diff options
author | Nick Brassel <nick@tzarc.org> | 2021-08-29 08:20:25 +1000 |
---|---|---|
committer | Nick Brassel <nick@tzarc.org> | 2021-08-29 08:20:25 +1000 |
commit | f061ca497464fe85284906fb163a33eaee7a91ef (patch) | |
tree | 33ef1bfb529aed382e8526c607c4e18717f92571 /lib/usbhost/arduino-1.0.1/cores/arduino/Print.cpp | |
parent | ff65185dec6f97be1eb49f17cea526a0d0bbf3d6 (diff) | |
parent | 4bad375d7c09d949a9dcdd4feba147c9c7a67ec6 (diff) |
Breaking changes develop merge to master, 2021Q3 edition. (#14196)
Diffstat (limited to 'lib/usbhost/arduino-1.0.1/cores/arduino/Print.cpp')
-rw-r--r-- | lib/usbhost/arduino-1.0.1/cores/arduino/Print.cpp | 263 |
1 files changed, 263 insertions, 0 deletions
diff --git a/lib/usbhost/arduino-1.0.1/cores/arduino/Print.cpp b/lib/usbhost/arduino-1.0.1/cores/arduino/Print.cpp new file mode 100644 index 0000000000..e541a6ce71 --- /dev/null +++ b/lib/usbhost/arduino-1.0.1/cores/arduino/Print.cpp @@ -0,0 +1,263 @@ +/* + Print.cpp - Base class that provides print() and println() + Copyright (c) 2008 David A. Mellis. All right reserved. + + 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 + + Modified 23 November 2006 by David A. Mellis + */ + +#include <stdlib.h> +#include <stdio.h> +#include <string.h> +#include <math.h> +#include "Arduino.h" + +#include "Print.h" + +// Public Methods ////////////////////////////////////////////////////////////// + +/* default implementation: may be overridden */ +size_t Print::write(const uint8_t *buffer, size_t size) +{ + size_t n = 0; + while (size--) { + n += write(*buffer++); + } + return n; +} + +size_t Print::print(const __FlashStringHelper *ifsh) +{ + const char PROGMEM *p = (const char PROGMEM *)ifsh; + size_t n = 0; + while (1) { + unsigned char c = pgm_read_byte(p++); + if (c == 0) break; + n += write(c); + } + return n; +} + +size_t Print::print(const String &s) +{ + size_t n = 0; + for (uint16_t i = 0; i < s.length(); i++) { + n += write(s[i]); + } + return n; +} + +size_t Print::print(const char str[]) +{ + return write(str); +} + +size_t Print::print(char c) +{ + return write(c); +} + +size_t Print::print(unsigned char b, int base) +{ + return print((unsigned long) b, base); +} + +size_t Print::print(int n, int base) +{ + return print((long) n, base); +} + +size_t Print::print(unsigned int n, int base) +{ + return print((unsigned long) n, base); +} + +size_t Print::print(long n, int base) +{ + if (base == 0) { + return write(n); + } else if (base == 10) { + if (n < 0) { + int t = print('-'); + n = -n; + return printNumber(n, 10) + t; + } + return printNumber(n, 10); + } else { + return printNumber(n, base); + } +} + +size_t Print::print(unsigned long n, int base) +{ + if (base == 0) return write(n); + else return printNumber(n, base); +} + +size_t Print::print(double n, int digits) +{ + return printFloat(n, digits); +} + +size_t Print::println(const __FlashStringHelper *ifsh) +{ + size_t n = print(ifsh); + n += println(); + return n; +} + +size_t Print::print(const Printable& x) +{ + return x.printTo(*this); +} + +size_t Print::println(void) +{ + size_t n = print('\r'); + n += print('\n'); + return n; +} + +size_t Print::println(const String &s) +{ + size_t n = print(s); + n += println(); + return n; +} + +size_t Print::println(const char c[]) +{ + size_t n = print(c); + n += println(); + return n; +} + +size_t Print::println(char c) +{ + size_t n = print(c); + n += println(); + return n; +} + +size_t Print::println(unsigned char b, int base) +{ + size_t n = print(b, base); + n += println(); + return n; +} + +size_t Print::println(int num, int base) +{ + size_t n = print(num, base); + n += println(); + return n; +} + +size_t Print::println(unsigned int num, int base) +{ + size_t n = print(num, base); + n += println(); + return n; +} + +size_t Print::println(long num, int base) +{ + size_t n = print(num, base); + n += println(); + return n; +} + +size_t Print::println(unsigned long num, int base) +{ + size_t n = print(num, base); + n += println(); + return n; +} + +size_t Print::println(double num, int digits) +{ + size_t n = print(num, digits); + n += println(); + return n; +} + +size_t Print::println(const Printable& x) +{ + size_t n = print(x); + n += println(); + return n; +} + +// Private Methods ///////////////////////////////////////////////////////////// + +size_t Print::printNumber(unsigned long n, uint8_t base) { + char buf[8 * sizeof(long) + 1]; // Assumes 8-bit chars plus zero byte. + char *str = &buf[sizeof(buf) - 1]; + + *str = '\0'; + + // prevent crash if called with base == 1 + if (base < 2) base = 10; + + do { + unsigned long m = n; + n /= base; + char c = m - base * n; + *--str = c < 10 ? c + '0' : c + 'A' - 10; + } while(n); + + return write(str); +} + +size_t Print::printFloat(double number, uint8_t digits) +{ + size_t n = 0; + + // Handle negative numbers + if (number < 0.0) + { + n += print('-'); + number = -number; + } + + // Round correctly so that print(1.999, 2) prints as "2.00" + double rounding = 0.5; + for (uint8_t i=0; i<digits; ++i) + rounding /= 10.0; + + number += rounding; + + // Extract the integer part of the number and print it + unsigned long int_part = (unsigned long)number; + double remainder = number - (double)int_part; + n += print(int_part); + + // Print the decimal point, but only if there are digits beyond + if (digits > 0) { + n += print("."); + } + + // Extract digits from the remainder one at a time + while (digits-- > 0) + { + remainder *= 10.0; + int toPrint = int(remainder); + n += print(toPrint); + remainder -= toPrint; + } + + return n; +} |