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1 /* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */ |
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2 /* This Source Code Form is subject to the terms of the Mozilla Public |
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3 * License, v. 2.0. If a copy of the MPL was not distributed with this |
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4 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */ |
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5 |
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6 #include <CoreFoundation/CoreFoundation.h> |
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7 #include <stdint.h> |
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8 #include "nsDebug.h" |
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9 #include "nscore.h" |
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10 |
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11 void |
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12 NS_GetComplexLineBreaks(const char16_t* aText, uint32_t aLength, |
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13 uint8_t* aBreakBefore) |
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14 { |
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15 NS_ASSERTION(aText, "aText shouldn't be null"); |
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16 |
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17 memset(aBreakBefore, 0, aLength * sizeof(uint8_t)); |
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18 |
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19 CFStringRef str = ::CFStringCreateWithCharactersNoCopy(kCFAllocatorDefault, reinterpret_cast<const UniChar*>(aText), aLength, kCFAllocatorNull); |
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20 if (!str) { |
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21 return; |
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22 } |
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23 |
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24 CFStringTokenizerRef st = ::CFStringTokenizerCreate(kCFAllocatorDefault, str, |
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25 ::CFRangeMake(0, aLength), |
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26 kCFStringTokenizerUnitLineBreak, |
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27 nullptr); |
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28 if (!st) { |
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29 ::CFRelease(str); |
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30 return; |
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31 } |
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32 |
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33 CFStringTokenizerTokenType tt = ::CFStringTokenizerAdvanceToNextToken(st); |
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34 while (tt != kCFStringTokenizerTokenNone) { |
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35 CFRange r = ::CFStringTokenizerGetCurrentTokenRange(st); |
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36 if (r.location != 0) { // Ignore leading edge |
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37 aBreakBefore[r.location] = true; |
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38 } |
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39 tt = CFStringTokenizerAdvanceToNextToken(st); |
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40 } |
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41 |
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42 ::CFRelease(st); |
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43 ::CFRelease(str); |
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44 } |