322 lines
7.0 KiB
Plaintext
322 lines
7.0 KiB
Plaintext
|
#!/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;
|
||
|
|
}
|