54 lines
1.2 KiB
C
54 lines
1.2 KiB
C
/* sgetopt.c, sgetopt.h: (yet another) improved getopt clone, outer layer
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D. J. Bernstein, djb@pobox.com.
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Depends on subgetopt.h, substdio.h, subfd.h.
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No system requirements.
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19970208: Cleanups.
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931201: Baseline.
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No known patent problems.
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Documentation in sgetopt.3.
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*/
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#include "substdio.h"
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#include "subfd.h"
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#define SGETOPTNOSHORT
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#include "sgetopt.h"
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#define SUBGETOPTNOSHORT
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#include "subgetopt.h"
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#define getopt sgetoptmine
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#define optind subgetoptind
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#define opterr sgetopterr
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#define optproblem subgetoptproblem
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#define optprogname sgetoptprogname
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int opterr = 1;
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char *optprogname = 0;
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int getopt(argc,argv,opts)
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int argc;
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char **argv;
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char *opts;
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{
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int c;
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char *s;
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if (!optprogname) {
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optprogname = *argv;
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if (!optprogname) optprogname = "";
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for (s = optprogname;*s;++s) if (*s == '/') optprogname = s + 1;
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}
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c = subgetopt(argc,argv,opts);
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if (opterr)
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if (c == '?') {
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char chp[2]; chp[0] = optproblem; chp[1] = '\n';
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substdio_puts(subfderr,optprogname);
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if (argv[optind] && (optind < argc))
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substdio_puts(subfderr,": illegal option -- ");
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else
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substdio_puts(subfderr,": option requires an argument -- ");
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substdio_put(subfderr,chp,2);
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substdio_flush(subfderr);
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}
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return c;
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}
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