93 lines
1.5 KiB
C
93 lines
1.5 KiB
C
#include <kernel/util.h>
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//TODO: update me :(
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void *memset(void *s, int c, size_t n)
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{
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while ((int)--n >= 0)
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((uint8_t*)s)[n] = c;
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return (s);
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}
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//TODO: update me :(
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void *memcpy(void *dest, const void *src, size_t count)
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{
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for (size_t i = 0 ; i < count ; i = i + 1)
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((uint8_t*)dest)[i] = ((uint8_t*)src)[i];
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return (dest);
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}
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// TODO: update me :(
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char *strncpy(char *dest, char const *str, size_t size)
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{
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size_t i;
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if (str == NULL || dest == NULL)
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return (0);
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i = -1;
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while (++i < size && str[i] != '\0')
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dest[i] = str[i];
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dest[i] = '\0';
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return (dest);
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}
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// TODO: update me :(
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size_t strnlen(char const *str, size_t maxlen)
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{
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size_t i;
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if (str == NULL)
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return (0);
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i = -1;
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while (str[++i] != '\0' && (size_t)i < maxlen);
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return (i);
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}
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// TODO: update me :(
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size_t strlen(char const *str)
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{
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int i;
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if (str == NULL)
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return (0);
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i = -1;
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while (str[++i] != '\0');
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return (i);
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}
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//TODO: update me :(
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int strcmp(const char *s1, const char *s2)
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{
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if (s1 == NULL || s2 == NULL)
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return (0);
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while (*s1 != '\0' && *s2 != '\0' && *s1 == *s2)
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{
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s1 += 1;
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s2 += 1;
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}
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return (*s1 - *s2);
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}
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//TODO: update me :(
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int strncmp(const char *s1, const char *s2, size_t n)
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{
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if (s1 == NULL || s2 == NULL)
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return (0);
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size_t i = -1;
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while (++i < n && s1[i] != '\0' && s2[i] != '\0' && s1[i] == s2[i]);
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return (s1[i] - s2[i]);
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}
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//TODO asm ?
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char *strrchr(const char *s1, int c)
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{
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void *saved;
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saved = NULL;
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for (int i = 0 ; s1[i] != '\0' ; i++)
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{
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if (s1[i] == (char)c)
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saved = (void *)&s1[i];
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}
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return (saved);
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}
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