[Emacs-diffs] Changes to tindex.pl

[Glenn Morris]

CVSROOT:        /sources/emacs
Module name:    emacs
Changes by:     Glenn Morris <gm>       07/09/06 04:23:42

Index: tindex.pl
===================================================================
RCS file: tindex.pl
diff -N tindex.pl
--- /dev/null   1 Jan 1970 00:00:00 -0000
+++ tindex.pl   6 Sep 2007 04:23:42 -0000       1.1
@@ -0,0 +1,127 @@
+#! /usr/bin/perl
+
+# Copyright (C) 2000, 2001, 2002, 2003, 2004, 2005,
+#   2006, 2007  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 3, 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 address@hidden 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 address@hidden lines, and identifiers in them are
+recorded.  In a second pass, Texinfo files in the current directory
+are scanned, and address@hidden 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 address@hidden
+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 address@hidden lines\n";
+foreach $file (@old_files) {
+    open (IN, "<$file") or fatal "Cannot open $file: $!";
+    while (<IN>) {
+       ++$tindex{$1} if /address@hidden(\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 address@hidden 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 (/address@hidden(\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 address@hidden commands for:\n";
+my $key;
+foreach $key (keys %removed) {
+    print "  $key\n";
+}
+
+# arch-tag: f8460df6-6bef-4c98-8555-e2c63a88b0fa