Merge pull request #1 from iml1111/master

Allow regex pattern for validation.

Author: Ge0rg3

.gitignore

@@ -3,4 +3,5 @@ build/
 dist/
 __pycache__/
 *.egg-info
-*.pyc
+*.pyc
+test.py

README.md

@@ -63,7 +63,8 @@ All parameters can have default values, and automatic validation.
 * min_int: int, Specifies the minimum number for an int input
 * max_int: int, Specifies the maximum number for an int input
 * whitelist: str, A string containing allowed characters for the value
-* blacklist: str, A string containing forbidden characters for the value  
+* blacklist: str, A string containing forbidden characters for the value
+* pattern: str, A regex pattern to test for string matches
 
 `File` has the following options:
 * content_types: array of strings, an array of allowed content types.

flask_parameter_validation/parameter_types/parameter.py

@@ -2,6 +2,7 @@
     Base Parameter class.
     Should only be used as child class for othe params.
 """
+import re
 
 
 class ValidationError(Exception):
@@ -21,7 +22,8 @@ def __init__(
         min_int=None,  # int: min number (if val is int)
         max_int=None,  # int: max number (if val is int)
         whitelist=None,  # str: character whitelist
-        blacklist=None  # str: character blacklist
+        blacklist=None,  # str: character blacklist
+        pattern=None,  # str: regexp pattern
     ):
         self.default = default
         self.min_length = min_length
@@ -30,6 +32,7 @@ def __init__(
         self.max_int = max_int
         self.whitelist = whitelist
         self.blacklist = blacklist
+        self.pattern = pattern
 
     # Validator
     def validate(self, values):
@@ -77,4 +80,12 @@ def validate(self, values):
                     raise ValidationError(
                         f"must be smaller than {self.max_int}."
                     )
+
+            # Regexp
+            if self.pattern is not None:
+                if not re.match(self.pattern, value):
+                    raise ValidationError(
+                        f"pattern does not match: {self.pattern}."
+                    )
+
             return True

setup.py

@@ -11,11 +11,11 @@
 
 setup(
     name='Flask-Parameter-Validation',
-    version='1.0.23',
+    version='1.0.24',
     url='https://github.com/Ge0rg3/Flask-Parameter-Validation',
     license='MIT',
     author='George Omnet',
-    author_email='[email protected]',
+    author_email='[email protected]',
     description='Get and validate all Flask input parameters with ease.',
     long_description=long_description,
     long_description_content_type='text/markdown',