diff options
Diffstat (limited to 'core/src/fxcrt/fx_basic_array.cpp')
| -rw-r--r-- | core/src/fxcrt/fx_basic_array.cpp | 342 |
1 files changed, 0 insertions, 342 deletions
diff --git a/core/src/fxcrt/fx_basic_array.cpp b/core/src/fxcrt/fx_basic_array.cpp deleted file mode 100644 index 18e2bd26d2..0000000000 --- a/core/src/fxcrt/fx_basic_array.cpp +++ /dev/null @@ -1,342 +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 "core/include/fxcrt/fx_basic.h" -#include "third_party/base/numerics/safe_math.h" - -CFX_BasicArray::CFX_BasicArray(int unit_size) - : m_pData(NULL), m_nSize(0), m_nMaxSize(0) { - if (unit_size < 0 || unit_size > (1 << 28)) { - m_nUnitSize = 4; - } else { - m_nUnitSize = unit_size; - } -} -CFX_BasicArray::~CFX_BasicArray() { - FX_Free(m_pData); -} -FX_BOOL CFX_BasicArray::SetSize(int nNewSize) { - if (nNewSize <= 0) { - FX_Free(m_pData); - m_pData = NULL; - m_nSize = m_nMaxSize = 0; - return 0 == nNewSize; - } - - if (!m_pData) { - pdfium::base::CheckedNumeric<int> totalSize = nNewSize; - totalSize *= m_nUnitSize; - if (!totalSize.IsValid()) { - m_nSize = m_nMaxSize = 0; - return FALSE; - } - m_pData = FX_Alloc(uint8_t, totalSize.ValueOrDie()); - m_nSize = m_nMaxSize = nNewSize; - } else if (nNewSize <= m_nMaxSize) { - if (nNewSize > m_nSize) { - FXSYS_memset(m_pData + m_nSize * m_nUnitSize, 0, - (nNewSize - m_nSize) * m_nUnitSize); - } - m_nSize = nNewSize; - } else { - int nNewMax = nNewSize < m_nMaxSize ? m_nMaxSize : nNewSize; - pdfium::base::CheckedNumeric<int> totalSize = nNewMax; - totalSize *= m_nUnitSize; - if (!totalSize.IsValid() || nNewMax < m_nSize) { - return FALSE; - } - uint8_t* pNewData = FX_Realloc(uint8_t, m_pData, totalSize.ValueOrDie()); - if (!pNewData) { - return FALSE; - } - FXSYS_memset(pNewData + m_nSize * m_nUnitSize, 0, - (nNewMax - m_nSize) * m_nUnitSize); - m_pData = pNewData; - m_nSize = nNewSize; - m_nMaxSize = nNewMax; - } - return TRUE; -} -FX_BOOL CFX_BasicArray::Append(const CFX_BasicArray& src) { - int nOldSize = m_nSize; - pdfium::base::CheckedNumeric<int> newSize = m_nSize; - newSize += src.m_nSize; - if (m_nUnitSize != src.m_nUnitSize || !newSize.IsValid() || - !SetSize(newSize.ValueOrDie())) { - return FALSE; - } - - FXSYS_memcpy(m_pData + nOldSize * m_nUnitSize, src.m_pData, - src.m_nSize * m_nUnitSize); - return TRUE; -} -FX_BOOL CFX_BasicArray::Copy(const CFX_BasicArray& src) { - if (!SetSize(src.m_nSize)) { - return FALSE; - } - FXSYS_memcpy(m_pData, src.m_pData, src.m_nSize * m_nUnitSize); - return TRUE; -} -uint8_t* CFX_BasicArray::InsertSpaceAt(int nIndex, int nCount) { - if (nIndex < 0 || nCount <= 0) { - return NULL; - } - if (nIndex >= m_nSize) { - if (!SetSize(nIndex + nCount)) { - return NULL; - } - } else { - int nOldSize = m_nSize; - if (!SetSize(m_nSize + nCount)) { - return NULL; - } - FXSYS_memmove(m_pData + (nIndex + nCount) * m_nUnitSize, - m_pData + nIndex * m_nUnitSize, - (nOldSize - nIndex) * m_nUnitSize); - FXSYS_memset(m_pData + nIndex * m_nUnitSize, 0, nCount * m_nUnitSize); - } - return m_pData + nIndex * m_nUnitSize; -} -FX_BOOL CFX_BasicArray::RemoveAt(int nIndex, int nCount) { - if (nIndex < 0 || nCount <= 0 || m_nSize < nIndex + nCount) { - return FALSE; - } - int nMoveCount = m_nSize - (nIndex + nCount); - if (nMoveCount) { - FXSYS_memmove(m_pData + nIndex * m_nUnitSize, - m_pData + (nIndex + nCount) * m_nUnitSize, - nMoveCount * m_nUnitSize); - } - m_nSize -= nCount; - return TRUE; -} -FX_BOOL CFX_BasicArray::InsertAt(int nStartIndex, - const CFX_BasicArray* pNewArray) { - if (!pNewArray) { - return FALSE; - } - if (pNewArray->m_nSize == 0) { - return TRUE; - } - if (!InsertSpaceAt(nStartIndex, pNewArray->m_nSize)) { - return FALSE; - } - FXSYS_memcpy(m_pData + nStartIndex * m_nUnitSize, pNewArray->m_pData, - pNewArray->m_nSize * m_nUnitSize); - return TRUE; -} -const void* CFX_BasicArray::GetDataPtr(int index) const { - if (index < 0 || index >= m_nSize || !m_pData) { - return NULL; - } - return m_pData + index * m_nUnitSize; -} -#ifdef PDF_ENABLE_XFA -CFX_BaseSegmentedArray::CFX_BaseSegmentedArray(int unit_size, - int segment_units, - int index_size) - : m_UnitSize(unit_size), - m_SegmentSize(segment_units), - m_IndexSize(index_size), - m_IndexDepth(0), - m_DataSize(0), - m_pIndex(NULL) {} -void CFX_BaseSegmentedArray::SetUnitSize(int unit_size, - int segment_units, - int index_size) { - ASSERT(m_DataSize == 0); - m_UnitSize = unit_size; - m_SegmentSize = segment_units; - m_IndexSize = index_size; -} -CFX_BaseSegmentedArray::~CFX_BaseSegmentedArray() { - RemoveAll(); -} -static void _ClearIndex(int level, int size, void** pIndex) { - if (level == 0) { - FX_Free(pIndex); - return; - } - for (int i = 0; i < size; ++i) { - if (pIndex[i]) - _ClearIndex(level - 1, size, (void**)pIndex[i]); - } - FX_Free(pIndex); -} -void CFX_BaseSegmentedArray::RemoveAll() { - if (!m_pIndex) { - return; - } - _ClearIndex(m_IndexDepth, m_IndexSize, (void**)m_pIndex); - m_pIndex = NULL; - m_IndexDepth = 0; - m_DataSize = 0; -} -void* CFX_BaseSegmentedArray::Add() { - if (m_DataSize % m_SegmentSize) { - return GetAt(m_DataSize++); - } - void* pSegment = FX_Alloc2D(uint8_t, m_UnitSize, m_SegmentSize); - if (!m_pIndex) { - m_pIndex = pSegment; - m_DataSize++; - return pSegment; - } - if (m_IndexDepth == 0) { - void** pIndex = FX_Alloc(void*, m_IndexSize); - pIndex[0] = m_pIndex; - pIndex[1] = pSegment; - m_pIndex = pIndex; - m_DataSize++; - m_IndexDepth++; - return pSegment; - } - int seg_index = m_DataSize / m_SegmentSize; - if (seg_index % m_IndexSize) { - void** pIndex = GetIndex(seg_index); - pIndex[seg_index % m_IndexSize] = pSegment; - m_DataSize++; - return pSegment; - } - int tree_size = 1; - int i; - for (i = 0; i < m_IndexDepth; i++) { - tree_size *= m_IndexSize; - } - if (m_DataSize == tree_size * m_SegmentSize) { - void** pIndex = FX_Alloc(void*, m_IndexSize); - pIndex[0] = m_pIndex; - m_pIndex = pIndex; - m_IndexDepth++; - } else { - tree_size /= m_IndexSize; - } - void** pSpot = (void**)m_pIndex; - for (i = 1; i < m_IndexDepth; i++) { - if (!pSpot[seg_index / tree_size]) { - pSpot[seg_index / tree_size] = FX_Alloc(void*, m_IndexSize); - } - pSpot = (void**)pSpot[seg_index / tree_size]; - seg_index = seg_index % tree_size; - tree_size /= m_IndexSize; - } - if (i < m_IndexDepth) { - FX_Free(pSegment); - RemoveAll(); - return NULL; - } - pSpot[seg_index % m_IndexSize] = pSegment; - m_DataSize++; - return pSegment; -} -void** CFX_BaseSegmentedArray::GetIndex(int seg_index) const { - ASSERT(m_IndexDepth != 0); - if (m_IndexDepth == 1) { - return (void**)m_pIndex; - } - if (m_IndexDepth == 2) { - return (void**)((void**)m_pIndex)[seg_index / m_IndexSize]; - } - int tree_size = 1; - int i; - for (i = 1; i < m_IndexDepth; i++) { - tree_size *= m_IndexSize; - } - void** pSpot = (void**)m_pIndex; - for (i = 1; i < m_IndexDepth; i++) { - pSpot = (void**)pSpot[seg_index / tree_size]; - seg_index = seg_index % tree_size; - tree_size /= m_IndexSize; - } - return pSpot; -} -void* CFX_BaseSegmentedArray::IterateSegment(const uint8_t* pSegment, - int count, - FX_BOOL (*callback)(void* param, - void* pData), - void* param) const { - for (int i = 0; i < count; i++) { - if (!callback(param, (void*)(pSegment + i * m_UnitSize))) { - return (void*)(pSegment + i * m_UnitSize); - } - } - return NULL; -} -void* CFX_BaseSegmentedArray::IterateIndex(int level, - int& start, - void** pIndex, - FX_BOOL (*callback)(void* param, - void* pData), - void* param) const { - if (level == 0) { - int count = m_DataSize - start; - if (count > m_SegmentSize) { - count = m_SegmentSize; - } - start += count; - return IterateSegment((const uint8_t*)pIndex, count, callback, param); - } - for (int i = 0; i < m_IndexSize; i++) { - if (!pIndex[i]) { - continue; - } - void* p = - IterateIndex(level - 1, start, (void**)pIndex[i], callback, param); - if (p) { - return p; - } - } - return NULL; -} -void* CFX_BaseSegmentedArray::Iterate(FX_BOOL (*callback)(void* param, - void* pData), - void* param) const { - if (!m_pIndex) { - return NULL; - } - int start = 0; - return IterateIndex(m_IndexDepth, start, (void**)m_pIndex, callback, param); -} -void* CFX_BaseSegmentedArray::GetAt(int index) const { - if (index < 0 || index >= m_DataSize) { - return NULL; - } - if (m_IndexDepth == 0) { - return (uint8_t*)m_pIndex + m_UnitSize * index; - } - int seg_index = index / m_SegmentSize; - return (uint8_t*)GetIndex(seg_index)[seg_index % m_IndexSize] + - (index % m_SegmentSize) * m_UnitSize; -} -void CFX_BaseSegmentedArray::Delete(int index, int count) { - if (index < 0 || count < 1 || index + count > m_DataSize) { - return; - } - int i; - for (i = index; i < m_DataSize - count; i++) { - uint8_t* pSrc = (uint8_t*)GetAt(i + count); - uint8_t* pDest = (uint8_t*)GetAt(i); - for (int j = 0; j < m_UnitSize; j++) { - pDest[j] = pSrc[j]; - } - } - int new_segs = (m_DataSize - count + m_SegmentSize - 1) / m_SegmentSize; - int old_segs = (m_DataSize + m_SegmentSize - 1) / m_SegmentSize; - if (new_segs < old_segs) { - if (m_IndexDepth) { - for (i = new_segs; i < old_segs; i++) { - void** pIndex = GetIndex(i); - FX_Free(pIndex[i % m_IndexSize]); - pIndex[i % m_IndexSize] = NULL; - } - } else { - FX_Free(m_pIndex); - m_pIndex = NULL; - } - } - m_DataSize -= count; -} -#endif // PDF_ENABLE_XFA |