kicad/common/plugins/altium/altium_parser.h

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/*
* This program source code file is part of KiCad, a free EDA CAD application.
*
* Copyright (C) 2019-2020 Thomas Pointhuber <thomas.pointhuber@gmx.at>
* Copyright (C) 2020 KiCad Developers, see AUTHORS.txt for contributors.
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version 2
* of the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, you may find one here:
* http://www.gnu.org/licenses/old-licenses/gpl-2.0.html
* or you may search the http://www.gnu.org website for the version 2 license,
* or you may write to the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA
*/
#ifndef ALTIUM_PARSER_H
#define ALTIUM_PARSER_H
#include <map>
#include <memory>
#include <wx/gdicmn.h>
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#include <math/vector2d.h>
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#include <vector>
namespace CFB
{
class CompoundFileReader;
struct COMPOUND_FILE_ENTRY;
} // namespace CFB
class ALTIUM_COMPOUND_FILE
{
public:
/**
* Open a CFB file. Constructor might throw an IO_ERROR.
*
* @param aFilePath path to file to open
*/
ALTIUM_COMPOUND_FILE( const wxString& aFilePath );
ALTIUM_COMPOUND_FILE( const ALTIUM_COMPOUND_FILE& temp_obj ) = delete;
ALTIUM_COMPOUND_FILE& operator=( const ALTIUM_COMPOUND_FILE& temp_obj ) = delete;
~ALTIUM_COMPOUND_FILE() = default;
const CFB::CompoundFileReader& GetCompoundFileReader() const { return *m_reader; }
const CFB::COMPOUND_FILE_ENTRY* FindStream( const std::string& aStreamPath ) const;
private:
std::unique_ptr<CFB::CompoundFileReader> m_reader;
std::vector<char> m_buffer;
};
class ALTIUM_PARSER
{
public:
ALTIUM_PARSER( const ALTIUM_COMPOUND_FILE& aFile, const CFB::COMPOUND_FILE_ENTRY* aEntry );
ALTIUM_PARSER( std::unique_ptr<char[]>& aContent, size_t aSize );
~ALTIUM_PARSER() = default;
template <typename Type>
Type Read()
{
const size_t remainingBytes = GetRemainingBytes();
if( remainingBytes >= sizeof( Type ) )
{
Type val = *(Type*) ( m_pos );
m_pos += sizeof( Type );
return val;
}
else
{
m_pos += remainingBytes; // Ensure remaining bytes are zero
m_error = true;
return 0;
}
}
template <typename Type>
Type Peek()
{
char* const oldPos = m_pos;
const bool oldError = m_error;
Type result = Read<Type>();
m_pos = oldPos;
m_error = oldError;
return result;
}
wxString ReadWxString()
{
uint8_t len = Read<uint8_t>();
if( GetRemainingBytes() >= len )
{
// TODO: Identify where the actual code page is stored. For now, this default code page
// has limited impact, because recent Altium files come with a UTF16 string table
wxString val = wxString( m_pos, wxConvISO8859_1, len );
m_pos += len;
return val;
}
else
{
m_error = true;
return wxString( "" );
}
}
std::map<uint32_t, wxString> ReadWideStringTable()
{
std::map<uint32_t, wxString> table;
size_t remaining = GetRemainingBytes();
while( remaining >= 8 )
{
uint32_t index = Read<uint32_t>();
uint32_t length = Read<uint32_t>();
wxString str;
remaining -= 8;
if( length <= 2 )
length = 0; // for empty strings, not even the null bytes are present
else
{
if( length > remaining )
break;
str = wxString( m_pos, wxMBConvUTF16LE(), length - 2 );
}
table.emplace( index, str );
m_pos += length;
remaining -= length;
}
return table;
}
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std::vector<char> ReadVector( size_t aSize )
{
if( aSize > GetRemainingBytes() )
{
m_error = true;
return {};
}
else
{
std::vector<char> data( m_pos, m_pos + aSize );
m_pos += aSize;
return data;
}
}
int32_t ReadKicadUnit()
{
return ConvertToKicadUnit( Read<int32_t>() );
}
int32_t ReadKicadUnitX()
{
return ReadKicadUnit();
}
int32_t ReadKicadUnitY()
{
return -ReadKicadUnit();
}
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VECTOR2I ReadVector2I()
{
int32_t x = ReadKicadUnitX();
int32_t y = ReadKicadUnitY();
return { x, y };
}
wxSize ReadWxSize()
{
int32_t x = ReadKicadUnit();
int32_t y = ReadKicadUnit();
return { x, y };
}
size_t ReadAndSetSubrecordLength()
{
uint32_t length = Read<uint32_t>();
m_subrecord_end = m_pos + length;
return length;
}
std::map<wxString, wxString> ReadProperties();
static int32_t ConvertToKicadUnit( const double aValue );
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static int ReadInt( const std::map<wxString, wxString>& aProps,
const wxString& aKey, int aDefault );
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static double ReadDouble( const std::map<wxString, wxString>& aProps,
const wxString& aKey, double aDefault );
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static bool ReadBool( const std::map<wxString, wxString>& aProps,
const wxString& aKey, bool aDefault );
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static int32_t ReadKicadUnit( const std::map<wxString, wxString>& aProps,
const wxString& aKey, const wxString& aDefault );
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static wxString ReadString( const std::map<wxString, wxString>& aProps,
const wxString& aKey, const wxString& aDefault );
void Skip( size_t aLength )
{
if( GetRemainingBytes() >= aLength )
{
m_pos += aLength;
}
else
{
m_error = true;
}
}
void SkipSubrecord()
{
if( m_subrecord_end == nullptr || m_subrecord_end < m_pos )
{
m_error = true;
}
else
{
m_pos = m_subrecord_end;
}
};
size_t GetRemainingBytes() const
{
return m_pos == nullptr ? 0 : m_size - ( m_pos - m_content.get() );
}
size_t GetRemainingSubrecordBytes() const
{
return m_pos == nullptr || m_subrecord_end == nullptr || m_subrecord_end <= m_pos ?
0 :
m_subrecord_end - m_pos;
};
bool HasParsingError()
{
return m_error;
}
private:
std::unique_ptr<char[]> m_content;
size_t m_size;
char* m_pos; // current read pointer
char* m_subrecord_end; // pointer which points to next subrecord start
bool m_error;
};
#endif //ALTIUM_PARSER_H