ITEAD STUDIO / ArduinoAPI

Arduino Core API Library besed on mbed platform.

Dependents:   WeeESP8266 ESP8266_moj

WString.h@4:1fec2e4c60e5, 2015-02-10 (annotated)

Committer:
itead
Date:
Tue Feb 10 10:39:42 2015 +0000
Revision:
4:1fec2e4c60e5
Parent:
0:5ebc917ebd09 
Change buffer size

Who changed what in which revision?

UserRevisionLine numberNew contents of line
itead 0:5ebc917ebd09 1 /*
itead 0:5ebc917ebd09 2 WString.h - String library for Wiring & Arduino
itead 0:5ebc917ebd09 3 ...mostly rewritten by Paul Stoffregen...
itead 0:5ebc917ebd09 4 Copyright (c) 2009-10 Hernando Barragan. All right reserved.
itead 0:5ebc917ebd09 5 Copyright 2011, Paul Stoffregen, paul@pjrc.com
itead 0:5ebc917ebd09 6
itead 0:5ebc917ebd09 7 This library is free software; you can redistribute it and/or
itead 0:5ebc917ebd09 8 modify it under the terms of the GNU Lesser General Public
itead 0:5ebc917ebd09 9 License as published by the Free Software Foundation; either
itead 0:5ebc917ebd09 10 version 2.1 of the License, or (at your option) any later version.
itead 0:5ebc917ebd09 11
itead 0:5ebc917ebd09 12 This library is distributed in the hope that it will be useful,
itead 0:5ebc917ebd09 13 but WITHOUT ANY WARRANTY; without even the implied warranty of
itead 0:5ebc917ebd09 14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
itead 0:5ebc917ebd09 15 Lesser General Public License for more details.
itead 0:5ebc917ebd09 16
itead 0:5ebc917ebd09 17 You should have received a copy of the GNU Lesser General Public
itead 0:5ebc917ebd09 18 License along with this library; if not, write to the Free Software
itead 0:5ebc917ebd09 19 Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
itead 0:5ebc917ebd09 20 */
itead 0:5ebc917ebd09 21
itead 0:5ebc917ebd09 22 #ifndef __ARDUINOAPI_WSTRING_H__
itead 0:5ebc917ebd09 23 #define __ARDUINOAPI_WSTRING_H__
itead 0:5ebc917ebd09 24 #ifdef __cplusplus
itead 0:5ebc917ebd09 25
itead 0:5ebc917ebd09 26 #include "mbed.h"
itead 0:5ebc917ebd09 27
itead 0:5ebc917ebd09 28 #include "itoas.h"
itead 0:5ebc917ebd09 29
itead 0:5ebc917ebd09 30 #include <ctype.h>
itead 0:5ebc917ebd09 31 #include <cstddef>
itead 0:5ebc917ebd09 32 #include <cstdlib>
itead 0:5ebc917ebd09 33 #include <cstdio>
itead 0:5ebc917ebd09 34 #include <cstring>
itead 0:5ebc917ebd09 35
itead 0:5ebc917ebd09 36
itead 0:5ebc917ebd09 37 // An inherited class for holding the result of a concatenation. These
itead 0:5ebc917ebd09 38 // result objects are assumed to be writable by subsequent concatenations.
itead 0:5ebc917ebd09 39 class StringSumHelper;
itead 0:5ebc917ebd09 40
itead 0:5ebc917ebd09 41 // The string class
itead 0:5ebc917ebd09 42 class String
itead 0:5ebc917ebd09 43 {
itead 0:5ebc917ebd09 44 // use a function pointer to allow for "if (s)" without the
itead 0:5ebc917ebd09 45 // complications of an operator bool(). for more information, see:
itead 0:5ebc917ebd09 46 // http://www.artima.com/cppsource/safebool.html
itead 0:5ebc917ebd09 47 typedef void (String::*StringIfHelperType)() const;
itead 0:5ebc917ebd09 48 void StringIfHelper() const {}
itead 0:5ebc917ebd09 49
itead 0:5ebc917ebd09 50 public:
itead 0:5ebc917ebd09 51 // constructors
itead 0:5ebc917ebd09 52 // creates a copy of the initial value.
itead 0:5ebc917ebd09 53 // if the initial value is null or invalid, or if memory allocation
itead 0:5ebc917ebd09 54 // fails, the string will be marked as invalid (i.e. "if (s)" will
itead 0:5ebc917ebd09 55 // be false).
itead 0:5ebc917ebd09 56 String(const char *cstr = "");
itead 0:5ebc917ebd09 57 String(const String &str);
itead 0:5ebc917ebd09 58 #ifdef __GXX_EXPERIMENTAL_CXX0X__
itead 0:5ebc917ebd09 59 String(String &&rval);
itead 0:5ebc917ebd09 60 String(StringSumHelper &&rval);
itead 0:5ebc917ebd09 61 #endif
itead 0:5ebc917ebd09 62 explicit String(char c);
itead 0:5ebc917ebd09 63 explicit String(unsigned char, unsigned char base=10);
itead 0:5ebc917ebd09 64 explicit String(int, unsigned char base=10);
itead 0:5ebc917ebd09 65 explicit String(unsigned int, unsigned char base=10);
itead 0:5ebc917ebd09 66 explicit String(long, unsigned char base=10);
itead 0:5ebc917ebd09 67 explicit String(unsigned long, unsigned char base=10);
itead 0:5ebc917ebd09 68 ~String(void);
itead 0:5ebc917ebd09 69
itead 0:5ebc917ebd09 70 // memory management
itead 0:5ebc917ebd09 71 // return true on success, false on failure (in which case, the string
itead 0:5ebc917ebd09 72 // is left unchanged). reserve(0), if successful, will validate an
itead 0:5ebc917ebd09 73 // invalid string (i.e., "if (s)" will be true afterwards)
itead 0:5ebc917ebd09 74 unsigned char reserve(unsigned int size);
itead 0:5ebc917ebd09 75 inline unsigned int length(void) const {return len;}
itead 0:5ebc917ebd09 76
itead 0:5ebc917ebd09 77 // creates a copy of the assigned value. if the value is null or
itead 0:5ebc917ebd09 78 // invalid, or if the memory allocation fails, the string will be
itead 0:5ebc917ebd09 79 // marked as invalid ("if (s)" will be false).
itead 0:5ebc917ebd09 80 String & operator = (const String &rhs);
itead 0:5ebc917ebd09 81 String & operator = (const char *cstr);
itead 0:5ebc917ebd09 82 #ifdef __GXX_EXPERIMENTAL_CXX0X__
itead 0:5ebc917ebd09 83 String & operator = (String &&rval);
itead 0:5ebc917ebd09 84 String & operator = (StringSumHelper &&rval);
itead 0:5ebc917ebd09 85 #endif
itead 0:5ebc917ebd09 86
itead 0:5ebc917ebd09 87 // concatenate (works w/ built-in types)
itead 0:5ebc917ebd09 88
itead 0:5ebc917ebd09 89 // returns true on success, false on failure (in which case, the string
itead 0:5ebc917ebd09 90 // is left unchanged). if the argument is null or invalid, the
itead 0:5ebc917ebd09 91 // concatenation is considered unsucessful.
itead 0:5ebc917ebd09 92 unsigned char concat(const String &str);
itead 0:5ebc917ebd09 93 unsigned char concat(const char *cstr);
itead 0:5ebc917ebd09 94 unsigned char concat(char c);
itead 0:5ebc917ebd09 95 unsigned char concat(unsigned char c);
itead 0:5ebc917ebd09 96 unsigned char concat(int num);
itead 0:5ebc917ebd09 97 unsigned char concat(unsigned int num);
itead 0:5ebc917ebd09 98 unsigned char concat(long num);
itead 0:5ebc917ebd09 99 unsigned char concat(unsigned long num);
itead 0:5ebc917ebd09 100
itead 0:5ebc917ebd09 101 // if there's not enough memory for the concatenated value, the string
itead 0:5ebc917ebd09 102 // will be left unchanged (but this isn't signalled in any way)
itead 0:5ebc917ebd09 103 String & operator += (const String &rhs) {concat(rhs); return (*this);}
itead 0:5ebc917ebd09 104 String & operator += (const char *cstr) {concat(cstr); return (*this);}
itead 0:5ebc917ebd09 105 String & operator += (char c) {concat(c); return (*this);}
itead 0:5ebc917ebd09 106 String & operator += (unsigned char num) {concat(num); return (*this);}
itead 0:5ebc917ebd09 107 String & operator += (int num) {concat(num); return (*this);}
itead 0:5ebc917ebd09 108 String & operator += (unsigned int num) {concat(num); return (*this);}
itead 0:5ebc917ebd09 109 String & operator += (long num) {concat(num); return (*this);}
itead 0:5ebc917ebd09 110 String & operator += (unsigned long num) {concat(num); return (*this);}
itead 0:5ebc917ebd09 111
itead 0:5ebc917ebd09 112 friend StringSumHelper & operator + (const StringSumHelper &lhs, const String &rhs);
itead 0:5ebc917ebd09 113 friend StringSumHelper & operator + (const StringSumHelper &lhs, const char *cstr);
itead 0:5ebc917ebd09 114 friend StringSumHelper & operator + (const StringSumHelper &lhs, char c);
itead 0:5ebc917ebd09 115 friend StringSumHelper & operator + (const StringSumHelper &lhs, unsigned char num);
itead 0:5ebc917ebd09 116 friend StringSumHelper & operator + (const StringSumHelper &lhs, int num);
itead 0:5ebc917ebd09 117 friend StringSumHelper & operator + (const StringSumHelper &lhs, unsigned int num);
itead 0:5ebc917ebd09 118 friend StringSumHelper & operator + (const StringSumHelper &lhs, long num);
itead 0:5ebc917ebd09 119 friend StringSumHelper & operator + (const StringSumHelper &lhs, unsigned long num);
itead 0:5ebc917ebd09 120
itead 0:5ebc917ebd09 121 // comparison (only works w/ Strings and "strings")
itead 0:5ebc917ebd09 122 operator StringIfHelperType() const { return buffer ? &String::StringIfHelper : 0; }
itead 0:5ebc917ebd09 123 int compareTo(const String &s) const;
itead 0:5ebc917ebd09 124 unsigned char equals(const String &s) const;
itead 0:5ebc917ebd09 125 unsigned char equals(const char *cstr) const;
itead 0:5ebc917ebd09 126 unsigned char operator == (const String &rhs) const {return equals(rhs);}
itead 0:5ebc917ebd09 127 unsigned char operator == (const char *cstr) const {return equals(cstr);}
itead 0:5ebc917ebd09 128 unsigned char operator != (const String &rhs) const {return !equals(rhs);}
itead 0:5ebc917ebd09 129 unsigned char operator != (const char *cstr) const {return !equals(cstr);}
itead 0:5ebc917ebd09 130 unsigned char operator < (const String &rhs) const;
itead 0:5ebc917ebd09 131 unsigned char operator > (const String &rhs) const;
itead 0:5ebc917ebd09 132 unsigned char operator <= (const String &rhs) const;
itead 0:5ebc917ebd09 133 unsigned char operator >= (const String &rhs) const;
itead 0:5ebc917ebd09 134 unsigned char equalsIgnoreCase(const String &s) const;
itead 0:5ebc917ebd09 135 unsigned char startsWith( const String &prefix) const;
itead 0:5ebc917ebd09 136 unsigned char startsWith(const String &prefix, unsigned int offset) const;
itead 0:5ebc917ebd09 137 unsigned char endsWith(const String &suffix) const;
itead 0:5ebc917ebd09 138
itead 0:5ebc917ebd09 139 // character acccess
itead 0:5ebc917ebd09 140 char charAt(unsigned int index) const;
itead 0:5ebc917ebd09 141 void setCharAt(unsigned int index, char c);
itead 0:5ebc917ebd09 142 char operator [] (unsigned int index) const;
itead 0:5ebc917ebd09 143 char& operator [] (unsigned int index);
itead 0:5ebc917ebd09 144 void getBytes(unsigned char *buf, unsigned int bufsize, unsigned int index=0) const;
itead 0:5ebc917ebd09 145 void toCharArray(char *buf, unsigned int bufsize, unsigned int index=0) const
itead 0:5ebc917ebd09 146 {getBytes((unsigned char *)buf, bufsize, index);}
itead 0:5ebc917ebd09 147 const char * c_str() const { return buffer; }
itead 0:5ebc917ebd09 148
itead 0:5ebc917ebd09 149 // search
itead 0:5ebc917ebd09 150 int indexOf( char ch ) const;
itead 0:5ebc917ebd09 151 int indexOf( char ch, unsigned int fromIndex ) const;
itead 0:5ebc917ebd09 152 int indexOf( const String &str ) const;
itead 0:5ebc917ebd09 153 int indexOf( const String &str, unsigned int fromIndex ) const;
itead 0:5ebc917ebd09 154 int lastIndexOf( char ch ) const;
itead 0:5ebc917ebd09 155 int lastIndexOf( char ch, unsigned int fromIndex ) const;
itead 0:5ebc917ebd09 156 int lastIndexOf( const String &str ) const;
itead 0:5ebc917ebd09 157 int lastIndexOf( const String &str, unsigned int fromIndex ) const;
itead 0:5ebc917ebd09 158 String substring( unsigned int beginIndex ) const;
itead 0:5ebc917ebd09 159 String substring( unsigned int beginIndex, unsigned int endIndex ) const;
itead 0:5ebc917ebd09 160
itead 0:5ebc917ebd09 161 // modification
itead 0:5ebc917ebd09 162 void replace(char find, char replace);
itead 0:5ebc917ebd09 163 void replace(const String& find, const String& replace);
itead 0:5ebc917ebd09 164 void toLowerCase(void);
itead 0:5ebc917ebd09 165 void toUpperCase(void);
itead 0:5ebc917ebd09 166 void trim(void);
itead 0:5ebc917ebd09 167
itead 0:5ebc917ebd09 168 // parsing/conversion
itead 0:5ebc917ebd09 169 long toInt(void) const;
itead 0:5ebc917ebd09 170
itead 0:5ebc917ebd09 171 protected:
itead 0:5ebc917ebd09 172 char *buffer; // the actual char array
itead 0:5ebc917ebd09 173 unsigned int capacity; // the array length minus one (for the '\0')
itead 0:5ebc917ebd09 174 unsigned int len; // the String length (not counting the '\0')
itead 0:5ebc917ebd09 175 unsigned char flags; // unused, for future features
itead 0:5ebc917ebd09 176 protected:
itead 0:5ebc917ebd09 177 void init(void);
itead 0:5ebc917ebd09 178 void invalidate(void);
itead 0:5ebc917ebd09 179 unsigned char changeBuffer(unsigned int maxStrLen);
itead 0:5ebc917ebd09 180 unsigned char concat(const char *cstr, unsigned int length);
itead 0:5ebc917ebd09 181
itead 0:5ebc917ebd09 182 // copy and move
itead 0:5ebc917ebd09 183 String & copy(const char *cstr, unsigned int length);
itead 0:5ebc917ebd09 184 #ifdef __GXX_EXPERIMENTAL_CXX0X__
itead 0:5ebc917ebd09 185 void move(String &rhs);
itead 0:5ebc917ebd09 186 #endif
itead 0:5ebc917ebd09 187 };
itead 0:5ebc917ebd09 188
itead 0:5ebc917ebd09 189 class StringSumHelper : public String
itead 0:5ebc917ebd09 190 {
itead 0:5ebc917ebd09 191 public:
itead 0:5ebc917ebd09 192 StringSumHelper(const String &s) : String(s) {}
itead 0:5ebc917ebd09 193 StringSumHelper(const char *p) : String(p) {}
itead 0:5ebc917ebd09 194 StringSumHelper(char c) : String(c) {}
itead 0:5ebc917ebd09 195 StringSumHelper(unsigned char num) : String(num) {}
itead 0:5ebc917ebd09 196 StringSumHelper(int num) : String(num) {}
itead 0:5ebc917ebd09 197 StringSumHelper(unsigned int num) : String(num) {}
itead 0:5ebc917ebd09 198 StringSumHelper(long num) : String(num) {}
itead 0:5ebc917ebd09 199 StringSumHelper(unsigned long num) : String(num) {}
itead 0:5ebc917ebd09 200 };
itead 0:5ebc917ebd09 201
itead 0:5ebc917ebd09 202 #endif // __cplusplus
itead 0:5ebc917ebd09 203 #endif // __ARDUINOAPI_WSTRING_H__