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<?php |
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namespace arc; |
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class template |
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{ |
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/** |
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* This method replaces {$key} entries in a string with the value of that key in an arguments list |
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* If the key isn't in the arguments array, it will remain in the returned string as-is. |
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* The arguments list may be an object or an array and the values may be basic types or callable. |
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* In the latter case, the key will be substituted with the return value of the callable. The callable |
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* is called with the key matched. |
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* <code> |
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* $parsedTemplate = \arc\template::substitute( 'Hello {$world} {$foo}', [ 'world' => 'World!' ] ); |
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* // => 'Hello World! {$foo}' |
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*</code> |
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* @param string $template |
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* @param array $arguments |
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* @return string |
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*/ |
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public static function substitute($template, $arguments) |
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{ |
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if (is_object($arguments) && !($arguments instanceof \ArrayObject )) { |
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$arguments = get_object_vars( $arguments ); |
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} |
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$regex = '\{\$(' . join( array_keys( (array) $arguments ), '|' ) . ')\}'; |
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return preg_replace_callback( '/'.$regex.'/', function ($matches) use ($arguments) { |
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$argument = $arguments[ $matches[1] ]; |
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if (is_callable( $argument )) { |
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$argument = call_user_func( $argument, $matches[1] ); |
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} |
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return $argument; |
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}, $template ); |
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} |
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/** |
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* This method is identical to \arc\template::substitute but it removes any keys left over. |
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* <code> |
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* $parsedTemplate = \arc\template::substituteAll( 'Hello {$world} {$foo}', [ 'world' => 'World!' ] ); |
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* // => 'Hello World! ' |
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*</code> |
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* @param string $template |
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* @param array $arguments |
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* @return string |
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*/ |
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public static function substituteAll($template, $arguments) |
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{ |
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return preg_replace('/\{\$.*\}/', '', self::substitute( $template, $arguments ) ); |
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} |
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public static function compile($template) |
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{ |
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$prefix = <<<'EOFUNC' |
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extract( $arguments, EXTR_REFS ); |
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ob_start(); |
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EOFUNC; |
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$postfix = <<<'EOFUNC' |
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$result = ob_get_contents(); |
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ob_end_clean(); |
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return $result; |
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EOFUNC; |
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return create_function( '$arguments', $prefix .' ?'.'>'. $template .'<?'.'php ' . $postfix ); |
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} |
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public static function compileSubstitute($template) |
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{ |
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$template = preg_replace('/EOTEMPLATE;.*$/', '', $template); |
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return self::compile( "<"."?php\n echo <<<EOTEMPLATE\n".$template."\nEOTEMPLATE;\n ?".">"); |
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} |
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public static function run($template, $arguments) |
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{ |
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if (!is_callable($template)) { |
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$template = self::compile( $template ); |
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} |
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return $template( $arguments ); |
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} |
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} |
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Ariadne-CMS /
arc-base
