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raw | patch | inline | side by side (parent: d7ad3be)
| author | Eric Wong <normalperson@yhbt.net> | |
| Mon, 15 Jan 2007 07:21:16 +0000 (23:21 -0800) | ||
| committer | Eric Wong <normalperson@yhbt.net> | |
| Fri, 23 Feb 2007 08:57:09 +0000 (00:57 -0800) |
Signed-off-by: Eric Wong <normalperson@yhbt.net>
| git-svn.perl | patch | blob | history |
diff --git a/git-svn.perl b/git-svn.perl
index bf53b2d69b62048bc22a0b1e731cf60383555d9f..261e33d02302d68c0d10fc3d3ad5e59d13975e01 100755 (executable)
--- a/git-svn.perl
+++ b/git-svn.perl
$ENV{LC_ALL} = 'C';
$| = 1; # unbuffer STDOUT
-# properties that we do not log:
-my %SKIP = ( 'svn:wc:ra_dav:version-url' => 1,
- 'svn:special' => 1,
- 'svn:executable' => 1,
- 'svn:entry:committed-rev' => 1,
- 'svn:entry:last-author' => 1,
- 'svn:entry:uuid' => 1,
- 'svn:entry:committed-date' => 1,
-);
-
sub fatal (@) { print STDERR @_; exit 1 }
require SVN::Core; # use()-ing this causes segfaults for me... *shrug*
require SVN::Ra;
'strategy|s=s' => \$_strategy,
'dry-run|n' => \$_dry_run,
%cmt_opts, %fc_opts } ],
- 'set-tree' => [ \&commit, "Set an SVN repository to a git tree-ish",
- { 'stdin|' => \$_stdin, %cmt_opts, %fc_opts, } ],
+ 'set-tree' => [ \&cmd_set_tree,
+ "Set an SVN repository to a git tree-ish",
+ { 'stdin|' => \$_stdin, %cmt_opts, %fc_opts, } ],
'show-ignore' => [ \&cmd_show_ignore, "Show svn:ignore listings",
{ 'revision|r=i' => \$_revision } ],
rebuild => [ \&cmd_rebuild, "Rebuild git-svn metadata (after git clone)",
}
}
-sub fetch {
- check_upgrade_needed();
- $SVN_URL ||= file_to_s("$GIT_SVN_DIR/info/url");
- my $ret = fetch_lib(@_);
- if ($ret->{commit} && !verify_ref('refs/heads/master^0')) {
- command_noisy(qw(update-ref refs/heads/master),$ret->{commit});
- }
- return $ret;
-}
-
-sub fetch_lib {
- my (@parents) = @_;
- $SVN_URL ||= file_to_s("$GIT_SVN_DIR/info/url");
- $SVN ||= Git::SVN::Ra->new($SVN_URL);
- my ($last_rev, $last_commit) = svn_grab_base_rev();
- my ($base, $head) = libsvn_parse_revision($last_rev);
- if ($base > $head) {
- return { revision => $last_rev, commit => $last_commit }
- }
- my $index = set_index($GIT_SVN_INDEX);
-
- # limit ourselves and also fork() since get_log won't release memory
- # after processing a revision and SVN stuff seems to leak
- my $inc = 1000;
- my ($min, $max) = ($base, $head < $base+$inc ? $head : $base+$inc);
- if (defined $last_commit) {
- unless (-e $GIT_SVN_INDEX) {
- command_noisy('read-tree', $last_commit);
- }
- my $x = command_oneline('write-tree');
- my ($y) = (command(qw/cat-file commit/, $last_commit)
- =~ /^tree ($sha1)/m);
- if ($y ne $x) {
- unlink $GIT_SVN_INDEX or croak $!;
- command_noisy('read-tree', $last_commit);
- }
- $x = command_oneline('write-tree');
- if ($y ne $x) {
- print STDERR "trees ($last_commit) $y != $x\n",
- "Something is seriously wrong...\n";
- }
- }
- while (1) {
- # fork, because using SVN::Pool with get_log() still doesn't
- # seem to help enough to keep memory usage down.
- defined(my $pid = fork) or croak $!;
- if (!$pid) {
- $SVN::Error::handler = \&libsvn_skip_unknown_revs;
-
- # Yes I'm perfectly aware that the fourth argument
- # below is the limit revisions number. Unfortunately
- # performance sucks with it enabled, so it's much
- # faster to fetch revision ranges instead of relying
- # on the limiter.
- $SVN->dup->get_log([''], $min, $max, 0, 1, 1,
- sub {
- my $log_entry;
- if ($last_commit) {
- $log_entry = libsvn_fetch(
- $last_commit, @_);
- $last_commit = git_commit(
- $log_entry,
- $last_commit,
- @parents);
- } else {
- $log_entry = libsvn_new_tree(@_);
- $last_commit = git_commit(
- $log_entry, @parents);
- }
- });
- exit 0;
- }
- waitpid $pid, 0;
- croak $? if $?;
- ($last_rev, $last_commit) = svn_grab_base_rev();
- last if ($max >= $head);
- $min = $max + 1;
- $max += $inc;
- $max = $head if ($max > $head);
- $SVN = Git::SVN::Ra->new($SVN_URL);
- }
- restore_index($index);
- return { revision => $last_rev, commit => $last_commit };
-}
-
-sub commit {
+sub cmd_set_tree {
my (@commits) = @_;
- check_upgrade_needed();
if ($_stdin || !@commits) {
print "Reading from stdin...\n";
@commits = ();
} elsif (scalar @tmp > 1) {
push @revs, reverse(command('rev-list',@tmp));
} else {
- die "Failed to rev-parse $c\n";
+ fatal "Failed to rev-parse $c\n";
}
}
- commit_lib(@revs);
- print "Done committing ",scalar @revs," revisions to SVN\n";
-}
-
-sub commit_lib {
- my (@revs) = @_;
- my ($r_last, $cmt_last) = svn_grab_base_rev();
- defined $r_last or die "Must have an existing revision to commit\n";
- my $fetched = fetch();
- if ($r_last != $fetched->{revision}) {
- print STDERR "There are new revisions that were fetched ",
- "and need to be merged (or acknowledged) ",
- "before committing.\n",
- "last rev: $r_last\n",
- " current: $fetched->{revision}\n";
- exit 1;
- }
- my $commit_msg = "$GIT_SVN_DIR/.svn-commit.tmp.$$";
-
- my $repo;
- set_svn_commit_env();
- foreach my $c (@revs) {
- my $log_entry = get_commit_entry($c, $commit_msg);
-
- # fork for each commit because there's a memory leak I
- # can't track down... (it's probably in the SVN code)
- defined(my $pid = open my $fh, '-|') or croak $!;
- if (!$pid) {
- my $pool = SVN::Pool->new;
- my $ed = SVN::Git::Editor->new(
- { r => $r_last,
- ra => $SVN->dup,
- svn_path => $SVN->{svn_path},
- },
- $SVN->get_commit_editor(
- $log_entry->{log},
- sub {
- libsvn_commit_cb(
- @_, $c,
- $log_entry->{log},
- $r_last,
- $cmt_last)
- }, $pool)
- );
- my $mods = $ed->apply_diff($cmt_last, $c);
- if (@$mods == 0) {
- print "No changes\nr$r_last = $cmt_last\n";
- }
- $pool->clear;
- exit 0;
- }
- my ($r_new, $cmt_new, $no);
- while (<$fh>) {
- print $_;
- chomp;
- if (/^r(\d+) = ($sha1)$/o) {
- ($r_new, $cmt_new) = ($1, $2);
- } elsif ($_ eq 'No changes') {
- $no = 1;
- }
- }
- close $fh or exit 1;
- if (! defined $r_new && ! defined $cmt_new) {
- unless ($no) {
- die "Failed to parse revision information\n";
- }
- } else {
- ($r_last, $cmt_last) = ($r_new, $cmt_new);
- }
+ my $gs = Git::SVN->new;
+ my ($r_last, $cmt_last) = $gs->last_rev_commit;
+ $gs->fetch;
+ if ($r_last != $gs->{last_rev}) {
+ fatal "There are new revisions that were fetched ",
+ "and need to be merged (or acknowledged) ",
+ "before committing.\nlast rev: $r_last\n",
+ " current: $gs->{last_rev}\n";
}
- $ENV{LC_ALL} = 'C';
- unlink $commit_msg;
+ $gs->set_tree($_) foreach @revs;
+ print "Done committing ",scalar @revs," revisions to SVN\n";
}
sub cmd_dcommit {
\%log_entry;
}
-sub set_svn_commit_env {
- if (defined $LC_ALL) {
- $ENV{LC_ALL} = $LC_ALL;
- } else {
- delete $ENV{LC_ALL};
- }
-}
-
sub rev_list_raw {
my ($fh, $c) = command_output_pipe(qw/rev-list --pretty=raw/, @_);
return { fh => $fh, ctx => $c, t => { } };
return $ret;
}
-sub assert_revision_unknown {
- my $r = shift;
- if (my $c = revdb_get($REVDB, $r)) {
- croak "$r = $c already exists! Why are we refetching it?";
- }
-}
-
-sub git_commit {
- my ($log_entry, @parents) = @_;
- assert_revision_unknown($log_entry->{revision});
- map_tree_joins() if (@_branch_from && !%tree_map);
-
- my (@tmp_parents, @exec_parents, %seen_parent);
- if (my $lparents = $log_entry->{parents}) {
- @tmp_parents = @$lparents
- }
- # commit parents can be conditionally bound to a particular
- # svn revision via: "svn_revno=commit_sha1", filter them out here:
- foreach my $p (@parents) {
- next unless defined $p;
- if ($p =~ /^(\d+)=($sha1_short)$/o) {
- if ($1 == $log_entry->{revision}) {
- push @tmp_parents, $2;
- }
- } else {
- push @tmp_parents, $p if $p =~ /$sha1_short/o;
- }
- }
- my $tree = $log_entry->{tree};
- if (!defined $tree) {
- my $index = set_index($GIT_SVN_INDEX);
- $tree = command_oneline('write-tree');
- croak $? if $?;
- restore_index($index);
- }
- # just in case we clobber the existing ref, we still want that ref
- # as our parent:
- if (my $cur = verify_ref("refs/remotes/$GIT_SVN^0")) {
- chomp $cur;
- push @tmp_parents, $cur;
- }
-
- if (exists $tree_map{$tree}) {
- foreach my $p (@{$tree_map{$tree}}) {
- my $skip;
- foreach (@tmp_parents) {
- # see if a common parent is found
- my $mb = eval { command('merge-base', $_, $p) };
- next if ($@ || $?);
- $skip = 1;
- last;
- }
- next if $skip;
- my ($url_p, $r_p, $uuid_p) = cmt_metadata($p);
- next if (($SVN->uuid eq $uuid_p) &&
- ($log_entry->{revision} > $r_p));
- next if (defined $url_p && defined $SVN_URL &&
- ($SVN->uuid eq $uuid_p) &&
- ($url_p eq $SVN_URL));
- push @tmp_parents, $p;
- }
- }
- foreach (@tmp_parents) {
- next if $seen_parent{$_};
- $seen_parent{$_} = 1;
- push @exec_parents, $_;
- # MAXPARENT is defined to 16 in commit-tree.c:
- last if @exec_parents > 16;
- }
-
- set_commit_env($log_entry);
- my @exec = ('git-commit-tree', $tree);
- push @exec, '-p', $_ foreach @exec_parents;
- defined(my $pid = open3(my $msg_fh, my $out_fh, '>&STDERR', @exec))
- or croak $!;
- print $msg_fh $log_entry->{log} or croak $!;
- unless ($_no_metadata) {
- print $msg_fh "\ngit-svn-id: $SVN_URL\@$log_entry->{revision} ",
- $SVN->uuid,"\n" or croak $!;
- }
- $msg_fh->flush == 0 or croak $!;
- close $msg_fh or croak $!;
- chomp(my $commit = do { local $/; <$out_fh> });
- close $out_fh or croak $!;
- waitpid $pid, 0;
- croak $? if $?;
- if ($commit !~ /^$sha1$/o) {
- die "Failed to commit, invalid sha1: $commit\n";
- }
- command_noisy('update-ref',"refs/remotes/$GIT_SVN",$commit);
- revdb_set($REVDB, $log_entry->{revision}, $commit);
-
- # this output is read via pipe, do not change:
- print "r$log_entry->{revision} = $commit\n";
- return $commit;
-}
-
-sub check_repack {
- if ($_repack && (--$_repack_nr == 0)) {
- $_repack_nr = $_repack;
- # repack doesn't use any arguments with spaces in them, does it?
- command_noisy('repack', split(/\s+/, $_repack_flags));
- }
-}
-
-sub set_commit_env {
- my ($log_entry) = @_;
- my $author = $log_entry->{author};
- if (!defined $author || length $author == 0) {
- $author = '(no author)';
- }
- my ($name,$email) = defined $users{$author} ? @{$users{$author}}
- : ($author,$author . '@' . $SVN->uuid);
- $ENV{GIT_AUTHOR_NAME} = $ENV{GIT_COMMITTER_NAME} = $name;
- $ENV{GIT_AUTHOR_EMAIL} = $ENV{GIT_COMMITTER_EMAIL} = $email;
- $ENV{GIT_AUTHOR_DATE} = $ENV{GIT_COMMITTER_DATE} = $log_entry->{date};
-}
-
sub check_upgrade_needed {
if (!-r $REVDB) {
-d $GIT_SVN_DIR or mkpath([$GIT_SVN_DIR]);
foreach my $path (sort keys %$h) {
my $ppath = $path eq '' ? '.' : $path;
foreach my $prop (sort keys %{$h->{$path}}) {
- next if $SKIP{$prop};
+ next if $SKIP_PROP{$prop};
my $v = $h->{$path}->{$prop};
if (defined $v) {
print $fh " +$t: ",
sub set_tree {
my ($self, $tree) = (shift, shift);
- my $log_entry = get_commit_entry($tree);
+ my $log_entry = ::get_commit_entry($tree);
unless ($self->{last_rev}) {
fatal("Must have an existing revision to commit\n");
}
$f
}
-sub libsvn_log_entry {
- my ($rev, $author, $date, $log, $parents, $untracked) = @_;
- my ($Y,$m,$d,$H,$M,$S) = ($date =~ /^(\d{4})\-(\d\d)\-(\d\d)T
- (\d\d)\:(\d\d)\:(\d\d).\d+Z$/x)
- or die "Unable to parse date: $date\n";
- if (defined $author && length $author > 0 &&
- defined $_authors && ! defined $users{$author}) {
- die "Author: $author not defined in $_authors file\n";
- }
- $log = '' if ($rev == 0 && !defined $log);
-
- open my $un, '>>', "$GIT_SVN_DIR/unhandled.log" or croak $!;
- my $h;
- print $un "r$rev\n" or croak $!;
- $h = $untracked->{empty};
- foreach (sort keys %$h) {
- my $act = $h->{$_} ? '+empty_dir' : '-empty_dir';
- print $un " $act: ", uri_encode($_), "\n" or croak $!;
- warn "W: $act: $_\n";
- }
- foreach my $t (qw/dir_prop file_prop/) {
- $h = $untracked->{$t} or next;
- foreach my $path (sort keys %$h) {
- my $ppath = $path eq '' ? '.' : $path;
- foreach my $prop (sort keys %{$h->{$path}}) {
- next if $SKIP{$prop};
- my $v = $h->{$path}->{$prop};
- if (defined $v) {
- print $un " +$t: ",
- uri_encode($ppath), ' ',
- uri_encode($prop), ' ',
- uri_encode($v), "\n"
- or croak $!;
- } else {
- print $un " -$t: ",
- uri_encode($ppath), ' ',
- uri_encode($prop), "\n"
- or croak $!;
- }
- }
- }
- }
- foreach my $t (qw/absent_file absent_directory/) {
- $h = $untracked->{$t} or next;
- foreach my $parent (sort keys %$h) {
- foreach my $path (sort @{$h->{$parent}}) {
- print $un " $t: ",
- uri_encode("$parent/$path"), "\n"
- or croak $!;
- warn "W: $t: $parent/$path ",
- "Insufficient permissions?\n";
- }
- }
- }
-
- # revprops (make this optional? it's an extra network trip...)
- my $rp = $SVN->rev_proplist($rev);
- foreach (sort keys %$rp) {
- next if /^svn:(?:author|date|log)$/;
- print $un " rev_prop: ", uri_encode($_), ' ',
- uri_encode($rp->{$_}), "\n";
- }
- close $un or croak $!;
-
- { revision => $rev, date => "+0000 $Y-$m-$d $H:$M:$S",
- author => $author, log => $log."\n", parents => $parents || [],
- revprops => $rp }
-}
-
-sub libsvn_fetch {
- my ($last_commit, $paths, $rev, $author, $date, $log) = @_;
- my $ed = SVN::Git::Fetcher->new({ c => $last_commit, q => $_q });
- my (undef, $last_rev, undef) = cmt_metadata($last_commit);
- unless ($SVN->gs_do_update($last_rev, $rev, '', 1, $ed)) {
- die "SVN connection failed somewhere...\n";
- }
- libsvn_log_entry($rev, $author, $date, $log, [$last_commit], $ed);
-}
-
-sub svn_grab_base_rev {
- my $c = eval { command_oneline([qw/rev-parse --verify/,
- "refs/remotes/$GIT_SVN^0"],
- { STDERR => 0 }) };
- if (defined $c && length $c) {
- my ($url, $rev, $uuid) = cmt_metadata($c);
- return ($rev, $c) if defined $rev;
- }
- if ($_no_metadata) {
- my $offset = -41; # from tail
- my $rl;
- open my $fh, '<', $REVDB or
- die "--no-metadata specified and $REVDB not readable\n";
- seek $fh, $offset, 2;
- $rl = readline $fh;
- defined $rl or return (undef, undef);
- chomp $rl;
- while ($c ne $rl && tell $fh != 0) {
- $offset -= 41;
- seek $fh, $offset, 2;
- $rl = readline $fh;
- defined $rl or return (undef, undef);
- chomp $rl;
- }
- my $rev = tell $fh;
- croak $! if ($rev < -1);
- $rev = ($rev - 41) / 41;
- close $fh or croak $!;
- return ($rev, $c);
- }
- return (undef, undef);
-}
-
sub libsvn_parse_revision {
my $base = shift;
my $head = $SVN->get_latest_revnum();
return undef;
}
-sub libsvn_new_tree {
- if (my $log_entry = libsvn_find_parent_branch(@_)) {
- return $log_entry;
- }
- my ($paths, $rev, $author, $date, $log) = @_; # $pool is last
- _libsvn_new_tree($paths, $rev, $author, $date, $log, []);
-}
-
sub _libsvn_new_tree {
my ($paths, $rev, $author, $date, $log, $parents) = @_;
my $ed = SVN::Git::Fetcher->new({q => $_q});
}
}
-sub set_index {
- my $old = $ENV{GIT_INDEX_FILE};
- $ENV{GIT_INDEX_FILE} = shift;
- return $old;
-}
-
-sub restore_index {
- my ($old) = @_;
- if (defined $old) {
- $ENV{GIT_INDEX_FILE} = $old;
- } else {
- delete $ENV{GIT_INDEX_FILE};
- }
-}
-
-sub libsvn_commit_cb {
- my ($rev, $date, $committer, $c, $log, $r_last, $cmt_last) = @_;
- if ($_optimize_commits && $rev == ($r_last + 1)) {
- my $log = libsvn_log_entry($rev,$committer,$date,$log);
- $log->{tree} = get_tree_from_treeish($c);
- my $cmt = git_commit($log, $cmt_last, $c);
- my @diff = command('diff-tree', $cmt, $c);
- if (@diff) {
- print STDERR "Trees differ: $cmt $c\n",
- join('',@diff),"\n";
- exit 1;
- }
- } else {
- fetch("$rev=$c");
- }
-}
-
-sub libsvn_skip_unknown_revs {
- my $err = shift;
- my $errno = $err->apr_err();
- # Maybe the branch we're tracking didn't
- # exist when the repo started, so it's
- # not an error if it doesn't, just continue
- #
- # Wonderfully consistent library, eh?
- # 160013 - svn:// and file://
- # 175002 - http(s)://
- # 175007 - http(s):// (this repo required authorization, too...)
- # More codes may be discovered later...
- if ($errno == 175007 || $errno == 175002 || $errno == 160013) {
- return;
- }
- croak "Error from SVN, ($errno): ", $err->expanded_message,"\n";
-};
-
-# Tie::File seems to be prone to offset errors if revisions get sparse,
-# it's not that fast, either. Tie::File is also not in Perl 5.6. So
-# one of my favorite modules is out :< Next up would be one of the DBM
-# modules, but I'm not sure which is most portable... So I'll just
-# go with something that's plain-text, but still capable of
-# being randomly accessed. So here's my ultra-simple fixed-width
-# database. All records are 40 characters + "\n", so it's easy to seek
-# to a revision: (41 * rev) is the byte offset.
-# A record of 40 0s denotes an empty revision.
-# And yes, it's still pretty fast (faster than Tie::File).
-sub revdb_set {
- my ($file, $rev, $commit) = @_;
- length $commit == 40 or croak "arg3 must be a full SHA1 hexsum\n";
- open my $fh, '+<', $file or croak $!;
- my $offset = $rev * 41;
- # assume that append is the common case:
- seek $fh, 0, 2 or croak $!;
- my $pos = tell $fh;
- if ($pos < $offset) {
- print $fh (('0' x 40),"\n") x (($offset - $pos) / 41);
- }
- seek $fh, $offset, 0 or croak $!;
- print $fh $commit,"\n";
- close $fh or croak $!;
-}
-
sub revdb_get {
my ($file, $rev) = @_;
my $ret;