Ported file archiver from fs-uae-wrapper

e_uae_wrapper/path.py

@@ -0,0 +1,22 @@
+"""
+Misc utilities
+"""
+import os
+
+
+def which(executables):
+    """
+    Check if there selected archiver is available in the system and place it
+    to the archiver attribute
+    """
+
+    if not isinstance(executables, list):
+        executables = [executables]
+
+    for fname in executables:
+        for path in os.environ["PATH"].split(os.pathsep):
+            path = os.path.join(path.strip('"'), fname)
+            if os.path.isfile(path) and os.access(path, os.X_OK):
+                return fname
+
+    return None