295 lines
7.7 KiB
C++
295 lines
7.7 KiB
C++
/*
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* This program source code file is part of KiCad, a free EDA CAD application.
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*
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* Copyright (C) 2019-2020 Thomas Pointhuber <thomas.pointhuber@gmx.at>
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* Copyright (C) 2020 KiCad Developers, see AUTHORS.txt for contributors.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, you may find one here:
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* http://www.gnu.org/licenses/old-licenses/gpl-2.0.html
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* or you may search the http://www.gnu.org website for the version 2 license,
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* or you may write to the Free Software Foundation, Inc.,
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* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA
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*/
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#ifndef ALTIUM_PARSER_H
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#define ALTIUM_PARSER_H
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#include <map>
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#include <memory>
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#include <numeric>
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#include <wx/gdicmn.h>
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#include <math/vector2d.h>
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#include <vector>
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namespace CFB
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{
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class CompoundFileReader;
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struct COMPOUND_FILE_ENTRY;
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} // namespace CFB
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/**
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* Helper for debug logging (vector -> string)
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* @param aVectorPath path
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* @return path formatted as string
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*/
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std::string FormatPath( const std::vector<std::string>& aVectorPath );
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class ALTIUM_COMPOUND_FILE
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{
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public:
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/**
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* Open a CFB file. Constructor might throw an IO_ERROR.
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*
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* @param aFilePath path to file to open
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*/
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ALTIUM_COMPOUND_FILE( const wxString& aFilePath );
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ALTIUM_COMPOUND_FILE( const ALTIUM_COMPOUND_FILE& temp_obj ) = delete;
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ALTIUM_COMPOUND_FILE& operator=( const ALTIUM_COMPOUND_FILE& temp_obj ) = delete;
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~ALTIUM_COMPOUND_FILE() = default;
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const CFB::CompoundFileReader& GetCompoundFileReader() const { return *m_reader; }
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const CFB::COMPOUND_FILE_ENTRY* FindStream( const std::vector<std::string>& aStreamPath ) const;
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private:
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std::unique_ptr<CFB::CompoundFileReader> m_reader;
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std::vector<char> m_buffer;
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};
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class ALTIUM_PARSER
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{
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public:
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ALTIUM_PARSER( const ALTIUM_COMPOUND_FILE& aFile, const CFB::COMPOUND_FILE_ENTRY* aEntry );
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ALTIUM_PARSER( std::unique_ptr<char[]>& aContent, size_t aSize );
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~ALTIUM_PARSER() = default;
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template <typename Type>
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Type Read()
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{
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const size_t remainingBytes = GetRemainingBytes();
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if( remainingBytes >= sizeof( Type ) )
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{
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Type val = *(Type*) ( m_pos );
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m_pos += sizeof( Type );
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return val;
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}
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else
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{
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m_pos += remainingBytes; // Ensure remaining bytes are zero
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m_error = true;
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return 0;
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}
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}
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template <typename Type>
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Type Peek()
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{
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char* const oldPos = m_pos;
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const bool oldError = m_error;
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Type result = Read<Type>();
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m_pos = oldPos;
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m_error = oldError;
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return result;
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}
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wxString ReadWxString()
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{
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uint8_t len = Read<uint8_t>();
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if( GetRemainingBytes() >= len )
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{
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// TODO: Identify where the actual code page is stored. For now, this default code page
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// has limited impact, because recent Altium files come with a UTF16 string table
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wxString val = wxString( m_pos, wxConvISO8859_1, len );
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m_pos += len;
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return val;
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}
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else
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{
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m_error = true;
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return wxString( "" );
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}
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}
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std::map<uint32_t, wxString> ReadWideStringTable()
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{
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std::map<uint32_t, wxString> table;
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size_t remaining = GetRemainingBytes();
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while( remaining >= 8 )
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{
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uint32_t index = Read<uint32_t>();
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uint32_t length = Read<uint32_t>();
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wxString str;
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remaining -= 8;
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if( length <= 2 )
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length = 0; // for empty strings, not even the null bytes are present
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else
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{
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if( length > remaining )
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break;
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str = wxString( m_pos, wxMBConvUTF16LE(), length - 2 );
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}
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table.emplace( index, str );
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m_pos += length;
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remaining -= length;
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}
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return table;
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}
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std::vector<char> ReadVector( size_t aSize )
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{
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if( aSize > GetRemainingBytes() )
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{
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m_error = true;
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return {};
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}
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else
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{
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std::vector<char> data( m_pos, m_pos + aSize );
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m_pos += aSize;
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return data;
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}
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}
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int ReadBytes( char* aOut, size_t aSize )
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{
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if( aSize > GetRemainingBytes() )
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{
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m_error = true;
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return 0;
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}
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else
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{
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memcpy( aOut, m_pos, aSize );
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m_pos += aSize;
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return aSize;
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}
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}
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int32_t ReadKicadUnit()
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{
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return ConvertToKicadUnit( Read<int32_t>() );
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}
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int32_t ReadKicadUnitX()
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{
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return ReadKicadUnit();
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}
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int32_t ReadKicadUnitY()
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{
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return -ReadKicadUnit();
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}
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VECTOR2I ReadVector2IPos()
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{
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int32_t x = ReadKicadUnitX();
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int32_t y = ReadKicadUnitY();
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return { x, y };
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}
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VECTOR2I ReadVector2ISize()
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{
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int32_t x = ReadKicadUnit();
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int32_t y = ReadKicadUnit();
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return { x, y };
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}
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size_t ReadAndSetSubrecordLength()
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{
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uint32_t length = Read<uint32_t>();
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m_subrecord_end = m_pos + length;
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return length;
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}
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std::map<wxString, wxString> ReadProperties();
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static int32_t ConvertToKicadUnit( const double aValue );
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static int ReadInt( const std::map<wxString, wxString>& aProps,
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const wxString& aKey, int aDefault );
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static double ReadDouble( const std::map<wxString, wxString>& aProps,
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const wxString& aKey, double aDefault );
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static bool ReadBool( const std::map<wxString, wxString>& aProps,
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const wxString& aKey, bool aDefault );
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static int32_t ReadKicadUnit( const std::map<wxString, wxString>& aProps,
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const wxString& aKey, const wxString& aDefault );
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static wxString ReadString( const std::map<wxString, wxString>& aProps,
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const wxString& aKey, const wxString& aDefault );
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void Skip( size_t aLength )
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{
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if( GetRemainingBytes() >= aLength )
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{
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m_pos += aLength;
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}
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else
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{
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m_error = true;
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}
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}
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void SkipSubrecord()
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{
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if( m_subrecord_end == nullptr || m_subrecord_end < m_pos )
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{
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m_error = true;
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}
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else
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{
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m_pos = m_subrecord_end;
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}
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};
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size_t GetRemainingBytes() const
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{
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return m_pos == nullptr ? 0 : m_size - ( m_pos - m_content.get() );
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}
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size_t GetRemainingSubrecordBytes() const
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{
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return m_pos == nullptr || m_subrecord_end == nullptr || m_subrecord_end <= m_pos ?
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0 :
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m_subrecord_end - m_pos;
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};
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bool HasParsingError()
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{
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return m_error;
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}
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private:
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std::unique_ptr<char[]> m_content;
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size_t m_size;
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char* m_pos; // current read pointer
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char* m_subrecord_end; // pointer which points to next subrecord start
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bool m_error;
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};
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#endif //ALTIUM_PARSER_H
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