126 lines
1.8 KiB
C++
126 lines
1.8 KiB
C++
#include <stdbool.h>
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#include "tty.hpp"
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kernelns::TTY::TTY(char* vga)
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{
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this->vga = vga;
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this->cursor = 0;
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this->width = 0;
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this->base = 10;
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}
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kernelns::TTY& kernelns::TTY::operator<<(kernelns::TTY::Format fmt)
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{
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switch(fmt)
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{
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case Binary:
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base = 2;
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break;
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case Decimal:
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base = 10;
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break;
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case Hex:
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base = 16;
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break;
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}
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}
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kernelns::TTY& kernelns::TTY::operator<<(const char* str)
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{
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return printString(str);
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}
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kernelns::TTY& kernelns::TTY::operator<<(unsigned int n)
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{
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return printNumber(n, base, width);
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}
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kernelns::TTY& kernelns::TTY::operator<<(int n)
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{
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return printNumber((unsigned int) n, base, width);
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}
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kernelns::TTY& kernelns::TTY::operator<<(void* n)
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{
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return printNumber((unsigned int) n, 16, 8);
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}
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kernelns::TTY& kernelns::TTY::operator<<(char c)
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{
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return putChar(c);
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}
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void kernelns::TTY::setWidth(size_t width)
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{
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this->width = width;
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}
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size_t kernelns::TTY::getWidth()
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{
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return width;
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}
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void kernelns::TTY::clear()
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{
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for(int i = 0; i < 80*25; i++)
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{
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vga[i * 2] = ' ';
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}
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cursor = 0;
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}
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kernelns::TTY& kernelns::TTY::printNumber(unsigned int n, size_t base,
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size_t width)
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{
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const char* digits = "0123456789ABCDEF";
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char str[33];
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size_t i = 1;
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do
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{
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str[i] = digits[n % base];
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n /= base;
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i++;
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} while(n > 0);
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while(i <= width)
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{
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str[i] = '0';
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i++;
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}
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str[0] = '\0';
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for(char* s = str + (i - 1); *s; s--)
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{
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putChar(*s);
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}
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return *this;
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}
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kernelns::TTY& kernelns::TTY::printString(const char* str)
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{
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while(*str)
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{
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putChar(*str);
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str++;
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}
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return *this;
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}
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kernelns::TTY& kernelns::TTY::putChar(char c)
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{
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switch(c)
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{
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case '\n':
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cursor = (cursor + 80) - (cursor % 80);
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break;
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case '\t':
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cursor = (cursor + 4) - (cursor % 4);
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break;
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case '\r':
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cursor -= cursor % 160;
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break;
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default:
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vga[cursor * 2] = c;
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cursor++;
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}
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return *this;
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}
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