source: LMDZ5/trunk/tools/fcm/bin/fcm_graphic_diff

Last change on this file was 1578, checked in by jghattas, 13 years ago
  • Add fcm in LMDZ5/tools directory

It is no longer needed to have fcm in your environement PATH variable.
Now makelmdz_fcm takes by default this fcm. It is still possible to use
another fcm, using -fcm_path argument in makelmdz_fcm.

  • Property svn:executable set to *
File size: 2.5 KB
Line 
1#!/usr/bin/perl
2# ------------------------------------------------------------------------------
3# NAME
4#   fcm_graphic_diff
5#
6# SYNOPSIS
7#   fcm_graphic_diff [-u] [-L OLD_DESC] [-L NEW_DESC] OLD NEW
8#
9# DESCRIPTION
10#   Wrapper script which invokes a graphical diff tool. Its interface is
11#   compatible with the "svn diff" command and can be used in combination with
12#   its "--diff-cmd" option. The command prints the OLD_DESC and NEW_DESC if
13#   they are both set. The two arguments OLD and NEW must be set and are the
14#   files to compare. The graphical diff tool invoked depends on the value of
15#   the FCM_GRAPHIC_DIFF environment variable. The command exits if the
16#   environment variable is not set.
17#
18# COPYRIGHT
19#   This program is part of the FCM system.
20#   (C) Crown copyright Met Office. All rights reserved.
21#   For further details please refer to the file COPYRIGHT.txt
22#   which you should have received as part of this distribution.
23# ------------------------------------------------------------------------------
24
25# Standard pragmas:
26use warnings;
27use strict;
28
29use Getopt::Long;
30
31# ------------------------------------------------------------------------------
32
33my ($u, @label);
34GetOptions ('u' => \$u, 'L=s' => \@label);
35
36# Check existence of files
37for my $i (0 .. 1) {
38  die $ARGV[$i], ': not found, abort' unless $ARGV[$i] and -f $ARGV[$i];
39}
40
41my ($old, $new) = @ARGV;
42
43if ($old =~ m#.svn/empty-file$#) {
44  print 'Skipping new file', "\n\n";
45
46} elsif ($new =~ m#.svn/empty-file$#) {
47  print 'Skipping deleted file', "\n\n";
48
49} elsif (-z $old) {
50  print 'Skipping as old file is empty (or does not exist)', "\n\n";
51
52} elsif (-z $new) {
53  print 'Skipping as new file is empty (or deleted)', "\n\n";
54
55} elsif (-B $new) {
56  print 'Skipping binary file', "\n\n";
57
58} else {
59  # Print descriptions of files
60  if (@label >= 2) {
61    print '--- ', $label[0], "\n", '+++ ', $label[1], "\n\n";
62  }
63
64  # FCM_GRAPHIC_DIFF is the graphical diff tool command
65  my $cmd = (exists $ENV{FCM_GRAPHIC_DIFF} ? $ENV{FCM_GRAPHIC_DIFF} : 'xxdiff');
66
67  if ($cmd) {
68    my @options = ();
69
70    # Set options for labels if appropriate
71    if (@label >= 2) {
72      if ($cmd eq 'tkdiff') {
73        # Use tkdiff
74        @options = ('-L', $label[0], '-L', $label[1]);
75
76      } elsif ($cmd eq 'xxdiff') {
77        # Use xxdiff
78        @options = ('--title1', $label[0], '--title2', $label[1]);
79      }
80    }
81
82    # Execute the command
83    my @command = ($cmd, @options, $old, $new);
84    exec (@command) or die 'Cannot execute: ', join (' ', @command);
85  }
86
87  exit;
88}
89
90__END__
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