michael@0: /* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
michael@0: /* This Source Code Form is subject to the terms of the Mozilla Public
michael@0:  * License, v. 2.0. If a copy of the MPL was not distributed with this
michael@0:  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
michael@0: 
michael@0: #include "nsComplexBreaker.h"
michael@0: 
michael@0: #include <windows.h>
michael@0: 
michael@0: #include <usp10.h>
michael@0: 
michael@0: #include "nsUTF8Utils.h"
michael@0: #include "nsString.h"
michael@0: #include "nsTArray.h"
michael@0: 
michael@0: void
michael@0: NS_GetComplexLineBreaks(const char16_t* aText, uint32_t aLength,
michael@0:                         uint8_t* aBreakBefore)
michael@0: {
michael@0:   NS_ASSERTION(aText, "aText shouldn't be null"); 
michael@0: 
michael@0:   int outItems = 0;
michael@0:   HRESULT result;
michael@0:   nsAutoTArray<SCRIPT_ITEM, 64> items;
michael@0:   char16ptr_t text = aText;
michael@0: 
michael@0:   memset(aBreakBefore, false, aLength);
michael@0: 
michael@0:   if (!items.AppendElements(64))
michael@0:     return;
michael@0: 
michael@0:   do {
michael@0:     result = ScriptItemize(text, aLength, items.Length(), nullptr, nullptr,
michael@0:                            items.Elements(), &outItems);
michael@0: 
michael@0:     if (result == E_OUTOFMEMORY) {
michael@0:       if (!items.AppendElements(items.Length()))
michael@0:         return;
michael@0:     }
michael@0:   } while (result == E_OUTOFMEMORY);
michael@0: 
michael@0:   for (int iItem = 0; iItem < outItems; ++iItem)  {
michael@0:     uint32_t endOffset = (iItem + 1 == outItems ? aLength : items[iItem + 1].iCharPos);
michael@0:     uint32_t startOffset = items[iItem].iCharPos;
michael@0:     nsAutoTArray<SCRIPT_LOGATTR, 64> sla;
michael@0:     
michael@0:     if (!sla.AppendElements(endOffset - startOffset))
michael@0:       return;
michael@0: 
michael@0:     if (ScriptBreak(text + startOffset, endOffset - startOffset,
michael@0:                     &items[iItem].a,  sla.Elements()) < 0) 
michael@0:       return;
michael@0: 
michael@0:     for (uint32_t j=0; j+startOffset < endOffset; ++j) {
michael@0:        aBreakBefore[j+startOffset] = sla[j].fSoftBreak;
michael@0:     }
michael@0:   }
michael@0: }