a70e7b911014b0b74e8e263ca888a911d41405d7
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 if (@_) {
281 die "Additional fetch arguments are no longer supported.\n",
282 "Use --follow-parent if you have moved/copied directories
283 instead.\n";
284 }
285 my $gs = Git::SVN->new;
286 $gs->fetch;
287 if ($gs->{last_commit} && !verify_ref('refs/heads/master^0')) {
288 command_noisy(qw(update-ref refs/heads/master),
289 $gs->{last_commit});
290 }
291}
292sub cmd_set_tree {
294 my (@commits) = @_;
295 if ($_stdin || !@commits) {
296 print "Reading from stdin...\n";
297 @commits = ();
298 while (<STDIN>) {
299 if (/\b($sha1_short)\b/o) {
300 unshift @commits, $1;
301 }
302 }
303 }
304 my @revs;
305 foreach my $c (@commits) {
306 my @tmp = command('rev-parse',$c);
307 if (scalar @tmp == 1) {
308 push @revs, $tmp[0];
309 } elsif (scalar @tmp > 1) {
310 push @revs, reverse(command('rev-list',@tmp));
311 } else {
312 fatal "Failed to rev-parse $c\n";
313 }
314 }
315 my $gs = Git::SVN->new;
316 my ($r_last, $cmt_last) = $gs->last_rev_commit;
317 $gs->fetch;
318 if ($r_last != $gs->{last_rev}) {
319 fatal "There are new revisions that were fetched ",
320 "and need to be merged (or acknowledged) ",
321 "before committing.\nlast rev: $r_last\n",
322 " current: $gs->{last_rev}\n";
323 }
324 $gs->set_tree($_) foreach @revs;
325 print "Done committing ",scalar @revs," revisions to SVN\n";
326}
327sub cmd_dcommit {
329 my $head = shift;
330 my $gs = Git::SVN->new;
331 $head ||= 'HEAD';
332 my @refs = command(qw/rev-list --no-merges/, $gs->refname."..$head");
333 my $last_rev;
334 foreach my $d (reverse @refs) {
335 if (!verify_ref("$d~1")) {
336 fatal "Commit $d\n",
337 "has no parent commit, and therefore ",
338 "nothing to diff against.\n",
339 "You should be working from a repository ",
340 "originally created by git-svn\n";
341 }
342 unless (defined $last_rev) {
343 (undef, $last_rev, undef) = cmt_metadata("$d~1");
344 unless (defined $last_rev) {
345 fatal "Unable to extract revision information ",
346 "from commit $d~1\n";
347 }
348 }
349 if ($_dry_run) {
350 print "diff-tree $d~1 $d\n";
351 } else {
352 my $log = get_commit_entry($d)->{log};
353 my $ra = $gs->ra;
354 my $pool = SVN::Pool->new;
355 my %ed_opts = ( r => $last_rev,
356 ra => $ra->dup,
357 svn_path => $ra->{svn_path} );
358 my $ed = SVN::Git::Editor->new(\%ed_opts,
359 $ra->get_commit_editor($log,
360 sub { print "Committed r$_[0]\n";
361 $last_rev = $_[0]; }),
362 $pool);
363 my $mods = $ed->apply_diff("$d~1", $d);
364 if (@$mods == 0) {
365 print "No changes\n$d~1 == $d\n";
366 }
367 }
368 }
369 return if $_dry_run;
370 $gs->fetch;
371 # we always want to rebase against the current HEAD, not any
372 # head that was passed to us
373 my @diff = command('diff-tree', 'HEAD', $gs->refname, '--');
374 my @finish;
375 if (@diff) {
376 @finish = qw/rebase/;
377 push @finish, qw/--merge/ if $_merge;
378 push @finish, "--strategy=$_strategy" if $_strategy;
379 print STDERR "W: HEAD and ", $gs->refname, " differ, ",
380 "using @finish:\n", "@diff";
381 } else {
382 print "No changes between current HEAD and ",
383 $gs->refname, "\nResetting to the latest ",
384 $gs->refname, "\n";
385 @finish = qw/reset --mixed/;
386 }
387 command_noisy(@finish, $gs->refname);
388}
389sub cmd_show_ignore {
391 my $gs = Git::SVN->new;
392 my $r = (defined $_revision ? $_revision : $gs->ra->get_latest_revnum);
393 $gs->traverse_ignore(\*STDOUT, '', $r);
394}
395sub cmd_multi_init {
397 my $url = shift;
398 unless (defined $_trunk || defined $_branches || defined $_tags) {
399 usage(1);
400 }
401 do_git_init_db();
402 $_prefix = '' unless defined $_prefix;
403 $url =~ s#/+$## if defined $url;
404 if (defined $_trunk) {
405 my $trunk_ref = $_prefix . 'trunk';
406 # try both old-style and new-style lookups:
407 my $gs_trunk = eval { Git::SVN->new($trunk_ref) };
408 unless ($gs_trunk) {
409 my ($trunk_url, $trunk_path) =
410 complete_svn_url($url, $_trunk);
411 $gs_trunk = Git::SVN->init($trunk_url, $trunk_path,
412 undef, $trunk_ref);
413 }
414 }
415 return unless defined $_branches || defined $_tags;
416 my $ra = $url ? Git::SVN::Ra->new($url) : undef;
417 complete_url_ls_init($ra, $_branches, '--branches/-b', $_prefix);
418 complete_url_ls_init($ra, $_tags, '--tags/-t', $_prefix . 'tags/');
419}
420sub cmd_multi_fetch {
422 my @gs;
423 foreach (command(qw/config -l/)) {
424 next unless m!^svn-remote\.(.+)\.fetch=
425 \s*(.*)\s*:\s*refs/remotes/(.+)\s*$!x;
426 my ($repo_id, $path, $ref_id) = ($1, $2, $3);
427 push @gs, Git::SVN->new($ref_id, $repo_id, $path);
428 }
429 foreach (@gs) {
430 $_->fetch;
431 }
432}
433# this command is special because it requires no metadata
435sub cmd_commit_diff {
436 my ($ta, $tb, $url) = @_;
437 my $usage = "Usage: $0 commit-diff -r<revision> ".
438 "<tree-ish> <tree-ish> [<URL>]\n";
439 fatal($usage) if (!defined $ta || !defined $tb);
440 if (!defined $url) {
441 my $gs = eval { Git::SVN->new };
442 if (!$gs) {
443 fatal("Needed URL or usable git-svn --id in ",
444 "the command-line\n", $usage);
445 }
446 $url = $gs->{url};
447 }
448 unless (defined $_revision) {
449 fatal("-r|--revision is a required argument\n", $usage);
450 }
451 if (defined $_message && defined $_file) {
452 fatal("Both --message/-m and --file/-F specified ",
453 "for the commit message.\n",
454 "I have no idea what you mean\n");
455 }
456 if (defined $_file) {
457 $_message = file_to_s($_file);
458 } else {
459 $_message ||= get_commit_entry($tb)->{log};
460 }
461 my $ra ||= Git::SVN::Ra->new($url);
462 my $r = $_revision;
463 if ($r eq 'HEAD') {
464 $r = $ra->get_latest_revnum;
465 } elsif ($r !~ /^\d+$/) {
466 die "revision argument: $r not understood by git-svn\n";
467 }
468 my $pool = SVN::Pool->new;
469 my %ed_opts = ( r => $r,
470 ra => $ra->dup,
471 svn_path => $ra->{svn_path} );
472 my $ed = SVN::Git::Editor->new(\%ed_opts,
473 $ra->get_commit_editor($_message,
474 sub { print "Committed r$_[0]\n" }),
475 $pool);
476 my $mods = $ed->apply_diff($ta, $tb);
477 if (@$mods == 0) {
478 print "No changes\n$ta == $tb\n";
479 }
480 $pool->clear;
481}
482########################### utility functions #########################
484sub complete_svn_url {
486 my ($url, $path) = @_;
487 $path =~ s#/+$##;
488 if ($path !~ m#^[a-z\+]+://#) {
489 if (!defined $url || $url !~ m#^[a-z\+]+://#) {
490 fatal("E: '$path' is not a complete URL ",
491 "and a separate URL is not specified\n");
492 }
493 return ($url, $path);
494 }
495 return ($path, '');
496}
497sub complete_url_ls_init {
499 my ($ra, $repo_path, $switch, $pfx) = @_;
500 unless ($repo_path) {
501 print STDERR "W: $switch not specified\n";
502 return;
503 }
504 $repo_path =~ s#/+$##;
505 if ($repo_path =~ m#^[a-z\+]+://#) {
506 $ra = Git::SVN::Ra->new($repo_path);
507 $repo_path = '';
508 } else {
509 $repo_path =~ s#^/+##;
510 unless ($ra) {
511 fatal("E: '$repo_path' is not a complete URL ",
512 "and a separate URL is not specified\n");
513 }
514 }
515 my $r = defined $_revision ? $_revision : $ra->get_latest_revnum;
516 my ($dirent, undef, undef) = $ra->get_dir($repo_path, $r);
517 my $url = $ra->{url};
518 foreach my $d (sort keys %$dirent) {
519 next if ($dirent->{$d}->kind != $SVN::Node::dir);
520 my $path = "$repo_path/$d";
521 my $ref = "$pfx$d";
522 my $gs = eval { Git::SVN->new($ref) };
523 # don't try to init already existing refs
524 unless ($gs) {
525 print "init $url/$path => $ref\n";
526 Git::SVN->init($url, $path, undef, $ref);
527 }
528 }
529}
530sub verify_ref {
532 my ($ref) = @_;
533 eval { command_oneline([ 'rev-parse', '--verify', $ref ],
534 { STDERR => 0 }); };
535}
536sub get_tree_from_treeish {
538 my ($treeish) = @_;
539 # $treeish can be a symbolic ref, too:
540 my $type = command_oneline(qw/cat-file -t/, $treeish);
541 my $expected;
542 while ($type eq 'tag') {
543 ($treeish, $type) = command(qw/cat-file tag/, $treeish);
544 }
545 if ($type eq 'commit') {
546 $expected = (grep /^tree /, command(qw/cat-file commit/,
547 $treeish))[0];
548 ($expected) = ($expected =~ /^tree ($sha1)$/o);
549 die "Unable to get tree from $treeish\n" unless $expected;
550 } elsif ($type eq 'tree') {
551 $expected = $treeish;
552 } else {
553 die "$treeish is a $type, expected tree, tag or commit\n";
554 }
555 return $expected;
556}
557sub get_commit_entry {
559 my ($treeish) = shift;
560 my %log_entry = ( log => '', tree => get_tree_from_treeish($treeish) );
561 my $commit_editmsg = "$ENV{GIT_DIR}/COMMIT_EDITMSG";
562 my $commit_msg = "$ENV{GIT_DIR}/COMMIT_MSG";
563 open my $log_fh, '>', $commit_editmsg or croak $!;
564 my $type = command_oneline(qw/cat-file -t/, $treeish);
566 if ($type eq 'commit' || $type eq 'tag') {
567 my ($msg_fh, $ctx) = command_output_pipe('cat-file',
568 $type, $treeish);
569 my $in_msg = 0;
570 while (<$msg_fh>) {
571 if (!$in_msg) {
572 $in_msg = 1 if (/^\s*$/);
573 } elsif (/^git-svn-id: /) {
574 # skip this for now, we regenerate the
575 # correct one on re-fetch anyways
576 # TODO: set *:merge properties or like...
577 } else {
578 print $log_fh $_ or croak $!;
579 }
580 }
581 command_close_pipe($msg_fh, $ctx);
582 }
583 close $log_fh or croak $!;
584 if ($_edit || ($type eq 'tree')) {
586 my $editor = $ENV{VISUAL} || $ENV{EDITOR} || 'vi';
587 # TODO: strip out spaces, comments, like git-commit.sh
588 system($editor, $commit_editmsg);
589 }
590 rename $commit_editmsg, $commit_msg or croak $!;
591 open $log_fh, '<', $commit_msg or croak $!;
592 { local $/; chomp($log_entry{log} = <$log_fh>); }
593 close $log_fh or croak $!;
594 unlink $commit_msg;
595 \%log_entry;
596}
597sub s_to_file {
599 my ($str, $file, $mode) = @_;
600 open my $fd,'>',$file or croak $!;
601 print $fd $str,"\n" or croak $!;
602 close $fd or croak $!;
603 chmod ($mode &~ umask, $file) if (defined $mode);
604}
605sub file_to_s {
607 my $file = shift;
608 open my $fd,'<',$file or croak "$!: file: $file\n";
609 local $/;
610 my $ret = <$fd>;
611 close $fd or croak $!;
612 $ret =~ s/\s*$//s;
613 return $ret;
614}
615# '<svn username> = real-name <email address>' mapping based on git-svnimport:
617sub load_authors {
618 open my $authors, '<', $_authors or die "Can't open $_authors $!\n";
619 my $log = $cmd eq 'log';
620 while (<$authors>) {
621 chomp;
622 next unless /^(\S+?|\(no author\))\s*=\s*(.+?)\s*<(.+)>\s*$/;
623 my ($user, $name, $email) = ($1, $2, $3);
624 if ($log) {
625 $Git::SVN::Log::rusers{"$name <$email>"} = $user;
626 } else {
627 $users{$user} = [$name, $email];
628 }
629 }
630 close $authors or croak $!;
631}
632# convert GetOpt::Long specs for use by git-config
634sub read_repo_config {
635 return unless -d $ENV{GIT_DIR};
636 my $opts = shift;
637 foreach my $o (keys %$opts) {
638 my $v = $opts->{$o};
639 my ($key) = ($o =~ /^([a-z\-]+)/);
640 $key =~ s/-//g;
641 my $arg = 'git-config';
642 $arg .= ' --int' if ($o =~ /[:=]i$/);
643 $arg .= ' --bool' if ($o !~ /[:=][sfi]$/);
644 if (ref $v eq 'ARRAY') {
645 chomp(my @tmp = `$arg --get-all svn.$key`);
646 @$v = @tmp if @tmp;
647 } else {
648 chomp(my $tmp = `$arg --get svn.$key`);
649 if ($tmp && !($arg =~ / --bool/ && $tmp eq 'false')) {
650 $$v = $tmp;
651 }
652 }
653 }
654}
655sub extract_metadata {
657 my $id = shift or return (undef, undef, undef);
658 my ($url, $rev, $uuid) = ($id =~ /^git-svn-id:\s(\S+?)\@(\d+)
659 \s([a-f\d\-]+)$/x);
660 if (!defined $rev || !$uuid || !$url) {
661 # some of the original repositories I made had
662 # identifiers like this:
663 ($rev, $uuid) = ($id =~/^git-svn-id:\s(\d+)\@([a-f\d\-]+)/);
664 }
665 return ($url, $rev, $uuid);
666}
667sub cmt_metadata {
669 return extract_metadata((grep(/^git-svn-id: /,
670 command(qw/cat-file commit/, shift)))[-1]);
671}
672sub get_commit_time {
674 my $cmt = shift;
675 my $fh = command_output_pipe(qw/rev-list --pretty=raw -n1/, $cmt);
676 while (<$fh>) {
677 /^committer\s(?:.+) (\d+) ([\-\+]?\d+)$/ or next;
678 my ($s, $tz) = ($1, $2);
679 if ($tz =~ s/^\+//) {
680 $s += tz_to_s_offset($tz);
681 } elsif ($tz =~ s/^\-//) {
682 $s -= tz_to_s_offset($tz);
683 }
684 close $fh;
685 return $s;
686 }
687 die "Can't get commit time for commit: $cmt\n";
688}
689sub tz_to_s_offset {
691 my ($tz) = @_;
692 $tz =~ s/(\d\d)$//;
693 return ($1 * 60) + ($tz * 3600);
694}
695package Git::SVN;
697use strict;
698use warnings;
699use vars qw/$default_repo_id $default_ref_id/;
700use Carp qw/croak/;
701use File::Path qw/mkpath/;
702use IPC::Open3;
703# properties that we do not log:
705my %SKIP_PROP;
706BEGIN {
707 %SKIP_PROP = map { $_ => 1 } qw/svn:wc:ra_dav:version-url
708 svn:special svn:executable
709 svn:entry:committed-rev
710 svn:entry:last-author
711 svn:entry:uuid
712 svn:entry:committed-date/;
713}
714sub read_all_remotes {
716 my $r = {};
717 foreach (grep { s/^svn-remote\.// } command(qw/config -l/)) {
718 if (m!^(.+)\.fetch=\s*(.*)\s*:\s*refs/remotes/(.+)\s*$!) {
719 $r->{$1}->{fetch}->{$2} = $3;
720 } elsif (m!^(.+)\.url=\s*(.*)\s*$!) {
721 $r->{$1}->{url} = $2;
722 }
723 }
724 $r;
725}
726sub verify_remotes_sanity {
728 return unless -d $ENV{GIT_DIR};
729 my %seen;
730 foreach (command(qw/config -l/)) {
731 if (m!^svn-remote\.(?:.+)\.fetch=.*:refs/remotes/(\S+)\s*$!) {
732 if ($seen{$1}) {
733 die "Remote ref refs/remote/$1 is tracked by",
734 "\n \"$_\"\nand\n \"$seen{$1}\"\n",
735 "Please resolve this ambiguity in ",
736 "your git configuration file before ",
737 "continuing\n";
738 }
739 $seen{$1} = $_;
740 }
741 }
742}
743# we allow more chars than remotes2config.sh...
745sub sanitize_remote_name {
746 my ($name) = @_;
747 $name =~ tr{A-Za-z0-9:,/+-}{.}c;
748 $name;
749}
750sub init {
752 my ($class, $url, $path, $repo_id, $ref_id) = @_;
753 my $self = _new($class, $repo_id, $ref_id, $path);
754 if (defined $url) {
755 $url =~ s!/+$!!; # strip trailing slash
756 # verify that we aren't overwriting anything:
758 my $orig_url = eval {
759 command_oneline('config', '--get',
760 "svn-remote.$repo_id.url")
761 };
762 if ($orig_url && ($orig_url ne $url)) {
763 die "svn-remote.$repo_id.url already set: ",
764 "$orig_url\nwanted to set to: $url\n";
765 }
766 my ($xrepo_id, $xpath) = find_ref($self->refname);
767 if (defined $xpath) {
768 die "svn-remote.$xrepo_id.fetch already set to track ",
769 "$xpath:refs/remotes/", $self->refname, "\n";
770 }
771 if (!$orig_url) {
772 command_noisy('config',
773 "svn-remote.$repo_id.url", $url);
774 }
775 command_noisy('config', '--add',
776 "svn-remote.$repo_id.fetch",
777 "$path:".$self->refname);
778 }
779 $self->{url} = $url;
780 $self;
781}
782sub find_ref {
784 my ($ref_id) = @_;
785 foreach (command(qw/config -l/)) {
786 next unless m!^svn-remote\.(.+)\.fetch=
787 \s*(.*)\s*:\s*refs/remotes/(.+)\s*$!x;
788 my ($repo_id, $path, $ref) = ($1, $2, $3);
789 if ($ref eq $ref_id) {
790 $path = '' if ($path =~ m#^\./?#);
791 return ($repo_id, $path);
792 }
793 }
794 (undef, undef, undef);
795}
796sub new {
798 my ($class, $ref_id, $repo_id, $path) = @_;
799 if (defined $ref_id && !defined $repo_id && !defined $path) {
800 ($repo_id, $path) = find_ref($ref_id);
801 if (!defined $repo_id) {
802 die "Could not find a \"svn-remote.*.fetch\" key ",
803 "in the repository configuration matching: ",
804 "refs/remotes/$ref_id\n";
805 }
806 }
807 my $self = _new($class, $repo_id, $ref_id, $path);
808 if (!defined $self->{path} || !length $self->{path}) {
809 my $fetch = command_oneline('config', '--get',
810 "svn-remote.$repo_id.fetch",
811 ":refs/remotes/$ref_id\$") or
812 die "Failed to read \"svn-remote.$repo_id.fetch\" ",
813 "\":refs/remotes/$ref_id\$\" in config\n";
814 ($self->{path}, undef) = split(/\s*:\s*/, $fetch);
815 }
816 $self->{url} = command_oneline('config', '--get',
817 "svn-remote.$repo_id.url") or
818 die "Failed to read \"svn-remote.$repo_id.url\" in config\n";
819 $self;
820}
821sub refname { "refs/remotes/$_[0]->{ref_id}" }
823sub ra {
825 my ($self) = shift;
826 $self->{ra} ||= Git::SVN::Ra->new($self->{url});
827}
828sub rel_path {
830 my ($self) = @_;
831 my $repos_root = $self->ra->{repos_root};
832 return $self->{path} if ($self->{url} eq $repos_root);
833 my $url = $self->{url} .
834 (length $self->{path} ? "/$self->{path}" : $self->{path});
835 $url =~ s!^\Q$repos_root\E/*!!g;
836 $url;
837}
838sub copy_remote_ref {
840 my ($self) = @_;
841 my $origin = $::_cp_remote ? $::_cp_remote : 'origin';
842 my $ref = $self->refname;
843 if (command('ls-remote', $origin, $ref)) {
844 command_noisy('fetch', $origin, "$ref:$ref");
845 } elsif ($::_cp_remote && !$::_upgrade) {
846 die "Unable to find remote reference: $ref on $origin\n";
847 }
848}
849sub traverse_ignore {
851 my ($self, $fh, $path, $r) = @_;
852 $path =~ s#^/+##g;
853 my ($dirent, undef, $props) = $self->ra->get_dir($path, $r);
854 my $p = $path;
855 $p =~ s#^\Q$self->{ra}->{svn_path}\E/##;
856 print $fh length $p ? "\n# $p\n" : "\n# /\n";
857 if (my $s = $props->{'svn:ignore'}) {
858 $s =~ s/[\r\n]+/\n/g;
859 chomp $s;
860 if (length $p == 0) {
861 $s =~ s#\n#\n/$p#g;
862 print $fh "/$s\n";
863 } else {
864 $s =~ s#\n#\n/$p/#g;
865 print $fh "/$p/$s\n";
866 }
867 }
868 foreach (sort keys %$dirent) {
869 next if $dirent->{$_}->kind != $SVN::Node::dir;
870 $self->traverse_ignore($fh, "$path/$_", $r);
871 }
872}
873# returns the newest SVN revision number and newest commit SHA1
875sub last_rev_commit {
876 my ($self) = @_;
877 if (defined $self->{last_rev} && defined $self->{last_commit}) {
878 return ($self->{last_rev}, $self->{last_commit});
879 }
880 my $c = ::verify_ref($self->refname.'^0');
881 if ($c) {
882 my $rev = (::cmt_metadata($c))[1];
883 if (defined $rev) {
884 ($self->{last_rev}, $self->{last_commit}) = ($rev, $c);
885 return ($rev, $c);
886 }
887 }
888 my $offset = -41; # from tail
889 my $rl;
890 open my $fh, '<', $self->{db_path} or
891 croak "$self->{db_path} not readable: $!\n";
892 seek $fh, $offset, 2;
893 $rl = readline $fh;
894 defined $rl or return (undef, undef);
895 chomp $rl;
896 while ($c ne $rl && tell $fh != 0) {
897 $offset -= 41;
898 seek $fh, $offset, 2;
899 $rl = readline $fh;
900 defined $rl or return (undef, undef);
901 chomp $rl;
902 }
903 my $rev = tell $fh;
904 croak $! if ($rev < 0);
905 $rev = ($rev - 41) / 41;
906 close $fh or croak $!;
907 ($self->{last_rev}, $self->{last_commit}) = ($rev, $c);
908 return ($rev, $c);
909}
910sub parse_revision {
912 my ($self, $base) = @_;
913 my $head = $self->ra->get_latest_revnum;
914 if (!defined $::_revision || $::_revision eq 'BASE:HEAD') {
915 return ($base + 1, $head) if (defined $base);
916 return (0, $head);
917 }
918 return ($1, $2) if ($::_revision =~ /^(\d+):(\d+)$/);
919 return ($::_revision, $::_revision) if ($::_revision =~ /^\d+$/);
920 if ($::_revision =~ /^BASE:(\d+)$/) {
921 return ($base + 1, $1) if (defined $base);
922 return (0, $head);
923 }
924 return ($1, $head) if ($::_revision =~ /^(\d+):HEAD$/);
925 die "revision argument: $::_revision not understood by git-svn\n",
926 "Try using the command-line svn client instead\n";
927}
928sub tmp_index_do {
930 my ($self, $sub) = @_;
931 my $old_index = $ENV{GIT_INDEX_FILE};
932 $ENV{GIT_INDEX_FILE} = $self->{index};
933 my @ret = &$sub;
934 if ($old_index) {
935 $ENV{GIT_INDEX_FILE} = $old_index;
936 } else {
937 delete $ENV{GIT_INDEX_FILE};
938 }
939 wantarray ? @ret : $ret[0];
940}
941sub assert_index_clean {
943 my ($self, $treeish) = @_;
944 $self->tmp_index_do(sub {
946 command_noisy('read-tree', $treeish) unless -e $self->{index};
947 my $x = command_oneline('write-tree');
948 my ($y) = (command(qw/cat-file commit/, $treeish) =~
949 /^tree ($::sha1)/mo);
950 if ($y ne $x) {
951 unlink $self->{index} or croak $!;
952 command_noisy('read-tree', $treeish);
953 }
954 $x = command_oneline('write-tree');
955 if ($y ne $x) {
956 ::fatal "trees ($treeish) $y != $x\n",
957 "Something is seriously wrong...\n";
958 }
959 });
960}
961sub get_commit_parents {
963 my ($self, $log_entry, @parents) = @_;
964 my (%seen, @ret, @tmp);
965 # commit parents can be conditionally bound to a particular
966 # svn revision via: "svn_revno=commit_sha1", filter them out here:
967 foreach my $p (@parents) {
968 next unless defined $p;
969 if ($p =~ /^(\d+)=($::sha1_short)$/o) {
970 push @tmp, $2 if $1 == $log_entry->{revision};
971 } else {
972 push @tmp, $p if $p =~ /^$::sha1_short$/o;
973 }
974 }
975 if (my $cur = ::verify_ref($self->refname.'^0')) {
976 push @tmp, $cur;
977 }
978 push @tmp, $_ foreach (@{$log_entry->{parents}}, @tmp);
979 while (my $p = shift @tmp) {
980 next if $seen{$p};
981 $seen{$p} = 1;
982 push @ret, $p;
983 # MAXPARENT is defined to 16 in commit-tree.c:
984 last if @ret >= 16;
985 }
986 if (@tmp) {
987 die "r$log_entry->{revision}: No room for parents:\n\t",
988 join("\n\t", @tmp), "\n";
989 }
990 @ret;
991}
992sub full_url {
994 my ($self) = @_;
995 $self->ra->{url} . (length $self->{path} ? '/' . $self->{path} : '');
996}
997sub do_git_commit {
999 my ($self, $log_entry, @parents) = @_;
1000 if (my $c = $self->rev_db_get($log_entry->{revision})) {
1001 croak "$log_entry->{revision} = $c already exists! ",
1002 "Why are we refetching it?\n";
1003 }
1004 my $author = $log_entry->{author};
1005 my ($name, $email) = (defined $::users{$author} ? @{$::users{$author}}
1006 : ($author, "$author\@".$self->ra->uuid));
1007 $ENV{GIT_AUTHOR_NAME} = $ENV{GIT_COMMITTER_NAME} = $name;
1008 $ENV{GIT_AUTHOR_EMAIL} = $ENV{GIT_COMMITTER_EMAIL} = $email;
1009 $ENV{GIT_AUTHOR_DATE} = $ENV{GIT_COMMITTER_DATE} = $log_entry->{date};
1010 my $tree = $log_entry->{tree};
1012 if (!defined $tree) {
1013 $tree = $self->tmp_index_do(sub {
1014 command_oneline('write-tree') });
1015 }
1016 die "Tree is not a valid sha1: $tree\n" if $tree !~ /^$::sha1$/o;
1017 my @exec = ('git-commit-tree', $tree);
1019 foreach ($self->get_commit_parents($log_entry, @parents)) {
1020 push @exec, '-p', $_;
1021 }
1022 defined(my $pid = open3(my $msg_fh, my $out_fh, '>&STDERR', @exec))
1023 or croak $!;
1024 print $msg_fh $log_entry->{log} or croak $!;
1025 print $msg_fh "\ngit-svn-id: ", $self->full_url, '@',
1026 $log_entry->{revision}, ' ',
1027 $self->ra->uuid, "\n" or croak $!;
1028 $msg_fh->flush == 0 or croak $!;
1029 close $msg_fh or croak $!;
1030 chomp(my $commit = do { local $/; <$out_fh> });
1031 close $out_fh or croak $!;
1032 waitpid $pid, 0;
1033 croak $? if $?;
1034 if ($commit !~ /^$::sha1$/o) {
1035 die "Failed to commit, invalid sha1: $commit\n";
1036 }
1037 command_noisy('update-ref',$self->refname, $commit);
1039 $self->rev_db_set($log_entry->{revision}, $commit);
1040 $self->{last_rev} = $log_entry->{revision};
1042 $self->{last_commit} = $commit;
1043 print "r$log_entry->{revision} = $commit\n";
1044 return $commit;
1045}
1046sub revisions_eq {
1048 my ($self, $r0, $r1) = @_;
1049 return 1 if $r0 == $r1;
1050 my $nr = 0;
1051 $self->ra->get_log([$self->{path}], $r0, $r1,
1052 0, 0, 1, sub { $nr++ });
1053 return 0 if ($nr > 1);
1054 return 1;
1055}
1056sub find_parent_branch {
1058 my ($self, $paths, $rev) = @_;
1059 # look for a parent from another branch:
1061 my $i = $paths->{'/'.$self->rel_path} or return;
1062 my $branch_from = $i->copyfrom_path or return;
1063 my $r = $i->copyfrom_rev;
1064 my $repos_root = $self->ra->{repos_root};
1065 my $url = $self->ra->{url};
1066 my $new_url = $repos_root . $branch_from;
1067 print STDERR "Found possible branch point: ",
1068 "$new_url => ", $self->full_url, ", $r\n";
1069 $branch_from =~ s#^/##;
1070 my $remotes = read_all_remotes();
1071 my $gs;
1072 foreach my $repo_id (keys %$remotes) {
1073 my $u = $remotes->{$repo_id}->{url} or next;
1074 next if $url ne $u;
1075 my $fetch = $remotes->{$repo_id}->{fetch};
1076 foreach my $f (keys %$fetch) {
1077 next if $f ne $branch_from;
1078 $gs = Git::SVN->new($fetch->{$f}, $repo_id, $f);
1079 last;
1080 }
1081 last if $gs;
1082 }
1083 unless ($gs) {
1084 my $ref_id = $branch_from;
1085 $ref_id .= "\@$r" if find_ref($ref_id);
1086 # just grow a tail if we're not unique enough :x
1087 $ref_id .= '-' while find_ref($ref_id);
1088 $gs = Git::SVN->init($new_url, '', $ref_id, $ref_id);
1089 }
1090 my ($r0, $parent) = $gs->find_rev_before($r, 1);
1091 if ($::_follow_parent && (!defined $r0 || !defined $parent)) {
1092 foreach (0 .. $r) {
1093 my $log_entry = eval { $gs->do_fetch(undef, $_) };
1094 $gs->do_git_commit($log_entry) if $log_entry;
1095 }
1096 ($r0, $parent) = $gs->last_rev_commit;
1097 }
1098 if (defined $r0 && defined $parent && $gs->revisions_eq($r0, $r)) {
1099 print STDERR "Found branch parent: ($self->{ref_id}) $parent\n";
1100 $self->assert_index_clean($parent);
1101 my $ed;
1102 if ($self->ra->can_do_switch) {
1103 print STDERR "Following parent with do_switch\n";
1104 # do_switch works with svn/trunk >= r22312, but that
1105 # is not included with SVN 1.4.2 (the latest version
1106 # at the moment), so we can't rely on it
1107 $self->{last_commit} = $parent;
1108 $ed = SVN::Git::Fetcher->new($self);
1109 $gs->ra->gs_do_switch($r0, $rev, $gs->{path}, 1,
1110 $self->full_url, $ed)
1111 or die "SVN connection failed somewhere...\n";
1112 } else {
1113 print STDERR "Following parent with do_update\n";
1114 $ed = SVN::Git::Fetcher->new($self);
1115 $self->ra->gs_do_update($rev, $rev, $self->{path},
1116 1, $ed)
1117 or die "SVN connection failed somewhere...\n";
1118 }
1119 return $self->make_log_entry($rev, [$parent], $ed);
1120 }
1121 print STDERR "Branch parent not found...\n";
1122 return undef;
1123}
1124sub do_fetch {
1126 my ($self, $paths, $rev) = @_;
1127 my $ed;
1128 my ($last_rev, @parents);
1129 if ($self->{last_commit}) {
1130 $ed = SVN::Git::Fetcher->new($self);
1131 $last_rev = $self->{last_rev};
1132 $ed->{c} = $self->{last_commit};
1133 @parents = ($self->{last_commit});
1134 } else {
1135 $last_rev = $rev;
1136 if (my $log_entry = $self->find_parent_branch($paths, $rev)) {
1137 return $log_entry;
1138 }
1139 $ed = SVN::Git::Fetcher->new($self);
1140 }
1141 unless ($self->ra->gs_do_update($last_rev, $rev,
1142 $self->{path}, 1, $ed)) {
1143 die "SVN connection failed somewhere...\n";
1144 }
1145 $self->make_log_entry($rev, \@parents, $ed);
1146}
1147sub write_untracked {
1149 my ($self, $rev, $fh, $untracked) = @_;
1150 my $h;
1151 print $fh "r$rev\n" or croak $!;
1152 $h = $untracked->{empty};
1153 foreach (sort keys %$h) {
1154 my $act = $h->{$_} ? '+empty_dir' : '-empty_dir';
1155 print $fh " $act: ", uri_encode($_), "\n" or croak $!;
1156 warn "W: $act: $_\n";
1157 }
1158 foreach my $t (qw/dir_prop file_prop/) {
1159 $h = $untracked->{$t} or next;
1160 foreach my $path (sort keys %$h) {
1161 my $ppath = $path eq '' ? '.' : $path;
1162 foreach my $prop (sort keys %{$h->{$path}}) {
1163 next if $SKIP_PROP{$prop};
1164 my $v = $h->{$path}->{$prop};
1165 if (defined $v) {
1166 print $fh " +$t: ",
1167 uri_encode($ppath), ' ',
1168 uri_encode($prop), ' ',
1169 uri_encode($v), "\n"
1170 or croak $!;
1171 } else {
1172 print $fh " -$t: ",
1173 uri_encode($ppath), ' ',
1174 uri_encode($prop), "\n"
1175 or croak $!;
1176 }
1177 }
1178 }
1179 }
1180 foreach my $t (qw/absent_file absent_directory/) {
1181 $h = $untracked->{$t} or next;
1182 foreach my $parent (sort keys %$h) {
1183 foreach my $path (sort @{$h->{$parent}}) {
1184 print $fh " $t: ",
1185 uri_encode("$parent/$path"), "\n"
1186 or croak $!;
1187 warn "W: $t: $parent/$path ",
1188 "Insufficient permissions?\n";
1189 }
1190 }
1191 }
1192}
1193sub parse_svn_date {
1195 my $date = shift || return '+0000 1970-01-01 00:00:00';
1196 my ($Y,$m,$d,$H,$M,$S) = ($date =~ /^(\d{4})\-(\d\d)\-(\d\d)T
1197 (\d\d)\:(\d\d)\:(\d\d).\d+Z$/x) or
1198 croak "Unable to parse date: $date\n";
1199 "+0000 $Y-$m-$d $H:$M:$S";
1200}
1201sub check_author {
1203 my ($author) = @_;
1204 if (!defined $author || length $author == 0) {
1205 $author = '(no author)';
1206 }
1207 if (defined $::_authors && ! defined $::users{$author}) {
1208 die "Author: $author not defined in $::_authors file\n";
1209 }
1210 $author;
1211}
1212sub make_log_entry {
1214 my ($self, $rev, $parents, $untracked) = @_;
1215 my $rp = $self->ra->rev_proplist($rev);
1216 my %log_entry = ( parents => $parents || [], revision => $rev,
1217 revprops => $rp, log => '');
1218 open my $un, '>>', "$self->{dir}/unhandled.log" or croak $!;
1219 $self->write_untracked($rev, $un, $untracked);
1220 foreach (sort keys %$rp) {
1221 my $v = $rp->{$_};
1222 if (/^svn:(author|date|log)$/) {
1223 $log_entry{$1} = $v;
1224 } else {
1225 print $un " rev_prop: ", uri_encode($_), ' ',
1226 uri_encode($v), "\n";
1227 }
1228 }
1229 close $un or croak $!;
1230 $log_entry{date} = parse_svn_date($log_entry{date});
1231 $log_entry{author} = check_author($log_entry{author});
1232 $log_entry{log} .= "\n";
1233 \%log_entry;
1234}
1235sub fetch {
1237 my ($self, @parents) = @_;
1238 my ($last_rev, $last_commit) = $self->last_rev_commit;
1239 my ($base, $head) = $self->parse_revision($last_rev);
1240 return if ($base > $head);
1241 if (defined $last_commit) {
1242 $self->assert_index_clean($last_commit);
1243 }
1244 my $inc = 1000;
1245 my ($min, $max) = ($base, $head < $base + $inc ? $head : $base + $inc);
1246 my $err_handler = $SVN::Error::handler;
1247 $SVN::Error::handler = \&skip_unknown_revs;
1248 while (1) {
1249 my @revs;
1250 $self->ra->get_log([$self->{path}], $min, $max, 0, 1, 1, sub {
1251 my ($paths, $rev, $author, $date, $log) = @_;
1252 push @revs, [ $paths, $rev ] });
1253 foreach (@revs) {
1254 my $log_entry = $self->do_fetch(@$_);
1255 $self->do_git_commit($log_entry, @parents);
1256 }
1257 last if $max >= $head;
1258 $min = $max + 1;
1259 $max += $inc;
1260 $max = $head if ($max > $head);
1261 }
1262 $SVN::Error::handler = $err_handler;
1263}
1264sub set_tree_cb {
1266 my ($self, $log_entry, $tree, $rev, $date, $author) = @_;
1267 # TODO: enable and test optimized commits:
1268 if (0 && $rev == ($self->{last_rev} + 1)) {
1269 $log_entry->{revision} = $rev;
1270 $log_entry->{author} = $author;
1271 $self->do_git_commit($log_entry, "$rev=$tree");
1272 } else {
1273 $self->fetch("$rev=$tree");
1274 }
1275}
1276sub set_tree {
1278 my ($self, $tree) = (shift, shift);
1279 my $log_entry = ::get_commit_entry($tree);
1280 unless ($self->{last_rev}) {
1281 fatal("Must have an existing revision to commit\n");
1282 }
1283 my $pool = SVN::Pool->new;
1284 my $ed = SVN::Git::Editor->new({ r => $self->{last_rev},
1285 ra => $self->ra->dup,
1286 svn_path => $self->ra->{svn_path}
1287 },
1288 $self->ra->get_commit_editor(
1289 $log_entry->{log}, sub {
1290 $self->set_tree_cb($log_entry,
1291 $tree, @_);
1292 }),
1293 $pool);
1294 my $mods = $ed->apply_diff($self->{last_commit}, $tree);
1295 if (@$mods == 0) {
1296 print "No changes\nr$self->{last_rev} = $tree\n";
1297 }
1298 $pool->clear;
1299}
1300sub skip_unknown_revs {
1302 my ($err) = @_;
1303 my $errno = $err->apr_err();
1304 # Maybe the branch we're tracking didn't
1305 # exist when the repo started, so it's
1306 # not an error if it doesn't, just continue
1307 #
1308 # Wonderfully consistent library, eh?
1309 # 160013 - svn:// and file://
1310 # 175002 - http(s)://
1311 # 175007 - http(s):// (this repo required authorization, too...)
1312 # More codes may be discovered later...
1313 if ($errno == 175007 || $errno == 175002 || $errno == 160013) {
1314 return;
1315 }
1316 croak "Error from SVN, ($errno): ", $err->expanded_message,"\n";
1317}
1318# rev_db:
1320# Tie::File seems to be prone to offset errors if revisions get sparse,
1321# it's not that fast, either. Tie::File is also not in Perl 5.6. So
1322# one of my favorite modules is out :< Next up would be one of the DBM
1323# modules, but I'm not sure which is most portable... So I'll just
1324# go with something that's plain-text, but still capable of
1325# being randomly accessed. So here's my ultra-simple fixed-width
1326# database. All records are 40 characters + "\n", so it's easy to seek
1327# to a revision: (41 * rev) is the byte offset.
1328# A record of 40 0s denotes an empty revision.
1329# And yes, it's still pretty fast (faster than Tie::File).
1330sub rev_db_set {
1332 my ($self, $rev, $commit) = @_;
1333 length $commit == 40 or croak "arg3 must be a full SHA1 hexsum\n";
1334 open my $fh, '+<', $self->{db_path} or croak $!;
1335 my $offset = $rev * 41;
1336 # assume that append is the common case:
1337 seek $fh, 0, 2 or croak $!;
1338 my $pos = tell $fh;
1339 if ($pos < $offset) {
1340 print $fh (('0' x 40),"\n") x (($offset - $pos) / 41)
1341 or croak $!;
1342 }
1343 seek $fh, $offset, 0 or croak $!;
1344 print $fh $commit,"\n" or croak $!;
1345 close $fh or croak $!;
1346}
1347sub rev_db_get {
1349 my ($self, $rev) = @_;
1350 my $ret;
1351 my $offset = $rev * 41;
1352 open my $fh, '<', $self->{db_path} or croak $!;
1353 if (seek $fh, $offset, 0) {
1354 $ret = readline $fh;
1355 if (defined $ret) {
1356 chomp $ret;
1357 $ret = undef if ($ret =~ /^0{40}$/);
1358 }
1359 }
1360 close $fh or croak $!;
1361 $ret;
1362}
1363sub find_rev_before {
1365 my ($self, $rev, $eq_ok) = @_;
1366 --$rev unless $eq_ok;
1367 while ($rev > 0) {
1368 if (my $c = $self->rev_db_get($rev)) {
1369 return ($rev, $c);
1370 }
1371 --$rev;
1372 }
1373 return (undef, undef);
1374}
1375sub _new {
1377 my ($class, $repo_id, $ref_id, $path) = @_;
1378 unless (defined $repo_id && length $repo_id) {
1379 $repo_id = $Git::SVN::default_repo_id;
1380 }
1381 unless (defined $ref_id && length $ref_id) {
1382 $_[2] = $ref_id = $Git::SVN::default_ref_id;
1383 }
1384 $_[1] = $repo_id = sanitize_remote_name($repo_id);
1385 my $dir = "$ENV{GIT_DIR}/svn/$ref_id";
1386 $_[3] = $path = '' unless (defined $path);
1387 mkpath([$dir]);
1388 unless (-f "$dir/.rev_db") {
1389 open my $fh, '>>', "$dir/.rev_db" or croak $!;
1390 close $fh or croak $!;
1391 }
1392 bless { ref_id => $ref_id, dir => $dir, index => "$dir/index",
1393 path => $path,
1394 db_path => "$dir/.rev_db", repo_id => $repo_id }, $class;
1395}
1396sub uri_encode {
1398 my ($f) = @_;
1399 $f =~ s#([^a-zA-Z0-9\*!\:_\./\-])#uc sprintf("%%%02x",ord($1))#eg;
1400 $f
1401}
1402package Git::SVN::Prompt;
1404use strict;
1405use warnings;
1406require SVN::Core;
1407use vars qw/$_no_auth_cache $_username/;
1408sub simple {
1410 my ($cred, $realm, $default_username, $may_save, $pool) = @_;
1411 $may_save = undef if $_no_auth_cache;
1412 $default_username = $_username if defined $_username;
1413 if (defined $default_username && length $default_username) {
1414 if (defined $realm && length $realm) {
1415 print STDERR "Authentication realm: $realm\n";
1416 STDERR->flush;
1417 }
1418 $cred->username($default_username);
1419 } else {
1420 username($cred, $realm, $may_save, $pool);
1421 }
1422 $cred->password(_read_password("Password for '" .
1423 $cred->username . "': ", $realm));
1424 $cred->may_save($may_save);
1425 $SVN::_Core::SVN_NO_ERROR;
1426}
1427sub ssl_server_trust {
1429 my ($cred, $realm, $failures, $cert_info, $may_save, $pool) = @_;
1430 $may_save = undef if $_no_auth_cache;
1431 print STDERR "Error validating server certificate for '$realm':\n";
1432 if ($failures & $SVN::Auth::SSL::UNKNOWNCA) {
1433 print STDERR " - The certificate is not issued by a trusted ",
1434 "authority. Use the\n",
1435 " fingerprint to validate the certificate manually!\n";
1436 }
1437 if ($failures & $SVN::Auth::SSL::CNMISMATCH) {
1438 print STDERR " - The certificate hostname does not match.\n";
1439 }
1440 if ($failures & $SVN::Auth::SSL::NOTYETVALID) {
1441 print STDERR " - The certificate is not yet valid.\n";
1442 }
1443 if ($failures & $SVN::Auth::SSL::EXPIRED) {
1444 print STDERR " - The certificate has expired.\n";
1445 }
1446 if ($failures & $SVN::Auth::SSL::OTHER) {
1447 print STDERR " - The certificate has an unknown error.\n";
1448 }
1449 printf STDERR
1450 "Certificate information:\n".
1451 " - Hostname: %s\n".
1452 " - Valid: from %s until %s\n".
1453 " - Issuer: %s\n".
1454 " - Fingerprint: %s\n",
1455 map $cert_info->$_, qw(hostname valid_from valid_until
1456 issuer_dname fingerprint);
1457 my $choice;
1458prompt:
1459 print STDERR $may_save ?
1460 "(R)eject, accept (t)emporarily or accept (p)ermanently? " :
1461 "(R)eject or accept (t)emporarily? ";
1462 STDERR->flush;
1463 $choice = lc(substr(<STDIN> || 'R', 0, 1));
1464 if ($choice =~ /^t$/i) {
1465 $cred->may_save(undef);
1466 } elsif ($choice =~ /^r$/i) {
1467 return -1;
1468 } elsif ($may_save && $choice =~ /^p$/i) {
1469 $cred->may_save($may_save);
1470 } else {
1471 goto prompt;
1472 }
1473 $cred->accepted_failures($failures);
1474 $SVN::_Core::SVN_NO_ERROR;
1475}
1476sub ssl_client_cert {
1478 my ($cred, $realm, $may_save, $pool) = @_;
1479 $may_save = undef if $_no_auth_cache;
1480 print STDERR "Client certificate filename: ";
1481 STDERR->flush;
1482 chomp(my $filename = <STDIN>);
1483 $cred->cert_file($filename);
1484 $cred->may_save($may_save);
1485 $SVN::_Core::SVN_NO_ERROR;
1486}
1487sub ssl_client_cert_pw {
1489 my ($cred, $realm, $may_save, $pool) = @_;
1490 $may_save = undef if $_no_auth_cache;
1491 $cred->password(_read_password("Password: ", $realm));
1492 $cred->may_save($may_save);
1493 $SVN::_Core::SVN_NO_ERROR;
1494}
1495sub username {
1497 my ($cred, $realm, $may_save, $pool) = @_;
1498 $may_save = undef if $_no_auth_cache;
1499 if (defined $realm && length $realm) {
1500 print STDERR "Authentication realm: $realm\n";
1501 }
1502 my $username;
1503 if (defined $_username) {
1504 $username = $_username;
1505 } else {
1506 print STDERR "Username: ";
1507 STDERR->flush;
1508 chomp($username = <STDIN>);
1509 }
1510 $cred->username($username);
1511 $cred->may_save($may_save);
1512 $SVN::_Core::SVN_NO_ERROR;
1513}
1514sub _read_password {
1516 my ($prompt, $realm) = @_;
1517 print STDERR $prompt;
1518 STDERR->flush;
1519 require Term::ReadKey;
1520 Term::ReadKey::ReadMode('noecho');
1521 my $password = '';
1522 while (defined(my $key = Term::ReadKey::ReadKey(0))) {
1523 last if $key =~ /[\012\015]/; # \n\r
1524 $password .= $key;
1525 }
1526 Term::ReadKey::ReadMode('restore');
1527 print STDERR "\n";
1528 STDERR->flush;
1529 $password;
1530}
1531package main;
1533sub uri_encode {
1535 my ($f) = @_;
1536 $f =~ s#([^a-zA-Z0-9\*!\:_\./\-])#uc sprintf("%%%02x",ord($1))#eg;
1537 $f
1538}
1539sub uri_decode {
1541 my ($f) = @_;
1542 $f =~ tr/+/ /;
1543 $f =~ s/%([A-F0-9]{2})/chr hex($1)/ge;
1544 $f
1545}
1546{
1548 my $kill_stupid_warnings = $SVN::Node::none.$SVN::Node::file.
1549 $SVN::Node::dir.$SVN::Node::unknown.
1550 $SVN::Node::none.$SVN::Node::file.
1551 $SVN::Node::dir.$SVN::Node::unknown.
1552 $SVN::Auth::SSL::CNMISMATCH.
1553 $SVN::Auth::SSL::NOTYETVALID.
1554 $SVN::Auth::SSL::EXPIRED.
1555 $SVN::Auth::SSL::UNKNOWNCA.
1556 $SVN::Auth::SSL::OTHER;
1557}
1558package SVN::Git::Fetcher;
1560use vars qw/@ISA/;
1561use strict;
1562use warnings;
1563use Carp qw/croak/;
1564use IO::File qw//;
1565# file baton members: path, mode_a, mode_b, pool, fh, blob, base
1567sub new {
1568 my ($class, $git_svn) = @_;
1569 my $self = SVN::Delta::Editor->new;
1570 bless $self, $class;
1571 $self->{c} = $git_svn->{last_commit} if exists $git_svn->{last_commit};
1572 $self->{empty} = {};
1573 $self->{dir_prop} = {};
1574 $self->{file_prop} = {};
1575 $self->{absent_dir} = {};
1576 $self->{absent_file} = {};
1577 ($self->{gui}, $self->{ctx}) = $git_svn->tmp_index_do(
1578 sub { command_input_pipe(qw/update-index -z --index-info/) } );
1579 require Digest::MD5;
1580 $self;
1581}
1582sub set_path_strip {
1584 my ($self, $path) = @_;
1585 $self->{path_strip} = qr/^\Q$path\E\/?/;
1586}
1587sub open_root {
1589 { path => '' };
1590}
1591sub open_directory {
1593 my ($self, $path, $pb, $rev) = @_;
1594 { path => $path };
1595}
1596sub git_path {
1598 my ($self, $path) = @_;
1599 $path =~ s!$self->{path_strip}!! if $self->{path_strip};
1600 $path;
1601}
1602sub delete_entry {
1604 my ($self, $path, $rev, $pb) = @_;
1605 my $gui = $self->{gui};
1606 my $gpath = $self->git_path($path);
1608 # remove entire directories.
1609 if (command('ls-tree', $self->{c}, '--', $gpath) =~ /^040000 tree/) {
1610 my ($ls, $ctx) = command_output_pipe(qw/ls-tree
1611 -r --name-only -z/,
1612 $self->{c}, '--', $gpath);
1613 local $/ = "\0";
1614 while (<$ls>) {
1615 print $gui '0 ',0 x 40,"\t",$_ or croak $!;
1616 print "\tD\t$_\n" unless $self->{q};
1617 }
1618 print "\tD\t$gpath/\n" unless $self->{q};
1619 command_close_pipe($ls, $ctx);
1620 $self->{empty}->{$path} = 0
1621 } else {
1622 print $gui '0 ',0 x 40,"\t",$gpath,"\0" or croak $!;
1623 print "\tD\t$gpath\n" unless $self->{q};
1624 }
1625 undef;
1626}
1627sub open_file {
1629 my ($self, $path, $pb, $rev) = @_;
1630 my $gpath = $self->git_path($path);
1631 my ($mode, $blob) = (command('ls-tree', $self->{c}, '--', $gpath)
1632 =~ /^(\d{6}) blob ([a-f\d]{40})\t/);
1633 unless (defined $mode && defined $blob) {
1634 die "$path was not found in commit $self->{c} (r$rev)\n";
1635 }
1636 { path => $path, mode_a => $mode, mode_b => $mode, blob => $blob,
1637 pool => SVN::Pool->new, action => 'M' };
1638}
1639sub add_file {
1641 my ($self, $path, $pb, $cp_path, $cp_rev) = @_;
1642 my ($dir, $file) = ($path =~ m#^(.*?)/?([^/]+)$#);
1643 delete $self->{empty}->{$dir};
1644 { path => $path, mode_a => 100644, mode_b => 100644,
1645 pool => SVN::Pool->new, action => 'A' };
1646}
1647sub add_directory {
1649 my ($self, $path, $cp_path, $cp_rev) = @_;
1650 my ($dir, $file) = ($path =~ m#^(.*?)/?([^/]+)$#);
1651 delete $self->{empty}->{$dir};
1652 $self->{empty}->{$path} = 1;
1653 { path => $path };
1654}
1655sub change_dir_prop {
1657 my ($self, $db, $prop, $value) = @_;
1658 $self->{dir_prop}->{$db->{path}} ||= {};
1659 $self->{dir_prop}->{$db->{path}}->{$prop} = $value;
1660 undef;
1661}
1662sub absent_directory {
1664 my ($self, $path, $pb) = @_;
1665 $self->{absent_dir}->{$pb->{path}} ||= [];
1666 push @{$self->{absent_dir}->{$pb->{path}}}, $path;
1667 undef;
1668}
1669sub absent_file {
1671 my ($self, $path, $pb) = @_;
1672 $self->{absent_file}->{$pb->{path}} ||= [];
1673 push @{$self->{absent_file}->{$pb->{path}}}, $path;
1674 undef;
1675}
1676sub change_file_prop {
1678 my ($self, $fb, $prop, $value) = @_;
1679 if ($prop eq 'svn:executable') {
1680 if ($fb->{mode_b} != 120000) {
1681 $fb->{mode_b} = defined $value ? 100755 : 100644;
1682 }
1683 } elsif ($prop eq 'svn:special') {
1684 $fb->{mode_b} = defined $value ? 120000 : 100644;
1685 } else {
1686 $self->{file_prop}->{$fb->{path}} ||= {};
1687 $self->{file_prop}->{$fb->{path}}->{$prop} = $value;
1688 }
1689 undef;
1690}
1691sub apply_textdelta {
1693 my ($self, $fb, $exp) = @_;
1694 my $fh = IO::File->new_tmpfile;
1695 $fh->autoflush(1);
1696 # $fh gets auto-closed() by SVN::TxDelta::apply(),
1697 # (but $base does not,) so dup() it for reading in close_file
1698 open my $dup, '<&', $fh or croak $!;
1699 my $base = IO::File->new_tmpfile;
1700 $base->autoflush(1);
1701 if ($fb->{blob}) {
1702 defined (my $pid = fork) or croak $!;
1703 if (!$pid) {
1704 open STDOUT, '>&', $base or croak $!;
1705 print STDOUT 'link ' if ($fb->{mode_a} == 120000);
1706 exec qw/git-cat-file blob/, $fb->{blob} or croak $!;
1707 }
1708 waitpid $pid, 0;
1709 croak $? if $?;
1710 if (defined $exp) {
1712 seek $base, 0, 0 or croak $!;
1713 my $md5 = Digest::MD5->new;
1714 $md5->addfile($base);
1715 my $got = $md5->hexdigest;
1716 die "Checksum mismatch: $fb->{path} $fb->{blob}\n",
1717 "expected: $exp\n",
1718 " got: $got\n" if ($got ne $exp);
1719 }
1720 }
1721 seek $base, 0, 0 or croak $!;
1722 $fb->{fh} = $dup;
1723 $fb->{base} = $base;
1724 [ SVN::TxDelta::apply($base, $fh, undef, $fb->{path}, $fb->{pool}) ];
1725}
1726sub close_file {
1728 my ($self, $fb, $exp) = @_;
1729 my $hash;
1730 my $path = $self->git_path($fb->{path});
1731 if (my $fh = $fb->{fh}) {
1732 seek($fh, 0, 0) or croak $!;
1733 my $md5 = Digest::MD5->new;
1734 $md5->addfile($fh);
1735 my $got = $md5->hexdigest;
1736 die "Checksum mismatch: $path\n",
1737 "expected: $exp\n got: $got\n" if ($got ne $exp);
1738 seek($fh, 0, 0) or croak $!;
1739 if ($fb->{mode_b} == 120000) {
1740 read($fh, my $buf, 5) == 5 or croak $!;
1741 $buf eq 'link ' or die "$path has mode 120000",
1742 "but is not a link\n";
1743 }
1744 defined(my $pid = open my $out,'-|') or die "Can't fork: $!\n";
1745 if (!$pid) {
1746 open STDIN, '<&', $fh or croak $!;
1747 exec qw/git-hash-object -w --stdin/ or croak $!;
1748 }
1749 chomp($hash = do { local $/; <$out> });
1750 close $out or croak $!;
1751 close $fh or croak $!;
1752 $hash =~ /^[a-f\d]{40}$/ or die "not a sha1: $hash\n";
1753 close $fb->{base} or croak $!;
1754 } else {
1755 $hash = $fb->{blob} or die "no blob information\n";
1756 }
1757 $fb->{pool}->clear;
1758 my $gui = $self->{gui};
1759 print $gui "$fb->{mode_b} $hash\t$path\0" or croak $!;
1760 print "\t$fb->{action}\t$path\n" if $fb->{action} && ! $self->{q};
1761 undef;
1762}
1763sub abort_edit {
1765 my $self = shift;
1766 eval { command_close_pipe($self->{gui}, $self->{ctx}) };
1767 $self->SUPER::abort_edit(@_);
1768}
1769sub close_edit {
1771 my $self = shift;
1772 command_close_pipe($self->{gui}, $self->{ctx});
1773 $self->{git_commit_ok} = 1;
1774 $self->SUPER::close_edit(@_);
1775}
1776package SVN::Git::Editor;
1778use vars qw/@ISA/;
1779use strict;
1780use warnings;
1781use Carp qw/croak/;
1782use IO::File;
1783sub new {
1785 my $class = shift;
1786 my $git_svn = shift;
1787 my $self = SVN::Delta::Editor->new(@_);
1788 bless $self, $class;
1789 foreach (qw/svn_path r ra/) {
1790 die "$_ required!\n" unless (defined $git_svn->{$_});
1791 $self->{$_} = $git_svn->{$_};
1792 }
1793 $self->{pool} = SVN::Pool->new;
1794 $self->{bat} = { '' => $self->open_root($self->{r}, $self->{pool}) };
1795 $self->{rm} = { };
1796 require Digest::MD5;
1797 return $self;
1798}
1799sub split_path {
1801 return ($_[0] =~ m#^(.*?)/?([^/]+)$#);
1802}
1803sub repo_path {
1805 (defined $_[1] && length $_[1]) ? $_[1] : ''
1806}
1807sub url_path {
1809 my ($self, $path) = @_;
1810 $self->{ra}->{url} . '/' . $self->repo_path($path);
1811}
1812sub rmdirs {
1814 my ($self, $tree_b) = @_;
1815 my $rm = $self->{rm};
1816 delete $rm->{''}; # we never delete the url we're tracking
1817 return unless %$rm;
1818 foreach (keys %$rm) {
1820 my @d = split m#/#, $_;
1821 my $c = shift @d;
1822 $rm->{$c} = 1;
1823 while (@d) {
1824 $c .= '/' . shift @d;
1825 $rm->{$c} = 1;
1826 }
1827 }
1828 delete $rm->{$self->{svn_path}};
1829 delete $rm->{''}; # we never delete the url we're tracking
1830 return unless %$rm;
1831 my ($fh, $ctx) = command_output_pipe(
1833 qw/ls-tree --name-only -r -z/, $tree_b);
1834 local $/ = "\0";
1835 while (<$fh>) {
1836 chomp;
1837 my @dn = split m#/#, $_;
1838 while (pop @dn) {
1839 delete $rm->{join '/', @dn};
1840 }
1841 unless (%$rm) {
1842 close $fh;
1843 return;
1844 }
1845 }
1846 command_close_pipe($fh, $ctx);
1847 my ($r, $p, $bat) = ($self->{r}, $self->{pool}, $self->{bat});
1849 foreach my $d (sort { $b =~ tr#/#/# <=> $a =~ tr#/#/# } keys %$rm) {
1850 $self->close_directory($bat->{$d}, $p);
1851 my ($dn) = ($d =~ m#^(.*?)/?(?:[^/]+)$#);
1852 print "\tD+\t$d/\n" unless $::_q;
1853 $self->SUPER::delete_entry($d, $r, $bat->{$dn}, $p);
1854 delete $bat->{$d};
1855 }
1856}
1857sub open_or_add_dir {
1859 my ($self, $full_path, $baton) = @_;
1860 my $t = $self->{ra}->check_path($full_path, $self->{r});
1861 if ($t == $SVN::Node::none) {
1862 return $self->add_directory($full_path, $baton,
1863 undef, -1, $self->{pool});
1864 } elsif ($t == $SVN::Node::dir) {
1865 return $self->open_directory($full_path, $baton,
1866 $self->{r}, $self->{pool});
1867 }
1868 print STDERR "$full_path already exists in repository at ",
1869 "r$self->{r} and it is not a directory (",
1870 ($t == $SVN::Node::file ? 'file' : 'unknown'),"/$t)\n";
1871 exit 1;
1872}
1873sub ensure_path {
1875 my ($self, $path) = @_;
1876 my $bat = $self->{bat};
1877 $path = $self->repo_path($path);
1878 return $bat->{''} unless (length $path);
1879 my @p = split m#/+#, $path;
1880 my $c = shift @p;
1881 $bat->{$c} ||= $self->open_or_add_dir($c, $bat->{''});
1882 while (@p) {
1883 my $c0 = $c;
1884 $c .= '/' . shift @p;
1885 $bat->{$c} ||= $self->open_or_add_dir($c, $bat->{$c0});
1886 }
1887 return $bat->{$c};
1888}
1889sub A {
1891 my ($self, $m) = @_;
1892 my ($dir, $file) = split_path($m->{file_b});
1893 my $pbat = $self->ensure_path($dir);
1894 my $fbat = $self->add_file($self->repo_path($m->{file_b}), $pbat,
1895 undef, -1);
1896 print "\tA\t$m->{file_b}\n" unless $::_q;
1897 $self->chg_file($fbat, $m);
1898 $self->close_file($fbat,undef,$self->{pool});
1899}
1900sub C {
1902 my ($self, $m) = @_;
1903 my ($dir, $file) = split_path($m->{file_b});
1904 my $pbat = $self->ensure_path($dir);
1905 my $fbat = $self->add_file($self->repo_path($m->{file_b}), $pbat,
1906 $self->url_path($m->{file_a}), $self->{r});
1907 print "\tC\t$m->{file_a} => $m->{file_b}\n" unless $::_q;
1908 $self->chg_file($fbat, $m);
1909 $self->close_file($fbat,undef,$self->{pool});
1910}
1911sub delete_entry {
1913 my ($self, $path, $pbat) = @_;
1914 my $rpath = $self->repo_path($path);
1915 my ($dir, $file) = split_path($rpath);
1916 $self->{rm}->{$dir} = 1;
1917 $self->SUPER::delete_entry($rpath, $self->{r}, $pbat, $self->{pool});
1918}
1919sub R {
1921 my ($self, $m) = @_;
1922 my ($dir, $file) = split_path($m->{file_b});
1923 my $pbat = $self->ensure_path($dir);
1924 my $fbat = $self->add_file($self->repo_path($m->{file_b}), $pbat,
1925 $self->url_path($m->{file_a}), $self->{r});
1926 print "\tR\t$m->{file_a} => $m->{file_b}\n" unless $::_q;
1927 $self->chg_file($fbat, $m);
1928 $self->close_file($fbat,undef,$self->{pool});
1929 ($dir, $file) = split_path($m->{file_a});
1931 $pbat = $self->ensure_path($dir);
1932 $self->delete_entry($m->{file_a}, $pbat);
1933}
1934sub M {
1936 my ($self, $m) = @_;
1937 my ($dir, $file) = split_path($m->{file_b});
1938 my $pbat = $self->ensure_path($dir);
1939 my $fbat = $self->open_file($self->repo_path($m->{file_b}),
1940 $pbat,$self->{r},$self->{pool});
1941 print "\t$m->{chg}\t$m->{file_b}\n" unless $::_q;
1942 $self->chg_file($fbat, $m);
1943 $self->close_file($fbat,undef,$self->{pool});
1944}
1945sub T { shift->M(@_) }
1947sub change_file_prop {
1949 my ($self, $fbat, $pname, $pval) = @_;
1950 $self->SUPER::change_file_prop($fbat, $pname, $pval, $self->{pool});
1951}
1952sub chg_file {
1954 my ($self, $fbat, $m) = @_;
1955 if ($m->{mode_b} =~ /755$/ && $m->{mode_a} !~ /755$/) {
1956 $self->change_file_prop($fbat,'svn:executable','*');
1957 } elsif ($m->{mode_b} !~ /755$/ && $m->{mode_a} =~ /755$/) {
1958 $self->change_file_prop($fbat,'svn:executable',undef);
1959 }
1960 my $fh = IO::File->new_tmpfile or croak $!;
1961 if ($m->{mode_b} =~ /^120/) {
1962 print $fh 'link ' or croak $!;
1963 $self->change_file_prop($fbat,'svn:special','*');
1964 } elsif ($m->{mode_a} =~ /^120/ && $m->{mode_b} !~ /^120/) {
1965 $self->change_file_prop($fbat,'svn:special',undef);
1966 }
1967 defined(my $pid = fork) or croak $!;
1968 if (!$pid) {
1969 open STDOUT, '>&', $fh or croak $!;
1970 exec qw/git-cat-file blob/, $m->{sha1_b} or croak $!;
1971 }
1972 waitpid $pid, 0;
1973 croak $? if $?;
1974 $fh->flush == 0 or croak $!;
1975 seek $fh, 0, 0 or croak $!;
1976 my $md5 = Digest::MD5->new;
1978 $md5->addfile($fh) or croak $!;
1979 seek $fh, 0, 0 or croak $!;
1980 my $exp = $md5->hexdigest;
1982 my $pool = SVN::Pool->new;
1983 my $atd = $self->apply_textdelta($fbat, undef, $pool);
1984 my $got = SVN::TxDelta::send_stream($fh, @$atd, $pool);
1985 die "Checksum mismatch\nexpected: $exp\ngot: $got\n" if ($got ne $exp);
1986 $pool->clear;
1987 close $fh or croak $!;
1989}
1990sub D {
1992 my ($self, $m) = @_;
1993 my ($dir, $file) = split_path($m->{file_b});
1994 my $pbat = $self->ensure_path($dir);
1995 print "\tD\t$m->{file_b}\n" unless $::_q;
1996 $self->delete_entry($m->{file_b}, $pbat);
1997}
1998sub close_edit {
2000 my ($self) = @_;
2001 my ($p,$bat) = ($self->{pool}, $self->{bat});
2002 foreach (sort { $b =~ tr#/#/# <=> $a =~ tr#/#/# } keys %$bat) {
2003 $self->close_directory($bat->{$_}, $p);
2004 }
2005 $self->SUPER::close_edit($p);
2006 $p->clear;
2007}
2008sub abort_edit {
2010 my ($self) = @_;
2011 $self->SUPER::abort_edit($self->{pool});
2012 $self->{pool}->clear;
2013}
2014# this drives the editor
2016sub apply_diff {
2017 my ($self, $tree_a, $tree_b) = @_;
2018 my @diff_tree = qw(diff-tree -z -r);
2019 if ($::_cp_similarity) {
2020 push @diff_tree, "-C$::_cp_similarity";
2021 } else {
2022 push @diff_tree, '-C';
2023 }
2024 push @diff_tree, '--find-copies-harder' if $::_find_copies_harder;
2025 push @diff_tree, "-l$::_l" if defined $::_l;
2026 push @diff_tree, $tree_a, $tree_b;
2027 my ($diff_fh, $ctx) = command_output_pipe(@diff_tree);
2028 my $nl = $/;
2029 local $/ = "\0";
2030 my $state = 'meta';
2031 my @mods;
2032 while (<$diff_fh>) {
2033 chomp $_; # this gets rid of the trailing "\0"
2034 if ($state eq 'meta' && /^:(\d{6})\s(\d{6})\s
2035 $::sha1\s($::sha1)\s
2036 ([MTCRAD])\d*$/xo) {
2037 push @mods, { mode_a => $1, mode_b => $2,
2038 sha1_b => $3, chg => $4 };
2039 if ($4 =~ /^(?:C|R)$/) {
2040 $state = 'file_a';
2041 } else {
2042 $state = 'file_b';
2043 }
2044 } elsif ($state eq 'file_a') {
2045 my $x = $mods[$#mods] or croak "Empty array\n";
2046 if ($x->{chg} !~ /^(?:C|R)$/) {
2047 croak "Error parsing $_, $x->{chg}\n";
2048 }
2049 $x->{file_a} = $_;
2050 $state = 'file_b';
2051 } elsif ($state eq 'file_b') {
2052 my $x = $mods[$#mods] or croak "Empty array\n";
2053 if (exists $x->{file_a} && $x->{chg} !~ /^(?:C|R)$/) {
2054 croak "Error parsing $_, $x->{chg}\n";
2055 }
2056 if (!exists $x->{file_a} && $x->{chg} =~ /^(?:C|R)$/) {
2057 croak "Error parsing $_, $x->{chg}\n";
2058 }
2059 $x->{file_b} = $_;
2060 $state = 'meta';
2061 } else {
2062 croak "Error parsing $_\n";
2063 }
2064 }
2065 command_close_pipe($diff_fh, $ctx);
2066 $/ = $nl;
2067 my %o = ( D => 1, R => 0, C => -1, A => 3, M => 3, T => 3 );
2069 foreach my $m (sort { $o{$a->{chg}} <=> $o{$b->{chg}} } @mods) {
2070 my $f = $m->{chg};
2071 if (defined $o{$f}) {
2072 $self->$f($m);
2073 } else {
2074 fatal("Invalid change type: $f\n");
2075 }
2076 }
2077 $self->rmdirs($tree_b) if $::_rmdir;
2078 if (@mods == 0) {
2079 $self->abort_edit;
2080 } else {
2081 $self->close_edit;
2082 }
2083 \@mods;
2084}
2085package Git::SVN::Ra;
2087use vars qw/@ISA $config_dir/;
2088use strict;
2089use warnings;
2090my ($can_do_switch);
2091my %RA;
2092BEGIN {
2094 # enforce temporary pool usage for some simple functions
2095 my $e;
2096 foreach (qw/get_latest_revnum rev_proplist get_file
2097 check_path get_dir get_uuid get_repos_root/) {
2098 $e .= "sub $_ {
2099 my \$self = shift;
2100 my \$pool = SVN::Pool->new;
2101 my \@ret = \$self->SUPER::$_(\@_,\$pool);
2102 \$pool->clear;
2103 wantarray ? \@ret : \$ret[0]; }\n";
2104 }
2105 eval $e;
2106}
2107sub new {
2109 my ($class, $url) = @_;
2110 $url =~ s!/+$!!;
2111 return $RA{$url} if $RA{$url};
2112 SVN::_Core::svn_config_ensure($config_dir, undef);
2114 my ($baton, $callbacks) = SVN::Core::auth_open_helper([
2115 SVN::Client::get_simple_provider(),
2116 SVN::Client::get_ssl_server_trust_file_provider(),
2117 SVN::Client::get_simple_prompt_provider(
2118 \&Git::SVN::Prompt::simple, 2),
2119 SVN::Client::get_ssl_client_cert_prompt_provider(
2120 \&Git::SVN::Prompt::ssl_client_cert, 2),
2121 SVN::Client::get_ssl_client_cert_pw_prompt_provider(
2122 \&Git::SVN::Prompt::ssl_client_cert_pw, 2),
2123 SVN::Client::get_username_provider(),
2124 SVN::Client::get_ssl_server_trust_prompt_provider(
2125 \&Git::SVN::Prompt::ssl_server_trust),
2126 SVN::Client::get_username_prompt_provider(
2127 \&Git::SVN::Prompt::username, 2),
2128 ]);
2129 my $config = SVN::Core::config_get_config($config_dir);
2130 my $self = SVN::Ra->new(url => $url, auth => $baton,
2131 config => $config,
2132 pool => SVN::Pool->new,
2133 auth_provider_callbacks => $callbacks);
2134 $self->{svn_path} = $url;
2135 $self->{repos_root} = $self->get_repos_root;
2136 $self->{svn_path} =~ s#^\Q$self->{repos_root}\E/*##;
2137 $RA{$url} = bless $self, $class;
2138}
2139sub DESTROY {
2141 # do not call the real DESTROY since we store ourselves in %RA
2142}
2143sub dup {
2145 my ($self) = @_;
2146 my $dup = SVN::Ra->new(pool => SVN::Pool->new,
2147 map { $_ => $self->{$_} } qw/config url
2148 auth auth_provider_callbacks repos_root svn_path/);
2149 bless $dup, ref $self;
2150}
2151sub get_log {
2153 my ($self, @args) = @_;
2154 my $pool = SVN::Pool->new;
2155 $args[4]-- if $args[4] && ! $::_follow_parent;
2156 splice(@args, 3, 1) if ($SVN::Core::VERSION le '1.2.0');
2157 my $ret = $self->SUPER::get_log(@args, $pool);
2158 $pool->clear;
2159 $ret;
2160}
2161sub get_commit_editor {
2163 my ($self, $log, $cb, $pool) = @_;
2164 my @lock = $SVN::Core::VERSION ge '1.2.0' ? (undef, 0) : ();
2165 $self->SUPER::get_commit_editor($log, $cb, @lock, $pool);
2166}
2167sub uuid {
2169 my ($self) = @_;
2170 $self->{uuid} ||= $self->get_uuid;
2171}
2172sub gs_do_update {
2174 my ($self, $rev_a, $rev_b, $path, $recurse, $editor) = @_;
2175 my $pool = SVN::Pool->new;
2176 $editor->set_path_strip($path);
2177 my $reporter = $self->do_update($rev_b, $path, $recurse,
2178 $editor, $pool);
2179 my @lock = $SVN::Core::VERSION ge '1.2.0' ? (undef) : ();
2180 my $new = ($rev_a == $rev_b);
2181 $reporter->set_path('', $rev_a, $new, @lock, $pool);
2182 $reporter->finish_report($pool);
2183 $pool->clear;
2184 $editor->{git_commit_ok};
2185}
2186sub gs_do_switch {
2188 my ($self, $rev_a, $rev_b, $path, $recurse, $url_b, $editor) = @_;
2189 my $pool = SVN::Pool->new;
2190 $editor->set_path_strip($path);
2191 my $reporter = $self->do_switch($rev_b, $path, $recurse,
2192 $url_b, $editor, $pool);
2193 my @lock = $SVN::Core::VERSION ge '1.2.0' ? (undef) : ();
2194 $reporter->set_path('', $rev_a, 0, @lock, $pool);
2195 $reporter->finish_report($pool);
2196 $pool->clear;
2197 $editor->{git_commit_ok};
2198}
2199sub can_do_switch {
2201 my $self = shift;
2202 unless (defined $can_do_switch) {
2203 my $pool = SVN::Pool->new;
2204 my $rep = eval {
2205 $self->do_switch(1, '', 0, $self->{url},
2206 SVN::Delta::Editor->new, $pool);
2207 };
2208 if ($@) {
2209 $can_do_switch = 0;
2210 } else {
2211 $rep->abort_report($pool);
2212 $can_do_switch = 1;
2213 }
2214 $pool->clear;
2215 }
2216 $can_do_switch;
2217}
2218package Git::SVN::Log;
2220use strict;
2221use warnings;
2222use POSIX qw/strftime/;
2223use vars qw/$TZ $limit $color $pager $non_recursive $verbose $oneline
2224 %rusers $show_commit $incremental/;
2225my $l_fmt;
2226sub cmt_showable {
2228 my ($c) = @_;
2229 return 1 if defined $c->{r};
2230 if ($c->{l} && $c->{l}->[-1] eq "...\n" &&
2231 $c->{a_raw} =~ /\@([a-f\d\-]+)>$/) {
2232 my @log = command(qw/cat-file commit/, $c->{c});
2233 shift @log while ($log[0] ne "\n");
2234 shift @log;
2235 @{$c->{l}} = grep !/^git-svn-id: /, @log;
2236 (undef, $c->{r}, undef) = ::extract_metadata(
2238 (grep(/^git-svn-id: /, @log))[-1]);
2239 }
2240 return defined $c->{r};
2241}
2242sub log_use_color {
2244 return 1 if $color;
2245 my ($dc, $dcvar);
2246 $dcvar = 'color.diff';
2247 $dc = `git-config --get $dcvar`;
2248 if ($dc eq '') {
2249 # nothing at all; fallback to "diff.color"
2250 $dcvar = 'diff.color';
2251 $dc = `git-config --get $dcvar`;
2252 }
2253 chomp($dc);
2254 if ($dc eq 'auto') {
2255 my $pc;
2256 $pc = `git-config --get color.pager`;
2257 if ($pc eq '') {
2258 # does not have it -- fallback to pager.color
2259 $pc = `git-config --bool --get pager.color`;
2260 }
2261 else {
2262 $pc = `git-config --bool --get color.pager`;
2263 if ($?) {
2264 $pc = 'false';
2265 }
2266 }
2267 chomp($pc);
2268 if (-t *STDOUT || (defined $pager && $pc eq 'true')) {
2269 return ($ENV{TERM} && $ENV{TERM} ne 'dumb');
2270 }
2271 return 0;
2272 }
2273 return 0 if $dc eq 'never';
2274 return 1 if $dc eq 'always';
2275 chomp($dc = `git-config --bool --get $dcvar`);
2276 return ($dc eq 'true');
2277}
2278sub git_svn_log_cmd {
2280 my ($r_min, $r_max) = @_;
2281 my $gs = Git::SVN->_new;
2282 my @cmd = (qw/log --abbrev-commit --pretty=raw --default/,
2283 $gs->refname);
2284 push @cmd, '-r' unless $non_recursive;
2285 push @cmd, qw/--raw --name-status/ if $verbose;
2286 push @cmd, '--color' if log_use_color();
2287 return @cmd unless defined $r_max;
2288 if ($r_max == $r_min) {
2289 push @cmd, '--max-count=1';
2290 if (my $c = $gs->rev_db_get($r_max)) {
2291 push @cmd, $c;
2292 }
2293 } else {
2294 my ($c_min, $c_max);
2295 $c_max = $gs->rev_db_get($r_max);
2296 $c_min = $gs->rev_db_get($r_min);
2297 if (defined $c_min && defined $c_max) {
2298 if ($r_max > $r_max) {
2299 push @cmd, "$c_min..$c_max";
2300 } else {
2301 push @cmd, "$c_max..$c_min";
2302 }
2303 } elsif ($r_max > $r_min) {
2304 push @cmd, $c_max;
2305 } else {
2306 push @cmd, $c_min;
2307 }
2308 }
2309 return @cmd;
2310}
2311# adapted from pager.c
2313sub config_pager {
2314 $pager ||= $ENV{GIT_PAGER} || $ENV{PAGER};
2315 if (!defined $pager) {
2316 $pager = 'less';
2317 } elsif (length $pager == 0 || $pager eq 'cat') {
2318 $pager = undef;
2319 }
2320}
2321sub run_pager {
2323 return unless -t *STDOUT;
2324 pipe my $rfd, my $wfd or return;
2325 defined(my $pid = fork) or ::fatal "Can't fork: $!\n";
2326 if (!$pid) {
2327 open STDOUT, '>&', $wfd or
2328 ::fatal "Can't redirect to stdout: $!\n";
2329 return;
2330 }
2331 open STDIN, '<&', $rfd or ::fatal "Can't redirect stdin: $!\n";
2332 $ENV{LESS} ||= 'FRSX';
2333 exec $pager or ::fatal "Can't run pager: $! ($pager)\n";
2334}
2335sub get_author_info {
2337 my ($dest, $author, $t, $tz) = @_;
2338 $author =~ s/(?:^\s*|\s*$)//g;
2339 $dest->{a_raw} = $author;
2340 my $au;
2341 if ($::_authors) {
2342 $au = $rusers{$author} || undef;
2343 }
2344 if (!$au) {
2345 ($au) = ($author =~ /<([^>]+)\@[^>]+>$/);
2346 }
2347 $dest->{t} = $t;
2348 $dest->{tz} = $tz;
2349 $dest->{a} = $au;
2350 # Date::Parse isn't in the standard Perl distro :(
2351 if ($tz =~ s/^\+//) {
2352 $t += ::tz_to_s_offset($tz);
2353 } elsif ($tz =~ s/^\-//) {
2354 $t -= ::tz_to_s_offset($tz);
2355 }
2356 $dest->{t_utc} = $t;
2357}
2358sub process_commit {
2360 my ($c, $r_min, $r_max, $defer) = @_;
2361 if (defined $r_min && defined $r_max) {
2362 if ($r_min == $c->{r} && $r_min == $r_max) {
2363 show_commit($c);
2364 return 0;
2365 }
2366 return 1 if $r_min == $r_max;
2367 if ($r_min < $r_max) {
2368 # we need to reverse the print order
2369 return 0 if (defined $limit && --$limit < 0);
2370 push @$defer, $c;
2371 return 1;
2372 }
2373 if ($r_min != $r_max) {
2374 return 1 if ($r_min < $c->{r});
2375 return 1 if ($r_max > $c->{r});
2376 }
2377 }
2378 return 0 if (defined $limit && --$limit < 0);
2379 show_commit($c);
2380 return 1;
2381}
2382sub show_commit {
2384 my $c = shift;
2385 if ($oneline) {
2386 my $x = "\n";
2387 if (my $l = $c->{l}) {
2388 while ($l->[0] =~ /^\s*$/) { shift @$l }
2389 $x = $l->[0];
2390 }
2391 $l_fmt ||= 'A' . length($c->{r});
2392 print 'r',pack($l_fmt, $c->{r}),' | ';
2393 print "$c->{c} | " if $show_commit;
2394 print $x;
2395 } else {
2396 show_commit_normal($c);
2397 }
2398}
2399sub show_commit_changed_paths {
2401 my ($c) = @_;
2402 return unless $c->{changed};
2403 print "Changed paths:\n", @{$c->{changed}};
2404}
2405sub show_commit_normal {
2407 my ($c) = @_;
2408 print '-' x72, "\nr$c->{r} | ";
2409 print "$c->{c} | " if $show_commit;
2410 print "$c->{a} | ", strftime("%Y-%m-%d %H:%M:%S %z (%a, %d %b %Y)",
2411 localtime($c->{t_utc})), ' | ';
2412 my $nr_line = 0;
2413 if (my $l = $c->{l}) {
2415 while ($l->[$#$l] eq "\n" && $#$l > 0
2416 && $l->[($#$l - 1)] eq "\n") {
2417 pop @$l;
2418 }
2419 $nr_line = scalar @$l;
2420 if (!$nr_line) {
2421 print "1 line\n\n\n";
2422 } else {
2423 if ($nr_line == 1) {
2424 $nr_line = '1 line';
2425 } else {
2426 $nr_line .= ' lines';
2427 }
2428 print $nr_line, "\n";
2429 show_commit_changed_paths($c);
2430 print "\n";
2431 print $_ foreach @$l;
2432 }
2433 } else {
2434 print "1 line\n";
2435 show_commit_changed_paths($c);
2436 print "\n";
2437 }
2439 foreach my $x (qw/raw diff/) {
2440 if ($c->{$x}) {
2441 print "\n";
2442 print $_ foreach @{$c->{$x}}
2443 }
2444 }
2445}
2446sub cmd_show_log {
2448 my (@args) = @_;
2449 my ($r_min, $r_max);
2450 my $r_last = -1; # prevent dupes
2451 if (defined $TZ) {
2452 $ENV{TZ} = $TZ;
2453 } else {
2454 delete $ENV{TZ};
2455 }
2456 if (defined $::_revision) {
2457 if ($::_revision =~ /^(\d+):(\d+)$/) {
2458 ($r_min, $r_max) = ($1, $2);
2459 } elsif ($::_revision =~ /^\d+$/) {
2460 $r_min = $r_max = $::_revision;
2461 } else {
2462 ::fatal "-r$::_revision is not supported, use ",
2463 "standard \'git log\' arguments instead\n";
2464 }
2465 }
2466 config_pager();
2468 @args = (git_svn_log_cmd($r_min, $r_max), @args);
2469 my $log = command_output_pipe(@args);
2470 run_pager();
2471 my (@k, $c, $d);
2472 my $esc_color = qr/(?:\033\[(?:(?:\d+;)*\d*)?m)*/;
2473 while (<$log>) {
2474 if (/^${esc_color}commit ($::sha1_short)/o) {
2475 my $cmt = $1;
2476 if ($c && cmt_showable($c) && $c->{r} != $r_last) {
2477 $r_last = $c->{r};
2478 process_commit($c, $r_min, $r_max, \@k) or
2479 goto out;
2480 }
2481 $d = undef;
2482 $c = { c => $cmt };
2483 } elsif (/^${esc_color}author (.+) (\d+) ([\-\+]?\d+)$/o) {
2484 get_author_info($c, $1, $2, $3);
2485 } elsif (/^${esc_color}(?:tree|parent|committer) /o) {
2486 # ignore
2487 } elsif (/^${esc_color}:\d{6} \d{6} $::sha1_short/o) {
2488 push @{$c->{raw}}, $_;
2489 } elsif (/^${esc_color}[ACRMDT]\t/) {
2490 # we could add $SVN->{svn_path} here, but that requires
2491 # remote access at the moment (repo_path_split)...
2492 s#^(${esc_color})([ACRMDT])\t#$1 $2 #o;
2493 push @{$c->{changed}}, $_;
2494 } elsif (/^${esc_color}diff /o) {
2495 $d = 1;
2496 push @{$c->{diff}}, $_;
2497 } elsif ($d) {
2498 push @{$c->{diff}}, $_;
2499 } elsif (/^${esc_color} (git-svn-id:.+)$/o) {
2500 ($c->{url}, $c->{r}, undef) = ::extract_metadata($1);
2501 } elsif (s/^${esc_color} //o) {
2502 push @{$c->{l}}, $_;
2503 }
2504 }
2505 if ($c && defined $c->{r} && $c->{r} != $r_last) {
2506 $r_last = $c->{r};
2507 process_commit($c, $r_min, $r_max, \@k);
2508 }
2509 if (@k) {
2510 my $swap = $r_max;
2511 $r_max = $r_min;
2512 $r_min = $swap;
2513 process_commit($_, $r_min, $r_max) foreach reverse @k;
2514 }
2515out:
2516 close $log;
2517 print '-' x72,"\n" unless $incremental || $oneline;
2518}
2519package Git::SVN::Migration;
2521# these version numbers do NOT correspond to actual version numbers
2522# of git nor git-svn. They are just relative.
2523#
2524# v0 layout: .git/$id/info/url, refs/heads/$id-HEAD
2525#
2526# v1 layout: .git/$id/info/url, refs/remotes/$id
2527#
2528# v2 layout: .git/svn/$id/info/url, refs/remotes/$id
2529#
2530# v3 layout: .git/svn/$id, refs/remotes/$id
2531# - info/url may remain for backwards compatibility
2532# - this is what we migrate up to this layout automatically,
2533# - this will be used by git svn init on single branches
2534#
2535# v4 layout: .git/svn/$repo_id/$id, refs/remotes/$repo_id/$id
2536# - this is only created for newly multi-init-ed
2537# repositories. Similar in spirit to the
2538# --use-separate-remotes option in git-clone (now default)
2539# - we do not automatically migrate to this (following
2540# the example set by core git)
2541use strict;
2542use warnings;
2543use Carp qw/croak/;
2544use File::Path qw/mkpath/;
2545use File::Basename qw/dirname basename/;
2546use vars qw/$_minimize/;
2547sub migrate_from_v0 {
2549 my $git_dir = $ENV{GIT_DIR};
2550 return undef unless -d $git_dir;
2551 my ($fh, $ctx) = command_output_pipe(qw/rev-parse --symbolic --all/);
2552 my $migrated = 0;
2553 while (<$fh>) {
2554 chomp;
2555 my ($id, $orig_ref) = ($_, $_);
2556 next unless $id =~ s#^refs/heads/(.+)-HEAD$#$1#;
2557 next unless -f "$git_dir/$id/info/url";
2558 my $new_ref = "refs/remotes/$id";
2559 if (::verify_ref("$new_ref^0")) {
2560 print STDERR "W: $orig_ref is probably an old ",
2561 "branch used by an ancient version of ",
2562 "git-svn.\n",
2563 "However, $new_ref also exists.\n",
2564 "We will not be able ",
2565 "to use this branch until this ",
2566 "ambiguity is resolved.\n";
2567 next;
2568 }
2569 print STDERR "Migrating from v0 layout...\n" if !$migrated;
2570 print STDERR "Renaming ref: $orig_ref => $new_ref\n";
2571 command_noisy('update-ref', $new_ref, $orig_ref);
2572 command_noisy('update-ref', '-d', $orig_ref, $orig_ref);
2573 $migrated++;
2574 }
2575 command_close_pipe($fh, $ctx);
2576 print STDERR "Done migrating from v0 layout...\n" if $migrated;
2577 $migrated;
2578}
2579sub migrate_from_v1 {
2581 my $git_dir = $ENV{GIT_DIR};
2582 my $migrated = 0;
2583 return $migrated unless -d $git_dir;
2584 my $svn_dir = "$git_dir/svn";
2585 # just in case somebody used 'svn' as their $id at some point...
2587 return $migrated if -d $svn_dir && ! -f "$svn_dir/info/url";
2588 print STDERR "Migrating from a git-svn v1 layout...\n";
2590 mkpath([$svn_dir]);
2591 print STDERR "Data from a previous version of git-svn exists, but\n\t",
2592 "$svn_dir\n\t(required for this version ",
2593 "($::VERSION) of git-svn) does not. exist\n";
2594 my ($fh, $ctx) = command_output_pipe(qw/rev-parse --symbolic --all/);
2595 while (<$fh>) {
2596 my $x = $_;
2597 next unless $x =~ s#^refs/remotes/##;
2598 chomp $x;
2599 next unless -f "$git_dir/$x/info/url";
2600 my $u = eval { ::file_to_s("$git_dir/$x/info/url") };
2601 next unless $u;
2602 my $dn = dirname("$git_dir/svn/$x");
2603 mkpath([$dn]) unless -d $dn;
2604 if ($x eq 'svn') { # they used 'svn' as GIT_SVN_ID:
2605 mkpath(["$git_dir/svn/svn"]);
2606 print STDERR " - $git_dir/$x/info => ",
2607 "$git_dir/svn/$x/info\n";
2608 rename "$git_dir/$x/info", "$git_dir/svn/$x/info" or
2609 croak "$!: $x";
2610 # don't worry too much about these, they probably
2611 # don't exist with repos this old (save for index,
2612 # and we can easily regenerate that)
2613 foreach my $f (qw/unhandled.log index .rev_db/) {
2614 rename "$git_dir/$x/$f", "$git_dir/svn/$x/$f";
2615 }
2616 } else {
2617 print STDERR " - $git_dir/$x => $git_dir/svn/$x\n";
2618 rename "$git_dir/$x", "$git_dir/svn/$x" or
2619 croak "$!: $x";
2620 }
2621 $migrated++;
2622 }
2623 command_close_pipe($fh, $ctx);
2624 print STDERR "Done migrating from a git-svn v1 layout\n";
2625 $migrated;
2626}
2627sub read_old_urls {
2629 my ($l_map, $pfx, $path) = @_;
2630 my @dir;
2631 foreach (<$path/*>) {
2632 if (-r "$_/info/url") {
2633 $pfx .= '/' if $pfx && $pfx !~ m!/$!;
2634 my $ref_id = $pfx . basename $_;
2635 my $url = ::file_to_s("$_/info/url");
2636 $l_map->{$ref_id} = $url;
2637 } elsif (-d $_) {
2638 push @dir, $_;
2639 }
2640 }
2641 foreach (@dir) {
2642 my $x = $_;
2643 $x =~ s!^\Q$ENV{GIT_DIR}\E/svn/!!o;
2644 read_old_urls($l_map, $x, $_);
2645 }
2646}
2647sub migrate_from_v2 {
2649 my @cfg = command(qw/config -l/);
2650 return if grep /^svn-remote\..+\.url=/, @cfg;
2651 my %l_map;
2652 read_old_urls(\%l_map, '', "$ENV{GIT_DIR}/svn");
2653 my $migrated = 0;
2654 foreach my $ref_id (sort keys %l_map) {
2656 Git::SVN->init($l_map{$ref_id}, '', $ref_id, $ref_id);
2657 $migrated++;
2658 }
2659 $migrated;
2660}
2661sub minimize_connections {
2663 my $r = Git::SVN::read_all_remotes();
2664 my $new_urls = {};
2665 my $root_repos = {};
2666 foreach my $repo_id (keys %$r) {
2667 my $url = $r->{$repo_id}->{url} or next;
2668 my $fetch = $r->{$repo_id}->{fetch} or next;
2669 my $ra = Git::SVN::Ra->new($url);
2670 # skip existing cases where we already connect to the root
2672 if (($ra->{url} eq $ra->{repos_root}) ||
2673 (Git::SVN::sanitize_remote_name($ra->{repos_root}) eq
2674 $repo_id)) {
2675 $root_repos->{$ra->{url}} = $repo_id;
2676 next;
2677 }
2678 my $root_ra = Git::SVN::Ra->new($ra->{repos_root});
2680 my $root_path = $ra->{url};
2681 $root_path =~ s#^\Q$ra->{repos_root}\E/*##;
2682 foreach my $path (keys %$fetch) {
2683 my $ref_id = $fetch->{$path};
2684 my $gs = Git::SVN->new($ref_id, $repo_id, $path);
2685 # make sure we can read when connecting to
2687 # a higher level of a repository
2688 my ($last_rev, undef) = $gs->last_rev_commit;
2689 if (!defined $last_rev) {
2690 $last_rev = eval {
2691 $root_ra->get_latest_revnum;
2692 };
2693 next if $@;
2694 }
2695 my $new = $root_path;
2696 $new .= length $path ? "/$path" : '';
2697 eval {
2698 $root_ra->get_log([$new], $last_rev, $last_rev,
2699 0, 0, 1, sub { });
2700 };
2701 next if $@;
2702 $new_urls->{$ra->{repos_root}}->{$new} =
2703 { ref_id => $ref_id,
2704 old_repo_id => $repo_id,
2705 old_path => $path };
2706 }
2707 }
2708 my @emptied;
2710 foreach my $url (keys %$new_urls) {
2711 # see if we can re-use an existing [svn-remote "repo_id"]
2712 # instead of creating a(n ugly) new section:
2713 my $repo_id = $root_repos->{$url} ||
2714 Git::SVN::sanitize_remote_name($url);
2715 my $fetch = $new_urls->{$url};
2717 foreach my $path (keys %$fetch) {
2718 my $x = $fetch->{$path};
2719 Git::SVN->init($url, $path, $repo_id, $x->{ref_id});
2720 my $pfx = "svn-remote.$x->{old_repo_id}";
2721 my $old_fetch = quotemeta("$x->{old_path}:".
2723 "refs/remotes/$x->{ref_id}");
2724 command_noisy(qw/config --unset/,
2725 "$pfx.fetch", '^'. $old_fetch . '$');
2726 delete $r->{$x->{old_repo_id}}->
2727 {fetch}->{$x->{old_path}};
2728 if (!keys %{$r->{$x->{old_repo_id}}->{fetch}}) {
2729 command_noisy(qw/config --unset/,
2730 "$pfx.url");
2731 push @emptied, $x->{old_repo_id}
2732 }
2733 }
2734 }
2735 if (@emptied) {
2736 my $file = $ENV{GIT_CONFIG} || $ENV{GIT_CONFIG_LOCAL} ||
2737 "$ENV{GIT_DIR}/config";
2738 print STDERR <<EOF;
2739The following [svn-remote] sections in your config file ($file) are empty
2740and can be safely removed:
2741EOF
2742 print STDERR "[svn-remote \"$_\"]\n" foreach @emptied;
2743 }
2744}
2745sub migration_check {
2747 migrate_from_v0();
2748 migrate_from_v1();
2749 migrate_from_v2();
2750 minimize_connections() if $_minimize;
2751}
2752__END__
2754Data structures:
2756$log_entry hashref as returned by libsvn_log_entry()
2758{
2759 log => 'whitespace-formatted log entry
2760', # trailing newline is preserved
2761 revision => '8', # integer
2762 date => '2004-02-24T17:01:44.108345Z', # commit date
2763 author => 'committer name'
2764};
2765@mods = array of diff-index line hashes, each element represents one line
2767 of diff-index output
2768diff-index line ($m hash)
2770{
2771 mode_a => first column of diff-index output, no leading ':',
2772 mode_b => second column of diff-index output,
2773 sha1_b => sha1sum of the final blob,
2774 chg => change type [MCRADT],
2775 file_a => original file name of a file (iff chg is 'C' or 'R')
2776 file_b => new/current file name of a file (any chg)
2777}
2778;
2779# retval of read_url_paths{,_all}();
2781$l_map = {
2782 # repository root url
2783 'https://svn.musicpd.org' => {
2784 # repository path # GIT_SVN_ID
2785 'mpd/trunk' => 'trunk',
2786 'mpd/tags/0.11.5' => 'tags/0.11.5',
2787 },
2788}
2789Notes:
2791 I don't trust the each() function on unless I created %hash myself
2792 because the internal iterator may not have started at base.