From: Nirbheek Chauhan <nirbheek@centricular.com>
Date: Mon, 15 Apr 2019 10:02:36 +0000 (+0530)
Subject: gst-uninstalled: De-dedup before prepending to an env var
X-Git-Tag: 1.19.3~481^2~232
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=c786776f270581c2853abffd20d0debc43ef1544;p=platform%2Fupstream%2Fgstreamer.git

gst-uninstalled: De-dedup before prepending to an env var

Helps us avoid breaching the maximum length limit for env var values
on Windows.
---

diff --git a/gst-uninstalled.py b/gst-uninstalled.py
index 982988a..03b9416 100755
--- a/gst-uninstalled.py
+++ b/gst-uninstalled.py
@@ -44,7 +44,12 @@ def stringify(o):
     raise AssertionError('Object {!r} must be a string or a list'.format(o))
 
 def prepend_env_var(env, var, value):
-    env[var] = os.pathsep + value + os.pathsep + env.get(var, "")
+    env_val = env.get(var, '')
+    val = os.pathsep + value + os.pathsep
+    # Don't add the same value twice
+    if val in env_val or env_val.startswith(value + os.pathsep):
+        return
+    env[var] = val + env_val
     env[var] = env[var].replace(os.pathsep + os.pathsep, os.pathsep).strip(os.pathsep)