Viewing file:  bun-x.pl (1.22 KB) -rwxr-xr-x
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#! /usr/bin/perl
use CDB_File;
use strict;
sub unnetstrings {
my ($netstrings) = @_;
my @result;
while ( $netstrings =~ s/^([0-9]+):// ) {
push @result, substr( $netstrings, 0, $1, '' );
$netstrings =~ s/^,//;
}
return @result;
}
my $chunk = 8192;
sub extract {
my ( $file, $t, $b ) = @_;
my $head = $$b{"H$file"};
my ( $code, $type ) = $head =~ m/^([0-9]+)(.)/;
if ( $type eq "/" ) {
mkdir $file, 0777;
}
elsif ( $type eq "_" ) {
my ( $total, $now, $got, $x );
open OUT, ">$file" or die "open for output: $!\n";
exists $$b{"D$code"} or die "corrupt bun file\n";
my $fh = $t->handle;
sysseek $fh, $t->datapos, 0;
$total = $t->datalen;
while ($total) {
$now = ( $total > $chunk ) ? $chunk : $total;
$got = sysread $fh, $x, $now;
if ( not $got ) { die "read error\n"; }
$total -= $got;
print OUT $x;
}
close OUT;
}
else {
print STDERR "warning: skipping unknown file type\n";
}
}
die "usage\n" if @ARGV != 1;
my ( %b, $t );
$t = tie %b, 'CDB_File', $ARGV[0] or die "tie: $!\n";
map { extract $_, $t, \%b } unnetstrings $b{""};
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