Added base error.h definitions of status codes and prototype of string conversion function.

libguac/include/error.h

@@ -0,0 +1,101 @@
+
+/* ***** BEGIN LICENSE BLOCK *****
+ * Version: MPL 1.1/GPL 2.0/LGPL 2.1
+ *
+ * The contents of this file are subject to the Mozilla Public License Version
+ * 1.1 (the "License"); you may not use this file except in compliance with
+ * the License. You may obtain a copy of the License at
+ * http://www.mozilla.org/MPL/
+ *
+ * Software distributed under the License is distributed on an "AS IS" basis,
+ * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
+ * for the specific language governing rights and limitations under the
+ * License.
+ *
+ * The Original Code is libguac.
+ *
+ * The Initial Developer of the Original Code is
+ * Michael Jumper.
+ * Portions created by the Initial Developer are Copyright (C) 2010
+ * the Initial Developer. All Rights Reserved.
+ *
+ * Contributor(s):
+ *
+ * Alternatively, the contents of this file may be used under the terms of
+ * either the GNU General Public License Version 2 or later (the "GPL"), or
+ * the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
+ * in which case the provisions of the GPL or the LGPL are applicable instead
+ * of those above. If you wish to allow use of your version of this file only
+ * under the terms of either the GPL or the LGPL, and not to allow others to
+ * use your version of this file under the terms of the MPL, indicate your
+ * decision by deleting the provisions above and replace them with the notice
+ * and other provisions required by the GPL or the LGPL. If you do not delete
+ * the provisions above, a recipient may use your version of this file under
+ * the terms of any one of the MPL, the GPL or the LGPL.
+ *
+ * ***** END LICENSE BLOCK ***** */
+
+
+#ifndef _GUAC_ERROR_H
+#define _GUAC_ERROR_H
+
+/**
+ * Provides functions and structures required for handling return values and
+ * errors.
+ *
+ * @file error.h
+ */
+
+/**
+ * Return codes shared by all Guacamole functions which can fail.
+ */
+typedef enum guac_status_t {
+
+    /**
+     * No errors occurred and the operation was successful.
+     */
+    GUAC_STATUS_SUCCESS = 0,
+
+    /**
+     * Insufficient memory to complete the operation.
+     */
+    GUAC_STATUS_NO_MEMORY,
+
+    /**
+     * The end of the input stream associated with the operation
+     * has been reached.
+     */
+    GUAC_STATUS_NO_INPUT,
+
+    /**
+     * A timeout occurred while reading from the input stream associated
+     * with the operation.
+     */
+    GUAC_STATUS_INPUT_TIMEOUT,
+
+    /**
+     * An error prevented the operation from writing to its associated
+     * output stream.
+     */
+    GUAC_STATUS_OUTPUT_ERROR,
+
+    /**
+     * The operation could not be performed because an invalid argument was
+     * given.
+     */
+    GUAC_STATUS_BAD_ARGUMENT,
+
+    /**
+     * The state of the associated system prevents an operation from being
+     * performed which would otherwise be allowed.
+     */
+    GUAC_STATUS_BAD_STATE
+
+} guac_status_t;
+
+/**
+ * Returns a human-readable explanation of the status code given.
+ */
+const char* guac_status_string(guac_status_t status);
+
+#endif