diff options
Diffstat (limited to 'src/thirdparty/MediaInfo/MediaInfo/Text/File_Pdf.cpp')
| -rw-r--r-- | src/thirdparty/MediaInfo/MediaInfo/Text/File_Pdf.cpp | 683 |
1 files changed, 0 insertions, 683 deletions
diff --git a/src/thirdparty/MediaInfo/MediaInfo/Text/File_Pdf.cpp b/src/thirdparty/MediaInfo/MediaInfo/Text/File_Pdf.cpp deleted file mode 100644 index ed97ff96e..000000000 --- a/src/thirdparty/MediaInfo/MediaInfo/Text/File_Pdf.cpp +++ /dev/null @@ -1,683 +0,0 @@ -/* Copyright (c) MediaArea.net SARL. All Rights Reserved. - * - * Use of this source code is governed by a BSD-style license that can - * be found in the License.html file in the root of the source tree. - */ - -//--------------------------------------------------------------------------- -// Pre-compilation -#include "MediaInfo/PreComp.h" -#ifdef __BORLANDC__ - #pragma hdrstop -#endif -//--------------------------------------------------------------------------- - -//--------------------------------------------------------------------------- -#include "MediaInfo/Setup.h" -//--------------------------------------------------------------------------- - -//--------------------------------------------------------------------------- -#if defined(MEDIAINFO_PDF_YES) -//--------------------------------------------------------------------------- - -//--------------------------------------------------------------------------- -#include "MediaInfo/Text/File_Pdf.h" -#include "MediaInfo/Tag/File_Xmp.h" -#include <cstdlib> -#include <algorithm> -using namespace std; -//--------------------------------------------------------------------------- - -namespace MediaInfoLib -{ - -//*************************************************************************** -// Constructor/Destructor -//*************************************************************************** - -//--------------------------------------------------------------------------- -File_Pdf::File_Pdf() -:File__Analyze() -{ -} - -//*************************************************************************** -// Streams management -//*************************************************************************** - -//--------------------------------------------------------------------------- -void File_Pdf::Streams_Accept() -{ - Fill(Stream_General, 0, General_Format, "PDF"); - - Stream_Prepare(Stream_Text); - Fill(Stream_Text, 0, "Format", "PDF"); -} - -//*************************************************************************** -// Buffer - File header -//*************************************************************************** - -//--------------------------------------------------------------------------- -bool File_Pdf::FileHeader_Begin() -{ - //Synchro - if (5>Buffer_Size) - return false; - if (Buffer[0]!=0x25 //"%PDF-" - || Buffer[1]!=0x50 - || Buffer[2]!=0x44 - || Buffer[3]!=0x46 - || Buffer[4]!=0x2D) - { - Reject(); - return false; - } - - Accept(); - - //Temp - Catalog_Level=0; - Offsets_Max=0; - - //All should be OK... - return true; -} - -//--------------------------------------------------------------------------- -void File_Pdf::FileHeader_Parse() -{ - string PdfHeader; - Get_String(SizeOfLine(), PdfHeader, "Header"); - for (;;) - { - int64u CommentSize=SizeOfLine(); - if (Buffer_Offset+Element_Offset>=Buffer_Size) - { - Element_WaitForMoreData(); - return; - } - if (Buffer[Buffer_Offset+Element_Offset]!='%') - break; - Skip_String(CommentSize, "Comment"); - } - - //Filling - Fill(Stream_General, 0, General_Format_Version, PdfHeader.substr(5)); - - GoToFromEnd(9+2+10+2+5+2); // "startxref" + EOL + 10max digits + EOL + "%%EOF" + EOL - State=State_Parsing_startxref; -} - -//*************************************************************************** -// Buffer - Global -//*************************************************************************** - -//--------------------------------------------------------------------------- -void File_Pdf::Read_Buffer_Continue() -{ - switch (State) - { - case State_Parsing_xref : xref(); if (!Element_IsWaitingForMoreData()) trailer(); break; - case State_Parsing_startxref : eof(); startxref(); break; - case State_Parsing_object : break; //Using elements - default : Finish(); - } -} - -//*************************************************************************** -// Buffer - Per element -//*************************************************************************** - -//--------------------------------------------------------------------------- -bool File_Pdf::Header_Begin() -{ - //Offsets_Current=Offsets.find(Objects_Current->second.Offset); - //offsets::iterator Offsets_Next=Offsets_Current; - //Offsets_Next++; - //if (Offsets_Next!=Offsets.end() && Offsets_Next->first>File_Offset+Buffer_Size) - //{ - // Element_WaitForMoreData(); - // return false; - //} - - return true; -} - -//--------------------------------------------------------------------------- -void File_Pdf::Header_Parse() -{ - offsets::iterator Offsets_Next=upper_bound(Offsets.begin(), Offsets.end(), (int32u)(File_Offset+Buffer_Offset)); - if (Offsets_Next!=Offsets.end() && *Offsets_Next>File_Offset+Buffer_Size) - { - Element_WaitForMoreData(); - return; - } - - int64u Size; - //if (Offsets_Current==Offsets.end()) - // Size=Offsets_Max-(File_Offset+Buffer_Offset); - //else - // Size=Offsets_Current->first-(File_Offset+Buffer_Offset); - if (Offsets_Next==Offsets.end()) - Size=Offsets_Max-(File_Offset+Buffer_Offset); - else - Size=*Offsets_Next-(File_Offset+Buffer_Offset); - - Header_Fill_Size(Size); -} - -//--------------------------------------------------------------------------- -void File_Pdf::Data_Parse() -{ - Element_Name("Object"); - - string Line; - Get_String(SizeOfLine(), Line, "Header"); - - size_t Space_Pos=Line.find(' '); - int32u ObjectNumber=Ztring().From_UTF8(Line.substr(0, Space_Pos)).To_int32u(); - Element_Info1(ObjectNumber); - objects::iterator Object=Objects.find(ObjectNumber); - if (Object==Objects.end()) - Skip_XX(Element_Size-Element_Offset, "Data"); - else - switch(Object->second.Type) - { - case Type_Root : Object_Root(); break; - case Type_Info : Object_Info(); break; - case Type_Metadata : Object_Metadata(); break; - default : Skip_XX(Element_Size-Element_Offset, "Data"); - } - - for (;;) - { - Objects_Current->second.BottomPos++; - if (Objects_Current->second.BottomPos>=Objects_Current->second.Bottoms.size()) - { - if (Objects_Current->first==(int32u)-1) - { - //No more to parse - Objects_Current=Objects.end(); - Objects.clear(); - Finish(); - break; - } - - Objects_Current=Objects.find(Objects_Current->second.TopObject); - continue; - } - - Objects_Current=Objects.find(Objects_Current->second.Bottoms[Objects_Current->second.BottomPos]); - GoTo(Objects_Current->second.Offset); - break; - } -} - -//*************************************************************************** -// Elements -//*************************************************************************** - -//--------------------------------------------------------------------------- -void File_Pdf::xref() -{ - //Parsing - Element_Begin1("Cross-Reference Table"); - - Element_Begin1("Cross-Reference Section"); - - string FirstLine; - Skip_String(SizeOfLine(), "Object name"); - Element_Begin1("Cross-Reference SubSection"); - Get_String(SizeOfLine(), FirstLine, "Header"); - size_t FirstLine_Space=FirstLine.find(' '); - int32u Base=atoi((const char*)FirstLine.c_str()); - int32u Count=0; - if (FirstLine_Space!=string::npos) - Count=atoi((const char*)FirstLine.c_str()+FirstLine_Space+1); - - if (0x10000+20*Count>Buffer_Size && File_Offset+Buffer_Size<File_Size) - { - // We wait for more data - Buffer_Offset=0; - Element_Offset=0; - Element_DoNotShow(); - Element_End0(); - Element_End0(); - Element_End0(); - Element_WaitForMoreData(); - return; - } - - while (Element_Offset<Element_Size && (Buffer[Buffer_Offset+(size_t)Element_Offset]=='\r' || Buffer[Buffer_Offset+(size_t)Element_Offset]=='\n')) - Element_Offset++; - const int8u* Buffer_Temp=Buffer+Buffer_Offset+(size_t)Element_Offset+17; - for (int32u Pos=0; Pos<Count; ++Pos) - { - if (*Buffer_Temp=='n') - { - int32u Offset=(int32u)atoi((const char*)(Buffer_Temp-17)); - Objects[Base+Pos].Offset=Offset; - //Offsets[Offset]=Base+Pos; - Offsets.push_back(Offset); - } - Buffer_Temp+=20; - if (Pos>100) - Element_Offset+=20; - else - { - Skip_String(18, "Entry"); Param_Info1(Base+Pos); - Element_Offset+=2; //Skipping spaces at end and line return - } - } - Element_End0(); - - Element_End0(); - - Element_End0(); - - if (File_Offset+Buffer_Offset>Offsets_Max) - Offsets_Max=(int32u)(File_Offset+Buffer_Offset); -} - -//--------------------------------------------------------------------------- -void File_Pdf::trailer() -{ - Element_Begin1("Trailer"); - - //Parsing - int32u Prev=(int32u)-1; - string Key; - Ztring Value; - Skip_String(SizeOfLine(), "Object name"); - while (Element_Offset<Element_Size) - { - if (Get_Next(Key, Value)) - { - for (;;) - { - Get_Next(Key, Value); - if (Key.empty()) - break; - else if (Key=="Root") - { - int32u ObjectNumber=Value.To_int32u(); - Objects[ObjectNumber].Type=Type_Root; - Objects[ObjectNumber].TopObject=(int32u)-1; - Objects[(int32u)-1].Bottoms.push_back(ObjectNumber); - Param_Info1(__T("Document Catalog is at offset 0x"+Ztring().From_Number(Objects[ObjectNumber].Offset, 16))); - } - else if (Key=="Info") - { - int32u ObjectNumber=Value.To_int32u(); - Objects[ObjectNumber].Type=Type_Info; - Objects[ObjectNumber].TopObject=(int32u)-1; - Objects[(int32u)-1].Bottoms.push_back(ObjectNumber); - Param_Info1(__T("Info is at offset 0x"+Ztring().From_Number(Objects[ObjectNumber].Offset, 16))); - } - else if (Key=="Prev") - { - Prev=Value.To_int32u(); - Param_Info1(__T("Previous Cross-Reference Table is at offset 0x"+Ztring().From_Number(Prev, 16))); - } - } - - continue; - } - - if (Key.empty()) - break; - } - - Element_End0(); - - //Previous Cross-Reference Table - if (Prev!=(int32u)-1) - { - GoTo(Prev); - return; - } - - objects::iterator Object_Top=Objects.find((int32u)-1); - if (Offsets.empty() || Object_Top==Objects.end()) - { - Finish(); - return; - } - - sort(Offsets.begin(), Offsets.end()); - - //Offsets_Current=Offsets.end(); //No more used for the moment - Objects[(int32u)-1].BottomPos=0; - Objects_Current=Objects.find(Object_Top->second.Bottoms[0]); - GoTo(Objects_Current->second.Offset); - State=State_Parsing_object; -} - -//--------------------------------------------------------------------------- -void File_Pdf::startxref() -{ - //We need to find the exact begin - Buffer_Offset=Buffer_Size-1; - while (Buffer_Offset && (Buffer[Buffer_Offset]=='\r' || Buffer[Buffer_Offset]=='\n')) - Buffer_Offset--; - Buffer_Offset-=5; // "%%EOF" - while (Buffer_Offset && (Buffer[Buffer_Offset]=='\r' || Buffer[Buffer_Offset]=='\n')) - Buffer_Offset--; - while (Buffer_Offset && Buffer[Buffer_Offset]>='0' && Buffer[Buffer_Offset]<='9') // Value - Buffer_Offset--; - while (Buffer_Offset && (Buffer[Buffer_Offset]=='\r' || Buffer[Buffer_Offset]=='\n')) - Buffer_Offset--; - - Buffer_Offset-=8; - - //Parsing - Element_Begin1("Cross-Reference Table Offset"); - - string xrefOffsetS; - Skip_String(SizeOfLine(), "Object name"); - Get_String (SizeOfLine(), xrefOffsetS, "xref Offset"); - while (Buffer_Offset<Buffer_Size && (Buffer[Buffer_Offset]=='\r' || Buffer[Buffer_Offset]=='\n')) - ++Buffer_Offset; - int32u xref_Offset=atoi(xrefOffsetS.c_str()); - - Element_End0(); - - //Going to xref - if (xref_Offset>Offsets_Max) - Offsets_Max=xref_Offset; - GoTo (xref_Offset); - State=State_Parsing_xref; -} - -//--------------------------------------------------------------------------- -void File_Pdf::eof() -{ - if (File_Size!=(int64u)-1 && File_Offset+Buffer_Size<File_Size) - { - Element_WaitForMoreData(); - return; - } - - //We need to find the exact begin - Buffer_Offset=Buffer_Size-1; - while (Buffer_Offset && (Buffer[Buffer_Offset]=='\r' || Buffer[Buffer_Offset]=='\n')) - Buffer_Offset--; - - Buffer_Offset-=5; - - //Parsing - Element_Begin1("End Of File"); - - Skip_String(SizeOfLine(), "Object name"); - - Element_End0(); -} - -//--------------------------------------------------------------------------- -void File_Pdf::Object_Root() -{ - Element_Info1("Document Catalog"); - - //Parsing - string Key; - Ztring Value; - while (Element_Offset<Element_Size) - { - if (Get_Next(Key, Value)) - { - for (;;) - { - Get_Next(Key, Value); - if (Key.empty()) - break; - else if (Key=="Metadata") - { - int32u ObjectNumber=Value.To_int32u(); - Objects[ObjectNumber].Type=Type_Metadata; - Objects[ObjectNumber].TopObject=Objects_Current->first; - Objects[Objects_Current->first].Bottoms.push_back(ObjectNumber); - Param_Info1(__T("Metadata is at offset 0x"+Ztring().From_Number(Objects[ObjectNumber].Offset))); - } - } - - continue; - } - - if (Key.empty()) - break; - } -} - -//--------------------------------------------------------------------------- -void File_Pdf::Object_Info() -{ - Element_Info1("Info"); - - //Parsing - string Key; - Ztring Value; - while (Element_Offset<Element_Size) - { - if (Get_Next(Key, Value)) - { - for (;;) - { - Get_Next(Key, Value); - if (Key.empty()) - break; - } - - continue; - } - - if (Key.empty()) - break; - } -} - -//--------------------------------------------------------------------------- -void File_Pdf::Object_Metadata() -{ - Element_Info1("Metadata"); - - //Parsing - string Key; - Ztring Value; - int32u Length=0; - while (Element_Offset<Element_Size) - { - if (Get_Next(Key, Value)) - { - for (;;) - { - Get_Next(Key, Value); - if (Key.empty()) - break; - else if (Key=="Length") - { - Length=Value.To_int32u(); - } - } - - continue; - } - - if (Key.empty()) - break; - else if (Key=="stream") - { - //Removig end of lines - if (Element_Offset<Element_Size && Buffer[Buffer_Offset+(size_t)Element_Offset]=='\r') - Element_Offset++; - if (Element_Offset<Element_Size && Buffer[Buffer_Offset+(size_t)Element_Offset]=='\n') - Element_Offset++; - - File_Xmp MI; - Open_Buffer_Init(&MI, Length); - Open_Buffer_Continue(&MI, Buffer+Buffer_Offset+(size_t)Element_Offset, Length); - Skip_XX(Length, "Stream, Data"); - Open_Buffer_Finalize(&MI); - Merge(MI, Stream_General, 0, 0); - } - } -} - -//*************************************************************************** -// Helpers -//*************************************************************************** - -//--------------------------------------------------------------------------- -int64u File_Pdf::SizeOfLine() -{ - //while (Element_Offset<Element_Size && (Buffer[Buffer_Offset+(size_t)Element_Offset]=='\r' || Buffer[Buffer_Offset+(size_t)Element_Offset]=='\n' || Buffer[Buffer_Offset+(size_t)Element_Offset]=='<' || Buffer[Buffer_Offset+(size_t)Element_Offset]=='>')) - while (Element_Offset<Element_Size && (Buffer[Buffer_Offset+(size_t)Element_Offset]=='\r' || Buffer[Buffer_Offset+(size_t)Element_Offset]=='\n' || Buffer[Buffer_Offset+(size_t)Element_Offset]==' ')) - Element_Offset++; - size_t End=Buffer_Offset+(size_t)Element_Offset; - while (End<Buffer_Size && Buffer[End]!='\r' && Buffer[End]!='\n' && !(End+1<Buffer_Size && Buffer[End]=='<' && Buffer[End+1]=='<') && !(End+1<Buffer_Size && Buffer[End]=='>' && Buffer[End+1]=='>')) - End++; - return End-(Buffer_Offset+(size_t)Element_Offset); -} - -//--------------------------------------------------------------------------- -bool File_Pdf::Get_Next(string &Key, Ztring &Value) -{ - Key.clear(); - Value.clear(); - - string Line; - - //Removig end of lines - while (Element_Offset<Element_Size && (Buffer[Buffer_Offset+(size_t)Element_Offset]=='\r' || Buffer[Buffer_Offset+(size_t)Element_Offset]=='\n' || Buffer[Buffer_Offset+(size_t)Element_Offset]==' ')) - Element_Offset++; - - //End - if (Element_Offset>=Element_Size) - return true; - - //Testing Catalog - Peek_String (2, Line); - if (Line=="<<") - { - Element_Offset+=2; - Catalog_Level++; - return true; - } - else if (Line==">>") - { - Element_Offset+=2; - Catalog_Level--; - return true; - } - - //Getting a complete line - Peek_String (SizeOfLine(), Line); - - //Testing Catalog - size_t Catalog_End=Line.find(">>"); - if (Catalog_End!=String::npos) - Line.resize(Catalog_End); - - //Testing stream - if (Line=="stream") - { - Skip_String(Line.size(), "Stream, Header"); - Key=Line; - return false; - } - if (Line=="endstream") - { - Skip_String(Line.size(), "Stream, Footer"); - Key=Line; - return false; - } - - //Testing object - if (Line=="endobj") - { - Skip_String(Line.size(), "Footer"); - Key=Line; - return false; - } - - //Base - int64u Line_Base=Element_Offset; - - //Testing next key - size_t Line_End=0; - size_t Line_Begin=Line_End; - - // Key-Value - if (Line_Begin<Line.size() && Line[Line_Begin]=='/') - { - Line_End= Line_Begin+1; - size_t HasParenthesis=0; - size_t HasBracket=0; - size_t HasSpace=0; - size_t HasValue=0; - for (;;) - { - if (Line_End==Line.size()) - break; - - if (!HasParenthesis && !HasBracket && HasValue && Line[Line_End]=='<' && Line_End+1<Line.size() && Line[Line_End+1]=='<') - break; - if (!HasParenthesis && !HasBracket && HasValue && Line[Line_End]=='/') - break; - else if (!HasValue && Line[Line_End]=='/') - ++HasValue; - else if (!HasValue && HasSpace) - ++HasValue; - - if (Line[Line_End]==' ') - ++HasSpace; - - if (Line[Line_End]=='(') - ++HasParenthesis; - if (HasParenthesis && Line[Line_End]==')') - --HasParenthesis; - - if (Line[Line_End]=='[') - ++HasBracket; - if (HasBracket && Line[Line_End]==']') - --HasBracket; - - ++Line_End; - } - while(Line_End && Line[Line_End-1]==' ') - Line_End--; //Removing trailing spaces - - Element_Offset=Line_Base+Line_Begin; - string KeyValue; - Get_String(Line_End-Line_Begin, KeyValue, "Key-Value"); - - size_t Key_Max=KeyValue.find_first_of(" ("); - if (Key_Max==string::npos) - Key_Max=KeyValue.size(); - Key=KeyValue.substr(1, Key_Max-1); - size_t Value_Min=Key_Max; - while (Value_Min<KeyValue.size() && KeyValue[Value_Min]==' ') - ++Value_Min; - if (Value_Min<KeyValue.size() && KeyValue[Value_Min]=='(') - { - ++Value_Min; - size_t Value_Max=KeyValue.find(')', Value_Min); - if (Value_Max!=string::npos) - { - //TODO - Value.From_UTF8(KeyValue.c_str()+Value_Min, Value_Max-Value_Min); - } - else - Value.From_UTF8(KeyValue.c_str()+Value_Min); - } - else - Value.From_UTF8(KeyValue.c_str()+Value_Min); - return false; - } - - return false; -} - -} //NameSpace - -#endif //MEDIAINFO_PDF_YES |