X-Git-Url: https://perl5.git.perl.org/perl5.git/blobdiff_plain/c23ee15d0c5621f673a78a873392c506a2b470f8..4737eb086461114557478cd96ef0b839db56baf0:/cpan/IO-Compress/lib/IO/Uncompress/Adapter/Identity.pm

diff --git a/cpan/IO-Compress/lib/IO/Uncompress/Adapter/Identity.pm b/cpan/IO-Compress/lib/IO/Uncompress/Adapter/Identity.pm
index 879a7f6..84d74c9 100644
--- a/cpan/IO-Compress/lib/IO/Uncompress/Adapter/Identity.pm
+++ b/cpan/IO-Compress/lib/IO/Uncompress/Adapter/Identity.pm
@@ -4,47 +4,131 @@ use warnings;
 use strict;
 use bytes;
 
-use IO::Compress::Base::Common  2.035 qw(:Status);
+use IO::Compress::Base::Common  2.096 qw(:Status);
+use IO::Compress::Zip::Constants ;
 
 our ($VERSION);
 
-$VERSION = '2.035';
+$VERSION = '2.096';
 
-use Compress::Raw::Zlib  2.035 ();
+use Compress::Raw::Zlib  2.096 ();
 
 sub mkUncompObject
 {
+    my $streaming = shift;
+    my $zip64 = shift;
+
     my $crc32 = 1; #shift ;
     my $adler32 = shift;
 
-    bless { 'CompSize'   => 0,
+    bless { 'CompSize'   => new U64 , # 0,
             'UnCompSize' => 0,
             'wantCRC32'  => $crc32,
             'CRC32'      => Compress::Raw::Zlib::crc32(''),
             'wantADLER32'=> $adler32,
             'ADLER32'    => Compress::Raw::Zlib::adler32(''),
             'ConsumesInput' => 1,
+            'Streaming'  => $streaming,
+            'Zip64'      => $zip64,
+            'DataHdrSize'  => $zip64 ? 24 :  16,
+            'Pending'   => '',
 
           } ;
 }
 
+
 sub uncompr
 {
     my $self = shift;
+    my $in = $_[0];
     my $eof = $_[2];
 
-    if (defined ${ $_[0] } && length ${ $_[0] }) {
-        $self->{CompSize} += length ${ $_[0] } ;
-        $self->{UnCompSize} = $self->{CompSize} ;
-
-        $self->{CRC32} = Compress::Raw::Zlib::crc32($_[0],  $self->{CRC32})
-            if $self->{wantCRC32};
-
-        $self->{ADLER32} = Compress::Zlib::adler32($_[0],  $self->{ADLER32})
-            if $self->{wantADLER32};
-
-        ${ $_[1] } .= ${ $_[0] };
-        ${ $_[0] } = "";
+    my $len = length $$in;
+    my $remainder = '';
+
+    if (defined $$in && $len) {
+
+        if ($self->{Streaming}) {
+
+            if (length $self->{Pending}) {
+                $$in = $self->{Pending} . $$in ;
+                $len = length $$in;
+                $self->{Pending} = '';
+            }
+
+            my $ind = index($$in, "\x50\x4b\x07\x08");
+
+            if ($ind < 0) {
+                $len = length $$in;
+                if ($len >= 3 && substr($$in, -3) eq "\x50\x4b\x07") {
+                    $ind = $len - 3 ;
+                }
+                elsif ($len >= 2 && substr($$in, -2) eq "\x50\x4b") {
+                    $ind = $len - 2 ;
+                }
+                elsif ($len >= 1 && substr($$in, -1) eq "\x50") {
+                    $ind = $len - 1 ;
+                }
+            }
+           
+            if ($ind >= 0) {
+                $remainder = substr($$in, $ind) ;
+                substr($$in, $ind) = '' ;
+            }
+        }
+
+        if (length $remainder && length $remainder < $self->{DataHdrSize}) {
+            $self->{Pending} = $remainder ;
+            $remainder = '';
+        }
+        elsif (length $remainder >= $self->{DataHdrSize}) {
+            my $crc = unpack "V", substr($remainder, 4);
+            if ($crc == Compress::Raw::Zlib::crc32($$in,  $self->{CRC32})) {
+                my ($l1, $l2) ;
+
+                if ($self->{Zip64}) {
+                    $l1 = U64::newUnpack_V64(substr($remainder, 8));
+                    $l2 = U64::newUnpack_V64(substr($remainder, 16));
+                }
+                else {
+                    $l1 = U64::newUnpack_V32(substr($remainder, 8));
+                    $l2 = U64::newUnpack_V32(substr($remainder, 12));
+                }
+                    
+                my $newLen = $self->{CompSize}->clone();
+                $newLen->add(length $$in);
+                if ($l1->equal($l2) && $l1->equal($newLen) ) {
+                    $eof = 1;
+                }
+                else {
+                    $$in .= substr($remainder, 0, 4) ;
+                    $remainder       = substr($remainder, 4);
+                    #$self->{Pending} = substr($remainder, 4);
+                    #$remainder = '';
+                    $eof = 0;
+                }
+            }
+            else {
+                $$in .= substr($remainder, 0, 4) ;
+                $remainder       = substr($remainder, 4);
+                #$self->{Pending} = substr($remainder, 4);
+                #$remainder = '';
+                $eof = 0;
+            }
+        }
+
+        if (length $$in) {
+            $self->{CompSize}->add(length $$in) ;
+
+            $self->{CRC32} = Compress::Raw::Zlib::crc32($$in,  $self->{CRC32})
+                if $self->{wantCRC32};
+
+            $self->{ADLER32} = Compress::Zlib::adler32($$in,  $self->{ADLER32})
+                if $self->{wantADLER32};
+        }
+
+        ${ $_[1] } .= $$in;
+        $$in  = $remainder;
     }
 
     return STATUS_ENDSTREAM if $eof;
@@ -55,7 +139,7 @@ sub reset
 {
     my $self = shift;
 
-    $self->{CompSize}   = 0;
+    $self->{CompSize}->reset();
     $self->{UnCompSize} = 0;
     $self->{CRC32}      = Compress::Raw::Zlib::crc32('');
     $self->{ADLER32}    = Compress::Raw::Zlib::adler32('');      
@@ -63,7 +147,6 @@ sub reset
     return STATUS_OK ;
 }
 
-
 #sub count
 #{
 #    my $self = shift ;
@@ -73,13 +156,13 @@ sub reset
 sub compressedBytes
 {
     my $self = shift ;
-    return $self->{UnCompSize} ;
+    return $self->{CompSize} ;
 }
 
 sub uncompressedBytes
 {
     my $self = shift ;
-    return $self->{UnCompSize} ;
+    return $self->{CompSize} ;
 }
 
 sub sync