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comparison: xpcom/ds/nsProperties.cpp
xpcom/ds/nsProperties.cpp
- changeset 0
- 6474c204b198
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| -1:000000000000 | 0:b64c216b9e26 |
|---|---|
| 1 /* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 4 -*- */ | |
| 2 /* This Source Code Form is subject to the terms of the Mozilla Public | |
| 3 * License, v. 2.0. If a copy of the MPL was not distributed with this | |
| 4 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */ | |
| 5 | |
| 6 #include "nsProperties.h" | |
| 7 | |
| 8 //////////////////////////////////////////////////////////////////////////////// | |
| 9 | |
| 10 NS_IMPL_AGGREGATED(nsProperties) | |
| 11 NS_INTERFACE_MAP_BEGIN_AGGREGATED(nsProperties) | |
| 12 NS_INTERFACE_MAP_ENTRY(nsIProperties) | |
| 13 NS_INTERFACE_MAP_END | |
| 14 | |
| 15 NS_IMETHODIMP | |
| 16 nsProperties::Get(const char* prop, const nsIID & uuid, void* *result) | |
| 17 { | |
| 18 if (NS_WARN_IF(!prop)) | |
| 19 return NS_ERROR_INVALID_ARG; | |
| 20 | |
| 21 nsCOMPtr<nsISupports> value; | |
| 22 if (!nsProperties_HashBase::Get(prop, getter_AddRefs(value))) { | |
| 23 return NS_ERROR_FAILURE; | |
| 24 } | |
| 25 return (value) ? value->QueryInterface(uuid, result) : NS_ERROR_NO_INTERFACE; | |
| 26 } | |
| 27 | |
| 28 NS_IMETHODIMP | |
| 29 nsProperties::Set(const char* prop, nsISupports* value) | |
| 30 { | |
| 31 if (NS_WARN_IF(!prop)) | |
| 32 return NS_ERROR_INVALID_ARG; | |
| 33 Put(prop, value); | |
| 34 return NS_OK; | |
| 35 } | |
| 36 | |
| 37 NS_IMETHODIMP | |
| 38 nsProperties::Undefine(const char* prop) | |
| 39 { | |
| 40 if (NS_WARN_IF(!prop)) | |
| 41 return NS_ERROR_INVALID_ARG; | |
| 42 | |
| 43 nsCOMPtr<nsISupports> value; | |
| 44 if (!nsProperties_HashBase::Get(prop, getter_AddRefs(value))) | |
| 45 return NS_ERROR_FAILURE; | |
| 46 | |
| 47 Remove(prop); | |
| 48 return NS_OK; | |
| 49 } | |
| 50 | |
| 51 NS_IMETHODIMP | |
| 52 nsProperties::Has(const char* prop, bool *result) | |
| 53 { | |
| 54 if (NS_WARN_IF(!prop)) | |
| 55 return NS_ERROR_INVALID_ARG; | |
| 56 | |
| 57 nsCOMPtr<nsISupports> value; | |
| 58 *result = nsProperties_HashBase::Get(prop, | |
| 59 getter_AddRefs(value)); | |
| 60 return NS_OK; | |
| 61 } | |
| 62 | |
| 63 struct GetKeysEnumData | |
| 64 { | |
| 65 char **keys; | |
| 66 uint32_t next; | |
| 67 nsresult res; | |
| 68 }; | |
| 69 | |
| 70 PLDHashOperator | |
| 71 GetKeysEnumerate(const char *key, nsISupports* data, | |
| 72 void *arg) | |
| 73 { | |
| 74 GetKeysEnumData *gkedp = (GetKeysEnumData *)arg; | |
| 75 gkedp->keys[gkedp->next] = strdup(key); | |
| 76 | |
| 77 if (!gkedp->keys[gkedp->next]) { | |
| 78 gkedp->res = NS_ERROR_OUT_OF_MEMORY; | |
| 79 return PL_DHASH_STOP; | |
| 80 } | |
| 81 | |
| 82 gkedp->next++; | |
| 83 return PL_DHASH_NEXT; | |
| 84 } | |
| 85 | |
| 86 NS_IMETHODIMP | |
| 87 nsProperties::GetKeys(uint32_t *count, char ***keys) | |
| 88 { | |
| 89 if (NS_WARN_IF(!count) || NS_WARN_IF(!keys)) | |
| 90 return NS_ERROR_INVALID_ARG; | |
| 91 | |
| 92 uint32_t n = Count(); | |
| 93 char ** k = (char **) nsMemory::Alloc(n * sizeof(char *)); | |
| 94 | |
| 95 GetKeysEnumData gked; | |
| 96 gked.keys = k; | |
| 97 gked.next = 0; | |
| 98 gked.res = NS_OK; | |
| 99 | |
| 100 EnumerateRead(GetKeysEnumerate, &gked); | |
| 101 | |
| 102 nsresult rv = gked.res; | |
| 103 if (NS_FAILED(rv)) { | |
| 104 // Free 'em all | |
| 105 for (uint32_t i = 0; i < gked.next; i++) | |
| 106 nsMemory::Free(k[i]); | |
| 107 nsMemory::Free(k); | |
| 108 return rv; | |
| 109 } | |
| 110 | |
| 111 *count = n; | |
| 112 *keys = k; | |
| 113 return NS_OK; | |
| 114 } | |
| 115 | |
| 116 //////////////////////////////////////////////////////////////////////////////// |
