https://github.com/znc-sistemas/xpath_validator

xpath_validator
https://github.com/znc-sistemas/xpath_validator

expression expression-evaluator expression-language expression-parser expressionengine python27 python3 validate validation validation-library validators xpath

Last synced: 2 months ago
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xpath_validator

• Host: GitHub
• URL: https://github.com/znc-sistemas/xpath_validator
• Owner: znc-sistemas
• License: mit
• Created: 2019-05-31T20:59:10.000Z (almost 6 years ago)
• Default Branch: master
• Last Pushed: 2019-08-29T19:36:20.000Z (over 5 years ago)
• Last Synced: 2025-02-21T14:49:55.825Z (3 months ago)
• Topics: expression, expression-evaluator, expression-language, expression-parser, expressionengine, python27, python3, validate, validation, validation-library, validators, xpath
• Language: Python
• Size: 44.9 KB
• Stars: 1
• Watchers: 4
• Forks: 0
• Open Issues: 0
• Metadata Files:
  • Readme: README.rst
  • License: LICENSE.txt

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README

        
xpath_validator 

===============

.. image:: https://travis-ci.org/znc-sistemas/xpath_validator.svg?branch=master

    :target: https://travis-ci.org/znc-sistemas/xpath_validator

.. image:: https://coveralls.io/repos/github/znc-sistemas/xpath_validator/badge.svg?branch=master

    :target: https://coveralls.io/github/znc-sistemas/xpath_validator?branch=master

.. image:: https://img.shields.io/badge/license-MIT-blue.svg?style=flat-square

    :target: https://raw.githubusercontent.com/znc-sistemas/xpath_validator/master/LICENSE.txt

    :alt: Package license

Validate boolean expressions with XPath syntax

validate('expression', 'value', 'context', 'returns_bool')

- expression: string with the expression text

- value: value that will be validated (it is replaced by the occurrences of '.' in the expression)

- context: dictionary that will make substitutions in $ {name}

- returns_bool: if true, automatically returns a boolean

Examples

--------

.. code-block:: python

    

    >>> validate('. >= 1 and . <= 100', 10)

    True

    >>> validate('. >= 1 and . <= 100', 101)

    False

    >>> validate('not(. >= 1 and . <= 100)', -10)

    True

    >>> validate('ceiling(.) = 5', 4.3)

    True

    >>> validate('floor(.) = 4', 4.7)

    True

    >>> validate('floor(.) = 4', 4.2)

    True

    >>> validate('int(.) = 4', 4.7)

    True

    >>> validate('number(.) = 3.2', 3.2)

    True

    >>> validate('choose(true(), 1, 2) = 1', None)

    True

    >>> validate('choose(false(), 1, 2) = 2', None)

    True

    >>> validate('contains("abc", .)', "b")

    True

    >>> validate('contains("abc", .)', "e")

    False

    >>> validate('number(string(.)) = 6', 6)

    True

    >>> validate('string-length(.) = 15', "632587415222360")

    True

    >>> validate('string_length(.) = 11', "40258997853")

    True

    >>> validate('string_length(.) = 7', "abacate")

    True

    >>> validate('5 < .', 10)

    True

    >>> validate('5 > .', 10)

    False

    >>> validate('5 != .', 5)

    False

    >>> validate('5 != .', 10)

    True

    >>> validate('5 + 5 = .', 10)

    True

    >>> validate('5 - 51 = .', -46)

    True

    >>> validate('true() or false()', None)

    True

    >>> validate('false() or false()', None)

    False

    >>> validate('(. div 5) = 2', 10)

    True

    >>> validate('(. * 5) = 50', 10)

    True

    >>> validate('(. div 5) < .', 10)

    True

    >>> validate('(. * 5) > .', 10)

    True

    >>> validate('(. mod 2) = 0', 10)

    True

    >>> validate('(. mod 2) = 1', 11)

    True

    >>> validate('(. mod 2) = 1', 10)

    False

    >>> validate('(. mod 2) = 0', 11)

    False

    >>> validate("int(format-date-time(., '%H')) = 19", '2019-05-14T19:13:35.450686Z')

    True

    >>> validate("int(format-date-time(., '%m')) = 5", '2019-05-14T19:13:35.450686Z')

    True

    >>> validate("int(format-date-time(., '%M')) = 13", '2019-05-14T19:13:35.450686Z')

    True

    >>> validate("int(format-date-time(., '%Y')) = 2019", '2019-05-14T19:13:35.450686Z')

    True

    >>> validate("int(format-date-time(., '%d')) = 14", '2019-05-14T19:13:35.450686Z')

    True

    >>> validate("format-date-time(., '%d/%m/%Y') = '14/05/2019'", '2019-05-14T19:13:35.450686Z')

    True

    >>> validate('. >= ${min} and . <= ${max}', 10, {"max": 100, "min": 10})

    True

    >>> validate('. >= ${min} and . <= ${max}', 10, {"max": 100, "min": 20})

    False

    >>> validate('${min} = "" and ${max} = ""', None, {"max": 100, "min": 20})

    False

    >>> validate("substring-after('aa&bb', ${sep}) = 'bb'", "&", {'sep': '&'})

    True

    >>> validate("substring-before('aa&bb', ${sep}) = 'aa'", "&", {'sep': '&'})

    True

    >>> validate("normalize-space('    abacate ') = 'abacate'", None)

    True

    >>> validate("starts-with('abacate', 'ab')", None)

    True

    >>> validate("starts-with('abacate', 'ac')", None)

    False

    >>> validate("uuid()", None, returns_bool=False)

    '2327c8bc-ac46-4968-a73c-5f21f9e9b1ce'

    >>> validate('(. div -5)', 10, returns_bool=False)

    -2.0

    >>> validate("selected('peixe abacate', .)", 'peixe')

    True

    >>> validate("selected('peixe abacate', 'peixe')", None)

    True