Merge pull request #3 from saurabhb17/master

secondary files

1 files changed, 333 insertions, 0 deletions

diff --git a/lib_dxf/intern/dxfreader.cpp b/lib_dxf/intern/dxfreader.cpp
new file mode 100644
index 0000000..5ca2df0
--- /dev/null
+++ b/lib_dxf/intern/dxfreader.cpp
@@ -0,0 +1,333 @@
+/******************************************************************************
+**  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;
+}