/**
* Decode a full taf string into a complete taf object
* @param $raw_taf
* @param $strict
* @return DecodedTaf
*/
private function parseWithMode($raw_taf, $strict)
{
// prepare decoding inputs/outputs: (trim, remove linefeeds and returns, no more than one space)
$clean_taf = trim($raw_taf);
$clean_taf = preg_replace("#\n+#", ' ', $clean_taf);
$clean_taf = preg_replace("#\r+#", ' ', $clean_taf);
$clean_taf = preg_replace('#[ ]{2,}#', ' ', $clean_taf) . ' ';
$clean_taf = strtoupper($clean_taf);
if (strpos($clean_taf, 'CNL') === false) {
// appending END to it is necessary to detect the last line of evolution
// but only when the TAF wasn't cancelled (CNL)
$remaining_taf = trim($clean_taf) . ' END';
} else {
$remaining_taf = $clean_taf;
}
$decoded_taf = new DecodedTaf($clean_taf);
$with_cavok = false;
// call each decoder in the chain and use results to populate decoded taf
foreach ($this->decoder_chain as $chunk_decoder) {
try {
// try to parse a chunk with current chunk decoder
$decoded = $chunk_decoder->parse($remaining_taf, $with_cavok);
// map obtained fields (if any) to the final decoded object
$result = $decoded['result'];
if ($result != null) {
foreach ($result as $key => $value) {
if ($value !== null) {
$setter_name = 'set' . ucfirst($key);
$decoded_taf->{$setter_name}($value);
}
}
}
// update remaining taf for next round
$remaining_taf = $decoded['remaining_taf'];
} catch (ChunkDecoderException $cde) {
// log error in decoded taf and abort decoding if in strict mode
$decoded_taf->addDecodingException($cde);
// abort decoding if strict mode is activated, continue otherwise
if ($strict) {
break;
}
// update remaining taf for next round
$remaining_taf = $cde->getRemainingTaf();
}
// hook for CAVOK decoder, keep CAVOK information in memory
if ($chunk_decoder instanceof VisibilityChunkDecoder) {
$with_cavok = $decoded_taf->getCavok();
}
}
// weather evolutions
$evolutionDecoder = new EvolutionChunkDecoder($strict, $with_cavok);
while ($remaining_taf != null && trim($remaining_taf) != 'END') {
$evolutionDecoder->parse($remaining_taf, $decoded_taf);
$remaining_taf = $evolutionDecoder->getRemaining();
}
return $decoded_taf;
}
