From fc170fca1103d68a4b1ae31cbfb4a9c4daf64105 Mon Sep 17 00:00:00 2001
From: Justin Hileman <justin@justinhileman.info>
Date: Mon, 26 Apr 2010 18:58:58 -0400
Subject: [PATCH 1/2] Add inverted section.

---
 Mustache.php                                  | 35 +++++++++++++------
 examples/inverted_section/InvertedSection.php |  5 +++
 .../inverted_section.mustache                 |  2 ++
 .../inverted_section/inverted_section.txt     |  1 +
 4 files changed, 32 insertions(+), 11 deletions(-)
 create mode 100644 examples/inverted_section/InvertedSection.php
 create mode 100644 examples/inverted_section/inverted_section.mustache
 create mode 100644 examples/inverted_section/inverted_section.txt

diff --git a/Mustache.php b/Mustache.php
index d8d42f6..1b53c39 100644
--- a/Mustache.php
+++ b/Mustache.php
@@ -106,7 +106,7 @@ class Mustache {
 	}
 
 	/**
-	 * Render boolean and enumerable sections.
+	 * Render boolean, enumerable and inverted sections.
 	 *
 	 * @access protected
 	 * @param string $template
@@ -120,23 +120,36 @@ 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, $context);
-			if (is_array($val)) {
-				foreach ($val as $local_context) {
-					$replace .= $this->_render($content, $this->getContext($context, $local_context));
-				}
-			} else if ($val) {
-				$replace .= $content;
+			switch($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, $local_context));
+						}
+					} else if ($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 '';
 	}
 
diff --git a/examples/inverted_section/InvertedSection.php b/examples/inverted_section/InvertedSection.php
new file mode 100644
index 0000000..18eeb86
--- /dev/null
+++ b/examples/inverted_section/InvertedSection.php
@@ -0,0 +1,5 @@
+<?php
+
+class InvertedSection extends Mustache {
+	public $repo = array();
+}
\ No newline at end of file
diff --git a/examples/inverted_section/inverted_section.mustache b/examples/inverted_section/inverted_section.mustache
new file mode 100644
index 0000000..bee60ff
--- /dev/null
+++ b/examples/inverted_section/inverted_section.mustache
@@ -0,0 +1,2 @@
+{{#repo}}<b>{{name}}</b>{{/repo}}
+{{^repo}}No repos :({{/repo}}
\ No newline at end of file
diff --git a/examples/inverted_section/inverted_section.txt b/examples/inverted_section/inverted_section.txt
new file mode 100644
index 0000000..2b9ed3f
--- /dev/null
+++ b/examples/inverted_section/inverted_section.txt
@@ -0,0 +1 @@
+No repos :(
\ No newline at end of file

From 57a6aafff1ebe15490a1c257fe84c0e6d9499cc0 Mon Sep 17 00:00:00 2001
From: Justin Hileman <justin@justinhileman.info>
Date: Mon, 26 Apr 2010 19:01:57 -0400
Subject: [PATCH 2/2] Fixed complex example to use inverted sections rather
 than fancy ruby-ish context swizzling (which never worked in PHP anyway).

---
 README.markdown                   | 1 -
 examples/complex/complex.mustache | 4 ++--
 examples/complex/complex.php      | 5 -----
 3 files changed, 2 insertions(+), 8 deletions(-)

diff --git a/README.markdown b/README.markdown
index bc50bf5..0634a0f 100644
--- a/README.markdown
+++ b/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.
 
 
diff --git a/examples/complex/complex.mustache b/examples/complex/complex.mustache
index f3d8fea..4bf1687 100644
--- a/examples/complex/complex.mustache
+++ b/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}}
diff --git a/examples/complex/complex.php b/examples/complex/complex.php
index ca32ed7..ea55418 100644
--- a/examples/complex/complex.php
+++ b/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());
 	}