8d49959f37ccd29926fd9cc993abd29ef979c4ca
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 = $ENV{GIT_SVN_ID} || 'git-svn';
18my $LC_ALL = $ENV{LC_ALL};
20$Git::SVN::Log::TZ = $ENV{TZ};
21# make sure the svn binary gives consistent output between locales and TZs:
22$ENV{TZ} = 'UTC';
23$ENV{LC_ALL} = 'C';
24$| = 1; # unbuffer STDOUT
25sub fatal (@) { print STDERR @_; exit 1 }
27require SVN::Core; # use()-ing this causes segfaults for me... *shrug*
28require SVN::Ra;
29require SVN::Delta;
30if ($SVN::Core::VERSION lt '1.1.0') {
31 fatal "Need SVN::Core 1.1.0 or better (got $SVN::Core::VERSION)\n";
32}
33push @Git::SVN::Ra::ISA, 'SVN::Ra';
34push @SVN::Git::Editor::ISA, 'SVN::Delta::Editor';
35push @SVN::Git::Fetcher::ISA, 'SVN::Delta::Editor';
36use Carp qw/croak/;
37use IO::File qw//;
38use File::Basename qw/dirname basename/;
39use File::Path qw/mkpath/;
40use Getopt::Long qw/:config gnu_getopt no_ignore_case auto_abbrev pass_through/;
41use IPC::Open3;
42use Git;
43BEGIN {
45 my $s;
46 foreach (qw/command command_oneline command_noisy command_output_pipe
47 command_input_pipe command_close_pipe/) {
48 $s .= "*SVN::Git::Editor::$_ = *SVN::Git::Fetcher::$_ = ".
49 "*Git::SVN::Migration::$_ = ".
50 "*Git::SVN::Log::$_ = *Git::SVN::$_ = *$_ = *Git::$_; ";
51 }
52 eval $s;
53}
54my ($SVN);
56my $_optimize_commits = 1 unless $ENV{GIT_SVN_NO_OPTIMIZE_COMMITS};
58$sha1 = qr/[a-f\d]{40}/;
59$sha1_short = qr/[a-f\d]{4,40}/;
60my ($_stdin, $_help, $_edit,
61 $_repack, $_repack_nr, $_repack_flags,
62 $_message, $_file, $_no_metadata,
63 $_template, $_shared,
64 $_version, $_upgrade,
65 $_merge, $_strategy, $_dry_run,
66 $_prefix);
67my %remote_opts = ( 'username=s' => \$Git::SVN::Prompt::_username,
69 'config-dir=s' => \$Git::SVN::Ra::config_dir,
70 'no-auth-cache' => \$Git::SVN::Prompt::_no_auth_cache );
71my %fc_opts = ( 'follow-parent|follow' => \$_follow_parent,
72 'authors-file|A=s' => \$_authors,
73 'repack:i' => \$_repack,
74 'no-metadata' => \$_no_metadata,
75 'quiet|q' => \$_q,
76 'repack-flags|repack-args|repack-opts=s' => \$_repack_flags,
77 %remote_opts );
78my ($_trunk, $_tags, $_branches);
80my %multi_opts = ( 'trunk|T=s' => \$_trunk,
81 'tags|t=s' => \$_tags,
82 'branches|b=s' => \$_branches );
83my %init_opts = ( 'template=s' => \$_template, 'shared' => \$_shared );
84my %cmt_opts = ( 'edit|e' => \$_edit,
85 'rmdir' => \$_rmdir,
86 'find-copies-harder' => \$_find_copies_harder,
87 'l=i' => \$_l,
88 'copy-similarity|C=i'=> \$_cp_similarity
89);
90my %cmd = (
92 fetch => [ \&cmd_fetch, "Download new revisions from SVN",
93 { 'revision|r=s' => \$_revision, %fc_opts } ],
94 init => [ \&cmd_init, "Initialize a repo for tracking" .
95 " (requires URL argument)",
96 \%init_opts ],
97 dcommit => [ \&cmd_dcommit,
98 'Commit several diffs to merge with upstream',
99 { 'merge|m|M' => \$_merge,
100 'strategy|s=s' => \$_strategy,
101 'dry-run|n' => \$_dry_run,
102 %cmt_opts, %fc_opts } ],
103 'set-tree' => [ \&cmd_set_tree,
104 "Set an SVN repository to a git tree-ish",
105 { 'stdin|' => \$_stdin, %cmt_opts, %fc_opts, } ],
106 'show-ignore' => [ \&cmd_show_ignore, "Show svn:ignore listings",
107 { 'revision|r=i' => \$_revision } ],
108 rebuild => [ \&cmd_rebuild, "Rebuild git-svn metadata (after git clone)",
109 { 'copy-remote|remote=s' => \$_cp_remote,
110 'upgrade' => \$_upgrade } ],
111 'multi-init' => [ \&cmd_multi_init,
112 'Initialize multiple trees (like git-svnimport)',
113 { %multi_opts, %init_opts, %remote_opts,
114 'revision|r=i' => \$_revision,
115 'prefix=s' => \$_prefix,
116 } ],
117 'multi-fetch' => [ \&cmd_multi_fetch,
118 'Fetch multiple trees (like git-svnimport)',
119 \%fc_opts ],
120 'migrate' => [ sub { },
121 # no-op, we automatically run this anyways,
122 'Migrate configuration/metadata/layout from
123 previous versions of git-svn',
124 \%remote_opts ],
125 'log' => [ \&Git::SVN::Log::cmd_show_log, 'Show commit logs',
126 { 'limit=i' => \$Git::SVN::Log::limit,
127 'revision|r=s' => \$_revision,
128 'verbose|v' => \$Git::SVN::Log::verbose,
129 'incremental' => \$Git::SVN::Log::incremental,
130 'oneline' => \$Git::SVN::Log::oneline,
131 'show-commit' => \$Git::SVN::Log::show_commit,
132 'non-recursive' => \$Git::SVN::Log::non_recursive,
133 'authors-file|A=s' => \$_authors,
134 'color' => \$Git::SVN::Log::color,
135 'pager=s' => \$Git::SVN::Log::pager,
136 } ],
137 'commit-diff' => [ \&cmd_commit_diff,
138 'Commit a diff between two trees',
139 { 'message|m=s' => \$_message,
140 'file|F=s' => \$_file,
141 'revision|r=s' => \$_revision,
142 %cmt_opts } ],
143);
144my $cmd;
146for (my $i = 0; $i < @ARGV; $i++) {
147 if (defined $cmd{$ARGV[$i]}) {
148 $cmd = $ARGV[$i];
149 splice @ARGV, $i, 1;
150 last;
151 }
152};
153my %opts = %{$cmd{$cmd}->[2]} if (defined $cmd);
155read_repo_config(\%opts);
157my $rv = GetOptions(%opts, 'help|H|h' => \$_help,
158 'version|V' => \$_version,
159 'minimize-connections' =>
160 \$Git::SVN::Migration::_minimize,
161 'id|i=s' => \$Git::SVN::default_repo_id);
162exit 1 if (!$rv && $cmd ne 'log');
163usage(0) if $_help;
165version() if $_version;
166usage(1) unless defined $cmd;
167load_authors() if $_authors;
168unless ($cmd =~ /^(?:init|rebuild|multi-init|commit-diff)$/) {
169 Git::SVN::Migration::migration_check();
170}
171$cmd{$cmd}->[0]->(@ARGV);
172exit 0;
173####################### primary functions ######################
175sub usage {
176 my $exit = shift || 0;
177 my $fd = $exit ? \*STDERR : \*STDOUT;
178 print $fd <<"";
179git-svn - bidirectional operations between a single Subversion tree and git
180Usage: $0 <command> [options] [arguments]\n
181 print $fd "Available commands:\n" unless $cmd;
183 foreach (sort keys %cmd) {
185 next if $cmd && $cmd ne $_;
186 print $fd ' ',pack('A17',$_),$cmd{$_}->[1],"\n";
187 foreach (keys %{$cmd{$_}->[2]}) {
188 # prints out arguments as they should be passed:
189 my $x = s#[:=]s$## ? '<arg>' : s#[:=]i$## ? '<num>' : '';
190 print $fd ' ' x 21, join(', ', map { length $_ > 1 ?
191 "--$_" : "-$_" }
192 split /\|/,$_)," $x\n";
193 }
194 }
195 print $fd <<"";
196\nGIT_SVN_ID may be set in the environment or via the --id/-i switch to an
197arbitrary identifier if you're tracking multiple SVN branches/repositories in
198one git repository and want to keep them separate. See git-svn(1) for more
199information.
200 exit $exit;
202}
203sub version {
205 print "git-svn version $VERSION (svn $SVN::Core::VERSION)\n";
206 exit 0;
207}
208sub cmd_rebuild {
210 my $url = shift;
211 my $gs = $url ? Git::SVN->init($url)
212 : eval { Git::SVN->new };
213 $gs ||= Git::SVN->_new;
214 if (!verify_ref($gs->refname.'^0')) {
215 $gs->copy_remote_ref;
216 }
217 my ($rev_list, $ctx) = command_output_pipe("rev-list", $gs->refname);
219 my $latest;
220 my $svn_uuid;
221 while (<$rev_list>) {
222 chomp;
223 my $c = $_;
224 fatal "Non-SHA1: $c\n" unless $c =~ /^$sha1$/o;
225 my ($url, $rev, $uuid) = cmt_metadata($c);
226 # ignore merges (from set-tree)
228 next if (!defined $rev || !$uuid);
229 # if we merged or otherwise started elsewhere, this is
231 # how we break out of it
232 if ((defined $svn_uuid && ($uuid ne $svn_uuid)) ||
233 ($gs->{url} && $url && ($url ne $gs->{url}))) {
234 next;
235 }
236 unless (defined $latest) {
238 if (!$gs->{url} && !$url) {
239 fatal "SVN repository location required\n";
240 }
241 $gs = Git::SVN->init($url);
242 $latest = $rev;
243 }
244 $gs->rev_db_set($rev, $c);
245 print "r$rev = $c\n";
246 }
247 command_close_pipe($rev_list, $ctx);
248}
249sub do_git_init_db {
251 unless (-d $ENV{GIT_DIR}) {
252 my @init_db = ('init');
253 push @init_db, "--template=$_template" if defined $_template;
254 push @init_db, "--shared" if defined $_shared;
255 command_noisy(@init_db);
256 }
257}
258sub cmd_init {
260 my $url = shift or die "SVN repository location required " .
261 "as a command-line argument\n";
262 if (my $repo_path = shift) {
263 unless (-d $repo_path) {
264 mkpath([$repo_path]);
265 }
266 chdir $repo_path or croak $!;
267 $ENV{GIT_DIR} = $repo_path . "/.git";
268 }
269 do_git_init_db();
270 Git::SVN->init($url);
272}
273sub cmd_fetch {
275 my $gs = Git::SVN->new;
276 $gs->fetch(@_);
277 if ($gs->{last_commit} && !verify_ref('refs/heads/master^0')) {
278 command_noisy(qw(update-ref refs/heads/master),
279 $gs->{last_commit});
280 }
281}
282sub cmd_set_tree {
284 my (@commits) = @_;
285 if ($_stdin || !@commits) {
286 print "Reading from stdin...\n";
287 @commits = ();
288 while (<STDIN>) {
289 if (/\b($sha1_short)\b/o) {
290 unshift @commits, $1;
291 }
292 }
293 }
294 my @revs;
295 foreach my $c (@commits) {
296 my @tmp = command('rev-parse',$c);
297 if (scalar @tmp == 1) {
298 push @revs, $tmp[0];
299 } elsif (scalar @tmp > 1) {
300 push @revs, reverse(command('rev-list',@tmp));
301 } else {
302 fatal "Failed to rev-parse $c\n";
303 }
304 }
305 my $gs = Git::SVN->new;
306 my ($r_last, $cmt_last) = $gs->last_rev_commit;
307 $gs->fetch;
308 if ($r_last != $gs->{last_rev}) {
309 fatal "There are new revisions that were fetched ",
310 "and need to be merged (or acknowledged) ",
311 "before committing.\nlast rev: $r_last\n",
312 " current: $gs->{last_rev}\n";
313 }
314 $gs->set_tree($_) foreach @revs;
315 print "Done committing ",scalar @revs," revisions to SVN\n";
316}
317sub cmd_dcommit {
319 my $head = shift;
320 my $gs = Git::SVN->new;
321 $head ||= 'HEAD';
322 my @refs = command(qw/rev-list --no-merges/, $gs->refname."..$head");
323 my $last_rev;
324 foreach my $d (reverse @refs) {
325 if (!verify_ref("$d~1")) {
326 fatal "Commit $d\n",
327 "has no parent commit, and therefore ",
328 "nothing to diff against.\n",
329 "You should be working from a repository ",
330 "originally created by git-svn\n";
331 }
332 unless (defined $last_rev) {
333 (undef, $last_rev, undef) = cmt_metadata("$d~1");
334 unless (defined $last_rev) {
335 fatal "Unable to extract revision information ",
336 "from commit $d~1\n";
337 }
338 }
339 if ($_dry_run) {
340 print "diff-tree $d~1 $d\n";
341 } else {
342 my $log = get_commit_entry($d)->{log};
343 my $ra = $gs->ra;
344 my $pool = SVN::Pool->new;
345 my %ed_opts = ( r => $last_rev,
346 ra => $ra->dup,
347 svn_path => $ra->{svn_path} );
348 my $ed = SVN::Git::Editor->new(\%ed_opts,
349 $ra->get_commit_editor($log,
350 sub { print "Committed r$_[0]\n";
351 $last_rev = $_[0]; }),
352 $pool);
353 my $mods = $ed->apply_diff("$d~1", $d);
354 if (@$mods == 0) {
355 print "No changes\n$d~1 == $d\n";
356 }
357 }
358 }
359 return if $_dry_run;
360 $gs->fetch;
361 # we always want to rebase against the current HEAD, not any
362 # head that was passed to us
363 my @diff = command('diff-tree', 'HEAD', $gs->refname, '--');
364 my @finish;
365 if (@diff) {
366 @finish = qw/rebase/;
367 push @finish, qw/--merge/ if $_merge;
368 push @finish, "--strategy=$_strategy" if $_strategy;
369 print STDERR "W: HEAD and ", $gs->refname, " differ, ",
370 "using @finish:\n", "@diff";
371 } else {
372 print "No changes between current HEAD and ",
373 $gs->refname, "\nResetting to the latest ",
374 $gs->refname, "\n";
375 @finish = qw/reset --mixed/;
376 }
377 command_noisy(@finish, $gs->refname);
378}
379sub cmd_show_ignore {
381 my $gs = Git::SVN->new;
382 my $r = (defined $_revision ? $_revision : $gs->ra->get_latest_revnum);
383 $gs->traverse_ignore(\*STDOUT, '', $r);
384}
385sub cmd_multi_init {
387 my $url = shift;
388 unless (defined $_trunk || defined $_branches || defined $_tags) {
389 usage(1);
390 }
391 do_git_init_db();
392 $_prefix = '' unless defined $_prefix;
393 $url =~ s#/+$## if defined $url;
394 if (defined $_trunk) {
395 my $trunk_ref = $_prefix . 'trunk';
396 # try both old-style and new-style lookups:
397 my $gs_trunk = eval { Git::SVN->new($trunk_ref) };
398 unless ($gs_trunk) {
399 my ($trunk_url, $trunk_path) =
400 complete_svn_url($url, $_trunk);
401 $gs_trunk = Git::SVN->init($trunk_url, $trunk_path,
402 undef, $trunk_ref);
403 }
404 }
405 return unless defined $_branches || defined $_tags;
406 my $ra = $url ? Git::SVN::Ra->new($url) : undef;
407 complete_url_ls_init($ra, $_branches, '--branches/-b', $_prefix);
408 complete_url_ls_init($ra, $_tags, '--tags/-t', $_prefix . 'tags/');
409}
410sub cmd_multi_fetch {
412 my @gs;
413 foreach (command(qw/config -l/)) {
414 next unless m!^svn-remote\.(.+)\.fetch=
415 \s*(.*)\s*:\s*refs/remotes/(.+)\s*$!x;
416 my ($repo_id, $path, $ref_id) = ($1, $2, $3);
417 push @gs, Git::SVN->new($ref_id, $repo_id, $path);
418 }
419 foreach (@gs) {
420 $_->fetch;
421 }
422}
423# this command is special because it requires no metadata
425sub cmd_commit_diff {
426 my ($ta, $tb, $url) = @_;
427 my $usage = "Usage: $0 commit-diff -r<revision> ".
428 "<tree-ish> <tree-ish> [<URL>]\n";
429 fatal($usage) if (!defined $ta || !defined $tb);
430 if (!defined $url) {
431 my $gs = eval { Git::SVN->new };
432 if (!$gs) {
433 fatal("Needed URL or usable git-svn --id in ",
434 "the command-line\n", $usage);
435 }
436 $url = $gs->{url};
437 }
438 unless (defined $_revision) {
439 fatal("-r|--revision is a required argument\n", $usage);
440 }
441 if (defined $_message && defined $_file) {
442 fatal("Both --message/-m and --file/-F specified ",
443 "for the commit message.\n",
444 "I have no idea what you mean\n");
445 }
446 if (defined $_file) {
447 $_message = file_to_s($_file);
448 } else {
449 $_message ||= get_commit_entry($tb)->{log};
450 }
451 my $ra ||= Git::SVN::Ra->new($url);
452 my $r = $_revision;
453 if ($r eq 'HEAD') {
454 $r = $ra->get_latest_revnum;
455 } elsif ($r !~ /^\d+$/) {
456 die "revision argument: $r not understood by git-svn\n";
457 }
458 my $pool = SVN::Pool->new;
459 my %ed_opts = ( r => $r,
460 ra => $ra->dup,
461 svn_path => $ra->{svn_path} );
462 my $ed = SVN::Git::Editor->new(\%ed_opts,
463 $ra->get_commit_editor($_message,
464 sub { print "Committed r$_[0]\n" }),
465 $pool);
466 my $mods = $ed->apply_diff($ta, $tb);
467 if (@$mods == 0) {
468 print "No changes\n$ta == $tb\n";
469 }
470 $pool->clear;
471}
472########################### utility functions #########################
474sub complete_svn_url {
476 my ($url, $path) = @_;
477 $path =~ s#/+$##;
478 if ($path !~ m#^[a-z\+]+://#) {
479 if (!defined $url || $url !~ m#^[a-z\+]+://#) {
480 fatal("E: '$path' is not a complete URL ",
481 "and a separate URL is not specified\n");
482 }
483 return ($url, $path);
484 }
485 return ($path, '');
486}
487sub complete_url_ls_init {
489 my ($ra, $repo_path, $switch, $pfx) = @_;
490 unless ($repo_path) {
491 print STDERR "W: $switch not specified\n";
492 return;
493 }
494 $repo_path =~ s#/+$##;
495 if ($repo_path =~ m#^[a-z\+]+://#) {
496 $ra = Git::SVN::Ra->new($repo_path);
497 $repo_path = '';
498 } else {
499 $repo_path =~ s#^/+##;
500 unless ($ra) {
501 fatal("E: '$repo_path' is not a complete URL ",
502 "and a separate URL is not specified\n");
503 }
504 }
505 my $r = defined $_revision ? $_revision : $ra->get_latest_revnum;
506 my ($dirent, undef, undef) = $ra->get_dir($repo_path, $r);
507 my $url = $ra->{url};
508 foreach my $d (sort keys %$dirent) {
509 next if ($dirent->{$d}->kind != $SVN::Node::dir);
510 my $path = "$repo_path/$d";
511 my $ref = "$pfx$d";
512 my $gs = eval { Git::SVN->new($ref) };
513 # don't try to init already existing refs
514 unless ($gs) {
515 print "init $url/$path => $ref\n";
516 Git::SVN->init($url, $path, undef, $ref);
517 }
518 }
519}
520sub verify_ref {
522 my ($ref) = @_;
523 eval { command_oneline([ 'rev-parse', '--verify', $ref ],
524 { STDERR => 0 }); };
525}
526sub get_tree_from_treeish {
528 my ($treeish) = @_;
529 # $treeish can be a symbolic ref, too:
530 my $type = command_oneline(qw/cat-file -t/, $treeish);
531 my $expected;
532 while ($type eq 'tag') {
533 ($treeish, $type) = command(qw/cat-file tag/, $treeish);
534 }
535 if ($type eq 'commit') {
536 $expected = (grep /^tree /, command(qw/cat-file commit/,
537 $treeish))[0];
538 ($expected) = ($expected =~ /^tree ($sha1)$/o);
539 die "Unable to get tree from $treeish\n" unless $expected;
540 } elsif ($type eq 'tree') {
541 $expected = $treeish;
542 } else {
543 die "$treeish is a $type, expected tree, tag or commit\n";
544 }
545 return $expected;
546}
547sub get_commit_entry {
549 my ($treeish) = shift;
550 my %log_entry = ( log => '', tree => get_tree_from_treeish($treeish) );
551 my $commit_editmsg = "$ENV{GIT_DIR}/COMMIT_EDITMSG";
552 my $commit_msg = "$ENV{GIT_DIR}/COMMIT_MSG";
553 open my $log_fh, '>', $commit_editmsg or croak $!;
554 my $type = command_oneline(qw/cat-file -t/, $treeish);
556 if ($type eq 'commit' || $type eq 'tag') {
557 my ($msg_fh, $ctx) = command_output_pipe('cat-file',
558 $type, $treeish);
559 my $in_msg = 0;
560 while (<$msg_fh>) {
561 if (!$in_msg) {
562 $in_msg = 1 if (/^\s*$/);
563 } elsif (/^git-svn-id: /) {
564 # skip this for now, we regenerate the
565 # correct one on re-fetch anyways
566 # TODO: set *:merge properties or like...
567 } else {
568 print $log_fh $_ or croak $!;
569 }
570 }
571 command_close_pipe($msg_fh, $ctx);
572 }
573 close $log_fh or croak $!;
574 if ($_edit || ($type eq 'tree')) {
576 my $editor = $ENV{VISUAL} || $ENV{EDITOR} || 'vi';
577 # TODO: strip out spaces, comments, like git-commit.sh
578 system($editor, $commit_editmsg);
579 }
580 rename $commit_editmsg, $commit_msg or croak $!;
581 open $log_fh, '<', $commit_msg or croak $!;
582 { local $/; chomp($log_entry{log} = <$log_fh>); }
583 close $log_fh or croak $!;
584 unlink $commit_msg;
585 \%log_entry;
586}
587sub s_to_file {
589 my ($str, $file, $mode) = @_;
590 open my $fd,'>',$file or croak $!;
591 print $fd $str,"\n" or croak $!;
592 close $fd or croak $!;
593 chmod ($mode &~ umask, $file) if (defined $mode);
594}
595sub file_to_s {
597 my $file = shift;
598 open my $fd,'<',$file or croak "$!: file: $file\n";
599 local $/;
600 my $ret = <$fd>;
601 close $fd or croak $!;
602 $ret =~ s/\s*$//s;
603 return $ret;
604}
605# '<svn username> = real-name <email address>' mapping based on git-svnimport:
607sub load_authors {
608 open my $authors, '<', $_authors or die "Can't open $_authors $!\n";
609 my $log = $cmd eq 'log';
610 while (<$authors>) {
611 chomp;
612 next unless /^(\S+?|\(no author\))\s*=\s*(.+?)\s*<(.+)>\s*$/;
613 my ($user, $name, $email) = ($1, $2, $3);
614 if ($log) {
615 $Git::SVN::Log::rusers{"$name <$email>"} = $user;
616 } else {
617 $users{$user} = [$name, $email];
618 }
619 }
620 close $authors or croak $!;
621}
622# convert GetOpt::Long specs for use by git-config
624sub read_repo_config {
625 return unless -d $ENV{GIT_DIR};
626 my $opts = shift;
627 foreach my $o (keys %$opts) {
628 my $v = $opts->{$o};
629 my ($key) = ($o =~ /^([a-z\-]+)/);
630 $key =~ s/-//g;
631 my $arg = 'git-config';
632 $arg .= ' --int' if ($o =~ /[:=]i$/);
633 $arg .= ' --bool' if ($o !~ /[:=][sfi]$/);
634 if (ref $v eq 'ARRAY') {
635 chomp(my @tmp = `$arg --get-all svn.$key`);
636 @$v = @tmp if @tmp;
637 } else {
638 chomp(my $tmp = `$arg --get svn.$key`);
639 if ($tmp && !($arg =~ / --bool/ && $tmp eq 'false')) {
640 $$v = $tmp;
641 }
642 }
643 }
644}
645sub extract_metadata {
647 my $id = shift or return (undef, undef, undef);
648 my ($url, $rev, $uuid) = ($id =~ /^git-svn-id:\s(\S+?)\@(\d+)
649 \s([a-f\d\-]+)$/x);
650 if (!defined $rev || !$uuid || !$url) {
651 # some of the original repositories I made had
652 # identifiers like this:
653 ($rev, $uuid) = ($id =~/^git-svn-id:\s(\d+)\@([a-f\d\-]+)/);
654 }
655 return ($url, $rev, $uuid);
656}
657sub cmt_metadata {
659 return extract_metadata((grep(/^git-svn-id: /,
660 command(qw/cat-file commit/, shift)))[-1]);
661}
662sub get_commit_time {
664 my $cmt = shift;
665 my $fh = command_output_pipe(qw/rev-list --pretty=raw -n1/, $cmt);
666 while (<$fh>) {
667 /^committer\s(?:.+) (\d+) ([\-\+]?\d+)$/ or next;
668 my ($s, $tz) = ($1, $2);
669 if ($tz =~ s/^\+//) {
670 $s += tz_to_s_offset($tz);
671 } elsif ($tz =~ s/^\-//) {
672 $s -= tz_to_s_offset($tz);
673 }
674 close $fh;
675 return $s;
676 }
677 die "Can't get commit time for commit: $cmt\n";
678}
679sub tz_to_s_offset {
681 my ($tz) = @_;
682 $tz =~ s/(\d\d)$//;
683 return ($1 * 60) + ($tz * 3600);
684}
685package Git::SVN;
687use strict;
688use warnings;
689use vars qw/$default_repo_id/;
690use Carp qw/croak/;
691use File::Path qw/mkpath/;
692use IPC::Open3;
693# properties that we do not log:
695my %SKIP_PROP;
696BEGIN {
697 %SKIP_PROP = map { $_ => 1 } qw/svn:wc:ra_dav:version-url
698 svn:special svn:executable
699 svn:entry:committed-rev
700 svn:entry:last-author
701 svn:entry:uuid
702 svn:entry:committed-date/;
703}
704sub read_all_remotes {
706 my $r = {};
707 foreach (grep { s/^svn-remote\.// } command(qw/repo-config -l/)) {
708 if (m!^(.+)\.fetch=\s*(.*)\s*:\s*refs/remotes/(.+)\s*$!) {
709 $r->{$1}->{fetch}->{$2} = $3;
710 } elsif (m!^(.+)\.url=\s*(.*)\s*$!) {
711 $r->{$1}->{url} = $2;
712 }
713 }
714 $r;
715}
716# we allow more chars than remotes2config.sh...
718sub sanitize_remote_name {
719 my ($name) = @_;
720 $name =~ tr{A-Za-z0-9:,/+-}{.}c;
721 $name;
722}
723sub init {
725 my ($class, $url, $path, $repo_id, $ref_id) = @_;
726 my $self = _new($class, $repo_id, $ref_id, $path);
727 mkpath([$self->{dir}]);
728 if (defined $url) {
729 $url =~ s!/+$!!; # strip trailing slash
730 my $orig_url = eval {
731 command_oneline('config', '--get',
732 "svn-remote.$repo_id.url")
733 };
734 if ($orig_url) {
735 if ($orig_url ne $url) {
736 die "svn-remote.$repo_id.url already set: ",
737 "$orig_url\nwanted to set to: $url\n";
738 }
739 } else {
740 command_noisy('config',
741 "svn-remote.$repo_id.url", $url);
742 }
743 command_noisy('config', '--add',
744 "svn-remote.$repo_id.fetch",
745 "$path:".$self->refname);
746 }
747 $self->{url} = $url;
748 unless (-f $self->{db_path}) {
749 open my $fh, '>>', $self->{db_path} or croak $!;
750 close $fh or croak $!;
751 }
752 $self;
753}
754sub find_ref {
756 my ($ref_id) = @_;
757 foreach (command(qw/config -l/)) {
758 next unless m!^svn-remote\.(.+)\.fetch=
759 \s*(.*)\s*:\s*refs/remotes/(.+)\s*$!x;
760 my ($repo_id, $path, $ref) = ($1, $2, $3);
761 if ($ref eq $ref_id) {
762 $path = '' if ($path =~ m#^\./?#);
763 return ($repo_id, $path);
764 }
765 }
766 (undef, undef, undef);
767}
768sub new {
770 my ($class, $ref_id, $repo_id, $path) = @_;
771 if (defined $ref_id && !defined $repo_id && !defined $path) {
772 ($repo_id, $path) = find_ref($ref_id);
773 if (!defined $repo_id) {
774 die "Could not find a \"svn-remote.*.fetch\" key ",
775 "in the repository configuration matching: ",
776 "refs/remotes/$ref_id\n";
777 }
778 }
779 my $self = _new($class, $repo_id, $ref_id, $path);
780 $self->{url} = command_oneline('config', '--get',
781 "svn-remote.$repo_id.url") or
782 die "Failed to read \"svn-remote.$repo_id.url\" in config\n";
783 $self;
784}
785sub refname { "refs/remotes/$_[0]->{ref_id}" }
787sub ra {
789 my ($self) = shift;
790 $self->{ra} ||= Git::SVN::Ra->new($self->{url});
791}
792sub rel_path {
794 my ($self) = @_;
795 my $repos_root = $self->ra->{repos_root};
796 return $self->{path} if ($self->{url} eq $repos_root);
797 my $url = $self->{url} .
798 (length $self->{path} ? "/$self->{path}" : $self->{path});
799 $url =~ s!^\Q$repos_root\E/*!!g;
800 $url;
801}
802sub copy_remote_ref {
804 my ($self) = @_;
805 my $origin = $::_cp_remote ? $::_cp_remote : 'origin';
806 my $ref = $self->refname;
807 if (command('ls-remote', $origin, $ref)) {
808 command_noisy('fetch', $origin, "$ref:$ref");
809 } elsif ($::_cp_remote && !$::_upgrade) {
810 die "Unable to find remote reference: $ref on $origin\n";
811 }
812}
813sub traverse_ignore {
815 my ($self, $fh, $path, $r) = @_;
816 $path =~ s#^/+##g;
817 my ($dirent, undef, $props) = $self->ra->get_dir($path, $r);
818 my $p = $path;
819 $p =~ s#^\Q$self->{ra}->{svn_path}\E/##;
820 print $fh length $p ? "\n# $p\n" : "\n# /\n";
821 if (my $s = $props->{'svn:ignore'}) {
822 $s =~ s/[\r\n]+/\n/g;
823 chomp $s;
824 if (length $p == 0) {
825 $s =~ s#\n#\n/$p#g;
826 print $fh "/$s\n";
827 } else {
828 $s =~ s#\n#\n/$p/#g;
829 print $fh "/$p/$s\n";
830 }
831 }
832 foreach (sort keys %$dirent) {
833 next if $dirent->{$_}->kind != $SVN::Node::dir;
834 $self->traverse_ignore($fh, "$path/$_", $r);
835 }
836}
837# returns the newest SVN revision number and newest commit SHA1
839sub last_rev_commit {
840 my ($self) = @_;
841 if (defined $self->{last_rev} && defined $self->{last_commit}) {
842 return ($self->{last_rev}, $self->{last_commit});
843 }
844 my $c = ::verify_ref($self->refname.'^0');
845 if ($c) {
846 my $rev = (::cmt_metadata($c))[1];
847 if (defined $rev) {
848 ($self->{last_rev}, $self->{last_commit}) = ($rev, $c);
849 return ($rev, $c);
850 }
851 }
852 my $offset = -41; # from tail
853 my $rl;
854 open my $fh, '<', $self->{db_path} or
855 croak "$self->{db_path} not readable: $!\n";
856 seek $fh, $offset, 2;
857 $rl = readline $fh;
858 defined $rl or return (undef, undef);
859 chomp $rl;
860 while ($c ne $rl && tell $fh != 0) {
861 $offset -= 41;
862 seek $fh, $offset, 2;
863 $rl = readline $fh;
864 defined $rl or return (undef, undef);
865 chomp $rl;
866 }
867 my $rev = tell $fh;
868 croak $! if ($rev < 0);
869 $rev = ($rev - 41) / 41;
870 close $fh or croak $!;
871 ($self->{last_rev}, $self->{last_commit}) = ($rev, $c);
872 return ($rev, $c);
873}
874sub parse_revision {
876 my ($self, $base) = @_;
877 my $head = $self->ra->get_latest_revnum;
878 if (!defined $::_revision || $::_revision eq 'BASE:HEAD') {
879 return ($base + 1, $head) if (defined $base);
880 return (0, $head);
881 }
882 return ($1, $2) if ($::_revision =~ /^(\d+):(\d+)$/);
883 return ($::_revision, $::_revision) if ($::_revision =~ /^\d+$/);
884 if ($::_revision =~ /^BASE:(\d+)$/) {
885 return ($base + 1, $1) if (defined $base);
886 return (0, $head);
887 }
888 return ($1, $head) if ($::_revision =~ /^(\d+):HEAD$/);
889 die "revision argument: $::_revision not understood by git-svn\n",
890 "Try using the command-line svn client instead\n";
891}
892sub tmp_index_do {
894 my ($self, $sub) = @_;
895 my $old_index = $ENV{GIT_INDEX_FILE};
896 $ENV{GIT_INDEX_FILE} = $self->{index};
897 my @ret = &$sub;
898 if ($old_index) {
899 $ENV{GIT_INDEX_FILE} = $old_index;
900 } else {
901 delete $ENV{GIT_INDEX_FILE};
902 }
903 wantarray ? @ret : $ret[0];
904}
905sub assert_index_clean {
907 my ($self, $treeish) = @_;
908 $self->tmp_index_do(sub {
910 command_noisy('read-tree', $treeish) unless -e $self->{index};
911 my $x = command_oneline('write-tree');
912 my ($y) = (command(qw/cat-file commit/, $treeish) =~
913 /^tree ($::sha1)/mo);
914 if ($y ne $x) {
915 unlink $self->{index} or croak $!;
916 command_noisy('read-tree', $treeish);
917 }
918 $x = command_oneline('write-tree');
919 if ($y ne $x) {
920 ::fatal "trees ($treeish) $y != $x\n",
921 "Something is seriously wrong...\n";
922 }
923 });
924}
925sub get_commit_parents {
927 my ($self, $log_entry, @parents) = @_;
928 my (%seen, @ret, @tmp);
929 # commit parents can be conditionally bound to a particular
930 # svn revision via: "svn_revno=commit_sha1", filter them out here:
931 foreach my $p (@parents) {
932 next unless defined $p;
933 if ($p =~ /^(\d+)=($::sha1_short)$/o) {
934 push @tmp, $2 if $1 == $log_entry->{revision};
935 } else {
936 push @tmp, $p if $p =~ /^$::sha1_short$/o;
937 }
938 }
939 if (my $cur = ::verify_ref($self->refname.'^0')) {
940 push @tmp, $cur;
941 }
942 push @tmp, $_ foreach (@{$log_entry->{parents}}, @tmp);
943 while (my $p = shift @tmp) {
944 next if $seen{$p};
945 $seen{$p} = 1;
946 push @ret, $p;
947 # MAXPARENT is defined to 16 in commit-tree.c:
948 last if @ret >= 16;
949 }
950 if (@tmp) {
951 die "r$log_entry->{revision}: No room for parents:\n\t",
952 join("\n\t", @tmp), "\n";
953 }
954 @ret;
955}
956sub full_url {
958 my ($self) = @_;
959 $self->ra->{url} . (length $self->{path} ? '/' . $self->{path} : '');
960}
961sub do_git_commit {
963 my ($self, $log_entry, @parents) = @_;
964 if (my $c = $self->rev_db_get($log_entry->{revision})) {
965 croak "$log_entry->{revision} = $c already exists! ",
966 "Why are we refetching it?\n";
967 }
968 my $author = $log_entry->{author};
969 my ($name, $email) = (defined $::users{$author} ? @{$::users{$author}}
970 : ($author, "$author\@".$self->ra->uuid));
971 $ENV{GIT_AUTHOR_NAME} = $ENV{GIT_COMMITTER_NAME} = $name;
972 $ENV{GIT_AUTHOR_EMAIL} = $ENV{GIT_COMMITTER_EMAIL} = $email;
973 $ENV{GIT_AUTHOR_DATE} = $ENV{GIT_COMMITTER_DATE} = $log_entry->{date};
974 my $tree = $log_entry->{tree};
976 if (!defined $tree) {
977 $tree = $self->tmp_index_do(sub {
978 command_oneline('write-tree') });
979 }
980 die "Tree is not a valid sha1: $tree\n" if $tree !~ /^$::sha1$/o;
981 my @exec = ('git-commit-tree', $tree);
983 foreach ($self->get_commit_parents($log_entry, @parents)) {
984 push @exec, '-p', $_;
985 }
986 defined(my $pid = open3(my $msg_fh, my $out_fh, '>&STDERR', @exec))
987 or croak $!;
988 print $msg_fh $log_entry->{log} or croak $!;
989 print $msg_fh "\ngit-svn-id: ", $self->full_url, '@',
990 $log_entry->{revision}, ' ',
991 $self->ra->uuid, "\n" or croak $!;
992 $msg_fh->flush == 0 or croak $!;
993 close $msg_fh or croak $!;
994 chomp(my $commit = do { local $/; <$out_fh> });
995 close $out_fh or croak $!;
996 waitpid $pid, 0;
997 croak $? if $?;
998 if ($commit !~ /^$::sha1$/o) {
999 die "Failed to commit, invalid sha1: $commit\n";
1000 }
1001 command_noisy('update-ref',$self->refname, $commit);
1003 $self->rev_db_set($log_entry->{revision}, $commit);
1004 $self->{last_rev} = $log_entry->{revision};
1006 $self->{last_commit} = $commit;
1007 print "r$log_entry->{revision} = $commit\n";
1008 return $commit;
1009}
1010sub revisions_eq {
1012 my ($self, $r0, $r1) = @_;
1013 return 1 if $r0 == $r1;
1014 my $nr = 0;
1015 $self->ra->get_log([$self->{path}], $r0, $r1,
1016 0, 0, 1, sub { $nr++ });
1017 return 0 if ($nr > 1);
1018 return 1;
1019}
1020sub find_parent_branch {
1022 my ($self, $paths, $rev) = @_;
1023 # look for a parent from another branch:
1025 my $i = $paths->{'/'.$self->rel_path} or return;
1026 my $branch_from = $i->copyfrom_path or return;
1027 my $r = $i->copyfrom_rev;
1028 my $repos_root = $self->ra->{repos_root};
1029 my $url = $self->ra->{url};
1030 my $new_url = $repos_root . $branch_from;
1031 print STDERR "Found possible branch point: ",
1032 "$new_url => ", $self->full_url, ", $r\n";
1033 $branch_from =~ s#^/##;
1034 my $remotes = read_all_remotes();
1035 my $gs;
1036 foreach my $repo_id (keys %$remotes) {
1037 my $u = $remotes->{$repo_id}->{url} or next;
1038 next if $url ne $u;
1039 my $fetch = $remotes->{$repo_id}->{fetch};
1040 foreach my $f (keys %$fetch) {
1041 next if $f ne $branch_from;
1042 $gs = Git::SVN->new($fetch->{$f}, $repo_id, $f);
1043 last;
1044 }
1045 last if $gs;
1046 }
1047 unless ($gs) {
1048 my $ref_id = $branch_from;
1049 $ref_id .= "\@$r" if find_ref($ref_id);
1050 # just grow a tail if we're not unique enough :x
1051 $ref_id .= '-' while find_ref($ref_id);
1052 $gs = Git::SVN->init($new_url, '', $ref_id, $ref_id);
1053 }
1054 my ($r0, $parent) = $gs->find_rev_before($r, 1);
1055 if ($::_follow_parent && (!defined $r0 || !defined $parent)) {
1056 foreach (0 .. $r) {
1057 my $log_entry = eval { $gs->do_fetch(undef, $_) };
1058 $gs->do_git_commit($log_entry) if $log_entry;
1059 }
1060 ($r0, $parent) = $gs->last_rev_commit;
1061 }
1062 if (defined $r0 && defined $parent && $gs->revisions_eq($r0, $r)) {
1063 print STDERR "Found branch parent: ($self->{ref_id}) $parent\n";
1064 command_noisy('read-tree', $parent);
1065 my $ed;
1066 if ($self->ra->can_do_switch) {
1067 # do_switch works with svn/trunk >= r22312, but that
1068 # is not included with SVN 1.4.2 (the latest version
1069 # at the moment), so we can't rely on it
1070 $self->{last_commit} = $parent;
1071 $ed = SVN::Git::Fetcher->new($self);
1072 $gs->ra->gs_do_switch($r0, $rev, $gs->{path}, 1,
1073 $self->full_url, $ed)
1074 or die "SVN connection failed somewhere...\n";
1075 } else {
1076 $ed = SVN::Git::Fetcher->new($self);
1077 $self->ra->gs_do_update($rev, $rev, $self->{path},
1078 1, $ed)
1079 or die "SVN connection failed somewhere...\n";
1080 }
1081 return $self->make_log_entry($rev, [$parent], $ed);
1082 }
1083 print STDERR "Branch parent not found...\n";
1084 return undef;
1085}
1086sub do_fetch {
1088 my ($self, $paths, $rev) = @_;
1089 my $ed;
1090 my ($last_rev, @parents);
1091 if ($self->{last_commit}) {
1092 $ed = SVN::Git::Fetcher->new($self);
1093 $last_rev = $self->{last_rev};
1094 $ed->{c} = $self->{last_commit};
1095 @parents = ($self->{last_commit});
1096 } else {
1097 $last_rev = $rev;
1098 if (my $log_entry = $self->find_parent_branch($paths, $rev)) {
1099 return $log_entry;
1100 }
1101 $ed = SVN::Git::Fetcher->new($self);
1102 }
1103 unless ($self->ra->gs_do_update($last_rev, $rev,
1104 $self->{path}, 1, $ed)) {
1105 die "SVN connection failed somewhere...\n";
1106 }
1107 $self->make_log_entry($rev, \@parents, $ed);
1108}
1109sub write_untracked {
1111 my ($self, $rev, $fh, $untracked) = @_;
1112 my $h;
1113 print $fh "r$rev\n" or croak $!;
1114 $h = $untracked->{empty};
1115 foreach (sort keys %$h) {
1116 my $act = $h->{$_} ? '+empty_dir' : '-empty_dir';
1117 print $fh " $act: ", uri_encode($_), "\n" or croak $!;
1118 warn "W: $act: $_\n";
1119 }
1120 foreach my $t (qw/dir_prop file_prop/) {
1121 $h = $untracked->{$t} or next;
1122 foreach my $path (sort keys %$h) {
1123 my $ppath = $path eq '' ? '.' : $path;
1124 foreach my $prop (sort keys %{$h->{$path}}) {
1125 next if $SKIP_PROP{$prop};
1126 my $v = $h->{$path}->{$prop};
1127 if (defined $v) {
1128 print $fh " +$t: ",
1129 uri_encode($ppath), ' ',
1130 uri_encode($prop), ' ',
1131 uri_encode($v), "\n"
1132 or croak $!;
1133 } else {
1134 print $fh " -$t: ",
1135 uri_encode($ppath), ' ',
1136 uri_encode($prop), "\n"
1137 or croak $!;
1138 }
1139 }
1140 }
1141 }
1142 foreach my $t (qw/absent_file absent_directory/) {
1143 $h = $untracked->{$t} or next;
1144 foreach my $parent (sort keys %$h) {
1145 foreach my $path (sort @{$h->{$parent}}) {
1146 print $fh " $t: ",
1147 uri_encode("$parent/$path"), "\n"
1148 or croak $!;
1149 warn "W: $t: $parent/$path ",
1150 "Insufficient permissions?\n";
1151 }
1152 }
1153 }
1154}
1155sub parse_svn_date {
1157 my $date = shift || return '+0000 1970-01-01 00:00:00';
1158 my ($Y,$m,$d,$H,$M,$S) = ($date =~ /^(\d{4})\-(\d\d)\-(\d\d)T
1159 (\d\d)\:(\d\d)\:(\d\d).\d+Z$/x) or
1160 croak "Unable to parse date: $date\n";
1161 "+0000 $Y-$m-$d $H:$M:$S";
1162}
1163sub check_author {
1165 my ($author) = @_;
1166 if (!defined $author || length $author == 0) {
1167 $author = '(no author)';
1168 }
1169 if (defined $::_authors && ! defined $::users{$author}) {
1170 die "Author: $author not defined in $::_authors file\n";
1171 }
1172 $author;
1173}
1174sub make_log_entry {
1176 my ($self, $rev, $parents, $untracked) = @_;
1177 my $rp = $self->ra->rev_proplist($rev);
1178 my %log_entry = ( parents => $parents || [], revision => $rev,
1179 revprops => $rp, log => '');
1180 open my $un, '>>', "$self->{dir}/unhandled.log" or croak $!;
1181 $self->write_untracked($rev, $un, $untracked);
1182 foreach (sort keys %$rp) {
1183 my $v = $rp->{$_};
1184 if (/^svn:(author|date|log)$/) {
1185 $log_entry{$1} = $v;
1186 } else {
1187 print $un " rev_prop: ", uri_encode($_), ' ',
1188 uri_encode($v), "\n";
1189 }
1190 }
1191 close $un or croak $!;
1192 $log_entry{date} = parse_svn_date($log_entry{date});
1193 $log_entry{author} = check_author($log_entry{author});
1194 $log_entry{log} .= "\n";
1195 \%log_entry;
1196}
1197sub fetch {
1199 my ($self, @parents) = @_;
1200 my ($last_rev, $last_commit) = $self->last_rev_commit;
1201 my ($base, $head) = $self->parse_revision($last_rev);
1202 return if ($base > $head);
1203 if (defined $last_commit) {
1204 $self->assert_index_clean($last_commit);
1205 }
1206 my $inc = 1000;
1207 my ($min, $max) = ($base, $head < $base + $inc ? $head : $base + $inc);
1208 my $err_handler = $SVN::Error::handler;
1209 $SVN::Error::handler = \&skip_unknown_revs;
1210 while (1) {
1211 my @revs;
1212 $self->ra->get_log([''], $min, $max, 0, 1, 1, sub {
1213 my ($paths, $rev, $author, $date, $log) = @_;
1214 push @revs, [ $paths, $rev ] });
1215 foreach (@revs) {
1216 my $log_entry = $self->do_fetch(@$_);
1217 $self->do_git_commit($log_entry, @parents);
1218 }
1219 last if $max >= $head;
1220 $min = $max + 1;
1221 $max += $inc;
1222 $max = $head if ($max > $head);
1223 }
1224 $SVN::Error::handler = $err_handler;
1225}
1226sub set_tree_cb {
1228 my ($self, $log_entry, $tree, $rev, $date, $author) = @_;
1229 # TODO: enable and test optimized commits:
1230 if (0 && $rev == ($self->{last_rev} + 1)) {
1231 $log_entry->{revision} = $rev;
1232 $log_entry->{author} = $author;
1233 $self->do_git_commit($log_entry, "$rev=$tree");
1234 } else {
1235 $self->fetch("$rev=$tree");
1236 }
1237}
1238sub set_tree {
1240 my ($self, $tree) = (shift, shift);
1241 my $log_entry = ::get_commit_entry($tree);
1242 unless ($self->{last_rev}) {
1243 fatal("Must have an existing revision to commit\n");
1244 }
1245 my $pool = SVN::Pool->new;
1246 my $ed = SVN::Git::Editor->new({ r => $self->{last_rev},
1247 ra => $self->ra->dup,
1248 svn_path => $self->ra->{svn_path}
1249 },
1250 $self->ra->get_commit_editor(
1251 $log_entry->{log}, sub {
1252 $self->set_tree_cb($log_entry,
1253 $tree, @_);
1254 }),
1255 $pool);
1256 my $mods = $ed->apply_diff($self->{last_commit}, $tree);
1257 if (@$mods == 0) {
1258 print "No changes\nr$self->{last_rev} = $tree\n";
1259 }
1260 $pool->clear;
1261}
1262sub skip_unknown_revs {
1264 my ($err) = @_;
1265 my $errno = $err->apr_err();
1266 # Maybe the branch we're tracking didn't
1267 # exist when the repo started, so it's
1268 # not an error if it doesn't, just continue
1269 #
1270 # Wonderfully consistent library, eh?
1271 # 160013 - svn:// and file://
1272 # 175002 - http(s)://
1273 # 175007 - http(s):// (this repo required authorization, too...)
1274 # More codes may be discovered later...
1275 if ($errno == 175007 || $errno == 175002 || $errno == 160013) {
1276 return;
1277 }
1278 croak "Error from SVN, ($errno): ", $err->expanded_message,"\n";
1279}
1280# rev_db:
1282# Tie::File seems to be prone to offset errors if revisions get sparse,
1283# it's not that fast, either. Tie::File is also not in Perl 5.6. So
1284# one of my favorite modules is out :< Next up would be one of the DBM
1285# modules, but I'm not sure which is most portable... So I'll just
1286# go with something that's plain-text, but still capable of
1287# being randomly accessed. So here's my ultra-simple fixed-width
1288# database. All records are 40 characters + "\n", so it's easy to seek
1289# to a revision: (41 * rev) is the byte offset.
1290# A record of 40 0s denotes an empty revision.
1291# And yes, it's still pretty fast (faster than Tie::File).
1292sub rev_db_set {
1294 my ($self, $rev, $commit) = @_;
1295 length $commit == 40 or croak "arg3 must be a full SHA1 hexsum\n";
1296 open my $fh, '+<', $self->{db_path} or croak $!;
1297 my $offset = $rev * 41;
1298 # assume that append is the common case:
1299 seek $fh, 0, 2 or croak $!;
1300 my $pos = tell $fh;
1301 if ($pos < $offset) {
1302 print $fh (('0' x 40),"\n") x (($offset - $pos) / 41)
1303 or croak $!;
1304 }
1305 seek $fh, $offset, 0 or croak $!;
1306 print $fh $commit,"\n" or croak $!;
1307 close $fh or croak $!;
1308}
1309sub rev_db_get {
1311 my ($self, $rev) = @_;
1312 my $ret;
1313 my $offset = $rev * 41;
1314 open my $fh, '<', $self->{db_path} or croak $!;
1315 if (seek $fh, $offset, 0) {
1316 $ret = readline $fh;
1317 if (defined $ret) {
1318 chomp $ret;
1319 $ret = undef if ($ret =~ /^0{40}$/);
1320 }
1321 }
1322 close $fh or croak $!;
1323 $ret;
1324}
1325sub find_rev_before {
1327 my ($self, $rev, $eq_ok) = @_;
1328 --$rev unless $eq_ok;
1329 while ($rev > 0) {
1330 if (my $c = $self->rev_db_get($rev)) {
1331 return ($rev, $c);
1332 }
1333 --$rev;
1334 }
1335 return (undef, undef);
1336}
1337sub _new {
1339 my ($class, $repo_id, $ref_id, $path) = @_;
1340 unless (defined $repo_id && length $repo_id) {
1341 $repo_id = $Git::SVN::default_repo_id;
1342 }
1343 unless (defined $ref_id && length $ref_id) {
1344 $_[2] = $ref_id = $repo_id;
1345 }
1346 $_[1] = $repo_id = sanitize_remote_name($repo_id);
1347 my $dir = "$ENV{GIT_DIR}/svn/$ref_id";
1348 $_[3] = $path = '' unless (defined $path);
1349 bless { ref_id => $ref_id, dir => $dir, index => "$dir/index",
1350 path => $path,
1351 db_path => "$dir/.rev_db", repo_id => $repo_id }, $class;
1352}
1353sub uri_encode {
1355 my ($f) = @_;
1356 $f =~ s#([^a-zA-Z0-9\*!\:_\./\-])#uc sprintf("%%%02x",ord($1))#eg;
1357 $f
1358}
1359package Git::SVN::Prompt;
1361use strict;
1362use warnings;
1363require SVN::Core;
1364use vars qw/$_no_auth_cache $_username/;
1365sub simple {
1367 my ($cred, $realm, $default_username, $may_save, $pool) = @_;
1368 $may_save = undef if $_no_auth_cache;
1369 $default_username = $_username if defined $_username;
1370 if (defined $default_username && length $default_username) {
1371 if (defined $realm && length $realm) {
1372 print STDERR "Authentication realm: $realm\n";
1373 STDERR->flush;
1374 }
1375 $cred->username($default_username);
1376 } else {
1377 username($cred, $realm, $may_save, $pool);
1378 }
1379 $cred->password(_read_password("Password for '" .
1380 $cred->username . "': ", $realm));
1381 $cred->may_save($may_save);
1382 $SVN::_Core::SVN_NO_ERROR;
1383}
1384sub ssl_server_trust {
1386 my ($cred, $realm, $failures, $cert_info, $may_save, $pool) = @_;
1387 $may_save = undef if $_no_auth_cache;
1388 print STDERR "Error validating server certificate for '$realm':\n";
1389 if ($failures & $SVN::Auth::SSL::UNKNOWNCA) {
1390 print STDERR " - The certificate is not issued by a trusted ",
1391 "authority. Use the\n",
1392 " fingerprint to validate the certificate manually!\n";
1393 }
1394 if ($failures & $SVN::Auth::SSL::CNMISMATCH) {
1395 print STDERR " - The certificate hostname does not match.\n";
1396 }
1397 if ($failures & $SVN::Auth::SSL::NOTYETVALID) {
1398 print STDERR " - The certificate is not yet valid.\n";
1399 }
1400 if ($failures & $SVN::Auth::SSL::EXPIRED) {
1401 print STDERR " - The certificate has expired.\n";
1402 }
1403 if ($failures & $SVN::Auth::SSL::OTHER) {
1404 print STDERR " - The certificate has an unknown error.\n";
1405 }
1406 printf STDERR
1407 "Certificate information:\n".
1408 " - Hostname: %s\n".
1409 " - Valid: from %s until %s\n".
1410 " - Issuer: %s\n".
1411 " - Fingerprint: %s\n",
1412 map $cert_info->$_, qw(hostname valid_from valid_until
1413 issuer_dname fingerprint);
1414 my $choice;
1415prompt:
1416 print STDERR $may_save ?
1417 "(R)eject, accept (t)emporarily or accept (p)ermanently? " :
1418 "(R)eject or accept (t)emporarily? ";
1419 STDERR->flush;
1420 $choice = lc(substr(<STDIN> || 'R', 0, 1));
1421 if ($choice =~ /^t$/i) {
1422 $cred->may_save(undef);
1423 } elsif ($choice =~ /^r$/i) {
1424 return -1;
1425 } elsif ($may_save && $choice =~ /^p$/i) {
1426 $cred->may_save($may_save);
1427 } else {
1428 goto prompt;
1429 }
1430 $cred->accepted_failures($failures);
1431 $SVN::_Core::SVN_NO_ERROR;
1432}
1433sub ssl_client_cert {
1435 my ($cred, $realm, $may_save, $pool) = @_;
1436 $may_save = undef if $_no_auth_cache;
1437 print STDERR "Client certificate filename: ";
1438 STDERR->flush;
1439 chomp(my $filename = <STDIN>);
1440 $cred->cert_file($filename);
1441 $cred->may_save($may_save);
1442 $SVN::_Core::SVN_NO_ERROR;
1443}
1444sub ssl_client_cert_pw {
1446 my ($cred, $realm, $may_save, $pool) = @_;
1447 $may_save = undef if $_no_auth_cache;
1448 $cred->password(_read_password("Password: ", $realm));
1449 $cred->may_save($may_save);
1450 $SVN::_Core::SVN_NO_ERROR;
1451}
1452sub username {
1454 my ($cred, $realm, $may_save, $pool) = @_;
1455 $may_save = undef if $_no_auth_cache;
1456 if (defined $realm && length $realm) {
1457 print STDERR "Authentication realm: $realm\n";
1458 }
1459 my $username;
1460 if (defined $_username) {
1461 $username = $_username;
1462 } else {
1463 print STDERR "Username: ";
1464 STDERR->flush;
1465 chomp($username = <STDIN>);
1466 }
1467 $cred->username($username);
1468 $cred->may_save($may_save);
1469 $SVN::_Core::SVN_NO_ERROR;
1470}
1471sub _read_password {
1473 my ($prompt, $realm) = @_;
1474 print STDERR $prompt;
1475 STDERR->flush;
1476 require Term::ReadKey;
1477 Term::ReadKey::ReadMode('noecho');
1478 my $password = '';
1479 while (defined(my $key = Term::ReadKey::ReadKey(0))) {
1480 last if $key =~ /[\012\015]/; # \n\r
1481 $password .= $key;
1482 }
1483 Term::ReadKey::ReadMode('restore');
1484 print STDERR "\n";
1485 STDERR->flush;
1486 $password;
1487}
1488package main;
1490sub uri_encode {
1492 my ($f) = @_;
1493 $f =~ s#([^a-zA-Z0-9\*!\:_\./\-])#uc sprintf("%%%02x",ord($1))#eg;
1494 $f
1495}
1496sub uri_decode {
1498 my ($f) = @_;
1499 $f =~ tr/+/ /;
1500 $f =~ s/%([A-F0-9]{2})/chr hex($1)/ge;
1501 $f
1502}
1503{
1505 my $kill_stupid_warnings = $SVN::Node::none.$SVN::Node::file.
1506 $SVN::Node::dir.$SVN::Node::unknown.
1507 $SVN::Node::none.$SVN::Node::file.
1508 $SVN::Node::dir.$SVN::Node::unknown.
1509 $SVN::Auth::SSL::CNMISMATCH.
1510 $SVN::Auth::SSL::NOTYETVALID.
1511 $SVN::Auth::SSL::EXPIRED.
1512 $SVN::Auth::SSL::UNKNOWNCA.
1513 $SVN::Auth::SSL::OTHER;
1514}
1515package SVN::Git::Fetcher;
1517use vars qw/@ISA/;
1518use strict;
1519use warnings;
1520use Carp qw/croak/;
1521use IO::File qw//;
1522# file baton members: path, mode_a, mode_b, pool, fh, blob, base
1524sub new {
1525 my ($class, $git_svn) = @_;
1526 my $self = SVN::Delta::Editor->new;
1527 bless $self, $class;
1528 $self->{c} = $git_svn->{last_commit} if exists $git_svn->{last_commit};
1529 if (length $git_svn->{path}) {
1530 $self->{path_strip} = qr/\Q$git_svn->{path}\E\/?/;
1531 }
1532 $self->{empty} = {};
1533 $self->{dir_prop} = {};
1534 $self->{file_prop} = {};
1535 $self->{absent_dir} = {};
1536 $self->{absent_file} = {};
1537 ($self->{gui}, $self->{ctx}) = $git_svn->tmp_index_do(
1538 sub { command_input_pipe(qw/update-index -z --index-info/) } );
1539 require Digest::MD5;
1540 $self;
1541}
1542sub open_root {
1544 { path => '' };
1545}
1546sub open_directory {
1548 my ($self, $path, $pb, $rev) = @_;
1549 { path => $path };
1550}
1551sub git_path {
1553 my ($self, $path) = @_;
1554 $path =~ s!$self->{path_strip}!! if $self->{path_strip};
1555 $path;
1556}
1557sub delete_entry {
1559 my ($self, $path, $rev, $pb) = @_;
1560 my $gui = $self->{gui};
1561 my $gpath = $self->git_path($path);
1563 # remove entire directories.
1564 if (command('ls-tree', $self->{c}, '--', $gpath) =~ /^040000 tree/) {
1565 my ($ls, $ctx) = command_output_pipe(qw/ls-tree
1566 -r --name-only -z/,
1567 $self->{c}, '--', $gpath);
1568 local $/ = "\0";
1569 while (<$ls>) {
1570 print $gui '0 ',0 x 40,"\t",$_ or croak $!;
1571 print "\tD\t$_\n" unless $self->{q};
1572 }
1573 print "\tD\t$gpath/\n" unless $self->{q};
1574 command_close_pipe($ls, $ctx);
1575 $self->{empty}->{$path} = 0
1576 } else {
1577 print $gui '0 ',0 x 40,"\t",$gpath,"\0" or croak $!;
1578 print "\tD\t$gpath\n" unless $self->{q};
1579 }
1580 undef;
1581}
1582sub open_file {
1584 my ($self, $path, $pb, $rev) = @_;
1585 my $gpath = $self->git_path($path);
1586 my ($mode, $blob) = (command('ls-tree', $self->{c}, '--', $gpath)
1587 =~ /^(\d{6}) blob ([a-f\d]{40})\t/);
1588 unless (defined $mode && defined $blob) {
1589 die "$path was not found in commit $self->{c} (r$rev)\n";
1590 }
1591 { path => $path, mode_a => $mode, mode_b => $mode, blob => $blob,
1592 pool => SVN::Pool->new, action => 'M' };
1593}
1594sub add_file {
1596 my ($self, $path, $pb, $cp_path, $cp_rev) = @_;
1597 my ($dir, $file) = ($path =~ m#^(.*?)/?([^/]+)$#);
1598 delete $self->{empty}->{$dir};
1599 { path => $path, mode_a => 100644, mode_b => 100644,
1600 pool => SVN::Pool->new, action => 'A' };
1601}
1602sub add_directory {
1604 my ($self, $path, $cp_path, $cp_rev) = @_;
1605 my ($dir, $file) = ($path =~ m#^(.*?)/?([^/]+)$#);
1606 delete $self->{empty}->{$dir};
1607 $self->{empty}->{$path} = 1;
1608 { path => $path };
1609}
1610sub change_dir_prop {
1612 my ($self, $db, $prop, $value) = @_;
1613 $self->{dir_prop}->{$db->{path}} ||= {};
1614 $self->{dir_prop}->{$db->{path}}->{$prop} = $value;
1615 undef;
1616}
1617sub absent_directory {
1619 my ($self, $path, $pb) = @_;
1620 $self->{absent_dir}->{$pb->{path}} ||= [];
1621 push @{$self->{absent_dir}->{$pb->{path}}}, $path;
1622 undef;
1623}
1624sub absent_file {
1626 my ($self, $path, $pb) = @_;
1627 $self->{absent_file}->{$pb->{path}} ||= [];
1628 push @{$self->{absent_file}->{$pb->{path}}}, $path;
1629 undef;
1630}
1631sub change_file_prop {
1633 my ($self, $fb, $prop, $value) = @_;
1634 if ($prop eq 'svn:executable') {
1635 if ($fb->{mode_b} != 120000) {
1636 $fb->{mode_b} = defined $value ? 100755 : 100644;
1637 }
1638 } elsif ($prop eq 'svn:special') {
1639 $fb->{mode_b} = defined $value ? 120000 : 100644;
1640 } else {
1641 $self->{file_prop}->{$fb->{path}} ||= {};
1642 $self->{file_prop}->{$fb->{path}}->{$prop} = $value;
1643 }
1644 undef;
1645}
1646sub apply_textdelta {
1648 my ($self, $fb, $exp) = @_;
1649 my $fh = IO::File->new_tmpfile;
1650 $fh->autoflush(1);
1651 # $fh gets auto-closed() by SVN::TxDelta::apply(),
1652 # (but $base does not,) so dup() it for reading in close_file
1653 open my $dup, '<&', $fh or croak $!;
1654 my $base = IO::File->new_tmpfile;
1655 $base->autoflush(1);
1656 if ($fb->{blob}) {
1657 defined (my $pid = fork) or croak $!;
1658 if (!$pid) {
1659 open STDOUT, '>&', $base or croak $!;
1660 print STDOUT 'link ' if ($fb->{mode_a} == 120000);
1661 exec qw/git-cat-file blob/, $fb->{blob} or croak $!;
1662 }
1663 waitpid $pid, 0;
1664 croak $? if $?;
1665 if (defined $exp) {
1667 seek $base, 0, 0 or croak $!;
1668 my $md5 = Digest::MD5->new;
1669 $md5->addfile($base);
1670 my $got = $md5->hexdigest;
1671 die "Checksum mismatch: $fb->{path} $fb->{blob}\n",
1672 "expected: $exp\n",
1673 " got: $got\n" if ($got ne $exp);
1674 }
1675 }
1676 seek $base, 0, 0 or croak $!;
1677 $fb->{fh} = $dup;
1678 $fb->{base} = $base;
1679 [ SVN::TxDelta::apply($base, $fh, undef, $fb->{path}, $fb->{pool}) ];
1680}
1681sub close_file {
1683 my ($self, $fb, $exp) = @_;
1684 my $hash;
1685 my $path = $self->git_path($fb->{path});
1686 if (my $fh = $fb->{fh}) {
1687 seek($fh, 0, 0) or croak $!;
1688 my $md5 = Digest::MD5->new;
1689 $md5->addfile($fh);
1690 my $got = $md5->hexdigest;
1691 die "Checksum mismatch: $path\n",
1692 "expected: $exp\n got: $got\n" if ($got ne $exp);
1693 seek($fh, 0, 0) or croak $!;
1694 if ($fb->{mode_b} == 120000) {
1695 read($fh, my $buf, 5) == 5 or croak $!;
1696 $buf eq 'link ' or die "$path has mode 120000",
1697 "but is not a link\n";
1698 }
1699 defined(my $pid = open my $out,'-|') or die "Can't fork: $!\n";
1700 if (!$pid) {
1701 open STDIN, '<&', $fh or croak $!;
1702 exec qw/git-hash-object -w --stdin/ or croak $!;
1703 }
1704 chomp($hash = do { local $/; <$out> });
1705 close $out or croak $!;
1706 close $fh or croak $!;
1707 $hash =~ /^[a-f\d]{40}$/ or die "not a sha1: $hash\n";
1708 close $fb->{base} or croak $!;
1709 } else {
1710 $hash = $fb->{blob} or die "no blob information\n";
1711 }
1712 $fb->{pool}->clear;
1713 my $gui = $self->{gui};
1714 print $gui "$fb->{mode_b} $hash\t$path\0" or croak $!;
1715 print "\t$fb->{action}\t$path\n" if $fb->{action} && ! $self->{q};
1716 undef;
1717}
1718sub abort_edit {
1720 my $self = shift;
1721 eval { command_close_pipe($self->{gui}, $self->{ctx}) };
1722 $self->SUPER::abort_edit(@_);
1723}
1724sub close_edit {
1726 my $self = shift;
1727 command_close_pipe($self->{gui}, $self->{ctx});
1728 $self->{git_commit_ok} = 1;
1729 $self->SUPER::close_edit(@_);
1730}
1731package SVN::Git::Editor;
1733use vars qw/@ISA/;
1734use strict;
1735use warnings;
1736use Carp qw/croak/;
1737use IO::File;
1738sub new {
1740 my $class = shift;
1741 my $git_svn = shift;
1742 my $self = SVN::Delta::Editor->new(@_);
1743 bless $self, $class;
1744 foreach (qw/svn_path r ra/) {
1745 die "$_ required!\n" unless (defined $git_svn->{$_});
1746 $self->{$_} = $git_svn->{$_};
1747 }
1748 $self->{pool} = SVN::Pool->new;
1749 $self->{bat} = { '' => $self->open_root($self->{r}, $self->{pool}) };
1750 $self->{rm} = { };
1751 require Digest::MD5;
1752 return $self;
1753}
1754sub split_path {
1756 return ($_[0] =~ m#^(.*?)/?([^/]+)$#);
1757}
1758sub repo_path {
1760 (defined $_[1] && length $_[1]) ? $_[1] : ''
1761}
1762sub url_path {
1764 my ($self, $path) = @_;
1765 $self->{ra}->{url} . '/' . $self->repo_path($path);
1766}
1767sub rmdirs {
1769 my ($self, $tree_b) = @_;
1770 my $rm = $self->{rm};
1771 delete $rm->{''}; # we never delete the url we're tracking
1772 return unless %$rm;
1773 foreach (keys %$rm) {
1775 my @d = split m#/#, $_;
1776 my $c = shift @d;
1777 $rm->{$c} = 1;
1778 while (@d) {
1779 $c .= '/' . shift @d;
1780 $rm->{$c} = 1;
1781 }
1782 }
1783 delete $rm->{$self->{svn_path}};
1784 delete $rm->{''}; # we never delete the url we're tracking
1785 return unless %$rm;
1786 my ($fh, $ctx) = command_output_pipe(
1788 qw/ls-tree --name-only -r -z/, $tree_b);
1789 local $/ = "\0";
1790 while (<$fh>) {
1791 chomp;
1792 my @dn = split m#/#, $_;
1793 while (pop @dn) {
1794 delete $rm->{join '/', @dn};
1795 }
1796 unless (%$rm) {
1797 close $fh;
1798 return;
1799 }
1800 }
1801 command_close_pipe($fh, $ctx);
1802 my ($r, $p, $bat) = ($self->{r}, $self->{pool}, $self->{bat});
1804 foreach my $d (sort { $b =~ tr#/#/# <=> $a =~ tr#/#/# } keys %$rm) {
1805 $self->close_directory($bat->{$d}, $p);
1806 my ($dn) = ($d =~ m#^(.*?)/?(?:[^/]+)$#);
1807 print "\tD+\t$d/\n" unless $::_q;
1808 $self->SUPER::delete_entry($d, $r, $bat->{$dn}, $p);
1809 delete $bat->{$d};
1810 }
1811}
1812sub open_or_add_dir {
1814 my ($self, $full_path, $baton) = @_;
1815 my $t = $self->{ra}->check_path($full_path, $self->{r});
1816 if ($t == $SVN::Node::none) {
1817 return $self->add_directory($full_path, $baton,
1818 undef, -1, $self->{pool});
1819 } elsif ($t == $SVN::Node::dir) {
1820 return $self->open_directory($full_path, $baton,
1821 $self->{r}, $self->{pool});
1822 }
1823 print STDERR "$full_path already exists in repository at ",
1824 "r$self->{r} and it is not a directory (",
1825 ($t == $SVN::Node::file ? 'file' : 'unknown'),"/$t)\n";
1826 exit 1;
1827}
1828sub ensure_path {
1830 my ($self, $path) = @_;
1831 my $bat = $self->{bat};
1832 $path = $self->repo_path($path);
1833 return $bat->{''} unless (length $path);
1834 my @p = split m#/+#, $path;
1835 my $c = shift @p;
1836 $bat->{$c} ||= $self->open_or_add_dir($c, $bat->{''});
1837 while (@p) {
1838 my $c0 = $c;
1839 $c .= '/' . shift @p;
1840 $bat->{$c} ||= $self->open_or_add_dir($c, $bat->{$c0});
1841 }
1842 return $bat->{$c};
1843}
1844sub A {
1846 my ($self, $m) = @_;
1847 my ($dir, $file) = split_path($m->{file_b});
1848 my $pbat = $self->ensure_path($dir);
1849 my $fbat = $self->add_file($self->repo_path($m->{file_b}), $pbat,
1850 undef, -1);
1851 print "\tA\t$m->{file_b}\n" unless $::_q;
1852 $self->chg_file($fbat, $m);
1853 $self->close_file($fbat,undef,$self->{pool});
1854}
1855sub C {
1857 my ($self, $m) = @_;
1858 my ($dir, $file) = split_path($m->{file_b});
1859 my $pbat = $self->ensure_path($dir);
1860 my $fbat = $self->add_file($self->repo_path($m->{file_b}), $pbat,
1861 $self->url_path($m->{file_a}), $self->{r});
1862 print "\tC\t$m->{file_a} => $m->{file_b}\n" unless $::_q;
1863 $self->chg_file($fbat, $m);
1864 $self->close_file($fbat,undef,$self->{pool});
1865}
1866sub delete_entry {
1868 my ($self, $path, $pbat) = @_;
1869 my $rpath = $self->repo_path($path);
1870 my ($dir, $file) = split_path($rpath);
1871 $self->{rm}->{$dir} = 1;
1872 $self->SUPER::delete_entry($rpath, $self->{r}, $pbat, $self->{pool});
1873}
1874sub R {
1876 my ($self, $m) = @_;
1877 my ($dir, $file) = split_path($m->{file_b});
1878 my $pbat = $self->ensure_path($dir);
1879 my $fbat = $self->add_file($self->repo_path($m->{file_b}), $pbat,
1880 $self->url_path($m->{file_a}), $self->{r});
1881 print "\tR\t$m->{file_a} => $m->{file_b}\n" unless $::_q;
1882 $self->chg_file($fbat, $m);
1883 $self->close_file($fbat,undef,$self->{pool});
1884 ($dir, $file) = split_path($m->{file_a});
1886 $pbat = $self->ensure_path($dir);
1887 $self->delete_entry($m->{file_a}, $pbat);
1888}
1889sub M {
1891 my ($self, $m) = @_;
1892 my ($dir, $file) = split_path($m->{file_b});
1893 my $pbat = $self->ensure_path($dir);
1894 my $fbat = $self->open_file($self->repo_path($m->{file_b}),
1895 $pbat,$self->{r},$self->{pool});
1896 print "\t$m->{chg}\t$m->{file_b}\n" unless $::_q;
1897 $self->chg_file($fbat, $m);
1898 $self->close_file($fbat,undef,$self->{pool});
1899}
1900sub T { shift->M(@_) }
1902sub change_file_prop {
1904 my ($self, $fbat, $pname, $pval) = @_;
1905 $self->SUPER::change_file_prop($fbat, $pname, $pval, $self->{pool});
1906}
1907sub chg_file {
1909 my ($self, $fbat, $m) = @_;
1910 if ($m->{mode_b} =~ /755$/ && $m->{mode_a} !~ /755$/) {
1911 $self->change_file_prop($fbat,'svn:executable','*');
1912 } elsif ($m->{mode_b} !~ /755$/ && $m->{mode_a} =~ /755$/) {
1913 $self->change_file_prop($fbat,'svn:executable',undef);
1914 }
1915 my $fh = IO::File->new_tmpfile or croak $!;
1916 if ($m->{mode_b} =~ /^120/) {
1917 print $fh 'link ' or croak $!;
1918 $self->change_file_prop($fbat,'svn:special','*');
1919 } elsif ($m->{mode_a} =~ /^120/ && $m->{mode_b} !~ /^120/) {
1920 $self->change_file_prop($fbat,'svn:special',undef);
1921 }
1922 defined(my $pid = fork) or croak $!;
1923 if (!$pid) {
1924 open STDOUT, '>&', $fh or croak $!;
1925 exec qw/git-cat-file blob/, $m->{sha1_b} or croak $!;
1926 }
1927 waitpid $pid, 0;
1928 croak $? if $?;
1929 $fh->flush == 0 or croak $!;
1930 seek $fh, 0, 0 or croak $!;
1931 my $md5 = Digest::MD5->new;
1933 $md5->addfile($fh) or croak $!;
1934 seek $fh, 0, 0 or croak $!;
1935 my $exp = $md5->hexdigest;
1937 my $pool = SVN::Pool->new;
1938 my $atd = $self->apply_textdelta($fbat, undef, $pool);
1939 my $got = SVN::TxDelta::send_stream($fh, @$atd, $pool);
1940 die "Checksum mismatch\nexpected: $exp\ngot: $got\n" if ($got ne $exp);
1941 $pool->clear;
1942 close $fh or croak $!;
1944}
1945sub D {
1947 my ($self, $m) = @_;
1948 my ($dir, $file) = split_path($m->{file_b});
1949 my $pbat = $self->ensure_path($dir);
1950 print "\tD\t$m->{file_b}\n" unless $::_q;
1951 $self->delete_entry($m->{file_b}, $pbat);
1952}
1953sub close_edit {
1955 my ($self) = @_;
1956 my ($p,$bat) = ($self->{pool}, $self->{bat});
1957 foreach (sort { $b =~ tr#/#/# <=> $a =~ tr#/#/# } keys %$bat) {
1958 $self->close_directory($bat->{$_}, $p);
1959 }
1960 $self->SUPER::close_edit($p);
1961 $p->clear;
1962}
1963sub abort_edit {
1965 my ($self) = @_;
1966 $self->SUPER::abort_edit($self->{pool});
1967 $self->{pool}->clear;
1968}
1969# this drives the editor
1971sub apply_diff {
1972 my ($self, $tree_a, $tree_b) = @_;
1973 my @diff_tree = qw(diff-tree -z -r);
1974 if ($::_cp_similarity) {
1975 push @diff_tree, "-C$::_cp_similarity";
1976 } else {
1977 push @diff_tree, '-C';
1978 }
1979 push @diff_tree, '--find-copies-harder' if $::_find_copies_harder;
1980 push @diff_tree, "-l$::_l" if defined $::_l;
1981 push @diff_tree, $tree_a, $tree_b;
1982 my ($diff_fh, $ctx) = command_output_pipe(@diff_tree);
1983 my $nl = $/;
1984 local $/ = "\0";
1985 my $state = 'meta';
1986 my @mods;
1987 while (<$diff_fh>) {
1988 chomp $_; # this gets rid of the trailing "\0"
1989 if ($state eq 'meta' && /^:(\d{6})\s(\d{6})\s
1990 $::sha1\s($::sha1)\s
1991 ([MTCRAD])\d*$/xo) {
1992 push @mods, { mode_a => $1, mode_b => $2,
1993 sha1_b => $3, chg => $4 };
1994 if ($4 =~ /^(?:C|R)$/) {
1995 $state = 'file_a';
1996 } else {
1997 $state = 'file_b';
1998 }
1999 } elsif ($state eq 'file_a') {
2000 my $x = $mods[$#mods] or croak "Empty array\n";
2001 if ($x->{chg} !~ /^(?:C|R)$/) {
2002 croak "Error parsing $_, $x->{chg}\n";
2003 }
2004 $x->{file_a} = $_;
2005 $state = 'file_b';
2006 } elsif ($state eq 'file_b') {
2007 my $x = $mods[$#mods] or croak "Empty array\n";
2008 if (exists $x->{file_a} && $x->{chg} !~ /^(?:C|R)$/) {
2009 croak "Error parsing $_, $x->{chg}\n";
2010 }
2011 if (!exists $x->{file_a} && $x->{chg} =~ /^(?:C|R)$/) {
2012 croak "Error parsing $_, $x->{chg}\n";
2013 }
2014 $x->{file_b} = $_;
2015 $state = 'meta';
2016 } else {
2017 croak "Error parsing $_\n";
2018 }
2019 }
2020 command_close_pipe($diff_fh, $ctx);
2021 $/ = $nl;
2022 my %o = ( D => 1, R => 0, C => -1, A => 3, M => 3, T => 3 );
2024 foreach my $m (sort { $o{$a->{chg}} <=> $o{$b->{chg}} } @mods) {
2025 my $f = $m->{chg};
2026 if (defined $o{$f}) {
2027 $self->$f($m);
2028 } else {
2029 fatal("Invalid change type: $f\n");
2030 }
2031 }
2032 $self->rmdirs($tree_b) if $::_rmdir;
2033 if (@mods == 0) {
2034 $self->abort_edit;
2035 } else {
2036 $self->close_edit;
2037 }
2038 \@mods;
2039}
2040package Git::SVN::Ra;
2042use vars qw/@ISA $config_dir/;
2043use strict;
2044use warnings;
2045my ($can_do_switch);
2046my %RA;
2047BEGIN {
2049 # enforce temporary pool usage for some simple functions
2050 my $e;
2051 foreach (qw/get_latest_revnum rev_proplist get_file
2052 check_path get_dir get_uuid get_repos_root/) {
2053 $e .= "sub $_ {
2054 my \$self = shift;
2055 my \$pool = SVN::Pool->new;
2056 my \@ret = \$self->SUPER::$_(\@_,\$pool);
2057 \$pool->clear;
2058 wantarray ? \@ret : \$ret[0]; }\n";
2059 }
2060 eval $e;
2061}
2062sub new {
2064 my ($class, $url) = @_;
2065 $url =~ s!/+$!!;
2066 return $RA{$url} if $RA{$url};
2067 SVN::_Core::svn_config_ensure($config_dir, undef);
2069 my ($baton, $callbacks) = SVN::Core::auth_open_helper([
2070 SVN::Client::get_simple_provider(),
2071 SVN::Client::get_ssl_server_trust_file_provider(),
2072 SVN::Client::get_simple_prompt_provider(
2073 \&Git::SVN::Prompt::simple, 2),
2074 SVN::Client::get_ssl_client_cert_prompt_provider(
2075 \&Git::SVN::Prompt::ssl_client_cert, 2),
2076 SVN::Client::get_ssl_client_cert_pw_prompt_provider(
2077 \&Git::SVN::Prompt::ssl_client_cert_pw, 2),
2078 SVN::Client::get_username_provider(),
2079 SVN::Client::get_ssl_server_trust_prompt_provider(
2080 \&Git::SVN::Prompt::ssl_server_trust),
2081 SVN::Client::get_username_prompt_provider(
2082 \&Git::SVN::Prompt::username, 2),
2083 ]);
2084 my $config = SVN::Core::config_get_config($config_dir);
2085 my $self = SVN::Ra->new(url => $url, auth => $baton,
2086 config => $config,
2087 pool => SVN::Pool->new,
2088 auth_provider_callbacks => $callbacks);
2089 $self->{svn_path} = $url;
2090 $self->{repos_root} = $self->get_repos_root;
2091 $self->{svn_path} =~ s#^\Q$self->{repos_root}\E/*##;
2092 $RA{$url} = bless $self, $class;
2093}
2094sub DESTROY {
2096 # do not call the real DESTROY since we store ourselves in %RA
2097}
2098sub dup {
2100 my ($self) = @_;
2101 my $dup = SVN::Ra->new(pool => SVN::Pool->new,
2102 map { $_ => $self->{$_} } qw/config url
2103 auth auth_provider_callbacks repos_root svn_path/);
2104 bless $dup, ref $self;
2105}
2106sub get_log {
2108 my ($self, @args) = @_;
2109 my $pool = SVN::Pool->new;
2110 $args[4]-- if $args[4] && ! $::_follow_parent;
2111 splice(@args, 3, 1) if ($SVN::Core::VERSION le '1.2.0');
2112 my $ret = $self->SUPER::get_log(@args, $pool);
2113 $pool->clear;
2114 $ret;
2115}
2116sub get_commit_editor {
2118 my ($self, $log, $cb, $pool) = @_;
2119 my @lock = $SVN::Core::VERSION ge '1.2.0' ? (undef, 0) : ();
2120 $self->SUPER::get_commit_editor($log, $cb, @lock, $pool);
2121}
2122sub uuid {
2124 my ($self) = @_;
2125 $self->{uuid} ||= $self->get_uuid;
2126}
2127sub gs_do_update {
2129 my ($self, $rev_a, $rev_b, $path, $recurse, $editor) = @_;
2130 my $pool = SVN::Pool->new;
2131 my $reporter = $self->do_update($rev_b, $path, $recurse,
2132 $editor, $pool);
2133 my @lock = $SVN::Core::VERSION ge '1.2.0' ? (undef) : ();
2134 my $new = ($rev_a == $rev_b);
2135 $reporter->set_path('', $rev_a, $new, @lock, $pool);
2136 $reporter->finish_report($pool);
2137 $pool->clear;
2138 $editor->{git_commit_ok};
2139}
2140sub gs_do_switch {
2142 my ($self, $rev_a, $rev_b, $path, $recurse, $url_b, $editor) = @_;
2143 my $pool = SVN::Pool->new;
2144 my $reporter = $self->do_switch($rev_b, $path, $recurse,
2145 $url_b, $editor, $pool);
2146 my @lock = $SVN::Core::VERSION ge '1.2.0' ? (undef) : ();
2147 $reporter->set_path($path, $rev_a, 0, @lock, $pool);
2148 $reporter->finish_report($pool);
2149 $pool->clear;
2150 $editor->{git_commit_ok};
2151}
2152sub can_do_switch {
2154 my $self = shift;
2155 unless (defined $can_do_switch) {
2156 my $pool = SVN::Pool->new;
2157 my $rep = eval {
2158 $self->do_switch(1, '', 0, $self->{url},
2159 SVN::Delta::Editor->new, $pool);
2160 };
2161 if ($@) {
2162 $can_do_switch = 0;
2163 } else {
2164 $rep->abort_report($pool);
2165 $can_do_switch = 1;
2166 }
2167 $pool->clear;
2168 }
2169 $can_do_switch;
2170}
2171package Git::SVN::Log;
2173use strict;
2174use warnings;
2175use POSIX qw/strftime/;
2176use vars qw/$TZ $limit $color $pager $non_recursive $verbose $oneline
2177 %rusers $show_commit $incremental/;
2178my $l_fmt;
2179sub cmt_showable {
2181 my ($c) = @_;
2182 return 1 if defined $c->{r};
2183 if ($c->{l} && $c->{l}->[-1] eq "...\n" &&
2184 $c->{a_raw} =~ /\@([a-f\d\-]+)>$/) {
2185 my @log = command(qw/cat-file commit/, $c->{c});
2186 shift @log while ($log[0] ne "\n");
2187 shift @log;
2188 @{$c->{l}} = grep !/^git-svn-id: /, @log;
2189 (undef, $c->{r}, undef) = ::extract_metadata(
2191 (grep(/^git-svn-id: /, @log))[-1]);
2192 }
2193 return defined $c->{r};
2194}
2195sub log_use_color {
2197 return 1 if $color;
2198 my ($dc, $dcvar);
2199 $dcvar = 'color.diff';
2200 $dc = `git-config --get $dcvar`;
2201 if ($dc eq '') {
2202 # nothing at all; fallback to "diff.color"
2203 $dcvar = 'diff.color';
2204 $dc = `git-config --get $dcvar`;
2205 }
2206 chomp($dc);
2207 if ($dc eq 'auto') {
2208 my $pc;
2209 $pc = `git-config --get color.pager`;
2210 if ($pc eq '') {
2211 # does not have it -- fallback to pager.color
2212 $pc = `git-config --bool --get pager.color`;
2213 }
2214 else {
2215 $pc = `git-config --bool --get color.pager`;
2216 if ($?) {
2217 $pc = 'false';
2218 }
2219 }
2220 chomp($pc);
2221 if (-t *STDOUT || (defined $pager && $pc eq 'true')) {
2222 return ($ENV{TERM} && $ENV{TERM} ne 'dumb');
2223 }
2224 return 0;
2225 }
2226 return 0 if $dc eq 'never';
2227 return 1 if $dc eq 'always';
2228 chomp($dc = `git-config --bool --get $dcvar`);
2229 return ($dc eq 'true');
2230}
2231sub git_svn_log_cmd {
2233 my ($r_min, $r_max) = @_;
2234 my $gs = Git::SVN->_new;
2235 my @cmd = (qw/log --abbrev-commit --pretty=raw --default/,
2236 $gs->refname);
2237 push @cmd, '-r' unless $non_recursive;
2238 push @cmd, qw/--raw --name-status/ if $verbose;
2239 push @cmd, '--color' if log_use_color();
2240 return @cmd unless defined $r_max;
2241 if ($r_max == $r_min) {
2242 push @cmd, '--max-count=1';
2243 if (my $c = $gs->rev_db_get($r_max)) {
2244 push @cmd, $c;
2245 }
2246 } else {
2247 my ($c_min, $c_max);
2248 $c_max = $gs->rev_db_get($r_max);
2249 $c_min = $gs->rev_db_get($r_min);
2250 if (defined $c_min && defined $c_max) {
2251 if ($r_max > $r_max) {
2252 push @cmd, "$c_min..$c_max";
2253 } else {
2254 push @cmd, "$c_max..$c_min";
2255 }
2256 } elsif ($r_max > $r_min) {
2257 push @cmd, $c_max;
2258 } else {
2259 push @cmd, $c_min;
2260 }
2261 }
2262 return @cmd;
2263}
2264# adapted from pager.c
2266sub config_pager {
2267 $pager ||= $ENV{GIT_PAGER} || $ENV{PAGER};
2268 if (!defined $pager) {
2269 $pager = 'less';
2270 } elsif (length $pager == 0 || $pager eq 'cat') {
2271 $pager = undef;
2272 }
2273}
2274sub run_pager {
2276 return unless -t *STDOUT;
2277 pipe my $rfd, my $wfd or return;
2278 defined(my $pid = fork) or ::fatal "Can't fork: $!\n";
2279 if (!$pid) {
2280 open STDOUT, '>&', $wfd or
2281 ::fatal "Can't redirect to stdout: $!\n";
2282 return;
2283 }
2284 open STDIN, '<&', $rfd or ::fatal "Can't redirect stdin: $!\n";
2285 $ENV{LESS} ||= 'FRSX';
2286 exec $pager or ::fatal "Can't run pager: $! ($pager)\n";
2287}
2288sub get_author_info {
2290 my ($dest, $author, $t, $tz) = @_;
2291 $author =~ s/(?:^\s*|\s*$)//g;
2292 $dest->{a_raw} = $author;
2293 my $au;
2294 if ($::_authors) {
2295 $au = $rusers{$author} || undef;
2296 }
2297 if (!$au) {
2298 ($au) = ($author =~ /<([^>]+)\@[^>]+>$/);
2299 }
2300 $dest->{t} = $t;
2301 $dest->{tz} = $tz;
2302 $dest->{a} = $au;
2303 # Date::Parse isn't in the standard Perl distro :(
2304 if ($tz =~ s/^\+//) {
2305 $t += ::tz_to_s_offset($tz);
2306 } elsif ($tz =~ s/^\-//) {
2307 $t -= ::tz_to_s_offset($tz);
2308 }
2309 $dest->{t_utc} = $t;
2310}
2311sub process_commit {
2313 my ($c, $r_min, $r_max, $defer) = @_;
2314 if (defined $r_min && defined $r_max) {
2315 if ($r_min == $c->{r} && $r_min == $r_max) {
2316 show_commit($c);
2317 return 0;
2318 }
2319 return 1 if $r_min == $r_max;
2320 if ($r_min < $r_max) {
2321 # we need to reverse the print order
2322 return 0 if (defined $limit && --$limit < 0);
2323 push @$defer, $c;
2324 return 1;
2325 }
2326 if ($r_min != $r_max) {
2327 return 1 if ($r_min < $c->{r});
2328 return 1 if ($r_max > $c->{r});
2329 }
2330 }
2331 return 0 if (defined $limit && --$limit < 0);
2332 show_commit($c);
2333 return 1;
2334}
2335sub show_commit {
2337 my $c = shift;
2338 if ($oneline) {
2339 my $x = "\n";
2340 if (my $l = $c->{l}) {
2341 while ($l->[0] =~ /^\s*$/) { shift @$l }
2342 $x = $l->[0];
2343 }
2344 $l_fmt ||= 'A' . length($c->{r});
2345 print 'r',pack($l_fmt, $c->{r}),' | ';
2346 print "$c->{c} | " if $show_commit;
2347 print $x;
2348 } else {
2349 show_commit_normal($c);
2350 }
2351}
2352sub show_commit_changed_paths {
2354 my ($c) = @_;
2355 return unless $c->{changed};
2356 print "Changed paths:\n", @{$c->{changed}};
2357}
2358sub show_commit_normal {
2360 my ($c) = @_;
2361 print '-' x72, "\nr$c->{r} | ";
2362 print "$c->{c} | " if $show_commit;
2363 print "$c->{a} | ", strftime("%Y-%m-%d %H:%M:%S %z (%a, %d %b %Y)",
2364 localtime($c->{t_utc})), ' | ';
2365 my $nr_line = 0;
2366 if (my $l = $c->{l}) {
2368 while ($l->[$#$l] eq "\n" && $#$l > 0
2369 && $l->[($#$l - 1)] eq "\n") {
2370 pop @$l;
2371 }
2372 $nr_line = scalar @$l;
2373 if (!$nr_line) {
2374 print "1 line\n\n\n";
2375 } else {
2376 if ($nr_line == 1) {
2377 $nr_line = '1 line';
2378 } else {
2379 $nr_line .= ' lines';
2380 }
2381 print $nr_line, "\n";
2382 show_commit_changed_paths($c);
2383 print "\n";
2384 print $_ foreach @$l;
2385 }
2386 } else {
2387 print "1 line\n";
2388 show_commit_changed_paths($c);
2389 print "\n";
2390 }
2392 foreach my $x (qw/raw diff/) {
2393 if ($c->{$x}) {
2394 print "\n";
2395 print $_ foreach @{$c->{$x}}
2396 }
2397 }
2398}
2399sub cmd_show_log {
2401 my (@args) = @_;
2402 my ($r_min, $r_max);
2403 my $r_last = -1; # prevent dupes
2404 if (defined $TZ) {
2405 $ENV{TZ} = $TZ;
2406 } else {
2407 delete $ENV{TZ};
2408 }
2409 if (defined $::_revision) {
2410 if ($::_revision =~ /^(\d+):(\d+)$/) {
2411 ($r_min, $r_max) = ($1, $2);
2412 } elsif ($::_revision =~ /^\d+$/) {
2413 $r_min = $r_max = $::_revision;
2414 } else {
2415 ::fatal "-r$::_revision is not supported, use ",
2416 "standard \'git log\' arguments instead\n";
2417 }
2418 }
2419 config_pager();
2421 @args = (git_svn_log_cmd($r_min, $r_max), @args);
2422 my $log = command_output_pipe(@args);
2423 run_pager();
2424 my (@k, $c, $d);
2425 my $esc_color = qr/(?:\033\[(?:(?:\d+;)*\d*)?m)*/;
2426 while (<$log>) {
2427 if (/^${esc_color}commit ($::sha1_short)/o) {
2428 my $cmt = $1;
2429 if ($c && cmt_showable($c) && $c->{r} != $r_last) {
2430 $r_last = $c->{r};
2431 process_commit($c, $r_min, $r_max, \@k) or
2432 goto out;
2433 }
2434 $d = undef;
2435 $c = { c => $cmt };
2436 } elsif (/^${esc_color}author (.+) (\d+) ([\-\+]?\d+)$/o) {
2437 get_author_info($c, $1, $2, $3);
2438 } elsif (/^${esc_color}(?:tree|parent|committer) /o) {
2439 # ignore
2440 } elsif (/^${esc_color}:\d{6} \d{6} $::sha1_short/o) {
2441 push @{$c->{raw}}, $_;
2442 } elsif (/^${esc_color}[ACRMDT]\t/) {
2443 # we could add $SVN->{svn_path} here, but that requires
2444 # remote access at the moment (repo_path_split)...
2445 s#^(${esc_color})([ACRMDT])\t#$1 $2 #o;
2446 push @{$c->{changed}}, $_;
2447 } elsif (/^${esc_color}diff /o) {
2448 $d = 1;
2449 push @{$c->{diff}}, $_;
2450 } elsif ($d) {
2451 push @{$c->{diff}}, $_;
2452 } elsif (/^${esc_color} (git-svn-id:.+)$/o) {
2453 ($c->{url}, $c->{r}, undef) = ::extract_metadata($1);
2454 } elsif (s/^${esc_color} //o) {
2455 push @{$c->{l}}, $_;
2456 }
2457 }
2458 if ($c && defined $c->{r} && $c->{r} != $r_last) {
2459 $r_last = $c->{r};
2460 process_commit($c, $r_min, $r_max, \@k);
2461 }
2462 if (@k) {
2463 my $swap = $r_max;
2464 $r_max = $r_min;
2465 $r_min = $swap;
2466 process_commit($_, $r_min, $r_max) foreach reverse @k;
2467 }
2468out:
2469 close $log;
2470 print '-' x72,"\n" unless $incremental || $oneline;
2471}
2472package Git::SVN::Migration;
2474# these version numbers do NOT correspond to actual version numbers
2475# of git nor git-svn. They are just relative.
2476#
2477# v0 layout: .git/$id/info/url, refs/heads/$id-HEAD
2478#
2479# v1 layout: .git/$id/info/url, refs/remotes/$id
2480#
2481# v2 layout: .git/svn/$id/info/url, refs/remotes/$id
2482#
2483# v3 layout: .git/svn/$id, refs/remotes/$id
2484# - info/url may remain for backwards compatibility
2485# - this is what we migrate up to this layout automatically,
2486# - this will be used by git svn init on single branches
2487#
2488# v4 layout: .git/svn/$repo_id/$id, refs/remotes/$repo_id/$id
2489# - this is only created for newly multi-init-ed
2490# repositories. Similar in spirit to the
2491# --use-separate-remotes option in git-clone (now default)
2492# - we do not automatically migrate to this (following
2493# the example set by core git)
2494use strict;
2495use warnings;
2496use Carp qw/croak/;
2497use File::Path qw/mkpath/;
2498use File::Basename qw/dirname basename/;
2499use vars qw/$_minimize/;
2500sub migrate_from_v0 {
2502 my $git_dir = $ENV{GIT_DIR};
2503 return undef unless -d $git_dir;
2504 my ($fh, $ctx) = command_output_pipe(qw/rev-parse --symbolic --all/);
2505 my $migrated = 0;
2506 while (<$fh>) {
2507 chomp;
2508 my ($id, $orig_ref) = ($_, $_);
2509 next unless $id =~ s#^refs/heads/(.+)-HEAD$#$1#;
2510 next unless -f "$git_dir/$id/info/url";
2511 my $new_ref = "refs/remotes/$id";
2512 if (::verify_ref("$new_ref^0")) {
2513 print STDERR "W: $orig_ref is probably an old ",
2514 "branch used by an ancient version of ",
2515 "git-svn.\n",
2516 "However, $new_ref also exists.\n",
2517 "We will not be able ",
2518 "to use this branch until this ",
2519 "ambiguity is resolved.\n";
2520 next;
2521 }
2522 print STDERR "Migrating from v0 layout...\n" if !$migrated;
2523 print STDERR "Renaming ref: $orig_ref => $new_ref\n";
2524 command_noisy('update-ref', $new_ref, $orig_ref);
2525 command_noisy('update-ref', '-d', $orig_ref, $orig_ref);
2526 $migrated++;
2527 }
2528 command_close_pipe($fh, $ctx);
2529 print STDERR "Done migrating from v0 layout...\n" if $migrated;
2530 $migrated;
2531}
2532sub migrate_from_v1 {
2534 my $git_dir = $ENV{GIT_DIR};
2535 my $migrated = 0;
2536 return $migrated unless -d $git_dir;
2537 my $svn_dir = "$git_dir/svn";
2538 # just in case somebody used 'svn' as their $id at some point...
2540 return $migrated if -d $svn_dir && ! -f "$svn_dir/info/url";
2541 print STDERR "Migrating from a git-svn v1 layout...\n";
2543 mkpath([$svn_dir]);
2544 print STDERR "Data from a previous version of git-svn exists, but\n\t",
2545 "$svn_dir\n\t(required for this version ",
2546 "($::VERSION) of git-svn) does not. exist\n";
2547 my ($fh, $ctx) = command_output_pipe(qw/rev-parse --symbolic --all/);
2548 while (<$fh>) {
2549 my $x = $_;
2550 next unless $x =~ s#^refs/remotes/##;
2551 chomp $x;
2552 next unless -f "$git_dir/$x/info/url";
2553 my $u = eval { ::file_to_s("$git_dir/$x/info/url") };
2554 next unless $u;
2555 my $dn = dirname("$git_dir/svn/$x");
2556 mkpath([$dn]) unless -d $dn;
2557 if ($x eq 'svn') { # they used 'svn' as GIT_SVN_ID:
2558 mkpath(["$git_dir/svn/svn"]);
2559 print STDERR " - $git_dir/$x/info => ",
2560 "$git_dir/svn/$x/info\n";
2561 rename "$git_dir/$x/info", "$git_dir/svn/$x/info" or
2562 croak "$!: $x";
2563 # don't worry too much about these, they probably
2564 # don't exist with repos this old (save for index,
2565 # and we can easily regenerate that)
2566 foreach my $f (qw/unhandled.log index .rev_db/) {
2567 rename "$git_dir/$x/$f", "$git_dir/svn/$x/$f";
2568 }
2569 } else {
2570 print STDERR " - $git_dir/$x => $git_dir/svn/$x\n";
2571 rename "$git_dir/$x", "$git_dir/svn/$x" or
2572 croak "$!: $x";
2573 }
2574 $migrated++;
2575 }
2576 command_close_pipe($fh, $ctx);
2577 print STDERR "Done migrating from a git-svn v1 layout\n";
2578 $migrated;
2579}
2580sub read_old_urls {
2582 my ($l_map, $pfx, $path) = @_;
2583 my @dir;
2584 foreach (<$path/*>) {
2585 if (-r "$_/info/url") {
2586 $pfx .= '/' if $pfx && $pfx !~ m!/$!;
2587 my $ref_id = $pfx . basename $_;
2588 my $url = ::file_to_s("$_/info/url");
2589 $l_map->{$ref_id} = $url;
2590 } elsif (-d $_) {
2591 push @dir, $_;
2592 }
2593 }
2594 foreach (@dir) {
2595 my $x = $_;
2596 $x =~ s!^\Q$ENV{GIT_DIR}\E/svn/!!o;
2597 read_old_urls($l_map, $x, $_);
2598 }
2599}
2600sub migrate_from_v2 {
2602 my @cfg = command(qw/config -l/);
2603 return if grep /^svn-remote\..+\.url=/, @cfg;
2604 my %l_map;
2605 read_old_urls(\%l_map, '', "$ENV{GIT_DIR}/svn");
2606 my $migrated = 0;
2607 foreach my $ref_id (sort keys %l_map) {
2609 Git::SVN->init($l_map{$ref_id}, '', $ref_id, $ref_id);
2610 $migrated++;
2611 }
2612 $migrated;
2613}
2614sub minimize_connections {
2616 my $r = Git::SVN::read_all_remotes();
2617 my $new_urls = {};
2618 my $root_repos = {};
2619 foreach my $repo_id (keys %$r) {
2620 my $url = $r->{$repo_id}->{url} or next;
2621 my $fetch = $r->{$repo_id}->{fetch} or next;
2622 my $ra = Git::SVN::Ra->new($url);
2623 # skip existing cases where we already connect to the root
2625 if (($ra->{url} eq $ra->{repos_root}) ||
2626 (Git::SVN::sanitize_remote_name($ra->{repos_root}) eq
2627 $repo_id)) {
2628 $root_repos->{$ra->{url}} = $repo_id;
2629 next;
2630 }
2631 my $root_ra = Git::SVN::Ra->new($ra->{repos_root});
2633 my $root_path = $ra->{url};
2634 $root_path =~ s#^\Q$ra->{repos_root}\E/*##;
2635 foreach my $path (keys %$fetch) {
2636 my $ref_id = $fetch->{$path};
2637 my $gs = Git::SVN->new($ref_id, $repo_id, $path);
2638 # make sure we can read when connecting to
2640 # a higher level of a repository
2641 my ($last_rev, undef) = $gs->last_rev_commit;
2642 if (!defined $last_rev) {
2643 $last_rev = eval {
2644 $root_ra->get_latest_revnum;
2645 };
2646 next if $@;
2647 }
2648 my $new = $root_path;
2649 $new .= length $path ? "/$path" : '';
2650 eval {
2651 $root_ra->get_log([$new], $last_rev, $last_rev,
2652 0, 0, 1, sub { });
2653 };
2654 next if $@;
2655 $new_urls->{$ra->{repos_root}}->{$new} =
2656 { ref_id => $ref_id,
2657 old_repo_id => $repo_id,
2658 old_path => $path };
2659 }
2660 }
2661 my @emptied;
2663 foreach my $url (keys %$new_urls) {
2664 # see if we can re-use an existing [svn-remote "repo_id"]
2665 # instead of creating a(n ugly) new section:
2666 my $repo_id = $root_repos->{$url} ||
2667 Git::SVN::sanitize_remote_name($url);
2668 my $fetch = $new_urls->{$url};
2670 foreach my $path (keys %$fetch) {
2671 my $x = $fetch->{$path};
2672 Git::SVN->init($url, $path, $repo_id, $x->{ref_id});
2673 my $pfx = "svn-remote.$x->{old_repo_id}";
2674 my $old_fetch = quotemeta("$x->{old_path}:".
2676 "refs/remotes/$x->{ref_id}");
2677 command_noisy(qw/repo-config --unset/,
2678 "$pfx.fetch", '^'. $old_fetch . '$');
2679 delete $r->{$x->{old_repo_id}}->
2680 {fetch}->{$x->{old_path}};
2681 if (!keys %{$r->{$x->{old_repo_id}}->{fetch}}) {
2682 command_noisy(qw/repo-config --unset/,
2683 "$pfx.url");
2684 push @emptied, $x->{old_repo_id}
2685 }
2686 }
2687 }
2688 if (@emptied) {
2689 my $file = $ENV{GIT_CONFIG} || $ENV{GIT_CONFIG_LOCAL} ||
2690 "$ENV{GIT_DIR}/config";
2691 print STDERR <<EOF;
2692The following [svn-remote] sections in your config file ($file) are empty
2693and can be safely removed:
2694EOF
2695 print STDERR "[svn-remote \"$_\"]\n" foreach @emptied;
2696 }
2697}
2698sub migration_check {
2700 migrate_from_v0();
2701 migrate_from_v1();
2702 migrate_from_v2();
2703 minimize_connections() if $_minimize;
2704}
2705__END__
2707Data structures:
2709$log_entry hashref as returned by libsvn_log_entry()
2711{
2712 log => 'whitespace-formatted log entry
2713', # trailing newline is preserved
2714 revision => '8', # integer
2715 date => '2004-02-24T17:01:44.108345Z', # commit date
2716 author => 'committer name'
2717};
2718@mods = array of diff-index line hashes, each element represents one line
2720 of diff-index output
2721diff-index line ($m hash)
2723{
2724 mode_a => first column of diff-index output, no leading ':',
2725 mode_b => second column of diff-index output,
2726 sha1_b => sha1sum of the final blob,
2727 chg => change type [MCRADT],
2728 file_a => original file name of a file (iff chg is 'C' or 'R')
2729 file_b => new/current file name of a file (any chg)
2730}
2731;
2732# retval of read_url_paths{,_all}();
2734$l_map = {
2735 # repository root url
2736 'https://svn.musicpd.org' => {
2737 # repository path # GIT_SVN_ID
2738 'mpd/trunk' => 'trunk',
2739 'mpd/tags/0.11.5' => 'tags/0.11.5',
2740 },
2741}
2742Notes:
2744 I don't trust the each() function on unless I created %hash myself
2745 because the internal iterator may not have started at base.