Printit.h

00001 /*
00002   Print.h - Base class that provides print() and println()
00003   Copyright (c) 2008 David A. Mellis.  All right reserved.
00004 
00005   This library is free software; you can redistribute it and/or
00006   modify it under the terms of the GNU Lesser General Public
00007   License as published by the Free Software Foundation; either
00008   version 2.1 of the License, or (at your option) any later version.
00009 
00010   This library is distributed in the hope that it will be useful,
00011   but WITHOUT ANY WARRANTY; without even the implied warranty of
00012   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
00013   Lesser General Public License for more details.
00014 
00015   You should have received a copy of the GNU Lesser General Public
00016   License along with this library; if not, write to the Free Software
00017   Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
00018 */
00019 
00020 #ifndef Printit_h
00021 #define Printit_h
00022 
00023 #include <inttypes.h>
00024 //#include <stdio.h> // for size_t
00025 
00026 #include "WString.h"
00027 #include "Printable.h"
00028 
00029 #define DEC 10
00030 #define HEX 16
00031 #define OCT 8
00032 #define BIN 2
00033 
00034 class Print
00035 {
00036 public:
00037     Print() : write_error(0) {}
00038 
00039     int getWriteError() {
00040         return write_error;
00041     }
00042     void clearWriteError() {
00043         setWriteError(0);
00044     }
00045 
00046     virtual size_t write(uint8_t) = 0;
00047     size_t write(const char *str) {
00048         if (str == NULL) return 0;
00049         return write((const uint8_t *)str, strlen(str));
00050     }
00051     virtual size_t write(const uint8_t *buffer, size_t size);
00052     size_t write(const char *buffer, size_t size) {
00053         return write((const uint8_t *)buffer, size);
00054     }
00055 #if 0
00056     size_t print(const __FlashStringHelper *);
00057 #endif
00058 public:
00059     //size_t print(const String &);
00060     size_t print(char *str);
00061     size_t print(char);
00062     size_t print(unsigned char, int = DEC);
00063     size_t print(int, int = DEC);
00064     size_t print(unsigned int, int = DEC);
00065     size_t print(long, int = DEC);
00066     size_t print(unsigned long, int = DEC);
00067     size_t print(double, int = 2);
00068     size_t print(const Printable&);
00069 #if 0
00070     size_t println(const __FlashStringHelper *);
00071 #endif
00072     //size_t println(const String &s);
00073     size_t println(char *str);
00074     size_t println(char);
00075     size_t println(unsigned char, int = DEC);
00076     size_t println(int, int = DEC);
00077     size_t println(unsigned int, int = DEC);
00078     size_t println(long, int = DEC);
00079     size_t println(unsigned long, int = DEC);
00080     size_t println(double, int = 2);
00081     size_t println(const Printable&);
00082     size_t println(void);
00083     
00084 //private:
00085     int write_error;
00086     size_t printNumber(unsigned long, uint8_t);
00087     size_t printFloat(double, uint8_t);
00088 //protected:
00089     void setWriteError(int err = 1) {
00090         write_error = err;
00091     }
00092 };
00093 
00094 #endif
00095