The Tor Browser / file comparison
comparison: dom/encoding/EncodingUtils.cpp
dom/encoding/EncodingUtils.cpp
- branch
- TOR_BUG_9701
- changeset 15
- b8a032363ba2
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| -1:000000000000 | 0:11a4752e80ea |
|---|---|
| 1 /* This Source Code Form is subject to the terms of the Mozilla Public | |
| 2 * License, v. 2.0. If a copy of the MPL was not distributed with this | |
| 3 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */ | |
| 4 | |
| 5 #include "mozilla/dom/EncodingUtils.h" | |
| 6 | |
| 7 #include "mozilla/ArrayUtils.h" // ArrayLength | |
| 8 #include "nsUConvPropertySearch.h" | |
| 9 #include "nsIUnicodeDecoder.h" | |
| 10 #include "nsIUnicodeEncoder.h" | |
| 11 #include "nsComponentManagerUtils.h" | |
| 12 | |
| 13 namespace mozilla { | |
| 14 namespace dom { | |
| 15 | |
| 16 static const char* labelsEncodings[][3] = { | |
| 17 #include "labelsencodings.properties.h" | |
| 18 }; | |
| 19 | |
| 20 bool | |
| 21 EncodingUtils::FindEncodingForLabel(const nsACString& aLabel, | |
| 22 nsACString& aOutEncoding) | |
| 23 { | |
| 24 // Save aLabel first because it may refer the same string as aOutEncoding. | |
| 25 nsCString label(aLabel); | |
| 26 | |
| 27 EncodingUtils::TrimSpaceCharacters(label); | |
| 28 if (label.IsEmpty()) { | |
| 29 aOutEncoding.Truncate(); | |
| 30 return false; | |
| 31 } | |
| 32 | |
| 33 ToLowerCase(label); | |
| 34 return NS_SUCCEEDED(nsUConvPropertySearch::SearchPropertyValue( | |
| 35 labelsEncodings, ArrayLength(labelsEncodings), label, aOutEncoding)); | |
| 36 } | |
| 37 | |
| 38 bool | |
| 39 EncodingUtils::IsAsciiCompatible(const nsACString& aPreferredName) | |
| 40 { | |
| 41 return !(aPreferredName.LowerCaseEqualsLiteral("utf-16") || | |
| 42 aPreferredName.LowerCaseEqualsLiteral("utf-16be") || | |
| 43 aPreferredName.LowerCaseEqualsLiteral("utf-16le") || | |
| 44 aPreferredName.LowerCaseEqualsLiteral("replacement") || | |
| 45 aPreferredName.LowerCaseEqualsLiteral("hz-gb-2312") || | |
| 46 aPreferredName.LowerCaseEqualsLiteral("utf-7") || | |
| 47 aPreferredName.LowerCaseEqualsLiteral("x-imap4-modified-utf7")); | |
| 48 } | |
| 49 | |
| 50 already_AddRefed<nsIUnicodeDecoder> | |
| 51 EncodingUtils::DecoderForEncoding(const nsACString& aEncoding) | |
| 52 { | |
| 53 nsAutoCString contractId(NS_UNICODEDECODER_CONTRACTID_BASE); | |
| 54 contractId.Append(aEncoding); | |
| 55 | |
| 56 nsCOMPtr<nsIUnicodeDecoder> decoder = do_CreateInstance(contractId.get()); | |
| 57 MOZ_ASSERT(decoder, "Tried to create decoder for unknown encoding."); | |
| 58 return decoder.forget(); | |
| 59 } | |
| 60 | |
| 61 already_AddRefed<nsIUnicodeEncoder> | |
| 62 EncodingUtils::EncoderForEncoding(const nsACString& aEncoding) | |
| 63 { | |
| 64 nsAutoCString contractId(NS_UNICODEENCODER_CONTRACTID_BASE); | |
| 65 contractId.Append(aEncoding); | |
| 66 | |
| 67 nsCOMPtr<nsIUnicodeEncoder> encoder = do_CreateInstance(contractId.get()); | |
| 68 MOZ_ASSERT(encoder, "Tried to create encoder for unknown encoding."); | |
| 69 return encoder.forget(); | |
| 70 } | |
| 71 | |
| 72 } // namespace dom | |
| 73 } // namespace mozilla |
