dom/encoding/EncodingUtils.cpp@b8a032363ba2 (annotated)
dom/encoding/EncodingUtils.cpp
Thu, 22 Jan 2015 13:21:57 +0100
- author
- Michael Schloh von Bennewitz <michael@schloh.com>
- date
- Thu, 22 Jan 2015 13:21:57 +0100
- branch
- TOR_BUG_9701
- changeset 15
- b8a032363ba2
- permissions
- -rw-r--r--
Incorporate requested changes from Mozilla in review:
https://bugzilla.mozilla.org/show_bug.cgi?id=1123480#c6
| michael@0 | 1 | /* This Source Code Form is subject to the terms of the Mozilla Public |
| michael@0 | 2 | * License, v. 2.0. If a copy of the MPL was not distributed with this |
| michael@0 | 3 | * file, You can obtain one at http://mozilla.org/MPL/2.0/. */ |
| michael@0 | 4 | |
| michael@0 | 5 | #include "mozilla/dom/EncodingUtils.h" |
| michael@0 | 6 | |
| michael@0 | 7 | #include "mozilla/ArrayUtils.h" // ArrayLength |
| michael@0 | 8 | #include "nsUConvPropertySearch.h" |
| michael@0 | 9 | #include "nsIUnicodeDecoder.h" |
| michael@0 | 10 | #include "nsIUnicodeEncoder.h" |
| michael@0 | 11 | #include "nsComponentManagerUtils.h" |
| michael@0 | 12 | |
| michael@0 | 13 | namespace mozilla { |
| michael@0 | 14 | namespace dom { |
| michael@0 | 15 | |
| michael@0 | 16 | static const char* labelsEncodings[][3] = { |
| michael@0 | 17 | #include "labelsencodings.properties.h" |
| michael@0 | 18 | }; |
| michael@0 | 19 | |
| michael@0 | 20 | bool |
| michael@0 | 21 | EncodingUtils::FindEncodingForLabel(const nsACString& aLabel, |
| michael@0 | 22 | nsACString& aOutEncoding) |
| michael@0 | 23 | { |
| michael@0 | 24 | // Save aLabel first because it may refer the same string as aOutEncoding. |
| michael@0 | 25 | nsCString label(aLabel); |
| michael@0 | 26 | |
| michael@0 | 27 | EncodingUtils::TrimSpaceCharacters(label); |
| michael@0 | 28 | if (label.IsEmpty()) { |
| michael@0 | 29 | aOutEncoding.Truncate(); |
| michael@0 | 30 | return false; |
| michael@0 | 31 | } |
| michael@0 | 32 | |
| michael@0 | 33 | ToLowerCase(label); |
| michael@0 | 34 | return NS_SUCCEEDED(nsUConvPropertySearch::SearchPropertyValue( |
| michael@0 | 35 | labelsEncodings, ArrayLength(labelsEncodings), label, aOutEncoding)); |
| michael@0 | 36 | } |
| michael@0 | 37 | |
| michael@0 | 38 | bool |
| michael@0 | 39 | EncodingUtils::IsAsciiCompatible(const nsACString& aPreferredName) |
| michael@0 | 40 | { |
| michael@0 | 41 | return !(aPreferredName.LowerCaseEqualsLiteral("utf-16") || |
| michael@0 | 42 | aPreferredName.LowerCaseEqualsLiteral("utf-16be") || |
| michael@0 | 43 | aPreferredName.LowerCaseEqualsLiteral("utf-16le") || |
| michael@0 | 44 | aPreferredName.LowerCaseEqualsLiteral("replacement") || |
| michael@0 | 45 | aPreferredName.LowerCaseEqualsLiteral("hz-gb-2312") || |
| michael@0 | 46 | aPreferredName.LowerCaseEqualsLiteral("utf-7") || |
| michael@0 | 47 | aPreferredName.LowerCaseEqualsLiteral("x-imap4-modified-utf7")); |
| michael@0 | 48 | } |
| michael@0 | 49 | |
| michael@0 | 50 | already_AddRefed<nsIUnicodeDecoder> |
| michael@0 | 51 | EncodingUtils::DecoderForEncoding(const nsACString& aEncoding) |
| michael@0 | 52 | { |
| michael@0 | 53 | nsAutoCString contractId(NS_UNICODEDECODER_CONTRACTID_BASE); |
| michael@0 | 54 | contractId.Append(aEncoding); |
| michael@0 | 55 | |
| michael@0 | 56 | nsCOMPtr<nsIUnicodeDecoder> decoder = do_CreateInstance(contractId.get()); |
| michael@0 | 57 | MOZ_ASSERT(decoder, "Tried to create decoder for unknown encoding."); |
| michael@0 | 58 | return decoder.forget(); |
| michael@0 | 59 | } |
| michael@0 | 60 | |
| michael@0 | 61 | already_AddRefed<nsIUnicodeEncoder> |
| michael@0 | 62 | EncodingUtils::EncoderForEncoding(const nsACString& aEncoding) |
| michael@0 | 63 | { |
| michael@0 | 64 | nsAutoCString contractId(NS_UNICODEENCODER_CONTRACTID_BASE); |
| michael@0 | 65 | contractId.Append(aEncoding); |
| michael@0 | 66 | |
| michael@0 | 67 | nsCOMPtr<nsIUnicodeEncoder> encoder = do_CreateInstance(contractId.get()); |
| michael@0 | 68 | MOZ_ASSERT(encoder, "Tried to create encoder for unknown encoding."); |
| michael@0 | 69 | return encoder.forget(); |
| michael@0 | 70 | } |
| michael@0 | 71 | |
| michael@0 | 72 | } // namespace dom |
| michael@0 | 73 | } // namespace mozilla |
