34 lines
728 B
C
34 lines
728 B
C
#include "strlib.h"
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/*
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* * Copy src to string dst of size siz. At most siz-1 characters
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* * will be copied. Always NUL terminates (unless siz == 0).
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* * Returns strlen(src); if retval >= siz, truncation occurred.
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* */
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size_t
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strlcpy(char *dst, const char *src, size_t siz)
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{
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char *d = dst;
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const char *s = src;
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size_t n = siz;
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/* Copy as many bytes as will fit */
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if (n != 0) {
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while (--n != 0) {
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if ((*d++ = *s++) == '\0')
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break;
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}
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}
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/* Not enough room in dst, add NUL and traverse rest of src */
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if (n == 0) {
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if (siz != 0)
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*d = '\0'; /* NUL-terminate dst */
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while (*s++)
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;
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}
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return(s - src - 1); /* count does not include NUL */
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}
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