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<?php |
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/** |
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* This file is part of WebHelper Parser. |
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* |
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* (c) James <[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 WebHelper\Parser; |
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use WebHelper\Parser\Directive\SimpleDirective; |
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use WebHelper\Parser\Directive\BlockDirective; |
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use WebHelper\Parser\Directive\InclusionDirective; |
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use WebHelper\Parser\Exception\InvalidConfigException; |
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/** |
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* Web server configuration generic compiler. |
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* |
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* @author James <[email protected]> |
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*/ |
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class Compiler |
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{ |
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/** |
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* The string to match as a starting multi-line directive. |
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* |
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* @var string |
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*/ |
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private $startMultiLine; |
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/** |
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* The string to match as an ending multi-line directive. |
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* |
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* @var string |
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*/ |
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private $endMultiLine; |
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/** |
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* The string to match a simple Directive. |
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* |
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* @var string |
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*/ |
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private $simpleDirective; |
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/** |
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* The string to match an inclusion Directive. |
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* |
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* @var string |
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*/ |
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private $inclusionDirective; |
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/** |
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* An absolute path prefix. |
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* |
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* The compiler needs an absolute path prefix to find included files set with a relative path |
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* |
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* @var string |
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*/ |
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private $prefix; |
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/** |
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* Constructor. |
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* |
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* @param string $startMultiLine match as a starting multi-line directive |
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* @param string $endMultiLine match as an ending multi-line directive |
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* @param string $simpleDirective match a simple directive |
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* @param string $inclusionDirective match an inclusion directive |
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*/ |
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public function __construct($startMultiLine, $endMultiLine, $simpleDirective, $inclusionDirective) |
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{ |
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$this->startMultiLine = $startMultiLine; |
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$this->endMultiLine = $endMultiLine; |
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$this->simpleDirective = $simpleDirective; |
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$this->inclusionDirective = $inclusionDirective; |
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} |
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/** |
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* Sets an absolute path prefix. |
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* |
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* @param string $prefix an absolute path prefix |
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*/ |
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public function setPrefix($prefix = '') |
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{ |
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$this->prefix = $prefix; |
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return $this; |
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} |
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/** |
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* Does a nested array of lines depending on container Directives. |
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* |
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* @param array $activeConfig a clean config array of lines |
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* @param string $context the context name |
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* @param string $value an optional context value |
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* |
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* @return Directive\BlockDirective a full context of directives |
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*/ |
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public function doCompile($activeConfig, $context = 'main', $value = '') |
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{ |
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$tempConfig = []; |
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while (!empty($activeConfig)) { |
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$lineConfig = array_shift($activeConfig); |
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$tempConfig[] = $this->subCompile($activeConfig, $lineConfig); |
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} |
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return $this->buildBlockDirective($context, $value, $tempConfig); |
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} |
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/** |
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* Looks for a container directive. |
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* |
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* @param array $activeConfig a clean config array of directives |
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* @param string $lineConfig a line |
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* |
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* @return Directive\DirectiveInterface a directive or a container of directives |
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* |
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* @throws Exception\InvalidConfigException if a simple directive has invalid syntax |
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*/ |
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private function subCompile(&$activeConfig, $lineConfig) |
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{ |
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if (preg_match($this->startMultiLine, $lineConfig, $container)) { |
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return $this->findEndingKey(trim($container['key']), trim($container['value']), $activeConfig); |
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} |
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if (!preg_match($this->simpleDirective, $lineConfig, $container)) { |
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throw InvalidConfigException::forSimpleDirectiveSyntaxError($lineConfig); |
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} |
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return $this->buildSimpleDirective(trim($container['key']), trim($container['value'])); |
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} |
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/** |
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* Finds the end of a container directive. |
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* |
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* @param string $context a container's name |
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* @param string $contextValue a container's value |
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* @param array $activeConfig a clean config array of lines |
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* |
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* @return Directive\BlockDirective a container of directives |
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* |
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* @throws Exception\InvalidConfigException if a container does not end correctly |
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*/ |
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private function findEndingKey($context, $contextValue, &$activeConfig) |
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{ |
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$lines = []; |
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$endMultiLine = sprintf($this->endMultiLine, $context); |
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while (!empty($activeConfig)) { |
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$lineConfig = array_shift($activeConfig); |
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if (preg_match($endMultiLine, $lineConfig)) { |
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return $this->buildBlockDirective($context, $contextValue, $lines); |
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} |
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$lines[] = $this->subCompile($activeConfig, $lineConfig); |
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} |
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throw InvalidConfigException::forEndingKeyNotFound($context); |
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} |
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/** |
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* Builds a BlockDirective. |
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* |
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* @param string $context a container's name |
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* @param string $contextValue a container's value |
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* @param array $lines an array of directives |
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* |
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* @return Directive\BlockDirective the BlockDirective |
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*/ |
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private function buildBlockDirective($context, $contextValue, $lines) |
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{ |
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$block = new BlockDirective($context, $contextValue); |
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foreach ($lines as $directive) { |
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$block->add($directive); |
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} |
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return $block; |
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} |
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/** |
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* Build a SimpleDirective or an InclusionDirective. |
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* |
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* Remember that inclusion are parsed as simple directives but are block directives |
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* |
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* @see Directive\InclusionDirective Inclusion Doc |
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* |
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* @param string $key a directive's name |
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* @param string $value a directive's value |
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* |
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* @return Directive\SimpleDirective|Directive\InclusionDirective the Directive |
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*/ |
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private function buildSimpleDirective($key, $value) |
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{ |
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if (preg_match($this->inclusionDirective, $key)) { |
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return new InclusionDirective($key, $value, $this->prefix); |
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} |
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return new SimpleDirective($key, $value); |
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} |
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} |
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