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[dh-make-perl] / dev / arm / libio-compress-zlib-perl / libio-compress-zlib-perl-2.012 / debian / libio-compress-zlib-perl / usr / share / perl5 / IO / Compress / Zlib / Extra.pm

diff --git a/dev/arm/libio-compress-zlib-perl/libio-compress-zlib-perl-2.012/debian/libio-compress-zlib-perl/usr/share/perl5/IO/Compress/Zlib/Extra.pm b/dev/arm/libio-compress-zlib-perl/libio-compress-zlib-perl-2.012/debian/libio-compress-zlib-perl/usr/share/perl5/IO/Compress/Zlib/Extra.pm
new file mode 100644 (file)
index 0000000..e91824e
--- /dev/null
+++ b/dev/arm/libio-compress-zlib-perl/libio-compress-zlib-perl-2.012/debian/libio-compress-zlib-perl/usr/share/perl5/IO/Compress/Zlib/Extra.pm
@@ -0,0 +1,198 @@
+package IO::Compress::Zlib::Extra;
+
+require 5.004 ;
+
+use strict ;
+use warnings;
+use bytes;
+
+our ($VERSION, @ISA, @EXPORT_OK, %EXPORT_TAGS);
+
+$VERSION = '2.012';
+
+use IO::Compress::Gzip::Constants 2.012 ;
+
+sub ExtraFieldError
+{
+    return $_[0];
+    return "Error with ExtraField Parameter: $_[0]" ;
+}
+
+sub validateExtraFieldPair
+{
+    my $pair = shift ;
+    my $strict = shift;
+    my $gzipMode = shift ;
+
+    return ExtraFieldError("Not an array ref")
+        unless ref $pair &&  ref $pair eq 'ARRAY';
+
+    return ExtraFieldError("SubField must have two parts")
+        unless @$pair == 2 ;
+
+    return ExtraFieldError("SubField ID is a reference")
+        if ref $pair->[0] ;
+
+    return ExtraFieldError("SubField Data is a reference")
+        if ref $pair->[1] ;
+
+    # ID is exactly two chars   
+    return ExtraFieldError("SubField ID not two chars long")
+        unless length $pair->[0] == GZIP_FEXTRA_SUBFIELD_ID_SIZE ;
+
+    # Check that the 2nd byte of the ID isn't 0    
+    return ExtraFieldError("SubField ID 2nd byte is 0x00")
+        if $strict && $gzipMode && substr($pair->[0], 1, 1) eq "\x00" ;
+
+    return ExtraFieldError("SubField Data too long")
+        if length $pair->[1] > GZIP_FEXTRA_SUBFIELD_MAX_SIZE ;
+
+
+    return undef ;
+}
+
+sub parseRawExtra
+{
+    my $data     = shift ;
+    my $extraRef = shift;
+    my $strict   = shift;
+    my $gzipMode = shift ;
+
+    #my $lax = shift ;
+
+    #return undef
+    #    if $lax ;
+
+    my $XLEN = length $data ;
+
+    return ExtraFieldError("Too Large")
+        if $XLEN > GZIP_FEXTRA_MAX_SIZE;
+
+    my $offset = 0 ;
+    while ($offset < $XLEN) {
+
+        return ExtraFieldError("Truncated in FEXTRA Body Section")
+            if $offset + GZIP_FEXTRA_SUBFIELD_HEADER_SIZE  > $XLEN ;
+
+        my $id = substr($data, $offset, GZIP_FEXTRA_SUBFIELD_ID_SIZE);    
+        $offset += GZIP_FEXTRA_SUBFIELD_ID_SIZE;
+
+        my $subLen =  unpack("v", substr($data, $offset,
+                                            GZIP_FEXTRA_SUBFIELD_LEN_SIZE));
+        $offset += GZIP_FEXTRA_SUBFIELD_LEN_SIZE ;
+
+        return ExtraFieldError("Truncated in FEXTRA Body Section")
+            if $offset + $subLen > $XLEN ;
+
+        my $bad = validateExtraFieldPair( [$id, 
+                                           substr($data, $offset, $subLen)], 
+                                           $strict, $gzipMode );
+        return $bad if $bad ;
+        push @$extraRef, [$id => substr($data, $offset, $subLen)]
+            if defined $extraRef;;
+
+        $offset += $subLen ;
+    }
+
+        
+    return undef ;
+}
+
+
+sub mkSubField
+{
+    my $id = shift ;
+    my $data = shift ;
+
+    return $id . pack("v", length $data) . $data ;
+}
+
+sub parseExtraField
+{
+    my $dataRef  = $_[0];
+    my $strict   = $_[1];
+    my $gzipMode = $_[2];
+    #my $lax     = @_ == 2 ? $_[1] : 1;
+
+
+    # ExtraField can be any of
+    #
+    #    -ExtraField => $data
+    #
+    #    -ExtraField => [$id1, $data1,
+    #                    $id2, $data2]
+    #                     ...
+    #                   ]
+    #
+    #    -ExtraField => [ [$id1 => $data1],
+    #                     [$id2 => $data2],
+    #                     ...
+    #                   ]
+    #
+    #    -ExtraField => { $id1 => $data1,
+    #                     $id2 => $data2,
+    #                     ...
+    #                   }
+    
+    if ( ! ref $dataRef ) {
+
+        return undef
+            if ! $strict;
+
+        return parseRawExtra($dataRef, undef, 1, $gzipMode);
+    }
+
+    #my $data = $$dataRef;
+    my $data = $dataRef;
+    my $out = '' ;
+
+    if (ref $data eq 'ARRAY') {    
+        if (ref $data->[0]) {
+
+            foreach my $pair (@$data) {
+                return ExtraFieldError("Not list of lists")
+                    unless ref $pair eq 'ARRAY' ;
+
+                my $bad = validateExtraFieldPair($pair, $strict, $gzipMode) ;
+                return $bad if $bad ;
+
+                $out .= mkSubField(@$pair);
+            }   
+        }   
+        else {
+            return ExtraFieldError("Not even number of elements")
+                unless @$data % 2  == 0;
+
+            for (my $ix = 0; $ix <= length(@$data) -1 ; $ix += 2) {
+                my $bad = validateExtraFieldPair([$data->[$ix],
+                                                  $data->[$ix+1]], 
+                                                 $strict, $gzipMode) ;
+                return $bad if $bad ;
+
+                $out .= mkSubField($data->[$ix], $data->[$ix+1]);
+            }   
+        }
+    }   
+    elsif (ref $data eq 'HASH') {    
+        while (my ($id, $info) = each %$data) {
+            my $bad = validateExtraFieldPair([$id, $info], $strict, $gzipMode);
+            return $bad if $bad ;
+
+            $out .= mkSubField($id, $info);
+        }   
+    }   
+    else {
+        return ExtraFieldError("Not a scalar, array ref or hash ref") ;
+    }
+
+    return ExtraFieldError("Too Large")
+        if length $out > GZIP_FEXTRA_MAX_SIZE;
+
+    $_[0] = $out ;
+
+    return undef;
+}
+
+1;
+
+__END__