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authorPerry Hung <iperry@alum.mit.edu>2010-04-25 18:08:56 -0400
committerPerry Hung <iperry@alum.mit.edu>2010-04-25 18:08:56 -0400
commit62552a6f3f93223682f9df2df2614411f7e3d54c (patch)
tree05f71e01c98ac341c029b2a050b796f1be3de8b5 /wirish/Print.cpp
parent7ea059f945003c90ab56b1e6f762df9ae29ddf3c (diff)
downloadlibrambutan-62552a6f3f93223682f9df2df2614411f7e3d54c.tar.gz
librambutan-62552a6f3f93223682f9df2df2614411f7e3d54c.zip
Refactoring:
The 'core' directory has now been renamed to 'wirish.' Wirish is our version of the Arduino Wiring language.
Diffstat (limited to 'wirish/Print.cpp')
-rw-r--r--wirish/Print.cpp211
1 files changed, 211 insertions, 0 deletions
diff --git a/wirish/Print.cpp b/wirish/Print.cpp
new file mode 100644
index 0000000..5a1bc93
--- /dev/null
+++ b/wirish/Print.cpp
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+/*
+ 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 "wirish.h"
+#include "Print.h"
+
+// Public Methods //////////////////////////////////////////////////////////////
+
+/* default implementation: may be overridden */
+void Print::write(const char *str)
+{
+ while (*str)
+ write(*str++);
+}
+
+/* default implementation: may be overridden */
+void Print::write(const uint8 *buffer, uint32 size)
+{
+ while (size--)
+ write(*buffer++);
+}
+
+void Print::print(uint8 b)
+{
+ this->write(b);
+}
+
+void Print::print(char c)
+{
+ print((byte) c);
+}
+
+void Print::print(const char str[])
+{
+ write(str);
+}
+
+void Print::print(int n)
+{
+ print((long) n);
+}
+
+void Print::print(unsigned int n)
+{
+ print((unsigned long) n);
+}
+
+void Print::print(long n)
+{
+ if (n < 0) {
+ print('-');
+ n = -n;
+ }
+ printNumber(n, 10);
+}
+
+void Print::print(unsigned long n)
+{
+ printNumber(n, 10);
+}
+
+void Print::print(long n, int base)
+{
+ if (base == 0)
+ print((char) n);
+ else if (base == 10)
+ print(n);
+ else
+ printNumber(n, base);
+}
+
+void Print::print(double n)
+{
+ printFloat(n, 2);
+}
+
+void Print::println(void)
+{
+ print('\r');
+ print('\n');
+}
+
+void Print::println(char c)
+{
+ print(c);
+ println();
+}
+
+void Print::println(const char c[])
+{
+ print(c);
+ println();
+}
+
+void Print::println(uint8 b)
+{
+ print(b);
+ println();
+}
+
+void Print::println(int n)
+{
+ print(n);
+ println();
+}
+
+void Print::println(unsigned int n)
+{
+ print(n);
+ println();
+}
+
+void Print::println(long n)
+{
+ print(n);
+ println();
+}
+
+void Print::println(unsigned long n)
+{
+ print(n);
+ println();
+}
+
+void Print::println(long n, int base)
+{
+ print(n, base);
+ println();
+}
+
+void Print::println(double n)
+{
+ print(n);
+ println();
+}
+
+// Private Methods /////////////////////////////////////////////////////////////
+
+void Print::printNumber(unsigned long n, uint8 base)
+{
+ unsigned char buf[8 * sizeof(long)]; // Assumes 8-bit chars.
+ unsigned long i = 0;
+
+ if (n == 0) {
+ print('0');
+ return;
+ }
+
+ while (n > 0) {
+ buf[i++] = n % base;
+ n /= base;
+ }
+
+ for (; i > 0; i--)
+ print((char) (buf[i - 1] < 10 ?
+ '0' + buf[i - 1] :
+ 'A' + buf[i - 1] - 10));
+}
+
+void Print::printFloat(double number, uint8 digits)
+{
+ // Handle negative numbers
+ if (number < 0.0)
+ {
+ print('-');
+ number = -number;
+ }
+
+ // Round correctly so that print(1.999, 2) prints as "2.00"
+ double rounding = 0.5;
+ for (uint8 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;
+ print(int_part);
+
+ // Print the decimal point, but only if there are digits beyond
+ if (digits > 0)
+ print(".");
+
+ // Extract digits from the remainder one at a time
+ while (digits-- > 0)
+ {
+ remainder *= 10.0;
+ int toPrint = int(remainder);
+ print(toPrint);
+ remainder -= toPrint;
+ }
+}