intl/lwbrk/public/nsILineBreaker.h@97036ab72558
intl/lwbrk/public/nsILineBreaker.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: 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__
8 #include "nsISupports.h"
10 #include "nscore.h"
12 #define NS_LINEBREAKER_NEED_MORE_TEXT -1
14 // {0x4b0b9e04-6ffb-4647-aa5f-2fa2ebd883e8}
15 #define NS_ILINEBREAKER_IID \
16 {0x4b0b9e04, 0x6ffb, 0x4647, \
17 {0xaa, 0x5f, 0x2f, 0xa2, 0xeb, 0xd8, 0x83, 0xe8}}
19 class nsILineBreaker : public nsISupports
20 {
21 public:
22 NS_DECLARE_STATIC_IID_ACCESSOR(NS_ILINEBREAKER_IID)
24 enum {
25 kWordBreak_Normal = 0, // default
26 kWordBreak_BreakAll = 1, // break all
27 kWordBreak_KeepAll = 2 // always keep
28 };
30 virtual int32_t Next( const char16_t* aText, uint32_t aLen,
31 uint32_t aPos) = 0;
33 virtual int32_t Prev( const char16_t* aText, uint32_t aLen,
34 uint32_t aPos) = 0;
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 };
50 NS_DEFINE_STATIC_IID_ACCESSOR(nsILineBreaker, NS_ILINEBREAKER_IID)
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 }
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 }
74 #endif /* nsILineBreaker_h__ */
