Add module.utils.which

1 files changed, 20 insertions, 0 deletions

diff --git a/module/utils.py b/module/utils.py
index 8748b7693..895768cba 100644
--- a/module/utils.py
+++ b/module/utils.py
@@ -195,6 +195,26 @@ def html_unescape(text):
     """Removes HTML or XML character references and entities from a text string"""
     return re.sub("&#?\w+;", fixup, text)
 
+def which(program):
+    """Works exactly like the unix command which
+
+    Courtesy of http://stackoverflow.com/a/377028/675646"""
+    def is_exe(fpath):
+        return os.path.isfile(fpath) and os.access(fpath, os.X_OK)
+
+    fpath, fname = os.path.split(program)
+    if fpath:
+        if is_exe(program):
+            return program
+    else:
+        for path in os.environ["PATH"].split(os.pathsep):
+            path = path.strip('"')
+            exe_file = os.path.join(path, program)
+            if is_exe(exe_file):
+                return exe_file
+
+    return None
+
 if __name__ == "__main__":
     print freeSpace(".")