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/* help.c */
/*
* Print help information about a VIS-5D utility by scanning the source
* code file for special comment lines.
*/
/* VIS-5D version 4.0 */
/*
Copyright (C) 1990-1994 Bill Hibbard, Brian Paul and Dave Santek
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 1, or (at your option)
any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
#include <stdio.h>
#include <string.h>
#define F77_PREFIX "C ?"
#define C_PREFIX "?"
/*
* Input: path - path to search in
* program - program name
* suffix - either ".c" or ".f"
* Return: 1 = success, 0 = error
*/
static int print_help( path, program, suffix )
char *path;
char *program;
char *suffix;
{
FILE *f;
char prefix[100];
char filename[100];
char line[1000];
int prefix_len;
if (strcmp(suffix,".c")==0) {
strcpy( prefix, C_PREFIX );
}
else {
strcpy( prefix, F77_PREFIX );
}
prefix_len = strlen( prefix );
/* build path/file name */
strcpy( filename, path );
strcat( filename, program );
strcat( filename, suffix );
f = fopen(filename,"r");
if (f) {
while (fgets(line, 80, f) != NULL) {
if (strncmp(line, prefix, prefix_len) == 0) {
printf("%s", line+prefix_len);
}
}
fclose(f);
return 1;
}
else {
return 0;
}
}
main(argc,argv)
int argc;
char *argv[];
{
if (argc!=2) {
printf("Usage:\n");
printf(" help program\n");
printf("where program is the name of a VIS-5D utility\n");
exit(0);
}
/* vis5d is a special case */
if (strcmp(argv[1],"vis5d")==0) {
printf("For help on vis5d usage just type vis5d\n");
exit(0);
}
if (print_help( "./util", argv[1], ".f")) exit(0);
if (print_help( "./util", argv[1], ".c")) exit(0);
printf("no help for %s\n", argv[1]);
exit(0);
}
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