215 lines
8.4 KiB
C++
215 lines
8.4 KiB
C++
/*
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WString.h - String library for Wiring & Arduino
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...mostly rewritten by Paul Stoffregen...
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Copyright (c) 2009-10 Hernando Barragan. All right reserved.
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Copyright 2011, Paul Stoffregen, paul@pjrc.com
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This library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the License, or (at your option) any later version.
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This library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with this library; if not, write to the Free Software
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Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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#ifndef String_class_h
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#define String_class_h
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#ifdef __cplusplus
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#include <stdlib.h>
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#include <string.h>
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#include <ctype.h>
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#include <avr/pgmspace.h>
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// When compiling programs with this class, the following gcc parameters
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// dramatically increase performance and memory (RAM) efficiency, typically
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// with little or no increase in code size.
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// -felide-constructors
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// -std=c++0x
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// An inherited class for holding the result of a concatenation. These
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// result objects are assumed to be writable by subsequent concatenations.
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class StringSumHelper;
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// The string class
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class String
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{
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public:
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// constructors
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String(const char *cstr = NULL);
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String(const String &str);
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#ifdef __GXX_EXPERIMENTAL_CXX0X__
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String(String &&rval);
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String(StringSumHelper &&rval);
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#endif
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String(char c);
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String(unsigned char c);
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String(int, unsigned char base=10);
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String(unsigned int, unsigned char base=10);
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String(long, unsigned char base=10);
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String(unsigned long, unsigned char base=10);
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~String(void);
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// memory management
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unsigned char reserve(unsigned int size);
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inline unsigned int length(void) const {return len;}
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// copy and move
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String & copy(const char *cstr, unsigned int length);
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#ifdef __GXX_EXPERIMENTAL_CXX0X__
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void move(String &rhs);
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#endif
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String & operator = (const String &rhs);
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String & operator = (const char *cstr);
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#ifdef __GXX_EXPERIMENTAL_CXX0X__
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String & operator = (String &&rval);
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String & operator = (StringSumHelper &&rval);
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#endif
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String & operator = (char c);
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// concat
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unsigned char concat(const String &str);
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unsigned char concat(const char *cstr);
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unsigned char concat(char c);
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unsigned char concat(unsigned char c) {return concat((char)c);}
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unsigned char concat(int num);
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unsigned char concat(unsigned int num);
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unsigned char concat(long num);
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unsigned char concat(unsigned long num);
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String & operator += (const String &rhs) {concat(rhs); return (*this);}
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String & operator += (const char *cstr) {concat(cstr); return (*this);}
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String & operator += (char c) {concat(c); return (*this);}
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String & operator += (unsigned char c) {concat((char)c); return (*this);}
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String & operator += (int num) {concat(num); return (*this);}
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String & operator += (unsigned int num) {concat(num); return (*this);}
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String & operator += (long num) {concat(num); return (*this);}
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String & operator += (unsigned long num) {concat(num); return (*this);}
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// concatenate
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friend StringSumHelper & operator + (const StringSumHelper &lhs, const String &rhs);
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friend StringSumHelper & operator + (const StringSumHelper &lhs, const char *cstr);
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friend StringSumHelper & operator + (const StringSumHelper &lhs, char c);
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friend StringSumHelper & operator + (const StringSumHelper &lhs, unsigned char c);
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friend StringSumHelper & operator + (const StringSumHelper &lhs, int num);
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friend StringSumHelper & operator + (const StringSumHelper &lhs, unsigned int num);
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friend StringSumHelper & operator + (const StringSumHelper &lhs, long num);
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friend StringSumHelper & operator + (const StringSumHelper &lhs, unsigned long num);
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// comparison
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operator bool() const;
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int compareTo(const String &s) const;
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unsigned char equals(const String &s) const;
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unsigned char equals(const char *cstr) const;
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unsigned char operator == (const String &rhs) const {return equals(rhs);}
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unsigned char operator == (const char *cstr) const {return equals(cstr);}
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unsigned char operator != (const String &rhs) const {return !equals(rhs);}
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unsigned char operator != (const char *cstr) const {return !equals(cstr);}
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unsigned char operator < (const String &rhs) const;
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unsigned char operator > (const String &rhs) const;
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unsigned char operator <= (const String &rhs) const;
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unsigned char operator >= (const String &rhs) const;
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unsigned char equalsIgnoreCase(const String &s) const;
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unsigned char startsWith( const String &prefix) const;
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unsigned char startsWith(const String &prefix, unsigned int offset) const;
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unsigned char endsWith(const String &suffix) const;
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// character acccess
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char charAt(unsigned int index) const;
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void setCharAt(unsigned int index, char c);
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char operator [] (unsigned int index) const;
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char& operator [] (unsigned int index);
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void getBytes(unsigned char *buf, unsigned int bufsize, unsigned int index=0) const;
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void toCharArray(char *buf, unsigned int bufsize, unsigned int index=0) const
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{getBytes((unsigned char *)buf, bufsize, index);}
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// search
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int indexOf( char ch ) const;
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int indexOf( char ch, unsigned int fromIndex ) const;
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int indexOf( const String &str ) const;
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int indexOf( const String &str, unsigned int fromIndex ) const;
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int lastIndexOf( char ch ) const;
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int lastIndexOf( char ch, int fromIndex ) const;
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int lastIndexOf( const String &str ) const;
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int lastIndexOf( const String &str, int fromIndex ) const;
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String substring( unsigned int beginIndex ) const;
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String substring( unsigned int beginIndex, unsigned int endIndex ) const;
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// modification
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void replace(char find, char replace);
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void replace(const String& find, const String& replace);
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void toLowerCase(void);
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void toUpperCase(void);
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void trim(void);
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// parsing/conversion
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long toInt(void) const;
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protected:
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char *buffer; // the actual char array
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unsigned int capacity; // the array length minus one (for the '\0')
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unsigned int len; // the String length (not counting the '\0')
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unsigned char flags; // unused, for future features
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protected:
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void init(void);
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unsigned char changeBuffer(unsigned int maxStrLen);
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unsigned char concat(const char *cstr, unsigned int length);
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};
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class StringSumHelper : public String
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{
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public:
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StringSumHelper(const String &s) : String(s) {}
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StringSumHelper(const char *p) : String(p) {}
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StringSumHelper(char c) : String(c) {}
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StringSumHelper(unsigned char c) : String(c) {}
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StringSumHelper(int num) : String(num, 10) {}
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StringSumHelper(unsigned int num) : String(num, 10) {}
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StringSumHelper(long num) : String(num, 10) {}
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StringSumHelper(unsigned long num) : String(num, 10) {}
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};
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inline StringSumHelper operator + (const String &lhs, const String &rhs)
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{ return StringSumHelper(lhs) + rhs; }
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inline StringSumHelper operator + (const String &lhs, const char *cstr)
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{ return StringSumHelper(lhs) + cstr; }
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inline StringSumHelper operator + (const String &lhs, char c)
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{ return StringSumHelper(lhs) + c; }
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inline StringSumHelper operator + (const String &lhs, unsigned char c)
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{ return StringSumHelper(lhs) + c; }
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inline StringSumHelper operator + (const String &lhs, int num)
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{ return StringSumHelper(lhs) + num; }
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inline StringSumHelper operator + (const String &lhs, unsigned int num)
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{ return StringSumHelper(lhs) + num; }
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inline StringSumHelper operator + (const String &lhs, long num)
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{ return StringSumHelper(lhs) + num; }
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inline StringSumHelper operator + (const String &lhs, unsigned long num)
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{ return StringSumHelper(lhs) + num; }
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inline StringSumHelper operator + (const char *cstr, const String &rhs)
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{ return StringSumHelper(cstr) + rhs; }
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inline StringSumHelper operator + (char c, const String &rhs)
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{ return StringSumHelper(c) + rhs; }
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inline StringSumHelper operator + (unsigned char c, const String &rhs)
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{ return StringSumHelper(c) + rhs; }
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inline StringSumHelper operator + (int num, const String &rhs)
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{ return StringSumHelper(num) + rhs; }
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inline StringSumHelper operator + (unsigned int num, const String &rhs)
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{ return StringSumHelper(num) + rhs; }
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inline StringSumHelper operator + (long num, const String &rhs)
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{ return StringSumHelper(num) + rhs; }
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inline StringSumHelper operator + (unsigned long num, const String &rhs)
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{ return StringSumHelper(num) + rhs; }
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#endif // __cplusplus
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#endif // String_class_h
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