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<?php |
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/* (c) Anton Medvedev <[email protected]> |
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* |
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* For the full copyright and license information, please view the LICENSE |
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* file that was distributed with this source code. |
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*/ |
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namespace Deployer\Support\Changelog; |
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class Parser |
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{ |
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/** |
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* @var string[] |
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*/ |
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private $tokens; |
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/** |
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* @var string[] |
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*/ |
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private $span; |
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/** |
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* @var int |
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*/ |
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private $lineNumber = 0; |
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/** |
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* @var bool |
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*/ |
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private $strict; |
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public function __construct(string $changelog, bool $strict = true) |
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{ |
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$this->tokens = preg_split("/\n/", $changelog); |
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$this->strict = $strict; |
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} |
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private function current(): string |
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{ |
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if (count($this->tokens) === 0) { |
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return ""; |
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} |
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return $this->tokens[0]; |
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} |
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private function next(): string |
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{ |
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if (count($this->tokens) === 0) { |
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throw $this->error('Unexpected end of file'); |
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} |
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$n = ++$this->lineNumber; |
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$line = array_shift($this->tokens); |
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$this->span[] = " {$n}: $line"; |
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if (count($this->span) > 4) { |
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array_shift($this->span); |
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} |
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return $line; |
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} |
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2 |
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private function acceptEmptyLine() |
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{ |
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if ($this->strict) { |
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if ("" !== $this->next()) { |
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throw $this->error("Expected an empty line"); |
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} |
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} else { |
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while (preg_match('/^\s*$/', $this->current()) && count($this->tokens) > 0) { |
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$this->next(); |
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} |
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} |
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} |
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private function acceptEof() |
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{ |
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if (count($this->tokens) !== 0) { |
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$this->next(); |
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throw $this->error("Expected EOF"); |
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} |
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} |
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private function matchVersion($line, &$m = null) |
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{ |
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return preg_match('/^\#\# \s ( v\d+\.\d+\.\d+(-[\d\w\.]+)? | master )$/x', $line, $m); |
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} |
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private function error($message): ParseException |
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{ |
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$c = count($this->span) - 1; |
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$this->span[$c] = preg_replace('/^\s{4}/', ' -> ', $this->span[$c]); |
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if (count($this->tokens) > 0) { |
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$this->next(); |
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} |
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return new ParseException($message, join("\n", $this->span)); |
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} |
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public function parse(): Changelog |
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{ |
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$changelog = $this->parseTitle(); |
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$this->acceptEmptyLine(); |
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$this->acceptEmptyLine(); |
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while ($this->matchVersion($this->current())) { |
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$version = $this->parseVersion(); |
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$changelog->addVersion($version); |
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} |
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$refs = $this->parseReferences(); |
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$changelog->setReferences($refs); |
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$this->acceptEmptyLine(); |
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$this->acceptEof(); |
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return $changelog; |
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} |
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private function parseTitle(): Changelog |
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{ |
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if (preg_match('/# (.+)/', $this->next(), $m)) { |
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$c = new Changelog(); |
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$c->setTitle($m[1]); |
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return $c; |
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} |
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throw $this->error("Expected title"); |
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} |
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private function parseVersion(): Version |
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{ |
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if ($this->matchVersion($this->next(), $m)) { |
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$version = new Version(); |
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$version->setVersion($curr = $m[1]); |
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$compareLink = $this->next(); |
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if (!preg_match('/^\[/', $compareLink)) { |
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throw $this->error("Expected link to compare page with previous version"); |
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} |
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$prev = 'v\d+\.\d+\.\d+(-[\d\w\.]+)?'; |
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$regexp = "/ |
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^ \[($prev)\.\.\.$curr\] |
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\(https\:\/\/github\.com\/deployphp\/deployer\/compare\/$prev\.\.\.$curr\) $ |
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/x"; |
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if (preg_match($regexp, $compareLink, $m)) { |
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$version->setPrevious($m[1]); |
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} else { |
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throw $this->error("Error in compare link syntax"); |
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} |
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$this->acceptEmptyLine(); |
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$sections = ['Added', 'Changed', 'Fixed', 'Removed']; |
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$sectionsCount = count($sections); |
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for ($i = 0; $i < $sectionsCount; $i++) { |
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foreach ($sections as $key => $section) { |
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if (preg_match('/^\#\#\# \s ' . $section . ' $/x', $this->current())) { |
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$this->next(); |
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$version->{"set$section"}($this->parseItems()); |
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unset($sections[$key]); |
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$this->acceptEmptyLine(); |
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break; |
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} |
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} |
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} |
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$this->acceptEmptyLine(); |
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return $version; |
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} |
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throw $this->error("Expected version"); |
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} |
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private function parseItems() |
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{ |
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$items = []; |
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while (preg_match('/^\- (.+) $/x', $this->current(), $m)) { |
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$this->next(); |
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$item = new Item(); |
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$message = $m[1]; |
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$ref = '/\[ \#(\d+) \]/x'; |
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preg_match_all($ref, $message, $matches); |
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foreach ($matches[1] as $m) { |
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$item->addReference($m); |
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} |
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$message = trim(preg_replace($ref, '', $message)); |
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$item->setMessage($message); |
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$items[] = $item; |
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} |
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return $items; |
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} |
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private function parseReferences() |
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{ |
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$refs = []; |
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while (preg_match('/^\[/', $this->current())) { |
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if (preg_match('/^ \[\#(\d+)\]\: \s (https\:\/\/github\.com\/deployphp\/deployer\/(issues|pull)\/\d+)$/x', $this->next(), $m)) { |
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$refs[$m[1]] = $m[2]; |
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} else { |
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throw $this->error('Error parsing reference'); |
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} |
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} |
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return $refs; |
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} |
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} |
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deployphp /
deployer
