1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
|
package DependencyEditor;
# ************************************************************
# Description : Edits existing dependencies.
# Author : Chad Elliott
# Create Date : 2/10/2002
# ************************************************************
# ************************************************************
# Pragmas
# ************************************************************
use strict;
use FileHandle;
use DependencyGenerator;
# ************************************************************
# Subroutine Section
# ************************************************************
sub new {
return bless {}, $_[0];
}
sub process {
my($self, $output, $type, $noinline, $macros,
$ipaths, $replace, $exclude, $files,
$append) = @_;
## Back up the original file and receive the contents
my $contents;
if (-s $output) {
$contents = [];
if (!$self->backup($output, $contents, $append)) {
print STDERR "ERROR: Unable to backup $output\n";
return 1;
}
}
## Write out the contents of the file
my $fh = new FileHandle();
if (open($fh, ">$output")) {
if (defined $contents) {
foreach my $line (@$contents) {
print $fh $line;
}
}
if (!$append) {
## Write out the new dependency marker
print $fh "# DO NOT DELETE THIS LINE -- depgen.pl uses it.\n",
"# DO NOT PUT ANYTHING AFTER THIS LINE, IT WILL GO AWAY.\n\n";
}
else {
## Write start append comment
print $fh "# DO NOT DELETE THIS LINE -- depgen.pl appended ",
"the following.\n",
"# APPENDED DEPENDENCY RULES " ,
"by depgen.pl.\n\n";
}
## Generate the new dependencies and write them to the file
my $dep = new DependencyGenerator($macros, $ipaths, $replace,
$type, $noinline,
$exclude);
## Sort the files so the dependencies are reproducible
foreach my $file (sort @$files) {
## In some situations we may be passed a directory as part of an
## option. If it is an unknown option, we may think the directory
## needs to be part of the dependencies when it should not.
print $fh $dep->process($file), "\n" if (!-d $file);
}
## Write out the end of the block warning
print $fh "# IF YOU PUT ANYTHING HERE IT WILL GO AWAY\n";
close($fh);
}
else {
print STDERR "ERROR: Unable to open $output for output\n";
return 1;
}
return 0;
}
sub backup {
my($self, $source, $contents, $append) = @_;
my $status;
my $fh = new FileHandle();
my $backup = "$source.bak";
## Back up the file. While doing so, keep track of the contents of the
## file and keep everything except the old dependencies or keep
## everything if appending.
my $search_string;
if (!$append) {
$search_string = 'DO NOT DELETE';
}
else {
$search_string = 'IF YOU PUT ANYTHING HERE IT WILL GO AWAY';
}
if (open($fh, $source)) {
my $oh = new FileHandle();
if (open($oh, ">$backup")) {
my $record = 1;
$status = 1;
while(<$fh>) {
print $oh $_;
if ($record) {
if (index($_, $search_string) >= 0) {
$record = undef;
}
else {
push(@$contents, $_);
}
}
}
close($oh);
## Set file permission so that the backup has the same permissions
## as the original file.
my @buf = stat($source);
if (defined $buf[8] && defined $buf[9]) {
utime($buf[8], $buf[9], $backup);
}
}
close($fh);
}
return $status;
}
1;
|
