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package DependencyEditor;
# ************************************************************
# Description : Edits existing dependencies.
# Author : Chad Elliott
# Create Date : 2/10/2002
# ************************************************************
# ************************************************************
# Pragmas
# ************************************************************
use strict;
use FileHandle;
use File::Basename;
use DependencyGenerator;
use ObjectGeneratorFactory;
# ************************************************************
# Subroutine Section
# ************************************************************
sub new {
return bless {
}, $_[0];
}
sub process {
my($self) = shift;
my($output) = shift;
my($type) = shift;
my($noinline) = shift;
my($macros) = shift;
my($ipaths) = shift;
my($replace) = shift;
my($files) = shift;
## Back up the original file and receive the contents
my($contents) = undef;
if (-s $output) {
$contents = [];
if (!$self->backup($output, $contents)) {
print STDERR "ERROR: Unable to backup $output\n";
return 1;
}
}
## Write out the new file
my($fh) = new FileHandle();
if (open($fh, ">$output")) {
if (defined $contents) {
foreach my $line (@$contents) {
if ($line =~ /DO NOT DELETE/) {
last;
}
print $fh $line;
}
}
print $fh "# DO NOT DELETE THIS LINE -- " . basename($0) . " uses it.\n" .
"# DO NOT PUT ANYTHING AFTER THIS LINE, IT WILL GO AWAY.\n\n";
my($dep) = new DependencyGenerator($macros, $ipaths,
$replace, $type, $noinline);
my($objgen) = ObjectGeneratorFactory::create($type);
## Sort the files so the dependencies are reproducible
foreach my $file (sort @$files) {
my(@objects) = $objgen->process($file);
print $fh $dep->process($file, \@objects) . "\n";
}
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) = shift;
my($source) = shift;
my($contents) = shift;
my($status) = 0;
my($fh) = new FileHandle();
my($backup) = "$source.bak";
if (open($fh, $source)) {
my($oh) = new FileHandle();
if (open($oh, ">$backup")) {
$status = 1;
while(<$fh>) {
print $oh $_;
push(@$contents, $_);
}
close($oh);
## Set file permission
my(@buf) = stat($source);
if (defined $buf[8] && defined $buf[9]) {
utime($buf[8], $buf[9], $backup);
}
}
close($fh);
}
return $status;
}
1;
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