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Documentation: rev-list -> rev-parse, other typos, start examples
[git/jrn.git] / git-svn.perl
blob1da31fdc7cf9c90e6ec3dfd815201e36b9650890
1 #!/usr/bin/env perl
2 # Copyright (C) 2006, Eric Wong <normalperson@yhbt.net>
3 # License: GPL v2 or later
4 use warnings;
5 use strict;
6 use vars qw/ $AUTHOR $VERSION
7 $SVN_URL $SVN_INFO $SVN_WC $SVN_UUID
8 $GIT_SVN_INDEX $GIT_SVN
9 $GIT_DIR $GIT_SVN_DIR $REVDB/;
10 $AUTHOR = 'Eric Wong <normalperson@yhbt.net>';
11 $VERSION = '@@GIT_VERSION@@';
12
13 use Cwd qw/abs_path/;
14 $GIT_DIR = abs_path($ENV{GIT_DIR} || '.git');
15 $ENV{GIT_DIR} = $GIT_DIR;
16
17 my $LC_ALL = $ENV{LC_ALL};
18 my $TZ = $ENV{TZ};
19 # make sure the svn binary gives consistent output between locales and TZs:
20 $ENV{TZ} = 'UTC';
21 $ENV{LC_ALL} = 'C';
22 $| = 1; # unbuffer STDOUT
23
24 # properties that we do not log:
25 my %SKIP = ( 'svn:wc:ra_dav:version-url' => 1,
26 'svn:special' => 1,
27 'svn:executable' => 1,
28 'svn:entry:committed-rev' => 1,
29 'svn:entry:last-author' => 1,
30 'svn:entry:uuid' => 1,
31 'svn:entry:committed-date' => 1,
32 );
33
34 sub fatal (@) { print STDERR @_; exit 1 }
35 require SVN::Core; # use()-ing this causes segfaults for me... *shrug*
36 require SVN::Ra;
37 require SVN::Delta;
38 if ($SVN::Core::VERSION lt '1.1.0') {
39 fatal "Need SVN::Core 1.1.0 or better (got $SVN::Core::VERSION)\n";
40 }
41 push @SVN::Git::Editor::ISA, 'SVN::Delta::Editor';
42 push @SVN::Git::Fetcher::ISA, 'SVN::Delta::Editor';
43 *SVN::Git::Fetcher::process_rm = *process_rm;
44 use Carp qw/croak/;
45 use IO::File qw//;
46 use File::Basename qw/dirname basename/;
47 use File::Path qw/mkpath/;
48 use Getopt::Long qw/:config gnu_getopt no_ignore_case auto_abbrev pass_through/;
49 use POSIX qw/strftime/;
50 use IPC::Open3;
51 use Memoize;
52 use Git qw/command command_oneline command_noisy
53 command_output_pipe command_input_pipe command_close_pipe/;
54 memoize('revisions_eq');
55 memoize('cmt_metadata');
56 memoize('get_commit_time');
57
58 my ($SVN);
59
60 my $_optimize_commits = 1 unless $ENV{GIT_SVN_NO_OPTIMIZE_COMMITS};
61 my $sha1 = qr/[a-f\d]{40}/;
62 my $sha1_short = qr/[a-f\d]{4,40}/;
63 my $_esc_color = qr/(?:\033\[(?:(?:\d+;)*\d*)?m)*/;
64 my ($_revision,$_stdin,$_no_ignore_ext,$_no_stop_copy,$_help,$_rmdir,$_edit,
65 $_find_copies_harder, $_l, $_cp_similarity, $_cp_remote,
66 $_repack, $_repack_nr, $_repack_flags, $_q,
67 $_message, $_file, $_follow_parent, $_no_metadata,
68 $_template, $_shared, $_no_default_regex, $_no_graft_copy,
69 $_limit, $_verbose, $_incremental, $_oneline, $_l_fmt, $_show_commit,
70 $_version, $_upgrade, $_authors, $_branch_all_refs, @_opt_m,
71 $_merge, $_strategy, $_dry_run, $_ignore_nodate, $_non_recursive,
72 $_username, $_config_dir, $_no_auth_cache,
73 $_pager, $_color);
74 my (@_branch_from, %tree_map, %users, %rusers, %equiv);
75 my ($_svn_can_do_switch);
76 my @repo_path_split_cache;
77
78 my %fc_opts = ( 'no-ignore-externals' => \$_no_ignore_ext,
79 'branch|b=s' => \@_branch_from,
80 'follow-parent|follow' => \$_follow_parent,
81 'branch-all-refs|B' => \$_branch_all_refs,
82 'authors-file|A=s' => \$_authors,
83 'repack:i' => \$_repack,
84 'no-metadata' => \$_no_metadata,
85 'quiet|q' => \$_q,
86 'username=s' => \$_username,
87 'config-dir=s' => \$_config_dir,
88 'no-auth-cache' => \$_no_auth_cache,
89 'ignore-nodate' => \$_ignore_nodate,
90 'repack-flags|repack-args|repack-opts=s' => \$_repack_flags);
91
92 my ($_trunk, $_tags, $_branches);
93 my %multi_opts = ( 'trunk|T=s' => \$_trunk,
94 'tags|t=s' => \$_tags,
95 'branches|b=s' => \$_branches );
96 my %init_opts = ( 'template=s' => \$_template, 'shared' => \$_shared );
97 my %cmt_opts = ( 'edit|e' => \$_edit,
98 'rmdir' => \$_rmdir,
99 'find-copies-harder' => \$_find_copies_harder,
100 'l=i' => \$_l,
101 'copy-similarity|C=i'=> \$_cp_similarity
102 );
103
104 my %cmd = (
105 fetch => [ \&cmd_fetch, "Download new revisions from SVN",
106 { 'revision|r=s' => \$_revision, %fc_opts } ],
107 init => [ \&init, "Initialize a repo for tracking" .
108 " (requires URL argument)",
109 \%init_opts ],
110 dcommit => [ \&dcommit, 'Commit several diffs to merge with upstream',
111 { 'merge|m|M' => \$_merge,
112 'strategy|s=s' => \$_strategy,
113 'dry-run|n' => \$_dry_run,
114 %cmt_opts, %fc_opts } ],
115 'set-tree' => [ \&commit, "Set an SVN repository to a git tree-ish",
116 { 'stdin|' => \$_stdin, %cmt_opts, %fc_opts, } ],
117 'show-ignore' => [ \&show_ignore, "Show svn:ignore listings",
118 { 'revision|r=i' => \$_revision } ],
119 rebuild => [ \&rebuild, "Rebuild git-svn metadata (after git clone)",
120 { 'no-ignore-externals' => \$_no_ignore_ext,
121 'copy-remote|remote=s' => \$_cp_remote,
122 'upgrade' => \$_upgrade } ],
123 'graft-branches' => [ \&graft_branches,
124 'Detect merges/branches from already imported history',
125 { 'merge-rx|m' => \@_opt_m,
126 'branch|b=s' => \@_branch_from,
127 'branch-all-refs|B' => \$_branch_all_refs,
128 'no-default-regex' => \$_no_default_regex,
129 'no-graft-copy' => \$_no_graft_copy } ],
130 'multi-init' => [ \&multi_init,
131 'Initialize multiple trees (like git-svnimport)',
132 { %multi_opts, %init_opts,
133 'revision|r=i' => \$_revision,
134 'username=s' => \$_username,
135 'config-dir=s' => \$_config_dir,
136 'no-auth-cache' => \$_no_auth_cache,
137 } ],
138 'multi-fetch' => [ \&multi_fetch,
139 'Fetch multiple trees (like git-svnimport)',
140 \%fc_opts ],
141 'log' => [ \&show_log, 'Show commit logs',
142 { 'limit=i' => \$_limit,
143 'revision|r=s' => \$_revision,
144 'verbose|v' => \$_verbose,
145 'incremental' => \$_incremental,
146 'oneline' => \$_oneline,
147 'show-commit' => \$_show_commit,
148 'non-recursive' => \$_non_recursive,
149 'authors-file|A=s' => \$_authors,
150 'color' => \$_color,
151 'pager=s' => \$_pager,
152 } ],
153 'commit-diff' => [ \&commit_diff, 'Commit a diff between two trees',
154 { 'message|m=s' => \$_message,
155 'file|F=s' => \$_file,
156 'revision|r=s' => \$_revision,
157 %cmt_opts } ],
158 );
159
160 my $cmd;
161 for (my $i = 0; $i < @ARGV; $i++) {
162 if (defined $cmd{$ARGV[$i]}) {
163 $cmd = $ARGV[$i];
164 splice @ARGV, $i, 1;
165 last;
166 }
167 };
168
169 my %opts = %{$cmd{$cmd}->[2]} if (defined $cmd);
170
171 read_repo_config(\%opts);
172 my $rv = GetOptions(%opts, 'help|H|h' => \$_help,
173 'version|V' => \$_version,
174 'id|i=s' => \$GIT_SVN);
175 exit 1 if (!$rv && $cmd ne 'log');
176
177 set_default_vals();
178 usage(0) if $_help;
179 version() if $_version;
180 usage(1) unless defined $cmd;
181 init_vars();
182 load_authors() if $_authors;
183 load_all_refs() if $_branch_all_refs;
184 migration_check() unless $cmd =~ /^(?:init|rebuild|multi-init|commit-diff)$/;
185 $cmd{$cmd}->[0]->(@ARGV);
186 exit 0;
187
188 ####################### primary functions ######################
189 sub usage {
190 my $exit = shift || 0;
191 my $fd = $exit ? \*STDERR : \*STDOUT;
192 print $fd <<"";
193 git-svn - bidirectional operations between a single Subversion tree and git
194 Usage: $0 <command> [options] [arguments]\n
195
196 print $fd "Available commands:\n" unless $cmd;
197
198 foreach (sort keys %cmd) {
199 next if $cmd && $cmd ne $_;
200 print $fd ' ',pack('A17',$_),$cmd{$_}->[1],"\n";
201 foreach (keys %{$cmd{$_}->[2]}) {
202 # prints out arguments as they should be passed:
203 my $x = s#[:=]s$## ? '<arg>' : s#[:=]i$## ? '<num>' : '';
204 print $fd ' ' x 21, join(', ', map { length $_ > 1 ?
205 "--$_" : "-$_" }
206 split /\|/,$_)," $x\n";
207 }
208 }
209 print $fd <<"";
210 \nGIT_SVN_ID may be set in the environment or via the --id/-i switch to an
211 arbitrary identifier if you're tracking multiple SVN branches/repositories in
212 one git repository and want to keep them separate. See git-svn(1) for more
213 information.
214
215 exit $exit;
216 }
217
218 sub version {
219 print "git-svn version $VERSION (svn $SVN::Core::VERSION)\n";
220 exit 0;
221 }
222
223 sub rebuild {
224 if (!verify_ref("refs/remotes/$GIT_SVN^0")) {
225 copy_remote_ref();
226 }
227 $SVN_URL = shift or undef;
228 my $newest_rev = 0;
229 if ($_upgrade) {
230 command_noisy('update-ref',"refs/remotes/$GIT_SVN","
231 $GIT_SVN-HEAD");
232 } else {
233 check_upgrade_needed();
234 }
235
236 my ($rev_list, $ctx) = command_output_pipe("rev-list",
237 "refs/remotes/$GIT_SVN");
238 my $latest;
239 while (<$rev_list>) {
240 chomp;
241 my $c = $_;
242 croak "Non-SHA1: $c\n" unless $c =~ /^$sha1$/o;
243 my @commit = grep(/^git-svn-id: /,
244 command(qw/cat-file commit/, $c));
245 next if (!@commit); # skip merges
246 my ($url, $rev, $uuid) = extract_metadata($commit[$#commit]);
247 if (!defined $rev || !$uuid) {
248 croak "Unable to extract revision or UUID from ",
249 "$c, $commit[$#commit]\n";
250 }
251
252 # if we merged or otherwise started elsewhere, this is
253 # how we break out of it
254 next if (defined $SVN_UUID && ($uuid ne $SVN_UUID));
255 next if (defined $SVN_URL && defined $url && ($url ne $SVN_URL));
256
257 unless (defined $latest) {
258 if (!$SVN_URL && !$url) {
259 croak "SVN repository location required: $url\n";
260 }
261 $SVN_URL ||= $url;
262 $SVN_UUID ||= $uuid;
263 setup_git_svn();
264 $latest = $rev;
265 }
266 revdb_set($REVDB, $rev, $c);
267 print "r$rev = $c\n";
268 $newest_rev = $rev if ($rev > $newest_rev);
269 }
270 command_close_pipe($rev_list, $ctx);
271 }
272
273 sub init {
274 my $url = shift or die "SVN repository location required " .
275 "as a command-line argument\n";
276 $url =~ s!/+$!!; # strip trailing slash
277
278 if (my $repo_path = shift) {
279 unless (-d $repo_path) {
280 mkpath([$repo_path]);
281 }
282 $GIT_DIR = $ENV{GIT_DIR} = $repo_path . "/.git";
283 init_vars();
284 }
285
286 $SVN_URL = $url;
287 unless (-d $GIT_DIR) {
288 my @init_db = ('init-db');
289 push @init_db, "--template=$_template" if defined $_template;
290 push @init_db, "--shared" if defined $_shared;
291 command_noisy(@init_db);
292 }
293 setup_git_svn();
294 }
295
296 sub cmd_fetch {
297 fetch_child_id($GIT_SVN, @_);
298 }
299
300 sub fetch {
301 check_upgrade_needed();
302 $SVN_URL ||= file_to_s("$GIT_SVN_DIR/info/url");
303 my $ret = fetch_lib(@_);
304 if ($ret->{commit} && !verify_ref('refs/heads/master^0')) {
305 command_noisy(qw(update-ref refs/heads/master),$ret->{commit});
306 }
307 return $ret;
308 }
309
310 sub fetch_lib {
311 my (@parents) = @_;
312 $SVN_URL ||= file_to_s("$GIT_SVN_DIR/info/url");
313 $SVN ||= libsvn_connect($SVN_URL);
314 my ($last_rev, $last_commit) = svn_grab_base_rev();
315 my ($base, $head) = libsvn_parse_revision($last_rev);
316 if ($base > $head) {
317 return { revision => $last_rev, commit => $last_commit }
318 }
319 my $index = set_index($GIT_SVN_INDEX);
320
321 # limit ourselves and also fork() since get_log won't release memory
322 # after processing a revision and SVN stuff seems to leak
323 my $inc = 1000;
324 my ($min, $max) = ($base, $head < $base+$inc ? $head : $base+$inc);
325 read_uuid();
326 if (defined $last_commit) {
327 unless (-e $GIT_SVN_INDEX) {
328 command_noisy('read-tree', $last_commit);
329 }
330 my $x = command_oneline('write-tree');
331 my ($y) = (command(qw/cat-file commit/, $last_commit)
332 =~ /^tree ($sha1)/m);
333 if ($y ne $x) {
334 unlink $GIT_SVN_INDEX or croak $!;
335 command_noisy('read-tree', $last_commit);
336 }
337 $x = command_oneline('write-tree');
338 if ($y ne $x) {
339 print STDERR "trees ($last_commit) $y != $x\n",
340 "Something is seriously wrong...\n";
341 }
342 }
343 while (1) {
344 # fork, because using SVN::Pool with get_log() still doesn't
345 # seem to help enough to keep memory usage down.
346 defined(my $pid = fork) or croak $!;
347 if (!$pid) {
348 $SVN::Error::handler = \&libsvn_skip_unknown_revs;
349
350 # Yes I'm perfectly aware that the fourth argument
351 # below is the limit revisions number. Unfortunately
352 # performance sucks with it enabled, so it's much
353 # faster to fetch revision ranges instead of relying
354 # on the limiter.
355 libsvn_get_log(libsvn_dup_ra($SVN), [''],
356 $min, $max, 0, 1, 1,
357 sub {
358 my $log_msg;
359 if ($last_commit) {
360 $log_msg = libsvn_fetch(
361 $last_commit, @_);
362 $last_commit = git_commit(
363 $log_msg,
364 $last_commit,
365 @parents);
366 } else {
367 $log_msg = libsvn_new_tree(@_);
368 $last_commit = git_commit(
369 $log_msg, @parents);
370 }
371 });
372 exit 0;
373 }
374 waitpid $pid, 0;
375 croak $? if $?;
376 ($last_rev, $last_commit) = svn_grab_base_rev();
377 last if ($max >= $head);
378 $min = $max + 1;
379 $max += $inc;
380 $max = $head if ($max > $head);
381 $SVN = libsvn_connect($SVN_URL);
382 }
383 restore_index($index);
384 return { revision => $last_rev, commit => $last_commit };
385 }
386
387 sub commit {
388 my (@commits) = @_;
389 check_upgrade_needed();
390 if ($_stdin || !@commits) {
391 print "Reading from stdin...\n";
392 @commits = ();
393 while (<STDIN>) {
394 if (/\b($sha1_short)\b/o) {
395 unshift @commits, $1;
396 }
397 }
398 }
399 my @revs;
400 foreach my $c (@commits) {
401 my @tmp = command('rev-parse',$c);
402 if (scalar @tmp == 1) {
403 push @revs, $tmp[0];
404 } elsif (scalar @tmp > 1) {
405 push @revs, reverse(command('rev-list',@tmp));
406 } else {
407 die "Failed to rev-parse $c\n";
408 }
409 }
410 commit_lib(@revs);
411 print "Done committing ",scalar @revs," revisions to SVN\n";
412 }
413
414 sub commit_lib {
415 my (@revs) = @_;
416 my ($r_last, $cmt_last) = svn_grab_base_rev();
417 defined $r_last or die "Must have an existing revision to commit\n";
418 my $fetched = fetch();
419 if ($r_last != $fetched->{revision}) {
420 print STDERR "There are new revisions that were fetched ",
421 "and need to be merged (or acknowledged) ",
422 "before committing.\n",
423 "last rev: $r_last\n",
424 " current: $fetched->{revision}\n";
425 exit 1;
426 }
427 read_uuid();
428 my @lock = $SVN::Core::VERSION ge '1.2.0' ? (undef, 0) : ();
429 my $commit_msg = "$GIT_SVN_DIR/.svn-commit.tmp.$$";
430
431 my $repo;
432 set_svn_commit_env();
433 foreach my $c (@revs) {
434 my $log_msg = get_commit_message($c, $commit_msg);
435
436 # fork for each commit because there's a memory leak I
437 # can't track down... (it's probably in the SVN code)
438 defined(my $pid = open my $fh, '-|') or croak $!;
439 if (!$pid) {
440 my $ed = SVN::Git::Editor->new(
441 { r => $r_last,
442 ra => libsvn_dup_ra($SVN),
443 c => $c,
444 svn_path => $SVN->{svn_path},
445 },
446 $SVN->get_commit_editor(
447 $log_msg->{msg},
448 sub {
449 libsvn_commit_cb(
450 @_, $c,
451 $log_msg->{msg},
452 $r_last,
453 $cmt_last)
454 },
455 @lock)
456 );
457 my $mods = libsvn_checkout_tree($cmt_last, $c, $ed);
458 if (@$mods == 0) {
459 print "No changes\nr$r_last = $cmt_last\n";
460 $ed->abort_edit;
461 } else {
462 $ed->close_edit;
463 }
464 exit 0;
465 }
466 my ($r_new, $cmt_new, $no);
467 while (<$fh>) {
468 print $_;
469 chomp;
470 if (/^r(\d+) = ($sha1)$/o) {
471 ($r_new, $cmt_new) = ($1, $2);
472 } elsif ($_ eq 'No changes') {
473 $no = 1;
474 }
475 }
476 close $fh or exit 1;
477 if (! defined $r_new && ! defined $cmt_new) {
478 unless ($no) {
479 die "Failed to parse revision information\n";
480 }
481 } else {
482 ($r_last, $cmt_last) = ($r_new, $cmt_new);
483 }
484 }
485 $ENV{LC_ALL} = 'C';
486 unlink $commit_msg;
487 }
488
489 sub dcommit {
490 my $head = shift || 'HEAD';
491 my $gs = "refs/remotes/$GIT_SVN";
492 my @refs = command(qw/rev-list --no-merges/, "$gs..$head");
493 my $last_rev;
494 foreach my $d (reverse @refs) {
495 if (!verify_ref("$d~1")) {
496 die "Commit $d\n",
497 "has no parent commit, and therefore ",
498 "nothing to diff against.\n",
499 "You should be working from a repository ",
500 "originally created by git-svn\n";
501 }
502 unless (defined $last_rev) {
503 (undef, $last_rev, undef) = cmt_metadata("$d~1");
504 unless (defined $last_rev) {
505 die "Unable to extract revision information ",
506 "from commit $d~1\n";
507 }
508 }
509 if ($_dry_run) {
510 print "diff-tree $d~1 $d\n";
511 } else {
512 if (my $r = commit_diff("$d~1", $d, undef, $last_rev)) {
513 $last_rev = $r;
514 } # else: no changes, same $last_rev
515 }
516 }
517 return if $_dry_run;
518 fetch();
519 my @diff = command('diff-tree', 'HEAD', $gs, '--');
520 my @finish;
521 if (@diff) {
522 @finish = qw/rebase/;
523 push @finish, qw/--merge/ if $_merge;
524 push @finish, "--strategy=$_strategy" if $_strategy;
525 print STDERR "W: HEAD and $gs differ, using @finish:\n", @diff;
526 } else {
527 print "No changes between current HEAD and $gs\n",
528 "Resetting to the latest $gs\n";
529 @finish = qw/reset --mixed/;
530 }
531 command_noisy(@finish, $gs);
532 }
533
534 sub show_ignore {
535 $SVN_URL ||= file_to_s("$GIT_SVN_DIR/info/url");
536 my $repo;
537 $SVN ||= libsvn_connect($SVN_URL);
538 my $r = defined $_revision ? $_revision : $SVN->get_latest_revnum;
539 libsvn_traverse_ignore(\*STDOUT, '', $r);
540 }
541
542 sub graft_branches {
543 my $gr_file = "$GIT_DIR/info/grafts";
544 my ($grafts, $comments) = read_grafts($gr_file);
545 my $gr_sha1;
546
547 if (%$grafts) {
548 # temporarily disable our grafts file to make this idempotent
549 chomp($gr_sha1 = command(qw/hash-object -w/,$gr_file));
550 rename $gr_file, "$gr_file~$gr_sha1" or croak $!;
551 }
552
553 my $l_map = read_url_paths();
554 my @re = map { qr/$_/is } @_opt_m if @_opt_m;
555 unless ($_no_default_regex) {
556 push @re, (qr/\b(?:merge|merging|merged)\s+with\s+([\w\.\-]+)/i,
557 qr/\b(?:merge|merging|merged)\s+([\w\.\-]+)/i,
558 qr/\b(?:from|of)\s+([\w\.\-]+)/i );
559 }
560 foreach my $u (keys %$l_map) {
561 if (@re) {
562 foreach my $p (keys %{$l_map->{$u}}) {
563 graft_merge_msg($grafts,$l_map,$u,$p,@re);
564 }
565 }
566 unless ($_no_graft_copy) {
567 graft_file_copy_lib($grafts,$l_map,$u);
568 }
569 }
570 graft_tree_joins($grafts);
571
572 write_grafts($grafts, $comments, $gr_file);
573 unlink "$gr_file~$gr_sha1" if $gr_sha1;
574 }
575
576 sub multi_init {
577 my $url = shift;
578 unless (defined $_trunk || defined $_branches || defined $_tags) {
579 usage(1);
580 }
581 if (defined $_trunk) {
582 my $trunk_url = complete_svn_url($url, $_trunk);
583 my $ch_id;
584 if ($GIT_SVN eq 'git-svn') {
585 $ch_id = 1;
586 $GIT_SVN = $ENV{GIT_SVN_ID} = 'trunk';
587 }
588 init_vars();
589 unless (-d $GIT_SVN_DIR) {
590 if ($ch_id) {
591 print "GIT_SVN_ID set to 'trunk' for ",
592 "$trunk_url ($_trunk)\n";
593 }
594 init($trunk_url);
595 command_noisy('repo-config', 'svn.trunk', $trunk_url);
596 }
597 }
598 complete_url_ls_init($url, $_branches, '--branches/-b', '');
599 complete_url_ls_init($url, $_tags, '--tags/-t', 'tags/');
600 }
601
602 sub multi_fetch {
603 # try to do trunk first, since branches/tags
604 # may be descended from it.
605 if (-e "$GIT_DIR/svn/trunk/info/url") {
606 fetch_child_id('trunk', @_);
607 }
608 rec_fetch('', "$GIT_DIR/svn", @_);
609 }
610
611 sub show_log {
612 my (@args) = @_;
613 my ($r_min, $r_max);
614 my $r_last = -1; # prevent dupes
615 rload_authors() if $_authors;
616 if (defined $TZ) {
617 $ENV{TZ} = $TZ;
618 } else {
619 delete $ENV{TZ};
620 }
621 if (defined $_revision) {
622 if ($_revision =~ /^(\d+):(\d+)$/) {
623 ($r_min, $r_max) = ($1, $2);
624 } elsif ($_revision =~ /^\d+$/) {
625 $r_min = $r_max = $_revision;
626 } else {
627 print STDERR "-r$_revision is not supported, use ",
628 "standard \'git log\' arguments instead\n";
629 exit 1;
630 }
631 }
632
633 config_pager();
634 @args = (git_svn_log_cmd($r_min, $r_max), @args);
635 my $log = command_output_pipe(@args);
636 run_pager();
637 my (@k, $c, $d);
638
639 while (<$log>) {
640 if (/^${_esc_color}commit ($sha1_short)/o) {
641 my $cmt = $1;
642 if ($c && cmt_showable($c) && $c->{r} != $r_last) {
643 $r_last = $c->{r};
644 process_commit($c, $r_min, $r_max, \@k) or
645 goto out;
646 }
647 $d = undef;
648 $c = { c => $cmt };
649 } elsif (/^${_esc_color}author (.+) (\d+) ([\-\+]?\d+)$/) {
650 get_author_info($c, $1, $2, $3);
651 } elsif (/^${_esc_color}(?:tree|parent|committer) /) {
652 # ignore
653 } elsif (/^${_esc_color}:\d{6} \d{6} $sha1_short/o) {
654 push @{$c->{raw}}, $_;
655 } elsif (/^${_esc_color}[ACRMDT]\t/) {
656 # we could add $SVN->{svn_path} here, but that requires
657 # remote access at the moment (repo_path_split)...
658 s#^(${_esc_color})([ACRMDT])\t#$1 $2 #;
659 push @{$c->{changed}}, $_;
660 } elsif (/^${_esc_color}diff /) {
661 $d = 1;
662 push @{$c->{diff}}, $_;
663 } elsif ($d) {
664 push @{$c->{diff}}, $_;
665 } elsif (/^${_esc_color} (git-svn-id:.+)$/) {
666 ($c->{url}, $c->{r}, undef) = extract_metadata($1);
667 } elsif (s/^${_esc_color} //) {
668 push @{$c->{l}}, $_;
669 }
670 }
671 if ($c && defined $c->{r} && $c->{r} != $r_last) {
672 $r_last = $c->{r};
673 process_commit($c, $r_min, $r_max, \@k);
674 }
675 if (@k) {
676 my $swap = $r_max;
677 $r_max = $r_min;
678 $r_min = $swap;
679 process_commit($_, $r_min, $r_max) foreach reverse @k;
680 }
681 out:
682 eval { command_close_pipe($log) };
683 print '-' x72,"\n" unless $_incremental || $_oneline;
684 }
685
686 sub commit_diff_usage {
687 print STDERR "Usage: $0 commit-diff <tree-ish> <tree-ish> [<URL>]\n";
688 exit 1
689 }
690
691 sub commit_diff {
692 my $ta = shift or commit_diff_usage();
693 my $tb = shift or commit_diff_usage();
694 if (!eval { $SVN_URL = shift || file_to_s("$GIT_SVN_DIR/info/url") }) {
695 print STDERR "Needed URL or usable git-svn id command-line\n";
696 commit_diff_usage();
697 }
698 my $r = shift;
699 unless (defined $r) {
700 if (defined $_revision) {
701 $r = $_revision
702 } else {
703 die "-r|--revision is a required argument\n";
704 }
705 }
706 if (defined $_message && defined $_file) {
707 print STDERR "Both --message/-m and --file/-F specified ",
708 "for the commit message.\n",
709 "I have no idea what you mean\n";
710 exit 1;
711 }
712 if (defined $_file) {
713 $_message = file_to_s($_file);
714 } else {
715 $_message ||= get_commit_message($tb,
716 "$GIT_DIR/.svn-commit.tmp.$$")->{msg};
717 }
718 $SVN ||= libsvn_connect($SVN_URL);
719 if ($r eq 'HEAD') {
720 $r = $SVN->get_latest_revnum;
721 } elsif ($r !~ /^\d+$/) {
722 die "revision argument: $r not understood by git-svn\n";
723 }
724 my @lock = $SVN::Core::VERSION ge '1.2.0' ? (undef, 0) : ();
725 my $rev_committed;
726 my $ed = SVN::Git::Editor->new({ r => $r,
727 ra => libsvn_dup_ra($SVN),
728 c => $tb,
729 svn_path => $SVN->{svn_path}
730 },
731 $SVN->get_commit_editor($_message,
732 sub {
733 $rev_committed = $_[0];
734 print "Committed $_[0]\n";
735 }, @lock)
736 );
737 eval {
738 my $mods = libsvn_checkout_tree($ta, $tb, $ed);
739 if (@$mods == 0) {
740 print "No changes\n$ta == $tb\n";
741 $ed->abort_edit;
742 } else {
743 $ed->close_edit;
744 }
745 };
746 fatal "$@\n" if $@;
747 $_message = $_file = undef;
748 return $rev_committed;
749 }
750
751 ########################### utility functions #########################
752
753 sub cmt_showable {
754 my ($c) = @_;
755 return 1 if defined $c->{r};
756 if ($c->{l} && $c->{l}->[-1] eq "...\n" &&
757 $c->{a_raw} =~ /\@([a-f\d\-]+)>$/) {
758 my @msg = command(qw/cat-file commit/, $c->{c});
759 shift @msg while ($msg[0] ne "\n");
760 shift @msg;
761 @{$c->{l}} = grep !/^git-svn-id: /, @msg;
762
763 (undef, $c->{r}, undef) = extract_metadata(
764 (grep(/^git-svn-id: /, @msg))[-1]);
765 }
766 return defined $c->{r};
767 }
768
769 sub log_use_color {
770 return 1 if $_color;
771 my ($dc, $dcvar);
772 $dcvar = 'color.diff';
773 $dc = `git-repo-config --get $dcvar`;
774 if ($dc eq '') {
775 # nothing at all; fallback to "diff.color"
776 $dcvar = 'diff.color';
777 $dc = `git-repo-config --get $dcvar`;
778 }
779 chomp($dc);
780 if ($dc eq 'auto') {
781 my $pc;
782 $pc = `git-repo-config --get color.pager`;
783 if ($pc eq '') {
784 # does not have it -- fallback to pager.color
785 $pc = `git-repo-config --bool --get pager.color`;
786 }
787 else {
788 $pc = `git-repo-config --bool --get color.pager`;
789 if ($?) {
790 $pc = 'false';
791 }
792 }
793 chomp($pc);
794 if (-t *STDOUT || (defined $_pager && $pc eq 'true')) {
795 return ($ENV{TERM} && $ENV{TERM} ne 'dumb');
796 }
797 return 0;
798 }
799 return 0 if $dc eq 'never';
800 return 1 if $dc eq 'always';
801 chomp($dc = `git-repo-config --bool --get $dcvar`);
802 return ($dc eq 'true');
803 }
804
805 sub git_svn_log_cmd {
806 my ($r_min, $r_max) = @_;
807 my @cmd = (qw/log --abbrev-commit --pretty=raw
808 --default/, "refs/remotes/$GIT_SVN");
809 push @cmd, '-r' unless $_non_recursive;
810 push @cmd, qw/--raw --name-status/ if $_verbose;
811 push @cmd, '--color' if log_use_color();
812 return @cmd unless defined $r_max;
813 if ($r_max == $r_min) {
814 push @cmd, '--max-count=1';
815 if (my $c = revdb_get($REVDB, $r_max)) {
816 push @cmd, $c;
817 }
818 } else {
819 my ($c_min, $c_max);
820 $c_max = revdb_get($REVDB, $r_max);
821 $c_min = revdb_get($REVDB, $r_min);
822 if (defined $c_min && defined $c_max) {
823 if ($r_max > $r_max) {
824 push @cmd, "$c_min..$c_max";
825 } else {
826 push @cmd, "$c_max..$c_min";
827 }
828 } elsif ($r_max > $r_min) {
829 push @cmd, $c_max;
830 } else {
831 push @cmd, $c_min;
832 }
833 }
834 return @cmd;
835 }
836
837 sub fetch_child_id {
838 my $id = shift;
839 print "Fetching $id\n";
840 my $ref = "$GIT_DIR/refs/remotes/$id";
841 defined(my $pid = open my $fh, '-|') or croak $!;
842 if (!$pid) {
843 $GIT_SVN = $ENV{GIT_SVN_ID} = $id;
844 init_vars();
845 fetch(@_);
846 exit 0;
847 }
848 while (<$fh>) {
849 print $_;
850 check_repack() if (/^r\d+ = $sha1/o);
851 }
852 close $fh or croak $?;
853 }
854
855 sub rec_fetch {
856 my ($pfx, $p, @args) = @_;
857 my @dir;
858 foreach (sort <$p/*>) {
859 if (-r "$_/info/url") {
860 $pfx .= '/' if $pfx && $pfx !~ m!/$!;
861 my $id = $pfx . basename $_;
862 next if $id eq 'trunk';
863 fetch_child_id($id, @args);
864 } elsif (-d $_) {
865 push @dir, $_;
866 }
867 }
868 foreach (@dir) {
869 my $x = $_;
870 $x =~ s!^\Q$GIT_DIR\E/svn/!!;
871 rec_fetch($x, $_);
872 }
873 }
874
875 sub complete_svn_url {
876 my ($url, $path) = @_;
877 $path =~ s#/+$##;
878 $url =~ s#/+$## if $url;
879 if ($path !~ m#^[a-z\+]+://#) {
880 $path = '/' . $path if ($path !~ m#^/#);
881 if (!defined $url || $url !~ m#^[a-z\+]+://#) {
882 fatal("E: '$path' is not a complete URL ",
883 "and a separate URL is not specified\n");
884 }
885 $path = $url . $path;
886 }
887 return $path;
888 }
889
890 sub complete_url_ls_init {
891 my ($url, $path, $switch, $pfx) = @_;
892 unless ($path) {
893 print STDERR "W: $switch not specified\n";
894 return;
895 }
896 my $full_url = complete_svn_url($url, $path);
897 my @ls = libsvn_ls_fullurl($full_url);
898 defined(my $pid = fork) or croak $!;
899 if (!$pid) {
900 foreach my $u (map { "$full_url/$_" } (grep m!/$!, @ls)) {
901 $u =~ s#/+$##;
902 if ($u !~ m!\Q$full_url\E/(.+)$!) {
903 print STDERR "W: Unrecognized URL: $u\n";
904 die "This should never happen\n";
905 }
906 # don't try to init already existing refs
907 my $id = $pfx.$1;
908 $GIT_SVN = $ENV{GIT_SVN_ID} = $id;
909 init_vars();
910 unless (-d $GIT_SVN_DIR) {
911 print "init $u => $id\n";
912 init($u);
913 }
914 }
915 exit 0;
916 }
917 waitpid $pid, 0;
918 croak $? if $?;
919 my ($n) = ($switch =~ /^--(\w+)/);
920 command_noisy('repo-config', "svn.$n", $full_url);
921 }
922
923 sub common_prefix {
924 my $paths = shift;
925 my %common;
926 foreach (@$paths) {
927 my @tmp = split m#/#, $_;
928 my $p = '';
929 while (my $x = shift @tmp) {
930 $p .= "/$x";
931 $common{$p} ||= 0;
932 $common{$p}++;
933 }
934 }
935 foreach (sort {length $b <=> length $a} keys %common) {
936 if ($common{$_} == @$paths) {
937 return $_;
938 }
939 }
940 return '';
941 }
942
943 # grafts set here are 'stronger' in that they're based on actual tree
944 # matches, and won't be deleted from merge-base checking in write_grafts()
945 sub graft_tree_joins {
946 my $grafts = shift;
947 map_tree_joins() if (@_branch_from && !%tree_map);
948 return unless %tree_map;
949
950 git_svn_each(sub {
951 my $i = shift;
952 my @args = (qw/rev-list --pretty=raw/, "refs/remotes/$i");
953 my ($fh, $ctx) = command_output_pipe(@args);
954 while (<$fh>) {
955 next unless /^commit ($sha1)$/o;
956 my $c = $1;
957 my ($t) = (<$fh> =~ /^tree ($sha1)$/o);
958 next unless $tree_map{$t};
959
960 my $l;
961 do {
962 $l = readline $fh;
963 } until ($l =~ /^committer (?:.+) (\d+) ([\-\+]?\d+)$/);
964
965 my ($s, $tz) = ($1, $2);
966 if ($tz =~ s/^\+//) {
967 $s += tz_to_s_offset($tz);
968 } elsif ($tz =~ s/^\-//) {
969 $s -= tz_to_s_offset($tz);
970 }
971
972 my ($url_a, $r_a, $uuid_a) = cmt_metadata($c);
973
974 foreach my $p (@{$tree_map{$t}}) {
975 next if $p eq $c;
976 my $mb = eval { command('merge-base', $c, $p) };
977 next unless ($@ || $?);
978 if (defined $r_a) {
979 # see if SVN says it's a relative
980 my ($url_b, $r_b, $uuid_b) =
981 cmt_metadata($p);
982 next if (defined $url_b &&
983 defined $url_a &&
984 ($url_a eq $url_b) &&
985 ($uuid_a eq $uuid_b));
986 if ($uuid_a eq $uuid_b) {
987 if ($r_b < $r_a) {
988 $grafts->{$c}->{$p} = 2;
989 next;
990 } elsif ($r_b > $r_a) {
991 $grafts->{$p}->{$c} = 2;
992 next;
993 }
994 }
995 }
996 my $ct = get_commit_time($p);
997 if ($ct < $s) {
998 $grafts->{$c}->{$p} = 2;
999 } elsif ($ct > $s) {
1000 $grafts->{$p}->{$c} = 2;
1001 }
1002 # what should we do when $ct == $s ?
1003 }
1004 }
1005 command_close_pipe($fh, $ctx);
1006 });
1007 }
1008
1009 sub graft_file_copy_lib {
1010 my ($grafts, $l_map, $u) = @_;
1011 my $tree_paths = $l_map->{$u};
1012 my $pfx = common_prefix([keys %$tree_paths]);
1013 my ($repo, $path) = repo_path_split($u.$pfx);
1014 $SVN = libsvn_connect($repo);
1015
1016 my ($base, $head) = libsvn_parse_revision();
1017 my $inc = 1000;
1018 my ($min, $max) = ($base, $head < $base+$inc ? $head : $base+$inc);
1019 my $eh = $SVN::Error::handler;
1020 $SVN::Error::handler = \&libsvn_skip_unknown_revs;
1021 while (1) {
1022 my $pool = SVN::Pool->new;
1023 libsvn_get_log(libsvn_dup_ra($SVN), [$path],
1024 $min, $max, 0, 2, 1,
1025 sub {
1026 libsvn_graft_file_copies($grafts, $tree_paths,
1027 $path, @_);
1028 }, $pool);
1029 $pool->clear;
1030 last if ($max >= $head);
1031 $min = $max + 1;
1032 $max += $inc;
1033 $max = $head if ($max > $head);
1034 }
1035 $SVN::Error::handler = $eh;
1036 }
1037
1038 sub process_merge_msg_matches {
1039 my ($grafts, $l_map, $u, $p, $c, @matches) = @_;
1040 my (@strong, @weak);
1041 foreach (@matches) {
1042 # merging with ourselves is not interesting
1043 next if $_ eq $p;
1044 if ($l_map->{$u}->{$_}) {
1045 push @strong, $_;
1046 } else {
1047 push @weak, $_;
1048 }
1049 }
1050 foreach my $w (@weak) {
1051 last if @strong;
1052 # no exact match, use branch name as regexp.
1053 my $re = qr/\Q$w\E/i;
1054 foreach (keys %{$l_map->{$u}}) {
1055 if (/$re/) {
1056 push @strong, $l_map->{$u}->{$_};
1057 last;
1058 }
1059 }
1060 last if @strong;
1061 $w = basename($w);
1062 $re = qr/\Q$w\E/i;
1063 foreach (keys %{$l_map->{$u}}) {
1064 if (/$re/) {
1065 push @strong, $l_map->{$u}->{$_};
1066 last;
1067 }
1068 }
1069 }
1070 my ($rev) = ($c->{m} =~ /^git-svn-id:\s(?:\S+?)\@(\d+)
1071 \s(?:[a-f\d\-]+)$/xsm);
1072 unless (defined $rev) {
1073 ($rev) = ($c->{m} =~/^git-svn-id:\s(\d+)
1074 \@(?:[a-f\d\-]+)/xsm);
1075 return unless defined $rev;
1076 }
1077 foreach my $m (@strong) {
1078 my ($r0, $s0) = find_rev_before($rev, $m, 1);
1079 $grafts->{$c->{c}}->{$s0} = 1 if defined $s0;
1080 }
1081 }
1082
1083 sub graft_merge_msg {
1084 my ($grafts, $l_map, $u, $p, @re) = @_;
1085
1086 my $x = $l_map->{$u}->{$p};
1087 my $rl = rev_list_raw($x);
1088 while (my $c = next_rev_list_entry($rl)) {
1089 foreach my $re (@re) {
1090 my (@br) = ($c->{m} =~ /$re/g);
1091 next unless @br;
1092 process_merge_msg_matches($grafts,$l_map,$u,$p,$c,@br);
1093 }
1094 }
1095 }
1096
1097 sub read_uuid {
1098 return if $SVN_UUID;
1099 my $pool = SVN::Pool->new;
1100 $SVN_UUID = $SVN->get_uuid($pool);
1101 $pool->clear;
1102 }
1103
1104 sub verify_ref {
1105 my ($ref) = @_;
1106 eval { command_oneline([ 'rev-parse', '--verify', $ref ],
1107 { STDERR => 0 }); };
1108 }
1109
1110 sub repo_path_split {
1111 my $full_url = shift;
1112 $full_url =~ s#/+$##;
1113
1114 foreach (@repo_path_split_cache) {
1115 if ($full_url =~ s#$_##) {
1116 my $u = $1;
1117 $full_url =~ s#^/+##;
1118 return ($u, $full_url);
1119 }
1120 }
1121 my $tmp = libsvn_connect($full_url);
1122 return ($tmp->{repos_root}, $tmp->{svn_path});
1123 }
1124
1125 sub setup_git_svn {
1126 defined $SVN_URL or croak "SVN repository location required\n";
1127 unless (-d $GIT_DIR) {
1128 croak "GIT_DIR=$GIT_DIR does not exist!\n";
1129 }
1130 mkpath([$GIT_SVN_DIR]);
1131 mkpath(["$GIT_SVN_DIR/info"]);
1132 open my $fh, '>>',$REVDB or croak $!;
1133 close $fh;
1134 s_to_file($SVN_URL,"$GIT_SVN_DIR/info/url");
1135
1136 }
1137
1138 sub get_tree_from_treeish {
1139 my ($treeish) = @_;
1140 croak "Not a sha1: $treeish\n" unless $treeish =~ /^$sha1$/o;
1141 my $type = command_oneline(qw/cat-file -t/, $treeish);
1142 my $expected;
1143 while ($type eq 'tag') {
1144 ($treeish, $type) = command(qw/cat-file tag/, $treeish);
1145 }
1146 if ($type eq 'commit') {
1147 $expected = (grep /^tree /, command(qw/cat-file commit/,
1148 $treeish))[0];
1149 ($expected) = ($expected =~ /^tree ($sha1)$/);
1150 die "Unable to get tree from $treeish\n" unless $expected;
1151 } elsif ($type eq 'tree') {
1152 $expected = $treeish;
1153 } else {
1154 die "$treeish is a $type, expected tree, tag or commit\n";
1155 }
1156 return $expected;
1157 }
1158
1159 sub get_diff {
1160 my ($from, $treeish) = @_;
1161 print "diff-tree $from $treeish\n";
1162 my @diff_tree = qw(diff-tree -z -r);
1163 if ($_cp_similarity) {
1164 push @diff_tree, "-C$_cp_similarity";
1165 } else {
1166 push @diff_tree, '-C';
1167 }
1168 push @diff_tree, '--find-copies-harder' if $_find_copies_harder;
1169 push @diff_tree, "-l$_l" if defined $_l;
1170 push @diff_tree, $from, $treeish;
1171 my ($diff_fh, $ctx) = command_output_pipe(@diff_tree);
1172 local $/ = "\0";
1173 my $state = 'meta';
1174 my @mods;
1175 while (<$diff_fh>) {
1176 chomp $_; # this gets rid of the trailing "\0"
1177 if ($state eq 'meta' && /^:(\d{6})\s(\d{6})\s
1178 $sha1\s($sha1)\s([MTCRAD])\d*$/xo) {
1179 push @mods, { mode_a => $1, mode_b => $2,
1180 sha1_b => $3, chg => $4 };
1181 if ($4 =~ /^(?:C|R)$/) {
1182 $state = 'file_a';
1183 } else {
1184 $state = 'file_b';
1185 }
1186 } elsif ($state eq 'file_a') {
1187 my $x = $mods[$#mods] or croak "Empty array\n";
1188 if ($x->{chg} !~ /^(?:C|R)$/) {
1189 croak "Error parsing $_, $x->{chg}\n";
1190 }
1191 $x->{file_a} = $_;
1192 $state = 'file_b';
1193 } elsif ($state eq 'file_b') {
1194 my $x = $mods[$#mods] or croak "Empty array\n";
1195 if (exists $x->{file_a} && $x->{chg} !~ /^(?:C|R)$/) {
1196 croak "Error parsing $_, $x->{chg}\n";
1197 }
1198 if (!exists $x->{file_a} && $x->{chg} =~ /^(?:C|R)$/) {
1199 croak "Error parsing $_, $x->{chg}\n";
1200 }
1201 $x->{file_b} = $_;
1202 $state = 'meta';
1203 } else {
1204 croak "Error parsing $_\n";
1205 }
1206 }
1207 command_close_pipe($diff_fh, $ctx);
1208 return \@mods;
1209 }
1210
1211 sub libsvn_checkout_tree {
1212 my ($from, $treeish, $ed) = @_;
1213 my $mods = get_diff($from, $treeish);
1214 return $mods unless (scalar @$mods);
1215 my %o = ( D => 1, R => 0, C => -1, A => 3, M => 3, T => 3 );
1216 foreach my $m (sort { $o{$a->{chg}} <=> $o{$b->{chg}} } @$mods) {
1217 my $f = $m->{chg};
1218 if (defined $o{$f}) {
1219 $ed->$f($m, $_q);
1220 } else {
1221 croak "Invalid change type: $f\n";
1222 }
1223 }
1224 $ed->rmdirs($_q) if $_rmdir;
1225 return $mods;
1226 }
1227
1228 sub get_commit_message {
1229 my ($commit, $commit_msg) = (@_);
1230 my %log_msg = ( msg => '' );
1231 open my $msg, '>', $commit_msg or croak $!;
1232
1233 my $type = command_oneline(qw/cat-file -t/, $commit);
1234 if ($type eq 'commit' || $type eq 'tag') {
1235 my ($msg_fh, $ctx) = command_output_pipe('cat-file',
1236 $type, $commit);
1237 my $in_msg = 0;
1238 while (<$msg_fh>) {
1239 if (!$in_msg) {
1240 $in_msg = 1 if (/^\s*$/);
1241 } elsif (/^git-svn-id: /) {
1242 # skip this, we regenerate the correct one
1243 # on re-fetch anyways
1244 } else {
1245 print $msg $_ or croak $!;
1246 }
1247 }
1248 command_close_pipe($msg_fh, $ctx);
1249 }
1250 close $msg or croak $!;
1251
1252 if ($_edit || ($type eq 'tree')) {
1253 my $editor = $ENV{VISUAL} || $ENV{EDITOR} || 'vi';
1254 system($editor, $commit_msg);
1255 }
1256
1257 # file_to_s removes all trailing newlines, so just use chomp() here:
1258 open $msg, '<', $commit_msg or croak $!;
1259 { local $/; chomp($log_msg{msg} = <$msg>); }
1260 close $msg or croak $!;
1261
1262 return \%log_msg;
1263 }
1264
1265 sub set_svn_commit_env {
1266 if (defined $LC_ALL) {
1267 $ENV{LC_ALL} = $LC_ALL;
1268 } else {
1269 delete $ENV{LC_ALL};
1270 }
1271 }
1272
1273 sub rev_list_raw {
1274 my ($fh, $c) = command_output_pipe(qw/rev-list --pretty=raw/, @_);
1275 return { fh => $fh, ctx => $c, t => { } };
1276 }
1277
1278 sub next_rev_list_entry {
1279 my $rl = shift;
1280 my $fh = $rl->{fh};
1281 my $x = $rl->{t};
1282 while (<$fh>) {
1283 if (/^commit ($sha1)$/o) {
1284 if ($x->{c}) {
1285 $rl->{t} = { c => $1 };
1286 return $x;
1287 } else {
1288 $x->{c} = $1;
1289 }
1290 } elsif (/^parent ($sha1)$/o) {
1291 $x->{p}->{$1} = 1;
1292 } elsif (s/^ //) {
1293 $x->{m} ||= '';
1294 $x->{m} .= $_;
1295 }
1296 }
1297 command_close_pipe($fh, $rl->{ctx});
1298 return ($x != $rl->{t}) ? $x : undef;
1299 }
1300
1301 sub s_to_file {
1302 my ($str, $file, $mode) = @_;
1303 open my $fd,'>',$file or croak $!;
1304 print $fd $str,"\n" or croak $!;
1305 close $fd or croak $!;
1306 chmod ($mode &~ umask, $file) if (defined $mode);
1307 }
1308
1309 sub file_to_s {
1310 my $file = shift;
1311 open my $fd,'<',$file or croak "$!: file: $file\n";
1312 local $/;
1313 my $ret = <$fd>;
1314 close $fd or croak $!;
1315 $ret =~ s/\s*$//s;
1316 return $ret;
1317 }
1318
1319 sub assert_revision_unknown {
1320 my $r = shift;
1321 if (my $c = revdb_get($REVDB, $r)) {
1322 croak "$r = $c already exists! Why are we refetching it?";
1323 }
1324 }
1325
1326 sub git_commit {
1327 my ($log_msg, @parents) = @_;
1328 assert_revision_unknown($log_msg->{revision});
1329 map_tree_joins() if (@_branch_from && !%tree_map);
1330
1331 my (@tmp_parents, @exec_parents, %seen_parent);
1332 if (my $lparents = $log_msg->{parents}) {
1333 @tmp_parents = @$lparents
1334 }
1335 # commit parents can be conditionally bound to a particular
1336 # svn revision via: "svn_revno=commit_sha1", filter them out here:
1337 foreach my $p (@parents) {
1338 next unless defined $p;
1339 if ($p =~ /^(\d+)=($sha1_short)$/o) {
1340 if ($1 == $log_msg->{revision}) {
1341 push @tmp_parents, $2;
1342 }
1343 } else {
1344 push @tmp_parents, $p if $p =~ /$sha1_short/o;
1345 }
1346 }
1347 my $tree = $log_msg->{tree};
1348 if (!defined $tree) {
1349 my $index = set_index($GIT_SVN_INDEX);
1350 $tree = command_oneline('write-tree');
1351 croak $? if $?;
1352 restore_index($index);
1353 }
1354 # just in case we clobber the existing ref, we still want that ref
1355 # as our parent:
1356 if (my $cur = verify_ref("refs/remotes/$GIT_SVN^0")) {
1357 chomp $cur;
1358 push @tmp_parents, $cur;
1359 }
1360
1361 if (exists $tree_map{$tree}) {
1362 foreach my $p (@{$tree_map{$tree}}) {
1363 my $skip;
1364 foreach (@tmp_parents) {
1365 # see if a common parent is found
1366 my $mb = eval { command('merge-base', $_, $p) };
1367 next if ($@ || $?);
1368 $skip = 1;
1369 last;
1370 }
1371 next if $skip;
1372 my ($url_p, $r_p, $uuid_p) = cmt_metadata($p);
1373 next if (($SVN_UUID eq $uuid_p) &&
1374 ($log_msg->{revision} > $r_p));
1375 next if (defined $url_p && defined $SVN_URL &&
1376 ($SVN_UUID eq $uuid_p) &&
1377 ($url_p eq $SVN_URL));
1378 push @tmp_parents, $p;
1379 }
1380 }
1381 foreach (@tmp_parents) {
1382 next if $seen_parent{$_};
1383 $seen_parent{$_} = 1;
1384 push @exec_parents, $_;
1385 # MAXPARENT is defined to 16 in commit-tree.c:
1386 last if @exec_parents > 16;
1387 }
1388
1389 set_commit_env($log_msg);
1390 my @exec = ('git-commit-tree', $tree);
1391 push @exec, '-p', $_ foreach @exec_parents;
1392 defined(my $pid = open3(my $msg_fh, my $out_fh, '>&STDERR', @exec))
1393 or croak $!;
1394 print $msg_fh $log_msg->{msg} or croak $!;
1395 unless ($_no_metadata) {
1396 print $msg_fh "\ngit-svn-id: $SVN_URL\@$log_msg->{revision}",
1397 " $SVN_UUID\n" or croak $!;
1398 }
1399 $msg_fh->flush == 0 or croak $!;
1400 close $msg_fh or croak $!;
1401 chomp(my $commit = do { local $/; <$out_fh> });
1402 close $out_fh or croak $!;
1403 waitpid $pid, 0;
1404 croak $? if $?;
1405 if ($commit !~ /^$sha1$/o) {
1406 die "Failed to commit, invalid sha1: $commit\n";
1407 }
1408 command_noisy('update-ref',"refs/remotes/$GIT_SVN",$commit);
1409 revdb_set($REVDB, $log_msg->{revision}, $commit);
1410
1411 # this output is read via pipe, do not change:
1412 print "r$log_msg->{revision} = $commit\n";
1413 return $commit;
1414 }
1415
1416 sub check_repack {
1417 if ($_repack && (--$_repack_nr == 0)) {
1418 $_repack_nr = $_repack;
1419 # repack doesn't use any arguments with spaces in them, does it?
1420 command_noisy('repack', split(/\s+/, $_repack_flags));
1421 }
1422 }
1423
1424 sub set_commit_env {
1425 my ($log_msg) = @_;
1426 my $author = $log_msg->{author};
1427 if (!defined $author || length $author == 0) {
1428 $author = '(no author)';
1429 }
1430 my ($name,$email) = defined $users{$author} ? @{$users{$author}}
1431 : ($author,"$author\@$SVN_UUID");
1432 $ENV{GIT_AUTHOR_NAME} = $ENV{GIT_COMMITTER_NAME} = $name;
1433 $ENV{GIT_AUTHOR_EMAIL} = $ENV{GIT_COMMITTER_EMAIL} = $email;
1434 $ENV{GIT_AUTHOR_DATE} = $ENV{GIT_COMMITTER_DATE} = $log_msg->{date};
1435 }
1436
1437 sub check_upgrade_needed {
1438 if (!-r $REVDB) {
1439 -d $GIT_SVN_DIR or mkpath([$GIT_SVN_DIR]);
1440 open my $fh, '>>',$REVDB or croak $!;
1441 close $fh;
1442 }
1443 return unless eval {
1444 command([qw/rev-parse --verify/,"$GIT_SVN-HEAD^0"],
1445 {STDERR => 0});
1446 };
1447 my $head = eval { command('rev-parse',"refs/remotes/$GIT_SVN") };
1448 if ($@ || !$head) {
1449 print STDERR "Please run: $0 rebuild --upgrade\n";
1450 exit 1;
1451 }
1452 }
1453
1454 # fills %tree_map with a reverse mapping of trees to commits. Useful
1455 # for finding parents to commit on.
1456 sub map_tree_joins {
1457 my %seen;
1458 foreach my $br (@_branch_from) {
1459 my $pipe = command_output_pipe(qw/rev-list
1460 --topo-order --pretty=raw/, $br);
1461 while (<$pipe>) {
1462 if (/^commit ($sha1)$/o) {
1463 my $commit = $1;
1464
1465 # if we've seen a commit,
1466 # we've seen its parents
1467 last if $seen{$commit};
1468 my ($tree) = (<$pipe> =~ /^tree ($sha1)$/o);
1469 unless (defined $tree) {
1470 die "Failed to parse commit $commit\n";
1471 }
1472 push @{$tree_map{$tree}}, $commit;
1473 $seen{$commit} = 1;
1474 }
1475 }
1476 eval { command_close_pipe($pipe) };
1477 }
1478 }
1479
1480 sub load_all_refs {
1481 if (@_branch_from) {
1482 print STDERR '--branch|-b parameters are ignored when ',
1483 "--branch-all-refs|-B is passed\n";
1484 }
1485
1486 # don't worry about rev-list on non-commit objects/tags,
1487 # it shouldn't blow up if a ref is a blob or tree...
1488 @_branch_from = command(qw/rev-parse --symbolic --all/);
1489 }
1490
1491 # '<svn username> = real-name <email address>' mapping based on git-svnimport:
1492 sub load_authors {
1493 open my $authors, '<', $_authors or die "Can't open $_authors $!\n";
1494 while (<$authors>) {
1495 chomp;
1496 next unless /^(\S+?|\(no author\))\s*=\s*(.+?)\s*<(.+)>\s*$/;
1497 my ($user, $name, $email) = ($1, $2, $3);
1498 $users{$user} = [$name, $email];
1499 }
1500 close $authors or croak $!;
1501 }
1502
1503 sub rload_authors {
1504 open my $authors, '<', $_authors or die "Can't open $_authors $!\n";
1505 while (<$authors>) {
1506 chomp;
1507 next unless /^(\S+?)\s*=\s*(.+?)\s*<(.+)>\s*$/;
1508 my ($user, $name, $email) = ($1, $2, $3);
1509 $rusers{"$name <$email>"} = $user;
1510 }
1511 close $authors or croak $!;
1512 }
1513
1514 sub git_svn_each {
1515 my $sub = shift;
1516 foreach (command(qw/rev-parse --symbolic --all/)) {
1517 next unless s#^refs/remotes/##;
1518 chomp $_;
1519 next unless -f "$GIT_DIR/svn/$_/info/url";
1520 &$sub($_);
1521 }
1522 }
1523
1524 sub migrate_revdb {
1525 git_svn_each(sub {
1526 my $id = shift;
1527 defined(my $pid = fork) or croak $!;
1528 if (!$pid) {
1529 $GIT_SVN = $ENV{GIT_SVN_ID} = $id;
1530 init_vars();
1531 exit 0 if -r $REVDB;
1532 print "Upgrading svn => git mapping...\n";
1533 -d $GIT_SVN_DIR or mkpath([$GIT_SVN_DIR]);
1534 open my $fh, '>>',$REVDB or croak $!;
1535 close $fh;
1536 rebuild();
1537 print "Done upgrading. You may now delete the ",
1538 "deprecated $GIT_SVN_DIR/revs directory\n";
1539 exit 0;
1540 }
1541 waitpid $pid, 0;
1542 croak $? if $?;
1543 });
1544 }
1545
1546 sub migration_check {
1547 migrate_revdb() unless (-e $REVDB);
1548 return if (-d "$GIT_DIR/svn" || !-d $GIT_DIR);
1549 print "Upgrading repository...\n";
1550 unless (-d "$GIT_DIR/svn") {
1551 mkdir "$GIT_DIR/svn" or croak $!;
1552 }
1553 print "Data from a previous version of git-svn exists, but\n\t",
1554 "$GIT_SVN_DIR\n\t(required for this version ",
1555 "($VERSION) of git-svn) does not.\n";
1556
1557 foreach my $x (command(qw/rev-parse --symbolic --all/)) {
1558 next unless $x =~ s#^refs/remotes/##;
1559 chomp $x;
1560 next unless -f "$GIT_DIR/$x/info/url";
1561 my $u = eval { file_to_s("$GIT_DIR/$x/info/url") };
1562 next unless $u;
1563 my $dn = dirname("$GIT_DIR/svn/$x");
1564 mkpath([$dn]) unless -d $dn;
1565 rename "$GIT_DIR/$x", "$GIT_DIR/svn/$x" or croak "$!: $x";
1566 }
1567 migrate_revdb() if (-d $GIT_SVN_DIR && !-w $REVDB);
1568 print "Done upgrading.\n";
1569 }
1570
1571 sub find_rev_before {
1572 my ($r, $id, $eq_ok) = @_;
1573 my $f = "$GIT_DIR/svn/$id/.rev_db";
1574 return (undef,undef) unless -r $f;
1575 --$r unless $eq_ok;
1576 while ($r > 0) {
1577 if (my $c = revdb_get($f, $r)) {
1578 return ($r, $c);
1579 }
1580 --$r;
1581 }
1582 return (undef, undef);
1583 }
1584
1585 sub init_vars {
1586 $GIT_SVN ||= $ENV{GIT_SVN_ID} || 'git-svn';
1587 $GIT_SVN_DIR = "$GIT_DIR/svn/$GIT_SVN";
1588 $REVDB = "$GIT_SVN_DIR/.rev_db";
1589 $GIT_SVN_INDEX = "$GIT_SVN_DIR/index";
1590 $SVN_URL = undef;
1591 $SVN_WC = "$GIT_SVN_DIR/tree";
1592 %tree_map = ();
1593 }
1594
1595 # convert GetOpt::Long specs for use by git-repo-config
1596 sub read_repo_config {
1597 return unless -d $GIT_DIR;
1598 my $opts = shift;
1599 foreach my $o (keys %$opts) {
1600 my $v = $opts->{$o};
1601 my ($key) = ($o =~ /^([a-z\-]+)/);
1602 $key =~ s/-//g;
1603 my $arg = 'git-repo-config';
1604 $arg .= ' --int' if ($o =~ /[:=]i$/);
1605 $arg .= ' --bool' if ($o !~ /[:=][sfi]$/);
1606 if (ref $v eq 'ARRAY') {
1607 chomp(my @tmp = `$arg --get-all svn.$key`);
1608 @$v = @tmp if @tmp;
1609 } else {
1610 chomp(my $tmp = `$arg --get svn.$key`);
1611 if ($tmp && !($arg =~ / --bool / && $tmp eq 'false')) {
1612 $$v = $tmp;
1613 }
1614 }
1615 }
1616 }
1617
1618 sub set_default_vals {
1619 if (defined $_repack) {
1620 $_repack = 1000 if ($_repack <= 0);
1621 $_repack_nr = $_repack;
1622 $_repack_flags ||= '-d';
1623 }
1624 }
1625
1626 sub read_grafts {
1627 my $gr_file = shift;
1628 my ($grafts, $comments) = ({}, {});
1629 if (open my $fh, '<', $gr_file) {
1630 my @tmp;
1631 while (<$fh>) {
1632 if (/^($sha1)\s+/) {
1633 my $c = $1;
1634 if (@tmp) {
1635 @{$comments->{$c}} = @tmp;
1636 @tmp = ();
1637 }
1638 foreach my $p (split /\s+/, $_) {
1639 $grafts->{$c}->{$p} = 1;
1640 }
1641 } else {
1642 push @tmp, $_;
1643 }
1644 }
1645 close $fh or croak $!;
1646 @{$comments->{'END'}} = @tmp if @tmp;
1647 }
1648 return ($grafts, $comments);
1649 }
1650
1651 sub write_grafts {
1652 my ($grafts, $comments, $gr_file) = @_;
1653
1654 open my $fh, '>', $gr_file or croak $!;
1655 foreach my $c (sort keys %$grafts) {
1656 if ($comments->{$c}) {
1657 print $fh $_ foreach @{$comments->{$c}};
1658 }
1659 my $p = $grafts->{$c};
1660 my %x; # real parents
1661 delete $p->{$c}; # commits are not self-reproducing...
1662 my $ch = command_output_pipe(qw/cat-file commit/, $c);
1663 while (<$ch>) {
1664 if (/^parent ($sha1)/) {
1665 $x{$1} = $p->{$1} = 1;
1666 } else {
1667 last unless /^\S/;
1668 }
1669 }
1670 eval { command_close_pipe($ch) }; # breaking the pipe
1671
1672 # if real parents are the only ones in the grafts, drop it
1673 next if join(' ',sort keys %$p) eq join(' ',sort keys %x);
1674
1675 my (@ip, @jp, $mb);
1676 my %del = %x;
1677 @ip = @jp = keys %$p;
1678 foreach my $i (@ip) {
1679 next if $del{$i} || $p->{$i} == 2;
1680 foreach my $j (@jp) {
1681 next if $i eq $j || $del{$j} || $p->{$j} == 2;
1682 $mb = eval { command('merge-base', $i, $j) };
1683 next unless $mb;
1684 chomp $mb;
1685 next if $x{$mb};
1686 if ($mb eq $j) {
1687 delete $p->{$i};
1688 $del{$i} = 1;
1689 } elsif ($mb eq $i) {
1690 delete $p->{$j};
1691 $del{$j} = 1;
1692 }
1693 }
1694 }
1695
1696 # if real parents are the only ones in the grafts, drop it
1697 next if join(' ',sort keys %$p) eq join(' ',sort keys %x);
1698
1699 print $fh $c, ' ', join(' ', sort keys %$p),"\n";
1700 }
1701 if ($comments->{'END'}) {
1702 print $fh $_ foreach @{$comments->{'END'}};
1703 }
1704 close $fh or croak $!;
1705 }
1706
1707 sub read_url_paths_all {
1708 my ($l_map, $pfx, $p) = @_;
1709 my @dir;
1710 foreach (<$p/*>) {
1711 if (-r "$_/info/url") {
1712 $pfx .= '/' if $pfx && $pfx !~ m!/$!;
1713 my $id = $pfx . basename $_;
1714 my $url = file_to_s("$_/info/url");
1715 my ($u, $p) = repo_path_split($url);
1716 $l_map->{$u}->{$p} = $id;
1717 } elsif (-d $_) {
1718 push @dir, $_;
1719 }
1720 }
1721 foreach (@dir) {
1722 my $x = $_;
1723 $x =~ s!^\Q$GIT_DIR\E/svn/!!o;
1724 read_url_paths_all($l_map, $x, $_);
1725 }
1726 }
1727
1728 # this one only gets ids that have been imported, not new ones
1729 sub read_url_paths {
1730 my $l_map = {};
1731 git_svn_each(sub { my $x = shift;
1732 my $url = file_to_s("$GIT_DIR/svn/$x/info/url");
1733 my ($u, $p) = repo_path_split($url);
1734 $l_map->{$u}->{$p} = $x;
1735 });
1736 return $l_map;
1737 }
1738
1739 sub extract_metadata {
1740 my $id = shift or return (undef, undef, undef);
1741 my ($url, $rev, $uuid) = ($id =~ /^git-svn-id:\s(\S+?)\@(\d+)
1742 \s([a-f\d\-]+)$/x);
1743 if (!defined $rev || !$uuid || !$url) {
1744 # some of the original repositories I made had
1745 # identifiers like this:
1746 ($rev, $uuid) = ($id =~/^git-svn-id:\s(\d+)\@([a-f\d\-]+)/);
1747 }
1748 return ($url, $rev, $uuid);
1749 }
1750
1751 sub cmt_metadata {
1752 return extract_metadata((grep(/^git-svn-id: /,
1753 command(qw/cat-file commit/, shift)))[-1]);
1754 }
1755
1756 sub get_commit_time {
1757 my $cmt = shift;
1758 my $fh = command_output_pipe(qw/rev-list --pretty=raw -n1/, $cmt);
1759 while (<$fh>) {
1760 /^committer\s(?:.+) (\d+) ([\-\+]?\d+)$/ or next;
1761 my ($s, $tz) = ($1, $2);
1762 if ($tz =~ s/^\+//) {
1763 $s += tz_to_s_offset($tz);
1764 } elsif ($tz =~ s/^\-//) {
1765 $s -= tz_to_s_offset($tz);
1766 }
1767 eval { command_close_pipe($fh) };
1768 return $s;
1769 }
1770 die "Can't get commit time for commit: $cmt\n";
1771 }
1772
1773 sub tz_to_s_offset {
1774 my ($tz) = @_;
1775 $tz =~ s/(\d\d)$//;
1776 return ($1 * 60) + ($tz * 3600);
1777 }
1778
1779 # adapted from pager.c
1780 sub config_pager {
1781 $_pager ||= $ENV{GIT_PAGER} || $ENV{PAGER};
1782 if (!defined $_pager) {
1783 $_pager = 'less';
1784 } elsif (length $_pager == 0 || $_pager eq 'cat') {
1785 $_pager = undef;
1786 }
1787 }
1788
1789 sub run_pager {
1790 return unless -t *STDOUT;
1791 pipe my $rfd, my $wfd or return;
1792 defined(my $pid = fork) or croak $!;
1793 if (!$pid) {
1794 open STDOUT, '>&', $wfd or croak $!;
1795 return;
1796 }
1797 open STDIN, '<&', $rfd or croak $!;
1798 $ENV{LESS} ||= 'FRSX';
1799 exec $_pager or croak "Can't run pager: $! ($_pager)\n";
1800 }
1801
1802 sub get_author_info {
1803 my ($dest, $author, $t, $tz) = @_;
1804 $author =~ s/(?:^\s*|\s*$)//g;
1805 $dest->{a_raw} = $author;
1806 my $_a;
1807 if ($_authors) {
1808 $_a = $rusers{$author} || undef;
1809 }
1810 if (!$_a) {
1811 ($_a) = ($author =~ /<([^>]+)\@[^>]+>$/);
1812 }
1813 $dest->{t} = $t;
1814 $dest->{tz} = $tz;
1815 $dest->{a} = $_a;
1816 # Date::Parse isn't in the standard Perl distro :(
1817 if ($tz =~ s/^\+//) {
1818 $t += tz_to_s_offset($tz);
1819 } elsif ($tz =~ s/^\-//) {
1820 $t -= tz_to_s_offset($tz);
1821 }
1822 $dest->{t_utc} = $t;
1823 }
1824
1825 sub process_commit {
1826 my ($c, $r_min, $r_max, $defer) = @_;
1827 if (defined $r_min && defined $r_max) {
1828 if ($r_min == $c->{r} && $r_min == $r_max) {
1829 show_commit($c);
1830 return 0;
1831 }
1832 return 1 if $r_min == $r_max;
1833 if ($r_min < $r_max) {
1834 # we need to reverse the print order
1835 return 0 if (defined $_limit && --$_limit < 0);
1836 push @$defer, $c;
1837 return 1;
1838 }
1839 if ($r_min != $r_max) {
1840 return 1 if ($r_min < $c->{r});
1841 return 1 if ($r_max > $c->{r});
1842 }
1843 }
1844 return 0 if (defined $_limit && --$_limit < 0);
1845 show_commit($c);
1846 return 1;
1847 }
1848
1849 sub show_commit {
1850 my $c = shift;
1851 if ($_oneline) {
1852 my $x = "\n";
1853 if (my $l = $c->{l}) {
1854 while ($l->[0] =~ /^\s*$/) { shift @$l }
1855 $x = $l->[0];
1856 }
1857 $_l_fmt ||= 'A' . length($c->{r});
1858 print 'r',pack($_l_fmt, $c->{r}),' | ';
1859 print "$c->{c} | " if $_show_commit;
1860 print $x;
1861 } else {
1862 show_commit_normal($c);
1863 }
1864 }
1865
1866 sub show_commit_changed_paths {
1867 my ($c) = @_;
1868 return unless $c->{changed};
1869 print "Changed paths:\n", @{$c->{changed}};
1870 }
1871
1872 sub show_commit_normal {
1873 my ($c) = @_;
1874 print '-' x72, "\nr$c->{r} | ";
1875 print "$c->{c} | " if $_show_commit;
1876 print "$c->{a} | ", strftime("%Y-%m-%d %H:%M:%S %z (%a, %d %b %Y)",
1877 localtime($c->{t_utc})), ' | ';
1878 my $nr_line = 0;
1879
1880 if (my $l = $c->{l}) {
1881 while ($l->[$#$l] eq "\n" && $#$l > 0
1882 && $l->[($#$l - 1)] eq "\n") {
1883 pop @$l;
1884 }
1885 $nr_line = scalar @$l;
1886 if (!$nr_line) {
1887 print "1 line\n\n\n";
1888 } else {
1889 if ($nr_line == 1) {
1890 $nr_line = '1 line';
1891 } else {
1892 $nr_line .= ' lines';
1893 }
1894 print $nr_line, "\n";
1895 show_commit_changed_paths($c);
1896 print "\n";
1897 print $_ foreach @$l;
1898 }
1899 } else {
1900 print "1 line\n";
1901 show_commit_changed_paths($c);
1902 print "\n";
1903
1904 }
1905 foreach my $x (qw/raw diff/) {
1906 if ($c->{$x}) {
1907 print "\n";
1908 print $_ foreach @{$c->{$x}}
1909 }
1910 }
1911 }
1912
1913 sub _simple_prompt {
1914 my ($cred, $realm, $default_username, $may_save, $pool) = @_;
1915 $may_save = undef if $_no_auth_cache;
1916 $default_username = $_username if defined $_username;
1917 if (defined $default_username && length $default_username) {
1918 if (defined $realm && length $realm) {
1919 print "Authentication realm: $realm\n";
1920 }
1921 $cred->username($default_username);
1922 } else {
1923 _username_prompt($cred, $realm, $may_save, $pool);
1924 }
1925 $cred->password(_read_password("Password for '" .
1926 $cred->username . "': ", $realm));
1927 $cred->may_save($may_save);
1928 $SVN::_Core::SVN_NO_ERROR;
1929 }
1930
1931 sub _ssl_server_trust_prompt {
1932 my ($cred, $realm, $failures, $cert_info, $may_save, $pool) = @_;
1933 $may_save = undef if $_no_auth_cache;
1934 print "Error validating server certificate for '$realm':\n";
1935 if ($failures & $SVN::Auth::SSL::UNKNOWNCA) {
1936 print " - The certificate is not issued by a trusted ",
1937 "authority. Use the\n",
1938 " fingerprint to validate the certificate manually!\n";
1939 }
1940 if ($failures & $SVN::Auth::SSL::CNMISMATCH) {
1941 print " - The certificate hostname does not match.\n";
1942 }
1943 if ($failures & $SVN::Auth::SSL::NOTYETVALID) {
1944 print " - The certificate is not yet valid.\n";
1945 }
1946 if ($failures & $SVN::Auth::SSL::EXPIRED) {
1947 print " - The certificate has expired.\n";
1948 }
1949 if ($failures & $SVN::Auth::SSL::OTHER) {
1950 print " - The certificate has an unknown error.\n";
1951 }
1952 printf( "Certificate information:\n".
1953 " - Hostname: %s\n".
1954 " - Valid: from %s until %s\n".
1955 " - Issuer: %s\n".
1956 " - Fingerprint: %s\n",
1957 map $cert_info->$_, qw(hostname valid_from valid_until
1958 issuer_dname fingerprint) );
1959 my $choice;
1960 prompt:
1961 print $may_save ?
1962 "(R)eject, accept (t)emporarily or accept (p)ermanently? " :
1963 "(R)eject or accept (t)emporarily? ";
1964 $choice = lc(substr(<STDIN> || 'R', 0, 1));
1965 if ($choice =~ /^t$/i) {
1966 $cred->may_save(undef);
1967 } elsif ($choice =~ /^r$/i) {
1968 return -1;
1969 } elsif ($may_save && $choice =~ /^p$/i) {
1970 $cred->may_save($may_save);
1971 } else {
1972 goto prompt;
1973 }
1974 $cred->accepted_failures($failures);
1975 $SVN::_Core::SVN_NO_ERROR;
1976 }
1977
1978 sub _ssl_client_cert_prompt {
1979 my ($cred, $realm, $may_save, $pool) = @_;
1980 $may_save = undef if $_no_auth_cache;
1981 print "Client certificate filename: ";
1982 chomp(my $filename = <STDIN>);
1983 $cred->cert_file($filename);
1984 $cred->may_save($may_save);
1985 $SVN::_Core::SVN_NO_ERROR;
1986 }
1987
1988 sub _ssl_client_cert_pw_prompt {
1989 my ($cred, $realm, $may_save, $pool) = @_;
1990 $may_save = undef if $_no_auth_cache;
1991 $cred->password(_read_password("Password: ", $realm));
1992 $cred->may_save($may_save);
1993 $SVN::_Core::SVN_NO_ERROR;
1994 }
1995
1996 sub _username_prompt {
1997 my ($cred, $realm, $may_save, $pool) = @_;
1998 $may_save = undef if $_no_auth_cache;
1999 if (defined $realm && length $realm) {
2000 print "Authentication realm: $realm\n";
2001 }
2002 my $username;
2003 if (defined $_username) {
2004 $username = $_username;
2005 } else {
2006 print "Username: ";
2007 chomp($username = <STDIN>);
2008 }
2009 $cred->username($username);
2010 $cred->may_save($may_save);
2011 $SVN::_Core::SVN_NO_ERROR;
2012 }
2013
2014 sub _read_password {
2015 my ($prompt, $realm) = @_;
2016 print $prompt;
2017 require Term::ReadKey;
2018 Term::ReadKey::ReadMode('noecho');
2019 my $password = '';
2020 while (defined(my $key = Term::ReadKey::ReadKey(0))) {
2021 last if $key =~ /[\012\015]/; # \n\r
2022 $password .= $key;
2023 }
2024 Term::ReadKey::ReadMode('restore');
2025 print "\n";
2026 $password;
2027 }
2028
2029 sub libsvn_connect {
2030 my ($url) = @_;
2031 SVN::_Core::svn_config_ensure($_config_dir, undef);
2032 my ($baton, $callbacks) = SVN::Core::auth_open_helper([
2033 SVN::Client::get_simple_provider(),
2034 SVN::Client::get_ssl_server_trust_file_provider(),
2035 SVN::Client::get_simple_prompt_provider(
2036 \&_simple_prompt, 2),
2037 SVN::Client::get_ssl_client_cert_prompt_provider(
2038 \&_ssl_client_cert_prompt, 2),
2039 SVN::Client::get_ssl_client_cert_pw_prompt_provider(
2040 \&_ssl_client_cert_pw_prompt, 2),
2041 SVN::Client::get_username_provider(),
2042 SVN::Client::get_ssl_server_trust_prompt_provider(
2043 \&_ssl_server_trust_prompt),
2044 SVN::Client::get_username_prompt_provider(
2045 \&_username_prompt, 2),
2046 ]);
2047 my $config = SVN::Core::config_get_config($_config_dir);
2048 my $ra = SVN::Ra->new(url => $url, auth => $baton,
2049 config => $config,
2050 pool => SVN::Pool->new,
2051 auth_provider_callbacks => $callbacks);
2052 $ra->{svn_path} = $url;
2053 $ra->{repos_root} = $ra->get_repos_root;
2054 $ra->{svn_path} =~ s#^\Q$ra->{repos_root}\E/*##;
2055 push @repo_path_split_cache, qr/^(\Q$ra->{repos_root}\E)/;
2056 return $ra;
2057 }
2058
2059 sub libsvn_can_do_switch {
2060 unless (defined $_svn_can_do_switch) {
2061 my $pool = SVN::Pool->new;
2062 my $rep = eval {
2063 $SVN->do_switch(1, '', 0, $SVN->{url},
2064 SVN::Delta::Editor->new, $pool);
2065 };
2066 if ($@) {
2067 $_svn_can_do_switch = 0;
2068 } else {
2069 $rep->abort_report($pool);
2070 $_svn_can_do_switch = 1;
2071 }
2072 $pool->clear;
2073 }
2074 $_svn_can_do_switch;
2075 }
2076
2077 sub libsvn_dup_ra {
2078 my ($ra) = @_;
2079 SVN::Ra->new(map { $_ => $ra->{$_} } qw/config url
2080 auth auth_provider_callbacks repos_root svn_path/);
2081 }
2082
2083 sub uri_encode {
2084 my ($f) = @_;
2085 $f =~ s#([^a-zA-Z0-9\*!\:_\./\-])#uc sprintf("%%%02x",ord($1))#eg;
2086 $f
2087 }
2088
2089 sub uri_decode {
2090 my ($f) = @_;
2091 $f =~ tr/+/ /;
2092 $f =~ s/%([A-F0-9]{2})/chr hex($1)/ge;
2093 $f
2094 }
2095
2096 sub libsvn_log_entry {
2097 my ($rev, $author, $date, $msg, $parents, $untracked) = @_;
2098 my ($Y,$m,$d,$H,$M,$S) = ($date =~ /^(\d{4})\-(\d\d)\-(\d\d)T
2099 (\d\d)\:(\d\d)\:(\d\d).\d+Z$/x)
2100 or die "Unable to parse date: $date\n";
2101 if (defined $author && length $author > 0 &&
2102 defined $_authors && ! defined $users{$author}) {
2103 die "Author: $author not defined in $_authors file\n";
2104 }
2105 $msg = '' if ($rev == 0 && !defined $msg);
2106
2107 open my $un, '>>', "$GIT_SVN_DIR/unhandled.log" or croak $!;
2108 my $h;
2109 print $un "r$rev\n" or croak $!;
2110 $h = $untracked->{empty};
2111 foreach (sort keys %$h) {
2112 my $act = $h->{$_} ? '+empty_dir' : '-empty_dir';
2113 print $un " $act: ", uri_encode($_), "\n" or croak $!;
2114 warn "W: $act: $_\n";
2115 }
2116 foreach my $t (qw/dir_prop file_prop/) {
2117 $h = $untracked->{$t} or next;
2118 foreach my $path (sort keys %$h) {
2119 my $ppath = $path eq '' ? '.' : $path;
2120 foreach my $prop (sort keys %{$h->{$path}}) {
2121 next if $SKIP{$prop};
2122 my $v = $h->{$path}->{$prop};
2123 if (defined $v) {
2124 print $un " +$t: ",
2125 uri_encode($ppath), ' ',
2126 uri_encode($prop), ' ',
2127 uri_encode($v), "\n"
2128 or croak $!;
2129 } else {
2130 print $un " -$t: ",
2131 uri_encode($ppath), ' ',
2132 uri_encode($prop), "\n"
2133 or croak $!;
2134 }
2135 }
2136 }
2137 }
2138 foreach my $t (qw/absent_file absent_directory/) {
2139 $h = $untracked->{$t} or next;
2140 foreach my $parent (sort keys %$h) {
2141 foreach my $path (sort @{$h->{$parent}}) {
2142 print $un " $t: ",
2143 uri_encode("$parent/$path"), "\n"
2144 or croak $!;
2145 warn "W: $t: $parent/$path ",
2146 "Insufficient permissions?\n";
2147 }
2148 }
2149 }
2150
2151 # revprops (make this optional? it's an extra network trip...)
2152 my $pool = SVN::Pool->new;
2153 my $rp = $SVN->rev_proplist($rev, $pool);
2154 foreach (sort keys %$rp) {
2155 next if /^svn:(?:author|date|log)$/;
2156 print $un " rev_prop: ", uri_encode($_), ' ',
2157 uri_encode($rp->{$_}), "\n";
2158 }
2159 $pool->clear;
2160 close $un or croak $!;
2161
2162 { revision => $rev, date => "+0000 $Y-$m-$d $H:$M:$S",
2163 author => $author, msg => $msg."\n", parents => $parents || [],
2164 revprops => $rp }
2165 }
2166
2167 sub process_rm {
2168 my ($gui, $last_commit, $f, $q) = @_;
2169 # remove entire directories.
2170 if (command('ls-tree',$last_commit,'--',$f) =~ /^040000 tree/) {
2171 my ($ls, $ctx) = command_output_pipe(qw/ls-tree
2172 -r --name-only -z/,
2173 $last_commit,'--',$f);
2174 local $/ = "\0";
2175 while (<$ls>) {
2176 print $gui '0 ',0 x 40,"\t",$_ or croak $!;
2177 print "\tD\t$_\n" unless $q;
2178 }
2179 print "\tD\t$f/\n" unless $q;
2180 command_close_pipe($ls, $ctx);
2181 return $SVN::Node::dir;
2182 } else {
2183 print $gui '0 ',0 x 40,"\t",$f,"\0" or croak $!;
2184 print "\tD\t$f\n" unless $q;
2185 return $SVN::Node::file;
2186 }
2187 }
2188
2189 sub libsvn_fetch {
2190 my ($last_commit, $paths, $rev, $author, $date, $msg) = @_;
2191 my $pool = SVN::Pool->new;
2192 my $ed = SVN::Git::Fetcher->new({ c => $last_commit, q => $_q });
2193 my $reporter = $SVN->do_update($rev, '', 1, $ed, $pool);
2194 my @lock = $SVN::Core::VERSION ge '1.2.0' ? (undef) : ();
2195 my (undef, $last_rev, undef) = cmt_metadata($last_commit);
2196 $reporter->set_path('', $last_rev, 0, @lock, $pool);
2197 $reporter->finish_report($pool);
2198 $pool->clear;
2199 unless ($ed->{git_commit_ok}) {
2200 die "SVN connection failed somewhere...\n";
2201 }
2202 libsvn_log_entry($rev, $author, $date, $msg, [$last_commit], $ed);
2203 }
2204
2205 sub svn_grab_base_rev {
2206 my $c = eval { command_oneline([qw/rev-parse --verify/,
2207 "refs/remotes/$GIT_SVN^0"],
2208 { STDERR => 0 }) };
2209 if (defined $c && length $c) {
2210 my ($url, $rev, $uuid) = cmt_metadata($c);
2211 return ($rev, $c) if defined $rev;
2212 }
2213 if ($_no_metadata) {
2214 my $offset = -41; # from tail
2215 my $rl;
2216 open my $fh, '<', $REVDB or
2217 die "--no-metadata specified and $REVDB not readable\n";
2218 seek $fh, $offset, 2;
2219 $rl = readline $fh;
2220 defined $rl or return (undef, undef);
2221 chomp $rl;
2222 while ($c ne $rl && tell $fh != 0) {
2223 $offset -= 41;
2224 seek $fh, $offset, 2;
2225 $rl = readline $fh;
2226 defined $rl or return (undef, undef);
2227 chomp $rl;
2228 }
2229 my $rev = tell $fh;
2230 croak $! if ($rev < -1);
2231 $rev = ($rev - 41) / 41;
2232 close $fh or croak $!;
2233 return ($rev, $c);
2234 }
2235 return (undef, undef);
2236 }
2237
2238 sub libsvn_parse_revision {
2239 my $base = shift;
2240 my $head = $SVN->get_latest_revnum();
2241 if (!defined $_revision || $_revision eq 'BASE:HEAD') {
2242 return ($base + 1, $head) if (defined $base);
2243 return (0, $head);
2244 }
2245 return ($1, $2) if ($_revision =~ /^(\d+):(\d+)$/);
2246 return ($_revision, $_revision) if ($_revision =~ /^\d+$/);
2247 if ($_revision =~ /^BASE:(\d+)$/) {
2248 return ($base + 1, $1) if (defined $base);
2249 return (0, $head);
2250 }
2251 return ($1, $head) if ($_revision =~ /^(\d+):HEAD$/);
2252 die "revision argument: $_revision not understood by git-svn\n",
2253 "Try using the command-line svn client instead\n";
2254 }
2255
2256 sub libsvn_traverse_ignore {
2257 my ($fh, $path, $r) = @_;
2258 $path =~ s#^/+##g;
2259 my $pool = SVN::Pool->new;
2260 my ($dirent, undef, $props) = $SVN->get_dir($path, $r, $pool);
2261 my $p = $path;
2262 $p =~ s#^\Q$SVN->{svn_path}\E/##;
2263 print $fh length $p ? "\n# $p\n" : "\n# /\n";
2264 if (my $s = $props->{'svn:ignore'}) {
2265 $s =~ s/[\r\n]+/\n/g;
2266 chomp $s;
2267 if (length $p == 0) {
2268 $s =~ s#\n#\n/$p#g;
2269 print $fh "/$s\n";
2270 } else {
2271 $s =~ s#\n#\n/$p/#g;
2272 print $fh "/$p/$s\n";
2273 }
2274 }
2275 foreach (sort keys %$dirent) {
2276 next if $dirent->{$_}->kind != $SVN::Node::dir;
2277 libsvn_traverse_ignore($fh, "$path/$_", $r);
2278 }
2279 $pool->clear;
2280 }
2281
2282 sub revisions_eq {
2283 my ($path, $r0, $r1) = @_;
2284 return 1 if $r0 == $r1;
2285 my $nr = 0;
2286 # should be OK to use Pool here (r1 - r0) should be small
2287 my $pool = SVN::Pool->new;
2288 libsvn_get_log($SVN, [$path], $r0, $r1,
2289 0, 0, 1, sub {$nr++}, $pool);
2290 $pool->clear;
2291 return 0 if ($nr > 1);
2292 return 1;
2293 }
2294
2295 sub libsvn_find_parent_branch {
2296 my ($paths, $rev, $author, $date, $msg) = @_;
2297 my $svn_path = '/'.$SVN->{svn_path};
2298
2299 # look for a parent from another branch:
2300 my $i = $paths->{$svn_path} or return;
2301 my $branch_from = $i->copyfrom_path or return;
2302 my $r = $i->copyfrom_rev;
2303 print STDERR "Found possible branch point: ",
2304 "$branch_from => $svn_path, $r\n";
2305 $branch_from =~ s#^/##;
2306 my $l_map = {};
2307 read_url_paths_all($l_map, '', "$GIT_DIR/svn");
2308 my $url = $SVN->{repos_root};
2309 defined $l_map->{$url} or return;
2310 my $id = $l_map->{$url}->{$branch_from};
2311 if (!defined $id && $_follow_parent) {
2312 print STDERR "Following parent: $branch_from\@$r\n";
2313 # auto create a new branch and follow it
2314 $id = basename($branch_from);
2315 $id .= '@'.$r if -r "$GIT_DIR/svn/$id";
2316 while (-r "$GIT_DIR/svn/$id") {
2317 # just grow a tail if we're not unique enough :x
2318 $id .= '-';
2319 }
2320 }
2321 return unless defined $id;
2322
2323 my ($r0, $parent) = find_rev_before($r,$id,1);
2324 if ($_follow_parent && (!defined $r0 || !defined $parent)) {
2325 defined(my $pid = fork) or croak $!;
2326 if (!$pid) {
2327 $GIT_SVN = $ENV{GIT_SVN_ID} = $id;
2328 init_vars();
2329 $SVN_URL = "$url/$branch_from";
2330 $SVN = undef;
2331 setup_git_svn();
2332 # we can't assume SVN_URL exists at r+1:
2333 $_revision = "0:$r";
2334 fetch_lib();
2335 exit 0;
2336 }
2337 waitpid $pid, 0;
2338 croak $? if $?;
2339 ($r0, $parent) = find_rev_before($r,$id,1);
2340 }
2341 return unless (defined $r0 && defined $parent);
2342 if (revisions_eq($branch_from, $r0, $r)) {
2343 unlink $GIT_SVN_INDEX;
2344 print STDERR "Found branch parent: ($GIT_SVN) $parent\n";
2345 command_noisy('read-tree', $parent);
2346 unless (libsvn_can_do_switch()) {
2347 return _libsvn_new_tree($paths, $rev, $author, $date,
2348 $msg, [$parent]);
2349 }
2350 # do_switch works with svn/trunk >= r22312, but that is not
2351 # included with SVN 1.4.2 (the latest version at the moment),
2352 # so we can't rely on it.
2353 my $ra = libsvn_connect("$url/$branch_from");
2354 my $ed = SVN::Git::Fetcher->new({c => $parent, q => $_q });
2355 my $pool = SVN::Pool->new;
2356 my $reporter = $ra->do_switch($rev, '', 1, $SVN->{url},
2357 $ed, $pool);
2358 my @lock = $SVN::Core::VERSION ge '1.2.0' ? (undef) : ();
2359 $reporter->set_path('', $r0, 0, @lock, $pool);
2360 $reporter->finish_report($pool);
2361 $pool->clear;
2362 unless ($ed->{git_commit_ok}) {
2363 die "SVN connection failed somewhere...\n";
2364 }
2365 return libsvn_log_entry($rev, $author, $date, $msg, [$parent]);
2366 }
2367 print STDERR "Nope, branch point not imported or unknown\n";
2368 return undef;
2369 }
2370
2371 sub libsvn_get_log {
2372 my ($ra, @args) = @_;
2373 $args[4]-- if $args[4] && ! $_follow_parent;
2374 if ($SVN::Core::VERSION le '1.2.0') {
2375 splice(@args, 3, 1);
2376 }
2377 $ra->get_log(@args);
2378 }
2379
2380 sub libsvn_new_tree {
2381 if (my $log_entry = libsvn_find_parent_branch(@_)) {
2382 return $log_entry;
2383 }
2384 my ($paths, $rev, $author, $date, $msg) = @_; # $pool is last
2385 _libsvn_new_tree($paths, $rev, $author, $date, $msg, []);
2386 }
2387
2388 sub _libsvn_new_tree {
2389 my ($paths, $rev, $author, $date, $msg, $parents) = @_;
2390 my $pool = SVN::Pool->new;
2391 my $ed = SVN::Git::Fetcher->new({q => $_q});
2392 my $reporter = $SVN->do_update($rev, '', 1, $ed, $pool);
2393 my @lock = $SVN::Core::VERSION ge '1.2.0' ? (undef) : ();
2394 $reporter->set_path('', $rev, 1, @lock, $pool);
2395 $reporter->finish_report($pool);
2396 $pool->clear;
2397 unless ($ed->{git_commit_ok}) {
2398 die "SVN connection failed somewhere...\n";
2399 }
2400 libsvn_log_entry($rev, $author, $date, $msg, $parents, $ed);
2401 }
2402
2403 sub find_graft_path_commit {
2404 my ($tree_paths, $p1, $r1) = @_;
2405 foreach my $x (keys %$tree_paths) {
2406 next unless ($p1 =~ /^\Q$x\E/);
2407 my $i = $tree_paths->{$x};
2408 my ($r0, $parent) = find_rev_before($r1,$i,1);
2409 return $parent if (defined $r0 && $r0 == $r1);
2410 print STDERR "r$r1 of $i not imported\n";
2411 next;
2412 }
2413 return undef;
2414 }
2415
2416 sub find_graft_path_parents {
2417 my ($grafts, $tree_paths, $c, $p0, $r0) = @_;
2418 foreach my $x (keys %$tree_paths) {
2419 next unless ($p0 =~ /^\Q$x\E/);
2420 my $i = $tree_paths->{$x};
2421 my ($r, $parent) = find_rev_before($r0, $i, 1);
2422 if (defined $r && defined $parent && revisions_eq($x,$r,$r0)) {
2423 my ($url_b, undef, $uuid_b) = cmt_metadata($c);
2424 my ($url_a, undef, $uuid_a) = cmt_metadata($parent);
2425 next if ($url_a && $url_b && $url_a eq $url_b &&
2426 $uuid_b eq $uuid_a);
2427 $grafts->{$c}->{$parent} = 1;
2428 }
2429 }
2430 }
2431
2432 sub libsvn_graft_file_copies {
2433 my ($grafts, $tree_paths, $path, $paths, $rev) = @_;
2434 foreach (keys %$paths) {
2435 my $i = $paths->{$_};
2436 my ($m, $p0, $r0) = ($i->action, $i->copyfrom_path,
2437 $i->copyfrom_rev);
2438 next unless (defined $p0 && defined $r0);
2439
2440 my $p1 = $_;
2441 $p1 =~ s#^/##;
2442 $p0 =~ s#^/##;
2443 my $c = find_graft_path_commit($tree_paths, $p1, $rev);
2444 next unless $c;
2445 find_graft_path_parents($grafts, $tree_paths, $c, $p0, $r0);
2446 }
2447 }
2448
2449 sub set_index {
2450 my $old = $ENV{GIT_INDEX_FILE};
2451 $ENV{GIT_INDEX_FILE} = shift;
2452 return $old;
2453 }
2454
2455 sub restore_index {
2456 my ($old) = @_;
2457 if (defined $old) {
2458 $ENV{GIT_INDEX_FILE} = $old;
2459 } else {
2460 delete $ENV{GIT_INDEX_FILE};
2461 }
2462 }
2463
2464 sub libsvn_commit_cb {
2465 my ($rev, $date, $committer, $c, $msg, $r_last, $cmt_last) = @_;
2466 if ($_optimize_commits && $rev == ($r_last + 1)) {
2467 my $log = libsvn_log_entry($rev,$committer,$date,$msg);
2468 $log->{tree} = get_tree_from_treeish($c);
2469 my $cmt = git_commit($log, $cmt_last, $c);
2470 my @diff = command('diff-tree', $cmt, $c);
2471 if (@diff) {
2472 print STDERR "Trees differ: $cmt $c\n",
2473 join('',@diff),"\n";
2474 exit 1;
2475 }
2476 } else {
2477 fetch("$rev=$c");
2478 }
2479 }
2480
2481 sub libsvn_ls_fullurl {
2482 my $fullurl = shift;
2483 my $ra = libsvn_connect($fullurl);
2484 my @ret;
2485 my $pool = SVN::Pool->new;
2486 my $r = defined $_revision ? $_revision : $ra->get_latest_revnum;
2487 my ($dirent, undef, undef) = $ra->get_dir('', $r, $pool);
2488 foreach my $d (sort keys %$dirent) {
2489 if ($dirent->{$d}->kind == $SVN::Node::dir) {
2490 push @ret, "$d/"; # add '/' for compat with cli svn
2491 }
2492 }
2493 $pool->clear;
2494 return @ret;
2495 }
2496
2497
2498 sub libsvn_skip_unknown_revs {
2499 my $err = shift;
2500 my $errno = $err->apr_err();
2501 # Maybe the branch we're tracking didn't
2502 # exist when the repo started, so it's
2503 # not an error if it doesn't, just continue
2504 #
2505 # Wonderfully consistent library, eh?
2506 # 160013 - svn:// and file://
2507 # 175002 - http(s)://
2508 # 175007 - http(s):// (this repo required authorization, too...)
2509 # More codes may be discovered later...
2510 if ($errno == 175007 || $errno == 175002 || $errno == 160013) {
2511 return;
2512 }
2513 croak "Error from SVN, ($errno): ", $err->expanded_message,"\n";
2514 };
2515
2516 # Tie::File seems to be prone to offset errors if revisions get sparse,
2517 # it's not that fast, either. Tie::File is also not in Perl 5.6. So
2518 # one of my favorite modules is out :< Next up would be one of the DBM
2519 # modules, but I'm not sure which is most portable... So I'll just
2520 # go with something that's plain-text, but still capable of
2521 # being randomly accessed. So here's my ultra-simple fixed-width
2522 # database. All records are 40 characters + "\n", so it's easy to seek
2523 # to a revision: (41 * rev) is the byte offset.
2524 # A record of 40 0s denotes an empty revision.
2525 # And yes, it's still pretty fast (faster than Tie::File).
2526 sub revdb_set {
2527 my ($file, $rev, $commit) = @_;
2528 length $commit == 40 or croak "arg3 must be a full SHA1 hexsum\n";
2529 open my $fh, '+<', $file or croak $!;
2530 my $offset = $rev * 41;
2531 # assume that append is the common case:
2532 seek $fh, 0, 2 or croak $!;
2533 my $pos = tell $fh;
2534 if ($pos < $offset) {
2535 print $fh (('0' x 40),"\n") x (($offset - $pos) / 41);
2536 }
2537 seek $fh, $offset, 0 or croak $!;
2538 print $fh $commit,"\n";
2539 close $fh or croak $!;
2540 }
2541
2542 sub revdb_get {
2543 my ($file, $rev) = @_;
2544 my $ret;
2545 my $offset = $rev * 41;
2546 open my $fh, '<', $file or croak $!;
2547 seek $fh, $offset, 0;
2548 if (tell $fh == $offset) {
2549 $ret = readline $fh;
2550 if (defined $ret) {
2551 chomp $ret;
2552 $ret = undef if ($ret =~ /^0{40}$/);
2553 }
2554 }
2555 close $fh or croak $!;
2556 return $ret;
2557 }
2558
2559 sub copy_remote_ref {
2560 my $origin = $_cp_remote ? $_cp_remote : 'origin';
2561 my $ref = "refs/remotes/$GIT_SVN";
2562 if (command('ls-remote', $origin, $ref)) {
2563 command_noisy('fetch', $origin, "$ref:$ref");
2564 } elsif ($_cp_remote && !$_upgrade) {
2565 die "Unable to find remote reference: ",
2566 "refs/remotes/$GIT_SVN on $origin\n";
2567 }
2568 }
2569
2570 {
2571 my $kill_stupid_warnings = $SVN::Node::none.$SVN::Node::file.
2572 $SVN::Node::dir.$SVN::Node::unknown.
2573 $SVN::Node::none.$SVN::Node::file.
2574 $SVN::Node::dir.$SVN::Node::unknown.
2575 $SVN::Auth::SSL::CNMISMATCH.
2576 $SVN::Auth::SSL::NOTYETVALID.
2577 $SVN::Auth::SSL::EXPIRED.
2578 $SVN::Auth::SSL::UNKNOWNCA.
2579 $SVN::Auth::SSL::OTHER;
2580 }
2581
2582 package SVN::Git::Fetcher;
2583 use vars qw/@ISA/;
2584 use strict;
2585 use warnings;
2586 use Carp qw/croak/;
2587 use IO::File qw//;
2588 use Git qw/command command_oneline command_noisy
2589 command_output_pipe command_input_pipe command_close_pipe/;
2590
2591 # file baton members: path, mode_a, mode_b, pool, fh, blob, base
2592 sub new {
2593 my ($class, $git_svn) = @_;
2594 my $self = SVN::Delta::Editor->new;
2595 bless $self, $class;
2596 $self->{c} = $git_svn->{c} if exists $git_svn->{c};
2597 $self->{q} = $git_svn->{q};
2598 $self->{empty} = {};
2599 $self->{dir_prop} = {};
2600 $self->{file_prop} = {};
2601 $self->{absent_dir} = {};
2602 $self->{absent_file} = {};
2603 ($self->{gui}, $self->{ctx}) = command_input_pipe(
2604 qw/update-index -z --index-info/);
2605 require Digest::MD5;
2606 $self;
2607 }
2608
2609 sub open_root {
2610 { path => '' };
2611 }
2612
2613 sub open_directory {
2614 my ($self, $path, $pb, $rev) = @_;
2615 { path => $path };
2616 }
2617
2618 sub delete_entry {
2619 my ($self, $path, $rev, $pb) = @_;
2620 my $t = process_rm($self->{gui}, $self->{c}, $path, $self->{q});
2621 $self->{empty}->{$path} = 0 if $t == $SVN::Node::dir;
2622 undef;
2623 }
2624
2625 sub open_file {
2626 my ($self, $path, $pb, $rev) = @_;
2627 my ($mode, $blob) = (command('ls-tree', $self->{c}, '--',$path)
2628 =~ /^(\d{6}) blob ([a-f\d]{40})\t/);
2629 unless (defined $mode && defined $blob) {
2630 die "$path was not found in commit $self->{c} (r$rev)\n";
2631 }
2632 { path => $path, mode_a => $mode, mode_b => $mode, blob => $blob,
2633 pool => SVN::Pool->new, action => 'M' };
2634 }
2635
2636 sub add_file {
2637 my ($self, $path, $pb, $cp_path, $cp_rev) = @_;
2638 my ($dir, $file) = ($path =~ m#^(.*?)/?([^/]+)$#);
2639 delete $self->{empty}->{$dir};
2640 { path => $path, mode_a => 100644, mode_b => 100644,
2641 pool => SVN::Pool->new, action => 'A' };
2642 }
2643
2644 sub add_directory {
2645 my ($self, $path, $cp_path, $cp_rev) = @_;
2646 my ($dir, $file) = ($path =~ m#^(.*?)/?([^/]+)$#);
2647 delete $self->{empty}->{$dir};
2648 $self->{empty}->{$path} = 1;
2649 { path => $path };
2650 }
2651
2652 sub change_dir_prop {
2653 my ($self, $db, $prop, $value) = @_;
2654 $self->{dir_prop}->{$db->{path}} ||= {};
2655 $self->{dir_prop}->{$db->{path}}->{$prop} = $value;
2656 undef;
2657 }
2658
2659 sub absent_directory {
2660 my ($self, $path, $pb) = @_;
2661 $self->{absent_dir}->{$pb->{path}} ||= [];
2662 push @{$self->{absent_dir}->{$pb->{path}}}, $path;
2663 undef;
2664 }
2665
2666 sub absent_file {
2667 my ($self, $path, $pb) = @_;
2668 $self->{absent_file}->{$pb->{path}} ||= [];
2669 push @{$self->{absent_file}->{$pb->{path}}}, $path;
2670 undef;
2671 }
2672
2673 sub change_file_prop {
2674 my ($self, $fb, $prop, $value) = @_;
2675 if ($prop eq 'svn:executable') {
2676 if ($fb->{mode_b} != 120000) {
2677 $fb->{mode_b} = defined $value ? 100755 : 100644;
2678 }
2679 } elsif ($prop eq 'svn:special') {
2680 $fb->{mode_b} = defined $value ? 120000 : 100644;
2681 } else {
2682 $self->{file_prop}->{$fb->{path}} ||= {};
2683 $self->{file_prop}->{$fb->{path}}->{$prop} = $value;
2684 }
2685 undef;
2686 }
2687
2688 sub apply_textdelta {
2689 my ($self, $fb, $exp) = @_;
2690 my $fh = IO::File->new_tmpfile;
2691 $fh->autoflush(1);
2692 # $fh gets auto-closed() by SVN::TxDelta::apply(),
2693 # (but $base does not,) so dup() it for reading in close_file
2694 open my $dup, '<&', $fh or croak $!;
2695 my $base = IO::File->new_tmpfile;
2696 $base->autoflush(1);
2697 if ($fb->{blob}) {
2698 defined (my $pid = fork) or croak $!;
2699 if (!$pid) {
2700 open STDOUT, '>&', $base or croak $!;
2701 print STDOUT 'link ' if ($fb->{mode_a} == 120000);
2702 exec qw/git-cat-file blob/, $fb->{blob} or croak $!;
2703 }
2704 waitpid $pid, 0;
2705 croak $? if $?;
2706
2707 if (defined $exp) {
2708 seek $base, 0, 0 or croak $!;
2709 my $md5 = Digest::MD5->new;
2710 $md5->addfile($base);
2711 my $got = $md5->hexdigest;
2712 die "Checksum mismatch: $fb->{path} $fb->{blob}\n",
2713 "expected: $exp\n",
2714 " got: $got\n" if ($got ne $exp);
2715 }
2716 }
2717 seek $base, 0, 0 or croak $!;
2718 $fb->{fh} = $dup;
2719 $fb->{base} = $base;
2720 [ SVN::TxDelta::apply($base, $fh, undef, $fb->{path}, $fb->{pool}) ];
2721 }
2722
2723 sub close_file {
2724 my ($self, $fb, $exp) = @_;
2725 my $hash;
2726 my $path = $fb->{path};
2727 if (my $fh = $fb->{fh}) {
2728 seek($fh, 0, 0) or croak $!;
2729 my $md5 = Digest::MD5->new;
2730 $md5->addfile($fh);
2731 my $got = $md5->hexdigest;
2732 die "Checksum mismatch: $path\n",
2733 "expected: $exp\n got: $got\n" if ($got ne $exp);
2734 seek($fh, 0, 0) or croak $!;
2735 if ($fb->{mode_b} == 120000) {
2736 read($fh, my $buf, 5) == 5 or croak $!;
2737 $buf eq 'link ' or die "$path has mode 120000",
2738 "but is not a link\n";
2739 }
2740 defined(my $pid = open my $out,'-|') or die "Can't fork: $!\n";
2741 if (!$pid) {
2742 open STDIN, '<&', $fh or croak $!;
2743 exec qw/git-hash-object -w --stdin/ or croak $!;
2744 }
2745 chomp($hash = do { local $/; <$out> });
2746 close $out or croak $!;
2747 close $fh or croak $!;
2748 $hash =~ /^[a-f\d]{40}$/ or die "not a sha1: $hash\n";
2749 close $fb->{base} or croak $!;
2750 } else {
2751 $hash = $fb->{blob} or die "no blob information\n";
2752 }
2753 $fb->{pool}->clear;
2754 my $gui = $self->{gui};
2755 print $gui "$fb->{mode_b} $hash\t$path\0" or croak $!;
2756 print "\t$fb->{action}\t$path\n" if $fb->{action} && ! $self->{q};
2757 undef;
2758 }
2759
2760 sub abort_edit {
2761 my $self = shift;
2762 eval { command_close_pipe($self->{gui}, $self->{ctx}) };
2763 $self->SUPER::abort_edit(@_);
2764 }
2765
2766 sub close_edit {
2767 my $self = shift;
2768 command_close_pipe($self->{gui}, $self->{ctx});
2769 $self->{git_commit_ok} = 1;
2770 $self->SUPER::close_edit(@_);
2771 }
2772
2773 package SVN::Git::Editor;
2774 use vars qw/@ISA/;
2775 use strict;
2776 use warnings;
2777 use Carp qw/croak/;
2778 use IO::File;
2779 use Git qw/command command_oneline command_noisy
2780 command_output_pipe command_input_pipe command_close_pipe/;
2781
2782 sub new {
2783 my $class = shift;
2784 my $git_svn = shift;
2785 my $self = SVN::Delta::Editor->new(@_);
2786 bless $self, $class;
2787 foreach (qw/svn_path c r ra /) {
2788 die "$_ required!\n" unless (defined $git_svn->{$_});
2789 $self->{$_} = $git_svn->{$_};
2790 }
2791 $self->{pool} = SVN::Pool->new;
2792 $self->{bat} = { '' => $self->open_root($self->{r}, $self->{pool}) };
2793 $self->{rm} = { };
2794 require Digest::MD5;
2795 return $self;
2796 }
2797
2798 sub split_path {
2799 return ($_[0] =~ m#^(.*?)/?([^/]+)$#);
2800 }
2801
2802 sub repo_path {
2803 (defined $_[1] && length $_[1]) ? $_[1] : ''
2804 }
2805
2806 sub url_path {
2807 my ($self, $path) = @_;
2808 $self->{ra}->{url} . '/' . $self->repo_path($path);
2809 }
2810
2811 sub rmdirs {
2812 my ($self, $q) = @_;
2813 my $rm = $self->{rm};
2814 delete $rm->{''}; # we never delete the url we're tracking
2815 return unless %$rm;
2816
2817 foreach (keys %$rm) {
2818 my @d = split m#/#, $_;
2819 my $c = shift @d;
2820 $rm->{$c} = 1;
2821 while (@d) {
2822 $c .= '/' . shift @d;
2823 $rm->{$c} = 1;
2824 }
2825 }
2826 delete $rm->{$self->{svn_path}};
2827 delete $rm->{''}; # we never delete the url we're tracking
2828 return unless %$rm;
2829
2830 my ($fh, $ctx) = command_output_pipe(
2831 qw/ls-tree --name-only -r -z/, $self->{c});
2832 local $/ = "\0";
2833 while (<$fh>) {
2834 chomp;
2835 my @dn = split m#/#, $_;
2836 while (pop @dn) {
2837 delete $rm->{join '/', @dn};
2838 }
2839 unless (%$rm) {
2840 eval { command_close_pipe($fh) };
2841 return;
2842 }
2843 }
2844 command_close_pipe($fh, $ctx);
2845
2846 my ($r, $p, $bat) = ($self->{r}, $self->{pool}, $self->{bat});
2847 foreach my $d (sort { $b =~ tr#/#/# <=> $a =~ tr#/#/# } keys %$rm) {
2848 $self->close_directory($bat->{$d}, $p);
2849 my ($dn) = ($d =~ m#^(.*?)/?(?:[^/]+)$#);
2850 print "\tD+\t/$d/\n" unless $q;
2851 $self->SUPER::delete_entry($d, $r, $bat->{$dn}, $p);
2852 delete $bat->{$d};
2853 }
2854 }
2855
2856 sub open_or_add_dir {
2857 my ($self, $full_path, $baton) = @_;
2858 my $p = SVN::Pool->new;
2859 my $t = $self->{ra}->check_path($full_path, $self->{r}, $p);
2860 $p->clear;
2861 if ($t == $SVN::Node::none) {
2862 return $self->add_directory($full_path, $baton,
2863 undef, -1, $self->{pool});
2864 } elsif ($t == $SVN::Node::dir) {
2865 return $self->open_directory($full_path, $baton,
2866 $self->{r}, $self->{pool});
2867 }
2868 print STDERR "$full_path already exists in repository at ",
2869 "r$self->{r} and it is not a directory (",
2870 ($t == $SVN::Node::file ? 'file' : 'unknown'),"/$t)\n";
2871 exit 1;
2872 }
2873
2874 sub ensure_path {
2875 my ($self, $path) = @_;
2876 my $bat = $self->{bat};
2877 $path = $self->repo_path($path);
2878 return $bat->{''} unless (length $path);
2879 my @p = split m#/+#, $path;
2880 my $c = shift @p;
2881 $bat->{$c} ||= $self->open_or_add_dir($c, $bat->{''});
2882 while (@p) {
2883 my $c0 = $c;
2884 $c .= '/' . shift @p;
2885 $bat->{$c} ||= $self->open_or_add_dir($c, $bat->{$c0});
2886 }
2887 return $bat->{$c};
2888 }
2889
2890 sub A {
2891 my ($self, $m, $q) = @_;
2892 my ($dir, $file) = split_path($m->{file_b});
2893 my $pbat = $self->ensure_path($dir);
2894 my $fbat = $self->add_file($self->repo_path($m->{file_b}), $pbat,
2895 undef, -1);
2896 print "\tA\t$m->{file_b}\n" unless $q;
2897 $self->chg_file($fbat, $m);
2898 $self->close_file($fbat,undef,$self->{pool});
2899 }
2900
2901 sub C {
2902 my ($self, $m, $q) = @_;
2903 my ($dir, $file) = split_path($m->{file_b});
2904 my $pbat = $self->ensure_path($dir);
2905 my $fbat = $self->add_file($self->repo_path($m->{file_b}), $pbat,
2906 $self->url_path($m->{file_a}), $self->{r});
2907 print "\tC\t$m->{file_a} => $m->{file_b}\n" unless $q;
2908 $self->chg_file($fbat, $m);
2909 $self->close_file($fbat,undef,$self->{pool});
2910 }
2911
2912 sub delete_entry {
2913 my ($self, $path, $pbat) = @_;
2914 my $rpath = $self->repo_path($path);
2915 my ($dir, $file) = split_path($rpath);
2916 $self->{rm}->{$dir} = 1;
2917 $self->SUPER::delete_entry($rpath, $self->{r}, $pbat, $self->{pool});
2918 }
2919
2920 sub R {
2921 my ($self, $m, $q) = @_;
2922 my ($dir, $file) = split_path($m->{file_b});
2923 my $pbat = $self->ensure_path($dir);
2924 my $fbat = $self->add_file($self->repo_path($m->{file_b}), $pbat,
2925 $self->url_path($m->{file_a}), $self->{r});
2926 print "\tR\t$m->{file_a} => $m->{file_b}\n" unless $q;
2927 $self->chg_file($fbat, $m);
2928 $self->close_file($fbat,undef,$self->{pool});
2929
2930 ($dir, $file) = split_path($m->{file_a});
2931 $pbat = $self->ensure_path($dir);
2932 $self->delete_entry($m->{file_a}, $pbat);
2933 }
2934
2935 sub M {
2936 my ($self, $m, $q) = @_;
2937 my ($dir, $file) = split_path($m->{file_b});
2938 my $pbat = $self->ensure_path($dir);
2939 my $fbat = $self->open_file($self->repo_path($m->{file_b}),
2940 $pbat,$self->{r},$self->{pool});
2941 print "\t$m->{chg}\t$m->{file_b}\n" unless $q;
2942 $self->chg_file($fbat, $m);
2943 $self->close_file($fbat,undef,$self->{pool});
2944 }
2945
2946 sub T { shift->M(@_) }
2947
2948 sub change_file_prop {
2949 my ($self, $fbat, $pname, $pval) = @_;
2950 $self->SUPER::change_file_prop($fbat, $pname, $pval, $self->{pool});
2951 }
2952
2953 sub chg_file {
2954 my ($self, $fbat, $m) = @_;
2955 if ($m->{mode_b} =~ /755$/ && $m->{mode_a} !~ /755$/) {
2956 $self->change_file_prop($fbat,'svn:executable','*');
2957 } elsif ($m->{mode_b} !~ /755$/ && $m->{mode_a} =~ /755$/) {
2958 $self->change_file_prop($fbat,'svn:executable',undef);
2959 }
2960 my $fh = IO::File->new_tmpfile or croak $!;
2961 if ($m->{mode_b} =~ /^120/) {
2962 print $fh 'link ' or croak $!;
2963 $self->change_file_prop($fbat,'svn:special','*');
2964 } elsif ($m->{mode_a} =~ /^120/ && $m->{mode_b} !~ /^120/) {
2965 $self->change_file_prop($fbat,'svn:special',undef);
2966 }
2967 defined(my $pid = fork) or croak $!;
2968 if (!$pid) {
2969 open STDOUT, '>&', $fh or croak $!;
2970 exec qw/git-cat-file blob/, $m->{sha1_b} or croak $!;
2971 }
2972 waitpid $pid, 0;
2973 croak $? if $?;
2974 $fh->flush == 0 or croak $!;
2975 seek $fh, 0, 0 or croak $!;
2976
2977 my $md5 = Digest::MD5->new;
2978 $md5->addfile($fh) or croak $!;
2979 seek $fh, 0, 0 or croak $!;
2980
2981 my $exp = $md5->hexdigest;
2982 my $pool = SVN::Pool->new;
2983 my $atd = $self->apply_textdelta($fbat, undef, $pool);
2984 my $got = SVN::TxDelta::send_stream($fh, @$atd, $pool);
2985 die "Checksum mismatch\nexpected: $exp\ngot: $got\n" if ($got ne $exp);
2986 $pool->clear;
2987
2988 close $fh or croak $!;
2989 }
2990
2991 sub D {
2992 my ($self, $m, $q) = @_;
2993 my ($dir, $file) = split_path($m->{file_b});
2994 my $pbat = $self->ensure_path($dir);
2995 print "\tD\t$m->{file_b}\n" unless $q;
2996 $self->delete_entry($m->{file_b}, $pbat);
2997 }
2998
2999 sub close_edit {
3000 my ($self) = @_;
3001 my ($p,$bat) = ($self->{pool}, $self->{bat});
3002 foreach (sort { $b =~ tr#/#/# <=> $a =~ tr#/#/# } keys %$bat) {
3003 $self->close_directory($bat->{$_}, $p);
3004 }
3005 $self->SUPER::close_edit($p);
3006 $p->clear;
3007 }
3008
3009 sub abort_edit {
3010 my ($self) = @_;
3011 $self->SUPER::abort_edit($self->{pool});
3012 $self->{pool}->clear;
3013 }
3014
3015 __END__
3016
3017 Data structures:
3018
3019 $log_msg hashref as returned by libsvn_log_entry()
3020 {
3021 msg => 'whitespace-formatted log entry
3022 ', # trailing newline is preserved
3023 revision => '8', # integer
3024 date => '2004-02-24T17:01:44.108345Z', # commit date
3025 author => 'committer name'
3026 };
3027
3028 @mods = array of diff-index line hashes, each element represents one line
3029 of diff-index output
3030
3031 diff-index line ($m hash)
3032 {
3033 mode_a => first column of diff-index output, no leading ':',
3034 mode_b => second column of diff-index output,
3035 sha1_b => sha1sum of the final blob,
3036 chg => change type [MCRADT],
3037 file_a => original file name of a file (iff chg is 'C' or 'R')
3038 file_b => new/current file name of a file (any chg)
3039 }
3040 ;
3041
3042 # retval of read_url_paths{,_all}();
3043 $l_map = {
3044 # repository root url
3045 'https://svn.musicpd.org' => {
3046 # repository path # GIT_SVN_ID
3047 'mpd/trunk' => 'trunk',
3048 'mpd/tags/0.11.5' => 'tags/0.11.5',
3049 },
3050 }
3051
3052 Notes:
3053 I don't trust the each() function on unless I created %hash myself
3054 because the internal iterator may not have started at base.
Jonathan Nieder’s miscellaneous git branches