $hash;
3500 my $path = $fb->{path};
3501 if (my $fh = $fb->{fh}) {
3502 seek($fh, 0, 0) or croak $!;
3503 my $md5 = Digest::MD5->new;
3504 $md5->addfile($fh);
3505 my $got = $md5->hexdigest;
3506 die "Checksum mismatch: $path\n",
3507 "expected: $exp\n got: $got\n" if ($got ne $exp);
3508 seek($fh, 0, 0) or croak $!;
3509 if ($fb->{mode_b} == 120000) {
3510 read($fh, my $buf, 5) == 5 or croak $!;
3511 $buf eq 'link ' or die "$path has mode 120000",
3512 "but is not a link\n";
3513 }
3514 defined(my $pid = open my $out,'-|') or die "Can't fork: $!\n";
3515 if (!$pid) {
3516 open STDIN, '<&', $fh or croak $!;
3517 exec qw/git-hash-object -w --stdin/ or croak $!;
3518 }
3519 chomp($hash = do { local $/; <$out> });
3520 close $out or croak $!;
3521 close $fh or croak $!;
3522 $hash =~ /^[a-f\d]{40}$/ or die "not a sha1: $hash\n";
3523 close $fb->{base} or croak $!;
3524 } else {
3525 $hash = $fb->{blob} or die "no blob information\n";
3526 }
3527 $fb->{pool}->clear;
3528 my $gui = $self->{gui};
3529 print $gui "$fb->{mode_b} $hash\t$path\0" or croak $!;
3530 print "\t$fb->{action}\t$path\n" if $fb->{action} && ! $self->{q};
3531 undef;
3532 }
3533
3534 sub abort_edit {
3535 my $self = shift;
3536 close $self->{gui};
3537 $self->SUPER::abort_edit(@_);
3538 }
3539
3540 sub close_edit {
3541 my $self = shift;
3542 close $self->{gui} or croak $!;
3543 $self->{git_commit_ok} = 1;
3544 $self->SUPER::close_edit(@_);
3545 }
3546
3547 package SVN::Git::Editor;
3548 use vars qw/@ISA/;
3549 use strict;
3550 use warnings;
3551 use Carp qw/croak/;
3552 use IO::File;
3553
3554 sub new {
3555 my $class = shift;
3556 my $git_svn = shift;
3557 my $self = SVN::Delta::Editor->new(@_);
3558 bless $self, $class;
3559 foreach (qw/svn_path c r ra /) {
3560 die "$_ required!\n" unless (defined $git_svn->{$_});
3561 $self->{$_} = $git_svn->{$_};
3562 }
3563 $self->{pool} = SVN::Pool->new;
3564 $self->{bat} = { '' => $self->open_root($self->{r}, $self->{pool}) };
3565 $self->{rm} = { };
3566 require Digest::MD5;
3567 return $self;
3568 }
3569
3570 sub split_path {
3571 return ($_[0] =~ m#^(.*?)/?([^/]+)$#);
3572 }
3573
3574 sub repo_path {
3575 (defined $_[1] && length $_[1]) ? $_[1] : ''
3576 }
3577
3578 sub url_path {
3579 my ($self, $path) = @_;
3580 $self->{ra}->{url} . '/' . $self->repo_path($path);
3581 }
3582
3583 sub rmdirs {
3584 my ($self, $q) = @_;
3585 my $rm = $self->{rm};
3586 delete $rm->{''}; # we never delete the url we're tracking
3587 return unless %$rm;
3588
3589 foreach (keys %$rm) {
3590 my @d = split m#/#, $_;
3591 my $c = shift @d;
3592 $rm->{$c} = 1;
3593 while (@d) {
3594 $c .= '/' . shift @d;
3595 $rm->{$c} = 1;
3596 }
3597 }
3598 delete $rm->{$self->{svn_path}};
3599 delete $rm->{''}; # we never delete the url we're tracking
3600 return unless %$rm;
3601
3602 defined(my $pid = open my $fh,'-|') or croak $!;
3603 if (!$pid) {
3604 exec qw/git-ls-tree --name-only -r -z/, $self->{c} or croak $!;
3605 }
3606 local $/ = "\0";
3607 while (<$fh>) {
3608 chomp;
3609 my @dn = split m#/#, $_;
3610 while (pop @dn) {
3611 delete $rm->{join '/', @dn};
3612 }
3613 unless (%$rm) {
3614 close $fh;
3615 return;
3616 }
3617 }
3618 close $fh;
3619
3620 my ($r, $p, $bat) = ($self->{r}, $self->{pool}, $self->{bat});
3621 foreach my $d (sort { $b =~ tr#/#/# <=> $a =~ tr#/#/# } keys %$rm) {
3622 $self->close_directory($bat->{$d}, $p);
3623 my ($dn) = ($d =~ m#^(.*?)/?(?:[^/]+)$#);
3624 print "\tD+\t/$d/\n" unless $q;
3625 $self->SUPER::delete_entry($d, $r, $bat->{$dn}, $p);
3626 delete $bat->{$d};
3627 }
3628 }
3629
3630 sub open_or_add_dir {
3631 my ($self, $full_path, $baton) = @_;
3632 my $p = SVN::Pool->new;
3633 my $t = $self->{ra}->check_path($full_path, $self->{r}, $p);
3634 $p->clear;
3635 if ($t == $SVN::Node::none) {
3636 return $self->add_directory($full_path, $baton,
3637 undef, -1, $self->{pool});
3638 } elsif ($t == $SVN::Node::dir) {
3639 return $self->open_directory($full_path, $baton,
3640 $self->{r}, $self->{pool});
3641 }
3642 print STDERR "$full_path already exists in repository at ",
3643 "r$self->{r} and it is not a directory (",
3644 ($t == $SVN::Node::file ? 'file' : 'unknown'),"/$t)\n";
3645 exit 1;
3646 }
3647
3648 sub ensure_path {
3649 my ($self, $path) = @_;
3650 my $bat = $self->{bat};
3651 $path = $self->repo_path($path);
3652 return $bat->{''} unless (length $path);
3653 my @p = split m#/+#, $path;
3654 my $c = shift @p;
3655 $bat->{$c} ||= $self->open_or_add_dir($c, $bat->{''});
3656 while (@p) {
3657 my $c0 = $c;
3658 $c .= '/' . shift @p;
3659 $bat->{$c} ||= $self->open_or_add_dir($c, $bat->{$c0});
3660 }
3661 return $bat->{$c};
3662 }
3663
3664 sub A {
3665 my ($self, $m, $q) = @_;
3666 my ($dir, $file) = split_path($m->{file_b});
3667 my $pbat = $self->ensure_path($dir);
3668 my $fbat = $self->add_file($self->repo_path($m->{file_b}), $pbat,
3669 undef, -1);
3670 print "\tA\t$m->{file_b}\n" unless $q;
3671 $self->chg_file($fbat, $m);
3672 $self->close_file($fbat,undef,$self->{pool});
3673 }
3674
3675 sub C {
3676 my ($self, $m, $q) = @_;
3677 my ($dir, $file) = split_path($m->{file_b});
3678 my $pbat = $self->ensure_path($dir);
3679 my $fbat = $self->add_file($self->repo_path($m->{file_b}), $pbat,
3680 $self->url_path($m->{file_a}), $self->{r});
3681 print "\tC\t$m->{file_a} => $m->{file_b}\n" unless $q;
3682 $self->chg_file($fbat, $m);
3683 $self->close_file($fbat,undef,$self->{pool});
3684 }
3685
3686 sub delete_entry {
3687 my ($self, $path, $pbat) = @_;
3688 my $rpath = $self->repo_path($path);
3689 my ($dir, $file) = split_path($rpath);
3690 $self->{rm}->{$dir} = 1;
3691 $self->SUPER::delete_entry($rpath, $self->{r}, $pbat, $self->{pool});
3692 }
3693
3694 sub R {
3695 my ($self, $m, $q) = @_;
3696 my ($dir, $file) = split_path($m->{file_b});
3697 my $pbat = $self->ensure_path($dir);
3698 my $fbat = $self->add_file($self->repo_path($m->{file_b}), $pbat,
3699 $self->url_path($m->{file_a}), $self->{r});
3700 print "\tR\t$m->{file_a} => $m->{file_b}\n" unless $q;
3701 $self->chg_file($fbat, $m);
3702 $self->close_file($fbat,undef,$self->{pool});
3703
3704 ($dir, $file) = split_path($m->{file_a});
3705 $pbat = $self->ensure_path($dir);
3706 $self->delete_entry($m->{file_a}, $pbat);
3707 }
3708
3709 sub M {
3710 my ($self, $m, $q) = @_;
3711 my ($dir, $file) = split_path($m->{file_b});
3712 my $pbat = $self->ensure_path($dir);
3713 my $fbat = $self->open_file($self->repo_path($m->{file_b}),
3714 $pbat,$self->{r},$self->{pool});
3715 print "\t$m->{chg}\t$m->{file_b}\n" unless $q;
3716 $self->chg_file($fbat, $m);
3717 $self->close_file($fbat,undef,$self->{pool});
3718 }
3719
3720 sub T { shift->M(@_) }
3721
3722 sub change_file_prop {
3723 my ($self, $fbat, $pname, $pval) = @_;
3724 $self->SUPER::change_file_prop($fbat, $pname, $pval, $self->{pool});
3725 }
3726
3727 sub chg_file {
3728 my ($self, $fbat, $m) = @_;
3729 if ($m->{mode_b} =~ /755$/ && $m->{mode_a} !~ /755$/) {
3730 $self->change_file_prop($fbat,'svn:executable','*');
3731 } elsif ($m->{mode_b} !~ /755$/ && $m->{mode_a} =~ /755$/) {
3732 $self->change_file_prop($fbat,'svn:executable',undef);
3733 }
3734 my $fh = IO::File->new_tmpfile or croak $!;
3735 if ($m->{mode_b} =~ /^120/) {
3736 print $fh 'link ' or croak $!;
3737 $self->change_file_prop($fbat,'svn:special','*');
3738 } elsif ($m->{mode_a} =~ /^120/ && $m->{mode_b} !~ /^120/) {
3739 $self->change_file_prop($fbat,'svn:special',undef);
3740 }
3741 defined(my $pid = fork) or croak $!;
3742 if (!$pid) {
3743 open STDOUT, '>&', $fh or croak $!;
3744 exec qw/git-cat-file blob/, $m->{sha1_b} or croak $!;
3745 }
3746 waitpid $pid, 0;
3747 croak $? if $?;
3748 $fh->flush == 0 or croak $!;
3749 seek $fh, 0, 0 or croak $!;
3750
3751 my $md5 = Digest::MD5->new;
3752 $md5->addfile($fh) or croak $!;
3753 seek $fh, 0, 0 or croak $!;
3754
3755 my $exp = $md5->hexdigest;
3756 my $pool = SVN::Pool->new;
3757 my $atd = $self->apply_textdelta($fbat, undef, $pool);
3758 my $got = SVN::TxDelta::send_stream($fh, @$atd, $pool);
3759 die "Checksum mismatch\nexpected: $exp\ngot: $got\n" if ($got ne $exp);
3760 $pool->clear;
3761
3762 close $fh or croak $!;
3763 }
3764
3765 sub D {
3766 my ($self, $m, $q) = @_;
3767 my ($dir, $file) = split_path($m->{file_b});
3768 my $pbat = $self->ensure_path($dir);
3769 print "\tD\t$m->{file_b}\n" unless $q;
3770 $self->delete_entry($m->{file_b}, $pbat);
3771 }
3772
3773 sub close_edit {
3774 my ($self) = @_;
3775 my ($p,$bat) = ($self->{pool}, $self->{bat});
3776 foreach (sort { $b =~ tr#/#/# <=> $a =~ tr#/#/# } keys %$bat) {
3777 $self->close_directory($bat->{$_}, $p);
3778 }
3779 $self->SUPER::close_edit($p);
3780 $p->clear;
3781 }
3782
3783 sub abort_edit {
3784 my ($self) = @_;
3785 $self->SUPER::abort_edit($self->{pool});
3786 $self->{pool}->clear;
3787 }
3788
3789 __END__
3790
3791 Data structures:
3792
3793 $svn_log hashref (as returned by svn_log_raw)
3794 {
3795 fh => file handle of the log file,
3796 state => state of the log file parser (sep/msg/rev/msg_start...)
3797 }
3798
3799 $log_msg hashref as returned by next_log_entry($svn_log)
3800 {
3801 msg => 'whitespace-formatted log entry
3802 ', # trailing newline is preserved
3803 revision => '8', # integer
3804 date => '2004-02-24T17:01:44.108345Z', # commit date
3805 author => 'committer name'
3806 };
3807
3808
3809 @mods = array of diff-index line hashes, each element represents one line
3810 of diff-index output
3811
3812 diff-index line ($m hash)
3813 {
3814 mode_a => first column of diff-index output, no leading ':',
3815 mode_b => second column of diff-index output,
3816 sha1_b => sha1sum of the final blob,
3817 chg => change type [MCRADT],
3818 file_a => original file name of a file (iff chg is 'C' or 'R')
3819 file_b => new/current file name of a file (any chg)
3820 }
3821 ;
3822
3823 # retval of read_url_paths{,_all}();
3824 $l_map = {
3825 # repository root url
3826 'https://svn.musicpd.org' => {
3827 # repository path # GIT_SVN_ID
3828 'mpd/trunk' => 'trunk',
3829 'mpd/tags/0.11.5' => 'tags/0.11.5',
3830 },
3831 }
3832
3833 Notes:
3834 I don't trust the each() function on unless I created %hash myself
3835 because the internal iterator may not have started at base.
Eric Blake's git patches, for cygwin