1 files changed, 97 insertions, 3 deletions
diff --git a/app/class/form.class.php b/app/class/form.class.php
index ffee3d7..502e348 100644
--- a/app/class/form.class.php
+++ b/app/class/form.class.php
@@ -14,9 +14,15 @@ class Form
         $this->numbFields = array();
         $this->enumFields = array();
 
-        $this->errorlist   = array();
-        $this->warninglist = array();
-        $this->noticelist  = array();
+        $this->errorlist  = array();
+    }
+
+    /*
+     * Log an error
+     */
+    function logError($str)
+    {
+        $this->errorlist[] = $str;
     }
 
     /*
@@ -67,6 +73,94 @@ class Form
             'vals' => $values
         );
     }
+
+    /*
+     * Populate the form with input data from web page
+     */
+    function populate($input)
+    {
+        /* detect duplicate names */
+        $names = array();
+        foreach ($this->textFields as $fld)
+            $names[] = $fld['name'];
+        foreach ($this->numbFields as $fld)
+            $names[] = $fld['name'];
+        foreach ($this->enumFields as $fld)
+            $names[] = $fld['name'];
+
+        if (count(array_unique($names)) != count($names))
+        {
+            $this->logError("Internal error: Duplicate field names defined in form");
+            return false;
+        }
+
+        /* init text fields */
+        foreach ($this->textFields as $fld)
+        {
+            if (isset($input[$fld['name']]))
+                $this->$fld['name'] = htmlEntities($input[$fld['name']], ENT_QUOTES);
+
+            else if ($fld['req'])
+                $this->logError($fld['name'] . " is required");
+        }
+
+        /* init numeric fields */
+        foreach ($this->numbFields as $fld)
+        {
+            if (isset($input[$fld['name']]))
+            {
+                if (!is_numeric($input[$fld['name']]))
+                {
+                    $this->logError($fld['name'] . " must be numeric");
+                    continue;
+                }
+
+                if ($fld['int'] && (floor($input[$fld['name']]) != $input[$fld['name']]))
+                {
+                    $this->logError($fld['name'] . " must be an integer");
+                    continue;
+                }
+
+                if (!is_null($fld['min']) && ($input[$fld['name']] < $fld['min']))
+                {
+                    $this->logError($fld['name'] . " must be no less than " . $fld['min']);
+                    continue;
+                }
+
+                if (!is_null($fld['max']) && ($input[$fld['name']] > $fld['max']))
+                {
+                    $this->logError($fld['name'] . " must be no more than " . $fld['max']);
+                    continue;
+                }
+
+                $this->$fld['name'] = $input[$fld['name']];
+            }
+
+            else if ($fld['req'])
+                $this->logError($fld['name'] . " is required");
+        }
+
+        /* init enum fields */
+        foreach ($this->enumFields as $fld)
+        {
+            if (isset($input[$fld['name']]))
+            {
+                if (array_search($input[$fld['name']], $fld['vals']) === false)
+                {
+                    $this->logError($fld['name'] . " is not an appropriate value");
+                    continue;
+                }
+
+                $this->$fld['name'] = $input[$fld['name']];
+            }
+
+            else if ($fld['req'])
+                $this->logError($fld['name'] . " is required");
+        }
+
+        /* return */
+        return count($this->errorlist) == 0;
+    }
 }
 
 ?>