зеркало из https://github.com/mozilla/gecko-dev.git
44 строки
1.4 KiB
C++
44 строки
1.4 KiB
C++
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
|
|
/* This Source Code Form is subject to the terms of the Mozilla Public
|
|
* License, v. 2.0. If a copy of the MPL was not distributed with this
|
|
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
|
|
|
|
#include <CoreFoundation/CoreFoundation.h>
|
|
#include <stdint.h>
|
|
#include "nsDebug.h"
|
|
#include "nscore.h"
|
|
|
|
void NS_GetComplexLineBreaks(const char16_t* aText, uint32_t aLength,
|
|
uint8_t* aBreakBefore) {
|
|
NS_ASSERTION(aText, "aText shouldn't be null");
|
|
|
|
memset(aBreakBefore, 0, aLength * sizeof(uint8_t));
|
|
|
|
CFStringRef str = ::CFStringCreateWithCharactersNoCopy(
|
|
kCFAllocatorDefault, reinterpret_cast<const UniChar*>(aText), aLength,
|
|
kCFAllocatorNull);
|
|
if (!str) {
|
|
return;
|
|
}
|
|
|
|
CFStringTokenizerRef st = ::CFStringTokenizerCreate(
|
|
kCFAllocatorDefault, str, ::CFRangeMake(0, aLength),
|
|
kCFStringTokenizerUnitLineBreak, nullptr);
|
|
if (!st) {
|
|
::CFRelease(str);
|
|
return;
|
|
}
|
|
|
|
CFStringTokenizerTokenType tt = ::CFStringTokenizerAdvanceToNextToken(st);
|
|
while (tt != kCFStringTokenizerTokenNone) {
|
|
CFRange r = ::CFStringTokenizerGetCurrentTokenRange(st);
|
|
if (r.location != 0) { // Ignore leading edge
|
|
aBreakBefore[r.location] = true;
|
|
}
|
|
tt = CFStringTokenizerAdvanceToNextToken(st);
|
|
}
|
|
|
|
::CFRelease(st);
|
|
::CFRelease(str);
|
|
}
|