diff options
Diffstat (limited to 'sgetopt.c')
-rw-r--r-- | sgetopt.c | 54 |
1 files changed, 54 insertions, 0 deletions
diff --git a/sgetopt.c b/sgetopt.c new file mode 100644 index 0000000..a8bffc0 --- /dev/null +++ b/sgetopt.c @@ -0,0 +1,54 @@ +/* sgetopt.c, sgetopt.h: (yet another) improved getopt clone, outer layer +D. J. Bernstein, djb@pobox.com. +Depends on subgetopt.h, substdio.h, subfd.h. +No system requirements. +19970208: Cleanups. +931201: Baseline. +No known patent problems. + +Documentation in sgetopt.3. +*/ + +#include "substdio.h" +#include "subfd.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; +char *optprogname = 0; + +int getopt(argc,argv,opts) +int argc; +char **argv; +char *opts; +{ + int c; + 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'; + substdio_puts(subfderr,optprogname); + if (argv[optind] && (optind < argc)) + substdio_puts(subfderr,": illegal option -- "); + else + substdio_puts(subfderr,": option requires an argument -- "); + substdio_put(subfderr,chp,2); + substdio_flush(subfderr); + } + return c; +} |