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 $name;
749}
750sub find_existing_remote {
752 my ($url, $remotes) = @_;
753 my $existing;
754 foreach my $repo_id (keys %$remotes) {
755 my $u = $remotes->{$repo_id}->{url} or next;
756 next if $u ne $url;
757 $existing = $repo_id;
758 last;
759 }
760 $existing;
761}
762sub init_remote_config {
764 my ($self, $url) = @_;
765 $url =~ s!/+$!!; # strip trailing slash
766 my $r = read_all_remotes();
767 my $existing = find_existing_remote($url, $r);
768 if ($existing) {
769 print STDERR "Using existing ",
770 "[svn-remote \"$existing\"]\n";
771 $self->{repo_id} = $existing;
772 } else {
773 my $min_url = Git::SVN::Ra->new($url)->minimize_url;
774 $existing = find_existing_remote($min_url, $r);
775 if ($existing) {
776 print STDERR "Using existing ",
777 "[svn-remote \"$existing\"]\n";
778 $self->{repo_id} = $existing;
779 }
780 if ($min_url ne $url) {
781 print STDERR "Using higher level of URL: ",
782 "$url => $min_url\n";
783 my $old_path = $self->{path};
784 $self->{path} = $url;
785 $self->{path} =~ s!^\Q$min_url\E/*!!;
786 if (length $old_path) {
787 $self->{path} .= "/$old_path";
788 }
789 $url = $min_url;
790 }
791 }
792 my $orig_url;
793 if (!$existing) {
794 # verify that we aren't overwriting anything:
795 $orig_url = eval {
796 command_oneline('config', '--get',
797 "svn-remote.$self->{repo_id}.url")
798 };
799 if ($orig_url && ($orig_url ne $url)) {
800 die "svn-remote.$self->{repo_id}.url already set: ",
801 "$orig_url\nwanted to set to: $url\n";
802 }
803 }
804 my ($xrepo_id, $xpath) = find_ref($self->refname);
805 if (defined $xpath) {
806 die "svn-remote.$xrepo_id.fetch already set to track ",
807 "$xpath:refs/remotes/", $self->refname, "\n";
808 }
809 command_noisy('config',
810 "svn-remote.$self->{repo_id}.url", $url);
811 command_noisy('config', '--add',
812 "svn-remote.$self->{repo_id}.fetch",
813 "$self->{path}:".$self->refname);
814 $self->{url} = $url;
815}
816sub init {
818 my ($class, $url, $path, $repo_id, $ref_id) = @_;
819 my $self = _new($class, $repo_id, $ref_id, $path);
820 if (defined $url) {
821 $self->init_remote_config($url);
822 }
823 $self;
824}
825sub find_ref {
827 my ($ref_id) = @_;
828 foreach (command(qw/config -l/)) {
829 next unless m!^svn-remote\.(.+)\.fetch=
830 \s*(.*)\s*:\s*refs/remotes/(.+)\s*$!x;
831 my ($repo_id, $path, $ref) = ($1, $2, $3);
832 if ($ref eq $ref_id) {
833 $path = '' if ($path =~ m#^\./?#);
834 return ($repo_id, $path);
835 }
836 }
837 (undef, undef, undef);
838}
839sub new {
841 my ($class, $ref_id, $repo_id, $path) = @_;
842 if (defined $ref_id && !defined $repo_id && !defined $path) {
843 ($repo_id, $path) = find_ref($ref_id);
844 if (!defined $repo_id) {
845 die "Could not find a \"svn-remote.*.fetch\" key ",
846 "in the repository configuration matching: ",
847 "refs/remotes/$ref_id\n";
848 }
849 }
850 my $self = _new($class, $repo_id, $ref_id, $path);
851 if (!defined $self->{path} || !length $self->{path}) {
852 my $fetch = command_oneline('config', '--get',
853 "svn-remote.$repo_id.fetch",
854 ":refs/remotes/$ref_id\$") or
855 die "Failed to read \"svn-remote.$repo_id.fetch\" ",
856 "\":refs/remotes/$ref_id\$\" in config\n";
857 ($self->{path}, undef) = split(/\s*:\s*/, $fetch);
858 }
859 $self->{url} = command_oneline('config', '--get',
860 "svn-remote.$repo_id.url") or
861 die "Failed to read \"svn-remote.$repo_id.url\" in config\n";
862 $self;
863}
864sub refname { "refs/remotes/$_[0]->{ref_id}" }
866sub ra {
868 my ($self) = shift;
869 $self->{ra} ||= Git::SVN::Ra->new($self->{url});
870}
871sub rel_path {
873 my ($self) = @_;
874 my $repos_root = $self->ra->{repos_root};
875 return $self->{path} if ($self->{url} eq $repos_root);
876 my $url = $self->{url} .
877 (length $self->{path} ? "/$self->{path}" : $self->{path});
878 $url =~ s!^\Q$repos_root\E/*!!g;
879 $url;
880}
881sub copy_remote_ref {
883 my ($self) = @_;
884 my $origin = $::_cp_remote ? $::_cp_remote : 'origin';
885 my $ref = $self->refname;
886 if (command('ls-remote', $origin, $ref)) {
887 command_noisy('fetch', $origin, "$ref:$ref");
888 } elsif ($::_cp_remote && !$::_upgrade) {
889 die "Unable to find remote reference: $ref on $origin\n";
890 }
891}
892sub traverse_ignore {
894 my ($self, $fh, $path, $r) = @_;
895 $path =~ s#^/+##g;
896 my ($dirent, undef, $props) = $self->ra->get_dir($path, $r);
897 my $p = $path;
898 $p =~ s#^\Q$self->{ra}->{svn_path}\E/##;
899 print $fh length $p ? "\n# $p\n" : "\n# /\n";
900 if (my $s = $props->{'svn:ignore'}) {
901 $s =~ s/[\r\n]+/\n/g;
902 chomp $s;
903 if (length $p == 0) {
904 $s =~ s#\n#\n/$p#g;
905 print $fh "/$s\n";
906 } else {
907 $s =~ s#\n#\n/$p/#g;
908 print $fh "/$p/$s\n";
909 }
910 }
911 foreach (sort keys %$dirent) {
912 next if $dirent->{$_}->kind != $SVN::Node::dir;
913 $self->traverse_ignore($fh, "$path/$_", $r);
914 }
915}
916# returns the newest SVN revision number and newest commit SHA1
918sub last_rev_commit {
919 my ($self) = @_;
920 if (defined $self->{last_rev} && defined $self->{last_commit}) {
921 return ($self->{last_rev}, $self->{last_commit});
922 }
923 my $c = ::verify_ref($self->refname.'^0');
924 if ($c) {
925 my $rev = (::cmt_metadata($c))[1];
926 if (defined $rev) {
927 ($self->{last_rev}, $self->{last_commit}) = ($rev, $c);
928 return ($rev, $c);
929 }
930 }
931 my $offset = -41; # from tail
932 my $rl;
933 open my $fh, '<', $self->{db_path} or
934 croak "$self->{db_path} not readable: $!\n";
935 seek $fh, $offset, 2;
936 $rl = readline $fh;
937 defined $rl or return (undef, undef);
938 chomp $rl;
939 while ($c ne $rl && tell $fh != 0) {
940 $offset -= 41;
941 seek $fh, $offset, 2;
942 $rl = readline $fh;
943 defined $rl or return (undef, undef);
944 chomp $rl;
945 }
946 my $rev = tell $fh;
947 croak $! if ($rev < 0);
948 $rev = ($rev - 41) / 41;
949 close $fh or croak $!;
950 ($self->{last_rev}, $self->{last_commit}) = ($rev, $c);
951 return ($rev, $c);
952}
953sub parse_revision {
955 my ($self, $base) = @_;
956 my $head = $self->ra->get_latest_revnum;
957 if (!defined $::_revision || $::_revision eq 'BASE:HEAD') {
958 return ($base + 1, $head) if (defined $base);
959 return (0, $head);
960 }
961 return ($1, $2) if ($::_revision =~ /^(\d+):(\d+)$/);
962 return ($::_revision, $::_revision) if ($::_revision =~ /^\d+$/);
963 if ($::_revision =~ /^BASE:(\d+)$/) {
964 return ($base + 1, $1) if (defined $base);
965 return (0, $head);
966 }
967 return ($1, $head) if ($::_revision =~ /^(\d+):HEAD$/);
968 die "revision argument: $::_revision not understood by git-svn\n",
969 "Try using the command-line svn client instead\n";
970}
971sub tmp_index_do {
973 my ($self, $sub) = @_;
974 my $old_index = $ENV{GIT_INDEX_FILE};
975 $ENV{GIT_INDEX_FILE} = $self->{index};
976 my @ret = &$sub;
977 if ($old_index) {
978 $ENV{GIT_INDEX_FILE} = $old_index;
979 } else {
980 delete $ENV{GIT_INDEX_FILE};
981 }
982 wantarray ? @ret : $ret[0];
983}
984sub assert_index_clean {
986 my ($self, $treeish) = @_;
987 $self->tmp_index_do(sub {
989 command_noisy('read-tree', $treeish) unless -e $self->{index};
990 my $x = command_oneline('write-tree');
991 my ($y) = (command(qw/cat-file commit/, $treeish) =~
992 /^tree ($::sha1)/mo);
993 if ($y ne $x) {
994 unlink $self->{index} or croak $!;
995 command_noisy('read-tree', $treeish);
996 }
997 $x = command_oneline('write-tree');
998 if ($y ne $x) {
999 ::fatal "trees ($treeish) $y != $x\n",
1000 "Something is seriously wrong...\n";
1001 }
1002 });
1003}
1004sub get_commit_parents {
1006 my ($self, $log_entry, @parents) = @_;
1007 my (%seen, @ret, @tmp);
1008 # commit parents can be conditionally bound to a particular
1009 # svn revision via: "svn_revno=commit_sha1", filter them out here:
1010 foreach my $p (@parents) {
1011 next unless defined $p;
1012 if ($p =~ /^(\d+)=($::sha1_short)$/o) {
1013 push @tmp, $2 if $1 == $log_entry->{revision};
1014 } else {
1015 push @tmp, $p if $p =~ /^$::sha1_short$/o;
1016 }
1017 }
1018 if (my $cur = ::verify_ref($self->refname.'^0')) {
1019 push @tmp, $cur;
1020 }
1021 push @tmp, $_ foreach (@{$log_entry->{parents}}, @tmp);
1022 while (my $p = shift @tmp) {
1023 next if $seen{$p};
1024 $seen{$p} = 1;
1025 push @ret, $p;
1026 # MAXPARENT is defined to 16 in commit-tree.c:
1027 last if @ret >= 16;
1028 }
1029 if (@tmp) {
1030 die "r$log_entry->{revision}: No room for parents:\n\t",
1031 join("\n\t", @tmp), "\n";
1032 }
1033 @ret;
1034}
1035sub full_url {
1037 my ($self) = @_;
1038 $self->ra->{url} . (length $self->{path} ? '/' . $self->{path} : '');
1039}
1040sub do_git_commit {
1042 my ($self, $log_entry, @parents) = @_;
1043 if (my $c = $self->rev_db_get($log_entry->{revision})) {
1044 croak "$log_entry->{revision} = $c already exists! ",
1045 "Why are we refetching it?\n";
1046 }
1047 my $author = $log_entry->{author};
1048 my ($name, $email) = (defined $::users{$author} ? @{$::users{$author}}
1049 : ($author, "$author\@".$self->ra->uuid));
1050 $ENV{GIT_AUTHOR_NAME} = $ENV{GIT_COMMITTER_NAME} = $name;
1051 $ENV{GIT_AUTHOR_EMAIL} = $ENV{GIT_COMMITTER_EMAIL} = $email;
1052 $ENV{GIT_AUTHOR_DATE} = $ENV{GIT_COMMITTER_DATE} = $log_entry->{date};
1053 my $tree = $log_entry->{tree};
1055 if (!defined $tree) {
1056 $tree = $self->tmp_index_do(sub {
1057 command_oneline('write-tree') });
1058 }
1059 die "Tree is not a valid sha1: $tree\n" if $tree !~ /^$::sha1$/o;
1060 my @exec = ('git-commit-tree', $tree);
1062 foreach ($self->get_commit_parents($log_entry, @parents)) {
1063 push @exec, '-p', $_;
1064 }
1065 defined(my $pid = open3(my $msg_fh, my $out_fh, '>&STDERR', @exec))
1066 or croak $!;
1067 print $msg_fh $log_entry->{log} or croak $!;
1068 print $msg_fh "\ngit-svn-id: ", $self->full_url, '@',
1069 $log_entry->{revision}, ' ',
1070 $self->ra->uuid, "\n" or croak $!;
1071 $msg_fh->flush == 0 or croak $!;
1072 close $msg_fh or croak $!;
1073 chomp(my $commit = do { local $/; <$out_fh> });
1074 close $out_fh or croak $!;
1075 waitpid $pid, 0;
1076 croak $? if $?;
1077 if ($commit !~ /^$::sha1$/o) {
1078 die "Failed to commit, invalid sha1: $commit\n";
1079 }
1080 command_noisy('update-ref',$self->refname, $commit);
1082 $self->rev_db_set($log_entry->{revision}, $commit);
1083 $self->{last_rev} = $log_entry->{revision};
1085 $self->{last_commit} = $commit;
1086 print "r$log_entry->{revision} = $commit\n";
1087 return $commit;
1088}
1089sub revisions_eq {
1091 my ($self, $r0, $r1) = @_;
1092 return 1 if $r0 == $r1;
1093 my $nr = 0;
1094 $self->ra->get_log([$self->{path}], $r0, $r1,
1095 0, 0, 1, sub { $nr++ });
1096 return 0 if ($nr > 1);
1097 return 1;
1098}
1099sub find_parent_branch {
1101 my ($self, $paths, $rev) = @_;
1102 return undef unless $::_follow_parent;
1103 # look for a parent from another branch:
1105 my @b_path_components = split m#/#, $self->rel_path;
1106 my @a_path_components;
1107 my $i;
1108 while (@b_path_components) {
1109 $i = $paths->{'/'.join('/', @b_path_components)};
1110 last if $i;
1111 unshift(@a_path_components, pop(@b_path_components));
1112 }
1113 goto not_found unless defined $i;
1114 my $branch_from = $i->copyfrom_path or goto not_found;
1115 if (@a_path_components) {
1116 print STDERR "branch_from: $branch_from => ";
1117 $branch_from .= '/'.join('/', @a_path_components);
1118 print STDERR $branch_from, "\n";
1119 }
1120 my $r = $i->copyfrom_rev;
1121 my $repos_root = $self->ra->{repos_root};
1122 my $url = $self->ra->{url};
1123 my $new_url = $repos_root . $branch_from;
1124 print STDERR "Found possible branch point: ",
1125 "$new_url => ", $self->full_url, ", $r\n";
1126 $branch_from =~ s#^/##;
1127 my $remotes = read_all_remotes();
1128 my $gs;
1129 foreach my $repo_id (keys %$remotes) {
1130 my $u = $remotes->{$repo_id}->{url} or next;
1131 next if $url ne $u;
1132 my $fetch = $remotes->{$repo_id}->{fetch};
1133 foreach my $f (keys %$fetch) {
1134 next if $f ne $branch_from;
1135 $gs = Git::SVN->new($fetch->{$f}, $repo_id, $f);
1136 last;
1137 }
1138 last if $gs;
1139 }
1140 unless ($gs) {
1141 my $ref_id = $branch_from;
1142 $ref_id .= "\@$r" if find_ref($ref_id);
1143 # just grow a tail if we're not unique enough :x
1144 $ref_id .= '-' while find_ref($ref_id);
1145 $gs = Git::SVN->init($new_url, '', $ref_id, $ref_id);
1146 }
1147 my ($r0, $parent) = $gs->find_rev_before($r, 1);
1148 if ($::_follow_parent && (!defined $r0 || !defined $parent)) {
1149 $gs->ra->get_log([$gs->{path}], 0, $r, 0, 1, 1, sub {
1150 my ($paths, $rev) = @_;
1151 my $log_entry = eval { $gs->do_fetch($paths, $rev) };
1152 $gs->do_git_commit($log_entry) if $log_entry;
1153 });
1154 ($r0, $parent) = $gs->last_rev_commit;
1155 }
1156 if (defined $r0 && defined $parent && $gs->revisions_eq($r0, $r)) {
1157 print STDERR "Found branch parent: ($self->{ref_id}) $parent\n";
1158 $self->assert_index_clean($parent);
1159 my $ed;
1160 if ($self->ra->can_do_switch) {
1161 print STDERR "Following parent with do_switch\n";
1162 # do_switch works with svn/trunk >= r22312, but that
1163 # is not included with SVN 1.4.2 (the latest version
1164 # at the moment), so we can't rely on it
1165 $self->{last_commit} = $parent;
1166 $ed = SVN::Git::Fetcher->new($self);
1167 $gs->ra->gs_do_switch($r0, $rev, $gs->{path}, 1,
1168 $self->full_url, $ed)
1169 or die "SVN connection failed somewhere...\n";
1170 } else {
1171 print STDERR "Following parent with do_update\n";
1172 $ed = SVN::Git::Fetcher->new($self);
1173 $self->ra->gs_do_update($rev, $rev, $self->{path},
1174 1, $ed)
1175 or die "SVN connection failed somewhere...\n";
1176 }
1177 return $self->make_log_entry($rev, [$parent], $ed);
1178 }
1179not_found:
1180 print STDERR "Branch parent for path: '/",
1181 $self->rel_path, "' not found\n";
1182 return undef unless $paths;
1183 foreach my $x (sort keys %$paths) {
1184 my $p = $paths->{$x};
1185 print STDERR ' ', $p->action, ' ', $x;
1186 if (my $cp_from = $p->copyfrom_path) {
1187 print STDERR "(from $cp_from:", $p->copyfrom_rev, ')';
1188 }
1189 print STDERR "\n";
1190 }
1191 return undef;
1192}
1193sub do_fetch {
1195 my ($self, $paths, $rev) = @_;
1196 my $ed;
1197 my ($last_rev, @parents);
1198 if ($self->{last_commit}) {
1199 $ed = SVN::Git::Fetcher->new($self);
1200 $last_rev = $self->{last_rev};
1201 $ed->{c} = $self->{last_commit};
1202 @parents = ($self->{last_commit});
1203 } else {
1204 $last_rev = $rev;
1205 if (my $log_entry = $self->find_parent_branch($paths, $rev)) {
1206 return $log_entry;
1207 }
1208 $ed = SVN::Git::Fetcher->new($self);
1209 }
1210 unless ($self->ra->gs_do_update($last_rev, $rev,
1211 $self->{path}, 1, $ed)) {
1212 die "SVN connection failed somewhere...\n";
1213 }
1214 $self->make_log_entry($rev, \@parents, $ed);
1215}
1216sub write_untracked {
1218 my ($self, $rev, $fh, $untracked) = @_;
1219 my $h;
1220 print $fh "r$rev\n" or croak $!;
1221 $h = $untracked->{empty};
1222 foreach (sort keys %$h) {
1223 my $act = $h->{$_} ? '+empty_dir' : '-empty_dir';
1224 print $fh " $act: ", uri_encode($_), "\n" or croak $!;
1225 warn "W: $act: $_\n";
1226 }
1227 foreach my $t (qw/dir_prop file_prop/) {
1228 $h = $untracked->{$t} or next;
1229 foreach my $path (sort keys %$h) {
1230 my $ppath = $path eq '' ? '.' : $path;
1231 foreach my $prop (sort keys %{$h->{$path}}) {
1232 next if $SKIP_PROP{$prop};
1233 my $v = $h->{$path}->{$prop};
1234 if (defined $v) {
1235 print $fh " +$t: ",
1236 uri_encode($ppath), ' ',
1237 uri_encode($prop), ' ',
1238 uri_encode($v), "\n"
1239 or croak $!;
1240 } else {
1241 print $fh " -$t: ",
1242 uri_encode($ppath), ' ',
1243 uri_encode($prop), "\n"
1244 or croak $!;
1245 }
1246 }
1247 }
1248 }
1249 foreach my $t (qw/absent_file absent_directory/) {
1250 $h = $untracked->{$t} or next;
1251 foreach my $parent (sort keys %$h) {
1252 foreach my $path (sort @{$h->{$parent}}) {
1253 print $fh " $t: ",
1254 uri_encode("$parent/$path"), "\n"
1255 or croak $!;
1256 warn "W: $t: $parent/$path ",
1257 "Insufficient permissions?\n";
1258 }
1259 }
1260 }
1261}
1262sub parse_svn_date {
1264 my $date = shift || return '+0000 1970-01-01 00:00:00';
1265 my ($Y,$m,$d,$H,$M,$S) = ($date =~ /^(\d{4})\-(\d\d)\-(\d\d)T
1266 (\d\d)\:(\d\d)\:(\d\d).\d+Z$/x) or
1267 croak "Unable to parse date: $date\n";
1268 "+0000 $Y-$m-$d $H:$M:$S";
1269}
1270sub check_author {
1272 my ($author) = @_;
1273 if (!defined $author || length $author == 0) {
1274 $author = '(no author)';
1275 }
1276 if (defined $::_authors && ! defined $::users{$author}) {
1277 die "Author: $author not defined in $::_authors file\n";
1278 }
1279 $author;
1280}
1281sub make_log_entry {
1283 my ($self, $rev, $parents, $untracked) = @_;
1284 my $rp = $self->ra->rev_proplist($rev);
1285 my %log_entry = ( parents => $parents || [], revision => $rev,
1286 revprops => $rp, log => '');
1287 open my $un, '>>', "$self->{dir}/unhandled.log" or croak $!;
1288 $self->write_untracked($rev, $un, $untracked);
1289 foreach (sort keys %$rp) {
1290 my $v = $rp->{$_};
1291 if (/^svn:(author|date|log)$/) {
1292 $log_entry{$1} = $v;
1293 } else {
1294 print $un " rev_prop: ", uri_encode($_), ' ',
1295 uri_encode($v), "\n";
1296 }
1297 }
1298 close $un or croak $!;
1299 $log_entry{date} = parse_svn_date($log_entry{date});
1300 $log_entry{author} = check_author($log_entry{author});
1301 $log_entry{log} .= "\n";
1302 \%log_entry;
1303}
1304sub fetch {
1306 my ($self, @parents) = @_;
1307 my ($last_rev, $last_commit) = $self->last_rev_commit;
1308 my ($base, $head) = $self->parse_revision($last_rev);
1309 return if ($base > $head);
1310 if (defined $last_commit) {
1311 $self->assert_index_clean($last_commit);
1312 }
1313 my $inc = 1000;
1314 my ($min, $max) = ($base, $head < $base + $inc ? $head : $base + $inc);
1315 my $err_handler = $SVN::Error::handler;
1316 $SVN::Error::handler = \&skip_unknown_revs;
1317 while (1) {
1318 my @revs;
1319 $self->ra->get_log([$self->{path}], $min, $max, 0, 1, 1, sub {
1320 my ($paths, $rev, $author, $date, $log) = @_;
1321 push @revs, [ $paths, $rev ] });
1322 foreach (@revs) {
1323 my $log_entry = $self->do_fetch(@$_);
1324 $self->do_git_commit($log_entry, @parents);
1325 }
1326 last if $max >= $head;
1327 $min = $max + 1;
1328 $max += $inc;
1329 $max = $head if ($max > $head);
1330 }
1331 $SVN::Error::handler = $err_handler;
1332}
1333sub set_tree_cb {
1335 my ($self, $log_entry, $tree, $rev, $date, $author) = @_;
1336 # TODO: enable and test optimized commits:
1337 if (0 && $rev == ($self->{last_rev} + 1)) {
1338 $log_entry->{revision} = $rev;
1339 $log_entry->{author} = $author;
1340 $self->do_git_commit($log_entry, "$rev=$tree");
1341 } else {
1342 $self->fetch("$rev=$tree");
1343 }
1344}
1345sub set_tree {
1347 my ($self, $tree) = (shift, shift);
1348 my $log_entry = ::get_commit_entry($tree);
1349 unless ($self->{last_rev}) {
1350 fatal("Must have an existing revision to commit\n");
1351 }
1352 my $pool = SVN::Pool->new;
1353 my $ed = SVN::Git::Editor->new({ r => $self->{last_rev},
1354 ra => $self->ra->dup,
1355 svn_path => $self->ra->{svn_path}
1356 },
1357 $self->ra->get_commit_editor(
1358 $log_entry->{log}, sub {
1359 $self->set_tree_cb($log_entry,
1360 $tree, @_);
1361 }),
1362 $pool);
1363 my $mods = $ed->apply_diff($self->{last_commit}, $tree);
1364 if (@$mods == 0) {
1365 print "No changes\nr$self->{last_rev} = $tree\n";
1366 }
1367 $pool->clear;
1368}
1369sub skip_unknown_revs {
1371 my ($err) = @_;
1372 my $errno = $err->apr_err();
1373 # Maybe the branch we're tracking didn't
1374 # exist when the repo started, so it's
1375 # not an error if it doesn't, just continue
1376 #
1377 # Wonderfully consistent library, eh?
1378 # 160013 - svn:// and file://
1379 # 175002 - http(s)://
1380 # 175007 - http(s):// (this repo required authorization, too...)
1381 # More codes may be discovered later...
1382 if ($errno == 175007 || $errno == 175002 || $errno == 160013) {
1383 return;
1384 }
1385 croak "Error from SVN, ($errno): ", $err->expanded_message,"\n";
1386}
1387# rev_db:
1389# Tie::File seems to be prone to offset errors if revisions get sparse,
1390# it's not that fast, either. Tie::File is also not in Perl 5.6. So
1391# one of my favorite modules is out :< Next up would be one of the DBM
1392# modules, but I'm not sure which is most portable... So I'll just
1393# go with something that's plain-text, but still capable of
1394# being randomly accessed. So here's my ultra-simple fixed-width
1395# database. All records are 40 characters + "\n", so it's easy to seek
1396# to a revision: (41 * rev) is the byte offset.
1397# A record of 40 0s denotes an empty revision.
1398# And yes, it's still pretty fast (faster than Tie::File).
1399sub rev_db_set {
1401 my ($self, $rev, $commit) = @_;
1402 length $commit == 40 or croak "arg3 must be a full SHA1 hexsum\n";
1403 open my $fh, '+<', $self->{db_path} or croak $!;
1404 my $offset = $rev * 41;
1405 # assume that append is the common case:
1406 seek $fh, 0, 2 or croak $!;
1407 my $pos = tell $fh;
1408 if ($pos < $offset) {
1409 print $fh (('0' x 40),"\n") x (($offset - $pos) / 41)
1410 or croak $!;
1411 }
1412 seek $fh, $offset, 0 or croak $!;
1413 print $fh $commit,"\n" or croak $!;
1414 close $fh or croak $!;
1415}
1416sub rev_db_get {
1418 my ($self, $rev) = @_;
1419 my $ret;
1420 my $offset = $rev * 41;
1421 open my $fh, '<', $self->{db_path} or croak $!;
1422 if (seek $fh, $offset, 0) {
1423 $ret = readline $fh;
1424 if (defined $ret) {
1425 chomp $ret;
1426 $ret = undef if ($ret =~ /^0{40}$/);
1427 }
1428 }
1429 close $fh or croak $!;
1430 $ret;
1431}
1432sub find_rev_before {
1434 my ($self, $rev, $eq_ok) = @_;
1435 --$rev unless $eq_ok;
1436 while ($rev > 0) {
1437 if (my $c = $self->rev_db_get($rev)) {
1438 return ($rev, $c);
1439 }
1440 --$rev;
1441 }
1442 return (undef, undef);
1443}
1444sub _new {
1446 my ($class, $repo_id, $ref_id, $path) = @_;
1447 unless (defined $repo_id && length $repo_id) {
1448 $repo_id = $Git::SVN::default_repo_id;
1449 }
1450 unless (defined $ref_id && length $ref_id) {
1451 $_[2] = $ref_id = $Git::SVN::default_ref_id;
1452 }
1453 $_[1] = $repo_id = sanitize_remote_name($repo_id);
1454 my $dir = "$ENV{GIT_DIR}/svn/$ref_id";
1455 $_[3] = $path = '' unless (defined $path);
1456 mkpath([$dir]);
1457 unless (-f "$dir/.rev_db") {
1458 open my $fh, '>>', "$dir/.rev_db" or croak $!;
1459 close $fh or croak $!;
1460 }
1461 bless { ref_id => $ref_id, dir => $dir, index => "$dir/index",
1462 path => $path,
1463 db_path => "$dir/.rev_db", repo_id => $repo_id }, $class;
1464}
1465sub uri_encode {
1467 my ($f) = @_;
1468 $f =~ s#([^a-zA-Z0-9\*!\:_\./\-])#uc sprintf("%%%02x",ord($1))#eg;
1469 $f
1470}
1471package Git::SVN::Prompt;
1473use strict;
1474use warnings;
1475require SVN::Core;
1476use vars qw/$_no_auth_cache $_username/;
1477sub simple {
1479 my ($cred, $realm, $default_username, $may_save, $pool) = @_;
1480 $may_save = undef if $_no_auth_cache;
1481 $default_username = $_username if defined $_username;
1482 if (defined $default_username && length $default_username) {
1483 if (defined $realm && length $realm) {
1484 print STDERR "Authentication realm: $realm\n";
1485 STDERR->flush;
1486 }
1487 $cred->username($default_username);
1488 } else {
1489 username($cred, $realm, $may_save, $pool);
1490 }
1491 $cred->password(_read_password("Password for '" .
1492 $cred->username . "': ", $realm));
1493 $cred->may_save($may_save);
1494 $SVN::_Core::SVN_NO_ERROR;
1495}
1496sub ssl_server_trust {
1498 my ($cred, $realm, $failures, $cert_info, $may_save, $pool) = @_;
1499 $may_save = undef if $_no_auth_cache;
1500 print STDERR "Error validating server certificate for '$realm':\n";
1501 if ($failures & $SVN::Auth::SSL::UNKNOWNCA) {
1502 print STDERR " - The certificate is not issued by a trusted ",
1503 "authority. Use the\n",
1504 " fingerprint to validate the certificate manually!\n";
1505 }
1506 if ($failures & $SVN::Auth::SSL::CNMISMATCH) {
1507 print STDERR " - The certificate hostname does not match.\n";
1508 }
1509 if ($failures & $SVN::Auth::SSL::NOTYETVALID) {
1510 print STDERR " - The certificate is not yet valid.\n";
1511 }
1512 if ($failures & $SVN::Auth::SSL::EXPIRED) {
1513 print STDERR " - The certificate has expired.\n";
1514 }
1515 if ($failures & $SVN::Auth::SSL::OTHER) {
1516 print STDERR " - The certificate has an unknown error.\n";
1517 }
1518 printf STDERR
1519 "Certificate information:\n".
1520 " - Hostname: %s\n".
1521 " - Valid: from %s until %s\n".
1522 " - Issuer: %s\n".
1523 " - Fingerprint: %s\n",
1524 map $cert_info->$_, qw(hostname valid_from valid_until
1525 issuer_dname fingerprint);
1526 my $choice;
1527prompt:
1528 print STDERR $may_save ?
1529 "(R)eject, accept (t)emporarily or accept (p)ermanently? " :
1530 "(R)eject or accept (t)emporarily? ";
1531 STDERR->flush;
1532 $choice = lc(substr(<STDIN> || 'R', 0, 1));
1533 if ($choice =~ /^t$/i) {
1534 $cred->may_save(undef);
1535 } elsif ($choice =~ /^r$/i) {
1536 return -1;
1537 } elsif ($may_save && $choice =~ /^p$/i) {
1538 $cred->may_save($may_save);
1539 } else {
1540 goto prompt;
1541 }
1542 $cred->accepted_failures($failures);
1543 $SVN::_Core::SVN_NO_ERROR;
1544}
1545sub ssl_client_cert {
1547 my ($cred, $realm, $may_save, $pool) = @_;
1548 $may_save = undef if $_no_auth_cache;
1549 print STDERR "Client certificate filename: ";
1550 STDERR->flush;
1551 chomp(my $filename = <STDIN>);
1552 $cred->cert_file($filename);
1553 $cred->may_save($may_save);
1554 $SVN::_Core::SVN_NO_ERROR;
1555}
1556sub ssl_client_cert_pw {
1558 my ($cred, $realm, $may_save, $pool) = @_;
1559 $may_save = undef if $_no_auth_cache;
1560 $cred->password(_read_password("Password: ", $realm));
1561 $cred->may_save($may_save);
1562 $SVN::_Core::SVN_NO_ERROR;
1563}
1564sub username {
1566 my ($cred, $realm, $may_save, $pool) = @_;
1567 $may_save = undef if $_no_auth_cache;
1568 if (defined $realm && length $realm) {
1569 print STDERR "Authentication realm: $realm\n";
1570 }
1571 my $username;
1572 if (defined $_username) {
1573 $username = $_username;
1574 } else {
1575 print STDERR "Username: ";
1576 STDERR->flush;
1577 chomp($username = <STDIN>);
1578 }
1579 $cred->username($username);
1580 $cred->may_save($may_save);
1581 $SVN::_Core::SVN_NO_ERROR;
1582}
1583sub _read_password {
1585 my ($prompt, $realm) = @_;
1586 print STDERR $prompt;
1587 STDERR->flush;
1588 require Term::ReadKey;
1589 Term::ReadKey::ReadMode('noecho');
1590 my $password = '';
1591 while (defined(my $key = Term::ReadKey::ReadKey(0))) {
1592 last if $key =~ /[\012\015]/; # \n\r
1593 $password .= $key;
1594 }
1595 Term::ReadKey::ReadMode('restore');
1596 print STDERR "\n";
1597 STDERR->flush;
1598 $password;
1599}
1600package main;
1602sub uri_encode {
1604 my ($f) = @_;
1605 $f =~ s#([^a-zA-Z0-9\*!\:_\./\-])#uc sprintf("%%%02x",ord($1))#eg;
1606 $f
1607}
1608sub uri_decode {
1610 my ($f) = @_;
1611 $f =~ tr/+/ /;
1612 $f =~ s/%([A-F0-9]{2})/chr hex($1)/ge;
1613 $f
1614}
1615{
1617 my $kill_stupid_warnings = $SVN::Node::none.$SVN::Node::file.
1618 $SVN::Node::dir.$SVN::Node::unknown.
1619 $SVN::Node::none.$SVN::Node::file.
1620 $SVN::Node::dir.$SVN::Node::unknown.
1621 $SVN::Auth::SSL::CNMISMATCH.
1622 $SVN::Auth::SSL::NOTYETVALID.
1623 $SVN::Auth::SSL::EXPIRED.
1624 $SVN::Auth::SSL::UNKNOWNCA.
1625 $SVN::Auth::SSL::OTHER;
1626}
1627package SVN::Git::Fetcher;
1629use vars qw/@ISA/;
1630use strict;
1631use warnings;
1632use Carp qw/croak/;
1633use IO::File qw//;
1634# file baton members: path, mode_a, mode_b, pool, fh, blob, base
1636sub new {
1637 my ($class, $git_svn) = @_;
1638 my $self = SVN::Delta::Editor->new;
1639 bless $self, $class;
1640 $self->{c} = $git_svn->{last_commit} if exists $git_svn->{last_commit};
1641 $self->{empty} = {};
1642 $self->{dir_prop} = {};
1643 $self->{file_prop} = {};
1644 $self->{absent_dir} = {};
1645 $self->{absent_file} = {};
1646 ($self->{gui}, $self->{ctx}) = $git_svn->tmp_index_do(
1647 sub { command_input_pipe(qw/update-index -z --index-info/) } );
1648 require Digest::MD5;
1649 $self;
1650}
1651sub set_path_strip {
1653 my ($self, $path) = @_;
1654 $self->{path_strip} = qr/^\Q$path\E\/?/;
1655}
1656sub open_root {
1658 { path => '' };
1659}
1660sub open_directory {
1662 my ($self, $path, $pb, $rev) = @_;
1663 { path => $path };
1664}
1665sub git_path {
1667 my ($self, $path) = @_;
1668 $path =~ s!$self->{path_strip}!! if $self->{path_strip};
1669 $path;
1670}
1671sub delete_entry {
1673 my ($self, $path, $rev, $pb) = @_;
1674 my $gui = $self->{gui};
1675 my $gpath = $self->git_path($path);
1677 # remove entire directories.
1678 if (command('ls-tree', $self->{c}, '--', $gpath) =~ /^040000 tree/) {
1679 my ($ls, $ctx) = command_output_pipe(qw/ls-tree
1680 -r --name-only -z/,
1681 $self->{c}, '--', $gpath);
1682 local $/ = "\0";
1683 while (<$ls>) {
1684 print $gui '0 ',0 x 40,"\t",$_ or croak $!;
1685 print "\tD\t$_\n" unless $self->{q};
1686 }
1687 print "\tD\t$gpath/\n" unless $self->{q};
1688 command_close_pipe($ls, $ctx);
1689 $self->{empty}->{$path} = 0
1690 } else {
1691 print $gui '0 ',0 x 40,"\t",$gpath,"\0" or croak $!;
1692 print "\tD\t$gpath\n" unless $self->{q};
1693 }
1694 undef;
1695}
1696sub open_file {
1698 my ($self, $path, $pb, $rev) = @_;
1699 my $gpath = $self->git_path($path);
1700 my ($mode, $blob) = (command('ls-tree', $self->{c}, '--', $gpath)
1701 =~ /^(\d{6}) blob ([a-f\d]{40})\t/);
1702 unless (defined $mode && defined $blob) {
1703 die "$path was not found in commit $self->{c} (r$rev)\n";
1704 }
1705 { path => $path, mode_a => $mode, mode_b => $mode, blob => $blob,
1706 pool => SVN::Pool->new, action => 'M' };
1707}
1708sub add_file {
1710 my ($self, $path, $pb, $cp_path, $cp_rev) = @_;
1711 my ($dir, $file) = ($path =~ m#^(.*?)/?([^/]+)$#);
1712 delete $self->{empty}->{$dir};
1713 { path => $path, mode_a => 100644, mode_b => 100644,
1714 pool => SVN::Pool->new, action => 'A' };
1715}
1716sub add_directory {
1718 my ($self, $path, $cp_path, $cp_rev) = @_;
1719 my ($dir, $file) = ($path =~ m#^(.*?)/?([^/]+)$#);
1720 delete $self->{empty}->{$dir};
1721 $self->{empty}->{$path} = 1;
1722 { path => $path };
1723}
1724sub change_dir_prop {
1726 my ($self, $db, $prop, $value) = @_;
1727 $self->{dir_prop}->{$db->{path}} ||= {};
1728 $self->{dir_prop}->{$db->{path}}->{$prop} = $value;
1729 undef;
1730}
1731sub absent_directory {
1733 my ($self, $path, $pb) = @_;
1734 $self->{absent_dir}->{$pb->{path}} ||= [];
1735 push @{$self->{absent_dir}->{$pb->{path}}}, $path;
1736 undef;
1737}
1738sub absent_file {
1740 my ($self, $path, $pb) = @_;
1741 $self->{absent_file}->{$pb->{path}} ||= [];
1742 push @{$self->{absent_file}->{$pb->{path}}}, $path;
1743 undef;
1744}
1745sub change_file_prop {
1747 my ($self, $fb, $prop, $value) = @_;
1748 if ($prop eq 'svn:executable') {
1749 if ($fb->{mode_b} != 120000) {
1750 $fb->{mode_b} = defined $value ? 100755 : 100644;
1751 }
1752 } elsif ($prop eq 'svn:special') {
1753 $fb->{mode_b} = defined $value ? 120000 : 100644;
1754 } else {
1755 $self->{file_prop}->{$fb->{path}} ||= {};
1756 $self->{file_prop}->{$fb->{path}}->{$prop} = $value;
1757 }
1758 undef;
1759}
1760sub apply_textdelta {
1762 my ($self, $fb, $exp) = @_;
1763 my $fh = IO::File->new_tmpfile;
1764 $fh->autoflush(1);
1765 # $fh gets auto-closed() by SVN::TxDelta::apply(),
1766 # (but $base does not,) so dup() it for reading in close_file
1767 open my $dup, '<&', $fh or croak $!;
1768 my $base = IO::File->new_tmpfile;
1769 $base->autoflush(1);
1770 if ($fb->{blob}) {
1771 defined (my $pid = fork) or croak $!;
1772 if (!$pid) {
1773 open STDOUT, '>&', $base or croak $!;
1774 print STDOUT 'link ' if ($fb->{mode_a} == 120000);
1775 exec qw/git-cat-file blob/, $fb->{blob} or croak $!;
1776 }
1777 waitpid $pid, 0;
1778 croak $? if $?;
1779 if (defined $exp) {
1781 seek $base, 0, 0 or croak $!;
1782 my $md5 = Digest::MD5->new;
1783 $md5->addfile($base);
1784 my $got = $md5->hexdigest;
1785 die "Checksum mismatch: $fb->{path} $fb->{blob}\n",
1786 "expected: $exp\n",
1787 " got: $got\n" if ($got ne $exp);
1788 }
1789 }
1790 seek $base, 0, 0 or croak $!;
1791 $fb->{fh} = $dup;
1792 $fb->{base} = $base;
1793 [ SVN::TxDelta::apply($base, $fh, undef, $fb->{path}, $fb->{pool}) ];
1794}
1795sub close_file {
1797 my ($self, $fb, $exp) = @_;
1798 my $hash;
1799 my $path = $self->git_path($fb->{path});
1800 if (my $fh = $fb->{fh}) {
1801 seek($fh, 0, 0) or croak $!;
1802 my $md5 = Digest::MD5->new;
1803 $md5->addfile($fh);
1804 my $got = $md5->hexdigest;
1805 die "Checksum mismatch: $path\n",
1806 "expected: $exp\n got: $got\n" if ($got ne $exp);
1807 seek($fh, 0, 0) or croak $!;
1808 if ($fb->{mode_b} == 120000) {
1809 read($fh, my $buf, 5) == 5 or croak $!;
1810 $buf eq 'link ' or die "$path has mode 120000",
1811 "but is not a link\n";
1812 }
1813 defined(my $pid = open my $out,'-|') or die "Can't fork: $!\n";
1814 if (!$pid) {
1815 open STDIN, '<&', $fh or croak $!;
1816 exec qw/git-hash-object -w --stdin/ or croak $!;
1817 }
1818 chomp($hash = do { local $/; <$out> });
1819 close $out or croak $!;
1820 close $fh or croak $!;
1821 $hash =~ /^[a-f\d]{40}$/ or die "not a sha1: $hash\n";
1822 close $fb->{base} or croak $!;
1823 } else {
1824 $hash = $fb->{blob} or die "no blob information\n";
1825 }
1826 $fb->{pool}->clear;
1827 my $gui = $self->{gui};
1828 print $gui "$fb->{mode_b} $hash\t$path\0" or croak $!;
1829 print "\t$fb->{action}\t$path\n" if $fb->{action} && ! $self->{q};
1830 undef;
1831}
1832sub abort_edit {
1834 my $self = shift;
1835 eval { command_close_pipe($self->{gui}, $self->{ctx}) };
1836 $self->SUPER::abort_edit(@_);
1837}
1838sub close_edit {
1840 my $self = shift;
1841 command_close_pipe($self->{gui}, $self->{ctx});
1842 $self->{git_commit_ok} = 1;
1843 $self->SUPER::close_edit(@_);
1844}
1845package SVN::Git::Editor;
1847use vars qw/@ISA/;
1848use strict;
1849use warnings;
1850use Carp qw/croak/;
1851use IO::File;
1852sub new {
1854 my $class = shift;
1855 my $git_svn = shift;
1856 my $self = SVN::Delta::Editor->new(@_);
1857 bless $self, $class;
1858 foreach (qw/svn_path r ra/) {
1859 die "$_ required!\n" unless (defined $git_svn->{$_});
1860 $self->{$_} = $git_svn->{$_};
1861 }
1862 $self->{pool} = SVN::Pool->new;
1863 $self->{bat} = { '' => $self->open_root($self->{r}, $self->{pool}) };
1864 $self->{rm} = { };
1865 require Digest::MD5;
1866 return $self;
1867}
1868sub split_path {
1870 return ($_[0] =~ m#^(.*?)/?([^/]+)$#);
1871}
1872sub repo_path {
1874 (defined $_[1] && length $_[1]) ? $_[1] : ''
1875}
1876sub url_path {
1878 my ($self, $path) = @_;
1879 $self->{ra}->{url} . '/' . $self->repo_path($path);
1880}
1881sub rmdirs {
1883 my ($self, $tree_b) = @_;
1884 my $rm = $self->{rm};
1885 delete $rm->{''}; # we never delete the url we're tracking
1886 return unless %$rm;
1887 foreach (keys %$rm) {
1889 my @d = split m#/#, $_;
1890 my $c = shift @d;
1891 $rm->{$c} = 1;
1892 while (@d) {
1893 $c .= '/' . shift @d;
1894 $rm->{$c} = 1;
1895 }
1896 }
1897 delete $rm->{$self->{svn_path}};
1898 delete $rm->{''}; # we never delete the url we're tracking
1899 return unless %$rm;
1900 my ($fh, $ctx) = command_output_pipe(
1902 qw/ls-tree --name-only -r -z/, $tree_b);
1903 local $/ = "\0";
1904 while (<$fh>) {
1905 chomp;
1906 my @dn = split m#/#, $_;
1907 while (pop @dn) {
1908 delete $rm->{join '/', @dn};
1909 }
1910 unless (%$rm) {
1911 close $fh;
1912 return;
1913 }
1914 }
1915 command_close_pipe($fh, $ctx);
1916 my ($r, $p, $bat) = ($self->{r}, $self->{pool}, $self->{bat});
1918 foreach my $d (sort { $b =~ tr#/#/# <=> $a =~ tr#/#/# } keys %$rm) {
1919 $self->close_directory($bat->{$d}, $p);
1920 my ($dn) = ($d =~ m#^(.*?)/?(?:[^/]+)$#);
1921 print "\tD+\t$d/\n" unless $::_q;
1922 $self->SUPER::delete_entry($d, $r, $bat->{$dn}, $p);
1923 delete $bat->{$d};
1924 }
1925}
1926sub open_or_add_dir {
1928 my ($self, $full_path, $baton) = @_;
1929 my $t = $self->{ra}->check_path($full_path, $self->{r});
1930 if ($t == $SVN::Node::none) {
1931 return $self->add_directory($full_path, $baton,
1932 undef, -1, $self->{pool});
1933 } elsif ($t == $SVN::Node::dir) {
1934 return $self->open_directory($full_path, $baton,
1935 $self->{r}, $self->{pool});
1936 }
1937 print STDERR "$full_path already exists in repository at ",
1938 "r$self->{r} and it is not a directory (",
1939 ($t == $SVN::Node::file ? 'file' : 'unknown'),"/$t)\n";
1940 exit 1;
1941}
1942sub ensure_path {
1944 my ($self, $path) = @_;
1945 my $bat = $self->{bat};
1946 $path = $self->repo_path($path);
1947 return $bat->{''} unless (length $path);
1948 my @p = split m#/+#, $path;
1949 my $c = shift @p;
1950 $bat->{$c} ||= $self->open_or_add_dir($c, $bat->{''});
1951 while (@p) {
1952 my $c0 = $c;
1953 $c .= '/' . shift @p;
1954 $bat->{$c} ||= $self->open_or_add_dir($c, $bat->{$c0});
1955 }
1956 return $bat->{$c};
1957}
1958sub A {
1960 my ($self, $m) = @_;
1961 my ($dir, $file) = split_path($m->{file_b});
1962 my $pbat = $self->ensure_path($dir);
1963 my $fbat = $self->add_file($self->repo_path($m->{file_b}), $pbat,
1964 undef, -1);
1965 print "\tA\t$m->{file_b}\n" unless $::_q;
1966 $self->chg_file($fbat, $m);
1967 $self->close_file($fbat,undef,$self->{pool});
1968}
1969sub C {
1971 my ($self, $m) = @_;
1972 my ($dir, $file) = split_path($m->{file_b});
1973 my $pbat = $self->ensure_path($dir);
1974 my $fbat = $self->add_file($self->repo_path($m->{file_b}), $pbat,
1975 $self->url_path($m->{file_a}), $self->{r});
1976 print "\tC\t$m->{file_a} => $m->{file_b}\n" unless $::_q;
1977 $self->chg_file($fbat, $m);
1978 $self->close_file($fbat,undef,$self->{pool});
1979}
1980sub delete_entry {
1982 my ($self, $path, $pbat) = @_;
1983 my $rpath = $self->repo_path($path);
1984 my ($dir, $file) = split_path($rpath);
1985 $self->{rm}->{$dir} = 1;
1986 $self->SUPER::delete_entry($rpath, $self->{r}, $pbat, $self->{pool});
1987}
1988sub R {
1990 my ($self, $m) = @_;
1991 my ($dir, $file) = split_path($m->{file_b});
1992 my $pbat = $self->ensure_path($dir);
1993 my $fbat = $self->add_file($self->repo_path($m->{file_b}), $pbat,
1994 $self->url_path($m->{file_a}), $self->{r});
1995 print "\tR\t$m->{file_a} => $m->{file_b}\n" unless $::_q;
1996 $self->chg_file($fbat, $m);
1997 $self->close_file($fbat,undef,$self->{pool});
1998 ($dir, $file) = split_path($m->{file_a});
2000 $pbat = $self->ensure_path($dir);
2001 $self->delete_entry($m->{file_a}, $pbat);
2002}
2003sub M {
2005 my ($self, $m) = @_;
2006 my ($dir, $file) = split_path($m->{file_b});
2007 my $pbat = $self->ensure_path($dir);
2008 my $fbat = $self->open_file($self->repo_path($m->{file_b}),
2009 $pbat,$self->{r},$self->{pool});
2010 print "\t$m->{chg}\t$m->{file_b}\n" unless $::_q;
2011 $self->chg_file($fbat, $m);
2012 $self->close_file($fbat,undef,$self->{pool});
2013}
2014sub T { shift->M(@_) }
2016sub change_file_prop {
2018 my ($self, $fbat, $pname, $pval) = @_;
2019 $self->SUPER::change_file_prop($fbat, $pname, $pval, $self->{pool});
2020}
2021sub chg_file {
2023 my ($self, $fbat, $m) = @_;
2024 if ($m->{mode_b} =~ /755$/ && $m->{mode_a} !~ /755$/) {
2025 $self->change_file_prop($fbat,'svn:executable','*');
2026 } elsif ($m->{mode_b} !~ /755$/ && $m->{mode_a} =~ /755$/) {
2027 $self->change_file_prop($fbat,'svn:executable',undef);
2028 }
2029 my $fh = IO::File->new_tmpfile or croak $!;
2030 if ($m->{mode_b} =~ /^120/) {
2031 print $fh 'link ' or croak $!;
2032 $self->change_file_prop($fbat,'svn:special','*');
2033 } elsif ($m->{mode_a} =~ /^120/ && $m->{mode_b} !~ /^120/) {
2034 $self->change_file_prop($fbat,'svn:special',undef);
2035 }
2036 defined(my $pid = fork) or croak $!;
2037 if (!$pid) {
2038 open STDOUT, '>&', $fh or croak $!;
2039 exec qw/git-cat-file blob/, $m->{sha1_b} or croak $!;
2040 }
2041 waitpid $pid, 0;
2042 croak $? if $?;
2043 $fh->flush == 0 or croak $!;
2044 seek $fh, 0, 0 or croak $!;
2045 my $md5 = Digest::MD5->new;
2047 $md5->addfile($fh) or croak $!;
2048 seek $fh, 0, 0 or croak $!;
2049 my $exp = $md5->hexdigest;
2051 my $pool = SVN::Pool->new;
2052 my $atd = $self->apply_textdelta($fbat, undef, $pool);
2053 my $got = SVN::TxDelta::send_stream($fh, @$atd, $pool);
2054 die "Checksum mismatch\nexpected: $exp\ngot: $got\n" if ($got ne $exp);
2055 $pool->clear;
2056 close $fh or croak $!;
2058}
2059sub D {
2061 my ($self, $m) = @_;
2062 my ($dir, $file) = split_path($m->{file_b});
2063 my $pbat = $self->ensure_path($dir);
2064 print "\tD\t$m->{file_b}\n" unless $::_q;
2065 $self->delete_entry($m->{file_b}, $pbat);
2066}
2067sub close_edit {
2069 my ($self) = @_;
2070 my ($p,$bat) = ($self->{pool}, $self->{bat});
2071 foreach (sort { $b =~ tr#/#/# <=> $a =~ tr#/#/# } keys %$bat) {
2072 $self->close_directory($bat->{$_}, $p);
2073 }
2074 $self->SUPER::close_edit($p);
2075 $p->clear;
2076}
2077sub abort_edit {
2079 my ($self) = @_;
2080 $self->SUPER::abort_edit($self->{pool});
2081 $self->{pool}->clear;
2082}
2083# this drives the editor
2085sub apply_diff {
2086 my ($self, $tree_a, $tree_b) = @_;
2087 my @diff_tree = qw(diff-tree -z -r);
2088 if ($::_cp_similarity) {
2089 push @diff_tree, "-C$::_cp_similarity";
2090 } else {
2091 push @diff_tree, '-C';
2092 }
2093 push @diff_tree, '--find-copies-harder' if $::_find_copies_harder;
2094 push @diff_tree, "-l$::_l" if defined $::_l;
2095 push @diff_tree, $tree_a, $tree_b;
2096 my ($diff_fh, $ctx) = command_output_pipe(@diff_tree);
2097 my $nl = $/;
2098 local $/ = "\0";
2099 my $state = 'meta';
2100 my @mods;
2101 while (<$diff_fh>) {
2102 chomp $_; # this gets rid of the trailing "\0"
2103 if ($state eq 'meta' && /^:(\d{6})\s(\d{6})\s
2104 $::sha1\s($::sha1)\s
2105 ([MTCRAD])\d*$/xo) {
2106 push @mods, { mode_a => $1, mode_b => $2,
2107 sha1_b => $3, chg => $4 };
2108 if ($4 =~ /^(?:C|R)$/) {
2109 $state = 'file_a';
2110 } else {
2111 $state = 'file_b';
2112 }
2113 } elsif ($state eq 'file_a') {
2114 my $x = $mods[$#mods] or croak "Empty array\n";
2115 if ($x->{chg} !~ /^(?:C|R)$/) {
2116 croak "Error parsing $_, $x->{chg}\n";
2117 }
2118 $x->{file_a} = $_;
2119 $state = 'file_b';
2120 } elsif ($state eq 'file_b') {
2121 my $x = $mods[$#mods] or croak "Empty array\n";
2122 if (exists $x->{file_a} && $x->{chg} !~ /^(?:C|R)$/) {
2123 croak "Error parsing $_, $x->{chg}\n";
2124 }
2125 if (!exists $x->{file_a} && $x->{chg} =~ /^(?:C|R)$/) {
2126 croak "Error parsing $_, $x->{chg}\n";
2127 }
2128 $x->{file_b} = $_;
2129 $state = 'meta';
2130 } else {
2131 croak "Error parsing $_\n";
2132 }
2133 }
2134 command_close_pipe($diff_fh, $ctx);
2135 $/ = $nl;
2136 my %o = ( D => 1, R => 0, C => -1, A => 3, M => 3, T => 3 );
2138 foreach my $m (sort { $o{$a->{chg}} <=> $o{$b->{chg}} } @mods) {
2139 my $f = $m->{chg};
2140 if (defined $o{$f}) {
2141 $self->$f($m);
2142 } else {
2143 fatal("Invalid change type: $f\n");
2144 }
2145 }
2146 $self->rmdirs($tree_b) if $::_rmdir;
2147 if (@mods == 0) {
2148 $self->abort_edit;
2149 } else {
2150 $self->close_edit;
2151 }
2152 \@mods;
2153}
2154package Git::SVN::Ra;
2156use vars qw/@ISA $config_dir/;
2157use strict;
2158use warnings;
2159my ($can_do_switch);
2160my %RA;
2161BEGIN {
2163 # enforce temporary pool usage for some simple functions
2164 my $e;
2165 foreach (qw/get_latest_revnum rev_proplist get_file
2166 check_path get_dir get_uuid get_repos_root/) {
2167 $e .= "sub $_ {
2168 my \$self = shift;
2169 my \$pool = SVN::Pool->new;
2170 my \@ret = \$self->SUPER::$_(\@_,\$pool);
2171 \$pool->clear;
2172 wantarray ? \@ret : \$ret[0]; }\n";
2173 }
2174 eval $e;
2175}
2176sub new {
2178 my ($class, $url) = @_;
2179 $url =~ s!/+$!!;
2180 return $RA{$url} if $RA{$url};
2181 SVN::_Core::svn_config_ensure($config_dir, undef);
2183 my ($baton, $callbacks) = SVN::Core::auth_open_helper([
2184 SVN::Client::get_simple_provider(),
2185 SVN::Client::get_ssl_server_trust_file_provider(),
2186 SVN::Client::get_simple_prompt_provider(
2187 \&Git::SVN::Prompt::simple, 2),
2188 SVN::Client::get_ssl_client_cert_prompt_provider(
2189 \&Git::SVN::Prompt::ssl_client_cert, 2),
2190 SVN::Client::get_ssl_client_cert_pw_prompt_provider(
2191 \&Git::SVN::Prompt::ssl_client_cert_pw, 2),
2192 SVN::Client::get_username_provider(),
2193 SVN::Client::get_ssl_server_trust_prompt_provider(
2194 \&Git::SVN::Prompt::ssl_server_trust),
2195 SVN::Client::get_username_prompt_provider(
2196 \&Git::SVN::Prompt::username, 2),
2197 ]);
2198 my $config = SVN::Core::config_get_config($config_dir);
2199 my $self = SVN::Ra->new(url => $url, auth => $baton,
2200 config => $config,
2201 pool => SVN::Pool->new,
2202 auth_provider_callbacks => $callbacks);
2203 $self->{svn_path} = $url;
2204 $self->{repos_root} = $self->get_repos_root;
2205 $self->{svn_path} =~ s#^\Q$self->{repos_root}\E/*##;
2206 $RA{$url} = bless $self, $class;
2207}
2208sub DESTROY {
2210 # do not call the real DESTROY since we store ourselves in %RA
2211}
2212sub dup {
2214 my ($self) = @_;
2215 my $dup = SVN::Ra->new(pool => SVN::Pool->new,
2216 map { $_ => $self->{$_} } qw/config url
2217 auth auth_provider_callbacks repos_root svn_path/);
2218 bless $dup, ref $self;
2219}
2220sub get_log {
2222 my ($self, @args) = @_;
2223 my $pool = SVN::Pool->new;
2224 $args[4]-- if $args[4] && ! $::_follow_parent;
2225 splice(@args, 3, 1) if ($SVN::Core::VERSION le '1.2.0');
2226 my $ret = $self->SUPER::get_log(@args, $pool);
2227 $pool->clear;
2228 $ret;
2229}
2230sub get_commit_editor {
2232 my ($self, $log, $cb, $pool) = @_;
2233 my @lock = $SVN::Core::VERSION ge '1.2.0' ? (undef, 0) : ();
2234 $self->SUPER::get_commit_editor($log, $cb, @lock, $pool);
2235}
2236sub uuid {
2238 my ($self) = @_;
2239 $self->{uuid} ||= $self->get_uuid;
2240}
2241sub gs_do_update {
2243 my ($self, $rev_a, $rev_b, $path, $recurse, $editor) = @_;
2244 my $pool = SVN::Pool->new;
2245 $editor->set_path_strip($path);
2246 my $reporter = $self->do_update($rev_b, $path, $recurse,
2247 $editor, $pool);
2248 my @lock = $SVN::Core::VERSION ge '1.2.0' ? (undef) : ();
2249 my $new = ($rev_a == $rev_b);
2250 $reporter->set_path('', $rev_a, $new, @lock, $pool);
2251 $reporter->finish_report($pool);
2252 $pool->clear;
2253 $editor->{git_commit_ok};
2254}
2255sub gs_do_switch {
2257 my ($self, $rev_a, $rev_b, $path, $recurse, $url_b, $editor) = @_;
2258 my $pool = SVN::Pool->new;
2259 $editor->set_path_strip($path);
2260 my $reporter = $self->do_switch($rev_b, $path, $recurse,
2261 $url_b, $editor, $pool);
2262 my @lock = $SVN::Core::VERSION ge '1.2.0' ? (undef) : ();
2263 $reporter->set_path('', $rev_a, 0, @lock, $pool);
2264 $reporter->finish_report($pool);
2265 $pool->clear;
2266 $editor->{git_commit_ok};
2267}
2268sub minimize_url {
2270 my ($self) = @_;
2271 return $self->{url} if ($self->{url} eq $self->{repos_root});
2272 my $url = $self->{repos_root};
2273 my @components = split(m!/!, $self->{svn_path});
2274 my $c = '';
2275 do {
2276 $url .= "/$c" if length $c;
2277 eval { (ref $self)->new($url)->get_latest_revnum };
2278 } while ($@ && ($c = shift @components));
2279 $url;
2280}
2281sub can_do_switch {
2283 my $self = shift;
2284 unless (defined $can_do_switch) {
2285 my $pool = SVN::Pool->new;
2286 my $rep = eval {
2287 $self->do_switch(1, '', 0, $self->{url},
2288 SVN::Delta::Editor->new, $pool);
2289 };
2290 if ($@) {
2291 $can_do_switch = 0;
2292 } else {
2293 $rep->abort_report($pool);
2294 $can_do_switch = 1;
2295 }
2296 $pool->clear;
2297 }
2298 $can_do_switch;
2299}
2300package Git::SVN::Log;
2302use strict;
2303use warnings;
2304use POSIX qw/strftime/;
2305use vars qw/$TZ $limit $color $pager $non_recursive $verbose $oneline
2306 %rusers $show_commit $incremental/;
2307my $l_fmt;
2308sub cmt_showable {
2310 my ($c) = @_;
2311 return 1 if defined $c->{r};
2312 if ($c->{l} && $c->{l}->[-1] eq "...\n" &&
2313 $c->{a_raw} =~ /\@([a-f\d\-]+)>$/) {
2314 my @log = command(qw/cat-file commit/, $c->{c});
2315 shift @log while ($log[0] ne "\n");
2316 shift @log;
2317 @{$c->{l}} = grep !/^git-svn-id: /, @log;
2318 (undef, $c->{r}, undef) = ::extract_metadata(
2320 (grep(/^git-svn-id: /, @log))[-1]);
2321 }
2322 return defined $c->{r};
2323}
2324sub log_use_color {
2326 return 1 if $color;
2327 my ($dc, $dcvar);
2328 $dcvar = 'color.diff';
2329 $dc = `git-config --get $dcvar`;
2330 if ($dc eq '') {
2331 # nothing at all; fallback to "diff.color"
2332 $dcvar = 'diff.color';
2333 $dc = `git-config --get $dcvar`;
2334 }
2335 chomp($dc);
2336 if ($dc eq 'auto') {
2337 my $pc;
2338 $pc = `git-config --get color.pager`;
2339 if ($pc eq '') {
2340 # does not have it -- fallback to pager.color
2341 $pc = `git-config --bool --get pager.color`;
2342 }
2343 else {
2344 $pc = `git-config --bool --get color.pager`;
2345 if ($?) {
2346 $pc = 'false';
2347 }
2348 }
2349 chomp($pc);
2350 if (-t *STDOUT || (defined $pager && $pc eq 'true')) {
2351 return ($ENV{TERM} && $ENV{TERM} ne 'dumb');
2352 }
2353 return 0;
2354 }
2355 return 0 if $dc eq 'never';
2356 return 1 if $dc eq 'always';
2357 chomp($dc = `git-config --bool --get $dcvar`);
2358 return ($dc eq 'true');
2359}
2360sub git_svn_log_cmd {
2362 my ($r_min, $r_max) = @_;
2363 my $gs = Git::SVN->_new;
2364 my @cmd = (qw/log --abbrev-commit --pretty=raw --default/,
2365 $gs->refname);
2366 push @cmd, '-r' unless $non_recursive;
2367 push @cmd, qw/--raw --name-status/ if $verbose;
2368 push @cmd, '--color' if log_use_color();
2369 return @cmd unless defined $r_max;
2370 if ($r_max == $r_min) {
2371 push @cmd, '--max-count=1';
2372 if (my $c = $gs->rev_db_get($r_max)) {
2373 push @cmd, $c;
2374 }
2375 } else {
2376 my ($c_min, $c_max);
2377 $c_max = $gs->rev_db_get($r_max);
2378 $c_min = $gs->rev_db_get($r_min);
2379 if (defined $c_min && defined $c_max) {
2380 if ($r_max > $r_max) {
2381 push @cmd, "$c_min..$c_max";
2382 } else {
2383 push @cmd, "$c_max..$c_min";
2384 }
2385 } elsif ($r_max > $r_min) {
2386 push @cmd, $c_max;
2387 } else {
2388 push @cmd, $c_min;
2389 }
2390 }
2391 return @cmd;
2392}
2393# adapted from pager.c
2395sub config_pager {
2396 $pager ||= $ENV{GIT_PAGER} || $ENV{PAGER};
2397 if (!defined $pager) {
2398 $pager = 'less';
2399 } elsif (length $pager == 0 || $pager eq 'cat') {
2400 $pager = undef;
2401 }
2402}
2403sub run_pager {
2405 return unless -t *STDOUT;
2406 pipe my $rfd, my $wfd or return;
2407 defined(my $pid = fork) or ::fatal "Can't fork: $!\n";
2408 if (!$pid) {
2409 open STDOUT, '>&', $wfd or
2410 ::fatal "Can't redirect to stdout: $!\n";
2411 return;
2412 }
2413 open STDIN, '<&', $rfd or ::fatal "Can't redirect stdin: $!\n";
2414 $ENV{LESS} ||= 'FRSX';
2415 exec $pager or ::fatal "Can't run pager: $! ($pager)\n";
2416}
2417sub get_author_info {
2419 my ($dest, $author, $t, $tz) = @_;
2420 $author =~ s/(?:^\s*|\s*$)//g;
2421 $dest->{a_raw} = $author;
2422 my $au;
2423 if ($::_authors) {
2424 $au = $rusers{$author} || undef;
2425 }
2426 if (!$au) {
2427 ($au) = ($author =~ /<([^>]+)\@[^>]+>$/);
2428 }
2429 $dest->{t} = $t;
2430 $dest->{tz} = $tz;
2431 $dest->{a} = $au;
2432 # Date::Parse isn't in the standard Perl distro :(
2433 if ($tz =~ s/^\+//) {
2434 $t += ::tz_to_s_offset($tz);
2435 } elsif ($tz =~ s/^\-//) {
2436 $t -= ::tz_to_s_offset($tz);
2437 }
2438 $dest->{t_utc} = $t;
2439}
2440sub process_commit {
2442 my ($c, $r_min, $r_max, $defer) = @_;
2443 if (defined $r_min && defined $r_max) {
2444 if ($r_min == $c->{r} && $r_min == $r_max) {
2445 show_commit($c);
2446 return 0;
2447 }
2448 return 1 if $r_min == $r_max;
2449 if ($r_min < $r_max) {
2450 # we need to reverse the print order
2451 return 0 if (defined $limit && --$limit < 0);
2452 push @$defer, $c;
2453 return 1;
2454 }
2455 if ($r_min != $r_max) {
2456 return 1 if ($r_min < $c->{r});
2457 return 1 if ($r_max > $c->{r});
2458 }
2459 }
2460 return 0 if (defined $limit && --$limit < 0);
2461 show_commit($c);
2462 return 1;
2463}
2464sub show_commit {
2466 my $c = shift;
2467 if ($oneline) {
2468 my $x = "\n";
2469 if (my $l = $c->{l}) {
2470 while ($l->[0] =~ /^\s*$/) { shift @$l }
2471 $x = $l->[0];
2472 }
2473 $l_fmt ||= 'A' . length($c->{r});
2474 print 'r',pack($l_fmt, $c->{r}),' | ';
2475 print "$c->{c} | " if $show_commit;
2476 print $x;
2477 } else {
2478 show_commit_normal($c);
2479 }
2480}
2481sub show_commit_changed_paths {
2483 my ($c) = @_;
2484 return unless $c->{changed};
2485 print "Changed paths:\n", @{$c->{changed}};
2486}
2487sub show_commit_normal {
2489 my ($c) = @_;
2490 print '-' x72, "\nr$c->{r} | ";
2491 print "$c->{c} | " if $show_commit;
2492 print "$c->{a} | ", strftime("%Y-%m-%d %H:%M:%S %z (%a, %d %b %Y)",
2493 localtime($c->{t_utc})), ' | ';
2494 my $nr_line = 0;
2495 if (my $l = $c->{l}) {
2497 while ($l->[$#$l] eq "\n" && $#$l > 0
2498 && $l->[($#$l - 1)] eq "\n") {
2499 pop @$l;
2500 }
2501 $nr_line = scalar @$l;
2502 if (!$nr_line) {
2503 print "1 line\n\n\n";
2504 } else {
2505 if ($nr_line == 1) {
2506 $nr_line = '1 line';
2507 } else {
2508 $nr_line .= ' lines';
2509 }
2510 print $nr_line, "\n";
2511 show_commit_changed_paths($c);
2512 print "\n";
2513 print $_ foreach @$l;
2514 }
2515 } else {
2516 print "1 line\n";
2517 show_commit_changed_paths($c);
2518 print "\n";
2519 }
2521 foreach my $x (qw/raw diff/) {
2522 if ($c->{$x}) {
2523 print "\n";
2524 print $_ foreach @{$c->{$x}}
2525 }
2526 }
2527}
2528sub cmd_show_log {
2530 my (@args) = @_;
2531 my ($r_min, $r_max);
2532 my $r_last = -1; # prevent dupes
2533 if (defined $TZ) {
2534 $ENV{TZ} = $TZ;
2535 } else {
2536 delete $ENV{TZ};
2537 }
2538 if (defined $::_revision) {
2539 if ($::_revision =~ /^(\d+):(\d+)$/) {
2540 ($r_min, $r_max) = ($1, $2);
2541 } elsif ($::_revision =~ /^\d+$/) {
2542 $r_min = $r_max = $::_revision;
2543 } else {
2544 ::fatal "-r$::_revision is not supported, use ",
2545 "standard \'git log\' arguments instead\n";
2546 }
2547 }
2548 config_pager();
2550 @args = (git_svn_log_cmd($r_min, $r_max), @args);
2551 my $log = command_output_pipe(@args);
2552 run_pager();
2553 my (@k, $c, $d);
2554 my $esc_color = qr/(?:\033\[(?:(?:\d+;)*\d*)?m)*/;
2555 while (<$log>) {
2556 if (/^${esc_color}commit ($::sha1_short)/o) {
2557 my $cmt = $1;
2558 if ($c && cmt_showable($c) && $c->{r} != $r_last) {
2559 $r_last = $c->{r};
2560 process_commit($c, $r_min, $r_max, \@k) or
2561 goto out;
2562 }
2563 $d = undef;
2564 $c = { c => $cmt };
2565 } elsif (/^${esc_color}author (.+) (\d+) ([\-\+]?\d+)$/o) {
2566 get_author_info($c, $1, $2, $3);
2567 } elsif (/^${esc_color}(?:tree|parent|committer) /o) {
2568 # ignore
2569 } elsif (/^${esc_color}:\d{6} \d{6} $::sha1_short/o) {
2570 push @{$c->{raw}}, $_;
2571 } elsif (/^${esc_color}[ACRMDT]\t/) {
2572 # we could add $SVN->{svn_path} here, but that requires
2573 # remote access at the moment (repo_path_split)...
2574 s#^(${esc_color})([ACRMDT])\t#$1 $2 #o;
2575 push @{$c->{changed}}, $_;
2576 } elsif (/^${esc_color}diff /o) {
2577 $d = 1;
2578 push @{$c->{diff}}, $_;
2579 } elsif ($d) {
2580 push @{$c->{diff}}, $_;
2581 } elsif (/^${esc_color} (git-svn-id:.+)$/o) {
2582 ($c->{url}, $c->{r}, undef) = ::extract_metadata($1);
2583 } elsif (s/^${esc_color} //o) {
2584 push @{$c->{l}}, $_;
2585 }
2586 }
2587 if ($c && defined $c->{r} && $c->{r} != $r_last) {
2588 $r_last = $c->{r};
2589 process_commit($c, $r_min, $r_max, \@k);
2590 }
2591 if (@k) {
2592 my $swap = $r_max;
2593 $r_max = $r_min;
2594 $r_min = $swap;
2595 process_commit($_, $r_min, $r_max) foreach reverse @k;
2596 }
2597out:
2598 close $log;
2599 print '-' x72,"\n" unless $incremental || $oneline;
2600}
2601package Git::SVN::Migration;
2603# these version numbers do NOT correspond to actual version numbers
2604# of git nor git-svn. They are just relative.
2605#
2606# v0 layout: .git/$id/info/url, refs/heads/$id-HEAD
2607#
2608# v1 layout: .git/$id/info/url, refs/remotes/$id
2609#
2610# v2 layout: .git/svn/$id/info/url, refs/remotes/$id
2611#
2612# v3 layout: .git/svn/$id, refs/remotes/$id
2613# - info/url may remain for backwards compatibility
2614# - this is what we migrate up to this layout automatically,
2615# - this will be used by git svn init on single branches
2616#
2617# v4 layout: .git/svn/$repo_id/$id, refs/remotes/$repo_id/$id
2618# - this is only created for newly multi-init-ed
2619# repositories. Similar in spirit to the
2620# --use-separate-remotes option in git-clone (now default)
2621# - we do not automatically migrate to this (following
2622# the example set by core git)
2623use strict;
2624use warnings;
2625use Carp qw/croak/;
2626use File::Path qw/mkpath/;
2627use File::Basename qw/dirname basename/;
2628use vars qw/$_minimize/;
2629sub migrate_from_v0 {
2631 my $git_dir = $ENV{GIT_DIR};
2632 return undef unless -d $git_dir;
2633 my ($fh, $ctx) = command_output_pipe(qw/rev-parse --symbolic --all/);
2634 my $migrated = 0;
2635 while (<$fh>) {
2636 chomp;
2637 my ($id, $orig_ref) = ($_, $_);
2638 next unless $id =~ s#^refs/heads/(.+)-HEAD$#$1#;
2639 next unless -f "$git_dir/$id/info/url";
2640 my $new_ref = "refs/remotes/$id";
2641 if (::verify_ref("$new_ref^0")) {
2642 print STDERR "W: $orig_ref is probably an old ",
2643 "branch used by an ancient version of ",
2644 "git-svn.\n",
2645 "However, $new_ref also exists.\n",
2646 "We will not be able ",
2647 "to use this branch until this ",
2648 "ambiguity is resolved.\n";
2649 next;
2650 }
2651 print STDERR "Migrating from v0 layout...\n" if !$migrated;
2652 print STDERR "Renaming ref: $orig_ref => $new_ref\n";
2653 command_noisy('update-ref', $new_ref, $orig_ref);
2654 command_noisy('update-ref', '-d', $orig_ref, $orig_ref);
2655 $migrated++;
2656 }
2657 command_close_pipe($fh, $ctx);
2658 print STDERR "Done migrating from v0 layout...\n" if $migrated;
2659 $migrated;
2660}
2661sub migrate_from_v1 {
2663 my $git_dir = $ENV{GIT_DIR};
2664 my $migrated = 0;
2665 return $migrated unless -d $git_dir;
2666 my $svn_dir = "$git_dir/svn";
2667 # just in case somebody used 'svn' as their $id at some point...
2669 return $migrated if -d $svn_dir && ! -f "$svn_dir/info/url";
2670 print STDERR "Migrating from a git-svn v1 layout...\n";
2672 mkpath([$svn_dir]);
2673 print STDERR "Data from a previous version of git-svn exists, but\n\t",
2674 "$svn_dir\n\t(required for this version ",
2675 "($::VERSION) of git-svn) does not. exist\n";
2676 my ($fh, $ctx) = command_output_pipe(qw/rev-parse --symbolic --all/);
2677 while (<$fh>) {
2678 my $x = $_;
2679 next unless $x =~ s#^refs/remotes/##;
2680 chomp $x;
2681 next unless -f "$git_dir/$x/info/url";
2682 my $u = eval { ::file_to_s("$git_dir/$x/info/url") };
2683 next unless $u;
2684 my $dn = dirname("$git_dir/svn/$x");
2685 mkpath([$dn]) unless -d $dn;
2686 if ($x eq 'svn') { # they used 'svn' as GIT_SVN_ID:
2687 mkpath(["$git_dir/svn/svn"]);
2688 print STDERR " - $git_dir/$x/info => ",
2689 "$git_dir/svn/$x/info\n";
2690 rename "$git_dir/$x/info", "$git_dir/svn/$x/info" or
2691 croak "$!: $x";
2692 # don't worry too much about these, they probably
2693 # don't exist with repos this old (save for index,
2694 # and we can easily regenerate that)
2695 foreach my $f (qw/unhandled.log index .rev_db/) {
2696 rename "$git_dir/$x/$f", "$git_dir/svn/$x/$f";
2697 }
2698 } else {
2699 print STDERR " - $git_dir/$x => $git_dir/svn/$x\n";
2700 rename "$git_dir/$x", "$git_dir/svn/$x" or
2701 croak "$!: $x";
2702 }
2703 $migrated++;
2704 }
2705 command_close_pipe($fh, $ctx);
2706 print STDERR "Done migrating from a git-svn v1 layout\n";
2707 $migrated;
2708}
2709sub read_old_urls {
2711 my ($l_map, $pfx, $path) = @_;
2712 my @dir;
2713 foreach (<$path/*>) {
2714 if (-r "$_/info/url") {
2715 $pfx .= '/' if $pfx && $pfx !~ m!/$!;
2716 my $ref_id = $pfx . basename $_;
2717 my $url = ::file_to_s("$_/info/url");
2718 $l_map->{$ref_id} = $url;
2719 } elsif (-d $_) {
2720 push @dir, $_;
2721 }
2722 }
2723 foreach (@dir) {
2724 my $x = $_;
2725 $x =~ s!^\Q$ENV{GIT_DIR}\E/svn/!!o;
2726 read_old_urls($l_map, $x, $_);
2727 }
2728}
2729sub migrate_from_v2 {
2731 my @cfg = command(qw/config -l/);
2732 return if grep /^svn-remote\..+\.url=/, @cfg;
2733 my %l_map;
2734 read_old_urls(\%l_map, '', "$ENV{GIT_DIR}/svn");
2735 my $migrated = 0;
2736 foreach my $ref_id (sort keys %l_map) {
2738 Git::SVN->init($l_map{$ref_id}, '', $ref_id, $ref_id);
2739 $migrated++;
2740 }
2741 $migrated;
2742}
2743sub minimize_connections {
2745 my $r = Git::SVN::read_all_remotes();
2746 my $new_urls = {};
2747 my $root_repos = {};
2748 foreach my $repo_id (keys %$r) {
2749 my $url = $r->{$repo_id}->{url} or next;
2750 my $fetch = $r->{$repo_id}->{fetch} or next;
2751 my $ra = Git::SVN::Ra->new($url);
2752 # skip existing cases where we already connect to the root
2754 if (($ra->{url} eq $ra->{repos_root}) ||
2755 (Git::SVN::sanitize_remote_name($ra->{repos_root}) eq
2756 $repo_id)) {
2757 $root_repos->{$ra->{url}} = $repo_id;
2758 next;
2759 }
2760 my $root_ra = Git::SVN::Ra->new($ra->{repos_root});
2762 my $root_path = $ra->{url};
2763 $root_path =~ s#^\Q$ra->{repos_root}\E/*##;
2764 foreach my $path (keys %$fetch) {
2765 my $ref_id = $fetch->{$path};
2766 my $gs = Git::SVN->new($ref_id, $repo_id, $path);
2767 # make sure we can read when connecting to
2769 # a higher level of a repository
2770 my ($last_rev, undef) = $gs->last_rev_commit;
2771 if (!defined $last_rev) {
2772 $last_rev = eval {
2773 $root_ra->get_latest_revnum;
2774 };
2775 next if $@;
2776 }
2777 my $new = $root_path;
2778 $new .= length $path ? "/$path" : '';
2779 eval {
2780 $root_ra->get_log([$new], $last_rev, $last_rev,
2781 0, 0, 1, sub { });
2782 };
2783 next if $@;
2784 $new_urls->{$ra->{repos_root}}->{$new} =
2785 { ref_id => $ref_id,
2786 old_repo_id => $repo_id,
2787 old_path => $path };
2788 }
2789 }
2790 my @emptied;
2792 foreach my $url (keys %$new_urls) {
2793 # see if we can re-use an existing [svn-remote "repo_id"]
2794 # instead of creating a(n ugly) new section:
2795 my $repo_id = $root_repos->{$url} ||
2796 Git::SVN::sanitize_remote_name($url);
2797 my $fetch = $new_urls->{$url};
2799 foreach my $path (keys %$fetch) {
2800 my $x = $fetch->{$path};
2801 Git::SVN->init($url, $path, $repo_id, $x->{ref_id});
2802 my $pfx = "svn-remote.$x->{old_repo_id}";
2803 my $old_fetch = quotemeta("$x->{old_path}:".
2805 "refs/remotes/$x->{ref_id}");
2806 command_noisy(qw/config --unset/,
2807 "$pfx.fetch", '^'. $old_fetch . '$');
2808 delete $r->{$x->{old_repo_id}}->
2809 {fetch}->{$x->{old_path}};
2810 if (!keys %{$r->{$x->{old_repo_id}}->{fetch}}) {
2811 command_noisy(qw/config --unset/,
2812 "$pfx.url");
2813 push @emptied, $x->{old_repo_id}
2814 }
2815 }
2816 }
2817 if (@emptied) {
2818 my $file = $ENV{GIT_CONFIG} || $ENV{GIT_CONFIG_LOCAL} ||
2819 "$ENV{GIT_DIR}/config";
2820 print STDERR <<EOF;
2821The following [svn-remote] sections in your config file ($file) are empty
2822and can be safely removed:
2823EOF
2824 print STDERR "[svn-remote \"$_\"]\n" foreach @emptied;
2825 }
2826}
2827sub migration_check {
2829 migrate_from_v0();
2830 migrate_from_v1();
2831 migrate_from_v2();
2832 minimize_connections() if $_minimize;
2833}
2834__END__
2836Data structures:
2838$log_entry hashref as returned by libsvn_log_entry()
2840{
2841 log => 'whitespace-formatted log entry
2842', # trailing newline is preserved
2843 revision => '8', # integer
2844 date => '2004-02-24T17:01:44.108345Z', # commit date
2845 author => 'committer name'
2846};
2847@mods = array of diff-index line hashes, each element represents one line
2849 of diff-index output
2850diff-index line ($m hash)
2852{
2853 mode_a => first column of diff-index output, no leading ':',
2854 mode_b => second column of diff-index output,
2855 sha1_b => sha1sum of the final blob,
2856 chg => change type [MCRADT],
2857 file_a => original file name of a file (iff chg is 'C' or 'R')
2858 file_b => new/current file name of a file (any chg)
2859}
2860;
2861# retval of read_url_paths{,_all}();
2863$l_map = {
2864 # repository root url
2865 'https://svn.musicpd.org' => {
2866 # repository path # GIT_SVN_ID
2867 'mpd/trunk' => 'trunk',
2868 'mpd/tags/0.11.5' => 'tags/0.11.5',
2869 },
2870}
2871Notes:
2873 I don't trust the each() function on unless I created %hash myself
2874 because the internal iterator may not have started at base.