Added nsIErrorService to map from nsresult codes to string bundles and keys for error messages.

git-svn-id: svn://10.0.0.236/trunk@74636 18797224-902f-48f8-a5cc-f745e15eee43

mozilla/xpcom/base/nsErrorService.cpp

@@ -0,0 +1,142 @@
+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*-
+ *
+ * The contents of this file are subject to the Netscape 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/NPL/
+ *
+ * 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 mozilla.org code.
+ *
+ * The Initial Developer of the Original Code is Netscape
+ * Communications Corporation.  Portions created by Netscape are
+ * Copyright (C) 1998 Netscape Communications Corporation. All
+ * Rights Reserved.
+ *
+ * Contributor(s): 
+ */
+
+#include "nsErrorService.h"
+#include "nsCRT.h"
+
+static void*
+CloneCString(nsHashKey *aKey, void *aData, void* closure)
+{
+  return nsCRT::strdup((const char*)aData);
+}
+
+static PRBool
+DeleteCString(nsHashKey *aKey, void *aData, void* closure)
+{
+  nsCRT::free((char*)aData);
+  return PR_TRUE;
+}
+
+nsInt2StrHashtable::nsInt2StrHashtable()
+    : mHashtable(CloneCString, nsnull, DeleteCString, nsnull, 16)
+{
+}
+
+nsInt2StrHashtable::~nsInt2StrHashtable()
+{
+}
+
+nsresult
+nsInt2StrHashtable::Put(PRUint32 key, const char* aData)
+{
+  char* value = nsCRT::strdup(aData);
+  if (value == nsnull)
+    return NS_ERROR_OUT_OF_MEMORY;
+  nsVoidKey k((void*)key);
+  char* oldValue = (char*)mHashtable.Put(&k, value);
+  if (oldValue)
+    nsCRT::free(oldValue);
+  return NS_OK;
+}
+
+char* 
+nsInt2StrHashtable::Get(PRUint32 key)
+{
+  nsVoidKey k((void*)key);
+  const char* value = (const char*)mHashtable.Get(&k);
+  if (value == nsnull)
+    return nsnull;
+  return nsCRT::strdup(value);
+}
+
+nsresult
+nsInt2StrHashtable::Remove(PRUint32 key)
+{
+  nsVoidKey k((void*)key);
+  char* oldValue = (char*)mHashtable.Remove(&k);
+  if (oldValue)
+    nsCRT::free(oldValue);
+  return NS_OK;
+}
+
+////////////////////////////////////////////////////////////////////////////////
+
+NS_IMPL_ISUPPORTS1(nsErrorService, nsIErrorService)
+
+NS_METHOD
+nsErrorService::Create(nsISupports* outer, const nsIID& aIID, void* *aInstancePtr)
+{
+    NS_ENSURE_NO_AGGREGATION(outer);
+    nsErrorService* serv = new nsErrorService();
+    if (serv == nsnull)
+        return NS_ERROR_OUT_OF_MEMORY;
+    NS_ADDREF(serv);
+    nsresult rv = serv->QueryInterface(aIID, aInstancePtr);
+    NS_RELEASE(serv);
+    return rv;
+}
+
+NS_IMETHODIMP
+nsErrorService::RegisterErrorStringBundle(PRInt16 errorModule, const char *stringBundleURL)
+{
+    return mErrorStringBundleURLMap.Put(errorModule, stringBundleURL);
+}
+
+NS_IMETHODIMP
+nsErrorService::UnregisterErrorStringBundle(PRInt16 errorModule)
+{
+    return mErrorStringBundleURLMap.Remove(errorModule);
+}
+
+NS_IMETHODIMP
+nsErrorService::GetErrorStringBundle(PRInt16 errorModule, char **result)
+{
+    char* value = mErrorStringBundleURLMap.Get(errorModule);
+    if (value == nsnull)
+        return NS_ERROR_OUT_OF_MEMORY;
+    *result = value;
+    return NS_OK;
+}
+
+NS_IMETHODIMP
+nsErrorService::RegisterErrorStringBundleKey(nsresult error, const char *stringBundleKey)
+{
+    return mErrorStringBundleKeyMap.Put(NS_ERROR_GET_CODE(error), stringBundleKey);
+}
+
+NS_IMETHODIMP
+nsErrorService::UnregisterErrorStringBundleKey(nsresult error)
+{
+    return mErrorStringBundleKeyMap.Remove(NS_ERROR_GET_CODE(error));
+}
+
+NS_IMETHODIMP
+nsErrorService::GetErrorStringBundleKey(nsresult error, char **result)
+{
+    char* value = mErrorStringBundleKeyMap.Get(NS_ERROR_GET_CODE(error));
+    if (value == nsnull)
+        return NS_ERROR_OUT_OF_MEMORY;
+    *result = value;
+    return NS_OK;
+}
+
+////////////////////////////////////////////////////////////////////////////////