#! /usr/bin/perl
-# $Id: grep-changelog,v 1.5 2001/07/20 10:02:06 gerd Exp $
# Copyright (C) 1999, 2000, 2001 Free Software Foundation, Inc.
#
# Extract entries from ChangeLogs matching specified criteria.
# Optionally format the resulting output to a form suitable for RCS
# logs, like they are used in Emacs, for example. In this format,
-# author lines leading spaces, and file names are removed.
+# author lines, leading spaces, and file names are removed.
require 5;
+use strict;
# Parse command line options.
+use vars qw($author $regexp $exclude $from_date $to_date
+ $rcs_log $with_date $version $help $reverse
+ @entries);
+
use Getopt::Long;
-$result = GetOptions ("author=s" => \$author,
- "text=s" => \$regexp,
- "exclude=s" => \$exclude,
- "from-date=s" => \$from_date,
- "to-date=s" => \$to_date,
- "rcs-log" => \$rcs_log,
- "with-date" => \$with_date,
- "version" => \$version,
- "help" => \$help);
+my $result = GetOptions ("author=s" => \$author,
+ "text=s" => \$regexp,
+ "exclude=s" => \$exclude,
+ "from-date=s" => \$from_date,
+ "to-date=s" => \$to_date,
+ "rcs-log" => \$rcs_log,
+ "with-date" => \$with_date,
+ "reverse!" => \$reverse,
+ "version" => \$version,
+ "help" => \$help);
# If date options are specified, check that they have the format
# YYYY-MM-DD.
--to-date=YYYY-MM-DD match entries not younger than given date
--rcs-log format output suitable for RCS log entries.
--with-date print short date line in RCS log
+ --reverse show entries in reverse (chronological) order
--version print version info
--help print this help
sub print_log ($$) {
my ($header, $entry) = @_;
+ my $output = '';
if ($rcs_log) {
# Remove leading whitespace from entry.
$entry =~ s/^\*.*://mg;
if ($with_date) {
$header =~ /(\d\d\d\d-\d\d-\d\d)/;
- print "!changelog-date $1\n";
+ $output = "!changelog-date $1\n";
}
- print $entry;
+ $output .= $entry;
+ } else {
+ $output .= $header . $entry;
+ }
+
+ if ($reverse) {
+ push @entries, $output;
} else {
- print $header, $entry;
+ print $output;
}
}
sub parse_changelog ($) {
my $log = shift;
- my $entry;
- my $match;
+ my $entry = undef;
+ my $header = undef;
+
+ @entries = () if $reverse;
# Open the ChangeLog.
open (IN, "< $log") || die "Cannot open $log: $!";
- while ($line = <IN>) {
+ while (defined(my $line = <IN>)) {
if ($line =~ /^\S/) {
# Line is an author-line. Print previous entry if
# it matches.
if header_match_p ($header) && entry_match_p ($entry);
close IN;
+
+ if ($reverse) {
+ while (defined (my $entry = pop @entries)) {
+ print $entry;
+ }
+ }
}
# Main program. Process ChangeLogs.
-if (@ARGV > 0) {
- # If files were specified on the command line, parse those files.
- while ($log = shift @ARGV) {
- parse_changelog ($log);
- }
-} else {
- # Parse default files ChangeLog and ChangeLog.9...ChangeLog.1 in
- # that order.
- parse_changelog ("ChangeLog");
- for ($i = 9; $i >= 1; --$i) {
- my $log = "ChangeLog.$i";
- parse_changelog ($log) if -f $log;
- }
+# If files were specified on the command line, parse those files in the
+# order supplied by the user; otherwise parse default files ChangeLog and
+# ChangeLog.9...ChangeLog.1 according to $reverse.
+unless (@ARGV > 0) {
+ @ARGV = ("ChangeLog", map {"ChangeLog.$_"} reverse 1..9);
+ @ARGV = reverse @ARGV if $reverse;
+}
+
+while (defined (my $log = shift @ARGV)) {
+ parse_changelog ($log) if -f $log;
}