Commit 0b4a72fd77f74e5a9f6885179febe601156df617
need unar command to do something.
But if we haven't installed it, the error message
told us nothing valuable as:
"OSError: [Errno 2] No such file or directory"
This patch will impove the error message.
Signed-off-by: Chen Hanxiao <chenhanxiao@xxxxxxxxxxxxxx>
---
v2: use find_executable function and impove error message.
virtconv/formats.py | 9 +++++++++
1 file changed, 9 insertions(+)
diff --git a/virtconv/formats.py b/virtconv/formats.py
index 5eb4356..0663190 100644
--- a/virtconv/formats.py
+++ b/virtconv/formats.py
@@ -132,6 +132,15 @@ def _find_input(input_file, parser, print_cb):
prefix="virt-convert-tmp", dir=basedir)
base = os.path.basename(input_file)
+
+ # check if 'unar' command existed.
+ if not find_executable("unar"):
+ raise RuntimeError(_("%s appears to be an archive, "
+ "but 'unar' is not installed. "
+ "Please either install 'unar', or extract the archive "
+ "yourself and point virt-convert at "
+ "the extracted directory.") % base)
+
cmd = ["unar", "-o", tempdir, base]
print_cb(_("%s appears to be an archive, running: %s") %
(base, " ".join(cmd)))
--
1.8.5.3
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