33 lines
770 B
C
33 lines
770 B
C
#include "strutil.h"
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size_t xstrncpy(char *dest, const char *src, size_t n) {
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size_t i;
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for (i = 0; i < n - 1 && src[i] != '\0'; ++i)
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dest[i] = src[i];
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if (n)
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dest[i] = '\0';
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return src[i] == '\0' ? i : n;
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}
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size_t xstrjoin(char *dst, const char *const tokens[], char sep, size_t n) {
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const char *const *remaining = tokens;
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const char *token = *remaining++;
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size_t i = 0;
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while (token) {
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if (i) {
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dst[i++] = sep;
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if (i == n)
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goto truncated;
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}
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size_t w = xstrncpy(dst + i, token, n - i);
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if (w >= n - i)
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goto truncated;
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i += w;
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token = *remaining++;
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}
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return i;
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truncated:
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dst[n - 1] = '\0';
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return n;
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}
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