зеркало из https://github.com/mozilla/gecko-dev.git
122 строки
2.6 KiB
C++
122 строки
2.6 KiB
C++
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
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/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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#include "nsProperties.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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if (NS_WARN_IF(!prop)) {
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return NS_ERROR_INVALID_ARG;
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}
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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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if (NS_WARN_IF(!prop)) {
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return NS_ERROR_INVALID_ARG;
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}
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Put(prop, value);
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return NS_OK;
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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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if (NS_WARN_IF(!prop)) {
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return NS_ERROR_INVALID_ARG;
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}
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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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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, bool* result)
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{
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if (NS_WARN_IF(!prop)) {
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return NS_ERROR_INVALID_ARG;
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}
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nsCOMPtr<nsISupports> value;
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*result = nsProperties_HashBase::Get(prop, 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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uint32_t next;
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nsresult res;
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};
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PLDHashOperator
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GetKeysEnumerate(const char* aKey, nsISupports* aData, void* aArg)
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{
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GetKeysEnumData* gkedp = (GetKeysEnumData*)aArg;
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gkedp->keys[gkedp->next] = strdup(aKey);
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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(uint32_t* aCount, char*** aKeys)
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{
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if (NS_WARN_IF(!aCount) || NS_WARN_IF(!aKeys)) {
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return NS_ERROR_INVALID_ARG;
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}
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uint32_t n = Count();
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char** k = (char**)nsMemory::Alloc(n * sizeof(char*));
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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 (uint32_t i = 0; i < gked.next; i++) {
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nsMemory::Free(k[i]);
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}
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nsMemory::Free(k);
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return rv;
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}
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*aCount = n;
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*aKeys = k;
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return NS_OK;
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}
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////////////////////////////////////////////////////////////////////////////////
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