ascii85(1) [debian man page]

ASCII85(1)																ASCII85(1)

NAME

       ascii85 - encodes or decodes files using Ascii85 ruby library

SYNOPSIS

       ascii85 [OPTIONS] FILES

DESCRIPTION

       Ascii85 (also called "Base85") is a form of binary-to-text encoding, wich is mainly used in Adobe's PostScript and PDF format.

       ascii85 is a command line utility, modeled after base64(1) from the GNU coreutils, can encode text files to Ascii85 or decode Ascii85 files
       to text, and then print the result to the standard output.

       If no file is given on the command line, ascii85 reads from the standard input.

OPTIONS

       -w, --wrap COLUMN
	   Wrap lines at COLUMN. Default is 80, use 0 for no wrapping

       -d, --decode
	   Decode the input

       -h, --help
	   Display a usage message and exit

       --version
	   Output version information

AUTHORS

       ascii85 has been developed by Johannes HolzfuB.

       This manual page has been written for the Debian Project by Cedric Boutillier (but may used by others).

								    2011-09-19								ASCII85(1)

ascii85(3tcl)					       Text encoding & decoding binary data					     ascii85(3tcl)

__________________________________________________________________________________________________________________________________________________

NAME

       ascii85 - ascii85-encode/decode binary data

SYNOPSIS

       package require Tcl  8.4

       package require ascii85	?1.0?

       ::ascii85::encode ?-maxlen maxlen? ?-wrapchar wrapchar? string

       ::ascii85::decode string

_________________________________________________________________

DESCRIPTION

       This package provides procedures to encode binary data into ascii85 and back.

       ::ascii85::encode ?-maxlen maxlen? ?-wrapchar wrapchar? string
	      Ascii85  encodes	the  given binary string and returns the encoded result. Inserts the character wrapchar every maxlen characters of
	      output. wrapchar defaults to newline. maxlen defaults to 76.

	      Note well: If your string is not simple ascii you should fix the string encoding before doing ascii85 encoding. See the examples.

	      The command will throw an error for negative values of maxlen, or if maxlen is not an integer number.

       ::ascii85::decode string
	      Ascii85 decodes the given string and returns the binary data.  The decoder ignores whitespace in the string, as  well  as  tabs  and
	      newlines.

EXAMPLES

	      % ascii85::encode "Hello, world"
	      87cURD_*#TDfTZ)

	      % ascii85::encode [string repeat xyz 24]
	      G^4U[H$X^H?a^]G^4U[H$X^H?a^]G^4U[H$X^H?a^]G^4U[H$X^H?a^]G^4U[H$X^H?a^]G
	      ^4U[H$X^H?a^]
	      % ascii85::encode -wrapchar "" [string repeat xyz 24]
	      G^4U[H$X^H?a^]G^4U[H$X^H?a^]G^4U[H$X^H?a^]G^4U[H$X^H?a^]G^4U[H$X^H?a^]G^4U[H$X^H?a^]

	      # NOTE: ascii85 encodes BINARY strings.
	      % set chemical [encoding convertto utf-8 "Cu2088Hu2081u2080Nu2084Ou2082"]
	      % set encoded [ascii85::encode $chemical]
	      6fN]R8E,5PiduUiduhZidua
	      % set caffeine [encoding convertfrom utf-8 [ascii85::decode $encoded]]

REFERENCES

       [1]    http://en.wikipedia.org/wiki/Ascii85

       [2]    Postscript Language Reference Manual, 3rd Edition, page 131.  http://www.adobe.com/devnet/postscript/pdfs/PLRM.pdf

BUGS, IDEAS, FEEDBACK
       This  document,	and the package it describes, will undoubtedly contain bugs and other problems.  Please report such in the category base64
       of the Tcllib SF Trackers [http://sourceforge.net/tracker/?group_id=12883].  Please also report any ideas for enhancements you may have for
       either package and/or documentation.

KEYWORDS

       ascii85, encoding

CATEGORY

       Text processing

COPYRIGHT

       Copyright (c) 2010, Emiliano Gavilan

base64									1.0							     ascii85(3tcl)