mirror of
https://github.com/git/git
synced 2024-10-01 06:05:20 +00:00
git-svn: add 'log' command, a facsimile of basic `svn log'
This quick feature should make it easy to look up svn log messages when svn users refer to -r/--revision numbers. The following features from `svn log' are supported: --revision=<n>[:<n>] - is supported, non-numeric args are not: HEAD, NEXT, BASE, PREV, etc ... -v/--verbose - just maps to --raw (in git log), so it's completely incompatible with the --verbose output in svn log --limit=<n> - is NOT the same as --max-count, doesn't count merged/excluded commits --incremental - supported (trivial :P) New features: --show-commit - shows the git commit sha1, as well --oneline - our version of --pretty=oneline Any other arguments are passed directly to `git log' Signed-off-by: Eric Wong <normalperson@yhbt.net>
This commit is contained in:
Eric Wong
parent
7a97de4e19
commit
79bb8d88fc
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@ -15,6 +15,7 @@
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$ENV{GIT_DIR} = $GIT_DIR;
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my $LC_ALL = $ENV{LC_ALL};
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my $TZ = $ENV{TZ};
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# make sure the svn binary gives consistent output between locales and TZs:
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$ENV{TZ} = 'UTC';
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$ENV{LC_ALL} = 'C';
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@ -27,7 +28,7 @@
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use IO::File qw//;
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use File::Basename qw/dirname basename/;
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use File::Path qw/mkpath/;
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use Getopt::Long qw/:config gnu_getopt no_ignore_case auto_abbrev/;
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use Getopt::Long qw/:config gnu_getopt no_ignore_case auto_abbrev pass_through/;
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use File::Spec qw//;
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use POSIX qw/strftime/;
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my $sha1 = qr/[a-f\d]{40}/;
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@ -36,8 +37,9 @@
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$_find_copies_harder, $_l, $_cp_similarity,
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$_repack, $_repack_nr, $_repack_flags,
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$_template, $_shared, $_no_default_regex, $_no_graft_copy,
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$_limit, $_verbose, $_incremental, $_oneline, $_l_fmt, $_show_commit,
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$_version, $_upgrade, $_authors, $_branch_all_refs, @_opt_m);
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my (@_branch_from, %tree_map, %users);
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my (@_branch_from, %tree_map, %users, %rusers);
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my ($_svn_co_url_revs, $_svn_pg_peg_revs);
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my @repo_path_split_cache;
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@ -87,6 +89,15 @@
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'multi-fetch' => [ \&multi_fetch,
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'Fetch multiple trees (like git-svnimport)',
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\%fc_opts ],
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'log' => [ \&show_log, 'Show commit logs',
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{ 'limit=i' => \$_limit,
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'revision|r=s' => \$_revision,
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'verbose|v' => \$_verbose,
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'incremental' => \$_incremental,
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'oneline' => \$_oneline,
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'show-commit' => \$_show_commit,
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'authors-file|A=s' => \$_authors,
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} ],
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);
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my $cmd;
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@ -101,9 +112,10 @@
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my %opts = %{$cmd{$cmd}->[2]} if (defined $cmd);
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read_repo_config(\%opts);
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GetOptions(%opts, 'help|H|h' => \$_help,
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'version|V' => \$_version,
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'id|i=s' => \$GIT_SVN) or exit 1;
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my $rv = GetOptions(%opts, 'help|H|h' => \$_help,
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'version|V' => \$_version,
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'id|i=s' => \$GIT_SVN);
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exit 1 if (!$rv && $cmd ne 'log');
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set_default_vals();
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usage(0) if $_help;
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@ -173,18 +185,10 @@ sub rebuild {
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croak "Non-SHA1: $c\n" unless $c =~ /^$sha1$/o;
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my @commit = grep(/^git-svn-id: /,`git-cat-file commit $c`);
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next if (!@commit); # skip merges
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my $id = $commit[$#commit];
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my ($url, $rev, $uuid) = ($id =~ /^git-svn-id:\s(\S+?)\@(\d+)
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\s([a-f\d\-]+)$/x);
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if (!$rev || !$uuid || !$url) {
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# some of the original repositories I made had
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# indentifiers like this:
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($rev, $uuid) = ($id =~/^git-svn-id:\s(\d+)
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\@([a-f\d\-]+)/x);
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if (!$rev || !$uuid) {
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croak "Unable to extract revision or UUID from ",
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"$c, $id\n";
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}
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my ($url, $rev, $uuid) = extract_metadata($commit[$#commit]);
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if (!$rev || !$uuid) {
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croak "Unable to extract revision or UUID from ",
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"$c, $commit[$#commit]\n";
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}
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# if we merged or otherwise started elsewhere, this is
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@ -448,6 +452,81 @@ sub multi_fetch {
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rec_fetch('', "$GIT_DIR/svn", @_);
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}
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sub show_log {
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my (@args) = @_;
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my ($r_min, $r_max);
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my $r_last = -1; # prevent dupes
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rload_authors() if $_authors;
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if (defined $TZ) {
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$ENV{TZ} = $TZ;
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} else {
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delete $ENV{TZ};
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}
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if (defined $_revision) {
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if ($_revision =~ /^(\d+):(\d+)$/) {
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($r_min, $r_max) = ($1, $2);
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} elsif ($_revision =~ /^\d+$/) {
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$r_min = $r_max = $_revision;
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} else {
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print STDERR "-r$_revision is not supported, use ",
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"standard \'git log\' arguments instead\n";
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exit 1;
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}
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}
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my $pid = open(my $log,'-|');
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defined $pid or croak $!;
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if (!$pid) {
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my @rl = (qw/git-log --abbrev-commit --pretty=raw
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--default/, "remotes/$GIT_SVN");
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push @rl, '--raw' if $_verbose;
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exec(@rl, @args) or croak $!;
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}
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setup_pager();
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my (@k, $c, $d);
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while (<$log>) {
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if (/^commit ($sha1_short)/o) {
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my $cmt = $1;
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if ($c && defined $c->{r} && $c->{r} != $r_last) {
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$r_last = $c->{r};
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process_commit($c, $r_min, $r_max, \@k) or
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goto out;
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}
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$d = undef;
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$c = { c => $cmt };
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} elsif (/^author (.+) (\d+) ([\-\+]?\d+)$/) {
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get_author_info($c, $1, $2, $3);
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} elsif (/^(?:tree|parent|committer) /) {
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# ignore
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} elsif (/^:\d{6} \d{6} $sha1_short/o) {
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push @{$c->{raw}}, $_;
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} elsif (/^diff /) {
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$d = 1;
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push @{$c->{diff}}, $_;
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} elsif ($d) {
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push @{$c->{diff}}, $_;
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} elsif (/^ (git-svn-id:.+)$/) {
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my ($url, $rev, $uuid) = extract_metadata($1);
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$c->{r} = $rev;
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} elsif (s/^ //) {
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push @{$c->{l}}, $_;
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}
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}
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if ($c && defined $c->{r} && $c->{r} != $r_last) {
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$r_last = $c->{r};
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process_commit($c, $r_min, $r_max, \@k);
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}
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if (@k) {
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my $swap = $r_max;
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$r_max = $r_min;
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$r_min = $swap;
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process_commit($_, $r_min, $r_max) foreach reverse @k;
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}
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out:
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close $log;
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print '-' x72,"\n" unless $_incremental || $_oneline;
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}
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########################### utility functions #########################
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sub rec_fetch {
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@ -1638,6 +1717,17 @@ sub load_authors {
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close $authors or croak $!;
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}
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sub rload_authors {
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open my $authors, '<', $_authors or die "Can't open $_authors $!\n";
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while (<$authors>) {
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chomp;
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next unless /^(\S+?)\s*=\s*(.+?)\s*<(.+)>\s*$/;
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my ($user, $name, $email) = ($1, $2, $3);
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$rusers{"$name <$email>"} = $user;
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}
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close $authors or croak $!;
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}
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sub svn_propget_base {
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my ($p, $f) = @_;
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$f .= '@BASE' if $_svn_pg_peg_revs;
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@ -1803,6 +1893,142 @@ sub read_url_paths {
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return $l_map;
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}
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sub extract_metadata {
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my $id = shift;
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my ($url, $rev, $uuid) = ($id =~ /^git-svn-id:\s(\S+?)\@(\d+)
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\s([a-f\d\-]+)$/x);
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if (!$rev || !$uuid || !$url) {
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# some of the original repositories I made had
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# indentifiers like this:
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($rev, $uuid) = ($id =~/^git-svn-id:\s(\d+)\@([a-f\d\-]+)/);
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}
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return ($url, $rev, $uuid);
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}
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sub tz_to_s_offset {
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my ($tz) = @_;
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$tz =~ s/(\d\d)$//;
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return ($1 * 60) + ($tz * 3600);
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}
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sub setup_pager { # translated to Perl from pager.c
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return unless (-t *STDOUT);
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my $pager = $ENV{PAGER};
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if (!defined $pager) {
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$pager = 'less';
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} elsif (length $pager == 0 || $pager eq 'cat') {
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return;
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}
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pipe my $rfd, my $wfd or return;
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defined(my $pid = fork) or croak $!;
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if (!$pid) {
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open STDOUT, '>&', $wfd or croak $!;
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return;
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}
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open STDIN, '<&', $rfd or croak $!;
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$ENV{LESS} ||= '-S';
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exec $pager or croak "Can't run pager: $!\n";;
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}
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sub get_author_info {
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my ($dest, $author, $t, $tz) = @_;
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$author =~ s/(?:^\s*|\s*$)//g;
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my $_a;
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if ($_authors) {
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$_a = $rusers{$author} || undef;
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}
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if (!$_a) {
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($_a) = ($author =~ /<([^>]+)\@[^>]+>$/);
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}
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$dest->{t} = $t;
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$dest->{tz} = $tz;
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$dest->{a} = $_a;
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# Date::Parse isn't in the standard Perl distro :(
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if ($tz =~ s/^\+//) {
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$t += tz_to_s_offset($tz);
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} elsif ($tz =~ s/^\-//) {
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$t -= tz_to_s_offset($tz);
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}
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$dest->{t_utc} = $t;
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}
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sub process_commit {
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my ($c, $r_min, $r_max, $defer) = @_;
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if (defined $r_min && defined $r_max) {
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if ($r_min == $c->{r} && $r_min == $r_max) {
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show_commit($c);
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return 0;
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}
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return 1 if $r_min == $r_max;
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if ($r_min < $r_max) {
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# we need to reverse the print order
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return 0 if (defined $_limit && --$_limit < 0);
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push @$defer, $c;
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return 1;
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}
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if ($r_min != $r_max) {
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return 1 if ($r_min < $c->{r});
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return 1 if ($r_max > $c->{r});
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}
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}
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return 0 if (defined $_limit && --$_limit < 0);
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show_commit($c);
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return 1;
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}
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sub show_commit {
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my $c = shift;
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if ($_oneline) {
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my $x = "\n";
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if (my $l = $c->{l}) {
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while ($l->[0] =~ /^\s*$/) { shift @$l }
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$x = $l->[0];
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}
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$_l_fmt ||= 'A' . length($c->{r});
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print 'r',pack($_l_fmt, $c->{r}),' | ';
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print "$c->{c} | " if $_show_commit;
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print $x;
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} else {
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show_commit_normal($c);
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}
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}
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sub show_commit_normal {
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my ($c) = @_;
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print '-' x72, "\nr$c->{r} | ";
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print "$c->{c} | " if $_show_commit;
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print "$c->{a} | ", strftime("%Y-%m-%d %H:%M:%S %z (%a, %d %b %Y)",
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localtime($c->{t_utc})), ' | ';
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my $nr_line = 0;
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if (my $l = $c->{l}) {
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while ($l->[$#$l] eq "\n" && $l->[($#$l - 1)] eq "\n") {
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pop @$l;
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}
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$nr_line = scalar @$l;
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if (!$nr_line) {
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print "1 line\n\n\n";
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} else {
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if ($nr_line == 1) {
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$nr_line = '1 line';
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} else {
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$nr_line .= ' lines';
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}
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print $nr_line, "\n\n";
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print $_ foreach @$l;
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}
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} else {
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print "1 line\n\n";
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}
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foreach my $x (qw/raw diff/) {
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if ($c->{$x}) {
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print "\n";
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print $_ foreach @{$c->{$x}}
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}
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}
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}
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__END__
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Data structures:
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