c program to extract text between two delimiters from some text file

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# 8  
Old 12-03-2008
#include <stdio.h>
#include <fcntl.h>
#include <stdlib.h>
#include <unistd.h>
#include <string.h>

main ()
    FILE * f;
    char buf[1024];
    char * saveptr;
    char * token;
    char hash[7][100];
    int offset;

    f = fopen ("list", "r");

    while (fgets (buf, 1024, f))
        if (strchr(buf, '\n'))
            *strchr(buf, '\n') = '\0';
        for (offset=0, token = buf; offset < 7 ; token = NULL, offset++)
            token = strtok_r(token, "|", &saveptr);
            if (token == NULL)
            printf ("%s\n", token);
    //      strncpy(hash[offset], token, 100);

    fclose (f);

Here is an example of strtok_r() (thread safe). I commented the strncpy() line where every separated value is stored in "hash" variable. If you wish to store everything in memory, you could use linked lists to link multiple structs which have 'hash' variables.
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OGMDEMUX(1)							   User Commands						       OGMDEMUX(1)

ogmdemux - Extract streams from OGG/OGM files into separate files SYNOPSIS
ogmdemux [options] inname DESCRIPTION
This program extracts all or only some streams from an OGM and writes them to separate files. inname Use 'inname' as the source. -o, --output out Use 'out' as the base for destination file names. '-v1', '-v2', '-a1', '-t1'... will be appended to this name. Default: use 'inname'. -a, --astream n Extract specified audio stream. Can be used more than once. Default: extract all streams. -d, --vstream n Extract specified video stream. Can be used more than once. Default: extract all streams. -t, --tstream n Extract specified text stream. Can be used more than once. Default: extract all streams. -na, --noaudio Don't extract any audio streams. -nv, --novideo Don't extract any video streams. -nt, --notext Don't extract any text streams. Default: extract all streams. -r, --raw Extract the raw streams only. Default: extract to useful formats (AVI, WAV, OGG, SRT...). -v, --verbose Increase verbosity. -h, --help Show this help. -V, --version Show version number. NOTES
What works: * Extraction of the following formats is fully supported including writing the stream contents to useful container formats: video -> AVI Vorbis -> OGG/Vorbis PCM -> WAV text -> text files (SRT subtitle format) * All other audio streams (MP3, AC3) are just copied 1:1 into output files. MP3 and AC3 files should be usable. Others might not. What not works: * Headers created by older OggDS (DirectShow) filter versions are not supported (and probably never will be). AUTHOR
ogmdemux was written by Moritz Bunkus <moritz@bunkus.org>. SEE ALSO
ogmmerge(1), ogmsplit(1), ogminfo(1), ogmcat(1), dvdxchap(1) WWW
The newest version can always be found at <http://www.bunkus.org/videotools/ogmtools/> <http://www.bunkus.org/videotools/ogmtools/> ogmdemux v1.5 November 2004 OGMDEMUX(1)