3 * A generic template engine
5 * @author Roland Haeder <webmaster@ship-simu.org>
7 * @copyright Copyright (c) 2007 - 2009 Roland Haeder, this is free software
8 * @license GNU GPL 3.0 or any newer version
9 * @link http://www.ship-simu.org
11 * This program is free software: you can redistribute it and/or modify
12 * it under the terms of the GNU General Public License as published by
13 * the Free Software Foundation, either version 3 of the License, or
14 * (at your option) any later version.
16 * This program is distributed in the hope that it will be useful,
17 * but WITHOUT ANY WARRANTY; without even the implied warranty of
18 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
19 * GNU General Public License for more details.
21 * You should have received a copy of the GNU General Public License
22 * along with this program. If not, see <http://www.gnu.org/licenses/>.
24 class BaseTemplateEngine extends BaseFrameworkSystem {
26 * The local path name where all templates and sub folders for special
27 * templates are stored. We will internally determine the language plus
28 * "html" for web templates or "emails" for email templates
30 private $templateBasePath = '';
35 private $templateType = 'html';
38 * The extension for web and email templates (not compiled templates)
40 private $templateExtension = '.tpl';
43 * The extension for code templates (not compiled templates)
45 private $codeExtension = '.ctp';
48 * Path relative to $templateBasePath and language code for compiled code-templates
50 private $compileOutputPath = 'templates/_compiled/';
53 * The path name for all templates
55 private $genericBasePath = 'templates/';
58 * The raw (maybe uncompiled) template
60 private $rawTemplateData = '';
63 * Template data with compiled-in variables
65 private $compiledData = '';
68 * The last loaded template's FQFN for debugging the engine
70 private $lastTemplate = '';
73 * The variable stack for the templates
75 private $varStack = array();
78 * Loaded templates for recursive protection and detection
80 private $loadedTemplates = array();
83 * Compiled templates for recursive protection and detection
85 private $compiledTemplates = array();
88 * Loaded raw template data
90 private $loadedRawData = null;
93 * Raw templates which are linked in code templates
95 private $rawTemplates = null;
98 * A regular expression for variable=value pairs
100 private $regExpVarValue = '/([\w_]+)(="([^"]*)"|=([\w_]+))?/';
103 * A regular expression for filtering out code tags
105 * E.g.: {?template:variable=value;var2=value2;[...]?}
107 private $regExpCodeTags = '/\{\?([a-z_]+)(:("[^"]+"|[^?}]+)+)?\?\}/';
112 private $helpers = array();
115 * Current variable group
117 private $currGroup = 'general';
120 * All template groups except "general"
122 private $varGroups = array();
127 private $codeBegin = '<?php';
132 private $codeEnd = '?>';
134 // Exception codes for the template engine
135 const EXCEPTION_TEMPLATE_TYPE_IS_UNEXPECTED = 0x110;
136 const EXCEPTION_TEMPLATE_CONTAINS_INVALID_VAR = 0x111;
137 const EXCEPTION_INVALID_VIEW_HELPER = 0x112;
140 * Protected constructor
142 * @param $className Name of the class
145 protected function __construct ($className) {
146 // Call parent constructor
147 parent::__construct($className);
150 $this->removeNumberFormaters();
151 $this->removeSystemArray();
155 * Search for a variable in the stack
157 * @param $var The variable we are looking for
158 * @return $idx FALSE means not found, >=0 means found on a specific index
160 private function isVariableAlreadySet ($var) {
161 // First everything is not found
164 // Is the group there?
165 if (isset($this->varStack[$this->currGroup])) {
167 foreach ($this->varStack[$this->currGroup] as $idx => $currEntry) {
168 //* DEBUG: */ echo __METHOD__.":currGroup={$this->currGroup},idx={$idx},currEntry={$currEntry['name']},var={$var}<br />\n";
169 // Is the entry found?
170 if ($currEntry['name'] == $var) {
172 //* DEBUG: */ echo __METHOD__.":FOUND!<br />\n";
179 // Return the current position
184 * Return a content of a variable or null if not found
186 * @param $var The variable we are looking for
187 * @return $content Content of the variable or null if not found
189 protected function readVariable ($var) {
190 // First everything is not found
193 // Get variable index
194 $found = $this->isVariableAlreadySet($var);
196 // Is the variable found?
197 if ($found !== false) {
199 $found = $this->varStack[$this->currGroup][$found]['value'];
202 //* DEBUG: */ echo __METHOD__.": group=".$this->currGroup.",var=".$var.", found=".$found."<br />\n";
204 // Return the current position
209 * Add a variable to the stack
211 * @param $var The variable we are looking for
212 * @param $value The value we want to store in the variable
215 private function addVariable ($var, $value) {
216 // Set general variable group
217 $this->setVariableGroup('general');
219 // Add it to the stack
220 $this->addGroupVariable($var, $value);
224 * Returns all variables of current group or empty array
226 * @return $result Wether array of found variables or empty array
228 private function readCurrentGroup () {
229 // Default is not found
232 // Is the group there?
233 if (isset($this->varStack[$this->currGroup])) {
235 $result = $this->varStack[$this->currGroup];
243 * Settter for variable group
245 * @param $groupName Name of variable group
246 * @param $add Wether add this group
249 public function setVariableGroup ($groupName, $add = true) {
251 //* DEBIG: */ echo __METHOD__.": currGroup=".$groupName."<br />\n";
252 $this->currGroup = $groupName;
254 // Skip group 'general'
255 if (($groupName != 'general') && ($add === true)) {
256 $this->varGroups[$groupName] = 'OK';
262 * Adds a variable to current group
264 * @param $var Variable to set
265 * @param $value Value to store in variable
268 public function addGroupVariable ($var, $value) {
269 //* DEBUG: */ echo __METHOD__.": group=".$this->currGroup.", var=".$var.", value=".$value."<br />\n";
271 // Get current variables in group
272 $currVars = $this->readCurrentGroup();
274 // Append our variable
280 // Add it to the stack
281 $this->varStack[$this->currGroup] = $currVars;
285 * Modify an entry on the stack
287 * @param $var The variable we are looking for
288 * @param $value The value we want to store in the variable
291 private function modifyVariable ($var, $value) {
292 // Get index for variable
293 $idx = $this->isVariableAlreadySet($var);
295 // Is the variable set?
296 if ($idx !== false) {
298 $this->varStack[$this->currGroup][$idx]['value'] = $value;
303 * Setter for template type. Only 'html', 'emails' and 'compiled' should
306 * @param $templateType The current template's type
309 private final function setTemplateType ($templateType) {
310 $this->templateType = (string) $templateType;
314 * Setter for the last loaded template's FQFN
316 * @param $template The last loaded template
319 private final function setLastTemplate ($template) {
320 $this->lastTemplate = (string) $template;
324 * Getter for the last loaded template's FQFN
326 * @return $template The last loaded template
328 private final function getLastTemplate () {
329 return $this->lastTemplate;
333 * Setter for base path
335 * @param $templateBasePath The relative base path for all templates
338 public final function setTemplateBasePath ($templateBasePath) {
340 $this->templateBasePath = (string) $templateBasePath;
344 * Getter for base path
346 * @return $templateBasePath The relative base path for all templates
348 public final function getTemplateBasePath () {
350 return $this->templateBasePath;
354 * Setter for template extension
356 * @param $templateExtension The file extension for all uncompiled
360 public final function setRawTemplateExtension ($templateExtension) {
362 $this->templateExtension = (string) $templateExtension;
366 * Setter for code template extension
368 * @param $codeExtension The file extension for all uncompiled
372 public final function setCodeTemplateExtension ($codeExtension) {
374 $this->codeExtension = (string) $codeExtension;
378 * Getter for template extension
380 * @return $templateExtension The file extension for all uncompiled
383 public final function getRawTemplateExtension () {
385 return $this->templateExtension;
389 * Getter for code-template extension
391 * @return $codeExtension The file extension for all code-
394 public final function getCodeTemplateExtension () {
396 return $this->codeExtension;
400 * Setter for path of compiled templates
402 * @param $compileOutputPath The local base path for all compiled
406 public final function setCompileOutputPath ($compileOutputPath) {
408 $this->compileOutputPath = (string) $compileOutputPath;
412 * Getter for template type
414 * @return $templateType The current template's type
416 public final function getTemplateType () {
417 return $this->templateType;
421 * Assign (add) a given variable with a value
423 * @param $var The variable we are looking for
424 * @param $value The value we want to store in the variable
426 * @throws EmptyVariableException If the variable name is left empty
428 public final function assignVariable ($var, $value) {
429 // Trim spaces of variable name
432 // Empty variable found?
434 // Throw an exception
435 throw new EmptyVariableException(array($this, 'var'), self::EXCEPTION_UNEXPECTED_EMPTY_STRING);
438 // First search for the variable if it was already added
439 $idx = $this->isVariableAlreadySet($var);
442 if ($idx === false) {
443 // Add it to the stack
444 //* DEBUG: */ echo "ADD: ".$var."<br />\n";
445 $this->addVariable($var, $value);
446 } elseif (!empty($value)) {
447 // Modify the stack entry
448 //* DEBUG: */ echo "MOD: ".$var."<br />\n";
449 $this->modifyVariable($var, $value);
454 * Removes a given variable
456 * @param $var The variable we are looking for
459 public final function removeVariable ($var) {
460 // First search for the variable if it was already added
461 $idx = $this->isVariableAlreadySet($var);
464 if ($idx !== false) {
465 // Remove this variable
466 $this->varStack->offsetUnset($idx);
471 * Private setter for raw template data
473 * @param $rawTemplateData The raw data from the template
476 protected final function setRawTemplateData ($rawTemplateData) {
477 // And store it in this class
478 //* DEBUG: */ echo __METHOD__.':'.$this->getUniqueId().': '.strlen($rawTemplateData).' Bytes set.<br />\n';
479 //* DEBUG: */ echo $this->currGroup.' variables: '.count($this->varStack[$this->currGroup]).', groups='.count($this->varStack).'<br />\n';
480 $this->rawTemplateData = (string) $rawTemplateData;
484 * Getter for raw template data
486 * @return $rawTemplateData The raw data from the template
488 public final function getRawTemplateData () {
489 //* DEBUG: */ echo __METHOD__.':'.$this->getUniqueId().': '.strlen($this->rawTemplateData).' Bytes read.<br />\n';
490 return $this->rawTemplateData;
494 * Private setter for compiled templates
498 private final function setCompiledData ($compiledData) {
499 // And store it in this class
500 //* DEBUG: */ echo __METHOD__.':'.$this->getUniqueId().': '.strlen($compiledData).' Bytes set.<br />\n';
501 $this->compiledData = (string) $compiledData;
505 * Getter for compiled templates
507 * @return $compiledData Compiled template data
509 public final function getCompiledData () {
510 //* DEBUG: */ echo __METHOD__.':'.$this->getUniqueId().': '.strlen($this->compiledData).' Bytes read.<br />\n';
511 return $this->compiledData;
515 * Private loader for all template types
517 * @param $template The template we shall load
520 private function loadTemplate ($template) {
521 // Get extension for the template
522 $ext = $this->getRawTemplateExtension();
524 // If we shall load a code-template we need to switch the file extension
525 if ($this->getTemplateType() == $this->getConfigInstance()->readConfig('code_template_type')) {
526 // Switch over to the code-template extension
527 $ext = $this->getCodeTemplateExtension();
530 // Construct the FQFN for the template by honoring the current language
531 $fqfn = sprintf("%s%s%s%s/%s/%s%s",
532 $this->getConfigInstance()->readConfig('base_path'),
533 $this->getTemplateBasePath(),
534 $this->genericBasePath,
535 $this->getLanguageInstance()->getLanguageCode(),
536 $this->getTemplateType(),
541 // Load the raw template data
542 $this->loadRawTemplateData($fqfn);
546 * A private loader for raw template names
548 * @param $fqfn The full-qualified file name for a template
551 private function loadRawTemplateData ($fqfn) {
552 // Get a input/output instance from the middleware
553 $ioInstance = $this->getFileIoInstance();
555 // Some debug code to look on the file which is being loaded
556 //* DEBUG: */ echo __METHOD__.": FQFN=".$fqfn."<br />\n";
558 // Load the raw template
559 $rawTemplateData = $ioInstance->loadFileContents($fqfn);
561 // Store the template's contents into this class
562 $this->setRawTemplateData($rawTemplateData);
564 // Remember the template's FQFN
565 $this->setLastTemplate($fqfn);
569 * Try to assign an extracted template variable as a "content" or 'config'
572 * @param $varName The variable's name (shall be content orconfig) by
574 * @param $var The variable we want to assign
576 private function assignTemplateVariable ($varName, $var) {
577 // Is it not a config variable?
578 if ($varName != 'config') {
579 // Regular template variables
580 $this->assignVariable($var, '');
582 // Configuration variables
583 $this->assignConfigVariable($var);
588 * Extract variables from a given raw data stream
590 * @param $rawData The raw template data we shall analyze
593 private function extractVariablesFromRawData ($rawData) {
595 $rawData = (string) $rawData;
597 // Search for variables
598 @preg_match_all('/\$(\w+)(\[(\w+)\])?/', $rawData, $variableMatches);
600 // Did we find some variables?
601 if ((is_array($variableMatches)) && (count($variableMatches) == 4) && (count($variableMatches[0]) > 0)) {
602 // Initialize all missing variables
603 foreach ($variableMatches[3] as $key => $var) {
605 $varName = $variableMatches[1][$key];
607 // Workarround: Do not assign empty variables
609 // Try to assign it, empty strings are being ignored
610 $this->assignTemplateVariable($varName, $var);
617 * Main analysis of the loaded template
619 * @param $templateMatches Found template place-holders, see below
622 *---------------------------------
623 * Structure of $templateMatches:
624 *---------------------------------
625 * [0] => Array - An array with all full matches
626 * [1] => Array - An array with left part (before the ':') of a match
627 * [2] => Array - An array with right part of a match including ':'
628 * [3] => Array - An array with right part of a match excluding ':'
630 private function analyzeTemplate (array $templateMatches) {
631 // Backup raw template data
632 $backup = $this->getRawTemplateData();
634 // Initialize some arrays
635 if (is_null($this->loadedRawData)) { $this->loadedRawData = array(); $this->rawTemplates = array(); }
637 // Load all requested templates
638 foreach ($templateMatches[1] as $template) {
640 // Load and compile only templates which we have not yet loaded
641 // RECURSIVE PROTECTION! BE CAREFUL HERE!
642 if ((!isset($this->loadedRawData[$template])) && (!in_array($template, $this->loadedTemplates))) {
644 // Template not found, but maybe variable assigned?
645 //* DEBUG: */ echo __METHOD__.":template={$template}<br />\n";
646 if ($this->isVariableAlreadySet($template) !== false) {
647 // Use that content here
648 $this->loadedRawData[$template] = $this->readVariable($template);
650 // Recursive protection:
651 $this->loadedTemplates[] = $template;
652 } elseif (isset($this->varStack['config'][$template])) {
653 // Use that content here
654 $this->loadedRawData[$template] = $this->varStack['config'][$template];
656 // Recursive protection:
657 $this->loadedTemplates[] = $template;
659 // Then try to search for code-templates
661 // Load the code template and remember it's contents
662 $this->loadCodeTemplate($template);
663 $this->loadedRawData[$template] = $this->getRawTemplateData();
665 // Remember this template for recursion detection
666 // RECURSIVE PROTECTION!
667 $this->loadedTemplates[] = $template;
668 } catch (FileNotFoundException $e) {
669 // Even this is not done... :/
670 $this->rawTemplates[] = $template;
671 } catch (FilePointerNotOpenedException $e) {
672 // Even this is not done... :/
673 $this->rawTemplates[] = $template;
679 // Restore the raw template data
680 $this->setRawTemplateData($backup);
684 * Compile a given raw template code and remember it for later usage
686 * @param $code The raw template code
687 * @param $template The template's name
690 private function compileCode ($code, $template) {
691 // Is this template already compiled?
692 if (in_array($template, $this->compiledTemplates)) {
697 // Remember this template being compiled
698 $this->compiledTemplates[] = $template;
700 // Compile the loaded code in five steps:
702 // 1. Backup current template data
703 $backup = $this->getRawTemplateData();
705 // 2. Set the current template's raw data as the new content
706 $this->setRawTemplateData($code);
708 // 3. Compile the template data
709 $this->compileTemplate();
711 // 4. Remember it's contents
712 $this->loadedRawData[$template] = $this->getRawTemplateData();
714 // 5. Restore the previous raw content from backup variable
715 $this->setRawTemplateData($backup);
719 * Insert all given and loaded templates by running through all loaded
720 * codes and searching for their place-holder in the main template
722 * @param $templateMatches See method analyzeTemplate()
725 private function insertAllTemplates (array $templateMatches) {
726 // Run through all loaded codes
727 foreach ($this->loadedRawData as $template => $code) {
729 // Search for the template
730 $foundIndex = array_search($template, $templateMatches[1]);
732 // Lookup the matching template replacement
733 if (($foundIndex !== false) && (isset($templateMatches[0][$foundIndex]))) {
735 // Get the current raw template
736 $rawData = $this->getRawTemplateData();
738 // Replace the space holder with the template code
739 $rawData = str_replace($templateMatches[0][$foundIndex], $code, $rawData);
741 // Set the new raw data
742 $this->setRawTemplateData($rawData);
748 * Load all extra raw templates
752 private function loadExtraRawTemplates () {
753 // Are there some raw templates we need to load?
754 if (count($this->rawTemplates) > 0) {
755 // Try to load all raw templates
756 foreach ($this->rawTemplates as $key => $template) {
759 $this->loadWebTemplate($template);
761 // Remember it's contents
762 $this->rawTemplates[$template] = $this->getRawTemplateData();
764 // Remove it from the loader list
765 unset($this->rawTemplates[$key]);
767 // Remember this template for recursion detection
768 // RECURSIVE PROTECTION!
769 $this->loadedTemplates[] = $template;
770 } catch (FileNotFoundException $e) {
771 // This template was never found. We silently ignore it
772 unset($this->rawTemplates[$key]);
773 } catch (FilePointerNotOpenedException $e) {
774 // This template was never found. We silently ignore it
775 unset($this->rawTemplates[$key]);
782 * Assign all found template variables
784 * @param $varMatches An array full of variable/value pairs.
786 * @todo Unfinished work or don't die here.
788 private function assignAllVariables (array $varMatches) {
789 // Search for all variables
790 foreach ($varMatches[1] as $key => $var) {
792 // Detect leading equals
793 if (substr($varMatches[2][$key], 0, 1) == '=') {
794 // Remove and cast it
795 $varMatches[2][$key] = (string) substr($varMatches[2][$key], 1);
798 // Do we have some quotes left and right side? Then it is free text
799 if ((substr($varMatches[2][$key], 0, 1) == "\"") && (substr($varMatches[2][$key], -1, 1) == "\"")) {
800 // Free string detected! Which we can assign directly
801 $this->assignVariable($var, $varMatches[3][$key]);
802 } elseif (!empty($varMatches[2][$key])) {
803 // @TODO Non-string found so we need some deeper analysis...
804 ApplicationEntryPoint::app_die('Deeper analysis not yet implemented!');
807 } // for ($varMatches ...
810 * Compiles all loaded raw templates
812 * @param $templateMatches See method analyzeTemplate() for details
815 private function compileRawTemplateData (array $templateMatches) {
816 // Are some code-templates found which we need to compile?
817 if (count($this->loadedRawData) > 0) {
820 foreach ($this->loadedRawData as $template => $code) {
822 // Is this template already compiled?
823 if (in_array($template, $this->compiledTemplates)) {
828 // Search for the template
829 $foundIndex = array_search($template, $templateMatches[1]);
831 // Lookup the matching variable data
832 if (($foundIndex !== false) && (isset($templateMatches[3][$foundIndex]))) {
834 // Split it up with another reg. exp. into variable=value pairs
835 preg_match_all($this->regExpVarValue, $templateMatches[3][$foundIndex], $varMatches);
837 // Assign all variables
838 $this->assignAllVariables($varMatches);
840 } // END - if (isset($templateMatches ...
842 // Compile the loaded template
843 $this->compileCode($code, $template);
845 } // END - foreach ($this->loadedRawData ...
847 // Insert all templates
848 $this->insertAllTemplates($templateMatches);
850 } // END - if (count($this->loadedRawData) ...
854 * Inserts all raw templates into their respective variables
858 private function insertRawTemplates () {
859 // Load all templates
860 foreach ($this->rawTemplates as $template => $content) {
861 // Set the template as a variable with the content
862 $this->assignVariable($template, $content);
867 * Finalizes the compilation of all template variables
871 private function finalizeVariableCompilation () {
873 $content = $this->getRawTemplateData();
874 //* DEBUG: */ echo __METHOD__.': content before='.strlen($content).' ('.md5($content).')<br />\n';
876 // Walk through all variables
877 foreach ($this->varStack['general'] as $currEntry) {
878 //* DEBUG: */ echo __METHOD__.': name='.$currEntry['name'].', value=<pre>'.htmlentities($currEntry['value']).'</pre>\n';
879 // Replace all [$var] or {?$var?} with the content
880 // @TODO Old behaviour, will become obsolete!
881 $content = str_replace("\$content[".$currEntry['name'].']', $currEntry['value'], $content);
883 // @TODO Yet another old way
884 $content = str_replace('['.$currEntry['name'].']', $currEntry['value'], $content);
887 $content = str_replace('{?'.$currEntry['name'].'?}', $currEntry['value'], $content);
890 //* DEBUG: */ echo __METHOD__.': content after='.strlen($content).' ('.md5($content).')<br />\n';
892 // Set the content back
893 $this->setRawTemplateData($content);
897 * Load a specified web template into the engine
899 * @param $template The web template we shall load which is located in
903 public function loadWebTemplate ($template) {
905 $this->setTemplateType($this->getConfigInstance()->readConfig('web_template_type'));
907 // Load the special template
908 $this->loadTemplate($template);
912 * Assign a given congfiguration variable with a value
914 * @param $var The configuration variable we want to assign
917 public function assignConfigVariable ($var) {
918 // Sweet and simple...
919 //* DEBUG: */ echo __METHOD__.':var={$var}<br />\n';
920 $this->varStack['config'][$var] = $this->getConfigInstance()->readConfig($var);
924 * Load a specified email template into the engine
926 * @param $template The email template we shall load which is located in
927 * 'emails' by default
930 public function loadEmailTemplate ($template) {
932 $this->setTemplateType($this->getConfigInstance()->readConfig('email_template_type'));
934 // Load the special template
935 $this->loadTemplate($template);
939 * Load a specified code template into the engine
941 * @param $template The code template we shall load which is
942 * located in 'code' by default
945 public function loadCodeTemplate ($template) {
947 $this->setTemplateType($this->getConfigInstance()->readConfig('code_template_type'));
949 // Load the special template
950 $this->loadTemplate($template);
954 * Compile all variables by inserting their respective values
957 * @todo Make this code some nicer...
959 public final function compileVariables () {
960 // Initialize the $content array
961 $validVar = $this->getConfigInstance()->readConfig('tpl_valid_var');
964 // Iterate through all general variables
965 foreach ($this->varStack['general'] as $currVariable) {
966 // Transfer it's name/value combination to the $content array
967 //* DEBUG: */ echo $currVariable['name'].'=<pre>'.htmlentities($currVariable['value']).'</pre>\n';
968 $dummy[$currVariable['name']] = $currVariable['value'];
971 // Set the new variable (don't remove the second dollar!)
974 // Prepare all configuration variables
976 if (isset($this->varStack['config'])) {
977 $config = $this->varStack['config'];
980 // Remove some variables
982 unset($currVariable);
984 // Run the compilation three times to get content from helper classes in
987 // Finalize the compilation of template variables
988 $this->finalizeVariableCompilation();
990 // Prepare the eval() command for comiling the template
991 $eval = sprintf("\$result = \"%s\";",
992 addslashes($this->getRawTemplateData())
995 // This loop does remove the backslashes (\) in PHP parameters
996 while (strpos($eval, $this->codeBegin) !== false) {
997 // Get left part before "<?"
998 $evalLeft = substr($eval, 0, strpos($eval, $this->codeBegin));
1000 // Get all from right of "<?"
1001 $evalRight = substr($eval, (strpos($eval, $this->codeBegin) + 5));
1003 // Cut middle part out and remove escapes
1004 $evalMiddle = trim(substr($evalRight, 0, strpos($evalRight, $this->codeEnd)));
1005 $evalMiddle = stripslashes($evalMiddle);
1007 // Remove the middle part from right one
1008 $evalRight = substr($evalRight, (strpos($evalRight, $this->codeEnd) + 2));
1010 // And put all together
1011 $eval = sprintf("%s<%%php %s %%>%s", $evalLeft, $evalMiddle, $evalRight);
1014 // Prepare PHP code for eval() command
1015 $eval = str_replace(
1024 // Run the constructed command. This will "compile" all variables in
1027 // Goes something wrong?
1028 if ((!isset($result)) || (empty($result))) {
1029 // Output eval command
1030 $this->debugOutput(sprintf("Failed eval() code: <pre>%s</pre>", $this->markupCode($eval, true)), true);
1032 // Output backtrace here
1033 $this->debugBackTrace();
1036 // Set raw template data
1037 $this->setRawTemplateData($result);
1041 // Final variable assignment
1042 $this->finalizeVariableCompilation();
1044 // Set the new content
1045 $this->setCompiledData($this->getRawTemplateData());
1049 * Compile all required templates into the current loaded one
1052 * @throws UnexpectedTemplateTypeException If the template type is
1054 * @throws InvalidArrayCountException If an unexpected array
1055 * count has been found
1057 public function compileTemplate () {
1058 // We will only work with template type "code" from configuration
1059 if ($this->getTemplateType() != $this->getConfigInstance()->readConfig('code_template_type')) {
1061 throw new UnexpectedTemplateTypeException(array($this, $this->getTemplateType(), $this->getConfigInstance()->readConfig('code_template_type')), self::EXCEPTION_TEMPLATE_TYPE_IS_UNEXPECTED);
1064 // Get the raw data.
1065 $rawData = $this->getRawTemplateData();
1067 // Remove double spaces and trim leading/trailing spaces
1068 $rawData = trim(str_replace(' ', ' ', $rawData));
1070 // Search for raw variables
1071 $this->extractVariablesFromRawData($rawData);
1073 // Search for code-tags which are {? ?}
1074 preg_match_all($this->regExpCodeTags, $rawData, $templateMatches);
1076 // Analyze the matches array
1077 if ((is_array($templateMatches)) && (count($templateMatches) == 4) && (count($templateMatches[0]) > 0)) {
1078 // Entries are found:
1080 // The main analysis
1081 $this->analyzeTemplate($templateMatches);
1083 // Compile raw template data
1084 $this->compileRawTemplateData($templateMatches);
1086 // Are there some raw templates left for loading?
1087 $this->loadExtraRawTemplates();
1089 // Are some raw templates found and loaded?
1090 if (count($this->rawTemplates) > 0) {
1092 // Insert all raw templates
1093 $this->insertRawTemplates();
1095 // Remove the raw template content as well
1096 $this->setRawTemplateData('');
1100 } // END - if($templateMatches ...
1104 * A old deprecated method
1108 * @see BaseTemplateEngine::transferToResponse
1110 public function output () {
1111 // Check which type of template we have
1112 switch ($this->getTemplateType()) {
1113 case 'html': // Raw HTML templates can be send to the output buffer
1115 $this->getWebOutputInstance()->output($this->getCompiledData());
1118 default: // Unknown type found
1119 // Construct message
1120 $msg = sprintf("[%s->%s] Unknown/unsupported template type <span class=\"data\">%s</span> detected.",
1121 $this->__toString(),
1123 $this->getTemplateType()
1126 // Write the problem to the world...
1127 $this->debugOutput($msg);
1133 * Loads a given view helper (by name)
1135 * @param $helperName The helper's name
1138 protected function loadViewHelper ($helperName) {
1139 // Make first character upper case, rest low
1140 $helperName = $this->convertToClassName($helperName);
1142 // Is this view helper loaded?
1143 if (!isset($this->helpers[$helperName])) {
1144 // Create a class name
1145 $className = "{$helperName}ViewHelper";
1147 // Generate new instance
1148 $this->helpers[$helperName] = ObjectFactory::createObjectByName($className);
1151 // Return the requested instance
1152 return $this->helpers[$helperName];
1156 * Assigns the last loaded raw template content with a given variable
1158 * @param $templateName Name of the template we want to assign
1159 * @param $variableName Name of the variable we want to assign
1162 public function assignTemplateWithVariable ($templateName, $variableName) {
1163 // Get the content from last loaded raw template
1164 $content = $this->getRawTemplateData();
1166 // Assign the variable
1167 $this->assignVariable($variableName, $content);
1169 // Purge raw content
1170 $this->setRawTemplateData('');
1174 * Transfers the content of this template engine to a given response instance
1176 * @param $responseInstance An instance of a response class
1179 public function transferToResponse (Responseable $responseInstance) {
1180 // Get the content and set it in response class
1181 $responseInstance->writeToBody($this->getCompiledData());
1185 * Assigns all the application data with template variables
1187 * @param $appInstance A manageable application instance
1190 public function assignApplicationData (ManageableApplication $appInstance) {
1191 // Get long name and assign it
1192 $this->assignVariable('app_full_name' , $appInstance->getAppName());
1194 // Get short name and assign it
1195 $this->assignVariable('app_short_name', $appInstance->getAppShortName());
1197 // Get version number and assign it
1198 $this->assignVariable('app_version' , $appInstance->getAppVersion());
1200 // Assign extra application-depending data
1201 $appInstance->assignExtraTemplateData($this);
1205 * "Compiles" a variable by replacing {?var?} with it's content
1207 * @param $rawCode Raw code to compile
1208 * @return $rawCode Compile code with inserted variable value
1210 public function compileRawCode ($rawCode) {
1211 // Find the variables
1212 //* DEBUG: */ echo "rawCode=<pre>".htmlentities($rawCode)."</pre>\n";
1213 preg_match_all($this->regExpVarValue, $rawCode, $varMatches);
1215 // Compile all variables
1216 //* DEBUG: */ echo "<pre>".print_r($varMatches, true)."</pre>";
1217 foreach ($varMatches[0] as $match) {
1218 // Add variable tags around it
1219 $varCode = '{?' . $match . '?}';
1221 // Is the variable found in code? (safes some calls)
1222 if (strpos($rawCode, $varCode) !== false) {
1223 // Replace the variable with it's value, if found
1224 //* DEBUG: */ echo __METHOD__.": match=".$match."<br />\n";
1225 $rawCode = str_replace($varCode, $this->readVariable($match), $rawCode);
1229 // Return the compiled data
1234 * Getter for variable group array
1236 * @return $vargroups All variable groups
1238 public final function getVariableGroups () {
1239 return $this->varGroups;
1243 * Renames a variable in code and in stack
1245 * @param $oldName Old name of variable
1246 * @param $newName New name of variable
1249 public function renameVariable ($oldName, $newName) {
1250 //* DEBUG: */ echo __METHOD__.": oldName={$oldName}, newName={$newName}<br />\n";
1251 // Get raw template code
1252 $rawData = $this->getRawTemplateData();
1255 $rawData = str_replace($oldName, $newName, $rawData);
1257 // Set the code back
1258 $this->setRawTemplateData($rawData);
1262 * Renders the given XML content
1264 * @param $content Valid XML content or if not set the current loaded raw content
1266 * @throws XmlParserException If an XML error was found
1268 public final function renderXmlContent ($content = null) {
1269 // Is the content set?
1270 if (is_null($content)) {
1271 // Get current content
1272 $content = $this->getRawTemplateData();
1275 // Convert all to UTF8
1276 if (function_exists('recode')) {
1277 $content = recode("html..utf8", $content);
1279 // @TODO We need to find a fallback solution here
1282 // Get an XML parser
1283 $xmlParser = xml_parser_create();
1285 // Force case-folding to on
1286 xml_parser_set_option($xmlParser, XML_OPTION_CASE_FOLDING, true);
1289 xml_set_object($xmlParser, $this);
1291 // Set handler call-backs
1292 xml_set_element_handler($xmlParser, 'startElement', 'endElement');
1293 xml_set_character_data_handler($xmlParser, 'characterHandler');
1295 // Now parse the XML tree
1296 if (!xml_parse($xmlParser, $content)) {
1297 // Error found in XML!
1298 //die('<pre>'.htmlentities($content).'</pre>');
1299 throw new XmlParserException(array($this, $xmlParser), BaseHelper::EXCEPTION_XML_PARSER_ERROR);
1303 xml_parser_free($xmlParser);