intl/uconv/ucvcn/nsISO2022CNToUnicode.h@97036ab72558
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.
1 /* -*- Mode: C; tab-width: 4; 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 #ifndef nsISO2022CNToUnicode_h__
6 #define nsISO2022CNToUnicode_h__
7 #include "nsCOMPtr.h"
8 #include "nsUCSupport.h"
9 #include "mozilla/Telemetry.h"
11 #define MBYTE 0x8e
12 #undef PMASK
13 #define PMASK 0xa0
15 #define SI 0x0f
16 #define SO 0x0e
17 #define ESC 0x1b
18 #define SS2 0x4e
19 #define SS3 0x4f
21 class nsISO2022CNToUnicode : public nsBasicDecoderSupport
22 {
23 public:
24 nsISO2022CNToUnicode() :
25 mState(eState_ASCII),
26 mPlaneID(0),
27 mRunLength(0)
28 {
29 mozilla::Telemetry::Accumulate(
30 mozilla::Telemetry::DECODER_INSTANTIATED_ISO2022CN, true);
31 }
33 virtual ~nsISO2022CNToUnicode() {}
35 NS_IMETHOD Convert(const char *aSrc, int32_t * aSrcLength,
36 char16_t * aDest, int32_t * aDestLength) ;
38 NS_IMETHOD GetMaxLength(const char * aSrc, int32_t aSrcLength,
39 int32_t * aDestLength)
40 {
41 *aDestLength = aSrcLength;
42 return NS_OK;
43 }
45 NS_IMETHOD Reset()
46 {
47 mState = eState_ASCII;
48 mPlaneID = 0;
49 mRunLength = 0;
51 return NS_OK;
52 }
54 private:
55 // State Machine ID
56 enum {
57 eState_ASCII,
58 eState_ESC, // ESC
59 eState_ESC_24, // ESC $
61 eState_ESC_24_29, // ESC $ )
62 eState_ESC_24_29_A, // ESC $ ) A
63 eState_GB2312_1980, // ESC $ ) A SO
64 eState_GB2312_1980_2ndbyte, // ESC $ ) A SO
65 eState_ESC_24_29_A_SO_SI, // ESC $ ) A SO SI
66 eState_ESC_24_29_G, // ESC $ ) G or H
67 eState_CNS11643_1, // ESC $ ) G SO
68 eState_CNS11643_1_2ndbyte, // ESC $ ) G SO
69 eState_ESC_24_29_G_SO_SI, // ESC $ ) G SO SI
71 eState_ESC_24_2A, // ESC $ *
72 eState_ESC_24_2A_H, // ESC $ * H
73 eState_ESC_24_2A_H_ESC, // ESC $ * H ESC
74 eState_CNS11643_2, // ESC $ * H ESC SS2
75 eState_CNS11643_2_2ndbyte, // ESC $ * H ESC SS2
76 eState_ESC_24_2A_H_ESC_SS2_SI, // ESC $ * H ESC SS2 SI
77 eState_ESC_24_2A_H_ESC_SS2_SI_ESC, // ESC $ * H ESC SS2 SI ESC
79 eState_ESC_24_2B, // ESC $ +
80 eState_ESC_24_2B_I, // ESC $ + I
81 eState_ESC_24_2B_I_ESC, // ESC $ + I ESC
82 eState_CNS11643_3, // ESC $ + I ESC SS3
83 eState_CNS11643_3_2ndbyte, // ESC $ + I ESC SS3
84 eState_ESC_24_2B_I_ESC_SS3_SI, // ESC $ + I ESC SI
85 eState_ESC_24_2B_I_ESC_SS3_SI_ESC, // ESC $ + I ESC SI ESC
86 eState_ERROR
87 } mState;
89 char mData;
91 // Plane number for CNS11643 code
92 int mPlaneID;
94 // Length of non-ASCII run
95 uint32_t mRunLength;
97 // Decoder handler
98 nsCOMPtr<nsIUnicodeDecoder> mGB2312_Decoder;
99 nsCOMPtr<nsIUnicodeDecoder> mEUCTW_Decoder;
101 NS_IMETHOD GB2312_To_Unicode(unsigned char *aSrc, int32_t aSrcLength,
102 char16_t * aDest, int32_t * aDestLength) ;
104 NS_IMETHOD EUCTW_To_Unicode(unsigned char *aSrc, int32_t aSrcLength,
105 char16_t * aDest, int32_t * aDestLength) ;
106 };
107 #endif // nsISO2022CNToUnicode_h__
