Initial Commit

database/perl/vendor/lib/Crypt/Checksum.pm

@@ -0,0 +1,69 @@
+package Crypt::Checksum;
+
+use strict;
+use warnings;
+our $VERSION = '0.069';
+
+require Exporter; our @ISA = qw(Exporter); ### use Exporter 5.57 'import';
+our %EXPORT_TAGS = ( all => [qw/ adler32_data adler32_data_hex adler32_data_int adler32_file adler32_file_hex adler32_file_int
+                                 crc32_data crc32_data_hex crc32_data_int crc32_file crc32_file_hex crc32_file_int /] );
+our @EXPORT_OK = ( @{ $EXPORT_TAGS{'all'} } );
+our @EXPORT = qw();
+
+use Carp;
+$Carp::Internal{(__PACKAGE__)}++;
+
+# obsolete since v0.057, only for backwards compatibility
+use Crypt::Checksum::CRC32;
+use Crypt::Checksum::Adler32;
+sub adler32_data        { goto \&Crypt::Checksum::Adler32::adler32_data     }
+sub adler32_data_hex    { goto \&Crypt::Checksum::Adler32::adler32_data_hex }
+sub adler32_data_int    { goto \&Crypt::Checksum::Adler32::adler32_data_int }
+sub adler32_file        { goto \&Crypt::Checksum::Adler32::adler32_file     }
+sub adler32_file_hex    { goto \&Crypt::Checksum::Adler32::adler32_file_hex }
+sub adler32_file_int    { goto \&Crypt::Checksum::Adler32::adler32_file_int }
+sub crc32_data          { goto \&Crypt::Checksum::CRC32::crc32_data     }
+sub crc32_data_hex      { goto \&Crypt::Checksum::CRC32::crc32_data_hex }
+sub crc32_data_int      { goto \&Crypt::Checksum::CRC32::crc32_data_int }
+sub crc32_file          { goto \&Crypt::Checksum::CRC32::crc32_file     }
+sub crc32_file_hex      { goto \&Crypt::Checksum::CRC32::crc32_file_hex }
+sub crc32_file_int      { goto \&Crypt::Checksum::CRC32::crc32_file_int }
+
+sub addfile {
+  my ($self, $file) = @_;
+
+  my $handle;
+  if (ref(\$file) eq 'SCALAR') {        #filename
+    open($handle, "<", $file) || croak "FATAL: cannot open '$file': $!";
+    binmode($handle);
+  }
+  else {                                #handle
+    $handle = $file
+  }
+  croak "FATAL: invalid handle" unless defined $handle;
+
+  my $n;
+  my $buf = "";
+  while (($n = read($handle, $buf, 32*1024))) {
+    $self->add($buf)
+  }
+  croak "FATAL: read failed: $!" unless defined $n;
+
+  return $self;
+}
+
+sub CLONE_SKIP { 1 } # prevent cloning
+
+1;
+
+=pod
+
+=head1 NAME
+
+Crypt::Checksum - [internal only]
+
+=head1 DESCRIPTION
+
+You are probably looking for L<Crypt::Checksum::CRC32> or L<Crypt::Checksum::Adler32>.
+
+=cut