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authorthestig <thestig@chromium.org>2016-05-19 14:36:00 -0700
committerCommit bot <commit-bot@chromium.org>2016-05-19 14:36:00 -0700
commit80f25a5a8135933a405349ffc798d13273b3d690 (patch)
treedb15a1e0c751f6fc0a648a991d744bc14e7bfadd /core/fpdfapi/fpdf_page
parentc7600f99490f83e544e37feb77d3b9e8428b0f68 (diff)
downloadpdfium-80f25a5a8135933a405349ffc798d13273b3d690.tar.xz
Fix leak in CPDF_StreamContentParser::AddTextObject().
... by using STL containers in more places. Remove dead / duplicate code as well. BUG=603904 Review-Url: https://codereview.chromium.org/1998583002
Diffstat (limited to 'core/fpdfapi/fpdf_page')
-rw-r--r--core/fpdfapi/fpdf_page/cpdf_clippath.cpp104
-rw-r--r--core/fpdfapi/fpdf_page/cpdf_clippathdata.cpp67
-rw-r--r--core/fpdfapi/fpdf_page/cpdf_clippathdata.h14
-rw-r--r--core/fpdfapi/fpdf_page/fpdf_page_parser.cpp25
-rw-r--r--core/fpdfapi/fpdf_page/include/cpdf_clippath.h17
-rw-r--r--core/fpdfapi/fpdf_page/pageint.h4
6 files changed, 75 insertions, 156 deletions
diff --git a/core/fpdfapi/fpdf_page/cpdf_clippath.cpp b/core/fpdfapi/fpdf_page/cpdf_clippath.cpp
index 3a3300ae2f..ea854d1b29 100644
--- a/core/fpdfapi/fpdf_page/cpdf_clippath.cpp
+++ b/core/fpdfapi/fpdf_page/cpdf_clippath.cpp
@@ -6,10 +6,33 @@
#include "core/fpdfapi/fpdf_page/include/cpdf_clippath.h"
+#include <utility>
+
#include "core/fpdfapi/fpdf_page/include/cpdf_textobject.h"
+#include "third_party/base/stl_util.h"
#define FPDF_CLIPPATH_MAX_TEXTS 1024
+uint32_t CPDF_ClipPath::GetPathCount() const {
+ return pdfium::CollectionSize<uint32_t>(m_pObject->m_PathAndTypeList);
+}
+
+CPDF_Path CPDF_ClipPath::GetPath(size_t i) const {
+ return m_pObject->m_PathAndTypeList[i].first;
+}
+
+uint8_t CPDF_ClipPath::GetClipType(size_t i) const {
+ return m_pObject->m_PathAndTypeList[i].second;
+}
+
+uint32_t CPDF_ClipPath::GetTextCount() const {
+ return pdfium::CollectionSize<uint32_t>(m_pObject->m_TextList);
+}
+
+CPDF_TextObject* CPDF_ClipPath::GetText(size_t i) const {
+ return m_pObject->m_TextList[i].get();
+}
+
CFX_FloatRect CPDF_ClipPath::GetClipBox() const {
CFX_FloatRect rect;
FX_BOOL bStarted = FALSE;
@@ -49,83 +72,38 @@ CFX_FloatRect CPDF_ClipPath::GetClipBox() const {
return rect;
}
-void CPDF_ClipPath::AppendPath(CPDF_Path path, int type, FX_BOOL bAutoMerge) {
+void CPDF_ClipPath::AppendPath(CPDF_Path path, uint8_t type, bool bAutoMerge) {
CPDF_ClipPathData* pData = GetModify();
- if (pData->m_PathCount && bAutoMerge) {
- CPDF_Path old_path = pData->m_pPathList[pData->m_PathCount - 1];
+ if (!pData->m_PathAndTypeList.empty() && bAutoMerge) {
+ const CPDF_Path& old_path = pData->m_PathAndTypeList.back().first;
if (old_path.IsRect()) {
CFX_FloatRect old_rect(old_path.GetPointX(0), old_path.GetPointY(0),
old_path.GetPointX(2), old_path.GetPointY(2));
CFX_FloatRect new_rect = path.GetBoundingBox();
- if (old_rect.Contains(new_rect)) {
- pData->m_PathCount--;
- pData->m_pPathList[pData->m_PathCount].SetNull();
- }
+ if (old_rect.Contains(new_rect))
+ pData->m_PathAndTypeList.pop_back();
}
}
- if (pData->m_PathCount % 8 == 0) {
- CPDF_Path* pNewPath = new CPDF_Path[pData->m_PathCount + 8];
- for (int i = 0; i < pData->m_PathCount; i++) {
- pNewPath[i] = pData->m_pPathList[i];
- }
- delete[] pData->m_pPathList;
- uint8_t* pNewType = FX_Alloc(uint8_t, pData->m_PathCount + 8);
- FXSYS_memcpy(pNewType, pData->m_pTypeList, pData->m_PathCount);
- FX_Free(pData->m_pTypeList);
- pData->m_pPathList = pNewPath;
- pData->m_pTypeList = pNewType;
- }
- pData->m_pPathList[pData->m_PathCount] = path;
- pData->m_pTypeList[pData->m_PathCount] = (uint8_t)type;
- pData->m_PathCount++;
-}
-
-void CPDF_ClipPath::DeletePath(int index) {
- CPDF_ClipPathData* pData = GetModify();
- if (index >= pData->m_PathCount) {
- return;
- }
- pData->m_pPathList[index].SetNull();
- for (int i = index; i < pData->m_PathCount - 1; i++) {
- pData->m_pPathList[i] = pData->m_pPathList[i + 1];
- }
- pData->m_pPathList[pData->m_PathCount - 1].SetNull();
- FXSYS_memmove(pData->m_pTypeList + index, pData->m_pTypeList + index + 1,
- pData->m_PathCount - index - 1);
- pData->m_PathCount--;
+ pData->m_PathAndTypeList.push_back(std::make_pair(path, type));
}
-void CPDF_ClipPath::AppendTexts(CPDF_TextObject** pTexts, int count) {
+void CPDF_ClipPath::AppendTexts(
+ std::vector<std::unique_ptr<CPDF_TextObject>>* pTexts) {
CPDF_ClipPathData* pData = GetModify();
- if (pData->m_TextCount + count > FPDF_CLIPPATH_MAX_TEXTS) {
- for (int i = 0; i < count; i++) {
- delete pTexts[i];
- }
- return;
+ if (pData->m_TextList.size() + pTexts->size() <= FPDF_CLIPPATH_MAX_TEXTS) {
+ for (size_t i = 0; i < pTexts->size(); i++)
+ pData->m_TextList.push_back(std::move((*pTexts)[i]));
+ pData->m_TextList.push_back(std::unique_ptr<CPDF_TextObject>());
}
- CPDF_TextObject** pNewList =
- FX_Alloc(CPDF_TextObject*, pData->m_TextCount + count + 1);
- if (pData->m_pTextList) {
- FXSYS_memcpy(pNewList, pData->m_pTextList,
- pData->m_TextCount * sizeof(CPDF_TextObject*));
- FX_Free(pData->m_pTextList);
- }
- pData->m_pTextList = pNewList;
- for (int i = 0; i < count; i++) {
- pData->m_pTextList[pData->m_TextCount + i] = pTexts[i];
- }
- pData->m_pTextList[pData->m_TextCount + count] = NULL;
- pData->m_TextCount += count + 1;
+ pTexts->clear();
}
void CPDF_ClipPath::Transform(const CFX_Matrix& matrix) {
CPDF_ClipPathData* pData = GetModify();
- int i;
- for (i = 0; i < pData->m_PathCount; i++) {
- pData->m_pPathList[i].Transform(&matrix);
+ for (auto& obj : pData->m_PathAndTypeList)
+ obj.first.Transform(&matrix);
+ for (auto& text : pData->m_TextList) {
+ if (text)
+ text->Transform(matrix);
}
- for (i = 0; i < pData->m_TextCount; i++)
- if (pData->m_pTextList[i]) {
- pData->m_pTextList[i]->Transform(matrix);
- }
}
diff --git a/core/fpdfapi/fpdf_page/cpdf_clippathdata.cpp b/core/fpdfapi/fpdf_page/cpdf_clippathdata.cpp
index e6a5227269..9c84b4ae28 100644
--- a/core/fpdfapi/fpdf_page/cpdf_clippathdata.cpp
+++ b/core/fpdfapi/fpdf_page/cpdf_clippathdata.cpp
@@ -9,69 +9,16 @@
#include "core/fpdfapi/fpdf_page/include/cpdf_path.h"
#include "core/fpdfapi/fpdf_page/include/cpdf_textobject.h"
-CPDF_ClipPathData::CPDF_ClipPathData()
- : m_PathCount(0),
- m_pPathList(nullptr),
- m_pTypeList(nullptr),
- m_TextCount(0),
- m_pTextList(nullptr) {}
+CPDF_ClipPathData::CPDF_ClipPathData() {}
-CPDF_ClipPathData::~CPDF_ClipPathData() {
- delete[] m_pPathList;
- FX_Free(m_pTypeList);
-
- for (int i = m_TextCount - 1; i > -1; i--)
- delete m_pTextList[i];
- FX_Free(m_pTextList);
-}
+CPDF_ClipPathData::~CPDF_ClipPathData() {}
CPDF_ClipPathData::CPDF_ClipPathData(const CPDF_ClipPathData& src) {
- m_pPathList = nullptr;
- m_pPathList = nullptr;
- m_pTextList = nullptr;
-
- m_PathCount = src.m_PathCount;
- if (m_PathCount) {
- int alloc_size = m_PathCount;
- if (alloc_size % 8)
- alloc_size += 8 - (alloc_size % 8);
-
- m_pPathList = new CPDF_Path[alloc_size];
- for (int i = 0; i < m_PathCount; i++)
- m_pPathList[i] = src.m_pPathList[i];
-
- m_pTypeList = FX_Alloc(uint8_t, alloc_size);
- FXSYS_memcpy(m_pTypeList, src.m_pTypeList, m_PathCount);
- } else {
- m_pPathList = nullptr;
- m_pTypeList = nullptr;
- }
-
- m_TextCount = src.m_TextCount;
- if (m_TextCount) {
- m_pTextList = FX_Alloc(CPDF_TextObject*, m_TextCount);
- for (int i = 0; i < m_TextCount; i++) {
- if (src.m_pTextList[i])
- m_pTextList[i] = src.m_pTextList[i]->Clone();
- else
- m_pTextList[i] = nullptr;
- }
- } else {
- m_pTextList = nullptr;
- }
-}
-
-void CPDF_ClipPathData::SetCount(int path_count, int text_count) {
- ASSERT(m_TextCount == 0 && m_PathCount == 0);
- if (path_count) {
- m_PathCount = path_count;
- int alloc_size = (path_count + 7) / 8 * 8;
- m_pPathList = new CPDF_Path[alloc_size];
- m_pTypeList = FX_Alloc(uint8_t, alloc_size);
- }
+ m_PathAndTypeList = src.m_PathAndTypeList;
- if (text_count) {
- m_TextCount = text_count;
- m_pTextList = FX_Alloc(CPDF_TextObject*, text_count);
+ m_TextList.resize(src.m_TextList.size());
+ for (size_t i = 0; i < src.m_TextList.size(); ++i) {
+ if (src.m_TextList[i])
+ m_TextList[i].reset(src.m_TextList[i]->Clone());
}
}
diff --git a/core/fpdfapi/fpdf_page/cpdf_clippathdata.h b/core/fpdfapi/fpdf_page/cpdf_clippathdata.h
index 05a247f753..70e2b1b096 100644
--- a/core/fpdfapi/fpdf_page/cpdf_clippathdata.h
+++ b/core/fpdfapi/fpdf_page/cpdf_clippathdata.h
@@ -9,22 +9,22 @@
#include <stdint.h>
+#include <memory>
+#include <utility>
+#include <vector>
+
class CPDF_Path;
class CPDF_TextObject;
class CPDF_ClipPathData {
public:
+ using PathAndTypeData = std::pair<CPDF_Path, uint8_t>;
CPDF_ClipPathData();
CPDF_ClipPathData(const CPDF_ClipPathData&);
~CPDF_ClipPathData();
- void SetCount(int path_count, int text_count);
-
- int m_PathCount;
- CPDF_Path* m_pPathList;
- uint8_t* m_pTypeList;
- int m_TextCount;
- CPDF_TextObject** m_pTextList;
+ std::vector<PathAndTypeData> m_PathAndTypeList;
+ std::vector<std::unique_ptr<CPDF_TextObject>> m_TextList;
};
#endif // CORE_FPDFAPI_FPDF_PAGE_CPDF_CLIPPATHDATA_H_
diff --git a/core/fpdfapi/fpdf_page/fpdf_page_parser.cpp b/core/fpdfapi/fpdf_page/fpdf_page_parser.cpp
index 8c16d8c41f..0374915af4 100644
--- a/core/fpdfapi/fpdf_page/fpdf_page_parser.cpp
+++ b/core/fpdfapi/fpdf_page/fpdf_page_parser.cpp
@@ -813,18 +813,12 @@ void CPDF_StreamContentParser::Handle_EndMarkedContent() {
}
void CPDF_StreamContentParser::Handle_EndText() {
- int count = m_ClipTextList.GetSize();
- if (count == 0) {
+ if (m_ClipTextList.empty())
return;
- }
- if (m_pCurStates->m_TextState.GetObject()->m_TextMode < 4) {
- for (int i = 0; i < count; i++) {
- delete m_ClipTextList.GetAt(i);
- }
- } else {
- m_pCurStates->m_ClipPath.AppendTexts(m_ClipTextList.GetData(), count);
- }
- m_ClipTextList.RemoveAll();
+
+ if (m_pCurStates->m_TextState.GetObject()->m_TextMode >= 4)
+ m_pCurStates->m_ClipPath.AppendTexts(&m_ClipTextList);
+ m_ClipTextList.clear();
}
void CPDF_StreamContentParser::Handle_FillPath() {
@@ -1284,8 +1278,10 @@ void CPDF_StreamContentParser::AddTextObject(CFX_ByteString* pStrs,
m_pCurStates->m_TextHorzScale, m_Level);
m_pCurStates->m_TextX += x_advance;
m_pCurStates->m_TextY += y_advance;
- if (textmode > 3)
- m_ClipTextList.Add(pText->Clone());
+ if (textmode > 3) {
+ m_ClipTextList.push_back(
+ std::unique_ptr<CPDF_TextObject>(pText->Clone()));
+ }
m_pObjectHolder->GetPageObjectList()->push_back(std::move(pText));
}
if (pKerning && pKerning[nsegs - 1] != 0) {
@@ -1483,7 +1479,8 @@ void CPDF_StreamContentParser::AddPathPoint(FX_FLOAT x, FX_FLOAT y, int flag) {
}
void CPDF_StreamContentParser::AddPathObject(int FillType, FX_BOOL bStroke) {
- int PathPointCount = m_PathPointCount, PathClipType = m_PathClipType;
+ int PathPointCount = m_PathPointCount;
+ uint8_t PathClipType = m_PathClipType;
m_PathPointCount = 0;
m_PathClipType = 0;
if (PathPointCount <= 1) {
diff --git a/core/fpdfapi/fpdf_page/include/cpdf_clippath.h b/core/fpdfapi/fpdf_page/include/cpdf_clippath.h
index 6f239e661f..1daacf55d0 100644
--- a/core/fpdfapi/fpdf_page/include/cpdf_clippath.h
+++ b/core/fpdfapi/fpdf_page/include/cpdf_clippath.h
@@ -17,17 +17,14 @@ class CPDF_TextObject;
class CPDF_ClipPath : public CFX_CountRef<CPDF_ClipPathData> {
public:
- uint32_t GetPathCount() const { return m_pObject->m_PathCount; }
- CPDF_Path GetPath(int i) const { return m_pObject->m_pPathList[i]; }
- int GetClipType(int i) const { return m_pObject->m_pTypeList[i]; }
- uint32_t GetTextCount() const { return m_pObject->m_TextCount; }
- CPDF_TextObject* GetText(int i) const { return m_pObject->m_pTextList[i]; }
+ uint32_t GetPathCount() const;
+ CPDF_Path GetPath(size_t i) const;
+ uint8_t GetClipType(size_t i) const;
+ uint32_t GetTextCount() const;
+ CPDF_TextObject* GetText(size_t i) const;
CFX_FloatRect GetClipBox() const;
-
- void AppendPath(CPDF_Path path, int type, FX_BOOL bAutoMerge);
- void DeletePath(int layer_index);
-
- void AppendTexts(CPDF_TextObject** pTexts, int count);
+ void AppendPath(CPDF_Path path, uint8_t type, bool bAutoMerge);
+ void AppendTexts(std::vector<std::unique_ptr<CPDF_TextObject>>* pTexts);
void Transform(const CFX_Matrix& matrix);
};
diff --git a/core/fpdfapi/fpdf_page/pageint.h b/core/fpdfapi/fpdf_page/pageint.h
index 6534186dc8..d1364d0dd1 100644
--- a/core/fpdfapi/fpdf_page/pageint.h
+++ b/core/fpdfapi/fpdf_page/pageint.h
@@ -250,7 +250,7 @@ class CPDF_StreamContentParser {
CPDF_StreamParser* m_pSyntax;
std::unique_ptr<CPDF_AllStates> m_pCurStates;
CPDF_ContentMark m_CurContentMark;
- CFX_ArrayTemplate<CPDF_TextObject*> m_ClipTextList;
+ std::vector<std::unique_ptr<CPDF_TextObject>> m_ClipTextList;
CPDF_TextObject* m_pLastTextObject;
FX_FLOAT m_DefFontSize;
FX_PATHPOINT* m_pPathPoints;
@@ -260,7 +260,7 @@ class CPDF_StreamContentParser {
FX_FLOAT m_PathStartY;
FX_FLOAT m_PathCurrentX;
FX_FLOAT m_PathCurrentY;
- int m_PathClipType;
+ uint8_t m_PathClipType;
CFX_ByteString m_LastImageName;
CPDF_Image* m_pLastImage;
CFX_BinaryBuf m_LastImageDict;