push @SVN::Git::Editor::ISA, 'SVN::Delta::Editor';
push @SVN::Git::Fetcher::ISA, 'SVN::Delta::Editor';
use Carp qw/croak/;
+use Digest::MD5;
use IO::File qw//;
use File::Basename qw/dirname basename/;
use File::Path qw/mkpath/;
foreach (qw/command command_oneline command_noisy command_output_pipe
command_input_pipe command_close_pipe/) {
for my $package ( qw(SVN::Git::Editor SVN::Git::Fetcher
- Git::SVN::Migration Git::SVN::Log Git::SVN
- Git::SVN::Util),
+ Git::SVN::Migration Git::SVN::Log Git::SVN),
__PACKAGE__) {
*{"${package}::$_"} = \&{"Git::$_"};
}
'quiet|q' => \$_q,
'repack-flags|repack-args|repack-opts=s' =>
\$Git::SVN::_repack_flags,
+ 'use-log-author' => \$Git::SVN::_use_log_author,
%remote_opts );
my ($_trunk, $_tags, $_branches, $_stdlayout);
'show-ignore' => [ \&cmd_show_ignore, "Show svn:ignore listings",
{ 'revision|r=i' => \$_revision
} ],
+ 'show-externals' => [ \&cmd_show_externals, "Show svn:externals listings",
+ { 'revision|r=i' => \$_revision
+ } ],
'multi-fetch' => [ \&cmd_multi_fetch,
"Deprecated alias for $0 fetch --all",
{ 'revision|r=s' => \$_revision, %fc_opts } ],
"Show info about the latest SVN revision
on the current branch",
{ 'url' => \$_url, } ],
+ 'blame' => [ \&Git::SVN::Log::cmd_blame,
+ "Show what revision and author last modified each line of a file",
+ {} ],
);
my $cmd;
}
};
-# make sure we're always running
-unless ($cmd =~ /(?:clone|init|multi-init)$/) {
+# make sure we're always running at the top-level working directory
+unless ($cmd && $cmd =~ /(?:clone|init|multi-init)$/) {
unless (-d $ENV{GIT_DIR}) {
if ($git_dir_user_set) {
die "GIT_DIR=$ENV{GIT_DIR} explicitly set, ",
}
$gs->set_tree($_) foreach @revs;
print "Done committing ",scalar @revs," revisions to SVN\n";
+ unlink $gs->{index};
}
sub cmd_dcommit {
warn "Attempting to commit more than one change while ",
"--no-rebase is enabled.\n",
"If these changes depend on each other, re-running ",
- "without --no-rebase will be required."
+ "without --no-rebase may be required."
}
while (1) {
my $d = shift @$linear_refs or last;
$parents->{$d};
}
$_fetch_all ? $gs->fetch_all : $gs->fetch;
+ $last_rev = $cmt_rev;
next if $_no_rebase;
# we always want to rebase against the current HEAD,
$parents = \%p;
$linear_refs = \@l;
}
- $last_rev = $cmt_rev;
}
}
+ unlink $gs->{index};
}
sub cmd_find_rev {
"$head history\n";
}
my $desired_revision = substr($revision_or_hash, 1);
- $result = $gs->rev_db_get($desired_revision);
+ $result = $gs->rev_map_get($desired_revision);
} else {
my (undef, $rev, undef) = cmt_metadata($revision_or_hash);
$result = $rev;
exit 1;
}
unless ($_local) {
+ # rebase will checkout for us, so no need to do it explicitly
+ $_no_checkout = 'true';
$_fetch_all ? $gs->fetch_all : $gs->fetch;
}
command_noisy(rebase_cmd(), $gs->refname);
});
}
+sub cmd_show_externals {
+ my ($url, $rev, $uuid, $gs) = working_head_info('HEAD');
+ $gs ||= Git::SVN->new;
+ my $r = (defined $_revision ? $_revision : $gs->ra->get_latest_revnum);
+ $gs->prop_walk($gs->{path}, $r, sub {
+ my ($gs, $path, $props) = @_;
+ print STDOUT "\n# $path\n";
+ my $s = $props->{'svn:externals'} or return;
+ $s =~ s/[\r\n]+/\n/g;
+ chomp $s;
+ $s =~ s#^#$path#gm;
+ print STDOUT "$s\n";
+ });
+}
+
sub cmd_create_ignore {
my ($url, $rev, $uuid, $gs) = working_head_info('HEAD');
$gs ||= Git::SVN->new;
command_output_pipe(qw(cat-file blob), "HEAD:$path");
if ($file_type eq "link") {
my $file_name = <$fh>;
- $checksum = Git::SVN::Util::md5sum("link $file_name");
+ $checksum = md5sum("link $file_name");
} else {
- $checksum = Git::SVN::Util::md5sum($fh);
+ $checksum = md5sum($fh);
}
command_close_pipe($fh, $ctx);
} elsif ($file_type eq "link") {
my $file_name =
command(qw(cat-file blob), "HEAD:$path");
$checksum =
- Git::SVN::Util::md5sum("link " . $file_name);
+ md5sum("link " . $file_name);
} else {
open FILE, "<", $path or die $!;
- $checksum = Git::SVN::Util::md5sum(\*FILE);
+ $checksum = md5sum(\*FILE);
close FILE or die $!;
}
$result .= "Checksum: " . $checksum . "\n";
if (defined $url && defined $rev) {
next if $max{$url} and $max{$url} < $rev;
if (my $gs = Git::SVN->find_by_url($url)) {
- my $c = $gs->rev_db_get($rev);
+ my $c = $gs->rev_map_get($rev);
if ($c && $c eq $hash) {
close $fh; # break the pipe
return ($url, $rev, $uuid, $gs);
} else {
- $max{$url} ||= $gs->rev_db_max;
+ $max{$url} ||= $gs->rev_map_max;
}
}
}
return ("file", $diff_status);
}
-package Git::SVN::Util;
-use strict;
-use warnings;
-use Digest::MD5;
-
sub md5sum {
my $arg = shift;
my $ref = ref $arg;
package Git::SVN;
use strict;
use warnings;
+use Fcntl qw/:DEFAULT :seek/;
+use constant rev_map_fmt => 'NH40';
use vars qw/$default_repo_id $default_ref_id $_no_metadata $_follow_parent
$_repack $_repack_flags $_use_svm_props $_head
- $_use_svnsync_props $no_reuse_existing $_minimize_url/;
+ $_use_svnsync_props $no_reuse_existing $_minimize_url
+ $_use_log_author/;
use Carp qw/croak/;
use File::Path qw/mkpath/;
use File::Copy qw/copy/;
use IPC::Open3;
-my $_repack_nr;
+my ($_gc_nr, $_gc_period);
+
# properties that we do not log:
my %SKIP_PROP;
BEGIN {
}
}
-my %LOCKFILES;
-END { unlink keys %LOCKFILES if %LOCKFILES }
+my (%LOCKFILES, %INDEX_FILES);
+END {
+ unlink keys %LOCKFILES if %LOCKFILES;
+ unlink keys %INDEX_FILES if %INDEX_FILES;
+}
sub resolve_local_globs {
my ($url, $fetch, $glob_spec) = @_;
if ($fetch) {
foreach my $p (sort keys %$fetch) {
my $gs = Git::SVN->new($fetch->{$p}, $repo_id, $p);
- my $lr = $gs->rev_db_max;
+ my $lr = $gs->rev_map_max;
if (defined $lr) {
$base = $lr if ($lr < $base);
}
}
sub init_vars {
- if (defined $_repack) {
- $_repack = 1000 if ($_repack <= 0);
- $_repack_nr = $_repack;
- $_repack_flags ||= '-d';
+ $_gc_nr = $_gc_period = 1000;
+ if (defined $_repack || defined $_repack_flags) {
+ warn "Repack options are obsolete; they have no effect.\n";
}
}
# see if we have it in our config, first:
eval {
my $section = "svn-remote.$self->{repo_id}";
- $svnsync = {
- url => tmp_config('--get', "$section.svnsync-url"),
- uuid => tmp_config('--get', "$section.svnsync-uuid"),
- }
+
+ my $url = tmp_config('--get', "$section.svnsync-url");
+ ($url) = ($url =~ m{^([a-z\+]+://\S+)$}) or
+ die "doesn't look right - svn:sync-from-url is '$url'\n";
+
+ my $uuid = tmp_config('--get', "$section.svnsync-uuid");
+ ($uuid) = ($uuid =~ m{^([0-9a-f\-]{30,})$}) or
+ die "doesn't look right - svn:sync-from-uuid is '$uuid'\n";
+
+ $svnsync = { url => $url, uuid => $uuid }
};
if ($svnsync && $svnsync->{url} && $svnsync->{uuid}) {
return $self->{svnsync} = $svnsync;
my $rp = $self->ra->rev_proplist(0);
my $url = $rp->{'svn:sync-from-url'} or die $err . "url\n";
- $url =~ m{^[a-z\+]+://} or
+ ($url) = ($url =~ m{^([a-z\+]+://\S+)$}) or
die "doesn't look right - svn:sync-from-url is '$url'\n";
my $uuid = $rp->{'svn:sync-from-uuid'} or die $err . "uuid\n";
- $uuid =~ m{^[0-9a-f\-]{30,}$} or
+ ($uuid) = ($uuid =~ m{^([0-9a-f\-]{30,})$}) or
die "doesn't look right - svn:sync-from-uuid is '$uuid'\n";
my $section = "svn-remote.$self->{repo_id}";
sub prop_walk {
my ($self, $path, $rev, $sub) = @_;
+ $path =~ s#^/##;
my ($dirent, undef, $props) = $self->ra->get_dir($path, $rev);
$path =~ s#^/*#/#g;
my $p = $path;
return ($rev, $c);
}
}
- my $db_path = $self->db_path;
- unless (-e $db_path) {
+ my $map_path = $self->map_path;
+ unless (-e $map_path) {
($self->{last_rev}, $self->{last_commit}) = (undef, undef);
return (undef, undef);
}
- my $offset = -41; # from tail
- my $rl;
- open my $fh, '<', $db_path or croak "$db_path not readable: $!\n";
- sysseek($fh, $offset, 2); # don't care for errors
- sysread($fh, $rl, 41) == 41 or return (undef, undef);
- chomp $rl;
- while (('0' x40) eq $rl && sysseek($fh, 0, 1) != 0) {
- $offset -= 41;
- sysseek($fh, $offset, 2); # don't care for errors
- sysread($fh, $rl, 41) == 41 or return (undef, undef);
- chomp $rl;
- }
- if ($c && $c ne $rl) {
- die "$db_path and ", $self->refname,
- " inconsistent!:\n$c != $rl\n";
- }
- my $rev = sysseek($fh, 0, 1) or croak $!;
- $rev = ($rev - 41) / 41;
- close $fh or croak $!;
- ($self->{last_rev}, $self->{last_commit}) = ($rev, $c);
- return ($rev, $c);
+ my ($rev, $commit) = $self->rev_map_max(1);
+ ($self->{last_rev}, $self->{last_commit}) = ($rev, $commit);
+ return ($rev, $commit);
}
sub get_fetch_range {
my ($self, $min, $max) = @_;
$max ||= $self->ra->get_latest_revnum;
- $min ||= $self->rev_db_max;
+ $min ||= $self->rev_map_max;
(++$min, $max);
}
$self->{url} . (length $self->{path} ? '/' . $self->{path} : '');
}
+
+sub set_commit_header_env {
+ my ($log_entry) = @_;
+ my %env;
+ foreach my $ned (qw/NAME EMAIL DATE/) {
+ foreach my $ac (qw/AUTHOR COMMITTER/) {
+ $env{"GIT_${ac}_${ned}"} = $ENV{"GIT_${ac}_${ned}"};
+ }
+ }
+
+ $ENV{GIT_AUTHOR_NAME} = $log_entry->{name};
+ $ENV{GIT_AUTHOR_EMAIL} = $log_entry->{email};
+ $ENV{GIT_AUTHOR_DATE} = $ENV{GIT_COMMITTER_DATE} = $log_entry->{date};
+
+ $ENV{GIT_COMMITTER_NAME} = (defined $log_entry->{commit_name})
+ ? $log_entry->{commit_name}
+ : $log_entry->{name};
+ $ENV{GIT_COMMITTER_EMAIL} = (defined $log_entry->{commit_email})
+ ? $log_entry->{commit_email}
+ : $log_entry->{email};
+ \%env;
+}
+
+sub restore_commit_header_env {
+ my ($env) = @_;
+ foreach my $ned (qw/NAME EMAIL DATE/) {
+ foreach my $ac (qw/AUTHOR COMMITTER/) {
+ my $k = "GIT_${ac}_${ned}";
+ if (defined $env->{$k}) {
+ $ENV{$k} = $env->{$k};
+ } else {
+ delete $ENV{$k};
+ }
+ }
+ }
+}
+
+sub gc {
+ command_noisy('gc', '--auto');
+};
+
sub do_git_commit {
my ($self, $log_entry) = @_;
my $lr = $self->last_rev;
" was r$lr, but we are about to fetch: ",
"r$log_entry->{revision}!\n";
}
- if (my $c = $self->rev_db_get($log_entry->{revision})) {
+ if (my $c = $self->rev_map_get($log_entry->{revision})) {
croak "$log_entry->{revision} = $c already exists! ",
"Why are we refetching it?\n";
}
- $ENV{GIT_AUTHOR_NAME} = $ENV{GIT_COMMITTER_NAME} = $log_entry->{name};
- $ENV{GIT_AUTHOR_EMAIL} = $ENV{GIT_COMMITTER_EMAIL} =
- $log_entry->{email};
- $ENV{GIT_AUTHOR_DATE} = $ENV{GIT_COMMITTER_DATE} = $log_entry->{date};
-
+ my $old_env = set_commit_header_env($log_entry);
my $tree = $log_entry->{tree};
if (!defined $tree) {
$tree = $self->tmp_index_do(sub {
defined(my $pid = open3(my $msg_fh, my $out_fh, '>&STDERR', @exec))
or croak $!;
print $msg_fh $log_entry->{log} or croak $!;
+ restore_commit_header_env($old_env);
unless ($self->no_metadata) {
print $msg_fh "\ngit-svn-id: $log_entry->{metadata}\n"
or croak $!;
die "Failed to commit, invalid sha1: $commit\n";
}
- $self->rev_db_set($log_entry->{revision}, $commit, 1);
+ $self->rev_map_set($log_entry->{revision}, $commit, 1);
$self->{last_rev} = $log_entry->{revision};
$self->{last_commit} = $commit;
print "r$log_entry->{revision}";
if (defined $log_entry->{svm_revision}) {
print " (\@$log_entry->{svm_revision})";
- $self->rev_db_set($log_entry->{svm_revision}, $commit,
+ $self->rev_map_set($log_entry->{svm_revision}, $commit,
0, $self->svm_uuid);
}
print " = $commit ($self->{ref_id})\n";
- if (defined $_repack && (--$_repack_nr == 0)) {
- $_repack_nr = $_repack;
- # repack doesn't use any arguments with spaces in them, does it?
- print "Running git repack $_repack_flags ...\n";
- command_noisy('repack', split(/\s+/, $_repack_flags));
- print "Done repacking\n";
+ if (--$_gc_nr == 0) {
+ $_gc_nr = $_gc_period;
+ gc();
}
return $commit;
}
# just grow a tail if we're not unique enough :x
$ref_id .= '-' while find_ref($ref_id);
print STDERR "Initializing parent: $ref_id\n";
- $gs = Git::SVN->init($new_url, '', $ref_id, $ref_id, 1);
+ my ($u, $p) = ($new_url, '');
+ if ($u =~ s#^\Q$url\E(/|$)##) {
+ $p = $u;
+ $u = $url;
+ }
+ $gs = Git::SVN->init($u, $p, $self->{repo_id}, $ref_id, 1);
}
my ($r0, $parent) = $gs->find_rev_before($r, 1);
if (!defined $r0 || !defined $parent) {
$log_entry{log} .= "\n";
my $author = $log_entry{author} = check_author($log_entry{author});
my ($name, $email) = defined $::users{$author} ? @{$::users{$author}}
- : ($author, undef);
+ : ($author, undef);
+
+ my ($commit_name, $commit_email) = ($name, $email);
+ if ($_use_log_author) {
+ my $name_field;
+ if ($log_entry{log} =~ /From:\s+(.*\S)\s*\n/i) {
+ $name_field = $1;
+ } elsif ($log_entry{log} =~ /Signed-off-by:\s+(.*\S)\s*\n/i) {
+ $name_field = $1;
+ }
+ if (!defined $name_field) {
+ #
+ } elsif ($name_field =~ /(.*?)\s+<(.*)>/) {
+ ($name, $email) = ($1, $2);
+ } elsif ($name_field =~ /(.*)@/) {
+ ($name, $email) = ($1, $name_field);
+ } else {
+ ($name, $email) = ($name_field, 'unknown');
+ }
+ }
if (defined $headrev && $self->use_svm_props) {
if ($self->rewrite_root) {
die "Can't have both 'useSvmProps' and 'rewriteRoot' ",
remove_username($full_url);
$log_entry{metadata} = "$full_url\@$r $uuid";
$log_entry{svm_revision} = $r;
- $email ||= "$author\@$uuid"
+ $email ||= "$author\@$uuid";
+ $commit_email ||= "$author\@$uuid";
} elsif ($self->use_svnsync_props) {
my $full_url = $self->svnsync->{url};
$full_url .= "/$self->{path}" if length $self->{path};
remove_username($full_url);
my $uuid = $self->svnsync->{uuid};
$log_entry{metadata} = "$full_url\@$rev $uuid";
- $email ||= "$author\@$uuid"
+ $email ||= "$author\@$uuid";
+ $commit_email ||= "$author\@$uuid";
} else {
my $url = $self->metadata_url;
remove_username($url);
$log_entry{metadata} = "$url\@$rev " .
$self->ra->get_uuid;
$email ||= "$author\@" . $self->ra->get_uuid;
+ $commit_email ||= "$author\@" . $self->ra->get_uuid;
}
$log_entry{name} = $name;
$log_entry{email} = $email;
+ $log_entry{commit_name} = $commit_name;
+ $log_entry{commit_email} = $commit_email;
\%log_entry;
}
}
}
+sub rebuild_from_rev_db {
+ my ($self, $path) = @_;
+ my $r = -1;
+ open my $fh, '<', $path or croak "open: $!";
+ while (<$fh>) {
+ length($_) == 41 or croak "inconsistent size in ($_) != 41";
+ chomp($_);
+ ++$r;
+ next if $_ eq ('0' x 40);
+ $self->rev_map_set($r, $_);
+ print "r$r = $_\n";
+ }
+ close $fh or croak "close: $!";
+ unlink $path or croak "unlink: $!";
+}
+
sub rebuild {
my ($self) = @_;
- my $db_path = $self->db_path;
- return if (-e $db_path && ! -z $db_path);
+ my $map_path = $self->map_path;
+ return if (-e $map_path && ! -z $map_path);
return unless ::verify_ref($self->refname.'^0');
- if (-f $self->{db_root}) {
- rename $self->{db_root}, $db_path or die
- "rename $self->{db_root} => $db_path failed: $!\n";
- my ($dir, $base) = ($db_path =~ m#^(.*?)/?([^/]+)$#);
- symlink $base, $self->{db_root} or die
- "symlink $base => $self->{db_root} failed: $!\n";
+ if ($self->use_svm_props || $self->no_metadata) {
+ my $rev_db = $self->rev_db_path;
+ $self->rebuild_from_rev_db($rev_db);
+ if ($self->use_svm_props) {
+ my $svm_rev_db = $self->rev_db_path($self->svm_uuid);
+ $self->rebuild_from_rev_db($svm_rev_db);
+ }
+ $self->unlink_rev_db_symlink;
return;
}
- print "Rebuilding $db_path ...\n";
- my ($log, $ctx) = command_output_pipe("log", '--no-color', $self->refname);
- my $latest;
+ print "Rebuilding $map_path ...\n";
+ my ($log, $ctx) =
+ command_output_pipe(qw/rev-list --pretty=raw --no-color --reverse/,
+ $self->refname, '--');
my $full_url = $self->full_url;
remove_username($full_url);
- my $svn_uuid;
+ my $svn_uuid = $self->ra_uuid;
my $c;
while (<$log>) {
if ( m{^commit ($::sha1)$} ) {
# if we merged or otherwise started elsewhere, this is
# how we break out of it
- if ((defined $svn_uuid && ($uuid ne $svn_uuid)) ||
+ if (($uuid ne $svn_uuid) ||
($full_url && $url && ($url ne $full_url))) {
next;
}
- $latest ||= $rev;
- $svn_uuid ||= $uuid;
- $self->rev_db_set($rev, $c);
+ $self->rev_map_set($rev, $c);
print "r$rev = $c\n";
}
command_close_pipe($log, $ctx);
- print "Done rebuilding $db_path\n";
+ print "Done rebuilding $map_path\n";
+ my $rev_db_path = $self->rev_db_path;
+ if (-f $self->rev_db_path) {
+ unlink $self->rev_db_path or croak "unlink: $!";
+ }
+ $self->unlink_rev_db_symlink;
}
-# rev_db:
+# rev_map:
# Tie::File seems to be prone to offset errors if revisions get sparse,
# it's not that fast, either. Tie::File is also not in Perl 5.6. So
# one of my favorite modules is out :< Next up would be one of the DBM
-# modules, but I'm not sure which is most portable... So I'll just
-# go with something that's plain-text, but still capable of
-# being randomly accessed. So here's my ultra-simple fixed-width
-# database. All records are 40 characters + "\n", so it's easy to seek
-# to a revision: (41 * rev) is the byte offset.
-# A record of 40 0s denotes an empty revision.
-# And yes, it's still pretty fast (faster than Tie::File).
+# modules, but I'm not sure which is most portable...
+#
+# This is the replacement for the rev_db format, which was too big
+# and inefficient for large repositories with a lot of sparse history
+# (mainly tags)
+#
+# The format is this:
+# - 24 bytes for every record,
+# * 4 bytes for the integer representing an SVN revision number
+# * 20 bytes representing the sha1 of a git commit
+# - No empty padding records like the old format
+# (except the last record, which can be overwritten)
+# - new records are written append-only since SVN revision numbers
+# increase monotonically
+# - lookups on SVN revision number are done via a binary search
+# - Piping the file to xxd -c24 is a good way of dumping it for
+# viewing or editing (piped back through xxd -r), should the need
+# ever arise.
+# - The last record can be padding revision with an all-zero sha1
+# This is used to optimize fetch performance when using multiple
+# "fetch" directives in .git/config
+#
# These files are disposable unless noMetadata or useSvmProps is set
-sub _rev_db_set {
+sub _rev_map_set {
my ($fh, $rev, $commit) = @_;
- my $offset = $rev * 41;
- # assume that append is the common case:
- seek $fh, 0, 2 or croak $!;
- my $pos = tell $fh;
- if ($pos < $offset) {
- for (1 .. (($offset - $pos) / 41)) {
- print $fh (('0' x 40),"\n") or croak $!;
+
+ my $size = (stat($fh))[7];
+ ($size % 24) == 0 or croak "inconsistent size: $size";
+
+ my $wr_offset = 0;
+ if ($size > 0) {
+ sysseek($fh, -24, SEEK_END) or croak "seek: $!";
+ my $read = sysread($fh, my $buf, 24) or croak "read: $!";
+ $read == 24 or croak "read only $read bytes (!= 24)";
+ my ($last_rev, $last_commit) = unpack(rev_map_fmt, $buf);
+ if ($last_commit eq ('0' x40)) {
+ if ($size >= 48) {
+ sysseek($fh, -48, SEEK_END) or croak "seek: $!";
+ $read = sysread($fh, $buf, 24) or
+ croak "read: $!";
+ $read == 24 or
+ croak "read only $read bytes (!= 24)";
+ ($last_rev, $last_commit) =
+ unpack(rev_map_fmt, $buf);
+ if ($last_commit eq ('0' x40)) {
+ croak "inconsistent .rev_map\n";
+ }
+ }
+ if ($last_rev >= $rev) {
+ croak "last_rev is higher!: $last_rev >= $rev";
+ }
+ $wr_offset = -24;
}
}
- seek $fh, $offset, 0 or croak $!;
- print $fh $commit,"\n" or croak $!;
+ sysseek($fh, $wr_offset, SEEK_END) or croak "seek: $!";
+ syswrite($fh, pack(rev_map_fmt, $rev, $commit), 24) == 24 or
+ croak "write: $!";
}
sub mkfile {
}
}
-sub rev_db_set {
+sub rev_map_set {
my ($self, $rev, $commit, $update_ref, $uuid) = @_;
length $commit == 40 or die "arg3 must be a full SHA1 hexsum\n";
- my $db = $self->db_path($uuid);
+ my $db = $self->map_path($uuid);
my $db_lock = "$db.lock";
my $sig;
if ($update_ref) {
# and we can't afford to lose it because rebuild() won't work
if ($self->use_svm_props || $self->no_metadata) {
$sync = 1;
- copy($db, $db_lock) or die "rev_db_set(@_): ",
+ copy($db, $db_lock) or die "rev_map_set(@_): ",
"Failed to copy: ",
"$db => $db_lock ($!)\n";
} else {
- rename $db, $db_lock or die "rev_db_set(@_): ",
+ rename $db, $db_lock or die "rev_map_set(@_): ",
"Failed to rename: ",
"$db => $db_lock ($!)\n";
}
- open my $fh, '+<', $db_lock or die "Couldn't open $db_lock: $!\n";
- _rev_db_set($fh, $rev, $commit);
+
+ sysopen(my $fh, $db_lock, O_RDWR | O_CREAT)
+ or croak "Couldn't open $db_lock: $!\n";
+ _rev_map_set($fh, $rev, $commit);
if ($sync) {
$fh->flush or die "Couldn't flush $db_lock: $!\n";
$fh->sync or die "Couldn't sync $db_lock: $!\n";
command_noisy('update-ref', '-m', "r$rev",
$self->refname, $commit);
}
- rename $db_lock, $db or die "rev_db_set(@_): ", "Failed to rename: ",
+ rename $db_lock, $db or die "rev_map_set(@_): ", "Failed to rename: ",
"$db_lock => $db ($!)\n";
delete $LOCKFILES{$db_lock};
if ($update_ref) {
}
}
-sub rev_db_max {
- my ($self) = @_;
+# If want_commit, this will return an array of (rev, commit) where
+# commit _must_ be a valid commit in the archive.
+# Otherwise, it'll return the max revision (whether or not the
+# commit is valid or just a 0x40 placeholder).
+sub rev_map_max {
+ my ($self, $want_commit) = @_;
$self->rebuild;
- my $db_path = $self->db_path;
- my @stat = stat $db_path or return 0;
- ($stat[7] % 41) == 0 or die "$db_path inconsistent size: $stat[7]\n";
- my $max = $stat[7] / 41;
- (($max > 0) ? $max - 1 : 0);
+ my $map_path = $self->map_path;
+ stat $map_path or return $want_commit ? (0, undef) : 0;
+ sysopen(my $fh, $map_path, O_RDONLY) or croak "open: $!";
+ my $size = (stat($fh))[7];
+ ($size % 24) == 0 or croak "inconsistent size: $size";
+
+ if ($size == 0) {
+ close $fh or croak "close: $!";
+ return $want_commit ? (0, undef) : 0;
+ }
+
+ sysseek($fh, -24, SEEK_END) or croak "seek: $!";
+ sysread($fh, my $buf, 24) == 24 or croak "read: $!";
+ my ($r, $c) = unpack(rev_map_fmt, $buf);
+ if ($want_commit && $c eq ('0' x40)) {
+ if ($size < 48) {
+ return $want_commit ? (0, undef) : 0;
+ }
+ sysseek($fh, -48, SEEK_END) or croak "seek: $!";
+ sysread($fh, $buf, 24) == 24 or croak "read: $!";
+ ($r, $c) = unpack(rev_map_fmt, $buf);
+ if ($c eq ('0'x40)) {
+ croak "Penultimate record is all-zeroes in $map_path";
+ }
+ }
+ close $fh or croak "close: $!";
+ $want_commit ? ($r, $c) : $r;
}
-sub rev_db_get {
+sub rev_map_get {
my ($self, $rev, $uuid) = @_;
- my $ret;
- my $offset = $rev * 41;
- my $db_path = $self->db_path($uuid);
- return undef unless -e $db_path;
- open my $fh, '<', $db_path or croak $!;
- if (sysseek($fh, $offset, 0) == $offset) {
- my $read = sysread($fh, $ret, 40);
- $ret = undef if ($read != 40 || $ret eq ('0'x40));
+ my $map_path = $self->map_path($uuid);
+ return undef unless -e $map_path;
+
+ sysopen(my $fh, $map_path, O_RDONLY) or croak "open: $!";
+ my $size = (stat($fh))[7];
+ ($size % 24) == 0 or croak "inconsistent size: $size";
+
+ if ($size == 0) {
+ close $fh or croak "close: $fh";
+ return undef;
}
- close $fh or croak $!;
- $ret;
+
+ my ($l, $u) = (0, $size - 24);
+ my ($r, $c, $buf);
+
+ while ($l <= $u) {
+ my $i = int(($l/24 + $u/24) / 2) * 24;
+ sysseek($fh, $i, SEEK_SET) or croak "seek: $!";
+ sysread($fh, my $buf, 24) == 24 or croak "read: $!";
+ my ($r, $c) = unpack('NH40', $buf);
+
+ if ($r < $rev) {
+ $l = $i + 24;
+ } elsif ($r > $rev) {
+ $u = $i - 24;
+ } else { # $r == $rev
+ close($fh) or croak "close: $!";
+ return $c eq ('0' x 40) ? undef : $c;
+ }
+ }
+ close($fh) or croak "close: $!";
+ undef;
}
# Finds the first svn revision that exists on (if $eq_ok is true) or
--$rev unless $eq_ok;
$min_rev ||= 1;
while ($rev >= $min_rev) {
- if (my $c = $self->rev_db_get($rev)) {
+ if (my $c = $self->rev_map_get($rev)) {
return ($rev, $c);
}
--$rev;
sub find_rev_after {
my ($self, $rev, $eq_ok, $max_rev) = @_;
++$rev unless $eq_ok;
- $max_rev ||= $self->rev_db_max();
+ $max_rev ||= $self->rev_map_max;
while ($rev <= $max_rev) {
- if (my $c = $self->rev_db_get($rev)) {
+ if (my $c = $self->rev_map_get($rev)) {
return ($rev, $c);
}
++$rev;
bless {
ref_id => $ref_id, dir => $dir, index => "$dir/index",
path => $path, config => "$ENV{GIT_DIR}/svn/config",
- db_root => "$dir/.rev_db", repo_id => $repo_id }, $class;
+ map_root => "$dir/.rev_map", repo_id => $repo_id }, $class;
}
-sub db_path {
+# for read-only access of old .rev_db formats
+sub unlink_rev_db_symlink {
+ my ($self) = @_;
+ my $link = $self->rev_db_path;
+ $link =~ s/\.[\w-]+$// or croak "missing UUID at the end of $link";
+ if (-l $link) {
+ unlink $link or croak "unlink: $link failed!";
+ }
+}
+
+sub rev_db_path {
+ my ($self, $uuid) = @_;
+ my $db_path = $self->map_path($uuid);
+ $db_path =~ s{/\.rev_map\.}{/\.rev_db\.}
+ or croak "map_path: $db_path does not contain '/.rev_map.' !";
+ $db_path;
+}
+
+# the new replacement for .rev_db
+sub map_path {
my ($self, $uuid) = @_;
$uuid ||= $self->ra_uuid;
- "$self->{db_root}.$uuid";
+ "$self->{map_root}.$uuid";
}
sub uri_encode {
sub add_directory {
my ($self, $path, $cp_path, $cp_rev) = @_;
+ my $gpath = $self->git_path($path);
+ if ($gpath eq '') {
+ my ($ls, $ctx) = command_output_pipe(qw/ls-tree
+ -r --name-only -z/,
+ $self->{c});
+ local $/ = "\0";
+ while (<$ls>) {
+ chomp;
+ $self->{gii}->remove($_);
+ print "\tD\t$_\n" unless $::_q;
+ }
+ command_close_pipe($ls, $ctx);
+ $self->{empty}->{$path} = 0;
+ }
my ($dir, $file) = ($path =~ m#^(.*?)/?([^/]+)$#);
delete $self->{empty}->{$dir};
$self->{empty}->{$path} = 1;
if (defined $exp) {
seek $base, 0, 0 or croak $!;
- my $got = Git::SVN::Util::md5sum($base);
+ my $got = ::md5sum($base);
die "Checksum mismatch: $fb->{path} $fb->{blob}\n",
"expected: $exp\n",
" got: $got\n" if ($got ne $exp);
if (my $fh = $fb->{fh}) {
if (defined $exp) {
seek($fh, 0, 0) or croak $!;
- my $got = Git::SVN::Util::md5sum($fh);
+ my $got = ::md5sum($fh);
if ($got ne $exp) {
die "Checksum mismatch: $path\n",
"expected: $exp\n got: $got\n";
}
sysseek($fh, 0, 0) or croak $!;
if ($fb->{mode_b} == 120000) {
- sysread($fh, my $buf, 5) == 5 or croak $!;
- $buf eq 'link ' or die "$path has mode 120000",
- "but is not a link\n";
+ eval {
+ sysread($fh, my $buf, 5) == 5 or croak $!;
+ $buf eq 'link ' or die "$path has mode 120000",
+ " but is not a link";
+ };
+ if ($@) {
+ warn "$@\n";
+ sysseek($fh, 0, 0) or croak $!;
+ }
}
defined(my $pid = open my $out,'-|') or die "Can't fork: $!\n";
if (!$pid) {
$fh->flush == 0 or croak $!;
seek $fh, 0, 0 or croak $!;
- my $exp = Git::SVN::Util::md5sum($fh);
+ my $exp = ::md5sum($fh);
seek $fh, 0, 0 or croak $!;
my $pool = SVN::Pool->new;
foreach my $gs ($self->match_globs(\%exists, $paths,
$globs, $r)) {
- if ($gs->rev_db_max >= $r) {
+ if ($gs->rev_map_max >= $r) {
next;
}
next unless $gs->match_paths($paths, $r);
if ($log_entry) {
$gs->do_git_commit($log_entry);
}
+ $INDEX_FILES{$gs->{index}} = 1;
}
foreach my $g (@$globs) {
my $k = "svn-remote.$g->{remote}." .
# pre-fill the .rev_db since it'll eventually get filled in
# with '0' x40 if something new gets committed
foreach my $gs (@$gsv) {
- next if defined $gs->rev_db_get($max);
- $gs->rev_db_set($max, 0 x40);
+ next if $gs->rev_map_max >= $max;
+ next if defined $gs->rev_map_get($max);
+ $gs->rev_map_set($max, 0 x40);
}
foreach my $g (@$globs) {
my $k = "svn-remote.$g->{remote}.$g->{t}-maxRev";
$max += $inc;
$max = $head if ($max > $head);
}
+ Git::SVN::gc();
}
sub match_globs {
warn "W: Ignoring error from SVN, path probably ",
"does not exist: ($errno): ",
$err->expanded_message,"\n";
+ warn "W: Do not be alarmed at the above message ",
+ "git-svn is just searching aggressively for ",
+ "old history.\n",
+ "This may take a while on large repositories\n";
$ignored_err{$err_key} = 1;
}
return;
}
sub log_use_color {
- return 1 if $color;
- my ($dc, $dcvar);
- $dcvar = 'color.diff';
- $dc = `git-config --get $dcvar`;
- if ($dc eq '') {
- # nothing at all; fallback to "diff.color"
- $dcvar = 'diff.color';
- $dc = `git-config --get $dcvar`;
- }
- chomp($dc);
- if ($dc eq 'auto') {
- my $pc;
- $pc = `git-config --get color.pager`;
- if ($pc eq '') {
- # does not have it -- fallback to pager.color
- $pc = `git-config --bool --get pager.color`;
- }
- else {
- $pc = `git-config --bool --get color.pager`;
- if ($?) {
- $pc = 'false';
- }
- }
- chomp($pc);
- if (-t *STDOUT || (defined $pager && $pc eq 'true')) {
- return ($ENV{TERM} && $ENV{TERM} ne 'dumb');
- }
- return 0;
- }
- return 0 if $dc eq 'never';
- return 1 if $dc eq 'always';
- chomp($dc = `git-config --bool --get $dcvar`);
- return ($dc eq 'true');
+ return $color || Git->repository->get_colorbool('color.diff');
}
sub git_svn_log_cmd {
push @cmd, @log_opts;
if (defined $r_max && $r_max == $r_min) {
push @cmd, '--max-count=1';
- if (my $c = $gs->rev_db_get($r_max)) {
+ if (my $c = $gs->rev_map_get($r_max)) {
push @cmd, $c;
}
} elsif (defined $r_max) {
} elsif (length $pager == 0 || $pager eq 'cat') {
$pager = undef;
}
+ $ENV{GIT_PAGER_IN_USE} = defined($pager);
}
sub run_pager {
print commit_log_separator unless $incremental || $oneline;
}
+sub cmd_blame {
+ my $path = shift;
+
+ config_pager();
+ run_pager();
+
+ my ($fh, $ctx) = command_output_pipe('blame', @_, $path);
+ while (my $line = <$fh>) {
+ if ($line =~ /^\^?([[:xdigit:]]+)\s/) {
+ my (undef, $rev, undef) = ::cmt_metadata($1);
+ $rev = sprintf('%-10s', $rev);
+ $line =~ s/^\^?[[:xdigit:]]+(\s)/$rev$1/;
+ }
+ print $line;
+ }
+ command_close_pipe($fh, $ctx);
+}
+
package Git::SVN::Migration;
# these version numbers do NOT correspond to actual version numbers
# of git nor git-svn. They are just relative.
# --use-separate-remotes option in git-clone (now default)
# - we do not automatically migrate to this (following
# the example set by core git)
+#
+# v5 layout: .rev_db.$UUID => .rev_map.$UUID
+# - newer, more-efficient format that uses 24-bytes per record
+# with no filler space.
+# - use xxd -c24 < .rev_map.$UUID to view and debug
+# - This is a one-way migration, repositories updated to the
+# new format will not be able to use old git-svn without
+# rebuilding the .rev_db. Rebuilding the rev_db is not
+# possible if noMetadata or useSvmProps are set; but should
+# be no problem for users that use the (sensible) defaults.
use strict;
use warnings;
use Carp qw/croak/;