Move core/src/ up to core/.

This CL moves the core/src/ files up to core/ and fixes up the include guards,
includes and build files.

R=tsepez@chromium.org

Review URL: https://codereview.chromium.org/1800523005 .

1 files changed, 342 insertions, 0 deletions

diff --git a/core/fxcrt/fx_basic_array.cpp b/core/fxcrt/fx_basic_array.cpp
new file mode 100644
index 0000000000..18e2bd26d2
--- /dev/null
+++ b/core/fxcrt/fx_basic_array.cpp
@@ -0,0 +1,342 @@
+// 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