intl/lwbrk/public/nsILineBreaker.h@b8a032363ba2 (annotated)
intl/lwbrk/public/nsILineBreaker.h
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 | /* -*- Mode: C++; tab-width: 2; 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 nsILineBreaker_h__ |
| michael@0 | 6 | #define nsILineBreaker_h__ |
| michael@0 | 7 | |
| michael@0 | 8 | #include "nsISupports.h" |
| michael@0 | 9 | |
| michael@0 | 10 | #include "nscore.h" |
| michael@0 | 11 | |
| michael@0 | 12 | #define NS_LINEBREAKER_NEED_MORE_TEXT -1 |
| michael@0 | 13 | |
| michael@0 | 14 | // {0x4b0b9e04-6ffb-4647-aa5f-2fa2ebd883e8} |
| michael@0 | 15 | #define NS_ILINEBREAKER_IID \ |
| michael@0 | 16 | {0x4b0b9e04, 0x6ffb, 0x4647, \ |
| michael@0 | 17 | {0xaa, 0x5f, 0x2f, 0xa2, 0xeb, 0xd8, 0x83, 0xe8}} |
| michael@0 | 18 | |
| michael@0 | 19 | class nsILineBreaker : public nsISupports |
| michael@0 | 20 | { |
| michael@0 | 21 | public: |
| michael@0 | 22 | NS_DECLARE_STATIC_IID_ACCESSOR(NS_ILINEBREAKER_IID) |
| michael@0 | 23 | |
| michael@0 | 24 | enum { |
| michael@0 | 25 | kWordBreak_Normal = 0, // default |
| michael@0 | 26 | kWordBreak_BreakAll = 1, // break all |
| michael@0 | 27 | kWordBreak_KeepAll = 2 // always keep |
| michael@0 | 28 | }; |
| michael@0 | 29 | |
| michael@0 | 30 | virtual int32_t Next( const char16_t* aText, uint32_t aLen, |
| michael@0 | 31 | uint32_t aPos) = 0; |
| michael@0 | 32 | |
| michael@0 | 33 | virtual int32_t Prev( const char16_t* aText, uint32_t aLen, |
| michael@0 | 34 | uint32_t aPos) = 0; |
| michael@0 | 35 | |
| michael@0 | 36 | // Call this on a word with whitespace at either end. We will apply JISx4051 |
| michael@0 | 37 | // rules to find breaks inside the word. aBreakBefore is set to the break- |
| michael@0 | 38 | // before status of each character; aBreakBefore[0] will always be false |
| michael@0 | 39 | // because we never return a break before the first character. |
| michael@0 | 40 | // aLength is the length of the aText array and also the length of the aBreakBefore |
| michael@0 | 41 | // output array. |
| michael@0 | 42 | virtual void GetJISx4051Breaks(const char16_t* aText, uint32_t aLength, |
| michael@0 | 43 | uint8_t aWordBreak, |
| michael@0 | 44 | uint8_t* aBreakBefore) = 0; |
| michael@0 | 45 | virtual void GetJISx4051Breaks(const uint8_t* aText, uint32_t aLength, |
| michael@0 | 46 | uint8_t aWordBreak, |
| michael@0 | 47 | uint8_t* aBreakBefore) = 0; |
| michael@0 | 48 | }; |
| michael@0 | 49 | |
| michael@0 | 50 | NS_DEFINE_STATIC_IID_ACCESSOR(nsILineBreaker, NS_ILINEBREAKER_IID) |
| michael@0 | 51 | |
| michael@0 | 52 | static inline bool |
| michael@0 | 53 | NS_IsSpace(char16_t u) |
| michael@0 | 54 | { |
| michael@0 | 55 | return u == 0x0020 || // SPACE |
| michael@0 | 56 | u == 0x0009 || // CHARACTER TABULATION |
| michael@0 | 57 | u == 0x000D || // CARRIAGE RETURN |
| michael@0 | 58 | u == 0x1680 || // OGHAM SPACE MARK |
| michael@0 | 59 | (0x2000 <= u && u <= 0x2006) || // EN QUAD, EM QUAD, EN SPACE, |
| michael@0 | 60 | // EM SPACE, THREE-PER-EM SPACE, |
| michael@0 | 61 | // FOUR-PER-SPACE, SIX-PER-EM SPACE, |
| michael@0 | 62 | (0x2008 <= u && u <= 0x200B) || // PUNCTUATION SPACE, THIN SPACE, |
| michael@0 | 63 | // HAIR SPACE, ZERO WIDTH SPACE |
| michael@0 | 64 | u == 0x205F; // MEDIUM MATHEMATICAL SPACE |
| michael@0 | 65 | } |
| michael@0 | 66 | |
| michael@0 | 67 | static inline bool |
| michael@0 | 68 | NS_NeedsPlatformNativeHandling(char16_t aChar) |
| michael@0 | 69 | { |
| michael@0 | 70 | return (0x0e01 <= aChar && aChar <= 0x0fff) || // Thai, Lao, Tibetan |
| michael@0 | 71 | (0x1780 <= aChar && aChar <= 0x17ff); // Khmer |
| michael@0 | 72 | } |
| michael@0 | 73 | |
| michael@0 | 74 | #endif /* nsILineBreaker_h__ */ |
