1#!/usr/bin/perl 2 3=head1 NAME 4 5gitlog2changelog - tiny tool to convert Git commit logs to GNU-style ChangeLog 6 7=head1 SYNOPSIS 8 9git log | gitlog2changelog > ChangeLog 10 11TZ=UTC git log --date=local --no-merges --numstat --pretty=fuller | gitlog2changelog > ChangeLog 12 13(Use TZ=UTC and --date=local to use UTC instead of the original time zone. 14 Use --no-merges to ignore merge commits. 15 Use --numstat to show changed files. 16 Use --pretty=fuller to show committer date instead of author date.) 17 18=head1 SEE ALSO 19 20GNU Coding Standards: 21 <http://www.gnu.org/prep/standards/html_node/index.html> 22 <http://www.gnu.org/prep/standards/html_node/Change-Logs.html> 23 24=head1 COPYRIGHT 25 26Copyright (c) 2013 Tatsuya Kinoshita 27 28Redistribution and use in source and binary forms, with or without 29modification, are permitted without restriction, with NO WARRANTY. 30You may regard this as a work that is placed in the public domain. 31 32=cut 33 34use strict; 35use warnings; 36 37my $author = ""; my $date = ""; my $comment = ""; my @files = (); 38my $pre_header = ""; 39 40sub print_entry { 41 my $header = "$date $author"; 42 $header =~ s/ </ </; 43 if ($header ne $pre_header) { 44 print "$header\n\n"; 45 $pre_header = $header; 46 } 47 print "\t* "; 48 49 my $files_line_len = 10; 50 my $files_lines = ""; 51 foreach my $file (@files) { 52 my $len = length($file); 53 if ($files_line_len > 10 && ($files_line_len + $len > 78)) { 54 $files_lines =~ s/, $/:\n\t* /; 55 $files_line_len = 10; 56 } 57 $files_lines .= "$file, "; 58 $files_line_len += $len + 2; 59 } 60 61 if ($files_lines) { 62 my $short_comment = ""; 63 if ($comment =~ /^([^\n]+)/) { 64 $short_comment = $1; 65 } 66 if ($short_comment =~ /:[ \t]|[^\(\[][:,\)\]][ \t]*$/ || 67 $files_line_len + length($short_comment) > 78) { 68 $files_lines =~ s/, $/:\n\t/; 69 } else { 70 $files_lines =~ s/, $/: /; 71 } 72 print "$files_lines"; 73 } 74 75 $comment =~ s/\.?[ \t]*\n/.\n/; 76 $comment =~ s/\n([ \t]*\n)+/\n/g; 77 $comment =~ s/\n+$//; 78 $comment =~ s/\n/\n\t/g; 79 $comment =~ s/^\* //; 80 print "$comment\n\n"; 81 82 $author = ""; $date = ""; $comment = ""; @files = (); 83} 84 85while (<>) { 86 if (/^Author:[ \t]+([^\n]+)/) { 87 $author = $1; 88 } elsif (/^(Commit|)Date:[ \t]+(Sun|Mon|Tue|Wed|Thu|Fri|Sat) +(Jan|Feb|Mar|Apr|May|Jun|Jul|Aug|Sep|Oct|Nov|Dec) +(\d+) +\d+:\d+:\d+ +(\d+)/) { # Assume git log --date=default or --date=local 89 my $mm = $3; 90 my $dd = $4; 91 my $yyyy = $5; 92 $mm =~ s/Jan/01/; $mm =~ s/Feb/02/; $mm =~ s/Mar/03/; $mm =~ s/Apr/04/; 93 $mm =~ s/May/05/; $mm =~ s/Jun/06/; $mm =~ s/Jul/07/; $mm =~ s/Aug/08/; 94 $mm =~ s/Sep/09/; $mm =~ s/Oct/10/; $mm =~ s/Nov/11/; $mm =~ s/Dec/12/; 95 $dd =~ s/^(\d)$/0$1/; 96 $date = "$yyyy-$mm-$dd"; 97 } elsif (/^(Commit|)Date:[ \t]+(\d+-\d+-\d+)/) { # Assume git log --date=short or --date=iso 98 $date = $2; 99 } elsif (/^(Commit|)Date:[ \t]+(.+)$/) { 100 $date = $2; 101 } elsif (/^ (.*)$/) { 102 $comment .= "$1\n"; 103 } elsif (/^[-0-9]+\t[-0-9]+\t(.*)$/) { # Assume git log --numstat 104 push @files, $1; 105 } elsif (/^commit / && $author && $date) { 106 &print_entry; 107 } 108} 109if ($author && $date) { 110 &print_entry; 111} 112