Библиотека для cis, online, cms1

PHPTAL/Php/Attribute/I18N/Attributes.php

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+<?php
+
+require_once PHPTAL_DIR.'PHPTAL/Php/Attribute.php';
+
+// i18n:attributes
+//
+// This attribute will allow us to translate attributes of HTML tags, such 
+// as the alt attribute in the img tag. The i18n:attributes attribute 
+// specifies a list of attributes to be translated with optional message 
+// IDs? for each; if multiple attribute names are given, they must be 
+// separated by semi-colons. Message IDs? used in this context must not 
+// include whitespace.
+//
+// Note that the value of the particular attributes come either from the 
+// HTML attribute value itself or from the data inserted by tal:attributes.
+//
+// If an attibute is to be both computed using tal:attributes and translated, 
+// the translation service is passed the result of the TALES expression for 
+// that attribute.
+//
+// An example:
+//
+//     <img src="http://foo.com/logo" alt="Visit us"
+//              tal:attributes="alt here/greeting"
+//              i18n:attributes="alt"
+//              />
+//
+//
+// In this example, let tal:attributes set the value of the alt attribute to 
+// the text "Stop by for a visit!". This text will be passed to the 
+// translation service, which uses the result of language negotiation to 
+// translate "Stop by for a visit!" into the requested language. The example 
+// text in the template, "Visit us", will simply be discarded.
+//
+// Another example, with explicit message IDs:
+//
+//   <img src="../icons/uparrow.png" alt="Up"
+//        i18n:attributes="src up-arrow-icon; alt up-arrow-alttext"
+//   >
+//
+// Here, the message ID up-arrow-icon will be used to generate the link to 
+// an icon image file, and the message ID up-arrow-alttext will be used for 
+// the "alt" text.
+//
+
+/**
+ * @package phptal.php.attribute
+ */
+class PHPTAL_Php_Attribute_I18N_Attributes extends PHPTAL_Php_Attribute
+{
+    public function start()
+    {
+        // split attributes to translate
+        $expressions = $this->tag->generator->splitExpression($this->expression);
+        // foreach attribute
+        foreach ($expressions as $exp){
+            list($attribute, $key) = $this->parseSetExpression($exp);
+            //   if the translation key is specified 
+            if ($key != null){
+                // we use it and replace the tag attribute with the result of
+                // the translation
+                $key = str_replace('\'', '\\\'', $key);
+                $this->tag->attributes[$attribute] = $this->_getTranslationCode("'$key'");
+            } 
+            else if ($this->tag->isOverwrittenAttribute($attribute)){
+                $varn = $this->tag->getOverwrittenAttributeVarName($attribute);
+                $this->tag->attributes[$attribute] = $this->_getTranslationCode($varn);
+            }
+            // else if the attribute has a default value
+            else if ($this->tag->hasAttribute($attribute)){
+                // we use this default value as the translation key
+                $key = $this->tag->getAttribute($attribute);
+                $key = str_replace('\'', '\\\'', $key);
+                $this->tag->attributes[$attribute] = $this->_getTranslationCode("'$key'");
+            }
+            else {
+                // unable to translate the attribute
+                throw new PHPTAL_Exception("Unable to translate attribute $attribute");
+            }
+        }
+    }
+   
+    public function end()
+    {
+    }
+
+    private function _getTranslationCode($key)
+    {
+		$code = '<?php ';
+		if (preg_match_all('/\$\{(.*?)\}/', $key, $m)){
+			array_shift($m);
+			$m = array_shift($m);
+			foreach ($m as $name){
+				$code .= "\n".'$_translator->setVar(\''.$name.'\','.phptal_tale($name).');'; // allow more complex TAL expressions
+			}
+			$code .= "\n";
+		}
+
+        // notice the false boolean which indicate that the html is escaped
+        // elsewhere looks like an hack doesn't it ? :)
+		$result = $this->tag->generator->escapeCode(sprintf('$_translator->translate(%s, false)', $key));
+        $code .= 'echo '.$result.'?>';
+		return $code;
+    }
+}
+
+?>