Initial commit

venv/lib/python3.8/site-packages/pylint/lint/utils.py

@@ -0,0 +1,76 @@
+# Licensed under the GPL: https://www.gnu.org/licenses/old-licenses/gpl-2.0.html
+# For details: https://github.com/PyCQA/pylint/blob/master/COPYING
+
+import contextlib
+import sys
+
+from pylint.utils import utils
+
+
+class ArgumentPreprocessingError(Exception):
+    """Raised if an error occurs during argument preprocessing."""
+
+
+def preprocess_options(args, search_for):
+    """look for some options (keys of <search_for>) which have to be processed
+    before others
+
+    values of <search_for> are callback functions to call when the option is
+    found
+    """
+    i = 0
+    while i < len(args):
+        arg = args[i]
+        if arg.startswith("--"):
+            try:
+                option, val = arg[2:].split("=", 1)
+            except ValueError:
+                option, val = arg[2:], None
+            try:
+                cb, takearg = search_for[option]
+            except KeyError:
+                i += 1
+            else:
+                del args[i]
+                if takearg and val is None:
+                    if i >= len(args) or args[i].startswith("-"):
+                        msg = "Option %s expects a value" % option
+                        raise ArgumentPreprocessingError(msg)
+                    val = args[i]
+                    del args[i]
+                elif not takearg and val is not None:
+                    msg = "Option %s doesn't expects a value" % option
+                    raise ArgumentPreprocessingError(msg)
+                cb(option, val)
+        else:
+            i += 1
+
+
+def _patch_sys_path(args):
+    original = list(sys.path)
+    changes = []
+    seen = set()
+    for arg in args:
+        path = utils.get_python_path(arg)
+        if path not in seen:
+            changes.append(path)
+            seen.add(path)
+
+    sys.path[:] = changes + sys.path
+    return original
+
+
+@contextlib.contextmanager
+def fix_import_path(args):
+    """Prepare sys.path for running the linter checks.
+
+    Within this context, each of the given arguments is importable.
+    Paths are added to sys.path in corresponding order to the arguments.
+    We avoid adding duplicate directories to sys.path.
+    `sys.path` is reset to its original value upon exiting this context.
+    """
+    original = _patch_sys_path(args)
+    try:
+        yield
+    finally:
+        sys.path[:] = original