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yencode(n)			  encode/decoding a binary file 		       yencode(n)

       yencode - encode/decoding a binary file

       package require Tcl 8

       package require yencode ?1.0?

       ::yencode::encode string

       ::yencode::decode string

       ::yencode::yencode  ?-name string? ?-line integer? ?-crc32 boolean? (-file filename | ?--?

       ::yencode::ydecode (-file filename | ?--? string)

       This package provides a Tcl-only implementation of the  yEnc  file  encoding.  This  is	a
       recently  introduced method of encoding binary files for transmission through usenet. This
       encoding packs binary data into a format that requires an 8-bit clean  transmission  layer
       but   that   escapes   characters   special   to   the	NNTP   posting	 protocols.   See
       http://www.yenc.org/ for details concerning the algorithm.

       ::yencode::encode string
	      returns the yEnc encoded data.

       ::yencode::decode string
	      Decodes the given yEnc encoded data.

       ::yencode::yencode ?-name string? ?-line integer? ?-crc32 boolean? (-file filename |  ?--?
	      Encode a file or block of data.

       ::yencode::ydecode (-file filename | ?--? string)
	      Decode  a  file or block of data. A file may contain more than one embedded file so
	      the result is a list where each element is a three element list of  filename,  file
	      size and data.

       -filename name
	      Cause the yencode or ydecode commands to read their data from the named file rather
	      that taking a string parameter.

       -name string
	      The encoded data header line contains the suggested  file  name  to  be  used  when
	      unpacking the data. Use this option to change this from the default of "data.dat".

       -line integer
	      The  yencoded  data  header  line  contains records the line length used during the
	      encoding. Use this option to select a line length other that the	default  of  128.
	      Note  that  NNTP	imposes  a 1000 character line length limit and some gateways may
	      have trouble with more than 255 characters per line.

       -crc32 boolean
	      The yEnc specification recommends the inclusion of a cyclic redundancy check  value
	      in the footer. Use this option to change the default from true to false.

       % set d [yencode::yencode -file testfile.txt]
       =ybegin line=128 size=584 name=testfile.txt
	-o- data not shown -o-
       =yend size=584 crc32=ded29f4f

       encoding, uuencode, yEnc, yencode, ydecode

base64					       1.0				       yencode(n)
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