79 lines
1.3 KiB
Perl
Executable File
79 lines
1.3 KiB
Perl
Executable File
#!/usr/local/bin/perl
|
|
|
|
use strict;
|
|
|
|
use Fcntl;
|
|
|
|
# copy-if-different.pl
|
|
|
|
# Copy to the destination if the source is not the same as it.
|
|
|
|
my @filelist;
|
|
|
|
foreach my $arg (@ARGV) {
|
|
$arg =~ s|\\|/|g; # compensate for bug/feature in cygwin glob...
|
|
foreach (glob $arg)
|
|
{
|
|
push @filelist, $_;
|
|
}
|
|
}
|
|
|
|
my $fnum = @filelist;
|
|
|
|
if ($fnum <= 1)
|
|
{
|
|
die "Need at least two filenames";
|
|
}
|
|
|
|
my $dest = pop @filelist;
|
|
|
|
if ($fnum > 2 && ! -d $dest)
|
|
{
|
|
die "Destination must be a directory";
|
|
}
|
|
|
|
foreach (@filelist)
|
|
{
|
|
my $dfile;
|
|
if (-d $dest)
|
|
{
|
|
$dfile = $_;
|
|
$dfile =~ s|^.*[/\\]([^/\\]*)$|$1|;
|
|
$dfile = "$dest/$dfile";
|
|
}
|
|
else
|
|
{
|
|
$dfile = $dest;
|
|
}
|
|
|
|
my $buf;
|
|
if (-f $dfile)
|
|
{
|
|
sysopen(IN, $_, O_RDONLY|O_BINARY) || die "Can't Open $_";
|
|
sysopen(OUT, $dfile, O_RDONLY|O_BINARY)
|
|
|| die "Can't Open $dfile";
|
|
while (sysread IN, $buf, 10240)
|
|
{
|
|
my $b2;
|
|
goto copy if !sysread(OUT, $b2, 10240) || $buf ne $b2;
|
|
}
|
|
goto copy if sysread(OUT, $buf, 1);
|
|
close(IN);
|
|
close(OUT);
|
|
print "NOT copying: $_ to $dfile\n";
|
|
next;
|
|
}
|
|
copy:
|
|
sysopen(IN, $_, O_RDONLY|O_BINARY) || die "Can't Open $_";
|
|
sysopen(OUT, $dfile, O_WRONLY|O_CREAT|O_TRUNC|O_BINARY)
|
|
|| die "Can't Open $dfile";
|
|
while (sysread IN, $buf, 10240)
|
|
{
|
|
syswrite(OUT, $buf, length($buf));
|
|
}
|
|
close(IN);
|
|
close(OUT);
|
|
print "Copying: $_ to $dfile\n";
|
|
}
|
|
|