1 files changed, 70 insertions, 0 deletions
diff --git a/wsutil/clopts_common.c b/wsutil/clopts_common.c
new file mode 100644
index 0000000000..8b1878758b
--- /dev/null
+++ b/wsutil/clopts_common.c
@@ -0,0 +1,70 @@
+/* clopts_common.c
+ * Handle command-line arguments common to various programs
+ *
+ * Wireshark - Network traffic analyzer
+ * By Gerald Combs <gerald@wireshark.org>
+ * Copyright 1998 Gerald Combs
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version 2
+ * of the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+ */
+
+#include "config.h"
+
+#include <stdio.h>
+#include <string.h>
+#include <stdlib.h>
+
+#include <wsutil/cmdarg_err.h>
+
+#include <wsutil/clopts_common.h>
+
+int
+get_natural_int(const char *string, const char *name)
+{
+  long number;
+  char *p;
+
+  number = strtol(string, &p, 10);
+  if (p == string || *p != '\0') {
+    cmdarg_err("The specified %s \"%s\" isn't a decimal number", name, string);
+    exit(1);
+  }
+  if (number < 0) {
+    cmdarg_err("The specified %s \"%s\" is a negative number", name, string);
+    exit(1);
+  }
+  if (number > INT_MAX) {
+    cmdarg_err("The specified %s \"%s\" is too large (greater than %d)",
+	       name, string, INT_MAX);
+    exit(1);
+  }
+  return (int)number;
+}
+
+
+int
+get_positive_int(const char *string, const char *name)
+{
+  int number;
+
+  number = get_natural_int(string, name);
+
+  if (number == 0) {
+    cmdarg_err("The specified %s is zero", name);
+    exit(1);
+  }
+
+  return number;
+}