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<?php |
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namespace Goetas\Twital\Attribute; |
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use Goetas\Twital\Attribute; |
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use Goetas\Twital\Compiler; |
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use Goetas\Twital\Exception; |
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use Goetas\Twital\Helper\ParserHelper; |
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use Goetas\Twital\Twital; |
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/** |
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* |
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* @author Asmir Mustafic <[email protected]> |
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* |
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*/ |
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class AttrAttribute implements Attribute |
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{ |
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public static function getVarname(\DOMElement $node) |
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{ |
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return "__a" . sha1($node->getAttributeNS(Twital::NS, '__internal-id__') . spl_object_hash($node)); |
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} |
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public function visit(\DOMAttr $att, Compiler $context) |
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{ |
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$node = $att->ownerElement; |
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$expressions = ParserHelper::staticSplitExpression($att->value, ","); |
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$attributes = array(); |
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foreach ($expressions as $k => $expression) { |
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$expressions[$k] = $attrExpr = self::splitAttrExpression($expression); |
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$attNode = null; |
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if ($node->hasAttribute($attrExpr['name'])) { |
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$attNode = $node->getAttributeNode($attrExpr['name']); |
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$node->removeAttributeNode($attNode); |
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} |
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if ($attrExpr['test'] === "true" || $attrExpr['test'] === "1") { |
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unset($expressions[$k]); |
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$attributes[$attrExpr['name']] = "[{$attrExpr['expr']}]"; |
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} elseif ($attNode) { |
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$attributes[$attrExpr['name']] = "['" . addcslashes($attNode->value, "'") . "']"; |
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} else { |
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$attributes[$attrExpr['name']] = "[]"; |
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} |
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} |
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$varName = self::getVarname($node); |
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$code = array(); |
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$code[] = $context->createControlNode("if $varName is not defined"); |
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$code[] = $context->createControlNode("set $varName = {" . ParserHelper::implodeKeyed(",", $attributes, true) . " }"); |
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$code[] = $context->createControlNode("else"); |
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$code[] = $context->createControlNode("set $varName = $varName|merge({" . ParserHelper::implodeKeyed(",", $attributes, true) . "})"); |
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$code[] = $context->createControlNode("endif"); |
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foreach ($expressions as $attrExpr) { |
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$code[] = $context->createControlNode("if {$attrExpr['test']}"); |
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$code[] = $context->createControlNode("set {$varName} = {$varName}|merge({ '{$attrExpr['name']}':[{$attrExpr['expr']}] })"); |
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$code[] = $context->createControlNode("endif"); |
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} |
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$this->addSpecialAttr($node, $varName, $code); |
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$node->removeAttributeNode($att); |
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} |
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public static function splitAttrExpression($str) |
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{ |
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$parts = ParserHelper::staticSplitExpression($str, "?"); |
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if (count($parts) == 1) { |
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$attr = self::findAttrParts($parts[0]); |
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$attr['test'] = 'true'; |
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return $attr; |
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} elseif (count($parts) == 2) { |
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$attr = self::findAttrParts($parts[1]); |
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$attr['test'] = $parts[0]; |
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return $attr; |
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} else { |
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throw new Exception(__CLASS__ . "::splitAttrExpression error in '$str'"); |
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} |
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} |
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protected function addSpecialAttr(\DOMElement $node, $varName, array $code) |
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{ |
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$node->setAttribute("__attr__", $varName); |
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$ref = $node; |
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foreach (array_reverse($code) as $line) { |
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$node->parentNode->insertBefore($line, $ref); |
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$ref = $line; |
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} |
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} |
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protected static function findAttrParts($str) |
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{ |
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$mch = array(); |
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if (preg_match("/^([a-z_][a-z0-9\\-_]*:[a-z][a-z0-9\\-_]*)\\s*=\\s*/i", $str, $mch)) { |
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return array( |
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'name' => $mch[1], |
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'expr' => trim(substr($str, strlen($mch[0]))) |
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); |
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} elseif (preg_match("/^([a-z_][a-z0-9\\-_]*)\\s*=\\s*/i", $str, $mch)) { |
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return array( |
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'name' => $mch[1], |
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'expr' => trim(substr($str, strlen($mch[0]))) |
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); |
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} else { |
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throw new Exception(__CLASS__ . "::findAttrParts error in '$str'"); |
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} |
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} |
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} |
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goetas /
twital
