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<?php |
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declare(strict_types=1); |
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namespace Dallgoot\Yaml; |
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use Dallgoot\Yaml\Yaml as Y; |
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/** |
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* TODO |
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* @category tag in class comment |
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* @package tag in class comment |
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* @author tag in class comment |
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* @license tag in class comment |
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*/ |
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final class Loader |
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{ |
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//public |
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/* @var null|string */ |
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public $error; |
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public const EXCLUDE_DIRECTIVES = 1;//DONT include_directive |
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public const IGNORE_COMMENTS = 2;//DONT include_comments |
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public const NO_PARSING_EXCEPTIONS = 4;//THROW Exception on parsing Errors |
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public const NO_OBJECT_FOR_DATE = 8;//DONT import date strings as dateTime Object |
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//privates |
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/* @var null|string */ |
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private $content; |
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/* @var null|string */ |
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private $filePath; |
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/* @var integer */ |
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private $debug = 0;///TODO: determine levels |
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/* @var integer */ |
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private $options = 0; |
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//Exceptions messages |
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private const INVALID_VALUE = self::class.": at line %d"; |
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private const EXCEPTION_NO_FILE = self::class.": file '%s' does not exists (or path is incorrect?)"; |
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private const EXCEPTION_READ_ERROR = self::class.": file '%s' failed to be loaded (permission denied ?)"; |
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private const EXCEPTION_LINE_SPLIT = self::class.": content is not a string(maybe a file error?)"; |
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public function __construct($absolutePath = null, $options = null, $debug = 0) |
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{ |
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$this->debug = is_int($debug) ? min($debug, 3) : 1; |
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$this->options = is_int($options) ? $options : $this->options; |
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if (is_string($absolutePath)) { |
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$this->load($absolutePath); |
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} |
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} |
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/** |
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* load a file and save its content as $content |
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* |
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* @param string $absolutePath The absolute path of a file |
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* |
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* @throws \Exception if file don't exist OR reading failed |
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* |
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* @return self ( returns the same Loader ) |
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*/ |
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public function load(string $absolutePath):Loader |
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{ |
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$this->filePath = $absolutePath; |
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if (!file_exists($absolutePath)) { |
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throw new \Exception(sprintf(self::EXCEPTION_NO_FILE, $absolutePath)); |
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} |
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$adle = "auto_detect_line_endings"; |
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$prevADLE = ini_get($adle); |
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!$prevADLE && ini_set($adle, "true"); |
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$content = file($absolutePath, FILE_IGNORE_NEW_LINES); |
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!$prevADLE && ini_set($adle, "false"); |
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if (is_bool($content)) { |
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throw new \Exception(sprintf(self::EXCEPTION_READ_ERROR, $absolutePath)); |
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} |
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$this->content = $content; |
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return $this; |
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} |
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/** |
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* Parse Yaml lines into a hierarchy of Node |
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* |
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* @param string $strContent The Yaml string or null to parse loaded content |
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* @throws \Exception if content is not available as $strContent or as $this->content (from file) |
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* @throws \ParseError if any error during parsing or building |
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* |
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* @return array|YamlObject|null null on errors if NO_PARSING_EXCEPTIONS is set, otherwise an array of YamlObject or just YamlObject |
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*/ |
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public function parse($strContent = null) |
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{ |
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$source = $this->content ?? preg_split("/([^\n\r]+)/um", $strContent, 0, PREG_SPLIT_DELIM_CAPTURE); |
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//TODO : be more permissive on $strContent values |
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if (!is_array($source) || !count($source)) throw new \Exception(self::EXCEPTION_LINE_SPLIT); |
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$previous = $root = new Node(); |
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$emptyLines = []; |
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try { |
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$gen = function() use($source) { |
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foreach ($source as $key => $value) { |
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yield ++$key => $value; |
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} |
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}; |
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foreach ($gen() as $lineNb => $lineString) { |
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$n = new Node($lineString, $lineNb); |
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if ($n->type & (Y::LITTERALS|Y::BLANK)) { |
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if ($this->onSpecialType($n, $previous, $emptyLines)) continue; |
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} else { |
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foreach ($emptyLines as $blankNode) { |
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$blankNode->getParent()->add($blankNode); |
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} |
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} |
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$emptyLines = []; |
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switch ($n->indent <=> $previous->indent) { |
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case -1: $target = $previous->getParent($n->indent); |
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break; |
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case 0: $target = $previous->getParent(); |
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break; |
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default: $target = $previous; |
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} |
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if ($this->onContextType($n, $target, $lineString)) continue; |
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$target->add($n); |
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$previous = $n; |
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} |
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if ($this->debug === 2) echo "\033[33mParsed Structure\033[0m\n",var_export($root, true); |
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$out = Builder::buildContent($root, $this->debug); |
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return $out; |
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} catch (\Error|\Exception|\ParseError $e) { |
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$file = basename($this->filePath); |
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$message = basename($e->getFile())."@".$e->getLine().":".$e->getMessage()." in '$file' @".($lineNb)."\n"; |
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if ($e instanceof \ParseError && ($this->options & self::NO_PARSING_EXCEPTIONS)) { |
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trigger_error($message, E_USER_WARNING); |
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$this->error = $message; |
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return null; |
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} |
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var_dump($root); |
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throw new \Exception($message, 3); |
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} |
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} |
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private function onSpecialType(&$n, &$previous, &$emptyLines):bool |
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{ |
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$deepest = $previous->getDeepestNode(); |
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if ($n->type & Y::BLANK) { |
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if ($previous->type & Y::SCALAR) $emptyLines[] = $n->setParent($previous->getParent()); |
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if ($deepest->type & Y::LITTERALS) $emptyLines[] = $n->setParent($deepest); |
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return true; |
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} |
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return false; |
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} |
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private function onContextType(&$n, &$previous, $lineString):bool |
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{ |
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$deepest = $previous->getDeepestNode(); |
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if ($deepest->type & Y::PARTIAL) { |
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//TODO:verify this edge case |
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// if ($n->type === Y::KEY && $n->indent === $previous->indent) { |
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// throw new \ParseError(sprintf(self::INVALID_VALUE, $lineNb), 1); |
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// } |
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$deepest->parse($deepest->value.' '.ltrim($lineString)); |
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return true; |
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} |
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if(($previous->type & Y::LITTERALS) || (($deepest->type & Y::LITTERALS) && is_null($deepest->value))) { |
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$n->type = Y::SCALAR; |
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$n->identifier = null; |
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$n->value = trim($lineString); |
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} |
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if (($deepest->type & (Y::LITTERALS|Y::REF_DEF|Y::SET_VALUE|Y::TAG)) && is_null($deepest->value)) { |
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$previous = $deepest; |
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} |
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return false; |
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} |
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} |
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dallgoot /
yaml
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