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;
+}