--- /dev/null
+<?php
+/**
+ * The own template engine for loading caching and sending out images
+ *
+ * @author Roland Haeder <webmaster@ship-simu.org>
+ * @version 0.0.0
+ * @copyright Copyright(c) 2007, 2008 Roland Haeder, this is free software
+ * @license GNU GPL 3.0 or any newer version
+ * @link http://www.ship-simu.org
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+class ImageTemplateEngine extends BaseTemplateEngine implements CompileableTemplate {
+ /**
+ * Main nodes in the XML tree ("image" is ignored)
+ */
+ private $mainNodes = array("type", "resolution", "background-color", "foreground-color", "image-string");
+
+ /**
+ * Sub nodes in the XML tree
+ */
+ private $subNodes = array("width", "height", "red", "green", "blue", "text");
+
+ /**
+ * Image instance
+ */
+ private $imageInstance = null;
+
+ /**
+ * Protected constructor
+ *
+ * @return void
+ */
+ protected function __construct () {
+ // Call parent constructor
+ parent::__construct(__CLASS__);
+
+ // Set part description
+ $this->setObjectDescription("Image template engine");
+
+ // Create unique ID number
+ $this->generateUniqueId();
+
+ // Clean up a little
+ $this->removeNumberFormaters();
+ $this->removeSystemArray();
+ }
+
+ /**
+ * Creates an instance of the class TemplateEngine and prepares it for usage
+ *
+ * @param $basePath The local base path for all templates
+ * @param $langInstance An instance of LanguageSystem (default)
+ * @param $ioInstance An instance of FileIoHandler (default, middleware!)
+ * @return $tplInstance An instance of TemplateEngine
+ * @throws BasePathIsEmptyException If the provided $basePath is empty
+ * @throws InvalidBasePathStringException If $basePath is no string
+ * @throws BasePathIsNoDirectoryException If $basePath is no
+ * directory or not found
+ * @throws BasePathReadProtectedException If $basePath is
+ * read-protected
+ */
+ public final static function createImageTemplateEngine ($basePath, ManageableLanguage $langInstance, FileIoHandler $ioInstance) {
+ // Get a new instance
+ $tplInstance = new ImageTemplateEngine();
+
+ // Is the base path valid?
+ if (empty($basePath)) {
+ // Base path is empty
+ throw new BasePathIsEmptyException($tplInstance, self::EXCEPTION_UNEXPECTED_EMPTY_STRING);
+ } elseif (!is_string($basePath)) {
+ // Is not a string
+ throw new InvalidBasePathStringException(array($tplInstance, $basePath), self::EXCEPTION_INVALID_STRING);
+ } elseif (!is_dir($basePath)) {
+ // Is not a path
+ throw new BasePathIsNoDirectoryException(array($tplInstance, $basePath), self::EXCEPTION_INVALID_PATH_NAME);
+ } elseif (!is_readable($basePath)) {
+ // Is not readable
+ throw new BasePathReadProtectedException(array($tplInstance, $basePath), self::EXCEPTION_READ_PROTECED_PATH);
+ }
+
+ // Get configuration instance
+ $cfgInstance = FrameworkConfiguration::getInstance();
+
+ // Set the base path
+ $tplInstance->setBasePath($basePath);
+
+ // Initialize the variable stack
+ $tplInstance->initVariableStack();
+
+ // Set the language and IO instances
+ $tplInstance->setLanguageInstance($langInstance);
+ $tplInstance->setFileIoInstance($ioInstance);
+
+ // Set template extensions
+ $tplInstance->setRawTemplateExtension($cfgInstance->readConfig('raw_template_extension'));
+ $tplInstance->setCodeTemplateExtension($cfgInstance->readConfig('code_template_extension'));
+
+ // Absolute output path for compiled templates
+ $tplInstance->setCompileOutputPath(PATH . $cfgInstance->readConfig('compile_output_path'));
+
+ // Return the prepared instance
+ return $tplInstance;
+ }
+
+ /**
+ * Renders the given image content
+ *
+ * @param $imageContent A valid XML image content
+ * @return void
+ * @throws XmlParserException If an XML error was found
+ */
+ public function renderImageContent ($imageContent) {
+ // Get an XML parser
+ $xmlParser = xml_parser_create();
+
+ // Force case-folding to on
+ xml_parser_set_option($xmlParser, XML_OPTION_CASE_FOLDING, true);
+
+ // Set object
+ xml_set_object($xmlParser, $this);
+
+ // Set handler call-backs
+ xml_set_element_handler($xmlParser, "startElement", "endElement");
+ xml_set_character_data_handler($xmlParser, "characterHandler");
+
+ // Now parse the XML tree
+ if (!xml_parse($xmlParser, $imageContent)) {
+ // Error found in XML!
+ throw new XmlParserException(array($this, $xmlParser), BaseHelper::EXCEPTION_XML_PARSER_ERROR);
+ } // END - if
+
+ // Free the parser
+ xml_parser_free($xmlParser);
+ }
+
+ /**
+ * Handles the start element of an XML resource
+ *
+ * @param $resource XML parser resource
+ * @param $element The element we shall handle
+ * @param $attributes All attributes
+ * @return void
+ * @throws InvalidXmlNodeException If an unknown/invalid XML node name was found
+ */
+ public function startElement ($resource, $element, array $attributes) {
+ // Initial method name which will never be called...
+ $methodName = "initImage";
+
+ // Make the element name lower-case
+ $element = strtolower($element);
+
+ // Is the element a main node?
+ if (in_array($element, $this->mainNodes)) {
+ // Okay, main node found!
+ $methodName = "setImage" . $this->convertToClassName($element);
+ } elseif (in_array($element, $this->subNodes)) {
+ // Sub node found
+ $methodName = "setImageProperty" . $this->convertToClassName($element);
+ } elseif ($element != "image") {
+ // Invalid node name found
+ throw new InvalidXmlNodeException(array($this, $element, $attributes), self::EXCEPTION_XML_NODE_UNKNOWN);
+ }
+
+ // Call method
+ //* DEBUG: */ echo "call: ".$methodName."<br />\n";
+ call_user_func_array(array($this, $methodName), $attributes);
+ }
+
+ /**
+ * Intializes the image
+ *
+ * @return void
+ * @todo Add cache creation here
+ */
+ private function initImage () {
+ // Unfinished work!
+ }
+
+ /**
+ * Set the image type
+ *
+ * @param $imageType Code fragment or direct value holding the image type
+ * @return void
+ */
+ private function setImageType ($imageType) {
+ // Try to compile it first to get the value from variable stack
+ $imageType = $this->compileRawCode($imageType);
+
+ // Now make a class name of it
+ $className = $this->convertToClassName($imageType."_image");
+
+ // And try to initiate it
+ $this->imageInstance = ObjectFactory::createObjectByName($className);
+ }
+}
+
+// [EOF]
+?>
projects / shipsimu.git / blobdiff