Merge branch 'f-file-handling' into 'dev'

Add two file handling functions

See merge request caosdb/caosdb-advanced-user-tools!43

src/caosadvancedtools/utils.py

@@ -24,9 +24,12 @@
 
 import logging
 import os
+import pathlib
 
 import caosdb as db
 
+logger = logging.getLogger(__name__)
+
 
 def set_log_level(level):
     logger = logging.getLogger(__name__)
@@ -110,6 +113,50 @@ def assure_absolute_path_in_glob(glob, prefix):
     return glob
 
 
+def check_win_path(path, filename=None):
+    """
+    check whether '/' are in the path but no '\'.
+
+    If that is the case, it is likely, that the path is not a Windows path.
+
+    Parameters:
+    path: path to be checked
+    filename: if the path is located in a file, this parameter can be used to
+              direct the user to the file where the path is located.
+    """
+
+    if r"\\" not in path and "/" in path:
+        if filename:
+            msg = "In file\n{}\nthe ".format(filename)
+        else:
+            msg = "The "
+        msg += ("path\n{}\ndoes not look like "
+                "a Windows path.".format(path))
+        logger.warning(msg, extra={'identifier': str(path),
+                                   'category': "inconsistency"})
+
+        return False
+
+    return True
+
+
+def treat_win_path(path, relative_to, filename=None):
+    """
+    check win path and convert it to posix and make it absolute.
+    Parameters:
+    path: windows path as string
+    relative_to: unix path as string
+    filename: if the path is located in a file, this parameter can be used to
+              direct the user to the file where the path is located.
+    """
+    check_win_path(path, filename=filename)
+    path = pathlib.PureWindowsPath(path)
+    path = path.as_posix()
+    path = assure_absolute_path_in_glob(str(path), prefix=relative_to)
+
+    return path
+
+
 def return_field_or_property(value, prop=None):
     """
     returns value itself of a property.

unittests/test_utils.py

@@ -23,7 +23,8 @@
 import unittest
 
 from caosadvancedtools.utils import (assure_absolute_path_in_glob,
-                                     string_to_person)
+                                     check_win_path, string_to_person,
+                                     treat_win_path)
 
 
 class Assure_absoluteTest(unittest.TestCase):
@@ -55,3 +56,12 @@ class PersonParserTest(unittest.TestCase):
         assert is_dhornung(rec)
         rec = string_to_person("Henrik tom Wörden (MPI)")
         assert not is_dhornung(rec)
+
+
+class PathTest(unittest.TestCase):
+    def test_win(self):
+        assert check_win_path(r"C:\hallo")
+        assert check_win_path(r"\hallo")
+        assert not check_win_path("/hallo")
+        self.assertEqual(treat_win_path(r"tag\hallo", "/lol"),
+                         "/lol/tag/hallo")