if 0;
# Convert git log output to ChangeLog format.
-my $VERSION = '2009-10-30 13:46'; # UTC
+my $VERSION = '2012-07-29 06:11'; # 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) 2008-2011 Free Software Foundation, Inc.
+# Copyright (C) 2008-2013 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
my $STREAM = ($exit_code == 0 ? *STDOUT : *STDERR);
if ($exit_code != 0)
{
- print $STREAM "Try `$ME --help' for more information.\n";
+ print $STREAM "Try '$ME --help' for more information.\n";
}
else
{
OPTIONS:
+ --amend=FILE FILE maps from an SHA1 to perl code (i.e., s/old/new/) that
+ makes a change to SHA1's commit log text or metadata.
+ --append-dot append a dot to the first line of each commit message if
+ there is no other punctuation or blank at the end.
+ --no-cluster never cluster commit messages under the same date/author
+ header; the default is to cluster adjacent commit messages
+ if their headers are the same and neither commit message
+ contains multiple paragraphs.
+ --srcdir=DIR the root of the source tree, from which the .git/
+ directory can be derived.
--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'
-
+ --strip-tab remove one additional leading TAB from commit message lines.
+ --strip-cherry-pick remove data inserted by "git cherry-pick";
+ this includes the "cherry picked from commit ..." line,
+ and the possible final "Conflicts:" paragraph.
--help display this help and exit
--version output version information and exit
$ME --since=2008-01-01 > ChangeLog
$ME -- -n 5 foo > last-5-commits-to-branch-foo
+SPECIAL SYNTAX:
+
+The following types of strings are interpreted specially when they appear
+at the beginning of a log message line. They are not copied to the output.
+
+ Copyright-paperwork-exempt: Yes
+ Append the "(tiny change)" notation to the usual "date name email"
+ ChangeLog header to mark a change that does not require a copyright
+ assignment.
+ Co-authored-by: Joe User <user\@example.com>
+ List the specified name and email address on a second
+ ChangeLog header, denoting a co-author.
+ Signed-off-by: Joe User <user\@example.com>
+ These lines are simply elided.
+
+In a FILE specified via --amend, comment lines (starting with "#") are ignored.
+FILE must consist of <SHA,CODE+> pairs where SHA is a 40-byte SHA1 (alone on
+a line) referring to a commit in the current project, and CODE refers to one
+or more consecutive lines of Perl code. Pairs must be separated by one or
+more blank line.
+
+Here is sample input for use with --amend=FILE, from coreutils:
+
+3a169f4c5d9159283548178668d2fae6fced3030
+# fix typo in title:
+s/all tile types/all file types/
+
+1379ed974f1fa39b12e2ffab18b3f7a607082202
+# Due to a bug in vc-dwim, I mis-attributed a patch by Paul to myself.
+# Change the author to be Paul. Note the escaped "@":
+s,Jim .*>,Paul Eggert <eggert\\\@cs.ucla.edu>,
+
EOF
}
exit $exit_code;
return join (' ', map {shell_quote $_} @_);
}
+# Parse file F.
+# Comment lines (starting with "#") are ignored.
+# F must consist of <SHA,CODE+> pairs where SHA is a 40-byte SHA1
+# (alone on a line) referring to a commit in the current project, and
+# CODE refers to one or more consecutive lines of Perl code.
+# Pairs must be separated by one or more blank line.
+sub parse_amend_file($)
+{
+ my ($f) = @_;
+
+ open F, '<', $f
+ or die "$ME: $f: failed to open for reading: $!\n";
+
+ my $fail;
+ my $h = {};
+ my $in_code = 0;
+ my $sha;
+ while (defined (my $line = <F>))
+ {
+ $line =~ /^\#/
+ and next;
+ chomp $line;
+ $line eq ''
+ and $in_code = 0, next;
+
+ if (!$in_code)
+ {
+ $line =~ /^([0-9a-fA-F]{40})$/
+ or (warn "$ME: $f:$.: invalid line; expected an SHA1\n"),
+ $fail = 1, next;
+ $sha = lc $1;
+ $in_code = 1;
+ exists $h->{$sha}
+ and (warn "$ME: $f:$.: duplicate SHA1\n"),
+ $fail = 1, next;
+ }
+ else
+ {
+ $h->{$sha} ||= '';
+ $h->{$sha} .= "$line\n";
+ }
+ }
+ close F;
+
+ $fail
+ and exit 1;
+
+ return $h;
+}
+
+# git_dir_option $SRCDIR
+#
+# From $SRCDIR, the --git-dir option to pass to git (none if $SRCDIR
+# is undef). Return as a list (0 or 1 element).
+sub git_dir_option($)
{
- my $since_date = '1970-01-01 UTC';
+ my ($srcdir) = @_;
+ my @res = ();
+ if (defined $srcdir)
+ {
+ my $qdir = shell_quote $srcdir;
+ my $cmd = "cd $qdir && git rev-parse --show-toplevel";
+ my $qcmd = shell_quote $cmd;
+ my $git_dir = qx($cmd);
+ defined $git_dir
+ or die "$ME: cannot run $qcmd: $!\n";
+ $? == 0
+ or die "$ME: $qcmd had unexpected exit code or signal ($?)\n";
+ chomp $git_dir;
+ push @res, "--git-dir=$git_dir/.git";
+ }
+ @res;
+}
+
+{
+ my $since_date;
my $format_string = '%s%n%b%n';
+ my $amend_file;
+ my $append_dot = 0;
+ my $cluster = 1;
+ my $strip_tab = 0;
+ my $strip_cherry_pick = 0;
+ my $srcdir;
GetOptions
(
help => sub { usage 0 },
version => sub { print "$ME version $VERSION\n"; exit },
'since=s' => \$since_date,
'format=s' => \$format_string,
+ 'amend=s' => \$amend_file,
+ 'append-dot' => \$append_dot,
+ 'cluster!' => \$cluster,
+ 'strip-tab' => \$strip_tab,
+ 'strip-cherry-pick' => \$strip_cherry_pick,
+ 'srcdir=s' => \$srcdir,
) or usage 1;
- my @cmd = (qw (git log --log-size), "--since=$since_date",
- '--pretty=format:%ct %an <%ae>%n%n'.$format_string, @ARGV);
+ defined $since_date
+ and unshift @ARGV, "--since=$since_date";
+
+ # This is a hash that maps an SHA1 to perl code (i.e., s/old/new/)
+ # that makes a correction in the log or attribution of that commit.
+ my $amend_code = defined $amend_file ? parse_amend_file $amend_file : {};
+
+ my @cmd = ('git',
+ git_dir_option $srcdir,
+ qw(log --log-size),
+ '--pretty=format:%H:%ct %an <%ae>%n%n'.$format_string, @ARGV);
open PIPE, '-|', @cmd
- or die ("$ME: failed to run `". quoted_cmd (@cmd) ."': $!\n"
+ or die ("$ME: failed to run '". quoted_cmd (@cmd) ."': $!\n"
. "(Is your Git too old? Version 1.5.1 or later is required.)\n");
+ my $prev_multi_paragraph;
my $prev_date_line = '';
+ my @prev_coauthors = ();
while (1)
{
defined (my $in = <PIPE>)
$n_read == $log_nbytes
or die "$ME:$.: unexpected EOF\n";
- my @line = split "\n", $log;
+ # Extract leading hash.
+ my ($sha, $rest) = split ':', $log, 2;
+ defined $sha
+ or die "$ME:$.: malformed log entry\n";
+ $sha =~ /^[0-9a-fA-F]{40}$/
+ or die "$ME:$.: invalid SHA1: $sha\n";
+
+ # If this commit's log requires any transformation, do it now.
+ my $code = $amend_code->{$sha};
+ if (defined $code)
+ {
+ eval 'use Safe';
+ my $s = new Safe;
+ # Put the unpreprocessed entry into "$_".
+ $_ = $rest;
+
+ # Let $code operate on it, safely.
+ my $r = $s->reval("$code")
+ or die "$ME:$.:$sha: failed to eval \"$code\":\n$@\n";
+
+ # Note that we've used this entry.
+ delete $amend_code->{$sha};
+
+ # Update $rest upon success.
+ $rest = $_;
+ }
+
+ # Remove lines inserted by "git cherry-pick".
+ if ($strip_cherry_pick)
+ {
+ $rest =~ s/^\s*Conflicts:\n.*//sm;
+ $rest =~ s/^\s*\(cherry picked from commit [\da-f]+\)\n//m;
+ }
+
+ my @line = split "\n", $rest;
my $author_line = shift @line;
defined $author_line
or die "$ME:$.: unexpected EOF\n";
or die "$ME:$.: Invalid line "
. "(expected date/author/email):\n$author_line\n";
- 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)
+ # Format 'Copyright-paperwork-exempt: Yes' as a standard ChangeLog
+ # `(tiny change)' annotation.
+ my $tiny = (grep (/^Copyright-paperwork-exempt:\s+[Yy]es$/, @line)
+ ? ' (tiny change)' : '');
+
+ my $date_line = sprintf "%s %s$tiny\n",
+ strftime ("%F", localtime ($1)), $2;
+
+ my @coauthors = grep /^Co-authored-by:.*$/, @line;
+ # Omit meta-data lines we've already interpreted.
+ @line = grep !/^(?:Signed-off-by:[ ].*>$
+ |Co-authored-by:[ ]
+ |Copyright-paperwork-exempt:[ ]
+ )/x, @line;
+
+ # Remove leading and trailing blank lines.
+ if (@line)
+ {
+ while ($line[0] =~ /^\s*$/) { shift @line; }
+ while ($line[$#line] =~ /^\s*$/) { pop @line; }
+ }
+
+ # Record whether there are two or more paragraphs.
+ my $multi_paragraph = grep /^\s*$/, @line;
+
+ # Format 'Co-authored-by: A U Thor <email@example.com>' lines in
+ # standard multi-author ChangeLog format.
+ for (@coauthors)
+ {
+ s/^Co-authored-by:\s*/\t /;
+ s/\s*</ </;
+
+ /<.*?@.*\..*>/
+ or warn "$ME: warning: missing email address for "
+ . substr ($_, 5) . "\n";
+ }
+
+ # If clustering of commit messages has been disabled, if this header
+ # would be different from the previous date/name/email/coauthors header,
+ # or if this or the previous entry consists of two or more paragraphs,
+ # then print the header.
+ if ( ! $cluster
+ || $date_line ne $prev_date_line
+ || "@coauthors" ne "@prev_coauthors"
+ || $multi_paragraph
+ || $prev_multi_paragraph)
{
$prev_date_line eq ''
or print "\n";
print $date_line;
+ @coauthors
+ and print join ("\n", @coauthors), "\n";
}
$prev_date_line = $date_line;
-
- # Omit "Signed-off-by..." lines.
- @line = grep !/^Signed-off-by: .*>$/, @line;
+ @prev_coauthors = @coauthors;
+ $prev_multi_paragraph = $multi_paragraph;
# If there were any lines
if (@line == 0)
}
else
{
- # Remove leading and trailing blank lines.
- while ($line[0] =~ /^\s*$/) { shift @line; }
- while ($line[$#line] =~ /^\s*$/) { pop @line; }
+ if ($append_dot)
+ {
+ # If the first line of the message has enough room, then
+ if (length $line[0] < 72)
+ {
+ # append a dot if there is no other punctuation or blank
+ # at the end.
+ $line[0] =~ /[[:punct:]\s]$/
+ or $line[0] .= '.';
+ }
+ }
+
+ # Remove one additional leading TAB from each line.
+ $strip_tab
+ and map { s/^\t// } @line;
# Prefix each non-empty line with a TAB.
@line = map { length $_ ? "\t$_" : '' } @line;
close PIPE
or die "$ME: error closing pipe from " . quoted_cmd (@cmd) . "\n";
# FIXME-someday: include $PROCESS_STATUS in the diagnostic
+
+ # Complain about any unused entry in the --amend=F specified file.
+ my $fail = 0;
+ foreach my $sha (keys %$amend_code)
+ {
+ warn "$ME:$amend_file: unused entry: $sha\n";
+ $fail = 1;
+ }
+
+ exit $fail;
}
# Local Variables:
projects / debian / tar / blobdiff