summaryrefslogtreecommitdiff
path: root/xfa/fde/cfde_txtedtbuf.cpp
diff options
context:
space:
mode:
Diffstat (limited to 'xfa/fde/cfde_txtedtbuf.cpp')
-rw-r--r--xfa/fde/cfde_txtedtbuf.cpp316
1 files changed, 0 insertions, 316 deletions
diff --git a/xfa/fde/cfde_txtedtbuf.cpp b/xfa/fde/cfde_txtedtbuf.cpp
deleted file mode 100644
index caa223c697..0000000000
--- a/xfa/fde/cfde_txtedtbuf.cpp
+++ /dev/null
@@ -1,316 +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/fde/cfde_txtedtbuf.h"
-
-#include <algorithm>
-#include <utility>
-
-#include "third_party/base/ptr_util.h"
-#include "third_party/base/stl_util.h"
-
-namespace {
-
-const int32_t kDefaultChunkSize = 1024;
-
-} // namespace
-
-CFDE_TxtEdtBuf::CFDE_TxtEdtBuf() : m_chunkSize(kDefaultChunkSize), m_nTotal(0) {
- m_chunks.push_back(pdfium::MakeUnique<ChunkHeader>(m_chunkSize));
-}
-
-CFDE_TxtEdtBuf::~CFDE_TxtEdtBuf() {}
-
-void CFDE_TxtEdtBuf::SetText(const CFX_WideString& wsText) {
- ASSERT(!wsText.IsEmpty());
-
- Clear();
-
- int32_t nTextLength = wsText.GetLength();
- int32_t nNeedCount = ((nTextLength - 1) / m_chunkSize + 1) -
- pdfium::CollectionSize<int32_t>(m_chunks);
- for (int32_t i = 0; i < nNeedCount; ++i)
- m_chunks.push_back(pdfium::MakeUnique<ChunkHeader>(m_chunkSize));
-
- const wchar_t* lpSrcBuf = wsText.c_str();
- int32_t nLeave = nTextLength;
- int32_t nCopyedLength = m_chunkSize;
- for (size_t i = 0; i < m_chunks.size() && nLeave > 0; ++i) {
- if (nLeave < nCopyedLength)
- nCopyedLength = nLeave;
-
- ChunkHeader* chunk = m_chunks[i].get();
- memcpy(chunk->wChars.data(), lpSrcBuf, nCopyedLength * sizeof(wchar_t));
- nLeave -= nCopyedLength;
- lpSrcBuf += nCopyedLength;
- chunk->nUsed = nCopyedLength;
- }
- m_nTotal = nTextLength;
-}
-
-wchar_t CFDE_TxtEdtBuf::GetCharByIndex(int32_t nIndex) const {
- ASSERT(nIndex >= 0 && nIndex < GetTextLength());
-
- ChunkHeader* pChunkHeader = nullptr;
- int32_t nTotal = 0;
- for (const auto& chunk : m_chunks) {
- pChunkHeader = chunk.get();
- nTotal += pChunkHeader->nUsed;
- if (nTotal > nIndex)
- break;
- }
- ASSERT(pChunkHeader);
-
- return pChunkHeader->wChars[pChunkHeader->nUsed - (nTotal - nIndex)];
-}
-
-CFX_WideString CFDE_TxtEdtBuf::GetRange(int32_t nBegin, int32_t nLength) const {
- if (nLength == 0 || GetTextLength() == 0)
- return CFX_WideString();
-
- ASSERT(nBegin >= 0 && nLength > 0 && nBegin < GetTextLength() &&
- nBegin + nLength <= GetTextLength());
-
- int32_t chunkIndex = 0;
- int32_t charIndex = 0;
- std::tie(chunkIndex, charIndex) = Index2CP(nBegin);
-
- int32_t nLeave = nLength;
- CFX_WideString wsText;
-
- int32_t nCopyLength = m_chunks[chunkIndex]->nUsed - charIndex;
- wchar_t* lpSrcBuf = m_chunks[chunkIndex]->wChars.data() + charIndex;
- while (nLeave > 0) {
- if (nLeave <= nCopyLength)
- nCopyLength = nLeave;
-
- wsText += CFX_WideStringC(lpSrcBuf, nCopyLength);
-
- ++chunkIndex;
- if (chunkIndex >= pdfium::CollectionSize<int32_t>(m_chunks))
- break;
-
- lpSrcBuf = m_chunks[chunkIndex]->wChars.data();
- nLeave -= nCopyLength;
- nCopyLength = m_chunks[chunkIndex]->nUsed;
- }
- return wsText;
-}
-
-void CFDE_TxtEdtBuf::Insert(int32_t nPos, const CFX_WideString& wsText) {
- ASSERT(nPos >= 0 && nPos <= m_nTotal);
-
- int32_t nLength = wsText.GetLength();
- ASSERT(nLength > 0);
-
- int32_t chunkIndex = 0;
- int32_t charIndex = 0;
- std::tie(chunkIndex, charIndex) = Index2CP(nPos);
-
- if (charIndex != 0) {
- auto newChunk = pdfium::MakeUnique<ChunkHeader>(m_chunkSize);
-
- ChunkHeader* chunk = m_chunks[chunkIndex].get();
- int32_t nCopy = chunk->nUsed - charIndex;
-
- memcpy(newChunk->wChars.data(), chunk->wChars.data() + charIndex,
- nCopy * sizeof(wchar_t));
- chunk->nUsed -= nCopy;
- ++chunkIndex;
-
- newChunk->nUsed = nCopy;
- m_chunks.insert(m_chunks.begin() + chunkIndex, std::move(newChunk));
- charIndex = 0;
- }
-
- const wchar_t* lpText = wsText.c_str();
- if (chunkIndex != 0) {
- ChunkHeader* chunk = m_chunks[chunkIndex - 1].get();
- if (chunk->nUsed != m_chunkSize) {
- chunkIndex--;
- int32_t nCopy = std::min(nLength, m_chunkSize - chunk->nUsed);
- memcpy(chunk->wChars.data() + chunk->nUsed, lpText,
- nCopy * sizeof(wchar_t));
- lpText += nCopy;
- nLength -= nCopy;
- chunk->nUsed += nCopy;
- ++chunkIndex;
- }
- }
-
- while (nLength > 0) {
- auto chunk = pdfium::MakeUnique<ChunkHeader>(m_chunkSize);
-
- int32_t nCopy = std::min(nLength, m_chunkSize);
- memcpy(chunk->wChars.data(), lpText, nCopy * sizeof(wchar_t));
- lpText += nCopy;
- nLength -= nCopy;
- chunk->nUsed = nCopy;
- m_chunks.insert(m_chunks.begin() + chunkIndex, std::move(chunk));
- ++chunkIndex;
- }
-
- m_nTotal += wsText.GetLength();
-}
-
-void CFDE_TxtEdtBuf::Delete(int32_t nIndex, int32_t nLength) {
- ASSERT(nLength > 0 && nIndex >= 0 && nIndex + nLength <= m_nTotal);
-
- int32_t endChunkIndex = 0;
- int32_t endCharIndex = 0;
- std::tie(endChunkIndex, endCharIndex) = Index2CP(nIndex + nLength - 1);
- m_nTotal -= nLength;
-
- int32_t nFirstPart = endCharIndex + 1;
- int32_t nMovePart = m_chunks[endChunkIndex]->nUsed - nFirstPart;
- if (nMovePart != 0) {
- int32_t nDelete = std::min(nFirstPart, nLength);
- memmove(m_chunks[endChunkIndex]->wChars.data() + nFirstPart - nDelete,
- m_chunks[endChunkIndex]->wChars.data() + nFirstPart,
- nMovePart * sizeof(wchar_t));
- m_chunks[endChunkIndex]->nUsed -= nDelete;
- nLength -= nDelete;
- --endChunkIndex;
- }
-
- while (nLength > 0) {
- int32_t nDeleted = std::min(m_chunks[endChunkIndex]->nUsed, nLength);
- m_chunks[endChunkIndex]->nUsed -= nDeleted;
- if (m_chunks[endChunkIndex]->nUsed == 0)
- m_chunks.erase(m_chunks.begin() + endChunkIndex);
-
- nLength -= nDeleted;
- --endChunkIndex;
- }
-}
-
-void CFDE_TxtEdtBuf::Clear() {
- for (auto& chunk : m_chunks)
- chunk->nUsed = 0;
- m_nTotal = 0;
-}
-
-void CFDE_TxtEdtBuf::SetChunkSizeForTesting(size_t size) {
- ASSERT(size > 0);
-
- m_chunkSize = size;
- m_chunks.clear();
- m_chunks.push_back(pdfium::MakeUnique<ChunkHeader>(m_chunkSize));
-}
-
-std::pair<int32_t, int32_t> CFDE_TxtEdtBuf::Index2CP(int32_t nIndex) const {
- ASSERT(nIndex <= GetTextLength());
-
- if (nIndex == m_nTotal)
- return {m_chunks.size() - 1, m_chunks.back()->nUsed};
-
- int32_t chunkIndex = 0;
- int32_t nTotal = 0;
- for (auto& chunk : m_chunks) {
- nTotal += chunk->nUsed;
- if (nTotal > nIndex)
- break;
-
- ++chunkIndex;
- }
-
- return {chunkIndex, m_chunks[chunkIndex]->nUsed - (nTotal - nIndex)};
-}
-
-CFDE_TxtEdtBuf::ChunkHeader::ChunkHeader(int32_t chunkSize) : nUsed(0) {
- wChars.resize(chunkSize);
-}
-
-CFDE_TxtEdtBuf::ChunkHeader::~ChunkHeader() {}
-
-CFDE_TxtEdtBuf::Iterator::Iterator(CFDE_TxtEdtBuf* pBuf, wchar_t wcAlias)
- : m_pBuf(pBuf),
- m_nCurChunk(0),
- m_nCurIndex(0),
- m_nIndex(0),
- m_Alias(wcAlias) {
- ASSERT(m_pBuf);
-}
-
-CFDE_TxtEdtBuf::Iterator::~Iterator() {}
-
-bool CFDE_TxtEdtBuf::Iterator::Next(bool bPrev) {
- if (bPrev) {
- if (m_nIndex == 0)
- return false;
-
- ASSERT(m_nCurChunk < pdfium::CollectionSize<int32_t>(m_pBuf->m_chunks));
-
- if (m_nCurIndex > 0) {
- --m_nCurIndex;
- } else {
- while (m_nCurChunk > 0) {
- --m_nCurChunk;
- ChunkHeader* chunk = m_pBuf->m_chunks[m_nCurChunk].get();
- if (chunk->nUsed > 0) {
- m_nCurIndex = chunk->nUsed - 1;
- break;
- }
- }
- }
- ASSERT(m_nCurChunk >= 0);
-
- --m_nIndex;
- return true;
- }
-
- if (m_nIndex >= (m_pBuf->m_nTotal - 1))
- return false;
-
- ASSERT(m_nCurChunk < pdfium::CollectionSize<int32_t>(m_pBuf->m_chunks));
-
- if (m_pBuf->m_chunks[m_nCurChunk]->nUsed != (m_nCurIndex + 1)) {
- ++m_nCurIndex;
- } else {
- while (m_nCurChunk <
- pdfium::CollectionSize<int32_t>(m_pBuf->m_chunks) - 1) {
- ++m_nCurChunk;
- if (m_pBuf->m_chunks[m_nCurChunk]->nUsed > 0) {
- m_nCurIndex = 0;
- break;
- }
- }
- }
- ++m_nIndex;
- return true;
-}
-
-void CFDE_TxtEdtBuf::Iterator::SetAt(int32_t nIndex) {
- ASSERT(nIndex >= 0 && nIndex < m_pBuf->m_nTotal);
-
- std::tie(m_nCurChunk, m_nCurIndex) = m_pBuf->Index2CP(nIndex);
- m_nIndex = nIndex;
-}
-
-int32_t CFDE_TxtEdtBuf::Iterator::GetAt() const {
- return m_nIndex;
-}
-
-wchar_t CFDE_TxtEdtBuf::Iterator::GetChar() const {
- ASSERT(m_nIndex >= 0 && m_nIndex < m_pBuf->m_nTotal);
-
- if (m_Alias != 0 && m_nIndex != (m_pBuf->m_nTotal - 1))
- return m_Alias;
- return m_pBuf->m_chunks[m_nCurChunk]->wChars[m_nCurIndex];
-}
-
-bool CFDE_TxtEdtBuf::Iterator::IsEOF(bool bTail) const {
- return bTail ? m_nIndex == (m_pBuf->GetTextLength() - 2) : m_nIndex == 0;
-}
-
-std::unique_ptr<IFX_CharIter> CFDE_TxtEdtBuf::Iterator::Clone() const {
- auto pIter = pdfium::MakeUnique<CFDE_TxtEdtBuf::Iterator>(m_pBuf, 0);
- pIter->m_nCurChunk = m_nCurChunk;
- pIter->m_nCurIndex = m_nCurIndex;
- pIter->m_nIndex = m_nIndex;
- pIter->m_Alias = m_Alias;
- return pIter;
-}
generated by cgit v1.2.3 (git 2.25.1) at 2024-06-07 19:57:45 +0000