/*
* mkindx.c -- make help/news file indexes
*/
/*
* $Id: mkindx.c,v 1.2 2005/08/08 09:43:07 murrayma Exp $
*/
#include "copyright.h"
#include "config.h"
#define MKINDX
#include "help.h"
char line[LINE_SIZE];
int main(argc, argv)
int argc;
char *argv[];
{
long pos;
int i, n, lineno, ntopics;
char *s, *topic;
help_indx entry;
FILE *rfp, *wfp;
if (argc < 2 || argc > 3) {
printf
("Usage:\tmkindx <file_to_be_indexed> <output_index_filename>\n");
exit(-1);
}
if ((rfp = fopen(argv[1], "r")) == NULL) {
fprintf(stderr, "can't open %s for reading\n", argv[1]);
exit(-1);
}
if ((wfp = fopen(argv[2], "w")) == NULL) {
fprintf(stderr, "can't open %s for writing\n", argv[2]);
exit(-1);
}
pos = 0L;
lineno = 0;
ntopics = 0;
while (fgets(line, LINE_SIZE, rfp) != NULL) {
++lineno;
n = strlen(line);
if (line[n - 1] != '\n') {
fprintf(stderr, "line %d: line too long\n", lineno);
}
if (line[0] == '&') {
++ntopics;
if (ntopics > 1) {
entry.len = (int) (pos - entry.pos);
if (fwrite(&entry, sizeof(help_indx), 1, wfp) < 1) {
fprintf(stderr, "error writing %s\n", argv[2]);
exit(-1);
}
}
for (topic = &line[1];
(*topic == ' ' || *topic == '\t') && *topic != '\0';
topic++);
for (i = -1, s = topic; *s != '\n' && *s != '\0'; s++) {
if (i >= TOPIC_NAME_LEN - 1)
break;
if (*s != ' ' || entry.topic[i] != ' ')
entry.topic[++i] = *s;
}
entry.topic[++i] = '\0';
entry.pos = pos + (long) n;
}
pos += n;
}
entry.len = (int) (pos - entry.pos);
if (fwrite(&entry, sizeof(help_indx), 1, wfp) < 1) {
fprintf(stderr, "error writing %s\n", argv[2]);
exit(-1);
}
fclose(rfp);
fclose(wfp);
printf("%d topics indexed\n", ntopics);
exit(0);
}