1.1 --- /dev/null Thu Jan 01 00:00:00 1970 +0000
1.2 +++ b/xpcom/ds/nsProperties.cpp Wed Dec 31 06:09:35 2014 +0100
1.3 @@ -0,0 +1,116 @@
1.4 +/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
1.5 +/* This Source Code Form is subject to the terms of the Mozilla Public
1.6 + * License, v. 2.0. If a copy of the MPL was not distributed with this
1.7 + * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
1.8 +
1.9 +#include "nsProperties.h"
1.10 +
1.11 +////////////////////////////////////////////////////////////////////////////////
1.12 +
1.13 +NS_IMPL_AGGREGATED(nsProperties)
1.14 +NS_INTERFACE_MAP_BEGIN_AGGREGATED(nsProperties)
1.15 + NS_INTERFACE_MAP_ENTRY(nsIProperties)
1.16 +NS_INTERFACE_MAP_END
1.17 +
1.18 +NS_IMETHODIMP
1.19 +nsProperties::Get(const char* prop, const nsIID & uuid, void* *result)
1.20 +{
1.21 + if (NS_WARN_IF(!prop))
1.22 + return NS_ERROR_INVALID_ARG;
1.23 +
1.24 + nsCOMPtr<nsISupports> value;
1.25 + if (!nsProperties_HashBase::Get(prop, getter_AddRefs(value))) {
1.26 + return NS_ERROR_FAILURE;
1.27 + }
1.28 + return (value) ? value->QueryInterface(uuid, result) : NS_ERROR_NO_INTERFACE;
1.29 +}
1.30 +
1.31 +NS_IMETHODIMP
1.32 +nsProperties::Set(const char* prop, nsISupports* value)
1.33 +{
1.34 + if (NS_WARN_IF(!prop))
1.35 + return NS_ERROR_INVALID_ARG;
1.36 + Put(prop, value);
1.37 + return NS_OK;
1.38 +}
1.39 +
1.40 +NS_IMETHODIMP
1.41 +nsProperties::Undefine(const char* prop)
1.42 +{
1.43 + if (NS_WARN_IF(!prop))
1.44 + return NS_ERROR_INVALID_ARG;
1.45 +
1.46 + nsCOMPtr<nsISupports> value;
1.47 + if (!nsProperties_HashBase::Get(prop, getter_AddRefs(value)))
1.48 + return NS_ERROR_FAILURE;
1.49 +
1.50 + Remove(prop);
1.51 + return NS_OK;
1.52 +}
1.53 +
1.54 +NS_IMETHODIMP
1.55 +nsProperties::Has(const char* prop, bool *result)
1.56 +{
1.57 + if (NS_WARN_IF(!prop))
1.58 + return NS_ERROR_INVALID_ARG;
1.59 +
1.60 + nsCOMPtr<nsISupports> value;
1.61 + *result = nsProperties_HashBase::Get(prop,
1.62 + getter_AddRefs(value));
1.63 + return NS_OK;
1.64 +}
1.65 +
1.66 +struct GetKeysEnumData
1.67 +{
1.68 + char **keys;
1.69 + uint32_t next;
1.70 + nsresult res;
1.71 +};
1.72 +
1.73 + PLDHashOperator
1.74 +GetKeysEnumerate(const char *key, nsISupports* data,
1.75 + void *arg)
1.76 +{
1.77 + GetKeysEnumData *gkedp = (GetKeysEnumData *)arg;
1.78 + gkedp->keys[gkedp->next] = strdup(key);
1.79 +
1.80 + if (!gkedp->keys[gkedp->next]) {
1.81 + gkedp->res = NS_ERROR_OUT_OF_MEMORY;
1.82 + return PL_DHASH_STOP;
1.83 + }
1.84 +
1.85 + gkedp->next++;
1.86 + return PL_DHASH_NEXT;
1.87 +}
1.88 +
1.89 +NS_IMETHODIMP
1.90 +nsProperties::GetKeys(uint32_t *count, char ***keys)
1.91 +{
1.92 + if (NS_WARN_IF(!count) || NS_WARN_IF(!keys))
1.93 + return NS_ERROR_INVALID_ARG;
1.94 +
1.95 + uint32_t n = Count();
1.96 + char ** k = (char **) nsMemory::Alloc(n * sizeof(char *));
1.97 +
1.98 + GetKeysEnumData gked;
1.99 + gked.keys = k;
1.100 + gked.next = 0;
1.101 + gked.res = NS_OK;
1.102 +
1.103 + EnumerateRead(GetKeysEnumerate, &gked);
1.104 +
1.105 + nsresult rv = gked.res;
1.106 + if (NS_FAILED(rv)) {
1.107 + // Free 'em all
1.108 + for (uint32_t i = 0; i < gked.next; i++)
1.109 + nsMemory::Free(k[i]);
1.110 + nsMemory::Free(k);
1.111 + return rv;
1.112 + }
1.113 +
1.114 + *count = n;
1.115 + *keys = k;
1.116 + return NS_OK;
1.117 +}
1.118 +
1.119 +////////////////////////////////////////////////////////////////////////////////
