The Tor Browser / file comparison
comparison: intl/locale/src/nsCollation.cpp
intl/locale/src/nsCollation.cpp
- branch
- TOR_BUG_3246
- changeset 7
- 129ffea94266
equal
deleted
inserted
replaced
| -1:000000000000 | 0:b5474534fa0a |
|---|---|
| 1 /* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */ | |
| 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 "nsCollation.h" | |
| 7 #include "nsCollationCID.h" | |
| 8 #include "nsUnicharUtils.h" | |
| 9 #include "prmem.h" | |
| 10 #include "nsIUnicodeEncoder.h" | |
| 11 #include "nsICharsetConverterManager.h" | |
| 12 #include "nsServiceManagerUtils.h" | |
| 13 | |
| 14 //////////////////////////////////////////////////////////////////////////////// | |
| 15 | |
| 16 NS_DEFINE_CID(kCollationCID, NS_COLLATION_CID); | |
| 17 | |
| 18 NS_IMPL_ISUPPORTS(nsCollationFactory, nsICollationFactory) | |
| 19 | |
| 20 nsresult nsCollationFactory::CreateCollation(nsILocale* locale, nsICollation** instancePtr) | |
| 21 { | |
| 22 // Create a collation interface instance. | |
| 23 // | |
| 24 nsICollation *inst; | |
| 25 nsresult res; | |
| 26 | |
| 27 res = CallCreateInstance(kCollationCID, &inst); | |
| 28 if (NS_FAILED(res)) { | |
| 29 return res; | |
| 30 } | |
| 31 | |
| 32 inst->Initialize(locale); | |
| 33 *instancePtr = inst; | |
| 34 | |
| 35 return res; | |
| 36 } | |
| 37 | |
| 38 //////////////////////////////////////////////////////////////////////////////// | |
| 39 | |
| 40 nsCollation::nsCollation() | |
| 41 { | |
| 42 MOZ_COUNT_CTOR(nsCollation); | |
| 43 } | |
| 44 | |
| 45 nsCollation::~nsCollation() | |
| 46 { | |
| 47 MOZ_COUNT_DTOR(nsCollation); | |
| 48 } | |
| 49 | |
| 50 nsresult nsCollation::NormalizeString(const nsAString& stringIn, nsAString& stringOut) | |
| 51 { | |
| 52 int32_t aLength = stringIn.Length(); | |
| 53 | |
| 54 if (aLength <= 64) { | |
| 55 char16_t conversionBuffer[64]; | |
| 56 ToLowerCase(PromiseFlatString(stringIn).get(), conversionBuffer, aLength); | |
| 57 stringOut.Assign(conversionBuffer, aLength); | |
| 58 } | |
| 59 else { | |
| 60 char16_t* conversionBuffer; | |
| 61 conversionBuffer = new char16_t[aLength]; | |
| 62 if (!conversionBuffer) { | |
| 63 return NS_ERROR_OUT_OF_MEMORY; | |
| 64 } | |
| 65 ToLowerCase(PromiseFlatString(stringIn).get(), conversionBuffer, aLength); | |
| 66 stringOut.Assign(conversionBuffer, aLength); | |
| 67 delete [] conversionBuffer; | |
| 68 } | |
| 69 return NS_OK; | |
| 70 } | |
| 71 | |
| 72 nsresult nsCollation::SetCharset(const char* aCharset) | |
| 73 { | |
| 74 NS_ENSURE_ARG_POINTER(aCharset); | |
| 75 | |
| 76 nsresult rv; | |
| 77 nsCOMPtr <nsICharsetConverterManager> charsetConverterManager = do_GetService(NS_CHARSETCONVERTERMANAGER_CONTRACTID, &rv); | |
| 78 if (NS_SUCCEEDED(rv)) { | |
| 79 rv = charsetConverterManager->GetUnicodeEncoder(aCharset, | |
| 80 getter_AddRefs(mEncoder)); | |
| 81 } | |
| 82 return rv; | |
| 83 } | |
| 84 | |
| 85 nsresult nsCollation::UnicodeToChar(const nsAString& aSrc, char** dst) | |
| 86 { | |
| 87 NS_ENSURE_ARG_POINTER(dst); | |
| 88 | |
| 89 nsresult res = NS_OK; | |
| 90 if (!mEncoder) | |
| 91 res = SetCharset("ISO-8859-1"); | |
| 92 | |
| 93 if (NS_SUCCEEDED(res)) { | |
| 94 const nsPromiseFlatString& src = PromiseFlatString(aSrc); | |
| 95 const char16_t *unichars = src.get(); | |
| 96 int32_t unicharLength = src.Length(); | |
| 97 int32_t dstLength; | |
| 98 res = mEncoder->GetMaxLength(unichars, unicharLength, &dstLength); | |
| 99 if (NS_SUCCEEDED(res)) { | |
| 100 int32_t bufLength = dstLength + 1 + 32; // extra 32 bytes for Finish() call | |
| 101 *dst = (char *) PR_Malloc(bufLength); | |
| 102 if (*dst) { | |
| 103 **dst = '\0'; | |
| 104 res = mEncoder->Convert(unichars, &unicharLength, *dst, &dstLength); | |
| 105 | |
| 106 if (NS_SUCCEEDED(res) || (NS_ERROR_UENC_NOMAPPING == res)) { | |
| 107 // Finishes the conversion. The converter has the possibility to write some | |
| 108 // extra data and flush its final state. | |
| 109 int32_t finishLength = bufLength - dstLength; // remaining unused buffer length | |
| 110 if (finishLength > 0) { | |
| 111 res = mEncoder->Finish((*dst + dstLength), &finishLength); | |
| 112 if (NS_SUCCEEDED(res)) { | |
| 113 (*dst)[dstLength + finishLength] = '\0'; | |
| 114 } | |
| 115 } | |
| 116 } | |
| 117 if (NS_FAILED(res)) { | |
| 118 PR_Free(*dst); | |
| 119 *dst = nullptr; | |
| 120 } | |
| 121 } | |
| 122 else { | |
| 123 res = NS_ERROR_OUT_OF_MEMORY; | |
| 124 } | |
| 125 } | |
| 126 } | |
| 127 | |
| 128 return res; | |
| 129 } | |
| 130 | |
| 131 | |
| 132 |
