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#! /usr/bin/perl
# Copyright (C) 2000, 2002, 2003, 2004, 2005 Free Software Foundation, Inc.
#
# This file is part of GNU Emacs.
#
# GNU Emacs is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 2, or (at your option)
# any later version.
#
# GNU Emacs is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with GNU Emacs; see the file COPYING. If not, write to the
# Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
# Boston, MA 02110-1301, USA.
require 5;
use Getopt::Long;
my $USAGE = <<ENDUSAGE;
Remove \@tindex lines from files that were already present in previous
versions.
Usage: $0 [--old=EXT] FILE...
$0 --help
$0 --version
--help display this help and exit
--version print version and exit
--old=DIR find old files in DIR
The script performs two passes. In the first pass, Texinfo files from
DIR are scanned for \@tindex lines, and identifiers in them are
recorded. In a second pass, Texinfo files in the current directory
are scanned, and \@tindex lines for identifiers that were recorded in
the first pass are removed. Old file contents are saved in files
with extension ".orig". A list of modified files and removed \@tindex
identifiers is printed to stdout at the end.
ENDUSAGE
sub fatal {
print STDERR "$0: ", @_, ".\n";
exit 1;
}
my $help = 0;
my $version = 0;
my $old;
my $rc = GetOptions ('help' => \$help, 'version' => \$version,
'old=s' => \$old);
if ($version) {
print "0.1\n";
exit 0;
} elsif (!$rc || !$old || @ARGV) {
print $USAGE;
exit 1;
} elsif ($help) {
print $USAGE;
exit 0;
}
# Fill the hash %tindex with associations VAR -> COUNT where
# the keys VAR are identifiers mentioned in @tindex lines in the older
# files to process and COUNT is the number of times they are seen in
# the files.
my %tindex;
my %removed;
my @old_files = glob "$old/*.texi";
my @new_files = glob "*.texi";
fatal ("No Texinfo files found in `$old'") unless @old_files;
fatal ("No Texinfo files found in current directory") unless @new_files;
print "Scanning old files for \@tindex lines\n";
foreach $file (@old_files) {
open (IN, "<$file") or fatal "Cannot open $file: $!";
while (<IN>) {
++$tindex{$1} if /^\s*\@tindex\s+(\S+)/;
}
close IN;
}
# Process current files and remove those @tindex lines which we
# know were already present in the files scanned above.
print "Removing old \@tindex lines\n";
foreach $file (@new_files) {
my $modified = 0;
my $contents = "";
open (IN, "< $file") or fatal "Cannot open $file.orig for reading: $!";
while (<IN>) {
if (/^\s*\@tindex\s+(\S+)/ && $tindex{$1}) {
++$removed{$1};
$modified = 1;
} else {
$contents = $contents . $_;
}
}
close IN;
if ($modified) {
print " $file\n";
system ("cp $file $file.orig") == 0 or fatal "Cannot backup $file: $!";
open (OUT, ">$file") or fatal "Cannot open $file for writing: $!";
print OUT $contents;
close OUT;
}
}
# Print a list of identifiers removed.
print "Removed \@tindex commands for:\n";
my $key;
foreach $key (keys %removed) {
print " $key\n";
}
# arch-tag: f8460df6-6bef-4c98-8555-e2c63a88b0fa
|
