diff options
Diffstat (limited to 'portato/dependency.py')
| -rw-r--r-- | portato/dependency.py | 24 |
1 files changed, 18 insertions, 6 deletions
diff --git a/portato/dependency.py b/portato/dependency.py index 91e4fb5..a52a630 100644 --- a/portato/dependency.py +++ b/portato/dependency.py @@ -19,6 +19,7 @@ __docformat__ = "restructuredtext" from .helper import debug +from .backend import system class Dependency (object): @@ -29,6 +30,9 @@ class Dependency (object): dep : string The dependency string. It is immutable. + + satisfied : boolean + Is this dependency satisfied? """ def __init__ (self, dep): @@ -38,7 +42,15 @@ class Dependency (object): :param dep: dependency string :type dep: string """ - self.__dep = dep + self._dep = dep + + def is_satisfied (self): + """ + Checks if this dependency is satisfied. + + :rtype: boolean + """ + return system.find_best_match(self.dep, only_cpv = True, only_installed = True) is not None def __cmp__ (self, b): return cmp(self.dep, b.dep) @@ -51,13 +63,13 @@ class Dependency (object): __repr__ = __str__ - def __get_dep (self): - return self.__dep + def _get_dep (self): + return self._dep - dep = property(__get_dep) + dep = property(_get_dep) + satisfied = property(is_satisfied) class OrDependency (Dependency): - """ Dependency representing an "or". @@ -77,7 +89,7 @@ class OrDependency (Dependency): :type deps: iter<string> """ - self.__dep = tuple(Dependency(dep) for dep in deps) + self._dep = tuple(Dependency(dep) for dep in deps) def __str__ (self): return "<|| %s>" % str(self.dep) |