Updates

ETB-API/venv/lib/python3.12/site-packages/django_extensions/validators.py

@@ -0,0 +1,124 @@
+# -*- coding: utf-8 -*-
+import unicodedata
+import binascii
+
+from django.core.exceptions import ValidationError
+from django.utils.deconstruct import deconstructible
+from django.utils.encoding import force_str
+from django.utils.translation import gettext_lazy as _
+
+
+@deconstructible
+class NoControlCharactersValidator:
+    message = _("Control Characters like new lines or tabs are not allowed.")
+    code = "no_control_characters"
+    whitelist = None
+
+    def __init__(self, message=None, code=None, whitelist=None):
+        if message:
+            self.message = message
+        if code:
+            self.code = code
+        if whitelist:
+            self.whitelist = whitelist
+
+    def __call__(self, value):
+        value = force_str(value)
+        whitelist = self.whitelist
+        category = unicodedata.category
+        for character in value:
+            if whitelist and character in whitelist:
+                continue
+            if category(character)[0] == "C":
+                params = {"value": value, "whitelist": whitelist}
+                raise ValidationError(self.message, code=self.code, params=params)
+
+    def __eq__(self, other):
+        return (
+            isinstance(other, NoControlCharactersValidator)
+            and (self.whitelist == other.whitelist)
+            and (self.message == other.message)
+            and (self.code == other.code)
+        )
+
+
+@deconstructible
+class NoWhitespaceValidator:
+    message = _("Leading and Trailing whitespaces are not allowed.")
+    code = "no_whitespace"
+
+    def __init__(self, message=None, code=None, whitelist=None):
+        if message:
+            self.message = message
+        if code:
+            self.code = code
+
+    def __call__(self, value):
+        value = force_str(value)
+        if value != value.strip():
+            params = {"value": value}
+            raise ValidationError(self.message, code=self.code, params=params)
+
+    def __eq__(self, other):
+        return (
+            isinstance(other, NoWhitespaceValidator)
+            and (self.message == other.message)
+            and (self.code == other.code)
+        )
+
+
+@deconstructible
+class HexValidator:
+    messages = {
+        "invalid": _("Only a hex string is allowed."),
+        "length": _("Invalid length. Must be %(length)d characters."),
+        "min_length": _("Ensure that there are more than %(min)s characters."),
+        "max_length": _("Ensure that there are no more than %(max)s characters."),
+    }
+    code = "hex_only"
+
+    def __init__(
+        self, length=None, min_length=None, max_length=None, message=None, code=None
+    ):
+        self.length = length
+        self.min_length = min_length
+        self.max_length = max_length
+        if message:
+            self.message = message
+        else:
+            self.message = self.messages["invalid"]
+        if code:
+            self.code = code
+
+    def __call__(self, value):
+        value = force_str(value)
+        if self.length and len(value) != self.length:
+            raise ValidationError(
+                self.messages["length"],
+                code="hex_only_length",
+                params={"length": self.length},
+            )
+        if self.min_length and len(value) < self.min_length:
+            raise ValidationError(
+                self.messages["min_length"],
+                code="hex_only_min_length",
+                params={"min": self.min_length},
+            )
+        if self.max_length and len(value) > self.max_length:
+            raise ValidationError(
+                self.messages["max_length"],
+                code="hex_only_max_length",
+                params={"max": self.max_length},
+            )
+
+        try:
+            binascii.unhexlify(value)
+        except (TypeError, binascii.Error):
+            raise ValidationError(self.messages["invalid"], code="hex_only")
+
+    def __eq__(self, other):
+        return (
+            isinstance(other, HexValidator)
+            and (self.message == other.message)
+            and (self.code == other.code)
+        )