intl/lwbrk/src/nsCarbonBreaker.cpp
author Ehsan Akhgari <ehsan@mozilla.com>
Mon, 17 Oct 2011 10:59:28 -0400
changeset 79324 ec7577dec4fceef0ac2717416d9c48289402d935
parent 74581 4319081f6be52fcd00cece76a8cf0264b78bad3e
child 95919 f4157e8c410708d76703f19e4dfb61859bfe32d8
permissions -rw-r--r--
Bug 690892 - Replace PR_TRUE/PR_FALSE with true/false on mozilla-central; rs=dbaron Landing on a CLOSED TREE

/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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 * - Vee Satayamas <vsatayamas@gmail.com>
 * - Patipat Susumpow <kengggg@gmail.com>
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#include "nsComplexBreaker.h"
#include <Carbon/Carbon.h>

void
NS_GetComplexLineBreaks(const PRUnichar* aText, PRUint32 aLength,
                        PRUint8* aBreakBefore)
{
  NS_ASSERTION(aText, "aText shouldn't be null");
  TextBreakLocatorRef breakLocator;

  memset(aBreakBefore, false, aLength * sizeof(PRUint8));

  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)
      break;        
    aBreakBefore[offset] = true;
    position = offset;
  }
  UCDisposeTextBreakLocator(&breakLocator);
}