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|
#!perl
use strict;
use warnings;
use Getopt::Long;
use File::Basename;
use File::Spec;
BEGIN {
if ($^O eq 'VMS') {
require VMS::Filespec;
import VMS::Filespec;
}
}
Getopt::Long::Configure('no_ignore_case');
our $LastUpdate = -M $0;
sub handle_file {
my $opts = shift;
my $file = shift or die "Need file\n". usage();
my $outfile = shift || '';
$file = vms_check_name($file) if $^O eq 'VMS';
my $mode = (stat($file))[2] & 07777;
open my $fh, "<", $file
or do { warn "Could not open input file $file: $!"; exit 0 };
binmode $fh;
my $str = do { local $/; <$fh> };
### unpack?
my $outstr;
if( $opts->{u} ) {
if( !$outfile ) {
$outfile = $file;
$outfile =~ s/\.packed\z//;
}
my ($head, $body) = split /__UU__\n/, $str;
die "Can't unpack malformed data in '$file'\n"
if !$head;
$outstr = unpack 'u', $body;
} else {
$outfile ||= $file . '.packed';
my $me = basename($0);
$outstr = <<"EOFBLURB" . pack 'u', $str;
#########################################################################
This is a binary file that was packed with the 'uupacktool.pl' which
is included in the Perl distribution.
To unpack this file use the following command:
$me -u $outfile $file
To recreate it use the following command:
$me -p $file $outfile
Created at @{[scalar localtime]}
#########################################################################
__UU__
EOFBLURB
}
### output the file
if( $opts->{'s'} ) {
print STDOUT $outstr;
} else {
$outfile = VMS::Filespec::vmsify($outfile) if $^O eq 'VMS';
print "Writing $file into $outfile\n" if $opts->{'v'};
open my $outfh, ">", $outfile
or do { warn "Could not open $outfile for writing: $!"; exit 0 };
binmode $outfh;
### $outstr might be empty, if the file was empty
print $outfh $outstr if $outstr;
close $outfh;
chmod $mode, $outfile;
}
### delete source file?
if( $opts->{'D'} and $file ne $outfile ) {
1 while unlink $file;
}
}
sub bulk_process {
my $opts = shift;
my $Manifest = $opts->{'m'};
open my $fh, "<", $Manifest or die "Could not open '$Manifest':$!";
print "Reading $Manifest\n"
if $opts->{'v'};
my $count = 0;
my $lines = 0;
while( my $line = <$fh> ) {
chomp $line;
my ($file) = split /\s+/, $line;
$lines++;
next unless $file =~ /\.packed/;
$count++;
my $out = $file;
$out =~ s/\.packed\z//;
$out = vms_check_name($out) if $^O eq 'VMS';
### unpack
if( !$opts->{'c'} ) {
( $out, $file ) = ( $file, $out ) if $opts->{'p'};
if (-e $out) {
my $changed = -M _;
if ($changed < $LastUpdate and $changed < -M $file) {
print "Skipping '$file' as '$out' is up-to-date.\n"
if $opts->{'v'};
next;
}
}
handle_file($opts, $file, $out);
print "Converted '$file' to '$out'\n"
if $opts->{'v'};
### clean up
} else {
### file exists?
unless( -e $out ) {
print "File '$file' was not unpacked into '$out'. Can not remove.\n";
### remove it
} else {
print "Removing '$out'\n";
1 while unlink $out;
}
}
}
print "Found $count files to process out of $lines in '$Manifest'\n"
if $opts->{'v'};
}
sub usage {
return qq[
Usage: $^X $0 [-d dir] [-v] [-c] [-D] -p|-u [orig [packed|-s] | -m [manifest]]
Handle binary files in source tree. Can be used to pack or
unpack files individiually or as specified by a manifest file.
Options:
-u Unpack files (defaults to -u unless -p is specified)
-p Pack files
-c Clean up all unpacked files. Implies -m
-D Delete source file after encoding/decoding
-s Output to STDOUT rather than OUTPUT_FILE
-m Use manifest file, if none is explicitly provided defaults to 'MANIFEST'
-d Change directory to dir before processing
-v Run verbosely
-h Display this help message
];
}
sub vms_check_name {
# Packed files tend to have multiple dots, which the CRTL may or may not handle
# properly, so convert to native format. And depending on how the archive was
# unpacked, foo.bar.baz may be foo_bar.baz or foo.bar_baz. N.B. This checks for
# existence, so is not suitable as-is to generate ODS-2-safe names in preparation
# for file creation.
my $file = shift;
$file = VMS::Filespec::vmsify($file);
return $file if -e $file;
my ($vol,$dirs,$base) = File::Spec->splitpath($file);
my $tmp = $base;
1 while $tmp =~ s/([^\.]+)\.(.+\..+)/$1_$2/;
my $try = File::Spec->catpath($vol, $dirs, $tmp);
return $try if -e $try;
$tmp = $base;
1 while $tmp =~ s/(.+\..+)\.([^\.]+)/$1_$2/;
$try = File::Spec->catpath($vol, $dirs, $tmp);
return $try if -e $try;
return $file;
}
my $opts = {};
GetOptions($opts,'u','p','c', 'D', 'm:s','s','d=s','v','h');
die "Can't pack and unpack at the same time!\n", usage()
if $opts->{'u'} && $opts->{'p'};
die usage() if $opts->{'h'};
if ( $opts->{'d'} ) {
chdir $opts->{'d'}
or die "Failed to chdir to '$opts->{'d'}':$!";
}
$opts->{'u'} = 1 if !$opts->{'p'};
binmode STDOUT if $opts->{'s'};
if ( exists $opts->{'m'} or exists $opts->{'c'} ) {
$opts->{'m'} ||= "MANIFEST";
bulk_process($opts);
exit(0);
} else {
if (@ARGV) {
handle_file($opts, @ARGV);
} else {
die "No file to process specified!\n", usage();
}
exit(0);
}
die usage();
|
