From 8eda325ede02d3fc606a34f7fa3c4922b05a84e4 Mon Sep 17 00:00:00 2001
From: EmulatedSeasons <89668582+EmulatedSeasons@users.noreply.github.com>
Date: Thu, 18 Jul 2024 22:25:44 -0400
Subject: Remerged the std stuff into the kernel

---
 libc/printf.c | 199 ----------------------------------------------------------
 1 file changed, 199 deletions(-)
 delete mode 100644 libc/printf.c

(limited to 'libc/printf.c')

diff --git a/libc/printf.c b/libc/printf.c
deleted file mode 100644
index 0bb5506..0000000
--- a/libc/printf.c
+++ /dev/null
@@ -1,199 +0,0 @@
-#include <limits.h>
-#include <stdbool.h>
-#include <stdarg.h>
-#include <stdio.h>
-#include <string.h>
-#include <stdint.h>
-
-static bool print(const char* data, size_t length) {
-	const unsigned char* bytes = (const unsigned char*) data;
-	for (size_t i = 0; i < length; i++)
-		if (putchar(bytes[i]) == EOF)
-			return false;
-	return true;
-}
-
-// for %d and %x.
-static const char* itoa(unsigned int num, char* str, unsigned int base) {
-	int cou = 0; // nt
-
-    if (num == 0) { // 0
-		str[cou] = '0';
-		str[++cou] = '\0';
-		return str;
-	}
-
-	while (num)
-	{
-		unsigned int rem = (num % base);
-		// brings the number up to ascii 0 + the digit
-		if (rem > 9) {
-			str[cou] = rem + '7'; // 7 = 55 + 10(A) = 65
-		} else {
-			str[cou] = rem + '0';
-		}
-		num /= base;
-		++cou;
-	}
-	
-	// reverse the string
-	size_t start = 0;
-	size_t end = cou - 1;
-	while (start < end) {
-		char temp = str[start];
-		str[start] = str[end];
-		str[end] = temp;
-		++start;
-		--end;
-	}
-
-	str[cou] = '\0';
-	return str;
-}
-
-// have no idea if there's a better way to do this. for %lx
-static const char* itoa_u64(unsigned long long num, char* str, int base) {
-	size_t cou = 0; // nt
-
-    if (num == 0) { // 0
-		str[cou] = '0';
-		str[++cou] = '\0';
-		return str;
-	}
-
-	while (num)
-	{
-		unsigned long long rem = num % base;
-		// brings the number up to ascii 0 + the digit
-		if (rem > 9) {
-			str[cou] = rem + '7'; // 7 = 55 + 10(A) = 65
-		} else {
-			str[cou] = rem + '0';
-		}
-		num /= base;
-		++cou;
-	}
-	
-	// reverse the string
-	size_t start = 0;
-	size_t end = cou - 1;
-	while (start < end) {
-		char temp = str[start];
-		str[start] = str[end];
-		str[end] = temp;
-		++start;
-		--end;
-	}
-
-	str[cou] = '\0';
-	return str;
-}
-
-int printf(const char* restrict format, ...) {
-	va_list parameters;
-	va_start(parameters, format);
- 
-	int written = 0;
-
-	while (*format != '\0') {
-		size_t maxrem = INT_MAX - written;
- 
-		if (format[0] != '%' || format[1] == '%') {
-			if (format[0] == '%')
-				format++;
-			size_t amount = 1;
-			while (format[amount] && format[amount] != '%')
-				amount++;
-			if (maxrem < amount) {
-				// TODO: Set errno to EOVERFLOW.
-				return -1;
-			}
-			if (!print(format, amount))
-				return -1;
-			format += amount;
-			written += amount;
-			continue;
-		}
-
-		const char* format_begun_at = format++;
-
-		if (*format == 'c') {
-			format++;
-			char c = (char) va_arg(parameters, int /* char promotes to int */);
-			if (!maxrem) {
-				// TODO: Set errno to EOVERFLOW.
-				return -1;
-			}
-			if (!print(&c, sizeof(c)))
-				return -1;
-			written++;
-		} else if (*format == 'd') {
-			format++;
-			char str[20]; // probably a long enough buffer
-			unsigned int d = va_arg(parameters, unsigned int);
-			itoa(d, str, 10);
-			size_t len = strlen(str);
-			if (maxrem < len) {
-				// TODO: Set errno to EOVERFLOW.
-				return -1;
-			}
-			if (!print(str, len))
-				return -1;
-			written += len;
-		} else if (*format == 'x') {
-			format++;
-			char str[20]; // probably a long enough buffer
-			unsigned int d = va_arg(parameters, unsigned int);
-			itoa(d, str, 16);
-			size_t len = strlen(str);
-			if (maxrem < len) {
-				// TODO: Set errno to EOVERFLOW.
-				return -1;
-			}
-			if (!print(str, len))
-				return -1;
-			written += len;
-		} else if (*format == 'l') { // for %lx and others that start with l
-			format++;
-			if (*format == 'x') {
-				format++;
-				char str[20]; // probably a long enough buffer
-				unsigned long long d = va_arg(parameters, unsigned long long);
-				itoa_u64(d, str, 16);
-				size_t len = strlen(str);
-				if (maxrem < len) {
-					// TODO: Set errno to EOVERFLOW.
-					return -1;
-				}
-				if (!print(str, len))
-					return -1;
-				written += len;
-			}
-		} else if (*format == 's') {
-			format++;
-			const char* str = va_arg(parameters, const char*);
-			size_t len = strlen(str);
-			if (maxrem < len) {
-				// TODO: Set errno to EOVERFLOW.
-				return -1;
-			}
-			if (!print(str, len))
-				return -1;
-			written += len;
-		} else {
-			format = format_begun_at;
-			size_t len = strlen(format);
-			if (maxrem < len) {
-				// TODO: Set errno to EOVERFLOW.
-				return -1;
-			}
-			if (!print(format, len))
-				return -1;
-			written += len;
-			format += len;
-		}
-	}
-
-	va_end(parameters);
-	return written;
-}
\ No newline at end of file
-- 
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