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/* 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,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;
}
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