intl/lwbrk/src/nsCarbonBreaker.cpp

Wed, 31 Dec 2014 06:09:35 +0100

author
Michael Schloh von Bennewitz <michael@schloh.com>
date
Wed, 31 Dec 2014 06:09:35 +0100
changeset 0
6474c204b198
permissions
-rw-r--r--

Cloned upstream origin tor-browser at tor-browser-31.3.0esr-4.5-1-build1
revision ID fc1c9ff7c1b2defdbc039f12214767608f46423f for hacking purpose.

     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/. */
     6 #include <CoreFoundation/CoreFoundation.h>
     7 #include <stdint.h>
     8 #include "nsDebug.h"
     9 #include "nscore.h"
    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");
    17   memset(aBreakBefore, 0, aLength * sizeof(uint8_t));
    19   CFStringRef str = ::CFStringCreateWithCharactersNoCopy(kCFAllocatorDefault, reinterpret_cast<const UniChar*>(aText), aLength, kCFAllocatorNull);
    20   if (!str) {
    21     return;
    22   }
    24   CFStringTokenizerRef st = ::CFStringTokenizerCreate(kCFAllocatorDefault, str,
    25                                                       ::CFRangeMake(0, aLength),
    26                                                       kCFStringTokenizerUnitLineBreak,
    27                                                       nullptr);
    28   if (!st) {
    29     ::CFRelease(str);
    30     return;
    31   }
    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   }
    42   ::CFRelease(st);
    43   ::CFRelease(str);
    44 }

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