Add 'fromString(const char*)', 'fromString(const String)' to IPAddress class (#68)

This commit is contained in:
Drake Youngkun Min 2016-11-24 16:46:11 +09:00 committed by Me No Dev
parent 67fd652177
commit d8b2290313
2 changed files with 44 additions and 0 deletions

View File

@ -79,3 +79,44 @@ String IPAddress::toString()
return String(szRet);
}
bool IPAddress::fromString(const char *address)
{
// TODO: add support for "a", "a.b", "a.b.c" formats
uint16_t acc = 0; // Accumulator
uint8_t dots = 0;
while (*address)
{
char c = *address++;
if (c >= '0' && c <= '9')
{
acc = acc * 10 + (c - '0');
if (acc > 255) {
// Value out of [0..255] range
return false;
}
}
else if (c == '.')
{
if (dots == 3) {
// Too much dots (there must be 3 dots)
return false;
}
_address.bytes[dots++] = acc;
acc = 0;
}
else
{
// Invalid char
return false;
}
}
if (dots != 3) {
// Too few dots (there must be 3 dots)
return false;
}
_address.bytes[3] = acc;
return true;
}

View File

@ -51,6 +51,9 @@ public:
IPAddress(const uint8_t *address);
virtual ~IPAddress() {}
bool fromString(const char *address);
bool fromString(const String &address) { return fromString(address.c_str()); }
// Overloaded cast operator to allow IPAddress objects to be used where a pointer
// to a four-byte uint8_t array is expected
operator uint32_t() const