kicad/lib_dxf/intern/dxfreader.cpp

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/******************************************************************************
** libDXFrw - Library to read/write DXF files (ascii & binary) **
** **
** Copyright (C) 2011 Rallaz, rallazz@gmail.com **
** **
** This library is free software, licensed 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. **
** You should have received a copy of the GNU General Public License **
** along with this program. If not, see <http://www.gnu.org/licenses/>. **
******************************************************************************/
#include <stdlib.h>
#include <fstream>
#include <string>
#include <sstream>
#include "dxfreader.h"
#include "drw_textcodec.h"
#ifdef DRW_DBG
#include <iostream> // for debug
#define DBG( a ) std::cerr << a
#else
#define DBG( a )
#endif
bool dxfReader::readRec( int* codeData, bool skip )
{
// std::string text;
int code;
#ifdef DRW_DBG
count = count + 2; // DBG
/* if (count > 10250)
* DBG("line 10256");*/
#endif
if( !readCode( &code ) )
return false;
*codeData = code;
if( code < 10 )
readString();
else if( code < 60 )
readDouble();
else if( code < 80 )
readInt();
else if( code > 89 && code < 100 ) // TODO this is an int 32b
readInt32();
else if( code == 100 || code == 102 || code == 105 )
readString();
else if( code > 109 && code < 150 ) // skip not used at the v2012
readDouble();
else if( code > 159 && code < 170 ) // skip not used at the v2012
readInt64();
else if( code < 180 )
readInt();
else if( code > 209 && code < 240 ) // skip not used at the v2012
readDouble();
else if( code > 269 && code < 290 ) // skip not used at the v2012
readInt();
else if( code < 300 ) // TODO this is a boolean indicator, int in Binary?
readBool();
else if( code < 370 )
readString();
else if( code < 390 )
readInt();
else if( code < 400 )
readString();
else if( code < 410 )
readInt();
else if( code < 420 )
readString();
else if( code < 430 ) // TODO this is an int 32b
readInt32();
else if( code < 440 )
readString();
else if( code < 450 ) // TODO this is an int 32b
readInt32();
else if( code < 460 ) // TODO this is long??
readInt();
else if( code < 470 ) // TODO this is a floating point double precision??
readDouble();
else if( code < 481 )
readString();
else if( code > 998 && code < 1009 ) // skip not used at the v2012
readString();
else if( code < 1060 ) // TODO this is a floating point double precision??
readDouble();
else if( code < 1071 )
readInt();
else if( code == 1071 ) // TODO this is an int 32b
readInt32();
else if( skip )
// skip safely this dxf entry ( ok for ascii dxf)
readString();
else
// break in binary files because the conduct is unpredictable
return false;
return filestr->good();
}
int dxfReader::getHandleString()
{
int res;
#if defined(__APPLE__)
int Succeeded = sscanf( strData.c_str(), "%x", &res );
if( !Succeeded || Succeeded == EOF )
res = 0;
#else
std::istringstream Convert( strData );
if( !(Convert >> std::hex >> res) )
res = 0;
#endif
return res;
}
bool dxfReaderBinary::readCode( int* code )
{
unsigned short* int16p;
char buffer[2];
filestr->read( buffer, 2 );
int16p = (unsigned short*) buffer;
// exist a 32bits int (code 90) with 2 bytes???
if( (*code == 90) && (*int16p>2000) )
{
DBG( *code ); DBG( " de 16bits\n" );
filestr->seekg( -4, std::ios_base::cur );
filestr->read( buffer, 2 );
int16p = (unsigned short*) buffer;
}
*code = *int16p;
DBG( *code ); DBG( "\n" );
return filestr->good();
}
bool dxfReaderBinary::readString()
{
std::getline( *filestr, strData, '\0' );
DBG( strData ); DBG( "\n" );
return filestr->good();
}
bool dxfReaderBinary::readString( std::string* text )
{
std::getline( *filestr, *text, '\0' );
DBG( *text ); DBG( "\n" );
return filestr->good();
}
bool dxfReaderBinary::readInt()
{
char buffer[2];
filestr->read( buffer, 2 );
intData = (int) ( (buffer[1] << 8) | buffer[0] );
DBG( intData ); DBG( "\n" );
return filestr->good();
}
bool dxfReaderBinary::readInt32()
{
unsigned int* int32p;
char buffer[4];
filestr->read( buffer, 4 );
int32p = (unsigned int*) buffer;
intData = *int32p;
DBG( intData ); DBG( "\n" );
return filestr->good();
}
bool dxfReaderBinary::readInt64()
{
unsigned long long int* int64p; // 64 bits integer pointer
char buffer[8];
filestr->read( buffer, 8 );
int64p = (unsigned long long int*) buffer;
int64 = *int64p;
DBG( int64 ); DBG( " int64\n" );
return filestr->good();
}
bool dxfReaderBinary::readDouble()
{
double* result;
char buffer[8];
filestr->read( buffer, 8 );
result = (double*) buffer;
doubleData = *result;
DBG( doubleData ); DBG( "\n" );
return filestr->good();
}
// saved as int or add a bool member??
bool dxfReaderBinary::readBool()
{
char buffer[1];
filestr->read( buffer, 1 );
intData = (int) (buffer[0]);
DBG( intData ); DBG( "\n" );
return filestr->good();
}
bool dxfReaderAscii::readCode( int* code )
{
std::string text;
std::getline( *filestr, text );
*code = atoi( text.c_str() );
DBG( *code ); DBG( "\n" );
return filestr->good();
}
bool dxfReaderAscii::readString( std::string* text )
{
std::getline( *filestr, *text );
if( !text->empty() && text->at( text->size() - 1 ) == '\r' )
text->erase( text->size() - 1 );
return filestr->good();
}
bool dxfReaderAscii::readString()
{
std::getline( *filestr, strData );
if( !strData.empty() && strData.at( strData.size() - 1 ) == '\r' )
strData.erase( strData.size() - 1 );
DBG( strData ); DBG( "\n" );
return filestr->good();
}
bool dxfReaderAscii::readInt()
{
std::string text;
if( readString( &text ) )
{
intData = atoi( text.c_str() );
DBG( intData ); DBG( "\n" );
return true;
}
else
return false;
}
bool dxfReaderAscii::readInt32()
{
return readInt();
}
bool dxfReaderAscii::readInt64()
{
return readInt();
}
bool dxfReaderAscii::readDouble()
{
std::string text;
if( readString( &text ) )
{
#if defined(__APPLE__)
int succeeded = sscanf( &(text[0]), "%lg", &doubleData );
if( succeeded != 1 )
{
DBG( "dxfReaderAscii::readDouble(): reading double error: " );
DBG( text );
DBG( '\n' );
}
#else
std::istringstream sd( text );
sd >> doubleData;
DBG( doubleData ); DBG( '\n' );
#endif
return true;
}
else
return false;
}
// saved as int or add a bool member??
bool dxfReaderAscii::readBool()
{
std::string text;
if( readString( &text ) )
{
intData = atoi( text.c_str() );
DBG( intData ); DBG( "\n" );
return true;
}
else
return false;
}