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<?php |
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namespace JeroenDesloovere\VCard\Parser; |
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use JeroenDesloovere\VCard\Exception\ParserException; |
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use JeroenDesloovere\VCard\Parser\Property\NodeParserInterface; |
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use JeroenDesloovere\VCard\VCard; |
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final class VcfParser implements ParserInterface |
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{ |
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/** |
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* @var array - Structure = [node => NodeParserInterface] |
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*/ |
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private $parsers = []; |
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/** |
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* @param string $content |
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* @return VCard[] |
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* @throws ParserException |
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*/ |
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public function getVCards(string $content): array |
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{ |
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// Set possible parsers |
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foreach (VCard::POSSIBLE_VALUES as $propertyClass) { |
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$this->parsers[($propertyClass)::getNode()] = ($propertyClass)::getParser(); |
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} |
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$vCards = []; |
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foreach ($this->splitIntoVCardsContent($content) as $vCardContent) { |
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$vCard = $this->parseVCard($vCardContent); |
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if ($vCard instanceof VCard) { |
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$vCards[] = $vCard; |
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} |
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} |
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return $vCards; |
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} |
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private function parseParameters(?string $parameters): array |
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{ |
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if ($parameters === null) { |
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return []; |
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} |
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$parsedParameters = []; |
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$parameters = explode(';', $parameters); |
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foreach ($parameters as $parameter) { |
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@list($node, $value) = explode('=', $parameter, 2); |
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if (array_key_exists($node, $this->parsers)) { |
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$parsedParameters[$node] = $this->parsers[$node]->parseLine($value); |
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} |
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} |
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return $parsedParameters; |
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} |
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protected function parseVCard(string $content): VCard |
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{ |
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$vCard = new VCard(); |
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$lines = explode("\n", $content); |
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foreach ($lines as $line) { |
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// Strip grouping information. We don't use the group names. We |
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// simply use a list for entries that have multiple values. |
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// As per RFC, group names are alphanumerical, and end with a |
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// period (.). |
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$line = preg_replace('/^\w+\./', '', trim($line)); |
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@list($node, $value) = explode(':', $line, 2); |
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@list($node, $parameters) = explode(';', $node, 2); |
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if (!array_key_exists($node, $this->parsers)) { |
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// @todo: add this line to "not converted" errors. Can be useful to improve the parser. |
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continue; |
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} |
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$parameters = $this->parseParameters($parameters); |
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try { |
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/** |
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* @var NodeParserInterface $this->parsers[$node] |
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*/ |
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$vCard->add($this->parsers[$node]->parseLine($value, $parameters)); |
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} catch (\Exception $e) { |
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// @todo: fetch errors when setting properties that are already set. |
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} |
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} |
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return $vCard; |
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} |
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protected function splitIntoVCardsContent(string $content): array |
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{ |
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// Normalize new lines. |
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$content = str_replace(["\r\n", "\r"], "\n", $content); |
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$content = trim($content); |
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if (!preg_match('/^BEGIN:VCARD[\s\S]+END:VCARD$/', $content)) { |
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throw ParserException::forUnreadableVCard($content); |
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} |
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// Remove first BEGIN:VCARD and last END:VCARD |
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$content = substr($content, 12, -10); |
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// RFC2425 5.8.1. Line delimiting and folding |
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// Unfolding is accomplished by regarding CRLF immediately followed by |
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// a white space character (namely HTAB ASCII decimal 9 or. SPACE ASCII |
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// decimal 32) as equivalent to no characters at all (i.e., the CRLF |
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// and single white space character are removed). |
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$content = preg_replace("/\n(?:[ \t])/", '', $content); |
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// If multiple vcards split per vcard |
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return preg_split('/\nEND:VCARD\s+BEGIN:VCARD\n/', $content); |
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} |
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} |
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jeroendesloovere /
vcard
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