From 833f13ca5c2bc5a96f82388b22cf1ca5a445c07b Mon Sep 17 00:00:00 2001
From: Silvio <silvio@devlet.com.br>
Date: Thu, 1 Jul 2010 10:54:58 -0300
Subject: Adding a non-working IsisSubfieldIterator

---
 classes/IsisSubfieldIterator.php | 51 ++++++++++++++++++++++++++++++++++++++++
 1 file changed, 51 insertions(+)
 create mode 100644 classes/IsisSubfieldIterator.php

diff --git a/classes/IsisSubfieldIterator.php b/classes/IsisSubfieldIterator.php
new file mode 100644
index 0000000..ad1851d
--- /dev/null
+++ b/classes/IsisSubfieldIterator.php
@@ -0,0 +1,51 @@
+<?php
+
+// TODO: not working
+class IsisSubfieldIterator implements Iterator
+{
+    private $position = 0;
+    private $class;
+    private $field;
+    private $subfields;
+    private $keys;
+
+    public function __construct($class, $field)
+    {
+      $this->class     = $class;
+      $this->field     = $field;
+      $this->subfields = $class->getSubfields($field);
+      $this->keys      = array_values($this->subfields);
+      print_r($field);
+    }
+
+    function subfield()
+    {
+      return $this->subfields[$this->key()];
+    }
+
+    function rewind()
+    {
+      $this->position = 0;
+    }
+
+    function current()
+    {
+      $value = $this->class->getSubfield($this->field, $this->subfield());
+      return $this->class->explodeValue($value);
+    }
+
+    function key()
+    {
+      return $this->keys[$this->position];
+    }
+
+    function next()
+    {
+      ++$this->position;
+    }
+
+    function valid()
+    {
+      return isset($this->keys[$this->position]) && ($this->current() != null);
+    }
+}
-- 
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