The Tor Browser / file comparison
comparison: intl/lwbrk/public/nsILineBreaker.h
intl/lwbrk/public/nsILineBreaker.h
- branch
- TOR_BUG_9701
- changeset 8
- 97036ab72558
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| -1:000000000000 | 0:25ec0e2b2efe |
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| 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 #ifndef nsILineBreaker_h__ | |
| 6 #define nsILineBreaker_h__ | |
| 7 | |
| 8 #include "nsISupports.h" | |
| 9 | |
| 10 #include "nscore.h" | |
| 11 | |
| 12 #define NS_LINEBREAKER_NEED_MORE_TEXT -1 | |
| 13 | |
| 14 // {0x4b0b9e04-6ffb-4647-aa5f-2fa2ebd883e8} | |
| 15 #define NS_ILINEBREAKER_IID \ | |
| 16 {0x4b0b9e04, 0x6ffb, 0x4647, \ | |
| 17 {0xaa, 0x5f, 0x2f, 0xa2, 0xeb, 0xd8, 0x83, 0xe8}} | |
| 18 | |
| 19 class nsILineBreaker : public nsISupports | |
| 20 { | |
| 21 public: | |
| 22 NS_DECLARE_STATIC_IID_ACCESSOR(NS_ILINEBREAKER_IID) | |
| 23 | |
| 24 enum { | |
| 25 kWordBreak_Normal = 0, // default | |
| 26 kWordBreak_BreakAll = 1, // break all | |
| 27 kWordBreak_KeepAll = 2 // always keep | |
| 28 }; | |
| 29 | |
| 30 virtual int32_t Next( const char16_t* aText, uint32_t aLen, | |
| 31 uint32_t aPos) = 0; | |
| 32 | |
| 33 virtual int32_t Prev( const char16_t* aText, uint32_t aLen, | |
| 34 uint32_t aPos) = 0; | |
| 35 | |
| 36 // Call this on a word with whitespace at either end. We will apply JISx4051 | |
| 37 // rules to find breaks inside the word. aBreakBefore is set to the break- | |
| 38 // before status of each character; aBreakBefore[0] will always be false | |
| 39 // because we never return a break before the first character. | |
| 40 // aLength is the length of the aText array and also the length of the aBreakBefore | |
| 41 // output array. | |
| 42 virtual void GetJISx4051Breaks(const char16_t* aText, uint32_t aLength, | |
| 43 uint8_t aWordBreak, | |
| 44 uint8_t* aBreakBefore) = 0; | |
| 45 virtual void GetJISx4051Breaks(const uint8_t* aText, uint32_t aLength, | |
| 46 uint8_t aWordBreak, | |
| 47 uint8_t* aBreakBefore) = 0; | |
| 48 }; | |
| 49 | |
| 50 NS_DEFINE_STATIC_IID_ACCESSOR(nsILineBreaker, NS_ILINEBREAKER_IID) | |
| 51 | |
| 52 static inline bool | |
| 53 NS_IsSpace(char16_t u) | |
| 54 { | |
| 55 return u == 0x0020 || // SPACE | |
| 56 u == 0x0009 || // CHARACTER TABULATION | |
| 57 u == 0x000D || // CARRIAGE RETURN | |
| 58 u == 0x1680 || // OGHAM SPACE MARK | |
| 59 (0x2000 <= u && u <= 0x2006) || // EN QUAD, EM QUAD, EN SPACE, | |
| 60 // EM SPACE, THREE-PER-EM SPACE, | |
| 61 // FOUR-PER-SPACE, SIX-PER-EM SPACE, | |
| 62 (0x2008 <= u && u <= 0x200B) || // PUNCTUATION SPACE, THIN SPACE, | |
| 63 // HAIR SPACE, ZERO WIDTH SPACE | |
| 64 u == 0x205F; // MEDIUM MATHEMATICAL SPACE | |
| 65 } | |
| 66 | |
| 67 static inline bool | |
| 68 NS_NeedsPlatformNativeHandling(char16_t aChar) | |
| 69 { | |
| 70 return (0x0e01 <= aChar && aChar <= 0x0fff) || // Thai, Lao, Tibetan | |
| 71 (0x1780 <= aChar && aChar <= 0x17ff); // Khmer | |
| 72 } | |
| 73 | |
| 74 #endif /* nsILineBreaker_h__ */ |
