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/*
WString.h - String library for Wiring & Arduino
Copyright (c) 2009-10 Hernando Barragan. All right reserved.
Changes for version 1.0 by Xiaoyang Feng
This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
This library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with this library; if not, write to the Free Software
Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
*/
#ifndef String_h
#define String_h
//#include "WProgram.h"
#include <stdlib.h>
#include <string.h>
#include <ctype.h>
class String
{
public:
// constructors
String( const char* value = "" );
String( const String &value );
explicit String( const char );
explicit String( const unsigned char );
explicit String( const int, const int base=10);
explicit String( const unsigned int, const int base=10 );//negative sign only works on decimal
explicit String( const long, const int base=10 );
explicit String( const unsigned long, const int base=10 );//need add function to detect if number is bigger than the limit
~String() { free(_buffer); _length = _capacity = 0;} //added _length = _capacity = 0;
// operators
const String & operator = ( const String &rhs );
const String & operator +=( const String &rhs );
const String & operator +=( const char );
int operator ==( const String &rhs ) const;
int operator !=( const String &rhs ) const;
//is this useful?
int operator < ( const String &rhs ) const;
int operator > ( const String &rhs ) const;
int operator <=( const String &rhs ) const;
int operator >=( const String &rhs ) const;
friend String operator + ( String lhs, const String &rhs );
char operator []( unsigned int index ) const;
char& operator []( unsigned int index );
// general methods
char charAt( unsigned int index ) const;
void setCharAt(unsigned int index, const char ch);
boolean startsWith( const String &prefix ) const;
boolean startsWith( const String &prefix, unsigned int toffset ) const;
boolean endsWith( const String &suffix ) const;
boolean contains( const String &str ) const; //added
boolean equals( const String &str ) const;
boolean equalsIgnoreCase( const String &str ) const;
String trim( ) const;
String toLowerCase( ) const;
String toUpperCase( ) const;
String replace( char oldChar, char newChar );
String replace( const String& match, const String& replace );
String substring( unsigned int beginIndex ) const;
String substring( unsigned int beginIndex, unsigned int endIndex ) const;
int compareTo( const String &str ) const;
int compareTo( const char* str ) const; //added
int indexOf( char ch ) const;
int indexOf( char ch, unsigned int fromIndex ) const;
int indexOf( const String &str ) const;
int indexOf( const String &str, unsigned int fromIndex ) const;
int lastIndexOf( char ch ) const;
int lastIndexOf( char ch, unsigned int fromIndex ) const; //from right to left?
int lastIndexOf( const String &str ) const;
int lastIndexOf( const String &str, unsigned int fromIndex ) const;
const unsigned int length( ) const { return _length; }
const byte *getBytes() const { return (byte*)_buffer; }
const char* toCharArray() const { return _buffer; }
//version checking
String version(void); // the version number
protected:
char *_buffer; // the actual char array
unsigned int _capacity; // the array length minus one (for the '\0')
unsigned int _length; // the String length (not counting the '\0')
void getBuffer(unsigned int maxStrLen);
//void doubleBuffer( );
private:
};
// allocate buffer space
inline void String::getBuffer(unsigned int maxStrLen)
{
_capacity = maxStrLen;
_buffer = (char *) malloc(_capacity + 1);
if(_buffer == NULL){ //added for memory alloc error
_length = _capacity = 0;
}
}
/* used only once, really not effcient
// double the buffer size
inline void String::doubleBuffer( )
{
char *temp = _buffer;
getBuffer( ++_capacity * 2 );
strcpy( _buffer, temp );
free(temp);
}
*/
inline String operator+( String lhs, const String &rhs )
{
return lhs += rhs;
}
#endif
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