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128 lines
3.5 KiB
Perl
Executable File
128 lines
3.5 KiB
Perl
Executable File
#! /usr/bin/perl
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# Copyright (C) 2000, 2002, 2003, 2004, 2005,
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# 2006 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., 51 Franklin Street, Fifth Floor,
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# Boston, MA 02110-1301, USA.
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require 5;
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use Getopt::Long;
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my $USAGE = <<ENDUSAGE;
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Remove \@tindex lines from files that were already present in previous
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versions.
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Usage: $0 [--old=EXT] FILE...
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$0 --help
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$0 --version
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--help display this help and exit
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--version print version and exit
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--old=DIR find old files in DIR
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The script performs two passes. In the first pass, Texinfo files from
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DIR are scanned for \@tindex lines, and identifiers in them are
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recorded. In a second pass, Texinfo files in the current directory
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are scanned, and \@tindex lines for identifiers that were recorded in
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the first pass are removed. Old file contents are saved in files
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with extension ".orig". A list of modified files and removed \@tindex
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identifiers is printed to stdout at the end.
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ENDUSAGE
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sub fatal {
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print STDERR "$0: ", @_, ".\n";
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exit 1;
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}
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my $help = 0;
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my $version = 0;
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my $old;
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my $rc = GetOptions ('help' => \$help, 'version' => \$version,
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'old=s' => \$old);
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if ($version) {
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print "0.1\n";
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exit 0;
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} elsif (!$rc || !$old || @ARGV) {
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print $USAGE;
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exit 1;
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} elsif ($help) {
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print $USAGE;
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exit 0;
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}
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# Fill the hash %tindex with associations VAR -> COUNT where
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# the keys VAR are identifiers mentioned in @tindex lines in the older
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# files to process and COUNT is the number of times they are seen in
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# the files.
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my %tindex;
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my %removed;
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my @old_files = glob "$old/*.texi";
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my @new_files = glob "*.texi";
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fatal ("No Texinfo files found in `$old'") unless @old_files;
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fatal ("No Texinfo files found in current directory") unless @new_files;
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print "Scanning old files for \@tindex lines\n";
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foreach $file (@old_files) {
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open (IN, "<$file") or fatal "Cannot open $file: $!";
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while (<IN>) {
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++$tindex{$1} if /^\s*\@tindex\s+(\S+)/;
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}
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close IN;
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}
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# Process current files and remove those @tindex lines which we
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# know were already present in the files scanned above.
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print "Removing old \@tindex lines\n";
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foreach $file (@new_files) {
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my $modified = 0;
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my $contents = "";
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open (IN, "< $file") or fatal "Cannot open $file.orig for reading: $!";
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while (<IN>) {
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if (/^\s*\@tindex\s+(\S+)/ && $tindex{$1}) {
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++$removed{$1};
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$modified = 1;
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} else {
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$contents = $contents . $_;
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}
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}
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close IN;
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if ($modified) {
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print " $file\n";
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system ("cp $file $file.orig") == 0 or fatal "Cannot backup $file: $!";
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open (OUT, ">$file") or fatal "Cannot open $file for writing: $!";
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print OUT $contents;
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close OUT;
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}
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}
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# Print a list of identifiers removed.
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print "Removed \@tindex commands for:\n";
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my $key;
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foreach $key (keys %removed) {
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print " $key\n";
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}
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# arch-tag: f8460df6-6bef-4c98-8555-e2c63a88b0fa
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