[libhttpseverywhere] context: do not load srcdir data per default

[Daniel Brendle <elbren src gnome org>]

commit 6161e8ee93e50bfb48ca8ffa3bf1246f279b5961
Author: grindhold <grindhold gmx net>
Date:   Fri Jan 19 21:20:12 2018 +0100

    context: do not load srcdir data per default
    
    only load the rulesets from $sourcedir/data/default.rulesets when
    we are executing httpseverywhere_test from a folder that ends with
    "build/test", which is the folder that meson creates for our test
    executable. this will prevent loading random crap data in production

 src/context.vala |    7 ++++++-
 1 files changed, 6 insertions(+), 1 deletions(-)
---
diff --git a/src/context.vala b/src/context.vala
index f54d8ab..f082cfc 100644
--- a/src/context.vala
+++ b/src/context.vala
@@ -104,7 +104,12 @@ namespace HTTPSEverywhere {
                 datapaths.add(Path.build_filename(dp, "libhttpseverywhere", rulesets_file));
 
             // local rules in repo dir to test data without installation
-            datapaths.add(Path.build_filename(Environment.get_current_dir(), "..", "data", rulesets_file));
+            // only works if the test executable is loaded from the build/test folder
+            // that meson generates
+            if (Environment.get_current_dir().has_suffix("build/test")) {
+                datapaths.add(Path.build_filename(Environment.get_current_dir(),
+                                                  "..", "..", "data", rulesets_file));
+            }
 
             parser = new Json.Parser();
             bool success = false;