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net: generic ascii_to for Netaddress template

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Issue #2837
This commit is contained in:
Martin Stein 2018-05-17 16:55:48 +02:00 committed by Christian Helmuth
parent 43faf63fde
commit 342bdaf4a2
1 changed files with 44 additions and 0 deletions
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44
repos/os/include/net/netaddress.h
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@ -83,4 +83,48 @@ struct Net::Network_address
}
__attribute__((packed));
namespace Genode {
template <unsigned LEN, char DELIM, bool HEX>
inline size_t ascii_to(char const *str,
Net::Network_address<LEN, DELIM, HEX> &result)
{
Net::Network_address<LEN, DELIM, HEX> result_buf;
size_t number_id = 0;
size_t read_len = 0;
while (1) {
/* read the current number */
size_t number_len =
ascii_to_unsigned(str, result_buf.addr[number_id],
HEX ? 16 : 10);
/* fail if there's no number */
if (!number_len) {
return 0; }
/* update read length and number index */
read_len += number_len;
number_id++;
/* if we have all numbers, fill result and return read length */
if (number_id == LEN) {
result = result_buf;
return read_len;
}
/* there are numbers left, check for the delimiter */
str += number_len;
if (*str != DELIM) {
return 0; }
/* seek to next number */
read_len++;
str++;
}
}
}
#endif /* _NET__NETADDRESS_H_ */