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#ifndef PSTRUTIL_H
#define PSTRUTIL_H
#include <ctype.h> /* toupper */
/*
* NOTE: unlike strncpy, we return the first character, and we do not
* pad up to n. Same applies to related functions.
*/
/* `strnlen` not widely supported. */
static inline size_t pstrnlen(const char *s, size_t max_len)
{
const char *end = memchr (s, 0, max_len);
return end ? (size_t)(end - s) : max_len;
}
static inline char *pstrcpyupper(char *dst, const char *src) {
char *p = dst;
while (*src) {
*p++ = (char)toupper(*src++);
}
*p = '\0';
return dst;
}
static inline char *pstrncpyupper(char *dst, const char *src, size_t n) {
size_t i;
for (i = 0; i < n && src[i]; ++i) {
dst[i] = (char)toupper(src[i]);
}
if (i < n) {
dst[i] = '\0';
}
return dst;
}
static inline char *pstrtoupper(char *dst) {
char *p;
for (p = dst; *p; ++p) {
*p = (char)toupper(*p);
}
return dst;
}
static inline char *pstrntoupper(char *dst, size_t n) {
size_t i;
for (i = 0; i < n && dst[i]; ++i) {
dst[i] = (char)toupper(dst[i]);
}
return dst;
}
#undef strnlen
#define strnlen pstrnlen
#endif /* PSTRUTIL_H */
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