// Copyright 2016 PDFium Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file.
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// Original code copyright 2014 Foxit Software Inc. http://www.foxitsoftware.com
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#include "xfa/fde/cfx_chariter.h"
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CFX_CharIter::CFX_CharIter(const CFX_WideString& wsText)
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: m_wsText(wsText), m_nIndex(0) {
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ASSERT(!wsText.IsEmpty());
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}
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CFX_CharIter::~CFX_CharIter() {}
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FX_BOOL CFX_CharIter::Next(FX_BOOL bPrev) {
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if (bPrev) {
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if (m_nIndex <= 0)
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return FALSE;
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m_nIndex--;
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} else {
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if (m_nIndex + 1 >= m_wsText.GetLength())
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return FALSE;
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m_nIndex++;
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}
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return TRUE;
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}
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FX_WCHAR CFX_CharIter::GetChar() {
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return m_wsText.GetAt(m_nIndex);
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}
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void CFX_CharIter::SetAt(int32_t nIndex) {
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if (nIndex < 0 || nIndex >= m_wsText.GetLength())
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return;
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m_nIndex = nIndex;
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}
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int32_t CFX_CharIter::GetAt() const {
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return m_nIndex;
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}
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FX_BOOL CFX_CharIter::IsEOF(FX_BOOL bTail) const {
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return bTail ? (m_nIndex + 1 == m_wsText.GetLength()) : (m_nIndex == 0);
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}
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IFX_CharIter* CFX_CharIter::Clone() {
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CFX_CharIter* pIter = new CFX_CharIter(m_wsText);
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pIter->m_nIndex = m_nIndex;
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return pIter;
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}
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