mirror of
https://github.com/stefanocasazza/ULib.git
synced 2025-09-28 19:05:55 +08:00
54 lines
1.2 KiB
C
54 lines
1.2 KiB
C
/* Public domain. */
|
|
|
|
/* sgetopt.c, sgetopt.h: (yet another) improved getopt clone, outer layer
|
|
D. J. Bernstein, djb@pobox.com.
|
|
Depends on subgetopt.h, buffer.h.
|
|
No system requirements.
|
|
19991219: Switched to buffer.h.
|
|
19970208: Cleanups.
|
|
931201: Baseline.
|
|
No known patent problems.
|
|
|
|
Documentation in sgetopt.3.
|
|
*/
|
|
|
|
#include "buffer.h"
|
|
#define SGETOPTNOSHORT
|
|
#include "sgetopt.h"
|
|
#define SUBGETOPTNOSHORT
|
|
#include "subgetopt.h"
|
|
|
|
#define getopt sgetoptmine
|
|
#define optind subgetoptind
|
|
#define opterr sgetopterr
|
|
#define optproblem subgetoptproblem
|
|
#define optprogname sgetoptprogname
|
|
|
|
int opterr = 1;
|
|
const char *optprogname = 0;
|
|
|
|
int getopt(int argc,const char *const *argv,const char *opts)
|
|
{
|
|
int c;
|
|
const char *s;
|
|
|
|
if (!optprogname) {
|
|
optprogname = *argv;
|
|
if (!optprogname) optprogname = "";
|
|
for (s = optprogname;*s;++s) if (*s == '/') optprogname = s + 1;
|
|
}
|
|
c = subgetopt(argc,argv,opts);
|
|
if (opterr)
|
|
if (c == '?') {
|
|
char chp[2]; chp[0] = optproblem; chp[1] = '\n';
|
|
buffer_puts(buffer_2,optprogname);
|
|
if (argv[optind] && (optind < argc))
|
|
buffer_puts(buffer_2,": illegal option -- ");
|
|
else
|
|
buffer_puts(buffer_2,": option requires an argument -- ");
|
|
buffer_put(buffer_2,chp,2);
|
|
buffer_flush(buffer_2);
|
|
}
|
|
return c;
|
|
}
|