mirror of
https://github.com/git/git
synced 2024-08-24 18:26:02 +00:00
Add git-annotate, a tool for assigning blame.
Signed-off-by: Ryan Anderson <ryan@michonline.com> Signed-off-by: Junio C Hamano <junkio@cox.net>
This commit is contained in:
parent
551ce28fe1
commit
c65e898754
1
Makefile
1
Makefile
|
@ -119,6 +119,7 @@ SCRIPT_SH = \
|
|||
SCRIPT_PERL = \
|
||||
git-archimport.perl git-cvsimport.perl git-relink.perl \
|
||||
git-shortlog.perl git-fmt-merge-msg.perl git-rerere.perl \
|
||||
git-annotate.perl \
|
||||
git-svnimport.perl git-mv.perl git-cvsexportcommit.perl
|
||||
|
||||
SCRIPT_PYTHON = \
|
||||
|
|
321
git-annotate.perl
Executable file
321
git-annotate.perl
Executable file
|
@ -0,0 +1,321 @@
|
|||
#!/usr/bin/perl
|
||||
# Copyright 2006, Ryan Anderson <ryan@michonline.com>
|
||||
#
|
||||
# GPL v2 (See COPYING)
|
||||
#
|
||||
# This file is licensed under the GPL v2, or a later version
|
||||
# at the discretion of Linus Torvalds.
|
||||
|
||||
use warnings;
|
||||
use strict;
|
||||
|
||||
my $filename = shift @ARGV;
|
||||
|
||||
|
||||
my @stack = (
|
||||
{
|
||||
'rev' => "HEAD",
|
||||
'filename' => $filename,
|
||||
},
|
||||
);
|
||||
|
||||
our (@lineoffsets, @pendinglineoffsets);
|
||||
our @filelines = ();
|
||||
open(F,"<",$filename)
|
||||
or die "Failed to open filename: $!";
|
||||
|
||||
while(<F>) {
|
||||
chomp;
|
||||
push @filelines, $_;
|
||||
}
|
||||
close(F);
|
||||
our $leftover_lines = @filelines;
|
||||
our %revs;
|
||||
our @revqueue;
|
||||
our $head;
|
||||
|
||||
my $revsprocessed = 0;
|
||||
while (my $bound = pop @stack) {
|
||||
my @revisions = git_rev_list($bound->{'rev'}, $bound->{'filename'});
|
||||
foreach my $revinst (@revisions) {
|
||||
my ($rev, @parents) = @$revinst;
|
||||
$head ||= $rev;
|
||||
|
||||
$revs{$rev}{'filename'} = $bound->{'filename'};
|
||||
if (scalar @parents > 0) {
|
||||
$revs{$rev}{'parents'} = \@parents;
|
||||
next;
|
||||
}
|
||||
|
||||
my $newbound = find_parent_renames($rev, $bound->{'filename'});
|
||||
if ( exists $newbound->{'filename'} && $newbound->{'filename'} ne $bound->{'filename'}) {
|
||||
push @stack, $newbound;
|
||||
$revs{$rev}{'parents'} = [$newbound->{'rev'}];
|
||||
}
|
||||
}
|
||||
}
|
||||
push @revqueue, $head;
|
||||
init_claim($head);
|
||||
$revs{$head}{'lineoffsets'} = {};
|
||||
handle_rev();
|
||||
|
||||
|
||||
my $i = 0;
|
||||
foreach my $l (@filelines) {
|
||||
my ($output, $rev, $committer, $date);
|
||||
if (ref $l eq 'ARRAY') {
|
||||
($output, $rev, $committer, $date) = @$l;
|
||||
if (length($rev) > 8) {
|
||||
$rev = substr($rev,0,8);
|
||||
}
|
||||
} else {
|
||||
$output = $l;
|
||||
($rev, $committer, $date) = ('unknown', 'unknown', 'unknown');
|
||||
}
|
||||
|
||||
printf("(%8s %10s %10s %d)%s\n", $rev, $committer, $date, $i++, $output);
|
||||
}
|
||||
|
||||
sub init_claim {
|
||||
my ($rev) = @_;
|
||||
my %revinfo = git_commit_info($rev);
|
||||
for (my $i = 0; $i < @filelines; $i++) {
|
||||
$filelines[$i] = [ $filelines[$i], '', '', '', 1];
|
||||
# line,
|
||||
# rev,
|
||||
# author,
|
||||
# date,
|
||||
# 1 <-- belongs to the original file.
|
||||
}
|
||||
$revs{$rev}{'lines'} = \@filelines;
|
||||
}
|
||||
|
||||
|
||||
sub handle_rev {
|
||||
my $i = 0;
|
||||
while (my $rev = shift @revqueue) {
|
||||
|
||||
my %revinfo = git_commit_info($rev);
|
||||
|
||||
foreach my $p (@{$revs{$rev}{'parents'}}) {
|
||||
|
||||
git_diff_parse($p, $rev, %revinfo);
|
||||
push @revqueue, $p;
|
||||
}
|
||||
|
||||
|
||||
if (scalar @{$revs{$rev}{parents}} == 0) {
|
||||
# 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 '') {
|
||||
claim_line($i, $rev, $revs{$rev}{lines}, %revinfo);
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
|
||||
sub git_rev_list {
|
||||
my ($rev, $file) = @_;
|
||||
|
||||
open(P,"-|","git-rev-list","--parents","--remove-empty",$rev,"--",$file)
|
||||
or die "Failed to exec git-rev-list: $!";
|
||||
|
||||
my @revs;
|
||||
while(my $line = <P>) {
|
||||
chomp $line;
|
||||
my ($rev, @parents) = split /\s+/, $line;
|
||||
push @revs, [ $rev, @parents ];
|
||||
}
|
||||
close(P);
|
||||
|
||||
printf("0 revs found for rev %s (%s)\n", $rev, $file) if (@revs == 0);
|
||||
return @revs;
|
||||
}
|
||||
|
||||
sub find_parent_renames {
|
||||
my ($rev, $file) = @_;
|
||||
|
||||
open(P,"-|","git-diff-tree", "-M50", "-r","--name-status", "-z","$rev")
|
||||
or die "Failed to exec git-diff: $!";
|
||||
|
||||
local $/ = "\0";
|
||||
my %bound;
|
||||
my $junk = <P>;
|
||||
while (my $change = <P>) {
|
||||
chomp $change;
|
||||
my $filename = <P>;
|
||||
chomp $filename;
|
||||
|
||||
if ($change =~ m/^[AMD]$/ ) {
|
||||
next;
|
||||
} elsif ($change =~ m/^R/ ) {
|
||||
my $oldfilename = $filename;
|
||||
$filename = <P>;
|
||||
chomp $filename;
|
||||
if ( $file eq $filename ) {
|
||||
my $parent = git_find_parent($rev, $oldfilename);
|
||||
@bound{'rev','filename'} = ($parent, $oldfilename);
|
||||
last;
|
||||
}
|
||||
}
|
||||
}
|
||||
close(P);
|
||||
|
||||
return \%bound;
|
||||
}
|
||||
|
||||
|
||||
sub git_find_parent {
|
||||
my ($rev, $filename) = @_;
|
||||
|
||||
open(REVPARENT,"-|","git-rev-list","--remove-empty", "--parents","--max-count=1","$rev","--",$filename)
|
||||
or die "Failed to open git-rev-list to find a single parent: $!";
|
||||
|
||||
my $parentline = <REVPARENT>;
|
||||
chomp $parentline;
|
||||
my ($revfound,$parent) = split m/\s+/, $parentline;
|
||||
|
||||
close(REVPARENT);
|
||||
|
||||
return $parent;
|
||||
}
|
||||
|
||||
|
||||
# Get a diff between the current revision and a parent.
|
||||
# Record the commit information that results.
|
||||
sub git_diff_parse {
|
||||
my ($parent, $rev, %revinfo) = @_;
|
||||
|
||||
my ($ri, $pi) = (0,0);
|
||||
open(DIFF,"-|","git-diff-tree","-M","-p",$rev,$parent,"--",
|
||||
$revs{$rev}{'filename'}, $revs{$parent}{'filename'})
|
||||
or die "Failed to call git-diff for annotation: $!";
|
||||
|
||||
my $slines = $revs{$rev}{'lines'};
|
||||
my @plines;
|
||||
|
||||
my $gotheader = 0;
|
||||
my ($remstart, $remlength, $addstart, $addlength);
|
||||
my ($hunk_start, $hunk_index, $hunk_adds);
|
||||
while(<DIFF>) {
|
||||
chomp;
|
||||
if (m/^@@ -(\d+),(\d+) \+(\d+),(\d+)/) {
|
||||
($remstart, $remlength, $addstart, $addlength) = ($1, $2, $3, $4);
|
||||
# Adjust for 0-based arrays
|
||||
$remstart--;
|
||||
$addstart--;
|
||||
# Reinit hunk tracking.
|
||||
$hunk_start = $remstart;
|
||||
$hunk_index = 0;
|
||||
$gotheader = 1;
|
||||
|
||||
for (my $i = $ri; $i < $remstart; $i++) {
|
||||
$plines[$pi++] = $slines->[$i];
|
||||
$ri++;
|
||||
}
|
||||
next;
|
||||
} elsif (!$gotheader) {
|
||||
next;
|
||||
}
|
||||
|
||||
if (m/^\+(.*)$/) {
|
||||
my $line = $1;
|
||||
$plines[$pi++] = [ $line, '', '', '', 0 ];
|
||||
next;
|
||||
|
||||
} elsif (m/^-(.*)$/) {
|
||||
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);
|
||||
}
|
||||
$ri++;
|
||||
|
||||
} else {
|
||||
if (substr($_,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);
|
||||
}
|
||||
$plines[$pi++] = $slines->[$ri++];
|
||||
}
|
||||
$hunk_index++;
|
||||
}
|
||||
close(DIFF);
|
||||
for (my $i = $ri; $i < @{$slines} ; $i++) {
|
||||
push @plines, $slines->[$ri++];
|
||||
}
|
||||
|
||||
$revs{$parent}{lines} = \@plines;
|
||||
return;
|
||||
}
|
||||
|
||||
sub get_line {
|
||||
my ($lines, $index) = @_;
|
||||
|
||||
return ref $lines->[$index] ne '' ? $lines->[$index][0] : $lines->[$index];
|
||||
}
|
||||
|
||||
sub git_cat_file {
|
||||
my ($parent, $filename) = @_;
|
||||
return () unless defined $parent && defined $filename;
|
||||
my $blobline = `git-ls-tree $parent $filename`;
|
||||
my ($mode, $type, $blob, $tfilename) = split(/\s+/, $blobline, 4);
|
||||
|
||||
open(C,"-|","git-cat-file", "blob", $blob)
|
||||
or die "Failed to git-cat-file blob $blob (rev $parent, file $filename): " . $!;
|
||||
|
||||
my @lines;
|
||||
while(<C>) {
|
||||
chomp;
|
||||
push @lines, $_;
|
||||
}
|
||||
close(C);
|
||||
|
||||
return @lines;
|
||||
}
|
||||
|
||||
|
||||
sub claim_line {
|
||||
my ($floffset, $rev, $lines, %revinfo) = @_;
|
||||
my $oline = get_line($lines, $floffset);
|
||||
@{$lines->[$floffset]} = ( $oline, $rev,
|
||||
$revinfo{'author'}, $revinfo{'author_date'} );
|
||||
#printf("Claiming line %d with rev %s: '%s'\n",
|
||||
# $floffset, $rev, $oline) if 1;
|
||||
}
|
||||
|
||||
sub git_commit_info {
|
||||
my ($rev) = @_;
|
||||
open(COMMIT, "-|","git-cat-file", "commit", $rev)
|
||||
or die "Failed to call git-cat-file: $!";
|
||||
|
||||
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;
|
||||
}
|
||||
}
|
||||
close(COMMIT);
|
||||
|
||||
return %info;
|
||||
}
|
Loading…
Reference in a new issue