gecko-dev/config/purge-old-headers.pl

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#!perl
#
# The contents of this file are subject to the Mozilla Public
# License Version 1.1 (the "License"); you may not use this file
# except in compliance with the License. You may obtain a copy of
# the License at http://www.mozilla.org/MPL/
#
# Software distributed under the License is distributed on an "AS
# IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or
# implied. See the License for the specific language governing
# rights and limitations under the License.
#
# The Original Code is mozilla.org code.
#
# The Initial Developer of the Original Code is Netscape
# Communications Corporation. Portions created by Netscape are
# Copyright (C) 2001 Netscape Communications Corporation. All
# Rights Reserved.
#
# Contributor(s):
# Chris Seawood <cls@seawood.org>
#
# Usage: $0 <includedir>
#
# Purpose:
# Remove old header files by comparing list of headers generated
# on the fly against headers already existing under <includedir>
#
# Assumptions:
# All directories under (and including) <includedir> have a list
# of headers in the file .headerlist-<nameofsubdir>.
#
use strict;
use IO::Handle;
my $includedir = shift;
if (! -d $includedir) {
exit(1);
}
purge("$includedir");
exit(0);
sub purge($) {
my ($dirname) = @_;
my ($file, $dir, $tmp, $listfile);
my (@dirlist, @filelist, @masterlist, @removelist);
my $ignoredir = 0;
$listfile = "$dirname/.headerlist";
#print "Inside purge: $dirname, $listfile\n";
# Ignore files and just process subdirs if there's no master filelist
$ignoredir = 1 if (! -e "$listfile" );
# Create lists of current files and subdirectories
my $SDIR = new IO::Handle;
opendir($SDIR, "$dirname") || die "opendir($dirname): $!\n";
while ($file = readdir($SDIR)) {
next if ($file eq "." || $file eq ".." || $file =~ m/.headerlist/);
if ( -d "$dirname/$file" ) {
push @dirlist, "$file";
} else {
push @filelist, "$file" if (!$ignoredir);
}
}
closedir($SDIR);
if (!$ignoredir) {
# Read in "master" file list
undef @masterlist;
my $MLIST = new IO::Handle;
open($MLIST, "$listfile") || die "$listfile: $!\n";
while ($tmp = <$MLIST>) {
chomp($tmp);
push @masterlist, "$tmp";
}
close($MLIST);
# compare master list with read list
undef @removelist;
foreach $file (@filelist) {
push @removelist, $file if (!grep(/$file/, @masterlist));
}
}
# Call purge recursively
foreach $dir (@dirlist) {
#print "purge(\"$dirname/$dir\") \n";
purge("$dirname/$dir");
}
if (!$ignoredir) {
# Remove files
foreach $file (@removelist) {
print "purge old header: $dirname/$file\n";
unlink("$dirname/$file");
}
}
#Unlink listfile now that we're done processing this dir
unlink("$listfile") if (!$ignoredir);
}