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 $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$VERSION = '@@GIT_VERSION@@';
12use Cwd qw/abs_path/;
14$GIT_DIR = abs_path($ENV{GIT_DIR} || '.git');
15$ENV{GIT_DIR} = $GIT_DIR;
16my $LC_ALL = $ENV{LC_ALL};
18my $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# properties that we do not log:
25my %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);
33sub fatal (@) { print STDERR @_; exit 1 }
35require SVN::Core; # use()-ing this causes segfaults for me... *shrug*
36require SVN::Ra;
37require SVN::Delta;
38if ($SVN::Core::VERSION lt '1.1.0') {
39 fatal "Need SVN::Core 1.1.0 or better (got $SVN::Core::VERSION)\n";
40}
41push @SVN::Git::Editor::ISA, 'SVN::Delta::Editor';
42push @SVN::Git::Fetcher::ISA, 'SVN::Delta::Editor';
43*SVN::Git::Fetcher::process_rm = *process_rm;
44use Carp qw/croak/;
45use IO::File qw//;
46use File::Basename qw/dirname basename/;
47use File::Path qw/mkpath/;
48use Getopt::Long qw/:config gnu_getopt no_ignore_case auto_abbrev pass_through/;
49use POSIX qw/strftime/;
50use IPC::Open3;
51use Memoize;
52use Git qw/command command_oneline command_noisy
53 command_output_pipe command_input_pipe command_close_pipe/;
54memoize('revisions_eq');
55memoize('cmt_metadata');
56memoize('get_commit_time');
57my ($SVN);
59my $_optimize_commits = 1 unless $ENV{GIT_SVN_NO_OPTIMIZE_COMMITS};
61my $sha1 = qr/[a-f\d]{40}/;
62my $sha1_short = qr/[a-f\d]{4,40}/;
63my $_esc_color = qr/(?:\033\[(?:(?:\d+;)*\d*)?m)*/;
64my ($_revision,$_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, $_xfer_delta,
73 $_pager, $_color);
74my (@_branch_from, %tree_map, %users, %rusers, %equiv);
75my ($_svn_can_do_switch);
76my @repo_path_split_cache;
77my %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);
91my ($_trunk, $_tags, $_branches);
93my %multi_opts = ( 'trunk|T=s' => \$_trunk,
94 'tags|t=s' => \$_tags,
95 'branches|b=s' => \$_branches );
96my %init_opts = ( 'template=s' => \$_template, 'shared' => \$_shared );
97my %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);
103my %cmd = (
105 fetch => [ \&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);
159my $cmd;
161for (my $i = 0; $i < @ARGV; $i++) {
162 if (defined $cmd{$ARGV[$i]}) {
163 $cmd = $ARGV[$i];
164 splice @ARGV, $i, 1;
165 last;
166 }
167};
168my %opts = %{$cmd{$cmd}->[2]} if (defined $cmd);
170read_repo_config(\%opts);
172my $rv = GetOptions(%opts, 'help|H|h' => \$_help,
173 'version|V' => \$_version,
174 'id|i=s' => \$GIT_SVN);
175exit 1 if (!$rv && $cmd ne 'log');
176set_default_vals();
178usage(0) if $_help;
179version() if $_version;
180usage(1) unless defined $cmd;
181init_vars();
182load_authors() if $_authors;
183load_all_refs() if $_branch_all_refs;
184migration_check() unless $cmd =~ /^(?:init|rebuild|multi-init|commit-diff)$/;
185$cmd{$cmd}->[0]->(@ARGV);
186exit 0;
187####################### primary functions ######################
189sub usage {
190 my $exit = shift || 0;
191 my $fd = $exit ? \*STDERR : \*STDOUT;
192 print $fd <<"";
193git-svn - bidirectional operations between a single Subversion tree and git
194Usage: $0 <command> [options] [arguments]\n
195 print $fd "Available commands:\n" unless $cmd;
197 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
211arbitrary identifier if you're tracking multiple SVN branches/repositories in
212one git repository and want to keep them separate. See git-svn(1) for more
213information.
214 exit $exit;
216}
217sub version {
219 print "git-svn version $VERSION\n";
220 exit 0;
221}
222sub rebuild {
224 if (!verify_ref("refs/remotes/$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 $GIT_SVN-HEAD");
232 } else {
233 check_upgrade_needed();
234 }
235 my ($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 # 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 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}
272sub 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 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 $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}
295sub fetch {
297 check_upgrade_needed();
298 $SVN_URL ||= file_to_s("$GIT_SVN_DIR/info/url");
299 my $ret = fetch_lib(@_);
300 if ($ret->{commit} && !verify_ref('refs/heads/master^0')) {
301 command_noisy(qw(update-ref refs/heads/master),$ret->{commit});
302 }
303 return $ret;
304}
305sub fetch_lib {
307 my (@parents) = @_;
308 $SVN_URL ||= file_to_s("$GIT_SVN_DIR/info/url");
309 $SVN ||= libsvn_connect($SVN_URL);
310 my ($last_rev, $last_commit) = svn_grab_base_rev();
311 my ($base, $head) = libsvn_parse_revision($last_rev);
312 if ($base > $head) {
313 return { revision => $last_rev, commit => $last_commit }
314 }
315 my $index = set_index($GIT_SVN_INDEX);
316 # limit ourselves and also fork() since get_log won't release memory
318 # after processing a revision and SVN stuff seems to leak
319 my $inc = 1000;
320 my ($min, $max) = ($base, $head < $base+$inc ? $head : $base+$inc);
321 read_uuid();
322 if (defined $last_commit) {
323 unless (-e $GIT_SVN_INDEX) {
324 command_noisy('read-tree', $last_commit);
325 }
326 my $x = command_oneline('write-tree');
327 my ($y) = (command(qw/cat-file commit/, $last_commit)
328 =~ /^tree ($sha1)/m);
329 if ($y ne $x) {
330 unlink $GIT_SVN_INDEX or croak $!;
331 command_noisy('read-tree', $last_commit);
332 }
333 $x = command_oneline('write-tree');
334 if ($y ne $x) {
335 print STDERR "trees ($last_commit) $y != $x\n",
336 "Something is seriously wrong...\n";
337 }
338 }
339 while (1) {
340 # fork, because using SVN::Pool with get_log() still doesn't
341 # seem to help enough to keep memory usage down.
342 defined(my $pid = fork) or croak $!;
343 if (!$pid) {
344 $SVN::Error::handler = \&libsvn_skip_unknown_revs;
345 # Yes I'm perfectly aware that the fourth argument
347 # below is the limit revisions number. Unfortunately
348 # performance sucks with it enabled, so it's much
349 # faster to fetch revision ranges instead of relying
350 # on the limiter.
351 libsvn_get_log(libsvn_dup_ra($SVN), [''],
352 $min, $max, 0, 1, 1,
353 sub {
354 my $log_msg;
355 if ($last_commit) {
356 $log_msg = libsvn_fetch(
357 $last_commit, @_);
358 $last_commit = git_commit(
359 $log_msg,
360 $last_commit,
361 @parents);
362 } else {
363 $log_msg = libsvn_new_tree(@_);
364 $last_commit = git_commit(
365 $log_msg, @parents);
366 }
367 });
368 exit 0;
369 }
370 waitpid $pid, 0;
371 croak $? if $?;
372 ($last_rev, $last_commit) = svn_grab_base_rev();
373 last if ($max >= $head);
374 $min = $max + 1;
375 $max += $inc;
376 $max = $head if ($max > $head);
377 $SVN = libsvn_connect($SVN_URL);
378 }
379 restore_index($index);
380 return { revision => $last_rev, commit => $last_commit };
381}
382sub commit {
384 my (@commits) = @_;
385 check_upgrade_needed();
386 if ($_stdin || !@commits) {
387 print "Reading from stdin...\n";
388 @commits = ();
389 while (<STDIN>) {
390 if (/\b($sha1_short)\b/o) {
391 unshift @commits, $1;
392 }
393 }
394 }
395 my @revs;
396 foreach my $c (@commits) {
397 my @tmp = command('rev-parse',$c);
398 if (scalar @tmp == 1) {
399 push @revs, $tmp[0];
400 } elsif (scalar @tmp > 1) {
401 push @revs, reverse(command('rev-list',@tmp));
402 } else {
403 die "Failed to rev-parse $c\n";
404 }
405 }
406 commit_lib(@revs);
407 print "Done committing ",scalar @revs," revisions to SVN\n";
408}
409sub commit_lib {
411 my (@revs) = @_;
412 my ($r_last, $cmt_last) = svn_grab_base_rev();
413 defined $r_last or die "Must have an existing revision to commit\n";
414 my $fetched = fetch();
415 if ($r_last != $fetched->{revision}) {
416 print STDERR "There are new revisions that were fetched ",
417 "and need to be merged (or acknowledged) ",
418 "before committing.\n",
419 "last rev: $r_last\n",
420 " current: $fetched->{revision}\n";
421 exit 1;
422 }
423 read_uuid();
424 my @lock = $SVN::Core::VERSION ge '1.2.0' ? (undef, 0) : ();
425 my $commit_msg = "$GIT_SVN_DIR/.svn-commit.tmp.$$";
426 my $repo;
428 set_svn_commit_env();
429 foreach my $c (@revs) {
430 my $log_msg = get_commit_message($c, $commit_msg);
431 # fork for each commit because there's a memory leak I
433 # can't track down... (it's probably in the SVN code)
434 defined(my $pid = open my $fh, '-|') or croak $!;
435 if (!$pid) {
436 my $ed = SVN::Git::Editor->new(
437 { r => $r_last,
438 ra => libsvn_dup_ra($SVN),
439 c => $c,
440 svn_path => $SVN->{svn_path},
441 },
442 $SVN->get_commit_editor(
443 $log_msg->{msg},
444 sub {
445 libsvn_commit_cb(
446 @_, $c,
447 $log_msg->{msg},
448 $r_last,
449 $cmt_last)
450 },
451 @lock)
452 );
453 my $mods = libsvn_checkout_tree($cmt_last, $c, $ed);
454 if (@$mods == 0) {
455 print "No changes\nr$r_last = $cmt_last\n";
456 $ed->abort_edit;
457 } else {
458 $ed->close_edit;
459 }
460 exit 0;
461 }
462 my ($r_new, $cmt_new, $no);
463 while (<$fh>) {
464 print $_;
465 chomp;
466 if (/^r(\d+) = ($sha1)$/o) {
467 ($r_new, $cmt_new) = ($1, $2);
468 } elsif ($_ eq 'No changes') {
469 $no = 1;
470 }
471 }
472 close $fh or exit 1;
473 if (! defined $r_new && ! defined $cmt_new) {
474 unless ($no) {
475 die "Failed to parse revision information\n";
476 }
477 } else {
478 ($r_last, $cmt_last) = ($r_new, $cmt_new);
479 }
480 }
481 $ENV{LC_ALL} = 'C';
482 unlink $commit_msg;
483}
484sub dcommit {
486 my $head = shift || 'HEAD';
487 my $gs = "refs/remotes/$GIT_SVN";
488 my @refs = command(qw/rev-list --no-merges/, "$gs..$head");
489 my $last_rev;
490 foreach my $d (reverse @refs) {
491 if (!verify_ref("$d~1")) {
492 die "Commit $d\n",
493 "has no parent commit, and therefore ",
494 "nothing to diff against.\n",
495 "You should be working from a repository ",
496 "originally created by git-svn\n";
497 }
498 unless (defined $last_rev) {
499 (undef, $last_rev, undef) = cmt_metadata("$d~1");
500 unless (defined $last_rev) {
501 die "Unable to extract revision information ",
502 "from commit $d~1\n";
503 }
504 }
505 if ($_dry_run) {
506 print "diff-tree $d~1 $d\n";
507 } else {
508 if (my $r = commit_diff("$d~1", $d, undef, $last_rev)) {
509 $last_rev = $r;
510 } # else: no changes, same $last_rev
511 }
512 }
513 return if $_dry_run;
514 fetch();
515 my @diff = command('diff-tree', 'HEAD', $gs, '--');
516 my @finish;
517 if (@diff) {
518 @finish = qw/rebase/;
519 push @finish, qw/--merge/ if $_merge;
520 push @finish, "--strategy=$_strategy" if $_strategy;
521 print STDERR "W: HEAD and $gs differ, using @finish:\n", @diff;
522 } else {
523 print "No changes between current HEAD and $gs\n",
524 "Resetting to the latest $gs\n";
525 @finish = qw/reset --mixed/;
526 }
527 command_noisy(@finish, $gs);
528}
529sub show_ignore {
531 $SVN_URL ||= file_to_s("$GIT_SVN_DIR/info/url");
532 my $repo;
533 $SVN ||= libsvn_connect($SVN_URL);
534 my $r = defined $_revision ? $_revision : $SVN->get_latest_revnum;
535 libsvn_traverse_ignore(\*STDOUT, $SVN->{svn_path}, $r);
536}
537sub graft_branches {
539 my $gr_file = "$GIT_DIR/info/grafts";
540 my ($grafts, $comments) = read_grafts($gr_file);
541 my $gr_sha1;
542 if (%$grafts) {
544 # temporarily disable our grafts file to make this idempotent
545 chomp($gr_sha1 = command(qw/hash-object -w/,$gr_file));
546 rename $gr_file, "$gr_file~$gr_sha1" or croak $!;
547 }
548 my $l_map = read_url_paths();
550 my @re = map { qr/$_/is } @_opt_m if @_opt_m;
551 unless ($_no_default_regex) {
552 push @re, (qr/\b(?:merge|merging|merged)\s+with\s+([\w\.\-]+)/i,
553 qr/\b(?:merge|merging|merged)\s+([\w\.\-]+)/i,
554 qr/\b(?:from|of)\s+([\w\.\-]+)/i );
555 }
556 foreach my $u (keys %$l_map) {
557 if (@re) {
558 foreach my $p (keys %{$l_map->{$u}}) {
559 graft_merge_msg($grafts,$l_map,$u,$p,@re);
560 }
561 }
562 unless ($_no_graft_copy) {
563 graft_file_copy_lib($grafts,$l_map,$u);
564 }
565 }
566 graft_tree_joins($grafts);
567 write_grafts($grafts, $comments, $gr_file);
569 unlink "$gr_file~$gr_sha1" if $gr_sha1;
570}
571sub multi_init {
573 my $url = shift;
574 $_trunk ||= 'trunk';
575 $_trunk =~ s#/+$##;
576 $url =~ s#/+$## if $url;
577 if ($_trunk !~ m#^[a-z\+]+://#) {
578 $_trunk = '/' . $_trunk if ($_trunk !~ m#^/#);
579 unless ($url) {
580 print STDERR "E: '$_trunk' is not a complete URL ",
581 "and a separate URL is not specified\n";
582 exit 1;
583 }
584 $_trunk = $url . $_trunk;
585 }
586 my $ch_id;
587 if ($GIT_SVN eq 'git-svn') {
588 $ch_id = 1;
589 $GIT_SVN = $ENV{GIT_SVN_ID} = 'trunk';
590 }
591 init_vars();
592 unless (-d $GIT_SVN_DIR) {
593 print "GIT_SVN_ID set to 'trunk' for $_trunk\n" if $ch_id;
594 init($_trunk);
595 command_noisy('repo-config', 'svn.trunk', $_trunk);
596 }
597 complete_url_ls_init($url, $_branches, '--branches/-b', '');
598 complete_url_ls_init($url, $_tags, '--tags/-t', 'tags/');
599}
600sub multi_fetch {
602 # try to do trunk first, since branches/tags
603 # may be descended from it.
604 if (-e "$GIT_DIR/svn/trunk/info/url") {
605 fetch_child_id('trunk', @_);
606 }
607 rec_fetch('', "$GIT_DIR/svn", @_);
608}
609sub show_log {
611 my (@args) = @_;
612 my ($r_min, $r_max);
613 my $r_last = -1; # prevent dupes
614 rload_authors() if $_authors;
615 if (defined $TZ) {
616 $ENV{TZ} = $TZ;
617 } else {
618 delete $ENV{TZ};
619 }
620 if (defined $_revision) {
621 if ($_revision =~ /^(\d+):(\d+)$/) {
622 ($r_min, $r_max) = ($1, $2);
623 } elsif ($_revision =~ /^\d+$/) {
624 $r_min = $r_max = $_revision;
625 } else {
626 print STDERR "-r$_revision is not supported, use ",
627 "standard \'git log\' arguments instead\n";
628 exit 1;
629 }
630 }
631 config_pager();
633 @args = (git_svn_log_cmd($r_min, $r_max), @args);
634 my $log = command_output_pipe(@args);
635 run_pager();
636 my (@k, $c, $d);
637 while (<$log>) {
639 if (/^${_esc_color}commit ($sha1_short)/o) {
640 my $cmt = $1;
641 if ($c && cmt_showable($c) && $c->{r} != $r_last) {
642 $r_last = $c->{r};
643 process_commit($c, $r_min, $r_max, \@k) or
644 goto out;
645 }
646 $d = undef;
647 $c = { c => $cmt };
648 } elsif (/^${_esc_color}author (.+) (\d+) ([\-\+]?\d+)$/) {
649 get_author_info($c, $1, $2, $3);
650 } elsif (/^${_esc_color}(?:tree|parent|committer) /) {
651 # ignore
652 } elsif (/^${_esc_color}:\d{6} \d{6} $sha1_short/o) {
653 push @{$c->{raw}}, $_;
654 } elsif (/^${_esc_color}[ACRMDT]\t/) {
655 # we could add $SVN->{svn_path} here, but that requires
656 # remote access at the moment (repo_path_split)...
657 s#^(${_esc_color})([ACRMDT])\t#$1 $2 #;
658 push @{$c->{changed}}, $_;
659 } elsif (/^${_esc_color}diff /) {
660 $d = 1;
661 push @{$c->{diff}}, $_;
662 } elsif ($d) {
663 push @{$c->{diff}}, $_;
664 } elsif (/^${_esc_color} (git-svn-id:.+)$/) {
665 ($c->{url}, $c->{r}, undef) = extract_metadata($1);
666 } elsif (s/^${_esc_color} //) {
667 push @{$c->{l}}, $_;
668 }
669 }
670 if ($c && defined $c->{r} && $c->{r} != $r_last) {
671 $r_last = $c->{r};
672 process_commit($c, $r_min, $r_max, \@k);
673 }
674 if (@k) {
675 my $swap = $r_max;
676 $r_max = $r_min;
677 $r_min = $swap;
678 process_commit($_, $r_min, $r_max) foreach reverse @k;
679 }
680out:
681 eval { command_close_pipe($log) };
682 print '-' x72,"\n" unless $_incremental || $_oneline;
683}
684sub commit_diff_usage {
686 print STDERR "Usage: $0 commit-diff <tree-ish> <tree-ish> [<URL>]\n";
687 exit 1
688}
689sub commit_diff {
691 my $ta = shift or commit_diff_usage();
692 my $tb = shift or commit_diff_usage();
693 if (!eval { $SVN_URL = shift || file_to_s("$GIT_SVN_DIR/info/url") }) {
694 print STDERR "Needed URL or usable git-svn id command-line\n";
695 commit_diff_usage();
696 }
697 my $r = shift;
698 unless (defined $r) {
699 if (defined $_revision) {
700 $r = $_revision
701 } else {
702 die "-r|--revision is a required argument\n";
703 }
704 }
705 if (defined $_message && defined $_file) {
706 print STDERR "Both --message/-m and --file/-F specified ",
707 "for the commit message.\n",
708 "I have no idea what you mean\n";
709 exit 1;
710 }
711 if (defined $_file) {
712 $_message = file_to_s($_file);
713 } else {
714 $_message ||= get_commit_message($tb,
715 "$GIT_DIR/.svn-commit.tmp.$$")->{msg};
716 }
717 $SVN ||= libsvn_connect($SVN_URL);
718 if ($r eq 'HEAD') {
719 $r = $SVN->get_latest_revnum;
720 } elsif ($r !~ /^\d+$/) {
721 die "revision argument: $r not understood by git-svn\n";
722 }
723 my @lock = $SVN::Core::VERSION ge '1.2.0' ? (undef, 0) : ();
724 my $rev_committed;
725 my $ed = SVN::Git::Editor->new({ r => $r,
726 ra => libsvn_dup_ra($SVN),
727 c => $tb,
728 svn_path => $SVN->{svn_path}
729 },
730 $SVN->get_commit_editor($_message,
731 sub {
732 $rev_committed = $_[0];
733 print "Committed $_[0]\n";
734 }, @lock)
735 );
736 eval {
737 my $mods = libsvn_checkout_tree($ta, $tb, $ed);
738 if (@$mods == 0) {
739 print "No changes\n$ta == $tb\n";
740 $ed->abort_edit;
741 } else {
742 $ed->close_edit;
743 }
744 };
745 fatal "$@\n" if $@;
746 $_message = $_file = undef;
747 return $rev_committed;
748}
749########################### utility functions #########################
751sub cmt_showable {
753 my ($c) = @_;
754 return 1 if defined $c->{r};
755 if ($c->{l} && $c->{l}->[-1] eq "...\n" &&
756 $c->{a_raw} =~ /\@([a-f\d\-]+)>$/) {
757 my @msg = command(qw/cat-file commit/, $c->{c});
758 shift @msg while ($msg[0] ne "\n");
759 shift @msg;
760 @{$c->{l}} = grep !/^git-svn-id: /, @msg;
761 (undef, $c->{r}, undef) = extract_metadata(
763 (grep(/^git-svn-id: /, @msg))[-1]);
764 }
765 return defined $c->{r};
766}
767sub log_use_color {
769 return 1 if $_color;
770 my ($dc, $dcvar);
771 $dcvar = 'color.diff';
772 $dc = `git-repo-config --get $dcvar`;
773 if ($dc eq '') {
774 # nothing at all; fallback to "diff.color"
775 $dcvar = 'diff.color';
776 $dc = `git-repo-config --get $dcvar`;
777 }
778 chomp($dc);
779 if ($dc eq 'auto') {
780 my $pc;
781 $pc = `git-repo-config --get color.pager`;
782 if ($pc eq '') {
783 # does not have it -- fallback to pager.color
784 $pc = `git-repo-config --bool --get pager.color`;
785 }
786 else {
787 $pc = `git-repo-config --bool --get color.pager`;
788 if ($?) {
789 $pc = 'false';
790 }
791 }
792 chomp($pc);
793 if (-t *STDOUT || (defined $_pager && $pc eq 'true')) {
794 return ($ENV{TERM} && $ENV{TERM} ne 'dumb');
795 }
796 return 0;
797 }
798 return 0 if $dc eq 'never';
799 return 1 if $dc eq 'always';
800 chomp($dc = `git-repo-config --bool --get $dcvar`);
801 return ($dc eq 'true');
802}
803sub git_svn_log_cmd {
805 my ($r_min, $r_max) = @_;
806 my @cmd = (qw/log --abbrev-commit --pretty=raw
807 --default/, "refs/remotes/$GIT_SVN");
808 push @cmd, '-r' unless $_non_recursive;
809 push @cmd, qw/--raw --name-status/ if $_verbose;
810 push @cmd, '--color' if log_use_color();
811 return @cmd unless defined $r_max;
812 if ($r_max == $r_min) {
813 push @cmd, '--max-count=1';
814 if (my $c = revdb_get($REVDB, $r_max)) {
815 push @cmd, $c;
816 }
817 } else {
818 my ($c_min, $c_max);
819 $c_max = revdb_get($REVDB, $r_max);
820 $c_min = revdb_get($REVDB, $r_min);
821 if (defined $c_min && defined $c_max) {
822 if ($r_max > $r_max) {
823 push @cmd, "$c_min..$c_max";
824 } else {
825 push @cmd, "$c_max..$c_min";
826 }
827 } elsif ($r_max > $r_min) {
828 push @cmd, $c_max;
829 } else {
830 push @cmd, $c_min;
831 }
832 }
833 return @cmd;
834}
835sub fetch_child_id {
837 my $id = shift;
838 print "Fetching $id\n";
839 my $ref = "$GIT_DIR/refs/remotes/$id";
840 defined(my $pid = open my $fh, '-|') or croak $!;
841 if (!$pid) {
842 $_repack = undef;
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/);
851 }
852 close $fh or croak $?;
853}
854sub rec_fetch {
856 my ($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, $_);
872 }
873}
874sub complete_url_ls_init {
876 my ($url, $var, $switch, $pfx) = @_;
877 unless ($var) {
878 print STDERR "W: $switch not specified\n";
879 return;
880 }
881 $var =~ s#/+$##;
882 if ($var !~ m#^[a-z\+]+://#) {
883 $var = '/' . $var if ($var !~ m#^/#);
884 unless ($url) {
885 print STDERR "E: '$var' is not a complete URL ",
886 "and a separate URL is not specified\n";
887 exit 1;
888 }
889 $var = $url . $var;
890 }
891 my @ls = libsvn_ls_fullurl($var);
892 my $old = $GIT_SVN;
893 defined(my $pid = fork) or croak $!;
894 if (!$pid) {
895 foreach my $u (map { "$var/$_" } (grep m!/$!, @ls)) {
896 $u =~ s#/+$##;
897 if ($u !~ m!\Q$var\E/(.+)$!) {
898 print STDERR "W: Unrecognized URL: $u\n";
899 die "This should never happen\n";
900 }
901 # don't try to init already existing refs
902 my $id = $pfx.$1;
903 $GIT_SVN = $ENV{GIT_SVN_ID} = $id;
904 init_vars();
905 unless (-d $GIT_SVN_DIR) {
906 print "init $u => $id\n";
907 init($u);
908 }
909 }
910 exit 0;
911 }
912 waitpid $pid, 0;
913 croak $? if $?;
914 my ($n) = ($switch =~ /^--(\w+)/);
915 command_noisy('repo-config', "svn.$n", $var);
916}
917sub common_prefix {
919 my $paths = shift;
920 my %common;
921 foreach (@$paths) {
922 my @tmp = split m#/#, $_;
923 my $p = '';
924 while (my $x = shift @tmp) {
925 $p .= "/$x";
926 $common{$p} ||= 0;
927 $common{$p}++;
928 }
929 }
930 foreach (sort {length $b <=> length $a} keys %common) {
931 if ($common{$_} == @$paths) {
932 return $_;
933 }
934 }
935 return '';
936}
937# grafts set here are 'stronger' in that they're based on actual tree
939# matches, and won't be deleted from merge-base checking in write_grafts()
940sub graft_tree_joins {
941 my $grafts = shift;
942 map_tree_joins() if (@_branch_from && !%tree_map);
943 return unless %tree_map;
944 git_svn_each(sub {
946 my $i = shift;
947 my @args = (qw/rev-list --pretty=raw/, "refs/remotes/$i");
948 my ($fh, $ctx) = command_output_pipe(@args);
949 while (<$fh>) {
950 next unless /^commit ($sha1)$/o;
951 my $c = $1;
952 my ($t) = (<$fh> =~ /^tree ($sha1)$/o);
953 next unless $tree_map{$t};
954 my $l;
956 do {
957 $l = readline $fh;
958 } until ($l =~ /^committer (?:.+) (\d+) ([\-\+]?\d+)$/);
959 my ($s, $tz) = ($1, $2);
961 if ($tz =~ s/^\+//) {
962 $s += tz_to_s_offset($tz);
963 } elsif ($tz =~ s/^\-//) {
964 $s -= tz_to_s_offset($tz);
965 }
966 my ($url_a, $r_a, $uuid_a) = cmt_metadata($c);
968 foreach my $p (@{$tree_map{$t}}) {
970 next if $p eq $c;
971 my $mb = eval { command('merge-base', $c, $p) };
972 next unless ($@ || $?);
973 if (defined $r_a) {
974 # see if SVN says it's a relative
975 my ($url_b, $r_b, $uuid_b) =
976 cmt_metadata($p);
977 next if (defined $url_b &&
978 defined $url_a &&
979 ($url_a eq $url_b) &&
980 ($uuid_a eq $uuid_b));
981 if ($uuid_a eq $uuid_b) {
982 if ($r_b < $r_a) {
983 $grafts->{$c}->{$p} = 2;
984 next;
985 } elsif ($r_b > $r_a) {
986 $grafts->{$p}->{$c} = 2;
987 next;
988 }
989 }
990 }
991 my $ct = get_commit_time($p);
992 if ($ct < $s) {
993 $grafts->{$c}->{$p} = 2;
994 } elsif ($ct > $s) {
995 $grafts->{$p}->{$c} = 2;
996 }
997 # what should we do when $ct == $s ?
998 }
999 }
1000 command_close_pipe($fh, $ctx);
1001 });
1002}
1003sub graft_file_copy_lib {
1005 my ($grafts, $l_map, $u) = @_;
1006 my $tree_paths = $l_map->{$u};
1007 my $pfx = common_prefix([keys %$tree_paths]);
1008 my ($repo, $path) = repo_path_split($u.$pfx);
1009 $SVN = libsvn_connect($repo);
1010 my ($base, $head) = libsvn_parse_revision();
1012 my $inc = 1000;
1013 my ($min, $max) = ($base, $head < $base+$inc ? $head : $base+$inc);
1014 my $eh = $SVN::Error::handler;
1015 $SVN::Error::handler = \&libsvn_skip_unknown_revs;
1016 while (1) {
1017 my $pool = SVN::Pool->new;
1018 libsvn_get_log(libsvn_dup_ra($SVN), [$path],
1019 $min, $max, 0, 2, 1,
1020 sub {
1021 libsvn_graft_file_copies($grafts, $tree_paths,
1022 $path, @_);
1023 }, $pool);
1024 $pool->clear;
1025 last if ($max >= $head);
1026 $min = $max + 1;
1027 $max += $inc;
1028 $max = $head if ($max > $head);
1029 }
1030 $SVN::Error::handler = $eh;
1031}
1032sub process_merge_msg_matches {
1034 my ($grafts, $l_map, $u, $p, $c, @matches) = @_;
1035 my (@strong, @weak);
1036 foreach (@matches) {
1037 # merging with ourselves is not interesting
1038 next if $_ eq $p;
1039 if ($l_map->{$u}->{$_}) {
1040 push @strong, $_;
1041 } else {
1042 push @weak, $_;
1043 }
1044 }
1045 foreach my $w (@weak) {
1046 last if @strong;
1047 # no exact match, use branch name as regexp.
1048 my $re = qr/\Q$w\E/i;
1049 foreach (keys %{$l_map->{$u}}) {
1050 if (/$re/) {
1051 push @strong, $l_map->{$u}->{$_};
1052 last;
1053 }
1054 }
1055 last if @strong;
1056 $w = basename($w);
1057 $re = qr/\Q$w\E/i;
1058 foreach (keys %{$l_map->{$u}}) {
1059 if (/$re/) {
1060 push @strong, $l_map->{$u}->{$_};
1061 last;
1062 }
1063 }
1064 }
1065 my ($rev) = ($c->{m} =~ /^git-svn-id:\s(?:\S+?)\@(\d+)
1066 \s(?:[a-f\d\-]+)$/xsm);
1067 unless (defined $rev) {
1068 ($rev) = ($c->{m} =~/^git-svn-id:\s(\d+)
1069 \@(?:[a-f\d\-]+)/xsm);
1070 return unless defined $rev;
1071 }
1072 foreach my $m (@strong) {
1073 my ($r0, $s0) = find_rev_before($rev, $m, 1);
1074 $grafts->{$c->{c}}->{$s0} = 1 if defined $s0;
1075 }
1076}
1077sub graft_merge_msg {
1079 my ($grafts, $l_map, $u, $p, @re) = @_;
1080 my $x = $l_map->{$u}->{$p};
1082 my $rl = rev_list_raw($x);
1083 while (my $c = next_rev_list_entry($rl)) {
1084 foreach my $re (@re) {
1085 my (@br) = ($c->{m} =~ /$re/g);
1086 next unless @br;
1087 process_merge_msg_matches($grafts,$l_map,$u,$p,$c,@br);
1088 }
1089 }
1090}
1091sub read_uuid {
1093 return if $SVN_UUID;
1094 my $pool = SVN::Pool->new;
1095 $SVN_UUID = $SVN->get_uuid($pool);
1096 $pool->clear;
1097}
1098sub verify_ref {
1100 my ($ref) = @_;
1101 eval { command_oneline([ 'rev-parse', $ref ], { STDERR => 0 }) };
1102}
1103sub repo_path_split {
1105 my $full_url = shift;
1106 $full_url =~ s#/+$##;
1107 foreach (@repo_path_split_cache) {
1109 if ($full_url =~ s#$_##) {
1110 my $u = $1;
1111 $full_url =~ s#^/+##;
1112 return ($u, $full_url);
1113 }
1114 }
1115 my $tmp = libsvn_connect($full_url);
1116 return ($tmp->{repos_root}, $tmp->{svn_path});
1117}
1118sub setup_git_svn {
1120 defined $SVN_URL or croak "SVN repository location required\n";
1121 unless (-d $GIT_DIR) {
1122 croak "GIT_DIR=$GIT_DIR does not exist!\n";
1123 }
1124 mkpath([$GIT_SVN_DIR]);
1125 mkpath(["$GIT_SVN_DIR/info"]);
1126 open my $fh, '>>',$REVDB or croak $!;
1127 close $fh;
1128 s_to_file($SVN_URL,"$GIT_SVN_DIR/info/url");
1129}
1131sub get_tree_from_treeish {
1133 my ($treeish) = @_;
1134 croak "Not a sha1: $treeish\n" unless $treeish =~ /^$sha1$/o;
1135 my $type = command_oneline(qw/cat-file -t/, $treeish);
1136 my $expected;
1137 while ($type eq 'tag') {
1138 ($treeish, $type) = command(qw/cat-file tag/, $treeish);
1139 }
1140 if ($type eq 'commit') {
1141 $expected = (grep /^tree /, command(qw/cat-file commit/,
1142 $treeish))[0];
1143 ($expected) = ($expected =~ /^tree ($sha1)$/);
1144 die "Unable to get tree from $treeish\n" unless $expected;
1145 } elsif ($type eq 'tree') {
1146 $expected = $treeish;
1147 } else {
1148 die "$treeish is a $type, expected tree, tag or commit\n";
1149 }
1150 return $expected;
1151}
1152sub get_diff {
1154 my ($from, $treeish) = @_;
1155 print "diff-tree $from $treeish\n";
1156 my @diff_tree = qw(diff-tree -z -r);
1157 if ($_cp_similarity) {
1158 push @diff_tree, "-C$_cp_similarity";
1159 } else {
1160 push @diff_tree, '-C';
1161 }
1162 push @diff_tree, '--find-copies-harder' if $_find_copies_harder;
1163 push @diff_tree, "-l$_l" if defined $_l;
1164 push @diff_tree, $from, $treeish;
1165 my ($diff_fh, $ctx) = command_output_pipe(@diff_tree);
1166 local $/ = "\0";
1167 my $state = 'meta';
1168 my @mods;
1169 while (<$diff_fh>) {
1170 chomp $_; # this gets rid of the trailing "\0"
1171 if ($state eq 'meta' && /^:(\d{6})\s(\d{6})\s
1172 $sha1\s($sha1)\s([MTCRAD])\d*$/xo) {
1173 push @mods, { mode_a => $1, mode_b => $2,
1174 sha1_b => $3, chg => $4 };
1175 if ($4 =~ /^(?:C|R)$/) {
1176 $state = 'file_a';
1177 } else {
1178 $state = 'file_b';
1179 }
1180 } elsif ($state eq 'file_a') {
1181 my $x = $mods[$#mods] or croak "Empty array\n";
1182 if ($x->{chg} !~ /^(?:C|R)$/) {
1183 croak "Error parsing $_, $x->{chg}\n";
1184 }
1185 $x->{file_a} = $_;
1186 $state = 'file_b';
1187 } elsif ($state eq 'file_b') {
1188 my $x = $mods[$#mods] or croak "Empty array\n";
1189 if (exists $x->{file_a} && $x->{chg} !~ /^(?:C|R)$/) {
1190 croak "Error parsing $_, $x->{chg}\n";
1191 }
1192 if (!exists $x->{file_a} && $x->{chg} =~ /^(?:C|R)$/) {
1193 croak "Error parsing $_, $x->{chg}\n";
1194 }
1195 $x->{file_b} = $_;
1196 $state = 'meta';
1197 } else {
1198 croak "Error parsing $_\n";
1199 }
1200 }
1201 command_close_pipe($diff_fh, $ctx);
1202 return \@mods;
1203}
1204sub libsvn_checkout_tree {
1206 my ($from, $treeish, $ed) = @_;
1207 my $mods = get_diff($from, $treeish);
1208 return $mods unless (scalar @$mods);
1209 my %o = ( D => 1, R => 0, C => -1, A => 3, M => 3, T => 3 );
1210 foreach my $m (sort { $o{$a->{chg}} <=> $o{$b->{chg}} } @$mods) {
1211 my $f = $m->{chg};
1212 if (defined $o{$f}) {
1213 $ed->$f($m, $_q);
1214 } else {
1215 croak "Invalid change type: $f\n";
1216 }
1217 }
1218 $ed->rmdirs($_q) if $_rmdir;
1219 return $mods;
1220}
1221sub get_commit_message {
1223 my ($commit, $commit_msg) = (@_);
1224 my %log_msg = ( msg => '' );
1225 open my $msg, '>', $commit_msg or croak $!;
1226 my $type = command_oneline(qw/cat-file -t/, $commit);
1228 if ($type eq 'commit' || $type eq 'tag') {
1229 my ($msg_fh, $ctx) = command_output_pipe('cat-file',
1230 $type, $commit);
1231 my $in_msg = 0;
1232 while (<$msg_fh>) {
1233 if (!$in_msg) {
1234 $in_msg = 1 if (/^\s*$/);
1235 } elsif (/^git-svn-id: /) {
1236 # skip this, we regenerate the correct one
1237 # on re-fetch anyways
1238 } else {
1239 print $msg $_ or croak $!;
1240 }
1241 }
1242 command_close_pipe($msg_fh, $ctx);
1243 }
1244 close $msg or croak $!;
1245 if ($_edit || ($type eq 'tree')) {
1247 my $editor = $ENV{VISUAL} || $ENV{EDITOR} || 'vi';
1248 system($editor, $commit_msg);
1249 }
1250 # file_to_s removes all trailing newlines, so just use chomp() here:
1252 open $msg, '<', $commit_msg or croak $!;
1253 { local $/; chomp($log_msg{msg} = <$msg>); }
1254 close $msg or croak $!;
1255 return \%log_msg;
1257}
1258sub set_svn_commit_env {
1260 if (defined $LC_ALL) {
1261 $ENV{LC_ALL} = $LC_ALL;
1262 } else {
1263 delete $ENV{LC_ALL};
1264 }
1265}
1266sub rev_list_raw {
1268 my ($fh, $c) = command_output_pipe(qw/rev-list --pretty=raw/, @_);
1269 return { fh => $fh, ctx => $c, t => { } };
1270}
1271sub next_rev_list_entry {
1273 my $rl = shift;
1274 my $fh = $rl->{fh};
1275 my $x = $rl->{t};
1276 while (<$fh>) {
1277 if (/^commit ($sha1)$/o) {
1278 if ($x->{c}) {
1279 $rl->{t} = { c => $1 };
1280 return $x;
1281 } else {
1282 $x->{c} = $1;
1283 }
1284 } elsif (/^parent ($sha1)$/o) {
1285 $x->{p}->{$1} = 1;
1286 } elsif (s/^ //) {
1287 $x->{m} ||= '';
1288 $x->{m} .= $_;
1289 }
1290 }
1291 command_close_pipe($fh, $rl->{ctx});
1292 return ($x != $rl->{t}) ? $x : undef;
1293}
1294sub s_to_file {
1296 my ($str, $file, $mode) = @_;
1297 open my $fd,'>',$file or croak $!;
1298 print $fd $str,"\n" or croak $!;
1299 close $fd or croak $!;
1300 chmod ($mode &~ umask, $file) if (defined $mode);
1301}
1302sub file_to_s {
1304 my $file = shift;
1305 open my $fd,'<',$file or croak "$!: file: $file\n";
1306 local $/;
1307 my $ret = <$fd>;
1308 close $fd or croak $!;
1309 $ret =~ s/\s*$//s;
1310 return $ret;
1311}
1312sub assert_revision_unknown {
1314 my $r = shift;
1315 if (my $c = revdb_get($REVDB, $r)) {
1316 croak "$r = $c already exists! Why are we refetching it?";
1317 }
1318}
1319sub git_commit {
1321 my ($log_msg, @parents) = @_;
1322 assert_revision_unknown($log_msg->{revision});
1323 map_tree_joins() if (@_branch_from && !%tree_map);
1324 my (@tmp_parents, @exec_parents, %seen_parent);
1326 if (my $lparents = $log_msg->{parents}) {
1327 @tmp_parents = @$lparents
1328 }
1329 # commit parents can be conditionally bound to a particular
1330 # svn revision via: "svn_revno=commit_sha1", filter them out here:
1331 foreach my $p (@parents) {
1332 next unless defined $p;
1333 if ($p =~ /^(\d+)=($sha1_short)$/o) {
1334 if ($1 == $log_msg->{revision}) {
1335 push @tmp_parents, $2;
1336 }
1337 } else {
1338 push @tmp_parents, $p if $p =~ /$sha1_short/o;
1339 }
1340 }
1341 my $tree = $log_msg->{tree};
1342 if (!defined $tree) {
1343 my $index = set_index($GIT_SVN_INDEX);
1344 $tree = command_oneline('write-tree');
1345 croak $? if $?;
1346 restore_index($index);
1347 }
1348 # just in case we clobber the existing ref, we still want that ref
1349 # as our parent:
1350 if (my $cur = verify_ref("refs/remotes/$GIT_SVN^0")) {
1351 chomp $cur;
1352 push @tmp_parents, $cur;
1353 }
1354 if (exists $tree_map{$tree}) {
1356 foreach my $p (@{$tree_map{$tree}}) {
1357 my $skip;
1358 foreach (@tmp_parents) {
1359 # see if a common parent is found
1360 my $mb = eval { command('merge-base', $_, $p) };
1361 next if ($@ || $?);
1362 $skip = 1;
1363 last;
1364 }
1365 next if $skip;
1366 my ($url_p, $r_p, $uuid_p) = cmt_metadata($p);
1367 next if (($SVN_UUID eq $uuid_p) &&
1368 ($log_msg->{revision} > $r_p));
1369 next if (defined $url_p && defined $SVN_URL &&
1370 ($SVN_UUID eq $uuid_p) &&
1371 ($url_p eq $SVN_URL));
1372 push @tmp_parents, $p;
1373 }
1374 }
1375 foreach (@tmp_parents) {
1376 next if $seen_parent{$_};
1377 $seen_parent{$_} = 1;
1378 push @exec_parents, $_;
1379 # MAXPARENT is defined to 16 in commit-tree.c:
1380 last if @exec_parents > 16;
1381 }
1382 set_commit_env($log_msg);
1384 my @exec = ('git-commit-tree', $tree);
1385 push @exec, '-p', $_ foreach @exec_parents;
1386 defined(my $pid = open3(my $msg_fh, my $out_fh, '>&STDERR', @exec))
1387 or croak $!;
1388 print $msg_fh $log_msg->{msg} or croak $!;
1389 unless ($_no_metadata) {
1390 print $msg_fh "\ngit-svn-id: $SVN_URL\@$log_msg->{revision}",
1391 " $SVN_UUID\n" or croak $!;
1392 }
1393 $msg_fh->flush == 0 or croak $!;
1394 close $msg_fh or croak $!;
1395 chomp(my $commit = do { local $/; <$out_fh> });
1396 close $out_fh or croak $!;
1397 waitpid $pid, 0;
1398 croak $? if $?;
1399 if ($commit !~ /^$sha1$/o) {
1400 die "Failed to commit, invalid sha1: $commit\n";
1401 }
1402 command_noisy('update-ref',"refs/remotes/$GIT_SVN",$commit);
1403 revdb_set($REVDB, $log_msg->{revision}, $commit);
1404 # this output is read via pipe, do not change:
1406 print "r$log_msg->{revision} = $commit\n";
1407 check_repack();
1408 return $commit;
1409}
1410sub check_repack {
1412 if ($_repack && (--$_repack_nr == 0)) {
1413 $_repack_nr = $_repack;
1414 # repack doesn't use any arguments with spaces in them, does it?
1415 command_noisy('repack', split(/\s+/, $_repack_flags));
1416 }
1417}
1418sub set_commit_env {
1420 my ($log_msg) = @_;
1421 my $author = $log_msg->{author};
1422 if (!defined $author || length $author == 0) {
1423 $author = '(no author)';
1424 }
1425 my ($name,$email) = defined $users{$author} ? @{$users{$author}}
1426 : ($author,"$author\@$SVN_UUID");
1427 $ENV{GIT_AUTHOR_NAME} = $ENV{GIT_COMMITTER_NAME} = $name;
1428 $ENV{GIT_AUTHOR_EMAIL} = $ENV{GIT_COMMITTER_EMAIL} = $email;
1429 $ENV{GIT_AUTHOR_DATE} = $ENV{GIT_COMMITTER_DATE} = $log_msg->{date};
1430}
1431sub check_upgrade_needed {
1433 if (!-r $REVDB) {
1434 -d $GIT_SVN_DIR or mkpath([$GIT_SVN_DIR]);
1435 open my $fh, '>>',$REVDB or croak $!;
1436 close $fh;
1437 }
1438 return unless eval {
1439 command([qw/rev-parse --verify/,"$GIT_SVN-HEAD^0"],
1440 {STDERR => 0});
1441 };
1442 my $head = eval { command('rev-parse',"refs/remotes/$GIT_SVN") };
1443 if ($@ || !$head) {
1444 print STDERR "Please run: $0 rebuild --upgrade\n";
1445 exit 1;
1446 }
1447}
1448# fills %tree_map with a reverse mapping of trees to commits. Useful
1450# for finding parents to commit on.
1451sub map_tree_joins {
1452 my %seen;
1453 foreach my $br (@_branch_from) {
1454 my $pipe = command_output_pipe(qw/rev-list
1455 --topo-order --pretty=raw/, $br);
1456 while (<$pipe>) {
1457 if (/^commit ($sha1)$/o) {
1458 my $commit = $1;
1459 # if we've seen a commit,
1461 # we've seen its parents
1462 last if $seen{$commit};
1463 my ($tree) = (<$pipe> =~ /^tree ($sha1)$/o);
1464 unless (defined $tree) {
1465 die "Failed to parse commit $commit\n";
1466 }
1467 push @{$tree_map{$tree}}, $commit;
1468 $seen{$commit} = 1;
1469 }
1470 }
1471 eval { command_close_pipe($pipe) };
1472 }
1473}
1474sub load_all_refs {
1476 if (@_branch_from) {
1477 print STDERR '--branch|-b parameters are ignored when ',
1478 "--branch-all-refs|-B is passed\n";
1479 }
1480 # don't worry about rev-list on non-commit objects/tags,
1482 # it shouldn't blow up if a ref is a blob or tree...
1483 @_branch_from = command(qw/rev-parse --symbolic --all/);
1484}
1485# '<svn username> = real-name <email address>' mapping based on git-svnimport:
1487sub load_authors {
1488 open my $authors, '<', $_authors or die "Can't open $_authors $!\n";
1489 while (<$authors>) {
1490 chomp;
1491 next unless /^(\S+?|\(no author\))\s*=\s*(.+?)\s*<(.+)>\s*$/;
1492 my ($user, $name, $email) = ($1, $2, $3);
1493 $users{$user} = [$name, $email];
1494 }
1495 close $authors or croak $!;
1496}
1497sub rload_authors {
1499 open my $authors, '<', $_authors or die "Can't open $_authors $!\n";
1500 while (<$authors>) {
1501 chomp;
1502 next unless /^(\S+?)\s*=\s*(.+?)\s*<(.+)>\s*$/;
1503 my ($user, $name, $email) = ($1, $2, $3);
1504 $rusers{"$name <$email>"} = $user;
1505 }
1506 close $authors or croak $!;
1507}
1508sub git_svn_each {
1510 my $sub = shift;
1511 foreach (command(qw/rev-parse --symbolic --all/)) {
1512 next unless s#^refs/remotes/##;
1513 chomp $_;
1514 next unless -f "$GIT_DIR/svn/$_/info/url";
1515 &$sub($_);
1516 }
1517}
1518sub migrate_revdb {
1520 git_svn_each(sub {
1521 my $id = shift;
1522 defined(my $pid = fork) or croak $!;
1523 if (!$pid) {
1524 $GIT_SVN = $ENV{GIT_SVN_ID} = $id;
1525 init_vars();
1526 exit 0 if -r $REVDB;
1527 print "Upgrading svn => git mapping...\n";
1528 -d $GIT_SVN_DIR or mkpath([$GIT_SVN_DIR]);
1529 open my $fh, '>>',$REVDB or croak $!;
1530 close $fh;
1531 rebuild();
1532 print "Done upgrading. You may now delete the ",
1533 "deprecated $GIT_SVN_DIR/revs directory\n";
1534 exit 0;
1535 }
1536 waitpid $pid, 0;
1537 croak $? if $?;
1538 });
1539}
1540sub migration_check {
1542 migrate_revdb() unless (-e $REVDB);
1543 return if (-d "$GIT_DIR/svn" || !-d $GIT_DIR);
1544 print "Upgrading repository...\n";
1545 unless (-d "$GIT_DIR/svn") {
1546 mkdir "$GIT_DIR/svn" or croak $!;
1547 }
1548 print "Data from a previous version of git-svn exists, but\n\t",
1549 "$GIT_SVN_DIR\n\t(required for this version ",
1550 "($VERSION) of git-svn) does not.\n";
1551 foreach my $x (command(qw/rev-parse --symbolic --all/)) {
1553 next unless $x =~ s#^refs/remotes/##;
1554 chomp $x;
1555 next unless -f "$GIT_DIR/$x/info/url";
1556 my $u = eval { file_to_s("$GIT_DIR/$x/info/url") };
1557 next unless $u;
1558 my $dn = dirname("$GIT_DIR/svn/$x");
1559 mkpath([$dn]) unless -d $dn;
1560 rename "$GIT_DIR/$x", "$GIT_DIR/svn/$x" or croak "$!: $x";
1561 }
1562 migrate_revdb() if (-d $GIT_SVN_DIR && !-w $REVDB);
1563 print "Done upgrading.\n";
1564}
1565sub find_rev_before {
1567 my ($r, $id, $eq_ok) = @_;
1568 my $f = "$GIT_DIR/svn/$id/.rev_db";
1569 return (undef,undef) unless -r $f;
1570 --$r unless $eq_ok;
1571 while ($r > 0) {
1572 if (my $c = revdb_get($f, $r)) {
1573 return ($r, $c);
1574 }
1575 --$r;
1576 }
1577 return (undef, undef);
1578}
1579sub init_vars {
1581 $GIT_SVN ||= $ENV{GIT_SVN_ID} || 'git-svn';
1582 $GIT_SVN_DIR = "$GIT_DIR/svn/$GIT_SVN";
1583 $REVDB = "$GIT_SVN_DIR/.rev_db";
1584 $GIT_SVN_INDEX = "$GIT_SVN_DIR/index";
1585 $SVN_URL = undef;
1586 $SVN_WC = "$GIT_SVN_DIR/tree";
1587 %tree_map = ();
1588}
1589# convert GetOpt::Long specs for use by git-repo-config
1591sub read_repo_config {
1592 return unless -d $GIT_DIR;
1593 my $opts = shift;
1594 foreach my $o (keys %$opts) {
1595 my $v = $opts->{$o};
1596 my ($key) = ($o =~ /^([a-z\-]+)/);
1597 $key =~ s/-//g;
1598 my $arg = 'git-repo-config';
1599 $arg .= ' --int' if ($o =~ /[:=]i$/);
1600 $arg .= ' --bool' if ($o !~ /[:=][sfi]$/);
1601 if (ref $v eq 'ARRAY') {
1602 chomp(my @tmp = `$arg --get-all svn.$key`);
1603 @$v = @tmp if @tmp;
1604 } else {
1605 chomp(my $tmp = `$arg --get svn.$key`);
1606 if ($tmp && !($arg =~ / --bool / && $tmp eq 'false')) {
1607 $$v = $tmp;
1608 }
1609 }
1610 }
1611}
1612sub set_default_vals {
1614 if (defined $_repack) {
1615 $_repack = 1000 if ($_repack <= 0);
1616 $_repack_nr = $_repack;
1617 $_repack_flags ||= '-d';
1618 }
1619}
1620sub read_grafts {
1622 my $gr_file = shift;
1623 my ($grafts, $comments) = ({}, {});
1624 if (open my $fh, '<', $gr_file) {
1625 my @tmp;
1626 while (<$fh>) {
1627 if (/^($sha1)\s+/) {
1628 my $c = $1;
1629 if (@tmp) {
1630 @{$comments->{$c}} = @tmp;
1631 @tmp = ();
1632 }
1633 foreach my $p (split /\s+/, $_) {
1634 $grafts->{$c}->{$p} = 1;
1635 }
1636 } else {
1637 push @tmp, $_;
1638 }
1639 }
1640 close $fh or croak $!;
1641 @{$comments->{'END'}} = @tmp if @tmp;
1642 }
1643 return ($grafts, $comments);
1644}
1645sub write_grafts {
1647 my ($grafts, $comments, $gr_file) = @_;
1648 open my $fh, '>', $gr_file or croak $!;
1650 foreach my $c (sort keys %$grafts) {
1651 if ($comments->{$c}) {
1652 print $fh $_ foreach @{$comments->{$c}};
1653 }
1654 my $p = $grafts->{$c};
1655 my %x; # real parents
1656 delete $p->{$c}; # commits are not self-reproducing...
1657 my $ch = command_output_pipe(qw/cat-file commit/, $c);
1658 while (<$ch>) {
1659 if (/^parent ($sha1)/) {
1660 $x{$1} = $p->{$1} = 1;
1661 } else {
1662 last unless /^\S/;
1663 }
1664 }
1665 eval { command_close_pipe($ch) }; # breaking the pipe
1666 # if real parents are the only ones in the grafts, drop it
1668 next if join(' ',sort keys %$p) eq join(' ',sort keys %x);
1669 my (@ip, @jp, $mb);
1671 my %del = %x;
1672 @ip = @jp = keys %$p;
1673 foreach my $i (@ip) {
1674 next if $del{$i} || $p->{$i} == 2;
1675 foreach my $j (@jp) {
1676 next if $i eq $j || $del{$j} || $p->{$j} == 2;
1677 $mb = eval { command('merge-base', $i, $j) };
1678 next unless $mb;
1679 chomp $mb;
1680 next if $x{$mb};
1681 if ($mb eq $j) {
1682 delete $p->{$i};
1683 $del{$i} = 1;
1684 } elsif ($mb eq $i) {
1685 delete $p->{$j};
1686 $del{$j} = 1;
1687 }
1688 }
1689 }
1690 # if real parents are the only ones in the grafts, drop it
1692 next if join(' ',sort keys %$p) eq join(' ',sort keys %x);
1693 print $fh $c, ' ', join(' ', sort keys %$p),"\n";
1695 }
1696 if ($comments->{'END'}) {
1697 print $fh $_ foreach @{$comments->{'END'}};
1698 }
1699 close $fh or croak $!;
1700}
1701sub read_url_paths_all {
1703 my ($l_map, $pfx, $p) = @_;
1704 my @dir;
1705 foreach (<$p/*>) {
1706 if (-r "$_/info/url") {
1707 $pfx .= '/' if $pfx && $pfx !~ m!/$!;
1708 my $id = $pfx . basename $_;
1709 my $url = file_to_s("$_/info/url");
1710 my ($u, $p) = repo_path_split($url);
1711 $l_map->{$u}->{$p} = $id;
1712 } elsif (-d $_) {
1713 push @dir, $_;
1714 }
1715 }
1716 foreach (@dir) {
1717 my $x = $_;
1718 $x =~ s!^\Q$GIT_DIR\E/svn/!!o;
1719 read_url_paths_all($l_map, $x, $_);
1720 }
1721}
1722# this one only gets ids that have been imported, not new ones
1724sub read_url_paths {
1725 my $l_map = {};
1726 git_svn_each(sub { my $x = shift;
1727 my $url = file_to_s("$GIT_DIR/svn/$x/info/url");
1728 my ($u, $p) = repo_path_split($url);
1729 $l_map->{$u}->{$p} = $x;
1730 });
1731 return $l_map;
1732}
1733sub extract_metadata {
1735 my $id = shift or return (undef, undef, undef);
1736 my ($url, $rev, $uuid) = ($id =~ /^git-svn-id:\s(\S+?)\@(\d+)
1737 \s([a-f\d\-]+)$/x);
1738 if (!defined $rev || !$uuid || !$url) {
1739 # some of the original repositories I made had
1740 # identifiers like this:
1741 ($rev, $uuid) = ($id =~/^git-svn-id:\s(\d+)\@([a-f\d\-]+)/);
1742 }
1743 return ($url, $rev, $uuid);
1744}
1745sub cmt_metadata {
1747 return extract_metadata((grep(/^git-svn-id: /,
1748 command(qw/cat-file commit/, shift)))[-1]);
1749}
1750sub get_commit_time {
1752 my $cmt = shift;
1753 my $fh = command_output_pipe(qw/rev-list --pretty=raw -n1/, $cmt);
1754 while (<$fh>) {
1755 /^committer\s(?:.+) (\d+) ([\-\+]?\d+)$/ or next;
1756 my ($s, $tz) = ($1, $2);
1757 if ($tz =~ s/^\+//) {
1758 $s += tz_to_s_offset($tz);
1759 } elsif ($tz =~ s/^\-//) {
1760 $s -= tz_to_s_offset($tz);
1761 }
1762 eval { command_close_pipe($fh) };
1763 return $s;
1764 }
1765 die "Can't get commit time for commit: $cmt\n";
1766}
1767sub tz_to_s_offset {
1769 my ($tz) = @_;
1770 $tz =~ s/(\d\d)$//;
1771 return ($1 * 60) + ($tz * 3600);
1772}
1773# adapted from pager.c
1775sub config_pager {
1776 $_pager ||= $ENV{GIT_PAGER} || $ENV{PAGER};
1777 if (!defined $_pager) {
1778 $_pager = 'less';
1779 } elsif (length $_pager == 0 || $_pager eq 'cat') {
1780 $_pager = undef;
1781 }
1782}
1783sub run_pager {
1785 return unless -t *STDOUT;
1786 pipe my $rfd, my $wfd or return;
1787 defined(my $pid = fork) or croak $!;
1788 if (!$pid) {
1789 open STDOUT, '>&', $wfd or croak $!;
1790 return;
1791 }
1792 open STDIN, '<&', $rfd or croak $!;
1793 $ENV{LESS} ||= 'FRSX';
1794 exec $_pager or croak "Can't run pager: $! ($_pager)\n";
1795}
1796sub get_author_info {
1798 my ($dest, $author, $t, $tz) = @_;
1799 $author =~ s/(?:^\s*|\s*$)//g;
1800 $dest->{a_raw} = $author;
1801 my $_a;
1802 if ($_authors) {
1803 $_a = $rusers{$author} || undef;
1804 }
1805 if (!$_a) {
1806 ($_a) = ($author =~ /<([^>]+)\@[^>]+>$/);
1807 }
1808 $dest->{t} = $t;
1809 $dest->{tz} = $tz;
1810 $dest->{a} = $_a;
1811 # Date::Parse isn't in the standard Perl distro :(
1812 if ($tz =~ s/^\+//) {
1813 $t += tz_to_s_offset($tz);
1814 } elsif ($tz =~ s/^\-//) {
1815 $t -= tz_to_s_offset($tz);
1816 }
1817 $dest->{t_utc} = $t;
1818}
1819sub process_commit {
1821 my ($c, $r_min, $r_max, $defer) = @_;
1822 if (defined $r_min && defined $r_max) {
1823 if ($r_min == $c->{r} && $r_min == $r_max) {
1824 show_commit($c);
1825 return 0;
1826 }
1827 return 1 if $r_min == $r_max;
1828 if ($r_min < $r_max) {
1829 # we need to reverse the print order
1830 return 0 if (defined $_limit && --$_limit < 0);
1831 push @$defer, $c;
1832 return 1;
1833 }
1834 if ($r_min != $r_max) {
1835 return 1 if ($r_min < $c->{r});
1836 return 1 if ($r_max > $c->{r});
1837 }
1838 }
1839 return 0 if (defined $_limit && --$_limit < 0);
1840 show_commit($c);
1841 return 1;
1842}
1843sub show_commit {
1845 my $c = shift;
1846 if ($_oneline) {
1847 my $x = "\n";
1848 if (my $l = $c->{l}) {
1849 while ($l->[0] =~ /^\s*$/) { shift @$l }
1850 $x = $l->[0];
1851 }
1852 $_l_fmt ||= 'A' . length($c->{r});
1853 print 'r',pack($_l_fmt, $c->{r}),' | ';
1854 print "$c->{c} | " if $_show_commit;
1855 print $x;
1856 } else {
1857 show_commit_normal($c);
1858 }
1859}
1860sub show_commit_changed_paths {
1862 my ($c) = @_;
1863 return unless $c->{changed};
1864 print "Changed paths:\n", @{$c->{changed}};
1865}
1866sub show_commit_normal {
1868 my ($c) = @_;
1869 print '-' x72, "\nr$c->{r} | ";
1870 print "$c->{c} | " if $_show_commit;
1871 print "$c->{a} | ", strftime("%Y-%m-%d %H:%M:%S %z (%a, %d %b %Y)",
1872 localtime($c->{t_utc})), ' | ';
1873 my $nr_line = 0;
1874 if (my $l = $c->{l}) {
1876 while ($l->[$#$l] eq "\n" && $#$l > 0
1877 && $l->[($#$l - 1)] eq "\n") {
1878 pop @$l;
1879 }
1880 $nr_line = scalar @$l;
1881 if (!$nr_line) {
1882 print "1 line\n\n\n";
1883 } else {
1884 if ($nr_line == 1) {
1885 $nr_line = '1 line';
1886 } else {
1887 $nr_line .= ' lines';
1888 }
1889 print $nr_line, "\n";
1890 show_commit_changed_paths($c);
1891 print "\n";
1892 print $_ foreach @$l;
1893 }
1894 } else {
1895 print "1 line\n";
1896 show_commit_changed_paths($c);
1897 print "\n";
1898 }
1900 foreach my $x (qw/raw diff/) {
1901 if ($c->{$x}) {
1902 print "\n";
1903 print $_ foreach @{$c->{$x}}
1904 }
1905 }
1906}
1907sub _simple_prompt {
1909 my ($cred, $realm, $default_username, $may_save, $pool) = @_;
1910 $may_save = undef if $_no_auth_cache;
1911 $default_username = $_username if defined $_username;
1912 if (defined $default_username && length $default_username) {
1913 if (defined $realm && length $realm) {
1914 print "Authentication realm: $realm\n";
1915 }
1916 $cred->username($default_username);
1917 } else {
1918 _username_prompt($cred, $realm, $may_save, $pool);
1919 }
1920 $cred->password(_read_password("Password for '" .
1921 $cred->username . "': ", $realm));
1922 $cred->may_save($may_save);
1923 $SVN::_Core::SVN_NO_ERROR;
1924}
1925sub _ssl_server_trust_prompt {
1927 my ($cred, $realm, $failures, $cert_info, $may_save, $pool) = @_;
1928 $may_save = undef if $_no_auth_cache;
1929 print "Error validating server certificate for '$realm':\n";
1930 if ($failures & $SVN::Auth::SSL::UNKNOWNCA) {
1931 print " - The certificate is not issued by a trusted ",
1932 "authority. Use the\n",
1933 " fingerprint to validate the certificate manually!\n";
1934 }
1935 if ($failures & $SVN::Auth::SSL::CNMISMATCH) {
1936 print " - The certificate hostname does not match.\n";
1937 }
1938 if ($failures & $SVN::Auth::SSL::NOTYETVALID) {
1939 print " - The certificate is not yet valid.\n";
1940 }
1941 if ($failures & $SVN::Auth::SSL::EXPIRED) {
1942 print " - The certificate has expired.\n";
1943 }
1944 if ($failures & $SVN::Auth::SSL::OTHER) {
1945 print " - The certificate has an unknown error.\n";
1946 }
1947 printf( "Certificate information:\n".
1948 " - Hostname: %s\n".
1949 " - Valid: from %s until %s\n".
1950 " - Issuer: %s\n".
1951 " - Fingerprint: %s\n",
1952 map $cert_info->$_, qw(hostname valid_from valid_until
1953 issuer_dname fingerprint) );
1954 my $choice;
1955prompt:
1956 print $may_save ?
1957 "(R)eject, accept (t)emporarily or accept (p)ermanently? " :
1958 "(R)eject or accept (t)emporarily? ";
1959 $choice = lc(substr(<STDIN> || 'R', 0, 1));
1960 if ($choice =~ /^t$/i) {
1961 $cred->may_save(undef);
1962 } elsif ($choice =~ /^r$/i) {
1963 return -1;
1964 } elsif ($may_save && $choice =~ /^p$/i) {
1965 $cred->may_save($may_save);
1966 } else {
1967 goto prompt;
1968 }
1969 $cred->accepted_failures($failures);
1970 $SVN::_Core::SVN_NO_ERROR;
1971}
1972sub _ssl_client_cert_prompt {
1974 my ($cred, $realm, $may_save, $pool) = @_;
1975 $may_save = undef if $_no_auth_cache;
1976 print "Client certificate filename: ";
1977 chomp(my $filename = <STDIN>);
1978 $cred->cert_file($filename);
1979 $cred->may_save($may_save);
1980 $SVN::_Core::SVN_NO_ERROR;
1981}
1982sub _ssl_client_cert_pw_prompt {
1984 my ($cred, $realm, $may_save, $pool) = @_;
1985 $may_save = undef if $_no_auth_cache;
1986 $cred->password(_read_password("Password: ", $realm));
1987 $cred->may_save($may_save);
1988 $SVN::_Core::SVN_NO_ERROR;
1989}
1990sub _username_prompt {
1992 my ($cred, $realm, $may_save, $pool) = @_;
1993 $may_save = undef if $_no_auth_cache;
1994 if (defined $realm && length $realm) {
1995 print "Authentication realm: $realm\n";
1996 }
1997 my $username;
1998 if (defined $_username) {
1999 $username = $_username;
2000 } else {
2001 print "Username: ";
2002 chomp($username = <STDIN>);
2003 }
2004 $cred->username($username);
2005 $cred->may_save($may_save);
2006 $SVN::_Core::SVN_NO_ERROR;
2007}
2008sub _read_password {
2010 my ($prompt, $realm) = @_;
2011 print $prompt;
2012 require Term::ReadKey;
2013 Term::ReadKey::ReadMode('noecho');
2014 my $password = '';
2015 while (defined(my $key = Term::ReadKey::ReadKey(0))) {
2016 last if $key =~ /[\012\015]/; # \n\r
2017 $password .= $key;
2018 }
2019 Term::ReadKey::ReadMode('restore');
2020 print "\n";
2021 $password;
2022}
2023sub libsvn_connect {
2025 my ($url) = @_;
2026 SVN::_Core::svn_config_ensure($_config_dir, undef);
2027 my ($baton, $callbacks) = SVN::Core::auth_open_helper([
2028 SVN::Client::get_simple_provider(),
2029 SVN::Client::get_ssl_server_trust_file_provider(),
2030 SVN::Client::get_simple_prompt_provider(
2031 \&_simple_prompt, 2),
2032 SVN::Client::get_ssl_client_cert_prompt_provider(
2033 \&_ssl_client_cert_prompt, 2),
2034 SVN::Client::get_ssl_client_cert_pw_prompt_provider(
2035 \&_ssl_client_cert_pw_prompt, 2),
2036 SVN::Client::get_username_provider(),
2037 SVN::Client::get_ssl_server_trust_prompt_provider(
2038 \&_ssl_server_trust_prompt),
2039 SVN::Client::get_username_prompt_provider(
2040 \&_username_prompt, 2),
2041 ]);
2042 my $config = SVN::Core::config_get_config($_config_dir);
2043 my $ra = SVN::Ra->new(url => $url, auth => $baton,
2044 config => $config,
2045 pool => SVN::Pool->new,
2046 auth_provider_callbacks => $callbacks);
2047 my $df = $ENV{GIT_SVN_DELTA_FETCH};
2049 if (defined $df) {
2050 $_xfer_delta = $df;
2051 } else {
2052 $_xfer_delta = ($url =~ m#^file://#) ? undef : 1;
2053 }
2054 $ra->{svn_path} = $url;
2055 $ra->{repos_root} = $ra->get_repos_root;
2056 $ra->{svn_path} =~ s#^\Q$ra->{repos_root}\E/*##;
2057 push @repo_path_split_cache, qr/^(\Q$ra->{repos_root}\E)/;
2058 return $ra;
2059}
2060sub libsvn_can_do_switch {
2062 unless (defined $_svn_can_do_switch) {
2063 my $pool = SVN::Pool->new;
2064 my $rep = eval {
2065 $SVN->do_switch(1, '', 0, $SVN->{url},
2066 SVN::Delta::Editor->new, $pool);
2067 };
2068 if ($@) {
2069 $_svn_can_do_switch = 0;
2070 } else {
2071 $rep->abort_report($pool);
2072 $_svn_can_do_switch = 1;
2073 }
2074 $pool->clear;
2075 }
2076 $_svn_can_do_switch;
2077}
2078sub libsvn_dup_ra {
2080 my ($ra) = @_;
2081 SVN::Ra->new(map { $_ => $ra->{$_} } qw/config url
2082 auth auth_provider_callbacks repos_root svn_path/);
2083}
2084sub libsvn_get_file {
2086 my ($gui, $f, $rev, $chg, $untracked) = @_;
2087 $f =~ s#^/##;
2088 print "\t$chg\t$f\n" unless $_q;
2089 my ($hash, $pid, $in, $out);
2091 my $pool = SVN::Pool->new;
2092 defined($pid = open3($in, $out, '>&STDERR',
2093 qw/git-hash-object -w --stdin/)) or croak $!;
2094 # redirect STDOUT for SVN 1.1.x compatibility
2095 open my $stdout, '>&', \*STDOUT or croak $!;
2096 open STDOUT, '>&', $in or croak $!;
2097 my ($r, $props) = $SVN->get_file($f, $rev, \*STDOUT, $pool);
2098 $in->flush == 0 or croak $!;
2099 open STDOUT, '>&', $stdout or croak $!;
2100 close $in or croak $!;
2101 close $stdout or croak $!;
2102 $pool->clear;
2103 chomp($hash = do { local $/; <$out> });
2104 close $out or croak $!;
2105 waitpid $pid, 0;
2106 $hash =~ /^$sha1$/o or die "not a sha1: $hash\n";
2107 my $mode = exists $props->{'svn:executable'} ? '100755' : '100644';
2109 if (exists $props->{'svn:special'}) {
2110 $mode = '120000';
2111 my $link = `git-cat-file blob $hash`; # no chomping symlinks
2112 $link =~ s/^link // or die "svn:special file with contents: <",
2113 $link, "> is not understood\n";
2114 defined($pid = open3($in, $out, '>&STDERR',
2115 qw/git-hash-object -w --stdin/)) or croak $!;
2116 print $in $link;
2117 $in->flush == 0 or croak $!;
2118 close $in or croak $!;
2119 chomp($hash = do { local $/; <$out> });
2120 close $out or croak $!;
2121 waitpid $pid, 0;
2122 $hash =~ /^$sha1$/o or die "not a sha1: $hash\n";
2123 }
2124 %{$untracked->{file_prop}->{$f}} = %$props;
2125 print $gui $mode,' ',$hash,"\t",$f,"\0" or croak $!;
2126}
2127sub uri_encode {
2129 my ($f) = @_;
2130 $f =~ s#([^a-zA-Z0-9\*!\:_\./\-])#uc sprintf("%%%02x",ord($1))#eg;
2131 $f
2132}
2133sub uri_decode {
2135 my ($f) = @_;
2136 $f =~ tr/+/ /;
2137 $f =~ s/%([A-F0-9]{2})/chr hex($1)/ge;
2138 $f
2139}
2140sub libsvn_log_entry {
2142 my ($rev, $author, $date, $msg, $parents, $untracked) = @_;
2143 my ($Y,$m,$d,$H,$M,$S) = ($date =~ /^(\d{4})\-(\d\d)\-(\d\d)T
2144 (\d\d)\:(\d\d)\:(\d\d).\d+Z$/x)
2145 or die "Unable to parse date: $date\n";
2146 if (defined $author && length $author > 0 &&
2147 defined $_authors && ! defined $users{$author}) {
2148 die "Author: $author not defined in $_authors file\n";
2149 }
2150 $msg = '' if ($rev == 0 && !defined $msg);
2151 open my $un, '>>', "$GIT_SVN_DIR/unhandled.log" or croak $!;
2153 my $h;
2154 print $un "r$rev\n" or croak $!;
2155 $h = $untracked->{empty};
2156 foreach (sort keys %$h) {
2157 my $act = $h->{$_} ? '+empty_dir' : '-empty_dir';
2158 print $un " $act: ", uri_encode($_), "\n" or croak $!;
2159 warn "W: $act: $_\n";
2160 }
2161 foreach my $t (qw/dir_prop file_prop/) {
2162 $h = $untracked->{$t} or next;
2163 foreach my $path (sort keys %$h) {
2164 my $ppath = $path eq '' ? '.' : $path;
2165 foreach my $prop (sort keys %{$h->{$path}}) {
2166 next if $SKIP{$prop};
2167 my $v = $h->{$path}->{$prop};
2168 if (defined $v) {
2169 print $un " +$t: ",
2170 uri_encode($ppath), ' ',
2171 uri_encode($prop), ' ',
2172 uri_encode($v), "\n"
2173 or croak $!;
2174 } else {
2175 print $un " -$t: ",
2176 uri_encode($ppath), ' ',
2177 uri_encode($prop), "\n"
2178 or croak $!;
2179 }
2180 }
2181 }
2182 }
2183 foreach my $t (qw/absent_file absent_directory/) {
2184 $h = $untracked->{$t} or next;
2185 foreach my $parent (sort keys %$h) {
2186 foreach my $path (sort @{$h->{$parent}}) {
2187 print $un " $t: ",
2188 uri_encode("$parent/$path"), "\n"
2189 or croak $!;
2190 warn "W: $t: $parent/$path ",
2191 "Insufficient permissions?\n";
2192 }
2193 }
2194 }
2195 # revprops (make this optional? it's an extra network trip...)
2197 my $pool = SVN::Pool->new;
2198 my $rp = $SVN->rev_proplist($rev, $pool);
2199 foreach (sort keys %$rp) {
2200 next if /^svn:(?:author|date|log)$/;
2201 print $un " rev_prop: ", uri_encode($_), ' ',
2202 uri_encode($rp->{$_}), "\n";
2203 }
2204 $pool->clear;
2205 close $un or croak $!;
2206 { revision => $rev, date => "+0000 $Y-$m-$d $H:$M:$S",
2208 author => $author, msg => $msg."\n", parents => $parents || [],
2209 revprops => $rp }
2210}
2211sub process_rm {
2213 my ($gui, $last_commit, $f, $q) = @_;
2214 # remove entire directories.
2215 if (command('ls-tree',$last_commit,'--',$f) =~ /^040000 tree/) {
2216 my ($ls, $ctx) = command_output_pipe(qw/ls-tree
2217 -r --name-only -z/,
2218 $last_commit,'--',$f);
2219 local $/ = "\0";
2220 while (<$ls>) {
2221 print $gui '0 ',0 x 40,"\t",$_ or croak $!;
2222 print "\tD\t$_\n" unless $q;
2223 }
2224 print "\tD\t$f/\n" unless $q;
2225 command_close_pipe($ls, $ctx);
2226 return $SVN::Node::dir;
2227 } else {
2228 print $gui '0 ',0 x 40,"\t",$f,"\0" or croak $!;
2229 print "\tD\t$f\n" unless $q;
2230 return $SVN::Node::file;
2231 }
2232}
2233sub libsvn_fetch {
2235 $_xfer_delta ? libsvn_fetch_delta(@_) : libsvn_fetch_full(@_);
2236}
2237sub libsvn_fetch_delta {
2239 my ($last_commit, $paths, $rev, $author, $date, $msg) = @_;
2240 my $pool = SVN::Pool->new;
2241 my $ed = SVN::Git::Fetcher->new({ c => $last_commit, q => $_q });
2242 my $reporter = $SVN->do_update($rev, '', 1, $ed, $pool);
2243 my @lock = $SVN::Core::VERSION ge '1.2.0' ? (undef) : ();
2244 my (undef, $last_rev, undef) = cmt_metadata($last_commit);
2245 $reporter->set_path('', $last_rev, 0, @lock, $pool);
2246 $reporter->finish_report($pool);
2247 $pool->clear;
2248 unless ($ed->{git_commit_ok}) {
2249 die "SVN connection failed somewhere...\n";
2250 }
2251 libsvn_log_entry($rev, $author, $date, $msg, [$last_commit], $ed);
2252}
2253sub libsvn_fetch_full {
2255 my ($last_commit, $paths, $rev, $author, $date, $msg) = @_;
2256 my ($gui, $ctx) = command_input_pipe(qw/update-index -z --index-info/);
2257 my %amr;
2258 my $ut = { empty => {}, dir_prop => {}, file_prop => {} };
2259 my $p = $SVN->{svn_path};
2260 foreach my $f (keys %$paths) {
2261 my $m = $paths->{$f}->action();
2262 if (length $p) {
2263 $f =~ s#^/\Q$p\E/##;
2264 next if $f =~ m#^/#;
2265 } else {
2266 $f =~ s#^/##;
2267 }
2268 if ($m =~ /^[DR]$/) {
2269 my $t = process_rm($gui, $last_commit, $f, $_q);
2270 if ($m eq 'D') {
2271 $ut->{empty}->{$f} = 0 if $t == $SVN::Node::dir;
2272 next;
2273 }
2274 # 'R' can be file replacements, too, right?
2275 }
2276 my $pool = SVN::Pool->new;
2277 my $t = $SVN->check_path($f, $rev, $pool);
2278 if ($t == $SVN::Node::file) {
2279 if ($m =~ /^[AMR]$/) {
2280 $amr{$f} = $m;
2281 } else {
2282 die "Unrecognized action: $m, ($f r$rev)\n";
2283 }
2284 } elsif ($t == $SVN::Node::dir && $m =~ /^[AR]$/) {
2285 my @traversed = ();
2286 libsvn_traverse($gui, '', $f, $rev, \@traversed, $ut);
2287 if (@traversed) {
2288 foreach (@traversed) {
2289 $amr{$_} = $m;
2290 }
2291 } else {
2292 my ($dir, $file) = ($f =~ m#^(.*?)/?([^/]+)$#);
2293 delete $ut->{empty}->{$dir};
2294 $ut->{empty}->{$f} = 1;
2295 }
2296 }
2297 $pool->clear;
2298 }
2299 foreach (keys %amr) {
2300 libsvn_get_file($gui, $_, $rev, $amr{$_}, $ut);
2301 my ($d) = ($_ =~ m#^(.*?)/?(?:[^/]+)$#);
2302 delete $ut->{empty}->{$d};
2303 }
2304 unless (exists $ut->{dir_prop}->{''}) {
2305 my $pool = SVN::Pool->new;
2306 my (undef, undef, $props) = $SVN->get_dir('', $rev, $pool);
2307 %{$ut->{dir_prop}->{''}} = %$props;
2308 $pool->clear;
2309 }
2310 command_close_pipe($gui, $ctx);
2311 libsvn_log_entry($rev, $author, $date, $msg, [$last_commit], $ut);
2312}
2313sub svn_grab_base_rev {
2315 my $c = eval { command_oneline([qw/rev-parse --verify/,
2316 "refs/remotes/$GIT_SVN^0"],
2317 { STDERR => 0 }) };
2318 if (defined $c && length $c) {
2319 my ($url, $rev, $uuid) = cmt_metadata($c);
2320 return ($rev, $c) if defined $rev;
2321 }
2322 if ($_no_metadata) {
2323 my $offset = -41; # from tail
2324 my $rl;
2325 open my $fh, '<', $REVDB or
2326 die "--no-metadata specified and $REVDB not readable\n";
2327 seek $fh, $offset, 2;
2328 $rl = readline $fh;
2329 defined $rl or return (undef, undef);
2330 chomp $rl;
2331 while ($c ne $rl && tell $fh != 0) {
2332 $offset -= 41;
2333 seek $fh, $offset, 2;
2334 $rl = readline $fh;
2335 defined $rl or return (undef, undef);
2336 chomp $rl;
2337 }
2338 my $rev = tell $fh;
2339 croak $! if ($rev < -1);
2340 $rev = ($rev - 41) / 41;
2341 close $fh or croak $!;
2342 return ($rev, $c);
2343 }
2344 return (undef, undef);
2345}
2346sub libsvn_parse_revision {
2348 my $base = shift;
2349 my $head = $SVN->get_latest_revnum();
2350 if (!defined $_revision || $_revision eq 'BASE:HEAD') {
2351 return ($base + 1, $head) if (defined $base);
2352 return (0, $head);
2353 }
2354 return ($1, $2) if ($_revision =~ /^(\d+):(\d+)$/);
2355 return ($_revision, $_revision) if ($_revision =~ /^\d+$/);
2356 if ($_revision =~ /^BASE:(\d+)$/) {
2357 return ($base + 1, $1) if (defined $base);
2358 return (0, $head);
2359 }
2360 return ($1, $head) if ($_revision =~ /^(\d+):HEAD$/);
2361 die "revision argument: $_revision not understood by git-svn\n",
2362 "Try using the command-line svn client instead\n";
2363}
2364sub libsvn_traverse {
2366 my ($gui, $pfx, $path, $rev, $files, $untracked) = @_;
2367 my $cwd = length $pfx ? "$pfx/$path" : $path;
2368 my $pool = SVN::Pool->new;
2369 $cwd =~ s#^\Q$SVN->{svn_path}\E##;
2370 my $nr = 0;
2371 my ($dirent, $r, $props) = $SVN->get_dir($cwd, $rev, $pool);
2372 %{$untracked->{dir_prop}->{$cwd}} = %$props;
2373 foreach my $d (keys %$dirent) {
2374 my $t = $dirent->{$d}->kind;
2375 if ($t == $SVN::Node::dir) {
2376 my $i = libsvn_traverse($gui, $cwd, $d, $rev,
2377 $files, $untracked);
2378 if ($i) {
2379 $nr += $i;
2380 } else {
2381 $untracked->{empty}->{"$cwd/$d"} = 1;
2382 }
2383 } elsif ($t == $SVN::Node::file) {
2384 $nr++;
2385 my $file = "$cwd/$d";
2386 if (defined $files) {
2387 push @$files, $file;
2388 } else {
2389 libsvn_get_file($gui, $file, $rev, 'A',
2390 $untracked);
2391 my ($dir) = ($file =~ m#^(.*?)/?(?:[^/]+)$#);
2392 delete $untracked->{empty}->{$dir};
2393 }
2394 }
2395 }
2396 $pool->clear;
2397 $nr;
2398}
2399sub libsvn_traverse_ignore {
2401 my ($fh, $path, $r) = @_;
2402 $path =~ s#^/+##g;
2403 my $pool = SVN::Pool->new;
2404 my ($dirent, undef, $props) = $SVN->get_dir($path, $r, $pool);
2405 my $p = $path;
2406 $p =~ s#^\Q$SVN->{svn_path}\E/##;
2407 print $fh length $p ? "\n# $p\n" : "\n# /\n";
2408 if (my $s = $props->{'svn:ignore'}) {
2409 $s =~ s/[\r\n]+/\n/g;
2410 chomp $s;
2411 if (length $p == 0) {
2412 $s =~ s#\n#\n/$p#g;
2413 print $fh "/$s\n";
2414 } else {
2415 $s =~ s#\n#\n/$p/#g;
2416 print $fh "/$p/$s\n";
2417 }
2418 }
2419 foreach (sort keys %$dirent) {
2420 next if $dirent->{$_}->kind != $SVN::Node::dir;
2421 libsvn_traverse_ignore($fh, "$path/$_", $r);
2422 }
2423 $pool->clear;
2424}
2425sub revisions_eq {
2427 my ($path, $r0, $r1) = @_;
2428 return 1 if $r0 == $r1;
2429 my $nr = 0;
2430 # should be OK to use Pool here (r1 - r0) should be small
2431 my $pool = SVN::Pool->new;
2432 libsvn_get_log($SVN, [$path], $r0, $r1,
2433 0, 0, 1, sub {$nr++}, $pool);
2434 $pool->clear;
2435 return 0 if ($nr > 1);
2436 return 1;
2437}
2438sub libsvn_find_parent_branch {
2440 my ($paths, $rev, $author, $date, $msg) = @_;
2441 my $svn_path = '/'.$SVN->{svn_path};
2442 # look for a parent from another branch:
2444 my $i = $paths->{$svn_path} or return;
2445 my $branch_from = $i->copyfrom_path or return;
2446 my $r = $i->copyfrom_rev;
2447 print STDERR "Found possible branch point: ",
2448 "$branch_from => $svn_path, $r\n";
2449 $branch_from =~ s#^/##;
2450 my $l_map = {};
2451 read_url_paths_all($l_map, '', "$GIT_DIR/svn");
2452 my $url = $SVN->{repos_root};
2453 defined $l_map->{$url} or return;
2454 my $id = $l_map->{$url}->{$branch_from};
2455 if (!defined $id && $_follow_parent) {
2456 print STDERR "Following parent: $branch_from\@$r\n";
2457 # auto create a new branch and follow it
2458 $id = basename($branch_from);
2459 $id .= '@'.$r if -r "$GIT_DIR/svn/$id";
2460 while (-r "$GIT_DIR/svn/$id") {
2461 # just grow a tail if we're not unique enough :x
2462 $id .= '-';
2463 }
2464 }
2465 return unless defined $id;
2466 my ($r0, $parent) = find_rev_before($r,$id,1);
2468 if ($_follow_parent && (!defined $r0 || !defined $parent)) {
2469 defined(my $pid = fork) or croak $!;
2470 if (!$pid) {
2471 $GIT_SVN = $ENV{GIT_SVN_ID} = $id;
2472 init_vars();
2473 $SVN_URL = "$url/$branch_from";
2474 $SVN = undef;
2475 setup_git_svn();
2476 # we can't assume SVN_URL exists at r+1:
2477 $_revision = "0:$r";
2478 fetch_lib();
2479 exit 0;
2480 }
2481 waitpid $pid, 0;
2482 croak $? if $?;
2483 ($r0, $parent) = find_rev_before($r,$id,1);
2484 }
2485 return unless (defined $r0 && defined $parent);
2486 if (revisions_eq($branch_from, $r0, $r)) {
2487 unlink $GIT_SVN_INDEX;
2488 print STDERR "Found branch parent: ($GIT_SVN) $parent\n";
2489 command_noisy('read-tree', $parent);
2490 unless (libsvn_can_do_switch()) {
2491 return libsvn_fetch_full($parent, $paths, $rev,
2492 $author, $date, $msg);
2493 }
2494 # do_switch works with svn/trunk >= r22312, but that is not
2495 # included with SVN 1.4.2 (the latest version at the moment),
2496 # so we can't rely on it.
2497 my $ra = libsvn_connect("$url/$branch_from");
2498 my $ed = SVN::Git::Fetcher->new({c => $parent, q => $_q });
2499 my $pool = SVN::Pool->new;
2500 my $reporter = $ra->do_switch($rev, '', 1, $SVN->{url},
2501 $ed, $pool);
2502 my @lock = $SVN::Core::VERSION ge '1.2.0' ? (undef) : ();
2503 $reporter->set_path('', $r0, 0, @lock, $pool);
2504 $reporter->finish_report($pool);
2505 $pool->clear;
2506 unless ($ed->{git_commit_ok}) {
2507 die "SVN connection failed somewhere...\n";
2508 }
2509 return libsvn_log_entry($rev, $author, $date, $msg, [$parent]);
2510 }
2511 print STDERR "Nope, branch point not imported or unknown\n";
2512 return undef;
2513}
2514sub libsvn_get_log {
2516 my ($ra, @args) = @_;
2517 $args[4]-- if $args[4] && $_xfer_delta && ! $_follow_parent;
2518 if ($SVN::Core::VERSION le '1.2.0') {
2519 splice(@args, 3, 1);
2520 }
2521 $ra->get_log(@args);
2522}
2523sub libsvn_new_tree {
2525 if (my $log_entry = libsvn_find_parent_branch(@_)) {
2526 return $log_entry;
2527 }
2528 my ($paths, $rev, $author, $date, $msg) = @_;
2529 my $ut;
2530 if ($_xfer_delta) {
2531 my $pool = SVN::Pool->new;
2532 my $ed = SVN::Git::Fetcher->new({q => $_q});
2533 my $reporter = $SVN->do_update($rev, '', 1, $ed, $pool);
2534 my @lock = $SVN::Core::VERSION ge '1.2.0' ? (undef) : ();
2535 $reporter->set_path('', $rev, 1, @lock, $pool);
2536 $reporter->finish_report($pool);
2537 $pool->clear;
2538 unless ($ed->{git_commit_ok}) {
2539 die "SVN connection failed somewhere...\n";
2540 }
2541 $ut = $ed;
2542 } else {
2543 $ut = { empty => {}, dir_prop => {}, file_prop => {} };
2544 my ($gui, $ctx) = command_input_pipe(qw/update-index
2545 -z --index-info/);
2546 libsvn_traverse($gui, '', $SVN->{svn_path}, $rev, undef, $ut);
2547 command_close_pipe($gui, $ctx);
2548 }
2549 libsvn_log_entry($rev, $author, $date, $msg, [], $ut);
2550}
2551sub find_graft_path_commit {
2553 my ($tree_paths, $p1, $r1) = @_;
2554 foreach my $x (keys %$tree_paths) {
2555 next unless ($p1 =~ /^\Q$x\E/);
2556 my $i = $tree_paths->{$x};
2557 my ($r0, $parent) = find_rev_before($r1,$i,1);
2558 return $parent if (defined $r0 && $r0 == $r1);
2559 print STDERR "r$r1 of $i not imported\n";
2560 next;
2561 }
2562 return undef;
2563}
2564sub find_graft_path_parents {
2566 my ($grafts, $tree_paths, $c, $p0, $r0) = @_;
2567 foreach my $x (keys %$tree_paths) {
2568 next unless ($p0 =~ /^\Q$x\E/);
2569 my $i = $tree_paths->{$x};
2570 my ($r, $parent) = find_rev_before($r0, $i, 1);
2571 if (defined $r && defined $parent && revisions_eq($x,$r,$r0)) {
2572 my ($url_b, undef, $uuid_b) = cmt_metadata($c);
2573 my ($url_a, undef, $uuid_a) = cmt_metadata($parent);
2574 next if ($url_a && $url_b && $url_a eq $url_b &&
2575 $uuid_b eq $uuid_a);
2576 $grafts->{$c}->{$parent} = 1;
2577 }
2578 }
2579}
2580sub libsvn_graft_file_copies {
2582 my ($grafts, $tree_paths, $path, $paths, $rev) = @_;
2583 foreach (keys %$paths) {
2584 my $i = $paths->{$_};
2585 my ($m, $p0, $r0) = ($i->action, $i->copyfrom_path,
2586 $i->copyfrom_rev);
2587 next unless (defined $p0 && defined $r0);
2588 my $p1 = $_;
2590 $p1 =~ s#^/##;
2591 $p0 =~ s#^/##;
2592 my $c = find_graft_path_commit($tree_paths, $p1, $rev);
2593 next unless $c;
2594 find_graft_path_parents($grafts, $tree_paths, $c, $p0, $r0);
2595 }
2596}
2597sub set_index {
2599 my $old = $ENV{GIT_INDEX_FILE};
2600 $ENV{GIT_INDEX_FILE} = shift;
2601 return $old;
2602}
2603sub restore_index {
2605 my ($old) = @_;
2606 if (defined $old) {
2607 $ENV{GIT_INDEX_FILE} = $old;
2608 } else {
2609 delete $ENV{GIT_INDEX_FILE};
2610 }
2611}
2612sub libsvn_commit_cb {
2614 my ($rev, $date, $committer, $c, $msg, $r_last, $cmt_last) = @_;
2615 if ($_optimize_commits && $rev == ($r_last + 1)) {
2616 my $log = libsvn_log_entry($rev,$committer,$date,$msg);
2617 $log->{tree} = get_tree_from_treeish($c);
2618 my $cmt = git_commit($log, $cmt_last, $c);
2619 my @diff = command('diff-tree', $cmt, $c);
2620 if (@diff) {
2621 print STDERR "Trees differ: $cmt $c\n",
2622 join('',@diff),"\n";
2623 exit 1;
2624 }
2625 } else {
2626 fetch("$rev=$c");
2627 }
2628}
2629sub libsvn_ls_fullurl {
2631 my $fullurl = shift;
2632 my $ra = libsvn_connect($fullurl);
2633 my @ret;
2634 my $pool = SVN::Pool->new;
2635 my $r = defined $_revision ? $_revision : $ra->get_latest_revnum;
2636 my ($dirent, undef, undef) = $ra->get_dir('', $r, $pool);
2637 foreach my $d (keys %$dirent) {
2638 if ($dirent->{$d}->kind == $SVN::Node::dir) {
2639 push @ret, "$d/"; # add '/' for compat with cli svn
2640 }
2641 }
2642 $pool->clear;
2643 return @ret;
2644}
2645sub libsvn_skip_unknown_revs {
2648 my $err = shift;
2649 my $errno = $err->apr_err();
2650 # Maybe the branch we're tracking didn't
2651 # exist when the repo started, so it's
2652 # not an error if it doesn't, just continue
2653 #
2654 # Wonderfully consistent library, eh?
2655 # 160013 - svn:// and file://
2656 # 175002 - http(s)://
2657 # 175007 - http(s):// (this repo required authorization, too...)
2658 # More codes may be discovered later...
2659 if ($errno == 175007 || $errno == 175002 || $errno == 160013) {
2660 return;
2661 }
2662 croak "Error from SVN, ($errno): ", $err->expanded_message,"\n";
2663};
2664# Tie::File seems to be prone to offset errors if revisions get sparse,
2666# it's not that fast, either. Tie::File is also not in Perl 5.6. So
2667# one of my favorite modules is out :< Next up would be one of the DBM
2668# modules, but I'm not sure which is most portable... So I'll just
2669# go with something that's plain-text, but still capable of
2670# being randomly accessed. So here's my ultra-simple fixed-width
2671# database. All records are 40 characters + "\n", so it's easy to seek
2672# to a revision: (41 * rev) is the byte offset.
2673# A record of 40 0s denotes an empty revision.
2674# And yes, it's still pretty fast (faster than Tie::File).
2675sub revdb_set {
2676 my ($file, $rev, $commit) = @_;
2677 length $commit == 40 or croak "arg3 must be a full SHA1 hexsum\n";
2678 open my $fh, '+<', $file or croak $!;
2679 my $offset = $rev * 41;
2680 # assume that append is the common case:
2681 seek $fh, 0, 2 or croak $!;
2682 my $pos = tell $fh;
2683 if ($pos < $offset) {
2684 print $fh (('0' x 40),"\n") x (($offset - $pos) / 41);
2685 }
2686 seek $fh, $offset, 0 or croak $!;
2687 print $fh $commit,"\n";
2688 close $fh or croak $!;
2689}
2690sub revdb_get {
2692 my ($file, $rev) = @_;
2693 my $ret;
2694 my $offset = $rev * 41;
2695 open my $fh, '<', $file or croak $!;
2696 seek $fh, $offset, 0;
2697 if (tell $fh == $offset) {
2698 $ret = readline $fh;
2699 if (defined $ret) {
2700 chomp $ret;
2701 $ret = undef if ($ret =~ /^0{40}$/);
2702 }
2703 }
2704 close $fh or croak $!;
2705 return $ret;
2706}
2707sub copy_remote_ref {
2709 my $origin = $_cp_remote ? $_cp_remote : 'origin';
2710 my $ref = "refs/remotes/$GIT_SVN";
2711 if (command('ls-remote', $origin, $ref)) {
2712 command_noisy('fetch', $origin, "$ref:$ref");
2713 } elsif ($_cp_remote && !$_upgrade) {
2714 die "Unable to find remote reference: ",
2715 "refs/remotes/$GIT_SVN on $origin\n";
2716 }
2717}
2718{
2720 my $kill_stupid_warnings = $SVN::Node::none.$SVN::Node::file.
2721 $SVN::Node::dir.$SVN::Node::unknown.
2722 $SVN::Node::none.$SVN::Node::file.
2723 $SVN::Node::dir.$SVN::Node::unknown.
2724 $SVN::Auth::SSL::CNMISMATCH.
2725 $SVN::Auth::SSL::NOTYETVALID.
2726 $SVN::Auth::SSL::EXPIRED.
2727 $SVN::Auth::SSL::UNKNOWNCA.
2728 $SVN::Auth::SSL::OTHER;
2729}
2730package SVN::Git::Fetcher;
2732use vars qw/@ISA/;
2733use strict;
2734use warnings;
2735use Carp qw/croak/;
2736use IO::File qw//;
2737use Git qw/command command_oneline command_noisy
2738 command_output_pipe command_input_pipe command_close_pipe/;
2739# file baton members: path, mode_a, mode_b, pool, fh, blob, base
2741sub new {
2742 my ($class, $git_svn) = @_;
2743 my $self = SVN::Delta::Editor->new;
2744 bless $self, $class;
2745 $self->{c} = $git_svn->{c} if exists $git_svn->{c};
2746 $self->{q} = $git_svn->{q};
2747 $self->{empty} = {};
2748 $self->{dir_prop} = {};
2749 $self->{file_prop} = {};
2750 $self->{absent_dir} = {};
2751 $self->{absent_file} = {};
2752 ($self->{gui}, $self->{ctx}) = command_input_pipe(
2753 qw/update-index -z --index-info/);
2754 require Digest::MD5;
2755 $self;
2756}
2757sub open_root {
2759 { path => '' };
2760}
2761sub open_directory {
2763 my ($self, $path, $pb, $rev) = @_;
2764 { path => $path };
2765}
2766sub delete_entry {
2768 my ($self, $path, $rev, $pb) = @_;
2769 my $t = process_rm($self->{gui}, $self->{c}, $path, $self->{q});
2770 $self->{empty}->{$path} = 0 if $t == $SVN::Node::dir;
2771 undef;
2772}
2773sub open_file {
2775 my ($self, $path, $pb, $rev) = @_;
2776 my ($mode, $blob) = (command('ls-tree', $self->{c}, '--',$path)
2777 =~ /^(\d{6}) blob ([a-f\d]{40})\t/);
2778 unless (defined $mode && defined $blob) {
2779 die "$path was not found in commit $self->{c} (r$rev)\n";
2780 }
2781 { path => $path, mode_a => $mode, mode_b => $mode, blob => $blob,
2782 pool => SVN::Pool->new, action => 'M' };
2783}
2784sub add_file {
2786 my ($self, $path, $pb, $cp_path, $cp_rev) = @_;
2787 my ($dir, $file) = ($path =~ m#^(.*?)/?([^/]+)$#);
2788 delete $self->{empty}->{$dir};
2789 { path => $path, mode_a => 100644, mode_b => 100644,
2790 pool => SVN::Pool->new, action => 'A' };
2791}
2792sub add_directory {
2794 my ($self, $path, $cp_path, $cp_rev) = @_;
2795 my ($dir, $file) = ($path =~ m#^(.*?)/?([^/]+)$#);
2796 delete $self->{empty}->{$dir};
2797 $self->{empty}->{$path} = 1;
2798 { path => $path };
2799}
2800sub change_dir_prop {
2802 my ($self, $db, $prop, $value) = @_;
2803 $self->{dir_prop}->{$db->{path}} ||= {};
2804 $self->{dir_prop}->{$db->{path}}->{$prop} = $value;
2805 undef;
2806}
2807sub absent_directory {
2809 my ($self, $path, $pb) = @_;
2810 $self->{absent_dir}->{$pb->{path}} ||= [];
2811 push @{$self->{absent_dir}->{$pb->{path}}}, $path;
2812 undef;
2813}
2814sub absent_file {
2816 my ($self, $path, $pb) = @_;
2817 $self->{absent_file}->{$pb->{path}} ||= [];
2818 push @{$self->{absent_file}->{$pb->{path}}}, $path;
2819 undef;
2820}
2821sub change_file_prop {
2823 my ($self, $fb, $prop, $value) = @_;
2824 if ($prop eq 'svn:executable') {
2825 if ($fb->{mode_b} != 120000) {
2826 $fb->{mode_b} = defined $value ? 100755 : 100644;
2827 }
2828 } elsif ($prop eq 'svn:special') {
2829 $fb->{mode_b} = defined $value ? 120000 : 100644;
2830 } else {
2831 $self->{file_prop}->{$fb->{path}} ||= {};
2832 $self->{file_prop}->{$fb->{path}}->{$prop} = $value;
2833 }
2834 undef;
2835}
2836sub apply_textdelta {
2838 my ($self, $fb, $exp) = @_;
2839 my $fh = IO::File->new_tmpfile;
2840 $fh->autoflush(1);
2841 # $fh gets auto-closed() by SVN::TxDelta::apply(),
2842 # (but $base does not,) so dup() it for reading in close_file
2843 open my $dup, '<&', $fh or croak $!;
2844 my $base = IO::File->new_tmpfile;
2845 $base->autoflush(1);
2846 if ($fb->{blob}) {
2847 defined (my $pid = fork) or croak $!;
2848 if (!$pid) {
2849 open STDOUT, '>&', $base or croak $!;
2850 print STDOUT 'link ' if ($fb->{mode_a} == 120000);
2851 exec qw/git-cat-file blob/, $fb->{blob} or croak $!;
2852 }
2853 waitpid $pid, 0;
2854 croak $? if $?;
2855 if (defined $exp) {
2857 seek $base, 0, 0 or croak $!;
2858 my $md5 = Digest::MD5->new;
2859 $md5->addfile($base);
2860 my $got = $md5->hexdigest;
2861 die "Checksum mismatch: $fb->{path} $fb->{blob}\n",
2862 "expected: $exp\n",
2863 " got: $got\n" if ($got ne $exp);
2864 }
2865 }
2866 seek $base, 0, 0 or croak $!;
2867 $fb->{fh} = $dup;
2868 $fb->{base} = $base;
2869 [ SVN::TxDelta::apply($base, $fh, undef, $fb->{path}, $fb->{pool}) ];
2870}
2871sub close_file {
2873 my ($self, $fb, $exp) = @_;
2874 my $hash;
2875 my $path = $fb->{path};
2876 if (my $fh = $fb->{fh}) {
2877 seek($fh, 0, 0) or croak $!;
2878 my $md5 = Digest::MD5->new;
2879 $md5->addfile($fh);
2880 my $got = $md5->hexdigest;
2881 die "Checksum mismatch: $path\n",
2882 "expected: $exp\n got: $got\n" if ($got ne $exp);
2883 seek($fh, 0, 0) or croak $!;
2884 if ($fb->{mode_b} == 120000) {
2885 read($fh, my $buf, 5) == 5 or croak $!;
2886 $buf eq 'link ' or die "$path has mode 120000",
2887 "but is not a link\n";
2888 }
2889 defined(my $pid = open my $out,'-|') or die "Can't fork: $!\n";
2890 if (!$pid) {
2891 open STDIN, '<&', $fh or croak $!;
2892 exec qw/git-hash-object -w --stdin/ or croak $!;
2893 }
2894 chomp($hash = do { local $/; <$out> });
2895 close $out or croak $!;
2896 close $fh or croak $!;
2897 $hash =~ /^[a-f\d]{40}$/ or die "not a sha1: $hash\n";
2898 close $fb->{base} or croak $!;
2899 } else {
2900 $hash = $fb->{blob} or die "no blob information\n";
2901 }
2902 $fb->{pool}->clear;
2903 my $gui = $self->{gui};
2904 print $gui "$fb->{mode_b} $hash\t$path\0" or croak $!;
2905 print "\t$fb->{action}\t$path\n" if $fb->{action} && ! $self->{q};
2906 undef;
2907}
2908sub abort_edit {
2910 my $self = shift;
2911 eval { command_close_pipe($self->{gui}, $self->{ctx}) };
2912 $self->SUPER::abort_edit(@_);
2913}
2914sub close_edit {
2916 my $self = shift;
2917 command_close_pipe($self->{gui}, $self->{ctx});
2918 $self->{git_commit_ok} = 1;
2919 $self->SUPER::close_edit(@_);
2920}
2921package SVN::Git::Editor;
2923use vars qw/@ISA/;
2924use strict;
2925use warnings;
2926use Carp qw/croak/;
2927use IO::File;
2928use Git qw/command command_oneline command_noisy
2929 command_output_pipe command_input_pipe command_close_pipe/;
2930sub new {
2932 my $class = shift;
2933 my $git_svn = shift;
2934 my $self = SVN::Delta::Editor->new(@_);
2935 bless $self, $class;
2936 foreach (qw/svn_path c r ra /) {
2937 die "$_ required!\n" unless (defined $git_svn->{$_});
2938 $self->{$_} = $git_svn->{$_};
2939 }
2940 $self->{pool} = SVN::Pool->new;
2941 $self->{bat} = { '' => $self->open_root($self->{r}, $self->{pool}) };
2942 $self->{rm} = { };
2943 require Digest::MD5;
2944 return $self;
2945}
2946sub split_path {
2948 return ($_[0] =~ m#^(.*?)/?([^/]+)$#);
2949}
2950sub repo_path {
2952 (defined $_[1] && length $_[1]) ? $_[1] : ''
2953}
2954sub url_path {
2956 my ($self, $path) = @_;
2957 $self->{ra}->{url} . '/' . $self->repo_path($path);
2958}
2959sub rmdirs {
2961 my ($self, $q) = @_;
2962 my $rm = $self->{rm};
2963 delete $rm->{''}; # we never delete the url we're tracking
2964 return unless %$rm;
2965 foreach (keys %$rm) {
2967 my @d = split m#/#, $_;
2968 my $c = shift @d;
2969 $rm->{$c} = 1;
2970 while (@d) {
2971 $c .= '/' . shift @d;
2972 $rm->{$c} = 1;
2973 }
2974 }
2975 delete $rm->{$self->{svn_path}};
2976 delete $rm->{''}; # we never delete the url we're tracking
2977 return unless %$rm;
2978 my ($fh, $ctx) = command_output_pipe(
2980 qw/ls-tree --name-only -r -z/, $self->{c});
2981 local $/ = "\0";
2982 while (<$fh>) {
2983 chomp;
2984 my @dn = split m#/#, $_;
2985 while (pop @dn) {
2986 delete $rm->{join '/', @dn};
2987 }
2988 unless (%$rm) {
2989 eval { command_close_pipe($fh) };
2990 return;
2991 }
2992 }
2993 command_close_pipe($fh, $ctx);
2994 my ($r, $p, $bat) = ($self->{r}, $self->{pool}, $self->{bat});
2996 foreach my $d (sort { $b =~ tr#/#/# <=> $a =~ tr#/#/# } keys %$rm) {
2997 $self->close_directory($bat->{$d}, $p);
2998 my ($dn) = ($d =~ m#^(.*?)/?(?:[^/]+)$#);
2999 print "\tD+\t/$d/\n" unless $q;
3000 $self->SUPER::delete_entry($d, $r, $bat->{$dn}, $p);
3001 delete $bat->{$d};
3002 }
3003}
3004sub open_or_add_dir {
3006 my ($self, $full_path, $baton) = @_;
3007 my $p = SVN::Pool->new;
3008 my $t = $self->{ra}->check_path($full_path, $self->{r}, $p);
3009 $p->clear;
3010 if ($t == $SVN::Node::none) {
3011 return $self->add_directory($full_path, $baton,
3012 undef, -1, $self->{pool});
3013 } elsif ($t == $SVN::Node::dir) {
3014 return $self->open_directory($full_path, $baton,
3015 $self->{r}, $self->{pool});
3016 }
3017 print STDERR "$full_path already exists in repository at ",
3018 "r$self->{r} and it is not a directory (",
3019 ($t == $SVN::Node::file ? 'file' : 'unknown'),"/$t)\n";
3020 exit 1;
3021}
3022sub ensure_path {
3024 my ($self, $path) = @_;
3025 my $bat = $self->{bat};
3026 $path = $self->repo_path($path);
3027 return $bat->{''} unless (length $path);
3028 my @p = split m#/+#, $path;
3029 my $c = shift @p;
3030 $bat->{$c} ||= $self->open_or_add_dir($c, $bat->{''});
3031 while (@p) {
3032 my $c0 = $c;
3033 $c .= '/' . shift @p;
3034 $bat->{$c} ||= $self->open_or_add_dir($c, $bat->{$c0});
3035 }
3036 return $bat->{$c};
3037}
3038sub A {
3040 my ($self, $m, $q) = @_;
3041 my ($dir, $file) = split_path($m->{file_b});
3042 my $pbat = $self->ensure_path($dir);
3043 my $fbat = $self->add_file($self->repo_path($m->{file_b}), $pbat,
3044 undef, -1);
3045 print "\tA\t$m->{file_b}\n" unless $q;
3046 $self->chg_file($fbat, $m);
3047 $self->close_file($fbat,undef,$self->{pool});
3048}
3049sub C {
3051 my ($self, $m, $q) = @_;
3052 my ($dir, $file) = split_path($m->{file_b});
3053 my $pbat = $self->ensure_path($dir);
3054 my $fbat = $self->add_file($self->repo_path($m->{file_b}), $pbat,
3055 $self->url_path($m->{file_a}), $self->{r});
3056 print "\tC\t$m->{file_a} => $m->{file_b}\n" unless $q;
3057 $self->chg_file($fbat, $m);
3058 $self->close_file($fbat,undef,$self->{pool});
3059}
3060sub delete_entry {
3062 my ($self, $path, $pbat) = @_;
3063 my $rpath = $self->repo_path($path);
3064 my ($dir, $file) = split_path($rpath);
3065 $self->{rm}->{$dir} = 1;
3066 $self->SUPER::delete_entry($rpath, $self->{r}, $pbat, $self->{pool});
3067}
3068sub R {
3070 my ($self, $m, $q) = @_;
3071 my ($dir, $file) = split_path($m->{file_b});
3072 my $pbat = $self->ensure_path($dir);
3073 my $fbat = $self->add_file($self->repo_path($m->{file_b}), $pbat,
3074 $self->url_path($m->{file_a}), $self->{r});
3075 print "\tR\t$m->{file_a} => $m->{file_b}\n" unless $q;
3076 $self->chg_file($fbat, $m);
3077 $self->close_file($fbat,undef,$self->{pool});
3078 ($dir, $file) = split_path($m->{file_a});
3080 $pbat = $self->ensure_path($dir);
3081 $self->delete_entry($m->{file_a}, $pbat);
3082}
3083sub M {
3085 my ($self, $m, $q) = @_;
3086 my ($dir, $file) = split_path($m->{file_b});
3087 my $pbat = $self->ensure_path($dir);
3088 my $fbat = $self->open_file($self->repo_path($m->{file_b}),
3089 $pbat,$self->{r},$self->{pool});
3090 print "\t$m->{chg}\t$m->{file_b}\n" unless $q;
3091 $self->chg_file($fbat, $m);
3092 $self->close_file($fbat,undef,$self->{pool});
3093}
3094sub T { shift->M(@_) }
3096sub change_file_prop {
3098 my ($self, $fbat, $pname, $pval) = @_;
3099 $self->SUPER::change_file_prop($fbat, $pname, $pval, $self->{pool});
3100}
3101sub chg_file {
3103 my ($self, $fbat, $m) = @_;
3104 if ($m->{mode_b} =~ /755$/ && $m->{mode_a} !~ /755$/) {
3105 $self->change_file_prop($fbat,'svn:executable','*');
3106 } elsif ($m->{mode_b} !~ /755$/ && $m->{mode_a} =~ /755$/) {
3107 $self->change_file_prop($fbat,'svn:executable',undef);
3108 }
3109 my $fh = IO::File->new_tmpfile or croak $!;
3110 if ($m->{mode_b} =~ /^120/) {
3111 print $fh 'link ' or croak $!;
3112 $self->change_file_prop($fbat,'svn:special','*');
3113 } elsif ($m->{mode_a} =~ /^120/ && $m->{mode_b} !~ /^120/) {
3114 $self->change_file_prop($fbat,'svn:special',undef);
3115 }
3116 defined(my $pid = fork) or croak $!;
3117 if (!$pid) {
3118 open STDOUT, '>&', $fh or croak $!;
3119 exec qw/git-cat-file blob/, $m->{sha1_b} or croak $!;
3120 }
3121 waitpid $pid, 0;
3122 croak $? if $?;
3123 $fh->flush == 0 or croak $!;
3124 seek $fh, 0, 0 or croak $!;
3125 my $md5 = Digest::MD5->new;
3127 $md5->addfile($fh) or croak $!;
3128 seek $fh, 0, 0 or croak $!;
3129 my $exp = $md5->hexdigest;
3131 my $pool = SVN::Pool->new;
3132 my $atd = $self->apply_textdelta($fbat, undef, $pool);
3133 my $got = SVN::TxDelta::send_stream($fh, @$atd, $pool);
3134 die "Checksum mismatch\nexpected: $exp\ngot: $got\n" if ($got ne $exp);
3135 $pool->clear;
3136 close $fh or croak $!;
3138}
3139sub D {
3141 my ($self, $m, $q) = @_;
3142 my ($dir, $file) = split_path($m->{file_b});
3143 my $pbat = $self->ensure_path($dir);
3144 print "\tD\t$m->{file_b}\n" unless $q;
3145 $self->delete_entry($m->{file_b}, $pbat);
3146}
3147sub close_edit {
3149 my ($self) = @_;
3150 my ($p,$bat) = ($self->{pool}, $self->{bat});
3151 foreach (sort { $b =~ tr#/#/# <=> $a =~ tr#/#/# } keys %$bat) {
3152 $self->close_directory($bat->{$_}, $p);
3153 }
3154 $self->SUPER::close_edit($p);
3155 $p->clear;
3156}
3157sub abort_edit {
3159 my ($self) = @_;
3160 $self->SUPER::abort_edit($self->{pool});
3161 $self->{pool}->clear;
3162}
3163__END__
3165Data structures:
3167$log_msg hashref as returned by libsvn_log_entry()
3169{
3170 msg => 'whitespace-formatted log entry
3171', # trailing newline is preserved
3172 revision => '8', # integer
3173 date => '2004-02-24T17:01:44.108345Z', # commit date
3174 author => 'committer name'
3175};
3176@mods = array of diff-index line hashes, each element represents one line
3178 of diff-index output
3179diff-index line ($m hash)
3181{
3182 mode_a => first column of diff-index output, no leading ':',
3183 mode_b => second column of diff-index output,
3184 sha1_b => sha1sum of the final blob,
3185 chg => change type [MCRADT],
3186 file_a => original file name of a file (iff chg is 'C' or 'R')
3187 file_b => new/current file name of a file (any chg)
3188}
3189;
3190# retval of read_url_paths{,_all}();
3192$l_map = {
3193 # repository root url
3194 'https://svn.musicpd.org' => {
3195 # repository path # GIT_SVN_ID
3196 'mpd/trunk' => 'trunk',
3197 'mpd/tags/0.11.5' => 'tags/0.11.5',
3198 },
3199}
3200Notes:
3202 I don't trust the each() function on unless I created %hash myself
3203 because the internal iterator may not have started at base.