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util: Add function hexits_value() for parsing multiple hex digits.

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Suggested-by: Justin Pettit <jpettit@nicira.com>
This commit is contained in:
Ben Pfaff
2010-11-15 10:18:10 -08:00
parent 96fc46e8fd
commit bf9712678f
8 changed files with 84 additions and 44 deletions
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8
lib/nx-match.c
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@@ -747,17 +747,15 @@ static const char *
parse_hex_bytes(struct ofpbuf *b, const char *s, unsigned int n)
{
while (n--) {
int low, high;
uint8_t byte;
bool ok;
s += strspn(s, " ");
low = hexit_value(*s);
high = low < 0 ? low : hexit_value(s[1]);
if (low < 0 || high < 0) {
byte = hexits_value(s, 2, &ok);
if (!ok) {
ovs_fatal(0, "%.2s: hex digits expected", s);
}
byte = 16 * low + high;
ofpbuf_put(b, &byte, 1);
s += 2;
}