1#!/bin/perl
2# ***** BEGIN LICENSE BLOCK *****
3# Version: MPL 1.1/GPL 2.0/LGPL 2.1
4#
5# The contents of this file are subject to the Mozilla Public License Version
6# 1.1 (the "License"); you may not use this file except in compliance with
7# the License. You may obtain a copy of the License at
8# http://www.mozilla.org/MPL/
9#
10# Software distributed under the License is distributed on an "AS IS" basis,
11# WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
12# for the specific language governing rights and limitations under the
13# License.
14#
15# The Original Code is Mozilla build system.
16#
17# The Initial Developer of the Original Code is
18# Mozilla Foundation.
19# Portions created by the Initial Developer are Copyright (C) 2008
20# the Initial Developer. All Rights Reserved.
21#
22# Contributor(s):
23#  Ted Mielczarek <ted.mielczarek@gmail.com>
24#
25# Alternatively, the contents of this file may be used under the terms of
26# either the GNU General Public License Version 2 or later (the "GPL"), or
27# the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
28# in which case the provisions of the GPL or the LGPL are applicable instead
29# of those above. If you wish to allow use of your version of this file only
30# under the terms of either the GPL or the LGPL, and not to allow others to
31# use your version of this file under the terms of the MPL, indicate your
32# decision by deleting the provisions above and replace them with the notice
33# and other provisions required by the GPL or the LGPL. If you do not delete
34# the provisions above, a recipient may use your version of this file under
35# the terms of any one of the MPL, the GPL or the LGPL.
36#
37# ***** END LICENSE BLOCK *****
38
39# Usage: apply-ed-patches.pl <source patch> <target directory> <path to ed>
40
41use FileHandle;
42
43sub do_patch {
44  my ($ed, $target_file, $patch_file, $fh) = @_;
45  # these keep winding up read only for me
46  chmod 0666, $target_file;
47  print $fh "w\n";
48  $fh->close();
49  print "$ed -s $target_file < $patch_file\n";
50  system "$ed -s $target_file < $patch_file\n";
51}
52
53my $header_done = 0;
54my ($target_file,$patch_file) = ('','');
55my $source_patch = $ARGV[0];
56my $srcdir = $ARGV[1];
57my $ed = $ARGV[2];
58$srcdir = "$srcdir/" unless $srcdir =~ m|/$|;
59my $pfh = new FileHandle($source_patch, 'r');
60while(<$pfh>) {
61  # skip initial comment header
62  next if !$header_done && /^#/;
63  $header_done = 1;
64
65  next if /^Only in/;
66  if (/^diff -re (\S+)/) {
67    my $new_file = $1;
68    $new_file =~ s|^crt/src/||;
69    $new_file = "$srcdir$new_file";
70    my $new_patch_file = "$new_file.patch";
71
72    if ($target_file ne '') {
73      do_patch $ed, $target_file, $patch_file, $fh;
74    }
75    $target_file = $new_file;
76    $patch_file = $new_patch_file;
77    $fh = new FileHandle($patch_file, 'w');
78    next;
79  }
80
81  print $fh $_ if $fh;
82}
83
84do_patch $ed, $target_file, $patch_file, $fh;
85