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Top Forums UNIX for Dummies Questions & Answers To convert multi format file to a readable ascii format Post 302178423 by drl on Tuesday 25th of March 2008 12:31:33 PM
Old 03-25-2008
Hi.
Quote:
unpack TEMPLATE,EXPR
"unpack" does the reverse of "pack": it takes a string and
expands it out into a list of values. (In scalar context, it
returns merely the first value produced.)

The string is broken into chunks described by the TEMPLATE.
Each chunk is converted separately to a value. Typically,
either the string is a result of "pack", or the bytes of the
string represent a C structure of some kind.

-- excerpt from perldoc -f unpack
I have used this to process a graphics mixed text and binary file. In general, it's best to know the exact layout, although it might be interesting to try doing some auto-recognition of the pieces.

Best wishes ... cheers, drl
 

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CDTOA(1)						      General Commands Manual							  CDTOA(1)

NAME
cdtoa - To convert the binary format of a dictionary back to text format. SYNOPSIS
cdtoa [-n] [-s] [-z] [-e] [-E] infilename [-h cixingfile ] [ usagefreqfile ] DEFAULT PATH
/usr/local/bin/cWnn4/cdtoa DESCRIPTION
To convert the binary format of the dictionary to text format, and output to standard output(stdout). infilename is the name of the input binary format dictionary. The output may be piped into a file by using the ">" command. For example, cdtoa dict.dic > dict.u "dict.u" here is the output text format dictionary, while the "dict.dic" is the input binary format dictionary. usagefreqfile may indicate more than one user usage frequency files (for a particular user). These usage frequency information will be reflected in the text format dictionary created. OPTIONS
-s To order the entries in text dictionary according to Pinyin or Zhuyin. -n To attach sequence numbers to the output. -z To convert the binary format back to text format in Zhuyin. (Note: default is Pinyin) -e If the Hanzi inside the text dictionary contains characters such as space and tab, they will be compacted to special format. (Default) -E If the Hanzi inside the text dictionary contains characters such as space and tab, they will NOT be compacted to special format. -h cixingfile To specify the Cixing definition file. NOTE
1. The parts in [ ] are options. They may be omitted. 2. The Pinyin and Zhuyin dictionary has the same format. 3. The default conversion result of the text dictionary is in Pinyin. 13 May 1992 CDTOA(1)
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