wrapper for shell commands

1 files changed, 28 insertions, 0 deletions

diff --git a/it.class b/it.class
index 459691e..c3841d3 100644
--- a/it.class
+++ b/it.class
@@ -273,5 +273,33 @@ function filter_keys($array, $keys)
 	return $result;
 }
 
+
+/**
+ * Construct shell command, log it, execute it and return output as string.
+ * @param varargs: scalars for cmd and arguments, assoc arrays to specify opts and opt values
+ * @return output of command. shell errors not detectable, see error_log in /www/server/logs
+ */
+function exec(/* ... */)
+{
+	$args = func_get_args();
+	$parts = array();
+
+	foreach ($args as $arg)
+	{
+		foreach ((array)$arg as $key => $val)
+		{
+			if (it::match('^-', $val))
+				it::fatal("leading - in value");
+			else
+				$parts[] = (is_int($key) ? "" : escapeshellarg($key) . " ") . escapeshellarg($val);
+		}
+	}
+
+	$cmd = join(" ", $parts);
+	it::log('exec', $cmd);
+
+	return (string)shell_exec($cmd);
+}
+
 }
 ?>