and added files

[bcm963xx.git] / userapps / opensource / net-snmp / snmplib / getopt.c

diff --git a/userapps/opensource/net-snmp/snmplib/getopt.c b/userapps/opensource/net-snmp/snmplib/getopt.c
new file mode 100644 (file)
index 0000000..f370ed8
--- /dev/null
+++ b/userapps/opensource/net-snmp/snmplib/getopt.c
@@ -0,0 +1,122 @@
+/*
+ * Copyright (c) 1987, 1993, 1994
+ *      The Regents of the University of California.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *      This product includes software developed by the University of
+ *      California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#if defined(LIBC_SCCS) && !defined(lint)
+/*
+ * static char sccsid[] = "from: @(#)getopt.c   8.2 (Berkeley) 4/2/94"; 
+ */
+static char    *rcsid =
+    "$Id: getopt.c,v 5.0 2002/04/20 07:30:20 hardaker Exp $";
+#endif                          /* LIBC_SCCS and not lint */
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+
+#ifdef _BSD
+extern char    *__progname;
+#else
+#define __progname "getopt"
+#endif
+
+int             opterr = 1,     /* if error message should be printed */
+                optind = 1,     /* index into parent argv vector */
+                optopt,         /* character checked for validity */
+                optreset;       /* reset getopt */
+char           *optarg;         /* argument associated with option */
+char            EMSG[] = "";
+
+#define        BADCH   (int)'?'
+#define        BADARG  (int)':'
+
+/*
+ * getopt --
+ *      Parse argc/argv argument vector.
+ */
+int
+getopt(int nargc, char *const *nargv, const char *ostr)
+{
+    static char    *place = EMSG;       /* option letter processing */
+    char           *oli;        /* option letter list index */
+
+    if (optreset || !*place) {  /* update scanning pointer */
+        optreset = 0;
+        if (optind >= nargc || *(place = nargv[optind]) != '-') {
+            place = EMSG;
+            return (-1);
+        }
+        if (place[1] && *++place == '-') {      /* found "--" */
+            ++optind;
+            place = EMSG;
+            return (-1);
+        }
+    }                           /* option letter okay? */
+    if ((optopt = (int) *place++) == (int) ':' ||
+        !(oli = strchr(ostr, optopt))) {
+        /*
+         * if the user didn't specify '-' as an option,
+         * assume it means -1.
+         */
+        if (optopt == (int) '-')
+            return (-1);
+        if (!*place)
+            ++optind;
+        if (opterr && *ostr != ':')
+            (void) fprintf(stderr,
+                           "%s: illegal option -- %c\n", __progname,
+                           optopt);
+        return (BADCH);
+    }
+    if (*++oli != ':') {        /* don't need argument */
+        optarg = NULL;
+        if (!*place)
+            ++optind;
+    } else {                    /* need an argument */
+        if (*place)             /* no white space */
+            optarg = place;
+        else if (nargc <= ++optind) {   /* no arg */
+            place = EMSG;
+            if (*ostr == ':')
+                return (BADARG);
+            if (opterr)
+                (void) fprintf(stderr,
+                               "%s: option requires an argument -- %c\n",
+                               __progname, optopt);
+            return (BADCH);
+        } else                  /* white space */
+            optarg = nargv[optind];
+        place = EMSG;
+        ++optind;
+    }
+    return (optopt);            /* dump back option letter */
+}