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/* -*-C-*-
*******************************************************************************
*
* File: makeindex.c
* RCS: $Header: /home/matthew/cvs/bible-kjv-4.10/makeindex.c,v 2.6 2005/01/23 11:23:15 matthew Exp $
* Description: Create Line Index to Text File
* Author: Chip Chapin, Hewlett Packard Company
* Created: Jan 14 1989
* Modified: Thu Sep 14 12:37:15 1989 (Chip Chapin) chip@hpcllcc
* Language: C
* Package: Bible Retrieval System
* Status: Experimental (Do Not Distribute)
*
* $Log: makeindex.c,v $
* Revision 2.6 2005/01/23 11:23:15 matthew
* include standard header files
*
* Revision 2.5 2005/01/22 17:48:08 matthew
* prototype main correctly
*
* Revision 2.4 2005/01/21 19:39:36 matthew
* remove unused variables
*
* Revision 2.3 2003/07/26 09:22:12 matthew
* Correct arguments to printf
*
* Revision 2.2 2003/02/01 02:40:43 matthew
* Make main() return an int, and prototype accordingly.
*
* Revision 2.1 2003/01/08 15:52:50 matthew
* line_locator[] is int not long (from debian patch)
*
* Revision 2.0 2003/01/08 15:29:52 matthew
* versions collected from the net
*
* Revision 1.2 89/09/14 20:34:03 20:34:03 chip (Chip Chapin)
* Release 1-2. Supports -f and -l options for formatting the output.
* Updates primarily brl.c, bible.c, and bible.1.
*
* Revision 1.1 89/09/05 17:49:34 17:49:34 chip (Chip Chapin)
* Initial revision
*
*
*******************************************************************************
*/
/*----------------------------------------------------------------------
| NAME:
| makeindex.c
|
| PURPOSE:
| Create an index to each line of a text file.
|
| The table thus produced may be indexed by line number to
| produce the absolute byte number of the file at which that
| line begins.
|
| An extra entry is guaranteed at the end, so that
| table[n+1], where n is the total number of lines in the
| file, yields the byte number just *after* the last byte of
| the last line (i.e. the total number of bytes in the
| file).
|
| By convention, I assume that "line 0" of the text file is
| an informational string describing the data. So the first
| line of data is actually "line 1". But there's really
| nothing in the construction of the index that mandates
| that convention.
|
| For the Bible Retrieval System, each verse starts on a new
| line. So the index produced by this program is an index
| to each Bible verse.
|
| FUNCTIONS:
| N/A
|
| HISTORY:
| 890114 cc Creation.
| 890904 cc Tidy it up, and read filenames from command line.
|
\*----------------------------------------------------------------------*/
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <time.h>
/* Size of text buffer. Better be enough for one line */
#define TBSIZE 2048
int main(int argc,char **argv)
{
FILE *fp;
time_t t;
long cur_line;
long offset;
char textbuff[TBSIZE];
if (--argc < 1) {
fprintf( stderr, "%s: Missing input file name\n", *argv );
fprintf( stderr, "Usage: %s textfile\n", *argv );
exit( 1 );
}
fp = fopen( argv[1], "r" );
if (fp == NULL) {
fprintf( stderr, "%s: Cannot open file %s\n", *argv, argv[1] );
return 1;
}
time(&t);
printf( "/* Text index to file: %s\n", argv[1] );
printf( " Created %s\n", ctime(&t) );
printf( "*/\n" );
printf( "int line_locator[] = {" );
offset = cur_line = 0L;
while (!feof(fp)) {
if (cur_line % 8 == 0) printf( "\n\t" ); /* pretty */
/* print offset of current line */
printf( "%ld, ", offset );
/* Determine offset of next line */
fgets( textbuff, TBSIZE, fp);
offset += strlen(textbuff);
cur_line++;
}
/* print offset of last line */
printf( "%ld\n\t};\n", offset ); /* end of array initialization */
printf( "\t/* textfile: %s, %ld lines. */\n", argv[1], cur_line );
printf( "int max_line = %ld;\n", cur_line-1 );
fclose(fp);
return(0);
} /* main */
|
