Merge branch 'feature/inverted-sections' into dev

Mustache.php

@@ -106,7 +106,7 @@ class Mustache {
 	}
 
 	/**
-	 * Render boolean and enumerable sections.
+	 * Render boolean, enumerable and inverted sections.
 	 *
 	 * @access protected
 	 * @param string $template
@@ -120,17 +120,28 @@ class Mustache {
 
 		$otag  = $this->prepareRegEx($this->otag);
 		$ctag  = $this->prepareRegEx($this->ctag);
-		$regex = '/' . $otag . '\\#(.+?)' . $ctag . '\\s*([\\s\\S]+?)' . $otag . '\\/\\1' . $ctag . '\\s*/m';
+		$regex = '/' . $otag . '(\\^|\\#)(.+?)' . $ctag . '\\s*([\\s\\S]+?)' . $otag . '\\/\\2' . $ctag . '\\s*/m';
 
 		$matches = array();
 		while (preg_match($regex, $template, $matches, PREG_OFFSET_CAPTURE)) {
 			$section  = $matches[0][0];
 			$offset   = $matches[0][1];
-			$tag_name = trim($matches[1][0]);
-			$content  = $matches[2][0];
+			$type     = $matches[1][0];
+			$tag_name = trim($matches[2][0]);
+			$content  = $matches[3][0];
 
 			$replace = '';
 			$val = $this->getVariable($tag_name, $context);
+			switch($type) {
+				// inverted section
+				case '^':
+					if (empty($val)) {
+						$replace .= $content;
+					}
+					break;
+
+				// regular section
+				case '#':
 					if (is_array($val)) {
 						foreach ($val as $local_context) {
 							$replace .= $this->_render($content, $this->getContext($context, $local_context));
@@ -138,6 +149,8 @@ class Mustache {
 					} else if ($val) {
 						$replace .= $content;
 					}
+					break;
+			}
 
 			$template = substr_replace($template, $replace, $offset, strlen($section));
 		}
@@ -293,7 +306,7 @@ class Mustache {
 
 		$otag  = $this->prepareRegEx($this->otag);
 		$ctag  = $this->prepareRegEx($this->ctag);
-		$this->tagRegEx = '/' . $otag . "(#|\/|=|!|>|\\{|&)?([^\/#]+?)\\1?" . $ctag . "+/";
+		$this->tagRegEx = '/' . $otag . "(#|\/|=|!|>|\\{|&)?([^\/#\^]+?)\\1?" . $ctag . "+/";
 		return '';
 	}
 

README.markdown

@@ -82,7 +82,6 @@ Known Issues
 ------------
 
  * Sections don't respect delimiter changes -- `delimiters` example currently fails with an "unclosed section" exception.
- * Since `complex` example emulates some fancy swizzling available in Ruby, it fails. Need to convert example to PHPisms (In PHP, Mustache class doesn't maintain current context stack -- available context is passed to methods via params).
  * Test coverage is incomplete.
 
 

examples/complex/complex.mustache

@@ -5,9 +5,9 @@
     {{#current}}
       <li><strong>{{name}}</strong></li>
     {{/current}}
-    {{#isLink}}
+    {{^current}}
       <li><a href="{{url}}">{{name}}</a></li>
-    {{/isLink}}
+    {{/current}}
   {{/item}}
   </ul>
 {{/notEmpty}}

examples/complex/complex.php

@@ -9,11 +9,6 @@ class Complex extends Mustache {
 		array('name' => 'blue', 'current' => false, 'url' => '#Blue'),
 	);
 	
-	public function isLink() {
-		// Exploit the fact that the current iteration item is at the top of the context stack.
-		return $this->getVariable('current', $this->context) != true;
-	}
-	
 	public function notEmpty() {
 		return !($this->isEmpty());
 	}

examples/inverted_section/InvertedSection.php

@@ -0,0 +1,5 @@
+<?php
+
+class InvertedSection extends Mustache {
+	public $repo = array();
+}

examples/inverted_section/inverted_section.mustache

@@ -0,0 +1,2 @@
+{{#repo}}<b>{{name}}</b>{{/repo}}
+{{^repo}}No repos :({{/repo}}

examples/inverted_section/inverted_section.txt

@@ -0,0 +1 @@
+No repos :(