1.1 --- /dev/null Thu Jan 01 00:00:00 1970 +0000
1.2 +++ b/intl/lwbrk/public/nsILineBreaker.h Wed Dec 31 06:09:35 2014 +0100
1.3 @@ -0,0 +1,74 @@
1.4 +/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
1.5 +/* This Source Code Form is subject to the terms of the Mozilla Public
1.6 + * License, v. 2.0. If a copy of the MPL was not distributed with this
1.7 + * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
1.8 +#ifndef nsILineBreaker_h__
1.9 +#define nsILineBreaker_h__
1.10 +
1.11 +#include "nsISupports.h"
1.12 +
1.13 +#include "nscore.h"
1.14 +
1.15 +#define NS_LINEBREAKER_NEED_MORE_TEXT -1
1.16 +
1.17 +// {0x4b0b9e04-6ffb-4647-aa5f-2fa2ebd883e8}
1.18 +#define NS_ILINEBREAKER_IID \
1.19 +{0x4b0b9e04, 0x6ffb, 0x4647, \
1.20 + {0xaa, 0x5f, 0x2f, 0xa2, 0xeb, 0xd8, 0x83, 0xe8}}
1.21 +
1.22 +class nsILineBreaker : public nsISupports
1.23 +{
1.24 +public:
1.25 + NS_DECLARE_STATIC_IID_ACCESSOR(NS_ILINEBREAKER_IID)
1.26 +
1.27 + enum {
1.28 + kWordBreak_Normal = 0, // default
1.29 + kWordBreak_BreakAll = 1, // break all
1.30 + kWordBreak_KeepAll = 2 // always keep
1.31 + };
1.32 +
1.33 + virtual int32_t Next( const char16_t* aText, uint32_t aLen,
1.34 + uint32_t aPos) = 0;
1.35 +
1.36 + virtual int32_t Prev( const char16_t* aText, uint32_t aLen,
1.37 + uint32_t aPos) = 0;
1.38 +
1.39 + // Call this on a word with whitespace at either end. We will apply JISx4051
1.40 + // rules to find breaks inside the word. aBreakBefore is set to the break-
1.41 + // before status of each character; aBreakBefore[0] will always be false
1.42 + // because we never return a break before the first character.
1.43 + // aLength is the length of the aText array and also the length of the aBreakBefore
1.44 + // output array.
1.45 + virtual void GetJISx4051Breaks(const char16_t* aText, uint32_t aLength,
1.46 + uint8_t aWordBreak,
1.47 + uint8_t* aBreakBefore) = 0;
1.48 + virtual void GetJISx4051Breaks(const uint8_t* aText, uint32_t aLength,
1.49 + uint8_t aWordBreak,
1.50 + uint8_t* aBreakBefore) = 0;
1.51 +};
1.52 +
1.53 +NS_DEFINE_STATIC_IID_ACCESSOR(nsILineBreaker, NS_ILINEBREAKER_IID)
1.54 +
1.55 +static inline bool
1.56 +NS_IsSpace(char16_t u)
1.57 +{
1.58 + return u == 0x0020 || // SPACE
1.59 + u == 0x0009 || // CHARACTER TABULATION
1.60 + u == 0x000D || // CARRIAGE RETURN
1.61 + u == 0x1680 || // OGHAM SPACE MARK
1.62 + (0x2000 <= u && u <= 0x2006) || // EN QUAD, EM QUAD, EN SPACE,
1.63 + // EM SPACE, THREE-PER-EM SPACE,
1.64 + // FOUR-PER-SPACE, SIX-PER-EM SPACE,
1.65 + (0x2008 <= u && u <= 0x200B) || // PUNCTUATION SPACE, THIN SPACE,
1.66 + // HAIR SPACE, ZERO WIDTH SPACE
1.67 + u == 0x205F; // MEDIUM MATHEMATICAL SPACE
1.68 +}
1.69 +
1.70 +static inline bool
1.71 +NS_NeedsPlatformNativeHandling(char16_t aChar)
1.72 +{
1.73 + return (0x0e01 <= aChar && aChar <= 0x0fff) || // Thai, Lao, Tibetan
1.74 + (0x1780 <= aChar && aChar <= 0x17ff); // Khmer
1.75 +}
1.76 +
1.77 +#endif /* nsILineBreaker_h__ */
