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72 lines
1.8 KiB
HTML
72 lines
1.8 KiB
HTML
<!doctype HTML public "-//W3O//DTD W3 HTML 2.0//EN">
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<HTML>
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<HEAD>
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<TITLE>giftext</TITLE>
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<link rev=made href=mailto:esr@snark.thyrsus.com>
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</HEAD>
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<BODY>
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Go to <a href="index.html">index page</a>.
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<CENTER><H1>giftext</H1></CENTER>
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A program to dump (text only) general information about GIF file.<P>
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<H1>Usage:</H1>
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<pre>
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giftext [-q] [-c] [-e] [-z] [-p] [-r] [-h] gif-file
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</pre>
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If no gif-file is given, GifText will try to read a GIF file from stdin.<P>
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As giftext can generate huge amounts of data, ^C will kill it, but 'q' will
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stop only the printing (of one of -e, -z, -p), while file integrity will still
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be checked.<P>
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<H1>Memory required:</H1>
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Line.
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<H1>Options:</H1>
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<DL>
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<DT> [-q]
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<DD> Quiet mode. Defaults off on MSDOS, on under UNIX. Controls printout
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of running scan lines. Use -q- to invert.<P>
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<DT> [-c]
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<DD> Dumps the color maps.<P>
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<DT> [-e]
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<DD> Dumps encoded bytes - the pixels after compressed using LZ
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algorithm and chained to form bytes. This is the form the data is saved
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in the GIF file. Dumps in hex - 2 digit per byte.<P>
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<DT> [-z]
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<DD> Dumps the LZ codes of the image. Dumps in hex - 3 digits per
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code (as we are limited to 12 bits).<P>
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<DT> [-p]
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<DD> Dumps the pixels of the image. Dumps in hex - 2 digit per
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pixel (<=byte).<P>
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<DT> [-r]
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<DD> Dumps raw pixels as one byte per pixel. This option inhibits all
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other options and only the pixels are dumped. This option may be used to
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convert GIF files into raw data. Note: the color map can be extracted by
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gifclrmp utility. If more than one image is included in the file, all
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images will be dumped in order.<P>
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<DT> [-h]
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<DD> Print one line of command line help, similar to Usage above.<P>
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</DL>
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<H1>Author:</H1>
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Gershon Elber
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<HR>
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<ADDRESS>Eric S. Raymond <A HREF="mailto:esr@thyrsus.com"><esr@snark.thyrsus.com></A></ADDRESS>
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</BODY>
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</HTML>
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