uniunmask(1) [debian man page]

UNIUNMASK(1)						      General Commands Manual						      UNIUNMASK(1)

NAME

       uniunmask - XOR bits or substitute glyphs in a GNU Unifont file.

SYNOPSIS

       uniunmask [-iinput_file] [-ooutput_file]

DESCRIPTION

       uniunmask reads a GNU Unifont .hex file.  As it reads the font file, it scans for code points matching entries in the "masks.hex" and "sub-
       stitutes.hex" files.  "masks.hex" and "substitutes.hex" are also in GNU Unifont .hex format, ordered by Unicode code point (the hexadecimal
       number to the left of the colon on each line).

       If  a code point is encountered from "substitutes.hex", the input code point in the original .hex file is ignored (as is any entry with the
       same code point in "masks.hex") and the glyph from "substitutes.hex" is written to the output file.

       Otherwise, if a code point is encountered from "masks.hex", the input glyph in the original .hex  file  is  XORed  with	the  bits  in  the
       "masks.hex" entry.  The result of this XOR operation is written to the output file.

OPTIONS

       -i	   Specify the input file. The default is stdin.

       -o	   Specify the output file. The default is stdout.

FILES

       masks.hex, substitutes.hex, *.hex GNU Unifont font files

SEE ALSO

       bdfimplode(1),  hex2bdf(1),  hex2bdf-split(1),  hex2sfd(1), hexbraille(1), hexdraw(1), hexmerge(1), johab2ucs2(1), unibmp2hex(1), unicover-
       age(1), unidup(1), unihex2bmp(1), unipagecount(1)

AUTHOR

       uniunmask was written by Paul Hardy.

LICENSE

       uniunmask is Copyright (C) 2007 Paul Hardy, and is released under version 2 of the GNU General Public License, or (at your option) a  later
       version.

BUGS

       No  known  real	bugs exist, except that this software does not perform extensive error checking on its input files.  If they're not in the
       format of the original GNU Unifont hex file, all bets are off.

								    2008 Jul 6							      UNIUNMASK(1)

base32::hex(n)							  Base32 encoding						    base32::hex(n)

__________________________________________________________________________________________________________________________________________________

NAME

       base32::hex - base32 extended hex encoding

SYNOPSIS

       package require Tcl  8.4

       package require base32::core  ?0.1?

       package require base32::hex  ?0.1?

       ::base32::hex::encode string

       ::base32::hex::decode estring

_________________________________________________________________

DESCRIPTION

       This  package  provides	commands for encoding and decoding of strings into and out of the extended hex base32 encoding as specified in the
       RFC 3548bis draft.

API

       ::base32::hex::encode string
	      This command encodes the given string in extended hex base32 and returns the encoded string as its result. The result may be  padded
	      with the character = to signal a partial encoding at the end of the input string.

       ::base32::hex::decode estring
	      This  commands  takes  the  estring  and	decodes it under the assumption that it is a valid extended hex base32 encoded string. The
	      result of the decoding is returned as the result of the command.

	      Note that while the encoder will generate only uppercase characters this decoder accepts input in lowercase as well.

	      The command will always throw an error whenever encountering conditions which signal some type of bogus input, namely if

	      [1]    the input contains characters which are not valid output of a extended hex base32 encoder,

	      [2]    the length of the input is not a multiple of eight,

	      [3]    padding appears not at the end of input, but in the middle,

	      [4]    the padding has not of length six, four, three, or one characters,

CODE MAP

       The code map used to convert 5-bit sequences is shown below, with the numeric id of the bit sequences to the left and the character used to
       encode it to the right. The important feature of the extended hex mapping is that the first 16 codes map to the digits and hex characters.

	    0 0    9 9	      18 I   27 R
	    1 1   10 A	      19 J   28 S
	    2 2   11 B	      20 K   29 T
	    3 3   12 C	      21 L   30 U
	    4 4   13 D	      22 M   31 V
	    5 5   14 E	      23 N
	    6 6   15 F	      24 O
	    7 7        16 G   25 P
	    8 8        17 H   26 Q

BUGS, IDEAS, FEEDBACK
       This  document,	and the package it describes, will undoubtedly contain bugs and other problems.  Please report such in the category base32
       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

       base32, hex, rfc3548

COPYRIGHT

       Copyright (c) Public domain

base32									0.1							    base32::hex(n)