-#! /usr/local/bin/perl
-# $Id: grep-changelog,v 1.19 1999/08/10 13:22:23 gerd Exp $
+#! /usr/bin/perl
-# Copyright (C) 1999 Free Software Foundation, Inc.
+# Copyright (C) 1999, 2000, 2001 Free Software Foundation, Inc.
#
# This file is part of GNU Emacs.
#
# 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.
Print entries in ChangeLogs matching various criteria. Valid options
are
- --author=AUTHOR match entries whose author line matches
+ --author=AUTHOR match entries whose author line matches
regular expression AUTHOR
--text=TEXT match entries whose text matches regular
expression TEXT.
--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
If no CHANGELOG is specified scan the files "ChangeLog" and
-"ChangeLog.[9-1]" in the current directory. Old-style dates in ChangeLogs
+"ChangeLog.[9-1]" in the current directory. Old-style dates in ChangeLogs
are not recognized.
USAGE
exit $help ? 0 : 1;
sub header_match_p ($) {
my $header = shift;
+ return 0 unless $header;
+
# No match if AUTHOR-regexp specified and doesn't match.
return 0 if $author && $header !~ /$author/;
}
-# Value is non-zero if ENTRY matches the ciiteria specified on the
+# Value is non-zero if ENTRY matches the criteria specified on the
# command line, i.e. it matches $regexp, and it doesn't match
# $exclude.
sub entry_match_p ($) {
my $entry = shift;
+ return 0 unless $entry;
+
if ($regexp) {
- return 1 if ($entry =~ /$regexp/
+ return 1 if ($entry =~ /$regexp/
&& (!$exclude || $entry !~ $exclude));
} else {
return 1 if !$exclude || $entry !~ $exclude;
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 {
- print $header, $entry;
+ $output .= $header . $entry;
+ }
+
+ if ($reverse) {
+ push @entries, $output;
+ } else {
+ 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.
- print_log ($header, $entry)
+ print_log ($header, $entry)
if header_match_p ($header) && entry_match_p ($entry);
$entry = "";
$header = $line;
# Add empty lines below the header.
- while (($line = <IN>) && $line =~ /^\s*$/) {
+ while (defined($line = <IN>) && $line =~ /^\s*$/) {
$header = "$header$line";
}
- }
+ }
+
+ last unless defined $line;
if ($line =~ /^\s*\*/) {
# LINE is the first line of a ChangeLog entry. Print
# previous entry if it matches.
- print_log ($header, $entry)
+ print_log ($header, $entry)
if header_match_p ($header) && entry_match_p ($entry);
$entry = $line;
} else {
}
# Print last entry if it matches.
- print_log ($header, $entry)
+ print_log ($header, $entry)
if header_match_p ($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;
}
-# gre-changelog ends here.
+# grep-changelog ends here.