[libgpiod][PATCH 13/14] bindings: python: fix directory validation in artifact script

[Vincent Fazio <vfazio@gmail.com>]

The PyPI artifact generation script had two issues with its directory
validation:

  * When validating the source directory, it erroneously tested whether
    output_dir was a directory instead of source_dir.
  * When validating the output directory, it only tested for writability
    (-w), which would allow an existing writable regular file to pass
    validation and only fail later when copying build artifacts.

Fix the source_dir check to inspect source_dir, and ensure output_dir
is verified to be a directory in addition to being writable.

Fixes: 72d2fa01 ("bindings: python: add script to generate sdist and wheels")
Signed-off-by: Vincent Fazio <vfazio@gmail.com>
---
 bindings/python/generate_pypi_artifacts.sh | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/bindings/python/generate_pypi_artifacts.sh b/bindings/python/generate_pypi_artifacts.sh
index 22dad9f..bc8aa05 100755
--- a/bindings/python/generate_pypi_artifacts.sh
+++ b/bindings/python/generate_pypi_artifacts.sh
@@ -58,13 +58,13 @@ while getopts :hv:o:s:cf value; do
 	esac
 done
 
-if [ -z "${source_dir}" ] || [ ! -d "${output_dir}" ]; then
+if [ -z "${source_dir}" ] || [ ! -d "${source_dir}" ]; then
 	printf "Invalid source directory %s.\n" "${source_dir}"
 	exit 1
 fi
 
-if [ -z "${output_dir}" ] || [ ! -w "${output_dir}" ]; then
-	printf "Output directory %s is not writable.\n" "${output_dir}"
+if [ -z "${output_dir}" ] || [ ! -d "${output_dir}" ] || [ ! -w "${output_dir}" ]; then
+	printf "Output directory %s is not writable directory.\n" "${output_dir}"
 	exit 1
 fi
 
-- 
2.43.0