LineInformation.h

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#include <string.h>
#include <ctype.h>

class LineInformation{
        
public:
        
        enum LINE_TYPE { EMPTY_LINE, DIRTY_LINE, HEADER_LINE, DATA_LINE, };
        
private:
        
        int _length;
        int _tabCount;
        // Note that this is not "const" so we can add null terminators
        // in places when we need to (using getMalleableLine() )
        char *_beginning;
        LINE_TYPE _type;
        
        void _determineLength( void ){ _length=strlen(_beginning); }
        void _determineTabCount( void ){ for(const char *b=_beginning;*b;b++) if(*b=='\t') _tabCount++; }
        void _determineIfDirty( void ) { for(const char *b=_beginning;*b;b++) if(!isspace(*b)) _type=DIRTY_LINE; }
        
public:
        
        // getters:
        int getLength( void ){ return _length; }
        int getTabCount( void ){ return _tabCount; }
        // This is the read-only version:
        const char *getLine( void ){ return (const char *) _beginning; }
        // Use this when mucking around with (changing) the line:
        char *getMalleableLine( void ){ return _beginning; }
        // This is actually one past the end, on the null terminator:
        const char *getLineEnd( void ){ return _beginning + _length; }
        LINE_TYPE getType( void ){ return _type; }
        // setters:
        void setBeginning( char *beginning ){ 
                _beginning=beginning; 
                _determineLength(); 
                _determineTabCount(); 
                _determineIfDirty();
        }
        void setType( LINE_TYPE type ){ _type=type; }
        
        // Constructor:
        LineInformation(){
                
                _length=0;
                _tabCount=0;
                _beginning=NULL;
                _type=EMPTY_LINE;
                
        }
        
};

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