1 files changed, 107 insertions, 0 deletions
diff --git a/Source/Swig/getopt.c b/Source/Swig/getopt.c
new file mode 100644
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--- /dev/null
+++ b/Source/Swig/getopt.c
@@ -0,0 +1,107 @@
+/* ----------------------------------------------------------------------------- 
+ * See the LICENSE file for information on copyright, usage and redistribution
+ * of SWIG, and the README file for authors - http://www.swig.org/release.html.
+ *
+ * getopt.c
+ *
+ * Handles the parsing of command line options.  This is particularly nasty
+ * compared to other utilities given that command line options can potentially
+ * be read by many different modules within SWIG.  Thus, in order to make sure
+ * there are no unrecognized options, each module is required to "mark"
+ * the options that it uses.  Afterwards, we can make a quick scan to make
+ * sure there are no unmarked options.
+ * 
+ * TODO: 
+ *     - This module needs to be modified so that it doesn't call exit().
+ *       Should have cleaner error handling in general.
+ * ----------------------------------------------------------------------------- */
+
+char cvsroot_getopt_c[] = "$Id: getopt.c 10926 2008-11-11 22:17:40Z wsfulton $";
+
+#include "swig.h"
+
+static char **args;
+static int numargs;
+static int *marked;
+
+/* -----------------------------------------------------------------------------
+ * Swig_init_args()
+ * 
+ * Initialize the argument list handler.
+ * ----------------------------------------------------------------------------- */
+
+void Swig_init_args(int argc, char **argv) {
+  int i;
+  assert(argc > 0);
+  assert(argv);
+
+  numargs = argc;
+  args = argv;
+  marked = (int *) malloc(numargs * sizeof(int));
+  for (i = 0; i < argc; i++) {
+    marked[i] = 0;
+  }
+  marked[0] = 1;
+}
+
+/* -----------------------------------------------------------------------------
+ * Swig_mark_arg()
+ * 
+ * Marks an argument as being parsed.
+ * ----------------------------------------------------------------------------- */
+
+void Swig_mark_arg(int n) {
+  assert(marked);
+  assert((n >= 0) && (n < numargs));
+  marked[n] = 1;
+}
+
+/* -----------------------------------------------------------------------------
+ * Swig_check_marked()
+ *
+ * Checks to see if argument has been picked up.
+ * ----------------------------------------------------------------------------- */
+
+int Swig_check_marked(int n) {
+  assert((n >= 0) && (n < numargs));
+  return marked[n];
+}
+
+/* -----------------------------------------------------------------------------
+ * Swig_check_options()
+ * 
+ * Checkers for unprocessed command line options and errors.
+ * ----------------------------------------------------------------------------- */
+
+void Swig_check_options(int check_input) {
+  int error = 0;
+  int i;
+  int max = check_input ? numargs - 1 : numargs;
+  assert(marked);
+  for (i = 1; i < max; i++) {
+    if (!marked[i]) {
+      Printf(stderr, "swig error : Unrecognized option %s\n", args[i]);
+      error = 1;
+    }
+  }
+  if (error) {
+    Printf(stderr, "Use 'swig -help' for available options.\n");
+    exit(1);
+  }
+  if (check_input && marked[numargs - 1]) {
+    Printf(stderr, "Must specify an input file. Use -help for available options.\n");
+    exit(1);
+  }
+}
+
+/* -----------------------------------------------------------------------------
+ * Swig_arg_error()
+ * 
+ * Generates a generic error message and exits.
+ * ----------------------------------------------------------------------------- */
+
+void Swig_arg_error(void) {
+  Printf(stderr, "SWIG : Unable to parse command line options.\n");
+  Printf(stderr, "Use 'swig -help' for available options.\n");
+  exit(1);
+}