clang-format all pdfium code.

fpdfsdk/src/fpdf_transformpage.cpp

 // 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 "../../public/fpdf_transformpage.h"
 #include "../include/fsdk_define.h"
 
-DLLEXPORT void STDCALL FPDFPage_SetMediaBox(FPDF_PAGE page, float left, float bottom, float right, float top)
-{
-        if(!page)
-                return;
-
-        CPDF_Page* pPage = (CPDF_Page*)page;
-        CPDF_Dictionary* pPageDict = pPage->m_pFormDict;
-        CPDF_Array* pMediaBoxArray = new CPDF_Array;
-        pMediaBoxArray->Add(new CPDF_Number(left));
-        pMediaBoxArray->Add(new CPDF_Number(bottom));
-        pMediaBoxArray->Add(new CPDF_Number(FX_FLOAT(right)));
-        pMediaBoxArray->Add(new CPDF_Number(FX_FLOAT(top)));
-        pPageDict->SetAt("MediaBox", pMediaBoxArray);
-}
-
-
-DLLEXPORT void STDCALL FPDFPage_SetCropBox(FPDF_PAGE page, float left, float bottom, float right, float top)
-{
-        if(!page)
-                return;
-
-        CPDF_Page* pPage = (CPDF_Page*)page;
-        CPDF_Dictionary* pPageDict = pPage->m_pFormDict;
-        CPDF_Array* pCropBoxArray = new CPDF_Array;
-        pCropBoxArray->Add(new CPDF_Number(left));
-        pCropBoxArray->Add(new CPDF_Number(bottom));
-        pCropBoxArray->Add(new CPDF_Number(FX_FLOAT(right)));
-        pCropBoxArray->Add(new CPDF_Number(FX_FLOAT(top)));
-        pPageDict->SetAt("CropBox", pCropBoxArray);
-}
-
-
-DLLEXPORT FPDF_BOOL STDCALL FPDFPage_GetMediaBox(FPDF_PAGE page, float* left, float* bottom, float* right, float* top)
-{
-        if(!page)
-                return FALSE;
-        CPDF_Page* pPage = (CPDF_Page*)page;
-        CPDF_Dictionary* pPageDict = pPage->m_pFormDict;
-        CPDF_Array* pArray = pPageDict->GetArray("MediaBox");
-        if(pArray)
-        {
-                *left = pArray->GetFloat(0);
-                *bottom = pArray->GetFloat(1);
-                *right = pArray->GetFloat(2);
-                *top = pArray->GetFloat(3);
-                return TRUE;
-        }
-        return FALSE;
-}
-
-DLLEXPORT FPDF_BOOL STDCALL FPDFPage_GetCropBox(FPDF_PAGE page, float* left, float* bottom, float* right, float* top)
-{
-        if(!page)
-                return FALSE;
-        CPDF_Page* pPage = (CPDF_Page*)page;
-        CPDF_Dictionary* pPageDict = pPage->m_pFormDict;
-        CPDF_Array* pArray = pPageDict->GetArray("CropBox");
-        if(pArray)
-        {
-                *left = pArray->GetFloat(0);
-                *bottom = pArray->GetFloat(1);
-                *right = pArray->GetFloat(2);
-                *top = pArray->GetFloat(3);
-                return TRUE;
-        }
-        return FALSE;
-}
-
-DLLEXPORT FPDF_BOOL STDCALL FPDFPage_TransFormWithClip(FPDF_PAGE page, FS_MATRIX* matrix, FS_RECTF* clipRect)
-{
-        if(!page)
-                return FALSE;
-
-        CFX_ByteTextBuf textBuf;
-        textBuf<<"q ";
-        CFX_FloatRect rect(clipRect->left, clipRect->bottom, clipRect->right, clipRect->top);
-        rect.Normalize();
-        CFX_ByteString bsClipping;
-        bsClipping.Format("%f %f %f %f re W* n ", rect.left, rect.bottom, rect.Width(), rect.Height());
-        textBuf<<bsClipping;
-
-        CFX_ByteString bsMatix;
-        bsMatix.Format("%f %f %f %f %f %f cm ", matrix->a, matrix->b,matrix->c,matrix->d,matrix->e,matrix->f);
-        textBuf<<bsMatix;
-
-
-        CPDF_Page* pPage = (CPDF_Page*)page;
-        CPDF_Dictionary* pPageDic = pPage->m_pFormDict;
-        CPDF_Object* pContentObj = pPageDic ? pPageDic->GetElement("Contents") : NULL;
-        if(!pContentObj)
-                pContentObj = pPageDic ? pPageDic->GetArray("Contents") : NULL;
-        if(!pContentObj)
-                return FALSE;
-
-        CPDF_Dictionary* pDic = new CPDF_Dictionary;
-        CPDF_Stream* pStream = new CPDF_Stream(NULL,0, pDic);
-        pStream->SetData(textBuf.GetBuffer(), textBuf.GetSize(), FALSE, FALSE);
-        CPDF_Document* pDoc = pPage->m_pDocument;
-        if(!pDoc)
-                return FALSE;
-        pDoc->AddIndirectObject(pStream);
-
-        pDic = new CPDF_Dictionary;
-        CPDF_Stream* pEndStream = new CPDF_Stream(NULL,0, pDic);
-        pEndStream->SetData((const uint8_t*)" Q", 2, FALSE, FALSE);
-        pDoc->AddIndirectObject(pEndStream);
-
-        CPDF_Array* pContentArray = NULL;
-        if (pContentObj && pContentObj->GetType() == PDFOBJ_ARRAY)
-        {
-                pContentArray = (CPDF_Array*)pContentObj;
-                CPDF_Reference* pRef = new CPDF_Reference(pDoc, pStream->GetObjNum());
-                pContentArray->InsertAt(0, pRef);
-                pContentArray->AddReference(pDoc,pEndStream);
-
-        }
-        else if(pContentObj && pContentObj->GetType() == PDFOBJ_REFERENCE)
-        {
-                CPDF_Reference* pReference = (CPDF_Reference*)pContentObj;
-                CPDF_Object* pDirectObj = pReference->GetDirect();
-                if(pDirectObj != NULL)
-                {
-                        if(pDirectObj->GetType() == PDFOBJ_ARRAY)
-                        {
-                                pContentArray = (CPDF_Array*)pDirectObj;
-                                CPDF_Reference* pRef = new CPDF_Reference(pDoc, pStream->GetObjNum());
-                                pContentArray->InsertAt(0, pRef);
-                                pContentArray->AddReference(pDoc,pEndStream);
-                        }
-                        else if(pDirectObj->GetType() == PDFOBJ_STREAM)
-                        {
-                                pContentArray = new CPDF_Array();
-                                pContentArray->AddReference(pDoc,pStream->GetObjNum());
-                                pContentArray->AddReference(pDoc,pDirectObj->GetObjNum());
-                                pContentArray->AddReference(pDoc, pEndStream);
-                                pPageDic->SetAtReference("Contents", pDoc, pDoc->AddIndirectObject(pContentArray));
-                        }
-                }
-        }
-
-        //Need to transform the patterns as well.
-        CPDF_Dictionary* pRes = pPageDic->GetDict(FX_BSTRC("Resources"));
-        if(pRes)
-        {
-                CPDF_Dictionary* pPattenDict = pRes->GetDict(FX_BSTRC("Pattern"));
-                if(pPattenDict)
-                {
-                        FX_POSITION pos = pPattenDict->GetStartPos();
-                        while(pos)
-                        {
-                                CPDF_Dictionary* pDict = NULL;
-                                CFX_ByteString key;
-                                CPDF_Object* pObj = pPattenDict->GetNextElement(pos, key);
-                                if(pObj->GetType() == PDFOBJ_REFERENCE)
-                                        pObj = pObj->GetDirect();
-                                if(pObj->GetType() == PDFOBJ_DICTIONARY)
-                                {
-                                        pDict = (CPDF_Dictionary*)pObj;
-                                }
-                                else if(pObj->GetType() == PDFOBJ_STREAM)
-                                {
-                                        pDict = ((CPDF_Stream*)pObj)->GetDict();
-                                }
-                                else
-                                        continue;
-
-                                CFX_AffineMatrix m = pDict->GetMatrix(FX_BSTRC("Matrix"));
-                                CFX_AffineMatrix t = *(CFX_AffineMatrix*)matrix;
-                                m.Concat(t);
-                                pDict->SetAtMatrix(FX_BSTRC("Matrix"), m);
-                        }
-                }
-        }
-
-        return TRUE;
-}
-
-DLLEXPORT void STDCALL FPDFPageObj_TransformClipPath(FPDF_PAGEOBJECT page_object,double a, double b, double c, double d, double e, double f)
-{
-        CPDF_PageObject* pPageObj = (CPDF_PageObject*)page_object;
-        if(pPageObj == NULL)
-                return;
-        CFX_AffineMatrix matrix((FX_FLOAT)a,(FX_FLOAT)b,(FX_FLOAT)c,(FX_FLOAT)d,(FX_FLOAT)e,(FX_FLOAT)f);
-
-        //Special treatment to shading object, because the ClipPath for shading object is already transformed.
-        if(pPageObj->m_Type != PDFPAGE_SHADING)
-                pPageObj->TransformClipPath(matrix);
-        pPageObj->TransformGeneralState(matrix);
-}
-
-
-DLLEXPORT FPDF_CLIPPATH STDCALL FPDF_CreateClipPath(float left, float bottom, float right, float top)
-{
-        CPDF_ClipPath* pNewClipPath = new CPDF_ClipPath();
-        pNewClipPath->GetModify();
-        CPDF_Path Path;
-        Path.GetModify();
-        Path.AppendRect(left, bottom, right, top);
-        pNewClipPath->AppendPath(Path, FXFILL_ALTERNATE, FALSE);
-        return pNewClipPath;
-}
-
-DLLEXPORT void STDCALL FPDF_DestroyClipPath(FPDF_CLIPPATH clipPath)
-{
-    delete (CPDF_ClipPath*)clipPath;
-}
-
-void OutputPath(CFX_ByteTextBuf& buf, CPDF_Path path)
-{
-        const CFX_PathData* pPathData = path;
-        if (pPathData == NULL) return;
-
-        FX_PATHPOINT* pPoints = pPathData->GetPoints();
-
-        if (path.IsRect()) {
-                buf << (pPoints[0].m_PointX) << " " << (pPoints[0].m_PointY) << " "
-                        << (pPoints[2].m_PointX - pPoints[0].m_PointX) << " "
-                        << (pPoints[2].m_PointY - pPoints[0].m_PointY) << " re\n";
-                return;
-        }
-
-        CFX_ByteString temp;
-        for (int i = 0; i < pPathData->GetPointCount(); i ++) {
-                buf << (pPoints[i].m_PointX) << " " << (pPoints[i].m_PointY);
-                int point_type = pPoints[i].m_Flag & FXPT_TYPE;
-                if (point_type == FXPT_MOVETO)
-                        buf << " m\n";
-                else if (point_type == FXPT_BEZIERTO) {
-                        buf << " " << (pPoints[i+1].m_PointX) << " " << (pPoints[i+1].m_PointY) << " " <<
-                                (pPoints[i+2].m_PointX) << " " << (pPoints[i+2].m_PointY);
-                        if (pPoints[i+2].m_Flag & FXPT_CLOSEFIGURE)
-                                buf << " c h\n";
-                        else
-                                buf << " c\n";
-                        i += 2;
-                } else if (point_type == FXPT_LINETO) {
-                        if (pPoints[i].m_Flag & FXPT_CLOSEFIGURE)
-                                buf << " l h\n";
-                        else
-                                buf << " l\n";
-                }
-        }
-}
-
-DLLEXPORT void STDCALL FPDFPage_InsertClipPath(FPDF_PAGE page,FPDF_CLIPPATH clipPath)
-{
-        if(!page)
-                return;
-        CPDF_Page* pPage = (CPDF_Page*)page;
-        CPDF_Dictionary* pPageDic = pPage->m_pFormDict;
-        CPDF_Object* pContentObj = pPageDic ? pPageDic->GetElement("Contents") : NULL;
-        if(!pContentObj)
-                pContentObj = pPageDic ? pPageDic->GetArray("Contents") : NULL;
-        if(!pContentObj)
-                return;
-
-        CFX_ByteTextBuf strClip;
-        CPDF_ClipPath* pClipPath = (CPDF_ClipPath*)clipPath;
-        FX_DWORD i;
-        for (i = 0; i < pClipPath->GetPathCount(); i ++) {
-                CPDF_Path path = pClipPath->GetPath(i);
-                int iClipType = pClipPath->GetClipType(i);
-                if (path.GetPointCount() == 0) {
-                        // Empty clipping (totally clipped out)
-                        strClip << "0 0 m W n ";
-                } else {
-                        OutputPath(strClip, path);
-                        if (iClipType == FXFILL_WINDING)
-                                strClip << "W n\n";
-                        else
-                                strClip << "W* n\n";
-                }
-        }
-        CPDF_Dictionary* pDic = new CPDF_Dictionary;
-        CPDF_Stream* pStream = new CPDF_Stream(NULL,0, pDic);
-        pStream->SetData(strClip.GetBuffer(), strClip.GetSize(), FALSE, FALSE);
-        CPDF_Document* pDoc = pPage->m_pDocument;
-        if(!pDoc)
-                return;
-        pDoc->AddIndirectObject(pStream);
-
-        CPDF_Array* pContentArray = NULL;
-        if (pContentObj && pContentObj->GetType() == PDFOBJ_ARRAY)
-        {
-                pContentArray = (CPDF_Array*)pContentObj;
-                CPDF_Reference* pRef = new CPDF_Reference(pDoc, pStream->GetObjNum());
-                pContentArray->InsertAt(0, pRef);
-        }
-        else if(pContentObj && pContentObj->GetType() == PDFOBJ_REFERENCE)
-        {
-                CPDF_Reference* pReference = (CPDF_Reference*)pContentObj;
-                CPDF_Object* pDirectObj = pReference->GetDirect();
-                if(pDirectObj != NULL)
-                {
-                        if(pDirectObj->GetType() == PDFOBJ_ARRAY)
-                        {
-                                pContentArray = (CPDF_Array*)pDirectObj;
-                                CPDF_Reference* pRef = new CPDF_Reference(pDoc, pStream->GetObjNum());
-                                pContentArray->InsertAt(0, pRef);
-                        }
-                        else if(pDirectObj->GetType() == PDFOBJ_STREAM)
-                        {
-                                pContentArray = new CPDF_Array();
-                                pContentArray->AddReference(pDoc,pStream->GetObjNum());
-                                pContentArray->AddReference(pDoc,pDirectObj->GetObjNum());
-                                pPageDic->SetAtReference("Contents", pDoc, pDoc->AddIndirectObject(pContentArray));
-                        }
-                }
-        }
-}
-
+DLLEXPORT void STDCALL FPDFPage_SetMediaBox(FPDF_PAGE page,
+                                            float left,
+                                            float bottom,
+                                            float right,
+                                            float top) {
+  if (!page)
+    return;
+
+  CPDF_Page* pPage = (CPDF_Page*)page;
+  CPDF_Dictionary* pPageDict = pPage->m_pFormDict;
+  CPDF_Array* pMediaBoxArray = new CPDF_Array;
+  pMediaBoxArray->Add(new CPDF_Number(left));
+  pMediaBoxArray->Add(new CPDF_Number(bottom));
+  pMediaBoxArray->Add(new CPDF_Number(FX_FLOAT(right)));
+  pMediaBoxArray->Add(new CPDF_Number(FX_FLOAT(top)));
+  pPageDict->SetAt("MediaBox", pMediaBoxArray);
+}
+
+DLLEXPORT void STDCALL FPDFPage_SetCropBox(FPDF_PAGE page,
+                                           float left,
+                                           float bottom,
+                                           float right,
+                                           float top) {
+  if (!page)
+    return;
+
+  CPDF_Page* pPage = (CPDF_Page*)page;
+  CPDF_Dictionary* pPageDict = pPage->m_pFormDict;
+  CPDF_Array* pCropBoxArray = new CPDF_Array;
+  pCropBoxArray->Add(new CPDF_Number(left));
+  pCropBoxArray->Add(new CPDF_Number(bottom));
+  pCropBoxArray->Add(new CPDF_Number(FX_FLOAT(right)));
+  pCropBoxArray->Add(new CPDF_Number(FX_FLOAT(top)));
+  pPageDict->SetAt("CropBox", pCropBoxArray);
+}
+
+DLLEXPORT FPDF_BOOL STDCALL FPDFPage_GetMediaBox(FPDF_PAGE page,
+                                                 float* left,
+                                                 float* bottom,
+                                                 float* right,
+                                                 float* top) {
+  if (!page)
+    return FALSE;
+  CPDF_Page* pPage = (CPDF_Page*)page;
+  CPDF_Dictionary* pPageDict = pPage->m_pFormDict;
+  CPDF_Array* pArray = pPageDict->GetArray("MediaBox");
+  if (pArray) {
+    *left = pArray->GetFloat(0);
+    *bottom = pArray->GetFloat(1);
+    *right = pArray->GetFloat(2);
+    *top = pArray->GetFloat(3);
+    return TRUE;
+  }
+  return FALSE;
+}
+
+DLLEXPORT FPDF_BOOL STDCALL FPDFPage_GetCropBox(FPDF_PAGE page,
+                                                float* left,
+                                                float* bottom,
+                                                float* right,
+                                                float* top) {
+  if (!page)
+    return FALSE;
+  CPDF_Page* pPage = (CPDF_Page*)page;
+  CPDF_Dictionary* pPageDict = pPage->m_pFormDict;
+  CPDF_Array* pArray = pPageDict->GetArray("CropBox");
+  if (pArray) {
+    *left = pArray->GetFloat(0);
+    *bottom = pArray->GetFloat(1);
+    *right = pArray->GetFloat(2);
+    *top = pArray->GetFloat(3);
+    return TRUE;
+  }
+  return FALSE;
+}
+
+DLLEXPORT FPDF_BOOL STDCALL FPDFPage_TransFormWithClip(FPDF_PAGE page,
+                                                       FS_MATRIX* matrix,
+                                                       FS_RECTF* clipRect) {
+  if (!page)
+    return FALSE;
+
+  CFX_ByteTextBuf textBuf;
+  textBuf << "q ";
+  CFX_FloatRect rect(clipRect->left, clipRect->bottom, clipRect->right,
+                     clipRect->top);
+  rect.Normalize();
+  CFX_ByteString bsClipping;
+  bsClipping.Format("%f %f %f %f re W* n ", rect.left, rect.bottom,
+                    rect.Width(), rect.Height());
+  textBuf << bsClipping;
+
+  CFX_ByteString bsMatix;
+  bsMatix.Format("%f %f %f %f %f %f cm ", matrix->a, matrix->b, matrix->c,
+                 matrix->d, matrix->e, matrix->f);
+  textBuf << bsMatix;
+
+  CPDF_Page* pPage = (CPDF_Page*)page;
+  CPDF_Dictionary* pPageDic = pPage->m_pFormDict;
+  CPDF_Object* pContentObj = pPageDic ? pPageDic->GetElement("Contents") : NULL;
+  if (!pContentObj)
+    pContentObj = pPageDic ? pPageDic->GetArray("Contents") : NULL;
+  if (!pContentObj)
+    return FALSE;
+
+  CPDF_Dictionary* pDic = new CPDF_Dictionary;
+  CPDF_Stream* pStream = new CPDF_Stream(NULL, 0, pDic);
+  pStream->SetData(textBuf.GetBuffer(), textBuf.GetSize(), FALSE, FALSE);
+  CPDF_Document* pDoc = pPage->m_pDocument;
+  if (!pDoc)
+    return FALSE;
+  pDoc->AddIndirectObject(pStream);
+
+  pDic = new CPDF_Dictionary;
+  CPDF_Stream* pEndStream = new CPDF_Stream(NULL, 0, pDic);
+  pEndStream->SetData((const uint8_t*)" Q", 2, FALSE, FALSE);
+  pDoc->AddIndirectObject(pEndStream);
+
+  CPDF_Array* pContentArray = NULL;
+  if (pContentObj && pContentObj->GetType() == PDFOBJ_ARRAY) {
+    pContentArray = (CPDF_Array*)pContentObj;
+    CPDF_Reference* pRef = new CPDF_Reference(pDoc, pStream->GetObjNum());
+    pContentArray->InsertAt(0, pRef);
+    pContentArray->AddReference(pDoc, pEndStream);
+
+  } else if (pContentObj && pContentObj->GetType() == PDFOBJ_REFERENCE) {
+    CPDF_Reference* pReference = (CPDF_Reference*)pContentObj;
+    CPDF_Object* pDirectObj = pReference->GetDirect();
+    if (pDirectObj != NULL) {
+      if (pDirectObj->GetType() == PDFOBJ_ARRAY) {
+        pContentArray = (CPDF_Array*)pDirectObj;
+        CPDF_Reference* pRef = new CPDF_Reference(pDoc, pStream->GetObjNum());
+        pContentArray->InsertAt(0, pRef);
+        pContentArray->AddReference(pDoc, pEndStream);
+      } else if (pDirectObj->GetType() == PDFOBJ_STREAM) {
+        pContentArray = new CPDF_Array();
+        pContentArray->AddReference(pDoc, pStream->GetObjNum());
+        pContentArray->AddReference(pDoc, pDirectObj->GetObjNum());
+        pContentArray->AddReference(pDoc, pEndStream);
+        pPageDic->SetAtReference("Contents", pDoc,
+                                 pDoc->AddIndirectObject(pContentArray));
+      }
+    }
+  }
+
+  // Need to transform the patterns as well.
+  CPDF_Dictionary* pRes = pPageDic->GetDict(FX_BSTRC("Resources"));
+  if (pRes) {
+    CPDF_Dictionary* pPattenDict = pRes->GetDict(FX_BSTRC("Pattern"));
+    if (pPattenDict) {
+      FX_POSITION pos = pPattenDict->GetStartPos();
+      while (pos) {
+        CPDF_Dictionary* pDict = NULL;
+        CFX_ByteString key;
+        CPDF_Object* pObj = pPattenDict->GetNextElement(pos, key);
+        if (pObj->GetType() == PDFOBJ_REFERENCE)
+          pObj = pObj->GetDirect();
+        if (pObj->GetType() == PDFOBJ_DICTIONARY) {
+          pDict = (CPDF_Dictionary*)pObj;
+        } else if (pObj->GetType() == PDFOBJ_STREAM) {
+          pDict = ((CPDF_Stream*)pObj)->GetDict();
+        } else
+          continue;
+
+        CFX_AffineMatrix m = pDict->GetMatrix(FX_BSTRC("Matrix"));
+        CFX_AffineMatrix t = *(CFX_AffineMatrix*)matrix;
+        m.Concat(t);
+        pDict->SetAtMatrix(FX_BSTRC("Matrix"), m);
+      }
+    }
+  }
+
+  return TRUE;
+}
+
+DLLEXPORT void STDCALL
+FPDFPageObj_TransformClipPath(FPDF_PAGEOBJECT page_object,
+                              double a,
+                              double b,
+                              double c,
+                              double d,
+                              double e,
+                              double f) {
+  CPDF_PageObject* pPageObj = (CPDF_PageObject*)page_object;
+  if (pPageObj == NULL)
+    return;
+  CFX_AffineMatrix matrix((FX_FLOAT)a, (FX_FLOAT)b, (FX_FLOAT)c, (FX_FLOAT)d,
+                          (FX_FLOAT)e, (FX_FLOAT)f);
+
+  // Special treatment to shading object, because the ClipPath for shading
+  // object is already transformed.
+  if (pPageObj->m_Type != PDFPAGE_SHADING)
+    pPageObj->TransformClipPath(matrix);
+  pPageObj->TransformGeneralState(matrix);
+}
+
+DLLEXPORT FPDF_CLIPPATH STDCALL FPDF_CreateClipPath(float left,
+                                                    float bottom,
+                                                    float right,
+                                                    float top) {
+  CPDF_ClipPath* pNewClipPath = new CPDF_ClipPath();
+  pNewClipPath->GetModify();
+  CPDF_Path Path;
+  Path.GetModify();
+  Path.AppendRect(left, bottom, right, top);
+  pNewClipPath->AppendPath(Path, FXFILL_ALTERNATE, FALSE);
+  return pNewClipPath;
+}
+
+DLLEXPORT void STDCALL FPDF_DestroyClipPath(FPDF_CLIPPATH clipPath) {
+  delete (CPDF_ClipPath*)clipPath;
+}
+
+void OutputPath(CFX_ByteTextBuf& buf, CPDF_Path path) {
+  const CFX_PathData* pPathData = path;
+  if (pPathData == NULL)
+    return;
+
+  FX_PATHPOINT* pPoints = pPathData->GetPoints();
+
+  if (path.IsRect()) {
+    buf << (pPoints[0].m_PointX) << " " << (pPoints[0].m_PointY) << " "
+        << (pPoints[2].m_PointX - pPoints[0].m_PointX) << " "
+        << (pPoints[2].m_PointY - pPoints[0].m_PointY) << " re\n";
+    return;
+  }
+
+  CFX_ByteString temp;
+  for (int i = 0; i < pPathData->GetPointCount(); i++) {
+    buf << (pPoints[i].m_PointX) << " " << (pPoints[i].m_PointY);
+    int point_type = pPoints[i].m_Flag & FXPT_TYPE;
+    if (point_type == FXPT_MOVETO)
+      buf << " m\n";
+    else if (point_type == FXPT_BEZIERTO) {
+      buf << " " << (pPoints[i + 1].m_PointX) << " "
+          << (pPoints[i + 1].m_PointY) << " " << (pPoints[i + 2].m_PointX)
+          << " " << (pPoints[i + 2].m_PointY);
+      if (pPoints[i + 2].m_Flag & FXPT_CLOSEFIGURE)
+        buf << " c h\n";
+      else
+        buf << " c\n";
+      i += 2;
+    } else if (point_type == FXPT_LINETO) {
+      if (pPoints[i].m_Flag & FXPT_CLOSEFIGURE)
+        buf << " l h\n";
+      else
+        buf << " l\n";
+    }
+  }
+}
+
+DLLEXPORT void STDCALL FPDFPage_InsertClipPath(FPDF_PAGE page,
+                                               FPDF_CLIPPATH clipPath) {
+  if (!page)
+    return;
+  CPDF_Page* pPage = (CPDF_Page*)page;
+  CPDF_Dictionary* pPageDic = pPage->m_pFormDict;
+  CPDF_Object* pContentObj = pPageDic ? pPageDic->GetElement("Contents") : NULL;
+  if (!pContentObj)
+    pContentObj = pPageDic ? pPageDic->GetArray("Contents") : NULL;
+  if (!pContentObj)
+    return;
+
+  CFX_ByteTextBuf strClip;
+  CPDF_ClipPath* pClipPath = (CPDF_ClipPath*)clipPath;
+  FX_DWORD i;
+  for (i = 0; i < pClipPath->GetPathCount(); i++) {
+    CPDF_Path path = pClipPath->GetPath(i);
+    int iClipType = pClipPath->GetClipType(i);
+    if (path.GetPointCount() == 0) {
+      // Empty clipping (totally clipped out)
+      strClip << "0 0 m W n ";
+    } else {
+      OutputPath(strClip, path);
+      if (iClipType == FXFILL_WINDING)
+        strClip << "W n\n";
+      else
+        strClip << "W* n\n";
+    }
+  }
+  CPDF_Dictionary* pDic = new CPDF_Dictionary;
+  CPDF_Stream* pStream = new CPDF_Stream(NULL, 0, pDic);
+  pStream->SetData(strClip.GetBuffer(), strClip.GetSize(), FALSE, FALSE);
+  CPDF_Document* pDoc = pPage->m_pDocument;
+  if (!pDoc)
+    return;
+  pDoc->AddIndirectObject(pStream);
+
+  CPDF_Array* pContentArray = NULL;
+  if (pContentObj && pContentObj->GetType() == PDFOBJ_ARRAY) {
+    pContentArray = (CPDF_Array*)pContentObj;
+    CPDF_Reference* pRef = new CPDF_Reference(pDoc, pStream->GetObjNum());
+    pContentArray->InsertAt(0, pRef);
+  } else if (pContentObj && pContentObj->GetType() == PDFOBJ_REFERENCE) {
+    CPDF_Reference* pReference = (CPDF_Reference*)pContentObj;
+    CPDF_Object* pDirectObj = pReference->GetDirect();
+    if (pDirectObj != NULL) {
+      if (pDirectObj->GetType() == PDFOBJ_ARRAY) {
+        pContentArray = (CPDF_Array*)pDirectObj;
+        CPDF_Reference* pRef = new CPDF_Reference(pDoc, pStream->GetObjNum());
+        pContentArray->InsertAt(0, pRef);
+      } else if (pDirectObj->GetType() == PDFOBJ_STREAM) {
+        pContentArray = new CPDF_Array();
+        pContentArray->AddReference(pDoc, pStream->GetObjNum());
+        pContentArray->AddReference(pDoc, pDirectObj->GetObjNum());
+        pPageDic->SetAtReference("Contents", pDoc,
+                                 pDoc->AddIndirectObject(pContentArray));
+      }
+    }
+  }
+}