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libudev: util - optimize path_encode()
Since we already know the length, use memcpy() instead. Measured 2% _user_ cpu time reduction on EeePC coldplug. Signed-off-by: Alan Jenkins <alan-jenkins@tuffmail.co.uk>
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@ -114,7 +114,6 @@ size_t util_path_encode(char *s, size_t len)
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char t[(len * 3)+1];
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size_t i, j;
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t[0] = '\0';
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for (i = 0, j = 0; s[i] != '\0'; i++) {
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if (s[i] == '/') {
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memcpy(&t[j], "\\x2f", 4);
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@ -127,8 +126,11 @@ size_t util_path_encode(char *s, size_t len)
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j++;
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}
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}
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t[j] = '\0';
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strncpy(s, t, len);
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if (len == 0)
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return j;
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i = (j < len - 1) ? j : len - 1;
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memcpy(s, t, i);
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s[i] = '\0';
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return j;
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}
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