8abff90d97133dff451d80a84c287071c1102d60
1#!/usr/bin/env perl
2# Copyright (C) 2006, Eric Wong <normalperson@yhbt.net>
3# License: GPL v2 or later
4use warnings;
5use strict;
6use vars qw/ $AUTHOR $VERSION
7 $SVN_URL
8 $GIT_SVN_INDEX $GIT_SVN
9 $GIT_DIR $GIT_SVN_DIR $REVDB/;
10$AUTHOR = 'Eric Wong <normalperson@yhbt.net>';
11$VERSION = '@@GIT_VERSION@@';
12use Cwd qw/abs_path/;
14$GIT_DIR = abs_path($ENV{GIT_DIR} || '.git');
15$ENV{GIT_DIR} = $GIT_DIR;
16my $LC_ALL = $ENV{LC_ALL};
18my $TZ = $ENV{TZ};
19# make sure the svn binary gives consistent output between locales and TZs:
20$ENV{TZ} = 'UTC';
21$ENV{LC_ALL} = 'C';
22$| = 1; # unbuffer STDOUT
23# properties that we do not log:
25my %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);
33sub fatal (@) { print STDERR @_; exit 1 }
35require SVN::Core; # use()-ing this causes segfaults for me... *shrug*
36require SVN::Ra;
37require SVN::Delta;
38if ($SVN::Core::VERSION lt '1.1.0') {
39 fatal "Need SVN::Core 1.1.0 or better (got $SVN::Core::VERSION)\n";
40}
41push @Git::SVN::Ra::ISA, 'SVN::Ra';
42push @SVN::Git::Editor::ISA, 'SVN::Delta::Editor';
43push @SVN::Git::Fetcher::ISA, 'SVN::Delta::Editor';
44use Carp qw/croak/;
45use IO::File qw//;
46use File::Basename qw/dirname basename/;
47use File::Path qw/mkpath/;
48use Getopt::Long qw/:config gnu_getopt no_ignore_case auto_abbrev pass_through/;
49use POSIX qw/strftime/;
50use IPC::Open3;
51use Memoize;
52use Git;
53memoize('revisions_eq');
54memoize('cmt_metadata');
55memoize('get_commit_time');
56BEGIN {
58 my $s;
59 foreach (qw/command command_oneline command_noisy command_output_pipe
60 command_input_pipe command_close_pipe/) {
61 $s .= "*SVN::Git::Editor::$_ = *SVN::Git::Fetcher::$_ = ".
62 "*$_ = *Git::$_; ";
63 }
64 eval $s;
65}
66my ($SVN);
68my $_optimize_commits = 1 unless $ENV{GIT_SVN_NO_OPTIMIZE_COMMITS};
70my $sha1 = qr/[a-f\d]{40}/;
71my $sha1_short = qr/[a-f\d]{4,40}/;
72my $_esc_color = qr/(?:\033\[(?:(?:\d+;)*\d*)?m)*/;
73my ($_revision,$_stdin,$_help,$_rmdir,$_edit,
74 $_find_copies_harder, $_l, $_cp_similarity, $_cp_remote,
75 $_repack, $_repack_nr, $_repack_flags, $_q,
76 $_message, $_file, $_no_metadata,
77 $_template, $_shared, $_no_default_regex, $_no_graft_copy,
78 $_limit, $_verbose, $_incremental, $_oneline, $_l_fmt, $_show_commit,
79 $_version, $_upgrade, $_authors, $_branch_all_refs, @_opt_m,
80 $_merge, $_strategy, $_dry_run, $_ignore_nodate, $_non_recursive,
81 $_pager, $_color, $_prefix);
82my (@_branch_from, %tree_map, %users, %rusers);
83my @repo_path_split_cache;
84use vars qw/$_follow_parent/;
85my %fc_opts = ( 'branch|b=s' => \@_branch_from,
87 'follow-parent|follow' => \$_follow_parent,
88 'branch-all-refs|B' => \$_branch_all_refs,
89 'authors-file|A=s' => \$_authors,
90 'repack:i' => \$_repack,
91 'no-metadata' => \$_no_metadata,
92 'quiet|q' => \$_q,
93 'username=s' => \$Git::SVN::Prompt::_username,
94 'config-dir=s' => \$Git::SVN::Ra::config_dir,
95 'no-auth-cache' => \$Git::SVN::Prompt::_no_auth_cache,
96 'ignore-nodate' => \$_ignore_nodate,
97 'repack-flags|repack-args|repack-opts=s' => \$_repack_flags);
98my ($_trunk, $_tags, $_branches);
100my %multi_opts = ( 'trunk|T=s' => \$_trunk,
101 'tags|t=s' => \$_tags,
102 'branches|b=s' => \$_branches );
103my %init_opts = ( 'template=s' => \$_template, 'shared' => \$_shared );
104my %cmt_opts = ( 'edit|e' => \$_edit,
105 'rmdir' => \$_rmdir,
106 'find-copies-harder' => \$_find_copies_harder,
107 'l=i' => \$_l,
108 'copy-similarity|C=i'=> \$_cp_similarity
109);
110my %cmd = (
112 fetch => [ \&cmd_fetch, "Download new revisions from SVN",
113 { 'revision|r=s' => \$_revision, %fc_opts } ],
114 init => [ \&init, "Initialize a repo for tracking" .
115 " (requires URL argument)",
116 \%init_opts ],
117 dcommit => [ \&dcommit, 'Commit several diffs to merge with upstream',
118 { 'merge|m|M' => \$_merge,
119 'strategy|s=s' => \$_strategy,
120 'dry-run|n' => \$_dry_run,
121 %cmt_opts, %fc_opts } ],
122 'set-tree' => [ \&commit, "Set an SVN repository to a git tree-ish",
123 { 'stdin|' => \$_stdin, %cmt_opts, %fc_opts, } ],
124 'show-ignore' => [ \&show_ignore, "Show svn:ignore listings",
125 { 'revision|r=i' => \$_revision } ],
126 rebuild => [ \&rebuild, "Rebuild git-svn metadata (after git clone)",
127 { 'copy-remote|remote=s' => \$_cp_remote,
128 'upgrade' => \$_upgrade } ],
129 'graft-branches' => [ \&graft_branches,
130 'Detect merges/branches from already imported history',
131 { 'merge-rx|m' => \@_opt_m,
132 'branch|b=s' => \@_branch_from,
133 'branch-all-refs|B' => \$_branch_all_refs,
134 'no-default-regex' => \$_no_default_regex,
135 'no-graft-copy' => \$_no_graft_copy } ],
136 'multi-init' => [ \&multi_init,
137 'Initialize multiple trees (like git-svnimport)',
138 { %multi_opts, %init_opts,
139 'revision|r=i' => \$_revision,
140 'username=s' => \$Git::SVN::Prompt::_username,
141 'config-dir=s' => \$Git::SVN::Ra::config_dir,
142 'no-auth-cache' => \$Git::SVN::Prompt::_no_auth_cache,
143 'prefix=s' => \$_prefix,
144 } ],
145 'multi-fetch' => [ \&multi_fetch,
146 'Fetch multiple trees (like git-svnimport)',
147 \%fc_opts ],
148 'log' => [ \&show_log, 'Show commit logs',
149 { 'limit=i' => \$_limit,
150 'revision|r=s' => \$_revision,
151 'verbose|v' => \$_verbose,
152 'incremental' => \$_incremental,
153 'oneline' => \$_oneline,
154 'show-commit' => \$_show_commit,
155 'non-recursive' => \$_non_recursive,
156 'authors-file|A=s' => \$_authors,
157 'color' => \$_color,
158 'pager=s' => \$_pager,
159 } ],
160 'commit-diff' => [ \&commit_diff, 'Commit a diff between two trees',
161 { 'message|m=s' => \$_message,
162 'file|F=s' => \$_file,
163 'revision|r=s' => \$_revision,
164 %cmt_opts } ],
165);
166my $cmd;
168for (my $i = 0; $i < @ARGV; $i++) {
169 if (defined $cmd{$ARGV[$i]}) {
170 $cmd = $ARGV[$i];
171 splice @ARGV, $i, 1;
172 last;
173 }
174};
175my %opts = %{$cmd{$cmd}->[2]} if (defined $cmd);
177read_repo_config(\%opts);
179my $rv = GetOptions(%opts, 'help|H|h' => \$_help,
180 'version|V' => \$_version,
181 'id|i=s' => \$GIT_SVN);
182exit 1 if (!$rv && $cmd ne 'log');
183set_default_vals();
185usage(0) if $_help;
186version() if $_version;
187usage(1) unless defined $cmd;
188init_vars();
189load_authors() if $_authors;
190load_all_refs() if $_branch_all_refs;
191migration_check() unless $cmd =~ /^(?:init|rebuild|multi-init|commit-diff)$/;
192$cmd{$cmd}->[0]->(@ARGV);
193exit 0;
194####################### primary functions ######################
196sub usage {
197 my $exit = shift || 0;
198 my $fd = $exit ? \*STDERR : \*STDOUT;
199 print $fd <<"";
200git-svn - bidirectional operations between a single Subversion tree and git
201Usage: $0 <command> [options] [arguments]\n
202 print $fd "Available commands:\n" unless $cmd;
204 foreach (sort keys %cmd) {
206 next if $cmd && $cmd ne $_;
207 print $fd ' ',pack('A17',$_),$cmd{$_}->[1],"\n";
208 foreach (keys %{$cmd{$_}->[2]}) {
209 # prints out arguments as they should be passed:
210 my $x = s#[:=]s$## ? '<arg>' : s#[:=]i$## ? '<num>' : '';
211 print $fd ' ' x 21, join(', ', map { length $_ > 1 ?
212 "--$_" : "-$_" }
213 split /\|/,$_)," $x\n";
214 }
215 }
216 print $fd <<"";
217\nGIT_SVN_ID may be set in the environment or via the --id/-i switch to an
218arbitrary identifier if you're tracking multiple SVN branches/repositories in
219one git repository and want to keep them separate. See git-svn(1) for more
220information.
221 exit $exit;
223}
224sub version {
226 print "git-svn version $VERSION (svn $SVN::Core::VERSION)\n";
227 exit 0;
228}
229sub rebuild {
231 if (!verify_ref("refs/remotes/$GIT_SVN^0")) {
232 copy_remote_ref();
233 }
234 $SVN_URL = shift or undef;
235 my $newest_rev = 0;
236 if ($_upgrade) {
237 command_noisy('update-ref',"refs/remotes/$GIT_SVN","
238 $GIT_SVN-HEAD");
239 } else {
240 check_upgrade_needed();
241 }
242 my ($rev_list, $ctx) = command_output_pipe("rev-list",
244 "refs/remotes/$GIT_SVN");
245 my $latest;
246 my $svn_uuid;
247 while (<$rev_list>) {
248 chomp;
249 my $c = $_;
250 croak "Non-SHA1: $c\n" unless $c =~ /^$sha1$/o;
251 my @commit = grep(/^git-svn-id: /,
252 command(qw/cat-file commit/, $c));
253 next if (!@commit); # skip merges
254 my ($url, $rev, $uuid) = extract_metadata($commit[$#commit]);
255 if (!defined $rev || !$uuid) {
256 croak "Unable to extract revision or UUID from ",
257 "$c, $commit[$#commit]\n";
258 }
259 # if we merged or otherwise started elsewhere, this is
261 # how we break out of it
262 next if (defined $svn_uuid && ($uuid ne $svn_uuid));
263 next if (defined $SVN_URL && defined $url && ($url ne $SVN_URL));
264 unless (defined $latest) {
266 if (!$SVN_URL && !$url) {
267 croak "SVN repository location required: $url\n";
268 }
269 $SVN_URL ||= $url;
270 $svn_uuid ||= $uuid;
271 setup_git_svn();
272 $latest = $rev;
273 }
274 revdb_set($REVDB, $rev, $c);
275 print "r$rev = $c\n";
276 $newest_rev = $rev if ($rev > $newest_rev);
277 }
278 command_close_pipe($rev_list, $ctx);
279}
280sub init {
282 my $url = shift or die "SVN repository location required " .
283 "as a command-line argument\n";
284 $url =~ s!/+$!!; # strip trailing slash
285 if (my $repo_path = shift) {
287 unless (-d $repo_path) {
288 mkpath([$repo_path]);
289 }
290 $GIT_DIR = $ENV{GIT_DIR} = $repo_path . "/.git";
291 init_vars();
292 }
293 $SVN_URL = $url;
295 unless (-d $GIT_DIR) {
296 my @init_db = ('init');
297 push @init_db, "--template=$_template" if defined $_template;
298 push @init_db, "--shared" if defined $_shared;
299 command_noisy(@init_db);
300 }
301 setup_git_svn();
302}
303sub cmd_fetch {
305 fetch_child_id($GIT_SVN, @_);
306}
307sub fetch {
309 check_upgrade_needed();
310 $SVN_URL ||= file_to_s("$GIT_SVN_DIR/info/url");
311 my $ret = fetch_lib(@_);
312 if ($ret->{commit} && !verify_ref('refs/heads/master^0')) {
313 command_noisy(qw(update-ref refs/heads/master),$ret->{commit});
314 }
315 return $ret;
316}
317sub fetch_lib {
319 my (@parents) = @_;
320 $SVN_URL ||= file_to_s("$GIT_SVN_DIR/info/url");
321 $SVN ||= Git::SVN::Ra->new($SVN_URL);
322 my ($last_rev, $last_commit) = svn_grab_base_rev();
323 my ($base, $head) = libsvn_parse_revision($last_rev);
324 if ($base > $head) {
325 return { revision => $last_rev, commit => $last_commit }
326 }
327 my $index = set_index($GIT_SVN_INDEX);
328 # limit ourselves and also fork() since get_log won't release memory
330 # after processing a revision and SVN stuff seems to leak
331 my $inc = 1000;
332 my ($min, $max) = ($base, $head < $base+$inc ? $head : $base+$inc);
333 if (defined $last_commit) {
334 unless (-e $GIT_SVN_INDEX) {
335 command_noisy('read-tree', $last_commit);
336 }
337 my $x = command_oneline('write-tree');
338 my ($y) = (command(qw/cat-file commit/, $last_commit)
339 =~ /^tree ($sha1)/m);
340 if ($y ne $x) {
341 unlink $GIT_SVN_INDEX or croak $!;
342 command_noisy('read-tree', $last_commit);
343 }
344 $x = command_oneline('write-tree');
345 if ($y ne $x) {
346 print STDERR "trees ($last_commit) $y != $x\n",
347 "Something is seriously wrong...\n";
348 }
349 }
350 while (1) {
351 # fork, because using SVN::Pool with get_log() still doesn't
352 # seem to help enough to keep memory usage down.
353 defined(my $pid = fork) or croak $!;
354 if (!$pid) {
355 $SVN::Error::handler = \&libsvn_skip_unknown_revs;
356 # Yes I'm perfectly aware that the fourth argument
358 # below is the limit revisions number. Unfortunately
359 # performance sucks with it enabled, so it's much
360 # faster to fetch revision ranges instead of relying
361 # on the limiter.
362 $SVN->dup->get_log([''], $min, $max, 0, 1, 1,
363 sub {
364 my $log_msg;
365 if ($last_commit) {
366 $log_msg = libsvn_fetch(
367 $last_commit, @_);
368 $last_commit = git_commit(
369 $log_msg,
370 $last_commit,
371 @parents);
372 } else {
373 $log_msg = libsvn_new_tree(@_);
374 $last_commit = git_commit(
375 $log_msg, @parents);
376 }
377 });
378 exit 0;
379 }
380 waitpid $pid, 0;
381 croak $? if $?;
382 ($last_rev, $last_commit) = svn_grab_base_rev();
383 last if ($max >= $head);
384 $min = $max + 1;
385 $max += $inc;
386 $max = $head if ($max > $head);
387 $SVN = Git::SVN::Ra->new($SVN_URL);
388 }
389 restore_index($index);
390 return { revision => $last_rev, commit => $last_commit };
391}
392sub commit {
394 my (@commits) = @_;
395 check_upgrade_needed();
396 if ($_stdin || !@commits) {
397 print "Reading from stdin...\n";
398 @commits = ();
399 while (<STDIN>) {
400 if (/\b($sha1_short)\b/o) {
401 unshift @commits, $1;
402 }
403 }
404 }
405 my @revs;
406 foreach my $c (@commits) {
407 my @tmp = command('rev-parse',$c);
408 if (scalar @tmp == 1) {
409 push @revs, $tmp[0];
410 } elsif (scalar @tmp > 1) {
411 push @revs, reverse(command('rev-list',@tmp));
412 } else {
413 die "Failed to rev-parse $c\n";
414 }
415 }
416 commit_lib(@revs);
417 print "Done committing ",scalar @revs," revisions to SVN\n";
418}
419sub commit_lib {
421 my (@revs) = @_;
422 my ($r_last, $cmt_last) = svn_grab_base_rev();
423 defined $r_last or die "Must have an existing revision to commit\n";
424 my $fetched = fetch();
425 if ($r_last != $fetched->{revision}) {
426 print STDERR "There are new revisions that were fetched ",
427 "and need to be merged (or acknowledged) ",
428 "before committing.\n",
429 "last rev: $r_last\n",
430 " current: $fetched->{revision}\n";
431 exit 1;
432 }
433 my $commit_msg = "$GIT_SVN_DIR/.svn-commit.tmp.$$";
434 my $repo;
436 set_svn_commit_env();
437 foreach my $c (@revs) {
438 my $log_msg = get_commit_message($c, $commit_msg);
439 # fork for each commit because there's a memory leak I
441 # can't track down... (it's probably in the SVN code)
442 defined(my $pid = open my $fh, '-|') or croak $!;
443 if (!$pid) {
444 my $pool = SVN::Pool->new;
445 my $ed = SVN::Git::Editor->new(
446 { r => $r_last,
447 ra => $SVN->dup,
448 c => $c,
449 svn_path => $SVN->{svn_path},
450 },
451 $SVN->get_commit_editor(
452 $log_msg->{msg},
453 sub {
454 libsvn_commit_cb(
455 @_, $c,
456 $log_msg->{msg},
457 $r_last,
458 $cmt_last)
459 }, $pool)
460 );
461 my $mods = libsvn_checkout_tree($cmt_last, $c, $ed);
462 if (@$mods == 0) {
463 print "No changes\nr$r_last = $cmt_last\n";
464 $ed->abort_edit;
465 } else {
466 $ed->close_edit;
467 }
468 $pool->clear;
469 exit 0;
470 }
471 my ($r_new, $cmt_new, $no);
472 while (<$fh>) {
473 print $_;
474 chomp;
475 if (/^r(\d+) = ($sha1)$/o) {
476 ($r_new, $cmt_new) = ($1, $2);
477 } elsif ($_ eq 'No changes') {
478 $no = 1;
479 }
480 }
481 close $fh or exit 1;
482 if (! defined $r_new && ! defined $cmt_new) {
483 unless ($no) {
484 die "Failed to parse revision information\n";
485 }
486 } else {
487 ($r_last, $cmt_last) = ($r_new, $cmt_new);
488 }
489 }
490 $ENV{LC_ALL} = 'C';
491 unlink $commit_msg;
492}
493sub dcommit {
495 my $head = shift || 'HEAD';
496 my $gs = "refs/remotes/$GIT_SVN";
497 my @refs = command(qw/rev-list --no-merges/, "$gs..$head");
498 my $last_rev;
499 foreach my $d (reverse @refs) {
500 if (!verify_ref("$d~1")) {
501 die "Commit $d\n",
502 "has no parent commit, and therefore ",
503 "nothing to diff against.\n",
504 "You should be working from a repository ",
505 "originally created by git-svn\n";
506 }
507 unless (defined $last_rev) {
508 (undef, $last_rev, undef) = cmt_metadata("$d~1");
509 unless (defined $last_rev) {
510 die "Unable to extract revision information ",
511 "from commit $d~1\n";
512 }
513 }
514 if ($_dry_run) {
515 print "diff-tree $d~1 $d\n";
516 } else {
517 if (my $r = commit_diff("$d~1", $d, undef, $last_rev)) {
518 $last_rev = $r;
519 } # else: no changes, same $last_rev
520 }
521 }
522 return if $_dry_run;
523 fetch();
524 my @diff = command('diff-tree', 'HEAD', $gs, '--');
525 my @finish;
526 if (@diff) {
527 @finish = qw/rebase/;
528 push @finish, qw/--merge/ if $_merge;
529 push @finish, "--strategy=$_strategy" if $_strategy;
530 print STDERR "W: HEAD and $gs differ, using @finish:\n", @diff;
531 } else {
532 print "No changes between current HEAD and $gs\n",
533 "Resetting to the latest $gs\n";
534 @finish = qw/reset --mixed/;
535 }
536 command_noisy(@finish, $gs);
537}
538sub show_ignore {
540 $SVN_URL ||= file_to_s("$GIT_SVN_DIR/info/url");
541 my $repo;
542 $SVN ||= Git::SVN::Ra->new($SVN_URL);
543 my $r = defined $_revision ? $_revision : $SVN->get_latest_revnum;
544 libsvn_traverse_ignore(\*STDOUT, '', $r);
545}
546sub graft_branches {
548 my $gr_file = "$GIT_DIR/info/grafts";
549 my ($grafts, $comments) = read_grafts($gr_file);
550 my $gr_sha1;
551 if (%$grafts) {
553 # temporarily disable our grafts file to make this idempotent
554 chomp($gr_sha1 = command(qw/hash-object -w/,$gr_file));
555 rename $gr_file, "$gr_file~$gr_sha1" or croak $!;
556 }
557 my $l_map = read_url_paths();
559 my @re = map { qr/$_/is } @_opt_m if @_opt_m;
560 unless ($_no_default_regex) {
561 push @re, (qr/\b(?:merge|merging|merged)\s+with\s+([\w\.\-]+)/i,
562 qr/\b(?:merge|merging|merged)\s+([\w\.\-]+)/i,
563 qr/\b(?:from|of)\s+([\w\.\-]+)/i );
564 }
565 foreach my $u (keys %$l_map) {
566 if (@re) {
567 foreach my $p (keys %{$l_map->{$u}}) {
568 graft_merge_msg($grafts,$l_map,$u,$p,@re);
569 }
570 }
571 unless ($_no_graft_copy) {
572 graft_file_copy_lib($grafts,$l_map,$u);
573 }
574 }
575 graft_tree_joins($grafts);
576 write_grafts($grafts, $comments, $gr_file);
578 unlink "$gr_file~$gr_sha1" if $gr_sha1;
579}
580sub multi_init {
582 my $url = shift;
583 unless (defined $_trunk || defined $_branches || defined $_tags) {
584 usage(1);
585 }
586 if (defined $_trunk) {
587 my $trunk_url = complete_svn_url($url, $_trunk);
588 my $ch_id;
589 if ($GIT_SVN eq 'git-svn') {
590 $ch_id = 1;
591 $GIT_SVN = $ENV{GIT_SVN_ID} = 'trunk';
592 }
593 init_vars();
594 unless (-d $GIT_SVN_DIR) {
595 if ($ch_id) {
596 print "GIT_SVN_ID set to 'trunk' for ",
597 "$trunk_url ($_trunk)\n";
598 }
599 init($trunk_url);
600 command_noisy('config', 'svn.trunk', $trunk_url);
601 }
602 }
603 $_prefix = '' unless defined $_prefix;
604 complete_url_ls_init($url, $_branches, '--branches/-b', $_prefix);
605 complete_url_ls_init($url, $_tags, '--tags/-t', $_prefix . 'tags/');
606}
607sub multi_fetch {
609 # try to do trunk first, since branches/tags
610 # may be descended from it.
611 if (-e "$GIT_DIR/svn/trunk/info/url") {
612 fetch_child_id('trunk', @_);
613 }
614 rec_fetch('', "$GIT_DIR/svn", @_);
615}
616sub show_log {
618 my (@args) = @_;
619 my ($r_min, $r_max);
620 my $r_last = -1; # prevent dupes
621 rload_authors() if $_authors;
622 if (defined $TZ) {
623 $ENV{TZ} = $TZ;
624 } else {
625 delete $ENV{TZ};
626 }
627 if (defined $_revision) {
628 if ($_revision =~ /^(\d+):(\d+)$/) {
629 ($r_min, $r_max) = ($1, $2);
630 } elsif ($_revision =~ /^\d+$/) {
631 $r_min = $r_max = $_revision;
632 } else {
633 print STDERR "-r$_revision is not supported, use ",
634 "standard \'git log\' arguments instead\n";
635 exit 1;
636 }
637 }
638 config_pager();
640 @args = (git_svn_log_cmd($r_min, $r_max), @args);
641 my $log = command_output_pipe(@args);
642 run_pager();
643 my (@k, $c, $d);
644 while (<$log>) {
646 if (/^${_esc_color}commit ($sha1_short)/o) {
647 my $cmt = $1;
648 if ($c && cmt_showable($c) && $c->{r} != $r_last) {
649 $r_last = $c->{r};
650 process_commit($c, $r_min, $r_max, \@k) or
651 goto out;
652 }
653 $d = undef;
654 $c = { c => $cmt };
655 } elsif (/^${_esc_color}author (.+) (\d+) ([\-\+]?\d+)$/) {
656 get_author_info($c, $1, $2, $3);
657 } elsif (/^${_esc_color}(?:tree|parent|committer) /) {
658 # ignore
659 } elsif (/^${_esc_color}:\d{6} \d{6} $sha1_short/o) {
660 push @{$c->{raw}}, $_;
661 } elsif (/^${_esc_color}[ACRMDT]\t/) {
662 # we could add $SVN->{svn_path} here, but that requires
663 # remote access at the moment (repo_path_split)...
664 s#^(${_esc_color})([ACRMDT])\t#$1 $2 #;
665 push @{$c->{changed}}, $_;
666 } elsif (/^${_esc_color}diff /) {
667 $d = 1;
668 push @{$c->{diff}}, $_;
669 } elsif ($d) {
670 push @{$c->{diff}}, $_;
671 } elsif (/^${_esc_color} (git-svn-id:.+)$/) {
672 ($c->{url}, $c->{r}, undef) = extract_metadata($1);
673 } elsif (s/^${_esc_color} //) {
674 push @{$c->{l}}, $_;
675 }
676 }
677 if ($c && defined $c->{r} && $c->{r} != $r_last) {
678 $r_last = $c->{r};
679 process_commit($c, $r_min, $r_max, \@k);
680 }
681 if (@k) {
682 my $swap = $r_max;
683 $r_max = $r_min;
684 $r_min = $swap;
685 process_commit($_, $r_min, $r_max) foreach reverse @k;
686 }
687out:
688 close $log;
689 print '-' x72,"\n" unless $_incremental || $_oneline;
690}
691sub commit_diff_usage {
693 print STDERR "Usage: $0 commit-diff <tree-ish> <tree-ish> [<URL>]\n";
694 exit 1
695}
696sub commit_diff {
698 my $ta = shift or commit_diff_usage();
699 my $tb = shift or commit_diff_usage();
700 if (!eval { $SVN_URL = shift || file_to_s("$GIT_SVN_DIR/info/url") }) {
701 print STDERR "Needed URL or usable git-svn id command-line\n";
702 commit_diff_usage();
703 }
704 my $r = shift;
705 unless (defined $r) {
706 if (defined $_revision) {
707 $r = $_revision
708 } else {
709 die "-r|--revision is a required argument\n";
710 }
711 }
712 if (defined $_message && defined $_file) {
713 print STDERR "Both --message/-m and --file/-F specified ",
714 "for the commit message.\n",
715 "I have no idea what you mean\n";
716 exit 1;
717 }
718 if (defined $_file) {
719 $_message = file_to_s($_file);
720 } else {
721 $_message ||= get_commit_message($tb,
722 "$GIT_DIR/.svn-commit.tmp.$$")->{msg};
723 }
724 $SVN ||= Git::SVN::Ra->new($SVN_URL);
725 if ($r eq 'HEAD') {
726 $r = $SVN->get_latest_revnum;
727 } elsif ($r !~ /^\d+$/) {
728 die "revision argument: $r not understood by git-svn\n";
729 }
730 my $rev_committed;
731 my $pool = SVN::Pool->new;
732 my $ed = SVN::Git::Editor->new({ r => $r,
733 ra => $SVN->dup,
734 c => $tb,
735 svn_path => $SVN->{svn_path}
736 },
737 $SVN->get_commit_editor($_message,
738 sub {
739 $rev_committed = $_[0];
740 print "Committed $_[0]\n";
741 },
742 $pool)
743 );
744 eval {
745 my $mods = libsvn_checkout_tree($ta, $tb, $ed);
746 if (@$mods == 0) {
747 print "No changes\n$ta == $tb\n";
748 $ed->abort_edit;
749 } else {
750 $ed->close_edit;
751 }
752 };
753 $pool->clear;
754 fatal "$@\n" if $@;
755 $_message = $_file = undef;
756 return $rev_committed;
757}
758########################### utility functions #########################
760sub cmt_showable {
762 my ($c) = @_;
763 return 1 if defined $c->{r};
764 if ($c->{l} && $c->{l}->[-1] eq "...\n" &&
765 $c->{a_raw} =~ /\@([a-f\d\-]+)>$/) {
766 my @msg = command(qw/cat-file commit/, $c->{c});
767 shift @msg while ($msg[0] ne "\n");
768 shift @msg;
769 @{$c->{l}} = grep !/^git-svn-id: /, @msg;
770 (undef, $c->{r}, undef) = extract_metadata(
772 (grep(/^git-svn-id: /, @msg))[-1]);
773 }
774 return defined $c->{r};
775}
776sub log_use_color {
778 return 1 if $_color;
779 my ($dc, $dcvar);
780 $dcvar = 'color.diff';
781 $dc = `git-config --get $dcvar`;
782 if ($dc eq '') {
783 # nothing at all; fallback to "diff.color"
784 $dcvar = 'diff.color';
785 $dc = `git-config --get $dcvar`;
786 }
787 chomp($dc);
788 if ($dc eq 'auto') {
789 my $pc;
790 $pc = `git-config --get color.pager`;
791 if ($pc eq '') {
792 # does not have it -- fallback to pager.color
793 $pc = `git-config --bool --get pager.color`;
794 }
795 else {
796 $pc = `git-config --bool --get color.pager`;
797 if ($?) {
798 $pc = 'false';
799 }
800 }
801 chomp($pc);
802 if (-t *STDOUT || (defined $_pager && $pc eq 'true')) {
803 return ($ENV{TERM} && $ENV{TERM} ne 'dumb');
804 }
805 return 0;
806 }
807 return 0 if $dc eq 'never';
808 return 1 if $dc eq 'always';
809 chomp($dc = `git-config --bool --get $dcvar`);
810 return ($dc eq 'true');
811}
812sub git_svn_log_cmd {
814 my ($r_min, $r_max) = @_;
815 my @cmd = (qw/log --abbrev-commit --pretty=raw
816 --default/, "refs/remotes/$GIT_SVN");
817 push @cmd, '-r' unless $_non_recursive;
818 push @cmd, qw/--raw --name-status/ if $_verbose;
819 push @cmd, '--color' if log_use_color();
820 return @cmd unless defined $r_max;
821 if ($r_max == $r_min) {
822 push @cmd, '--max-count=1';
823 if (my $c = revdb_get($REVDB, $r_max)) {
824 push @cmd, $c;
825 }
826 } else {
827 my ($c_min, $c_max);
828 $c_max = revdb_get($REVDB, $r_max);
829 $c_min = revdb_get($REVDB, $r_min);
830 if (defined $c_min && defined $c_max) {
831 if ($r_max > $r_max) {
832 push @cmd, "$c_min..$c_max";
833 } else {
834 push @cmd, "$c_max..$c_min";
835 }
836 } elsif ($r_max > $r_min) {
837 push @cmd, $c_max;
838 } else {
839 push @cmd, $c_min;
840 }
841 }
842 return @cmd;
843}
844sub fetch_child_id {
846 my $id = shift;
847 print "Fetching $id\n";
848 my $ref = "$GIT_DIR/refs/remotes/$id";
849 defined(my $pid = open my $fh, '-|') or croak $!;
850 if (!$pid) {
851 $GIT_SVN = $ENV{GIT_SVN_ID} = $id;
852 init_vars();
853 fetch(@_);
854 exit 0;
855 }
856 while (<$fh>) {
857 print $_;
858 check_repack() if (/^r\d+ = $sha1/o);
859 }
860 close $fh or croak $?;
861}
862sub rec_fetch {
864 my ($pfx, $p, @args) = @_;
865 my @dir;
866 foreach (sort <$p/*>) {
867 if (-r "$_/info/url") {
868 $pfx .= '/' if $pfx && $pfx !~ m!/$!;
869 my $id = $pfx . basename $_;
870 next if $id eq 'trunk';
871 fetch_child_id($id, @args);
872 } elsif (-d $_) {
873 push @dir, $_;
874 }
875 }
876 foreach (@dir) {
877 my $x = $_;
878 $x =~ s!^\Q$GIT_DIR\E/svn/!!;
879 rec_fetch($x, $_);
880 }
881}
882sub complete_svn_url {
884 my ($url, $path) = @_;
885 $path =~ s#/+$##;
886 $url =~ s#/+$## if $url;
887 if ($path !~ m#^[a-z\+]+://#) {
888 $path = '/' . $path if ($path !~ m#^/#);
889 if (!defined $url || $url !~ m#^[a-z\+]+://#) {
890 fatal("E: '$path' is not a complete URL ",
891 "and a separate URL is not specified\n");
892 }
893 $path = $url . $path;
894 }
895 return $path;
896}
897sub complete_url_ls_init {
899 my ($url, $path, $switch, $pfx) = @_;
900 unless ($path) {
901 print STDERR "W: $switch not specified\n";
902 return;
903 }
904 my $full_url = complete_svn_url($url, $path);
905 my @ls = libsvn_ls_fullurl($full_url);
906 defined(my $pid = fork) or croak $!;
907 if (!$pid) {
908 foreach my $u (map { "$full_url/$_" } (grep m!/$!, @ls)) {
909 $u =~ s#/+$##;
910 if ($u !~ m!\Q$full_url\E/(.+)$!) {
911 print STDERR "W: Unrecognized URL: $u\n";
912 die "This should never happen\n";
913 }
914 # don't try to init already existing refs
915 my $id = $pfx.$1;
916 $GIT_SVN = $ENV{GIT_SVN_ID} = $id;
917 init_vars();
918 unless (-d $GIT_SVN_DIR) {
919 print "init $u => $id\n";
920 init($u);
921 }
922 }
923 exit 0;
924 }
925 waitpid $pid, 0;
926 croak $? if $?;
927 my ($n) = ($switch =~ /^--(\w+)/);
928 command_noisy('config', "svn.$n", $full_url);
929}
930sub common_prefix {
932 my $paths = shift;
933 my %common;
934 foreach (@$paths) {
935 my @tmp = split m#/#, $_;
936 my $p = '';
937 while (my $x = shift @tmp) {
938 $p .= "/$x";
939 $common{$p} ||= 0;
940 $common{$p}++;
941 }
942 }
943 foreach (sort {length $b <=> length $a} keys %common) {
944 if ($common{$_} == @$paths) {
945 return $_;
946 }
947 }
948 return '';
949}
950# grafts set here are 'stronger' in that they're based on actual tree
952# matches, and won't be deleted from merge-base checking in write_grafts()
953sub graft_tree_joins {
954 my $grafts = shift;
955 map_tree_joins() if (@_branch_from && !%tree_map);
956 return unless %tree_map;
957 git_svn_each(sub {
959 my $i = shift;
960 my @args = (qw/rev-list --pretty=raw/, "refs/remotes/$i");
961 my ($fh, $ctx) = command_output_pipe(@args);
962 while (<$fh>) {
963 next unless /^commit ($sha1)$/o;
964 my $c = $1;
965 my ($t) = (<$fh> =~ /^tree ($sha1)$/o);
966 next unless $tree_map{$t};
967 my $l;
969 do {
970 $l = readline $fh;
971 } until ($l =~ /^committer (?:.+) (\d+) ([\-\+]?\d+)$/);
972 my ($s, $tz) = ($1, $2);
974 if ($tz =~ s/^\+//) {
975 $s += tz_to_s_offset($tz);
976 } elsif ($tz =~ s/^\-//) {
977 $s -= tz_to_s_offset($tz);
978 }
979 my ($url_a, $r_a, $uuid_a) = cmt_metadata($c);
981 foreach my $p (@{$tree_map{$t}}) {
983 next if $p eq $c;
984 my $mb = eval { command('merge-base', $c, $p) };
985 next unless ($@ || $?);
986 if (defined $r_a) {
987 # see if SVN says it's a relative
988 my ($url_b, $r_b, $uuid_b) =
989 cmt_metadata($p);
990 next if (defined $url_b &&
991 defined $url_a &&
992 ($url_a eq $url_b) &&
993 ($uuid_a eq $uuid_b));
994 if ($uuid_a eq $uuid_b) {
995 if ($r_b < $r_a) {
996 $grafts->{$c}->{$p} = 2;
997 next;
998 } elsif ($r_b > $r_a) {
999 $grafts->{$p}->{$c} = 2;
1000 next;
1001 }
1002 }
1003 }
1004 my $ct = get_commit_time($p);
1005 if ($ct < $s) {
1006 $grafts->{$c}->{$p} = 2;
1007 } elsif ($ct > $s) {
1008 $grafts->{$p}->{$c} = 2;
1009 }
1010 # what should we do when $ct == $s ?
1011 }
1012 }
1013 command_close_pipe($fh, $ctx);
1014 });
1015}
1016sub graft_file_copy_lib {
1018 my ($grafts, $l_map, $u) = @_;
1019 my $tree_paths = $l_map->{$u};
1020 my $pfx = common_prefix([keys %$tree_paths]);
1021 my ($repo, $path) = repo_path_split($u.$pfx);
1022 $SVN = Git::SVN::Ra->new($repo);
1023 my ($base, $head) = libsvn_parse_revision();
1025 my $inc = 1000;
1026 my ($min, $max) = ($base, $head < $base+$inc ? $head : $base+$inc);
1027 my $eh = $SVN::Error::handler;
1028 $SVN::Error::handler = \&libsvn_skip_unknown_revs;
1029 while (1) {
1030 $SVN->dup->get_log([$path], $min, $max, 0, 2, 1,
1031 sub {
1032 libsvn_graft_file_copies($grafts, $tree_paths,
1033 $path, @_);
1034 });
1035 last if ($max >= $head);
1036 $min = $max + 1;
1037 $max += $inc;
1038 $max = $head if ($max > $head);
1039 }
1040 $SVN::Error::handler = $eh;
1041}
1042sub process_merge_msg_matches {
1044 my ($grafts, $l_map, $u, $p, $c, @matches) = @_;
1045 my (@strong, @weak);
1046 foreach (@matches) {
1047 # merging with ourselves is not interesting
1048 next if $_ eq $p;
1049 if ($l_map->{$u}->{$_}) {
1050 push @strong, $_;
1051 } else {
1052 push @weak, $_;
1053 }
1054 }
1055 foreach my $w (@weak) {
1056 last if @strong;
1057 # no exact match, use branch name as regexp.
1058 my $re = qr/\Q$w\E/i;
1059 foreach (keys %{$l_map->{$u}}) {
1060 if (/$re/) {
1061 push @strong, $l_map->{$u}->{$_};
1062 last;
1063 }
1064 }
1065 last if @strong;
1066 $w = basename($w);
1067 $re = qr/\Q$w\E/i;
1068 foreach (keys %{$l_map->{$u}}) {
1069 if (/$re/) {
1070 push @strong, $l_map->{$u}->{$_};
1071 last;
1072 }
1073 }
1074 }
1075 my ($rev) = ($c->{m} =~ /^git-svn-id:\s(?:\S+?)\@(\d+)
1076 \s(?:[a-f\d\-]+)$/xsm);
1077 unless (defined $rev) {
1078 ($rev) = ($c->{m} =~/^git-svn-id:\s(\d+)
1079 \@(?:[a-f\d\-]+)/xsm);
1080 return unless defined $rev;
1081 }
1082 foreach my $m (@strong) {
1083 my ($r0, $s0) = find_rev_before($rev, $m, 1);
1084 $grafts->{$c->{c}}->{$s0} = 1 if defined $s0;
1085 }
1086}
1087sub graft_merge_msg {
1089 my ($grafts, $l_map, $u, $p, @re) = @_;
1090 my $x = $l_map->{$u}->{$p};
1092 my $rl = rev_list_raw("refs/remotes/$x");
1093 while (my $c = next_rev_list_entry($rl)) {
1094 foreach my $re (@re) {
1095 my (@br) = ($c->{m} =~ /$re/g);
1096 next unless @br;
1097 process_merge_msg_matches($grafts,$l_map,$u,$p,$c,@br);
1098 }
1099 }
1100}
1101sub verify_ref {
1103 my ($ref) = @_;
1104 eval { command_oneline([ 'rev-parse', '--verify', $ref ],
1105 { STDERR => 0 }); };
1106}
1107sub repo_path_split {
1109 my $full_url = shift;
1110 $full_url =~ s#/+$##;
1111 foreach (@repo_path_split_cache) {
1113 if ($full_url =~ s#$_##) {
1114 my $u = $1;
1115 $full_url =~ s#^/+##;
1116 return ($u, $full_url);
1117 }
1118 }
1119 my $tmp = Git::SVN::Ra->new($full_url);
1120 return ($tmp->{repos_root}, $tmp->{svn_path});
1121}
1122sub setup_git_svn {
1124 defined $SVN_URL or croak "SVN repository location required\n";
1125 unless (-d $GIT_DIR) {
1126 croak "GIT_DIR=$GIT_DIR does not exist!\n";
1127 }
1128 mkpath([$GIT_SVN_DIR]);
1129 mkpath(["$GIT_SVN_DIR/info"]);
1130 open my $fh, '>>',$REVDB or croak $!;
1131 close $fh;
1132 s_to_file($SVN_URL,"$GIT_SVN_DIR/info/url");
1133}
1135sub get_tree_from_treeish {
1137 my ($treeish) = @_;
1138 croak "Not a sha1: $treeish\n" unless $treeish =~ /^$sha1$/o;
1139 my $type = command_oneline(qw/cat-file -t/, $treeish);
1140 my $expected;
1141 while ($type eq 'tag') {
1142 ($treeish, $type) = command(qw/cat-file tag/, $treeish);
1143 }
1144 if ($type eq 'commit') {
1145 $expected = (grep /^tree /, command(qw/cat-file commit/,
1146 $treeish))[0];
1147 ($expected) = ($expected =~ /^tree ($sha1)$/);
1148 die "Unable to get tree from $treeish\n" unless $expected;
1149 } elsif ($type eq 'tree') {
1150 $expected = $treeish;
1151 } else {
1152 die "$treeish is a $type, expected tree, tag or commit\n";
1153 }
1154 return $expected;
1155}
1156sub get_diff {
1158 my ($from, $treeish) = @_;
1159 print "diff-tree $from $treeish\n";
1160 my @diff_tree = qw(diff-tree -z -r);
1161 if ($_cp_similarity) {
1162 push @diff_tree, "-C$_cp_similarity";
1163 } else {
1164 push @diff_tree, '-C';
1165 }
1166 push @diff_tree, '--find-copies-harder' if $_find_copies_harder;
1167 push @diff_tree, "-l$_l" if defined $_l;
1168 push @diff_tree, $from, $treeish;
1169 my ($diff_fh, $ctx) = command_output_pipe(@diff_tree);
1170 local $/ = "\0";
1171 my $state = 'meta';
1172 my @mods;
1173 while (<$diff_fh>) {
1174 chomp $_; # this gets rid of the trailing "\0"
1175 if ($state eq 'meta' && /^:(\d{6})\s(\d{6})\s
1176 $sha1\s($sha1)\s([MTCRAD])\d*$/xo) {
1177 push @mods, { mode_a => $1, mode_b => $2,
1178 sha1_b => $3, chg => $4 };
1179 if ($4 =~ /^(?:C|R)$/) {
1180 $state = 'file_a';
1181 } else {
1182 $state = 'file_b';
1183 }
1184 } elsif ($state eq 'file_a') {
1185 my $x = $mods[$#mods] or croak "Empty array\n";
1186 if ($x->{chg} !~ /^(?:C|R)$/) {
1187 croak "Error parsing $_, $x->{chg}\n";
1188 }
1189 $x->{file_a} = $_;
1190 $state = 'file_b';
1191 } elsif ($state eq 'file_b') {
1192 my $x = $mods[$#mods] or croak "Empty array\n";
1193 if (exists $x->{file_a} && $x->{chg} !~ /^(?:C|R)$/) {
1194 croak "Error parsing $_, $x->{chg}\n";
1195 }
1196 if (!exists $x->{file_a} && $x->{chg} =~ /^(?:C|R)$/) {
1197 croak "Error parsing $_, $x->{chg}\n";
1198 }
1199 $x->{file_b} = $_;
1200 $state = 'meta';
1201 } else {
1202 croak "Error parsing $_\n";
1203 }
1204 }
1205 command_close_pipe($diff_fh, $ctx);
1206 return \@mods;
1207}
1208sub libsvn_checkout_tree {
1210 my ($from, $treeish, $ed) = @_;
1211 my $mods = get_diff($from, $treeish);
1212 return $mods unless (scalar @$mods);
1213 my %o = ( D => 1, R => 0, C => -1, A => 3, M => 3, T => 3 );
1214 foreach my $m (sort { $o{$a->{chg}} <=> $o{$b->{chg}} } @$mods) {
1215 my $f = $m->{chg};
1216 if (defined $o{$f}) {
1217 $ed->$f($m, $_q);
1218 } else {
1219 croak "Invalid change type: $f\n";
1220 }
1221 }
1222 $ed->rmdirs($_q) if $_rmdir;
1223 return $mods;
1224}
1225sub get_commit_message {
1227 my ($commit, $commit_msg) = (@_);
1228 my %log_msg = ( msg => '' );
1229 open my $msg, '>', $commit_msg or croak $!;
1230 my $type = command_oneline(qw/cat-file -t/, $commit);
1232 if ($type eq 'commit' || $type eq 'tag') {
1233 my ($msg_fh, $ctx) = command_output_pipe('cat-file',
1234 $type, $commit);
1235 my $in_msg = 0;
1236 while (<$msg_fh>) {
1237 if (!$in_msg) {
1238 $in_msg = 1 if (/^\s*$/);
1239 } elsif (/^git-svn-id: /) {
1240 # skip this, we regenerate the correct one
1241 # on re-fetch anyways
1242 } else {
1243 print $msg $_ or croak $!;
1244 }
1245 }
1246 command_close_pipe($msg_fh, $ctx);
1247 }
1248 close $msg or croak $!;
1249 if ($_edit || ($type eq 'tree')) {
1251 my $editor = $ENV{VISUAL} || $ENV{EDITOR} || 'vi';
1252 system($editor, $commit_msg);
1253 }
1254 # file_to_s removes all trailing newlines, so just use chomp() here:
1256 open $msg, '<', $commit_msg or croak $!;
1257 { local $/; chomp($log_msg{msg} = <$msg>); }
1258 close $msg or croak $!;
1259 return \%log_msg;
1261}
1262sub set_svn_commit_env {
1264 if (defined $LC_ALL) {
1265 $ENV{LC_ALL} = $LC_ALL;
1266 } else {
1267 delete $ENV{LC_ALL};
1268 }
1269}
1270sub rev_list_raw {
1272 my ($fh, $c) = command_output_pipe(qw/rev-list --pretty=raw/, @_);
1273 return { fh => $fh, ctx => $c, t => { } };
1274}
1275sub next_rev_list_entry {
1277 my $rl = shift;
1278 my $fh = $rl->{fh};
1279 my $x = $rl->{t};
1280 while (<$fh>) {
1281 if (/^commit ($sha1)$/o) {
1282 if ($x->{c}) {
1283 $rl->{t} = { c => $1 };
1284 return $x;
1285 } else {
1286 $x->{c} = $1;
1287 }
1288 } elsif (/^parent ($sha1)$/o) {
1289 $x->{p}->{$1} = 1;
1290 } elsif (s/^ //) {
1291 $x->{m} ||= '';
1292 $x->{m} .= $_;
1293 }
1294 }
1295 command_close_pipe($fh, $rl->{ctx});
1296 return ($x != $rl->{t}) ? $x : undef;
1297}
1298sub s_to_file {
1300 my ($str, $file, $mode) = @_;
1301 open my $fd,'>',$file or croak $!;
1302 print $fd $str,"\n" or croak $!;
1303 close $fd or croak $!;
1304 chmod ($mode &~ umask, $file) if (defined $mode);
1305}
1306sub file_to_s {
1308 my $file = shift;
1309 open my $fd,'<',$file or croak "$!: file: $file\n";
1310 local $/;
1311 my $ret = <$fd>;
1312 close $fd or croak $!;
1313 $ret =~ s/\s*$//s;
1314 return $ret;
1315}
1316sub assert_revision_unknown {
1318 my $r = shift;
1319 if (my $c = revdb_get($REVDB, $r)) {
1320 croak "$r = $c already exists! Why are we refetching it?";
1321 }
1322}
1323sub git_commit {
1325 my ($log_msg, @parents) = @_;
1326 assert_revision_unknown($log_msg->{revision});
1327 map_tree_joins() if (@_branch_from && !%tree_map);
1328 my (@tmp_parents, @exec_parents, %seen_parent);
1330 if (my $lparents = $log_msg->{parents}) {
1331 @tmp_parents = @$lparents
1332 }
1333 # commit parents can be conditionally bound to a particular
1334 # svn revision via: "svn_revno=commit_sha1", filter them out here:
1335 foreach my $p (@parents) {
1336 next unless defined $p;
1337 if ($p =~ /^(\d+)=($sha1_short)$/o) {
1338 if ($1 == $log_msg->{revision}) {
1339 push @tmp_parents, $2;
1340 }
1341 } else {
1342 push @tmp_parents, $p if $p =~ /$sha1_short/o;
1343 }
1344 }
1345 my $tree = $log_msg->{tree};
1346 if (!defined $tree) {
1347 my $index = set_index($GIT_SVN_INDEX);
1348 $tree = command_oneline('write-tree');
1349 croak $? if $?;
1350 restore_index($index);
1351 }
1352 # just in case we clobber the existing ref, we still want that ref
1353 # as our parent:
1354 if (my $cur = verify_ref("refs/remotes/$GIT_SVN^0")) {
1355 chomp $cur;
1356 push @tmp_parents, $cur;
1357 }
1358 if (exists $tree_map{$tree}) {
1360 foreach my $p (@{$tree_map{$tree}}) {
1361 my $skip;
1362 foreach (@tmp_parents) {
1363 # see if a common parent is found
1364 my $mb = eval { command('merge-base', $_, $p) };
1365 next if ($@ || $?);
1366 $skip = 1;
1367 last;
1368 }
1369 next if $skip;
1370 my ($url_p, $r_p, $uuid_p) = cmt_metadata($p);
1371 next if (($SVN->uuid eq $uuid_p) &&
1372 ($log_msg->{revision} > $r_p));
1373 next if (defined $url_p && defined $SVN_URL &&
1374 ($SVN->uuid eq $uuid_p) &&
1375 ($url_p eq $SVN_URL));
1376 push @tmp_parents, $p;
1377 }
1378 }
1379 foreach (@tmp_parents) {
1380 next if $seen_parent{$_};
1381 $seen_parent{$_} = 1;
1382 push @exec_parents, $_;
1383 # MAXPARENT is defined to 16 in commit-tree.c:
1384 last if @exec_parents > 16;
1385 }
1386 set_commit_env($log_msg);
1388 my @exec = ('git-commit-tree', $tree);
1389 push @exec, '-p', $_ foreach @exec_parents;
1390 defined(my $pid = open3(my $msg_fh, my $out_fh, '>&STDERR', @exec))
1391 or croak $!;
1392 print $msg_fh $log_msg->{msg} or croak $!;
1393 unless ($_no_metadata) {
1394 print $msg_fh "\ngit-svn-id: $SVN_URL\@$log_msg->{revision} ",
1395 $SVN->uuid,"\n" or croak $!;
1396 }
1397 $msg_fh->flush == 0 or croak $!;
1398 close $msg_fh or croak $!;
1399 chomp(my $commit = do { local $/; <$out_fh> });
1400 close $out_fh or croak $!;
1401 waitpid $pid, 0;
1402 croak $? if $?;
1403 if ($commit !~ /^$sha1$/o) {
1404 die "Failed to commit, invalid sha1: $commit\n";
1405 }
1406 command_noisy('update-ref',"refs/remotes/$GIT_SVN",$commit);
1407 revdb_set($REVDB, $log_msg->{revision}, $commit);
1408 # this output is read via pipe, do not change:
1410 print "r$log_msg->{revision} = $commit\n";
1411 return $commit;
1412}
1413sub check_repack {
1415 if ($_repack && (--$_repack_nr == 0)) {
1416 $_repack_nr = $_repack;
1417 # repack doesn't use any arguments with spaces in them, does it?
1418 command_noisy('repack', split(/\s+/, $_repack_flags));
1419 }
1420}
1421sub set_commit_env {
1423 my ($log_msg) = @_;
1424 my $author = $log_msg->{author};
1425 if (!defined $author || length $author == 0) {
1426 $author = '(no author)';
1427 }
1428 my ($name,$email) = defined $users{$author} ? @{$users{$author}}
1429 : ($author,$author . '@' . $SVN->uuid);
1430 $ENV{GIT_AUTHOR_NAME} = $ENV{GIT_COMMITTER_NAME} = $name;
1431 $ENV{GIT_AUTHOR_EMAIL} = $ENV{GIT_COMMITTER_EMAIL} = $email;
1432 $ENV{GIT_AUTHOR_DATE} = $ENV{GIT_COMMITTER_DATE} = $log_msg->{date};
1433}
1434sub check_upgrade_needed {
1436 if (!-r $REVDB) {
1437 -d $GIT_SVN_DIR or mkpath([$GIT_SVN_DIR]);
1438 open my $fh, '>>',$REVDB or croak $!;
1439 close $fh;
1440 }
1441 return unless eval {
1442 command([qw/rev-parse --verify/,"$GIT_SVN-HEAD^0"],
1443 {STDERR => 0});
1444 };
1445 my $head = eval { command('rev-parse',"refs/remotes/$GIT_SVN") };
1446 if ($@ || !$head) {
1447 print STDERR "Please run: $0 rebuild --upgrade\n";
1448 exit 1;
1449 }
1450}
1451# fills %tree_map with a reverse mapping of trees to commits. Useful
1453# for finding parents to commit on.
1454sub map_tree_joins {
1455 my %seen;
1456 foreach my $br (@_branch_from) {
1457 my $pipe = command_output_pipe(qw/rev-list
1458 --topo-order --pretty=raw/, $br);
1459 while (<$pipe>) {
1460 if (/^commit ($sha1)$/o) {
1461 my $commit = $1;
1462 # if we've seen a commit,
1464 # we've seen its parents
1465 last if $seen{$commit};
1466 my ($tree) = (<$pipe> =~ /^tree ($sha1)$/o);
1467 unless (defined $tree) {
1468 die "Failed to parse commit $commit\n";
1469 }
1470 push @{$tree_map{$tree}}, $commit;
1471 $seen{$commit} = 1;
1472 }
1473 }
1474 close $pipe;
1475 }
1476}
1477sub load_all_refs {
1479 if (@_branch_from) {
1480 print STDERR '--branch|-b parameters are ignored when ',
1481 "--branch-all-refs|-B is passed\n";
1482 }
1483 # don't worry about rev-list on non-commit objects/tags,
1485 # it shouldn't blow up if a ref is a blob or tree...
1486 @_branch_from = command(qw/rev-parse --symbolic --all/);
1487}
1488# '<svn username> = real-name <email address>' mapping based on git-svnimport:
1490sub load_authors {
1491 open my $authors, '<', $_authors or die "Can't open $_authors $!\n";
1492 while (<$authors>) {
1493 chomp;
1494 next unless /^(\S+?|\(no author\))\s*=\s*(.+?)\s*<(.+)>\s*$/;
1495 my ($user, $name, $email) = ($1, $2, $3);
1496 $users{$user} = [$name, $email];
1497 }
1498 close $authors or croak $!;
1499}
1500sub rload_authors {
1502 open my $authors, '<', $_authors or die "Can't open $_authors $!\n";
1503 while (<$authors>) {
1504 chomp;
1505 next unless /^(\S+?)\s*=\s*(.+?)\s*<(.+)>\s*$/;
1506 my ($user, $name, $email) = ($1, $2, $3);
1507 $rusers{"$name <$email>"} = $user;
1508 }
1509 close $authors or croak $!;
1510}
1511sub git_svn_each {
1513 my $sub = shift;
1514 foreach (command(qw/rev-parse --symbolic --all/)) {
1515 next unless s#^refs/remotes/##;
1516 chomp $_;
1517 next unless -f "$GIT_DIR/svn/$_/info/url";
1518 &$sub($_);
1519 }
1520}
1521sub migrate_revdb {
1523 git_svn_each(sub {
1524 my $id = shift;
1525 defined(my $pid = fork) or croak $!;
1526 if (!$pid) {
1527 $GIT_SVN = $ENV{GIT_SVN_ID} = $id;
1528 init_vars();
1529 exit 0 if -r $REVDB;
1530 print "Upgrading svn => git mapping...\n";
1531 -d $GIT_SVN_DIR or mkpath([$GIT_SVN_DIR]);
1532 open my $fh, '>>',$REVDB or croak $!;
1533 close $fh;
1534 rebuild();
1535 print "Done upgrading. You may now delete the ",
1536 "deprecated $GIT_SVN_DIR/revs directory\n";
1537 exit 0;
1538 }
1539 waitpid $pid, 0;
1540 croak $? if $?;
1541 });
1542}
1543sub migration_check {
1545 migrate_revdb() unless (-e $REVDB);
1546 return if (-d "$GIT_DIR/svn" || !-d $GIT_DIR);
1547 print "Upgrading repository...\n";
1548 unless (-d "$GIT_DIR/svn") {
1549 mkdir "$GIT_DIR/svn" or croak $!;
1550 }
1551 print "Data from a previous version of git-svn exists, but\n\t",
1552 "$GIT_SVN_DIR\n\t(required for this version ",
1553 "($VERSION) of git-svn) does not.\n";
1554 foreach my $x (command(qw/rev-parse --symbolic --all/)) {
1556 next unless $x =~ s#^refs/remotes/##;
1557 chomp $x;
1558 next unless -f "$GIT_DIR/$x/info/url";
1559 my $u = eval { file_to_s("$GIT_DIR/$x/info/url") };
1560 next unless $u;
1561 my $dn = dirname("$GIT_DIR/svn/$x");
1562 mkpath([$dn]) unless -d $dn;
1563 rename "$GIT_DIR/$x", "$GIT_DIR/svn/$x" or croak "$!: $x";
1564 }
1565 migrate_revdb() if (-d $GIT_SVN_DIR && !-w $REVDB);
1566 print "Done upgrading.\n";
1567}
1568sub find_rev_before {
1570 my ($r, $id, $eq_ok) = @_;
1571 my $f = "$GIT_DIR/svn/$id/.rev_db";
1572 return (undef,undef) unless -r $f;
1573 --$r unless $eq_ok;
1574 while ($r > 0) {
1575 if (my $c = revdb_get($f, $r)) {
1576 return ($r, $c);
1577 }
1578 --$r;
1579 }
1580 return (undef, undef);
1581}
1582sub init_vars {
1584 $GIT_SVN ||= $ENV{GIT_SVN_ID} || 'git-svn';
1585 $GIT_SVN_DIR = "$GIT_DIR/svn/$GIT_SVN";
1586 $REVDB = "$GIT_SVN_DIR/.rev_db";
1587 $GIT_SVN_INDEX = "$GIT_SVN_DIR/index";
1588 $SVN_URL = undef;
1589 %tree_map = ();
1590}
1591# convert GetOpt::Long specs for use by git-config
1593sub read_repo_config {
1594 return unless -d $GIT_DIR;
1595 my $opts = shift;
1596 foreach my $o (keys %$opts) {
1597 my $v = $opts->{$o};
1598 my ($key) = ($o =~ /^([a-z\-]+)/);
1599 $key =~ s/-//g;
1600 my $arg = 'git-config';
1601 $arg .= ' --int' if ($o =~ /[:=]i$/);
1602 $arg .= ' --bool' if ($o !~ /[:=][sfi]$/);
1603 if (ref $v eq 'ARRAY') {
1604 chomp(my @tmp = `$arg --get-all svn.$key`);
1605 @$v = @tmp if @tmp;
1606 } else {
1607 chomp(my $tmp = `$arg --get svn.$key`);
1608 if ($tmp && !($arg =~ / --bool/ && $tmp eq 'false')) {
1609 $$v = $tmp;
1610 }
1611 }
1612 }
1613}
1614sub set_default_vals {
1616 if (defined $_repack) {
1617 $_repack = 1000 if ($_repack <= 0);
1618 $_repack_nr = $_repack;
1619 $_repack_flags ||= '-d';
1620 }
1621}
1622sub read_grafts {
1624 my $gr_file = shift;
1625 my ($grafts, $comments) = ({}, {});
1626 if (open my $fh, '<', $gr_file) {
1627 my @tmp;
1628 while (<$fh>) {
1629 if (/^($sha1)\s+/) {
1630 my $c = $1;
1631 if (@tmp) {
1632 @{$comments->{$c}} = @tmp;
1633 @tmp = ();
1634 }
1635 foreach my $p (split /\s+/, $_) {
1636 $grafts->{$c}->{$p} = 1;
1637 }
1638 } else {
1639 push @tmp, $_;
1640 }
1641 }
1642 close $fh or croak $!;
1643 @{$comments->{'END'}} = @tmp if @tmp;
1644 }
1645 return ($grafts, $comments);
1646}
1647sub write_grafts {
1649 my ($grafts, $comments, $gr_file) = @_;
1650 open my $fh, '>', $gr_file or croak $!;
1652 foreach my $c (sort keys %$grafts) {
1653 if ($comments->{$c}) {
1654 print $fh $_ foreach @{$comments->{$c}};
1655 }
1656 my $p = $grafts->{$c};
1657 my %x; # real parents
1658 delete $p->{$c}; # commits are not self-reproducing...
1659 my $ch = command_output_pipe(qw/cat-file commit/, $c);
1660 while (<$ch>) {
1661 if (/^parent ($sha1)/) {
1662 $x{$1} = $p->{$1} = 1;
1663 } else {
1664 last unless /^\S/;
1665 }
1666 }
1667 close $ch; # breaking the pipe
1668 # if real parents are the only ones in the grafts, drop it
1670 next if join(' ',sort keys %$p) eq join(' ',sort keys %x);
1671 my (@ip, @jp, $mb);
1673 my %del = %x;
1674 @ip = @jp = keys %$p;
1675 foreach my $i (@ip) {
1676 next if $del{$i} || $p->{$i} == 2;
1677 foreach my $j (@jp) {
1678 next if $i eq $j || $del{$j} || $p->{$j} == 2;
1679 $mb = eval { command('merge-base', $i, $j) };
1680 next unless $mb;
1681 chomp $mb;
1682 next if $x{$mb};
1683 if ($mb eq $j) {
1684 delete $p->{$i};
1685 $del{$i} = 1;
1686 } elsif ($mb eq $i) {
1687 delete $p->{$j};
1688 $del{$j} = 1;
1689 }
1690 }
1691 }
1692 # if real parents are the only ones in the grafts, drop it
1694 next if join(' ',sort keys %$p) eq join(' ',sort keys %x);
1695 print $fh $c, ' ', join(' ', sort keys %$p),"\n";
1697 }
1698 if ($comments->{'END'}) {
1699 print $fh $_ foreach @{$comments->{'END'}};
1700 }
1701 close $fh or croak $!;
1702}
1703sub read_url_paths_all {
1705 my ($l_map, $pfx, $p) = @_;
1706 my @dir;
1707 foreach (<$p/*>) {
1708 if (-r "$_/info/url") {
1709 $pfx .= '/' if $pfx && $pfx !~ m!/$!;
1710 my $id = $pfx . basename $_;
1711 my $url = file_to_s("$_/info/url");
1712 my ($u, $p) = repo_path_split($url);
1713 $l_map->{$u}->{$p} = $id;
1714 } elsif (-d $_) {
1715 push @dir, $_;
1716 }
1717 }
1718 foreach (@dir) {
1719 my $x = $_;
1720 $x =~ s!^\Q$GIT_DIR\E/svn/!!o;
1721 read_url_paths_all($l_map, $x, $_);
1722 }
1723}
1724# this one only gets ids that have been imported, not new ones
1726sub read_url_paths {
1727 my $l_map = {};
1728 git_svn_each(sub { my $x = shift;
1729 my $url = file_to_s("$GIT_DIR/svn/$x/info/url");
1730 my ($u, $p) = repo_path_split($url);
1731 $l_map->{$u}->{$p} = $x;
1732 });
1733 return $l_map;
1734}
1735sub extract_metadata {
1737 my $id = shift or return (undef, undef, undef);
1738 my ($url, $rev, $uuid) = ($id =~ /^git-svn-id:\s(\S+?)\@(\d+)
1739 \s([a-f\d\-]+)$/x);
1740 if (!defined $rev || !$uuid || !$url) {
1741 # some of the original repositories I made had
1742 # identifiers like this:
1743 ($rev, $uuid) = ($id =~/^git-svn-id:\s(\d+)\@([a-f\d\-]+)/);
1744 }
1745 return ($url, $rev, $uuid);
1746}
1747sub cmt_metadata {
1749 return extract_metadata((grep(/^git-svn-id: /,
1750 command(qw/cat-file commit/, shift)))[-1]);
1751}
1752sub get_commit_time {
1754 my $cmt = shift;
1755 my $fh = command_output_pipe(qw/rev-list --pretty=raw -n1/, $cmt);
1756 while (<$fh>) {
1757 /^committer\s(?:.+) (\d+) ([\-\+]?\d+)$/ or next;
1758 my ($s, $tz) = ($1, $2);
1759 if ($tz =~ s/^\+//) {
1760 $s += tz_to_s_offset($tz);
1761 } elsif ($tz =~ s/^\-//) {
1762 $s -= tz_to_s_offset($tz);
1763 }
1764 close $fh;
1765 return $s;
1766 }
1767 die "Can't get commit time for commit: $cmt\n";
1768}
1769sub tz_to_s_offset {
1771 my ($tz) = @_;
1772 $tz =~ s/(\d\d)$//;
1773 return ($1 * 60) + ($tz * 3600);
1774}
1775# adapted from pager.c
1777sub config_pager {
1778 $_pager ||= $ENV{GIT_PAGER} || $ENV{PAGER};
1779 if (!defined $_pager) {
1780 $_pager = 'less';
1781 } elsif (length $_pager == 0 || $_pager eq 'cat') {
1782 $_pager = undef;
1783 }
1784}
1785sub run_pager {
1787 return unless -t *STDOUT;
1788 pipe my $rfd, my $wfd or return;
1789 defined(my $pid = fork) or croak $!;
1790 if (!$pid) {
1791 open STDOUT, '>&', $wfd or croak $!;
1792 return;
1793 }
1794 open STDIN, '<&', $rfd or croak $!;
1795 $ENV{LESS} ||= 'FRSX';
1796 exec $_pager or croak "Can't run pager: $! ($_pager)\n";
1797}
1798sub get_author_info {
1800 my ($dest, $author, $t, $tz) = @_;
1801 $author =~ s/(?:^\s*|\s*$)//g;
1802 $dest->{a_raw} = $author;
1803 my $_a;
1804 if ($_authors) {
1805 $_a = $rusers{$author} || undef;
1806 }
1807 if (!$_a) {
1808 ($_a) = ($author =~ /<([^>]+)\@[^>]+>$/);
1809 }
1810 $dest->{t} = $t;
1811 $dest->{tz} = $tz;
1812 $dest->{a} = $_a;
1813 # Date::Parse isn't in the standard Perl distro :(
1814 if ($tz =~ s/^\+//) {
1815 $t += tz_to_s_offset($tz);
1816 } elsif ($tz =~ s/^\-//) {
1817 $t -= tz_to_s_offset($tz);
1818 }
1819 $dest->{t_utc} = $t;
1820}
1821sub process_commit {
1823 my ($c, $r_min, $r_max, $defer) = @_;
1824 if (defined $r_min && defined $r_max) {
1825 if ($r_min == $c->{r} && $r_min == $r_max) {
1826 show_commit($c);
1827 return 0;
1828 }
1829 return 1 if $r_min == $r_max;
1830 if ($r_min < $r_max) {
1831 # we need to reverse the print order
1832 return 0 if (defined $_limit && --$_limit < 0);
1833 push @$defer, $c;
1834 return 1;
1835 }
1836 if ($r_min != $r_max) {
1837 return 1 if ($r_min < $c->{r});
1838 return 1 if ($r_max > $c->{r});
1839 }
1840 }
1841 return 0 if (defined $_limit && --$_limit < 0);
1842 show_commit($c);
1843 return 1;
1844}
1845sub show_commit {
1847 my $c = shift;
1848 if ($_oneline) {
1849 my $x = "\n";
1850 if (my $l = $c->{l}) {
1851 while ($l->[0] =~ /^\s*$/) { shift @$l }
1852 $x = $l->[0];
1853 }
1854 $_l_fmt ||= 'A' . length($c->{r});
1855 print 'r',pack($_l_fmt, $c->{r}),' | ';
1856 print "$c->{c} | " if $_show_commit;
1857 print $x;
1858 } else {
1859 show_commit_normal($c);
1860 }
1861}
1862sub show_commit_changed_paths {
1864 my ($c) = @_;
1865 return unless $c->{changed};
1866 print "Changed paths:\n", @{$c->{changed}};
1867}
1868sub show_commit_normal {
1870 my ($c) = @_;
1871 print '-' x72, "\nr$c->{r} | ";
1872 print "$c->{c} | " if $_show_commit;
1873 print "$c->{a} | ", strftime("%Y-%m-%d %H:%M:%S %z (%a, %d %b %Y)",
1874 localtime($c->{t_utc})), ' | ';
1875 my $nr_line = 0;
1876 if (my $l = $c->{l}) {
1878 while ($l->[$#$l] eq "\n" && $#$l > 0
1879 && $l->[($#$l - 1)] eq "\n") {
1880 pop @$l;
1881 }
1882 $nr_line = scalar @$l;
1883 if (!$nr_line) {
1884 print "1 line\n\n\n";
1885 } else {
1886 if ($nr_line == 1) {
1887 $nr_line = '1 line';
1888 } else {
1889 $nr_line .= ' lines';
1890 }
1891 print $nr_line, "\n";
1892 show_commit_changed_paths($c);
1893 print "\n";
1894 print $_ foreach @$l;
1895 }
1896 } else {
1897 print "1 line\n";
1898 show_commit_changed_paths($c);
1899 print "\n";
1900 }
1902 foreach my $x (qw/raw diff/) {
1903 if ($c->{$x}) {
1904 print "\n";
1905 print $_ foreach @{$c->{$x}}
1906 }
1907 }
1908}
1909package Git::SVN;
1911use strict;
1912use warnings;
1913use vars qw/$default/;
1914use Carp qw/croak/;
1915use File::Path qw/mkpath/;
1916use IPC::Open3;
1917# properties that we do not log:
1919my %SKIP_PROP;
1920BEGIN {
1921 %SKIP_PROP = map { $_ => 1 } qw/svn:wc:ra_dav:version-url
1922 svn:special svn:executable
1923 svn:entry:committed-rev
1924 svn:entry:last-author
1925 svn:entry:uuid
1926 svn:entry:committed-date/;
1927}
1928sub init {
1930 my ($class, $id, $url) = @_;
1931 my $self = _new($class, $id);
1932 mkpath(["$self->{dir}/info"]);
1933 if (defined $url) {
1934 $url =~ s!/+$!!; # strip trailing slash
1935 s_to_file($url, "$self->{dir}/info/url");
1936 }
1937 $self->{url} = $url;
1938 open my $fh, '>>', $self->{db_path} or croak $!;
1939 close $fh or croak $!;
1940 $self;
1941}
1942sub new {
1944 my ($class, $id) = @_;
1945 my $self = _new($class, $id);
1946 $self->{url} = file_to_s("$self->{dir}/info/url");
1947 $self;
1948}
1949sub refname { "refs/remotes/$_[0]->{id}" }
1951sub ra {
1953 my ($self) = shift;
1954 $self->{ra} ||= Git::SVN::Ra->new($self->{url});
1955}
1956sub copy_remote_ref {
1958 my ($self) = @_;
1959 my $origin = $::_cp_remote ? $::_cp_remote : 'origin';
1960 my $ref = $self->refname;
1961 if (command('ls-remote', $origin, $ref)) {
1962 command_noisy('fetch', $origin, "$ref:$ref");
1963 } elsif ($::_cp_remote && !$::_upgrade) {
1964 die "Unable to find remote reference: $ref on $origin\n";
1965 }
1966}
1967sub traverse_ignore {
1969 my ($self, $fh, $path, $r) = @_;
1970 $path =~ s#^/+##g;
1971 my ($dirent, undef, $props) = $self->ra->get_dir($path, $r);
1972 my $p = $path;
1973 $p =~ s#^\Q$self->{ra}->{svn_path}\E/##;
1974 print $fh length $p ? "\n# $p\n" : "\n# /\n";
1975 if (my $s = $props->{'svn:ignore'}) {
1976 $s =~ s/[\r\n]+/\n/g;
1977 chomp $s;
1978 if (length $p == 0) {
1979 $s =~ s#\n#\n/$p#g;
1980 print $fh "/$s\n";
1981 } else {
1982 $s =~ s#\n#\n/$p/#g;
1983 print $fh "/$p/$s\n";
1984 }
1985 }
1986 foreach (sort keys %$dirent) {
1987 next if $dirent->{$_}->kind != $SVN::Node::dir;
1988 $self->traverse_ignore($fh, "$path/$_", $r);
1989 }
1990}
1991# returns the newest SVN revision number and newest commit SHA1
1993sub last_rev_commit {
1994 my ($self) = @_;
1995 if (defined $self->{last_rev} && defined $self->{last_commit}) {
1996 return ($self->{last_rev}, $self->{last_commit});
1997 }
1998 my $c = verify_ref($self->refname.'^0');
1999 if (defined $c && length $c) {
2000 my $rev = (cmt_metadata($c))[1];
2001 if (defined $rev) {
2002 ($self->{last_rev}, $self->{last_commit}) = ($rev, $c);
2003 return ($rev, $c);
2004 }
2005 }
2006 my $offset = -41; # from tail
2007 my $rl;
2008 open my $fh, '<', $self->{db_path} or
2009 croak "$self->{db_path} not readable: $!\n";
2010 seek $fh, $offset, 2;
2011 $rl = readline $fh;
2012 defined $rl or return (undef, undef);
2013 chomp $rl;
2014 while ($c ne $rl && tell $fh != 0) {
2015 $offset -= 41;
2016 seek $fh, $offset, 2;
2017 $rl = readline $fh;
2018 defined $rl or return (undef, undef);
2019 chomp $rl;
2020 }
2021 my $rev = tell $fh;
2022 croak $! if ($rev < 0);
2023 $rev = ($rev - 41) / 41;
2024 close $fh or croak $!;
2025 ($self->{last_rev}, $self->{last_commit}) = ($rev, $c);
2026 return ($rev, $c);
2027}
2028sub parse_revision {
2030 my ($self, $base) = @_;
2031 my $head = $self->ra->get_latest_revnum;
2032 if (!defined $::_revision || $::_revision eq 'BASE:HEAD') {
2033 return ($base + 1, $head) if (defined $base);
2034 return (0, $head);
2035 }
2036 return ($1, $2) if ($::_revision =~ /^(\d+):(\d+)$/);
2037 return ($::_revision, $::_revision) if ($::_revision =~ /^\d+$/);
2038 if ($::_revision =~ /^BASE:(\d+)$/) {
2039 return ($base + 1, $1) if (defined $base);
2040 return (0, $head);
2041 }
2042 return ($1, $head) if ($::_revision =~ /^(\d+):HEAD$/);
2043 die "revision argument: $::_revision not understood by git-svn\n",
2044 "Try using the command-line svn client instead\n";
2045}
2046sub tmp_index_do {
2048 my ($self, $sub) = @_;
2049 my $old_index = $ENV{GIT_INDEX_FILE};
2050 $ENV{GIT_INDEX_FILE} = $self->{index};
2051 my @ret = &$sub;
2052 if ($old_index) {
2053 $ENV{GIT_INDEX_FILE} = $old_index;
2054 } else {
2055 delete $ENV{GIT_INDEX_FILE};
2056 }
2057 wantarray ? @ret : $ret[0];
2058}
2059sub assert_index_clean {
2061 my ($self, $treeish) = @_;
2062 $self->tmp_index_do(sub {
2064 command_noisy('read-tree', $treeish) unless -e $self->{index};
2065 my $x = command_oneline('write-tree');
2066 my ($y) = (command(qw/cat-file commit/, $treeish) =~
2067 /^tree ($::sha1)/mo);
2068 if ($y ne $x) {
2069 unlink $self->{index} or croak $!;
2070 command_noisy('read-tree', $treeish);
2071 }
2072 $x = command_oneline('write-tree');
2073 if ($y ne $x) {
2074 ::fatal "trees ($treeish) $y != $x\n",
2075 "Something is seriously wrong...\n";
2076 }
2077 });
2078}
2079sub get_commit_parents {
2081 my ($self, $log_msg, @parents) = @_;
2082 my (%seen, @ret, @tmp);
2083 # commit parents can be conditionally bound to a particular
2084 # svn revision via: "svn_revno=commit_sha1", filter them out here:
2085 foreach my $p (@parents) {
2086 next unless defined $p;
2087 if ($p =~ /^(\d+)=($::sha1_short)$/o) {
2088 push @tmp, $2 if $1 == $log_msg->{revision};
2089 } else {
2090 push @tmp, $p if $p =~ /^$::sha1_short$/o;
2091 }
2092 }
2093 if (my $cur = verify_ref($self->refname.'^0')) {
2094 push @tmp, $cur;
2095 }
2096 push @tmp, $_ foreach (@{$log_msg->{parents}}, @tmp);
2097 while (my $p = shift @tmp) {
2098 next if $seen{$p};
2099 $seen{$p} = 1;
2100 push @ret, $p;
2101 # MAXPARENT is defined to 16 in commit-tree.c:
2102 last if @ret >= 16;
2103 }
2104 if (@tmp) {
2105 die "r$log_msg->{revision}: No room for parents:\n\t",
2106 join("\n\t", @tmp), "\n";
2107 }
2108 @ret;
2109}
2110sub check_upgrade_needed {
2112 my ($self) = @_;
2113 if (!-r $self->{db_path}) {
2114 -d $self->{dir} or mkpath([$self->{dir}]);
2115 open my $fh, '>>', $self->{db_path} or croak $!;
2116 close $fh;
2117 }
2118 return unless verify_ref($self->{id}.'-HEAD^0');
2119 my $head = verify_ref($self->refname.'^0');
2120 if ($@ || !$head) {
2121 fatal("Please run: $0 rebuild --upgrade\n");
2122 }
2123}
2124sub do_git_commit {
2126 my ($self, $log_msg, @parents) = @_;
2127 if (my $c = $self->rev_db_get($log_msg->{revision})) {
2128 croak "$log_msg->{revision} = $c already exists! ",
2129 "Why are we refetching it?\n";
2130 }
2131 my ($name, $email) = author_name_email($log_msg->{author}, $self->ra);
2132 $ENV{GIT_AUTHOR_NAME} = $ENV{GIT_COMMITTER_NAME} = $name;
2133 $ENV{GIT_AUTHOR_EMAIL} = $ENV{GIT_COMMITTER_EMAIL} = $email;
2134 $ENV{GIT_AUTHOR_DATE} = $ENV{GIT_COMMITTER_DATE} = $log_msg->{date};
2135 my $tree = $log_msg->{tree};
2137 if (!defined $tree) {
2138 $tree = $self->tmp_index_do(sub {
2139 command_oneline('write-tree') });
2140 }
2141 die "Tree is not a valid sha1: $tree\n" if $tree !~ /^$::sha1$/o;
2142 my @exec = ('git-commit-tree', $tree);
2144 foreach ($self->get_commit_parents($log_msg, @parents)) {
2145 push @exec, '-p', $_;
2146 }
2147 defined(my $pid = open3(my $msg_fh, my $out_fh, '>&STDERR', @exec))
2148 or croak $!;
2149 print $msg_fh $log_msg->{log} or croak $!;
2150 print $msg_fh "\ngit-svn-id: $self->{ra}->{url}\@$log_msg->{revision}",
2151 " ", $self->ra->uuid,"\n" or croak $!;
2152 $msg_fh->flush == 0 or croak $!;
2153 close $msg_fh or croak $!;
2154 chomp(my $commit = do { local $/; <$out_fh> });
2155 close $out_fh or croak $!;
2156 waitpid $pid, 0;
2157 croak $? if $?;
2158 if ($commit !~ /^$::sha1$/o) {
2159 die "Failed to commit, invalid sha1: $commit\n";
2160 }
2161 command_noisy('update-ref',$self->refname, $commit);
2163 $self->rev_db_set($log_msg->{revision}, $commit);
2164 $self->{last_rev} = $log_msg->{revision};
2166 $self->{last_commit} = $commit;
2167 print "r$log_msg->{revision} = $commit\n";
2168 return $commit;
2169}
2170sub do_fetch {
2172 my ($self, $paths, $rev) = @_; #, $author, $date, $msg) = @_;
2173 my $ed = SVN::Git::Fetcher->new($self);
2174 my ($last_rev, @parents);
2175 if ($self->{last_commit}) {
2176 $last_rev = $self->{last_rev};
2177 $ed->{c} = $self->{last_commit};
2178 @parents = ($self->{last_commit});
2179 } else {
2180 $last_rev = $rev;
2181 }
2182 unless ($self->ra->do_update($last_rev, $rev, '', 1, $ed)) {
2183 die "SVN connection failed somewhere...\n";
2184 }
2185 $self->make_log_entry($rev, \@parents, $ed);
2186}
2187sub write_untracked {
2189 my ($self, $rev, $fh, $untracked) = @_;
2190 my $h;
2191 print $fh "r$rev\n" or croak $!;
2192 $h = $untracked->{empty};
2193 foreach (sort keys %$h) {
2194 my $act = $h->{$_} ? '+empty_dir' : '-empty_dir';
2195 print $fh " $act: ", uri_encode($_), "\n" or croak $!;
2196 warn "W: $act: $_\n";
2197 }
2198 foreach my $t (qw/dir_prop file_prop/) {
2199 $h = $untracked->{$t} or next;
2200 foreach my $path (sort keys %$h) {
2201 my $ppath = $path eq '' ? '.' : $path;
2202 foreach my $prop (sort keys %{$h->{$path}}) {
2203 next if $SKIP{$prop};
2204 my $v = $h->{$path}->{$prop};
2205 if (defined $v) {
2206 print $fh " +$t: ",
2207 uri_encode($ppath), ' ',
2208 uri_encode($prop), ' ',
2209 uri_encode($v), "\n"
2210 or croak $!;
2211 } else {
2212 print $fh " -$t: ",
2213 uri_encode($ppath), ' ',
2214 uri_encode($prop), "\n"
2215 or croak $!;
2216 }
2217 }
2218 }
2219 }
2220 foreach my $t (qw/absent_file absent_directory/) {
2221 $h = $untracked->{$t} or next;
2222 foreach my $parent (sort keys %$h) {
2223 foreach my $path (sort @{$h->{$parent}}) {
2224 print $fh " $t: ",
2225 uri_encode("$parent/$path"), "\n"
2226 or croak $!;
2227 warn "W: $t: $parent/$path ",
2228 "Insufficient permissions?\n";
2229 }
2230 }
2231 }
2232}
2233sub make_log_entry {
2235 my ($self, $rev, $parents, $untracked) = @_;
2236 my $rp = $self->ra->rev_proplist($rev);
2237 my %log_entry = ( parents => $parents || [], revision => $rev,
2238 revprops => $rp, log => '');
2239 open my $un, '>>', "$self->{dir}/unhandled.log" or croak $!;
2240 $self->write_untracked($rev, $un, $untracked);
2241 foreach (sort keys %$rp) {
2242 my $v = $rp->{$_};
2243 if (/^svn:(author|date|log)$/) {
2244 $log_entry{$1} = $v;
2245 } else {
2246 print $un " rev_prop: ", uri_encode($_), ' ',
2247 uri_encode($v), "\n";
2248 }
2249 }
2250 close $un or croak $!;
2251 $log_entry{date} = parse_svn_date($log_entry{date});
2252 $log_entry{author} = check_author($log_entry{author});
2253 $log_entry{log} .= "\n";
2254 \%log_entry;
2255}
2256sub fetch {
2258 my ($self, @parents) = @_;
2259 my ($last_rev, $last_commit) = $self->last_rev_commit;
2260 my ($base, $head) = $self->parse_revision($last_rev);
2261 return if ($base > $head);
2262 if (defined $last_commit) {
2263 $self->assert_index_clean($last_commit);
2264 }
2265 my $inc = 1000;
2266 my ($min, $max) = ($base, $head < $base + $inc ? $head : $base + $inc);
2267 my $err_handler = $SVN::Error::handler;
2268 $SVN::Error::handler = \&skip_unknown_revs;
2269 while (1) {
2270 my @revs;
2271 $self->ra->get_log([''], $min, $max, 0, 1, 1, sub {
2272 my ($paths, $rev, $author, $date, $msg) = @_;
2273 push @revs, $rev });
2274 foreach (@revs) {
2275 my $log_entry = $self->do_fetch(undef, $_);
2276 $self->do_git_commit($log_entry, @parents);
2277 }
2278 last if $max >= $head;
2279 $min = $max + 1;
2280 $max += $inc;
2281 $max = $head if ($max > $head);
2282 }
2283 $SVN::Error::handler = $err_handler;
2284}
2285sub set_tree_cb {
2287 my ($self, $log_entry, $tree, $rev, $date, $author) = @_;
2288 # TODO: enable and test optimized commits:
2289 if (0 && $rev == ($self->{last_rev} + 1)) {
2290 $log_entry->{revision} = $rev;
2291 $log_entry->{author} = $author;
2292 $self->do_git_commit($log_entry, "$rev=$tree");
2293 } else {
2294 $self->fetch("$rev=$tree");
2295 }
2296}
2297sub set_tree {
2299 my ($self, $tree) = (shift, shift);
2300 my $log_entry = get_commit_entry($tree);
2301 unless ($self->{last_rev}) {
2302 fatal("Must have an existing revision to commit\n");
2303 }
2304 my $pool = SVN::Pool->new;
2305 my $ed = SVN::Git::Editor->new({ r => $self->{last_rev},
2306 ra => $self->ra->dup,
2307 c => $tree,
2308 svn_path => $self->ra->{svn_path}
2309 },
2310 $self->ra->get_commit_editor(
2311 $log_entry->{log}, sub {
2312 $self->set_tree_cb($log_entry,
2313 $tree, @_);
2314 }),
2315 $pool);
2316 my $mods = $ed->apply_diff($self->{last_commit}, $tree);
2317 if (@$mods == 0) {
2318 print "No changes\nr$self->{last_rev} = $tree\n";
2319 }
2320 $pool->clear;
2321}
2322sub skip_unknown_revs {
2324 my ($err) = @_;
2325 my $errno = $err->apr_err();
2326 # Maybe the branch we're tracking didn't
2327 # exist when the repo started, so it's
2328 # not an error if it doesn't, just continue
2329 #
2330 # Wonderfully consistent library, eh?
2331 # 160013 - svn:// and file://
2332 # 175002 - http(s)://
2333 # 175007 - http(s):// (this repo required authorization, too...)
2334 # More codes may be discovered later...
2335 if ($errno == 175007 || $errno == 175002 || $errno == 160013) {
2336 return;
2337 }
2338 croak "Error from SVN, ($errno): ", $err->expanded_message,"\n";
2339}
2340# rev_db:
2342# Tie::File seems to be prone to offset errors if revisions get sparse,
2343# it's not that fast, either. Tie::File is also not in Perl 5.6. So
2344# one of my favorite modules is out :< Next up would be one of the DBM
2345# modules, but I'm not sure which is most portable... So I'll just
2346# go with something that's plain-text, but still capable of
2347# being randomly accessed. So here's my ultra-simple fixed-width
2348# database. All records are 40 characters + "\n", so it's easy to seek
2349# to a revision: (41 * rev) is the byte offset.
2350# A record of 40 0s denotes an empty revision.
2351# And yes, it's still pretty fast (faster than Tie::File).
2352sub rev_db_set {
2354 my ($self, $rev, $commit) = @_;
2355 length $commit == 40 or croak "arg3 must be a full SHA1 hexsum\n";
2356 open my $fh, '+<', $self->{db_path} or croak $!;
2357 my $offset = $rev * 41;
2358 # assume that append is the common case:
2359 seek $fh, 0, 2 or croak $!;
2360 my $pos = tell $fh;
2361 if ($pos < $offset) {
2362 print $fh (('0' x 40),"\n") x (($offset - $pos) / 41)
2363 or croak $!;
2364 }
2365 seek $fh, $offset, 0 or croak $!;
2366 print $fh $commit,"\n" or croak $!;
2367 close $fh or croak $!;
2368}
2369sub rev_db_get {
2371 my ($self, $rev) = @_;
2372 my $ret;
2373 my $offset = $rev * 41;
2374 open my $fh, '<', $self->{db_path} or croak $!;
2375 if (seek $fh, $offset, 0) {
2376 $ret = readline $fh;
2377 if (defined $ret) {
2378 chomp $ret;
2379 $ret = undef if ($ret =~ /^0{40}$/);
2380 }
2381 }
2382 close $fh or croak $!;
2383 $ret;
2384}
2385sub _new {
2387 my ($class, $id) = @_;
2388 $id ||= $Git::SVN::default;
2389 my $dir = "$ENV{GIT_DIR}/svn/$id";
2390 bless { id => $id, dir => $dir, index => "$dir/index",
2391 db_path => "$dir/.rev_db" }, $class;
2392}
2393package Git::SVN::Prompt;
2396use strict;
2397use warnings;
2398require SVN::Core;
2399use vars qw/$_no_auth_cache $_username/;
2400sub simple {
2402 my ($cred, $realm, $default_username, $may_save, $pool) = @_;
2403 $may_save = undef if $_no_auth_cache;
2404 $default_username = $_username if defined $_username;
2405 if (defined $default_username && length $default_username) {
2406 if (defined $realm && length $realm) {
2407 print STDERR "Authentication realm: $realm\n";
2408 STDERR->flush;
2409 }
2410 $cred->username($default_username);
2411 } else {
2412 username($cred, $realm, $may_save, $pool);
2413 }
2414 $cred->password(_read_password("Password for '" .
2415 $cred->username . "': ", $realm));
2416 $cred->may_save($may_save);
2417 $SVN::_Core::SVN_NO_ERROR;
2418}
2419sub ssl_server_trust {
2421 my ($cred, $realm, $failures, $cert_info, $may_save, $pool) = @_;
2422 $may_save = undef if $_no_auth_cache;
2423 print STDERR "Error validating server certificate for '$realm':\n";
2424 if ($failures & $SVN::Auth::SSL::UNKNOWNCA) {
2425 print STDERR " - The certificate is not issued by a trusted ",
2426 "authority. Use the\n",
2427 " fingerprint to validate the certificate manually!\n";
2428 }
2429 if ($failures & $SVN::Auth::SSL::CNMISMATCH) {
2430 print STDERR " - The certificate hostname does not match.\n";
2431 }
2432 if ($failures & $SVN::Auth::SSL::NOTYETVALID) {
2433 print STDERR " - The certificate is not yet valid.\n";
2434 }
2435 if ($failures & $SVN::Auth::SSL::EXPIRED) {
2436 print STDERR " - The certificate has expired.\n";
2437 }
2438 if ($failures & $SVN::Auth::SSL::OTHER) {
2439 print STDERR " - The certificate has an unknown error.\n";
2440 }
2441 printf STDERR
2442 "Certificate information:\n".
2443 " - Hostname: %s\n".
2444 " - Valid: from %s until %s\n".
2445 " - Issuer: %s\n".
2446 " - Fingerprint: %s\n",
2447 map $cert_info->$_, qw(hostname valid_from valid_until
2448 issuer_dname fingerprint);
2449 my $choice;
2450prompt:
2451 print STDERR $may_save ?
2452 "(R)eject, accept (t)emporarily or accept (p)ermanently? " :
2453 "(R)eject or accept (t)emporarily? ";
2454 STDERR->flush;
2455 $choice = lc(substr(<STDIN> || 'R', 0, 1));
2456 if ($choice =~ /^t$/i) {
2457 $cred->may_save(undef);
2458 } elsif ($choice =~ /^r$/i) {
2459 return -1;
2460 } elsif ($may_save && $choice =~ /^p$/i) {
2461 $cred->may_save($may_save);
2462 } else {
2463 goto prompt;
2464 }
2465 $cred->accepted_failures($failures);
2466 $SVN::_Core::SVN_NO_ERROR;
2467}
2468sub ssl_client_cert {
2470 my ($cred, $realm, $may_save, $pool) = @_;
2471 $may_save = undef if $_no_auth_cache;
2472 print STDERR "Client certificate filename: ";
2473 STDERR->flush;
2474 chomp(my $filename = <STDIN>);
2475 $cred->cert_file($filename);
2476 $cred->may_save($may_save);
2477 $SVN::_Core::SVN_NO_ERROR;
2478}
2479sub ssl_client_cert_pw {
2481 my ($cred, $realm, $may_save, $pool) = @_;
2482 $may_save = undef if $_no_auth_cache;
2483 $cred->password(_read_password("Password: ", $realm));
2484 $cred->may_save($may_save);
2485 $SVN::_Core::SVN_NO_ERROR;
2486}
2487sub username {
2489 my ($cred, $realm, $may_save, $pool) = @_;
2490 $may_save = undef if $_no_auth_cache;
2491 if (defined $realm && length $realm) {
2492 print STDERR "Authentication realm: $realm\n";
2493 }
2494 my $username;
2495 if (defined $_username) {
2496 $username = $_username;
2497 } else {
2498 print STDERR "Username: ";
2499 STDERR->flush;
2500 chomp($username = <STDIN>);
2501 }
2502 $cred->username($username);
2503 $cred->may_save($may_save);
2504 $SVN::_Core::SVN_NO_ERROR;
2505}
2506sub _read_password {
2508 my ($prompt, $realm) = @_;
2509 print STDERR $prompt;
2510 STDERR->flush;
2511 require Term::ReadKey;
2512 Term::ReadKey::ReadMode('noecho');
2513 my $password = '';
2514 while (defined(my $key = Term::ReadKey::ReadKey(0))) {
2515 last if $key =~ /[\012\015]/; # \n\r
2516 $password .= $key;
2517 }
2518 Term::ReadKey::ReadMode('restore');
2519 print STDERR "\n";
2520 STDERR->flush;
2521 $password;
2522}
2523package main;
2525sub uri_encode {
2527 my ($f) = @_;
2528 $f =~ s#([^a-zA-Z0-9\*!\:_\./\-])#uc sprintf("%%%02x",ord($1))#eg;
2529 $f
2530}
2531sub uri_decode {
2533 my ($f) = @_;
2534 $f =~ tr/+/ /;
2535 $f =~ s/%([A-F0-9]{2})/chr hex($1)/ge;
2536 $f
2537}
2538sub libsvn_log_entry {
2540 my ($rev, $author, $date, $msg, $parents, $untracked) = @_;
2541 my ($Y,$m,$d,$H,$M,$S) = ($date =~ /^(\d{4})\-(\d\d)\-(\d\d)T
2542 (\d\d)\:(\d\d)\:(\d\d).\d+Z$/x)
2543 or die "Unable to parse date: $date\n";
2544 if (defined $author && length $author > 0 &&
2545 defined $_authors && ! defined $users{$author}) {
2546 die "Author: $author not defined in $_authors file\n";
2547 }
2548 $msg = '' if ($rev == 0 && !defined $msg);
2549 open my $un, '>>', "$GIT_SVN_DIR/unhandled.log" or croak $!;
2551 my $h;
2552 print $un "r$rev\n" or croak $!;
2553 $h = $untracked->{empty};
2554 foreach (sort keys %$h) {
2555 my $act = $h->{$_} ? '+empty_dir' : '-empty_dir';
2556 print $un " $act: ", uri_encode($_), "\n" or croak $!;
2557 warn "W: $act: $_\n";
2558 }
2559 foreach my $t (qw/dir_prop file_prop/) {
2560 $h = $untracked->{$t} or next;
2561 foreach my $path (sort keys %$h) {
2562 my $ppath = $path eq '' ? '.' : $path;
2563 foreach my $prop (sort keys %{$h->{$path}}) {
2564 next if $SKIP{$prop};
2565 my $v = $h->{$path}->{$prop};
2566 if (defined $v) {
2567 print $un " +$t: ",
2568 uri_encode($ppath), ' ',
2569 uri_encode($prop), ' ',
2570 uri_encode($v), "\n"
2571 or croak $!;
2572 } else {
2573 print $un " -$t: ",
2574 uri_encode($ppath), ' ',
2575 uri_encode($prop), "\n"
2576 or croak $!;
2577 }
2578 }
2579 }
2580 }
2581 foreach my $t (qw/absent_file absent_directory/) {
2582 $h = $untracked->{$t} or next;
2583 foreach my $parent (sort keys %$h) {
2584 foreach my $path (sort @{$h->{$parent}}) {
2585 print $un " $t: ",
2586 uri_encode("$parent/$path"), "\n"
2587 or croak $!;
2588 warn "W: $t: $parent/$path ",
2589 "Insufficient permissions?\n";
2590 }
2591 }
2592 }
2593 # revprops (make this optional? it's an extra network trip...)
2595 my $rp = $SVN->rev_proplist($rev);
2596 foreach (sort keys %$rp) {
2597 next if /^svn:(?:author|date|log)$/;
2598 print $un " rev_prop: ", uri_encode($_), ' ',
2599 uri_encode($rp->{$_}), "\n";
2600 }
2601 close $un or croak $!;
2602 { revision => $rev, date => "+0000 $Y-$m-$d $H:$M:$S",
2604 author => $author, msg => $msg."\n", parents => $parents || [],
2605 revprops => $rp }
2606}
2607sub libsvn_fetch {
2609 my ($last_commit, $paths, $rev, $author, $date, $msg) = @_;
2610 my $ed = SVN::Git::Fetcher->new({ c => $last_commit, q => $_q });
2611 my (undef, $last_rev, undef) = cmt_metadata($last_commit);
2612 unless ($SVN->gs_do_update($last_rev, $rev, '', 1, $ed)) {
2613 die "SVN connection failed somewhere...\n";
2614 }
2615 libsvn_log_entry($rev, $author, $date, $msg, [$last_commit], $ed);
2616}
2617sub svn_grab_base_rev {
2619 my $c = eval { command_oneline([qw/rev-parse --verify/,
2620 "refs/remotes/$GIT_SVN^0"],
2621 { STDERR => 0 }) };
2622 if (defined $c && length $c) {
2623 my ($url, $rev, $uuid) = cmt_metadata($c);
2624 return ($rev, $c) if defined $rev;
2625 }
2626 if ($_no_metadata) {
2627 my $offset = -41; # from tail
2628 my $rl;
2629 open my $fh, '<', $REVDB or
2630 die "--no-metadata specified and $REVDB not readable\n";
2631 seek $fh, $offset, 2;
2632 $rl = readline $fh;
2633 defined $rl or return (undef, undef);
2634 chomp $rl;
2635 while ($c ne $rl && tell $fh != 0) {
2636 $offset -= 41;
2637 seek $fh, $offset, 2;
2638 $rl = readline $fh;
2639 defined $rl or return (undef, undef);
2640 chomp $rl;
2641 }
2642 my $rev = tell $fh;
2643 croak $! if ($rev < -1);
2644 $rev = ($rev - 41) / 41;
2645 close $fh or croak $!;
2646 return ($rev, $c);
2647 }
2648 return (undef, undef);
2649}
2650sub libsvn_parse_revision {
2652 my $base = shift;
2653 my $head = $SVN->get_latest_revnum();
2654 if (!defined $_revision || $_revision eq 'BASE:HEAD') {
2655 return ($base + 1, $head) if (defined $base);
2656 return (0, $head);
2657 }
2658 return ($1, $2) if ($_revision =~ /^(\d+):(\d+)$/);
2659 return ($_revision, $_revision) if ($_revision =~ /^\d+$/);
2660 if ($_revision =~ /^BASE:(\d+)$/) {
2661 return ($base + 1, $1) if (defined $base);
2662 return (0, $head);
2663 }
2664 return ($1, $head) if ($_revision =~ /^(\d+):HEAD$/);
2665 die "revision argument: $_revision not understood by git-svn\n",
2666 "Try using the command-line svn client instead\n";
2667}
2668sub libsvn_traverse_ignore {
2670 my ($fh, $path, $r) = @_;
2671 $path =~ s#^/+##g;
2672 my ($dirent, undef, $props) = $SVN->get_dir($path, $r);
2673 my $p = $path;
2674 $p =~ s#^\Q$SVN->{svn_path}\E/##;
2675 print $fh length $p ? "\n# $p\n" : "\n# /\n";
2676 if (my $s = $props->{'svn:ignore'}) {
2677 $s =~ s/[\r\n]+/\n/g;
2678 chomp $s;
2679 if (length $p == 0) {
2680 $s =~ s#\n#\n/$p#g;
2681 print $fh "/$s\n";
2682 } else {
2683 $s =~ s#\n#\n/$p/#g;
2684 print $fh "/$p/$s\n";
2685 }
2686 }
2687 foreach (sort keys %$dirent) {
2688 next if $dirent->{$_}->kind != $SVN::Node::dir;
2689 libsvn_traverse_ignore($fh, "$path/$_", $r);
2690 }
2691}
2692sub revisions_eq {
2694 my ($path, $r0, $r1) = @_;
2695 return 1 if $r0 == $r1;
2696 my $nr = 0;
2697 # should be OK to use Pool here (r1 - r0) should be small
2698 $SVN->get_log([$path], $r0, $r1, 0, 0, 1, sub {$nr++});
2699 return 0 if ($nr > 1);
2700 return 1;
2701}
2702sub libsvn_find_parent_branch {
2704 my ($paths, $rev, $author, $date, $msg) = @_;
2705 my $svn_path = '/'.$SVN->{svn_path};
2706 # look for a parent from another branch:
2708 my $i = $paths->{$svn_path} or return;
2709 my $branch_from = $i->copyfrom_path or return;
2710 my $r = $i->copyfrom_rev;
2711 print STDERR "Found possible branch point: ",
2712 "$branch_from => $svn_path, $r\n";
2713 $branch_from =~ s#^/##;
2714 my $l_map = {};
2715 read_url_paths_all($l_map, '', "$GIT_DIR/svn");
2716 my $url = $SVN->{repos_root};
2717 defined $l_map->{$url} or return;
2718 my $id = $l_map->{$url}->{$branch_from};
2719 if (!defined $id && $_follow_parent) {
2720 print STDERR "Following parent: $branch_from\@$r\n";
2721 # auto create a new branch and follow it
2722 $id = basename($branch_from);
2723 $id .= '@'.$r if -r "$GIT_DIR/svn/$id";
2724 while (-r "$GIT_DIR/svn/$id") {
2725 # just grow a tail if we're not unique enough :x
2726 $id .= '-';
2727 }
2728 }
2729 return unless defined $id;
2730 my ($r0, $parent) = find_rev_before($r,$id,1);
2732 if ($_follow_parent && (!defined $r0 || !defined $parent)) {
2733 defined(my $pid = fork) or croak $!;
2734 if (!$pid) {
2735 $GIT_SVN = $ENV{GIT_SVN_ID} = $id;
2736 init_vars();
2737 $SVN_URL = "$url/$branch_from";
2738 $SVN = undef;
2739 setup_git_svn();
2740 # we can't assume SVN_URL exists at r+1:
2741 $_revision = "0:$r";
2742 fetch_lib();
2743 exit 0;
2744 }
2745 waitpid $pid, 0;
2746 croak $? if $?;
2747 ($r0, $parent) = find_rev_before($r,$id,1);
2748 }
2749 return unless (defined $r0 && defined $parent);
2750 if (revisions_eq($branch_from, $r0, $r)) {
2751 unlink $GIT_SVN_INDEX;
2752 print STDERR "Found branch parent: ($GIT_SVN) $parent\n";
2753 command_noisy('read-tree', $parent);
2754 unless ($SVN->can_do_switch) {
2755 return _libsvn_new_tree($paths, $rev, $author, $date,
2756 $msg, [$parent]);
2757 }
2758 # do_switch works with svn/trunk >= r22312, but that is not
2759 # included with SVN 1.4.2 (the latest version at the moment),
2760 # so we can't rely on it.
2761 my $ra = Git::SVN::Ra->new("$url/$branch_from");
2762 my $ed = SVN::Git::Fetcher->new({c => $parent, q => $_q });
2763 $ra->gs_do_switch($r0, $rev, '', 1, $SVN->{url}, $ed) or
2764 die "SVN connection failed somewhere...\n";
2765 return libsvn_log_entry($rev, $author, $date, $msg, [$parent]);
2766 }
2767 print STDERR "Nope, branch point not imported or unknown\n";
2768 return undef;
2769}
2770sub libsvn_new_tree {
2772 if (my $log_entry = libsvn_find_parent_branch(@_)) {
2773 return $log_entry;
2774 }
2775 my ($paths, $rev, $author, $date, $msg) = @_; # $pool is last
2776 _libsvn_new_tree($paths, $rev, $author, $date, $msg, []);
2777}
2778sub _libsvn_new_tree {
2780 my ($paths, $rev, $author, $date, $msg, $parents) = @_;
2781 my $ed = SVN::Git::Fetcher->new({q => $_q});
2782 unless ($SVN->gs_do_update($rev, $rev, '', 1, $ed)) {
2783 die "SVN connection failed somewhere...\n";
2784 }
2785 libsvn_log_entry($rev, $author, $date, $msg, $parents, $ed);
2786}
2787sub find_graft_path_commit {
2789 my ($tree_paths, $p1, $r1) = @_;
2790 foreach my $x (keys %$tree_paths) {
2791 next unless ($p1 =~ /^\Q$x\E/);
2792 my $i = $tree_paths->{$x};
2793 my ($r0, $parent) = find_rev_before($r1,$i,1);
2794 return $parent if (defined $r0 && $r0 == $r1);
2795 print STDERR "r$r1 of $i not imported\n";
2796 next;
2797 }
2798 return undef;
2799}
2800sub find_graft_path_parents {
2802 my ($grafts, $tree_paths, $c, $p0, $r0) = @_;
2803 foreach my $x (keys %$tree_paths) {
2804 next unless ($p0 =~ /^\Q$x\E/);
2805 my $i = $tree_paths->{$x};
2806 my ($r, $parent) = find_rev_before($r0, $i, 1);
2807 if (defined $r && defined $parent && revisions_eq($x,$r,$r0)) {
2808 my ($url_b, undef, $uuid_b) = cmt_metadata($c);
2809 my ($url_a, undef, $uuid_a) = cmt_metadata($parent);
2810 next if ($url_a && $url_b && $url_a eq $url_b &&
2811 $uuid_b eq $uuid_a);
2812 $grafts->{$c}->{$parent} = 1;
2813 }
2814 }
2815}
2816sub libsvn_graft_file_copies {
2818 my ($grafts, $tree_paths, $path, $paths, $rev) = @_;
2819 foreach (keys %$paths) {
2820 my $i = $paths->{$_};
2821 my ($m, $p0, $r0) = ($i->action, $i->copyfrom_path,
2822 $i->copyfrom_rev);
2823 next unless (defined $p0 && defined $r0);
2824 my $p1 = $_;
2826 $p1 =~ s#^/##;
2827 $p0 =~ s#^/##;
2828 my $c = find_graft_path_commit($tree_paths, $p1, $rev);
2829 next unless $c;
2830 find_graft_path_parents($grafts, $tree_paths, $c, $p0, $r0);
2831 }
2832}
2833sub set_index {
2835 my $old = $ENV{GIT_INDEX_FILE};
2836 $ENV{GIT_INDEX_FILE} = shift;
2837 return $old;
2838}
2839sub restore_index {
2841 my ($old) = @_;
2842 if (defined $old) {
2843 $ENV{GIT_INDEX_FILE} = $old;
2844 } else {
2845 delete $ENV{GIT_INDEX_FILE};
2846 }
2847}
2848sub libsvn_commit_cb {
2850 my ($rev, $date, $committer, $c, $msg, $r_last, $cmt_last) = @_;
2851 if ($_optimize_commits && $rev == ($r_last + 1)) {
2852 my $log = libsvn_log_entry($rev,$committer,$date,$msg);
2853 $log->{tree} = get_tree_from_treeish($c);
2854 my $cmt = git_commit($log, $cmt_last, $c);
2855 my @diff = command('diff-tree', $cmt, $c);
2856 if (@diff) {
2857 print STDERR "Trees differ: $cmt $c\n",
2858 join('',@diff),"\n";
2859 exit 1;
2860 }
2861 } else {
2862 fetch("$rev=$c");
2863 }
2864}
2865sub libsvn_ls_fullurl {
2867 my $fullurl = shift;
2868 my $ra = Git::SVN::Ra->new($fullurl);
2869 my @ret;
2870 my $r = defined $_revision ? $_revision : $ra->get_latest_revnum;
2871 my ($dirent, undef, undef) = $ra->get_dir('', $r);
2872 foreach my $d (sort keys %$dirent) {
2873 if ($dirent->{$d}->kind == $SVN::Node::dir) {
2874 push @ret, "$d/"; # add '/' for compat with cli svn
2875 }
2876 }
2877 return @ret;
2878}
2879sub libsvn_skip_unknown_revs {
2881 my $err = shift;
2882 my $errno = $err->apr_err();
2883 # Maybe the branch we're tracking didn't
2884 # exist when the repo started, so it's
2885 # not an error if it doesn't, just continue
2886 #
2887 # Wonderfully consistent library, eh?
2888 # 160013 - svn:// and file://
2889 # 175002 - http(s)://
2890 # 175007 - http(s):// (this repo required authorization, too...)
2891 # More codes may be discovered later...
2892 if ($errno == 175007 || $errno == 175002 || $errno == 160013) {
2893 return;
2894 }
2895 croak "Error from SVN, ($errno): ", $err->expanded_message,"\n";
2896};
2897# Tie::File seems to be prone to offset errors if revisions get sparse,
2899# it's not that fast, either. Tie::File is also not in Perl 5.6. So
2900# one of my favorite modules is out :< Next up would be one of the DBM
2901# modules, but I'm not sure which is most portable... So I'll just
2902# go with something that's plain-text, but still capable of
2903# being randomly accessed. So here's my ultra-simple fixed-width
2904# database. All records are 40 characters + "\n", so it's easy to seek
2905# to a revision: (41 * rev) is the byte offset.
2906# A record of 40 0s denotes an empty revision.
2907# And yes, it's still pretty fast (faster than Tie::File).
2908sub revdb_set {
2909 my ($file, $rev, $commit) = @_;
2910 length $commit == 40 or croak "arg3 must be a full SHA1 hexsum\n";
2911 open my $fh, '+<', $file or croak $!;
2912 my $offset = $rev * 41;
2913 # assume that append is the common case:
2914 seek $fh, 0, 2 or croak $!;
2915 my $pos = tell $fh;
2916 if ($pos < $offset) {
2917 print $fh (('0' x 40),"\n") x (($offset - $pos) / 41);
2918 }
2919 seek $fh, $offset, 0 or croak $!;
2920 print $fh $commit,"\n";
2921 close $fh or croak $!;
2922}
2923sub revdb_get {
2925 my ($file, $rev) = @_;
2926 my $ret;
2927 my $offset = $rev * 41;
2928 open my $fh, '<', $file or croak $!;
2929 seek $fh, $offset, 0;
2930 if (tell $fh == $offset) {
2931 $ret = readline $fh;
2932 if (defined $ret) {
2933 chomp $ret;
2934 $ret = undef if ($ret =~ /^0{40}$/);
2935 }
2936 }
2937 close $fh or croak $!;
2938 return $ret;
2939}
2940sub copy_remote_ref {
2942 my $origin = $_cp_remote ? $_cp_remote : 'origin';
2943 my $ref = "refs/remotes/$GIT_SVN";
2944 if (command('ls-remote', $origin, $ref)) {
2945 command_noisy('fetch', $origin, "$ref:$ref");
2946 } elsif ($_cp_remote && !$_upgrade) {
2947 die "Unable to find remote reference: ",
2948 "refs/remotes/$GIT_SVN on $origin\n";
2949 }
2950}
2951{
2953 my $kill_stupid_warnings = $SVN::Node::none.$SVN::Node::file.
2954 $SVN::Node::dir.$SVN::Node::unknown.
2955 $SVN::Node::none.$SVN::Node::file.
2956 $SVN::Node::dir.$SVN::Node::unknown.
2957 $SVN::Auth::SSL::CNMISMATCH.
2958 $SVN::Auth::SSL::NOTYETVALID.
2959 $SVN::Auth::SSL::EXPIRED.
2960 $SVN::Auth::SSL::UNKNOWNCA.
2961 $SVN::Auth::SSL::OTHER;
2962}
2963package SVN::Git::Fetcher;
2965use vars qw/@ISA/;
2966use strict;
2967use warnings;
2968use Carp qw/croak/;
2969use IO::File qw//;
2970# file baton members: path, mode_a, mode_b, pool, fh, blob, base
2972sub new {
2973 my ($class, $git_svn) = @_;
2974 my $self = SVN::Delta::Editor->new;
2975 bless $self, $class;
2976 $self->{c} = $git_svn->{c} if exists $git_svn->{c};
2977 $self->{q} = $git_svn->{q};
2978 $self->{empty} = {};
2979 $self->{dir_prop} = {};
2980 $self->{file_prop} = {};
2981 $self->{absent_dir} = {};
2982 $self->{absent_file} = {};
2983 ($self->{gui}, $self->{ctx}) = command_input_pipe(
2984 qw/update-index -z --index-info/);
2985 require Digest::MD5;
2986 $self;
2987}
2988sub open_root {
2990 { path => '' };
2991}
2992sub open_directory {
2994 my ($self, $path, $pb, $rev) = @_;
2995 { path => $path };
2996}
2997sub delete_entry {
2999 my ($self, $path, $rev, $pb) = @_;
3000 my $gui = $self->{gui};
3001 # remove entire directories.
3003 if (command('ls-tree', $self->{c}, '--', $path) =~ /^040000 tree/) {
3004 my ($ls, $ctx) = command_output_pipe(qw/ls-tree
3005 -r --name-only -z/,
3006 $self->{c}, '--', $path);
3007 local $/ = "\0";
3008 while (<$ls>) {
3009 print $gui '0 ',0 x 40,"\t",$_ or croak $!;
3010 print "\tD\t$_\n" unless $self->{q};
3011 }
3012 print "\tD\t$path/\n" unless $self->{q};
3013 command_close_pipe($ls, $ctx);
3014 $self->{empty}->{$path} = 0
3015 } else {
3016 print $gui '0 ',0 x 40,"\t",$path,"\0" or croak $!;
3017 print "\tD\t$path\n" unless $self->{q};
3018 }
3019 undef;
3020}
3021sub open_file {
3023 my ($self, $path, $pb, $rev) = @_;
3024 my ($mode, $blob) = (command('ls-tree', $self->{c}, '--',$path)
3025 =~ /^(\d{6}) blob ([a-f\d]{40})\t/);
3026 unless (defined $mode && defined $blob) {
3027 die "$path was not found in commit $self->{c} (r$rev)\n";
3028 }
3029 { path => $path, mode_a => $mode, mode_b => $mode, blob => $blob,
3030 pool => SVN::Pool->new, action => 'M' };
3031}
3032sub add_file {
3034 my ($self, $path, $pb, $cp_path, $cp_rev) = @_;
3035 my ($dir, $file) = ($path =~ m#^(.*?)/?([^/]+)$#);
3036 delete $self->{empty}->{$dir};
3037 { path => $path, mode_a => 100644, mode_b => 100644,
3038 pool => SVN::Pool->new, action => 'A' };
3039}
3040sub add_directory {
3042 my ($self, $path, $cp_path, $cp_rev) = @_;
3043 my ($dir, $file) = ($path =~ m#^(.*?)/?([^/]+)$#);
3044 delete $self->{empty}->{$dir};
3045 $self->{empty}->{$path} = 1;
3046 { path => $path };
3047}
3048sub change_dir_prop {
3050 my ($self, $db, $prop, $value) = @_;
3051 $self->{dir_prop}->{$db->{path}} ||= {};
3052 $self->{dir_prop}->{$db->{path}}->{$prop} = $value;
3053 undef;
3054}
3055sub absent_directory {
3057 my ($self, $path, $pb) = @_;
3058 $self->{absent_dir}->{$pb->{path}} ||= [];
3059 push @{$self->{absent_dir}->{$pb->{path}}}, $path;
3060 undef;
3061}
3062sub absent_file {
3064 my ($self, $path, $pb) = @_;
3065 $self->{absent_file}->{$pb->{path}} ||= [];
3066 push @{$self->{absent_file}->{$pb->{path}}}, $path;
3067 undef;
3068}
3069sub change_file_prop {
3071 my ($self, $fb, $prop, $value) = @_;
3072 if ($prop eq 'svn:executable') {
3073 if ($fb->{mode_b} != 120000) {
3074 $fb->{mode_b} = defined $value ? 100755 : 100644;
3075 }
3076 } elsif ($prop eq 'svn:special') {
3077 $fb->{mode_b} = defined $value ? 120000 : 100644;
3078 } else {
3079 $self->{file_prop}->{$fb->{path}} ||= {};
3080 $self->{file_prop}->{$fb->{path}}->{$prop} = $value;
3081 }
3082 undef;
3083}
3084sub apply_textdelta {
3086 my ($self, $fb, $exp) = @_;
3087 my $fh = IO::File->new_tmpfile;
3088 $fh->autoflush(1);
3089 # $fh gets auto-closed() by SVN::TxDelta::apply(),
3090 # (but $base does not,) so dup() it for reading in close_file
3091 open my $dup, '<&', $fh or croak $!;
3092 my $base = IO::File->new_tmpfile;
3093 $base->autoflush(1);
3094 if ($fb->{blob}) {
3095 defined (my $pid = fork) or croak $!;
3096 if (!$pid) {
3097 open STDOUT, '>&', $base or croak $!;
3098 print STDOUT 'link ' if ($fb->{mode_a} == 120000);
3099 exec qw/git-cat-file blob/, $fb->{blob} or croak $!;
3100 }
3101 waitpid $pid, 0;
3102 croak $? if $?;
3103 if (defined $exp) {
3105 seek $base, 0, 0 or croak $!;
3106 my $md5 = Digest::MD5->new;
3107 $md5->addfile($base);
3108 my $got = $md5->hexdigest;
3109 die "Checksum mismatch: $fb->{path} $fb->{blob}\n",
3110 "expected: $exp\n",
3111 " got: $got\n" if ($got ne $exp);
3112 }
3113 }
3114 seek $base, 0, 0 or croak $!;
3115 $fb->{fh} = $dup;
3116 $fb->{base} = $base;
3117 [ SVN::TxDelta::apply($base, $fh, undef, $fb->{path}, $fb->{pool}) ];
3118}
3119sub close_file {
3121 my ($self, $fb, $exp) = @_;
3122 my $hash;
3123 my $path = $fb->{path};
3124 if (my $fh = $fb->{fh}) {
3125 seek($fh, 0, 0) or croak $!;
3126 my $md5 = Digest::MD5->new;
3127 $md5->addfile($fh);
3128 my $got = $md5->hexdigest;
3129 die "Checksum mismatch: $path\n",
3130 "expected: $exp\n got: $got\n" if ($got ne $exp);
3131 seek($fh, 0, 0) or croak $!;
3132 if ($fb->{mode_b} == 120000) {
3133 read($fh, my $buf, 5) == 5 or croak $!;
3134 $buf eq 'link ' or die "$path has mode 120000",
3135 "but is not a link\n";
3136 }
3137 defined(my $pid = open my $out,'-|') or die "Can't fork: $!\n";
3138 if (!$pid) {
3139 open STDIN, '<&', $fh or croak $!;
3140 exec qw/git-hash-object -w --stdin/ or croak $!;
3141 }
3142 chomp($hash = do { local $/; <$out> });
3143 close $out or croak $!;
3144 close $fh or croak $!;
3145 $hash =~ /^[a-f\d]{40}$/ or die "not a sha1: $hash\n";
3146 close $fb->{base} or croak $!;
3147 } else {
3148 $hash = $fb->{blob} or die "no blob information\n";
3149 }
3150 $fb->{pool}->clear;
3151 my $gui = $self->{gui};
3152 print $gui "$fb->{mode_b} $hash\t$path\0" or croak $!;
3153 print "\t$fb->{action}\t$path\n" if $fb->{action} && ! $self->{q};
3154 undef;
3155}
3156sub abort_edit {
3158 my $self = shift;
3159 eval { command_close_pipe($self->{gui}, $self->{ctx}) };
3160 $self->SUPER::abort_edit(@_);
3161}
3162sub close_edit {
3164 my $self = shift;
3165 command_close_pipe($self->{gui}, $self->{ctx});
3166 $self->{git_commit_ok} = 1;
3167 $self->SUPER::close_edit(@_);
3168}
3169package SVN::Git::Editor;
3171use vars qw/@ISA/;
3172use strict;
3173use warnings;
3174use Carp qw/croak/;
3175use IO::File;
3176sub new {
3178 my $class = shift;
3179 my $git_svn = shift;
3180 my $self = SVN::Delta::Editor->new(@_);
3181 bless $self, $class;
3182 foreach (qw/svn_path c r ra /) {
3183 die "$_ required!\n" unless (defined $git_svn->{$_});
3184 $self->{$_} = $git_svn->{$_};
3185 }
3186 $self->{pool} = SVN::Pool->new;
3187 $self->{bat} = { '' => $self->open_root($self->{r}, $self->{pool}) };
3188 $self->{rm} = { };
3189 require Digest::MD5;
3190 return $self;
3191}
3192sub split_path {
3194 return ($_[0] =~ m#^(.*?)/?([^/]+)$#);
3195}
3196sub repo_path {
3198 (defined $_[1] && length $_[1]) ? $_[1] : ''
3199}
3200sub url_path {
3202 my ($self, $path) = @_;
3203 $self->{ra}->{url} . '/' . $self->repo_path($path);
3204}
3205sub rmdirs {
3207 my ($self, $q) = @_;
3208 my $rm = $self->{rm};
3209 delete $rm->{''}; # we never delete the url we're tracking
3210 return unless %$rm;
3211 foreach (keys %$rm) {
3213 my @d = split m#/#, $_;
3214 my $c = shift @d;
3215 $rm->{$c} = 1;
3216 while (@d) {
3217 $c .= '/' . shift @d;
3218 $rm->{$c} = 1;
3219 }
3220 }
3221 delete $rm->{$self->{svn_path}};
3222 delete $rm->{''}; # we never delete the url we're tracking
3223 return unless %$rm;
3224 my ($fh, $ctx) = command_output_pipe(
3226 qw/ls-tree --name-only -r -z/, $self->{c});
3227 local $/ = "\0";
3228 while (<$fh>) {
3229 chomp;
3230 my @dn = split m#/#, $_;
3231 while (pop @dn) {
3232 delete $rm->{join '/', @dn};
3233 }
3234 unless (%$rm) {
3235 close $fh;
3236 return;
3237 }
3238 }
3239 command_close_pipe($fh, $ctx);
3240 my ($r, $p, $bat) = ($self->{r}, $self->{pool}, $self->{bat});
3242 foreach my $d (sort { $b =~ tr#/#/# <=> $a =~ tr#/#/# } keys %$rm) {
3243 $self->close_directory($bat->{$d}, $p);
3244 my ($dn) = ($d =~ m#^(.*?)/?(?:[^/]+)$#);
3245 print "\tD+\t$d/\n" unless $q;
3246 $self->SUPER::delete_entry($d, $r, $bat->{$dn}, $p);
3247 delete $bat->{$d};
3248 }
3249}
3250sub open_or_add_dir {
3252 my ($self, $full_path, $baton) = @_;
3253 my $t = $self->{ra}->check_path($full_path, $self->{r});
3254 if ($t == $SVN::Node::none) {
3255 return $self->add_directory($full_path, $baton,
3256 undef, -1, $self->{pool});
3257 } elsif ($t == $SVN::Node::dir) {
3258 return $self->open_directory($full_path, $baton,
3259 $self->{r}, $self->{pool});
3260 }
3261 print STDERR "$full_path already exists in repository at ",
3262 "r$self->{r} and it is not a directory (",
3263 ($t == $SVN::Node::file ? 'file' : 'unknown'),"/$t)\n";
3264 exit 1;
3265}
3266sub ensure_path {
3268 my ($self, $path) = @_;
3269 my $bat = $self->{bat};
3270 $path = $self->repo_path($path);
3271 return $bat->{''} unless (length $path);
3272 my @p = split m#/+#, $path;
3273 my $c = shift @p;
3274 $bat->{$c} ||= $self->open_or_add_dir($c, $bat->{''});
3275 while (@p) {
3276 my $c0 = $c;
3277 $c .= '/' . shift @p;
3278 $bat->{$c} ||= $self->open_or_add_dir($c, $bat->{$c0});
3279 }
3280 return $bat->{$c};
3281}
3282sub A {
3284 my ($self, $m, $q) = @_;
3285 my ($dir, $file) = split_path($m->{file_b});
3286 my $pbat = $self->ensure_path($dir);
3287 my $fbat = $self->add_file($self->repo_path($m->{file_b}), $pbat,
3288 undef, -1);
3289 print "\tA\t$m->{file_b}\n" unless $q;
3290 $self->chg_file($fbat, $m);
3291 $self->close_file($fbat,undef,$self->{pool});
3292}
3293sub C {
3295 my ($self, $m, $q) = @_;
3296 my ($dir, $file) = split_path($m->{file_b});
3297 my $pbat = $self->ensure_path($dir);
3298 my $fbat = $self->add_file($self->repo_path($m->{file_b}), $pbat,
3299 $self->url_path($m->{file_a}), $self->{r});
3300 print "\tC\t$m->{file_a} => $m->{file_b}\n" unless $q;
3301 $self->chg_file($fbat, $m);
3302 $self->close_file($fbat,undef,$self->{pool});
3303}
3304sub delete_entry {
3306 my ($self, $path, $pbat) = @_;
3307 my $rpath = $self->repo_path($path);
3308 my ($dir, $file) = split_path($rpath);
3309 $self->{rm}->{$dir} = 1;
3310 $self->SUPER::delete_entry($rpath, $self->{r}, $pbat, $self->{pool});
3311}
3312sub R {
3314 my ($self, $m, $q) = @_;
3315 my ($dir, $file) = split_path($m->{file_b});
3316 my $pbat = $self->ensure_path($dir);
3317 my $fbat = $self->add_file($self->repo_path($m->{file_b}), $pbat,
3318 $self->url_path($m->{file_a}), $self->{r});
3319 print "\tR\t$m->{file_a} => $m->{file_b}\n" unless $q;
3320 $self->chg_file($fbat, $m);
3321 $self->close_file($fbat,undef,$self->{pool});
3322 ($dir, $file) = split_path($m->{file_a});
3324 $pbat = $self->ensure_path($dir);
3325 $self->delete_entry($m->{file_a}, $pbat);
3326}
3327sub M {
3329 my ($self, $m, $q) = @_;
3330 my ($dir, $file) = split_path($m->{file_b});
3331 my $pbat = $self->ensure_path($dir);
3332 my $fbat = $self->open_file($self->repo_path($m->{file_b}),
3333 $pbat,$self->{r},$self->{pool});
3334 print "\t$m->{chg}\t$m->{file_b}\n" unless $q;
3335 $self->chg_file($fbat, $m);
3336 $self->close_file($fbat,undef,$self->{pool});
3337}
3338sub T { shift->M(@_) }
3340sub change_file_prop {
3342 my ($self, $fbat, $pname, $pval) = @_;
3343 $self->SUPER::change_file_prop($fbat, $pname, $pval, $self->{pool});
3344}
3345sub chg_file {
3347 my ($self, $fbat, $m) = @_;
3348 if ($m->{mode_b} =~ /755$/ && $m->{mode_a} !~ /755$/) {
3349 $self->change_file_prop($fbat,'svn:executable','*');
3350 } elsif ($m->{mode_b} !~ /755$/ && $m->{mode_a} =~ /755$/) {
3351 $self->change_file_prop($fbat,'svn:executable',undef);
3352 }
3353 my $fh = IO::File->new_tmpfile or croak $!;
3354 if ($m->{mode_b} =~ /^120/) {
3355 print $fh 'link ' or croak $!;
3356 $self->change_file_prop($fbat,'svn:special','*');
3357 } elsif ($m->{mode_a} =~ /^120/ && $m->{mode_b} !~ /^120/) {
3358 $self->change_file_prop($fbat,'svn:special',undef);
3359 }
3360 defined(my $pid = fork) or croak $!;
3361 if (!$pid) {
3362 open STDOUT, '>&', $fh or croak $!;
3363 exec qw/git-cat-file blob/, $m->{sha1_b} or croak $!;
3364 }
3365 waitpid $pid, 0;
3366 croak $? if $?;
3367 $fh->flush == 0 or croak $!;
3368 seek $fh, 0, 0 or croak $!;
3369 my $md5 = Digest::MD5->new;
3371 $md5->addfile($fh) or croak $!;
3372 seek $fh, 0, 0 or croak $!;
3373 my $exp = $md5->hexdigest;
3375 my $pool = SVN::Pool->new;
3376 my $atd = $self->apply_textdelta($fbat, undef, $pool);
3377 my $got = SVN::TxDelta::send_stream($fh, @$atd, $pool);
3378 die "Checksum mismatch\nexpected: $exp\ngot: $got\n" if ($got ne $exp);
3379 $pool->clear;
3380 close $fh or croak $!;
3382}
3383sub D {
3385 my ($self, $m, $q) = @_;
3386 my ($dir, $file) = split_path($m->{file_b});
3387 my $pbat = $self->ensure_path($dir);
3388 print "\tD\t$m->{file_b}\n" unless $q;
3389 $self->delete_entry($m->{file_b}, $pbat);
3390}
3391sub close_edit {
3393 my ($self) = @_;
3394 my ($p,$bat) = ($self->{pool}, $self->{bat});
3395 foreach (sort { $b =~ tr#/#/# <=> $a =~ tr#/#/# } keys %$bat) {
3396 $self->close_directory($bat->{$_}, $p);
3397 }
3398 $self->SUPER::close_edit($p);
3399 $p->clear;
3400}
3401sub abort_edit {
3403 my ($self) = @_;
3404 $self->SUPER::abort_edit($self->{pool});
3405 $self->{pool}->clear;
3406}
3407package Git::SVN::Ra;
3409use vars qw/@ISA $config_dir/;
3410use strict;
3411use warnings;
3412my ($can_do_switch);
3413BEGIN {
3415 # enforce temporary pool usage for some simple functions
3416 my $e;
3417 foreach (qw/get_latest_revnum rev_proplist get_file
3418 check_path get_dir get_uuid get_repos_root/) {
3419 $e .= "sub $_ {
3420 my \$self = shift;
3421 my \$pool = SVN::Pool->new;
3422 my \@ret = \$self->SUPER::$_(\@_,\$pool);
3423 \$pool->clear;
3424 wantarray ? \@ret : \$ret[0]; }\n";
3425 }
3426 eval $e;
3427}
3428sub new {
3430 my ($class, $url) = @_;
3431 SVN::_Core::svn_config_ensure($config_dir, undef);
3432 my ($baton, $callbacks) = SVN::Core::auth_open_helper([
3433 SVN::Client::get_simple_provider(),
3434 SVN::Client::get_ssl_server_trust_file_provider(),
3435 SVN::Client::get_simple_prompt_provider(
3436 \&Git::SVN::Prompt::simple, 2),
3437 SVN::Client::get_ssl_client_cert_prompt_provider(
3438 \&Git::SVN::Prompt::ssl_client_cert, 2),
3439 SVN::Client::get_ssl_client_cert_pw_prompt_provider(
3440 \&Git::SVN::Prompt::ssl_client_cert_pw, 2),
3441 SVN::Client::get_username_provider(),
3442 SVN::Client::get_ssl_server_trust_prompt_provider(
3443 \&Git::SVN::Prompt::ssl_server_trust),
3444 SVN::Client::get_username_prompt_provider(
3445 \&Git::SVN::Prompt::username, 2),
3446 ]);
3447 my $config = SVN::Core::config_get_config($config_dir);
3448 my $self = SVN::Ra->new(url => $url, auth => $baton,
3449 config => $config,
3450 pool => SVN::Pool->new,
3451 auth_provider_callbacks => $callbacks);
3452 $self->{svn_path} = $url;
3453 $self->{repos_root} = $self->get_repos_root;
3454 $self->{svn_path} =~ s#^\Q$self->{repos_root}\E/*##;
3455 bless $self, $class;
3456}
3457sub DESTROY {
3459 my $self = shift;
3460 $self->{pool}->clear if $self->{pool};
3461 $self->SUPER::DESTROY(@_);
3462}
3463sub dup {
3465 my ($self) = @_;
3466 my $dup = SVN::Ra->new(pool => SVN::Pool->new,
3467 map { $_ => $self->{$_} } qw/config url
3468 auth auth_provider_callbacks repos_root svn_path/);
3469 bless $dup, ref $self;
3470}
3471sub get_log {
3473 my ($self, @args) = @_;
3474 my $pool = SVN::Pool->new;
3475 $args[4]-- if $args[4] && ! $::_follow_parent;
3476 splice(@args, 3, 1) if ($SVN::Core::VERSION le '1.2.0');
3477 my $ret = $self->SUPER::get_log(@args, $pool);
3478 $pool->clear;
3479 $ret;
3480}
3481sub get_commit_editor {
3483 my ($self, $msg, $cb, $pool) = @_;
3484 my @lock = $SVN::Core::VERSION ge '1.2.0' ? (undef, 0) : ();
3485 $self->SUPER::get_commit_editor($msg, $cb, @lock, $pool);
3486}
3487sub uuid {
3489 my ($self) = @_;
3490 $self->{uuid} ||= $self->get_uuid;
3491}
3492sub gs_do_update {
3494 my ($self, $rev_a, $rev_b, $path, $recurse, $editor) = @_;
3495 my $pool = SVN::Pool->new;
3496 my $reporter = $self->do_update($rev_b, $path, $recurse,
3497 $editor, $pool);
3498 my @lock = $SVN::Core::VERSION ge '1.2.0' ? (undef) : ();
3499 my $new = ($rev_a == $rev_b);
3500 $reporter->set_path($path, $rev_a, $new, @lock, $pool);
3501 $reporter->finish_report($pool);
3502 $pool->clear;
3503 $editor->{git_commit_ok};
3504}
3505sub gs_do_switch {
3507 my ($self, $rev_a, $rev_b, $path, $recurse, $url_b, $editor) = @_;
3508 my $pool = SVN::Pool->new;
3509 my $reporter = $self->do_switch($rev_b, $path, $recurse,
3510 $url_b, $editor, $pool);
3511 my @lock = $SVN::Core::VERSION ge '1.2.0' ? (undef) : ();
3512 $reporter->set_path($path, $rev_a, 0, @lock, $pool);
3513 $reporter->finish_report($pool);
3514 $pool->clear;
3515 $editor->{git_commit_ok};
3516}
3517sub can_do_switch {
3519 my $self = shift;
3520 unless (defined $can_do_switch) {
3521 my $pool = SVN::Pool->new;
3522 my $rep = eval {
3523 $self->do_switch(1, '', 0, $self->{url},
3524 SVN::Delta::Editor->new, $pool);
3525 };
3526 if ($@) {
3527 $can_do_switch = 0;
3528 } else {
3529 $rep->abort_report($pool);
3530 $can_do_switch = 1;
3531 }
3532 $pool->clear;
3533 }
3534 $can_do_switch;
3535}
3536__END__
3538Data structures:
3540$log_msg hashref as returned by libsvn_log_entry()
3542{
3543 msg => 'whitespace-formatted log entry
3544', # trailing newline is preserved
3545 revision => '8', # integer
3546 date => '2004-02-24T17:01:44.108345Z', # commit date
3547 author => 'committer name'
3548};
3549@mods = array of diff-index line hashes, each element represents one line
3551 of diff-index output
3552diff-index line ($m hash)
3554{
3555 mode_a => first column of diff-index output, no leading ':',
3556 mode_b => second column of diff-index output,
3557 sha1_b => sha1sum of the final blob,
3558 chg => change type [MCRADT],
3559 file_a => original file name of a file (iff chg is 'C' or 'R')
3560 file_b => new/current file name of a file (any chg)
3561}
3562;
3563# retval of read_url_paths{,_all}();
3565$l_map = {
3566 # repository root url
3567 'https://svn.musicpd.org' => {
3568 # repository path # GIT_SVN_ID
3569 'mpd/trunk' => 'trunk',
3570 'mpd/tags/0.11.5' => 'tags/0.11.5',
3571 },
3572}
3573Notes:
3575 I don't trust the each() function on unless I created %hash myself
3576 because the internal iterator may not have started at base.