tenfourfox/intl/lwbrk/nsCarbonBreaker.cpp
Cameron Kaiser c9b2922b70 hello FPR
2017-04-19 00:56:45 -07:00

87 lines
2.7 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/. */
#if(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);
}
#else
// 10.4 compatible version (CFStringTokenizer only exists in 10.5), backing
// out bug 923967. This uses the older Unicode Utilities version.
#include "nsComplexBreaker.h"
#include <Carbon/Carbon.h>
void
NS_GetComplexLineBreaks(const char16_t* aText, uint32_t aLength,
uint8_t* aBreakBefore)
{
NS_ASSERTION(aText, "aText shouldn't be null");
TextBreakLocatorRef breakLocator;
memset(aBreakBefore, false, aLength * sizeof(uint8_t));
OSStatus status = UCCreateTextBreakLocator(NULL, 0, kUCTextBreakLineMask,
&breakLocator);
if (status != noErr)
return;
for (UniCharArrayOffset position = 0; position < aLength;) {
UniCharArrayOffset offset;
status = UCFindTextBreak(breakLocator,
kUCTextBreakLineMask,
position == 0 ? kUCTextBreakLeadingEdgeMask :
(kUCTextBreakLeadingEdgeMask |
kUCTextBreakIterateMask),
aText,
aLength,
position,
&offset);
if (status != noErr || offset >= aLength)
break;
aBreakBefore[offset] = true;
position = offset;
}
UCDisposeTextBreakLocator(&breakLocator);
}
#endif