75 lines
1.5 KiB
C
75 lines
1.5 KiB
C
#include <naiveConsole.h>
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static uint32_t uintToBase(uint64_t value, char *buffer, uint32_t base);
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static char buffer[64] = {'0'};
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static uint8_t *const video = (uint8_t *) 0xB8000;
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static uint8_t *currentVideo = (uint8_t *) 0xB8000;
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static const uint32_t width = 80;
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static const uint32_t height = 25;
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void ncPrint(const char *string) {
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for (int i = 0; string[i] != 0; i++)
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ncPrintChar(string[i]);
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}
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void ncPrintChar(char character) {
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*currentVideo = character;
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currentVideo += 2;
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}
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void ncNewline() {
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do {
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ncPrintChar(' ');
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} while ((uint64_t)(currentVideo - video) % (width * 2) != 0);
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}
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void ncPrintDec(uint64_t value) {
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ncPrintBase(value, 10);
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}
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void ncPrintHex(uint64_t value) {
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ncPrintBase(value, 16);
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}
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void ncPrintBin(uint64_t value) {
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ncPrintBase(value, 2);
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}
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void ncPrintBase(uint64_t value, uint32_t base) {
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uintToBase(value, buffer, base);
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ncPrint(buffer);
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}
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void ncClear() {
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for (int i = 0; i < height * width; i++)
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video[i * 2] = ' ';
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currentVideo = video;
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}
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static uint32_t uintToBase(uint64_t value, char *buffer, uint32_t base) {
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char *p = buffer;
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char *p1, *p2;
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uint32_t digits = 0;
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do {
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uint32_t remainder = value % base;
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*p++ = (remainder < 10) ? remainder + '0' : remainder + 'A' - 10;
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digits++;
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} while (value /= base);
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*p = 0;
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p1 = buffer;
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p2 = p - 1;
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while (p1 < p2) {
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char tmp = *p1;
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*p1 = *p2;
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*p2 = tmp;
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p1++;
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p2--;
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}
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return digits;
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}
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