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#ifndef STRING_H
#define STRING_H
#include <stddef.h>
#include <stdlib.h>
void *memcpy(void *dest, const void *src, size_t n);
void *memmove(void *dest, const void *src, size_t n);
void *memset(void *s, int c, size_t n);
int memcmp(const void *s1, const void *s2, size_t n);
#if !defined(__PRE_RAM__)
int sprintf(char * buf, const char *fmt, ...);
#endif
// simple string functions
static inline size_t strnlen(const char *src, size_t max)
{
size_t i = 0;
while((*src++) && (i < max)) {
i++;
}
return i;
}
static inline size_t strlen(const char *src)
{
size_t i = 0;
while(*src++) {
i++;
}
return i;
}
static inline char *strchr(const char *s, int c)
{
for (; *s; s++) {
if (*s == c)
return (char *) s;
}
return 0;
}
#if !defined(__PRE_RAM__)
static inline char *strdup(const char *s)
{
size_t sz = strlen(s) + 1;
char *d = malloc(sz);
memcpy(d, s, sz);
return d;
}
#endif
static inline char *strncpy(char *to, const char *from, int count)
{
register char *ret = to;
while (count > 0) {
count--;
if ((*to++ = *from++) == '\0')
break;
}
while (count > 0) {
count--;
*to++ = '\0';
}
return ret;
}
static inline int strcmp(const char *s1, const char *s2)
{
int r;
while ((r = (*s1 - *s2)) == 0 && *s1) {
s1++;
s2++;
}
return r;
}
static inline int strncmp(const char *s1, const char *s2, int maxlen)
{
int i;
for (i = 0; i < maxlen; i++) {
if (s1[i] != s2[i])
return s1[i] - s2[i];
}
return 0;
}
static inline int isspace(int c)
{
switch (c) {
case ' ': case '\f': case '\n':
case '\r': case '\t': case '\v':
return 1;
default:
return 0;
}
}
static inline int isdigit(int c)
{
return (c >= '0' && c <= '9');
}
static inline int isxdigit(int c)
{
return ((c >= '0' && c <= '9') ||
(c >= 'a' && c <= 'f') ||
(c >= 'A' && c <= 'F'));
}
static inline int isupper(int c)
{
return (c >= 'A' && c <= 'Z');
}
static inline int islower(int c)
{
return (c >= 'a' && c <= 'z');
}
static inline int toupper(int c)
{
if (islower(c))
c -= 'a'-'A';
return c;
}
static inline int tolower(int c)
{
if (isupper(c))
c -= 'A'-'a';
return c;
}
#endif /* STRING_H */
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