clang-format all pdfium code.

core/src/fpdftext/fpdf_text_search.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 "../../include/fpdfapi/fpdf_pageobj.h"
 #include "../../include/fpdfapi/fpdf_page.h"
-class CPDF_TextStream
-{
-public:
-    CPDF_TextStream(CFX_WideTextBuf& buffer, FX_BOOL bUseLF, CFX_PtrArray* pObjArray);
-    ~CPDF_TextStream() {}
-    FX_BOOL ProcessObject(const CPDF_TextObject* pObj, FX_BOOL bFirstLine);
-    CFX_WideTextBuf&    m_Buffer;
-    FX_BOOL                             m_bUseLF;
-    CFX_PtrArray*               m_pObjArray;
-    const CPDF_TextObject*      m_pLastObj;
+class CPDF_TextStream {
+ public:
+  CPDF_TextStream(CFX_WideTextBuf& buffer,
+                  FX_BOOL bUseLF,
+                  CFX_PtrArray* pObjArray);
+  ~CPDF_TextStream() {}
+  FX_BOOL ProcessObject(const CPDF_TextObject* pObj, FX_BOOL bFirstLine);
+  CFX_WideTextBuf& m_Buffer;
+  FX_BOOL m_bUseLF;
+  CFX_PtrArray* m_pObjArray;
+  const CPDF_TextObject* m_pLastObj;
 };
-CPDF_TextStream::CPDF_TextStream(CFX_WideTextBuf& buffer, FX_BOOL bUseLF, CFX_PtrArray* pObjArray) : m_Buffer(buffer)
-{
-    m_pLastObj = NULL;
-    m_bUseLF = bUseLF;
-    m_pObjArray = pObjArray;
-}
-FX_BOOL FPDFText_IsSameTextObject(const CPDF_TextObject* pTextObj1, const CPDF_TextObject* pTextObj2)
-{
-    if (!pTextObj1 || !pTextObj2) {
-        return FALSE;
-    }
-    CFX_FloatRect rcPreObj(pTextObj2->m_Left, pTextObj2->m_Bottom, pTextObj2->m_Right, pTextObj2->m_Top);
-    CFX_FloatRect rcCurObj(pTextObj1->m_Left, pTextObj1->m_Bottom, pTextObj1->m_Right, pTextObj1->m_Top);
-    if (rcPreObj.IsEmpty() && rcCurObj.IsEmpty()) {
-        return TRUE;
-    }
-    if (!rcPreObj.IsEmpty() || !rcCurObj.IsEmpty()) {
-        rcPreObj.Intersect(rcCurObj);
-        if (rcPreObj.IsEmpty()) {
-            return FALSE;
-        }
-        if (FXSYS_fabs(rcPreObj.Width() - rcCurObj.Width()) > rcCurObj.Width() / 2) {
-            return FALSE;
-        }
-        if (pTextObj2->GetFontSize() != pTextObj1->GetFontSize()) {
-            return FALSE;
-        }
-    }
-    int nPreCount = pTextObj2->CountItems();
-    int nCurCount = pTextObj1->CountItems();
-    if (nPreCount != nCurCount) {
-        return FALSE;
-    }
-    for (int i = 0; i < nPreCount; i++) {
-        CPDF_TextObjectItem itemPer, itemCur;
-        pTextObj2->GetItemInfo(i, &itemPer);
-        pTextObj1->GetItemInfo(i, &itemCur);
-        if (itemCur.m_CharCode != itemPer.m_CharCode) {
-            return FALSE;
-        }
-    }
+CPDF_TextStream::CPDF_TextStream(CFX_WideTextBuf& buffer,
+                                 FX_BOOL bUseLF,
+                                 CFX_PtrArray* pObjArray)
+    : m_Buffer(buffer) {
+  m_pLastObj = NULL;
+  m_bUseLF = bUseLF;
+  m_pObjArray = pObjArray;
+}
+FX_BOOL FPDFText_IsSameTextObject(const CPDF_TextObject* pTextObj1,
+                                  const CPDF_TextObject* pTextObj2) {
+  if (!pTextObj1 || !pTextObj2) {
+    return FALSE;
+  }
+  CFX_FloatRect rcPreObj(pTextObj2->m_Left, pTextObj2->m_Bottom,
+                         pTextObj2->m_Right, pTextObj2->m_Top);
+  CFX_FloatRect rcCurObj(pTextObj1->m_Left, pTextObj1->m_Bottom,
+                         pTextObj1->m_Right, pTextObj1->m_Top);
+  if (rcPreObj.IsEmpty() && rcCurObj.IsEmpty()) {
     return TRUE;
-}
-int GetCharWidth(FX_DWORD charCode, CPDF_Font* pFont)
-{
-    if(charCode == -1) {
-        return 0;
-    }
-    int w = pFont->GetCharWidthF(charCode);
-    if(w == 0) {
-        CFX_ByteString str;
-        pFont->AppendChar(str, charCode);
-        w = pFont->GetStringWidth(str, 1);
-        if(w == 0) {
-            FX_RECT BBox;
-            pFont->GetCharBBox(charCode, BBox);
-            w = BBox.right - BBox.left;
-        }
-    }
-    return w;
-}
-int FPDFText_ProcessInterObj(const CPDF_TextObject* pPrevObj, const CPDF_TextObject* pObj)
-{
-    if(FPDFText_IsSameTextObject(pPrevObj, pObj)) {
-        return -1;
-    }
+  }
+  if (!rcPreObj.IsEmpty() || !rcCurObj.IsEmpty()) {
+    rcPreObj.Intersect(rcCurObj);
+    if (rcPreObj.IsEmpty()) {
+      return FALSE;
+    }
+    if (FXSYS_fabs(rcPreObj.Width() - rcCurObj.Width()) >
+        rcCurObj.Width() / 2) {
+      return FALSE;
+    }
+    if (pTextObj2->GetFontSize() != pTextObj1->GetFontSize()) {
+      return FALSE;
+    }
+  }
+  int nPreCount = pTextObj2->CountItems();
+  int nCurCount = pTextObj1->CountItems();
+  if (nPreCount != nCurCount) {
+    return FALSE;
+  }
+  for (int i = 0; i < nPreCount; i++) {
+    CPDF_TextObjectItem itemPer, itemCur;
+    pTextObj2->GetItemInfo(i, &itemPer);
+    pTextObj1->GetItemInfo(i, &itemCur);
+    if (itemCur.m_CharCode != itemPer.m_CharCode) {
+      return FALSE;
+    }
+  }
+  return TRUE;
+}
+int GetCharWidth(FX_DWORD charCode, CPDF_Font* pFont) {
+  if (charCode == -1) {
+    return 0;
+  }
+  int w = pFont->GetCharWidthF(charCode);
+  if (w == 0) {
+    CFX_ByteString str;
+    pFont->AppendChar(str, charCode);
+    w = pFont->GetStringWidth(str, 1);
+    if (w == 0) {
+      FX_RECT BBox;
+      pFont->GetCharBBox(charCode, BBox);
+      w = BBox.right - BBox.left;
+    }
+  }
+  return w;
+}
+int FPDFText_ProcessInterObj(const CPDF_TextObject* pPrevObj,
+                             const CPDF_TextObject* pObj) {
+  if (FPDFText_IsSameTextObject(pPrevObj, pObj)) {
+    return -1;
+  }
+  CPDF_TextObjectItem item;
+  int nItem = pPrevObj->CountItems();
+  pPrevObj->GetItemInfo(nItem - 1, &item);
+  FX_WCHAR preChar = 0, curChar = 0;
+  CFX_WideString wstr =
+      pPrevObj->GetFont()->UnicodeFromCharCode(item.m_CharCode);
+  if (wstr.GetLength()) {
+    preChar = wstr.GetAt(0);
+  }
+  FX_FLOAT last_pos = item.m_OriginX;
+  int nLastWidth = GetCharWidth(item.m_CharCode, pPrevObj->GetFont());
+  FX_FLOAT last_width = nLastWidth * pPrevObj->GetFontSize() / 1000;
+  last_width = FXSYS_fabs(last_width);
+  pObj->GetItemInfo(0, &item);
+  wstr = pObj->GetFont()->UnicodeFromCharCode(item.m_CharCode);
+  if (wstr.GetLength()) {
+    curChar = wstr.GetAt(0);
+  }
+  int nThisWidth = GetCharWidth(item.m_CharCode, pObj->GetFont());
+  FX_FLOAT this_width = nThisWidth * pObj->GetFontSize() / 1000;
+  this_width = FXSYS_fabs(this_width);
+  FX_FLOAT threshold =
+      last_width > this_width ? last_width / 4 : this_width / 4;
+  CFX_AffineMatrix prev_matrix, prev_reverse;
+  pPrevObj->GetTextMatrix(&prev_matrix);
+  prev_reverse.SetReverse(prev_matrix);
+  FX_FLOAT x = pObj->GetPosX(), y = pObj->GetPosY();
+  prev_reverse.Transform(x, y);
+  if (FXSYS_fabs(y) > threshold * 2) {
+    return 2;
+  }
+  threshold = (FX_FLOAT)(nLastWidth > nThisWidth ? nLastWidth : nThisWidth);
+  threshold = threshold > 400
+                  ? (threshold < 700 ? threshold / 4 : threshold / 5)
+                  : (threshold / 2);
+  threshold *= nLastWidth > nThisWidth ? FXSYS_fabs(pPrevObj->GetFontSize())
+                                       : FXSYS_fabs(pObj->GetFontSize());
+  threshold /= 1000;
+  if (FXSYS_fabs(last_pos + last_width - x) > threshold && curChar != L' ' &&
+      preChar != L' ')
+    if (curChar != L' ' && preChar != L' ') {
+      if ((x - last_pos - last_width) > threshold ||
+          (last_pos - x - last_width) > threshold) {
+        return 1;
+      }
+      if (x < 0 && (last_pos - x - last_width) > threshold) {
+        return 1;
+      }
+      if ((x - last_pos - last_width) > this_width ||
+          (x - last_pos - this_width) > last_width) {
+        return 1;
+      }
+    }
+  if (last_pos + last_width > x + this_width && curChar == L' ') {
+    return 3;
+  }
+  return 0;
+}
+FX_BOOL CPDF_TextStream::ProcessObject(const CPDF_TextObject* pObj,
+                                       FX_BOOL bFirstLine) {
+  CPDF_Font* pFont = pObj->GetFont();
+  CFX_AffineMatrix matrix;
+  pObj->GetTextMatrix(&matrix);
+  int item_index = 0;
+  if (m_pLastObj) {
+    int result = FPDFText_ProcessInterObj(m_pLastObj, pObj);
+    if (result == 2) {
+      int len = m_Buffer.GetLength();
+      if (len && m_bUseLF && m_Buffer.GetBuffer()[len - 1] == L'-') {
+        m_Buffer.Delete(len - 1, 1);
+        if (m_pObjArray) {
+          m_pObjArray->RemoveAt((len - 1) * 2, 2);
+        }
+      } else {
+        if (bFirstLine) {
+          return TRUE;
+        }
+        if (m_bUseLF) {
+          m_Buffer.AppendChar(L'\r');
+          m_Buffer.AppendChar(L'\n');
+          if (m_pObjArray) {
+            for (int i = 0; i < 4; i++) {
+              m_pObjArray->Add(NULL);
+            }
+          }
+        } else {
+          m_Buffer.AppendChar(' ');
+          if (m_pObjArray) {
+            m_pObjArray->Add(NULL);
+            m_pObjArray->Add(NULL);
+          }
+        }
+      }
+    } else if (result == 1) {
+      m_Buffer.AppendChar(L' ');
+      if (m_pObjArray) {
+        m_pObjArray->Add(NULL);
+        m_pObjArray->Add(NULL);
+      }
+    } else if (result == -1) {
+      m_pLastObj = pObj;
+      return FALSE;
+    } else if (result == 3) {
+      item_index = 1;
+    }
+  }
+  m_pLastObj = pObj;
+  int nItems = pObj->CountItems();
+  FX_FLOAT Ignorekerning = 0;
+  for (int i = 1; i < nItems - 1; i += 2) {
     CPDF_TextObjectItem item;
-    int nItem = pPrevObj->CountItems();
-    pPrevObj->GetItemInfo(nItem - 1, &item);
-    FX_WCHAR preChar = 0, curChar = 0;
-    CFX_WideString wstr = pPrevObj->GetFont()->UnicodeFromCharCode(item.m_CharCode);
-    if(wstr.GetLength()) {
-        preChar = wstr.GetAt(0);
-    }
-    FX_FLOAT last_pos = item.m_OriginX;
-    int nLastWidth = GetCharWidth(item.m_CharCode, pPrevObj->GetFont());
-    FX_FLOAT last_width = nLastWidth * pPrevObj->GetFontSize() / 1000;
-    last_width = FXSYS_fabs(last_width);
-    pObj->GetItemInfo(0, &item);
-    wstr = pObj->GetFont()->UnicodeFromCharCode(item.m_CharCode);
-    if(wstr.GetLength()) {
-        curChar = wstr.GetAt(0);
-    }
-    int nThisWidth = GetCharWidth(item.m_CharCode, pObj->GetFont());
-    FX_FLOAT this_width = nThisWidth * pObj->GetFontSize() / 1000;
-    this_width = FXSYS_fabs(this_width);
-    FX_FLOAT threshold = last_width > this_width ? last_width / 4 : this_width / 4;
-    CFX_AffineMatrix prev_matrix, prev_reverse;
-    pPrevObj->GetTextMatrix(&prev_matrix);
-    prev_reverse.SetReverse(prev_matrix);
-    FX_FLOAT x = pObj->GetPosX(), y = pObj->GetPosY();
-    prev_reverse.Transform(x, y);
-    if (FXSYS_fabs(y) > threshold * 2) {
-        return 2;
-    }
-    threshold = (FX_FLOAT)(nLastWidth > nThisWidth ? nLastWidth : nThisWidth);
-    threshold = threshold > 400 ? (threshold < 700 ? threshold / 4 :  threshold / 5) : (threshold / 2);
-    threshold *= nLastWidth > nThisWidth ? FXSYS_fabs(pPrevObj->GetFontSize()) : FXSYS_fabs(pObj->GetFontSize());
-    threshold /= 1000;
-    if (FXSYS_fabs(last_pos + last_width - x) > threshold && curChar != L' ' && preChar != L' ')
-        if(curChar != L' ' && preChar != L' ') {
-            if((x - last_pos - last_width) > threshold || (last_pos - x - last_width) > threshold) {
-                return 1;
-            }
-            if(x < 0 && (last_pos - x - last_width) > threshold) {
-                return 1;
-            }
-            if((x - last_pos - last_width) > this_width || (x - last_pos - this_width) > last_width ) {
-                return 1;
-            }
-        }
-    if(last_pos + last_width > x + this_width && curChar == L' ') {
-        return 3;
-    }
-    return 0;
-}
-FX_BOOL CPDF_TextStream::ProcessObject(const CPDF_TextObject* pObj, FX_BOOL bFirstLine)
-{
-    CPDF_Font* pFont = pObj->GetFont();
-    CFX_AffineMatrix matrix;
-    pObj->GetTextMatrix(&matrix);
-    int item_index = 0;
-    if (m_pLastObj) {
-        int result = FPDFText_ProcessInterObj(m_pLastObj, pObj);
-        if (result == 2) {
-            int len = m_Buffer.GetLength();
-            if (len && m_bUseLF && m_Buffer.GetBuffer()[len - 1] == L'-') {
-                m_Buffer.Delete(len - 1, 1);
-                if (m_pObjArray) {
-                    m_pObjArray->RemoveAt((len - 1) * 2, 2);
-                }
-            } else {
-                if (bFirstLine) {
-                    return TRUE;
-                }
-                if (m_bUseLF) {
-                    m_Buffer.AppendChar(L'\r');
-                    m_Buffer.AppendChar(L'\n');
-                    if (m_pObjArray) {
-                        for (int i = 0; i < 4; i ++) {
-                            m_pObjArray->Add(NULL);
-                        }
-                    }
-                } else {
-                    m_Buffer.AppendChar(' ');
-                    if (m_pObjArray) {
-                        m_pObjArray->Add(NULL);
-                        m_pObjArray->Add(NULL);
-                    }
-                }
-            }
-        } else if (result == 1) {
-            m_Buffer.AppendChar(L' ');
-            if (m_pObjArray) {
-                m_pObjArray->Add(NULL);
-                m_pObjArray->Add(NULL);
-            }
-        } else if (result == -1) {
-            m_pLastObj = pObj;
-            return FALSE;
-        } else if (result == 3) {
-            item_index = 1;
-        }
-    }
-    m_pLastObj = pObj;
-    int nItems = pObj->CountItems();
-    FX_FLOAT Ignorekerning = 0;
-    for(int i = 1; i < nItems - 1; i += 2) {
-        CPDF_TextObjectItem item;
-        pObj->GetItemInfo(i, &item);
-        if (item.m_CharCode == (FX_DWORD) - 1) {
-            if(i == 1) {
-                Ignorekerning = item.m_OriginX;
-            } else if(Ignorekerning > item.m_OriginX) {
-                Ignorekerning = item.m_OriginX;
-            }
-        } else {
-            Ignorekerning = 0;
-            break;
-        }
-    }
-    FX_FLOAT spacing = 0;
-    for (; item_index < nItems; item_index ++) {
-        CPDF_TextObjectItem item;
-        pObj->GetItemInfo(item_index, &item);
-        if (item.m_CharCode == (FX_DWORD) - 1) {
-            CFX_WideString wstr = m_Buffer.GetWideString();
-            if (wstr.IsEmpty() || wstr.GetAt(wstr.GetLength() - 1) == L' ') {
-                continue;
-            }
-            FX_FLOAT fontsize_h = pObj->m_TextState.GetFontSizeH();
-            spacing = -fontsize_h * (item.m_OriginX - Ignorekerning) / 1000;
-            continue;
-        }
-        FX_FLOAT charSpace = pObj->m_TextState.GetObject()->m_CharSpace;
-        if(nItems > 3 && !spacing) {
-            charSpace = 0;
-        }
-        if((spacing || charSpace) && item_index > 0) {
-            int last_width = 0;
-            FX_FLOAT fontsize_h = pObj->m_TextState.GetFontSizeH();
-            FX_DWORD space_charcode = pFont->CharCodeFromUnicode(' ');
-            FX_FLOAT threshold = 0;
-            if (space_charcode != -1) {
-                threshold = fontsize_h * pFont->GetCharWidthF(space_charcode) / 1000 ;
-            }
-            if(threshold > fontsize_h / 3) {
-                threshold = 0;
-            } else {
-                threshold /= 2;
-            }
-            if (threshold == 0) {
-                threshold = fontsize_h;
-                int this_width = FXSYS_abs(GetCharWidth(item.m_CharCode, pFont));
-                threshold = this_width > last_width ? (FX_FLOAT)this_width : (FX_FLOAT)last_width;
-                int nDivide = 6;
-                if (threshold < 300) {
-                    nDivide = 2;
-                } else if (threshold < 500) {
-                    nDivide = 4;
-                } else if (threshold < 700) {
-                    nDivide = 5;
-                }
-                threshold = threshold / nDivide;
-                threshold = fontsize_h * threshold / 1000;
-            }
-            if(charSpace > 0.001) {
-                spacing += matrix.TransformDistance(charSpace);
-            } else if(charSpace < -0.001) {
-                spacing -= matrix.TransformDistance(FXSYS_fabs(charSpace));
-            }
-            if (threshold && (spacing && spacing >= threshold) ) {
-                m_Buffer.AppendChar(L' ');
-                if (m_pObjArray) {
-                    m_pObjArray->Add(NULL);
-                    m_pObjArray->Add(NULL);
-                }
-            }
-            if (item.m_CharCode == (FX_DWORD) - 1) {
-                continue;
-            }
-            spacing = 0;
-        }
-        CFX_WideString unicode_str = pFont->UnicodeFromCharCode(item.m_CharCode);
-        if (unicode_str.IsEmpty()) {
-            m_Buffer.AppendChar((FX_WCHAR)item.m_CharCode);
-            if (m_pObjArray) {
-                m_pObjArray->Add((void*)pObj);
-                m_pObjArray->Add((void*)(intptr_t)item_index);
-            }
-        } else {
-            m_Buffer << unicode_str;
-            if (m_pObjArray) {
-                for (int i = 0; i < unicode_str.GetLength(); i ++) {
-                    m_pObjArray->Add((void*)pObj);
-                    m_pObjArray->Add((void*)(intptr_t)item_index);
-                }
-            }
-        }
-    }
-    return FALSE;
-}
-void _PDF_GetTextStream_Unicode(CFX_WideTextBuf& buffer, CPDF_PageObjects* pPage, FX_BOOL bUseLF,
-                                CFX_PtrArray* pObjArray)
-{
-    CPDF_TextStream textstream(buffer, bUseLF, pObjArray);
-    FX_POSITION pos = pPage->GetFirstObjectPosition();
-    while (pos) {
-        CPDF_PageObject* pObject = pPage->GetNextObject(pos);
-        if (pObject == NULL) {
-            continue;
-        }
-        if (pObject->m_Type != PDFPAGE_TEXT) {
-            continue;
-        }
-        textstream.ProcessObject((CPDF_TextObject*)pObject, FALSE);
-    }
-}
-CFX_WideString PDF_GetFirstTextLine_Unicode(CPDF_Document* pDoc, CPDF_Dictionary* pPage)
-{
-    CFX_WideTextBuf buffer;
-    buffer.EstimateSize(0, 1024);
-    CPDF_Page page;
-    page.Load(pDoc, pPage);
-    CPDF_ParseOptions options;
-    options.m_bTextOnly = TRUE;
-    options.m_bSeparateForm = FALSE;
-    page.ParseContent(&options);
-    CPDF_TextStream textstream(buffer, FALSE, NULL);
-    FX_POSITION pos = page.GetFirstObjectPosition();
-    while (pos) {
-        CPDF_PageObject* pObject = page.GetNextObject(pos);
-        if (pObject->m_Type != PDFPAGE_TEXT) {
-            continue;
-        }
-        if (textstream.ProcessObject((CPDF_TextObject*)pObject, TRUE)) {
-            break;
-        }
-    }
-    return buffer.GetWideString();
-}
+    pObj->GetItemInfo(i, &item);
+    if (item.m_CharCode == (FX_DWORD)-1) {
+      if (i == 1) {
+        Ignorekerning = item.m_OriginX;
+      } else if (Ignorekerning > item.m_OriginX) {
+        Ignorekerning = item.m_OriginX;
+      }
+    } else {
+      Ignorekerning = 0;
+      break;
+    }
+  }
+  FX_FLOAT spacing = 0;
+  for (; item_index < nItems; item_index++) {
+    CPDF_TextObjectItem item;
+    pObj->GetItemInfo(item_index, &item);
+    if (item.m_CharCode == (FX_DWORD)-1) {
+      CFX_WideString wstr = m_Buffer.GetWideString();
+      if (wstr.IsEmpty() || wstr.GetAt(wstr.GetLength() - 1) == L' ') {
+        continue;
+      }
+      FX_FLOAT fontsize_h = pObj->m_TextState.GetFontSizeH();
+      spacing = -fontsize_h * (item.m_OriginX - Ignorekerning) / 1000;
+      continue;
+    }
+    FX_FLOAT charSpace = pObj->m_TextState.GetObject()->m_CharSpace;
+    if (nItems > 3 && !spacing) {
+      charSpace = 0;
+    }
+    if ((spacing || charSpace) && item_index > 0) {
+      int last_width = 0;
+      FX_FLOAT fontsize_h = pObj->m_TextState.GetFontSizeH();
+      FX_DWORD space_charcode = pFont->CharCodeFromUnicode(' ');
+      FX_FLOAT threshold = 0;
+      if (space_charcode != -1) {
+        threshold = fontsize_h * pFont->GetCharWidthF(space_charcode) / 1000;
+      }
+      if (threshold > fontsize_h / 3) {
+        threshold = 0;
+      } else {
+        threshold /= 2;
+      }
+      if (threshold == 0) {
+        threshold = fontsize_h;
+        int this_width = FXSYS_abs(GetCharWidth(item.m_CharCode, pFont));
+        threshold = this_width > last_width ? (FX_FLOAT)this_width
+                                            : (FX_FLOAT)last_width;
+        int nDivide = 6;
+        if (threshold < 300) {
+          nDivide = 2;
+        } else if (threshold < 500) {
+          nDivide = 4;
+        } else if (threshold < 700) {
+          nDivide = 5;
+        }
+        threshold = threshold / nDivide;
+        threshold = fontsize_h * threshold / 1000;
+      }
+      if (charSpace > 0.001) {
+        spacing += matrix.TransformDistance(charSpace);
+      } else if (charSpace < -0.001) {
+        spacing -= matrix.TransformDistance(FXSYS_fabs(charSpace));
+      }
+      if (threshold && (spacing && spacing >= threshold)) {
+        m_Buffer.AppendChar(L' ');
+        if (m_pObjArray) {
+          m_pObjArray->Add(NULL);
+          m_pObjArray->Add(NULL);
+        }
+      }
+      if (item.m_CharCode == (FX_DWORD)-1) {
+        continue;
+      }
+      spacing = 0;
+    }
+    CFX_WideString unicode_str = pFont->UnicodeFromCharCode(item.m_CharCode);
+    if (unicode_str.IsEmpty()) {
+      m_Buffer.AppendChar((FX_WCHAR)item.m_CharCode);
+      if (m_pObjArray) {
+        m_pObjArray->Add((void*)pObj);
+        m_pObjArray->Add((void*)(intptr_t)item_index);
+      }
+    } else {
+      m_Buffer << unicode_str;
+      if (m_pObjArray) {
+        for (int i = 0; i < unicode_str.GetLength(); i++) {
+          m_pObjArray->Add((void*)pObj);
+          m_pObjArray->Add((void*)(intptr_t)item_index);
+        }
+      }
+    }
+  }
+  return FALSE;
+}
+void _PDF_GetTextStream_Unicode(CFX_WideTextBuf& buffer,
+                                CPDF_PageObjects* pPage,
+                                FX_BOOL bUseLF,
+                                CFX_PtrArray* pObjArray) {
+  CPDF_TextStream textstream(buffer, bUseLF, pObjArray);
+  FX_POSITION pos = pPage->GetFirstObjectPosition();
+  while (pos) {
+    CPDF_PageObject* pObject = pPage->GetNextObject(pos);
+    if (pObject == NULL) {
+      continue;
+    }
+    if (pObject->m_Type != PDFPAGE_TEXT) {
+      continue;
+    }
+    textstream.ProcessObject((CPDF_TextObject*)pObject, FALSE);
+  }
+}
+CFX_WideString PDF_GetFirstTextLine_Unicode(CPDF_Document* pDoc,
+                                            CPDF_Dictionary* pPage) {
+  CFX_WideTextBuf buffer;
+  buffer.EstimateSize(0, 1024);
+  CPDF_Page page;
+  page.Load(pDoc, pPage);
+  CPDF_ParseOptions options;
+  options.m_bTextOnly = TRUE;
+  options.m_bSeparateForm = FALSE;
+  page.ParseContent(&options);
+  CPDF_TextStream textstream(buffer, FALSE, NULL);
+  FX_POSITION pos = page.GetFirstObjectPosition();
+  while (pos) {
+    CPDF_PageObject* pObject = page.GetNextObject(pos);
+    if (pObject->m_Type != PDFPAGE_TEXT) {
+      continue;
+    }
+    if (textstream.ProcessObject((CPDF_TextObject*)pObject, TRUE)) {
+      break;
+    }
+  }
+  return buffer.GetWideString();
+}