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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@@';
13 use Cwd qw/abs_path/;
14 $GIT_DIR = abs_path($ENV{GIT_DIR} || '.git');
15 $ENV{GIT_DIR} = $GIT_DIR;
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 $| = 1; # unbuffer STDOUT
24 # properties that we do not log:
25 my %SKIP = ( 'svn:wc:ra_dav:version-url' => 1,
26 'svn:special' => 1,
27 'svn:executable' => 1,
28 'svn:entry:committed-rev' => 1,
29 'svn:entry:last-author' => 1,
30 'svn:entry:uuid' => 1,
31 'svn:entry:committed-date' => 1,
32 );
34 sub fatal (@) { print STDERR @_; exit 1 }
35 # If SVN:: library support is added, please make the dependencies
36 # optional and preserve the capability to use the command-line client.
37 # use eval { require SVN::... } to make it lazy load
38 # We don't use any modules not in the standard Perl distribution:
39 use Carp qw/croak/;
40 use IO::File qw//;
41 use File::Basename qw/dirname basename/;
42 use File::Path qw/mkpath/;
43 use Getopt::Long qw/:config gnu_getopt no_ignore_case auto_abbrev pass_through/;
44 use File::Spec qw//;
45 use File::Copy qw/copy/;
46 use POSIX qw/strftime/;
47 use IPC::Open3;
48 use Memoize;
49 memoize('revisions_eq');
50 memoize('cmt_metadata');
51 memoize('get_commit_time');
53 my ($SVN, $_use_lib);
55 sub nag_lib {
56 print STDERR <<EOF;
57 ! Please consider installing the SVN Perl libraries (version 1.1.0 or
58 ! newer). You will generally get better performance and fewer bugs,
59 ! especially if you:
60 ! 1) have a case-insensitive filesystem
61 ! 2) replace symlinks with files (and vice-versa) in commits
63 EOF
64 }
66 $_use_lib = 1 unless $ENV{GIT_SVN_NO_LIB};
67 libsvn_load();
68 nag_lib() unless $_use_lib;
70 my $_optimize_commits = 1 unless $ENV{GIT_SVN_NO_OPTIMIZE_COMMITS};
71 my $sha1 = qr/[a-f\d]{40}/;
72 my $sha1_short = qr/[a-f\d]{4,40}/;
73 my $_esc_color = qr/(?:\033\[(?:(?:\d+;)*\d*)?m)*/;
74 my ($_revision,$_stdin,$_no_ignore_ext,$_no_stop_copy,$_help,$_rmdir,$_edit,
75 $_find_copies_harder, $_l, $_cp_similarity, $_cp_remote,
76 $_repack, $_repack_nr, $_repack_flags, $_q,
77 $_message, $_file, $_follow_parent, $_no_metadata,
78 $_template, $_shared, $_no_default_regex, $_no_graft_copy,
79 $_limit, $_verbose, $_incremental, $_oneline, $_l_fmt, $_show_commit,
80 $_version, $_upgrade, $_authors, $_branch_all_refs, @_opt_m,
81 $_merge, $_strategy, $_dry_run, $_ignore_nodate, $_non_recursive,
82 $_username, $_config_dir, $_no_auth_cache, $_xfer_delta,
83 $_pager, $_color);
84 my (@_branch_from, %tree_map, %users, %rusers, %equiv);
85 my ($_svn_co_url_revs, $_svn_pg_peg_revs, $_svn_can_do_switch);
86 my @repo_path_split_cache;
88 my %fc_opts = ( 'no-ignore-externals' => \$_no_ignore_ext,
89 'branch|b=s' => \@_branch_from,
90 'follow-parent|follow' => \$_follow_parent,
91 'branch-all-refs|B' => \$_branch_all_refs,
92 'authors-file|A=s' => \$_authors,
93 'repack:i' => \$_repack,
94 'no-metadata' => \$_no_metadata,
95 'quiet|q' => \$_q,
96 'username=s' => \$_username,
97 'config-dir=s' => \$_config_dir,
98 'no-auth-cache' => \$_no_auth_cache,
99 'ignore-nodate' => \$_ignore_nodate,
100 'repack-flags|repack-args|repack-opts=s' => \$_repack_flags);
102 my ($_trunk, $_tags, $_branches);
103 my %multi_opts = ( 'trunk|T=s' => \$_trunk,
104 'tags|t=s' => \$_tags,
105 'branches|b=s' => \$_branches );
106 my %init_opts = ( 'template=s' => \$_template, 'shared' => \$_shared );
107 my %cmt_opts = ( 'edit|e' => \$_edit,
108 'rmdir' => \$_rmdir,
109 'find-copies-harder' => \$_find_copies_harder,
110 'l=i' => \$_l,
111 'copy-similarity|C=i'=> \$_cp_similarity
112 );
114 my %cmd = (
115 fetch => [ \&fetch, "Download new revisions from SVN",
116 { 'revision|r=s' => \$_revision, %fc_opts } ],
117 init => [ \&init, "Initialize a repo for tracking" .
118 " (requires URL argument)",
119 \%init_opts ],
120 commit => [ \&commit, "Commit git revisions to SVN",
121 { 'stdin|' => \$_stdin, %cmt_opts, %fc_opts, } ],
122 'show-ignore' => [ \&show_ignore, "Show svn:ignore listings",
123 { 'revision|r=i' => \$_revision } ],
124 rebuild => [ \&rebuild, "Rebuild git-svn metadata (after git clone)",
125 { 'no-ignore-externals' => \$_no_ignore_ext,
126 'copy-remote|remote=s' => \$_cp_remote,
127 'upgrade' => \$_upgrade } ],
128 'graft-branches' => [ \&graft_branches,
129 'Detect merges/branches from already imported history',
130 { 'merge-rx|m' => \@_opt_m,
131 'branch|b=s' => \@_branch_from,
132 'branch-all-refs|B' => \$_branch_all_refs,
133 'no-default-regex' => \$_no_default_regex,
134 'no-graft-copy' => \$_no_graft_copy } ],
135 'multi-init' => [ \&multi_init,
136 'Initialize multiple trees (like git-svnimport)',
137 { %multi_opts, %init_opts,
138 'revision|r=i' => \$_revision,
139 'username=s' => \$_username,
140 'config-dir=s' => \$_config_dir,
141 'no-auth-cache' => \$_no_auth_cache,
142 } ],
143 'multi-fetch' => [ \&multi_fetch,
144 'Fetch multiple trees (like git-svnimport)',
145 \%fc_opts ],
146 'log' => [ \&show_log, 'Show commit logs',
147 { 'limit=i' => \$_limit,
148 'revision|r=s' => \$_revision,
149 'verbose|v' => \$_verbose,
150 'incremental' => \$_incremental,
151 'oneline' => \$_oneline,
152 'show-commit' => \$_show_commit,
153 'non-recursive' => \$_non_recursive,
154 'authors-file|A=s' => \$_authors,
155 'color' => \$_color,
156 'pager=s' => \$_pager,
157 } ],
158 'commit-diff' => [ \&commit_diff, 'Commit a diff between two trees',
159 { 'message|m=s' => \$_message,
160 'file|F=s' => \$_file,
161 'revision|r=s' => \$_revision,
162 %cmt_opts } ],
163 dcommit => [ \&dcommit, 'Commit several diffs to merge with upstream',
164 { 'merge|m|M' => \$_merge,
165 'strategy|s=s' => \$_strategy,
166 'dry-run|n' => \$_dry_run,
167 %cmt_opts } ],
168 );
170 my $cmd;
171 for (my $i = 0; $i < @ARGV; $i++) {
172 if (defined $cmd{$ARGV[$i]}) {
173 $cmd = $ARGV[$i];
174 splice @ARGV, $i, 1;
175 last;
176 }
177 };
179 my %opts = %{$cmd{$cmd}->[2]} if (defined $cmd);
181 read_repo_config(\%opts);
182 my $rv = GetOptions(%opts, 'help|H|h' => \$_help,
183 'version|V' => \$_version,
184 'id|i=s' => \$GIT_SVN);
185 exit 1 if (!$rv && $cmd ne 'log');
187 set_default_vals();
188 usage(0) if $_help;
189 version() if $_version;
190 usage(1) unless defined $cmd;
191 init_vars();
192 load_authors() if $_authors;
193 load_all_refs() if $_branch_all_refs;
194 svn_compat_check() unless $_use_lib;
195 migration_check() unless $cmd =~ /^(?:init|rebuild|multi-init|commit-diff)$/;
196 $cmd{$cmd}->[0]->(@ARGV);
197 exit 0;
199 ####################### primary functions ######################
200 sub usage {
201 my $exit = shift || 0;
202 my $fd = $exit ? \*STDERR : \*STDOUT;
203 print $fd <<"";
204 git-svn - bidirectional operations between a single Subversion tree and git
205 Usage: $0 <command> [options] [arguments]\n
207 print $fd "Available commands:\n" unless $cmd;
209 foreach (sort keys %cmd) {
210 next if $cmd && $cmd ne $_;
211 print $fd ' ',pack('A17',$_),$cmd{$_}->[1],"\n";
212 foreach (keys %{$cmd{$_}->[2]}) {
213 # prints out arguments as they should be passed:
214 my $x = s#[:=]s$## ? '<arg>' : s#[:=]i$## ? '<num>' : '';
215 print $fd ' ' x 21, join(', ', map { length $_ > 1 ?
216 "--$_" : "-$_" }
217 split /\|/,$_)," $x\n";
218 }
219 }
220 print $fd <<"";
221 \nGIT_SVN_ID may be set in the environment or via the --id/-i switch to an
222 arbitrary identifier if you're tracking multiple SVN branches/repositories in
223 one git repository and want to keep them separate. See git-svn(1) for more
224 information.
226 exit $exit;
227 }
229 sub version {
230 print "git-svn version $VERSION\n";
231 exit 0;
232 }
234 sub rebuild {
235 if (quiet_run(qw/git-rev-parse --verify/,"refs/remotes/$GIT_SVN^0")) {
236 copy_remote_ref();
237 }
238 $SVN_URL = shift or undef;
239 my $newest_rev = 0;
240 if ($_upgrade) {
241 sys('git-update-ref',"refs/remotes/$GIT_SVN","$GIT_SVN-HEAD");
242 } else {
243 check_upgrade_needed();
244 }
246 my $pid = open(my $rev_list,'-|');
247 defined $pid or croak $!;
248 if ($pid == 0) {
249 exec("git-rev-list","refs/remotes/$GIT_SVN") or croak $!;
250 }
251 my $latest;
252 while (<$rev_list>) {
253 chomp;
254 my $c = $_;
255 croak "Non-SHA1: $c\n" unless $c =~ /^$sha1$/o;
256 my @commit = grep(/^git-svn-id: /,`git-cat-file commit $c`);
257 next if (!@commit); # skip merges
258 my ($url, $rev, $uuid) = extract_metadata($commit[$#commit]);
259 if (!defined $rev || !$uuid) {
260 croak "Unable to extract revision or UUID from ",
261 "$c, $commit[$#commit]\n";
262 }
264 # if we merged or otherwise started elsewhere, this is
265 # how we break out of it
266 next if (defined $SVN_UUID && ($uuid ne $SVN_UUID));
267 next if (defined $SVN_URL && defined $url && ($url ne $SVN_URL));
269 unless (defined $latest) {
270 if (!$SVN_URL && !$url) {
271 croak "SVN repository location required: $url\n";
272 }
273 $SVN_URL ||= $url;
274 $SVN_UUID ||= $uuid;
275 setup_git_svn();
276 $latest = $rev;
277 }
278 revdb_set($REVDB, $rev, $c);
279 print "r$rev = $c\n";
280 $newest_rev = $rev if ($rev > $newest_rev);
281 }
282 close $rev_list or croak $?;
284 goto out if $_use_lib;
285 if (!chdir $SVN_WC) {
286 svn_cmd_checkout($SVN_URL, $latest, $SVN_WC);
287 chdir $SVN_WC or croak $!;
288 }
290 $pid = fork;
291 defined $pid or croak $!;
292 if ($pid == 0) {
293 my @svn_up = qw(svn up);
294 push @svn_up, '--ignore-externals' unless $_no_ignore_ext;
295 sys(@svn_up,"-r$newest_rev");
296 $ENV{GIT_INDEX_FILE} = $GIT_SVN_INDEX;
297 index_changes();
298 exec('git-write-tree') or croak $!;
299 }
300 waitpid $pid, 0;
301 croak $? if $?;
302 out:
303 if ($_upgrade) {
304 print STDERR <<"";
305 Keeping deprecated refs/head/$GIT_SVN-HEAD for now. Please remove it
306 when you have upgraded your tools and habits to use refs/remotes/$GIT_SVN
308 }
309 }
311 sub init {
312 my $url = shift or die "SVN repository location required " .
313 "as a command-line argument\n";
314 $url =~ s!/+$!!; # strip trailing slash
316 if (my $repo_path = shift) {
317 unless (-d $repo_path) {
318 mkpath([$repo_path]);
319 }
320 $GIT_DIR = $ENV{GIT_DIR} = $repo_path . "/.git";
321 init_vars();
322 }
324 $SVN_URL = $url;
325 unless (-d $GIT_DIR) {
326 my @init_db = ('git-init-db');
327 push @init_db, "--template=$_template" if defined $_template;
328 push @init_db, "--shared" if defined $_shared;
329 sys(@init_db);
330 }
331 setup_git_svn();
332 }
334 sub fetch {
335 check_upgrade_needed();
336 $SVN_URL ||= file_to_s("$GIT_SVN_DIR/info/url");
337 my $ret = $_use_lib ? fetch_lib(@_) : fetch_cmd(@_);
338 if ($ret->{commit} && quiet_run(qw(git-rev-parse --verify
339 refs/heads/master^0))) {
340 sys(qw(git-update-ref refs/heads/master),$ret->{commit});
341 }
342 return $ret;
343 }
345 sub fetch_cmd {
346 my (@parents) = @_;
347 my @log_args = -d $SVN_WC ? ($SVN_WC) : ($SVN_URL);
348 unless ($_revision) {
349 $_revision = -d $SVN_WC ? 'BASE:HEAD' : '0:HEAD';
350 }
351 push @log_args, "-r$_revision";
352 push @log_args, '--stop-on-copy' unless $_no_stop_copy;
354 my $svn_log = svn_log_raw(@log_args);
356 my $base = next_log_entry($svn_log) or croak "No base revision!\n";
357 # don't need last_revision from grab_base_rev() because
358 # user could've specified a different revision to skip (they
359 # didn't want to import certain revisions into git for whatever
360 # reason, so trust $base->{revision} instead.
361 my (undef, $last_commit) = svn_grab_base_rev();
362 unless (-d $SVN_WC) {
363 svn_cmd_checkout($SVN_URL,$base->{revision},$SVN_WC);
364 chdir $SVN_WC or croak $!;
365 read_uuid();
366 $last_commit = git_commit($base, @parents);
367 assert_tree($last_commit);
368 } else {
369 chdir $SVN_WC or croak $!;
370 read_uuid();
371 # looks like a user manually cp'd and svn switch'ed
372 unless ($last_commit) {
373 sys(qw/svn revert -R ./);
374 assert_svn_wc_clean($base->{revision});
375 $last_commit = git_commit($base, @parents);
376 assert_tree($last_commit);
377 }
378 }
379 my @svn_up = qw(svn up);
380 push @svn_up, '--ignore-externals' unless $_no_ignore_ext;
381 my $last = $base;
382 while (my $log_msg = next_log_entry($svn_log)) {
383 if ($last->{revision} >= $log_msg->{revision}) {
384 croak "Out of order: last >= current: ",
385 "$last->{revision} >= $log_msg->{revision}\n";
386 }
387 # Revert is needed for cases like:
388 # https://svn.musicpd.org/Jamming/trunk (r166:167), but
389 # I can't seem to reproduce something like that on a test...
390 sys(qw/svn revert -R ./);
391 assert_svn_wc_clean($last->{revision});
392 sys(@svn_up,"-r$log_msg->{revision}");
393 $last_commit = git_commit($log_msg, $last_commit, @parents);
394 $last = $log_msg;
395 }
396 close $svn_log->{fh};
397 $last->{commit} = $last_commit;
398 return $last;
399 }
401 sub fetch_lib {
402 my (@parents) = @_;
403 $SVN_URL ||= file_to_s("$GIT_SVN_DIR/info/url");
404 $SVN ||= libsvn_connect($SVN_URL);
405 my ($last_rev, $last_commit) = svn_grab_base_rev();
406 my ($base, $head) = libsvn_parse_revision($last_rev);
407 if ($base > $head) {
408 return { revision => $last_rev, commit => $last_commit }
409 }
410 my $index = set_index($GIT_SVN_INDEX);
412 # limit ourselves and also fork() since get_log won't release memory
413 # after processing a revision and SVN stuff seems to leak
414 my $inc = 1000;
415 my ($min, $max) = ($base, $head < $base+$inc ? $head : $base+$inc);
416 read_uuid();
417 if (defined $last_commit) {
418 unless (-e $GIT_SVN_INDEX) {
419 sys(qw/git-read-tree/, $last_commit);
420 }
421 chomp (my $x = `git-write-tree`);
422 my ($y) = (`git-cat-file commit $last_commit`
423 =~ /^tree ($sha1)/m);
424 if ($y ne $x) {
425 unlink $GIT_SVN_INDEX or croak $!;
426 sys(qw/git-read-tree/, $last_commit);
427 }
428 chomp ($x = `git-write-tree`);
429 if ($y ne $x) {
430 print STDERR "trees ($last_commit) $y != $x\n",
431 "Something is seriously wrong...\n";
432 }
433 }
434 while (1) {
435 # fork, because using SVN::Pool with get_log() still doesn't
436 # seem to help enough to keep memory usage down.
437 defined(my $pid = fork) or croak $!;
438 if (!$pid) {
439 $SVN::Error::handler = \&libsvn_skip_unknown_revs;
441 # Yes I'm perfectly aware that the fourth argument
442 # below is the limit revisions number. Unfortunately
443 # performance sucks with it enabled, so it's much
444 # faster to fetch revision ranges instead of relying
445 # on the limiter.
446 libsvn_get_log(libsvn_dup_ra($SVN), [''],
447 $min, $max, 0, 1, 1,
448 sub {
449 my $log_msg;
450 if ($last_commit) {
451 $log_msg = libsvn_fetch(
452 $last_commit, @_);
453 $last_commit = git_commit(
454 $log_msg,
455 $last_commit,
456 @parents);
457 } else {
458 $log_msg = libsvn_new_tree(@_);
459 $last_commit = git_commit(
460 $log_msg, @parents);
461 }
462 });
463 exit 0;
464 }
465 waitpid $pid, 0;
466 croak $? if $?;
467 ($last_rev, $last_commit) = svn_grab_base_rev();
468 last if ($max >= $head);
469 $min = $max + 1;
470 $max += $inc;
471 $max = $head if ($max > $head);
472 $SVN = libsvn_connect($SVN_URL);
473 }
474 restore_index($index);
475 return { revision => $last_rev, commit => $last_commit };
476 }
478 sub commit {
479 my (@commits) = @_;
480 check_upgrade_needed();
481 if ($_stdin || !@commits) {
482 print "Reading from stdin...\n";
483 @commits = ();
484 while (<STDIN>) {
485 if (/\b($sha1_short)\b/o) {
486 unshift @commits, $1;
487 }
488 }
489 }
490 my @revs;
491 foreach my $c (@commits) {
492 chomp(my @tmp = safe_qx('git-rev-parse',$c));
493 if (scalar @tmp == 1) {
494 push @revs, $tmp[0];
495 } elsif (scalar @tmp > 1) {
496 push @revs, reverse (safe_qx('git-rev-list',@tmp));
497 } else {
498 die "Failed to rev-parse $c\n";
499 }
500 }
501 chomp @revs;
502 $_use_lib ? commit_lib(@revs) : commit_cmd(@revs);
503 print "Done committing ",scalar @revs," revisions to SVN\n";
504 }
506 sub commit_cmd {
507 my (@revs) = @_;
509 chdir $SVN_WC or croak "Unable to chdir $SVN_WC: $!\n";
510 my $info = svn_info('.');
511 my $fetched = fetch();
512 if ($info->{Revision} != $fetched->{revision}) {
513 print STDERR "There are new revisions that were fetched ",
514 "and need to be merged (or acknowledged) ",
515 "before committing.\n";
516 exit 1;
517 }
518 $info = svn_info('.');
519 read_uuid($info);
520 my $last = $fetched;
521 foreach my $c (@revs) {
522 my $mods = svn_checkout_tree($last, $c);
523 if (scalar @$mods == 0) {
524 print "Skipping, no changes detected\n";
525 next;
526 }
527 $last = svn_commit_tree($last, $c);
528 }
529 }
531 sub commit_lib {
532 my (@revs) = @_;
533 my ($r_last, $cmt_last) = svn_grab_base_rev();
534 defined $r_last or die "Must have an existing revision to commit\n";
535 my $fetched = fetch();
536 if ($r_last != $fetched->{revision}) {
537 print STDERR "There are new revisions that were fetched ",
538 "and need to be merged (or acknowledged) ",
539 "before committing.\n",
540 "last rev: $r_last\n",
541 " current: $fetched->{revision}\n";
542 exit 1;
543 }
544 read_uuid();
545 my @lock = $SVN::Core::VERSION ge '1.2.0' ? (undef, 0) : ();
546 my $commit_msg = "$GIT_SVN_DIR/.svn-commit.tmp.$$";
548 my $repo;
549 set_svn_commit_env();
550 foreach my $c (@revs) {
551 my $log_msg = get_commit_message($c, $commit_msg);
553 # fork for each commit because there's a memory leak I
554 # can't track down... (it's probably in the SVN code)
555 defined(my $pid = open my $fh, '-|') or croak $!;
556 if (!$pid) {
557 my $ed = SVN::Git::Editor->new(
558 { r => $r_last,
559 ra => libsvn_dup_ra($SVN),
560 c => $c,
561 svn_path => $SVN->{svn_path},
562 },
563 $SVN->get_commit_editor(
564 $log_msg->{msg},
565 sub {
566 libsvn_commit_cb(
567 @_, $c,
568 $log_msg->{msg},
569 $r_last,
570 $cmt_last)
571 },
572 @lock)
573 );
574 my $mods = libsvn_checkout_tree($cmt_last, $c, $ed);
575 if (@$mods == 0) {
576 print "No changes\nr$r_last = $cmt_last\n";
577 $ed->abort_edit;
578 } else {
579 $ed->close_edit;
580 }
581 exit 0;
582 }
583 my ($r_new, $cmt_new, $no);
584 while (<$fh>) {
585 print $_;
586 chomp;
587 if (/^r(\d+) = ($sha1)$/o) {
588 ($r_new, $cmt_new) = ($1, $2);
589 } elsif ($_ eq 'No changes') {
590 $no = 1;
591 }
592 }
593 close $fh or exit 1;
594 if (! defined $r_new && ! defined $cmt_new) {
595 unless ($no) {
596 die "Failed to parse revision information\n";
597 }
598 } else {
599 ($r_last, $cmt_last) = ($r_new, $cmt_new);
600 }
601 }
602 $ENV{LC_ALL} = 'C';
603 unlink $commit_msg;
604 }
606 sub dcommit {
607 my $head = shift || 'HEAD';
608 my $gs = "refs/remotes/$GIT_SVN";
609 chomp(my @refs = safe_qx(qw/git-rev-list --no-merges/, "$gs..$head"));
610 my $last_rev;
611 foreach my $d (reverse @refs) {
612 if (quiet_run('git-rev-parse','--verify',"$d~1") != 0) {
613 die "Commit $d\n",
614 "has no parent commit, and therefore ",
615 "nothing to diff against.\n",
616 "You should be working from a repository ",
617 "originally created by git-svn\n";
618 }
619 unless (defined $last_rev) {
620 (undef, $last_rev, undef) = cmt_metadata("$d~1");
621 unless (defined $last_rev) {
622 die "Unable to extract revision information ",
623 "from commit $d~1\n";
624 }
625 }
626 if ($_dry_run) {
627 print "diff-tree $d~1 $d\n";
628 } else {
629 if (my $r = commit_diff("$d~1", $d, undef, $last_rev)) {
630 $last_rev = $r;
631 } # else: no changes, same $last_rev
632 }
633 }
634 return if $_dry_run;
635 fetch();
636 my @diff = safe_qx('git-diff-tree', $head, $gs);
637 my @finish;
638 if (@diff) {
639 @finish = qw/rebase/;
640 push @finish, qw/--merge/ if $_merge;
641 push @finish, "--strategy=$_strategy" if $_strategy;
642 print STDERR "W: $head and $gs differ, using @finish:\n", @diff;
643 } else {
644 print "No changes between current $head and $gs\n",
645 "Resetting to the latest $gs\n";
646 @finish = qw/reset --mixed/;
647 }
648 sys('git', @finish, $gs);
649 }
651 sub show_ignore {
652 $SVN_URL ||= file_to_s("$GIT_SVN_DIR/info/url");
653 $_use_lib ? show_ignore_lib() : show_ignore_cmd();
654 }
656 sub show_ignore_cmd {
657 require File::Find or die $!;
658 if (defined $_revision) {
659 die "-r/--revision option doesn't work unless the Perl SVN ",
660 "libraries are used\n";
661 }
662 chdir $SVN_WC or croak $!;
663 my %ign;
664 File::Find::find({wanted=>sub{if(lstat $_ && -d _ && -d "$_/.svn"){
665 s#^\./##;
666 @{$ign{$_}} = svn_propget_base('svn:ignore', $_);
667 }}, no_chdir=>1},'.');
669 print "\n# /\n";
670 foreach (@{$ign{'.'}}) { print '/',$_ if /\S/ }
671 delete $ign{'.'};
672 foreach my $i (sort keys %ign) {
673 print "\n# ",$i,"\n";
674 foreach (@{$ign{$i}}) { print '/',$i,'/',$_ if /\S/ }
675 }
676 }
678 sub show_ignore_lib {
679 my $repo;
680 $SVN ||= libsvn_connect($SVN_URL);
681 my $r = defined $_revision ? $_revision : $SVN->get_latest_revnum;
682 libsvn_traverse_ignore(\*STDOUT, $SVN->{svn_path}, $r);
683 }
685 sub graft_branches {
686 my $gr_file = "$GIT_DIR/info/grafts";
687 my ($grafts, $comments) = read_grafts($gr_file);
688 my $gr_sha1;
690 if (%$grafts) {
691 # temporarily disable our grafts file to make this idempotent
692 chomp($gr_sha1 = safe_qx(qw/git-hash-object -w/,$gr_file));
693 rename $gr_file, "$gr_file~$gr_sha1" or croak $!;
694 }
696 my $l_map = read_url_paths();
697 my @re = map { qr/$_/is } @_opt_m if @_opt_m;
698 unless ($_no_default_regex) {
699 push @re, (qr/\b(?:merge|merging|merged)\s+with\s+([\w\.\-]+)/i,
700 qr/\b(?:merge|merging|merged)\s+([\w\.\-]+)/i,
701 qr/\b(?:from|of)\s+([\w\.\-]+)/i );
702 }
703 foreach my $u (keys %$l_map) {
704 if (@re) {
705 foreach my $p (keys %{$l_map->{$u}}) {
706 graft_merge_msg($grafts,$l_map,$u,$p,@re);
707 }
708 }
709 unless ($_no_graft_copy) {
710 if ($_use_lib) {
711 graft_file_copy_lib($grafts,$l_map,$u);
712 } else {
713 graft_file_copy_cmd($grafts,$l_map,$u);
714 }
715 }
716 }
717 graft_tree_joins($grafts);
719 write_grafts($grafts, $comments, $gr_file);
720 unlink "$gr_file~$gr_sha1" if $gr_sha1;
721 }
723 sub multi_init {
724 my $url = shift;
725 $_trunk ||= 'trunk';
726 $_trunk =~ s#/+$##;
727 $url =~ s#/+$## if $url;
728 if ($_trunk !~ m#^[a-z\+]+://#) {
729 $_trunk = '/' . $_trunk if ($_trunk !~ m#^/#);
730 unless ($url) {
731 print STDERR "E: '$_trunk' is not a complete URL ",
732 "and a separate URL is not specified\n";
733 exit 1;
734 }
735 $_trunk = $url . $_trunk;
736 }
737 my $ch_id;
738 if ($GIT_SVN eq 'git-svn') {
739 $ch_id = 1;
740 $GIT_SVN = $ENV{GIT_SVN_ID} = 'trunk';
741 }
742 init_vars();
743 unless (-d $GIT_SVN_DIR) {
744 print "GIT_SVN_ID set to 'trunk' for $_trunk\n" if $ch_id;
745 init($_trunk);
746 sys('git-repo-config', 'svn.trunk', $_trunk);
747 }
748 complete_url_ls_init($url, $_branches, '--branches/-b', '');
749 complete_url_ls_init($url, $_tags, '--tags/-t', 'tags/');
750 }
752 sub multi_fetch {
753 # try to do trunk first, since branches/tags
754 # may be descended from it.
755 if (-e "$GIT_DIR/svn/trunk/info/url") {
756 fetch_child_id('trunk', @_);
757 }
758 rec_fetch('', "$GIT_DIR/svn", @_);
759 }
761 sub show_log {
762 my (@args) = @_;
763 my ($r_min, $r_max);
764 my $r_last = -1; # prevent dupes
765 rload_authors() if $_authors;
766 if (defined $TZ) {
767 $ENV{TZ} = $TZ;
768 } else {
769 delete $ENV{TZ};
770 }
771 if (defined $_revision) {
772 if ($_revision =~ /^(\d+):(\d+)$/) {
773 ($r_min, $r_max) = ($1, $2);
774 } elsif ($_revision =~ /^\d+$/) {
775 $r_min = $r_max = $_revision;
776 } else {
777 print STDERR "-r$_revision is not supported, use ",
778 "standard \'git log\' arguments instead\n";
779 exit 1;
780 }
781 }
783 config_pager();
784 my $pid = open(my $log,'-|');
785 defined $pid or croak $!;
786 if (!$pid) {
787 exec(git_svn_log_cmd($r_min,$r_max), @args) or croak $!;
788 }
789 run_pager();
790 my (@k, $c, $d);
792 while (<$log>) {
793 if (/^${_esc_color}commit ($sha1_short)/o) {
794 my $cmt = $1;
795 if ($c && cmt_showable($c) && $c->{r} != $r_last) {
796 $r_last = $c->{r};
797 process_commit($c, $r_min, $r_max, \@k) or
798 goto out;
799 }
800 $d = undef;
801 $c = { c => $cmt };
802 } elsif (/^${_esc_color}author (.+) (\d+) ([\-\+]?\d+)$/) {
803 get_author_info($c, $1, $2, $3);
804 } elsif (/^${_esc_color}(?:tree|parent|committer) /) {
805 # ignore
806 } elsif (/^${_esc_color}:\d{6} \d{6} $sha1_short/o) {
807 push @{$c->{raw}}, $_;
808 } elsif (/^${_esc_color}[ACRMDT]\t/) {
809 # we could add $SVN->{svn_path} here, but that requires
810 # remote access at the moment (repo_path_split)...
811 s#^(${_esc_color})([ACRMDT])\t#$1 $2 #;
812 push @{$c->{changed}}, $_;
813 } elsif (/^${_esc_color}diff /) {
814 $d = 1;
815 push @{$c->{diff}}, $_;
816 } elsif ($d) {
817 push @{$c->{diff}}, $_;
818 } elsif (/^${_esc_color} (git-svn-id:.+)$/) {
819 ($c->{url}, $c->{r}, undef) = extract_metadata($1);
820 } elsif (s/^${_esc_color} //) {
821 push @{$c->{l}}, $_;
822 }
823 }
824 if ($c && defined $c->{r} && $c->{r} != $r_last) {
825 $r_last = $c->{r};
826 process_commit($c, $r_min, $r_max, \@k);
827 }
828 if (@k) {
829 my $swap = $r_max;
830 $r_max = $r_min;
831 $r_min = $swap;
832 process_commit($_, $r_min, $r_max) foreach reverse @k;
833 }
834 out:
835 close $log;
836 print '-' x72,"\n" unless $_incremental || $_oneline;
837 }
839 sub commit_diff_usage {
840 print STDERR "Usage: $0 commit-diff <tree-ish> <tree-ish> [<URL>]\n";
841 exit 1
842 }
844 sub commit_diff {
845 if (!$_use_lib) {
846 print STDERR "commit-diff must be used with SVN libraries\n";
847 exit 1;
848 }
849 my $ta = shift or commit_diff_usage();
850 my $tb = shift or commit_diff_usage();
851 if (!eval { $SVN_URL = shift || file_to_s("$GIT_SVN_DIR/info/url") }) {
852 print STDERR "Needed URL or usable git-svn id command-line\n";
853 commit_diff_usage();
854 }
855 my $r = shift;
856 unless (defined $r) {
857 if (defined $_revision) {
858 $r = $_revision
859 } else {
860 die "-r|--revision is a required argument\n";
861 }
862 }
863 if (defined $_message && defined $_file) {
864 print STDERR "Both --message/-m and --file/-F specified ",
865 "for the commit message.\n",
866 "I have no idea what you mean\n";
867 exit 1;
868 }
869 if (defined $_file) {
870 $_message = file_to_s($_file);
871 } else {
872 $_message ||= get_commit_message($tb,
873 "$GIT_DIR/.svn-commit.tmp.$$")->{msg};
874 }
875 $SVN ||= libsvn_connect($SVN_URL);
876 if ($r eq 'HEAD') {
877 $r = $SVN->get_latest_revnum;
878 } elsif ($r !~ /^\d+$/) {
879 die "revision argument: $r not understood by git-svn\n";
880 }
881 my @lock = $SVN::Core::VERSION ge '1.2.0' ? (undef, 0) : ();
882 my $rev_committed;
883 my $ed = SVN::Git::Editor->new({ r => $r,
884 ra => libsvn_dup_ra($SVN),
885 c => $tb,
886 svn_path => $SVN->{svn_path}
887 },
888 $SVN->get_commit_editor($_message,
889 sub {
890 $rev_committed = $_[0];
891 print "Committed $_[0]\n";
892 }, @lock)
893 );
894 eval {
895 my $mods = libsvn_checkout_tree($ta, $tb, $ed);
896 if (@$mods == 0) {
897 print "No changes\n$ta == $tb\n";
898 $ed->abort_edit;
899 } else {
900 $ed->close_edit;
901 }
902 };
903 fatal "$@\n" if $@;
904 $_message = $_file = undef;
905 return $rev_committed;
906 }
908 ########################### utility functions #########################
910 sub cmt_showable {
911 my ($c) = @_;
912 return 1 if defined $c->{r};
913 if ($c->{l} && $c->{l}->[-1] eq "...\n" &&
914 $c->{a_raw} =~ /\@([a-f\d\-]+)>$/) {
915 my @msg = safe_qx(qw/git-cat-file commit/, $c->{c});
916 shift @msg while ($msg[0] ne "\n");
917 shift @msg;
918 @{$c->{l}} = grep !/^git-svn-id: /, @msg;
920 (undef, $c->{r}, undef) = extract_metadata(
921 (grep(/^git-svn-id: /, @msg))[-1]);
922 }
923 return defined $c->{r};
924 }
926 sub log_use_color {
927 return 1 if $_color;
928 my ($dc, $dcvar);
929 $dcvar = 'color.diff';
930 $dc = `git-repo-config --get $dcvar`;
931 if ($dc eq '') {
932 # nothing at all; fallback to "diff.color"
933 $dcvar = 'diff.color';
934 $dc = `git-repo-config --get $dcvar`;
935 }
936 chomp($dc);
937 if ($dc eq 'auto') {
938 my $pc;
939 $pc = `git-repo-config --get color.pager`;
940 if ($pc eq '') {
941 # does not have it -- fallback to pager.color
942 $pc = `git-repo-config --bool --get pager.color`;
943 }
944 else {
945 $pc = `git-repo-config --bool --get color.pager`;
946 if ($?) {
947 $pc = 'false';
948 }
949 }
950 chomp($pc);
951 if (-t *STDOUT || (defined $_pager && $pc eq 'true')) {
952 return ($ENV{TERM} && $ENV{TERM} ne 'dumb');
953 }
954 return 0;
955 }
956 return 0 if $dc eq 'never';
957 return 1 if $dc eq 'always';
958 chomp($dc = `git-repo-config --bool --get $dcvar`);
959 return ($dc eq 'true');
960 }
962 sub git_svn_log_cmd {
963 my ($r_min, $r_max) = @_;
964 my @cmd = (qw/git-log --abbrev-commit --pretty=raw
965 --default/, "refs/remotes/$GIT_SVN");
966 push @cmd, '-r' unless $_non_recursive;
967 push @cmd, qw/--raw --name-status/ if $_verbose;
968 push @cmd, '--color' if log_use_color();
969 return @cmd unless defined $r_max;
970 if ($r_max == $r_min) {
971 push @cmd, '--max-count=1';
972 if (my $c = revdb_get($REVDB, $r_max)) {
973 push @cmd, $c;
974 }
975 } else {
976 my ($c_min, $c_max);
977 $c_max = revdb_get($REVDB, $r_max);
978 $c_min = revdb_get($REVDB, $r_min);
979 if (defined $c_min && defined $c_max) {
980 if ($r_max > $r_max) {
981 push @cmd, "$c_min..$c_max";
982 } else {
983 push @cmd, "$c_max..$c_min";
984 }
985 } elsif ($r_max > $r_min) {
986 push @cmd, $c_max;
987 } else {
988 push @cmd, $c_min;
989 }
990 }
991 return @cmd;
992 }
994 sub fetch_child_id {
995 my $id = shift;
996 print "Fetching $id\n";
997 my $ref = "$GIT_DIR/refs/remotes/$id";
998 defined(my $pid = open my $fh, '-|') or croak $!;
999 if (!$pid) {
1000 $_repack = undef;
1001 $GIT_SVN = $ENV{GIT_SVN_ID} = $id;
1002 init_vars();
1003 fetch(@_);
1004 exit 0;
1005 }
1006 while (<$fh>) {
1007 print $_;
1008 check_repack() if (/^r\d+ = $sha1/);
1009 }
1010 close $fh or croak $?;
1011 }
1013 sub rec_fetch {
1014 my ($pfx, $p, @args) = @_;
1015 my @dir;
1016 foreach (sort <$p/*>) {
1017 if (-r "$_/info/url") {
1018 $pfx .= '/' if $pfx && $pfx !~ m!/$!;
1019 my $id = $pfx . basename $_;
1020 next if $id eq 'trunk';
1021 fetch_child_id($id, @args);
1022 } elsif (-d $_) {
1023 push @dir, $_;
1024 }
1025 }
1026 foreach (@dir) {
1027 my $x = $_;
1028 $x =~ s!^\Q$GIT_DIR\E/svn/!!;
1029 rec_fetch($x, $_);
1030 }
1031 }
1033 sub complete_url_ls_init {
1034 my ($url, $var, $switch, $pfx) = @_;
1035 unless ($var) {
1036 print STDERR "W: $switch not specified\n";
1037 return;
1038 }
1039 $var =~ s#/+$##;
1040 if ($var !~ m#^[a-z\+]+://#) {
1041 $var = '/' . $var if ($var !~ m#^/#);
1042 unless ($url) {
1043 print STDERR "E: '$var' is not a complete URL ",
1044 "and a separate URL is not specified\n";
1045 exit 1;
1046 }
1047 $var = $url . $var;
1048 }
1049 chomp(my @ls = $_use_lib ? libsvn_ls_fullurl($var)
1050 : safe_qx(qw/svn ls --non-interactive/, $var));
1051 my $old = $GIT_SVN;
1052 defined(my $pid = fork) or croak $!;
1053 if (!$pid) {
1054 foreach my $u (map { "$var/$_" } (grep m!/$!, @ls)) {
1055 $u =~ s#/+$##;
1056 if ($u !~ m!\Q$var\E/(.+)$!) {
1057 print STDERR "W: Unrecognized URL: $u\n";
1058 die "This should never happen\n";
1059 }
1060 # don't try to init already existing refs
1061 my $id = $pfx.$1;
1062 $GIT_SVN = $ENV{GIT_SVN_ID} = $id;
1063 init_vars();
1064 unless (-d $GIT_SVN_DIR) {
1065 print "init $u => $id\n";
1066 init($u);
1067 }
1068 }
1069 exit 0;
1070 }
1071 waitpid $pid, 0;
1072 croak $? if $?;
1073 my ($n) = ($switch =~ /^--(\w+)/);
1074 sys('git-repo-config', "svn.$n", $var);
1075 }
1077 sub common_prefix {
1078 my $paths = shift;
1079 my %common;
1080 foreach (@$paths) {
1081 my @tmp = split m#/#, $_;
1082 my $p = '';
1083 while (my $x = shift @tmp) {
1084 $p .= "/$x";
1085 $common{$p} ||= 0;
1086 $common{$p}++;
1087 }
1088 }
1089 foreach (sort {length $b <=> length $a} keys %common) {
1090 if ($common{$_} == @$paths) {
1091 return $_;
1092 }
1093 }
1094 return '';
1095 }
1097 # grafts set here are 'stronger' in that they're based on actual tree
1098 # matches, and won't be deleted from merge-base checking in write_grafts()
1099 sub graft_tree_joins {
1100 my $grafts = shift;
1101 map_tree_joins() if (@_branch_from && !%tree_map);
1102 return unless %tree_map;
1104 git_svn_each(sub {
1105 my $i = shift;
1106 defined(my $pid = open my $fh, '-|') or croak $!;
1107 if (!$pid) {
1108 exec qw/git-rev-list --pretty=raw/,
1109 "refs/remotes/$i" or croak $!;
1110 }
1111 while (<$fh>) {
1112 next unless /^commit ($sha1)$/o;
1113 my $c = $1;
1114 my ($t) = (<$fh> =~ /^tree ($sha1)$/o);
1115 next unless $tree_map{$t};
1117 my $l;
1118 do {
1119 $l = readline $fh;
1120 } until ($l =~ /^committer (?:.+) (\d+) ([\-\+]?\d+)$/);
1122 my ($s, $tz) = ($1, $2);
1123 if ($tz =~ s/^\+//) {
1124 $s += tz_to_s_offset($tz);
1125 } elsif ($tz =~ s/^\-//) {
1126 $s -= tz_to_s_offset($tz);
1127 }
1129 my ($url_a, $r_a, $uuid_a) = cmt_metadata($c);
1131 foreach my $p (@{$tree_map{$t}}) {
1132 next if $p eq $c;
1133 my $mb = eval {
1134 safe_qx('git-merge-base', $c, $p)
1135 };
1136 next unless ($@ || $?);
1137 if (defined $r_a) {
1138 # see if SVN says it's a relative
1139 my ($url_b, $r_b, $uuid_b) =
1140 cmt_metadata($p);
1141 next if (defined $url_b &&
1142 defined $url_a &&
1143 ($url_a eq $url_b) &&
1144 ($uuid_a eq $uuid_b));
1145 if ($uuid_a eq $uuid_b) {
1146 if ($r_b < $r_a) {
1147 $grafts->{$c}->{$p} = 2;
1148 next;
1149 } elsif ($r_b > $r_a) {
1150 $grafts->{$p}->{$c} = 2;
1151 next;
1152 }
1153 }
1154 }
1155 my $ct = get_commit_time($p);
1156 if ($ct < $s) {
1157 $grafts->{$c}->{$p} = 2;
1158 } elsif ($ct > $s) {
1159 $grafts->{$p}->{$c} = 2;
1160 }
1161 # what should we do when $ct == $s ?
1162 }
1163 }
1164 close $fh or croak $?;
1165 });
1166 }
1168 # this isn't funky-filename safe, but good enough for now...
1169 sub graft_file_copy_cmd {
1170 my ($grafts, $l_map, $u) = @_;
1171 my $paths = $l_map->{$u};
1172 my $pfx = common_prefix([keys %$paths]);
1173 $SVN_URL ||= $u.$pfx;
1174 my $pid = open my $fh, '-|';
1175 defined $pid or croak $!;
1176 unless ($pid) {
1177 my @exec = qw/svn log -v/;
1178 push @exec, "-r$_revision" if defined $_revision;
1179 exec @exec, $u.$pfx or croak $!;
1180 }
1181 my ($r, $mp) = (undef, undef);
1182 while (<$fh>) {
1183 chomp;
1184 if (/^\-{72}$/) {
1185 $mp = $r = undef;
1186 } elsif (/^r(\d+) \| /) {
1187 $r = $1 unless defined $r;
1188 } elsif (/^Changed paths:/) {
1189 $mp = 1;
1190 } elsif ($mp && m#^ [AR] /(\S.*?) \(from /(\S+?):(\d+)\)$#) {
1191 my ($p1, $p0, $r0) = ($1, $2, $3);
1192 my $c = find_graft_path_commit($paths, $p1, $r);
1193 next unless $c;
1194 find_graft_path_parents($grafts, $paths, $c, $p0, $r0);
1195 }
1196 }
1197 }
1199 sub graft_file_copy_lib {
1200 my ($grafts, $l_map, $u) = @_;
1201 my $tree_paths = $l_map->{$u};
1202 my $pfx = common_prefix([keys %$tree_paths]);
1203 my ($repo, $path) = repo_path_split($u.$pfx);
1204 $SVN = libsvn_connect($repo);
1206 my ($base, $head) = libsvn_parse_revision();
1207 my $inc = 1000;
1208 my ($min, $max) = ($base, $head < $base+$inc ? $head : $base+$inc);
1209 my $eh = $SVN::Error::handler;
1210 $SVN::Error::handler = \&libsvn_skip_unknown_revs;
1211 while (1) {
1212 my $pool = SVN::Pool->new;
1213 libsvn_get_log(libsvn_dup_ra($SVN), [$path],
1214 $min, $max, 0, 2, 1,
1215 sub {
1216 libsvn_graft_file_copies($grafts, $tree_paths,
1217 $path, @_);
1218 }, $pool);
1219 $pool->clear;
1220 last if ($max >= $head);
1221 $min = $max + 1;
1222 $max += $inc;
1223 $max = $head if ($max > $head);
1224 }
1225 $SVN::Error::handler = $eh;
1226 }
1228 sub process_merge_msg_matches {
1229 my ($grafts, $l_map, $u, $p, $c, @matches) = @_;
1230 my (@strong, @weak);
1231 foreach (@matches) {
1232 # merging with ourselves is not interesting
1233 next if $_ eq $p;
1234 if ($l_map->{$u}->{$_}) {
1235 push @strong, $_;
1236 } else {
1237 push @weak, $_;
1238 }
1239 }
1240 foreach my $w (@weak) {
1241 last if @strong;
1242 # no exact match, use branch name as regexp.
1243 my $re = qr/\Q$w\E/i;
1244 foreach (keys %{$l_map->{$u}}) {
1245 if (/$re/) {
1246 push @strong, $l_map->{$u}->{$_};
1247 last;
1248 }
1249 }
1250 last if @strong;
1251 $w = basename($w);
1252 $re = qr/\Q$w\E/i;
1253 foreach (keys %{$l_map->{$u}}) {
1254 if (/$re/) {
1255 push @strong, $l_map->{$u}->{$_};
1256 last;
1257 }
1258 }
1259 }
1260 my ($rev) = ($c->{m} =~ /^git-svn-id:\s(?:\S+?)\@(\d+)
1261 \s(?:[a-f\d\-]+)$/xsm);
1262 unless (defined $rev) {
1263 ($rev) = ($c->{m} =~/^git-svn-id:\s(\d+)
1264 \@(?:[a-f\d\-]+)/xsm);
1265 return unless defined $rev;
1266 }
1267 foreach my $m (@strong) {
1268 my ($r0, $s0) = find_rev_before($rev, $m, 1);
1269 $grafts->{$c->{c}}->{$s0} = 1 if defined $s0;
1270 }
1271 }
1273 sub graft_merge_msg {
1274 my ($grafts, $l_map, $u, $p, @re) = @_;
1276 my $x = $l_map->{$u}->{$p};
1277 my $rl = rev_list_raw($x);
1278 while (my $c = next_rev_list_entry($rl)) {
1279 foreach my $re (@re) {
1280 my (@br) = ($c->{m} =~ /$re/g);
1281 next unless @br;
1282 process_merge_msg_matches($grafts,$l_map,$u,$p,$c,@br);
1283 }
1284 }
1285 }
1287 sub read_uuid {
1288 return if $SVN_UUID;
1289 if ($_use_lib) {
1290 my $pool = SVN::Pool->new;
1291 $SVN_UUID = $SVN->get_uuid($pool);
1292 $pool->clear;
1293 } else {
1294 my $info = shift || svn_info('.');
1295 $SVN_UUID = $info->{'Repository UUID'} or
1296 croak "Repository UUID unreadable\n";
1297 }
1298 }
1300 sub quiet_run {
1301 my $pid = fork;
1302 defined $pid or croak $!;
1303 if (!$pid) {
1304 open my $null, '>', '/dev/null' or croak $!;
1305 open STDERR, '>&', $null or croak $!;
1306 open STDOUT, '>&', $null or croak $!;
1307 exec @_ or croak $!;
1308 }
1309 waitpid $pid, 0;
1310 return $?;
1311 }
1313 sub repo_path_split {
1314 my $full_url = shift;
1315 $full_url =~ s#/+$##;
1317 foreach (@repo_path_split_cache) {
1318 if ($full_url =~ s#$_##) {
1319 my $u = $1;
1320 $full_url =~ s#^/+##;
1321 return ($u, $full_url);
1322 }
1323 }
1324 if ($_use_lib) {
1325 my $tmp = libsvn_connect($full_url);
1326 return ($tmp->{repos_root}, $tmp->{svn_path});
1327 } else {
1328 my ($url, $path) = ($full_url =~ m!^([a-z\+]+://[^/]*)(.*)$!i);
1329 $path =~ s#^/+##;
1330 my @paths = split(m#/+#, $path);
1331 while (quiet_run(qw/svn ls --non-interactive/, $url)) {
1332 my $n = shift @paths || last;
1333 $url .= "/$n";
1334 }
1335 push @repo_path_split_cache, qr/^(\Q$url\E)/;
1336 $path = join('/',@paths);
1337 return ($url, $path);
1338 }
1339 }
1341 sub setup_git_svn {
1342 defined $SVN_URL or croak "SVN repository location required\n";
1343 unless (-d $GIT_DIR) {
1344 croak "GIT_DIR=$GIT_DIR does not exist!\n";
1345 }
1346 mkpath([$GIT_SVN_DIR]);
1347 mkpath(["$GIT_SVN_DIR/info"]);
1348 open my $fh, '>>',$REVDB or croak $!;
1349 close $fh;
1350 s_to_file($SVN_URL,"$GIT_SVN_DIR/info/url");
1352 }
1354 sub assert_svn_wc_clean {
1355 return if $_use_lib;
1356 my ($svn_rev) = @_;
1357 croak "$svn_rev is not an integer!\n" unless ($svn_rev =~ /^\d+$/);
1358 my $lcr = svn_info('.')->{'Last Changed Rev'};
1359 if ($svn_rev != $lcr) {
1360 print STDERR "Checking for copy-tree ... ";
1361 my @diff = grep(/^Index: /,(safe_qx(qw(svn diff),
1362 "-r$lcr:$svn_rev")));
1363 if (@diff) {
1364 croak "Nope! Expected r$svn_rev, got r$lcr\n";
1365 } else {
1366 print STDERR "OK!\n";
1367 }
1368 }
1369 my @status = grep(!/^Performing status on external/,(`svn status`));
1370 @status = grep(!/^\s*$/,@status);
1371 @status = grep(!/^X/,@status) if $_no_ignore_ext;
1372 if (scalar @status) {
1373 print STDERR "Tree ($SVN_WC) is not clean:\n";
1374 print STDERR $_ foreach @status;
1375 croak;
1376 }
1377 }
1379 sub get_tree_from_treeish {
1380 my ($treeish) = @_;
1381 croak "Not a sha1: $treeish\n" unless $treeish =~ /^$sha1$/o;
1382 chomp(my $type = `git-cat-file -t $treeish`);
1383 my $expected;
1384 while ($type eq 'tag') {
1385 chomp(($treeish, $type) = `git-cat-file tag $treeish`);
1386 }
1387 if ($type eq 'commit') {
1388 $expected = (grep /^tree /,`git-cat-file commit $treeish`)[0];
1389 ($expected) = ($expected =~ /^tree ($sha1)$/);
1390 die "Unable to get tree from $treeish\n" unless $expected;
1391 } elsif ($type eq 'tree') {
1392 $expected = $treeish;
1393 } else {
1394 die "$treeish is a $type, expected tree, tag or commit\n";
1395 }
1396 return $expected;
1397 }
1399 sub assert_tree {
1400 return if $_use_lib;
1401 my ($treeish) = @_;
1402 my $expected = get_tree_from_treeish($treeish);
1404 my $tmpindex = $GIT_SVN_INDEX.'.assert-tmp';
1405 if (-e $tmpindex) {
1406 unlink $tmpindex or croak $!;
1407 }
1408 my $old_index = set_index($tmpindex);
1409 index_changes(1);
1410 chomp(my $tree = `git-write-tree`);
1411 restore_index($old_index);
1412 if ($tree ne $expected) {
1413 croak "Tree mismatch, Got: $tree, Expected: $expected\n";
1414 }
1415 unlink $tmpindex;
1416 }
1418 sub parse_diff_tree {
1419 my $diff_fh = shift;
1420 local $/ = "\0";
1421 my $state = 'meta';
1422 my @mods;
1423 while (<$diff_fh>) {
1424 chomp $_; # this gets rid of the trailing "\0"
1425 if ($state eq 'meta' && /^:(\d{6})\s(\d{6})\s
1426 $sha1\s($sha1)\s([MTCRAD])\d*$/xo) {
1427 push @mods, { mode_a => $1, mode_b => $2,
1428 sha1_b => $3, chg => $4 };
1429 if ($4 =~ /^(?:C|R)$/) {
1430 $state = 'file_a';
1431 } else {
1432 $state = 'file_b';
1433 }
1434 } elsif ($state eq 'file_a') {
1435 my $x = $mods[$#mods] or croak "Empty array\n";
1436 if ($x->{chg} !~ /^(?:C|R)$/) {
1437 croak "Error parsing $_, $x->{chg}\n";
1438 }
1439 $x->{file_a} = $_;
1440 $state = 'file_b';
1441 } elsif ($state eq 'file_b') {
1442 my $x = $mods[$#mods] or croak "Empty array\n";
1443 if (exists $x->{file_a} && $x->{chg} !~ /^(?:C|R)$/) {
1444 croak "Error parsing $_, $x->{chg}\n";
1445 }
1446 if (!exists $x->{file_a} && $x->{chg} =~ /^(?:C|R)$/) {
1447 croak "Error parsing $_, $x->{chg}\n";
1448 }
1449 $x->{file_b} = $_;
1450 $state = 'meta';
1451 } else {
1452 croak "Error parsing $_\n";
1453 }
1454 }
1455 close $diff_fh or croak $?;
1457 return \@mods;
1458 }
1460 sub svn_check_prop_executable {
1461 my $m = shift;
1462 return if -l $m->{file_b};
1463 if ($m->{mode_b} =~ /755$/) {
1464 chmod((0755 &~ umask),$m->{file_b}) or croak $!;
1465 if ($m->{mode_a} !~ /755$/) {
1466 sys(qw(svn propset svn:executable 1), $m->{file_b});
1467 }
1468 -x $m->{file_b} or croak "$m->{file_b} is not executable!\n";
1469 } elsif ($m->{mode_b} !~ /755$/ && $m->{mode_a} =~ /755$/) {
1470 sys(qw(svn propdel svn:executable), $m->{file_b});
1471 chmod((0644 &~ umask),$m->{file_b}) or croak $!;
1472 -x $m->{file_b} and croak "$m->{file_b} is executable!\n";
1473 }
1474 }
1476 sub svn_ensure_parent_path {
1477 my $dir_b = dirname(shift);
1478 svn_ensure_parent_path($dir_b) if ($dir_b ne File::Spec->curdir);
1479 mkpath([$dir_b]) unless (-d $dir_b);
1480 sys(qw(svn add -N), $dir_b) unless (-d "$dir_b/.svn");
1481 }
1483 sub precommit_check {
1484 my $mods = shift;
1485 my (%rm_file, %rmdir_check, %added_check);
1487 my %o = ( D => 0, R => 1, C => 2, A => 3, M => 3, T => 3 );
1488 foreach my $m (sort { $o{$a->{chg}} <=> $o{$b->{chg}} } @$mods) {
1489 if ($m->{chg} eq 'R') {
1490 if (-d $m->{file_b}) {
1491 err_dir_to_file("$m->{file_a} => $m->{file_b}");
1492 }
1493 # dir/$file => dir/file/$file
1494 my $dirname = dirname($m->{file_b});
1495 while ($dirname ne File::Spec->curdir) {
1496 if ($dirname ne $m->{file_a}) {
1497 $dirname = dirname($dirname);
1498 next;
1499 }
1500 err_file_to_dir("$m->{file_a} => $m->{file_b}");
1501 }
1502 # baz/zzz => baz (baz is a file)
1503 $dirname = dirname($m->{file_a});
1504 while ($dirname ne File::Spec->curdir) {
1505 if ($dirname ne $m->{file_b}) {
1506 $dirname = dirname($dirname);
1507 next;
1508 }
1509 err_dir_to_file("$m->{file_a} => $m->{file_b}");
1510 }
1511 }
1512 if ($m->{chg} =~ /^(D|R)$/) {
1513 my $t = $1 eq 'D' ? 'file_b' : 'file_a';
1514 $rm_file{ $m->{$t} } = 1;
1515 my $dirname = dirname( $m->{$t} );
1516 my $basename = basename( $m->{$t} );
1517 $rmdir_check{$dirname}->{$basename} = 1;
1518 } elsif ($m->{chg} =~ /^(?:A|C)$/) {
1519 if (-d $m->{file_b}) {
1520 err_dir_to_file($m->{file_b});
1521 }
1522 my $dirname = dirname( $m->{file_b} );
1523 my $basename = basename( $m->{file_b} );
1524 $added_check{$dirname}->{$basename} = 1;
1525 while ($dirname ne File::Spec->curdir) {
1526 if ($rm_file{$dirname}) {
1527 err_file_to_dir($m->{file_b});
1528 }
1529 $dirname = dirname $dirname;
1530 }
1531 }
1532 }
1533 return (\%rmdir_check, \%added_check);
1535 sub err_dir_to_file {
1536 my $file = shift;
1537 print STDERR "Node change from directory to file ",
1538 "is not supported by Subversion: ",$file,"\n";
1539 exit 1;
1540 }
1541 sub err_file_to_dir {
1542 my $file = shift;
1543 print STDERR "Node change from file to directory ",
1544 "is not supported by Subversion: ",$file,"\n";
1545 exit 1;
1546 }
1547 }
1550 sub get_diff {
1551 my ($from, $treeish) = @_;
1552 assert_tree($from);
1553 print "diff-tree $from $treeish\n";
1554 my $pid = open my $diff_fh, '-|';
1555 defined $pid or croak $!;
1556 if ($pid == 0) {
1557 my @diff_tree = qw(git-diff-tree -z -r);
1558 if ($_cp_similarity) {
1559 push @diff_tree, "-C$_cp_similarity";
1560 } else {
1561 push @diff_tree, '-C';
1562 }
1563 push @diff_tree, '--find-copies-harder' if $_find_copies_harder;
1564 push @diff_tree, "-l$_l" if defined $_l;
1565 exec(@diff_tree, $from, $treeish) or croak $!;
1566 }
1567 return parse_diff_tree($diff_fh);
1568 }
1570 sub svn_checkout_tree {
1571 my ($from, $treeish) = @_;
1572 my $mods = get_diff($from->{commit}, $treeish);
1573 return $mods unless (scalar @$mods);
1574 my ($rm, $add) = precommit_check($mods);
1576 my %o = ( D => 1, R => 0, C => -1, A => 3, M => 3, T => 3 );
1577 foreach my $m (sort { $o{$a->{chg}} <=> $o{$b->{chg}} } @$mods) {
1578 if ($m->{chg} eq 'C') {
1579 svn_ensure_parent_path( $m->{file_b} );
1580 sys(qw(svn cp), $m->{file_a}, $m->{file_b});
1581 apply_mod_line_blob($m);
1582 svn_check_prop_executable($m);
1583 } elsif ($m->{chg} eq 'D') {
1584 sys(qw(svn rm --force), $m->{file_b});
1585 } elsif ($m->{chg} eq 'R') {
1586 svn_ensure_parent_path( $m->{file_b} );
1587 sys(qw(svn mv --force), $m->{file_a}, $m->{file_b});
1588 apply_mod_line_blob($m);
1589 svn_check_prop_executable($m);
1590 } elsif ($m->{chg} eq 'M') {
1591 apply_mod_line_blob($m);
1592 svn_check_prop_executable($m);
1593 } elsif ($m->{chg} eq 'T') {
1594 svn_check_prop_executable($m);
1595 apply_mod_line_blob($m);
1596 if ($m->{mode_a} =~ /^120/ && $m->{mode_b} !~ /^120/) {
1597 sys(qw(svn propdel svn:special), $m->{file_b});
1598 } else {
1599 sys(qw(svn propset svn:special *),$m->{file_b});
1600 }
1601 } elsif ($m->{chg} eq 'A') {
1602 svn_ensure_parent_path( $m->{file_b} );
1603 apply_mod_line_blob($m);
1604 sys(qw(svn add), $m->{file_b});
1605 svn_check_prop_executable($m);
1606 } else {
1607 croak "Invalid chg: $m->{chg}\n";
1608 }
1609 }
1611 assert_tree($treeish);
1612 if ($_rmdir) { # remove empty directories
1613 handle_rmdir($rm, $add);
1614 }
1615 assert_tree($treeish);
1616 return $mods;
1617 }
1619 sub libsvn_checkout_tree {
1620 my ($from, $treeish, $ed) = @_;
1621 my $mods = get_diff($from, $treeish);
1622 return $mods unless (scalar @$mods);
1623 my %o = ( D => 1, R => 0, C => -1, A => 3, M => 3, T => 3 );
1624 foreach my $m (sort { $o{$a->{chg}} <=> $o{$b->{chg}} } @$mods) {
1625 my $f = $m->{chg};
1626 if (defined $o{$f}) {
1627 $ed->$f($m, $_q);
1628 } else {
1629 croak "Invalid change type: $f\n";
1630 }
1631 }
1632 $ed->rmdirs($_q) if $_rmdir;
1633 return $mods;
1634 }
1636 # svn ls doesn't work with respect to the current working tree, but what's
1637 # in the repository. There's not even an option for it... *sigh*
1638 # (added files don't show up and removed files remain in the ls listing)
1639 sub svn_ls_current {
1640 my ($dir, $rm, $add) = @_;
1641 chomp(my @ls = safe_qx('svn','ls',$dir));
1642 my @ret = ();
1643 foreach (@ls) {
1644 s#/$##; # trailing slashes are evil
1645 push @ret, $_ unless $rm->{$dir}->{$_};
1646 }
1647 if (exists $add->{$dir}) {
1648 push @ret, keys %{$add->{$dir}};
1649 }
1650 return \@ret;
1651 }
1653 sub handle_rmdir {
1654 my ($rm, $add) = @_;
1656 foreach my $dir (sort {length $b <=> length $a} keys %$rm) {
1657 my $ls = svn_ls_current($dir, $rm, $add);
1658 next if (scalar @$ls);
1659 sys(qw(svn rm --force),$dir);
1661 my $dn = dirname $dir;
1662 $rm->{ $dn }->{ basename $dir } = 1;
1663 $ls = svn_ls_current($dn, $rm, $add);
1664 while (scalar @$ls == 0 && $dn ne File::Spec->curdir) {
1665 sys(qw(svn rm --force),$dn);
1666 $dir = basename $dn;
1667 $dn = dirname $dn;
1668 $rm->{ $dn }->{ $dir } = 1;
1669 $ls = svn_ls_current($dn, $rm, $add);
1670 }
1671 }
1672 }
1674 sub get_commit_message {
1675 my ($commit, $commit_msg) = (@_);
1676 my %log_msg = ( msg => '' );
1677 open my $msg, '>', $commit_msg or croak $!;
1679 chomp(my $type = `git-cat-file -t $commit`);
1680 if ($type eq 'commit' || $type eq 'tag') {
1681 my $pid = open my $msg_fh, '-|';
1682 defined $pid or croak $!;
1684 if ($pid == 0) {
1685 exec('git-cat-file', $type, $commit) or croak $!;
1686 }
1687 my $in_msg = 0;
1688 while (<$msg_fh>) {
1689 if (!$in_msg) {
1690 $in_msg = 1 if (/^\s*$/);
1691 } elsif (/^git-svn-id: /) {
1692 # skip this, we regenerate the correct one
1693 # on re-fetch anyways
1694 } else {
1695 print $msg $_ or croak $!;
1696 }
1697 }
1698 close $msg_fh or croak $?;
1699 }
1700 close $msg or croak $!;
1702 if ($_edit || ($type eq 'tree')) {
1703 my $editor = $ENV{VISUAL} || $ENV{EDITOR} || 'vi';
1704 system($editor, $commit_msg);
1705 }
1707 # file_to_s removes all trailing newlines, so just use chomp() here:
1708 open $msg, '<', $commit_msg or croak $!;
1709 { local $/; chomp($log_msg{msg} = <$msg>); }
1710 close $msg or croak $!;
1712 return \%log_msg;
1713 }
1715 sub set_svn_commit_env {
1716 if (defined $LC_ALL) {
1717 $ENV{LC_ALL} = $LC_ALL;
1718 } else {
1719 delete $ENV{LC_ALL};
1720 }
1721 }
1723 sub svn_commit_tree {
1724 my ($last, $commit) = @_;
1725 my $commit_msg = "$GIT_SVN_DIR/.svn-commit.tmp.$$";
1726 my $log_msg = get_commit_message($commit, $commit_msg);
1727 my ($oneline) = ($log_msg->{msg} =~ /([^\n\r]+)/);
1728 print "Committing $commit: $oneline\n";
1730 set_svn_commit_env();
1731 my @ci_output = safe_qx(qw(svn commit -F),$commit_msg);
1732 $ENV{LC_ALL} = 'C';
1733 unlink $commit_msg;
1734 my ($committed) = ($ci_output[$#ci_output] =~ /(\d+)/);
1735 if (!defined $committed) {
1736 my $out = join("\n",@ci_output);
1737 print STDERR "W: Trouble parsing \`svn commit' output:\n\n",
1738 $out, "\n\nAssuming English locale...";
1739 ($committed) = ($out =~ /^Committed revision \d+\./sm);
1740 defined $committed or die " FAILED!\n",
1741 "Commit output failed to parse committed revision!\n",
1742 print STDERR " OK\n";
1743 }
1745 my @svn_up = qw(svn up);
1746 push @svn_up, '--ignore-externals' unless $_no_ignore_ext;
1747 if ($_optimize_commits && ($committed == ($last->{revision} + 1))) {
1748 push @svn_up, "-r$committed";
1749 sys(@svn_up);
1750 my $info = svn_info('.');
1751 my $date = $info->{'Last Changed Date'} or die "Missing date\n";
1752 if ($info->{'Last Changed Rev'} != $committed) {
1753 croak "$info->{'Last Changed Rev'} != $committed\n"
1754 }
1755 my ($Y,$m,$d,$H,$M,$S,$tz) = ($date =~
1756 /(\d{4})\-(\d\d)\-(\d\d)\s
1757 (\d\d)\:(\d\d)\:(\d\d)\s([\-\+]\d+)/x)
1758 or croak "Failed to parse date: $date\n";
1759 $log_msg->{date} = "$tz $Y-$m-$d $H:$M:$S";
1760 $log_msg->{author} = $info->{'Last Changed Author'};
1761 $log_msg->{revision} = $committed;
1762 $log_msg->{msg} .= "\n";
1763 $log_msg->{parents} = [ $last->{commit} ];
1764 $log_msg->{commit} = git_commit($log_msg, $commit);
1765 return $log_msg;
1766 }
1767 # resync immediately
1768 push @svn_up, "-r$last->{revision}";
1769 sys(@svn_up);
1770 return fetch("$committed=$commit");
1771 }
1773 sub rev_list_raw {
1774 my (@args) = @_;
1775 my $pid = open my $fh, '-|';
1776 defined $pid or croak $!;
1777 if (!$pid) {
1778 exec(qw/git-rev-list --pretty=raw/, @args) or croak $!;
1779 }
1780 return { fh => $fh, t => { } };
1781 }
1783 sub next_rev_list_entry {
1784 my $rl = shift;
1785 my $fh = $rl->{fh};
1786 my $x = $rl->{t};
1787 while (<$fh>) {
1788 if (/^commit ($sha1)$/o) {
1789 if ($x->{c}) {
1790 $rl->{t} = { c => $1 };
1791 return $x;
1792 } else {
1793 $x->{c} = $1;
1794 }
1795 } elsif (/^parent ($sha1)$/o) {
1796 $x->{p}->{$1} = 1;
1797 } elsif (s/^ //) {
1798 $x->{m} ||= '';
1799 $x->{m} .= $_;
1800 }
1801 }
1802 return ($x != $rl->{t}) ? $x : undef;
1803 }
1805 # read the entire log into a temporary file (which is removed ASAP)
1806 # and store the file handle + parser state
1807 sub svn_log_raw {
1808 my (@log_args) = @_;
1809 my $log_fh = IO::File->new_tmpfile or croak $!;
1810 my $pid = fork;
1811 defined $pid or croak $!;
1812 if (!$pid) {
1813 open STDOUT, '>&', $log_fh or croak $!;
1814 exec (qw(svn log), @log_args) or croak $!
1815 }
1816 waitpid $pid, 0;
1817 croak $? if $?;
1818 seek $log_fh, 0, 0 or croak $!;
1819 return { state => 'sep', fh => $log_fh };
1820 }
1822 sub next_log_entry {
1823 my $log = shift; # retval of svn_log_raw()
1824 my $ret = undef;
1825 my $fh = $log->{fh};
1827 while (<$fh>) {
1828 chomp;
1829 if (/^\-{72}$/) {
1830 if ($log->{state} eq 'msg') {
1831 if ($ret->{lines}) {
1832 $ret->{msg} .= $_."\n";
1833 unless(--$ret->{lines}) {
1834 $log->{state} = 'sep';
1835 }
1836 } else {
1837 croak "Log parse error at: $_\n",
1838 $ret->{revision},
1839 "\n";
1840 }
1841 next;
1842 }
1843 if ($log->{state} ne 'sep') {
1844 croak "Log parse error at: $_\n",
1845 "state: $log->{state}\n",
1846 $ret->{revision},
1847 "\n";
1848 }
1849 $log->{state} = 'rev';
1851 # if we have an empty log message, put something there:
1852 if ($ret) {
1853 $ret->{msg} ||= "\n";
1854 delete $ret->{lines};
1855 return $ret;
1856 }
1857 next;
1858 }
1859 if ($log->{state} eq 'rev' && s/^r(\d+)\s*\|\s*//) {
1860 my $rev = $1;
1861 my ($author, $date, $lines) = split(/\s*\|\s*/, $_, 3);
1862 ($lines) = ($lines =~ /(\d+)/);
1863 $date = '1970-01-01 00:00:00 +0000'
1864 if ($_ignore_nodate && $date eq '(no date)');
1865 my ($Y,$m,$d,$H,$M,$S,$tz) = ($date =~
1866 /(\d{4})\-(\d\d)\-(\d\d)\s
1867 (\d\d)\:(\d\d)\:(\d\d)\s([\-\+]\d+)/x)
1868 or croak "Failed to parse date: $date\n";
1869 $ret = { revision => $rev,
1870 date => "$tz $Y-$m-$d $H:$M:$S",
1871 author => $author,
1872 lines => $lines,
1873 msg => '' };
1874 if (defined $_authors && ! defined $users{$author}) {
1875 die "Author: $author not defined in ",
1876 "$_authors file\n";
1877 }
1878 $log->{state} = 'msg_start';
1879 next;
1880 }
1881 # skip the first blank line of the message:
1882 if ($log->{state} eq 'msg_start' && /^$/) {
1883 $log->{state} = 'msg';
1884 } elsif ($log->{state} eq 'msg') {
1885 if ($ret->{lines}) {
1886 $ret->{msg} .= $_."\n";
1887 unless (--$ret->{lines}) {
1888 $log->{state} = 'sep';
1889 }
1890 } else {
1891 croak "Log parse error at: $_\n",
1892 $ret->{revision},"\n";
1893 }
1894 }
1895 }
1896 return $ret;
1897 }
1899 sub svn_info {
1900 my $url = shift || $SVN_URL;
1902 my $pid = open my $info_fh, '-|';
1903 defined $pid or croak $!;
1905 if ($pid == 0) {
1906 exec(qw(svn info),$url) or croak $!;
1907 }
1909 my $ret = {};
1910 # only single-lines seem to exist in svn info output
1911 while (<$info_fh>) {
1912 chomp $_;
1913 if (m#^([^:]+)\s*:\s*(\S.*)$#) {
1914 $ret->{$1} = $2;
1915 push @{$ret->{-order}}, $1;
1916 }
1917 }
1918 close $info_fh or croak $?;
1919 return $ret;
1920 }
1922 sub sys { system(@_) == 0 or croak $? }
1924 sub do_update_index {
1925 my ($z_cmd, $cmd, $no_text_base) = @_;
1927 my $z = open my $p, '-|';
1928 defined $z or croak $!;
1929 unless ($z) { exec @$z_cmd or croak $! }
1931 my $pid = open my $ui, '|-';
1932 defined $pid or croak $!;
1933 unless ($pid) {
1934 exec('git-update-index',"--$cmd",'-z','--stdin') or croak $!;
1935 }
1936 local $/ = "\0";
1937 while (my $x = <$p>) {
1938 chomp $x;
1939 if (!$no_text_base && lstat $x && ! -l _ &&
1940 svn_propget_base('svn:keywords', $x)) {
1941 my $mode = -x _ ? 0755 : 0644;
1942 my ($v,$d,$f) = File::Spec->splitpath($x);
1943 my $tb = File::Spec->catfile($d, '.svn', 'tmp',
1944 'text-base',"$f.svn-base");
1945 $tb =~ s#^/##;
1946 unless (-f $tb) {
1947 $tb = File::Spec->catfile($d, '.svn',
1948 'text-base',"$f.svn-base");
1949 $tb =~ s#^/##;
1950 }
1951 my @s = stat($x);
1952 unlink $x or croak $!;
1953 copy($tb, $x);
1954 chmod(($mode &~ umask), $x) or croak $!;
1955 utime $s[8], $s[9], $x;
1956 }
1957 print $ui $x,"\0";
1958 }
1959 close $ui or croak $?;
1960 }
1962 sub index_changes {
1963 return if $_use_lib;
1965 if (!-f "$GIT_SVN_DIR/info/exclude") {
1966 open my $fd, '>>', "$GIT_SVN_DIR/info/exclude" or croak $!;
1967 print $fd '.svn',"\n";
1968 close $fd or croak $!;
1969 }
1970 my $no_text_base = shift;
1971 do_update_index([qw/git-diff-files --name-only -z/],
1972 'remove',
1973 $no_text_base);
1974 do_update_index([qw/git-ls-files -z --others/,
1975 "--exclude-from=$GIT_SVN_DIR/info/exclude"],
1976 'add',
1977 $no_text_base);
1978 }
1980 sub s_to_file {
1981 my ($str, $file, $mode) = @_;
1982 open my $fd,'>',$file or croak $!;
1983 print $fd $str,"\n" or croak $!;
1984 close $fd or croak $!;
1985 chmod ($mode &~ umask, $file) if (defined $mode);
1986 }
1988 sub file_to_s {
1989 my $file = shift;
1990 open my $fd,'<',$file or croak "$!: file: $file\n";
1991 local $/;
1992 my $ret = <$fd>;
1993 close $fd or croak $!;
1994 $ret =~ s/\s*$//s;
1995 return $ret;
1996 }
1998 sub assert_revision_unknown {
1999 my $r = shift;
2000 if (my $c = revdb_get($REVDB, $r)) {
2001 croak "$r = $c already exists! Why are we refetching it?";
2002 }
2003 }
2005 sub trees_eq {
2006 my ($x, $y) = @_;
2007 my @x = safe_qx('git-cat-file','commit',$x);
2008 my @y = safe_qx('git-cat-file','commit',$y);
2009 if (($y[0] ne $x[0]) || $x[0] !~ /^tree $sha1\n$/
2010 || $y[0] !~ /^tree $sha1\n$/) {
2011 print STDERR "Trees not equal: $y[0] != $x[0]\n";
2012 return 0
2013 }
2014 return 1;
2015 }
2017 sub git_commit {
2018 my ($log_msg, @parents) = @_;
2019 assert_revision_unknown($log_msg->{revision});
2020 map_tree_joins() if (@_branch_from && !%tree_map);
2022 my (@tmp_parents, @exec_parents, %seen_parent);
2023 if (my $lparents = $log_msg->{parents}) {
2024 @tmp_parents = @$lparents
2025 }
2026 # commit parents can be conditionally bound to a particular
2027 # svn revision via: "svn_revno=commit_sha1", filter them out here:
2028 foreach my $p (@parents) {
2029 next unless defined $p;
2030 if ($p =~ /^(\d+)=($sha1_short)$/o) {
2031 if ($1 == $log_msg->{revision}) {
2032 push @tmp_parents, $2;
2033 }
2034 } else {
2035 push @tmp_parents, $p if $p =~ /$sha1_short/o;
2036 }
2037 }
2038 my $tree = $log_msg->{tree};
2039 if (!defined $tree) {
2040 my $index = set_index($GIT_SVN_INDEX);
2041 index_changes();
2042 chomp($tree = `git-write-tree`);
2043 croak $? if $?;
2044 restore_index($index);
2045 }
2047 # just in case we clobber the existing ref, we still want that ref
2048 # as our parent:
2049 open my $null, '>', '/dev/null' or croak $!;
2050 open my $stderr, '>&', \*STDERR or croak $!;
2051 open STDERR, '>&', $null or croak $!;
2052 if (my $cur = eval { safe_qx('git-rev-parse',
2053 "refs/remotes/$GIT_SVN^0") }) {
2054 chomp $cur;
2055 push @tmp_parents, $cur;
2056 }
2057 open STDERR, '>&', $stderr or croak $!;
2058 close $stderr or croak $!;
2059 close $null or croak $!;
2061 if (exists $tree_map{$tree}) {
2062 foreach my $p (@{$tree_map{$tree}}) {
2063 my $skip;
2064 foreach (@tmp_parents) {
2065 # see if a common parent is found
2066 my $mb = eval {
2067 safe_qx('git-merge-base', $_, $p)
2068 };
2069 next if ($@ || $?);
2070 $skip = 1;
2071 last;
2072 }
2073 next if $skip;
2074 my ($url_p, $r_p, $uuid_p) = cmt_metadata($p);
2075 next if (($SVN_UUID eq $uuid_p) &&
2076 ($log_msg->{revision} > $r_p));
2077 next if (defined $url_p && defined $SVN_URL &&
2078 ($SVN_UUID eq $uuid_p) &&
2079 ($url_p eq $SVN_URL));
2080 push @tmp_parents, $p;
2081 }
2082 }
2083 foreach (@tmp_parents) {
2084 next if $seen_parent{$_};
2085 $seen_parent{$_} = 1;
2086 push @exec_parents, $_;
2087 # MAXPARENT is defined to 16 in commit-tree.c:
2088 last if @exec_parents > 16;
2089 }
2091 set_commit_env($log_msg);
2092 my @exec = ('git-commit-tree', $tree);
2093 push @exec, '-p', $_ foreach @exec_parents;
2094 defined(my $pid = open3(my $msg_fh, my $out_fh, '>&STDERR', @exec))
2095 or croak $!;
2096 print $msg_fh $log_msg->{msg} or croak $!;
2097 unless ($_no_metadata) {
2098 print $msg_fh "\ngit-svn-id: $SVN_URL\@$log_msg->{revision}",
2099 " $SVN_UUID\n" or croak $!;
2100 }
2101 $msg_fh->flush == 0 or croak $!;
2102 close $msg_fh or croak $!;
2103 chomp(my $commit = do { local $/; <$out_fh> });
2104 close $out_fh or croak $!;
2105 waitpid $pid, 0;
2106 croak $? if $?;
2107 if ($commit !~ /^$sha1$/o) {
2108 die "Failed to commit, invalid sha1: $commit\n";
2109 }
2110 sys('git-update-ref',"refs/remotes/$GIT_SVN",$commit);
2111 revdb_set($REVDB, $log_msg->{revision}, $commit);
2113 # this output is read via pipe, do not change:
2114 print "r$log_msg->{revision} = $commit\n";
2115 check_repack();
2116 return $commit;
2117 }
2119 sub check_repack {
2120 if ($_repack && (--$_repack_nr == 0)) {
2121 $_repack_nr = $_repack;
2122 sys("git repack $_repack_flags");
2123 }
2124 }
2126 sub set_commit_env {
2127 my ($log_msg) = @_;
2128 my $author = $log_msg->{author};
2129 if (!defined $author || length $author == 0) {
2130 $author = '(no author)';
2131 }
2132 my ($name,$email) = defined $users{$author} ? @{$users{$author}}
2133 : ($author,"$author\@$SVN_UUID");
2134 $ENV{GIT_AUTHOR_NAME} = $ENV{GIT_COMMITTER_NAME} = $name;
2135 $ENV{GIT_AUTHOR_EMAIL} = $ENV{GIT_COMMITTER_EMAIL} = $email;
2136 $ENV{GIT_AUTHOR_DATE} = $ENV{GIT_COMMITTER_DATE} = $log_msg->{date};
2137 }
2139 sub apply_mod_line_blob {
2140 my $m = shift;
2141 if ($m->{mode_b} =~ /^120/) {
2142 blob_to_symlink($m->{sha1_b}, $m->{file_b});
2143 } else {
2144 blob_to_file($m->{sha1_b}, $m->{file_b});
2145 }
2146 }
2148 sub blob_to_symlink {
2149 my ($blob, $link) = @_;
2150 defined $link or croak "\$link not defined!\n";
2151 croak "Not a sha1: $blob\n" unless $blob =~ /^$sha1$/o;
2152 if (-l $link || -f _) {
2153 unlink $link or croak $!;
2154 }
2156 my $dest = `git-cat-file blob $blob`; # no newline, so no chomp
2157 symlink $dest, $link or croak $!;
2158 }
2160 sub blob_to_file {
2161 my ($blob, $file) = @_;
2162 defined $file or croak "\$file not defined!\n";
2163 croak "Not a sha1: $blob\n" unless $blob =~ /^$sha1$/o;
2164 if (-l $file || -f _) {
2165 unlink $file or croak $!;
2166 }
2168 open my $blob_fh, '>', $file or croak "$!: $file\n";
2169 my $pid = fork;
2170 defined $pid or croak $!;
2172 if ($pid == 0) {
2173 open STDOUT, '>&', $blob_fh or croak $!;
2174 exec('git-cat-file','blob',$blob) or croak $!;
2175 }
2176 waitpid $pid, 0;
2177 croak $? if $?;
2179 close $blob_fh or croak $!;
2180 }
2182 sub safe_qx {
2183 my $pid = open my $child, '-|';
2184 defined $pid or croak $!;
2185 if ($pid == 0) {
2186 exec(@_) or croak $!;
2187 }
2188 my @ret = (<$child>);
2189 close $child or croak $?;
2190 die $? if $?; # just in case close didn't error out
2191 return wantarray ? @ret : join('',@ret);
2192 }
2194 sub svn_compat_check {
2195 if ($_follow_parent) {
2196 print STDERR 'E: --follow-parent functionality is only ',
2197 "available when SVN libraries are used\n";
2198 exit 1;
2199 }
2200 my @co_help = safe_qx(qw(svn co -h));
2201 unless (grep /ignore-externals/,@co_help) {
2202 print STDERR "W: Installed svn version does not support ",
2203 "--ignore-externals\n";
2204 $_no_ignore_ext = 1;
2205 }
2206 if (grep /usage: checkout URL\[\@REV\]/,@co_help) {
2207 $_svn_co_url_revs = 1;
2208 }
2209 if (grep /\[TARGET\[\@REV\]\.\.\.\]/, `svn propget -h`) {
2210 $_svn_pg_peg_revs = 1;
2211 }
2213 # I really, really hope nobody hits this...
2214 unless (grep /stop-on-copy/, (safe_qx(qw(svn log -h)))) {
2215 print STDERR <<'';
2216 W: The installed svn version does not support the --stop-on-copy flag in
2217 the log command.
2218 Lets hope the directory you're tracking is not a branch or tag
2219 and was never moved within the repository...
2221 $_no_stop_copy = 1;
2222 }
2223 }
2225 # *sigh*, new versions of svn won't honor -r<rev> without URL@<rev>,
2226 # (and they won't honor URL@<rev> without -r<rev>, too!)
2227 sub svn_cmd_checkout {
2228 my ($url, $rev, $dir) = @_;
2229 my @cmd = ('svn','co', "-r$rev");
2230 push @cmd, '--ignore-externals' unless $_no_ignore_ext;
2231 $url .= "\@$rev" if $_svn_co_url_revs;
2232 sys(@cmd, $url, $dir);
2233 }
2235 sub check_upgrade_needed {
2236 if (!-r $REVDB) {
2237 -d $GIT_SVN_DIR or mkpath([$GIT_SVN_DIR]);
2238 open my $fh, '>>',$REVDB or croak $!;
2239 close $fh;
2240 }
2241 my $old = eval {
2242 my $pid = open my $child, '-|';
2243 defined $pid or croak $!;
2244 if ($pid == 0) {
2245 close STDERR;
2246 exec('git-rev-parse',"$GIT_SVN-HEAD") or croak $!;
2247 }
2248 my @ret = (<$child>);
2249 close $child or croak $?;
2250 die $? if $?; # just in case close didn't error out
2251 return wantarray ? @ret : join('',@ret);
2252 };
2253 return unless $old;
2254 my $head = eval { safe_qx('git-rev-parse',"refs/remotes/$GIT_SVN") };
2255 if ($@ || !$head) {
2256 print STDERR "Please run: $0 rebuild --upgrade\n";
2257 exit 1;
2258 }
2259 }
2261 # fills %tree_map with a reverse mapping of trees to commits. Useful
2262 # for finding parents to commit on.
2263 sub map_tree_joins {
2264 my %seen;
2265 foreach my $br (@_branch_from) {
2266 my $pid = open my $pipe, '-|';
2267 defined $pid or croak $!;
2268 if ($pid == 0) {
2269 exec(qw(git-rev-list --topo-order --pretty=raw), $br)
2270 or croak $!;
2271 }
2272 while (<$pipe>) {
2273 if (/^commit ($sha1)$/o) {
2274 my $commit = $1;
2276 # if we've seen a commit,
2277 # we've seen its parents
2278 last if $seen{$commit};
2279 my ($tree) = (<$pipe> =~ /^tree ($sha1)$/o);
2280 unless (defined $tree) {
2281 die "Failed to parse commit $commit\n";
2282 }
2283 push @{$tree_map{$tree}}, $commit;
2284 $seen{$commit} = 1;
2285 }
2286 }
2287 close $pipe; # we could be breaking the pipe early
2288 }
2289 }
2291 sub load_all_refs {
2292 if (@_branch_from) {
2293 print STDERR '--branch|-b parameters are ignored when ',
2294 "--branch-all-refs|-B is passed\n";
2295 }
2297 # don't worry about rev-list on non-commit objects/tags,
2298 # it shouldn't blow up if a ref is a blob or tree...
2299 chomp(@_branch_from = `git-rev-parse --symbolic --all`);
2300 }
2302 # '<svn username> = real-name <email address>' mapping based on git-svnimport:
2303 sub load_authors {
2304 open my $authors, '<', $_authors or die "Can't open $_authors $!\n";
2305 while (<$authors>) {
2306 chomp;
2307 next unless /^(\S+?|\(no author\))\s*=\s*(.+?)\s*<(.+)>\s*$/;
2308 my ($user, $name, $email) = ($1, $2, $3);
2309 $users{$user} = [$name, $email];
2310 }
2311 close $authors or croak $!;
2312 }
2314 sub rload_authors {
2315 open my $authors, '<', $_authors or die "Can't open $_authors $!\n";
2316 while (<$authors>) {
2317 chomp;
2318 next unless /^(\S+?)\s*=\s*(.+?)\s*<(.+)>\s*$/;
2319 my ($user, $name, $email) = ($1, $2, $3);
2320 $rusers{"$name <$email>"} = $user;
2321 }
2322 close $authors or croak $!;
2323 }
2325 sub svn_propget_base {
2326 my ($p, $f) = @_;
2327 $f .= '@BASE' if $_svn_pg_peg_revs;
2328 return safe_qx(qw/svn propget/, $p, $f);
2329 }
2331 sub git_svn_each {
2332 my $sub = shift;
2333 foreach (`git-rev-parse --symbolic --all`) {
2334 next unless s#^refs/remotes/##;
2335 chomp $_;
2336 next unless -f "$GIT_DIR/svn/$_/info/url";
2337 &$sub($_);
2338 }
2339 }
2341 sub migrate_revdb {
2342 git_svn_each(sub {
2343 my $id = shift;
2344 defined(my $pid = fork) or croak $!;
2345 if (!$pid) {
2346 $GIT_SVN = $ENV{GIT_SVN_ID} = $id;
2347 init_vars();
2348 exit 0 if -r $REVDB;
2349 print "Upgrading svn => git mapping...\n";
2350 -d $GIT_SVN_DIR or mkpath([$GIT_SVN_DIR]);
2351 open my $fh, '>>',$REVDB or croak $!;
2352 close $fh;
2353 rebuild();
2354 print "Done upgrading. You may now delete the ",
2355 "deprecated $GIT_SVN_DIR/revs directory\n";
2356 exit 0;
2357 }
2358 waitpid $pid, 0;
2359 croak $? if $?;
2360 });
2361 }
2363 sub migration_check {
2364 migrate_revdb() unless (-e $REVDB);
2365 return if (-d "$GIT_DIR/svn" || !-d $GIT_DIR);
2366 print "Upgrading repository...\n";
2367 unless (-d "$GIT_DIR/svn") {
2368 mkdir "$GIT_DIR/svn" or croak $!;
2369 }
2370 print "Data from a previous version of git-svn exists, but\n\t",
2371 "$GIT_SVN_DIR\n\t(required for this version ",
2372 "($VERSION) of git-svn) does not.\n";
2374 foreach my $x (`git-rev-parse --symbolic --all`) {
2375 next unless $x =~ s#^refs/remotes/##;
2376 chomp $x;
2377 next unless -f "$GIT_DIR/$x/info/url";
2378 my $u = eval { file_to_s("$GIT_DIR/$x/info/url") };
2379 next unless $u;
2380 my $dn = dirname("$GIT_DIR/svn/$x");
2381 mkpath([$dn]) unless -d $dn;
2382 rename "$GIT_DIR/$x", "$GIT_DIR/svn/$x" or croak "$!: $x";
2383 }
2384 migrate_revdb() if (-d $GIT_SVN_DIR && !-w $REVDB);
2385 print "Done upgrading.\n";
2386 }
2388 sub find_rev_before {
2389 my ($r, $id, $eq_ok) = @_;
2390 my $f = "$GIT_DIR/svn/$id/.rev_db";
2391 return (undef,undef) unless -r $f;
2392 --$r unless $eq_ok;
2393 while ($r > 0) {
2394 if (my $c = revdb_get($f, $r)) {
2395 return ($r, $c);
2396 }
2397 --$r;
2398 }
2399 return (undef, undef);
2400 }
2402 sub init_vars {
2403 $GIT_SVN ||= $ENV{GIT_SVN_ID} || 'git-svn';
2404 $GIT_SVN_DIR = "$GIT_DIR/svn/$GIT_SVN";
2405 $REVDB = "$GIT_SVN_DIR/.rev_db";
2406 $GIT_SVN_INDEX = "$GIT_SVN_DIR/index";
2407 $SVN_URL = undef;
2408 $SVN_WC = "$GIT_SVN_DIR/tree";
2409 %tree_map = ();
2410 }
2412 # convert GetOpt::Long specs for use by git-repo-config
2413 sub read_repo_config {
2414 return unless -d $GIT_DIR;
2415 my $opts = shift;
2416 foreach my $o (keys %$opts) {
2417 my $v = $opts->{$o};
2418 my ($key) = ($o =~ /^([a-z\-]+)/);
2419 $key =~ s/-//g;
2420 my $arg = 'git-repo-config';
2421 $arg .= ' --int' if ($o =~ /[:=]i$/);
2422 $arg .= ' --bool' if ($o !~ /[:=][sfi]$/);
2423 if (ref $v eq 'ARRAY') {
2424 chomp(my @tmp = `$arg --get-all svn.$key`);
2425 @$v = @tmp if @tmp;
2426 } else {
2427 chomp(my $tmp = `$arg --get svn.$key`);
2428 if ($tmp && !($arg =~ / --bool / && $tmp eq 'false')) {
2429 $$v = $tmp;
2430 }
2431 }
2432 }
2433 }
2435 sub set_default_vals {
2436 if (defined $_repack) {
2437 $_repack = 1000 if ($_repack <= 0);
2438 $_repack_nr = $_repack;
2439 $_repack_flags ||= '-d';
2440 }
2441 }
2443 sub read_grafts {
2444 my $gr_file = shift;
2445 my ($grafts, $comments) = ({}, {});
2446 if (open my $fh, '<', $gr_file) {
2447 my @tmp;
2448 while (<$fh>) {
2449 if (/^($sha1)\s+/) {
2450 my $c = $1;
2451 if (@tmp) {
2452 @{$comments->{$c}} = @tmp;
2453 @tmp = ();
2454 }
2455 foreach my $p (split /\s+/, $_) {
2456 $grafts->{$c}->{$p} = 1;
2457 }
2458 } else {
2459 push @tmp, $_;
2460 }
2461 }
2462 close $fh or croak $!;
2463 @{$comments->{'END'}} = @tmp if @tmp;
2464 }
2465 return ($grafts, $comments);
2466 }
2468 sub write_grafts {
2469 my ($grafts, $comments, $gr_file) = @_;
2471 open my $fh, '>', $gr_file or croak $!;
2472 foreach my $c (sort keys %$grafts) {
2473 if ($comments->{$c}) {
2474 print $fh $_ foreach @{$comments->{$c}};
2475 }
2476 my $p = $grafts->{$c};
2477 my %x; # real parents
2478 delete $p->{$c}; # commits are not self-reproducing...
2479 my $pid = open my $ch, '-|';
2480 defined $pid or croak $!;
2481 if (!$pid) {
2482 exec(qw/git-cat-file commit/, $c) or croak $!;
2483 }
2484 while (<$ch>) {
2485 if (/^parent ($sha1)/) {
2486 $x{$1} = $p->{$1} = 1;
2487 } else {
2488 last unless /^\S/;
2489 }
2490 }
2491 close $ch; # breaking the pipe
2493 # if real parents are the only ones in the grafts, drop it
2494 next if join(' ',sort keys %$p) eq join(' ',sort keys %x);
2496 my (@ip, @jp, $mb);
2497 my %del = %x;
2498 @ip = @jp = keys %$p;
2499 foreach my $i (@ip) {
2500 next if $del{$i} || $p->{$i} == 2;
2501 foreach my $j (@jp) {
2502 next if $i eq $j || $del{$j} || $p->{$j} == 2;
2503 $mb = eval { safe_qx('git-merge-base',$i,$j) };
2504 next unless $mb;
2505 chomp $mb;
2506 next if $x{$mb};
2507 if ($mb eq $j) {
2508 delete $p->{$i};
2509 $del{$i} = 1;
2510 } elsif ($mb eq $i) {
2511 delete $p->{$j};
2512 $del{$j} = 1;
2513 }
2514 }
2515 }
2517 # if real parents are the only ones in the grafts, drop it
2518 next if join(' ',sort keys %$p) eq join(' ',sort keys %x);
2520 print $fh $c, ' ', join(' ', sort keys %$p),"\n";
2521 }
2522 if ($comments->{'END'}) {
2523 print $fh $_ foreach @{$comments->{'END'}};
2524 }
2525 close $fh or croak $!;
2526 }
2528 sub read_url_paths_all {
2529 my ($l_map, $pfx, $p) = @_;
2530 my @dir;
2531 foreach (<$p/*>) {
2532 if (-r "$_/info/url") {
2533 $pfx .= '/' if $pfx && $pfx !~ m!/$!;
2534 my $id = $pfx . basename $_;
2535 my $url = file_to_s("$_/info/url");
2536 my ($u, $p) = repo_path_split($url);
2537 $l_map->{$u}->{$p} = $id;
2538 } elsif (-d $_) {
2539 push @dir, $_;
2540 }
2541 }
2542 foreach (@dir) {
2543 my $x = $_;
2544 $x =~ s!^\Q$GIT_DIR\E/svn/!!o;
2545 read_url_paths_all($l_map, $x, $_);
2546 }
2547 }
2549 # this one only gets ids that have been imported, not new ones
2550 sub read_url_paths {
2551 my $l_map = {};
2552 git_svn_each(sub { my $x = shift;
2553 my $url = file_to_s("$GIT_DIR/svn/$x/info/url");
2554 my ($u, $p) = repo_path_split($url);
2555 $l_map->{$u}->{$p} = $x;
2556 });
2557 return $l_map;
2558 }
2560 sub extract_metadata {
2561 my $id = shift or return (undef, undef, undef);
2562 my ($url, $rev, $uuid) = ($id =~ /^git-svn-id:\s(\S+?)\@(\d+)
2563 \s([a-f\d\-]+)$/x);
2564 if (!defined $rev || !$uuid || !$url) {
2565 # some of the original repositories I made had
2566 # identifiers like this:
2567 ($rev, $uuid) = ($id =~/^git-svn-id:\s(\d+)\@([a-f\d\-]+)/);
2568 }
2569 return ($url, $rev, $uuid);
2570 }
2572 sub cmt_metadata {
2573 return extract_metadata((grep(/^git-svn-id: /,
2574 safe_qx(qw/git-cat-file commit/, shift)))[-1]);
2575 }
2577 sub get_commit_time {
2578 my $cmt = shift;
2579 defined(my $pid = open my $fh, '-|') or croak $!;
2580 if (!$pid) {
2581 exec qw/git-rev-list --pretty=raw -n1/, $cmt or croak $!;
2582 }
2583 while (<$fh>) {
2584 /^committer\s(?:.+) (\d+) ([\-\+]?\d+)$/ or next;
2585 my ($s, $tz) = ($1, $2);
2586 if ($tz =~ s/^\+//) {
2587 $s += tz_to_s_offset($tz);
2588 } elsif ($tz =~ s/^\-//) {
2589 $s -= tz_to_s_offset($tz);
2590 }
2591 close $fh;
2592 return $s;
2593 }
2594 die "Can't get commit time for commit: $cmt\n";
2595 }
2597 sub tz_to_s_offset {
2598 my ($tz) = @_;
2599 $tz =~ s/(\d\d)$//;
2600 return ($1 * 60) + ($tz * 3600);
2601 }
2603 # adapted from pager.c
2604 sub config_pager {
2605 $_pager ||= $ENV{GIT_PAGER} || $ENV{PAGER};
2606 if (!defined $_pager) {
2607 $_pager = 'less';
2608 } elsif (length $_pager == 0 || $_pager eq 'cat') {
2609 $_pager = undef;
2610 }
2611 }
2613 sub run_pager {
2614 return unless -t *STDOUT;
2615 pipe my $rfd, my $wfd or return;
2616 defined(my $pid = fork) or croak $!;
2617 if (!$pid) {
2618 open STDOUT, '>&', $wfd or croak $!;
2619 return;
2620 }
2621 open STDIN, '<&', $rfd or croak $!;
2622 $ENV{LESS} ||= 'FRSX';
2623 exec $_pager or croak "Can't run pager: $! ($_pager)\n";
2624 }
2626 sub get_author_info {
2627 my ($dest, $author, $t, $tz) = @_;
2628 $author =~ s/(?:^\s*|\s*$)//g;
2629 $dest->{a_raw} = $author;
2630 my $_a;
2631 if ($_authors) {
2632 $_a = $rusers{$author} || undef;
2633 }
2634 if (!$_a) {
2635 ($_a) = ($author =~ /<([^>]+)\@[^>]+>$/);
2636 }
2637 $dest->{t} = $t;
2638 $dest->{tz} = $tz;
2639 $dest->{a} = $_a;
2640 # Date::Parse isn't in the standard Perl distro :(
2641 if ($tz =~ s/^\+//) {
2642 $t += tz_to_s_offset($tz);
2643 } elsif ($tz =~ s/^\-//) {
2644 $t -= tz_to_s_offset($tz);
2645 }
2646 $dest->{t_utc} = $t;
2647 }
2649 sub process_commit {
2650 my ($c, $r_min, $r_max, $defer) = @_;
2651 if (defined $r_min && defined $r_max) {
2652 if ($r_min == $c->{r} && $r_min == $r_max) {
2653 show_commit($c);
2654 return 0;
2655 }
2656 return 1 if $r_min == $r_max;
2657 if ($r_min < $r_max) {
2658 # we need to reverse the print order
2659 return 0 if (defined $_limit && --$_limit < 0);
2660 push @$defer, $c;
2661 return 1;
2662 }
2663 if ($r_min != $r_max) {
2664 return 1 if ($r_min < $c->{r});
2665 return 1 if ($r_max > $c->{r});
2666 }
2667 }
2668 return 0 if (defined $_limit && --$_limit < 0);
2669 show_commit($c);
2670 return 1;
2671 }
2673 sub show_commit {
2674 my $c = shift;
2675 if ($_oneline) {
2676 my $x = "\n";
2677 if (my $l = $c->{l}) {
2678 while ($l->[0] =~ /^\s*$/) { shift @$l }
2679 $x = $l->[0];
2680 }
2681 $_l_fmt ||= 'A' . length($c->{r});
2682 print 'r',pack($_l_fmt, $c->{r}),' | ';
2683 print "$c->{c} | " if $_show_commit;
2684 print $x;
2685 } else {
2686 show_commit_normal($c);
2687 }
2688 }
2690 sub show_commit_changed_paths {
2691 my ($c) = @_;
2692 return unless $c->{changed};
2693 print "Changed paths:\n", @{$c->{changed}};
2694 }
2696 sub show_commit_normal {
2697 my ($c) = @_;
2698 print '-' x72, "\nr$c->{r} | ";
2699 print "$c->{c} | " if $_show_commit;
2700 print "$c->{a} | ", strftime("%Y-%m-%d %H:%M:%S %z (%a, %d %b %Y)",
2701 localtime($c->{t_utc})), ' | ';
2702 my $nr_line = 0;
2704 if (my $l = $c->{l}) {
2705 while ($l->[$#$l] eq "\n" && $#$l > 0
2706 && $l->[($#$l - 1)] eq "\n") {
2707 pop @$l;
2708 }
2709 $nr_line = scalar @$l;
2710 if (!$nr_line) {
2711 print "1 line\n\n\n";
2712 } else {
2713 if ($nr_line == 1) {
2714 $nr_line = '1 line';
2715 } else {
2716 $nr_line .= ' lines';
2717 }
2718 print $nr_line, "\n";
2719 show_commit_changed_paths($c);
2720 print "\n";
2721 print $_ foreach @$l;
2722 }
2723 } else {
2724 print "1 line\n";
2725 show_commit_changed_paths($c);
2726 print "\n";
2728 }
2729 foreach my $x (qw/raw diff/) {
2730 if ($c->{$x}) {
2731 print "\n";
2732 print $_ foreach @{$c->{$x}}
2733 }
2734 }
2735 }
2737 sub libsvn_load {
2738 return unless $_use_lib;
2739 $_use_lib = eval {
2740 require SVN::Core;
2741 if ($SVN::Core::VERSION lt '1.1.0') {
2742 die "Need SVN::Core 1.1.0 or better ",
2743 "(got $SVN::Core::VERSION) ",
2744 "Falling back to command-line svn\n";
2745 }
2746 require SVN::Ra;
2747 require SVN::Delta;
2748 push @SVN::Git::Editor::ISA, 'SVN::Delta::Editor';
2749 push @SVN::Git::Fetcher::ISA, 'SVN::Delta::Editor';
2750 *SVN::Git::Fetcher::process_rm = *process_rm;
2751 *SVN::Git::Fetcher::safe_qx = *safe_qx;
2752 my $kill_stupid_warnings = $SVN::Node::none.$SVN::Node::file.
2753 $SVN::Node::dir.$SVN::Node::unknown.
2754 $SVN::Node::none.$SVN::Node::file.
2755 $SVN::Node::dir.$SVN::Node::unknown.
2756 $SVN::Auth::SSL::CNMISMATCH.
2757 $SVN::Auth::SSL::NOTYETVALID.
2758 $SVN::Auth::SSL::EXPIRED.
2759 $SVN::Auth::SSL::UNKNOWNCA.
2760 $SVN::Auth::SSL::OTHER;
2761 1;
2762 };
2763 }
2765 sub _simple_prompt {
2766 my ($cred, $realm, $default_username, $may_save, $pool) = @_;
2767 $may_save = undef if $_no_auth_cache;
2768 $default_username = $_username if defined $_username;
2769 if (defined $default_username && length $default_username) {
2770 if (defined $realm && length $realm) {
2771 print "Authentication realm: $realm\n";
2772 }
2773 $cred->username($default_username);
2774 } else {
2775 _username_prompt($cred, $realm, $may_save, $pool);
2776 }
2777 $cred->password(_read_password("Password for '" .
2778 $cred->username . "': ", $realm));
2779 $cred->may_save($may_save);
2780 $SVN::_Core::SVN_NO_ERROR;
2781 }
2783 sub _ssl_server_trust_prompt {
2784 my ($cred, $realm, $failures, $cert_info, $may_save, $pool) = @_;
2785 $may_save = undef if $_no_auth_cache;
2786 print "Error validating server certificate for '$realm':\n";
2787 if ($failures & $SVN::Auth::SSL::UNKNOWNCA) {
2788 print " - The certificate is not issued by a trusted ",
2789 "authority. Use the\n",
2790 " fingerprint to validate the certificate manually!\n";
2791 }
2792 if ($failures & $SVN::Auth::SSL::CNMISMATCH) {
2793 print " - The certificate hostname does not match.\n";
2794 }
2795 if ($failures & $SVN::Auth::SSL::NOTYETVALID) {
2796 print " - The certificate is not yet valid.\n";
2797 }
2798 if ($failures & $SVN::Auth::SSL::EXPIRED) {
2799 print " - The certificate has expired.\n";
2800 }
2801 if ($failures & $SVN::Auth::SSL::OTHER) {
2802 print " - The certificate has an unknown error.\n";
2803 }
2804 printf( "Certificate information:\n".
2805 " - Hostname: %s\n".
2806 " - Valid: from %s until %s\n".
2807 " - Issuer: %s\n".
2808 " - Fingerprint: %s\n",
2809 map $cert_info->$_, qw(hostname valid_from valid_until
2810 issuer_dname fingerprint) );
2811 my $choice;
2812 prompt:
2813 print $may_save ?
2814 "(R)eject, accept (t)emporarily or accept (p)ermanently? " :
2815 "(R)eject or accept (t)emporarily? ";
2816 $choice = lc(substr(<STDIN> || 'R', 0, 1));
2817 if ($choice =~ /^t$/i) {
2818 $cred->may_save(undef);
2819 } elsif ($choice =~ /^r$/i) {
2820 return -1;
2821 } elsif ($may_save && $choice =~ /^p$/i) {
2822 $cred->may_save($may_save);
2823 } else {
2824 goto prompt;
2825 }
2826 $cred->accepted_failures($failures);
2827 $SVN::_Core::SVN_NO_ERROR;
2828 }
2830 sub _ssl_client_cert_prompt {
2831 my ($cred, $realm, $may_save, $pool) = @_;
2832 $may_save = undef if $_no_auth_cache;
2833 print "Client certificate filename: ";
2834 chomp(my $filename = <STDIN>);
2835 $cred->cert_file($filename);
2836 $cred->may_save($may_save);
2837 $SVN::_Core::SVN_NO_ERROR;
2838 }
2840 sub _ssl_client_cert_pw_prompt {
2841 my ($cred, $realm, $may_save, $pool) = @_;
2842 $may_save = undef if $_no_auth_cache;
2843 $cred->password(_read_password("Password: ", $realm));
2844 $cred->may_save($may_save);
2845 $SVN::_Core::SVN_NO_ERROR;
2846 }
2848 sub _username_prompt {
2849 my ($cred, $realm, $may_save, $pool) = @_;
2850 $may_save = undef if $_no_auth_cache;
2851 if (defined $realm && length $realm) {
2852 print "Authentication realm: $realm\n";
2853 }
2854 my $username;
2855 if (defined $_username) {
2856 $username = $_username;
2857 } else {
2858 print "Username: ";
2859 chomp($username = <STDIN>);
2860 }
2861 $cred->username($username);
2862 $cred->may_save($may_save);
2863 $SVN::_Core::SVN_NO_ERROR;
2864 }
2866 sub _read_password {
2867 my ($prompt, $realm) = @_;
2868 print $prompt;
2869 require Term::ReadKey;
2870 Term::ReadKey::ReadMode('noecho');
2871 my $password = '';
2872 while (defined(my $key = Term::ReadKey::ReadKey(0))) {
2873 last if $key =~ /[\012\015]/; # \n\r
2874 $password .= $key;
2875 }
2876 Term::ReadKey::ReadMode('restore');
2877 print "\n";
2878 $password;
2879 }
2881 sub libsvn_connect {
2882 my ($url) = @_;
2883 SVN::_Core::svn_config_ensure($_config_dir, undef);
2884 my ($baton, $callbacks) = SVN::Core::auth_open_helper([
2885 SVN::Client::get_simple_provider(),
2886 SVN::Client::get_ssl_server_trust_file_provider(),
2887 SVN::Client::get_simple_prompt_provider(
2888 \&_simple_prompt, 2),
2889 SVN::Client::get_ssl_client_cert_prompt_provider(
2890 \&_ssl_client_cert_prompt, 2),
2891 SVN::Client::get_ssl_client_cert_pw_prompt_provider(
2892 \&_ssl_client_cert_pw_prompt, 2),
2893 SVN::Client::get_username_provider(),
2894 SVN::Client::get_ssl_server_trust_prompt_provider(
2895 \&_ssl_server_trust_prompt),
2896 SVN::Client::get_username_prompt_provider(
2897 \&_username_prompt, 2),
2898 ]);
2899 my $config = SVN::Core::config_get_config($_config_dir);
2900 my $ra = SVN::Ra->new(url => $url, auth => $baton,
2901 config => $config,
2902 pool => SVN::Pool->new,
2903 auth_provider_callbacks => $callbacks);
2905 my $df = $ENV{GIT_SVN_DELTA_FETCH};
2906 if (defined $df) {
2907 $_xfer_delta = $df;
2908 } else {
2909 $_xfer_delta = ($url =~ m#^file://#) ? undef : 1;
2910 }
2911 $ra->{svn_path} = $url;
2912 $ra->{repos_root} = $ra->get_repos_root;
2913 $ra->{svn_path} =~ s#^\Q$ra->{repos_root}\E/*##;
2914 push @repo_path_split_cache, qr/^(\Q$ra->{repos_root}\E)/;
2915 return $ra;
2916 }
2918 sub libsvn_can_do_switch {
2919 unless (defined $_svn_can_do_switch) {
2920 my $pool = SVN::Pool->new;
2921 my $rep = eval {
2922 $SVN->do_switch(1, '', 0, $SVN->{url},
2923 SVN::Delta::Editor->new, $pool);
2924 };
2925 if ($@) {
2926 $_svn_can_do_switch = 0;
2927 } else {
2928 $rep->abort_report($pool);
2929 $_svn_can_do_switch = 1;
2930 }
2931 $pool->clear;
2932 }
2933 $_svn_can_do_switch;
2934 }
2936 sub libsvn_dup_ra {
2937 my ($ra) = @_;
2938 SVN::Ra->new(map { $_ => $ra->{$_} } qw/config url
2939 auth auth_provider_callbacks repos_root svn_path/);
2940 }
2942 sub libsvn_get_file {
2943 my ($gui, $f, $rev, $chg, $untracked) = @_;
2944 $f =~ s#^/##;
2945 print "\t$chg\t$f\n" unless $_q;
2947 my ($hash, $pid, $in, $out);
2948 my $pool = SVN::Pool->new;
2949 defined($pid = open3($in, $out, '>&STDERR',
2950 qw/git-hash-object -w --stdin/)) or croak $!;
2951 # redirect STDOUT for SVN 1.1.x compatibility
2952 open my $stdout, '>&', \*STDOUT or croak $!;
2953 open STDOUT, '>&', $in or croak $!;
2954 my ($r, $props) = $SVN->get_file($f, $rev, \*STDOUT, $pool);
2955 $in->flush == 0 or croak $!;
2956 open STDOUT, '>&', $stdout or croak $!;
2957 close $in or croak $!;
2958 close $stdout or croak $!;
2959 $pool->clear;
2960 chomp($hash = do { local $/; <$out> });
2961 close $out or croak $!;
2962 waitpid $pid, 0;
2963 $hash =~ /^$sha1$/o or die "not a sha1: $hash\n";
2965 my $mode = exists $props->{'svn:executable'} ? '100755' : '100644';
2966 if (exists $props->{'svn:special'}) {
2967 $mode = '120000';
2968 my $link = `git-cat-file blob $hash`;
2969 $link =~ s/^link // or die "svn:special file with contents: <",
2970 $link, "> is not understood\n";
2971 defined($pid = open3($in, $out, '>&STDERR',
2972 qw/git-hash-object -w --stdin/)) or croak $!;
2973 print $in $link;
2974 $in->flush == 0 or croak $!;
2975 close $in or croak $!;
2976 chomp($hash = do { local $/; <$out> });
2977 close $out or croak $!;
2978 waitpid $pid, 0;
2979 $hash =~ /^$sha1$/o or die "not a sha1: $hash\n";
2980 }
2981 %{$untracked->{file_prop}->{$f}} = %$props;
2982 print $gui $mode,' ',$hash,"\t",$f,"\0" or croak $!;
2983 }
2985 sub uri_encode {
2986 my ($f) = @_;
2987 $f =~ s#([^a-zA-Z0-9\*!\:_\./\-])#uc sprintf("%%%02x",ord($1))#eg;
2988 $f
2989 }
2991 sub uri_decode {
2992 my ($f) = @_;
2993 $f =~ tr/+/ /;
2994 $f =~ s/%([A-F0-9]{2})/chr hex($1)/ge;
2995 $f
2996 }
2998 sub libsvn_log_entry {
2999 my ($rev, $author, $date, $msg, $parents, $untracked) = @_;
3000 my ($Y,$m,$d,$H,$M,$S) = ($date =~ /^(\d{4})\-(\d\d)\-(\d\d)T
3001 (\d\d)\:(\d\d)\:(\d\d).\d+Z$/x)
3002 or die "Unable to parse date: $date\n";
3003 if (defined $author && length $author > 0 &&
3004 defined $_authors && ! defined $users{$author}) {
3005 die "Author: $author not defined in $_authors file\n";
3006 }
3007 $msg = '' if ($rev == 0 && !defined $msg);
3009 open my $un, '>>', "$GIT_SVN_DIR/unhandled.log" or croak $!;
3010 my $h;
3011 print $un "r$rev\n" or croak $!;
3012 $h = $untracked->{empty};
3013 foreach (sort keys %$h) {
3014 my $act = $h->{$_} ? '+empty_dir' : '-empty_dir';
3015 print $un " $act: ", uri_encode($_), "\n" or croak $!;
3016 warn "W: $act: $_\n";
3017 }
3018 foreach my $t (qw/dir_prop file_prop/) {
3019 $h = $untracked->{$t} or next;
3020 foreach my $path (sort keys %$h) {
3021 my $ppath = $path eq '' ? '.' : $path;
3022 foreach my $prop (sort keys %{$h->{$path}}) {
3023 next if $SKIP{$prop};
3024 my $v = $h->{$path}->{$prop};
3025 if (defined $v) {
3026 print $un " +$t: ",
3027 uri_encode($ppath), ' ',
3028 uri_encode($prop), ' ',
3029 uri_encode($v), "\n"
3030 or croak $!;
3031 } else {
3032 print $un " -$t: ",
3033 uri_encode($ppath), ' ',
3034 uri_encode($prop), "\n"
3035 or croak $!;
3036 }
3037 }
3038 }
3039 }
3040 foreach my $t (qw/absent_file absent_directory/) {
3041 $h = $untracked->{$t} or next;
3042 foreach my $parent (sort keys %$h) {
3043 foreach my $path (sort @{$h->{$parent}}) {
3044 print $un " $t: ",
3045 uri_encode("$parent/$path"), "\n"
3046 or croak $!;
3047 warn "W: $t: $parent/$path ",
3048 "Insufficient permissions?\n";
3049 }
3050 }
3051 }
3053 # revprops (make this optional? it's an extra network trip...)
3054 my $pool = SVN::Pool->new;
3055 my $rp = $SVN->rev_proplist($rev, $pool);
3056 foreach (sort keys %$rp) {
3057 next if /^svn:(?:author|date|log)$/;
3058 print $un " rev_prop: ", uri_encode($_), ' ',
3059 uri_encode($rp->{$_}), "\n";
3060 }
3061 $pool->clear;
3062 close $un or croak $!;
3064 { revision => $rev, date => "+0000 $Y-$m-$d $H:$M:$S",
3065 author => $author, msg => $msg."\n", parents => $parents || [],
3066 revprops => $rp }
3067 }
3069 sub process_rm {
3070 my ($gui, $last_commit, $f, $q) = @_;
3071 # remove entire directories.
3072 if (safe_qx('git-ls-tree',$last_commit,'--',$f) =~ /^040000 tree/) {
3073 defined(my $pid = open my $ls, '-|') or croak $!;
3074 if (!$pid) {
3075 exec(qw/git-ls-tree -r --name-only -z/,
3076 $last_commit,'--',$f) or croak $!;
3077 }
3078 local $/ = "\0";
3079 while (<$ls>) {
3080 print $gui '0 ',0 x 40,"\t",$_ or croak $!;
3081 print "\tD\t$_\n" unless $q;
3082 }
3083 print "\tD\t$f/\n" unless $q;
3084 close $ls or croak $?;
3085 return $SVN::Node::dir;
3086 } else {
3087 print $gui '0 ',0 x 40,"\t",$f,"\0" or croak $!;
3088 print "\tD\t$f\n" unless $q;
3089 return $SVN::Node::file;
3090 }
3091 }
3093 sub libsvn_fetch {
3094 $_xfer_delta ? libsvn_fetch_delta(@_) : libsvn_fetch_full(@_);
3095 }
3097 sub libsvn_fetch_delta {
3098 my ($last_commit, $paths, $rev, $author, $date, $msg) = @_;
3099 my $pool = SVN::Pool->new;
3100 my $ed = SVN::Git::Fetcher->new({ c => $last_commit, q => $_q });
3101 my $reporter = $SVN->do_update($rev, '', 1, $ed, $pool);
3102 my @lock = $SVN::Core::VERSION ge '1.2.0' ? (undef) : ();
3103 my (undef, $last_rev, undef) = cmt_metadata($last_commit);
3104 $reporter->set_path('', $last_rev, 0, @lock, $pool);
3105 $reporter->finish_report($pool);
3106 $pool->clear;
3107 unless ($ed->{git_commit_ok}) {
3108 die "SVN connection failed somewhere...\n";
3109 }
3110 libsvn_log_entry($rev, $author, $date, $msg, [$last_commit], $ed);
3111 }
3113 sub libsvn_fetch_full {
3114 my ($last_commit, $paths, $rev, $author, $date, $msg) = @_;
3115 open my $gui, '| git-update-index -z --index-info' or croak $!;
3116 my %amr;
3117 my $ut = { empty => {}, dir_prop => {}, file_prop => {} };
3118 my $p = $SVN->{svn_path};
3119 foreach my $f (keys %$paths) {
3120 my $m = $paths->{$f}->action();
3121 if (length $p) {
3122 $f =~ s#^/\Q$p\E/##;
3123 next if $f =~ m#^/#;
3124 } else {
3125 $f =~ s#^/##;
3126 }
3127 if ($m =~ /^[DR]$/) {
3128 my $t = process_rm($gui, $last_commit, $f, $_q);
3129 if ($m eq 'D') {
3130 $ut->{empty}->{$f} = 0 if $t == $SVN::Node::dir;
3131 next;
3132 }
3133 # 'R' can be file replacements, too, right?
3134 }
3135 my $pool = SVN::Pool->new;
3136 my $t = $SVN->check_path($f, $rev, $pool);
3137 if ($t == $SVN::Node::file) {
3138 if ($m =~ /^[AMR]$/) {
3139 $amr{$f} = $m;
3140 } else {
3141 die "Unrecognized action: $m, ($f r$rev)\n";
3142 }
3143 } elsif ($t == $SVN::Node::dir && $m =~ /^[AR]$/) {
3144 my @traversed = ();
3145 libsvn_traverse($gui, '', $f, $rev, \@traversed, $ut);
3146 if (@traversed) {
3147 foreach (@traversed) {
3148 $amr{$_} = $m;
3149 }
3150 } else {
3151 my ($dir, $file) = ($f =~ m#^(.*?)/?([^/]+)$#);
3152 delete $ut->{empty}->{$dir};
3153 $ut->{empty}->{$f} = 1;
3154 }
3155 }
3156 $pool->clear;
3157 }
3158 foreach (keys %amr) {
3159 libsvn_get_file($gui, $_, $rev, $amr{$_}, $ut);
3160 my ($d) = ($_ =~ m#^(.*?)/?(?:[^/]+)$#);
3161 delete $ut->{empty}->{$d};
3162 }
3163 unless (exists $ut->{dir_prop}->{''}) {
3164 my $pool = SVN::Pool->new;
3165 my (undef, undef, $props) = $SVN->get_dir('', $rev, $pool);
3166 %{$ut->{dir_prop}->{''}} = %$props;
3167 $pool->clear;
3168 }
3169 close $gui or croak $?;
3170 libsvn_log_entry($rev, $author, $date, $msg, [$last_commit], $ut);
3171 }
3173 sub svn_grab_base_rev {
3174 defined(my $pid = open my $fh, '-|') or croak $!;
3175 if (!$pid) {
3176 open my $null, '>', '/dev/null' or croak $!;
3177 open STDERR, '>&', $null or croak $!;
3178 exec qw/git-rev-parse --verify/,"refs/remotes/$GIT_SVN^0"
3179 or croak $!;
3180 }
3181 chomp(my $c = do { local $/; <$fh> });
3182 close $fh;
3183 if (defined $c && length $c) {
3184 my ($url, $rev, $uuid) = cmt_metadata($c);
3185 return ($rev, $c) if defined $rev;
3186 }
3187 if ($_no_metadata) {
3188 my $offset = -41; # from tail
3189 my $rl;
3190 open my $fh, '<', $REVDB or
3191 die "--no-metadata specified and $REVDB not readable\n";
3192 seek $fh, $offset, 2;
3193 $rl = readline $fh;
3194 defined $rl or return (undef, undef);
3195 chomp $rl;
3196 while ($c ne $rl && tell $fh != 0) {
3197 $offset -= 41;
3198 seek $fh, $offset, 2;
3199 $rl = readline $fh;
3200 defined $rl or return (undef, undef);
3201 chomp $rl;
3202 }
3203 my $rev = tell $fh;
3204 croak $! if ($rev < -1);
3205 $rev = ($rev - 41) / 41;
3206 close $fh or croak $!;
3207 return ($rev, $c);
3208 }
3209 return (undef, undef);
3210 }
3212 sub libsvn_parse_revision {
3213 my $base = shift;
3214 my $head = $SVN->get_latest_revnum();
3215 if (!defined $_revision || $_revision eq 'BASE:HEAD') {
3216 return ($base + 1, $head) if (defined $base);
3217 return (0, $head);
3218 }
3219 return ($1, $2) if ($_revision =~ /^(\d+):(\d+)$/);
3220 return ($_revision, $_revision) if ($_revision =~ /^\d+$/);
3221 if ($_revision =~ /^BASE:(\d+)$/) {
3222 return ($base + 1, $1) if (defined $base);
3223 return (0, $head);
3224 }
3225 return ($1, $head) if ($_revision =~ /^(\d+):HEAD$/);
3226 die "revision argument: $_revision not understood by git-svn\n",
3227 "Try using the command-line svn client instead\n";
3228 }
3230 sub libsvn_traverse {
3231 my ($gui, $pfx, $path, $rev, $files, $untracked) = @_;
3232 my $cwd = length $pfx ? "$pfx/$path" : $path;
3233 my $pool = SVN::Pool->new;
3234 $cwd =~ s#^\Q$SVN->{svn_path}\E##;
3235 my $nr = 0;
3236 my ($dirent, $r, $props) = $SVN->get_dir($cwd, $rev, $pool);
3237 %{$untracked->{dir_prop}->{$cwd}} = %$props;
3238 foreach my $d (keys %$dirent) {
3239 my $t = $dirent->{$d}->kind;
3240 if ($t == $SVN::Node::dir) {
3241 my $i = libsvn_traverse($gui, $cwd, $d, $rev,
3242 $files, $untracked);
3243 if ($i) {
3244 $nr += $i;
3245 } else {
3246 $untracked->{empty}->{"$cwd/$d"} = 1;
3247 }
3248 } elsif ($t == $SVN::Node::file) {
3249 $nr++;
3250 my $file = "$cwd/$d";
3251 if (defined $files) {
3252 push @$files, $file;
3253 } else {
3254 libsvn_get_file($gui, $file, $rev, 'A',
3255 $untracked);
3256 my ($dir) = ($file =~ m#^(.*?)/?(?:[^/]+)$#);
3257 delete $untracked->{empty}->{$dir};
3258 }
3259 }
3260 }
3261 $pool->clear;
3262 $nr;
3263 }
3265 sub libsvn_traverse_ignore {
3266 my ($fh, $path, $r) = @_;
3267 $path =~ s#^/+##g;
3268 my $pool = SVN::Pool->new;
3269 my ($dirent, undef, $props) = $SVN->get_dir($path, $r, $pool);
3270 my $p = $path;
3271 $p =~ s#^\Q$SVN->{svn_path}\E/##;
3272 print $fh length $p ? "\n# $p\n" : "\n# /\n";
3273 if (my $s = $props->{'svn:ignore'}) {
3274 $s =~ s/[\r\n]+/\n/g;
3275 chomp $s;
3276 if (length $p == 0) {
3277 $s =~ s#\n#\n/$p#g;
3278 print $fh "/$s\n";
3279 } else {
3280 $s =~ s#\n#\n/$p/#g;
3281 print $fh "/$p/$s\n";
3282 }
3283 }
3284 foreach (sort keys %$dirent) {
3285 next if $dirent->{$_}->kind != $SVN::Node::dir;
3286 libsvn_traverse_ignore($fh, "$path/$_", $r);
3287 }
3288 $pool->clear;
3289 }
3291 sub revisions_eq {
3292 my ($path, $r0, $r1) = @_;
3293 return 1 if $r0 == $r1;
3294 my $nr = 0;
3295 if ($_use_lib) {
3296 # should be OK to use Pool here (r1 - r0) should be small
3297 my $pool = SVN::Pool->new;
3298 libsvn_get_log($SVN, [$path], $r0, $r1,
3299 0, 0, 1, sub {$nr++}, $pool);
3300 $pool->clear;
3301 } else {
3302 my ($url, undef) = repo_path_split($SVN_URL);
3303 my $svn_log = svn_log_raw("$url/$path","-r$r0:$r1");
3304 while (next_log_entry($svn_log)) { $nr++ }
3305 close $svn_log->{fh};
3306 }
3307 return 0 if ($nr > 1);
3308 return 1;
3309 }
3311 sub libsvn_find_parent_branch {
3312 my ($paths, $rev, $author, $date, $msg) = @_;
3313 my $svn_path = '/'.$SVN->{svn_path};
3315 # look for a parent from another branch:
3316 my $i = $paths->{$svn_path} or return;
3317 my $branch_from = $i->copyfrom_path or return;
3318 my $r = $i->copyfrom_rev;
3319 print STDERR "Found possible branch point: ",
3320 "$branch_from => $svn_path, $r\n";
3321 $branch_from =~ s#^/##;
3322 my $l_map = {};
3323 read_url_paths_all($l_map, '', "$GIT_DIR/svn");
3324 my $url = $SVN->{repos_root};
3325 defined $l_map->{$url} or return;
3326 my $id = $l_map->{$url}->{$branch_from};
3327 if (!defined $id && $_follow_parent) {
3328 print STDERR "Following parent: $branch_from\@$r\n";
3329 # auto create a new branch and follow it
3330 $id = basename($branch_from);
3331 $id .= '@'.$r if -r "$GIT_DIR/svn/$id";
3332 while (-r "$GIT_DIR/svn/$id") {
3333 # just grow a tail if we're not unique enough :x
3334 $id .= '-';
3335 }
3336 }
3337 return unless defined $id;
3339 my ($r0, $parent) = find_rev_before($r,$id,1);
3340 if ($_follow_parent && (!defined $r0 || !defined $parent)) {
3341 defined(my $pid = fork) or croak $!;
3342 if (!$pid) {
3343 $GIT_SVN = $ENV{GIT_SVN_ID} = $id;
3344 init_vars();
3345 $SVN_URL = "$url/$branch_from";
3346 $SVN = undef;
3347 setup_git_svn();
3348 # we can't assume SVN_URL exists at r+1:
3349 $_revision = "0:$r";
3350 fetch_lib();
3351 exit 0;
3352 }
3353 waitpid $pid, 0;
3354 croak $? if $?;
3355 ($r0, $parent) = find_rev_before($r,$id,1);
3356 }
3357 return unless (defined $r0 && defined $parent);
3358 if (revisions_eq($branch_from, $r0, $r)) {
3359 unlink $GIT_SVN_INDEX;
3360 print STDERR "Found branch parent: ($GIT_SVN) $parent\n";
3361 sys(qw/git-read-tree/, $parent);
3362 unless (libsvn_can_do_switch()) {
3363 return libsvn_fetch_full($parent, $paths, $rev,
3364 $author, $date, $msg);
3365 }
3366 # do_switch works with svn/trunk >= r22312, but that is not
3367 # included with SVN 1.4.2 (the latest version at the moment),
3368 # so we can't rely on it.
3369 my $ra = libsvn_connect("$url/$branch_from");
3370 my $ed = SVN::Git::Fetcher->new({c => $parent, q => $_q});
3371 my $pool = SVN::Pool->new;
3372 my $reporter = $ra->do_switch($rev, '', 1, $SVN->{url},
3373 $ed, $pool);
3374 my @lock = $SVN::Core::VERSION ge '1.2.0' ? (undef) : ();
3375 $reporter->set_path('', $r0, 0, @lock, $pool);
3376 $reporter->finish_report($pool);
3377 $pool->clear;
3378 unless ($ed->{git_commit_ok}) {
3379 die "SVN connection failed somewhere...\n";
3380 }
3381 return libsvn_log_entry($rev, $author, $date, $msg, [$parent]);
3382 }
3383 print STDERR "Nope, branch point not imported or unknown\n";
3384 return undef;
3385 }
3387 sub libsvn_get_log {
3388 my ($ra, @args) = @_;
3389 $args[4]-- if $args[4] && $_xfer_delta && ! $_follow_parent;
3390 if ($SVN::Core::VERSION le '1.2.0') {
3391 splice(@args, 3, 1);
3392 }
3393 $ra->get_log(@args);
3394 }
3396 sub libsvn_new_tree {
3397 if (my $log_entry = libsvn_find_parent_branch(@_)) {
3398 return $log_entry;
3399 }
3400 my ($paths, $rev, $author, $date, $msg) = @_;
3401 my $ut;
3402 if ($_xfer_delta) {
3403 my $pool = SVN::Pool->new;
3404 my $ed = SVN::Git::Fetcher->new({q => $_q});
3405 my $reporter = $SVN->do_update($rev, '', 1, $ed, $pool);
3406 my @lock = $SVN::Core::VERSION ge '1.2.0' ? (undef) : ();
3407 $reporter->set_path('', $rev, 1, @lock, $pool);
3408 $reporter->finish_report($pool);
3409 $pool->clear;
3410 unless ($ed->{git_commit_ok}) {
3411 die "SVN connection failed somewhere...\n";
3412 }
3413 $ut = $ed;
3414 } else {
3415 $ut = { empty => {}, dir_prop => {}, file_prop => {} };
3416 open my $gui, '| git-update-index -z --index-info' or croak $!;
3417 libsvn_traverse($gui, '', $SVN->{svn_path}, $rev, undef, $ut);
3418 close $gui or croak $?;
3419 }
3420 libsvn_log_entry($rev, $author, $date, $msg, [], $ut);
3421 }
3423 sub find_graft_path_commit {
3424 my ($tree_paths, $p1, $r1) = @_;
3425 foreach my $x (keys %$tree_paths) {
3426 next unless ($p1 =~ /^\Q$x\E/);
3427 my $i = $tree_paths->{$x};
3428 my ($r0, $parent) = find_rev_before($r1,$i,1);
3429 return $parent if (defined $r0 && $r0 == $r1);
3430 print STDERR "r$r1 of $i not imported\n";
3431 next;
3432 }
3433 return undef;
3434 }
3436 sub find_graft_path_parents {
3437 my ($grafts, $tree_paths, $c, $p0, $r0) = @_;
3438 foreach my $x (keys %$tree_paths) {
3439 next unless ($p0 =~ /^\Q$x\E/);
3440 my $i = $tree_paths->{$x};
3441 my ($r, $parent) = find_rev_before($r0, $i, 1);
3442 if (defined $r && defined $parent && revisions_eq($x,$r,$r0)) {
3443 my ($url_b, undef, $uuid_b) = cmt_metadata($c);
3444 my ($url_a, undef, $uuid_a) = cmt_metadata($parent);
3445 next if ($url_a && $url_b && $url_a eq $url_b &&
3446 $uuid_b eq $uuid_a);
3447 $grafts->{$c}->{$parent} = 1;
3448 }
3449 }
3450 }
3452 sub libsvn_graft_file_copies {
3453 my ($grafts, $tree_paths, $path, $paths, $rev) = @_;
3454 foreach (keys %$paths) {
3455 my $i = $paths->{$_};
3456 my ($m, $p0, $r0) = ($i->action, $i->copyfrom_path,
3457 $i->copyfrom_rev);
3458 next unless (defined $p0 && defined $r0);
3460 my $p1 = $_;
3461 $p1 =~ s#^/##;
3462 $p0 =~ s#^/##;
3463 my $c = find_graft_path_commit($tree_paths, $p1, $rev);
3464 next unless $c;
3465 find_graft_path_parents($grafts, $tree_paths, $c, $p0, $r0);
3466 }
3467 }
3469 sub set_index {
3470 my $old = $ENV{GIT_INDEX_FILE};
3471 $ENV{GIT_INDEX_FILE} = shift;
3472 return $old;
3473 }
3475 sub restore_index {
3476 my ($old) = @_;
3477 if (defined $old) {
3478 $ENV{GIT_INDEX_FILE} = $old;
3479 } else {
3480 delete $ENV{GIT_INDEX_FILE};
3481 }
3482 }
3484 sub libsvn_commit_cb {
3485 my ($rev, $date, $committer, $c, $msg, $r_last, $cmt_last) = @_;
3486 if ($_optimize_commits && $rev == ($r_last + 1)) {
3487 my $log = libsvn_log_entry($rev,$committer,$date,$msg);
3488 $log->{tree} = get_tree_from_treeish($c);
3489 my $cmt = git_commit($log, $cmt_last, $c);
3490 my @diff = safe_qx('git-diff-tree', $cmt, $c);
3491 if (@diff) {
3492 print STDERR "Trees differ: $cmt $c\n",
3493 join('',@diff),"\n";
3494 exit 1;
3495 }
3496 } else {
3497 fetch("$rev=$c");
3498 }
3499 }
3501 sub libsvn_ls_fullurl {
3502 my $fullurl = shift;
3503 my $ra = libsvn_connect($fullurl);
3504 my @ret;
3505 my $pool = SVN::Pool->new;
3506 my $r = defined $_revision ? $_revision : $ra->get_latest_revnum;
3507 my ($dirent, undef, undef) = $ra->get_dir('', $r, $pool);
3508 foreach my $d (keys %$dirent) {
3509 if ($dirent->{$d}->kind == $SVN::Node::dir) {
3510 push @ret, "$d/"; # add '/' for compat with cli svn
3511 }
3512 }
3513 $pool->clear;
3514 return @ret;
3515 }
3518 sub libsvn_skip_unknown_revs {
3519 my $err = shift;
3520 my $errno = $err->apr_err();
3521 # Maybe the branch we're tracking didn't
3522 # exist when the repo started, so it's
3523 # not an error if it doesn't, just continue
3524 #
3525 # Wonderfully consistent library, eh?
3526 # 160013 - svn:// and file://
3527 # 175002 - http(s)://
3528 # 175007 - http(s):// (this repo required authorization, too...)
3529 # More codes may be discovered later...
3530 if ($errno == 175007 || $errno == 175002 || $errno == 160013) {
3531 return;
3532 }
3533 croak "Error from SVN, ($errno): ", $err->expanded_message,"\n";
3534 };
3536 # Tie::File seems to be prone to offset errors if revisions get sparse,
3537 # it's not that fast, either. Tie::File is also not in Perl 5.6. So
3538 # one of my favorite modules is out :< Next up would be one of the DBM
3539 # modules, but I'm not sure which is most portable... So I'll just
3540 # go with something that's plain-text, but still capable of
3541 # being randomly accessed. So here's my ultra-simple fixed-width
3542 # database. All records are 40 characters + "\n", so it's easy to seek
3543 # to a revision: (41 * rev) is the byte offset.
3544 # A record of 40 0s denotes an empty revision.
3545 # And yes, it's still pretty fast (faster than Tie::File).
3546 sub revdb_set {
3547 my ($file, $rev, $commit) = @_;
3548 length $commit == 40 or croak "arg3 must be a full SHA1 hexsum\n";
3549 open my $fh, '+<', $file or croak $!;
3550 my $offset = $rev * 41;
3551 # assume that append is the common case:
3552 seek $fh, 0, 2 or croak $!;
3553 my $pos = tell $fh;
3554 if ($pos < $offset) {
3555 print $fh (('0' x 40),"\n") x (($offset - $pos) / 41);
3556 }
3557 seek $fh, $offset, 0 or croak $!;
3558 print $fh $commit,"\n";
3559 close $fh or croak $!;
3560 }
3562 sub revdb_get {
3563 my ($file, $rev) = @_;
3564 my $ret;
3565 my $offset = $rev * 41;
3566 open my $fh, '<', $file or croak $!;
3567 seek $fh, $offset, 0;
3568 if (tell $fh == $offset) {
3569 $ret = readline $fh;
3570 if (defined $ret) {
3571 chomp $ret;
3572 $ret = undef if ($ret =~ /^0{40}$/);
3573 }
3574 }
3575 close $fh or croak $!;
3576 return $ret;
3577 }
3579 sub copy_remote_ref {
3580 my $origin = $_cp_remote ? $_cp_remote : 'origin';
3581 my $ref = "refs/remotes/$GIT_SVN";
3582 if (safe_qx('git-ls-remote', $origin, $ref)) {
3583 sys(qw/git fetch/, $origin, "$ref:$ref");
3584 } elsif ($_cp_remote && !$_upgrade) {
3585 die "Unable to find remote reference: ",
3586 "refs/remotes/$GIT_SVN on $origin\n";
3587 }
3588 }
3589 package SVN::Git::Fetcher;
3590 use vars qw/@ISA/;
3591 use strict;
3592 use warnings;
3593 use Carp qw/croak/;
3594 use IO::File qw//;
3596 # file baton members: path, mode_a, mode_b, pool, fh, blob, base
3597 sub new {
3598 my ($class, $git_svn) = @_;
3599 my $self = SVN::Delta::Editor->new;
3600 bless $self, $class;
3601 open my $gui, '| git-update-index -z --index-info' or croak $!;
3602 $self->{gui} = $gui;
3603 $self->{c} = $git_svn->{c} if exists $git_svn->{c};
3604 $self->{q} = $git_svn->{q};
3605 $self->{empty} = {};
3606 $self->{dir_prop} = {};
3607 $self->{file_prop} = {};
3608 $self->{absent_dir} = {};
3609 $self->{absent_file} = {};
3610 require Digest::MD5;
3611 $self;
3612 }
3614 sub open_root {
3615 { path => '' };
3616 }
3618 sub open_directory {
3619 my ($self, $path, $pb, $rev) = @_;
3620 { path => $path };
3621 }
3623 sub delete_entry {
3624 my ($self, $path, $rev, $pb) = @_;
3625 my $t = process_rm($self->{gui}, $self->{c}, $path, $self->{q});
3626 $self->{empty}->{$path} = 0 if $t == $SVN::Node::dir;
3627 undef;
3628 }
3630 sub open_file {
3631 my ($self, $path, $pb, $rev) = @_;
3632 my ($mode, $blob) = (safe_qx('git-ls-tree',$self->{c},'--',$path)
3633 =~ /^(\d{6}) blob ([a-f\d]{40})\t/);
3634 unless (defined $mode && defined $blob) {
3635 die "$path was not found in commit $self->{c} (r$rev)\n";
3636 }
3637 { path => $path, mode_a => $mode, mode_b => $mode, blob => $blob,
3638 pool => SVN::Pool->new, action => 'M' };
3639 }
3641 sub add_file {
3642 my ($self, $path, $pb, $cp_path, $cp_rev) = @_;
3643 my ($dir, $file) = ($path =~ m#^(.*?)/?([^/]+)$#);
3644 delete $self->{empty}->{$dir};
3645 { path => $path, mode_a => 100644, mode_b => 100644,
3646 pool => SVN::Pool->new, action => 'A' };
3647 }
3649 sub add_directory {
3650 my ($self, $path, $cp_path, $cp_rev) = @_;
3651 my ($dir, $file) = ($path =~ m#^(.*?)/?([^/]+)$#);
3652 delete $self->{empty}->{$dir};
3653 $self->{empty}->{$path} = 1;
3654 { path => $path };
3655 }
3657 sub change_dir_prop {
3658 my ($self, $db, $prop, $value) = @_;
3659 $self->{dir_prop}->{$db->{path}} ||= {};
3660 $self->{dir_prop}->{$db->{path}}->{$prop} = $value;
3661 undef;
3662 }
3664 sub absent_directory {
3665 my ($self, $path, $pb) = @_;
3666 $self->{absent_dir}->{$pb->{path}} ||= [];
3667 push @{$self->{absent_dir}->{$pb->{path}}}, $path;
3668 undef;
3669 }
3671 sub absent_file {
3672 my ($self, $path, $pb) = @_;
3673 $self->{absent_file}->{$pb->{path}} ||= [];
3674 push @{$self->{absent_file}->{$pb->{path}}}, $path;
3675 undef;
3676 }
3678 sub change_file_prop {
3679 my ($self, $fb, $prop, $value) = @_;
3680 if ($prop eq 'svn:executable') {
3681 if ($fb->{mode_b} != 120000) {
3682 $fb->{mode_b} = defined $value ? 100755 : 100644;
3683 }
3684 } elsif ($prop eq 'svn:special') {
3685 $fb->{mode_b} = defined $value ? 120000 : 100644;
3686 } else {
3687 $self->{file_prop}->{$fb->{path}} ||= {};
3688 $self->{file_prop}->{$fb->{path}}->{$prop} = $value;
3689 }
3690 undef;
3691 }
3693 sub apply_textdelta {
3694 my ($self, $fb, $exp) = @_;
3695 my $fh = IO::File->new_tmpfile;
3696 $fh->autoflush(1);
3697 # $fh gets auto-closed() by SVN::TxDelta::apply(),
3698 # (but $base does not,) so dup() it for reading in close_file
3699 open my $dup, '<&', $fh or croak $!;
3700 my $base = IO::File->new_tmpfile;
3701 $base->autoflush(1);
3702 if ($fb->{blob}) {
3703 defined (my $pid = fork) or croak $!;
3704 if (!$pid) {
3705 open STDOUT, '>&', $base or croak $!;
3706 print STDOUT 'link ' if ($fb->{mode_a} == 120000);
3707 exec qw/git-cat-file blob/, $fb->{blob} or croak $!;
3708 }
3709 waitpid $pid, 0;
3710 croak $? if $?;
3712 if (defined $exp) {
3713 seek $base, 0, 0 or croak $!;
3714 my $md5 = Digest::MD5->new;
3715 $md5->addfile($base);
3716 my $got = $md5->hexdigest;
3717 die "Checksum mismatch: $fb->{path} $fb->{blob}\n",
3718 "expected: $exp\n",
3719 " got: $got\n" if ($got ne $exp);
3720 }
3721 }
3722 seek $base, 0, 0 or croak $!;
3723 $fb->{fh} = $dup;
3724 $fb->{base} = $base;
3725 [ SVN::TxDelta::apply($base, $fh, undef, $fb->{path}, $fb->{pool}) ];
3726 }
3728 sub close_file {
3729 my ($self, $fb, $exp) = @_;
3730 my $hash;
3731 my $path = $fb->{path};
3732 if (my $fh = $fb->{fh}) {
3733 seek($fh, 0, 0) or croak $!;
3734 my $md5 = Digest::MD5->new;
3735 $md5->addfile($fh);
3736 my $got = $md5->hexdigest;
3737 die "Checksum mismatch: $path\n",
3738 "expected: $exp\n got: $got\n" if ($got ne $exp);
3739 seek($fh, 0, 0) or croak $!;
3740 if ($fb->{mode_b} == 120000) {
3741 read($fh, my $buf, 5) == 5 or croak $!;
3742 $buf eq 'link ' or die "$path has mode 120000",
3743 "but is not a link\n";
3744 }
3745 defined(my $pid = open my $out,'-|') or die "Can't fork: $!\n";
3746 if (!$pid) {
3747 open STDIN, '<&', $fh or croak $!;
3748 exec qw/git-hash-object -w --stdin/ or croak $!;
3749 }
3750 chomp($hash = do { local $/; <$out> });
3751 close $out or croak $!;
3752 close $fh or croak $!;
3753 $hash =~ /^[a-f\d]{40}$/ or die "not a sha1: $hash\n";
3754 close $fb->{base} or croak $!;
3755 } else {
3756 $hash = $fb->{blob} or die "no blob information\n";
3757 }
3758 $fb->{pool}->clear;
3759 my $gui = $self->{gui};
3760 print $gui "$fb->{mode_b} $hash\t$path\0" or croak $!;
3761 print "\t$fb->{action}\t$path\n" if $fb->{action} && ! $self->{q};
3762 undef;
3763 }
3765 sub abort_edit {
3766 my $self = shift;
3767 close $self->{gui};
3768 $self->SUPER::abort_edit(@_);
3769 }
3771 sub close_edit {
3772 my $self = shift;
3773 close $self->{gui} or croak $!;
3774 $self->{git_commit_ok} = 1;
3775 $self->SUPER::close_edit(@_);
3776 }
3778 package SVN::Git::Editor;
3779 use vars qw/@ISA/;
3780 use strict;
3781 use warnings;
3782 use Carp qw/croak/;
3783 use IO::File;
3785 sub new {
3786 my $class = shift;
3787 my $git_svn = shift;
3788 my $self = SVN::Delta::Editor->new(@_);
3789 bless $self, $class;
3790 foreach (qw/svn_path c r ra /) {
3791 die "$_ required!\n" unless (defined $git_svn->{$_});
3792 $self->{$_} = $git_svn->{$_};
3793 }
3794 $self->{pool} = SVN::Pool->new;
3795 $self->{bat} = { '' => $self->open_root($self->{r}, $self->{pool}) };
3796 $self->{rm} = { };
3797 require Digest::MD5;
3798 return $self;
3799 }
3801 sub split_path {
3802 return ($_[0] =~ m#^(.*?)/?([^/]+)$#);
3803 }
3805 sub repo_path {
3806 (defined $_[1] && length $_[1]) ? $_[1] : ''
3807 }
3809 sub url_path {
3810 my ($self, $path) = @_;
3811 $self->{ra}->{url} . '/' . $self->repo_path($path);
3812 }
3814 sub rmdirs {
3815 my ($self, $q) = @_;
3816 my $rm = $self->{rm};
3817 delete $rm->{''}; # we never delete the url we're tracking
3818 return unless %$rm;
3820 foreach (keys %$rm) {
3821 my @d = split m#/#, $_;
3822 my $c = shift @d;
3823 $rm->{$c} = 1;
3824 while (@d) {
3825 $c .= '/' . shift @d;
3826 $rm->{$c} = 1;
3827 }
3828 }
3829 delete $rm->{$self->{svn_path}};
3830 delete $rm->{''}; # we never delete the url we're tracking
3831 return unless %$rm;
3833 defined(my $pid = open my $fh,'-|') or croak $!;
3834 if (!$pid) {
3835 exec qw/git-ls-tree --name-only -r -z/, $self->{c} or croak $!;
3836 }
3837 local $/ = "\0";
3838 while (<$fh>) {
3839 chomp;
3840 my @dn = split m#/#, $_;
3841 while (pop @dn) {
3842 delete $rm->{join '/', @dn};
3843 }
3844 unless (%$rm) {
3845 close $fh;
3846 return;
3847 }
3848 }
3849 close $fh;
3851 my ($r, $p, $bat) = ($self->{r}, $self->{pool}, $self->{bat});
3852 foreach my $d (sort { $b =~ tr#/#/# <=> $a =~ tr#/#/# } keys %$rm) {
3853 $self->close_directory($bat->{$d}, $p);
3854 my ($dn) = ($d =~ m#^(.*?)/?(?:[^/]+)$#);
3855 print "\tD+\t/$d/\n" unless $q;
3856 $self->SUPER::delete_entry($d, $r, $bat->{$dn}, $p);
3857 delete $bat->{$d};
3858 }
3859 }
3861 sub open_or_add_dir {
3862 my ($self, $full_path, $baton) = @_;
3863 my $p = SVN::Pool->new;
3864 my $t = $self->{ra}->check_path($full_path, $self->{r}, $p);
3865 $p->clear;
3866 if ($t == $SVN::Node::none) {
3867 return $self->add_directory($full_path, $baton,
3868 undef, -1, $self->{pool});
3869 } elsif ($t == $SVN::Node::dir) {
3870 return $self->open_directory($full_path, $baton,
3871 $self->{r}, $self->{pool});
3872 }
3873 print STDERR "$full_path already exists in repository at ",
3874 "r$self->{r} and it is not a directory (",
3875 ($t == $SVN::Node::file ? 'file' : 'unknown'),"/$t)\n";
3876 exit 1;
3877 }
3879 sub ensure_path {
3880 my ($self, $path) = @_;
3881 my $bat = $self->{bat};
3882 $path = $self->repo_path($path);
3883 return $bat->{''} unless (length $path);
3884 my @p = split m#/+#, $path;
3885 my $c = shift @p;
3886 $bat->{$c} ||= $self->open_or_add_dir($c, $bat->{''});
3887 while (@p) {
3888 my $c0 = $c;
3889 $c .= '/' . shift @p;
3890 $bat->{$c} ||= $self->open_or_add_dir($c, $bat->{$c0});
3891 }
3892 return $bat->{$c};
3893 }
3895 sub A {
3896 my ($self, $m, $q) = @_;
3897 my ($dir, $file) = split_path($m->{file_b});
3898 my $pbat = $self->ensure_path($dir);
3899 my $fbat = $self->add_file($self->repo_path($m->{file_b}), $pbat,
3900 undef, -1);
3901 print "\tA\t$m->{file_b}\n" unless $q;
3902 $self->chg_file($fbat, $m);
3903 $self->close_file($fbat,undef,$self->{pool});
3904 }
3906 sub C {
3907 my ($self, $m, $q) = @_;
3908 my ($dir, $file) = split_path($m->{file_b});
3909 my $pbat = $self->ensure_path($dir);
3910 my $fbat = $self->add_file($self->repo_path($m->{file_b}), $pbat,
3911 $self->url_path($m->{file_a}), $self->{r});
3912 print "\tC\t$m->{file_a} => $m->{file_b}\n" unless $q;
3913 $self->chg_file($fbat, $m);
3914 $self->close_file($fbat,undef,$self->{pool});
3915 }
3917 sub delete_entry {
3918 my ($self, $path, $pbat) = @_;
3919 my $rpath = $self->repo_path($path);
3920 my ($dir, $file) = split_path($rpath);
3921 $self->{rm}->{$dir} = 1;
3922 $self->SUPER::delete_entry($rpath, $self->{r}, $pbat, $self->{pool});
3923 }
3925 sub R {
3926 my ($self, $m, $q) = @_;
3927 my ($dir, $file) = split_path($m->{file_b});
3928 my $pbat = $self->ensure_path($dir);
3929 my $fbat = $self->add_file($self->repo_path($m->{file_b}), $pbat,
3930 $self->url_path($m->{file_a}), $self->{r});
3931 print "\tR\t$m->{file_a} => $m->{file_b}\n" unless $q;
3932 $self->chg_file($fbat, $m);
3933 $self->close_file($fbat,undef,$self->{pool});
3935 ($dir, $file) = split_path($m->{file_a});
3936 $pbat = $self->ensure_path($dir);
3937 $self->delete_entry($m->{file_a}, $pbat);
3938 }
3940 sub M {
3941 my ($self, $m, $q) = @_;
3942 my ($dir, $file) = split_path($m->{file_b});
3943 my $pbat = $self->ensure_path($dir);
3944 my $fbat = $self->open_file($self->repo_path($m->{file_b}),
3945 $pbat,$self->{r},$self->{pool});
3946 print "\t$m->{chg}\t$m->{file_b}\n" unless $q;
3947 $self->chg_file($fbat, $m);
3948 $self->close_file($fbat,undef,$self->{pool});
3949 }
3951 sub T { shift->M(@_) }
3953 sub change_file_prop {
3954 my ($self, $fbat, $pname, $pval) = @_;
3955 $self->SUPER::change_file_prop($fbat, $pname, $pval, $self->{pool});
3956 }
3958 sub chg_file {
3959 my ($self, $fbat, $m) = @_;
3960 if ($m->{mode_b} =~ /755$/ && $m->{mode_a} !~ /755$/) {
3961 $self->change_file_prop($fbat,'svn:executable','*');
3962 } elsif ($m->{mode_b} !~ /755$/ && $m->{mode_a} =~ /755$/) {
3963 $self->change_file_prop($fbat,'svn:executable',undef);
3964 }
3965 my $fh = IO::File->new_tmpfile or croak $!;
3966 if ($m->{mode_b} =~ /^120/) {
3967 print $fh 'link ' or croak $!;
3968 $self->change_file_prop($fbat,'svn:special','*');
3969 } elsif ($m->{mode_a} =~ /^120/ && $m->{mode_b} !~ /^120/) {
3970 $self->change_file_prop($fbat,'svn:special',undef);
3971 }
3972 defined(my $pid = fork) or croak $!;
3973 if (!$pid) {
3974 open STDOUT, '>&', $fh or croak $!;
3975 exec qw/git-cat-file blob/, $m->{sha1_b} or croak $!;
3976 }
3977 waitpid $pid, 0;
3978 croak $? if $?;
3979 $fh->flush == 0 or croak $!;
3980 seek $fh, 0, 0 or croak $!;
3982 my $md5 = Digest::MD5->new;
3983 $md5->addfile($fh) or croak $!;
3984 seek $fh, 0, 0 or croak $!;
3986 my $exp = $md5->hexdigest;
3987 my $pool = SVN::Pool->new;
3988 my $atd = $self->apply_textdelta($fbat, undef, $pool);
3989 my $got = SVN::TxDelta::send_stream($fh, @$atd, $pool);
3990 die "Checksum mismatch\nexpected: $exp\ngot: $got\n" if ($got ne $exp);
3991 $pool->clear;
3993 close $fh or croak $!;
3994 }
3996 sub D {
3997 my ($self, $m, $q) = @_;
3998 my ($dir, $file) = split_path($m->{file_b});
3999 my $pbat = $self->ensure_path($dir);
4000 print "\tD\t$m->{file_b}\n" unless $q;
4001 $self->delete_entry($m->{file_b}, $pbat);
4002 }
4004 sub close_edit {
4005 my ($self) = @_;
4006 my ($p,$bat) = ($self->{pool}, $self->{bat});
4007 foreach (sort { $b =~ tr#/#/# <=> $a =~ tr#/#/# } keys %$bat) {
4008 $self->close_directory($bat->{$_}, $p);
4009 }
4010 $self->SUPER::close_edit($p);
4011 $p->clear;
4012 }
4014 sub abort_edit {
4015 my ($self) = @_;
4016 $self->SUPER::abort_edit($self->{pool});
4017 $self->{pool}->clear;
4018 }
4020 __END__
4022 Data structures:
4024 $svn_log hashref (as returned by svn_log_raw)
4025 {
4026 fh => file handle of the log file,
4027 state => state of the log file parser (sep/msg/rev/msg_start...)
4028 }
4030 $log_msg hashref as returned by next_log_entry($svn_log)
4031 {
4032 msg => 'whitespace-formatted log entry
4033 ', # trailing newline is preserved
4034 revision => '8', # integer
4035 date => '2004-02-24T17:01:44.108345Z', # commit date
4036 author => 'committer name'
4037 };
4040 @mods = array of diff-index line hashes, each element represents one line
4041 of diff-index output
4043 diff-index line ($m hash)
4044 {
4045 mode_a => first column of diff-index output, no leading ':',
4046 mode_b => second column of diff-index output,
4047 sha1_b => sha1sum of the final blob,
4048 chg => change type [MCRADT],
4049 file_a => original file name of a file (iff chg is 'C' or 'R')
4050 file_b => new/current file name of a file (any chg)
4051 }
4052 ;
4054 # retval of read_url_paths{,_all}();
4055 $l_map = {
4056 # repository root url
4057 'https://svn.musicpd.org' => {
4058 # repository path # GIT_SVN_ID
4059 'mpd/trunk' => 'trunk',
4060 'mpd/tags/0.11.5' => 'tags/0.11.5',
4061 },
4062 }
4064 Notes:
4065 I don't trust the each() function on unless I created %hash myself
4066 because the internal iterator may not have started at base.