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/*
WString.h - String library for Wiring & Arduino
...mostly rewritten by Paul Stoffregen...
Copyright (c) 2009-10 Hernando Barragan. All right reserved.
Copyright 2011, Paul Stoffregen, paul@pjrc.com
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_class_h
#define String_class_h
#ifdef __cplusplus
#include <stdlib.h>
#include <string.h>
#include <ctype.h>
#include <avr/pgmspace.h>
// When compiling programs with this class, the following gcc parameters
// dramatically increase performance and memory (RAM) efficiency, typically
// with little or no increase in code size.
// -felide-constructors
// -std=c++0x
// An inherited class for holding the result of a concatenation. These
// result objects are assumed to be writable by subsequent concatenations.
class StringSumHelper;
// The string class
class String
{
public:
// constructors
String(const char *cstr = "");
String(const String &str);
#ifdef __GXX_EXPERIMENTAL_CXX0X__
String(String &&rval);
String(StringSumHelper &&rval);
#endif
String(char c);
String(unsigned char c);
String(int, unsigned char base=10);
String(unsigned int, unsigned char base=10);
String(long, unsigned char base=10);
String(unsigned long, unsigned char base=10);
~String(void);
// memory management
unsigned char reserve(unsigned int size);
inline unsigned int length(void) const {return len;}
String & operator = (const String &rhs);
String & operator = (const char *cstr);
#ifdef __GXX_EXPERIMENTAL_CXX0X__
String & operator = (String &&rval);
String & operator = (StringSumHelper &&rval);
#endif
String & operator = (char c);
// concat
unsigned char concat(const String &str);
unsigned char concat(const char *cstr);
unsigned char concat(char c);
unsigned char concat(unsigned char c) {return concat((char)c);}
unsigned char concat(int num);
unsigned char concat(unsigned int num);
unsigned char concat(long num);
unsigned char concat(unsigned long num);
String & operator += (const String &rhs) {concat(rhs); return (*this);}
String & operator += (const char *cstr) {concat(cstr); return (*this);}
String & operator += (char c) {concat(c); return (*this);}
String & operator += (unsigned char c) {concat((char)c); return (*this);}
String & operator += (int num) {concat(num); return (*this);}
String & operator += (unsigned int num) {concat(num); return (*this);}
String & operator += (long num) {concat(num); return (*this);}
String & operator += (unsigned long num) {concat(num); return (*this);}
// concatenate
friend StringSumHelper & operator + (const StringSumHelper &lhs, const String &rhs);
friend StringSumHelper & operator + (const StringSumHelper &lhs, const char *cstr);
friend StringSumHelper & operator + (const StringSumHelper &lhs, char c);
friend StringSumHelper & operator + (const StringSumHelper &lhs, unsigned char c);
friend StringSumHelper & operator + (const StringSumHelper &lhs, int num);
friend StringSumHelper & operator + (const StringSumHelper &lhs, unsigned int num);
friend StringSumHelper & operator + (const StringSumHelper &lhs, long num);
friend StringSumHelper & operator + (const StringSumHelper &lhs, unsigned long num);
// comparison
operator bool() const;
int compareTo(const String &s) const;
unsigned char equals(const String &s) const;
unsigned char equals(const char *cstr) const;
unsigned char operator == (const String &rhs) const {return equals(rhs);}
unsigned char operator == (const char *cstr) const {return equals(cstr);}
unsigned char operator != (const String &rhs) const {return !equals(rhs);}
unsigned char operator != (const char *cstr) const {return !equals(cstr);}
unsigned char operator < (const String &rhs) const;
unsigned char operator > (const String &rhs) const;
unsigned char operator <= (const String &rhs) const;
unsigned char operator >= (const String &rhs) const;
unsigned char equalsIgnoreCase(const String &s) const;
unsigned char startsWith( const String &prefix) const;
unsigned char startsWith(const String &prefix, unsigned int offset) const;
unsigned char endsWith(const String &suffix) const;
// character acccess
char charAt(unsigned int index) const;
void setCharAt(unsigned int index, char c);
char operator [] (unsigned int index) const;
char& operator [] (unsigned int index);
void getBytes(unsigned char *buf, unsigned int bufsize, unsigned int index=0) const;
void toCharArray(char *buf, unsigned int bufsize, unsigned int index=0) const
{getBytes((unsigned char *)buf, bufsize, index);}
// search
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, int fromIndex ) const;
int lastIndexOf( const String &str ) const;
int lastIndexOf( const String &str, int fromIndex ) const;
String substring( unsigned int beginIndex ) const;
String substring( unsigned int beginIndex, unsigned int endIndex ) const;
// modification
void replace(char find, char replace);
void replace(const String& find, const String& replace);
void toLowerCase(void);
void toUpperCase(void);
void trim(void);
// parsing/conversion
long toInt(void) const;
protected:
char *buffer; // the actual char array
unsigned int capacity; // the array length minus one (for the '\0')
unsigned int len; // the String length (not counting the '\0')
unsigned char flags; // unused, for future features
protected:
void init(void);
void invalidate(void);
unsigned char changeBuffer(unsigned int maxStrLen);
unsigned char concat(const char *cstr, unsigned int length);
// copy and move
String & copy(const char *cstr, unsigned int length);
#ifdef __GXX_EXPERIMENTAL_CXX0X__
void move(String &rhs);
#endif
};
class StringSumHelper : public String
{
public:
StringSumHelper(const String &s) : String(s) {}
StringSumHelper(const char *p) : String(p) {}
StringSumHelper(char c) : String(c) {}
StringSumHelper(unsigned char c) : String(c) {}
StringSumHelper(int num) : String(num, 10) {}
StringSumHelper(unsigned int num) : String(num, 10) {}
StringSumHelper(long num) : String(num, 10) {}
StringSumHelper(unsigned long num) : String(num, 10) {}
};
inline StringSumHelper operator + (const String &lhs, const String &rhs)
{ return StringSumHelper(lhs) + rhs; }
inline StringSumHelper operator + (const String &lhs, const char *cstr)
{ return StringSumHelper(lhs) + cstr; }
inline StringSumHelper operator + (const String &lhs, char c)
{ return StringSumHelper(lhs) + c; }
inline StringSumHelper operator + (const String &lhs, unsigned char c)
{ return StringSumHelper(lhs) + c; }
inline StringSumHelper operator + (const String &lhs, int num)
{ return StringSumHelper(lhs) + num; }
inline StringSumHelper operator + (const String &lhs, unsigned int num)
{ return StringSumHelper(lhs) + num; }
inline StringSumHelper operator + (const String &lhs, long num)
{ return StringSumHelper(lhs) + num; }
inline StringSumHelper operator + (const String &lhs, unsigned long num)
{ return StringSumHelper(lhs) + num; }
inline StringSumHelper operator + (const char *cstr, const String &rhs)
{ return StringSumHelper(cstr) + rhs; }
inline StringSumHelper operator + (char c, const String &rhs)
{ return StringSumHelper(c) + rhs; }
inline StringSumHelper operator + (unsigned char c, const String &rhs)
{ return StringSumHelper(c) + rhs; }
inline StringSumHelper operator + (int num, const String &rhs)
{ return StringSumHelper(num) + rhs; }
inline StringSumHelper operator + (unsigned int num, const String &rhs)
{ return StringSumHelper(num) + rhs; }
inline StringSumHelper operator + (long num, const String &rhs)
{ return StringSumHelper(num) + rhs; }
inline StringSumHelper operator + (unsigned long num, const String &rhs)
{ return StringSumHelper(num) + rhs; }
#endif // __cplusplus
#endif // String_class_h
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