2 # Convert git log output to ChangeLog format.
4 my $VERSION = '2008-12-21 12:07'; # UTC
5 # The definition above must lie within the first 8 lines in order
6 # for the Emacs time-stamp write hook (at end) to update it.
7 # If you change this file with Emacs, please let the write hook
8 # do its job. Otherwise, update this string manually.
10 # Copyright (C) 2008 Free Software Foundation, Inc.
12 # This program is free software: you can redistribute it and/or modify
13 # it under the terms of the GNU General Public License as published by
14 # the Free Software Foundation, either version 3 of the License, or
15 # (at your option) any later version.
17 # This program is distributed in the hope that it will be useful,
18 # but WITHOUT ANY WARRANTY; without even the implied warranty of
19 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
20 # GNU General Public License for more details.
22 # You should have received a copy of the GNU General Public License
23 # along with this program. If not, see <http://www.gnu.org/licenses/>.
25 # Written by Jim Meyering
30 use POSIX qw(strftime);
32 (my $ME = $0) =~ s|.*/||;
34 # use File::Coda; # http://meyering.net/code/Coda/
36 defined fileno STDOUT or return;
37 close STDOUT and return;
38 warn "$ME: failed to close standard output: $!\n";
45 my $STREAM = ($exit_code == 0 ? *STDOUT : *STDERR);
48 print $STREAM "Try `$ME --help' for more information.\n";
53 Usage: $ME [OPTIONS] [ARGS]
55 Convert git log output to ChangeLog format. If present, any ARGS
56 are passed to "git log". To avoid ARGS being parsed as options to
57 $ME, they may be preceded by '--'.
61 --since=DATE convert only the logs since DATE;
62 the default is to convert all log entries.
64 --help display this help and exit
65 --version output version information and exit
69 $ME --since=2008-01-01 > ChangeLog
70 $ME -- -n 5 foo > last-5-commits-to-branch-foo
77 # If the string $S is a well-behaved file name, simply return it.
78 # If it contains white space, quotes, etc., quote it, and return the new string.
82 if ($s =~ m![^\w+/.,-]!)
84 # Convert each single quote to '\''
85 $s =~ s/\'/\'\\\'\'/g;
86 # Then single quote the string.
94 return join (' ', map {shell_quote $_} @_);
98 my $since_date = '1970-01-01 UTC';
101 help => sub { usage 0 },
102 version => sub { print "$ME version $VERSION\n"; exit },
103 'since=s' => \$since_date,
106 my @cmd = (qw (git log --log-size), "--since=$since_date",
107 '--pretty=format:%ct %an <%ae>%n%n%s%n%b%n', @ARGV);
108 open PIPE, '-|', @cmd
109 or die ("$ME: failed to run `". quoted_cmd (@cmd) ."': $!\n"
110 . "(Is your Git too old? Version 1.5.1 or later is required.)\n");
112 my $prev_date_line = '';
115 defined (my $in = <PIPE>)
117 $in =~ /^log size (\d+)$/
118 or die "$ME:$.: Invalid line (expected log size):\n$in";
122 my $n_read = read PIPE, $log, $log_nbytes;
123 $n_read == $log_nbytes
124 or die "$ME:$.: unexpected EOF\n";
126 my @line = split "\n", $log;
127 my $author_line = shift @line;
129 or die "$ME:$.: unexpected EOF\n";
130 $author_line =~ /^(\d+) (.*>)$/
131 or die "$ME:$.: Invalid line "
132 . "(expected date/author/email):\n$author_line\n";
134 my $date_line = sprintf "%s $2\n", strftime ("%F", localtime ($1));
135 # If this line would be the same as the previous date/name/email
136 # line, then arrange not to print it.
137 if ($date_line ne $prev_date_line)
139 $prev_date_line eq ''
143 $prev_date_line = $date_line;
145 # Omit "Signed-off-by..." lines.
146 @line = grep !/^Signed-off-by: .*>$/, @line;
148 # Remove leading and trailing blank lines.
149 while ($line[0] =~ /^\s*$/) { shift @line; }
150 while ($line[$#line] =~ /^\s*$/) { pop @line; }
152 # Prefix each non-empty line with a TAB.
153 @line = map { length $_ ? "\t$_" : '' } @line;
155 print "\n", join ("\n", @line), "\n";
157 defined ($in = <PIPE>)
160 and die "$ME:$.: unexpected line:\n$in";
164 or die "$ME: error closing pipe from " . quoted_cmd (@cmd) . "\n";
165 # FIXME-someday: include $PROCESS_STATUS in the diagnostic
169 # indent-tabs-mode: nil
170 # eval: (add-hook 'write-file-hooks 'time-stamp)
171 # time-stamp-start: "my $VERSION = '"
172 # time-stamp-format: "%:y-%02m-%02d %02H:%02M"
173 # time-stamp-time-zone: "UTC"
174 # time-stamp-end: "'; # UTC"