intl/lwbrk/src/nsCarbonBreaker.cpp

branch
TOR_BUG_3246
changeset 4
fc2d59ddac77
equal deleted inserted replaced
-1:000000000000 0:ef0b069ae13b
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
6 #include <CoreFoundation/CoreFoundation.h>
7 #include <stdint.h>
8 #include "nsDebug.h"
9 #include "nscore.h"
10
11 void
12 NS_GetComplexLineBreaks(const char16_t* aText, uint32_t aLength,
13 uint8_t* aBreakBefore)
14 {
15 NS_ASSERTION(aText, "aText shouldn't be null");
16
17 memset(aBreakBefore, 0, aLength * sizeof(uint8_t));
18
19 CFStringRef str = ::CFStringCreateWithCharactersNoCopy(kCFAllocatorDefault, reinterpret_cast<const UniChar*>(aText), aLength, kCFAllocatorNull);
20 if (!str) {
21 return;
22 }
23
24 CFStringTokenizerRef st = ::CFStringTokenizerCreate(kCFAllocatorDefault, str,
25 ::CFRangeMake(0, aLength),
26 kCFStringTokenizerUnitLineBreak,
27 nullptr);
28 if (!st) {
29 ::CFRelease(str);
30 return;
31 }
32
33 CFStringTokenizerTokenType tt = ::CFStringTokenizerAdvanceToNextToken(st);
34 while (tt != kCFStringTokenizerTokenNone) {
35 CFRange r = ::CFStringTokenizerGetCurrentTokenRange(st);
36 if (r.location != 0) { // Ignore leading edge
37 aBreakBefore[r.location] = true;
38 }
39 tt = CFStringTokenizerAdvanceToNextToken(st);
40 }
41
42 ::CFRelease(st);
43 ::CFRelease(str);
44 }

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