575d7936dbb130bf245e77418c46c305ff280250
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 $_follow_parent $sha1 $sha1_short $_revision
11 $_cp_remote $_upgrade $_rmdir $_q $_cp_similarity
12 $_find_copies_harder $_l/;
13$AUTHOR = 'Eric Wong <normalperson@yhbt.net>';
14$VERSION = '@@GIT_VERSION@@';
15use Cwd qw/abs_path/;
17$GIT_DIR = abs_path($ENV{GIT_DIR} || '.git');
18$ENV{GIT_DIR} = $GIT_DIR;
19my $LC_ALL = $ENV{LC_ALL};
21$Git::SVN::Log::TZ = $ENV{TZ};
22# make sure the svn binary gives consistent output between locales and TZs:
23$ENV{TZ} = 'UTC';
24$ENV{LC_ALL} = 'C';
25$| = 1; # unbuffer STDOUT
26# properties that we do not log:
28my %SKIP = ( 'svn:wc:ra_dav:version-url' => 1,
29 'svn:special' => 1,
30 'svn:executable' => 1,
31 'svn:entry:committed-rev' => 1,
32 'svn:entry:last-author' => 1,
33 'svn:entry:uuid' => 1,
34 'svn:entry:committed-date' => 1,
35);
36sub fatal (@) { print STDERR @_; exit 1 }
38require SVN::Core; # use()-ing this causes segfaults for me... *shrug*
39require SVN::Ra;
40require SVN::Delta;
41if ($SVN::Core::VERSION lt '1.1.0') {
42 fatal "Need SVN::Core 1.1.0 or better (got $SVN::Core::VERSION)\n";
43}
44push @Git::SVN::Ra::ISA, 'SVN::Ra';
45push @SVN::Git::Editor::ISA, 'SVN::Delta::Editor';
46push @SVN::Git::Fetcher::ISA, 'SVN::Delta::Editor';
47use Carp qw/croak/;
48use IO::File qw//;
49use File::Basename qw/dirname basename/;
50use File::Path qw/mkpath/;
51use Getopt::Long qw/:config gnu_getopt no_ignore_case auto_abbrev pass_through/;
52use IPC::Open3;
53use Memoize;
54use Git;
55memoize('revisions_eq');
56memoize('cmt_metadata');
57memoize('get_commit_time');
58BEGIN {
60 my $s;
61 foreach (qw/command command_oneline command_noisy command_output_pipe
62 command_input_pipe command_close_pipe/) {
63 $s .= "*SVN::Git::Editor::$_ = *SVN::Git::Fetcher::$_ = ".
64 "*Git::SVN::Log::$_ = *Git::SVN::$_ = *$_ = *Git::$_; ";
65 }
66 eval $s;
67}
68my ($SVN);
70my $_optimize_commits = 1 unless $ENV{GIT_SVN_NO_OPTIMIZE_COMMITS};
72$sha1 = qr/[a-f\d]{40}/;
73$sha1_short = qr/[a-f\d]{4,40}/;
74my ($_stdin, $_help, $_edit,
75 $_repack, $_repack_nr, $_repack_flags,
76 $_message, $_file, $_no_metadata,
77 $_template, $_shared, $_no_default_regex, $_no_graft_copy,
78 $_version, $_upgrade, $_authors, $_branch_all_refs, @_opt_m,
79 $_merge, $_strategy, $_dry_run,
80 $_prefix);
81my (@_branch_from, %tree_map, %users);
82my @repo_path_split_cache;
83my %fc_opts = ( 'branch|b=s' => \@_branch_from,
85 'follow-parent|follow' => \$_follow_parent,
86 'branch-all-refs|B' => \$_branch_all_refs,
87 'authors-file|A=s' => \$_authors,
88 'repack:i' => \$_repack,
89 'no-metadata' => \$_no_metadata,
90 'quiet|q' => \$_q,
91 'username=s' => \$Git::SVN::Prompt::_username,
92 'config-dir=s' => \$Git::SVN::Ra::config_dir,
93 'no-auth-cache' => \$Git::SVN::Prompt::_no_auth_cache,
94 'repack-flags|repack-args|repack-opts=s' => \$_repack_flags);
95my ($_trunk, $_tags, $_branches);
97my %multi_opts = ( 'trunk|T=s' => \$_trunk,
98 'tags|t=s' => \$_tags,
99 'branches|b=s' => \$_branches );
100my %init_opts = ( 'template=s' => \$_template, 'shared' => \$_shared );
101my %cmt_opts = ( 'edit|e' => \$_edit,
102 'rmdir' => \$_rmdir,
103 'find-copies-harder' => \$_find_copies_harder,
104 'l=i' => \$_l,
105 'copy-similarity|C=i'=> \$_cp_similarity
106);
107my %cmd = (
109 fetch => [ \&cmd_fetch, "Download new revisions from SVN",
110 { 'revision|r=s' => \$_revision, %fc_opts } ],
111 init => [ \&cmd_init, "Initialize a repo for tracking" .
112 " (requires URL argument)",
113 \%init_opts ],
114 dcommit => [ \&dcommit, 'Commit several diffs to merge with upstream',
115 { 'merge|m|M' => \$_merge,
116 'strategy|s=s' => \$_strategy,
117 'dry-run|n' => \$_dry_run,
118 %cmt_opts, %fc_opts } ],
119 'set-tree' => [ \&commit, "Set an SVN repository to a git tree-ish",
120 { 'stdin|' => \$_stdin, %cmt_opts, %fc_opts, } ],
121 'show-ignore' => [ \&cmd_show_ignore, "Show svn:ignore listings",
122 { 'revision|r=i' => \$_revision } ],
123 rebuild => [ \&cmd_rebuild, "Rebuild git-svn metadata (after git clone)",
124 { 'copy-remote|remote=s' => \$_cp_remote,
125 'upgrade' => \$_upgrade } ],
126 'graft-branches' => [ \&graft_branches,
127 'Detect merges/branches from already imported history',
128 { 'merge-rx|m' => \@_opt_m,
129 'branch|b=s' => \@_branch_from,
130 'branch-all-refs|B' => \$_branch_all_refs,
131 'no-default-regex' => \$_no_default_regex,
132 'no-graft-copy' => \$_no_graft_copy } ],
133 'multi-init' => [ \&cmd_multi_init,
134 'Initialize multiple trees (like git-svnimport)',
135 { %multi_opts, %init_opts,
136 'revision|r=i' => \$_revision,
137 'username=s' => \$Git::SVN::Prompt::_username,
138 'config-dir=s' => \$Git::SVN::Ra::config_dir,
139 'no-auth-cache' => \$Git::SVN::Prompt::_no_auth_cache,
140 'prefix=s' => \$_prefix,
141 } ],
142 'multi-fetch' => [ \&multi_fetch,
143 'Fetch multiple trees (like git-svnimport)',
144 \%fc_opts ],
145 'log' => [ \&Git::SVN::Log::cmd_show_log, 'Show commit logs',
146 { 'limit=i' => \$Git::SVN::Log::limit,
147 'revision|r=s' => \$_revision,
148 'verbose|v' => \$Git::SVN::Log::verbose,
149 'incremental' => \$Git::SVN::Log::incremental,
150 'oneline' => \$Git::SVN::Log::oneline,
151 'show-commit' => \$Git::SVN::Log::show_commit,
152 'non-recursive' => \$Git::SVN::Log::non_recursive,
153 'authors-file|A=s' => \$_authors,
154 'color' => \$Git::SVN::Log::color,
155 'pager=s' => \$Git::SVN::Log::pager,
156 } ],
157 'commit-diff' => [ \&cmd_commit_diff,
158 'Commit a diff between two trees',
159 { 'message|m=s' => \$_message,
160 'file|F=s' => \$_file,
161 'revision|r=s' => \$_revision,
162 %cmt_opts } ],
163);
164my $cmd;
166for (my $i = 0; $i < @ARGV; $i++) {
167 if (defined $cmd{$ARGV[$i]}) {
168 $cmd = $ARGV[$i];
169 splice @ARGV, $i, 1;
170 last;
171 }
172};
173my %opts = %{$cmd{$cmd}->[2]} if (defined $cmd);
175read_repo_config(\%opts);
177my $rv = GetOptions(%opts, 'help|H|h' => \$_help,
178 'version|V' => \$_version,
179 'id|i=s' => \$GIT_SVN);
180exit 1 if (!$rv && $cmd ne 'log');
181set_default_vals();
183usage(0) if $_help;
184version() if $_version;
185usage(1) unless defined $cmd;
186init_vars();
187load_authors() if $_authors;
188load_all_refs() if $_branch_all_refs;
189migration_check() unless $cmd =~ /^(?:init|rebuild|multi-init|commit-diff)$/;
190$cmd{$cmd}->[0]->(@ARGV);
191exit 0;
192####################### primary functions ######################
194sub usage {
195 my $exit = shift || 0;
196 my $fd = $exit ? \*STDERR : \*STDOUT;
197 print $fd <<"";
198git-svn - bidirectional operations between a single Subversion tree and git
199Usage: $0 <command> [options] [arguments]\n
200 print $fd "Available commands:\n" unless $cmd;
202 foreach (sort keys %cmd) {
204 next if $cmd && $cmd ne $_;
205 print $fd ' ',pack('A17',$_),$cmd{$_}->[1],"\n";
206 foreach (keys %{$cmd{$_}->[2]}) {
207 # prints out arguments as they should be passed:
208 my $x = s#[:=]s$## ? '<arg>' : s#[:=]i$## ? '<num>' : '';
209 print $fd ' ' x 21, join(', ', map { length $_ > 1 ?
210 "--$_" : "-$_" }
211 split /\|/,$_)," $x\n";
212 }
213 }
214 print $fd <<"";
215\nGIT_SVN_ID may be set in the environment or via the --id/-i switch to an
216arbitrary identifier if you're tracking multiple SVN branches/repositories in
217one git repository and want to keep them separate. See git-svn(1) for more
218information.
219 exit $exit;
221}
222sub version {
224 print "git-svn version $VERSION (svn $SVN::Core::VERSION)\n";
225 exit 0;
226}
227sub cmd_rebuild {
229 my $url = shift;
230 my $gs = $url ? Git::SVN->init(undef, $url)
231 : eval { Git::SVN->new };
232 $gs ||= Git::SVN->_new;
233 if (!verify_ref($gs->refname.'^0')) {
234 $gs->copy_remote_ref;
235 }
236 if ($_upgrade) {
237 command_noisy('update-ref',$gs->refname, $gs->{id}.'-HEAD');
238 } else {
239 $gs->check_upgrade_needed;
240 }
241 my ($rev_list, $ctx) = command_output_pipe("rev-list", $gs->refname);
243 my $latest;
244 my $svn_uuid;
245 while (<$rev_list>) {
246 chomp;
247 my $c = $_;
248 fatal "Non-SHA1: $c\n" unless $c =~ /^$sha1$/o;
249 my ($url, $rev, $uuid) = cmt_metadata($c);
250 # ignore merges (from set-tree)
252 next if (!defined $rev || !$uuid);
253 # if we merged or otherwise started elsewhere, this is
255 # how we break out of it
256 if ((defined $svn_uuid && ($uuid ne $svn_uuid)) ||
257 ($gs->{url} && $url && ($url ne $gs->{url}))) {
258 next;
259 }
260 unless (defined $latest) {
262 if (!$gs->{url} && !$url) {
263 fatal "SVN repository location required\n";
264 }
265 $gs = Git::SVN->init(undef, $url);
266 $latest = $rev;
267 }
268 $gs->rev_db_set($rev, $c);
269 print "r$rev = $c\n";
270 }
271 command_close_pipe($rev_list, $ctx);
272}
273sub do_git_init_db {
275 unless (-d $ENV{GIT_DIR}) {
276 my @init_db = ('init');
277 push @init_db, "--template=$_template" if defined $_template;
278 push @init_db, "--shared" if defined $_shared;
279 command_noisy(@init_db);
280 }
281}
282sub cmd_init {
284 my $url = shift or die "SVN repository location required " .
285 "as a command-line argument\n";
286 if (my $repo_path = shift) {
287 unless (-d $repo_path) {
288 mkpath([$repo_path]);
289 }
290 chdir $repo_path or croak $!;
291 $ENV{GIT_DIR} = $repo_path . "/.git";
292 }
293 do_git_init_db();
294 Git::SVN->init(undef, $url);
296}
297sub cmd_fetch {
299 fetch_child_id($GIT_SVN, @_);
300}
301sub fetch {
303 check_upgrade_needed();
304 $SVN_URL ||= file_to_s("$GIT_SVN_DIR/info/url");
305 my $ret = fetch_lib(@_);
306 if ($ret->{commit} && !verify_ref('refs/heads/master^0')) {
307 command_noisy(qw(update-ref refs/heads/master),$ret->{commit});
308 }
309 return $ret;
310}
311sub fetch_lib {
313 my (@parents) = @_;
314 $SVN_URL ||= file_to_s("$GIT_SVN_DIR/info/url");
315 $SVN ||= Git::SVN::Ra->new($SVN_URL);
316 my ($last_rev, $last_commit) = svn_grab_base_rev();
317 my ($base, $head) = libsvn_parse_revision($last_rev);
318 if ($base > $head) {
319 return { revision => $last_rev, commit => $last_commit }
320 }
321 my $index = set_index($GIT_SVN_INDEX);
322 # limit ourselves and also fork() since get_log won't release memory
324 # after processing a revision and SVN stuff seems to leak
325 my $inc = 1000;
326 my ($min, $max) = ($base, $head < $base+$inc ? $head : $base+$inc);
327 if (defined $last_commit) {
328 unless (-e $GIT_SVN_INDEX) {
329 command_noisy('read-tree', $last_commit);
330 }
331 my $x = command_oneline('write-tree');
332 my ($y) = (command(qw/cat-file commit/, $last_commit)
333 =~ /^tree ($sha1)/m);
334 if ($y ne $x) {
335 unlink $GIT_SVN_INDEX or croak $!;
336 command_noisy('read-tree', $last_commit);
337 }
338 $x = command_oneline('write-tree');
339 if ($y ne $x) {
340 print STDERR "trees ($last_commit) $y != $x\n",
341 "Something is seriously wrong...\n";
342 }
343 }
344 while (1) {
345 # fork, because using SVN::Pool with get_log() still doesn't
346 # seem to help enough to keep memory usage down.
347 defined(my $pid = fork) or croak $!;
348 if (!$pid) {
349 $SVN::Error::handler = \&libsvn_skip_unknown_revs;
350 # Yes I'm perfectly aware that the fourth argument
352 # below is the limit revisions number. Unfortunately
353 # performance sucks with it enabled, so it's much
354 # faster to fetch revision ranges instead of relying
355 # on the limiter.
356 $SVN->dup->get_log([''], $min, $max, 0, 1, 1,
357 sub {
358 my $log_entry;
359 if ($last_commit) {
360 $log_entry = libsvn_fetch(
361 $last_commit, @_);
362 $last_commit = git_commit(
363 $log_entry,
364 $last_commit,
365 @parents);
366 } else {
367 $log_entry = libsvn_new_tree(@_);
368 $last_commit = git_commit(
369 $log_entry, @parents);
370 }
371 });
372 exit 0;
373 }
374 waitpid $pid, 0;
375 croak $? if $?;
376 ($last_rev, $last_commit) = svn_grab_base_rev();
377 last if ($max >= $head);
378 $min = $max + 1;
379 $max += $inc;
380 $max = $head if ($max > $head);
381 $SVN = Git::SVN::Ra->new($SVN_URL);
382 }
383 restore_index($index);
384 return { revision => $last_rev, commit => $last_commit };
385}
386sub commit {
388 my (@commits) = @_;
389 check_upgrade_needed();
390 if ($_stdin || !@commits) {
391 print "Reading from stdin...\n";
392 @commits = ();
393 while (<STDIN>) {
394 if (/\b($sha1_short)\b/o) {
395 unshift @commits, $1;
396 }
397 }
398 }
399 my @revs;
400 foreach my $c (@commits) {
401 my @tmp = command('rev-parse',$c);
402 if (scalar @tmp == 1) {
403 push @revs, $tmp[0];
404 } elsif (scalar @tmp > 1) {
405 push @revs, reverse(command('rev-list',@tmp));
406 } else {
407 die "Failed to rev-parse $c\n";
408 }
409 }
410 commit_lib(@revs);
411 print "Done committing ",scalar @revs," revisions to SVN\n";
412}
413sub commit_lib {
415 my (@revs) = @_;
416 my ($r_last, $cmt_last) = svn_grab_base_rev();
417 defined $r_last or die "Must have an existing revision to commit\n";
418 my $fetched = fetch();
419 if ($r_last != $fetched->{revision}) {
420 print STDERR "There are new revisions that were fetched ",
421 "and need to be merged (or acknowledged) ",
422 "before committing.\n",
423 "last rev: $r_last\n",
424 " current: $fetched->{revision}\n";
425 exit 1;
426 }
427 my $commit_msg = "$GIT_SVN_DIR/.svn-commit.tmp.$$";
428 my $repo;
430 set_svn_commit_env();
431 foreach my $c (@revs) {
432 my $log_entry = get_commit_entry($c, $commit_msg);
433 # fork for each commit because there's a memory leak I
435 # can't track down... (it's probably in the SVN code)
436 defined(my $pid = open my $fh, '-|') or croak $!;
437 if (!$pid) {
438 my $pool = SVN::Pool->new;
439 my $ed = SVN::Git::Editor->new(
440 { r => $r_last,
441 ra => $SVN->dup,
442 svn_path => $SVN->{svn_path},
443 },
444 $SVN->get_commit_editor(
445 $log_entry->{log},
446 sub {
447 libsvn_commit_cb(
448 @_, $c,
449 $log_entry->{log},
450 $r_last,
451 $cmt_last)
452 }, $pool)
453 );
454 my $mods = $ed->apply_diff($cmt_last, $c);
455 if (@$mods == 0) {
456 print "No changes\nr$r_last = $cmt_last\n";
457 }
458 $pool->clear;
459 exit 0;
460 }
461 my ($r_new, $cmt_new, $no);
462 while (<$fh>) {
463 print $_;
464 chomp;
465 if (/^r(\d+) = ($sha1)$/o) {
466 ($r_new, $cmt_new) = ($1, $2);
467 } elsif ($_ eq 'No changes') {
468 $no = 1;
469 }
470 }
471 close $fh or exit 1;
472 if (! defined $r_new && ! defined $cmt_new) {
473 unless ($no) {
474 die "Failed to parse revision information\n";
475 }
476 } else {
477 ($r_last, $cmt_last) = ($r_new, $cmt_new);
478 }
479 }
480 $ENV{LC_ALL} = 'C';
481 unlink $commit_msg;
482}
483sub dcommit {
485 my $head = shift || 'HEAD';
486 my $gs = "refs/remotes/$GIT_SVN";
487 my @refs = command(qw/rev-list --no-merges/, "$gs..$head");
488 my $last_rev;
489 foreach my $d (reverse @refs) {
490 if (!verify_ref("$d~1")) {
491 die "Commit $d\n",
492 "has no parent commit, and therefore ",
493 "nothing to diff against.\n",
494 "You should be working from a repository ",
495 "originally created by git-svn\n";
496 }
497 unless (defined $last_rev) {
498 (undef, $last_rev, undef) = cmt_metadata("$d~1");
499 unless (defined $last_rev) {
500 die "Unable to extract revision information ",
501 "from commit $d~1\n";
502 }
503 }
504 if ($_dry_run) {
505 print "diff-tree $d~1 $d\n";
506 } else {
507 if (my $r = commit_diff("$d~1", $d, undef, $last_rev)) {
508 $last_rev = $r;
509 } # else: no changes, same $last_rev
510 }
511 }
512 return if $_dry_run;
513 fetch();
514 my @diff = command('diff-tree', 'HEAD', $gs, '--');
515 my @finish;
516 if (@diff) {
517 @finish = qw/rebase/;
518 push @finish, qw/--merge/ if $_merge;
519 push @finish, "--strategy=$_strategy" if $_strategy;
520 print STDERR "W: HEAD and $gs differ, using @finish:\n", @diff;
521 } else {
522 print "No changes between current HEAD and $gs\n",
523 "Resetting to the latest $gs\n";
524 @finish = qw/reset --mixed/;
525 }
526 command_noisy(@finish, $gs);
527}
528sub cmd_show_ignore {
530 my $gs = Git::SVN->new;
531 my $r = (defined $_revision ? $_revision : $gs->ra->get_latest_revnum);
532 $gs->traverse_ignore(\*STDOUT, '', $r);
533}
534sub graft_branches {
536 my $gr_file = "$GIT_DIR/info/grafts";
537 my ($grafts, $comments) = read_grafts($gr_file);
538 my $gr_sha1;
539 if (%$grafts) {
541 # temporarily disable our grafts file to make this idempotent
542 chomp($gr_sha1 = command(qw/hash-object -w/,$gr_file));
543 rename $gr_file, "$gr_file~$gr_sha1" or croak $!;
544 }
545 my $l_map = read_url_paths();
547 my @re = map { qr/$_/is } @_opt_m if @_opt_m;
548 unless ($_no_default_regex) {
549 push @re, (qr/\b(?:merge|merging|merged)\s+with\s+([\w\.\-]+)/i,
550 qr/\b(?:merge|merging|merged)\s+([\w\.\-]+)/i,
551 qr/\b(?:from|of)\s+([\w\.\-]+)/i );
552 }
553 foreach my $u (keys %$l_map) {
554 if (@re) {
555 foreach my $p (keys %{$l_map->{$u}}) {
556 graft_merge_msg($grafts,$l_map,$u,$p,@re);
557 }
558 }
559 unless ($_no_graft_copy) {
560 graft_file_copy_lib($grafts,$l_map,$u);
561 }
562 }
563 graft_tree_joins($grafts);
564 write_grafts($grafts, $comments, $gr_file);
566 unlink "$gr_file~$gr_sha1" if $gr_sha1;
567}
568sub cmd_multi_init {
570 my $url = shift;
571 unless (defined $_trunk || defined $_branches || defined $_tags) {
572 usage(1);
573 }
574 do_git_init_db();
575 $_prefix = '' unless defined $_prefix;
576 if (defined $_trunk) {
577 my $gs_trunk = eval { Git::SVN->new($_prefix . 'trunk') };
578 unless ($gs_trunk) {
579 my $trunk_url = complete_svn_url($url, $_trunk);
580 $gs_trunk = Git::SVN->init($_prefix . 'trunk',
581 $trunk_url);
582 command_noisy('config', 'svn.trunk', $trunk_url);
583 }
584 }
585 my $ra = $url ? Git::SVN::Ra->new($url) : undef;
586 complete_url_ls_init($ra, $_branches, '--branches/-b', $_prefix);
587 complete_url_ls_init($ra, $_tags, '--tags/-t', $_prefix . 'tags/');
588}
589sub multi_fetch {
591 # try to do trunk first, since branches/tags
592 # may be descended from it.
593 if (-e "$GIT_DIR/svn/trunk/info/url") {
594 fetch_child_id('trunk', @_);
595 }
596 rec_fetch('', "$GIT_DIR/svn", @_);
597}
598# this command is special because it requires no metadata
600sub cmd_commit_diff {
601 my ($ta, $tb, $url) = @_;
602 my $usage = "Usage: $0 commit-diff -r<revision> ".
603 "<tree-ish> <tree-ish> [<URL>]\n";
604 fatal($usage) if (!defined $ta || !defined $tb);
605 if (!defined $url) {
606 my $gs = eval { Git::SVN->new };
607 if (!$gs) {
608 fatal("Needed URL or usable git-svn --id in ",
609 "the command-line\n", $usage);
610 }
611 $url = $gs->{url};
612 }
613 unless (defined $_revision) {
614 fatal("-r|--revision is a required argument\n", $usage);
615 }
616 if (defined $_message && defined $_file) {
617 fatal("Both --message/-m and --file/-F specified ",
618 "for the commit message.\n",
619 "I have no idea what you mean\n");
620 }
621 if (defined $_file) {
622 $_message = file_to_s($_file);
623 } else {
624 $_message ||= get_commit_entry($tb)->{log};
625 }
626 my $ra ||= Git::SVN::Ra->new($url);
627 my $r = $_revision;
628 if ($r eq 'HEAD') {
629 $r = $ra->get_latest_revnum;
630 } elsif ($r !~ /^\d+$/) {
631 die "revision argument: $r not understood by git-svn\n";
632 }
633 my $pool = SVN::Pool->new;
634 my %ed_opts = ( r => $r,
635 ra => $ra->dup,
636 svn_path => $ra->{svn_path} );
637 my $ed = SVN::Git::Editor->new(\%ed_opts,
638 $ra->get_commit_editor($_message,
639 sub { print "Committed r$_[0]\n" }),
640 $pool);
641 my $mods = $ed->apply_diff($ta, $tb);
642 if (@$mods == 0) {
643 print "No changes\n$ta == $tb\n";
644 }
645 $pool->clear;
646}
647sub commit_diff_usage {
649 print STDERR "Usage: $0 commit-diff <tree-ish> <tree-ish> [<URL>]\n";
650 exit 1
651}
652sub commit_diff {
654 my $ta = shift or commit_diff_usage();
655 my $tb = shift or commit_diff_usage();
656 if (!eval { $SVN_URL = shift || file_to_s("$GIT_SVN_DIR/info/url") }) {
657 print STDERR "Needed URL or usable git-svn id command-line\n";
658 commit_diff_usage();
659 }
660 my $r = shift;
661 unless (defined $r) {
662 if (defined $_revision) {
663 $r = $_revision
664 } else {
665 die "-r|--revision is a required argument\n";
666 }
667 }
668 if (defined $_message && defined $_file) {
669 print STDERR "Both --message/-m and --file/-F specified ",
670 "for the commit message.\n",
671 "I have no idea what you mean\n";
672 exit 1;
673 }
674 if (defined $_file) {
675 $_message = file_to_s($_file);
676 } else {
677 $_message ||= get_commit_entry($tb,
678 "$GIT_DIR/.svn-commit.tmp.$$")->{log};
679 }
680 $SVN ||= Git::SVN::Ra->new($SVN_URL);
681 if ($r eq 'HEAD') {
682 $r = $SVN->get_latest_revnum;
683 } elsif ($r !~ /^\d+$/) {
684 die "revision argument: $r not understood by git-svn\n";
685 }
686 my $rev_committed;
687 my $pool = SVN::Pool->new;
688 my $ed = SVN::Git::Editor->new({ r => $r,
689 ra => $SVN->dup,
690 svn_path => $SVN->{svn_path}
691 },
692 $SVN->get_commit_editor($_message,
693 sub {
694 $rev_committed = $_[0];
695 print "Committed $_[0]\n";
696 },
697 $pool)
698 );
699 eval {
700 my $mods = $ed->apply_diff($ta, $tb);
701 if (@$mods == 0) {
702 print "No changes\n$ta == $tb\n";
703 }
704 };
705 $pool->clear;
706 fatal "$@\n" if $@;
707 $_message = $_file = undef;
708 return $rev_committed;
709}
710########################### utility functions #########################
712sub fetch_child_id {
714 my $id = shift;
715 print "Fetching $id\n";
716 my $ref = "$GIT_DIR/refs/remotes/$id";
717 defined(my $pid = open my $fh, '-|') or croak $!;
718 if (!$pid) {
719 $GIT_SVN = $ENV{GIT_SVN_ID} = $id;
720 init_vars();
721 fetch(@_);
722 exit 0;
723 }
724 while (<$fh>) {
725 print $_;
726 check_repack() if (/^r\d+ = $sha1/o);
727 }
728 close $fh or croak $?;
729}
730sub rec_fetch {
732 my ($pfx, $p, @args) = @_;
733 my @dir;
734 foreach (sort <$p/*>) {
735 if (-r "$_/info/url") {
736 $pfx .= '/' if $pfx && $pfx !~ m!/$!;
737 my $id = $pfx . basename $_;
738 next if $id eq 'trunk';
739 fetch_child_id($id, @args);
740 } elsif (-d $_) {
741 push @dir, $_;
742 }
743 }
744 foreach (@dir) {
745 my $x = $_;
746 $x =~ s!^\Q$GIT_DIR\E/svn/!!;
747 rec_fetch($x, $_);
748 }
749}
750sub complete_svn_url {
752 my ($url, $path) = @_;
753 $path =~ s#/+$##;
754 $url =~ s#/+$## if $url;
755 if ($path !~ m#^[a-z\+]+://#) {
756 $path = '/' . $path if ($path !~ m#^/#);
757 if (!defined $url || $url !~ m#^[a-z\+]+://#) {
758 fatal("E: '$path' is not a complete URL ",
759 "and a separate URL is not specified\n");
760 }
761 $path = $url . $path;
762 }
763 return $path;
764}
765sub complete_url_ls_init {
767 my ($ra, $path, $switch, $pfx) = @_;
768 unless ($path) {
769 print STDERR "W: $switch not specified\n";
770 return;
771 }
772 $path =~ s#/+$##;
773 if ($path =~ m#^[a-z\+]+://#) {
774 $ra = Git::SVN::Ra->new($path);
775 $path = '';
776 } else {
777 $path =~ s#^/+##;
778 unless ($ra) {
779 fatal("E: '$path' is not a complete URL ",
780 "and a separate URL is not specified\n");
781 }
782 }
783 my $r = defined $_revision ? $_revision : $ra->get_latest_revnum;
784 my ($dirent, undef, undef) = $ra->get_dir($path, $r);
785 my $url = $ra->{url} . (length $path ? "/$path" : '');
786 foreach my $d (sort keys %$dirent) {
787 next if ($dirent->{$d}->kind != $SVN::Node::dir);
788 my $u = "$url/$d";
789 my $id = "$pfx$d";
790 my $gs = eval { Git::SVN->new($id) };
791 # don't try to init already existing refs
792 unless ($gs) {
793 print "init $u => $id\n";
794 Git::SVN->init($id, $u);
795 }
796 }
797 my ($n) = ($switch =~ /^--(\w+)/);
798 command_noisy('config', "svn.$n", $url);
799}
800sub common_prefix {
802 my $paths = shift;
803 my %common;
804 foreach (@$paths) {
805 my @tmp = split m#/#, $_;
806 my $p = '';
807 while (my $x = shift @tmp) {
808 $p .= "/$x";
809 $common{$p} ||= 0;
810 $common{$p}++;
811 }
812 }
813 foreach (sort {length $b <=> length $a} keys %common) {
814 if ($common{$_} == @$paths) {
815 return $_;
816 }
817 }
818 return '';
819}
820# grafts set here are 'stronger' in that they're based on actual tree
822# matches, and won't be deleted from merge-base checking in write_grafts()
823sub graft_tree_joins {
824 my $grafts = shift;
825 map_tree_joins() if (@_branch_from && !%tree_map);
826 return unless %tree_map;
827 git_svn_each(sub {
829 my $i = shift;
830 my @args = (qw/rev-list --pretty=raw/, "refs/remotes/$i");
831 my ($fh, $ctx) = command_output_pipe(@args);
832 while (<$fh>) {
833 next unless /^commit ($sha1)$/o;
834 my $c = $1;
835 my ($t) = (<$fh> =~ /^tree ($sha1)$/o);
836 next unless $tree_map{$t};
837 my $l;
839 do {
840 $l = readline $fh;
841 } until ($l =~ /^committer (?:.+) (\d+) ([\-\+]?\d+)$/);
842 my ($s, $tz) = ($1, $2);
844 if ($tz =~ s/^\+//) {
845 $s += tz_to_s_offset($tz);
846 } elsif ($tz =~ s/^\-//) {
847 $s -= tz_to_s_offset($tz);
848 }
849 my ($url_a, $r_a, $uuid_a) = cmt_metadata($c);
851 foreach my $p (@{$tree_map{$t}}) {
853 next if $p eq $c;
854 my $mb = eval { command('merge-base', $c, $p) };
855 next unless ($@ || $?);
856 if (defined $r_a) {
857 # see if SVN says it's a relative
858 my ($url_b, $r_b, $uuid_b) =
859 cmt_metadata($p);
860 next if (defined $url_b &&
861 defined $url_a &&
862 ($url_a eq $url_b) &&
863 ($uuid_a eq $uuid_b));
864 if ($uuid_a eq $uuid_b) {
865 if ($r_b < $r_a) {
866 $grafts->{$c}->{$p} = 2;
867 next;
868 } elsif ($r_b > $r_a) {
869 $grafts->{$p}->{$c} = 2;
870 next;
871 }
872 }
873 }
874 my $ct = get_commit_time($p);
875 if ($ct < $s) {
876 $grafts->{$c}->{$p} = 2;
877 } elsif ($ct > $s) {
878 $grafts->{$p}->{$c} = 2;
879 }
880 # what should we do when $ct == $s ?
881 }
882 }
883 command_close_pipe($fh, $ctx);
884 });
885}
886sub graft_file_copy_lib {
888 my ($grafts, $l_map, $u) = @_;
889 my $tree_paths = $l_map->{$u};
890 my $pfx = common_prefix([keys %$tree_paths]);
891 my ($repo, $path) = repo_path_split($u.$pfx);
892 $SVN = Git::SVN::Ra->new($repo);
893 my ($base, $head) = libsvn_parse_revision();
895 my $inc = 1000;
896 my ($min, $max) = ($base, $head < $base+$inc ? $head : $base+$inc);
897 my $eh = $SVN::Error::handler;
898 $SVN::Error::handler = \&libsvn_skip_unknown_revs;
899 while (1) {
900 $SVN->dup->get_log([$path], $min, $max, 0, 2, 1,
901 sub {
902 libsvn_graft_file_copies($grafts, $tree_paths,
903 $path, @_);
904 });
905 last if ($max >= $head);
906 $min = $max + 1;
907 $max += $inc;
908 $max = $head if ($max > $head);
909 }
910 $SVN::Error::handler = $eh;
911}
912sub process_merge_msg_matches {
914 my ($grafts, $l_map, $u, $p, $c, @matches) = @_;
915 my (@strong, @weak);
916 foreach (@matches) {
917 # merging with ourselves is not interesting
918 next if $_ eq $p;
919 if ($l_map->{$u}->{$_}) {
920 push @strong, $_;
921 } else {
922 push @weak, $_;
923 }
924 }
925 foreach my $w (@weak) {
926 last if @strong;
927 # no exact match, use branch name as regexp.
928 my $re = qr/\Q$w\E/i;
929 foreach (keys %{$l_map->{$u}}) {
930 if (/$re/) {
931 push @strong, $l_map->{$u}->{$_};
932 last;
933 }
934 }
935 last if @strong;
936 $w = basename($w);
937 $re = qr/\Q$w\E/i;
938 foreach (keys %{$l_map->{$u}}) {
939 if (/$re/) {
940 push @strong, $l_map->{$u}->{$_};
941 last;
942 }
943 }
944 }
945 my ($rev) = ($c->{m} =~ /^git-svn-id:\s(?:\S+?)\@(\d+)
946 \s(?:[a-f\d\-]+)$/xsm);
947 unless (defined $rev) {
948 ($rev) = ($c->{m} =~/^git-svn-id:\s(\d+)
949 \@(?:[a-f\d\-]+)/xsm);
950 return unless defined $rev;
951 }
952 foreach my $m (@strong) {
953 my ($r0, $s0) = find_rev_before($rev, $m, 1);
954 $grafts->{$c->{c}}->{$s0} = 1 if defined $s0;
955 }
956}
957sub graft_merge_msg {
959 my ($grafts, $l_map, $u, $p, @re) = @_;
960 my $x = $l_map->{$u}->{$p};
962 my $rl = rev_list_raw("refs/remotes/$x");
963 while (my $c = next_rev_list_entry($rl)) {
964 foreach my $re (@re) {
965 my (@br) = ($c->{m} =~ /$re/g);
966 next unless @br;
967 process_merge_msg_matches($grafts,$l_map,$u,$p,$c,@br);
968 }
969 }
970}
971sub verify_ref {
973 my ($ref) = @_;
974 eval { command_oneline([ 'rev-parse', '--verify', $ref ],
975 { STDERR => 0 }); };
976}
977sub repo_path_split {
979 my $full_url = shift;
980 $full_url =~ s#/+$##;
981 foreach (@repo_path_split_cache) {
983 if ($full_url =~ s#$_##) {
984 my $u = $1;
985 $full_url =~ s#^/+##;
986 return ($u, $full_url);
987 }
988 }
989 my $tmp = Git::SVN::Ra->new($full_url);
990 return ($tmp->{repos_root}, $tmp->{svn_path});
991}
992sub setup_git_svn {
994 defined $SVN_URL or croak "SVN repository location required\n";
995 unless (-d $GIT_DIR) {
996 croak "GIT_DIR=$GIT_DIR does not exist!\n";
997 }
998 mkpath([$GIT_SVN_DIR]);
999 mkpath(["$GIT_SVN_DIR/info"]);
1000 open my $fh, '>>',$REVDB or croak $!;
1001 close $fh;
1002 s_to_file($SVN_URL,"$GIT_SVN_DIR/info/url");
1003}
1005sub get_tree_from_treeish {
1007 my ($treeish) = @_;
1008 # $treeish can be a symbolic ref, too:
1009 my $type = command_oneline(qw/cat-file -t/, $treeish);
1010 my $expected;
1011 while ($type eq 'tag') {
1012 ($treeish, $type) = command(qw/cat-file tag/, $treeish);
1013 }
1014 if ($type eq 'commit') {
1015 $expected = (grep /^tree /, command(qw/cat-file commit/,
1016 $treeish))[0];
1017 ($expected) = ($expected =~ /^tree ($sha1)$/o);
1018 die "Unable to get tree from $treeish\n" unless $expected;
1019 } elsif ($type eq 'tree') {
1020 $expected = $treeish;
1021 } else {
1022 die "$treeish is a $type, expected tree, tag or commit\n";
1023 }
1024 return $expected;
1025}
1026sub get_diff {
1028 my ($from, $treeish) = @_;
1029 print "diff-tree $from $treeish\n";
1030 my @diff_tree = qw(diff-tree -z -r);
1031 if ($_cp_similarity) {
1032 push @diff_tree, "-C$_cp_similarity";
1033 } else {
1034 push @diff_tree, '-C';
1035 }
1036 push @diff_tree, '--find-copies-harder' if $_find_copies_harder;
1037 push @diff_tree, "-l$_l" if defined $_l;
1038 push @diff_tree, $from, $treeish;
1039 my ($diff_fh, $ctx) = command_output_pipe(@diff_tree);
1040 local $/ = "\0";
1041 my $state = 'meta';
1042 my @mods;
1043 while (<$diff_fh>) {
1044 chomp $_; # this gets rid of the trailing "\0"
1045 if ($state eq 'meta' && /^:(\d{6})\s(\d{6})\s
1046 $sha1\s($sha1)\s([MTCRAD])\d*$/xo) {
1047 push @mods, { mode_a => $1, mode_b => $2,
1048 sha1_b => $3, chg => $4 };
1049 if ($4 =~ /^(?:C|R)$/) {
1050 $state = 'file_a';
1051 } else {
1052 $state = 'file_b';
1053 }
1054 } elsif ($state eq 'file_a') {
1055 my $x = $mods[$#mods] or croak "Empty array\n";
1056 if ($x->{chg} !~ /^(?:C|R)$/) {
1057 croak "Error parsing $_, $x->{chg}\n";
1058 }
1059 $x->{file_a} = $_;
1060 $state = 'file_b';
1061 } elsif ($state eq 'file_b') {
1062 my $x = $mods[$#mods] or croak "Empty array\n";
1063 if (exists $x->{file_a} && $x->{chg} !~ /^(?:C|R)$/) {
1064 croak "Error parsing $_, $x->{chg}\n";
1065 }
1066 if (!exists $x->{file_a} && $x->{chg} =~ /^(?:C|R)$/) {
1067 croak "Error parsing $_, $x->{chg}\n";
1068 }
1069 $x->{file_b} = $_;
1070 $state = 'meta';
1071 } else {
1072 croak "Error parsing $_\n";
1073 }
1074 }
1075 command_close_pipe($diff_fh, $ctx);
1076 return \@mods;
1077}
1078sub get_commit_entry {
1080 my ($treeish) = shift;
1081 my %log_entry = ( log => '', tree => get_tree_from_treeish($treeish) );
1082 my $commit_editmsg = "$ENV{GIT_DIR}/COMMIT_EDITMSG";
1083 my $commit_msg = "$ENV{GIT_DIR}/COMMIT_MSG";
1084 open my $log_fh, '>', $commit_editmsg or croak $!;
1085 my $type = command_oneline(qw/cat-file -t/, $treeish);
1087 if ($type eq 'commit' || $type eq 'tag') {
1088 my ($msg_fh, $ctx) = command_output_pipe('cat-file',
1089 $type, $treeish);
1090 my $in_msg = 0;
1091 while (<$msg_fh>) {
1092 if (!$in_msg) {
1093 $in_msg = 1 if (/^\s*$/);
1094 } elsif (/^git-svn-id: /) {
1095 # skip this for now, we regenerate the
1096 # correct one on re-fetch anyways
1097 # TODO: set *:merge properties or like...
1098 } else {
1099 print $log_fh $_ or croak $!;
1100 }
1101 }
1102 command_close_pipe($msg_fh, $ctx);
1103 }
1104 close $log_fh or croak $!;
1105 if ($_edit || ($type eq 'tree')) {
1107 my $editor = $ENV{VISUAL} || $ENV{EDITOR} || 'vi';
1108 # TODO: strip out spaces, comments, like git-commit.sh
1109 system($editor, $commit_editmsg);
1110 }
1111 rename $commit_editmsg, $commit_msg or croak $!;
1112 open $log_fh, '<', $commit_msg or croak $!;
1113 { local $/; chomp($log_entry{log} = <$log_fh>); }
1114 close $log_fh or croak $!;
1115 unlink $commit_msg;
1116 \%log_entry;
1117}
1118sub set_svn_commit_env {
1120 if (defined $LC_ALL) {
1121 $ENV{LC_ALL} = $LC_ALL;
1122 } else {
1123 delete $ENV{LC_ALL};
1124 }
1125}
1126sub rev_list_raw {
1128 my ($fh, $c) = command_output_pipe(qw/rev-list --pretty=raw/, @_);
1129 return { fh => $fh, ctx => $c, t => { } };
1130}
1131sub next_rev_list_entry {
1133 my $rl = shift;
1134 my $fh = $rl->{fh};
1135 my $x = $rl->{t};
1136 while (<$fh>) {
1137 if (/^commit ($sha1)$/o) {
1138 if ($x->{c}) {
1139 $rl->{t} = { c => $1 };
1140 return $x;
1141 } else {
1142 $x->{c} = $1;
1143 }
1144 } elsif (/^parent ($sha1)$/o) {
1145 $x->{p}->{$1} = 1;
1146 } elsif (s/^ //) {
1147 $x->{m} ||= '';
1148 $x->{m} .= $_;
1149 }
1150 }
1151 command_close_pipe($fh, $rl->{ctx});
1152 return ($x != $rl->{t}) ? $x : undef;
1153}
1154sub s_to_file {
1156 my ($str, $file, $mode) = @_;
1157 open my $fd,'>',$file or croak $!;
1158 print $fd $str,"\n" or croak $!;
1159 close $fd or croak $!;
1160 chmod ($mode &~ umask, $file) if (defined $mode);
1161}
1162sub file_to_s {
1164 my $file = shift;
1165 open my $fd,'<',$file or croak "$!: file: $file\n";
1166 local $/;
1167 my $ret = <$fd>;
1168 close $fd or croak $!;
1169 $ret =~ s/\s*$//s;
1170 return $ret;
1171}
1172sub assert_revision_unknown {
1174 my $r = shift;
1175 if (my $c = revdb_get($REVDB, $r)) {
1176 croak "$r = $c already exists! Why are we refetching it?";
1177 }
1178}
1179sub git_commit {
1181 my ($log_entry, @parents) = @_;
1182 assert_revision_unknown($log_entry->{revision});
1183 map_tree_joins() if (@_branch_from && !%tree_map);
1184 my (@tmp_parents, @exec_parents, %seen_parent);
1186 if (my $lparents = $log_entry->{parents}) {
1187 @tmp_parents = @$lparents
1188 }
1189 # commit parents can be conditionally bound to a particular
1190 # svn revision via: "svn_revno=commit_sha1", filter them out here:
1191 foreach my $p (@parents) {
1192 next unless defined $p;
1193 if ($p =~ /^(\d+)=($sha1_short)$/o) {
1194 if ($1 == $log_entry->{revision}) {
1195 push @tmp_parents, $2;
1196 }
1197 } else {
1198 push @tmp_parents, $p if $p =~ /$sha1_short/o;
1199 }
1200 }
1201 my $tree = $log_entry->{tree};
1202 if (!defined $tree) {
1203 my $index = set_index($GIT_SVN_INDEX);
1204 $tree = command_oneline('write-tree');
1205 croak $? if $?;
1206 restore_index($index);
1207 }
1208 # just in case we clobber the existing ref, we still want that ref
1209 # as our parent:
1210 if (my $cur = verify_ref("refs/remotes/$GIT_SVN^0")) {
1211 chomp $cur;
1212 push @tmp_parents, $cur;
1213 }
1214 if (exists $tree_map{$tree}) {
1216 foreach my $p (@{$tree_map{$tree}}) {
1217 my $skip;
1218 foreach (@tmp_parents) {
1219 # see if a common parent is found
1220 my $mb = eval { command('merge-base', $_, $p) };
1221 next if ($@ || $?);
1222 $skip = 1;
1223 last;
1224 }
1225 next if $skip;
1226 my ($url_p, $r_p, $uuid_p) = cmt_metadata($p);
1227 next if (($SVN->uuid eq $uuid_p) &&
1228 ($log_entry->{revision} > $r_p));
1229 next if (defined $url_p && defined $SVN_URL &&
1230 ($SVN->uuid eq $uuid_p) &&
1231 ($url_p eq $SVN_URL));
1232 push @tmp_parents, $p;
1233 }
1234 }
1235 foreach (@tmp_parents) {
1236 next if $seen_parent{$_};
1237 $seen_parent{$_} = 1;
1238 push @exec_parents, $_;
1239 # MAXPARENT is defined to 16 in commit-tree.c:
1240 last if @exec_parents > 16;
1241 }
1242 set_commit_env($log_entry);
1244 my @exec = ('git-commit-tree', $tree);
1245 push @exec, '-p', $_ foreach @exec_parents;
1246 defined(my $pid = open3(my $msg_fh, my $out_fh, '>&STDERR', @exec))
1247 or croak $!;
1248 print $msg_fh $log_entry->{log} or croak $!;
1249 unless ($_no_metadata) {
1250 print $msg_fh "\ngit-svn-id: $SVN_URL\@$log_entry->{revision} ",
1251 $SVN->uuid,"\n" or croak $!;
1252 }
1253 $msg_fh->flush == 0 or croak $!;
1254 close $msg_fh or croak $!;
1255 chomp(my $commit = do { local $/; <$out_fh> });
1256 close $out_fh or croak $!;
1257 waitpid $pid, 0;
1258 croak $? if $?;
1259 if ($commit !~ /^$sha1$/o) {
1260 die "Failed to commit, invalid sha1: $commit\n";
1261 }
1262 command_noisy('update-ref',"refs/remotes/$GIT_SVN",$commit);
1263 revdb_set($REVDB, $log_entry->{revision}, $commit);
1264 # this output is read via pipe, do not change:
1266 print "r$log_entry->{revision} = $commit\n";
1267 return $commit;
1268}
1269sub check_repack {
1271 if ($_repack && (--$_repack_nr == 0)) {
1272 $_repack_nr = $_repack;
1273 # repack doesn't use any arguments with spaces in them, does it?
1274 command_noisy('repack', split(/\s+/, $_repack_flags));
1275 }
1276}
1277sub set_commit_env {
1279 my ($log_entry) = @_;
1280 my $author = $log_entry->{author};
1281 if (!defined $author || length $author == 0) {
1282 $author = '(no author)';
1283 }
1284 my ($name,$email) = defined $users{$author} ? @{$users{$author}}
1285 : ($author,$author . '@' . $SVN->uuid);
1286 $ENV{GIT_AUTHOR_NAME} = $ENV{GIT_COMMITTER_NAME} = $name;
1287 $ENV{GIT_AUTHOR_EMAIL} = $ENV{GIT_COMMITTER_EMAIL} = $email;
1288 $ENV{GIT_AUTHOR_DATE} = $ENV{GIT_COMMITTER_DATE} = $log_entry->{date};
1289}
1290sub check_upgrade_needed {
1292 if (!-r $REVDB) {
1293 -d $GIT_SVN_DIR or mkpath([$GIT_SVN_DIR]);
1294 open my $fh, '>>',$REVDB or croak $!;
1295 close $fh;
1296 }
1297 return unless eval {
1298 command([qw/rev-parse --verify/,"$GIT_SVN-HEAD^0"],
1299 {STDERR => 0});
1300 };
1301 my $head = eval { command('rev-parse',"refs/remotes/$GIT_SVN") };
1302 if ($@ || !$head) {
1303 print STDERR "Please run: $0 rebuild --upgrade\n";
1304 exit 1;
1305 }
1306}
1307# fills %tree_map with a reverse mapping of trees to commits. Useful
1309# for finding parents to commit on.
1310sub map_tree_joins {
1311 my %seen;
1312 foreach my $br (@_branch_from) {
1313 my $pipe = command_output_pipe(qw/rev-list
1314 --topo-order --pretty=raw/, $br);
1315 while (<$pipe>) {
1316 if (/^commit ($sha1)$/o) {
1317 my $commit = $1;
1318 # if we've seen a commit,
1320 # we've seen its parents
1321 last if $seen{$commit};
1322 my ($tree) = (<$pipe> =~ /^tree ($sha1)$/o);
1323 unless (defined $tree) {
1324 die "Failed to parse commit $commit\n";
1325 }
1326 push @{$tree_map{$tree}}, $commit;
1327 $seen{$commit} = 1;
1328 }
1329 }
1330 close $pipe;
1331 }
1332}
1333sub load_all_refs {
1335 if (@_branch_from) {
1336 print STDERR '--branch|-b parameters are ignored when ',
1337 "--branch-all-refs|-B is passed\n";
1338 }
1339 # don't worry about rev-list on non-commit objects/tags,
1341 # it shouldn't blow up if a ref is a blob or tree...
1342 @_branch_from = command(qw/rev-parse --symbolic --all/);
1343}
1344# '<svn username> = real-name <email address>' mapping based on git-svnimport:
1346sub load_authors {
1347 open my $authors, '<', $_authors or die "Can't open $_authors $!\n";
1348 my $log = $cmd eq 'log';
1349 while (<$authors>) {
1350 chomp;
1351 next unless /^(\S+?|\(no author\))\s*=\s*(.+?)\s*<(.+)>\s*$/;
1352 my ($user, $name, $email) = ($1, $2, $3);
1353 if ($log) {
1354 $Git::SVN::Log::rusers{"$name <$email>"} = $user;
1355 } else {
1356 $users{$user} = [$name, $email];
1357 }
1358 }
1359 close $authors or croak $!;
1360}
1361sub git_svn_each {
1363 my $sub = shift;
1364 foreach (command(qw/rev-parse --symbolic --all/)) {
1365 next unless s#^refs/remotes/##;
1366 chomp $_;
1367 next unless -f "$GIT_DIR/svn/$_/info/url";
1368 &$sub($_);
1369 }
1370}
1371sub migrate_revdb {
1373 git_svn_each(sub {
1374 my $id = shift;
1375 defined(my $pid = fork) or croak $!;
1376 if (!$pid) {
1377 $GIT_SVN = $ENV{GIT_SVN_ID} = $id;
1378 init_vars();
1379 exit 0 if -r $REVDB;
1380 print "Upgrading svn => git mapping...\n";
1381 -d $GIT_SVN_DIR or mkpath([$GIT_SVN_DIR]);
1382 open my $fh, '>>',$REVDB or croak $!;
1383 close $fh;
1384 rebuild();
1385 print "Done upgrading. You may now delete the ",
1386 "deprecated $GIT_SVN_DIR/revs directory\n";
1387 exit 0;
1388 }
1389 waitpid $pid, 0;
1390 croak $? if $?;
1391 });
1392}
1393sub migration_check {
1395 migrate_revdb() unless (-e $REVDB);
1396 return if (-d "$GIT_DIR/svn" || !-d $GIT_DIR);
1397 print "Upgrading repository...\n";
1398 unless (-d "$GIT_DIR/svn") {
1399 mkdir "$GIT_DIR/svn" or croak $!;
1400 }
1401 print "Data from a previous version of git-svn exists, but\n\t",
1402 "$GIT_SVN_DIR\n\t(required for this version ",
1403 "($VERSION) of git-svn) does not.\n";
1404 foreach my $x (command(qw/rev-parse --symbolic --all/)) {
1406 next unless $x =~ s#^refs/remotes/##;
1407 chomp $x;
1408 next unless -f "$GIT_DIR/$x/info/url";
1409 my $u = eval { file_to_s("$GIT_DIR/$x/info/url") };
1410 next unless $u;
1411 my $dn = dirname("$GIT_DIR/svn/$x");
1412 mkpath([$dn]) unless -d $dn;
1413 rename "$GIT_DIR/$x", "$GIT_DIR/svn/$x" or croak "$!: $x";
1414 }
1415 migrate_revdb() if (-d $GIT_SVN_DIR && !-w $REVDB);
1416 print "Done upgrading.\n";
1417}
1418sub find_rev_before {
1420 my ($r, $id, $eq_ok) = @_;
1421 my $f = "$GIT_DIR/svn/$id/.rev_db";
1422 return (undef,undef) unless -r $f;
1423 --$r unless $eq_ok;
1424 while ($r > 0) {
1425 if (my $c = revdb_get($f, $r)) {
1426 return ($r, $c);
1427 }
1428 --$r;
1429 }
1430 return (undef, undef);
1431}
1432sub init_vars {
1434 $GIT_SVN ||= $ENV{GIT_SVN_ID} || 'git-svn';
1435 $Git::SVN::default = $GIT_SVN;
1436 $GIT_SVN_DIR = "$GIT_DIR/svn/$GIT_SVN";
1437 $REVDB = "$GIT_SVN_DIR/.rev_db";
1438 $GIT_SVN_INDEX = "$GIT_SVN_DIR/index";
1439 $SVN_URL = undef;
1440 %tree_map = ();
1441}
1442# convert GetOpt::Long specs for use by git-config
1444sub read_repo_config {
1445 return unless -d $GIT_DIR;
1446 my $opts = shift;
1447 foreach my $o (keys %$opts) {
1448 my $v = $opts->{$o};
1449 my ($key) = ($o =~ /^([a-z\-]+)/);
1450 $key =~ s/-//g;
1451 my $arg = 'git-config';
1452 $arg .= ' --int' if ($o =~ /[:=]i$/);
1453 $arg .= ' --bool' if ($o !~ /[:=][sfi]$/);
1454 if (ref $v eq 'ARRAY') {
1455 chomp(my @tmp = `$arg --get-all svn.$key`);
1456 @$v = @tmp if @tmp;
1457 } else {
1458 chomp(my $tmp = `$arg --get svn.$key`);
1459 if ($tmp && !($arg =~ / --bool/ && $tmp eq 'false')) {
1460 $$v = $tmp;
1461 }
1462 }
1463 }
1464}
1465sub set_default_vals {
1467 if (defined $_repack) {
1468 $_repack = 1000 if ($_repack <= 0);
1469 $_repack_nr = $_repack;
1470 $_repack_flags ||= '-d';
1471 }
1472}
1473sub read_grafts {
1475 my $gr_file = shift;
1476 my ($grafts, $comments) = ({}, {});
1477 if (open my $fh, '<', $gr_file) {
1478 my @tmp;
1479 while (<$fh>) {
1480 if (/^($sha1)\s+/) {
1481 my $c = $1;
1482 if (@tmp) {
1483 @{$comments->{$c}} = @tmp;
1484 @tmp = ();
1485 }
1486 foreach my $p (split /\s+/, $_) {
1487 $grafts->{$c}->{$p} = 1;
1488 }
1489 } else {
1490 push @tmp, $_;
1491 }
1492 }
1493 close $fh or croak $!;
1494 @{$comments->{'END'}} = @tmp if @tmp;
1495 }
1496 return ($grafts, $comments);
1497}
1498sub write_grafts {
1500 my ($grafts, $comments, $gr_file) = @_;
1501 open my $fh, '>', $gr_file or croak $!;
1503 foreach my $c (sort keys %$grafts) {
1504 if ($comments->{$c}) {
1505 print $fh $_ foreach @{$comments->{$c}};
1506 }
1507 my $p = $grafts->{$c};
1508 my %x; # real parents
1509 delete $p->{$c}; # commits are not self-reproducing...
1510 my $ch = command_output_pipe(qw/cat-file commit/, $c);
1511 while (<$ch>) {
1512 if (/^parent ($sha1)/) {
1513 $x{$1} = $p->{$1} = 1;
1514 } else {
1515 last unless /^\S/;
1516 }
1517 }
1518 close $ch; # breaking the pipe
1519 # if real parents are the only ones in the grafts, drop it
1521 next if join(' ',sort keys %$p) eq join(' ',sort keys %x);
1522 my (@ip, @jp, $mb);
1524 my %del = %x;
1525 @ip = @jp = keys %$p;
1526 foreach my $i (@ip) {
1527 next if $del{$i} || $p->{$i} == 2;
1528 foreach my $j (@jp) {
1529 next if $i eq $j || $del{$j} || $p->{$j} == 2;
1530 $mb = eval { command('merge-base', $i, $j) };
1531 next unless $mb;
1532 chomp $mb;
1533 next if $x{$mb};
1534 if ($mb eq $j) {
1535 delete $p->{$i};
1536 $del{$i} = 1;
1537 } elsif ($mb eq $i) {
1538 delete $p->{$j};
1539 $del{$j} = 1;
1540 }
1541 }
1542 }
1543 # if real parents are the only ones in the grafts, drop it
1545 next if join(' ',sort keys %$p) eq join(' ',sort keys %x);
1546 print $fh $c, ' ', join(' ', sort keys %$p),"\n";
1548 }
1549 if ($comments->{'END'}) {
1550 print $fh $_ foreach @{$comments->{'END'}};
1551 }
1552 close $fh or croak $!;
1553}
1554sub read_url_paths_all {
1556 my ($l_map, $pfx, $p) = @_;
1557 my @dir;
1558 foreach (<$p/*>) {
1559 if (-r "$_/info/url") {
1560 $pfx .= '/' if $pfx && $pfx !~ m!/$!;
1561 my $id = $pfx . basename $_;
1562 my $url = file_to_s("$_/info/url");
1563 my ($u, $p) = repo_path_split($url);
1564 $l_map->{$u}->{$p} = $id;
1565 } elsif (-d $_) {
1566 push @dir, $_;
1567 }
1568 }
1569 foreach (@dir) {
1570 my $x = $_;
1571 $x =~ s!^\Q$GIT_DIR\E/svn/!!o;
1572 read_url_paths_all($l_map, $x, $_);
1573 }
1574}
1575# this one only gets ids that have been imported, not new ones
1577sub read_url_paths {
1578 my $l_map = {};
1579 git_svn_each(sub { my $x = shift;
1580 my $url = file_to_s("$GIT_DIR/svn/$x/info/url");
1581 my ($u, $p) = repo_path_split($url);
1582 $l_map->{$u}->{$p} = $x;
1583 });
1584 return $l_map;
1585}
1586sub extract_metadata {
1588 my $id = shift or return (undef, undef, undef);
1589 my ($url, $rev, $uuid) = ($id =~ /^git-svn-id:\s(\S+?)\@(\d+)
1590 \s([a-f\d\-]+)$/x);
1591 if (!defined $rev || !$uuid || !$url) {
1592 # some of the original repositories I made had
1593 # identifiers like this:
1594 ($rev, $uuid) = ($id =~/^git-svn-id:\s(\d+)\@([a-f\d\-]+)/);
1595 }
1596 return ($url, $rev, $uuid);
1597}
1598sub cmt_metadata {
1600 return extract_metadata((grep(/^git-svn-id: /,
1601 command(qw/cat-file commit/, shift)))[-1]);
1602}
1603sub get_commit_time {
1605 my $cmt = shift;
1606 my $fh = command_output_pipe(qw/rev-list --pretty=raw -n1/, $cmt);
1607 while (<$fh>) {
1608 /^committer\s(?:.+) (\d+) ([\-\+]?\d+)$/ or next;
1609 my ($s, $tz) = ($1, $2);
1610 if ($tz =~ s/^\+//) {
1611 $s += tz_to_s_offset($tz);
1612 } elsif ($tz =~ s/^\-//) {
1613 $s -= tz_to_s_offset($tz);
1614 }
1615 close $fh;
1616 return $s;
1617 }
1618 die "Can't get commit time for commit: $cmt\n";
1619}
1620sub tz_to_s_offset {
1622 my ($tz) = @_;
1623 $tz =~ s/(\d\d)$//;
1624 return ($1 * 60) + ($tz * 3600);
1625}
1626package Git::SVN;
1628use strict;
1629use warnings;
1630use vars qw/$default/;
1631use Carp qw/croak/;
1632use File::Path qw/mkpath/;
1633use IPC::Open3;
1634# properties that we do not log:
1636my %SKIP_PROP;
1637BEGIN {
1638 %SKIP_PROP = map { $_ => 1 } qw/svn:wc:ra_dav:version-url
1639 svn:special svn:executable
1640 svn:entry:committed-rev
1641 svn:entry:last-author
1642 svn:entry:uuid
1643 svn:entry:committed-date/;
1644}
1645sub init {
1647 my ($class, $id, $url) = @_;
1648 my $self = _new($class, $id);
1649 mkpath(["$self->{dir}/info"]);
1650 if (defined $url) {
1651 $url =~ s!/+$!!; # strip trailing slash
1652 ::s_to_file($url, "$self->{dir}/info/url");
1653 }
1654 $self->{url} = $url;
1655 open my $fh, '>>', $self->{db_path} or croak $!;
1656 close $fh or croak $!;
1657 $self;
1658}
1659sub new {
1661 my ($class, $id) = @_;
1662 my $self = _new($class, $id);
1663 $self->{url} = ::file_to_s("$self->{dir}/info/url");
1664 $self;
1665}
1666sub refname { "refs/remotes/$_[0]->{id}" }
1668sub ra {
1670 my ($self) = shift;
1671 $self->{ra} ||= Git::SVN::Ra->new($self->{url});
1672}
1673sub copy_remote_ref {
1675 my ($self) = @_;
1676 my $origin = $::_cp_remote ? $::_cp_remote : 'origin';
1677 my $ref = $self->refname;
1678 if (command('ls-remote', $origin, $ref)) {
1679 command_noisy('fetch', $origin, "$ref:$ref");
1680 } elsif ($::_cp_remote && !$::_upgrade) {
1681 die "Unable to find remote reference: $ref on $origin\n";
1682 }
1683}
1684sub traverse_ignore {
1686 my ($self, $fh, $path, $r) = @_;
1687 $path =~ s#^/+##g;
1688 my ($dirent, undef, $props) = $self->ra->get_dir($path, $r);
1689 my $p = $path;
1690 $p =~ s#^\Q$self->{ra}->{svn_path}\E/##;
1691 print $fh length $p ? "\n# $p\n" : "\n# /\n";
1692 if (my $s = $props->{'svn:ignore'}) {
1693 $s =~ s/[\r\n]+/\n/g;
1694 chomp $s;
1695 if (length $p == 0) {
1696 $s =~ s#\n#\n/$p#g;
1697 print $fh "/$s\n";
1698 } else {
1699 $s =~ s#\n#\n/$p/#g;
1700 print $fh "/$p/$s\n";
1701 }
1702 }
1703 foreach (sort keys %$dirent) {
1704 next if $dirent->{$_}->kind != $SVN::Node::dir;
1705 $self->traverse_ignore($fh, "$path/$_", $r);
1706 }
1707}
1708# returns the newest SVN revision number and newest commit SHA1
1710sub last_rev_commit {
1711 my ($self) = @_;
1712 if (defined $self->{last_rev} && defined $self->{last_commit}) {
1713 return ($self->{last_rev}, $self->{last_commit});
1714 }
1715 my $c = ::verify_ref($self->refname.'^0');
1716 if (defined $c && length $c) {
1717 my $rev = (::cmt_metadata($c))[1];
1718 if (defined $rev) {
1719 ($self->{last_rev}, $self->{last_commit}) = ($rev, $c);
1720 return ($rev, $c);
1721 }
1722 }
1723 my $offset = -41; # from tail
1724 my $rl;
1725 open my $fh, '<', $self->{db_path} or
1726 croak "$self->{db_path} not readable: $!\n";
1727 seek $fh, $offset, 2;
1728 $rl = readline $fh;
1729 defined $rl or return (undef, undef);
1730 chomp $rl;
1731 while ($c ne $rl && tell $fh != 0) {
1732 $offset -= 41;
1733 seek $fh, $offset, 2;
1734 $rl = readline $fh;
1735 defined $rl or return (undef, undef);
1736 chomp $rl;
1737 }
1738 my $rev = tell $fh;
1739 croak $! if ($rev < 0);
1740 $rev = ($rev - 41) / 41;
1741 close $fh or croak $!;
1742 ($self->{last_rev}, $self->{last_commit}) = ($rev, $c);
1743 return ($rev, $c);
1744}
1745sub parse_revision {
1747 my ($self, $base) = @_;
1748 my $head = $self->ra->get_latest_revnum;
1749 if (!defined $::_revision || $::_revision eq 'BASE:HEAD') {
1750 return ($base + 1, $head) if (defined $base);
1751 return (0, $head);
1752 }
1753 return ($1, $2) if ($::_revision =~ /^(\d+):(\d+)$/);
1754 return ($::_revision, $::_revision) if ($::_revision =~ /^\d+$/);
1755 if ($::_revision =~ /^BASE:(\d+)$/) {
1756 return ($base + 1, $1) if (defined $base);
1757 return (0, $head);
1758 }
1759 return ($1, $head) if ($::_revision =~ /^(\d+):HEAD$/);
1760 die "revision argument: $::_revision not understood by git-svn\n",
1761 "Try using the command-line svn client instead\n";
1762}
1763sub tmp_index_do {
1765 my ($self, $sub) = @_;
1766 my $old_index = $ENV{GIT_INDEX_FILE};
1767 $ENV{GIT_INDEX_FILE} = $self->{index};
1768 my @ret = &$sub;
1769 if ($old_index) {
1770 $ENV{GIT_INDEX_FILE} = $old_index;
1771 } else {
1772 delete $ENV{GIT_INDEX_FILE};
1773 }
1774 wantarray ? @ret : $ret[0];
1775}
1776sub assert_index_clean {
1778 my ($self, $treeish) = @_;
1779 $self->tmp_index_do(sub {
1781 command_noisy('read-tree', $treeish) unless -e $self->{index};
1782 my $x = command_oneline('write-tree');
1783 my ($y) = (command(qw/cat-file commit/, $treeish) =~
1784 /^tree ($::sha1)/mo);
1785 if ($y ne $x) {
1786 unlink $self->{index} or croak $!;
1787 command_noisy('read-tree', $treeish);
1788 }
1789 $x = command_oneline('write-tree');
1790 if ($y ne $x) {
1791 ::fatal "trees ($treeish) $y != $x\n",
1792 "Something is seriously wrong...\n";
1793 }
1794 });
1795}
1796sub get_commit_parents {
1798 my ($self, $log_entry, @parents) = @_;
1799 my (%seen, @ret, @tmp);
1800 # commit parents can be conditionally bound to a particular
1801 # svn revision via: "svn_revno=commit_sha1", filter them out here:
1802 foreach my $p (@parents) {
1803 next unless defined $p;
1804 if ($p =~ /^(\d+)=($::sha1_short)$/o) {
1805 push @tmp, $2 if $1 == $log_entry->{revision};
1806 } else {
1807 push @tmp, $p if $p =~ /^$::sha1_short$/o;
1808 }
1809 }
1810 if (my $cur = ::verify_ref($self->refname.'^0')) {
1811 push @tmp, $cur;
1812 }
1813 push @tmp, $_ foreach (@{$log_entry->{parents}}, @tmp);
1814 while (my $p = shift @tmp) {
1815 next if $seen{$p};
1816 $seen{$p} = 1;
1817 push @ret, $p;
1818 # MAXPARENT is defined to 16 in commit-tree.c:
1819 last if @ret >= 16;
1820 }
1821 if (@tmp) {
1822 die "r$log_entry->{revision}: No room for parents:\n\t",
1823 join("\n\t", @tmp), "\n";
1824 }
1825 @ret;
1826}
1827sub check_upgrade_needed {
1829 my ($self) = @_;
1830 if (!-r $self->{db_path}) {
1831 -d $self->{dir} or mkpath([$self->{dir}]);
1832 open my $fh, '>>', $self->{db_path} or croak $!;
1833 close $fh;
1834 }
1835 return unless ::verify_ref($self->{id}.'-HEAD^0');
1836 my $head = ::verify_ref($self->refname.'^0');
1837 if ($@ || !$head) {
1838 ::fatal("Please run: $0 rebuild --upgrade\n");
1839 }
1840}
1841sub do_git_commit {
1843 my ($self, $log_entry, @parents) = @_;
1844 if (my $c = $self->rev_db_get($log_entry->{revision})) {
1845 croak "$log_entry->{revision} = $c already exists! ",
1846 "Why are we refetching it?\n";
1847 }
1848 my ($name, $email) = ::author_name_email($log_entry->{author},
1849 $self->ra);
1850 $ENV{GIT_AUTHOR_NAME} = $ENV{GIT_COMMITTER_NAME} = $name;
1851 $ENV{GIT_AUTHOR_EMAIL} = $ENV{GIT_COMMITTER_EMAIL} = $email;
1852 $ENV{GIT_AUTHOR_DATE} = $ENV{GIT_COMMITTER_DATE} = $log_entry->{date};
1853 my $tree = $log_entry->{tree};
1855 if (!defined $tree) {
1856 $tree = $self->tmp_index_do(sub {
1857 command_oneline('write-tree') });
1858 }
1859 die "Tree is not a valid sha1: $tree\n" if $tree !~ /^$::sha1$/o;
1860 my @exec = ('git-commit-tree', $tree);
1862 foreach ($self->get_commit_parents($log_entry, @parents)) {
1863 push @exec, '-p', $_;
1864 }
1865 defined(my $pid = open3(my $msg_fh, my $out_fh, '>&STDERR', @exec))
1866 or croak $!;
1867 print $msg_fh $log_entry->{log} or croak $!;
1868 print $msg_fh "\ngit-svn-id: ", $self->ra->{url}, '@',
1869 $log_entry->{revision}, ' ',
1870 $self->ra->uuid, "\n" or croak $!;
1871 $msg_fh->flush == 0 or croak $!;
1872 close $msg_fh or croak $!;
1873 chomp(my $commit = do { local $/; <$out_fh> });
1874 close $out_fh or croak $!;
1875 waitpid $pid, 0;
1876 croak $? if $?;
1877 if ($commit !~ /^$::sha1$/o) {
1878 die "Failed to commit, invalid sha1: $commit\n";
1879 }
1880 command_noisy('update-ref',$self->refname, $commit);
1882 $self->rev_db_set($log_entry->{revision}, $commit);
1883 $self->{last_rev} = $log_entry->{revision};
1885 $self->{last_commit} = $commit;
1886 print "r$log_entry->{revision} = $commit\n";
1887 return $commit;
1888}
1889sub do_fetch {
1891 my ($self, $paths, $rev) = @_; #, $author, $date, $log) = @_;
1892 my $ed = SVN::Git::Fetcher->new($self);
1893 my ($last_rev, @parents);
1894 if ($self->{last_commit}) {
1895 $last_rev = $self->{last_rev};
1896 $ed->{c} = $self->{last_commit};
1897 @parents = ($self->{last_commit});
1898 } else {
1899 $last_rev = $rev;
1900 }
1901 unless ($self->ra->do_update($last_rev, $rev, '', 1, $ed)) {
1902 die "SVN connection failed somewhere...\n";
1903 }
1904 $self->make_log_entry($rev, \@parents, $ed);
1905}
1906sub write_untracked {
1908 my ($self, $rev, $fh, $untracked) = @_;
1909 my $h;
1910 print $fh "r$rev\n" or croak $!;
1911 $h = $untracked->{empty};
1912 foreach (sort keys %$h) {
1913 my $act = $h->{$_} ? '+empty_dir' : '-empty_dir';
1914 print $fh " $act: ", uri_encode($_), "\n" or croak $!;
1915 warn "W: $act: $_\n";
1916 }
1917 foreach my $t (qw/dir_prop file_prop/) {
1918 $h = $untracked->{$t} or next;
1919 foreach my $path (sort keys %$h) {
1920 my $ppath = $path eq '' ? '.' : $path;
1921 foreach my $prop (sort keys %{$h->{$path}}) {
1922 next if $SKIP{$prop};
1923 my $v = $h->{$path}->{$prop};
1924 if (defined $v) {
1925 print $fh " +$t: ",
1926 uri_encode($ppath), ' ',
1927 uri_encode($prop), ' ',
1928 uri_encode($v), "\n"
1929 or croak $!;
1930 } else {
1931 print $fh " -$t: ",
1932 uri_encode($ppath), ' ',
1933 uri_encode($prop), "\n"
1934 or croak $!;
1935 }
1936 }
1937 }
1938 }
1939 foreach my $t (qw/absent_file absent_directory/) {
1940 $h = $untracked->{$t} or next;
1941 foreach my $parent (sort keys %$h) {
1942 foreach my $path (sort @{$h->{$parent}}) {
1943 print $fh " $t: ",
1944 uri_encode("$parent/$path"), "\n"
1945 or croak $!;
1946 warn "W: $t: $parent/$path ",
1947 "Insufficient permissions?\n";
1948 }
1949 }
1950 }
1951}
1952sub make_log_entry {
1954 my ($self, $rev, $parents, $untracked) = @_;
1955 my $rp = $self->ra->rev_proplist($rev);
1956 my %log_entry = ( parents => $parents || [], revision => $rev,
1957 revprops => $rp, log => '');
1958 open my $un, '>>', "$self->{dir}/unhandled.log" or croak $!;
1959 $self->write_untracked($rev, $un, $untracked);
1960 foreach (sort keys %$rp) {
1961 my $v = $rp->{$_};
1962 if (/^svn:(author|date|log)$/) {
1963 $log_entry{$1} = $v;
1964 } else {
1965 print $un " rev_prop: ", uri_encode($_), ' ',
1966 uri_encode($v), "\n";
1967 }
1968 }
1969 close $un or croak $!;
1970 $log_entry{date} = parse_svn_date($log_entry{date});
1971 $log_entry{author} = check_author($log_entry{author});
1972 $log_entry{log} .= "\n";
1973 \%log_entry;
1974}
1975sub fetch {
1977 my ($self, @parents) = @_;
1978 my ($last_rev, $last_commit) = $self->last_rev_commit;
1979 my ($base, $head) = $self->parse_revision($last_rev);
1980 return if ($base > $head);
1981 if (defined $last_commit) {
1982 $self->assert_index_clean($last_commit);
1983 }
1984 my $inc = 1000;
1985 my ($min, $max) = ($base, $head < $base + $inc ? $head : $base + $inc);
1986 my $err_handler = $SVN::Error::handler;
1987 $SVN::Error::handler = \&skip_unknown_revs;
1988 while (1) {
1989 my @revs;
1990 $self->ra->get_log([''], $min, $max, 0, 1, 1, sub {
1991 my ($paths, $rev, $author, $date, $log) = @_;
1992 push @revs, $rev });
1993 foreach (@revs) {
1994 my $log_entry = $self->do_fetch(undef, $_);
1995 $self->do_git_commit($log_entry, @parents);
1996 }
1997 last if $max >= $head;
1998 $min = $max + 1;
1999 $max += $inc;
2000 $max = $head if ($max > $head);
2001 }
2002 $SVN::Error::handler = $err_handler;
2003}
2004sub set_tree_cb {
2006 my ($self, $log_entry, $tree, $rev, $date, $author) = @_;
2007 # TODO: enable and test optimized commits:
2008 if (0 && $rev == ($self->{last_rev} + 1)) {
2009 $log_entry->{revision} = $rev;
2010 $log_entry->{author} = $author;
2011 $self->do_git_commit($log_entry, "$rev=$tree");
2012 } else {
2013 $self->fetch("$rev=$tree");
2014 }
2015}
2016sub set_tree {
2018 my ($self, $tree) = (shift, shift);
2019 my $log_entry = get_commit_entry($tree);
2020 unless ($self->{last_rev}) {
2021 fatal("Must have an existing revision to commit\n");
2022 }
2023 my $pool = SVN::Pool->new;
2024 my $ed = SVN::Git::Editor->new({ r => $self->{last_rev},
2025 ra => $self->ra->dup,
2026 svn_path => $self->ra->{svn_path}
2027 },
2028 $self->ra->get_commit_editor(
2029 $log_entry->{log}, sub {
2030 $self->set_tree_cb($log_entry,
2031 $tree, @_);
2032 }),
2033 $pool);
2034 my $mods = $ed->apply_diff($self->{last_commit}, $tree);
2035 if (@$mods == 0) {
2036 print "No changes\nr$self->{last_rev} = $tree\n";
2037 }
2038 $pool->clear;
2039}
2040sub skip_unknown_revs {
2042 my ($err) = @_;
2043 my $errno = $err->apr_err();
2044 # Maybe the branch we're tracking didn't
2045 # exist when the repo started, so it's
2046 # not an error if it doesn't, just continue
2047 #
2048 # Wonderfully consistent library, eh?
2049 # 160013 - svn:// and file://
2050 # 175002 - http(s)://
2051 # 175007 - http(s):// (this repo required authorization, too...)
2052 # More codes may be discovered later...
2053 if ($errno == 175007 || $errno == 175002 || $errno == 160013) {
2054 return;
2055 }
2056 croak "Error from SVN, ($errno): ", $err->expanded_message,"\n";
2057}
2058# rev_db:
2060# Tie::File seems to be prone to offset errors if revisions get sparse,
2061# it's not that fast, either. Tie::File is also not in Perl 5.6. So
2062# one of my favorite modules is out :< Next up would be one of the DBM
2063# modules, but I'm not sure which is most portable... So I'll just
2064# go with something that's plain-text, but still capable of
2065# being randomly accessed. So here's my ultra-simple fixed-width
2066# database. All records are 40 characters + "\n", so it's easy to seek
2067# to a revision: (41 * rev) is the byte offset.
2068# A record of 40 0s denotes an empty revision.
2069# And yes, it's still pretty fast (faster than Tie::File).
2070sub rev_db_set {
2072 my ($self, $rev, $commit) = @_;
2073 length $commit == 40 or croak "arg3 must be a full SHA1 hexsum\n";
2074 open my $fh, '+<', $self->{db_path} or croak $!;
2075 my $offset = $rev * 41;
2076 # assume that append is the common case:
2077 seek $fh, 0, 2 or croak $!;
2078 my $pos = tell $fh;
2079 if ($pos < $offset) {
2080 print $fh (('0' x 40),"\n") x (($offset - $pos) / 41)
2081 or croak $!;
2082 }
2083 seek $fh, $offset, 0 or croak $!;
2084 print $fh $commit,"\n" or croak $!;
2085 close $fh or croak $!;
2086}
2087sub rev_db_get {
2089 my ($self, $rev) = @_;
2090 my $ret;
2091 my $offset = $rev * 41;
2092 open my $fh, '<', $self->{db_path} or croak $!;
2093 if (seek $fh, $offset, 0) {
2094 $ret = readline $fh;
2095 if (defined $ret) {
2096 chomp $ret;
2097 $ret = undef if ($ret =~ /^0{40}$/);
2098 }
2099 }
2100 close $fh or croak $!;
2101 $ret;
2102}
2103sub _new {
2105 my ($class, $id) = @_;
2106 $id ||= $Git::SVN::default;
2107 my $dir = "$ENV{GIT_DIR}/svn/$id";
2108 bless { id => $id, dir => $dir, index => "$dir/index",
2109 db_path => "$dir/.rev_db" }, $class;
2110}
2111package Git::SVN::Prompt;
2114use strict;
2115use warnings;
2116require SVN::Core;
2117use vars qw/$_no_auth_cache $_username/;
2118sub simple {
2120 my ($cred, $realm, $default_username, $may_save, $pool) = @_;
2121 $may_save = undef if $_no_auth_cache;
2122 $default_username = $_username if defined $_username;
2123 if (defined $default_username && length $default_username) {
2124 if (defined $realm && length $realm) {
2125 print STDERR "Authentication realm: $realm\n";
2126 STDERR->flush;
2127 }
2128 $cred->username($default_username);
2129 } else {
2130 username($cred, $realm, $may_save, $pool);
2131 }
2132 $cred->password(_read_password("Password for '" .
2133 $cred->username . "': ", $realm));
2134 $cred->may_save($may_save);
2135 $SVN::_Core::SVN_NO_ERROR;
2136}
2137sub ssl_server_trust {
2139 my ($cred, $realm, $failures, $cert_info, $may_save, $pool) = @_;
2140 $may_save = undef if $_no_auth_cache;
2141 print STDERR "Error validating server certificate for '$realm':\n";
2142 if ($failures & $SVN::Auth::SSL::UNKNOWNCA) {
2143 print STDERR " - The certificate is not issued by a trusted ",
2144 "authority. Use the\n",
2145 " fingerprint to validate the certificate manually!\n";
2146 }
2147 if ($failures & $SVN::Auth::SSL::CNMISMATCH) {
2148 print STDERR " - The certificate hostname does not match.\n";
2149 }
2150 if ($failures & $SVN::Auth::SSL::NOTYETVALID) {
2151 print STDERR " - The certificate is not yet valid.\n";
2152 }
2153 if ($failures & $SVN::Auth::SSL::EXPIRED) {
2154 print STDERR " - The certificate has expired.\n";
2155 }
2156 if ($failures & $SVN::Auth::SSL::OTHER) {
2157 print STDERR " - The certificate has an unknown error.\n";
2158 }
2159 printf STDERR
2160 "Certificate information:\n".
2161 " - Hostname: %s\n".
2162 " - Valid: from %s until %s\n".
2163 " - Issuer: %s\n".
2164 " - Fingerprint: %s\n",
2165 map $cert_info->$_, qw(hostname valid_from valid_until
2166 issuer_dname fingerprint);
2167 my $choice;
2168prompt:
2169 print STDERR $may_save ?
2170 "(R)eject, accept (t)emporarily or accept (p)ermanently? " :
2171 "(R)eject or accept (t)emporarily? ";
2172 STDERR->flush;
2173 $choice = lc(substr(<STDIN> || 'R', 0, 1));
2174 if ($choice =~ /^t$/i) {
2175 $cred->may_save(undef);
2176 } elsif ($choice =~ /^r$/i) {
2177 return -1;
2178 } elsif ($may_save && $choice =~ /^p$/i) {
2179 $cred->may_save($may_save);
2180 } else {
2181 goto prompt;
2182 }
2183 $cred->accepted_failures($failures);
2184 $SVN::_Core::SVN_NO_ERROR;
2185}
2186sub ssl_client_cert {
2188 my ($cred, $realm, $may_save, $pool) = @_;
2189 $may_save = undef if $_no_auth_cache;
2190 print STDERR "Client certificate filename: ";
2191 STDERR->flush;
2192 chomp(my $filename = <STDIN>);
2193 $cred->cert_file($filename);
2194 $cred->may_save($may_save);
2195 $SVN::_Core::SVN_NO_ERROR;
2196}
2197sub ssl_client_cert_pw {
2199 my ($cred, $realm, $may_save, $pool) = @_;
2200 $may_save = undef if $_no_auth_cache;
2201 $cred->password(_read_password("Password: ", $realm));
2202 $cred->may_save($may_save);
2203 $SVN::_Core::SVN_NO_ERROR;
2204}
2205sub username {
2207 my ($cred, $realm, $may_save, $pool) = @_;
2208 $may_save = undef if $_no_auth_cache;
2209 if (defined $realm && length $realm) {
2210 print STDERR "Authentication realm: $realm\n";
2211 }
2212 my $username;
2213 if (defined $_username) {
2214 $username = $_username;
2215 } else {
2216 print STDERR "Username: ";
2217 STDERR->flush;
2218 chomp($username = <STDIN>);
2219 }
2220 $cred->username($username);
2221 $cred->may_save($may_save);
2222 $SVN::_Core::SVN_NO_ERROR;
2223}
2224sub _read_password {
2226 my ($prompt, $realm) = @_;
2227 print STDERR $prompt;
2228 STDERR->flush;
2229 require Term::ReadKey;
2230 Term::ReadKey::ReadMode('noecho');
2231 my $password = '';
2232 while (defined(my $key = Term::ReadKey::ReadKey(0))) {
2233 last if $key =~ /[\012\015]/; # \n\r
2234 $password .= $key;
2235 }
2236 Term::ReadKey::ReadMode('restore');
2237 print STDERR "\n";
2238 STDERR->flush;
2239 $password;
2240}
2241package main;
2243sub uri_encode {
2245 my ($f) = @_;
2246 $f =~ s#([^a-zA-Z0-9\*!\:_\./\-])#uc sprintf("%%%02x",ord($1))#eg;
2247 $f
2248}
2249sub uri_decode {
2251 my ($f) = @_;
2252 $f =~ tr/+/ /;
2253 $f =~ s/%([A-F0-9]{2})/chr hex($1)/ge;
2254 $f
2255}
2256sub libsvn_log_entry {
2258 my ($rev, $author, $date, $log, $parents, $untracked) = @_;
2259 my ($Y,$m,$d,$H,$M,$S) = ($date =~ /^(\d{4})\-(\d\d)\-(\d\d)T
2260 (\d\d)\:(\d\d)\:(\d\d).\d+Z$/x)
2261 or die "Unable to parse date: $date\n";
2262 if (defined $author && length $author > 0 &&
2263 defined $_authors && ! defined $users{$author}) {
2264 die "Author: $author not defined in $_authors file\n";
2265 }
2266 $log = '' if ($rev == 0 && !defined $log);
2267 open my $un, '>>', "$GIT_SVN_DIR/unhandled.log" or croak $!;
2269 my $h;
2270 print $un "r$rev\n" or croak $!;
2271 $h = $untracked->{empty};
2272 foreach (sort keys %$h) {
2273 my $act = $h->{$_} ? '+empty_dir' : '-empty_dir';
2274 print $un " $act: ", uri_encode($_), "\n" or croak $!;
2275 warn "W: $act: $_\n";
2276 }
2277 foreach my $t (qw/dir_prop file_prop/) {
2278 $h = $untracked->{$t} or next;
2279 foreach my $path (sort keys %$h) {
2280 my $ppath = $path eq '' ? '.' : $path;
2281 foreach my $prop (sort keys %{$h->{$path}}) {
2282 next if $SKIP{$prop};
2283 my $v = $h->{$path}->{$prop};
2284 if (defined $v) {
2285 print $un " +$t: ",
2286 uri_encode($ppath), ' ',
2287 uri_encode($prop), ' ',
2288 uri_encode($v), "\n"
2289 or croak $!;
2290 } else {
2291 print $un " -$t: ",
2292 uri_encode($ppath), ' ',
2293 uri_encode($prop), "\n"
2294 or croak $!;
2295 }
2296 }
2297 }
2298 }
2299 foreach my $t (qw/absent_file absent_directory/) {
2300 $h = $untracked->{$t} or next;
2301 foreach my $parent (sort keys %$h) {
2302 foreach my $path (sort @{$h->{$parent}}) {
2303 print $un " $t: ",
2304 uri_encode("$parent/$path"), "\n"
2305 or croak $!;
2306 warn "W: $t: $parent/$path ",
2307 "Insufficient permissions?\n";
2308 }
2309 }
2310 }
2311 # revprops (make this optional? it's an extra network trip...)
2313 my $rp = $SVN->rev_proplist($rev);
2314 foreach (sort keys %$rp) {
2315 next if /^svn:(?:author|date|log)$/;
2316 print $un " rev_prop: ", uri_encode($_), ' ',
2317 uri_encode($rp->{$_}), "\n";
2318 }
2319 close $un or croak $!;
2320 { revision => $rev, date => "+0000 $Y-$m-$d $H:$M:$S",
2322 author => $author, log => $log."\n", parents => $parents || [],
2323 revprops => $rp }
2324}
2325sub libsvn_fetch {
2327 my ($last_commit, $paths, $rev, $author, $date, $log) = @_;
2328 my $ed = SVN::Git::Fetcher->new({ c => $last_commit, q => $_q });
2329 my (undef, $last_rev, undef) = cmt_metadata($last_commit);
2330 unless ($SVN->gs_do_update($last_rev, $rev, '', 1, $ed)) {
2331 die "SVN connection failed somewhere...\n";
2332 }
2333 libsvn_log_entry($rev, $author, $date, $log, [$last_commit], $ed);
2334}
2335sub svn_grab_base_rev {
2337 my $c = eval { command_oneline([qw/rev-parse --verify/,
2338 "refs/remotes/$GIT_SVN^0"],
2339 { STDERR => 0 }) };
2340 if (defined $c && length $c) {
2341 my ($url, $rev, $uuid) = cmt_metadata($c);
2342 return ($rev, $c) if defined $rev;
2343 }
2344 if ($_no_metadata) {
2345 my $offset = -41; # from tail
2346 my $rl;
2347 open my $fh, '<', $REVDB or
2348 die "--no-metadata specified and $REVDB not readable\n";
2349 seek $fh, $offset, 2;
2350 $rl = readline $fh;
2351 defined $rl or return (undef, undef);
2352 chomp $rl;
2353 while ($c ne $rl && tell $fh != 0) {
2354 $offset -= 41;
2355 seek $fh, $offset, 2;
2356 $rl = readline $fh;
2357 defined $rl or return (undef, undef);
2358 chomp $rl;
2359 }
2360 my $rev = tell $fh;
2361 croak $! if ($rev < -1);
2362 $rev = ($rev - 41) / 41;
2363 close $fh or croak $!;
2364 return ($rev, $c);
2365 }
2366 return (undef, undef);
2367}
2368sub libsvn_parse_revision {
2370 my $base = shift;
2371 my $head = $SVN->get_latest_revnum();
2372 if (!defined $_revision || $_revision eq 'BASE:HEAD') {
2373 return ($base + 1, $head) if (defined $base);
2374 return (0, $head);
2375 }
2376 return ($1, $2) if ($_revision =~ /^(\d+):(\d+)$/);
2377 return ($_revision, $_revision) if ($_revision =~ /^\d+$/);
2378 if ($_revision =~ /^BASE:(\d+)$/) {
2379 return ($base + 1, $1) if (defined $base);
2380 return (0, $head);
2381 }
2382 return ($1, $head) if ($_revision =~ /^(\d+):HEAD$/);
2383 die "revision argument: $_revision not understood by git-svn\n",
2384 "Try using the command-line svn client instead\n";
2385}
2386sub libsvn_traverse_ignore {
2388 my ($fh, $path, $r) = @_;
2389 $path =~ s#^/+##g;
2390 my ($dirent, undef, $props) = $SVN->get_dir($path, $r);
2391 my $p = $path;
2392 $p =~ s#^\Q$SVN->{svn_path}\E/##;
2393 print $fh length $p ? "\n# $p\n" : "\n# /\n";
2394 if (my $s = $props->{'svn:ignore'}) {
2395 $s =~ s/[\r\n]+/\n/g;
2396 chomp $s;
2397 if (length $p == 0) {
2398 $s =~ s#\n#\n/$p#g;
2399 print $fh "/$s\n";
2400 } else {
2401 $s =~ s#\n#\n/$p/#g;
2402 print $fh "/$p/$s\n";
2403 }
2404 }
2405 foreach (sort keys %$dirent) {
2406 next if $dirent->{$_}->kind != $SVN::Node::dir;
2407 libsvn_traverse_ignore($fh, "$path/$_", $r);
2408 }
2409}
2410sub revisions_eq {
2412 my ($path, $r0, $r1) = @_;
2413 return 1 if $r0 == $r1;
2414 my $nr = 0;
2415 # should be OK to use Pool here (r1 - r0) should be small
2416 $SVN->get_log([$path], $r0, $r1, 0, 0, 1, sub {$nr++});
2417 return 0 if ($nr > 1);
2418 return 1;
2419}
2420sub libsvn_find_parent_branch {
2422 my ($paths, $rev, $author, $date, $log) = @_;
2423 my $svn_path = '/'.$SVN->{svn_path};
2424 # look for a parent from another branch:
2426 my $i = $paths->{$svn_path} or return;
2427 my $branch_from = $i->copyfrom_path or return;
2428 my $r = $i->copyfrom_rev;
2429 print STDERR "Found possible branch point: ",
2430 "$branch_from => $svn_path, $r\n";
2431 $branch_from =~ s#^/##;
2432 my $l_map = {};
2433 read_url_paths_all($l_map, '', "$GIT_DIR/svn");
2434 my $url = $SVN->{repos_root};
2435 defined $l_map->{$url} or return;
2436 my $id = $l_map->{$url}->{$branch_from};
2437 if (!defined $id && $_follow_parent) {
2438 print STDERR "Following parent: $branch_from\@$r\n";
2439 # auto create a new branch and follow it
2440 $id = basename($branch_from);
2441 $id .= '@'.$r if -r "$GIT_DIR/svn/$id";
2442 while (-r "$GIT_DIR/svn/$id") {
2443 # just grow a tail if we're not unique enough :x
2444 $id .= '-';
2445 }
2446 }
2447 return unless defined $id;
2448 my ($r0, $parent) = find_rev_before($r,$id,1);
2450 if ($_follow_parent && (!defined $r0 || !defined $parent)) {
2451 defined(my $pid = fork) or croak $!;
2452 if (!$pid) {
2453 $GIT_SVN = $ENV{GIT_SVN_ID} = $id;
2454 init_vars();
2455 $SVN_URL = "$url/$branch_from";
2456 $SVN = undef;
2457 setup_git_svn();
2458 # we can't assume SVN_URL exists at r+1:
2459 $_revision = "0:$r";
2460 fetch_lib();
2461 exit 0;
2462 }
2463 waitpid $pid, 0;
2464 croak $? if $?;
2465 ($r0, $parent) = find_rev_before($r,$id,1);
2466 }
2467 return unless (defined $r0 && defined $parent);
2468 if (revisions_eq($branch_from, $r0, $r)) {
2469 unlink $GIT_SVN_INDEX;
2470 print STDERR "Found branch parent: ($GIT_SVN) $parent\n";
2471 command_noisy('read-tree', $parent);
2472 unless ($SVN->can_do_switch) {
2473 return _libsvn_new_tree($paths, $rev, $author, $date,
2474 $log, [$parent]);
2475 }
2476 # do_switch works with svn/trunk >= r22312, but that is not
2477 # included with SVN 1.4.2 (the latest version at the moment),
2478 # so we can't rely on it.
2479 my $ra = Git::SVN::Ra->new("$url/$branch_from");
2480 my $ed = SVN::Git::Fetcher->new({c => $parent, q => $_q });
2481 $ra->gs_do_switch($r0, $rev, '', 1, $SVN->{url}, $ed) or
2482 die "SVN connection failed somewhere...\n";
2483 return libsvn_log_entry($rev, $author, $date, $log, [$parent]);
2484 }
2485 print STDERR "Nope, branch point not imported or unknown\n";
2486 return undef;
2487}
2488sub libsvn_new_tree {
2490 if (my $log_entry = libsvn_find_parent_branch(@_)) {
2491 return $log_entry;
2492 }
2493 my ($paths, $rev, $author, $date, $log) = @_; # $pool is last
2494 _libsvn_new_tree($paths, $rev, $author, $date, $log, []);
2495}
2496sub _libsvn_new_tree {
2498 my ($paths, $rev, $author, $date, $log, $parents) = @_;
2499 my $ed = SVN::Git::Fetcher->new({q => $_q});
2500 unless ($SVN->gs_do_update($rev, $rev, '', 1, $ed)) {
2501 die "SVN connection failed somewhere...\n";
2502 }
2503 libsvn_log_entry($rev, $author, $date, $log, $parents, $ed);
2504}
2505sub find_graft_path_commit {
2507 my ($tree_paths, $p1, $r1) = @_;
2508 foreach my $x (keys %$tree_paths) {
2509 next unless ($p1 =~ /^\Q$x\E/);
2510 my $i = $tree_paths->{$x};
2511 my ($r0, $parent) = find_rev_before($r1,$i,1);
2512 return $parent if (defined $r0 && $r0 == $r1);
2513 print STDERR "r$r1 of $i not imported\n";
2514 next;
2515 }
2516 return undef;
2517}
2518sub find_graft_path_parents {
2520 my ($grafts, $tree_paths, $c, $p0, $r0) = @_;
2521 foreach my $x (keys %$tree_paths) {
2522 next unless ($p0 =~ /^\Q$x\E/);
2523 my $i = $tree_paths->{$x};
2524 my ($r, $parent) = find_rev_before($r0, $i, 1);
2525 if (defined $r && defined $parent && revisions_eq($x,$r,$r0)) {
2526 my ($url_b, undef, $uuid_b) = cmt_metadata($c);
2527 my ($url_a, undef, $uuid_a) = cmt_metadata($parent);
2528 next if ($url_a && $url_b && $url_a eq $url_b &&
2529 $uuid_b eq $uuid_a);
2530 $grafts->{$c}->{$parent} = 1;
2531 }
2532 }
2533}
2534sub libsvn_graft_file_copies {
2536 my ($grafts, $tree_paths, $path, $paths, $rev) = @_;
2537 foreach (keys %$paths) {
2538 my $i = $paths->{$_};
2539 my ($m, $p0, $r0) = ($i->action, $i->copyfrom_path,
2540 $i->copyfrom_rev);
2541 next unless (defined $p0 && defined $r0);
2542 my $p1 = $_;
2544 $p1 =~ s#^/##;
2545 $p0 =~ s#^/##;
2546 my $c = find_graft_path_commit($tree_paths, $p1, $rev);
2547 next unless $c;
2548 find_graft_path_parents($grafts, $tree_paths, $c, $p0, $r0);
2549 }
2550}
2551sub set_index {
2553 my $old = $ENV{GIT_INDEX_FILE};
2554 $ENV{GIT_INDEX_FILE} = shift;
2555 return $old;
2556}
2557sub restore_index {
2559 my ($old) = @_;
2560 if (defined $old) {
2561 $ENV{GIT_INDEX_FILE} = $old;
2562 } else {
2563 delete $ENV{GIT_INDEX_FILE};
2564 }
2565}
2566sub libsvn_commit_cb {
2568 my ($rev, $date, $committer, $c, $log, $r_last, $cmt_last) = @_;
2569 if ($_optimize_commits && $rev == ($r_last + 1)) {
2570 my $log = libsvn_log_entry($rev,$committer,$date,$log);
2571 $log->{tree} = get_tree_from_treeish($c);
2572 my $cmt = git_commit($log, $cmt_last, $c);
2573 my @diff = command('diff-tree', $cmt, $c);
2574 if (@diff) {
2575 print STDERR "Trees differ: $cmt $c\n",
2576 join('',@diff),"\n";
2577 exit 1;
2578 }
2579 } else {
2580 fetch("$rev=$c");
2581 }
2582}
2583sub libsvn_skip_unknown_revs {
2585 my $err = shift;
2586 my $errno = $err->apr_err();
2587 # Maybe the branch we're tracking didn't
2588 # exist when the repo started, so it's
2589 # not an error if it doesn't, just continue
2590 #
2591 # Wonderfully consistent library, eh?
2592 # 160013 - svn:// and file://
2593 # 175002 - http(s)://
2594 # 175007 - http(s):// (this repo required authorization, too...)
2595 # More codes may be discovered later...
2596 if ($errno == 175007 || $errno == 175002 || $errno == 160013) {
2597 return;
2598 }
2599 croak "Error from SVN, ($errno): ", $err->expanded_message,"\n";
2600};
2601# Tie::File seems to be prone to offset errors if revisions get sparse,
2603# it's not that fast, either. Tie::File is also not in Perl 5.6. So
2604# one of my favorite modules is out :< Next up would be one of the DBM
2605# modules, but I'm not sure which is most portable... So I'll just
2606# go with something that's plain-text, but still capable of
2607# being randomly accessed. So here's my ultra-simple fixed-width
2608# database. All records are 40 characters + "\n", so it's easy to seek
2609# to a revision: (41 * rev) is the byte offset.
2610# A record of 40 0s denotes an empty revision.
2611# And yes, it's still pretty fast (faster than Tie::File).
2612sub revdb_set {
2613 my ($file, $rev, $commit) = @_;
2614 length $commit == 40 or croak "arg3 must be a full SHA1 hexsum\n";
2615 open my $fh, '+<', $file or croak $!;
2616 my $offset = $rev * 41;
2617 # assume that append is the common case:
2618 seek $fh, 0, 2 or croak $!;
2619 my $pos = tell $fh;
2620 if ($pos < $offset) {
2621 print $fh (('0' x 40),"\n") x (($offset - $pos) / 41);
2622 }
2623 seek $fh, $offset, 0 or croak $!;
2624 print $fh $commit,"\n";
2625 close $fh or croak $!;
2626}
2627sub revdb_get {
2629 my ($file, $rev) = @_;
2630 my $ret;
2631 my $offset = $rev * 41;
2632 open my $fh, '<', $file or croak $!;
2633 seek $fh, $offset, 0;
2634 if (tell $fh == $offset) {
2635 $ret = readline $fh;
2636 if (defined $ret) {
2637 chomp $ret;
2638 $ret = undef if ($ret =~ /^0{40}$/);
2639 }
2640 }
2641 close $fh or croak $!;
2642 return $ret;
2643}
2644{
2646 my $kill_stupid_warnings = $SVN::Node::none.$SVN::Node::file.
2647 $SVN::Node::dir.$SVN::Node::unknown.
2648 $SVN::Node::none.$SVN::Node::file.
2649 $SVN::Node::dir.$SVN::Node::unknown.
2650 $SVN::Auth::SSL::CNMISMATCH.
2651 $SVN::Auth::SSL::NOTYETVALID.
2652 $SVN::Auth::SSL::EXPIRED.
2653 $SVN::Auth::SSL::UNKNOWNCA.
2654 $SVN::Auth::SSL::OTHER;
2655}
2656package SVN::Git::Fetcher;
2658use vars qw/@ISA/;
2659use strict;
2660use warnings;
2661use Carp qw/croak/;
2662use IO::File qw//;
2663# file baton members: path, mode_a, mode_b, pool, fh, blob, base
2665sub new {
2666 my ($class, $git_svn) = @_;
2667 my $self = SVN::Delta::Editor->new;
2668 bless $self, $class;
2669 $self->{c} = $git_svn->{c} if exists $git_svn->{c};
2670 $self->{q} = $git_svn->{q};
2671 $self->{empty} = {};
2672 $self->{dir_prop} = {};
2673 $self->{file_prop} = {};
2674 $self->{absent_dir} = {};
2675 $self->{absent_file} = {};
2676 ($self->{gui}, $self->{ctx}) = command_input_pipe(
2677 qw/update-index -z --index-info/);
2678 require Digest::MD5;
2679 $self;
2680}
2681sub open_root {
2683 { path => '' };
2684}
2685sub open_directory {
2687 my ($self, $path, $pb, $rev) = @_;
2688 { path => $path };
2689}
2690sub delete_entry {
2692 my ($self, $path, $rev, $pb) = @_;
2693 my $gui = $self->{gui};
2694 # remove entire directories.
2696 if (command('ls-tree', $self->{c}, '--', $path) =~ /^040000 tree/) {
2697 my ($ls, $ctx) = command_output_pipe(qw/ls-tree
2698 -r --name-only -z/,
2699 $self->{c}, '--', $path);
2700 local $/ = "\0";
2701 while (<$ls>) {
2702 print $gui '0 ',0 x 40,"\t",$_ or croak $!;
2703 print "\tD\t$_\n" unless $self->{q};
2704 }
2705 print "\tD\t$path/\n" unless $self->{q};
2706 command_close_pipe($ls, $ctx);
2707 $self->{empty}->{$path} = 0
2708 } else {
2709 print $gui '0 ',0 x 40,"\t",$path,"\0" or croak $!;
2710 print "\tD\t$path\n" unless $self->{q};
2711 }
2712 undef;
2713}
2714sub open_file {
2716 my ($self, $path, $pb, $rev) = @_;
2717 my ($mode, $blob) = (command('ls-tree', $self->{c}, '--',$path)
2718 =~ /^(\d{6}) blob ([a-f\d]{40})\t/);
2719 unless (defined $mode && defined $blob) {
2720 die "$path was not found in commit $self->{c} (r$rev)\n";
2721 }
2722 { path => $path, mode_a => $mode, mode_b => $mode, blob => $blob,
2723 pool => SVN::Pool->new, action => 'M' };
2724}
2725sub add_file {
2727 my ($self, $path, $pb, $cp_path, $cp_rev) = @_;
2728 my ($dir, $file) = ($path =~ m#^(.*?)/?([^/]+)$#);
2729 delete $self->{empty}->{$dir};
2730 { path => $path, mode_a => 100644, mode_b => 100644,
2731 pool => SVN::Pool->new, action => 'A' };
2732}
2733sub add_directory {
2735 my ($self, $path, $cp_path, $cp_rev) = @_;
2736 my ($dir, $file) = ($path =~ m#^(.*?)/?([^/]+)$#);
2737 delete $self->{empty}->{$dir};
2738 $self->{empty}->{$path} = 1;
2739 { path => $path };
2740}
2741sub change_dir_prop {
2743 my ($self, $db, $prop, $value) = @_;
2744 $self->{dir_prop}->{$db->{path}} ||= {};
2745 $self->{dir_prop}->{$db->{path}}->{$prop} = $value;
2746 undef;
2747}
2748sub absent_directory {
2750 my ($self, $path, $pb) = @_;
2751 $self->{absent_dir}->{$pb->{path}} ||= [];
2752 push @{$self->{absent_dir}->{$pb->{path}}}, $path;
2753 undef;
2754}
2755sub absent_file {
2757 my ($self, $path, $pb) = @_;
2758 $self->{absent_file}->{$pb->{path}} ||= [];
2759 push @{$self->{absent_file}->{$pb->{path}}}, $path;
2760 undef;
2761}
2762sub change_file_prop {
2764 my ($self, $fb, $prop, $value) = @_;
2765 if ($prop eq 'svn:executable') {
2766 if ($fb->{mode_b} != 120000) {
2767 $fb->{mode_b} = defined $value ? 100755 : 100644;
2768 }
2769 } elsif ($prop eq 'svn:special') {
2770 $fb->{mode_b} = defined $value ? 120000 : 100644;
2771 } else {
2772 $self->{file_prop}->{$fb->{path}} ||= {};
2773 $self->{file_prop}->{$fb->{path}}->{$prop} = $value;
2774 }
2775 undef;
2776}
2777sub apply_textdelta {
2779 my ($self, $fb, $exp) = @_;
2780 my $fh = IO::File->new_tmpfile;
2781 $fh->autoflush(1);
2782 # $fh gets auto-closed() by SVN::TxDelta::apply(),
2783 # (but $base does not,) so dup() it for reading in close_file
2784 open my $dup, '<&', $fh or croak $!;
2785 my $base = IO::File->new_tmpfile;
2786 $base->autoflush(1);
2787 if ($fb->{blob}) {
2788 defined (my $pid = fork) or croak $!;
2789 if (!$pid) {
2790 open STDOUT, '>&', $base or croak $!;
2791 print STDOUT 'link ' if ($fb->{mode_a} == 120000);
2792 exec qw/git-cat-file blob/, $fb->{blob} or croak $!;
2793 }
2794 waitpid $pid, 0;
2795 croak $? if $?;
2796 if (defined $exp) {
2798 seek $base, 0, 0 or croak $!;
2799 my $md5 = Digest::MD5->new;
2800 $md5->addfile($base);
2801 my $got = $md5->hexdigest;
2802 die "Checksum mismatch: $fb->{path} $fb->{blob}\n",
2803 "expected: $exp\n",
2804 " got: $got\n" if ($got ne $exp);
2805 }
2806 }
2807 seek $base, 0, 0 or croak $!;
2808 $fb->{fh} = $dup;
2809 $fb->{base} = $base;
2810 [ SVN::TxDelta::apply($base, $fh, undef, $fb->{path}, $fb->{pool}) ];
2811}
2812sub close_file {
2814 my ($self, $fb, $exp) = @_;
2815 my $hash;
2816 my $path = $fb->{path};
2817 if (my $fh = $fb->{fh}) {
2818 seek($fh, 0, 0) or croak $!;
2819 my $md5 = Digest::MD5->new;
2820 $md5->addfile($fh);
2821 my $got = $md5->hexdigest;
2822 die "Checksum mismatch: $path\n",
2823 "expected: $exp\n got: $got\n" if ($got ne $exp);
2824 seek($fh, 0, 0) or croak $!;
2825 if ($fb->{mode_b} == 120000) {
2826 read($fh, my $buf, 5) == 5 or croak $!;
2827 $buf eq 'link ' or die "$path has mode 120000",
2828 "but is not a link\n";
2829 }
2830 defined(my $pid = open my $out,'-|') or die "Can't fork: $!\n";
2831 if (!$pid) {
2832 open STDIN, '<&', $fh or croak $!;
2833 exec qw/git-hash-object -w --stdin/ or croak $!;
2834 }
2835 chomp($hash = do { local $/; <$out> });
2836 close $out or croak $!;
2837 close $fh or croak $!;
2838 $hash =~ /^[a-f\d]{40}$/ or die "not a sha1: $hash\n";
2839 close $fb->{base} or croak $!;
2840 } else {
2841 $hash = $fb->{blob} or die "no blob information\n";
2842 }
2843 $fb->{pool}->clear;
2844 my $gui = $self->{gui};
2845 print $gui "$fb->{mode_b} $hash\t$path\0" or croak $!;
2846 print "\t$fb->{action}\t$path\n" if $fb->{action} && ! $self->{q};
2847 undef;
2848}
2849sub abort_edit {
2851 my $self = shift;
2852 eval { command_close_pipe($self->{gui}, $self->{ctx}) };
2853 $self->SUPER::abort_edit(@_);
2854}
2855sub close_edit {
2857 my $self = shift;
2858 command_close_pipe($self->{gui}, $self->{ctx});
2859 $self->{git_commit_ok} = 1;
2860 $self->SUPER::close_edit(@_);
2861}
2862package SVN::Git::Editor;
2864use vars qw/@ISA/;
2865use strict;
2866use warnings;
2867use Carp qw/croak/;
2868use IO::File;
2869sub new {
2871 my $class = shift;
2872 my $git_svn = shift;
2873 my $self = SVN::Delta::Editor->new(@_);
2874 bless $self, $class;
2875 foreach (qw/svn_path r ra/) {
2876 die "$_ required!\n" unless (defined $git_svn->{$_});
2877 $self->{$_} = $git_svn->{$_};
2878 }
2879 $self->{pool} = SVN::Pool->new;
2880 $self->{bat} = { '' => $self->open_root($self->{r}, $self->{pool}) };
2881 $self->{rm} = { };
2882 require Digest::MD5;
2883 return $self;
2884}
2885sub split_path {
2887 return ($_[0] =~ m#^(.*?)/?([^/]+)$#);
2888}
2889sub repo_path {
2891 (defined $_[1] && length $_[1]) ? $_[1] : ''
2892}
2893sub url_path {
2895 my ($self, $path) = @_;
2896 $self->{ra}->{url} . '/' . $self->repo_path($path);
2897}
2898sub rmdirs {
2900 my ($self, $tree_b) = @_;
2901 my $rm = $self->{rm};
2902 delete $rm->{''}; # we never delete the url we're tracking
2903 return unless %$rm;
2904 foreach (keys %$rm) {
2906 my @d = split m#/#, $_;
2907 my $c = shift @d;
2908 $rm->{$c} = 1;
2909 while (@d) {
2910 $c .= '/' . shift @d;
2911 $rm->{$c} = 1;
2912 }
2913 }
2914 delete $rm->{$self->{svn_path}};
2915 delete $rm->{''}; # we never delete the url we're tracking
2916 return unless %$rm;
2917 my ($fh, $ctx) = command_output_pipe(
2919 qw/ls-tree --name-only -r -z/, $tree_b);
2920 local $/ = "\0";
2921 while (<$fh>) {
2922 chomp;
2923 my @dn = split m#/#, $_;
2924 while (pop @dn) {
2925 delete $rm->{join '/', @dn};
2926 }
2927 unless (%$rm) {
2928 close $fh;
2929 return;
2930 }
2931 }
2932 command_close_pipe($fh, $ctx);
2933 my ($r, $p, $bat) = ($self->{r}, $self->{pool}, $self->{bat});
2935 foreach my $d (sort { $b =~ tr#/#/# <=> $a =~ tr#/#/# } keys %$rm) {
2936 $self->close_directory($bat->{$d}, $p);
2937 my ($dn) = ($d =~ m#^(.*?)/?(?:[^/]+)$#);
2938 print "\tD+\t$d/\n" unless $::_q;
2939 $self->SUPER::delete_entry($d, $r, $bat->{$dn}, $p);
2940 delete $bat->{$d};
2941 }
2942}
2943sub open_or_add_dir {
2945 my ($self, $full_path, $baton) = @_;
2946 my $t = $self->{ra}->check_path($full_path, $self->{r});
2947 if ($t == $SVN::Node::none) {
2948 return $self->add_directory($full_path, $baton,
2949 undef, -1, $self->{pool});
2950 } elsif ($t == $SVN::Node::dir) {
2951 return $self->open_directory($full_path, $baton,
2952 $self->{r}, $self->{pool});
2953 }
2954 print STDERR "$full_path already exists in repository at ",
2955 "r$self->{r} and it is not a directory (",
2956 ($t == $SVN::Node::file ? 'file' : 'unknown'),"/$t)\n";
2957 exit 1;
2958}
2959sub ensure_path {
2961 my ($self, $path) = @_;
2962 my $bat = $self->{bat};
2963 $path = $self->repo_path($path);
2964 return $bat->{''} unless (length $path);
2965 my @p = split m#/+#, $path;
2966 my $c = shift @p;
2967 $bat->{$c} ||= $self->open_or_add_dir($c, $bat->{''});
2968 while (@p) {
2969 my $c0 = $c;
2970 $c .= '/' . shift @p;
2971 $bat->{$c} ||= $self->open_or_add_dir($c, $bat->{$c0});
2972 }
2973 return $bat->{$c};
2974}
2975sub A {
2977 my ($self, $m) = @_;
2978 my ($dir, $file) = split_path($m->{file_b});
2979 my $pbat = $self->ensure_path($dir);
2980 my $fbat = $self->add_file($self->repo_path($m->{file_b}), $pbat,
2981 undef, -1);
2982 print "\tA\t$m->{file_b}\n" unless $::_q;
2983 $self->chg_file($fbat, $m);
2984 $self->close_file($fbat,undef,$self->{pool});
2985}
2986sub C {
2988 my ($self, $m) = @_;
2989 my ($dir, $file) = split_path($m->{file_b});
2990 my $pbat = $self->ensure_path($dir);
2991 my $fbat = $self->add_file($self->repo_path($m->{file_b}), $pbat,
2992 $self->url_path($m->{file_a}), $self->{r});
2993 print "\tC\t$m->{file_a} => $m->{file_b}\n" unless $::_q;
2994 $self->chg_file($fbat, $m);
2995 $self->close_file($fbat,undef,$self->{pool});
2996}
2997sub delete_entry {
2999 my ($self, $path, $pbat) = @_;
3000 my $rpath = $self->repo_path($path);
3001 my ($dir, $file) = split_path($rpath);
3002 $self->{rm}->{$dir} = 1;
3003 $self->SUPER::delete_entry($rpath, $self->{r}, $pbat, $self->{pool});
3004}
3005sub R {
3007 my ($self, $m) = @_;
3008 my ($dir, $file) = split_path($m->{file_b});
3009 my $pbat = $self->ensure_path($dir);
3010 my $fbat = $self->add_file($self->repo_path($m->{file_b}), $pbat,
3011 $self->url_path($m->{file_a}), $self->{r});
3012 print "\tR\t$m->{file_a} => $m->{file_b}\n" unless $::_q;
3013 $self->chg_file($fbat, $m);
3014 $self->close_file($fbat,undef,$self->{pool});
3015 ($dir, $file) = split_path($m->{file_a});
3017 $pbat = $self->ensure_path($dir);
3018 $self->delete_entry($m->{file_a}, $pbat);
3019}
3020sub M {
3022 my ($self, $m) = @_;
3023 my ($dir, $file) = split_path($m->{file_b});
3024 my $pbat = $self->ensure_path($dir);
3025 my $fbat = $self->open_file($self->repo_path($m->{file_b}),
3026 $pbat,$self->{r},$self->{pool});
3027 print "\t$m->{chg}\t$m->{file_b}\n" unless $::_q;
3028 $self->chg_file($fbat, $m);
3029 $self->close_file($fbat,undef,$self->{pool});
3030}
3031sub T { shift->M(@_) }
3033sub change_file_prop {
3035 my ($self, $fbat, $pname, $pval) = @_;
3036 $self->SUPER::change_file_prop($fbat, $pname, $pval, $self->{pool});
3037}
3038sub chg_file {
3040 my ($self, $fbat, $m) = @_;
3041 if ($m->{mode_b} =~ /755$/ && $m->{mode_a} !~ /755$/) {
3042 $self->change_file_prop($fbat,'svn:executable','*');
3043 } elsif ($m->{mode_b} !~ /755$/ && $m->{mode_a} =~ /755$/) {
3044 $self->change_file_prop($fbat,'svn:executable',undef);
3045 }
3046 my $fh = IO::File->new_tmpfile or croak $!;
3047 if ($m->{mode_b} =~ /^120/) {
3048 print $fh 'link ' or croak $!;
3049 $self->change_file_prop($fbat,'svn:special','*');
3050 } elsif ($m->{mode_a} =~ /^120/ && $m->{mode_b} !~ /^120/) {
3051 $self->change_file_prop($fbat,'svn:special',undef);
3052 }
3053 defined(my $pid = fork) or croak $!;
3054 if (!$pid) {
3055 open STDOUT, '>&', $fh or croak $!;
3056 exec qw/git-cat-file blob/, $m->{sha1_b} or croak $!;
3057 }
3058 waitpid $pid, 0;
3059 croak $? if $?;
3060 $fh->flush == 0 or croak $!;
3061 seek $fh, 0, 0 or croak $!;
3062 my $md5 = Digest::MD5->new;
3064 $md5->addfile($fh) or croak $!;
3065 seek $fh, 0, 0 or croak $!;
3066 my $exp = $md5->hexdigest;
3068 my $pool = SVN::Pool->new;
3069 my $atd = $self->apply_textdelta($fbat, undef, $pool);
3070 my $got = SVN::TxDelta::send_stream($fh, @$atd, $pool);
3071 die "Checksum mismatch\nexpected: $exp\ngot: $got\n" if ($got ne $exp);
3072 $pool->clear;
3073 close $fh or croak $!;
3075}
3076sub D {
3078 my ($self, $m) = @_;
3079 my ($dir, $file) = split_path($m->{file_b});
3080 my $pbat = $self->ensure_path($dir);
3081 print "\tD\t$m->{file_b}\n" unless $::_q;
3082 $self->delete_entry($m->{file_b}, $pbat);
3083}
3084sub close_edit {
3086 my ($self) = @_;
3087 my ($p,$bat) = ($self->{pool}, $self->{bat});
3088 foreach (sort { $b =~ tr#/#/# <=> $a =~ tr#/#/# } keys %$bat) {
3089 $self->close_directory($bat->{$_}, $p);
3090 }
3091 $self->SUPER::close_edit($p);
3092 $p->clear;
3093}
3094sub abort_edit {
3096 my ($self) = @_;
3097 $self->SUPER::abort_edit($self->{pool});
3098 $self->{pool}->clear;
3099}
3100# this drives the editor
3102sub apply_diff {
3103 my ($self, $tree_a, $tree_b) = @_;
3104 my @diff_tree = qw(diff-tree -z -r);
3105 if ($::_cp_similarity) {
3106 push @diff_tree, "-C$::_cp_similarity";
3107 } else {
3108 push @diff_tree, '-C';
3109 }
3110 push @diff_tree, '--find-copies-harder' if $::_find_copies_harder;
3111 push @diff_tree, "-l$::_l" if defined $::_l;
3112 push @diff_tree, $tree_a, $tree_b;
3113 my ($diff_fh, $ctx) = command_output_pipe(@diff_tree);
3114 my $nl = $/;
3115 local $/ = "\0";
3116 my $state = 'meta';
3117 my @mods;
3118 while (<$diff_fh>) {
3119 chomp $_; # this gets rid of the trailing "\0"
3120 if ($state eq 'meta' && /^:(\d{6})\s(\d{6})\s
3121 $::sha1\s($::sha1)\s
3122 ([MTCRAD])\d*$/xo) {
3123 push @mods, { mode_a => $1, mode_b => $2,
3124 sha1_b => $3, chg => $4 };
3125 if ($4 =~ /^(?:C|R)$/) {
3126 $state = 'file_a';
3127 } else {
3128 $state = 'file_b';
3129 }
3130 } elsif ($state eq 'file_a') {
3131 my $x = $mods[$#mods] or croak "Empty array\n";
3132 if ($x->{chg} !~ /^(?:C|R)$/) {
3133 croak "Error parsing $_, $x->{chg}\n";
3134 }
3135 $x->{file_a} = $_;
3136 $state = 'file_b';
3137 } elsif ($state eq 'file_b') {
3138 my $x = $mods[$#mods] or croak "Empty array\n";
3139 if (exists $x->{file_a} && $x->{chg} !~ /^(?:C|R)$/) {
3140 croak "Error parsing $_, $x->{chg}\n";
3141 }
3142 if (!exists $x->{file_a} && $x->{chg} =~ /^(?:C|R)$/) {
3143 croak "Error parsing $_, $x->{chg}\n";
3144 }
3145 $x->{file_b} = $_;
3146 $state = 'meta';
3147 } else {
3148 croak "Error parsing $_\n";
3149 }
3150 }
3151 command_close_pipe($diff_fh, $ctx);
3152 $/ = $nl;
3153 my %o = ( D => 1, R => 0, C => -1, A => 3, M => 3, T => 3 );
3155 foreach my $m (sort { $o{$a->{chg}} <=> $o{$b->{chg}} } @mods) {
3156 my $f = $m->{chg};
3157 if (defined $o{$f}) {
3158 $self->$f($m);
3159 } else {
3160 fatal("Invalid change type: $f\n");
3161 }
3162 }
3163 $self->rmdirs($tree_b) if $::_rmdir;
3164 if (@mods == 0) {
3165 $self->abort_edit;
3166 } else {
3167 $self->close_edit;
3168 }
3169 \@mods;
3170}
3171package Git::SVN::Ra;
3173use vars qw/@ISA $config_dir/;
3174use strict;
3175use warnings;
3176my ($can_do_switch);
3177BEGIN {
3179 # enforce temporary pool usage for some simple functions
3180 my $e;
3181 foreach (qw/get_latest_revnum rev_proplist get_file
3182 check_path get_dir get_uuid get_repos_root/) {
3183 $e .= "sub $_ {
3184 my \$self = shift;
3185 my \$pool = SVN::Pool->new;
3186 my \@ret = \$self->SUPER::$_(\@_,\$pool);
3187 \$pool->clear;
3188 wantarray ? \@ret : \$ret[0]; }\n";
3189 }
3190 eval $e;
3191}
3192sub new {
3194 my ($class, $url) = @_;
3195 SVN::_Core::svn_config_ensure($config_dir, undef);
3196 my ($baton, $callbacks) = SVN::Core::auth_open_helper([
3197 SVN::Client::get_simple_provider(),
3198 SVN::Client::get_ssl_server_trust_file_provider(),
3199 SVN::Client::get_simple_prompt_provider(
3200 \&Git::SVN::Prompt::simple, 2),
3201 SVN::Client::get_ssl_client_cert_prompt_provider(
3202 \&Git::SVN::Prompt::ssl_client_cert, 2),
3203 SVN::Client::get_ssl_client_cert_pw_prompt_provider(
3204 \&Git::SVN::Prompt::ssl_client_cert_pw, 2),
3205 SVN::Client::get_username_provider(),
3206 SVN::Client::get_ssl_server_trust_prompt_provider(
3207 \&Git::SVN::Prompt::ssl_server_trust),
3208 SVN::Client::get_username_prompt_provider(
3209 \&Git::SVN::Prompt::username, 2),
3210 ]);
3211 my $config = SVN::Core::config_get_config($config_dir);
3212 my $self = SVN::Ra->new(url => $url, auth => $baton,
3213 config => $config,
3214 pool => SVN::Pool->new,
3215 auth_provider_callbacks => $callbacks);
3216 $self->{svn_path} = $url;
3217 $self->{repos_root} = $self->get_repos_root;
3218 $self->{svn_path} =~ s#^\Q$self->{repos_root}\E/*##;
3219 bless $self, $class;
3220}
3221sub DESTROY {
3223 my $self = shift;
3224 $self->{pool}->clear if $self->{pool};
3225 $self->SUPER::DESTROY(@_);
3226}
3227sub dup {
3229 my ($self) = @_;
3230 my $dup = SVN::Ra->new(pool => SVN::Pool->new,
3231 map { $_ => $self->{$_} } qw/config url
3232 auth auth_provider_callbacks repos_root svn_path/);
3233 bless $dup, ref $self;
3234}
3235sub get_log {
3237 my ($self, @args) = @_;
3238 my $pool = SVN::Pool->new;
3239 $args[4]-- if $args[4] && ! $::_follow_parent;
3240 splice(@args, 3, 1) if ($SVN::Core::VERSION le '1.2.0');
3241 my $ret = $self->SUPER::get_log(@args, $pool);
3242 $pool->clear;
3243 $ret;
3244}
3245sub get_commit_editor {
3247 my ($self, $log, $cb, $pool) = @_;
3248 my @lock = $SVN::Core::VERSION ge '1.2.0' ? (undef, 0) : ();
3249 $self->SUPER::get_commit_editor($log, $cb, @lock, $pool);
3250}
3251sub uuid {
3253 my ($self) = @_;
3254 $self->{uuid} ||= $self->get_uuid;
3255}
3256sub gs_do_update {
3258 my ($self, $rev_a, $rev_b, $path, $recurse, $editor) = @_;
3259 my $pool = SVN::Pool->new;
3260 my $reporter = $self->do_update($rev_b, $path, $recurse,
3261 $editor, $pool);
3262 my @lock = $SVN::Core::VERSION ge '1.2.0' ? (undef) : ();
3263 my $new = ($rev_a == $rev_b);
3264 $reporter->set_path($path, $rev_a, $new, @lock, $pool);
3265 $reporter->finish_report($pool);
3266 $pool->clear;
3267 $editor->{git_commit_ok};
3268}
3269sub gs_do_switch {
3271 my ($self, $rev_a, $rev_b, $path, $recurse, $url_b, $editor) = @_;
3272 my $pool = SVN::Pool->new;
3273 my $reporter = $self->do_switch($rev_b, $path, $recurse,
3274 $url_b, $editor, $pool);
3275 my @lock = $SVN::Core::VERSION ge '1.2.0' ? (undef) : ();
3276 $reporter->set_path($path, $rev_a, 0, @lock, $pool);
3277 $reporter->finish_report($pool);
3278 $pool->clear;
3279 $editor->{git_commit_ok};
3280}
3281sub can_do_switch {
3283 my $self = shift;
3284 unless (defined $can_do_switch) {
3285 my $pool = SVN::Pool->new;
3286 my $rep = eval {
3287 $self->do_switch(1, '', 0, $self->{url},
3288 SVN::Delta::Editor->new, $pool);
3289 };
3290 if ($@) {
3291 $can_do_switch = 0;
3292 } else {
3293 $rep->abort_report($pool);
3294 $can_do_switch = 1;
3295 }
3296 $pool->clear;
3297 }
3298 $can_do_switch;
3299}
3300package Git::SVN::Log;
3302use strict;
3303use warnings;
3304use POSIX qw/strftime/;
3305use vars qw/$TZ $limit $color $pager $non_recursive $verbose $oneline
3306 %rusers $show_commit $incremental/;
3307my $l_fmt;
3308sub cmt_showable {
3310 my ($c) = @_;
3311 return 1 if defined $c->{r};
3312 if ($c->{l} && $c->{l}->[-1] eq "...\n" &&
3313 $c->{a_raw} =~ /\@([a-f\d\-]+)>$/) {
3314 my @log = command(qw/cat-file commit/, $c->{c});
3315 shift @log while ($log[0] ne "\n");
3316 shift @log;
3317 @{$c->{l}} = grep !/^git-svn-id: /, @log;
3318 (undef, $c->{r}, undef) = ::extract_metadata(
3320 (grep(/^git-svn-id: /, @log))[-1]);
3321 }
3322 return defined $c->{r};
3323}
3324sub log_use_color {
3326 return 1 if $color;
3327 my ($dc, $dcvar);
3328 $dcvar = 'color.diff';
3329 $dc = `git-config --get $dcvar`;
3330 if ($dc eq '') {
3331 # nothing at all; fallback to "diff.color"
3332 $dcvar = 'diff.color';
3333 $dc = `git-config --get $dcvar`;
3334 }
3335 chomp($dc);
3336 if ($dc eq 'auto') {
3337 my $pc;
3338 $pc = `git-config --get color.pager`;
3339 if ($pc eq '') {
3340 # does not have it -- fallback to pager.color
3341 $pc = `git-config --bool --get pager.color`;
3342 }
3343 else {
3344 $pc = `git-config --bool --get color.pager`;
3345 if ($?) {
3346 $pc = 'false';
3347 }
3348 }
3349 chomp($pc);
3350 if (-t *STDOUT || (defined $pager && $pc eq 'true')) {
3351 return ($ENV{TERM} && $ENV{TERM} ne 'dumb');
3352 }
3353 return 0;
3354 }
3355 return 0 if $dc eq 'never';
3356 return 1 if $dc eq 'always';
3357 chomp($dc = `git-config --bool --get $dcvar`);
3358 return ($dc eq 'true');
3359}
3360sub git_svn_log_cmd {
3362 my ($r_min, $r_max) = @_;
3363 my $gs = Git::SVN->_new;
3364 my @cmd = (qw/log --abbrev-commit --pretty=raw --default/,
3365 $gs->refname);
3366 push @cmd, '-r' unless $non_recursive;
3367 push @cmd, qw/--raw --name-status/ if $verbose;
3368 push @cmd, '--color' if log_use_color();
3369 return @cmd unless defined $r_max;
3370 if ($r_max == $r_min) {
3371 push @cmd, '--max-count=1';
3372 if (my $c = $gs->rev_db_get($r_max)) {
3373 push @cmd, $c;
3374 }
3375 } else {
3376 my ($c_min, $c_max);
3377 $c_max = $gs->rev_db_get($r_max);
3378 $c_min = $gs->rev_db_get($r_min);
3379 if (defined $c_min && defined $c_max) {
3380 if ($r_max > $r_max) {
3381 push @cmd, "$c_min..$c_max";
3382 } else {
3383 push @cmd, "$c_max..$c_min";
3384 }
3385 } elsif ($r_max > $r_min) {
3386 push @cmd, $c_max;
3387 } else {
3388 push @cmd, $c_min;
3389 }
3390 }
3391 return @cmd;
3392}
3393# adapted from pager.c
3395sub config_pager {
3396 $pager ||= $ENV{GIT_PAGER} || $ENV{PAGER};
3397 if (!defined $pager) {
3398 $pager = 'less';
3399 } elsif (length $pager == 0 || $pager eq 'cat') {
3400 $pager = undef;
3401 }
3402}
3403sub run_pager {
3405 return unless -t *STDOUT;
3406 pipe my $rfd, my $wfd or return;
3407 defined(my $pid = fork) or ::fatal "Can't fork: $!\n";
3408 if (!$pid) {
3409 open STDOUT, '>&', $wfd or
3410 ::fatal "Can't redirect to stdout: $!\n";
3411 return;
3412 }
3413 open STDIN, '<&', $rfd or ::fatal "Can't redirect stdin: $!\n";
3414 $ENV{LESS} ||= 'FRSX';
3415 exec $pager or ::fatal "Can't run pager: $! ($pager)\n";
3416}
3417sub get_author_info {
3419 my ($dest, $author, $t, $tz) = @_;
3420 $author =~ s/(?:^\s*|\s*$)//g;
3421 $dest->{a_raw} = $author;
3422 my $au;
3423 if ($_authors) {
3424 $au = $rusers{$author} || undef;
3425 }
3426 if (!$au) {
3427 ($au) = ($author =~ /<([^>]+)\@[^>]+>$/);
3428 }
3429 $dest->{t} = $t;
3430 $dest->{tz} = $tz;
3431 $dest->{a} = $au;
3432 # Date::Parse isn't in the standard Perl distro :(
3433 if ($tz =~ s/^\+//) {
3434 $t += ::tz_to_s_offset($tz);
3435 } elsif ($tz =~ s/^\-//) {
3436 $t -= ::tz_to_s_offset($tz);
3437 }
3438 $dest->{t_utc} = $t;
3439}
3440sub process_commit {
3442 my ($c, $r_min, $r_max, $defer) = @_;
3443 if (defined $r_min && defined $r_max) {
3444 if ($r_min == $c->{r} && $r_min == $r_max) {
3445 show_commit($c);
3446 return 0;
3447 }
3448 return 1 if $r_min == $r_max;
3449 if ($r_min < $r_max) {
3450 # we need to reverse the print order
3451 return 0 if (defined $limit && --$limit < 0);
3452 push @$defer, $c;
3453 return 1;
3454 }
3455 if ($r_min != $r_max) {
3456 return 1 if ($r_min < $c->{r});
3457 return 1 if ($r_max > $c->{r});
3458 }
3459 }
3460 return 0 if (defined $limit && --$limit < 0);
3461 show_commit($c);
3462 return 1;
3463}
3464sub show_commit {
3466 my $c = shift;
3467 if ($oneline) {
3468 my $x = "\n";
3469 if (my $l = $c->{l}) {
3470 while ($l->[0] =~ /^\s*$/) { shift @$l }
3471 $x = $l->[0];
3472 }
3473 $l_fmt ||= 'A' . length($c->{r});
3474 print 'r',pack($l_fmt, $c->{r}),' | ';
3475 print "$c->{c} | " if $show_commit;
3476 print $x;
3477 } else {
3478 show_commit_normal($c);
3479 }
3480}
3481sub show_commit_changed_paths {
3483 my ($c) = @_;
3484 return unless $c->{changed};
3485 print "Changed paths:\n", @{$c->{changed}};
3486}
3487sub show_commit_normal {
3489 my ($c) = @_;
3490 print '-' x72, "\nr$c->{r} | ";
3491 print "$c->{c} | " if $show_commit;
3492 print "$c->{a} | ", strftime("%Y-%m-%d %H:%M:%S %z (%a, %d %b %Y)",
3493 localtime($c->{t_utc})), ' | ';
3494 my $nr_line = 0;
3495 if (my $l = $c->{l}) {
3497 while ($l->[$#$l] eq "\n" && $#$l > 0
3498 && $l->[($#$l - 1)] eq "\n") {
3499 pop @$l;
3500 }
3501 $nr_line = scalar @$l;
3502 if (!$nr_line) {
3503 print "1 line\n\n\n";
3504 } else {
3505 if ($nr_line == 1) {
3506 $nr_line = '1 line';
3507 } else {
3508 $nr_line .= ' lines';
3509 }
3510 print $nr_line, "\n";
3511 show_commit_changed_paths($c);
3512 print "\n";
3513 print $_ foreach @$l;
3514 }
3515 } else {
3516 print "1 line\n";
3517 show_commit_changed_paths($c);
3518 print "\n";
3519 }
3521 foreach my $x (qw/raw diff/) {
3522 if ($c->{$x}) {
3523 print "\n";
3524 print $_ foreach @{$c->{$x}}
3525 }
3526 }
3527}
3528sub cmd_show_log {
3530 my (@args) = @_;
3531 my ($r_min, $r_max);
3532 my $r_last = -1; # prevent dupes
3533 if (defined $TZ) {
3534 $ENV{TZ} = $TZ;
3535 } else {
3536 delete $ENV{TZ};
3537 }
3538 if (defined $::_revision) {
3539 if ($::_revision =~ /^(\d+):(\d+)$/) {
3540 ($r_min, $r_max) = ($1, $2);
3541 } elsif ($::_revision =~ /^\d+$/) {
3542 $r_min = $r_max = $::_revision;
3543 } else {
3544 ::fatal "-r$::_revision is not supported, use ",
3545 "standard \'git log\' arguments instead\n";
3546 }
3547 }
3548 config_pager();
3550 @args = (git_svn_log_cmd($r_min, $r_max), @args);
3551 my $log = command_output_pipe(@args);
3552 run_pager();
3553 my (@k, $c, $d);
3554 my $esc_color = qr/(?:\033\[(?:(?:\d+;)*\d*)?m)*/;
3555 while (<$log>) {
3556 if (/^${esc_color}commit ($::sha1_short)/o) {
3557 my $cmt = $1;
3558 if ($c && cmt_showable($c) && $c->{r} != $r_last) {
3559 $r_last = $c->{r};
3560 process_commit($c, $r_min, $r_max, \@k) or
3561 goto out;
3562 }
3563 $d = undef;
3564 $c = { c => $cmt };
3565 } elsif (/^${esc_color}author (.+) (\d+) ([\-\+]?\d+)$/o) {
3566 get_author_info($c, $1, $2, $3);
3567 } elsif (/^${esc_color}(?:tree|parent|committer) /o) {
3568 # ignore
3569 } elsif (/^${esc_color}:\d{6} \d{6} $::sha1_short/o) {
3570 push @{$c->{raw}}, $_;
3571 } elsif (/^${esc_color}[ACRMDT]\t/) {
3572 # we could add $SVN->{svn_path} here, but that requires
3573 # remote access at the moment (repo_path_split)...
3574 s#^(${esc_color})([ACRMDT])\t#$1 $2 #o;
3575 push @{$c->{changed}}, $_;
3576 } elsif (/^${esc_color}diff /o) {
3577 $d = 1;
3578 push @{$c->{diff}}, $_;
3579 } elsif ($d) {
3580 push @{$c->{diff}}, $_;
3581 } elsif (/^${esc_color} (git-svn-id:.+)$/o) {
3582 ($c->{url}, $c->{r}, undef) = ::extract_metadata($1);
3583 } elsif (s/^${esc_color} //o) {
3584 push @{$c->{l}}, $_;
3585 }
3586 }
3587 if ($c && defined $c->{r} && $c->{r} != $r_last) {
3588 $r_last = $c->{r};
3589 process_commit($c, $r_min, $r_max, \@k);
3590 }
3591 if (@k) {
3592 my $swap = $r_max;
3593 $r_max = $r_min;
3594 $r_min = $swap;
3595 process_commit($_, $r_min, $r_max) foreach reverse @k;
3596 }
3597out:
3598 close $log;
3599 print '-' x72,"\n" unless $incremental || $oneline;
3600}
3601__END__
3603Data structures:
3605$log_entry hashref as returned by libsvn_log_entry()
3607{
3608 log => 'whitespace-formatted log entry
3609', # trailing newline is preserved
3610 revision => '8', # integer
3611 date => '2004-02-24T17:01:44.108345Z', # commit date
3612 author => 'committer name'
3613};
3614@mods = array of diff-index line hashes, each element represents one line
3616 of diff-index output
3617diff-index line ($m hash)
3619{
3620 mode_a => first column of diff-index output, no leading ':',
3621 mode_b => second column of diff-index output,
3622 sha1_b => sha1sum of the final blob,
3623 chg => change type [MCRADT],
3624 file_a => original file name of a file (iff chg is 'C' or 'R')
3625 file_b => new/current file name of a file (any chg)
3626}
3627;
3628# retval of read_url_paths{,_all}();
3630$l_map = {
3631 # repository root url
3632 'https://svn.musicpd.org' => {
3633 # repository path # GIT_SVN_ID
3634 'mpd/trunk' => 'trunk',
3635 'mpd/tags/0.11.5' => 'tags/0.11.5',
3636 },
3637}
3638Notes:
3640 I don't trust the each() function on unless I created %hash myself
3641 because the internal iterator may not have started at base.