| 1 |
296 |
ahitrov |
package Convert::UU; |
| 2 |
|
|
|
| 3 |
|
|
use strict; |
| 4 |
|
|
BEGIN {require 5.004} # m//gc |
| 5 |
|
|
use vars qw($VERSION @ISA @EXPORT_OK); |
| 6 |
|
|
use Carp 'croak'; |
| 7 |
|
|
|
| 8 |
|
|
require Exporter; |
| 9 |
|
|
|
| 10 |
|
|
@ISA = qw(Exporter); |
| 11 |
|
|
# Items to export into callers namespace by default. Note: do not export |
| 12 |
|
|
# names by default without a very good reason. Use EXPORT_OK instead. |
| 13 |
|
|
# Do not simply export all your public functions/methods/constants. |
| 14 |
|
|
@EXPORT_OK = qw( |
| 15 |
|
|
uudecode uuencode |
| 16 |
|
|
); |
| 17 |
|
|
$VERSION = '0.52'; |
| 18 |
|
|
|
| 19 |
|
|
# |
| 20 |
|
|
# From comp.lang.perl 3/1/95. |
| 21 |
|
|
# Posted by Hans Mulder (hansm@wsinti05.win.tue.nl) |
| 22 |
|
|
# |
| 23 |
|
|
|
| 24 |
|
|
sub uuencode { |
| 25 |
|
|
croak("Usage: uuencode( {string|filehandle} [,filename] [, mode] )") |
| 26 |
|
|
unless(@_ >= 1 && @_ <= 3); |
| 27 |
|
|
|
| 28 |
|
|
my($in,$file,$mode) = @_; |
| 29 |
|
|
$mode ||= "644"; |
| 30 |
|
|
$file ||= "uuencode.uu"; |
| 31 |
|
|
|
| 32 |
|
|
my($chunk,@result,$r); |
| 33 |
|
|
if ( |
| 34 |
|
|
ref($in) eq 'IO::Handle' or |
| 35 |
|
|
ref(\$in) eq "GLOB" or |
| 36 |
|
|
ref($in) eq "GLOB" or |
| 37 |
|
|
ref($in) eq 'FileHandle' |
| 38 |
|
|
) { |
| 39 |
|
|
# local $^W = 0; # Why did I get use of undefined value here ? |
| 40 |
|
|
binmode($in); |
| 41 |
|
|
local $/; |
| 42 |
|
|
$in = <$in>; |
| 43 |
|
|
} |
| 44 |
|
|
pos($in)=0; |
| 45 |
|
|
while ($in =~ m/\G(.{1,45})/sgc) { |
| 46 |
|
|
push @result, uuencode_chunk($1); |
| 47 |
|
|
} |
| 48 |
|
|
push @result, "`\n"; |
| 49 |
|
|
join "", "begin $mode $file\n", @result, "end\n"; |
| 50 |
|
|
} |
| 51 |
|
|
|
| 52 |
|
|
sub uuencode_chunk { |
| 53 |
|
|
my($string) = shift; |
| 54 |
|
|
# for the Mac? |
| 55 |
|
|
# my($mod3) = length($string) % 3; |
| 56 |
|
|
# $string .= "\0", $mod3 -= 3 if $mod3; |
| 57 |
|
|
my $encoded_string = pack("u", $string); # unix uuencode |
| 58 |
|
|
# for the Mac? |
| 59 |
|
|
# $encoded_string =~ s/.//; # remove length byte |
| 60 |
|
|
# chop($encoded_string); # remove trailing \n |
| 61 |
|
|
# $encoded_string =~ tr#`!-_#A-Za-z0-9+/#; # tr to mime alphabet |
| 62 |
|
|
# substr($encoded_string, $mod3) =~ tr/A/=/; # adjust padding |
| 63 |
|
|
$encoded_string; |
| 64 |
|
|
} |
| 65 |
|
|
|
| 66 |
|
|
sub uudecode { |
| 67 |
|
|
croak("Usage: uudecode( {string|filehandle|array ref}) ") |
| 68 |
|
|
unless(@_ == 1); |
| 69 |
|
|
my($in) = @_; |
| 70 |
|
|
|
| 71 |
|
|
my(@result,$file,$mode); |
| 72 |
|
|
$mode = $file = ""; |
| 73 |
|
|
if ( |
| 74 |
|
|
ref($in) eq 'IO::Handle' or |
| 75 |
|
|
ref(\$in) eq "GLOB" or |
| 76 |
|
|
ref($in) eq "GLOB" or |
| 77 |
|
|
ref($in) eq 'FileHandle' |
| 78 |
|
|
) { |
| 79 |
|
|
local($\) = "\n"; |
| 80 |
|
|
binmode($in); |
| 81 |
|
|
while (<$in>) { |
| 82 |
|
|
if ($file eq "" and !$mode){ |
| 83 |
|
|
($mode,$file) = ($1, $2) if /^begin\s+(\d+)\s+(.+)$/ ; |
| 84 |
|
|
next; |
| 85 |
|
|
} |
| 86 |
|
|
last if /^end/; |
| 87 |
|
|
push @result, uudecode_chunk($_); |
| 88 |
|
|
} |
| 89 |
|
|
} elsif (ref(\$in) eq "SCALAR") { |
| 90 |
|
|
while ($in =~ m/\G(.*?(\n|\r|\r\n|\n\r))/gc) { |
| 91 |
|
|
my $line = $1; |
| 92 |
|
|
if ($file eq "" and !$mode){ |
| 93 |
|
|
($mode,$file) = $line =~ /^begin\s+(\d+)\s+(.+)$/ ; |
| 94 |
|
|
next; |
| 95 |
|
|
} |
| 96 |
|
|
next if $file eq "" and !$mode; |
| 97 |
|
|
last if $line =~ /^end/; |
| 98 |
|
|
push @result, uudecode_chunk($line); |
| 99 |
|
|
} |
| 100 |
|
|
} elsif (ref($in) eq "ARRAY") { |
| 101 |
|
|
my $line; |
| 102 |
|
|
foreach $line (@$in) { |
| 103 |
|
|
if ($file eq "" and !$mode){ |
| 104 |
|
|
($mode,$file) = $line =~ /^begin\s+(\d+)\s+(.+)$/ ; |
| 105 |
|
|
next; |
| 106 |
|
|
} |
| 107 |
|
|
next if $file eq "" and !$mode; |
| 108 |
|
|
last if $line =~ /^end/; |
| 109 |
|
|
push @result, uudecode_chunk($line); |
| 110 |
|
|
} |
| 111 |
|
|
} |
| 112 |
|
|
wantarray ? (join("",@result),$file,$mode) : join("",@result); |
| 113 |
|
|
} |
| 114 |
|
|
|
| 115 |
|
|
sub uudecode_chunk { |
| 116 |
|
|
my($chunk) = @_; |
| 117 |
|
|
# return "" if $chunk =~ /^(--|\#|CREATED)/; # the "#" was an evil |
| 118 |
|
|
# bug: a "#" in column |
| 119 |
|
|
# one is legal! |
| 120 |
|
|
return "" if $chunk =~ /^(?:--|CREATED)/; |
| 121 |
|
|
my $string = substr($chunk,0,int((((ord($chunk) - 32) & 077) + 2) / 3)*4+1); |
| 122 |
|
|
# warn "DEBUG: string [$string]"; |
| 123 |
|
|
# my $return = unpack("u", $string); |
| 124 |
|
|
# warn "DEBUG: return [$return]"; |
| 125 |
|
|
# $return; |
| 126 |
|
|
|
| 127 |
|
|
my $ret = unpack("u", $string); |
| 128 |
|
|
defined $ret ? $ret : ""; |
| 129 |
|
|
} |
| 130 |
|
|
|
| 131 |
|
|
1; |
| 132 |
|
|
|
| 133 |
|
|
__END__ |
| 134 |
|
|
|
| 135 |
|
|
=head1 NAME |
| 136 |
|
|
|
| 137 |
|
|
Convert::UU, uuencode, uudecode - Perl module for uuencode and uudecode |
| 138 |
|
|
|
| 139 |
|
|
=head1 SYNOPSIS |
| 140 |
|
|
|
| 141 |
|
|
use Convert::UU qw(uudecode uuencode); |
| 142 |
|
|
$encoded_string = uuencode($string,[$filename],[$mode]); |
| 143 |
|
|
($string,$filename,$mode) = uudecode($string); |
| 144 |
|
|
$string = uudecode($string); # in scalar context |
| 145 |
|
|
|
| 146 |
|
|
=head1 DESCRIPTION |
| 147 |
|
|
|
| 148 |
|
|
uuencode() takes as the first argument a string that is to be |
| 149 |
|
|
uuencoded. Note, that it is the string that is encoded, not a |
| 150 |
|
|
filename. Alternatively a filehandle may be passed that must be opened |
| 151 |
|
|
for reading. It returns the uuencoded string including C<begin> and |
| 152 |
|
|
C<end>. Second and third argument are optional and specify filename and |
| 153 |
|
|
mode. If unspecified these default to "uuencode.uu" and 644. |
| 154 |
|
|
|
| 155 |
|
|
uudecode() takes a string as argument which will be uudecoded. If the |
| 156 |
|
|
argument is a filehandle this handle will be read instead. If it is a |
| 157 |
|
|
reference to an ARRAY, the elements are treated like lines that form a |
| 158 |
|
|
string. Leading and trailing garbage will be ignored. The function |
| 159 |
|
|
returns the uudecoded string for the first begin/end pair. In array |
| 160 |
|
|
context it returns an array whose first element is the uudecoded |
| 161 |
|
|
string, the second is the filename and the third is the mode. |
| 162 |
|
|
|
| 163 |
|
|
=head1 EXPORT |
| 164 |
|
|
|
| 165 |
|
|
Both uudecode and uuencode are in @EXPORT_OK. |
| 166 |
|
|
|
| 167 |
|
|
=head1 AUTHOR |
| 168 |
|
|
|
| 169 |
|
|
Andreas Koenig E<lt>andreas.koenig@anima.deE<gt>. With code integrated |
| 170 |
|
|
that was posted to USENET from Hans Mulder and Randal L. Schwartz. |
| 171 |
|
|
|
| 172 |
|
|
=head1 SEE ALSO |
| 173 |
|
|
|
| 174 |
|
|
puuencode(1), puudecode(1) for examples of how to use this module. |
| 175 |
|
|
|
| 176 |
|
|
=cut |
