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85 lines
2.3 KiB
PHP
85 lines
2.3 KiB
PHP
#!/usr/bin/env php
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<?php
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$identifiers = new SPDXLicenseIdentifiersOnline;
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$printer = new JsonPrinter;
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$printer->printStringArray($identifiers->getStrings());
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/**
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* SPDX Identifier List from the registry.
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*/
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class SPDXLicenseIdentifiersOnline
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{
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const REGISTRY = 'http://www.spdx.org/licenses/';
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const EXPRESSION = '//*[@typeof="spdx:License"]/code[@property="spdx:licenseId"]/text()';
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private $identifiers;
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/**
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* @return array
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*/
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public function getStrings()
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{
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if ($this->identifiers) {
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return $this->identifiers;
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}
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$this->identifiers = $this->importNodesFromURL(
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self::REGISTRY,
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self::EXPRESSION
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);
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return $this->identifiers;
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}
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private function importNodesFromURL($url, $expressionTextNodes)
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{
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$doc = new DOMDocument();
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$doc->loadHTMLFile($url);
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$xp = new DOMXPath($doc);
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$codes = $xp->query($expressionTextNodes);
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if (!$codes) {
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throw new \Exception(sprintf('XPath query failed: %s', $expressionTextNodes));
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}
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if ($codes->length < 20) {
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throw new \Exception('Obtaining the license table failed, there can not be less than 20 identifiers.');
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}
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$identifiers = array();
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foreach ($codes as $code) {
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$identifiers[] = $code->nodeValue;
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}
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return $identifiers;
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}
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}
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/**
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* Print an array the way this script needs it.
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*/
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class JsonPrinter
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{
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/**
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*
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* @param array $array
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*/
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public function printStringArray(array $array)
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{
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$lines = array('');
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$line = &$lines[0];
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$last = count($array) - 1;
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foreach ($array as $item => $code) {
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$code = sprintf('"%s"%s', trim($code), $item === $last ? '' : ', ');
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$length = strlen($line) + strlen($code) - 1;
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if ($length > 76) {
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$line = rtrim($line);
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unset($line);
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$lines[] = $code;
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$line = &$lines[count($lines) - 1];
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} else {
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$line .= $code;
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}
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}
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$json = sprintf("[%s]", implode("\n ", $lines));
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$json = str_replace(array("[\"", "\"]"), array("[\n \"", "\"\n]"), $json);
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echo $json;
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}
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} |