f01fb9a35d55dd2e6499ef0df884188f5c839910
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 $_authors %users/;
13$AUTHOR = 'Eric Wong <normalperson@yhbt.net>';
14$VERSION = '@@GIT_VERSION@@';
15$ENV{GIT_DIR} ||= '.git';
17$Git::SVN::default_repo_id = 'git-svn';
18$Git::SVN::default_ref_id = $ENV{GIT_SVN_ID} || 'git-svn';
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
26sub fatal (@) { print STDERR @_; exit 1 }
28require SVN::Core; # use()-ing this causes segfaults for me... *shrug*
29require SVN::Ra;
30require SVN::Delta;
31if ($SVN::Core::VERSION lt '1.1.0') {
32 fatal "Need SVN::Core 1.1.0 or better (got $SVN::Core::VERSION)\n";
33}
34push @Git::SVN::Ra::ISA, 'SVN::Ra';
35push @SVN::Git::Editor::ISA, 'SVN::Delta::Editor';
36push @SVN::Git::Fetcher::ISA, 'SVN::Delta::Editor';
37use Carp qw/croak/;
38use IO::File qw//;
39use File::Basename qw/dirname basename/;
40use File::Path qw/mkpath/;
41use Getopt::Long qw/:config gnu_getopt no_ignore_case auto_abbrev pass_through/;
42use IPC::Open3;
43use Git;
44BEGIN {
46 my $s;
47 foreach (qw/command command_oneline command_noisy command_output_pipe
48 command_input_pipe command_close_pipe/) {
49 $s .= "*SVN::Git::Editor::$_ = *SVN::Git::Fetcher::$_ = ".
50 "*Git::SVN::Migration::$_ = ".
51 "*Git::SVN::Log::$_ = *Git::SVN::$_ = *$_ = *Git::$_; ";
52 }
53 eval $s;
54}
55my ($SVN);
57my $_optimize_commits = 1 unless $ENV{GIT_SVN_NO_OPTIMIZE_COMMITS};
59$sha1 = qr/[a-f\d]{40}/;
60$sha1_short = qr/[a-f\d]{4,40}/;
61my ($_stdin, $_help, $_edit,
62 $_repack, $_repack_nr, $_repack_flags,
63 $_message, $_file, $_no_metadata,
64 $_template, $_shared,
65 $_version, $_upgrade,
66 $_merge, $_strategy, $_dry_run,
67 $_prefix);
68my %remote_opts = ( 'username=s' => \$Git::SVN::Prompt::_username,
70 'config-dir=s' => \$Git::SVN::Ra::config_dir,
71 'no-auth-cache' => \$Git::SVN::Prompt::_no_auth_cache );
72my %fc_opts = ( 'follow-parent|follow' => \$_follow_parent,
73 'authors-file|A=s' => \$_authors,
74 'repack:i' => \$_repack,
75 'no-metadata' => \$_no_metadata,
76 'quiet|q' => \$_q,
77 'repack-flags|repack-args|repack-opts=s' => \$_repack_flags,
78 %remote_opts );
79my ($_trunk, $_tags, $_branches);
81my %multi_opts = ( 'trunk|T=s' => \$_trunk,
82 'tags|t=s' => \$_tags,
83 'branches|b=s' => \$_branches );
84my %init_opts = ( 'template=s' => \$_template, 'shared' => \$_shared );
85my %cmt_opts = ( 'edit|e' => \$_edit,
86 'rmdir' => \$_rmdir,
87 'find-copies-harder' => \$_find_copies_harder,
88 'l=i' => \$_l,
89 'copy-similarity|C=i'=> \$_cp_similarity
90);
91my %cmd = (
93 fetch => [ \&cmd_fetch, "Download new revisions from SVN",
94 { 'revision|r=s' => \$_revision, %fc_opts } ],
95 init => [ \&cmd_init, "Initialize a repo for tracking" .
96 " (requires URL argument)",
97 \%init_opts ],
98 dcommit => [ \&cmd_dcommit,
99 'Commit several diffs to merge with upstream',
100 { 'merge|m|M' => \$_merge,
101 'strategy|s=s' => \$_strategy,
102 'dry-run|n' => \$_dry_run,
103 %cmt_opts, %fc_opts } ],
104 'set-tree' => [ \&cmd_set_tree,
105 "Set an SVN repository to a git tree-ish",
106 { 'stdin|' => \$_stdin, %cmt_opts, %fc_opts, } ],
107 'show-ignore' => [ \&cmd_show_ignore, "Show svn:ignore listings",
108 { 'revision|r=i' => \$_revision } ],
109 rebuild => [ \&cmd_rebuild, "Rebuild git-svn metadata (after git clone)",
110 { 'copy-remote|remote=s' => \$_cp_remote,
111 'upgrade' => \$_upgrade } ],
112 'multi-init' => [ \&cmd_multi_init,
113 'Initialize multiple trees (like git-svnimport)',
114 { %multi_opts, %init_opts, %remote_opts,
115 'revision|r=i' => \$_revision,
116 'prefix=s' => \$_prefix,
117 } ],
118 'multi-fetch' => [ \&cmd_multi_fetch,
119 'Fetch multiple trees (like git-svnimport)',
120 \%fc_opts ],
121 'migrate' => [ sub { },
122 # no-op, we automatically run this anyways,
123 'Migrate configuration/metadata/layout from
124 previous versions of git-svn',
125 \%remote_opts ],
126 'log' => [ \&Git::SVN::Log::cmd_show_log, 'Show commit logs',
127 { 'limit=i' => \$Git::SVN::Log::limit,
128 'revision|r=s' => \$_revision,
129 'verbose|v' => \$Git::SVN::Log::verbose,
130 'incremental' => \$Git::SVN::Log::incremental,
131 'oneline' => \$Git::SVN::Log::oneline,
132 'show-commit' => \$Git::SVN::Log::show_commit,
133 'non-recursive' => \$Git::SVN::Log::non_recursive,
134 'authors-file|A=s' => \$_authors,
135 'color' => \$Git::SVN::Log::color,
136 'pager=s' => \$Git::SVN::Log::pager,
137 } ],
138 'commit-diff' => [ \&cmd_commit_diff,
139 'Commit a diff between two trees',
140 { 'message|m=s' => \$_message,
141 'file|F=s' => \$_file,
142 'revision|r=s' => \$_revision,
143 %cmt_opts } ],
144);
145my $cmd;
147for (my $i = 0; $i < @ARGV; $i++) {
148 if (defined $cmd{$ARGV[$i]}) {
149 $cmd = $ARGV[$i];
150 splice @ARGV, $i, 1;
151 last;
152 }
153};
154my %opts = %{$cmd{$cmd}->[2]} if (defined $cmd);
156read_repo_config(\%opts);
158my $rv = GetOptions(%opts, 'help|H|h' => \$_help,
159 'version|V' => \$_version,
160 'minimize-connections' =>
161 \$Git::SVN::Migration::_minimize,
162 'id|i=s' => \$Git::SVN::default_ref_id);
163exit 1 if (!$rv && $cmd ne 'log');
164usage(0) if $_help;
166version() if $_version;
167usage(1) unless defined $cmd;
168load_authors() if $_authors;
169unless ($cmd =~ /^(?:init|rebuild|multi-init|commit-diff)$/) {
170 Git::SVN::Migration::migration_check();
171}
172eval {
173 Git::SVN::verify_remotes_sanity();
174 $cmd{$cmd}->[0]->(@ARGV);
175};
176fatal $@ if $@;
177exit 0;
178####################### primary functions ######################
180sub usage {
181 my $exit = shift || 0;
182 my $fd = $exit ? \*STDERR : \*STDOUT;
183 print $fd <<"";
184git-svn - bidirectional operations between a single Subversion tree and git
185Usage: $0 <command> [options] [arguments]\n
186 print $fd "Available commands:\n" unless $cmd;
188 foreach (sort keys %cmd) {
190 next if $cmd && $cmd ne $_;
191 print $fd ' ',pack('A17',$_),$cmd{$_}->[1],"\n";
192 foreach (keys %{$cmd{$_}->[2]}) {
193 # prints out arguments as they should be passed:
194 my $x = s#[:=]s$## ? '<arg>' : s#[:=]i$## ? '<num>' : '';
195 print $fd ' ' x 21, join(', ', map { length $_ > 1 ?
196 "--$_" : "-$_" }
197 split /\|/,$_)," $x\n";
198 }
199 }
200 print $fd <<"";
201\nGIT_SVN_ID may be set in the environment or via the --id/-i switch to an
202arbitrary identifier if you're tracking multiple SVN branches/repositories in
203one git repository and want to keep them separate. See git-svn(1) for more
204information.
205 exit $exit;
207}
208sub version {
210 print "git-svn version $VERSION (svn $SVN::Core::VERSION)\n";
211 exit 0;
212}
213sub cmd_rebuild {
215 my $url = shift;
216 my $gs = $url ? Git::SVN->init($url)
217 : eval { Git::SVN->new };
218 $gs ||= Git::SVN->_new;
219 if (!verify_ref($gs->refname.'^0')) {
220 $gs->copy_remote_ref;
221 }
222 my ($rev_list, $ctx) = command_output_pipe("rev-list", $gs->refname);
224 my $latest;
225 my $svn_uuid;
226 while (<$rev_list>) {
227 chomp;
228 my $c = $_;
229 fatal "Non-SHA1: $c\n" unless $c =~ /^$sha1$/o;
230 my ($url, $rev, $uuid) = cmt_metadata($c);
231 # ignore merges (from set-tree)
233 next if (!defined $rev || !$uuid);
234 # if we merged or otherwise started elsewhere, this is
236 # how we break out of it
237 if ((defined $svn_uuid && ($uuid ne $svn_uuid)) ||
238 ($gs->{url} && $url && ($url ne $gs->{url}))) {
239 next;
240 }
241 unless (defined $latest) {
243 if (!$gs->{url} && !$url) {
244 fatal "SVN repository location required\n";
245 }
246 $gs = Git::SVN->init($url);
247 $latest = $rev;
248 }
249 $gs->rev_db_set($rev, $c);
250 print "r$rev = $c\n";
251 }
252 command_close_pipe($rev_list, $ctx);
253}
254sub do_git_init_db {
256 unless (-d $ENV{GIT_DIR}) {
257 my @init_db = ('init');
258 push @init_db, "--template=$_template" if defined $_template;
259 push @init_db, "--shared" if defined $_shared;
260 command_noisy(@init_db);
261 }
262}
263sub cmd_init {
265 my $url = shift or die "SVN repository location required " .
266 "as a command-line argument\n";
267 if (my $repo_path = shift) {
268 unless (-d $repo_path) {
269 mkpath([$repo_path]);
270 }
271 chdir $repo_path or croak $!;
272 $ENV{GIT_DIR} = $repo_path . "/.git";
273 }
274 do_git_init_db();
275 Git::SVN->init($url);
277}
278sub cmd_fetch {
280 my $gs = Git::SVN->new;
281 $gs->fetch(@_);
282 if ($gs->{last_commit} && !verify_ref('refs/heads/master^0')) {
283 command_noisy(qw(update-ref refs/heads/master),
284 $gs->{last_commit});
285 }
286}
287sub cmd_set_tree {
289 my (@commits) = @_;
290 if ($_stdin || !@commits) {
291 print "Reading from stdin...\n";
292 @commits = ();
293 while (<STDIN>) {
294 if (/\b($sha1_short)\b/o) {
295 unshift @commits, $1;
296 }
297 }
298 }
299 my @revs;
300 foreach my $c (@commits) {
301 my @tmp = command('rev-parse',$c);
302 if (scalar @tmp == 1) {
303 push @revs, $tmp[0];
304 } elsif (scalar @tmp > 1) {
305 push @revs, reverse(command('rev-list',@tmp));
306 } else {
307 fatal "Failed to rev-parse $c\n";
308 }
309 }
310 my $gs = Git::SVN->new;
311 my ($r_last, $cmt_last) = $gs->last_rev_commit;
312 $gs->fetch;
313 if ($r_last != $gs->{last_rev}) {
314 fatal "There are new revisions that were fetched ",
315 "and need to be merged (or acknowledged) ",
316 "before committing.\nlast rev: $r_last\n",
317 " current: $gs->{last_rev}\n";
318 }
319 $gs->set_tree($_) foreach @revs;
320 print "Done committing ",scalar @revs," revisions to SVN\n";
321}
322sub cmd_dcommit {
324 my $head = shift;
325 my $gs = Git::SVN->new;
326 $head ||= 'HEAD';
327 my @refs = command(qw/rev-list --no-merges/, $gs->refname."..$head");
328 my $last_rev;
329 foreach my $d (reverse @refs) {
330 if (!verify_ref("$d~1")) {
331 fatal "Commit $d\n",
332 "has no parent commit, and therefore ",
333 "nothing to diff against.\n",
334 "You should be working from a repository ",
335 "originally created by git-svn\n";
336 }
337 unless (defined $last_rev) {
338 (undef, $last_rev, undef) = cmt_metadata("$d~1");
339 unless (defined $last_rev) {
340 fatal "Unable to extract revision information ",
341 "from commit $d~1\n";
342 }
343 }
344 if ($_dry_run) {
345 print "diff-tree $d~1 $d\n";
346 } else {
347 my $log = get_commit_entry($d)->{log};
348 my $ra = $gs->ra;
349 my $pool = SVN::Pool->new;
350 my %ed_opts = ( r => $last_rev,
351 ra => $ra->dup,
352 svn_path => $ra->{svn_path} );
353 my $ed = SVN::Git::Editor->new(\%ed_opts,
354 $ra->get_commit_editor($log,
355 sub { print "Committed r$_[0]\n";
356 $last_rev = $_[0]; }),
357 $pool);
358 my $mods = $ed->apply_diff("$d~1", $d);
359 if (@$mods == 0) {
360 print "No changes\n$d~1 == $d\n";
361 }
362 }
363 }
364 return if $_dry_run;
365 $gs->fetch;
366 # we always want to rebase against the current HEAD, not any
367 # head that was passed to us
368 my @diff = command('diff-tree', 'HEAD', $gs->refname, '--');
369 my @finish;
370 if (@diff) {
371 @finish = qw/rebase/;
372 push @finish, qw/--merge/ if $_merge;
373 push @finish, "--strategy=$_strategy" if $_strategy;
374 print STDERR "W: HEAD and ", $gs->refname, " differ, ",
375 "using @finish:\n", "@diff";
376 } else {
377 print "No changes between current HEAD and ",
378 $gs->refname, "\nResetting to the latest ",
379 $gs->refname, "\n";
380 @finish = qw/reset --mixed/;
381 }
382 command_noisy(@finish, $gs->refname);
383}
384sub cmd_show_ignore {
386 my $gs = Git::SVN->new;
387 my $r = (defined $_revision ? $_revision : $gs->ra->get_latest_revnum);
388 $gs->traverse_ignore(\*STDOUT, '', $r);
389}
390sub cmd_multi_init {
392 my $url = shift;
393 unless (defined $_trunk || defined $_branches || defined $_tags) {
394 usage(1);
395 }
396 do_git_init_db();
397 $_prefix = '' unless defined $_prefix;
398 $url =~ s#/+$## if defined $url;
399 if (defined $_trunk) {
400 my $trunk_ref = $_prefix . 'trunk';
401 # try both old-style and new-style lookups:
402 my $gs_trunk = eval { Git::SVN->new($trunk_ref) };
403 unless ($gs_trunk) {
404 my ($trunk_url, $trunk_path) =
405 complete_svn_url($url, $_trunk);
406 $gs_trunk = Git::SVN->init($trunk_url, $trunk_path,
407 undef, $trunk_ref);
408 }
409 }
410 return unless defined $_branches || defined $_tags;
411 my $ra = $url ? Git::SVN::Ra->new($url) : undef;
412 complete_url_ls_init($ra, $_branches, '--branches/-b', $_prefix);
413 complete_url_ls_init($ra, $_tags, '--tags/-t', $_prefix . 'tags/');
414}
415sub cmd_multi_fetch {
417 my @gs;
418 foreach (command(qw/config -l/)) {
419 next unless m!^svn-remote\.(.+)\.fetch=
420 \s*(.*)\s*:\s*refs/remotes/(.+)\s*$!x;
421 my ($repo_id, $path, $ref_id) = ($1, $2, $3);
422 push @gs, Git::SVN->new($ref_id, $repo_id, $path);
423 }
424 foreach (@gs) {
425 $_->fetch;
426 }
427}
428# this command is special because it requires no metadata
430sub cmd_commit_diff {
431 my ($ta, $tb, $url) = @_;
432 my $usage = "Usage: $0 commit-diff -r<revision> ".
433 "<tree-ish> <tree-ish> [<URL>]\n";
434 fatal($usage) if (!defined $ta || !defined $tb);
435 if (!defined $url) {
436 my $gs = eval { Git::SVN->new };
437 if (!$gs) {
438 fatal("Needed URL or usable git-svn --id in ",
439 "the command-line\n", $usage);
440 }
441 $url = $gs->{url};
442 }
443 unless (defined $_revision) {
444 fatal("-r|--revision is a required argument\n", $usage);
445 }
446 if (defined $_message && defined $_file) {
447 fatal("Both --message/-m and --file/-F specified ",
448 "for the commit message.\n",
449 "I have no idea what you mean\n");
450 }
451 if (defined $_file) {
452 $_message = file_to_s($_file);
453 } else {
454 $_message ||= get_commit_entry($tb)->{log};
455 }
456 my $ra ||= Git::SVN::Ra->new($url);
457 my $r = $_revision;
458 if ($r eq 'HEAD') {
459 $r = $ra->get_latest_revnum;
460 } elsif ($r !~ /^\d+$/) {
461 die "revision argument: $r not understood by git-svn\n";
462 }
463 my $pool = SVN::Pool->new;
464 my %ed_opts = ( r => $r,
465 ra => $ra->dup,
466 svn_path => $ra->{svn_path} );
467 my $ed = SVN::Git::Editor->new(\%ed_opts,
468 $ra->get_commit_editor($_message,
469 sub { print "Committed r$_[0]\n" }),
470 $pool);
471 my $mods = $ed->apply_diff($ta, $tb);
472 if (@$mods == 0) {
473 print "No changes\n$ta == $tb\n";
474 }
475 $pool->clear;
476}
477########################### utility functions #########################
479sub complete_svn_url {
481 my ($url, $path) = @_;
482 $path =~ s#/+$##;
483 if ($path !~ m#^[a-z\+]+://#) {
484 if (!defined $url || $url !~ m#^[a-z\+]+://#) {
485 fatal("E: '$path' is not a complete URL ",
486 "and a separate URL is not specified\n");
487 }
488 return ($url, $path);
489 }
490 return ($path, '');
491}
492sub complete_url_ls_init {
494 my ($ra, $repo_path, $switch, $pfx) = @_;
495 unless ($repo_path) {
496 print STDERR "W: $switch not specified\n";
497 return;
498 }
499 $repo_path =~ s#/+$##;
500 if ($repo_path =~ m#^[a-z\+]+://#) {
501 $ra = Git::SVN::Ra->new($repo_path);
502 $repo_path = '';
503 } else {
504 $repo_path =~ s#^/+##;
505 unless ($ra) {
506 fatal("E: '$repo_path' is not a complete URL ",
507 "and a separate URL is not specified\n");
508 }
509 }
510 my $r = defined $_revision ? $_revision : $ra->get_latest_revnum;
511 my ($dirent, undef, undef) = $ra->get_dir($repo_path, $r);
512 my $url = $ra->{url};
513 foreach my $d (sort keys %$dirent) {
514 next if ($dirent->{$d}->kind != $SVN::Node::dir);
515 my $path = "$repo_path/$d";
516 my $ref = "$pfx$d";
517 my $gs = eval { Git::SVN->new($ref) };
518 # don't try to init already existing refs
519 unless ($gs) {
520 print "init $url/$path => $ref\n";
521 Git::SVN->init($url, $path, undef, $ref);
522 }
523 }
524}
525sub verify_ref {
527 my ($ref) = @_;
528 eval { command_oneline([ 'rev-parse', '--verify', $ref ],
529 { STDERR => 0 }); };
530}
531sub get_tree_from_treeish {
533 my ($treeish) = @_;
534 # $treeish can be a symbolic ref, too:
535 my $type = command_oneline(qw/cat-file -t/, $treeish);
536 my $expected;
537 while ($type eq 'tag') {
538 ($treeish, $type) = command(qw/cat-file tag/, $treeish);
539 }
540 if ($type eq 'commit') {
541 $expected = (grep /^tree /, command(qw/cat-file commit/,
542 $treeish))[0];
543 ($expected) = ($expected =~ /^tree ($sha1)$/o);
544 die "Unable to get tree from $treeish\n" unless $expected;
545 } elsif ($type eq 'tree') {
546 $expected = $treeish;
547 } else {
548 die "$treeish is a $type, expected tree, tag or commit\n";
549 }
550 return $expected;
551}
552sub get_commit_entry {
554 my ($treeish) = shift;
555 my %log_entry = ( log => '', tree => get_tree_from_treeish($treeish) );
556 my $commit_editmsg = "$ENV{GIT_DIR}/COMMIT_EDITMSG";
557 my $commit_msg = "$ENV{GIT_DIR}/COMMIT_MSG";
558 open my $log_fh, '>', $commit_editmsg or croak $!;
559 my $type = command_oneline(qw/cat-file -t/, $treeish);
561 if ($type eq 'commit' || $type eq 'tag') {
562 my ($msg_fh, $ctx) = command_output_pipe('cat-file',
563 $type, $treeish);
564 my $in_msg = 0;
565 while (<$msg_fh>) {
566 if (!$in_msg) {
567 $in_msg = 1 if (/^\s*$/);
568 } elsif (/^git-svn-id: /) {
569 # skip this for now, we regenerate the
570 # correct one on re-fetch anyways
571 # TODO: set *:merge properties or like...
572 } else {
573 print $log_fh $_ or croak $!;
574 }
575 }
576 command_close_pipe($msg_fh, $ctx);
577 }
578 close $log_fh or croak $!;
579 if ($_edit || ($type eq 'tree')) {
581 my $editor = $ENV{VISUAL} || $ENV{EDITOR} || 'vi';
582 # TODO: strip out spaces, comments, like git-commit.sh
583 system($editor, $commit_editmsg);
584 }
585 rename $commit_editmsg, $commit_msg or croak $!;
586 open $log_fh, '<', $commit_msg or croak $!;
587 { local $/; chomp($log_entry{log} = <$log_fh>); }
588 close $log_fh or croak $!;
589 unlink $commit_msg;
590 \%log_entry;
591}
592sub s_to_file {
594 my ($str, $file, $mode) = @_;
595 open my $fd,'>',$file or croak $!;
596 print $fd $str,"\n" or croak $!;
597 close $fd or croak $!;
598 chmod ($mode &~ umask, $file) if (defined $mode);
599}
600sub file_to_s {
602 my $file = shift;
603 open my $fd,'<',$file or croak "$!: file: $file\n";
604 local $/;
605 my $ret = <$fd>;
606 close $fd or croak $!;
607 $ret =~ s/\s*$//s;
608 return $ret;
609}
610# '<svn username> = real-name <email address>' mapping based on git-svnimport:
612sub load_authors {
613 open my $authors, '<', $_authors or die "Can't open $_authors $!\n";
614 my $log = $cmd eq 'log';
615 while (<$authors>) {
616 chomp;
617 next unless /^(\S+?|\(no author\))\s*=\s*(.+?)\s*<(.+)>\s*$/;
618 my ($user, $name, $email) = ($1, $2, $3);
619 if ($log) {
620 $Git::SVN::Log::rusers{"$name <$email>"} = $user;
621 } else {
622 $users{$user} = [$name, $email];
623 }
624 }
625 close $authors or croak $!;
626}
627# convert GetOpt::Long specs for use by git-config
629sub read_repo_config {
630 return unless -d $ENV{GIT_DIR};
631 my $opts = shift;
632 foreach my $o (keys %$opts) {
633 my $v = $opts->{$o};
634 my ($key) = ($o =~ /^([a-z\-]+)/);
635 $key =~ s/-//g;
636 my $arg = 'git-config';
637 $arg .= ' --int' if ($o =~ /[:=]i$/);
638 $arg .= ' --bool' if ($o !~ /[:=][sfi]$/);
639 if (ref $v eq 'ARRAY') {
640 chomp(my @tmp = `$arg --get-all svn.$key`);
641 @$v = @tmp if @tmp;
642 } else {
643 chomp(my $tmp = `$arg --get svn.$key`);
644 if ($tmp && !($arg =~ / --bool/ && $tmp eq 'false')) {
645 $$v = $tmp;
646 }
647 }
648 }
649}
650sub extract_metadata {
652 my $id = shift or return (undef, undef, undef);
653 my ($url, $rev, $uuid) = ($id =~ /^git-svn-id:\s(\S+?)\@(\d+)
654 \s([a-f\d\-]+)$/x);
655 if (!defined $rev || !$uuid || !$url) {
656 # some of the original repositories I made had
657 # identifiers like this:
658 ($rev, $uuid) = ($id =~/^git-svn-id:\s(\d+)\@([a-f\d\-]+)/);
659 }
660 return ($url, $rev, $uuid);
661}
662sub cmt_metadata {
664 return extract_metadata((grep(/^git-svn-id: /,
665 command(qw/cat-file commit/, shift)))[-1]);
666}
667sub get_commit_time {
669 my $cmt = shift;
670 my $fh = command_output_pipe(qw/rev-list --pretty=raw -n1/, $cmt);
671 while (<$fh>) {
672 /^committer\s(?:.+) (\d+) ([\-\+]?\d+)$/ or next;
673 my ($s, $tz) = ($1, $2);
674 if ($tz =~ s/^\+//) {
675 $s += tz_to_s_offset($tz);
676 } elsif ($tz =~ s/^\-//) {
677 $s -= tz_to_s_offset($tz);
678 }
679 close $fh;
680 return $s;
681 }
682 die "Can't get commit time for commit: $cmt\n";
683}
684sub tz_to_s_offset {
686 my ($tz) = @_;
687 $tz =~ s/(\d\d)$//;
688 return ($1 * 60) + ($tz * 3600);
689}
690package Git::SVN;
692use strict;
693use warnings;
694use vars qw/$default_repo_id $default_ref_id/;
695use Carp qw/croak/;
696use File::Path qw/mkpath/;
697use IPC::Open3;
698# properties that we do not log:
700my %SKIP_PROP;
701BEGIN {
702 %SKIP_PROP = map { $_ => 1 } qw/svn:wc:ra_dav:version-url
703 svn:special svn:executable
704 svn:entry:committed-rev
705 svn:entry:last-author
706 svn:entry:uuid
707 svn:entry:committed-date/;
708}
709sub read_all_remotes {
711 my $r = {};
712 foreach (grep { s/^svn-remote\.// } command(qw/config -l/)) {
713 if (m!^(.+)\.fetch=\s*(.*)\s*:\s*refs/remotes/(.+)\s*$!) {
714 $r->{$1}->{fetch}->{$2} = $3;
715 } elsif (m!^(.+)\.url=\s*(.*)\s*$!) {
716 $r->{$1}->{url} = $2;
717 }
718 }
719 $r;
720}
721sub verify_remotes_sanity {
723 my %seen;
724 foreach (command(qw/config -l/)) {
725 if (m!^svn-remote\.(?:.+)\.fetch=.*:refs/remotes/(\S+)\s*$!) {
726 if ($seen{$1}) {
727 die "Remote ref refs/remote/$1 is tracked by",
728 "\n \"$_\"\nand\n \"$seen{$1}\"\n",
729 "Please resolve this ambiguity in ",
730 "your git configuration file before ",
731 "continuing\n";
732 }
733 $seen{$1} = $_;
734 }
735 }
736}
737# we allow more chars than remotes2config.sh...
739sub sanitize_remote_name {
740 my ($name) = @_;
741 $name =~ tr{A-Za-z0-9:,/+-}{.}c;
742 $name;
743}
744sub init {
746 my ($class, $url, $path, $repo_id, $ref_id) = @_;
747 my $self = _new($class, $repo_id, $ref_id, $path);
748 if (defined $url) {
749 $url =~ s!/+$!!; # strip trailing slash
750 # verify that we aren't overwriting anything:
752 my $orig_url = eval {
753 command_oneline('config', '--get',
754 "svn-remote.$repo_id.url")
755 };
756 if ($orig_url && ($orig_url ne $url)) {
757 die "svn-remote.$repo_id.url already set: ",
758 "$orig_url\nwanted to set to: $url\n";
759 }
760 my ($xrepo_id, $xpath) = find_ref($self->refname);
761 if (defined $xpath) {
762 die "svn-remote.$xrepo_id.fetch already set to track ",
763 "$xpath:refs/remotes/", $self->refname, "\n";
764 }
765 if (!$orig_url) {
766 command_noisy('config',
767 "svn-remote.$repo_id.url", $url);
768 }
769 command_noisy('config', '--add',
770 "svn-remote.$repo_id.fetch",
771 "$path:".$self->refname);
772 }
773 $self->{url} = $url;
774 $self;
775}
776sub find_ref {
778 my ($ref_id) = @_;
779 foreach (command(qw/config -l/)) {
780 next unless m!^svn-remote\.(.+)\.fetch=
781 \s*(.*)\s*:\s*refs/remotes/(.+)\s*$!x;
782 my ($repo_id, $path, $ref) = ($1, $2, $3);
783 if ($ref eq $ref_id) {
784 $path = '' if ($path =~ m#^\./?#);
785 return ($repo_id, $path);
786 }
787 }
788 (undef, undef, undef);
789}
790sub new {
792 my ($class, $ref_id, $repo_id, $path) = @_;
793 if (defined $ref_id && !defined $repo_id && !defined $path) {
794 ($repo_id, $path) = find_ref($ref_id);
795 if (!defined $repo_id) {
796 die "Could not find a \"svn-remote.*.fetch\" key ",
797 "in the repository configuration matching: ",
798 "refs/remotes/$ref_id\n";
799 }
800 }
801 my $self = _new($class, $repo_id, $ref_id, $path);
802 if (!defined $self->{path} || !length $self->{path}) {
803 my $fetch = command_oneline('config', '--get',
804 "svn-remote.$repo_id.fetch",
805 ":refs/remotes/$ref_id\$") or
806 die "Failed to read \"svn-remote.$repo_id.fetch\" ",
807 "\":refs/remotes/$ref_id\$\" in config\n";
808 ($self->{path}, undef) = split(/\s*:\s*/, $fetch);
809 }
810 $self->{url} = command_oneline('config', '--get',
811 "svn-remote.$repo_id.url") or
812 die "Failed to read \"svn-remote.$repo_id.url\" in config\n";
813 $self;
814}
815sub refname { "refs/remotes/$_[0]->{ref_id}" }
817sub ra {
819 my ($self) = shift;
820 $self->{ra} ||= Git::SVN::Ra->new($self->{url});
821}
822sub rel_path {
824 my ($self) = @_;
825 my $repos_root = $self->ra->{repos_root};
826 return $self->{path} if ($self->{url} eq $repos_root);
827 my $url = $self->{url} .
828 (length $self->{path} ? "/$self->{path}" : $self->{path});
829 $url =~ s!^\Q$repos_root\E/*!!g;
830 $url;
831}
832sub copy_remote_ref {
834 my ($self) = @_;
835 my $origin = $::_cp_remote ? $::_cp_remote : 'origin';
836 my $ref = $self->refname;
837 if (command('ls-remote', $origin, $ref)) {
838 command_noisy('fetch', $origin, "$ref:$ref");
839 } elsif ($::_cp_remote && !$::_upgrade) {
840 die "Unable to find remote reference: $ref on $origin\n";
841 }
842}
843sub traverse_ignore {
845 my ($self, $fh, $path, $r) = @_;
846 $path =~ s#^/+##g;
847 my ($dirent, undef, $props) = $self->ra->get_dir($path, $r);
848 my $p = $path;
849 $p =~ s#^\Q$self->{ra}->{svn_path}\E/##;
850 print $fh length $p ? "\n# $p\n" : "\n# /\n";
851 if (my $s = $props->{'svn:ignore'}) {
852 $s =~ s/[\r\n]+/\n/g;
853 chomp $s;
854 if (length $p == 0) {
855 $s =~ s#\n#\n/$p#g;
856 print $fh "/$s\n";
857 } else {
858 $s =~ s#\n#\n/$p/#g;
859 print $fh "/$p/$s\n";
860 }
861 }
862 foreach (sort keys %$dirent) {
863 next if $dirent->{$_}->kind != $SVN::Node::dir;
864 $self->traverse_ignore($fh, "$path/$_", $r);
865 }
866}
867# returns the newest SVN revision number and newest commit SHA1
869sub last_rev_commit {
870 my ($self) = @_;
871 if (defined $self->{last_rev} && defined $self->{last_commit}) {
872 return ($self->{last_rev}, $self->{last_commit});
873 }
874 my $c = ::verify_ref($self->refname.'^0');
875 if ($c) {
876 my $rev = (::cmt_metadata($c))[1];
877 if (defined $rev) {
878 ($self->{last_rev}, $self->{last_commit}) = ($rev, $c);
879 return ($rev, $c);
880 }
881 }
882 my $offset = -41; # from tail
883 my $rl;
884 open my $fh, '<', $self->{db_path} or
885 croak "$self->{db_path} not readable: $!\n";
886 seek $fh, $offset, 2;
887 $rl = readline $fh;
888 defined $rl or return (undef, undef);
889 chomp $rl;
890 while ($c ne $rl && tell $fh != 0) {
891 $offset -= 41;
892 seek $fh, $offset, 2;
893 $rl = readline $fh;
894 defined $rl or return (undef, undef);
895 chomp $rl;
896 }
897 my $rev = tell $fh;
898 croak $! if ($rev < 0);
899 $rev = ($rev - 41) / 41;
900 close $fh or croak $!;
901 ($self->{last_rev}, $self->{last_commit}) = ($rev, $c);
902 return ($rev, $c);
903}
904sub parse_revision {
906 my ($self, $base) = @_;
907 my $head = $self->ra->get_latest_revnum;
908 if (!defined $::_revision || $::_revision eq 'BASE:HEAD') {
909 return ($base + 1, $head) if (defined $base);
910 return (0, $head);
911 }
912 return ($1, $2) if ($::_revision =~ /^(\d+):(\d+)$/);
913 return ($::_revision, $::_revision) if ($::_revision =~ /^\d+$/);
914 if ($::_revision =~ /^BASE:(\d+)$/) {
915 return ($base + 1, $1) if (defined $base);
916 return (0, $head);
917 }
918 return ($1, $head) if ($::_revision =~ /^(\d+):HEAD$/);
919 die "revision argument: $::_revision not understood by git-svn\n",
920 "Try using the command-line svn client instead\n";
921}
922sub tmp_index_do {
924 my ($self, $sub) = @_;
925 my $old_index = $ENV{GIT_INDEX_FILE};
926 $ENV{GIT_INDEX_FILE} = $self->{index};
927 my @ret = &$sub;
928 if ($old_index) {
929 $ENV{GIT_INDEX_FILE} = $old_index;
930 } else {
931 delete $ENV{GIT_INDEX_FILE};
932 }
933 wantarray ? @ret : $ret[0];
934}
935sub assert_index_clean {
937 my ($self, $treeish) = @_;
938 $self->tmp_index_do(sub {
940 command_noisy('read-tree', $treeish) unless -e $self->{index};
941 my $x = command_oneline('write-tree');
942 my ($y) = (command(qw/cat-file commit/, $treeish) =~
943 /^tree ($::sha1)/mo);
944 if ($y ne $x) {
945 unlink $self->{index} or croak $!;
946 command_noisy('read-tree', $treeish);
947 }
948 $x = command_oneline('write-tree');
949 if ($y ne $x) {
950 ::fatal "trees ($treeish) $y != $x\n",
951 "Something is seriously wrong...\n";
952 }
953 });
954}
955sub get_commit_parents {
957 my ($self, $log_entry, @parents) = @_;
958 my (%seen, @ret, @tmp);
959 # commit parents can be conditionally bound to a particular
960 # svn revision via: "svn_revno=commit_sha1", filter them out here:
961 foreach my $p (@parents) {
962 next unless defined $p;
963 if ($p =~ /^(\d+)=($::sha1_short)$/o) {
964 push @tmp, $2 if $1 == $log_entry->{revision};
965 } else {
966 push @tmp, $p if $p =~ /^$::sha1_short$/o;
967 }
968 }
969 if (my $cur = ::verify_ref($self->refname.'^0')) {
970 push @tmp, $cur;
971 }
972 push @tmp, $_ foreach (@{$log_entry->{parents}}, @tmp);
973 while (my $p = shift @tmp) {
974 next if $seen{$p};
975 $seen{$p} = 1;
976 push @ret, $p;
977 # MAXPARENT is defined to 16 in commit-tree.c:
978 last if @ret >= 16;
979 }
980 if (@tmp) {
981 die "r$log_entry->{revision}: No room for parents:\n\t",
982 join("\n\t", @tmp), "\n";
983 }
984 @ret;
985}
986sub full_url {
988 my ($self) = @_;
989 $self->ra->{url} . (length $self->{path} ? '/' . $self->{path} : '');
990}
991sub do_git_commit {
993 my ($self, $log_entry, @parents) = @_;
994 if (my $c = $self->rev_db_get($log_entry->{revision})) {
995 croak "$log_entry->{revision} = $c already exists! ",
996 "Why are we refetching it?\n";
997 }
998 my $author = $log_entry->{author};
999 my ($name, $email) = (defined $::users{$author} ? @{$::users{$author}}
1000 : ($author, "$author\@".$self->ra->uuid));
1001 $ENV{GIT_AUTHOR_NAME} = $ENV{GIT_COMMITTER_NAME} = $name;
1002 $ENV{GIT_AUTHOR_EMAIL} = $ENV{GIT_COMMITTER_EMAIL} = $email;
1003 $ENV{GIT_AUTHOR_DATE} = $ENV{GIT_COMMITTER_DATE} = $log_entry->{date};
1004 my $tree = $log_entry->{tree};
1006 if (!defined $tree) {
1007 $tree = $self->tmp_index_do(sub {
1008 command_oneline('write-tree') });
1009 }
1010 die "Tree is not a valid sha1: $tree\n" if $tree !~ /^$::sha1$/o;
1011 my @exec = ('git-commit-tree', $tree);
1013 foreach ($self->get_commit_parents($log_entry, @parents)) {
1014 push @exec, '-p', $_;
1015 }
1016 defined(my $pid = open3(my $msg_fh, my $out_fh, '>&STDERR', @exec))
1017 or croak $!;
1018 print $msg_fh $log_entry->{log} or croak $!;
1019 print $msg_fh "\ngit-svn-id: ", $self->full_url, '@',
1020 $log_entry->{revision}, ' ',
1021 $self->ra->uuid, "\n" or croak $!;
1022 $msg_fh->flush == 0 or croak $!;
1023 close $msg_fh or croak $!;
1024 chomp(my $commit = do { local $/; <$out_fh> });
1025 close $out_fh or croak $!;
1026 waitpid $pid, 0;
1027 croak $? if $?;
1028 if ($commit !~ /^$::sha1$/o) {
1029 die "Failed to commit, invalid sha1: $commit\n";
1030 }
1031 command_noisy('update-ref',$self->refname, $commit);
1033 $self->rev_db_set($log_entry->{revision}, $commit);
1034 $self->{last_rev} = $log_entry->{revision};
1036 $self->{last_commit} = $commit;
1037 print "r$log_entry->{revision} = $commit\n";
1038 return $commit;
1039}
1040sub revisions_eq {
1042 my ($self, $r0, $r1) = @_;
1043 return 1 if $r0 == $r1;
1044 my $nr = 0;
1045 $self->ra->get_log([$self->{path}], $r0, $r1,
1046 0, 0, 1, sub { $nr++ });
1047 return 0 if ($nr > 1);
1048 return 1;
1049}
1050sub find_parent_branch {
1052 my ($self, $paths, $rev) = @_;
1053 # look for a parent from another branch:
1055 my $i = $paths->{'/'.$self->rel_path} or return;
1056 my $branch_from = $i->copyfrom_path or return;
1057 my $r = $i->copyfrom_rev;
1058 my $repos_root = $self->ra->{repos_root};
1059 my $url = $self->ra->{url};
1060 my $new_url = $repos_root . $branch_from;
1061 print STDERR "Found possible branch point: ",
1062 "$new_url => ", $self->full_url, ", $r\n";
1063 $branch_from =~ s#^/##;
1064 my $remotes = read_all_remotes();
1065 my $gs;
1066 foreach my $repo_id (keys %$remotes) {
1067 my $u = $remotes->{$repo_id}->{url} or next;
1068 next if $url ne $u;
1069 my $fetch = $remotes->{$repo_id}->{fetch};
1070 foreach my $f (keys %$fetch) {
1071 next if $f ne $branch_from;
1072 $gs = Git::SVN->new($fetch->{$f}, $repo_id, $f);
1073 last;
1074 }
1075 last if $gs;
1076 }
1077 unless ($gs) {
1078 my $ref_id = $branch_from;
1079 $ref_id .= "\@$r" if find_ref($ref_id);
1080 # just grow a tail if we're not unique enough :x
1081 $ref_id .= '-' while find_ref($ref_id);
1082 $gs = Git::SVN->init($new_url, '', $ref_id, $ref_id);
1083 }
1084 my ($r0, $parent) = $gs->find_rev_before($r, 1);
1085 if ($::_follow_parent && (!defined $r0 || !defined $parent)) {
1086 foreach (0 .. $r) {
1087 my $log_entry = eval { $gs->do_fetch(undef, $_) };
1088 $gs->do_git_commit($log_entry) if $log_entry;
1089 }
1090 ($r0, $parent) = $gs->last_rev_commit;
1091 }
1092 if (defined $r0 && defined $parent && $gs->revisions_eq($r0, $r)) {
1093 print STDERR "Found branch parent: ($self->{ref_id}) $parent\n";
1094 command_noisy('read-tree', $parent);
1095 my $ed;
1096 if ($self->ra->can_do_switch) {
1097 print STDERR "Following parent with do_switch\n";
1098 # do_switch works with svn/trunk >= r22312, but that
1099 # is not included with SVN 1.4.2 (the latest version
1100 # at the moment), so we can't rely on it
1101 $self->{last_commit} = $parent;
1102 $ed = SVN::Git::Fetcher->new($self);
1103 $gs->ra->gs_do_switch($r0, $rev, $gs->{path}, 1,
1104 $self->full_url, $ed)
1105 or die "SVN connection failed somewhere...\n";
1106 } else {
1107 print STDERR "Following parent with do_update\n";
1108 $ed = SVN::Git::Fetcher->new($self);
1109 $self->ra->gs_do_update($rev, $rev, $self->{path},
1110 1, $ed)
1111 or die "SVN connection failed somewhere...\n";
1112 }
1113 return $self->make_log_entry($rev, [$parent], $ed);
1114 }
1115 print STDERR "Branch parent not found...\n";
1116 return undef;
1117}
1118sub do_fetch {
1120 my ($self, $paths, $rev) = @_;
1121 my $ed;
1122 my ($last_rev, @parents);
1123 if ($self->{last_commit}) {
1124 $ed = SVN::Git::Fetcher->new($self);
1125 $last_rev = $self->{last_rev};
1126 $ed->{c} = $self->{last_commit};
1127 @parents = ($self->{last_commit});
1128 } else {
1129 $last_rev = $rev;
1130 if (my $log_entry = $self->find_parent_branch($paths, $rev)) {
1131 return $log_entry;
1132 }
1133 $ed = SVN::Git::Fetcher->new($self);
1134 }
1135 unless ($self->ra->gs_do_update($last_rev, $rev,
1136 $self->{path}, 1, $ed)) {
1137 die "SVN connection failed somewhere...\n";
1138 }
1139 $self->make_log_entry($rev, \@parents, $ed);
1140}
1141sub write_untracked {
1143 my ($self, $rev, $fh, $untracked) = @_;
1144 my $h;
1145 print $fh "r$rev\n" or croak $!;
1146 $h = $untracked->{empty};
1147 foreach (sort keys %$h) {
1148 my $act = $h->{$_} ? '+empty_dir' : '-empty_dir';
1149 print $fh " $act: ", uri_encode($_), "\n" or croak $!;
1150 warn "W: $act: $_\n";
1151 }
1152 foreach my $t (qw/dir_prop file_prop/) {
1153 $h = $untracked->{$t} or next;
1154 foreach my $path (sort keys %$h) {
1155 my $ppath = $path eq '' ? '.' : $path;
1156 foreach my $prop (sort keys %{$h->{$path}}) {
1157 next if $SKIP_PROP{$prop};
1158 my $v = $h->{$path}->{$prop};
1159 if (defined $v) {
1160 print $fh " +$t: ",
1161 uri_encode($ppath), ' ',
1162 uri_encode($prop), ' ',
1163 uri_encode($v), "\n"
1164 or croak $!;
1165 } else {
1166 print $fh " -$t: ",
1167 uri_encode($ppath), ' ',
1168 uri_encode($prop), "\n"
1169 or croak $!;
1170 }
1171 }
1172 }
1173 }
1174 foreach my $t (qw/absent_file absent_directory/) {
1175 $h = $untracked->{$t} or next;
1176 foreach my $parent (sort keys %$h) {
1177 foreach my $path (sort @{$h->{$parent}}) {
1178 print $fh " $t: ",
1179 uri_encode("$parent/$path"), "\n"
1180 or croak $!;
1181 warn "W: $t: $parent/$path ",
1182 "Insufficient permissions?\n";
1183 }
1184 }
1185 }
1186}
1187sub parse_svn_date {
1189 my $date = shift || return '+0000 1970-01-01 00:00:00';
1190 my ($Y,$m,$d,$H,$M,$S) = ($date =~ /^(\d{4})\-(\d\d)\-(\d\d)T
1191 (\d\d)\:(\d\d)\:(\d\d).\d+Z$/x) or
1192 croak "Unable to parse date: $date\n";
1193 "+0000 $Y-$m-$d $H:$M:$S";
1194}
1195sub check_author {
1197 my ($author) = @_;
1198 if (!defined $author || length $author == 0) {
1199 $author = '(no author)';
1200 }
1201 if (defined $::_authors && ! defined $::users{$author}) {
1202 die "Author: $author not defined in $::_authors file\n";
1203 }
1204 $author;
1205}
1206sub make_log_entry {
1208 my ($self, $rev, $parents, $untracked) = @_;
1209 my $rp = $self->ra->rev_proplist($rev);
1210 my %log_entry = ( parents => $parents || [], revision => $rev,
1211 revprops => $rp, log => '');
1212 open my $un, '>>', "$self->{dir}/unhandled.log" or croak $!;
1213 $self->write_untracked($rev, $un, $untracked);
1214 foreach (sort keys %$rp) {
1215 my $v = $rp->{$_};
1216 if (/^svn:(author|date|log)$/) {
1217 $log_entry{$1} = $v;
1218 } else {
1219 print $un " rev_prop: ", uri_encode($_), ' ',
1220 uri_encode($v), "\n";
1221 }
1222 }
1223 close $un or croak $!;
1224 $log_entry{date} = parse_svn_date($log_entry{date});
1225 $log_entry{author} = check_author($log_entry{author});
1226 $log_entry{log} .= "\n";
1227 \%log_entry;
1228}
1229sub fetch {
1231 my ($self, @parents) = @_;
1232 my ($last_rev, $last_commit) = $self->last_rev_commit;
1233 my ($base, $head) = $self->parse_revision($last_rev);
1234 return if ($base > $head);
1235 if (defined $last_commit) {
1236 $self->assert_index_clean($last_commit);
1237 }
1238 my $inc = 1000;
1239 my ($min, $max) = ($base, $head < $base + $inc ? $head : $base + $inc);
1240 my $err_handler = $SVN::Error::handler;
1241 $SVN::Error::handler = \&skip_unknown_revs;
1242 while (1) {
1243 my @revs;
1244 $self->ra->get_log([$self->{path}], $min, $max, 0, 1, 1, sub {
1245 my ($paths, $rev, $author, $date, $log) = @_;
1246 push @revs, [ $paths, $rev ] });
1247 foreach (@revs) {
1248 my $log_entry = $self->do_fetch(@$_);
1249 $self->do_git_commit($log_entry, @parents);
1250 }
1251 last if $max >= $head;
1252 $min = $max + 1;
1253 $max += $inc;
1254 $max = $head if ($max > $head);
1255 }
1256 $SVN::Error::handler = $err_handler;
1257}
1258sub set_tree_cb {
1260 my ($self, $log_entry, $tree, $rev, $date, $author) = @_;
1261 # TODO: enable and test optimized commits:
1262 if (0 && $rev == ($self->{last_rev} + 1)) {
1263 $log_entry->{revision} = $rev;
1264 $log_entry->{author} = $author;
1265 $self->do_git_commit($log_entry, "$rev=$tree");
1266 } else {
1267 $self->fetch("$rev=$tree");
1268 }
1269}
1270sub set_tree {
1272 my ($self, $tree) = (shift, shift);
1273 my $log_entry = ::get_commit_entry($tree);
1274 unless ($self->{last_rev}) {
1275 fatal("Must have an existing revision to commit\n");
1276 }
1277 my $pool = SVN::Pool->new;
1278 my $ed = SVN::Git::Editor->new({ r => $self->{last_rev},
1279 ra => $self->ra->dup,
1280 svn_path => $self->ra->{svn_path}
1281 },
1282 $self->ra->get_commit_editor(
1283 $log_entry->{log}, sub {
1284 $self->set_tree_cb($log_entry,
1285 $tree, @_);
1286 }),
1287 $pool);
1288 my $mods = $ed->apply_diff($self->{last_commit}, $tree);
1289 if (@$mods == 0) {
1290 print "No changes\nr$self->{last_rev} = $tree\n";
1291 }
1292 $pool->clear;
1293}
1294sub skip_unknown_revs {
1296 my ($err) = @_;
1297 my $errno = $err->apr_err();
1298 # Maybe the branch we're tracking didn't
1299 # exist when the repo started, so it's
1300 # not an error if it doesn't, just continue
1301 #
1302 # Wonderfully consistent library, eh?
1303 # 160013 - svn:// and file://
1304 # 175002 - http(s)://
1305 # 175007 - http(s):// (this repo required authorization, too...)
1306 # More codes may be discovered later...
1307 if ($errno == 175007 || $errno == 175002 || $errno == 160013) {
1308 return;
1309 }
1310 croak "Error from SVN, ($errno): ", $err->expanded_message,"\n";
1311}
1312# rev_db:
1314# Tie::File seems to be prone to offset errors if revisions get sparse,
1315# it's not that fast, either. Tie::File is also not in Perl 5.6. So
1316# one of my favorite modules is out :< Next up would be one of the DBM
1317# modules, but I'm not sure which is most portable... So I'll just
1318# go with something that's plain-text, but still capable of
1319# being randomly accessed. So here's my ultra-simple fixed-width
1320# database. All records are 40 characters + "\n", so it's easy to seek
1321# to a revision: (41 * rev) is the byte offset.
1322# A record of 40 0s denotes an empty revision.
1323# And yes, it's still pretty fast (faster than Tie::File).
1324sub rev_db_set {
1326 my ($self, $rev, $commit) = @_;
1327 length $commit == 40 or croak "arg3 must be a full SHA1 hexsum\n";
1328 open my $fh, '+<', $self->{db_path} or croak $!;
1329 my $offset = $rev * 41;
1330 # assume that append is the common case:
1331 seek $fh, 0, 2 or croak $!;
1332 my $pos = tell $fh;
1333 if ($pos < $offset) {
1334 print $fh (('0' x 40),"\n") x (($offset - $pos) / 41)
1335 or croak $!;
1336 }
1337 seek $fh, $offset, 0 or croak $!;
1338 print $fh $commit,"\n" or croak $!;
1339 close $fh or croak $!;
1340}
1341sub rev_db_get {
1343 my ($self, $rev) = @_;
1344 my $ret;
1345 my $offset = $rev * 41;
1346 open my $fh, '<', $self->{db_path} or croak $!;
1347 if (seek $fh, $offset, 0) {
1348 $ret = readline $fh;
1349 if (defined $ret) {
1350 chomp $ret;
1351 $ret = undef if ($ret =~ /^0{40}$/);
1352 }
1353 }
1354 close $fh or croak $!;
1355 $ret;
1356}
1357sub find_rev_before {
1359 my ($self, $rev, $eq_ok) = @_;
1360 --$rev unless $eq_ok;
1361 while ($rev > 0) {
1362 if (my $c = $self->rev_db_get($rev)) {
1363 return ($rev, $c);
1364 }
1365 --$rev;
1366 }
1367 return (undef, undef);
1368}
1369sub _new {
1371 my ($class, $repo_id, $ref_id, $path) = @_;
1372 unless (defined $repo_id && length $repo_id) {
1373 $repo_id = $Git::SVN::default_repo_id;
1374 }
1375 unless (defined $ref_id && length $ref_id) {
1376 $_[2] = $ref_id = $Git::SVN::default_ref_id;
1377 }
1378 $_[1] = $repo_id = sanitize_remote_name($repo_id);
1379 my $dir = "$ENV{GIT_DIR}/svn/$ref_id";
1380 $_[3] = $path = '' unless (defined $path);
1381 mkpath([$dir]);
1382 unless (-f "$dir/.rev_db") {
1383 open my $fh, '>>', "$dir/.rev_db" or croak $!;
1384 close $fh or croak $!;
1385 }
1386 bless { ref_id => $ref_id, dir => $dir, index => "$dir/index",
1387 path => $path,
1388 db_path => "$dir/.rev_db", repo_id => $repo_id }, $class;
1389}
1390sub uri_encode {
1392 my ($f) = @_;
1393 $f =~ s#([^a-zA-Z0-9\*!\:_\./\-])#uc sprintf("%%%02x",ord($1))#eg;
1394 $f
1395}
1396package Git::SVN::Prompt;
1398use strict;
1399use warnings;
1400require SVN::Core;
1401use vars qw/$_no_auth_cache $_username/;
1402sub simple {
1404 my ($cred, $realm, $default_username, $may_save, $pool) = @_;
1405 $may_save = undef if $_no_auth_cache;
1406 $default_username = $_username if defined $_username;
1407 if (defined $default_username && length $default_username) {
1408 if (defined $realm && length $realm) {
1409 print STDERR "Authentication realm: $realm\n";
1410 STDERR->flush;
1411 }
1412 $cred->username($default_username);
1413 } else {
1414 username($cred, $realm, $may_save, $pool);
1415 }
1416 $cred->password(_read_password("Password for '" .
1417 $cred->username . "': ", $realm));
1418 $cred->may_save($may_save);
1419 $SVN::_Core::SVN_NO_ERROR;
1420}
1421sub ssl_server_trust {
1423 my ($cred, $realm, $failures, $cert_info, $may_save, $pool) = @_;
1424 $may_save = undef if $_no_auth_cache;
1425 print STDERR "Error validating server certificate for '$realm':\n";
1426 if ($failures & $SVN::Auth::SSL::UNKNOWNCA) {
1427 print STDERR " - The certificate is not issued by a trusted ",
1428 "authority. Use the\n",
1429 " fingerprint to validate the certificate manually!\n";
1430 }
1431 if ($failures & $SVN::Auth::SSL::CNMISMATCH) {
1432 print STDERR " - The certificate hostname does not match.\n";
1433 }
1434 if ($failures & $SVN::Auth::SSL::NOTYETVALID) {
1435 print STDERR " - The certificate is not yet valid.\n";
1436 }
1437 if ($failures & $SVN::Auth::SSL::EXPIRED) {
1438 print STDERR " - The certificate has expired.\n";
1439 }
1440 if ($failures & $SVN::Auth::SSL::OTHER) {
1441 print STDERR " - The certificate has an unknown error.\n";
1442 }
1443 printf STDERR
1444 "Certificate information:\n".
1445 " - Hostname: %s\n".
1446 " - Valid: from %s until %s\n".
1447 " - Issuer: %s\n".
1448 " - Fingerprint: %s\n",
1449 map $cert_info->$_, qw(hostname valid_from valid_until
1450 issuer_dname fingerprint);
1451 my $choice;
1452prompt:
1453 print STDERR $may_save ?
1454 "(R)eject, accept (t)emporarily or accept (p)ermanently? " :
1455 "(R)eject or accept (t)emporarily? ";
1456 STDERR->flush;
1457 $choice = lc(substr(<STDIN> || 'R', 0, 1));
1458 if ($choice =~ /^t$/i) {
1459 $cred->may_save(undef);
1460 } elsif ($choice =~ /^r$/i) {
1461 return -1;
1462 } elsif ($may_save && $choice =~ /^p$/i) {
1463 $cred->may_save($may_save);
1464 } else {
1465 goto prompt;
1466 }
1467 $cred->accepted_failures($failures);
1468 $SVN::_Core::SVN_NO_ERROR;
1469}
1470sub ssl_client_cert {
1472 my ($cred, $realm, $may_save, $pool) = @_;
1473 $may_save = undef if $_no_auth_cache;
1474 print STDERR "Client certificate filename: ";
1475 STDERR->flush;
1476 chomp(my $filename = <STDIN>);
1477 $cred->cert_file($filename);
1478 $cred->may_save($may_save);
1479 $SVN::_Core::SVN_NO_ERROR;
1480}
1481sub ssl_client_cert_pw {
1483 my ($cred, $realm, $may_save, $pool) = @_;
1484 $may_save = undef if $_no_auth_cache;
1485 $cred->password(_read_password("Password: ", $realm));
1486 $cred->may_save($may_save);
1487 $SVN::_Core::SVN_NO_ERROR;
1488}
1489sub username {
1491 my ($cred, $realm, $may_save, $pool) = @_;
1492 $may_save = undef if $_no_auth_cache;
1493 if (defined $realm && length $realm) {
1494 print STDERR "Authentication realm: $realm\n";
1495 }
1496 my $username;
1497 if (defined $_username) {
1498 $username = $_username;
1499 } else {
1500 print STDERR "Username: ";
1501 STDERR->flush;
1502 chomp($username = <STDIN>);
1503 }
1504 $cred->username($username);
1505 $cred->may_save($may_save);
1506 $SVN::_Core::SVN_NO_ERROR;
1507}
1508sub _read_password {
1510 my ($prompt, $realm) = @_;
1511 print STDERR $prompt;
1512 STDERR->flush;
1513 require Term::ReadKey;
1514 Term::ReadKey::ReadMode('noecho');
1515 my $password = '';
1516 while (defined(my $key = Term::ReadKey::ReadKey(0))) {
1517 last if $key =~ /[\012\015]/; # \n\r
1518 $password .= $key;
1519 }
1520 Term::ReadKey::ReadMode('restore');
1521 print STDERR "\n";
1522 STDERR->flush;
1523 $password;
1524}
1525package main;
1527sub uri_encode {
1529 my ($f) = @_;
1530 $f =~ s#([^a-zA-Z0-9\*!\:_\./\-])#uc sprintf("%%%02x",ord($1))#eg;
1531 $f
1532}
1533sub uri_decode {
1535 my ($f) = @_;
1536 $f =~ tr/+/ /;
1537 $f =~ s/%([A-F0-9]{2})/chr hex($1)/ge;
1538 $f
1539}
1540{
1542 my $kill_stupid_warnings = $SVN::Node::none.$SVN::Node::file.
1543 $SVN::Node::dir.$SVN::Node::unknown.
1544 $SVN::Node::none.$SVN::Node::file.
1545 $SVN::Node::dir.$SVN::Node::unknown.
1546 $SVN::Auth::SSL::CNMISMATCH.
1547 $SVN::Auth::SSL::NOTYETVALID.
1548 $SVN::Auth::SSL::EXPIRED.
1549 $SVN::Auth::SSL::UNKNOWNCA.
1550 $SVN::Auth::SSL::OTHER;
1551}
1552package SVN::Git::Fetcher;
1554use vars qw/@ISA/;
1555use strict;
1556use warnings;
1557use Carp qw/croak/;
1558use IO::File qw//;
1559# file baton members: path, mode_a, mode_b, pool, fh, blob, base
1561sub new {
1562 my ($class, $git_svn) = @_;
1563 my $self = SVN::Delta::Editor->new;
1564 bless $self, $class;
1565 $self->{c} = $git_svn->{last_commit} if exists $git_svn->{last_commit};
1566 $self->{empty} = {};
1567 $self->{dir_prop} = {};
1568 $self->{file_prop} = {};
1569 $self->{absent_dir} = {};
1570 $self->{absent_file} = {};
1571 ($self->{gui}, $self->{ctx}) = $git_svn->tmp_index_do(
1572 sub { command_input_pipe(qw/update-index -z --index-info/) } );
1573 require Digest::MD5;
1574 $self;
1575}
1576sub set_path_strip {
1578 my ($self, $path) = @_;
1579 $self->{path_strip} = qr/^\Q$path\E\/?/;
1580}
1581sub open_root {
1583 { path => '' };
1584}
1585sub open_directory {
1587 my ($self, $path, $pb, $rev) = @_;
1588 { path => $path };
1589}
1590sub git_path {
1592 my ($self, $path) = @_;
1593 $path =~ s!$self->{path_strip}!! if $self->{path_strip};
1594 $path;
1595}
1596sub delete_entry {
1598 my ($self, $path, $rev, $pb) = @_;
1599 my $gui = $self->{gui};
1600 my $gpath = $self->git_path($path);
1602 # remove entire directories.
1603 if (command('ls-tree', $self->{c}, '--', $gpath) =~ /^040000 tree/) {
1604 my ($ls, $ctx) = command_output_pipe(qw/ls-tree
1605 -r --name-only -z/,
1606 $self->{c}, '--', $gpath);
1607 local $/ = "\0";
1608 while (<$ls>) {
1609 print $gui '0 ',0 x 40,"\t",$_ or croak $!;
1610 print "\tD\t$_\n" unless $self->{q};
1611 }
1612 print "\tD\t$gpath/\n" unless $self->{q};
1613 command_close_pipe($ls, $ctx);
1614 $self->{empty}->{$path} = 0
1615 } else {
1616 print $gui '0 ',0 x 40,"\t",$gpath,"\0" or croak $!;
1617 print "\tD\t$gpath\n" unless $self->{q};
1618 }
1619 undef;
1620}
1621sub open_file {
1623 my ($self, $path, $pb, $rev) = @_;
1624 my $gpath = $self->git_path($path);
1625 my ($mode, $blob) = (command('ls-tree', $self->{c}, '--', $gpath)
1626 =~ /^(\d{6}) blob ([a-f\d]{40})\t/);
1627 unless (defined $mode && defined $blob) {
1628 die "$path was not found in commit $self->{c} (r$rev)\n";
1629 }
1630 { path => $path, mode_a => $mode, mode_b => $mode, blob => $blob,
1631 pool => SVN::Pool->new, action => 'M' };
1632}
1633sub add_file {
1635 my ($self, $path, $pb, $cp_path, $cp_rev) = @_;
1636 my ($dir, $file) = ($path =~ m#^(.*?)/?([^/]+)$#);
1637 delete $self->{empty}->{$dir};
1638 { path => $path, mode_a => 100644, mode_b => 100644,
1639 pool => SVN::Pool->new, action => 'A' };
1640}
1641sub add_directory {
1643 my ($self, $path, $cp_path, $cp_rev) = @_;
1644 my ($dir, $file) = ($path =~ m#^(.*?)/?([^/]+)$#);
1645 delete $self->{empty}->{$dir};
1646 $self->{empty}->{$path} = 1;
1647 { path => $path };
1648}
1649sub change_dir_prop {
1651 my ($self, $db, $prop, $value) = @_;
1652 $self->{dir_prop}->{$db->{path}} ||= {};
1653 $self->{dir_prop}->{$db->{path}}->{$prop} = $value;
1654 undef;
1655}
1656sub absent_directory {
1658 my ($self, $path, $pb) = @_;
1659 $self->{absent_dir}->{$pb->{path}} ||= [];
1660 push @{$self->{absent_dir}->{$pb->{path}}}, $path;
1661 undef;
1662}
1663sub absent_file {
1665 my ($self, $path, $pb) = @_;
1666 $self->{absent_file}->{$pb->{path}} ||= [];
1667 push @{$self->{absent_file}->{$pb->{path}}}, $path;
1668 undef;
1669}
1670sub change_file_prop {
1672 my ($self, $fb, $prop, $value) = @_;
1673 if ($prop eq 'svn:executable') {
1674 if ($fb->{mode_b} != 120000) {
1675 $fb->{mode_b} = defined $value ? 100755 : 100644;
1676 }
1677 } elsif ($prop eq 'svn:special') {
1678 $fb->{mode_b} = defined $value ? 120000 : 100644;
1679 } else {
1680 $self->{file_prop}->{$fb->{path}} ||= {};
1681 $self->{file_prop}->{$fb->{path}}->{$prop} = $value;
1682 }
1683 undef;
1684}
1685sub apply_textdelta {
1687 my ($self, $fb, $exp) = @_;
1688 my $fh = IO::File->new_tmpfile;
1689 $fh->autoflush(1);
1690 # $fh gets auto-closed() by SVN::TxDelta::apply(),
1691 # (but $base does not,) so dup() it for reading in close_file
1692 open my $dup, '<&', $fh or croak $!;
1693 my $base = IO::File->new_tmpfile;
1694 $base->autoflush(1);
1695 if ($fb->{blob}) {
1696 defined (my $pid = fork) or croak $!;
1697 if (!$pid) {
1698 open STDOUT, '>&', $base or croak $!;
1699 print STDOUT 'link ' if ($fb->{mode_a} == 120000);
1700 exec qw/git-cat-file blob/, $fb->{blob} or croak $!;
1701 }
1702 waitpid $pid, 0;
1703 croak $? if $?;
1704 if (defined $exp) {
1706 seek $base, 0, 0 or croak $!;
1707 my $md5 = Digest::MD5->new;
1708 $md5->addfile($base);
1709 my $got = $md5->hexdigest;
1710 die "Checksum mismatch: $fb->{path} $fb->{blob}\n",
1711 "expected: $exp\n",
1712 " got: $got\n" if ($got ne $exp);
1713 }
1714 }
1715 seek $base, 0, 0 or croak $!;
1716 $fb->{fh} = $dup;
1717 $fb->{base} = $base;
1718 [ SVN::TxDelta::apply($base, $fh, undef, $fb->{path}, $fb->{pool}) ];
1719}
1720sub close_file {
1722 my ($self, $fb, $exp) = @_;
1723 my $hash;
1724 my $path = $self->git_path($fb->{path});
1725 if (my $fh = $fb->{fh}) {
1726 seek($fh, 0, 0) or croak $!;
1727 my $md5 = Digest::MD5->new;
1728 $md5->addfile($fh);
1729 my $got = $md5->hexdigest;
1730 die "Checksum mismatch: $path\n",
1731 "expected: $exp\n got: $got\n" if ($got ne $exp);
1732 seek($fh, 0, 0) or croak $!;
1733 if ($fb->{mode_b} == 120000) {
1734 read($fh, my $buf, 5) == 5 or croak $!;
1735 $buf eq 'link ' or die "$path has mode 120000",
1736 "but is not a link\n";
1737 }
1738 defined(my $pid = open my $out,'-|') or die "Can't fork: $!\n";
1739 if (!$pid) {
1740 open STDIN, '<&', $fh or croak $!;
1741 exec qw/git-hash-object -w --stdin/ or croak $!;
1742 }
1743 chomp($hash = do { local $/; <$out> });
1744 close $out or croak $!;
1745 close $fh or croak $!;
1746 $hash =~ /^[a-f\d]{40}$/ or die "not a sha1: $hash\n";
1747 close $fb->{base} or croak $!;
1748 } else {
1749 $hash = $fb->{blob} or die "no blob information\n";
1750 }
1751 $fb->{pool}->clear;
1752 my $gui = $self->{gui};
1753 print $gui "$fb->{mode_b} $hash\t$path\0" or croak $!;
1754 print "\t$fb->{action}\t$path\n" if $fb->{action} && ! $self->{q};
1755 undef;
1756}
1757sub abort_edit {
1759 my $self = shift;
1760 eval { command_close_pipe($self->{gui}, $self->{ctx}) };
1761 $self->SUPER::abort_edit(@_);
1762}
1763sub close_edit {
1765 my $self = shift;
1766 command_close_pipe($self->{gui}, $self->{ctx});
1767 $self->{git_commit_ok} = 1;
1768 $self->SUPER::close_edit(@_);
1769}
1770package SVN::Git::Editor;
1772use vars qw/@ISA/;
1773use strict;
1774use warnings;
1775use Carp qw/croak/;
1776use IO::File;
1777sub new {
1779 my $class = shift;
1780 my $git_svn = shift;
1781 my $self = SVN::Delta::Editor->new(@_);
1782 bless $self, $class;
1783 foreach (qw/svn_path r ra/) {
1784 die "$_ required!\n" unless (defined $git_svn->{$_});
1785 $self->{$_} = $git_svn->{$_};
1786 }
1787 $self->{pool} = SVN::Pool->new;
1788 $self->{bat} = { '' => $self->open_root($self->{r}, $self->{pool}) };
1789 $self->{rm} = { };
1790 require Digest::MD5;
1791 return $self;
1792}
1793sub split_path {
1795 return ($_[0] =~ m#^(.*?)/?([^/]+)$#);
1796}
1797sub repo_path {
1799 (defined $_[1] && length $_[1]) ? $_[1] : ''
1800}
1801sub url_path {
1803 my ($self, $path) = @_;
1804 $self->{ra}->{url} . '/' . $self->repo_path($path);
1805}
1806sub rmdirs {
1808 my ($self, $tree_b) = @_;
1809 my $rm = $self->{rm};
1810 delete $rm->{''}; # we never delete the url we're tracking
1811 return unless %$rm;
1812 foreach (keys %$rm) {
1814 my @d = split m#/#, $_;
1815 my $c = shift @d;
1816 $rm->{$c} = 1;
1817 while (@d) {
1818 $c .= '/' . shift @d;
1819 $rm->{$c} = 1;
1820 }
1821 }
1822 delete $rm->{$self->{svn_path}};
1823 delete $rm->{''}; # we never delete the url we're tracking
1824 return unless %$rm;
1825 my ($fh, $ctx) = command_output_pipe(
1827 qw/ls-tree --name-only -r -z/, $tree_b);
1828 local $/ = "\0";
1829 while (<$fh>) {
1830 chomp;
1831 my @dn = split m#/#, $_;
1832 while (pop @dn) {
1833 delete $rm->{join '/', @dn};
1834 }
1835 unless (%$rm) {
1836 close $fh;
1837 return;
1838 }
1839 }
1840 command_close_pipe($fh, $ctx);
1841 my ($r, $p, $bat) = ($self->{r}, $self->{pool}, $self->{bat});
1843 foreach my $d (sort { $b =~ tr#/#/# <=> $a =~ tr#/#/# } keys %$rm) {
1844 $self->close_directory($bat->{$d}, $p);
1845 my ($dn) = ($d =~ m#^(.*?)/?(?:[^/]+)$#);
1846 print "\tD+\t$d/\n" unless $::_q;
1847 $self->SUPER::delete_entry($d, $r, $bat->{$dn}, $p);
1848 delete $bat->{$d};
1849 }
1850}
1851sub open_or_add_dir {
1853 my ($self, $full_path, $baton) = @_;
1854 my $t = $self->{ra}->check_path($full_path, $self->{r});
1855 if ($t == $SVN::Node::none) {
1856 return $self->add_directory($full_path, $baton,
1857 undef, -1, $self->{pool});
1858 } elsif ($t == $SVN::Node::dir) {
1859 return $self->open_directory($full_path, $baton,
1860 $self->{r}, $self->{pool});
1861 }
1862 print STDERR "$full_path already exists in repository at ",
1863 "r$self->{r} and it is not a directory (",
1864 ($t == $SVN::Node::file ? 'file' : 'unknown'),"/$t)\n";
1865 exit 1;
1866}
1867sub ensure_path {
1869 my ($self, $path) = @_;
1870 my $bat = $self->{bat};
1871 $path = $self->repo_path($path);
1872 return $bat->{''} unless (length $path);
1873 my @p = split m#/+#, $path;
1874 my $c = shift @p;
1875 $bat->{$c} ||= $self->open_or_add_dir($c, $bat->{''});
1876 while (@p) {
1877 my $c0 = $c;
1878 $c .= '/' . shift @p;
1879 $bat->{$c} ||= $self->open_or_add_dir($c, $bat->{$c0});
1880 }
1881 return $bat->{$c};
1882}
1883sub A {
1885 my ($self, $m) = @_;
1886 my ($dir, $file) = split_path($m->{file_b});
1887 my $pbat = $self->ensure_path($dir);
1888 my $fbat = $self->add_file($self->repo_path($m->{file_b}), $pbat,
1889 undef, -1);
1890 print "\tA\t$m->{file_b}\n" unless $::_q;
1891 $self->chg_file($fbat, $m);
1892 $self->close_file($fbat,undef,$self->{pool});
1893}
1894sub C {
1896 my ($self, $m) = @_;
1897 my ($dir, $file) = split_path($m->{file_b});
1898 my $pbat = $self->ensure_path($dir);
1899 my $fbat = $self->add_file($self->repo_path($m->{file_b}), $pbat,
1900 $self->url_path($m->{file_a}), $self->{r});
1901 print "\tC\t$m->{file_a} => $m->{file_b}\n" unless $::_q;
1902 $self->chg_file($fbat, $m);
1903 $self->close_file($fbat,undef,$self->{pool});
1904}
1905sub delete_entry {
1907 my ($self, $path, $pbat) = @_;
1908 my $rpath = $self->repo_path($path);
1909 my ($dir, $file) = split_path($rpath);
1910 $self->{rm}->{$dir} = 1;
1911 $self->SUPER::delete_entry($rpath, $self->{r}, $pbat, $self->{pool});
1912}
1913sub R {
1915 my ($self, $m) = @_;
1916 my ($dir, $file) = split_path($m->{file_b});
1917 my $pbat = $self->ensure_path($dir);
1918 my $fbat = $self->add_file($self->repo_path($m->{file_b}), $pbat,
1919 $self->url_path($m->{file_a}), $self->{r});
1920 print "\tR\t$m->{file_a} => $m->{file_b}\n" unless $::_q;
1921 $self->chg_file($fbat, $m);
1922 $self->close_file($fbat,undef,$self->{pool});
1923 ($dir, $file) = split_path($m->{file_a});
1925 $pbat = $self->ensure_path($dir);
1926 $self->delete_entry($m->{file_a}, $pbat);
1927}
1928sub M {
1930 my ($self, $m) = @_;
1931 my ($dir, $file) = split_path($m->{file_b});
1932 my $pbat = $self->ensure_path($dir);
1933 my $fbat = $self->open_file($self->repo_path($m->{file_b}),
1934 $pbat,$self->{r},$self->{pool});
1935 print "\t$m->{chg}\t$m->{file_b}\n" unless $::_q;
1936 $self->chg_file($fbat, $m);
1937 $self->close_file($fbat,undef,$self->{pool});
1938}
1939sub T { shift->M(@_) }
1941sub change_file_prop {
1943 my ($self, $fbat, $pname, $pval) = @_;
1944 $self->SUPER::change_file_prop($fbat, $pname, $pval, $self->{pool});
1945}
1946sub chg_file {
1948 my ($self, $fbat, $m) = @_;
1949 if ($m->{mode_b} =~ /755$/ && $m->{mode_a} !~ /755$/) {
1950 $self->change_file_prop($fbat,'svn:executable','*');
1951 } elsif ($m->{mode_b} !~ /755$/ && $m->{mode_a} =~ /755$/) {
1952 $self->change_file_prop($fbat,'svn:executable',undef);
1953 }
1954 my $fh = IO::File->new_tmpfile or croak $!;
1955 if ($m->{mode_b} =~ /^120/) {
1956 print $fh 'link ' or croak $!;
1957 $self->change_file_prop($fbat,'svn:special','*');
1958 } elsif ($m->{mode_a} =~ /^120/ && $m->{mode_b} !~ /^120/) {
1959 $self->change_file_prop($fbat,'svn:special',undef);
1960 }
1961 defined(my $pid = fork) or croak $!;
1962 if (!$pid) {
1963 open STDOUT, '>&', $fh or croak $!;
1964 exec qw/git-cat-file blob/, $m->{sha1_b} or croak $!;
1965 }
1966 waitpid $pid, 0;
1967 croak $? if $?;
1968 $fh->flush == 0 or croak $!;
1969 seek $fh, 0, 0 or croak $!;
1970 my $md5 = Digest::MD5->new;
1972 $md5->addfile($fh) or croak $!;
1973 seek $fh, 0, 0 or croak $!;
1974 my $exp = $md5->hexdigest;
1976 my $pool = SVN::Pool->new;
1977 my $atd = $self->apply_textdelta($fbat, undef, $pool);
1978 my $got = SVN::TxDelta::send_stream($fh, @$atd, $pool);
1979 die "Checksum mismatch\nexpected: $exp\ngot: $got\n" if ($got ne $exp);
1980 $pool->clear;
1981 close $fh or croak $!;
1983}
1984sub D {
1986 my ($self, $m) = @_;
1987 my ($dir, $file) = split_path($m->{file_b});
1988 my $pbat = $self->ensure_path($dir);
1989 print "\tD\t$m->{file_b}\n" unless $::_q;
1990 $self->delete_entry($m->{file_b}, $pbat);
1991}
1992sub close_edit {
1994 my ($self) = @_;
1995 my ($p,$bat) = ($self->{pool}, $self->{bat});
1996 foreach (sort { $b =~ tr#/#/# <=> $a =~ tr#/#/# } keys %$bat) {
1997 $self->close_directory($bat->{$_}, $p);
1998 }
1999 $self->SUPER::close_edit($p);
2000 $p->clear;
2001}
2002sub abort_edit {
2004 my ($self) = @_;
2005 $self->SUPER::abort_edit($self->{pool});
2006 $self->{pool}->clear;
2007}
2008# this drives the editor
2010sub apply_diff {
2011 my ($self, $tree_a, $tree_b) = @_;
2012 my @diff_tree = qw(diff-tree -z -r);
2013 if ($::_cp_similarity) {
2014 push @diff_tree, "-C$::_cp_similarity";
2015 } else {
2016 push @diff_tree, '-C';
2017 }
2018 push @diff_tree, '--find-copies-harder' if $::_find_copies_harder;
2019 push @diff_tree, "-l$::_l" if defined $::_l;
2020 push @diff_tree, $tree_a, $tree_b;
2021 my ($diff_fh, $ctx) = command_output_pipe(@diff_tree);
2022 my $nl = $/;
2023 local $/ = "\0";
2024 my $state = 'meta';
2025 my @mods;
2026 while (<$diff_fh>) {
2027 chomp $_; # this gets rid of the trailing "\0"
2028 if ($state eq 'meta' && /^:(\d{6})\s(\d{6})\s
2029 $::sha1\s($::sha1)\s
2030 ([MTCRAD])\d*$/xo) {
2031 push @mods, { mode_a => $1, mode_b => $2,
2032 sha1_b => $3, chg => $4 };
2033 if ($4 =~ /^(?:C|R)$/) {
2034 $state = 'file_a';
2035 } else {
2036 $state = 'file_b';
2037 }
2038 } elsif ($state eq 'file_a') {
2039 my $x = $mods[$#mods] or croak "Empty array\n";
2040 if ($x->{chg} !~ /^(?:C|R)$/) {
2041 croak "Error parsing $_, $x->{chg}\n";
2042 }
2043 $x->{file_a} = $_;
2044 $state = 'file_b';
2045 } elsif ($state eq 'file_b') {
2046 my $x = $mods[$#mods] or croak "Empty array\n";
2047 if (exists $x->{file_a} && $x->{chg} !~ /^(?:C|R)$/) {
2048 croak "Error parsing $_, $x->{chg}\n";
2049 }
2050 if (!exists $x->{file_a} && $x->{chg} =~ /^(?:C|R)$/) {
2051 croak "Error parsing $_, $x->{chg}\n";
2052 }
2053 $x->{file_b} = $_;
2054 $state = 'meta';
2055 } else {
2056 croak "Error parsing $_\n";
2057 }
2058 }
2059 command_close_pipe($diff_fh, $ctx);
2060 $/ = $nl;
2061 my %o = ( D => 1, R => 0, C => -1, A => 3, M => 3, T => 3 );
2063 foreach my $m (sort { $o{$a->{chg}} <=> $o{$b->{chg}} } @mods) {
2064 my $f = $m->{chg};
2065 if (defined $o{$f}) {
2066 $self->$f($m);
2067 } else {
2068 fatal("Invalid change type: $f\n");
2069 }
2070 }
2071 $self->rmdirs($tree_b) if $::_rmdir;
2072 if (@mods == 0) {
2073 $self->abort_edit;
2074 } else {
2075 $self->close_edit;
2076 }
2077 \@mods;
2078}
2079package Git::SVN::Ra;
2081use vars qw/@ISA $config_dir/;
2082use strict;
2083use warnings;
2084my ($can_do_switch);
2085my %RA;
2086BEGIN {
2088 # enforce temporary pool usage for some simple functions
2089 my $e;
2090 foreach (qw/get_latest_revnum rev_proplist get_file
2091 check_path get_dir get_uuid get_repos_root/) {
2092 $e .= "sub $_ {
2093 my \$self = shift;
2094 my \$pool = SVN::Pool->new;
2095 my \@ret = \$self->SUPER::$_(\@_,\$pool);
2096 \$pool->clear;
2097 wantarray ? \@ret : \$ret[0]; }\n";
2098 }
2099 eval $e;
2100}
2101sub new {
2103 my ($class, $url) = @_;
2104 $url =~ s!/+$!!;
2105 return $RA{$url} if $RA{$url};
2106 SVN::_Core::svn_config_ensure($config_dir, undef);
2108 my ($baton, $callbacks) = SVN::Core::auth_open_helper([
2109 SVN::Client::get_simple_provider(),
2110 SVN::Client::get_ssl_server_trust_file_provider(),
2111 SVN::Client::get_simple_prompt_provider(
2112 \&Git::SVN::Prompt::simple, 2),
2113 SVN::Client::get_ssl_client_cert_prompt_provider(
2114 \&Git::SVN::Prompt::ssl_client_cert, 2),
2115 SVN::Client::get_ssl_client_cert_pw_prompt_provider(
2116 \&Git::SVN::Prompt::ssl_client_cert_pw, 2),
2117 SVN::Client::get_username_provider(),
2118 SVN::Client::get_ssl_server_trust_prompt_provider(
2119 \&Git::SVN::Prompt::ssl_server_trust),
2120 SVN::Client::get_username_prompt_provider(
2121 \&Git::SVN::Prompt::username, 2),
2122 ]);
2123 my $config = SVN::Core::config_get_config($config_dir);
2124 my $self = SVN::Ra->new(url => $url, auth => $baton,
2125 config => $config,
2126 pool => SVN::Pool->new,
2127 auth_provider_callbacks => $callbacks);
2128 $self->{svn_path} = $url;
2129 $self->{repos_root} = $self->get_repos_root;
2130 $self->{svn_path} =~ s#^\Q$self->{repos_root}\E/*##;
2131 $RA{$url} = bless $self, $class;
2132}
2133sub DESTROY {
2135 # do not call the real DESTROY since we store ourselves in %RA
2136}
2137sub dup {
2139 my ($self) = @_;
2140 my $dup = SVN::Ra->new(pool => SVN::Pool->new,
2141 map { $_ => $self->{$_} } qw/config url
2142 auth auth_provider_callbacks repos_root svn_path/);
2143 bless $dup, ref $self;
2144}
2145sub get_log {
2147 my ($self, @args) = @_;
2148 my $pool = SVN::Pool->new;
2149 $args[4]-- if $args[4] && ! $::_follow_parent;
2150 splice(@args, 3, 1) if ($SVN::Core::VERSION le '1.2.0');
2151 my $ret = $self->SUPER::get_log(@args, $pool);
2152 $pool->clear;
2153 $ret;
2154}
2155sub get_commit_editor {
2157 my ($self, $log, $cb, $pool) = @_;
2158 my @lock = $SVN::Core::VERSION ge '1.2.0' ? (undef, 0) : ();
2159 $self->SUPER::get_commit_editor($log, $cb, @lock, $pool);
2160}
2161sub uuid {
2163 my ($self) = @_;
2164 $self->{uuid} ||= $self->get_uuid;
2165}
2166sub gs_do_update {
2168 my ($self, $rev_a, $rev_b, $path, $recurse, $editor) = @_;
2169 my $pool = SVN::Pool->new;
2170 $editor->set_path_strip($path);
2171 my $reporter = $self->do_update($rev_b, $path, $recurse,
2172 $editor, $pool);
2173 my @lock = $SVN::Core::VERSION ge '1.2.0' ? (undef) : ();
2174 my $new = ($rev_a == $rev_b);
2175 $reporter->set_path('', $rev_a, $new, @lock, $pool);
2176 $reporter->finish_report($pool);
2177 $pool->clear;
2178 $editor->{git_commit_ok};
2179}
2180sub gs_do_switch {
2182 my ($self, $rev_a, $rev_b, $path, $recurse, $url_b, $editor) = @_;
2183 my $pool = SVN::Pool->new;
2184 $editor->set_path_strip($path);
2185 my $reporter = $self->do_switch($rev_b, $path, $recurse,
2186 $url_b, $editor, $pool);
2187 my @lock = $SVN::Core::VERSION ge '1.2.0' ? (undef) : ();
2188 $reporter->set_path('', $rev_a, 0, @lock, $pool);
2189 $reporter->finish_report($pool);
2190 $pool->clear;
2191 $editor->{git_commit_ok};
2192}
2193sub can_do_switch {
2195 my $self = shift;
2196 unless (defined $can_do_switch) {
2197 my $pool = SVN::Pool->new;
2198 my $rep = eval {
2199 $self->do_switch(1, '', 0, $self->{url},
2200 SVN::Delta::Editor->new, $pool);
2201 };
2202 if ($@) {
2203 $can_do_switch = 0;
2204 } else {
2205 $rep->abort_report($pool);
2206 $can_do_switch = 1;
2207 }
2208 $pool->clear;
2209 }
2210 $can_do_switch;
2211}
2212package Git::SVN::Log;
2214use strict;
2215use warnings;
2216use POSIX qw/strftime/;
2217use vars qw/$TZ $limit $color $pager $non_recursive $verbose $oneline
2218 %rusers $show_commit $incremental/;
2219my $l_fmt;
2220sub cmt_showable {
2222 my ($c) = @_;
2223 return 1 if defined $c->{r};
2224 if ($c->{l} && $c->{l}->[-1] eq "...\n" &&
2225 $c->{a_raw} =~ /\@([a-f\d\-]+)>$/) {
2226 my @log = command(qw/cat-file commit/, $c->{c});
2227 shift @log while ($log[0] ne "\n");
2228 shift @log;
2229 @{$c->{l}} = grep !/^git-svn-id: /, @log;
2230 (undef, $c->{r}, undef) = ::extract_metadata(
2232 (grep(/^git-svn-id: /, @log))[-1]);
2233 }
2234 return defined $c->{r};
2235}
2236sub log_use_color {
2238 return 1 if $color;
2239 my ($dc, $dcvar);
2240 $dcvar = 'color.diff';
2241 $dc = `git-config --get $dcvar`;
2242 if ($dc eq '') {
2243 # nothing at all; fallback to "diff.color"
2244 $dcvar = 'diff.color';
2245 $dc = `git-config --get $dcvar`;
2246 }
2247 chomp($dc);
2248 if ($dc eq 'auto') {
2249 my $pc;
2250 $pc = `git-config --get color.pager`;
2251 if ($pc eq '') {
2252 # does not have it -- fallback to pager.color
2253 $pc = `git-config --bool --get pager.color`;
2254 }
2255 else {
2256 $pc = `git-config --bool --get color.pager`;
2257 if ($?) {
2258 $pc = 'false';
2259 }
2260 }
2261 chomp($pc);
2262 if (-t *STDOUT || (defined $pager && $pc eq 'true')) {
2263 return ($ENV{TERM} && $ENV{TERM} ne 'dumb');
2264 }
2265 return 0;
2266 }
2267 return 0 if $dc eq 'never';
2268 return 1 if $dc eq 'always';
2269 chomp($dc = `git-config --bool --get $dcvar`);
2270 return ($dc eq 'true');
2271}
2272sub git_svn_log_cmd {
2274 my ($r_min, $r_max) = @_;
2275 my $gs = Git::SVN->_new;
2276 my @cmd = (qw/log --abbrev-commit --pretty=raw --default/,
2277 $gs->refname);
2278 push @cmd, '-r' unless $non_recursive;
2279 push @cmd, qw/--raw --name-status/ if $verbose;
2280 push @cmd, '--color' if log_use_color();
2281 return @cmd unless defined $r_max;
2282 if ($r_max == $r_min) {
2283 push @cmd, '--max-count=1';
2284 if (my $c = $gs->rev_db_get($r_max)) {
2285 push @cmd, $c;
2286 }
2287 } else {
2288 my ($c_min, $c_max);
2289 $c_max = $gs->rev_db_get($r_max);
2290 $c_min = $gs->rev_db_get($r_min);
2291 if (defined $c_min && defined $c_max) {
2292 if ($r_max > $r_max) {
2293 push @cmd, "$c_min..$c_max";
2294 } else {
2295 push @cmd, "$c_max..$c_min";
2296 }
2297 } elsif ($r_max > $r_min) {
2298 push @cmd, $c_max;
2299 } else {
2300 push @cmd, $c_min;
2301 }
2302 }
2303 return @cmd;
2304}
2305# adapted from pager.c
2307sub config_pager {
2308 $pager ||= $ENV{GIT_PAGER} || $ENV{PAGER};
2309 if (!defined $pager) {
2310 $pager = 'less';
2311 } elsif (length $pager == 0 || $pager eq 'cat') {
2312 $pager = undef;
2313 }
2314}
2315sub run_pager {
2317 return unless -t *STDOUT;
2318 pipe my $rfd, my $wfd or return;
2319 defined(my $pid = fork) or ::fatal "Can't fork: $!\n";
2320 if (!$pid) {
2321 open STDOUT, '>&', $wfd or
2322 ::fatal "Can't redirect to stdout: $!\n";
2323 return;
2324 }
2325 open STDIN, '<&', $rfd or ::fatal "Can't redirect stdin: $!\n";
2326 $ENV{LESS} ||= 'FRSX';
2327 exec $pager or ::fatal "Can't run pager: $! ($pager)\n";
2328}
2329sub get_author_info {
2331 my ($dest, $author, $t, $tz) = @_;
2332 $author =~ s/(?:^\s*|\s*$)//g;
2333 $dest->{a_raw} = $author;
2334 my $au;
2335 if ($::_authors) {
2336 $au = $rusers{$author} || undef;
2337 }
2338 if (!$au) {
2339 ($au) = ($author =~ /<([^>]+)\@[^>]+>$/);
2340 }
2341 $dest->{t} = $t;
2342 $dest->{tz} = $tz;
2343 $dest->{a} = $au;
2344 # Date::Parse isn't in the standard Perl distro :(
2345 if ($tz =~ s/^\+//) {
2346 $t += ::tz_to_s_offset($tz);
2347 } elsif ($tz =~ s/^\-//) {
2348 $t -= ::tz_to_s_offset($tz);
2349 }
2350 $dest->{t_utc} = $t;
2351}
2352sub process_commit {
2354 my ($c, $r_min, $r_max, $defer) = @_;
2355 if (defined $r_min && defined $r_max) {
2356 if ($r_min == $c->{r} && $r_min == $r_max) {
2357 show_commit($c);
2358 return 0;
2359 }
2360 return 1 if $r_min == $r_max;
2361 if ($r_min < $r_max) {
2362 # we need to reverse the print order
2363 return 0 if (defined $limit && --$limit < 0);
2364 push @$defer, $c;
2365 return 1;
2366 }
2367 if ($r_min != $r_max) {
2368 return 1 if ($r_min < $c->{r});
2369 return 1 if ($r_max > $c->{r});
2370 }
2371 }
2372 return 0 if (defined $limit && --$limit < 0);
2373 show_commit($c);
2374 return 1;
2375}
2376sub show_commit {
2378 my $c = shift;
2379 if ($oneline) {
2380 my $x = "\n";
2381 if (my $l = $c->{l}) {
2382 while ($l->[0] =~ /^\s*$/) { shift @$l }
2383 $x = $l->[0];
2384 }
2385 $l_fmt ||= 'A' . length($c->{r});
2386 print 'r',pack($l_fmt, $c->{r}),' | ';
2387 print "$c->{c} | " if $show_commit;
2388 print $x;
2389 } else {
2390 show_commit_normal($c);
2391 }
2392}
2393sub show_commit_changed_paths {
2395 my ($c) = @_;
2396 return unless $c->{changed};
2397 print "Changed paths:\n", @{$c->{changed}};
2398}
2399sub show_commit_normal {
2401 my ($c) = @_;
2402 print '-' x72, "\nr$c->{r} | ";
2403 print "$c->{c} | " if $show_commit;
2404 print "$c->{a} | ", strftime("%Y-%m-%d %H:%M:%S %z (%a, %d %b %Y)",
2405 localtime($c->{t_utc})), ' | ';
2406 my $nr_line = 0;
2407 if (my $l = $c->{l}) {
2409 while ($l->[$#$l] eq "\n" && $#$l > 0
2410 && $l->[($#$l - 1)] eq "\n") {
2411 pop @$l;
2412 }
2413 $nr_line = scalar @$l;
2414 if (!$nr_line) {
2415 print "1 line\n\n\n";
2416 } else {
2417 if ($nr_line == 1) {
2418 $nr_line = '1 line';
2419 } else {
2420 $nr_line .= ' lines';
2421 }
2422 print $nr_line, "\n";
2423 show_commit_changed_paths($c);
2424 print "\n";
2425 print $_ foreach @$l;
2426 }
2427 } else {
2428 print "1 line\n";
2429 show_commit_changed_paths($c);
2430 print "\n";
2431 }
2433 foreach my $x (qw/raw diff/) {
2434 if ($c->{$x}) {
2435 print "\n";
2436 print $_ foreach @{$c->{$x}}
2437 }
2438 }
2439}
2440sub cmd_show_log {
2442 my (@args) = @_;
2443 my ($r_min, $r_max);
2444 my $r_last = -1; # prevent dupes
2445 if (defined $TZ) {
2446 $ENV{TZ} = $TZ;
2447 } else {
2448 delete $ENV{TZ};
2449 }
2450 if (defined $::_revision) {
2451 if ($::_revision =~ /^(\d+):(\d+)$/) {
2452 ($r_min, $r_max) = ($1, $2);
2453 } elsif ($::_revision =~ /^\d+$/) {
2454 $r_min = $r_max = $::_revision;
2455 } else {
2456 ::fatal "-r$::_revision is not supported, use ",
2457 "standard \'git log\' arguments instead\n";
2458 }
2459 }
2460 config_pager();
2462 @args = (git_svn_log_cmd($r_min, $r_max), @args);
2463 my $log = command_output_pipe(@args);
2464 run_pager();
2465 my (@k, $c, $d);
2466 my $esc_color = qr/(?:\033\[(?:(?:\d+;)*\d*)?m)*/;
2467 while (<$log>) {
2468 if (/^${esc_color}commit ($::sha1_short)/o) {
2469 my $cmt = $1;
2470 if ($c && cmt_showable($c) && $c->{r} != $r_last) {
2471 $r_last = $c->{r};
2472 process_commit($c, $r_min, $r_max, \@k) or
2473 goto out;
2474 }
2475 $d = undef;
2476 $c = { c => $cmt };
2477 } elsif (/^${esc_color}author (.+) (\d+) ([\-\+]?\d+)$/o) {
2478 get_author_info($c, $1, $2, $3);
2479 } elsif (/^${esc_color}(?:tree|parent|committer) /o) {
2480 # ignore
2481 } elsif (/^${esc_color}:\d{6} \d{6} $::sha1_short/o) {
2482 push @{$c->{raw}}, $_;
2483 } elsif (/^${esc_color}[ACRMDT]\t/) {
2484 # we could add $SVN->{svn_path} here, but that requires
2485 # remote access at the moment (repo_path_split)...
2486 s#^(${esc_color})([ACRMDT])\t#$1 $2 #o;
2487 push @{$c->{changed}}, $_;
2488 } elsif (/^${esc_color}diff /o) {
2489 $d = 1;
2490 push @{$c->{diff}}, $_;
2491 } elsif ($d) {
2492 push @{$c->{diff}}, $_;
2493 } elsif (/^${esc_color} (git-svn-id:.+)$/o) {
2494 ($c->{url}, $c->{r}, undef) = ::extract_metadata($1);
2495 } elsif (s/^${esc_color} //o) {
2496 push @{$c->{l}}, $_;
2497 }
2498 }
2499 if ($c && defined $c->{r} && $c->{r} != $r_last) {
2500 $r_last = $c->{r};
2501 process_commit($c, $r_min, $r_max, \@k);
2502 }
2503 if (@k) {
2504 my $swap = $r_max;
2505 $r_max = $r_min;
2506 $r_min = $swap;
2507 process_commit($_, $r_min, $r_max) foreach reverse @k;
2508 }
2509out:
2510 close $log;
2511 print '-' x72,"\n" unless $incremental || $oneline;
2512}
2513package Git::SVN::Migration;
2515# these version numbers do NOT correspond to actual version numbers
2516# of git nor git-svn. They are just relative.
2517#
2518# v0 layout: .git/$id/info/url, refs/heads/$id-HEAD
2519#
2520# v1 layout: .git/$id/info/url, refs/remotes/$id
2521#
2522# v2 layout: .git/svn/$id/info/url, refs/remotes/$id
2523#
2524# v3 layout: .git/svn/$id, refs/remotes/$id
2525# - info/url may remain for backwards compatibility
2526# - this is what we migrate up to this layout automatically,
2527# - this will be used by git svn init on single branches
2528#
2529# v4 layout: .git/svn/$repo_id/$id, refs/remotes/$repo_id/$id
2530# - this is only created for newly multi-init-ed
2531# repositories. Similar in spirit to the
2532# --use-separate-remotes option in git-clone (now default)
2533# - we do not automatically migrate to this (following
2534# the example set by core git)
2535use strict;
2536use warnings;
2537use Carp qw/croak/;
2538use File::Path qw/mkpath/;
2539use File::Basename qw/dirname basename/;
2540use vars qw/$_minimize/;
2541sub migrate_from_v0 {
2543 my $git_dir = $ENV{GIT_DIR};
2544 return undef unless -d $git_dir;
2545 my ($fh, $ctx) = command_output_pipe(qw/rev-parse --symbolic --all/);
2546 my $migrated = 0;
2547 while (<$fh>) {
2548 chomp;
2549 my ($id, $orig_ref) = ($_, $_);
2550 next unless $id =~ s#^refs/heads/(.+)-HEAD$#$1#;
2551 next unless -f "$git_dir/$id/info/url";
2552 my $new_ref = "refs/remotes/$id";
2553 if (::verify_ref("$new_ref^0")) {
2554 print STDERR "W: $orig_ref is probably an old ",
2555 "branch used by an ancient version of ",
2556 "git-svn.\n",
2557 "However, $new_ref also exists.\n",
2558 "We will not be able ",
2559 "to use this branch until this ",
2560 "ambiguity is resolved.\n";
2561 next;
2562 }
2563 print STDERR "Migrating from v0 layout...\n" if !$migrated;
2564 print STDERR "Renaming ref: $orig_ref => $new_ref\n";
2565 command_noisy('update-ref', $new_ref, $orig_ref);
2566 command_noisy('update-ref', '-d', $orig_ref, $orig_ref);
2567 $migrated++;
2568 }
2569 command_close_pipe($fh, $ctx);
2570 print STDERR "Done migrating from v0 layout...\n" if $migrated;
2571 $migrated;
2572}
2573sub migrate_from_v1 {
2575 my $git_dir = $ENV{GIT_DIR};
2576 my $migrated = 0;
2577 return $migrated unless -d $git_dir;
2578 my $svn_dir = "$git_dir/svn";
2579 # just in case somebody used 'svn' as their $id at some point...
2581 return $migrated if -d $svn_dir && ! -f "$svn_dir/info/url";
2582 print STDERR "Migrating from a git-svn v1 layout...\n";
2584 mkpath([$svn_dir]);
2585 print STDERR "Data from a previous version of git-svn exists, but\n\t",
2586 "$svn_dir\n\t(required for this version ",
2587 "($::VERSION) of git-svn) does not. exist\n";
2588 my ($fh, $ctx) = command_output_pipe(qw/rev-parse --symbolic --all/);
2589 while (<$fh>) {
2590 my $x = $_;
2591 next unless $x =~ s#^refs/remotes/##;
2592 chomp $x;
2593 next unless -f "$git_dir/$x/info/url";
2594 my $u = eval { ::file_to_s("$git_dir/$x/info/url") };
2595 next unless $u;
2596 my $dn = dirname("$git_dir/svn/$x");
2597 mkpath([$dn]) unless -d $dn;
2598 if ($x eq 'svn') { # they used 'svn' as GIT_SVN_ID:
2599 mkpath(["$git_dir/svn/svn"]);
2600 print STDERR " - $git_dir/$x/info => ",
2601 "$git_dir/svn/$x/info\n";
2602 rename "$git_dir/$x/info", "$git_dir/svn/$x/info" or
2603 croak "$!: $x";
2604 # don't worry too much about these, they probably
2605 # don't exist with repos this old (save for index,
2606 # and we can easily regenerate that)
2607 foreach my $f (qw/unhandled.log index .rev_db/) {
2608 rename "$git_dir/$x/$f", "$git_dir/svn/$x/$f";
2609 }
2610 } else {
2611 print STDERR " - $git_dir/$x => $git_dir/svn/$x\n";
2612 rename "$git_dir/$x", "$git_dir/svn/$x" or
2613 croak "$!: $x";
2614 }
2615 $migrated++;
2616 }
2617 command_close_pipe($fh, $ctx);
2618 print STDERR "Done migrating from a git-svn v1 layout\n";
2619 $migrated;
2620}
2621sub read_old_urls {
2623 my ($l_map, $pfx, $path) = @_;
2624 my @dir;
2625 foreach (<$path/*>) {
2626 if (-r "$_/info/url") {
2627 $pfx .= '/' if $pfx && $pfx !~ m!/$!;
2628 my $ref_id = $pfx . basename $_;
2629 my $url = ::file_to_s("$_/info/url");
2630 $l_map->{$ref_id} = $url;
2631 } elsif (-d $_) {
2632 push @dir, $_;
2633 }
2634 }
2635 foreach (@dir) {
2636 my $x = $_;
2637 $x =~ s!^\Q$ENV{GIT_DIR}\E/svn/!!o;
2638 read_old_urls($l_map, $x, $_);
2639 }
2640}
2641sub migrate_from_v2 {
2643 my @cfg = command(qw/config -l/);
2644 return if grep /^svn-remote\..+\.url=/, @cfg;
2645 my %l_map;
2646 read_old_urls(\%l_map, '', "$ENV{GIT_DIR}/svn");
2647 my $migrated = 0;
2648 foreach my $ref_id (sort keys %l_map) {
2650 Git::SVN->init($l_map{$ref_id}, '', $ref_id, $ref_id);
2651 $migrated++;
2652 }
2653 $migrated;
2654}
2655sub minimize_connections {
2657 my $r = Git::SVN::read_all_remotes();
2658 my $new_urls = {};
2659 my $root_repos = {};
2660 foreach my $repo_id (keys %$r) {
2661 my $url = $r->{$repo_id}->{url} or next;
2662 my $fetch = $r->{$repo_id}->{fetch} or next;
2663 my $ra = Git::SVN::Ra->new($url);
2664 # skip existing cases where we already connect to the root
2666 if (($ra->{url} eq $ra->{repos_root}) ||
2667 (Git::SVN::sanitize_remote_name($ra->{repos_root}) eq
2668 $repo_id)) {
2669 $root_repos->{$ra->{url}} = $repo_id;
2670 next;
2671 }
2672 my $root_ra = Git::SVN::Ra->new($ra->{repos_root});
2674 my $root_path = $ra->{url};
2675 $root_path =~ s#^\Q$ra->{repos_root}\E/*##;
2676 foreach my $path (keys %$fetch) {
2677 my $ref_id = $fetch->{$path};
2678 my $gs = Git::SVN->new($ref_id, $repo_id, $path);
2679 # make sure we can read when connecting to
2681 # a higher level of a repository
2682 my ($last_rev, undef) = $gs->last_rev_commit;
2683 if (!defined $last_rev) {
2684 $last_rev = eval {
2685 $root_ra->get_latest_revnum;
2686 };
2687 next if $@;
2688 }
2689 my $new = $root_path;
2690 $new .= length $path ? "/$path" : '';
2691 eval {
2692 $root_ra->get_log([$new], $last_rev, $last_rev,
2693 0, 0, 1, sub { });
2694 };
2695 next if $@;
2696 $new_urls->{$ra->{repos_root}}->{$new} =
2697 { ref_id => $ref_id,
2698 old_repo_id => $repo_id,
2699 old_path => $path };
2700 }
2701 }
2702 my @emptied;
2704 foreach my $url (keys %$new_urls) {
2705 # see if we can re-use an existing [svn-remote "repo_id"]
2706 # instead of creating a(n ugly) new section:
2707 my $repo_id = $root_repos->{$url} ||
2708 Git::SVN::sanitize_remote_name($url);
2709 my $fetch = $new_urls->{$url};
2711 foreach my $path (keys %$fetch) {
2712 my $x = $fetch->{$path};
2713 Git::SVN->init($url, $path, $repo_id, $x->{ref_id});
2714 my $pfx = "svn-remote.$x->{old_repo_id}";
2715 my $old_fetch = quotemeta("$x->{old_path}:".
2717 "refs/remotes/$x->{ref_id}");
2718 command_noisy(qw/config --unset/,
2719 "$pfx.fetch", '^'. $old_fetch . '$');
2720 delete $r->{$x->{old_repo_id}}->
2721 {fetch}->{$x->{old_path}};
2722 if (!keys %{$r->{$x->{old_repo_id}}->{fetch}}) {
2723 command_noisy(qw/config --unset/,
2724 "$pfx.url");
2725 push @emptied, $x->{old_repo_id}
2726 }
2727 }
2728 }
2729 if (@emptied) {
2730 my $file = $ENV{GIT_CONFIG} || $ENV{GIT_CONFIG_LOCAL} ||
2731 "$ENV{GIT_DIR}/config";
2732 print STDERR <<EOF;
2733The following [svn-remote] sections in your config file ($file) are empty
2734and can be safely removed:
2735EOF
2736 print STDERR "[svn-remote \"$_\"]\n" foreach @emptied;
2737 }
2738}
2739sub migration_check {
2741 migrate_from_v0();
2742 migrate_from_v1();
2743 migrate_from_v2();
2744 minimize_connections() if $_minimize;
2745}
2746__END__
2748Data structures:
2750$log_entry hashref as returned by libsvn_log_entry()
2752{
2753 log => 'whitespace-formatted log entry
2754', # trailing newline is preserved
2755 revision => '8', # integer
2756 date => '2004-02-24T17:01:44.108345Z', # commit date
2757 author => 'committer name'
2758};
2759@mods = array of diff-index line hashes, each element represents one line
2761 of diff-index output
2762diff-index line ($m hash)
2764{
2765 mode_a => first column of diff-index output, no leading ':',
2766 mode_b => second column of diff-index output,
2767 sha1_b => sha1sum of the final blob,
2768 chg => change type [MCRADT],
2769 file_a => original file name of a file (iff chg is 'C' or 'R')
2770 file_b => new/current file name of a file (any chg)
2771}
2772;
2773# retval of read_url_paths{,_all}();
2775$l_map = {
2776 # repository root url
2777 'https://svn.musicpd.org' => {
2778 # repository path # GIT_SVN_ID
2779 'mpd/trunk' => 'trunk',
2780 'mpd/tags/0.11.5' => 'tags/0.11.5',
2781 },
2782}
2783Notes:
2785 I don't trust the each() function on unless I created %hash myself
2786 because the internal iterator may not have started at base.