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|
#!/usr/bin/perl
# Convert git log output to ChangeLog format.
my $VERSION = '2009-10-05 15:04'; # UTC
# The definition above must lie within the first 8 lines in order
# for the Emacs time-stamp write hook (at end) to update it.
# If you change this file with Emacs, please let the write hook
# do its job. Otherwise, update this string manually.
# Copyright (C) 2008, 2009 Free Software Foundation, Inc.
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
# You should have received a copy of the GNU General Public License
# along with this program. If not, see <http://www.gnu.org/licenses/>.
# Written by Jim Meyering
use strict;
use warnings;
use Getopt::Long;
use POSIX qw(strftime);
(my $ME = $0) =~ s|.*/||;
# use File::Coda; # http://meyering.net/code/Coda/
END {
defined fileno STDOUT or return;
close STDOUT and return;
warn "$ME: failed to close standard output: $!\n";
$? ||= 1;
}
sub usage ($)
{
my ($exit_code) = @_;
my $STREAM = ($exit_code == 0 ? *STDOUT : *STDERR);
if ($exit_code != 0)
{
print $STREAM "Try `$ME --help' for more information.\n";
}
else
{
print $STREAM <<EOF;
Usage: $ME [OPTIONS] [ARGS]
Convert git log output to ChangeLog format. If present, any ARGS
are passed to "git log". To avoid ARGS being parsed as options to
$ME, they may be preceded by '--'.
OPTIONS:
--since=DATE convert only the logs since DATE;
the default is to convert all log entries.
--format=FMT set format string for commit subject and body;
see 'man git-log' for the list of format metacharacters;
the default is '%s%n%b%n'
--help display this help and exit
--version output version information and exit
EXAMPLE:
$ME --since=2008-01-01 > ChangeLog
$ME -- -n 5 foo > last-5-commits-to-branch-foo
EOF
}
exit $exit_code;
}
# If the string $S is a well-behaved file name, simply return it.
# If it contains white space, quotes, etc., quote it, and return the new string.
sub shell_quote($)
{
my ($s) = @_;
if ($s =~ m![^\w+/.,-]!)
{
# Convert each single quote to '\''
$s =~ s/\'/\'\\\'\'/g;
# Then single quote the string.
$s = "'$s'";
}
return $s;
}
sub quoted_cmd(@)
{
return join (' ', map {shell_quote $_} @_);
}
{
my $since_date = '1970-01-01 UTC';
my $format_string = '%s%n%b%n';
GetOptions
(
help => sub { usage 0 },
version => sub { print "$ME version $VERSION\n"; exit },
'since=s' => \$since_date,
'format=s' => \$format_string,
) or usage 1;
my @cmd = (qw (git log --log-size), "--since=$since_date",
'--pretty=format:%ct %an <%ae>%n%n'.$format_string, @ARGV);
open PIPE, '-|', @cmd
or die ("$ME: failed to run `". quoted_cmd (@cmd) ."': $!\n"
. "(Is your Git too old? Version 1.5.1 or later is required.)\n");
my $prev_date_line = '';
while (1)
{
defined (my $in = <PIPE>)
or last;
$in =~ /^log size (\d+)$/
or die "$ME:$.: Invalid line (expected log size):\n$in";
my $log_nbytes = $1;
my $log;
my $n_read = read PIPE, $log, $log_nbytes;
$n_read == $log_nbytes
or die "$ME:$.: unexpected EOF\n";
my @line = split "\n", $log;
my $author_line = shift @line;
defined $author_line
or die "$ME:$.: unexpected EOF\n";
if ($author_line =~ /^(\d+) (.*>)$/) {
my $date_line = sprintf "%s $2\n", strftime ("%F", localtime ($1));
# If this line would be the same as the previous date/name/email
# line, then arrange not to print it.
if ($date_line ne $prev_date_line)
{
$prev_date_line eq ''
or print "\n";
print $date_line;
}
$prev_date_line = $date_line;
}
# Omit "Signed-off-by..." lines.
@line = grep !/^Signed-off-by: .*>$/, @line;
# If there were any lines
if (@line == 0)
{
warn "$ME: warning: empty commit message:\n $prev_date_line\n";
}
else
{
# Remove leading and trailing blank lines.
while ($line[0] =~ /^\s*$/) { shift @line; }
while ($line[$#line] =~ /^\s*$/) { pop @line; }
# Prefix each non-empty line with a TAB.
@line = map { length $_ ? "\t$_" : '' } @line;
print "\n", join ("\n", @line), "\n";
}
defined ($in = <PIPE>)
or last;
$in ne "\n"
and die "$ME:$.: unexpected line:\n$in";
}
close PIPE
or die "$ME: error closing pipe from " . quoted_cmd (@cmd) . "\n";
# FIXME-someday: include $PROCESS_STATUS in the diagnostic
}
# Local Variables:
# indent-tabs-mode: nil
# eval: (add-hook 'write-file-hooks 'time-stamp)
# time-stamp-start: "my $VERSION = '"
# time-stamp-format: "%:y-%02m-%02d %02H:%02M"
# time-stamp-time-zone: "UTC"
# time-stamp-end: "'; # UTC"
# End:
|
