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