use strict;
use Getopt::Long;
use POSIX qw(strftime gmtime);
+use File::Basename qw(basename dirname);
+use Git;
sub usage() {
- print STDERR 'Usage: ${\basename $0} [-s] [-S revs-file] file [ revision ]
+ print STDERR "Usage: ${\basename $0} [-s] [-S revs-file] file [ revision ]
-l, --long
Show long rev (Defaults off)
-t, --time
-r, --rename
Follow renames (Defaults on).
-S, --rev-file revs-file
- use revs from revs-file instead of calling git-rev-list
+ Use revs from revs-file instead of calling git-rev-list
-h, --help
This message.
-';
+";
exit(1);
}
-our ($help, $longrev, $rename, $rawtime, $starting_rev, $rev_file) = (0, 0, 1);
+our ($help, $longrev, $rename, $rawtime, $starting_rev, $rev_file, $repo) = (0, 0, 1);
my $rc = GetOptions( "long|l" => \$longrev,
"time|t" => \$rawtime,
"help|h" => \$help,
"rename|r" => \$rename,
"rev-file|S=s" => \$rev_file);
-if (!$rc or $help) {
+if (!$rc or $help or !@ARGV) {
usage();
}
},
);
+$repo = Git->repository();
+
our @filelines = ();
if (defined $starting_rev) {
}
}
push @revqueue, $head;
-init_claim( defined $starting_rev ? $starting_rev : 'dirty');
+init_claim( defined $starting_rev ? $head : 'dirty');
unless (defined $starting_rev) {
- my $diff = open_pipe("git","diff","-R", "HEAD", "--",$filename)
- or die "Failed to call git diff to check for dirty state: $!";
-
- _git_diff_parse($diff, $head, "dirty", (
- 'author' => gitvar_name("GIT_AUTHOR_IDENT"),
- 'author_date' => sprintf("%s +0000",time()),
- )
- );
- close($diff);
+ my %ident;
+ @ident{'author', 'author_email', 'author_date'} = $repo->ident('author');
+ my $diff = $repo->command_output_pipe('diff', '-R', 'HEAD', '--', $filename);
+ _git_diff_parse($diff, [$head], "dirty", %ident);
+ $repo->command_close_pipe($diff);
}
handle_rev();
sub handle_rev {
- my $i = 0;
+ my $revseen = 0;
my %seen;
while (my $rev = shift @revqueue) {
next if $seen{$rev}++;
my %revinfo = git_commit_info($rev);
- foreach my $p (@{$revs{$rev}{'parents'}}) {
-
- git_diff_parse($p, $rev, %revinfo);
- push @revqueue, $p;
- }
+ if (exists $revs{$rev}{parents} &&
+ scalar @{$revs{$rev}{parents}} != 0) {
+ git_diff_parse($revs{$rev}{'parents'}, $rev, %revinfo);
+ push @revqueue, @{$revs{$rev}{'parents'}};
- if (scalar @{$revs{$rev}{parents}} == 0) {
+ } else {
# We must be at the initial rev here, so claim everything that is left.
for (my $i = 0; $i < @{$revs{$rev}{lines}}; $i++) {
if (ref ${$revs{$rev}{lines}}[$i] eq '' || ${$revs{$rev}{lines}}[$i][1] eq '') {
open($revlist, '<' . $rev_file)
or die "Failed to open $rev_file : $!";
} else {
- $revlist = open_pipe("git-rev-list","--parents","--remove-empty",$rev,"--",$file)
- or die "Failed to exec git-rev-list: $!";
+ $revlist = $repo->command_output_pipe('rev-list', '--parents', '--remove-empty', $rev, '--', $file);
}
my @revs;
my ($rev, @parents) = split /\s+/, $line;
push @revs, [ $rev, @parents ];
}
- close($revlist);
+ $repo->command_close_pipe($revlist);
printf("0 revs found for rev %s (%s)\n", $rev, $file) if (@revs == 0);
return @revs;
sub find_parent_renames {
my ($rev, $file) = @_;
- my $patch = open_pipe("git-diff-tree", "-M50", "-r","--name-status", "-z","$rev")
- or die "Failed to exec git-diff: $!";
+ my $patch = $repo->command_output_pipe('diff-tree', '-M50', '-r', '--name-status', '-z', $rev);
local $/ = "\0";
my %bound;
while (my $change = <$patch>) {
chomp $change;
my $filename = <$patch>;
+ if (!defined $filename) {
+ next;
+ }
chomp $filename;
if ($change =~ m/^[AMD]$/ ) {
}
}
}
- close($patch);
+ $repo->command_close_pipe($patch);
return \%bound;
}
sub git_find_parent {
my ($rev, $filename) = @_;
- my $revparent = open_pipe("git-rev-list","--remove-empty", "--parents","--max-count=1","$rev","--",$filename)
- or die "Failed to open git-rev-list to find a single parent: $!";
+ my $parentline = $repo->command_oneline('rev-list', '--remove-empty',
+ '--parents', '--max-count=1', $rev, '--', $filename);
+ my ($revfound, $parent) = split m/\s+/, $parentline;
+
+ return $parent;
+}
+
+sub git_find_all_parents {
+ my ($rev) = @_;
+
+ my $parentline = $repo->command_oneline("rev-list","--remove-empty", "--parents","--max-count=1","$rev");
+ my ($origrev, @parents) = split m/\s+/, $parentline;
- my $parentline = <$revparent>;
- chomp $parentline;
- my ($revfound,$parent) = split m/\s+/, $parentline;
+ return @parents;
+}
- close($revparent);
+sub git_merge_base {
+ my ($rev1, $rev2) = @_;
- return $parent;
+ my $base = $repo->command_oneline("merge-base", $rev1, $rev2);
+ return $base;
+}
+
+# Construct a set of pseudo parents that are in the same order,
+# and the same quantity as the real parents,
+# but whose SHA1s are as similar to the logical parents
+# as possible.
+sub get_pseudo_parents {
+ my ($all, $fake) = @_;
+
+ my @all = @$all;
+ my @fake = @$fake;
+
+ my @pseudo;
+
+ my %fake = map {$_ => 1} @fake;
+ my %seenfake;
+
+ my $fakeidx = 0;
+ foreach my $p (@all) {
+ if (exists $fake{$p}) {
+ if ($fake[$fakeidx] ne $p) {
+ die sprintf("parent mismatch: %s != %s\nall:%s\nfake:%s\n",
+ $fake[$fakeidx], $p,
+ join(", ", @all),
+ join(", ", @fake),
+ );
+ }
+
+ push @pseudo, $p;
+ $fakeidx++;
+ $seenfake{$p}++;
+
+ } else {
+ my $base = git_merge_base($fake[$fakeidx], $p);
+ if ($base ne $fake[$fakeidx]) {
+ die sprintf("Result of merge-base doesn't match fake: %s,%s != %s\n",
+ $fake[$fakeidx], $p, $base);
+ }
+
+ # The details of how we parse the diffs
+ # mean that we cannot have a duplicate
+ # revision in the list, so if we've already
+ # seen the revision we would normally add, just use
+ # the actual revision.
+ if ($seenfake{$base}) {
+ push @pseudo, $p;
+ } else {
+ push @pseudo, $base;
+ $seenfake{$base}++;
+ }
+ }
+ }
+
+ return @pseudo;
}
# Get a diff between the current revision and a parent.
# Record the commit information that results.
sub git_diff_parse {
- my ($parent, $rev, %revinfo) = @_;
+ my ($parents, $rev, %revinfo) = @_;
- my $diff = open_pipe("git-diff-tree","-M","-p",$rev,$parent,"--",
- $revs{$rev}{'filename'}, $revs{$parent}{'filename'})
- or die "Failed to call git-diff for annotation: $!";
+ my @pseudo_parents;
+ my @command = ("diff-tree");
+ my $revision_spec;
- _git_diff_parse($diff, $parent, $rev, %revinfo);
+ if (scalar @$parents == 1) {
- close($diff);
+ $revision_spec = join("..", $parents->[0], $rev);
+ @pseudo_parents = @$parents;
+ } else {
+ my @all_parents = git_find_all_parents($rev);
+
+ if (@all_parents != @$parents) {
+ @pseudo_parents = get_pseudo_parents(\@all_parents, $parents);
+ } else {
+ @pseudo_parents = @$parents;
+ }
+
+ $revision_spec = $rev;
+ push @command, "-c";
+ }
+
+ my @filenames = ( $revs{$rev}{'filename'} );
+
+ foreach my $parent (@$parents) {
+ push @filenames, $revs{$parent}{'filename'};
+ }
+
+ push @command, "-p", "-M", $revision_spec, "--", @filenames;
+
+
+ my $diff = $repo->command_output_pipe(@command);
+
+ _git_diff_parse($diff, \@pseudo_parents, $rev, %revinfo);
+
+ $repo->command_close_pipe($diff);
}
sub _git_diff_parse {
- my ($diff, $parent, $rev, %revinfo) = @_;
+ my ($diff, $parents, $rev, %revinfo) = @_;
+
+ my $ri = 0;
- my ($ri, $pi) = (0,0);
my $slines = $revs{$rev}{'lines'};
- my @plines;
+ my (%plines, %pi);
my $gotheader = 0;
my ($remstart);
- my ($hunk_start, $hunk_index);
+ my $parent_count = @$parents;
+
+ my $diff_header_regexp = "^@";
+ $diff_header_regexp .= "@" x @$parents;
+ $diff_header_regexp .= ' -\d+,\d+' x @$parents;
+ $diff_header_regexp .= ' \+(\d+),\d+';
+ $diff_header_regexp .= " " . ("@" x @$parents);
+
+ my %claim_regexps;
+ my $allparentplus = '^' . '\\+' x @$parents . '(.*)$';
+
+ {
+ my $i = 0;
+ foreach my $parent (@$parents) {
+
+ $pi{$parent} = 0;
+ my $r = '^' . '.' x @$parents . '(.*)$';
+ my $p = $r;
+ substr($p,$i+1, 1) = '\\+';
+
+ my $m = $r;
+ substr($m,$i+1, 1) = '-';
+
+ $claim_regexps{$parent}{plus} = $p;
+ $claim_regexps{$parent}{minus} = $m;
+
+ $plines{$parent} = [];
+
+ $i++;
+ }
+ }
+
+ DIFF:
while(<$diff>) {
chomp;
- if (m/^@@ -(\d+),(\d+) \+(\d+),(\d+)/) {
- $remstart = $1;
- # Adjust for 0-based arrays
- $remstart--;
- # Reinit hunk tracking.
- $hunk_start = $remstart;
- $hunk_index = 0;
+ #printf("%d:%s:\n", $gotheader, $_);
+ if (m/$diff_header_regexp/) {
+ $remstart = $1 - 1;
+ # (0-based arrays)
+
$gotheader = 1;
- for (my $i = $ri; $i < $remstart; $i++) {
- $plines[$pi++] = $slines->[$i];
- $ri++;
+ foreach my $parent (@$parents) {
+ for (my $i = $ri; $i < $remstart; $i++) {
+ $plines{$parent}[$pi{$parent}++] = $slines->[$i];
+ }
}
- next;
- } elsif (!$gotheader) {
- next;
- }
+ $ri = $remstart;
- if (m/^\+(.*)$/) {
- my $line = $1;
- $plines[$pi++] = [ $line, '', '', '', 0 ];
- next;
+ next DIFF;
- } elsif (m/^-(.*)$/) {
- my $line = $1;
- if (get_line($slines, $ri) eq $line) {
- # Found a match, claim
- claim_line($ri, $rev, $slines, %revinfo);
- } else {
- die sprintf("Sync error: %d/%d\n|%s\n|%s\n%s => %s\n",
- $ri, $hunk_start + $hunk_index,
- $line,
- get_line($slines, $ri),
- $rev, $parent);
- }
- $ri++;
+ } elsif (!$gotheader) {
+ # Skip over the leadin.
+ next DIFF;
+ }
- } elsif (m/^\\/) {
+ if (m/^\\/) {
;
# Skip \No newline at end of file.
# But this can be internationalized, so only look
# for an initial \
} else {
- if (substr($_,1) ne get_line($slines,$ri) ) {
- die sprintf("Line %d (%d) does not match:\n|%s\n|%s\n%s => %s\n",
- $hunk_start + $hunk_index, $ri,
- substr($_,1),
- get_line($slines,$ri),
- $rev, $parent);
+ my %claims = ();
+ my $negclaim = 0;
+ my $allclaimed = 0;
+ my $line;
+
+ if (m/$allparentplus/) {
+ claim_line($ri, $rev, $slines, %revinfo);
+ $allclaimed = 1;
+
+ }
+
+ PARENT:
+ foreach my $parent (keys %claim_regexps) {
+ my $m = $claim_regexps{$parent}{minus};
+ my $p = $claim_regexps{$parent}{plus};
+
+ if (m/$m/) {
+ $line = $1;
+ $plines{$parent}[$pi{$parent}++] = [ $line, '', '', '', 0 ];
+ $negclaim++;
+
+ } elsif (m/$p/) {
+ $line = $1;
+ if (get_line($slines, $ri) eq $line) {
+ # Found a match, claim
+ $claims{$parent}++;
+
+ } else {
+ die sprintf("Sync error: %d\n|%s\n|%s\n%s => %s\n",
+ $ri, $line,
+ get_line($slines, $ri),
+ $rev, $parent);
+ }
+ }
+ }
+
+ if (%claims) {
+ foreach my $parent (@$parents) {
+ next if $claims{$parent} || $allclaimed;
+ $plines{$parent}[$pi{$parent}++] = $slines->[$ri];
+ #[ $line, '', '', '', 0 ];
+ }
+ $ri++;
+
+ } elsif ($negclaim) {
+ next DIFF;
+
+ } else {
+ if (substr($_,scalar @$parents) ne get_line($slines,$ri) ) {
+ foreach my $parent (@$parents) {
+ printf("parent %s is on line %d\n", $parent, $pi{$parent});
+ }
+
+ my @context;
+ for (my $i = -2; $i < 2; $i++) {
+ push @context, get_line($slines, $ri + $i);
+ }
+ my $context = join("\n", @context);
+
+ my $justline = substr($_, scalar @$parents);
+ die sprintf("Line %d, does not match:\n|%s|\n|%s|\n%s\n",
+ $ri,
+ $justline,
+ $context);
+ }
+ foreach my $parent (@$parents) {
+ $plines{$parent}[$pi{$parent}++] = $slines->[$ri];
+ }
+ $ri++;
}
- $plines[$pi++] = $slines->[$ri++];
}
- $hunk_index++;
}
+
for (my $i = $ri; $i < @{$slines} ; $i++) {
- push @plines, $slines->[$ri++];
+ foreach my $parent (@$parents) {
+ push @{$plines{$parent}}, $slines->[$ri];
+ }
+ $ri++;
+ }
+
+ foreach my $parent (@$parents) {
+ $revs{$parent}{lines} = $plines{$parent};
}
- $revs{$parent}{lines} = \@plines;
return;
}
return () unless defined $rev && defined $filename;
my $blob = git_ls_tree($rev, $filename);
+ die "Failed to find a blob for $filename in rev $rev\n" if !defined $blob;
- my $catfile = open_pipe("git","cat-file", "blob", $blob)
- or die "Failed to git-cat-file blob $blob (rev $rev, file $filename): " . $!;
-
- my @lines;
- while(<$catfile>) {
- chomp;
- push @lines, $_;
- }
- close($catfile);
-
+ my @lines = split(/\n/, $repo->get_object('blob', $blob));
+ pop @lines unless $lines[$#lines]; # Trailing newline
return @lines;
}
sub git_ls_tree {
my ($rev, $filename) = @_;
- my $lstree = open_pipe("git","ls-tree",$rev,$filename)
- or die "Failed to call git ls-tree: $!";
-
+ my $lstree = $repo->command_output_pipe('ls-tree', $rev, $filename);
my ($mode, $type, $blob, $tfilename);
while(<$lstree>) {
+ chomp;
($mode, $type, $blob, $tfilename) = split(/\s+/, $_, 4);
last if ($tfilename eq $filename);
}
- close($lstree);
+ $repo->command_close_pipe($lstree);
- return $blob if $filename eq $filename;
+ return $blob if ($tfilename eq $filename);
die "git-ls-tree failed to find blob for $filename";
-
}
sub git_commit_info {
my ($rev) = @_;
- my $commit = open_pipe("git-cat-file", "commit", $rev)
- or die "Failed to call git-cat-file: $!";
+ my $commit = $repo->get_object('commit', $rev);
my %info;
- while(<$commit>) {
- chomp;
- last if (length $_ == 0);
-
- if (m/^author (.*) <(.*)> (.*)$/) {
- $info{'author'} = $1;
- $info{'author_email'} = $2;
- $info{'author_date'} = $3;
- } elsif (m/^committer (.*) <(.*)> (.*)$/) {
- $info{'committer'} = $1;
- $info{'committer_email'} = $2;
- $info{'committer_date'} = $3;
+ while ($commit =~ /(.*?)\n/g) {
+ my $line = $1;
+ if ($line =~ s/^author //) {
+ @info{'author', 'author_email', 'author_date'} = $repo->ident($line);
+ } elsif ($line =~ s/^committer//) {
+ @info{'committer', 'committer_email', 'committer_date'} = $repo->ident($line);
}
}
- close($commit);
return %info;
}
return $_[0];
}
my ($timestamp, $timezone) = split(' ', $_[0]);
- return strftime("%Y-%m-%d %H:%M:%S " . $timezone, gmtime($timestamp));
-}
-
-# Copied from git-send-email.perl - We need a Git.pm module..
-sub gitvar {
- my ($var) = @_;
- my $fh;
- my $pid = open($fh, '-|');
- die "$!" unless defined $pid;
- if (!$pid) {
- exec('git-var', $var) or die "$!";
- }
- my ($val) = <$fh>;
- close $fh or die "$!";
- chomp($val);
- return $val;
-}
-
-sub gitvar_name {
- my ($name) = @_;
- my $val = gitvar($name);
- my @field = split(/\s+/, $val);
- return join(' ', @field[0...(@field-4)]);
-}
-
-sub open_pipe {
- if ($^O eq '##INSERT_ACTIVESTATE_STRING_HERE##') {
- return open_pipe_activestate(@_);
- } else {
- return open_pipe_normal(@_);
- }
-}
-
-sub open_pipe_activestate {
- tie *fh, "Git::ActiveStatePipe", @_;
- return *fh;
-}
-
-sub open_pipe_normal {
- my (@execlist) = @_;
-
- my $pid = open my $kid, "-|";
- defined $pid or die "Cannot fork: $!";
-
- unless ($pid) {
- exec @execlist;
- die "Cannot exec @execlist: $!";
+ my $minutes = abs($timezone);
+ $minutes = int($minutes / 100) * 60 + ($minutes % 100);
+ if ($timezone < 0) {
+ $minutes = -$minutes;
}
-
- return $kid;
-}
-
-package Git::ActiveStatePipe;
-use strict;
-
-sub TIEHANDLE {
- my ($class, @params) = @_;
- my $cmdline = join " ", @params;
- my @data = qx{$cmdline};
- bless { i => 0, data => \@data }, $class;
-}
-
-sub READLINE {
- my $self = shift;
- if ($self->{i} >= scalar @{$self->{data}}) {
- return undef;
- }
- return $self->{'data'}->[ $self->{i}++ ];
-}
-
-sub CLOSE {
- my $self = shift;
- delete $self->{data};
- delete $self->{i};
-}
-
-sub EOF {
- my $self = shift;
- return ($self->{i} >= scalar @{$self->{data}});
+ my $t = $timestamp + $minutes * 60;
+ return strftime("%Y-%m-%d %H:%M:%S " . $timezone, gmtime($t));
}