intl/uconv/ucvcn/nsISO2022CNToUnicode.h@97036ab72558 (annotated)
intl/uconv/ucvcn/nsISO2022CNToUnicode.h
Tue, 06 Jan 2015 21:39:09 +0100
- author
- Michael Schloh von Bennewitz <michael@schloh.com>
- date
- Tue, 06 Jan 2015 21:39:09 +0100
- branch
- TOR_BUG_9701
- changeset 8
- 97036ab72558
- permissions
- -rw-r--r--
Conditionally force memory storage according to privacy.thirdparty.isolate;
This solves Tor bug #9701, complying with disk avoidance documented in
https://www.torproject.org/projects/torbrowser/design/#disk-avoidance.
| michael@0 | 1 | /* -*- Mode: C; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*- */ |
| michael@0 | 2 | /* This Source Code Form is subject to the terms of the Mozilla Public |
| michael@0 | 3 | * License, v. 2.0. If a copy of the MPL was not distributed with this |
| michael@0 | 4 | * file, You can obtain one at http://mozilla.org/MPL/2.0/. */ |
| michael@0 | 5 | #ifndef nsISO2022CNToUnicode_h__ |
| michael@0 | 6 | #define nsISO2022CNToUnicode_h__ |
| michael@0 | 7 | #include "nsCOMPtr.h" |
| michael@0 | 8 | #include "nsUCSupport.h" |
| michael@0 | 9 | #include "mozilla/Telemetry.h" |
| michael@0 | 10 | |
| michael@0 | 11 | #define MBYTE 0x8e |
| michael@0 | 12 | #undef PMASK |
| michael@0 | 13 | #define PMASK 0xa0 |
| michael@0 | 14 | |
| michael@0 | 15 | #define SI 0x0f |
| michael@0 | 16 | #define SO 0x0e |
| michael@0 | 17 | #define ESC 0x1b |
| michael@0 | 18 | #define SS2 0x4e |
| michael@0 | 19 | #define SS3 0x4f |
| michael@0 | 20 | |
| michael@0 | 21 | class nsISO2022CNToUnicode : public nsBasicDecoderSupport |
| michael@0 | 22 | { |
| michael@0 | 23 | public: |
| michael@0 | 24 | nsISO2022CNToUnicode() : |
| michael@0 | 25 | mState(eState_ASCII), |
| michael@0 | 26 | mPlaneID(0), |
| michael@0 | 27 | mRunLength(0) |
| michael@0 | 28 | { |
| michael@0 | 29 | mozilla::Telemetry::Accumulate( |
| michael@0 | 30 | mozilla::Telemetry::DECODER_INSTANTIATED_ISO2022CN, true); |
| michael@0 | 31 | } |
| michael@0 | 32 | |
| michael@0 | 33 | virtual ~nsISO2022CNToUnicode() {} |
| michael@0 | 34 | |
| michael@0 | 35 | NS_IMETHOD Convert(const char *aSrc, int32_t * aSrcLength, |
| michael@0 | 36 | char16_t * aDest, int32_t * aDestLength) ; |
| michael@0 | 37 | |
| michael@0 | 38 | NS_IMETHOD GetMaxLength(const char * aSrc, int32_t aSrcLength, |
| michael@0 | 39 | int32_t * aDestLength) |
| michael@0 | 40 | { |
| michael@0 | 41 | *aDestLength = aSrcLength; |
| michael@0 | 42 | return NS_OK; |
| michael@0 | 43 | } |
| michael@0 | 44 | |
| michael@0 | 45 | NS_IMETHOD Reset() |
| michael@0 | 46 | { |
| michael@0 | 47 | mState = eState_ASCII; |
| michael@0 | 48 | mPlaneID = 0; |
| michael@0 | 49 | mRunLength = 0; |
| michael@0 | 50 | |
| michael@0 | 51 | return NS_OK; |
| michael@0 | 52 | } |
| michael@0 | 53 | |
| michael@0 | 54 | private: |
| michael@0 | 55 | // State Machine ID |
| michael@0 | 56 | enum { |
| michael@0 | 57 | eState_ASCII, |
| michael@0 | 58 | eState_ESC, // ESC |
| michael@0 | 59 | eState_ESC_24, // ESC $ |
| michael@0 | 60 | |
| michael@0 | 61 | eState_ESC_24_29, // ESC $ ) |
| michael@0 | 62 | eState_ESC_24_29_A, // ESC $ ) A |
| michael@0 | 63 | eState_GB2312_1980, // ESC $ ) A SO |
| michael@0 | 64 | eState_GB2312_1980_2ndbyte, // ESC $ ) A SO |
| michael@0 | 65 | eState_ESC_24_29_A_SO_SI, // ESC $ ) A SO SI |
| michael@0 | 66 | eState_ESC_24_29_G, // ESC $ ) G or H |
| michael@0 | 67 | eState_CNS11643_1, // ESC $ ) G SO |
| michael@0 | 68 | eState_CNS11643_1_2ndbyte, // ESC $ ) G SO |
| michael@0 | 69 | eState_ESC_24_29_G_SO_SI, // ESC $ ) G SO SI |
| michael@0 | 70 | |
| michael@0 | 71 | eState_ESC_24_2A, // ESC $ * |
| michael@0 | 72 | eState_ESC_24_2A_H, // ESC $ * H |
| michael@0 | 73 | eState_ESC_24_2A_H_ESC, // ESC $ * H ESC |
| michael@0 | 74 | eState_CNS11643_2, // ESC $ * H ESC SS2 |
| michael@0 | 75 | eState_CNS11643_2_2ndbyte, // ESC $ * H ESC SS2 |
| michael@0 | 76 | eState_ESC_24_2A_H_ESC_SS2_SI, // ESC $ * H ESC SS2 SI |
| michael@0 | 77 | eState_ESC_24_2A_H_ESC_SS2_SI_ESC, // ESC $ * H ESC SS2 SI ESC |
| michael@0 | 78 | |
| michael@0 | 79 | eState_ESC_24_2B, // ESC $ + |
| michael@0 | 80 | eState_ESC_24_2B_I, // ESC $ + I |
| michael@0 | 81 | eState_ESC_24_2B_I_ESC, // ESC $ + I ESC |
| michael@0 | 82 | eState_CNS11643_3, // ESC $ + I ESC SS3 |
| michael@0 | 83 | eState_CNS11643_3_2ndbyte, // ESC $ + I ESC SS3 |
| michael@0 | 84 | eState_ESC_24_2B_I_ESC_SS3_SI, // ESC $ + I ESC SI |
| michael@0 | 85 | eState_ESC_24_2B_I_ESC_SS3_SI_ESC, // ESC $ + I ESC SI ESC |
| michael@0 | 86 | eState_ERROR |
| michael@0 | 87 | } mState; |
| michael@0 | 88 | |
| michael@0 | 89 | char mData; |
| michael@0 | 90 | |
| michael@0 | 91 | // Plane number for CNS11643 code |
| michael@0 | 92 | int mPlaneID; |
| michael@0 | 93 | |
| michael@0 | 94 | // Length of non-ASCII run |
| michael@0 | 95 | uint32_t mRunLength; |
| michael@0 | 96 | |
| michael@0 | 97 | // Decoder handler |
| michael@0 | 98 | nsCOMPtr<nsIUnicodeDecoder> mGB2312_Decoder; |
| michael@0 | 99 | nsCOMPtr<nsIUnicodeDecoder> mEUCTW_Decoder; |
| michael@0 | 100 | |
| michael@0 | 101 | NS_IMETHOD GB2312_To_Unicode(unsigned char *aSrc, int32_t aSrcLength, |
| michael@0 | 102 | char16_t * aDest, int32_t * aDestLength) ; |
| michael@0 | 103 | |
| michael@0 | 104 | NS_IMETHOD EUCTW_To_Unicode(unsigned char *aSrc, int32_t aSrcLength, |
| michael@0 | 105 | char16_t * aDest, int32_t * aDestLength) ; |
| michael@0 | 106 | }; |
| michael@0 | 107 | #endif // nsISO2022CNToUnicode_h__ |
