[ViewVC] Diff of: cvs/Convert-UUlib/UUlib.pm

Comparing Convert-UUlib/UUlib.pm (file contents):
Revision 1.38 by root, Wed Sep 16 18:10:18 2009 UTC vs.
Revision 1.47 by root, Fri Feb 28 16:57:25 2020 UTC

 use Carp;
 require Exporter;
 require DynaLoader;
-our $VERSION = '1.32';
+our $VERSION = 1.62;
 our @ISA = qw(Exporter DynaLoader);
 our @_consts = qw(
 	ACT_COPYING ACT_DECODING ACT_ENCODING ACT_IDLE ACT_SCANNING
 );
 our @_funcs = qw(
         Initialize CleanUp GetOption SetOption strerror SetMsgCallback
         SetBusyCallback SetFileCallback SetFNameFilter SetFileNameCallback
-        FNameFilter LoadFile GetFileListItem RenameFile DecodeToTemp
+        FNameFilter LoadFile GetFileListItem GetFileList RenameFile DecodeToTemp
         RemoveTemp DecodeFile InfoFile Smerge QuickDecode EncodeMulti
         EncodePartial EncodeToStream EncodeToFile E_PrepSingle
         E_PrepPartial
         straction strencoding strmsglevel
  use Convert::UUlib ':all';
  # read all the files named on the commandline and decode them
  # into the CURRENT directory. See below for a longer example.
  LoadFile $_ for @ARGV;
- for (my $i = 0; my $uu = GetFileListItem $i; $i++) {
+ for my $uu (GetFileList) {
     if ($uu->state & FILE_OK) {
       $uu->decode;
       print $uu->filename, "\n";
     }
  }
 again.
 On my machine, a fairly complete decode with DBI backend needs about 10MB
 RSS to decode 20000 files.
-=over 4
+=over
 =item Initialize
 Not normally necessary, (re-)initializes the library.
 =back
 =head2 Setting and querying options
-=over 4
+=over
 =item $option = GetOption OPT_xxx
 =item SetOption OPT_xxx, opt-value
 See the C<OPT_xxx> constants above to see which options exist.
 =head2 Setting various callbacks
-=over 4
+=over
 =item SetMsgCallback [callback-function]
 =item SetBusyCallback [callback-function]
 =back
 =head2 Call the currently selected FNameFilter
-=over 4
+=over
 =item $file = FNameFilter $file
 =back
 =head2 Loading sourcefiles, optionally fuzzy merge and start decoding
-=over 4
+=over
 =item ($retval, $count) = LoadFile $fname, [$id, [$delflag, [$partno]]]
 Load the given file and scan it for encoded contents. Optionally tag it
 with the given id, and if C<$delflag> is true, delete the file after it
 The first file has number C<0>, and the series has no holes, so you can
 iterate over all files by starting with zero and incrementing until you
 hit C<undef>.
+This function has to walk the linear list of fils on each access, so
+if you want to iterate over all items, it is usually faster to use
+C<GetFileList>.
+=item @items = GetFileList
+Similar to C<GetFileListItem>, but returns all files in one go.
 =back
 =head2 Decoding files
-=over 4
+=over
-=item $retval = $item->rename($newname)
+=item $retval = $item->rename ($newname)
 Change the ondisk filename where the decoded file will be saved.
 =item $retval = $item->decode_temp
 =item $retval = $item->remove_temp
 Remove the temporarily decoded file again.
-=item $retval = $item->decode([$target_path])
+=item $retval = $item->decode ([$target_path])
-Decode the file to it's destination, or the given target path.
+Decode the file to its destination, or the given target path.
-=item $retval = $item->info(callback-function)
+=item $retval = $item->info (callback-function)
 =back
 =head2 Querying (and setting) item attributes
-=over 4
+=over
 =item $state    = $item->state
-=item $mode     = $item->mode([newmode])
+=item $mode     = $item->mode ([newmode])
 =item $uudet    = $item->uudet
 =item $size     = $item->size
-=item $filename = $item->filename([newfilename})
+=item $filename = $item->filename ([newfilename})
 =item $subfname = $item->subfname
 =item $mimeid   = $item->mimeid
 =back
 =head2 Information about source parts
-=over 4
+=over
 =item $parts = $item->parts
 Return information about all parts (source files) used to decode the file
 as a list of hashrefs with the following structure:
 Usually you are interested mostly the C<sfname> and possibly the C<partno>
 and C<filename> members.
 =back
-=head2 Functions below not documented and not very well tested
+=head2 Functions below are not documented and not very well tested - feedback welcome
   QuickDecode
   EncodeMulti
   EncodePartial
   EncodeToStream
 =head2 EXTENSION FUNCTIONS
 Functions found in this module but not documented in the uulib documentation:
-=over 4
+=over
 =item $msg = straction ACT_xxx
 Return a human readable string representing the given action code.
       # otherwise just pass what we have
       ()
    };
    # now read all files in the directory uusrc/*
-   for(<uusrc/*>) {
+   for (<uusrc/*>) {
       my ($retval, $count) = LoadFile ($_, $_, 1);
       print "file($_), status(", strerror $retval, ") parts($count)\n";
    }
    SetOption OPT_SAVEPATH, "uudst/";
    # now wade through all files and their source parts
-   $i = 0;
+   for my $uu (GetFileList) {
-   while ($uu = GetFileListItem $i) {
+      print "file ", $uu->filename, "\n";
-      $i++;
-      print "file nr. $i";
-      print " state ", $uu->state;
+      print " state ", $uu->state, "\n";
-      print " mode ", $uu->mode;
+      print " mode ", $uu->mode, "\n";
-      print " uudet ", strencoding $uu->uudet;
+      print " uudet ", strencoding $uu->uudet, "\n";
-      print " size ", $uu->size;
+      print " size ", $uu->size, "\n";
-      print " filename ", $uu->filename;
-      print " subfname ", $uu->subfname;
+      print " subfname ", $uu->subfname, "\n";
-      print " mimeid ", $uu->mimeid;
+      print " mimeid ", $uu->mimeid, "\n";
-      print " mimetype ", $uu->mimetype;
+      print " mimetype ", $uu->mimetype, "\n";
-      print "\n";
       # print additional info about all parts
+      print " parts";
       for ($uu->parts) {
-         while (my ($k, $v) = each %$_) {
+         for my $k (sort keys %$_) {
-            print "$k > $v, ";
+            print " $k=$_->{$k}";
          }
          print "\n";
       }
-      print $uu->filename;
       $uu->remove_temp;
-      if (my $err = $uu->decode ()) {
+      if (my $err = $uu->decode) {
-         print ", ", strerror $err, "\n";
+         print " ERROR ", strerror $err, "\n";
       } else {
-         print ", saved as uudst/", $uu->filename, "\n";
+         print " successfully saved as uudst/", $uu->filename, "\n";
       }
    }
    print "cleanup...\n";
    CleanUp;
+=head1 PERLMULTICORE SUPPORT
+This module supports the perlmulticore standard (see
+L<http://perlmulticore.schmorp.de/> for more info) for the following
+functions - generally these are functions accessing the disk and/or using
+considerable CPU time:
+   LoadFile
+   $item->decode
+   $item->decode_temp
+   $item->remove_temp
+   $item->info
+The perl interpreter will be reacquired/released on every callback
+invocation, so for performance reasons, callbacks should be avoided if
+that is costly.
+Future versions might enable multicore support for more functions.
+=head1 BUGS AND LIMITATIONS
+The original uulib library this module uses was written at a time where
+main memory of measured in megabytes and buffer overflows as a security
+thign didn't exist. While a lot of security fixes have been applied over
+the years (includign some defense in depth mechanism that can shield
+against a lot of as-of-yet undetected bugs), using this library for
+security purposes requires care.
+Likewise, file sizes when the uulib library was written were tiny compared
+to today, so do not expect this library to handle files larger than 2GB.
 =head1 AUTHOR
 Marc Lehmann <schmorp@schmorp.de>, the original uulib library was written
 by Frank Pilhofer <fp@informatik.uni-frankfurt.de>, and later heavily
 bugfixed by Marc Lehmann.
 =head1 SEE ALSO
-perl(1), uudeview homepage at http://www.uni-frankfurt.de/~fp/uudeview/.
+perl(1), uudeview homepage at L<http://www.fpx.de/fp/Software/UUDeview/>.
 =cut

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Comparing Convert-UUlib/UUlib.pm (file contents): Revision 1.38 by root, Wed Sep 16 18:10:18 2009 UTC vs. Revision 1.47 by root, Fri Feb 28 16:57:25 2020 UTC

Diff Legend

Comparing Convert-UUlib/UUlib.pm (file contents):
Revision 1.38 by root, Wed Sep 16 18:10:18 2009 UTC vs.
Revision 1.47 by root, Fri Feb 28 16:57:25 2020 UTC