# -*-coding:Utf-8 -*

# Copyright (c) 2012 NOEL-BARON Léo
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"""Ce fichier contient la classe Filtre, définie plus bas.

"""

class Filtre:

    """Classe de filtre.

    Cette classe modélise un filtre de recherche et permet de tester
    une valeur.

    """

    def __init__(self, opt_courte, opt_longue, test, type):
        """Constructeur de la classe"""
        self.opt_courte = opt_courte
        self.opt_longue = opt_longue
        self.test = test
        self.type = importeur.recherche.types_filtres[type]

    def __str__(self):
        courte = "-" + self.opt_courte
        longue = "--" + self.opt_longue if self.opt_longue else ""
        if self.type:
            courte += " ARG"
            longue += "=ARG" if self.opt_longue else ""
        return courte + ", " + longue if self.opt_longue else courte

    def tester(self, objet, valeur):
        """Teste le filtre"""
        if callable(self.test):
            return self.test(objet, valeur)
        elif self.type:
            attribut = str(getattr(objet, self.test))
            return self.type.tester(objet, attribut, valeur)
