Add current version of libSRTP from CVS.

libsrtp/test/getopt_s.c

+/*
+ * getopt.c
+ *
+ * a minimal implementation of the getopt() function, written so that
+ * test applications that use that function can run on non-POSIX
+ * platforms 
+ *
+ */
+/*
+ *      
+ * Copyright (c) 2001-2006 Cisco Systems, Inc.
+ * All rights reserved.
+ * 
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 
+ *   Redistributions of source code must retain the above copyright
+ *   notice, this list of conditions and the following disclaimer.
+ * 
+ *   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.
+ * 
+ *   Neither the name of the Cisco Systems, Inc. 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 COPYRIGHT HOLDERS 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
+ * COPYRIGHT HOLDERS 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.
+ *
+ */
+
+#include <stdlib.h>  /* for NULL */
+
+int optind_s = 0;
+
+char *optarg_s;
+
+#define GETOPT_FOUND_WITHOUT_ARGUMENT    2
+#define GETOPT_FOUND_WITH_ARGUMENT       1
+#define GETOPT_NOT_FOUND                 0 
+
+static int 
+getopt_check_character(char c, const char *string) {
+  unsigned int max_string_len = 128;
+
+  while (*string != 0) {
+    if (max_string_len == 0) {
+      return '?';
+    }
+    if (*string++ == c) {
+      if (*string == ':') {
+        return GETOPT_FOUND_WITH_ARGUMENT;
+      } else {
+        return GETOPT_FOUND_WITHOUT_ARGUMENT;
+      }
+    }
+  }
+  return GETOPT_NOT_FOUND;
+}
+
+int
+getopt_s(int argc, 
+       char * const argv[], 
+       const char *optstring) {
+
+
+  while (optind_s + 1 < argc) {
+    char *string;
+    
+    /* move 'string' on to next argument */
+    optind_s++;
+    string = argv[optind_s];
+
+    if (string == NULL)
+      return '?'; /* NULL argument string */
+
+    if (string[0] != '-')
+      return -1; /* found an unexpected character */
+
+    switch(getopt_check_character(string[1], optstring)) {
+    case GETOPT_FOUND_WITH_ARGUMENT:
+      if (optind_s + 1 < argc) {
+        optind_s++;
+        optarg_s = argv[optind_s];
+        return string[1]; 
+      } else {
+        return '?';  /* argument missing */
+      }
+    case GETOPT_FOUND_WITHOUT_ARGUMENT:
+      return string[1];
+    case GETOPT_NOT_FOUND:
+    default:
+      return '?'; /* didn't find expected character */
+      break;
+    }
+  }
+
+  return -1;
+}