[elbe-devel] [PATCH] elbepack: hdimg: clarify glob match error

[Vasilij Strassheim]

If there is no match for a glob pattern, the error message does not show the
pattern that caused the error. This makes it unnecessary harder to debug the
issue.
Add args to the error message and clarify the error message for different
cases to make it easier to debug such issues.

Signed-off-by: Vasilij Strassheim <vasilij.strassheim at linutronix.de>
---
 elbepack/hdimg.py | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/elbepack/hdimg.py b/elbepack/hdimg.py
index faeea2c3..8e01daab 100644
--- a/elbepack/hdimg.py
+++ b/elbepack/hdimg.py
@@ -60,8 +60,10 @@ def mkfs_mtd(mtd, fslabel, target):
 
 def _glob_single(*args, **kwargs):
     matches = glob.glob(*args, **kwargs)
-    if len(matches) != 1:
-        raise ValueError('not exactly one match', matches)
+    if not matches:
+        raise ValueError('no match', args)
+    elif len(matches) != 1:
+        raise ValueError('not exactly one match', matches, args)
 
     return matches[0]
 
-- 
2.39.5