bool
IGCParseFix(const char *buffer, const IGCExtensions &extensions, IGCFix &fix)
{
if (*buffer != 'B')
return false;
BrokenTime time;
if (!IGCParseTime(buffer + 1, time))
return false;
char valid_char;
int gps_altitude, pressure_altitude;
if (sscanf(buffer + 24, "%c%05d%05d",
&valid_char, &pressure_altitude, &gps_altitude) != 3)
return false;
if (valid_char == 'A')
fix.gps_valid = true;
else if (valid_char == 'V')
fix.gps_valid = false;
else
return false;
fix.gps_altitude = gps_altitude;
fix.pressure_altitude = pressure_altitude;
if (!IGCParseLocation(buffer + 7, fix.location))
return false;
fix.time = time;
fix.ClearExtensions();
const size_t line_length = strlen(buffer);
for (auto i = extensions.begin(), end = extensions.end(); i != end; ++i) {
const IGCExtension &extension = *i;
assert(extension.start > 0);
assert(extension.finish >= extension.start);
if (extension.finish > line_length)
/* exceeds the input line length */
continue;
const char *start = buffer + extension.start - 1;
const char *finish = buffer + extension.finish;
if (StringIsEqual(extension.code, "ENL"))
ParseExtensionValue(start, finish, fix.enl);
else if (StringIsEqual(extension.code, "RPM"))
ParseExtensionValue(start, finish, fix.rpm);
else if (StringIsEqual(extension.code, "HDM"))
ParseExtensionValue(start, finish, fix.hdm);
else if (StringIsEqual(extension.code, "HDT"))
ParseExtensionValue(start, finish, fix.hdt);
else if (StringIsEqual(extension.code, "TRM"))
ParseExtensionValue(start, finish, fix.trm);
else if (StringIsEqual(extension.code, "TRT"))
ParseExtensionValue(start, finish, fix.trt);
else if (StringIsEqual(extension.code, "GSP"))
ParseExtensionValueN(start, finish, 3, fix.gsp);
else if (StringIsEqual(extension.code, "IAS"))
ParseExtensionValueN(start, finish, 3, fix.ias);
else if (StringIsEqual(extension.code, "TAS"))
ParseExtensionValueN(start, finish, 3, fix.tas);
else if (StringIsEqual(extension.code, "SIU"))
ParseExtensionValue(start, finish, fix.siu);
}
return true;
}
