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221 lines
6.0 KiB
Perl
Executable File
221 lines
6.0 KiB
Perl
Executable File
#! /usr/local/bin/perl
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# $Id: grep-changelog,v 1.19 1999/08/10 13:22:23 gerd Exp $
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# Copyright (C) 1999 Free Software Foundation, Inc.
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#
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# This file is part of GNU Emacs.
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#
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# GNU Emacs is free software; you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation; either version 2, or (at your option)
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# any later version.
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#
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# GNU Emacs is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with GNU Emacs; see the file COPYING. If not, write to the
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# Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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# Boston, MA 02111-1307, USA.
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# Extract entries from ChangeLogs matching specified criteria.
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# Optionally format the resulting output to a form suitable for RCS
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# logs, like they are used in Emacs, for example. In this format,
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# author lines leading spaces, and file names are removed.
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require 5;
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# Parse command line options.
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use Getopt::Long;
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$result = GetOptions ("author=s" => \$author,
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"text=s" => \$regexp,
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"exclude=s" => \$exclude,
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"from-date=s" => \$from_date,
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"to-date=s" => \$to_date,
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"rcs-log" => \$rcs_log,
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"with-date" => \$with_date,
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"version" => \$version,
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"help" => \$help);
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# If date options are specified, check that they have the format
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# YYYY-MM-DD.
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$result = 0 if $from_date && $from_date !~ /^\d\d\d\d-\d\d-\d\d$/;
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$result = 0 if $to_date && $to_date !~ /^\d\d\d\d-\d\d-\d\d$/;
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# Print usage information and exit when necessary.
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if ($result == 0 || $help) {
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print <<USAGE;
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Usage: $0 [options] [CHANGELOG...]
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Print entries in ChangeLogs matching various criteria. Valid options
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are
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--author=AUTHOR match entries whose author line matches
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regular expression AUTHOR
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--text=TEXT match entries whose text matches regular
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expression TEXT.
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--exclude=TEXT exclude entries matching TEXT.
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--from-date=YYYY-MM-DD match entries not older than given date
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--to-date=YYYY-MM-DD match entries not younger than given date
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--rcs-log format output suitable for RCS log entries.
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--with-date print short date line in RCS log
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--version print version info
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--help print this help
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If no CHANGELOG is specified scan the files "ChangeLog" and
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"ChangeLog.[9-1]" in the current directory. Old-style dates in ChangeLogs
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are not recognized.
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USAGE
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exit $help ? 0 : 1;
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}
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# Print version info and exit if `--version' was specified.
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if ($version) {
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print "0.1\n";
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exit 0;
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}
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# Value is non-zero if HEADER matches according to command line
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# options specified, i.e. it matches $author, and its date is in
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# the range $from_date <= date <= $to_date.
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sub header_match_p ($) {
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my $header = shift;
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# No match if AUTHOR-regexp specified and doesn't match.
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return 0 if $author && $header !~ /$author/;
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# Check that the date of the entry matches if date options
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# `--from-date' and/or `--to-date' were specified . Old-style
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# dates in ChangeLogs are not recognized, and never match.
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if ($from_date || $to_date) {
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if ($header =~ /^(\d\d\d\d-\d\d-\d\d)/) {
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my $date = $1;
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return 0 if $from_date && $date lt $from_date;
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return 0 if $to_date && $date gt $to_date;
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} else {
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# Don't bother recognizing old-style dates.
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return 0;
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}
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}
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return 1;
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}
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# Value is non-zero if ENTRY matches the ciiteria specified on the
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# command line, i.e. it matches $regexp, and it doesn't match
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# $exclude.
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sub entry_match_p ($) {
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my $entry = shift;
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if ($regexp) {
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return 1 if ($entry =~ /$regexp/
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&& (!$exclude || $entry !~ $exclude));
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} else {
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return 1 if !$exclude || $entry !~ $exclude;
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}
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return 0;
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}
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# Print HEADER and/or ENTRY in a format suitable for what was
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# specified on the command line. If $rcs_log is specified, author
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# lines are not printed, and leading spaces and file names are removed
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# from ChangeLog entries.
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sub print_log ($$) {
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my ($header, $entry) = @_;
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if ($rcs_log) {
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# Remove leading whitespace from entry.
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$entry =~ s/^\s+//mg;
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# Remove file name parts.
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$entry =~ s/^\*.*\(/(/mg;
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# Remove file name parts, 2.
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$entry =~ s/^\*.*://mg;
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if ($with_date) {
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$header =~ /(\d\d\d\d-\d\d-\d\d)/;
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print "!changelog-date $1\n";
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}
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print $entry;
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} else {
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print $header, $entry;
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}
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}
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# Scan LOG for matching entries, and print them to standard output.
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sub parse_changelog ($) {
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my $log = shift;
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my $entry;
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my $match;
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# Open the ChangeLog.
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open (IN, "< $log") || die "Cannot open $log: $!";
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while ($line = <IN>) {
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if ($line =~ /^\S/) {
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# Line is an author-line. Print previous entry if
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# it matches.
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print_log ($header, $entry)
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if header_match_p ($header) && entry_match_p ($entry);
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$entry = "";
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$header = $line;
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# Add empty lines below the header.
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while (($line = <IN>) && $line =~ /^\s*$/) {
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$header = "$header$line";
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}
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}
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if ($line =~ /^\s*\*/) {
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# LINE is the first line of a ChangeLog entry. Print
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# previous entry if it matches.
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print_log ($header, $entry)
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if header_match_p ($header) && entry_match_p ($entry);
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$entry = $line;
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} else {
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# Add LINE to the current entry.
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$entry = "$entry$line";
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}
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}
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# Print last entry if it matches.
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print_log ($header, $entry)
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if header_match_p ($header) && entry_match_p ($entry);
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close IN;
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}
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# Main program. Process ChangeLogs.
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if (@ARGV > 0) {
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# If files were specified on the command line, parse those files.
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while ($log = shift @ARGV) {
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parse_changelog ($log);
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}
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} else {
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# Parse default files ChangeLog and ChangeLog.9...ChangeLog.1 in
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# that order.
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parse_changelog ("ChangeLog");
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for ($i = 9; $i >= 1; --$i) {
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my $log = "ChangeLog.$i";
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parse_changelog ($log) if -f $log;
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}
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}
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# gre-changelog ends here.
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