diff options
Diffstat (limited to 'xfa/fee/fde_txtedtbuf.cpp')
| -rw-r--r-- | xfa/fee/fde_txtedtbuf.cpp | 405 |
1 files changed, 0 insertions, 405 deletions
diff --git a/xfa/fee/fde_txtedtbuf.cpp b/xfa/fee/fde_txtedtbuf.cpp deleted file mode 100644 index def92012e0..0000000000 --- a/xfa/fee/fde_txtedtbuf.cpp +++ /dev/null @@ -1,405 +0,0 @@ -// Copyright 2014 PDFium Authors. All rights reserved. -// Use of this source code is governed by a BSD-style license that can be -// found in the LICENSE file. - -// Original code copyright 2014 Foxit Software Inc. http://www.foxitsoftware.com - -#include "xfa/fee/fde_txtedtbuf.h" - -#include <algorithm> - -#include "xfa/fee/ifde_txtedtengine.h" - -namespace { - -const int kDefaultChunkSize = 1024; - -} // namespace - -#define FDE_DEFCHUNKCOUNT 2 -#define FDE_TXTEDT_FORMATBLOCK_BGN 0xFFF9 -#define FDE_TXTEDT_FORMATBLOCK_END 0xFFFB -#define FDE_TXTEDT_ZEROWIDTHSPACE 0x200B - -CFDE_TxtEdtBufIter::CFDE_TxtEdtBufIter(CFDE_TxtEdtBuf* pBuf, FX_WCHAR wcAlias) - : m_pBuf(pBuf), - m_nCurChunk(0), - m_nCurIndex(0), - m_nIndex(0), - m_Alias(wcAlias) { - ASSERT(m_pBuf); -} - -CFDE_TxtEdtBufIter::~CFDE_TxtEdtBufIter() {} - -FX_BOOL CFDE_TxtEdtBufIter::Next(FX_BOOL bPrev) { - if (bPrev) { - if (m_nIndex == 0) { - return FALSE; - } - ASSERT(m_nCurChunk < m_pBuf->m_Chunks.GetSize()); - CFDE_TxtEdtBuf::FDE_CHUNKHEADER* lpChunk = nullptr; - if (m_nCurIndex > 0) { - m_nCurIndex--; - } else { - while (m_nCurChunk > 0) { - --m_nCurChunk; - lpChunk = m_pBuf->m_Chunks[m_nCurChunk]; - if (lpChunk->nUsed > 0) { - m_nCurIndex = lpChunk->nUsed - 1; - break; - } - } - } - ASSERT(m_nCurChunk >= 0); - m_nIndex--; - return TRUE; - } else { - if (m_nIndex >= (m_pBuf->m_nTotal - 1)) { - return FALSE; - } - ASSERT(m_nCurChunk < m_pBuf->m_Chunks.GetSize()); - CFDE_TxtEdtBuf::FDE_CHUNKHEADER* lpChunk = m_pBuf->m_Chunks[m_nCurChunk]; - if (lpChunk->nUsed != (m_nCurIndex + 1)) { - m_nCurIndex++; - } else { - int32_t nEnd = m_pBuf->m_Chunks.GetSize() - 1; - while (m_nCurChunk < nEnd) { - m_nCurChunk++; - CFDE_TxtEdtBuf::FDE_CHUNKHEADER* lpChunkTemp = - m_pBuf->m_Chunks[m_nCurChunk]; - if (lpChunkTemp->nUsed > 0) { - m_nCurIndex = 0; - break; - } - } - } - m_nIndex++; - return TRUE; - } -} -void CFDE_TxtEdtBufIter::SetAt(int32_t nIndex) { - ASSERT(nIndex >= 0 && nIndex < m_pBuf->m_nTotal); - CFDE_TxtEdtBuf::FDE_CHUNKPLACE cp; - m_pBuf->Index2CP(nIndex, cp); - m_nIndex = nIndex; - m_nCurChunk = cp.nChunkIndex; - m_nCurIndex = cp.nCharIndex; -} -int32_t CFDE_TxtEdtBufIter::GetAt() const { - return m_nIndex; -} -FX_WCHAR CFDE_TxtEdtBufIter::GetChar() { - ASSERT(m_nIndex >= 0 && m_nIndex < m_pBuf->m_nTotal); - if (m_Alias == 0 || m_nIndex == (m_pBuf->m_nTotal - 1)) { - return m_pBuf->m_Chunks[m_nCurChunk]->wChars[m_nCurIndex]; - } - return m_Alias; -} -FX_BOOL CFDE_TxtEdtBufIter::IsEOF(FX_BOOL bTail) const { - return bTail ? m_nIndex == (m_pBuf->GetTextLength() - 2) : m_nIndex == 0; -} -IFX_CharIter* CFDE_TxtEdtBufIter::Clone() { - CFDE_TxtEdtBufIter* pIter = new CFDE_TxtEdtBufIter(m_pBuf); - pIter->m_nCurChunk = m_nCurChunk; - pIter->m_nCurIndex = m_nCurIndex; - pIter->m_nIndex = m_nIndex; - pIter->m_Alias = m_Alias; - return pIter; -} - -CFDE_TxtEdtBuf::CFDE_TxtEdtBuf() - : m_nChunkSize(kDefaultChunkSize), - m_nTotal(0), - m_bChanged(FALSE), - m_pAllocator(NULL) { - ASSERT(m_nChunkSize); - ResetChunkBuffer(FDE_DEFCHUNKCOUNT, m_nChunkSize); -} -void CFDE_TxtEdtBuf::Release() { - delete this; -} -CFDE_TxtEdtBuf::~CFDE_TxtEdtBuf() { - Clear(TRUE); - delete m_pAllocator; - m_Chunks.RemoveAll(); -} -FX_BOOL CFDE_TxtEdtBuf::SetChunkSize(int32_t nChunkSize) { - ASSERT(nChunkSize); - ResetChunkBuffer(FDE_DEFCHUNKCOUNT, nChunkSize); - return TRUE; -} -int32_t CFDE_TxtEdtBuf::GetChunkSize() const { - return m_nChunkSize; -} -int32_t CFDE_TxtEdtBuf::GetTextLength() const { - return m_nTotal; -} -void CFDE_TxtEdtBuf::SetText(const CFX_WideString& wsText) { - ASSERT(!wsText.IsEmpty()); - Clear(FALSE); - int32_t nTextLength = wsText.GetLength(); - int32_t nNeedCount = - ((nTextLength - 1) / m_nChunkSize + 1) - m_Chunks.GetSize(); - int32_t i = 0; - for (i = 0; i < nNeedCount; i++) { - FDE_CHUNKHEADER* lpChunk = - static_cast<FDE_CHUNKHEADER*>(m_pAllocator->Alloc( - sizeof(FDE_CHUNKHEADER) + (m_nChunkSize - 1) * sizeof(FX_WCHAR))); - lpChunk->nUsed = 0; - m_Chunks.Add(lpChunk); - } - int32_t nTotalCount = m_Chunks.GetSize(); - const FX_WCHAR* lpSrcBuf = wsText.c_str(); - int32_t nLeave = nTextLength; - int32_t nCopyedLength = m_nChunkSize; - for (i = 0; i < nTotalCount && nLeave > 0; i++) { - if (nLeave < nCopyedLength) { - nCopyedLength = nLeave; - } - FDE_CHUNKHEADER* lpChunk = m_Chunks[i]; - FXSYS_memcpy(lpChunk->wChars, lpSrcBuf, nCopyedLength * sizeof(FX_WCHAR)); - nLeave -= nCopyedLength; - lpSrcBuf += nCopyedLength; - lpChunk->nUsed = nCopyedLength; - } - m_nTotal = nTextLength; - m_bChanged = TRUE; -} -void CFDE_TxtEdtBuf::GetText(CFX_WideString& wsText) const { - GetRange(wsText, 0, m_nTotal); -} -FX_WCHAR CFDE_TxtEdtBuf::GetCharByIndex(int32_t nIndex) const { - ASSERT(nIndex >= 0 && nIndex < GetTextLength()); - FDE_CHUNKHEADER* pChunkHeader = nullptr; - int32_t nTotal = 0; - int32_t nCount = m_Chunks.GetSize(); - int32_t i = 0; - for (i = 0; i < nCount; i++) { - pChunkHeader = m_Chunks[i]; - nTotal += pChunkHeader->nUsed; - if (nTotal > nIndex) { - break; - } - } - ASSERT(pChunkHeader); - return pChunkHeader->wChars[pChunkHeader->nUsed - (nTotal - nIndex)]; -} -void CFDE_TxtEdtBuf::GetRange(CFX_WideString& wsText, - int32_t nBegin, - int32_t nLength) const { - FDE_CHUNKPLACE cp; - Index2CP(nBegin, cp); - int32_t nLeave = nLength; - int32_t nCount = m_Chunks.GetSize(); - FX_WCHAR* lpDstBuf = wsText.GetBuffer(nLength); - int32_t nChunkIndex = cp.nChunkIndex; - FDE_CHUNKHEADER* lpChunkHeader = m_Chunks[nChunkIndex]; - int32_t nCopyLength = lpChunkHeader->nUsed - cp.nCharIndex; - FX_WCHAR* lpSrcBuf = lpChunkHeader->wChars + cp.nCharIndex; - while (nLeave > 0) { - if (nLeave <= nCopyLength) { - nCopyLength = nLeave; - } - FXSYS_memcpy(lpDstBuf, lpSrcBuf, nCopyLength * sizeof(FX_WCHAR)); - nChunkIndex++; - if (nChunkIndex >= nCount) { - break; - } - lpChunkHeader = m_Chunks[nChunkIndex]; - lpSrcBuf = lpChunkHeader->wChars; - nLeave -= nCopyLength; - lpDstBuf += nCopyLength; - nCopyLength = lpChunkHeader->nUsed; - } - wsText.ReleaseBuffer(); -} -void CFDE_TxtEdtBuf::Insert(int32_t nPos, - const FX_WCHAR* lpText, - int32_t nLength) { - ASSERT(nPos >= 0 && nPos <= m_nTotal); - FDE_CHUNKPLACE cp; - Index2CP(nPos, cp); - int32_t nLengthTemp = nLength; - if (cp.nCharIndex != 0) { - FDE_CHUNKHEADER* lpNewChunk = - static_cast<FDE_CHUNKHEADER*>(m_pAllocator->Alloc( - sizeof(FDE_CHUNKHEADER) + (m_nChunkSize - 1) * sizeof(FX_WCHAR))); - FDE_CHUNKHEADER* lpChunk = m_Chunks[cp.nChunkIndex]; - int32_t nCopy = lpChunk->nUsed - cp.nCharIndex; - FXSYS_memcpy(lpNewChunk->wChars, lpChunk->wChars + cp.nCharIndex, - nCopy * sizeof(FX_WCHAR)); - lpChunk->nUsed -= nCopy; - cp.nChunkIndex++; - m_Chunks.InsertAt(cp.nChunkIndex, lpNewChunk); - lpNewChunk->nUsed = nCopy; - cp.nCharIndex = 0; - } - if (cp.nChunkIndex != 0) { - FDE_CHUNKHEADER* lpChunk = m_Chunks[cp.nChunkIndex - 1]; - if (lpChunk->nUsed != m_nChunkSize) { - cp.nChunkIndex--; - int32_t nFree = m_nChunkSize - lpChunk->nUsed; - int32_t nCopy = std::min(nLengthTemp, nFree); - FXSYS_memcpy(lpChunk->wChars + lpChunk->nUsed, lpText, - nCopy * sizeof(FX_WCHAR)); - lpText += nCopy; - nLengthTemp -= nCopy; - lpChunk->nUsed += nCopy; - cp.nChunkIndex++; - } - } - while (nLengthTemp > 0) { - FDE_CHUNKHEADER* lpChunk = - static_cast<FDE_CHUNKHEADER*>(m_pAllocator->Alloc( - sizeof(FDE_CHUNKHEADER) + (m_nChunkSize - 1) * sizeof(FX_WCHAR))); - ASSERT(lpChunk); - int32_t nCopy = std::min(nLengthTemp, m_nChunkSize); - FXSYS_memcpy(lpChunk->wChars, lpText, nCopy * sizeof(FX_WCHAR)); - lpText += nCopy; - nLengthTemp -= nCopy; - lpChunk->nUsed = nCopy; - m_Chunks.InsertAt(cp.nChunkIndex, lpChunk); - cp.nChunkIndex++; - } - m_nTotal += nLength; - m_bChanged = TRUE; -} -void CFDE_TxtEdtBuf::Delete(int32_t nIndex, int32_t nLength) { - ASSERT(nLength > 0 && nIndex >= 0 && nIndex + nLength <= m_nTotal); - FDE_CHUNKPLACE cpEnd; - Index2CP(nIndex + nLength - 1, cpEnd); - m_nTotal -= nLength; - FDE_CHUNKHEADER* lpChunk = m_Chunks[cpEnd.nChunkIndex]; - int32_t nFirstPart = cpEnd.nCharIndex + 1; - int32_t nMovePart = lpChunk->nUsed - nFirstPart; - if (nMovePart != 0) { - int32_t nDelete = std::min(nFirstPart, nLength); - FXSYS_memmove(lpChunk->wChars + nFirstPart - nDelete, - lpChunk->wChars + nFirstPart, nMovePart * sizeof(FX_WCHAR)); - lpChunk->nUsed -= nDelete; - nLength -= nDelete; - cpEnd.nChunkIndex--; - } - while (nLength > 0) { - lpChunk = m_Chunks[cpEnd.nChunkIndex]; - int32_t nDeleted = std::min(lpChunk->nUsed, nLength); - lpChunk->nUsed -= nDeleted; - if (lpChunk->nUsed == 0) { - m_pAllocator->Free(lpChunk); - m_Chunks.RemoveAt(cpEnd.nChunkIndex); - lpChunk = NULL; - } - nLength -= nDeleted; - cpEnd.nChunkIndex--; - } - m_bChanged = TRUE; -} -void CFDE_TxtEdtBuf::Clear(FX_BOOL bRelease) { - int32_t i = 0; - int32_t nCount = m_Chunks.GetSize(); - if (bRelease) { - while (i < nCount) { - m_pAllocator->Free(m_Chunks[i++]); - } - m_Chunks.RemoveAll(); - } else { - while (i < nCount) { - m_Chunks[i++]->nUsed = 0; - } - } - m_nTotal = 0; - m_bChanged = TRUE; -} -FX_BOOL CFDE_TxtEdtBuf::Optimize(IFX_Pause* pPause) { - if (m_bChanged == FALSE) { - return TRUE; - } - if (m_nTotal == 0) { - return TRUE; - } - int32_t nCount = m_Chunks.GetSize(); - if (nCount == 0) { - return TRUE; - } - int32_t i = 0; - for (; i < nCount; i++) { - FDE_CHUNKHEADER* lpChunk = m_Chunks[i]; - if (lpChunk->nUsed == 0) { - m_pAllocator->Free(lpChunk); - m_Chunks.RemoveAt(i); - --i; - --nCount; - } - } - if (pPause && pPause->NeedToPauseNow()) - return FALSE; - - FDE_CHUNKHEADER* lpPreChunk = m_Chunks[0]; - FDE_CHUNKHEADER* lpCurChunk = nullptr; - for (i = 1; i < nCount; i++) { - lpCurChunk = m_Chunks[i]; - if (lpPreChunk->nUsed + lpCurChunk->nUsed <= m_nChunkSize) { - FXSYS_memcpy(lpPreChunk->wChars + lpPreChunk->nUsed, lpCurChunk->wChars, - lpCurChunk->nUsed * sizeof(FX_WCHAR)); - lpPreChunk->nUsed += lpCurChunk->nUsed; - m_pAllocator->Free(lpCurChunk); - m_Chunks.RemoveAt(i); - --i; - --nCount; - } else { - lpPreChunk = lpCurChunk; - } - if (pPause != NULL && pPause->NeedToPauseNow()) { - return FALSE; - } - } - m_bChanged = FALSE; - return TRUE; -} -void CFDE_TxtEdtBuf::ResetChunkBuffer(int32_t nDefChunkCount, - int32_t nChunkSize) { - ASSERT(nChunkSize); - ASSERT(nDefChunkCount); - delete m_pAllocator; - m_pAllocator = nullptr; - m_Chunks.RemoveAll(); - m_nChunkSize = nChunkSize; - int32_t nChunkLength = - sizeof(FDE_CHUNKHEADER) + (m_nChunkSize - 1) * sizeof(FX_WCHAR); - m_pAllocator = IFX_MemoryAllocator::Create(FX_ALLOCTYPE_Fixed, nDefChunkCount, - nChunkLength); - FDE_CHUNKHEADER* lpChunkHeader = - static_cast<FDE_CHUNKHEADER*>(m_pAllocator->Alloc(nChunkLength)); - ASSERT(lpChunkHeader); - lpChunkHeader->nUsed = 0; - m_Chunks.Add(lpChunkHeader); - m_nTotal = 0; -} -int32_t CFDE_TxtEdtBuf::CP2Index(const FDE_CHUNKPLACE& cp) const { - int32_t nTotal = cp.nCharIndex; - int32_t i = 0; - for (i = 0; i < cp.nChunkIndex; i++) { - nTotal += m_Chunks[i]->nUsed; - } - return nTotal; -} -void CFDE_TxtEdtBuf::Index2CP(int32_t nIndex, FDE_CHUNKPLACE& cp) const { - ASSERT(nIndex <= GetTextLength()); - if (nIndex == m_nTotal) { - cp.nChunkIndex = m_Chunks.GetSize() - 1; - cp.nCharIndex = m_Chunks[cp.nChunkIndex]->nUsed; - return; - } - int32_t i = 0; - int32_t nTotal = 0; - int32_t nCount = m_Chunks.GetSize(); - for (; i < nCount; i++) { - nTotal += m_Chunks[i]->nUsed; - if (nTotal > nIndex) { - break; - } - } - cp.nChunkIndex = i; - cp.nCharIndex = m_Chunks[i]->nUsed - (nTotal - nIndex); -} |