364 lines
16 KiB
PHP
364 lines
16 KiB
PHP
<?php
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/**
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* The SSViewer executes a .ss template file.
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* The SSViewer class handles rendering of .ss templates. In addition to a full template in
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* the views folder, a template in views/Content or views/Layout will be rendered into $Content and
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* $Layout, respectively.
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*
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* Compiled templates are cached. If you put ?flush=1 on your URL, it will force the template to be recompiled. This
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* is a hack; the system should really detect when a page needs re-fetching.
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* @todo Fix the broken caching.
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*/
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class SSViewer extends Object {
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private $chosenTemplates;
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protected $rewriteHashlinks = true;
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protected static $current_theme = null;
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/**
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* Create a template from a string instead of a .ss file
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*/
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static function fromString($content) {
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return new SSViewer_FromString($content);
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}
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static function set_theme($theme) {
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self::$current_theme = $theme;
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}
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static function current_theme() {
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return self::$current_theme;
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}
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/**
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* Pass the SilverStripe template to be used
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*/
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public function __construct($templateList) {
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if(substr((string) $templateList,-3) == '.ss') {
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$this->chosenTemplates['main'] = $templateList;
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} else {
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if(!is_array($templateList)) $templateList = array($templateList);
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$this->chosenTemplates = array();
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global $_TEMPLATE_MANIFEST;
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// if($_REQUEST['showtemplate']) Debug::show($_TEMPLATE_MANIFEST);
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foreach($templateList as $template) {
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if(strpos($template,'/') !== false) list($templateFolder, $template) = explode('/', $template, 2);
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else $templateFolder = null;
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// Use the theme template if available
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if(self::$current_theme && isset($_TEMPLATE_MANIFEST[$template]['themes'][self::$current_theme])) {
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$this->chosenTemplates = array_merge($_TEMPLATE_MANIFEST[$template]['themes'][self::$current_theme],
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$this->chosenTemplates);
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} else if(isset($_TEMPLATE_MANIFEST[$template])) {
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$this->chosenTemplates = array_merge($_TEMPLATE_MANIFEST[$template], $this->chosenTemplates);
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unset($this->chosenTemplates['themes']);
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}
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if($templateFolder) {
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$this->chosenTemplates['main'] = $this->chosenTemplates[$templateFolder];
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unset($this->chosenTemplates[$templateFolder]);
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}
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}
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}
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if(!$this->chosenTemplates) user_error("None of these templates can be found: ". implode(".ss, ", $templateList) . ".ss", E_USER_WARNING);
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parent::__construct();
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}
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/**
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* Returns true if at least one of the listed templates exists
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*/
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static function hasTemplate($templateList) {
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if(!is_array($templateList)) $templateList = array($templateList);
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global $_TEMPLATE_MANIFEST;
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foreach($templateList as $template) {
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if(strpos($template,'/') !== false) list($templateFolder, $template) = explode('/', $template, 2);
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if(isset($_TEMPLATE_MANIFEST[$template])) return true;
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}
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return false;
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}
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/**
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* Set a global rendering option.
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* The following options are available:
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* - rewriteHashlinks: If true (the default), <a href="#..."> will be rewritten to contain the
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* current URL. This lets it play nicely with our <base> tag.
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*/
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public static function setOption($optionName, $optionVal) {
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SSViewer::$options[$optionName] = $optionVal;
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}
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protected static $options = array(
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'rewriteHashlinks' => true,
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);
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protected static $topLevel = null;
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public static function topLevel() {
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return SSViewer::$topLevel;
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}
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/**
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* Call this to disable rewriting of <a href="#xxx"> links. This is useful in Ajax applications.
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* It returns the SSViewer objects, so that you can call new SSViewer("X")->dontRewriteHashlinks()->process();
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*/
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public function dontRewriteHashlinks() {
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$this->rewriteHashlinks = false;
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return $this;
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}
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public function exists() {
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return $this->chosenTemplates;
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}
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public static function getTemplateFile($identifier) {
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global $_TEMPLATE_MANIFEST;
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if(self::$current_theme && isset($_TEMPLATE_MANIFEST[$identifier]['themes'][self::$current_theme]['Includes'])) {
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return $_TEMPLATE_MANIFEST[$identifier]['themes'][self::$current_theme]['Includes'];
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} else if(isset($_TEMPLATE_MANIFEST[$identifier]['Includes'])){
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return $_TEMPLATE_MANIFEST[$identifier]['Includes'];
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} else if(self::$current_theme && isset($_TEMPLATE_MANIFEST[$identifier]['themes'][self::$current_theme]['main'])) {
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return $_TEMPLATE_MANIFEST[$identifier]['themes'][self::$current_theme]['main'];
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} else {
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return isset($_TEMPLATE_MANIFEST[$identifier]['main']) ? $_TEMPLATE_MANIFEST[$identifier]['main'] : null;
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}
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}
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public static function getTemplateContent($identifier) {
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return file_get_contents(SSViewer::getTemplateFile($identifier));
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}
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/**
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* The process() method handles the "meat" of the template processing.
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*/
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public function process($item) {
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SSViewer::$topLevel = $item;
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if(isset($this->chosenTemplates['main'])) {
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$template = $this->chosenTemplates['main'];
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} else {
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$template = $this->chosenTemplates[ reset($dummy = array_keys($this->chosenTemplates)) ];
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}
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if(isset($_GET['debug_profile'])) Profiler::mark("SSViewer::process", " for $template");
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$cacheFile = TEMP_FOLDER . "/.cache" . str_replace(array('\\','/',':'),'.',realpath($template));
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$lastEdited = filemtime($template);
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if(!file_exists($cacheFile) || filemtime($cacheFile) < $lastEdited || isset($_GET['flush'])) {
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if(isset($_GET['debug_profile'])) Profiler::mark("SSViewer::process - compile", " for $template");
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$content = file_get_contents($template);
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$content = SSViewer::parseTemplateContent($content);
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$fh = fopen($cacheFile,'w');
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fwrite($fh, $content);
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fclose($fh);
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if(isset($_GET['debug_profile'])) Profiler::unmark("SSViewer::process - compile", " for $template");
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}
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if(isset($_GET['showtemplate']) && !Director::isLive()) {
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$lines = file($cacheFile);
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echo "<h2>Template: $cacheFile</h2>";
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echo "<pre>";
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foreach($lines as $num => $line) {
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echo str_pad($num+1,5) . htmlentities($line);
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}
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echo "</pre>";
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}
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foreach(array('Content', 'Layout') as $subtemplate) {
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if(isset($this->chosenTemplates[$subtemplate])) {
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$subtemplateViewer = new SSViewer($this->chosenTemplates[$subtemplate]);
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$item = $item->customise(array(
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$subtemplate => $subtemplateViewer->process($item)
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));
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}
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}
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$itemStack = array();
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$val = "";
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include($cacheFile);
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$output = $val;
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$output = Requirements::includeInHTML($template, $output);
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SSViewer::$topLevel = null;
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if(isset($_GET['debug_profile'])) Profiler::unmark("SSViewer::process", " for $template");
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return $output;
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}
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static function parseTemplateContent($content) {
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while(true) {
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$oldContent = $content;
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$content = preg_replace_callback('/<' . '% include +([A-Za-z0-9_]+) +%' . '>/', create_function(
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'$matches', 'return SSViewer::getTemplateContent($matches[1]);'
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), $content);
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if($oldContent == $content) break;
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}
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// $val, $val.property, $val(param), etc.
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$replacements = array(
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'/{\\$([A-Za-z_][A-Za-z0-9_]*)\\(([^),]+), *([^),]+)\\)}/' => '<?= {dlr}item->XML_val("\\1",array("\\2","\\3"),true) ?>',
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'/{\\$([A-Za-z_][A-Za-z0-9_]*)\\(([^),]+)\\)}/' => '<?= {dlr}item->XML_val("\\1",array("\\2"),true) ?>',
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'/{\\$([A-Za-z_][A-Za-z0-9_]*)\\.([A-Za-z0-9_]+)\\.([A-Za-z0-9_]+)}/' => '<?= {dlr}item->obj("\\1",null,true)->obj("\\2",null,true)->XML_val("\\3",null,true) ?>',
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'/{\\$([A-Za-z_][A-Za-z0-9_]*)\\.([A-Za-z0-9_]+)}/' => '<?= {dlr}item->obj("\\1",null,true)->XML_val("\\2",null,true) ?>',
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'/{\\$([A-Za-z_][A-Za-z0-9_]*)}/' => '<?= {dlr}item->XML_val("\\1",null,true) ?>\\2',
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'/\\$([A-Za-z_][A-Za-z0-9_]*)\\.([A-Za-z0-9_]+)\\(([^),]+)\\)([^A-Za-z0-9]|$)/' => '<?= {dlr}item->obj("\\1")->XML_val("\\2",array("\\3"),true) ?>\\4',
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'/\\$([A-Za-z_][A-Za-z0-9_]*)\\(([^),]+), *([^),]+)\\)([^A-Za-z0-9]|$)/' => '<?= {dlr}item->XML_val("\\1",array("\\2","\\3"),true) ?>\\4',
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'/\\$([A-Za-z_][A-Za-z0-9_]*)\\(([^),]+)\\)([^A-Za-z0-9]|$)/' => '<?= {dlr}item->XML_val("\\1",array("\\2"),true) ?>\\3',
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'/\\$([A-Za-z_][A-Za-z0-9_]*)\\.([A-Za-z0-9_]+)\\.([A-Za-z0-9_]+)([^A-Za-z0-9]|$)/' => '<?= {dlr}item->obj("\\1",null,true)->obj("\\2",null,true)->XML_val("\\3",null,true) ?>\\4',
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'/\\$([A-Za-z_][A-Za-z0-9_]*)\\.([A-Za-z0-9_]+)([^A-Za-z0-9]|$)/' => '<?= {dlr}item->obj("\\1",null,true)->XML_val("\\2",null,true) ?>\\3',
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'/\\$([A-Za-z_][A-Za-z0-9_]*)([^A-Za-z0-9]|$)/' => '<?= {dlr}item->XML_val("\\1",null,true) ?>\\2',
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);
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$content = preg_replace(array_keys($replacements), array_values($replacements), $content);
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$content = str_replace('{dlr}','$',$content);
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// legacy
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$content = ereg_replace('<!-- +pc +([A-Za-z0-9_(),]+) +-->', '<' . '% control \\1 %' . '>', $content);
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$content = ereg_replace('<!-- +pc_end +-->', '<' . '% end_control %' . '>', $content);
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$content = ereg_replace('<' . '% +control +([A-Za-z0-9_]+) +%' . '>', '<? array_push($itemStack, $item); if($loop = $item->obj("\\1")) foreach($loop as $item) { ?>', $content);
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$content = ereg_replace('<' . '% +control +([A-Za-z0-9_]+)\\.([A-Za-z0-9_]+) +%' . '>', '<? array_push($itemStack, $item); if(($loop = $item->obj("\\1")) && ($loop = $loop->obj("\\2"))) foreach($loop as $item) { ?>', $content);
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$content = ereg_replace('<' . '% +control +([A-Za-z0-9_]+)\\.([A-Za-z0-9_]+)\\(([A-Za-z0-9_-]+)\\) +%' . '>', '<? array_push($itemStack, $item); if(($loop = $item->obj("\\1")) && ($loop = $loop->obj("\\2", array("\\3")))) foreach($loop as $item) { ?>', $content);
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$content = ereg_replace('<' . '% +control +([A-Za-z0-9_]+)\\(([A-Za-z0-9_-]+)\\) +%' . '>', '<? array_push($itemStack, $item); if($loop = $item->obj("\\1", array("\\2"))) foreach($loop as $item) { ?>', $content);
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$content = ereg_replace('<' . '% +control +([A-Za-z0-9_]+)\\(([A-Za-z0-9_-]+), *([A-Za-z0-9_-]+)\\) +%' . '>', '<? array_push($itemStack, $item); if($loop = $item->obj("\\1", array("\\2","\\3"))) foreach($loop as $item) { ?>', $content);
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$content = ereg_replace('<' . '% +control +([A-Za-z0-9_]+)\\(([A-Za-z0-9_-]+), *([A-Za-z0-9_-]+), *([A-Za-z0-9_-]+)\\) +%' . '>', '<? array_push($itemStack, $item); if($loop = $item->obj("\\1", array("\\2", "\\3", "\\4"))) foreach($loop as $item) { ?>', $content);
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$content = ereg_replace('<' . '% +end_control +%' . '>', '<? } $item = array_pop($itemStack); ?>', $content);
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$content = ereg_replace('<' . '% +debug +%' . '>', '<? Debug::show($item) ?>', $content);
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$content = ereg_replace('<' . '% +debug +([A-Za-z0-9_]+) +%' . '>', '<? Debug::show($item->cachedCall("\\1")) ?>', $content);
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// < % if val1.property % >
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$content = ereg_replace('<' . '% +if +([A-Za-z0-9_]+)\\.([A-Za-z0-9_]+) +%' . '>', '<? if($item->obj("\\1",null,true)->hasValue("\\2")) { ?>', $content);
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// < % if val1(parameter) % >
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$content = ereg_replace('<' . '% +if +([A-Za-z0-9_]+)\\(([A-Za-z0-9_-]+)\\) +%' . '>', '<? if($item->hasValue("\\1",array("\\2"))) { ?>', $content);
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// < % if val1 % >
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$content = ereg_replace('<' . '% +if +([A-Za-z0-9_]+) +%' . '>', '<? if($item->hasValue("\\1")) { ?>', $content);
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$content = ereg_replace('<' . '% +else_if +([A-Za-z0-9_]+) +%' . '>', '<? } else if($item->hasValue("\\1")) { ?>', $content);
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// < % if val1 || val2 % >
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$content = ereg_replace('<' . '% +if +([A-Za-z0-9_]+) *\\|\\|? *([A-Za-z0-9_]+) +%' . '>', '<? if($item->hasValue("\\1") || $item->hasValue("\\2")) { ?>', $content);
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$content = ereg_replace('<' . '% +else_if +([A-Za-z0-9_]+) *\\|\\|? *([A-Za-z0-9_]+) +%' . '>', '<? else_if($item->hasValue("\\1") || $item->hasValue("\\2")) { ?>', $content);
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// < % if val1 && val2 % >
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$content = ereg_replace('<' . '% +if +([A-Za-z0-9_]+) *&&? *([A-Za-z0-9_]+) +%' . '>', '<? if($item->hasValue("\\1") && $item->hasValue("\\2")) { ?>', $content);
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$content = ereg_replace('<' . '% +else_if +([A-Za-z0-9_]+) *&&? *([A-Za-z0-9_]+) +%' . '>', '<? else_if($item->hasValue("\\1") && $item->hasValue("\\2")) { ?>', $content);
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// < % if val1 == val2 % >
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$content = ereg_replace('<' . '% +if +([A-Za-z0-9_]+) *==? *"?([A-Za-z0-9_-]+)"? +%' . '>', '<? if($item->XML_val("\\1",null,true) == "\\2") { ?>', $content);
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$content = ereg_replace('<' . '% +else_if +([A-Za-z0-9_]+) *==? *"?([A-Za-z0-9_-]+)"? +%' . '>', '<? } else if($item->XML_val("\\1",null,true) == "\\2") { ?>', $content);
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// < % if val1 != val2 % >
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$content = ereg_replace('<' . '% +if +([A-Za-z0-9_]+) *!= *"?([A-Za-z0-9_-]+)"? +%' . '>', '<? if($item->XML_val("\\1",null,true) != "\\2") { ?>', $content);
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$content = ereg_replace('<' . '% +else_if +([A-Za-z0-9_]+) *!= *"?([A-Za-z0-9_-]+)"? +%' . '>', '<? } else if($item->XML_val("\\1",null,true) != "\\2") { ?>', $content);
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$content = ereg_replace('<' . '% +else_if +([A-Za-z0-9_]+) +%' . '>', '<? } else if(($test = $item->cachedCall("\\1")) && ((!is_object($test) && $test) || ($test && $test->exists()) )) { ?>', $content);
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$content = ereg_replace('<' . '% +if +([A-Za-z0-9_]+)\\.([A-Za-z0-9_]+) +%' . '>', '<? $test = $item->obj("\\1",null,true)->cachedCall("\\2"); if((!is_object($test) && $test) || ($test && $test->exists())) { ?>', $content);
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$content = ereg_replace('<' . '% +else_if +([A-Za-z0-9_]+)\\.([A-Za-z0-9_]+) +%' . '>', '<? } else if(($test = $item->obj("\\1",null,true)->cachedCall("\\2")) && ((!is_object($test) && $test) || ($test && $test->exists()) )) { ?>', $content);
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$content = ereg_replace('<' . '% +if +([A-Za-z0-9_]+)\\.([A-Za-z0-9_]+)\\.([A-Za-z0-9_]+) +%' . '>', '<? $test = $item->obj("\\1",null,true)->obj("\\2",null,true)->cachedCall("\\3"); if((!is_object($test) && $test) || ($test && $test->exists())) { ?>', $content);
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$content = ereg_replace('<' . '% +else_if +([A-Za-z0-9_]+)\\.([A-Za-z0-9_]+)\\.([A-Za-z0-9_]+) +%' . '>', '<? } else if(($test = $item->obj("\\1",null,true)->obj("\\2",null,true)->cachedCall("\\3")) && ((!is_object($test) && $test) || ($test && $test->exists()) )) { ?>', $content);
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$content = ereg_replace('<' . '% +else +%' . '>', '<? } else { ?>', $content);
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$content = ereg_replace('<' . '% +end_if +%' . '>', '<? } ?>', $content);
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// </base> isnt valid html? !?
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$content = ereg_replace('<' . '% +base_tag +%' . '>', '<base href="<?= Director::absoluteBaseURL(); ?>" />', $content);
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$content = ereg_replace('<' . '% +current_page +%' . '>', '<?= $_SERVER[SCRIPT_URL] ?>', $content);
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// legacy
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$content = ereg_replace('<!-- +if +([A-Za-z0-9_]+) +-->', '<? if($item->cachedCall("\\1")) { ?>', $content);
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$content = ereg_replace('<!-- +else +-->', '<? } else { ?>', $content);
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$content = ereg_replace('<!-- +if_end +-->', '<? } ?>', $content);
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// Fix link stuff
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$content = ereg_replace('href *= *"#', 'href="<?= SSViewer::$options[\'rewriteHashlinks\'] ? Convert::raw2att( $_SERVER[\'REQUEST_URI\'] ) : "" ?>#', $content);
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// Protect xml header
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$content = ereg_replace('<\?xml([^>]+)\?' . '>', '<##xml\\1##>', $content);
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// Turn PHP file into string definition
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$content = str_replace('<?=',"\nSSVIEWER;\n\$val .= ", $content);
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$content = str_replace('<?',"\nSSVIEWER;\n", $content);
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$content = str_replace('?>',";\n \$val .= <<<SSVIEWER\n", $content);
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$content = "<?php \$val .= <<<SSVIEWER\n" . $content . "\nSSVIEWER;\n ?>";
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// Protect xml header @sam why is this run twice ?
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$content = ereg_replace('<##xml([^>]+)##>', '<' . '?xml\\1?' . '>', $content);
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return $content;
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}
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/**
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* Returns the filenames of the template that will be rendered. It is a map that may contain
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* 'Content' & 'Layout', and will have to contain 'main'
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*/
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public function templates() {
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return $this->chosenTemplates;
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}
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}
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class SSViewer_FromString extends SSViewer {
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protected $content;
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public function __construct($content) {
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$this->content = $content;
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}
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public function process($item) {
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$template = SSViewer::parseTemplateContent($this->content);
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$tmpFile = tempnam(TEMP_FOLDER,"");
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$fh = fopen($tmpFile, 'w');
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fwrite($fh, $template);
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|
fclose($fh);
|
|
|
|
if($_GET['showtemplate']) {
|
|
$lines = file($tmpFile);
|
|
echo "<h2>Template: $tmpFile</h2>";
|
|
echo "<pre>";
|
|
foreach($lines as $num => $line) {
|
|
echo str_pad($num+1,5) . htmlentities($line);
|
|
}
|
|
echo "</pre>";
|
|
}
|
|
|
|
$itemStack = array();
|
|
$val = "";
|
|
|
|
include($tmpFile);
|
|
unlink($tmpFile);
|
|
|
|
|
|
return $val;
|
|
}
|
|
}
|
|
|
|
|
|
function supressOutput() {
|
|
return "";
|
|
}
|
|
|
|
?>
|