115 lines
2.1 KiB
C
115 lines
2.1 KiB
C
#include <stddef.h>
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#include <stdint.h>
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#include <lib/libc.h>
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#include <stdbool.h>
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#include <lib/misc.h>
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bool isprint(int c) {
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return c >= ' ' && c <= '~';
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}
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bool isspace(int c) {
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return (c >= '\t' && c <= 0xD) || c == ' ';
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}
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int toupper(int c) {
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if (c >= 'a' && c <= 'z') {
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return c - 0x20;
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}
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return c;
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}
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int tolower(int c) {
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if (c >= 'A' && c <= 'Z') {
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return c + 0x20;
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}
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return c;
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}
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int abs(int i) {
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return i < 0 ? -i : i;
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}
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char *strcpy(char *dest, const char *src) {
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size_t i;
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for (i = 0; src[i]; i++)
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dest[i] = src[i];
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dest[i] = 0;
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return dest;
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}
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char *strncpy(char *dest, const char *src, size_t n) {
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size_t i;
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for (i = 0; i < n && src[i]; i++)
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dest[i] = src[i];
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for ( ; i < n; i++)
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dest[i] = 0;
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return dest;
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}
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int strcmp(const char *s1, const char *s2) {
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for (size_t i = 0; ; i++) {
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char c1 = s1[i], c2 = s2[i];
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if (c1 != c2)
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return c1 < c2 ? -1 : 1;
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if (!c1)
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return 0;
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}
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}
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int strcasecmp(const char *s1, const char *s2) {
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for (size_t i = 0; ; i++) {
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char c1 = s1[i], c2 = s2[i];
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if (tolower(c1) != tolower(c2))
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return c1 < c2 ? -1 : 1;
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if (!c1)
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return 0;
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}
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}
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int strncmp(const char *s1, const char *s2, size_t n) {
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for (size_t i = 0; i < n; i++) {
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char c1 = s1[i], c2 = s2[i];
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if (c1 != c2)
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return c1 < c2 ? -1 : 1;
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if (!c1)
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return 0;
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}
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return 0;
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}
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size_t strlen(const char *str) {
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size_t len;
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for (len = 0; str[len]; len++);
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return len;
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}
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int inet_pton(const char *src, void *dst) {
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uint8_t array[4];
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const char *current = src;
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for (int i = 0; i < 4; i++) {
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const char *newcur;
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uint64_t value = strtoui(current, &newcur, 10);
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if (current == newcur)
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return -1;
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current = newcur;
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if (*current == 0 && i < 3)
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return -1;
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if (value > 255)
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return -1;
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current++;
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array[i] = value;
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}
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memcpy(dst, array, 4);
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return 0;
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}
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