package Git::SVN::Log;
use strict;
use warnings;
use Git::SVN::Utils qw(fatal);
use Git qw(command
command_oneline
command_output_pipe
command_close_pipe
get_tz_offset);
use POSIX qw/strftime/;
use constant commit_log_separator => ('-' x 72) . "\n";
use vars qw/$TZ $limit $color $pager $non_recursive $verbose $oneline
%rusers $show_commit $incremental/;
# Option set in git-svn
our $_git_format;
sub cmt_showable {
my ($c) = @_;
return 1 if defined $c->{r};
# big commit message got truncated by the 16k pretty buffer in rev-list
if ($c->{l} && $c->{l}->[-1] eq "...\n" &&
$c->{a_raw} =~ /\@([a-f\d\-]+)>$/) {
@{$c->{l}} = ();
my @log = command(qw/cat-file commit/, $c->{c});
# shift off the headers
shift @log while ($log[0] ne '');
shift @log;
# TODO: make $c->{l} not have a trailing newline in the future
@{$c->{l}} = map { "$_\n" } grep !/^git-svn-id: /, @log;
(undef, $c->{r}, undef) = ::extract_metadata(
(grep(/^git-svn-id: /, @log))[-1]);
}
return defined $c->{r};
}
sub log_use_color {
return $color || Git->repository->get_colorbool('color.diff');
}
sub git_svn_log_cmd {
my ($r_min, $r_max, @args) = @_;
my $head = 'HEAD';
my (@files, @log_opts);
foreach my $x (@args) {
if ($x eq '--' || @files) {
push @files, $x;
} else {
if (::verify_ref("$x^0")) {
$head = $x;
} else {
push @log_opts, $x;
}
}
}
my ($url, $rev, $uuid, $gs) = ::working_head_info($head);
require Git::SVN;
$gs ||= Git::SVN->_new;
my @cmd = (qw/log --abbrev-commit --pretty=raw --default/,
$gs->refname);
push @cmd, '-r' unless $non_recursive;
push @cmd, qw/--raw --name-status/ if $verbose;
push @cmd, '--color' if log_use_color();
push @cmd, @log_opts;
if (defined $r_max && $r_max == $r_min) {
push @cmd, '--max-count=1';
if (my $c = $gs->rev_map_get($r_max)) {
push @cmd, $c;
}
} elsif (defined $r_max) {
if ($r_max < $r_min) {
($r_min, $r_max) = ($r_max, $r_min);
}
my (undef, $c_max) = $gs->find_rev_before($r_max, 1, $r_min);
my (undef, $c_min) = $gs->find_rev_after($r_min, 1, $r_max);
# If there are no commits in the range, both $c_max and $c_min
# will be undefined. If there is at least 1 commit in the
# range, both will be defined.
return () if !defined $c_min || !defined $c_max;
if ($c_min eq $c_max) {
push @cmd, '--max-count=1', $c_min;
} else {
push @cmd, '--boundary', "$c_min..$c_max";
}
}
return (@cmd, @files);
}
# adapted from pager.c
sub config_pager {
if (! -t *STDOUT) {
$ENV{GIT_PAGER_IN_USE} = 'false';
$pager = undef;
return;
}
chomp($pager = command_oneline(qw(var GIT_PAGER)));
if ($pager eq 'cat') {
$pager = undef;
}
$ENV{GIT_PAGER_IN_USE} = defined($pager);
}
sub run_pager {
return unless defined $pager;
pipe my ($rfd, $wfd) or return;
defined(my $pid = fork) or fatal "Can't fork: $!";
if (!$pid) {
open STDOUT, '>&', $wfd or
fatal "Can't redirect to stdout: $!";
return;
}
open STDIN, '<&', $rfd or fatal "Can't redirect stdin: $!";
$ENV{LESS} ||= 'FRX';
$ENV{LV} ||= '-c';
exec $pager or fatal "Can't run pager: $! ($pager)";
}
sub format_svn_date {
my $t = shift || time;
require Git::SVN;
my $gmoff = get_tz_offset($t);
return strftime("%Y-%m-%d %H:%M:%S $gmoff (%a, %d %b %Y)", localtime($t));
}
sub parse_git_date {
my ($t, $tz) = @_;
# Date::Parse isn't in the standard Perl distro :(
if ($tz =~ s/^\+//) {
$t += tz_to_s_offset($tz);
} elsif ($tz =~ s/^\-//) {
$t -= tz_to_s_offset($tz);
}
return $t;
}
sub set_local_timezone {
if (defined $TZ) {
$ENV{TZ} = $TZ;
} else {
delete $ENV{TZ};
}
}
sub tz_to_s_offset {
my ($tz) = @_;
$tz =~ s/(\d\d)$//;
return ($1 * 60) + ($tz * 3600);
}
sub get_author_info {
my ($dest, $author, $t, $tz) = @_;
$author =~ s/(?:^\s*|\s*$)//g;
$dest->{a_raw} = $author;
my $au;
if ($::_authors) {
$au = $rusers{$author} || undef;
}
if (!$au) {
($au) = ($author =~ /<([^>]+)\@[^>]+>$/);
}
$dest->{t} = $t;
$dest->{tz} = $tz;
$dest->{a} = $au;
$dest->{t_utc} = parse_git_date($t, $tz);
}
sub process_commit {
my ($c, $r_min, $r_max, $defer) = @_;
if (defined $r_min && defined $r_max) {
if ($r_min == $c->{r} && $r_min == $r_max) {
show_commit($c);
return 0;
}
return 1 if $r_min == $r_max;
if ($r_min < $r_max) {
# we need to reverse the print order
return 0 if (defined $limit && --$limit < 0);
push @$defer, $c;
return 1;
}
if ($r_min != $r_max) {
return 1 if ($r_min < $c->{r});
return 1 if ($r_max > $c->{r});
}
}
return 0 if (defined $limit && --$limit < 0);
show_commit($c);
return 1;
}
my $l_fmt;
sub show_commit {
my $c = shift;
if ($oneline) {
my $x = "\n";
if (my $l = $c->{l}) {
while ($l->[0] =~ /^\s*$/) { shift @$l }
$x = $l->[0];
}
$l_fmt ||= 'A' . length($c->{r});
print 'r',pack($l_fmt, $c->{r}),' | ';
print "$c->{c} | " if $show_commit;
print $x;
} else {
show_commit_normal($c);
}
}
sub show_commit_changed_paths {
my ($c) = @_;
return unless $c->{changed};
print "Changed paths:\n", @{$c->{changed}};
}
sub show_commit_normal {
my ($c) = @_;
print commit_log_separator, "r$c->{r} | ";
print "$c->{c} | " if $show_commit;
print "$c->{a} | ", format_svn_date($c->{t_utc}), ' | ';
my $nr_line = 0;
if (my $l = $c->{l}) {
while ($l->[$#$l] eq "\n" && $#$l > 0
&& $l->[($#$l - 1)] eq "\n") {
pop @$l;
}
$nr_line = scalar @$l;
if (!$nr_line) {
print "1 line\n\n\n";
} else {
if ($nr_line == 1) {
$nr_line = '1 line';
} else {
$nr_line .= ' lines';
}
print $nr_line, "\n";
show_commit_changed_paths($c);
print "\n";
print $_ foreach @$l;
}
} else {
print "1 line\n";
show_commit_changed_paths($c);
print "\n";
}
foreach my $x (qw/raw stat diff/) {
if ($c->{$x}) {
print "\n";
print $_ foreach @{$c->{$x}}
}
}
}
sub cmd_show_log {
my (@args) = @_;
my ($r_min, $r_max);
my $r_last = -1; # prevent dupes
set_local_timezone();
if (defined $::_revision) {
if ($::_revision =~ /^(\d+):(\d+)$/) {
($r_min, $r_max) = ($1, $2);
} elsif ($::_revision =~ /^\d+$/) {
$r_min = $r_max = $::_revision;
} else {
fatal "-r$::_revision is not supported, use ",
"standard 'git log' arguments instead";
}
}
config_pager();
@args = git_svn_log_cmd($r_min, $r_max, @args);
if (!@args) {
print commit_log_separator unless $incremental || $oneline;
return;
}
my $log = command_output_pipe(@args);
run_pager();
my (@k, $c, $d, $stat);
my $esc_color = qr/(?:\033\[(?:(?:\d+;)*\d*)?m)*/;
while (<$log>) {
if (/^${esc_color}commit (?:- )?($::sha1_short)/o) {
my $cmt = $1;
if ($c && cmt_showable($c) && $c->{r} != $r_last) {
$r_last = $c->{r};
process_commit($c, $r_min, $r_max, \@k) or
goto out;
}
$d = undef;
$c = { c => $cmt };
} elsif (/^${esc_color}author (.+) (\d+) ([\-\+]?\d+)$/o) {
get_author_info($c, $1, $2, $3);
} elsif (/^${esc_color}(?:tree|parent|committer) /o) {
# ignore
} elsif (/^${esc_color}:\d{6} \d{6} $::sha1_short/o) {
push @{$c->{raw}}, $_;
} elsif (/^${esc_color}[ACRMDT]\t/) {
# we could add $SVN->{svn_path} here, but that requires
# remote access at the moment (repo_path_split)...
s#^(${esc_color})([ACRMDT])\t#$1 $2 #o;
push @{$c->{changed}}, $_;
} elsif (/^${esc_color}diff /o) {
$d = 1;
push @{$c->{diff}}, $_;
} elsif ($d) {
push @{$c->{diff}}, $_;
} elsif (/^\ .+\ \|\s*\d+\ $esc_color[\+\-]*
$esc_color*[\+\-]*$esc_color$/x) {
$stat = 1;
push @{$c->{stat}}, $_;
} elsif ($stat && /^ \d+ files changed, \d+ insertions/) {
push @{$c->{stat}}, $_;
$stat = undef;
} elsif (/^${esc_color} (git-svn-id:.+)$/o) {
($c->{url}, $c->{r}, undef) = ::extract_metadata($1);
} elsif (s/^${esc_color} //o) {
push @{$c->{l}}, $_;
}
}
if ($c && defined $c->{r} && $c->{r} != $r_last) {
$r_last = $c->{r};
process_commit($c, $r_min, $r_max, \@k);
}
if (@k) {
($r_min, $r_max) = ($r_max, $r_min);
process_commit($_, $r_min, $r_max) foreach reverse @k;
}
out:
close $log;
print commit_log_separator unless $incremental || $oneline;
}
sub cmd_blame {
my $path = pop;
config_pager();
run_pager();
my ($fh, $ctx, $rev);
if ($_git_format) {
($fh, $ctx) = command_output_pipe('blame', @_, $path);
while (my $line = <$fh>) {
if ($line =~ /^\^?([[:xdigit:]]+)\s/) {
# Uncommitted edits show up as a rev ID of
# all zeros, which we can't look up with
# cmt_metadata
if ($1 !~ /^0+$/) {
(undef, $rev, undef) =
::cmt_metadata($1);
$rev = '0' if (!$rev);
} else {
$rev = '0';
}
$rev = sprintf('%-10s', $rev);
$line =~ s/^\^?[[:xdigit:]]+(\s)/$rev$1/;
}
print $line;
}
} else {
($fh, $ctx) = command_output_pipe('blame', '-p', @_, 'HEAD',
'--', $path);
my ($sha1);
my %authors;
my @buffer;
my %dsha; #distinct sha keys
while (my $line = <$fh>) {
push @buffer, $line;
if ($line =~ /^([[:xdigit:]]{40})\s\d+\s\d+/) {
$dsha{$1} = 1;
}
}
my $s2r = ::cmt_sha2rev_batch([keys %dsha]);
foreach my $line (@buffer) {
if ($line =~ /^([[:xdigit:]]{40})\s\d+\s\d+/) {
$rev = $s2r->{$1};
$rev = '0' if (!$rev)
}
elsif ($line =~ /^author (.*)/) {
$authors{$rev} = $1;
$authors{$rev} =~ s/\s/_/g;
}
elsif ($line =~ /^\t(.*)$/) {
printf("%6s %10s %s\n", $rev, $authors{$rev}, $1);
}
}
}
command_close_pipe($fh, $ctx);
}
1;
