From 484e584f00fce5456778d2d110d3f9b1c3b88097 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Ozan=20=C3=87a=C4=9Flayan?= <ozan@pardus.org.tr>
Date: Wed, 8 Jun 2011 11:21:36 +0000
Subject: [PATCH] util: add search_executable() to find search for an
 executable in PATH

---
 pisi/util.py | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/pisi/util.py b/pisi/util.py
index 82cbf6bf..cd324f6c 100644
--- a/pisi/util.py
+++ b/pisi/util.py
@@ -175,6 +175,14 @@ def format_by_columns(strings, sep_width=2):
 # Process Releated Functions #
 ##############################
 
+def search_executable(executable):
+    """Search for the executable in user's paths and return it."""
+    for _path in os.environ["PATH"].split(":"):
+        full_path = os.path.join(_path, executable)
+        if os.path.exists(full_path) and os.access(full_path, os.X_OK):
+            return full_path
+    return None
+
 def run_batch(cmd):
     """Run command and report return value and output."""
     ctx.ui.info(_('Running ') + cmd, verbose=True)