stringbuilder.h

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#pragma once
 
/*+
________________________________________________________________________
 
 (C) dGB Beheer B.V.; (LICENSE) http://opendtect.org/OpendTect_license.txt
 Author:        Bert
 Date:          May 2019
________________________________________________________________________
 
-*/
 
#include "basicmod.h"
#include "bufstring.h"
 
mExpClass(Basic) StringBuilder
{
public:
 
    typedef int         size_type;
 
                        StringBuilder()             {}
                        StringBuilder( const StringBuilder& oth )
                                                    { *this = oth; }
                        StringBuilder(const char*);
    virtual             ~StringBuilder()            { delete [] buf_; }
 
    StringBuilder&      operator=(const StringBuilder&);
    StringBuilder&      operator=( const char* s )  { return set( s ); }
 
    const char*         str() const                 { return buf_; }
    const char*         result() const              { return buf_ ? buf_ : ""; }
    char*               getCStr(int minlen=-1);
 
    bool                operator==(const StringBuilder&) const;
    bool                operator!=(const StringBuilder&) const;
 
    bool                isEmpty() const             { return !buf_; }
    StringBuilder&      setEmpty();
    StringBuilder&      set(const char*);
    template <class T>
    StringBuilder&      set(const T&);
 
    StringBuilder&      add(const char*);
    StringBuilder&      add(char,size_type nr=1);
    StringBuilder&      add(const QString&);
    template <class T>  inline
    StringBuilder&      add( const T& t )       { return add( toString(t) ); }
 
    StringBuilder&      addSpace( size_type nr=1 )      { return add(' ',nr); }
    StringBuilder&      addTab( size_type nr=1 )        { return add('\t',nr); }
    StringBuilder&      addNewLine( size_type nr=1 )    { return add('\n',nr); }
 
protected:
 
    char*               buf_            = nullptr;
    size_type           bufsz_          = 0;
    size_type           curpos_         = 0;
 
    bool                setBufSz(size_type,bool cp_old);
 
};