validate-input: add python input validator

Signed-off-by: Masatake YAMATO <[email protected]>

Author: masatake

Units/parser-python.r/typehint.d/validator

@@ -0,0 +1 @@
+python

misc/validators/validator-python

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+# -*- sh -*-
+# validator-python --- validating Python input files
+#
+#  Copyright (c) 2025, Masatake YAMATO
+#
+# This program is free software; you can redistribute it and/or
+# modify it under the terms of the GNU General Public License
+# as published by the Free Software Foundation; either version 2
+# of the License, or (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program; if not, write to the Free Software
+# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301,
+# USA.
+PYTHON=${PYTHON:-python}
+action=$1
+input=$2
+
+case "$action" in
+    is_runnable)
+	type ${PYTHON} > /dev/null 2>&1
+	exit $?
+	;;
+    validate)
+	${PYTHON} -m py_compile "$input"
+	s=$?
+	d=$(dirname "$input")
+	b=$(basename "$input" .py)
+	rm $d/__pycache__/$b*pyc
+	rmdir $d/__pycache__
+	exit $s
+	;;
+esac