gecko-dev/xpcom/ds/nsProperties.cpp

93 lines
2.2 KiB
C++

/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* vim: set ts=8 sts=2 et sw=2 tw=80: */
/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
#include "nsProperties.h"
////////////////////////////////////////////////////////////////////////////////
NS_IMPL_AGGREGATED(nsProperties)
NS_INTERFACE_MAP_BEGIN_AGGREGATED(nsProperties)
NS_INTERFACE_MAP_ENTRY(nsIProperties)
NS_INTERFACE_MAP_END
NS_IMETHODIMP
nsProperties::Get(const char* prop, const nsIID& uuid, void** result)
{
if (NS_WARN_IF(!prop)) {
return NS_ERROR_INVALID_ARG;
}
nsCOMPtr<nsISupports> value;
if (!nsProperties_HashBase::Get(prop, getter_AddRefs(value))) {
return NS_ERROR_FAILURE;
}
return (value) ? value->QueryInterface(uuid, result) : NS_ERROR_NO_INTERFACE;
}
NS_IMETHODIMP
nsProperties::Set(const char* prop, nsISupports* value)
{
if (NS_WARN_IF(!prop)) {
return NS_ERROR_INVALID_ARG;
}
Put(prop, value);
return NS_OK;
}
NS_IMETHODIMP
nsProperties::Undefine(const char* prop)
{
if (NS_WARN_IF(!prop)) {
return NS_ERROR_INVALID_ARG;
}
return nsProperties_HashBase::Remove(prop) ? NS_OK : NS_ERROR_FAILURE;
}
NS_IMETHODIMP
nsProperties::Has(const char* prop, bool* result)
{
if (NS_WARN_IF(!prop)) {
return NS_ERROR_INVALID_ARG;
}
*result = nsProperties_HashBase::Contains(prop);
return NS_OK;
}
NS_IMETHODIMP
nsProperties::GetKeys(uint32_t* aCount, char*** aKeys)
{
if (NS_WARN_IF(!aCount) || NS_WARN_IF(!aKeys)) {
return NS_ERROR_INVALID_ARG;
}
uint32_t count = Count();
char** keys = (char**)moz_xmalloc(count * sizeof(char*));
uint32_t j = 0;
for (auto iter = this->Iter(); !iter.Done(); iter.Next()) {
const char* key = iter.Key();
keys[j] = strdup(key);
if (!keys[j]) {
// Free 'em all
for (uint32_t i = 0; i < j; i++) {
free(keys[i]);
}
free(keys);
return NS_ERROR_OUT_OF_MEMORY;
}
j++;
}
*aCount = count;
*aKeys = keys;
return NS_OK;
}
////////////////////////////////////////////////////////////////////////////////