adding zephyr-im master branch

zwgc/string_dictionary_aux.h

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+/* This file is part of the Project Athena Zephyr Notification System.
+ * It is one of the source files comprising zwgc, the Zephyr WindowGram
+ * client.
+ *
+ *      Created by:     Marc Horowitz <marc@athena.mit.edu>
+ *
+ *      $Id$
+ *
+ *      Copyright (c) 1989 by the Massachusetts Institute of Technology.
+ *      For copying and distribution information, see the file
+ *      "mit-copyright.h".
+ */
+
+#ifndef string_dictionary_aux_MODULE
+#define string_dictionary_aux_MODULE
+
+#include "new_memory.h"
+#include "string_dictionary.h"
+
+/*
+ *    void string_dictionary_Set(string_dictionary d, string key,string value):
+ *        Modifies: d
+ *        Effects: Binds key to value in d.  Automatically free's the
+ *                 previous value of key, if any.  Value is copied on the
+ *                 heap.
+ */
+
+extern void string__dictionary_Set(string_dictionary, string, string);
+#ifdef DEBUG_MEMORY
+#define string_dictionary_Set(a,b,c)         (set_module(__FILE__,__LINE__),\
+					      string__dictionary_Set(a,b,c))
+#else
+#define string_dictionary_Set(a,b,c)         string__dictionary_Set(a,b,c)
+#endif
+
+/*
+ *    char *string_dictionary_Fetch(string_dictionary d, string key)
+ *        Effects: If key is not bound in d, returns 0.  Otherwise,
+ *                 returns the value that key is bound to.  
+ *                 Note that the returned string if any should not be
+ *                 freed or modified in any way.  Note also that it may
+ *                 disappear later if key is rebound.
+ */
+
+extern char *string_dictionary_Fetch(string_dictionary,
+				     string);
+
+/*
+ *    void string_dictionary_SafeDestroy(string_dictionary d)
+ *        Modifies: d
+ *        Effects: Like string_dictionary_Destroy except first frees
+ *                 all value's in the dictionary.
+ */
+
+extern void string_dictionary_SafeDestroy(string_dictionary);
+
+#endif