зеркало из https://github.com/mozilla/pjs.git
148 строки
4.2 KiB
C++
148 строки
4.2 KiB
C++
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
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/* ***** BEGIN LICENSE BLOCK *****
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* Version: MPL 1.1/GPL 2.0/LGPL 2.1
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*
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* The contents of this file are subject to the Mozilla Public License Version
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* 1.1 (the "License"); you may not use this file except in compliance with
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* the License. You may obtain a copy of the License at
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* http://www.mozilla.org/MPL/
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*
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* Software distributed under the License is distributed on an "AS IS" basis,
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* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
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* for the specific language governing rights and limitations under the
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* License.
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*
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* The Original Code is mozilla.org code.
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*
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* The Initial Developer of the Original Code is
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* Netscape Communications Corporation.
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* Portions created by the Initial Developer are Copyright (C) 1998
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* the Initial Developer. All Rights Reserved.
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*
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* Contributor(s):
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*
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* Alternatively, the contents of this file may be used under the terms of
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* either of the GNU General Public License Version 2 or later (the "GPL"),
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* or the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
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* in which case the provisions of the GPL or the LGPL are applicable instead
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* of those above. If you wish to allow use of your version of this file only
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* under the terms of either the GPL or the LGPL, and not to allow others to
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* use your version of this file under the terms of the MPL, indicate your
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* decision by deleting the provisions above and replace them with the notice
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* and other provisions required by the GPL or the LGPL. If you do not delete
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* the provisions above, a recipient may use your version of this file under
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* the terms of any one of the MPL, the GPL or the LGPL.
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*
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* ***** END LICENSE BLOCK ***** */
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#include "nsProperties.h"
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#include "nsString.h"
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#include "nsCRT.h"
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////////////////////////////////////////////////////////////////////////////////
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NS_IMPL_AGGREGATED(nsProperties)
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NS_INTERFACE_MAP_BEGIN_AGGREGATED(nsProperties)
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NS_INTERFACE_MAP_ENTRY(nsIProperties)
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NS_INTERFACE_MAP_END
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NS_IMETHODIMP
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nsProperties::Get(const char* prop, const nsIID & uuid, void* *result)
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{
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NS_ENSURE_ARG(prop);
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nsCOMPtr<nsISupports> value;
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if (!nsProperties_HashBase::Get(prop, getter_AddRefs(value))) {
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return NS_ERROR_FAILURE;
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}
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return (value) ? value->QueryInterface(uuid, result) : NS_ERROR_NO_INTERFACE;
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}
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NS_IMETHODIMP
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nsProperties::Set(const char* prop, nsISupports* value)
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{
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NS_ENSURE_ARG(prop);
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return Put(prop, value) ? NS_OK : NS_ERROR_FAILURE;
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}
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NS_IMETHODIMP
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nsProperties::Undefine(const char* prop)
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{
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NS_ENSURE_ARG(prop);
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nsCOMPtr<nsISupports> value;
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if (!nsProperties_HashBase::Get(prop, getter_AddRefs(value)))
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return NS_ERROR_FAILURE;
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Remove(prop);
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return NS_OK;
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}
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NS_IMETHODIMP
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nsProperties::Has(const char* prop, PRBool *result)
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{
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NS_ENSURE_ARG(prop);
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nsCOMPtr<nsISupports> value;
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*result = nsProperties_HashBase::Get(prop,
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getter_AddRefs(value));
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return NS_OK;
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}
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struct GetKeysEnumData
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{
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char **keys;
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PRUint32 next;
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nsresult res;
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};
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PLDHashOperator
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GetKeysEnumerate(const char *key, nsISupports* data,
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void *arg)
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{
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GetKeysEnumData *gkedp = (GetKeysEnumData *)arg;
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gkedp->keys[gkedp->next] = nsCRT::strdup(key);
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if (!gkedp->keys[gkedp->next]) {
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gkedp->res = NS_ERROR_OUT_OF_MEMORY;
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return PL_DHASH_STOP;
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}
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gkedp->next++;
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return PL_DHASH_NEXT;
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}
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NS_IMETHODIMP
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nsProperties::GetKeys(PRUint32 *count, char ***keys)
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{
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NS_ENSURE_ARG(count);
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NS_ENSURE_ARG(keys);
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PRUint32 n = Count();
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char ** k = (char **) nsMemory::Alloc(n * sizeof(char *));
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NS_ENSURE_TRUE(k, NS_ERROR_OUT_OF_MEMORY);
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GetKeysEnumData gked;
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gked.keys = k;
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gked.next = 0;
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gked.res = NS_OK;
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EnumerateRead(GetKeysEnumerate, &gked);
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nsresult rv = gked.res;
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if (NS_FAILED(rv)) {
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// Free 'em all
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for (PRUint32 i = 0; i < gked.next; i++)
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nsMemory::Free(k[i]);
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nsMemory::Free(k);
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return rv;
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}
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*count = n;
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*keys = k;
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return NS_OK;
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}
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////////////////////////////////////////////////////////////////////////////////
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