ratio submodule

libbozo/src/string/memcpy.c

@@ -0,0 +1,14 @@
+#include "kprintf.h"
+#include <stddef.h>
+#include <stdint.h>
+
+void *memcpy(void *dest, const void *src, size_t n)
+{
+	uint16_t *c1 = (uint16_t *)dest;
+	const uint16_t *c2 = (const uint16_t *)src;
+
+	for (size_t i = 0; i < n; i++)
+		c1[i] = c2[i];
+	kprintf(0, "c1: %s\n", c1);
+	return c1;
+}

libbozo/src/string/strchr.c

@@ -0,0 +1,14 @@
+#include <stddef.h>
+
+char *strchr(const char *str, int c)
+{
+	char *start = (char *) str;
+
+	while (*start)
+	{
+		if (*start == c)
+			return start;
+		start++;
+	}
+	return NULL;
+}

libbozo/src/string/strcmp.c

@@ -0,0 +1,10 @@
+#include <stddef.h>
+
+int strcmp(const char *s1, const char *s2)
+{
+	size_t i = 0;
+
+	while (s1[i] == s2[i] && s1[i] != '\0')
+		i++;
+	return s1[i] - s2[i];
+}

libbozo/src/string/strlen.c

@@ -0,0 +1,10 @@
+#include <stddef.h>
+
+size_t	strlen(const char *str)
+{
+	const char *start = str;
+
+	while (*start != '\0')
+		start++;
+	return start - str;
+}

libbozo/src/string/strncmp.c

@@ -0,0 +1,12 @@
+#include <stddef.h>
+
+int strncmp(const char *s1, const char *s2, size_t n)
+{
+	size_t i = 0;
+
+	if (n == 0)
+		return 0;
+	while (s1[i] == s2[i] && i < (n - 1))
+		i++;
+	return s1[i] - s2[i];
+}

libbozo/src/string/strstr.c

@@ -0,0 +1,18 @@
+#include "string.h"
+
+#include <stddef.h>
+
+char *strstr(const char *haystack, const char *needle)
+{
+	char *start = (char *) haystack;
+	size_t len;
+
+	len = strlen(needle);
+	while (*start != '\0')
+	{
+		if (strncmp(start, needle, len) == 0)
+			return start;
+		start++;
+	}
+	return NULL;
+}