Move touch.py from voussoirkit to voussoir/cmd.

touch.py

@@ -0,0 +1,34 @@
+'''
+Create the file, or update the last modified timestamp.
+'''
+import argparse
+import os
+import sys
+
+from voussoirkit import pipeable
+from voussoirkit import winglob
+
+def touch_argparse(args):
+    patterns = [pattern for arg in args.patterns for pattern in pipeable.input(arg)]
+    for pattern in patterns:
+        filenames = winglob.glob(pattern)
+
+        if len(filenames) == 0 and not winglob.is_glob(pattern):
+            open(pattern, 'a').close()
+            print(pattern)
+
+        for filename in filenames:
+            os.utime(filename)
+            print(filename)
+
+def main(argv):
+    parser = argparse.ArgumentParser(description=__doc__)
+
+    parser.add_argument('patterns', nargs='+')
+    parser.set_defaults(func=touch_argparse)
+
+    args = parser.parse_args(argv)
+    return args.func(args)
+
+if __name__ == '__main__':
+    raise SystemExit(main(sys.argv[1:]))