c3dsparser.h

#ifndef C3DSPARSER_H
#define C3DSPARSER_H
#include <stdint.h>
#include <string>
#include <stdio.h>

using namespace std;

typedef struct __attribute__ ((__packed__)) chunkHeader {
    unsigned short chunkId;
    unsigned int length;
    long int offset;
} chunkHeader;

class C3dsParser {
public:
    C3dsParser(string filename);
    ~C3dsParser(void);

    typedef uint16_t index;
    typedef struct { uint8_t r,g,b; } color;
    typedef struct { color diffuse,specular; } material;
    typedef struct { index a,b,c; } face;

    void reset();

    /* ChunkID	   2 bytes
     * ChunkLength     4 bytes
     * 	Data 	   m bytes
     * 	Sub chunks n bytes
     */

    // Read and skip past header 6 bytes
    void  enterChunk(void);
    // Skip to header of next chunk ( n+m-6 )
    void skipChunk(void);
    unsigned short getChunkId(void);
    unsigned int getChunkLength(void);
    long int getChunkOffset(void);

    // Skip ahead past null-byte terminating string
    void skipStrData(void);

    // Determine length of string at current offset
    unsigned int getStrDataLength(void);

    // Get strData and skip past
    char*  extractStrData(void);

    bool loadFile(string filename);
    bool eof(void);

    inline void skip(long int skip){
        fseek(m_file, skip, SEEK_CUR);
    }

    inline unsigned int extractCount(){
        uint16_t ret;
        fread(&ret, sizeof(ret), 1, m_file);
        return ret;
    }

    template <typename T> T* extractArray( unsigned int count, unsigned int tailSkip = 0 ){
        T* ret = new T[count];
        if ( tailSkip == 0 ){
            fread(ret, sizeof(T), count, m_file);
        }
        else {
            for (unsigned int i=0; i<count; i++ ){
                fread(&ret[i], sizeof(T), 1, m_file);
                skip(tailSkip);
            }
        }
        return ret;
    }

    template <typename T> T extractValue(){
        T ret;
        fread(&ret, sizeof(T), 1, m_file);
        return ret;
    }

private:
    chunkHeader m_currentHeader;
    FILE *m_file;
    long int m_fileLength;
};

#endif//C3DSPARSER_H