diff options
Diffstat (limited to 'cores/arduino/WString.h')
| -rw-r--r-- | cores/arduino/WString.h | 255 |
1 files changed, 81 insertions, 174 deletions
diff --git a/cores/arduino/WString.h b/cores/arduino/WString.h index d76d2a3..56faf9a 100644 --- a/cores/arduino/WString.h +++ b/cores/arduino/WString.h @@ -1,8 +1,6 @@ /* 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 @@ -19,187 +17,96 @@ Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA */ -#ifndef String_class_h -#define String_class_h -#ifdef __cplusplus +#ifndef String_h +#define String_h +//#include "WProgram.h" #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 - -class __FlashStringHelper; -#define F(string_literal) (reinterpret_cast<__FlashStringHelper *>(PSTR(string_literal))) - -// 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 { - // use a function pointer to allow for "if (s)" without the - // complications of an operator bool(). for more information, see: - // http://www.artima.com/cppsource/safebool.html - typedef void (String::*StringIfHelperType)() const; - void StringIfHelper() const {} - -public: - // constructors - // creates a copy of the initial value. - // if the initial value is null or invalid, or if memory allocation - // fails, the string will be marked as invalid (i.e. "if (s)" will - // be false). - String(const char *cstr = ""); - String(const String &str); - #ifdef __GXX_EXPERIMENTAL_CXX0X__ - String(String &&rval); - String(StringSumHelper &&rval); - #endif - explicit String(char c); - explicit String(unsigned char, unsigned char base=10); - explicit String(int, unsigned char base=10); - explicit String(unsigned int, unsigned char base=10); - explicit String(long, unsigned char base=10); - explicit String(unsigned long, unsigned char base=10); - ~String(void); - - // memory management - // return true on success, false on failure (in which case, the string - // is left unchanged). reserve(0), if successful, will validate an - // invalid string (i.e., "if (s)" will be true afterwards) - unsigned char reserve(unsigned int size); - inline unsigned int length(void) const {return len;} - - // creates a copy of the assigned value. if the value is null or - // invalid, or if the memory allocation fails, the string will be - // marked as invalid ("if (s)" will be false). - String & operator = (const String &rhs); - String & operator = (const char *cstr); - #ifdef __GXX_EXPERIMENTAL_CXX0X__ - String & operator = (String &&rval); - String & operator = (StringSumHelper &&rval); - #endif - - // concatenate (works w/ built-in types) - - // returns true on success, false on failure (in which case, the string - // is left unchanged). if the argument is null or invalid, the - // concatenation is considered unsucessful. - unsigned char concat(const String &str); - unsigned char concat(const char *cstr); - unsigned char concat(char c); - unsigned char concat(unsigned char c); - unsigned char concat(int num); - unsigned char concat(unsigned int num); - unsigned char concat(long num); - unsigned char concat(unsigned long num); - - // if there's not enough memory for the concatenated value, the string - // will be left unchanged (but this isn't signalled in any way) - 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 num) {concat(num); 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);} - - 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 num); - 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 (only works w/ Strings and "strings") - operator StringIfHelperType() const { return buffer ? &String::StringIfHelper : 0; } - 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; + public: + // constructors + String( const char *value = "" ); + String( const String &value ); + String( const char ); + String( const unsigned char ); + String( const int, const int base=10); + String( const unsigned int, const int base=10 ); + String( const long, const int base=10 ); + String( const unsigned long, const int base=10 ); + ~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; + int operator < ( const String &rhs ) const; + int operator > ( const String &rhs ) const; + int operator <=( const String &rhs ) const; + int operator >=( const String &rhs ) const; + char operator []( unsigned int index ) const; + char& operator []( unsigned int index ); + //operator const char *() const { return _buffer; } + + // general methods + char charAt( unsigned int index ) const; + int compareTo( const String &anotherString ) const; + unsigned char endsWith( const String &suffix ) const; + unsigned char equals( const String &anObject ) const; + unsigned char equalsIgnoreCase( const String &anotherString ) const; + 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; + int lastIndexOf( const String &str ) const; + int lastIndexOf( const String &str, unsigned int fromIndex ) const; + unsigned int length( ) const { return _length; } + void setCharAt(unsigned int index, const char ch); + unsigned char startsWith( const String &prefix ) const; + unsigned char startsWith( const String &prefix, unsigned int toffset ) const; + String substring( unsigned int beginIndex ) const; + String substring( unsigned int beginIndex, unsigned int endIndex ) const; + String toLowerCase( ) const; + String toUpperCase( ) const; + String trim( ) const; + void getBytes(unsigned char *buf, unsigned int bufsize); + void toCharArray(char *buf, unsigned int bufsize); + long toInt( ); + const String& concat( const String &str ); + String replace( char oldChar, char newChar ); + String replace( const String& match, const String& replace ); + friend String operator + ( String lhs, const String &rhs ); + + 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); + + private: - // 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, unsigned int fromIndex ) const; - int lastIndexOf( const String &str ) const; - int lastIndexOf( const String &str, unsigned 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 +// allocate buffer space +inline void String::getBuffer(unsigned int maxStrLen) { -public: - StringSumHelper(const String &s) : String(s) {} - StringSumHelper(const char *p) : String(p) {} - StringSumHelper(char c) : String(c) {} - StringSumHelper(unsigned char num) : String(num) {} - StringSumHelper(int num) : String(num) {} - StringSumHelper(unsigned int num) : String(num) {} - StringSumHelper(long num) : String(num) {} - StringSumHelper(unsigned long num) : String(num) {} -}; + _capacity = maxStrLen; + _buffer = (char *) malloc(_capacity + 1); + if (_buffer == NULL) _length = _capacity = 0; +} + +inline String operator+( String lhs, const String &rhs ) +{ + return lhs += rhs; +} + -#endif // __cplusplus -#endif // String_class_h +#endif |