gno/usr.bin/man/apropos.c
gdr 73ce022151 Version 3.0 of the manpack archive. This moved on top of the
original makewhatis repository.  Earlier versions of man, apropos,
and whatis were by other authors (these are written from scratch).
Catman is new.
1996-01-28 00:41:22 +00:00

111 lines
2.5 KiB
C

/*
* Copyright 1995 by Devin Reade <gdr@myrias.com>. For distribution
* information see the README file that is part of the manpack archive,
* or contact the author, above.
*/
segment "apropos___";
#include <stdio.h>
#include <getopt.h>
#include <stdlib.h>
#include <libc.h>
#include "util.h"
#include "man.h"
extern int optind;
extern char *optarg;
static char *versionstr = "3.0";
static char *nothing = "nothing appropriate";
extern void begin_stack_check(void);
extern int end_stack_check(void);
int main (int argc, char **argv) {
char *path;
int i, matches1, matches2, matches3;
short V_flag, M_flag, m_flag, n_flag, err_flag;
/* make sure Gno is running */
if (needsgno()==0) {
fprintf(stderr,"Requires Gno/ME\n");
return 1;
}
#ifdef STACK_CHECK
begin_stack_check();
#endif
/* initialization */
V_flag = M_flag = m_flag = n_flag = err_flag = 0;
matches1 = matches2 = matches3 = 0;
/* parse command line and check usage */
while((i = getopt(argc,argv,"M:m:nV")) != EOF) {
switch(i) {
case 'M':
if (m_flag) err_flag++;
M_flag++;
path = optarg;
break;
case 'm':
if (M_flag) err_flag++;
m_flag++;
path = optarg;
break;
case 'n':
n_flag++;
break;
case 'V':
V_flag++;
break;
default:
err_flag++;
}
}
if (argc-optind < 1) err_flag++;
if (err_flag || V_flag) {
fprintf(stderr,"%s version %s by Devin Reade\n",
basename(argv[0]),versionstr);
}
if (err_flag) {
fprintf(stderr,
"Usage: %s [[-M path] | [-m path]] [-nV] keyword [keyword ...]\n",
basename(argv[0]));
return 1;
}
/* do the search */
if (M_flag) {
manpath = path;
} else {
manpath = getManpath();
}
matches1 = apropos(argc-optind, &argv[optind], MAN_K_MODE);
if (!M_flag) free(manpath);
if (m_flag) {
manpath = path;
matches2 = apropos(argc-optind, &argv[optind], MAN_K_MODE);
}
if (!n_flag) {
matches3 = apropos(argc-optind, &argv[optind], ORCA_K_MODE);
}
i = 0;
if (matches1>0) i+= matches1;
if ( m_flag && matches2>0) i+=matches2;
if (!n_flag && matches3>0) i+=matches3;
if (i==0) {
fprintf(stderr,"%s: %s\n",basename(argv[0]),nothing);
}
#ifdef STACK_CHECK
fprintf(stderr,"stack usage: %d bytes\n",end_stack_check());
#endif
if ((matches1>=0) && (matches2>=0) && (matches3>=0) && i>0) return 0;
return 1;
}