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d d � � YZ d a d � Z d S( sB Module for parsing and testing package version predicate strings.
i����Ns' (?i)^\s*([a-z_]\w*(?:\.[a-z_]\w*)*)(.*)s ^\s*\((.*)\)\s*$s% ^\s*(<=|>=|<|>|!=|==)\s*([^\s,]+)\s*$c C sP t j | � } | s( t d | � � n | j � \ } } | t j j | � f S( sV Parse a single version comparison.
Return (comparison string, StrictVersion)
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t <s <=s ==t >s >=s !=t VersionPredicatec B s) e Z d Z d � Z d � Z d � Z RS( s� Parse and test package version predicates.
>>> v = VersionPredicate('pyepat.abc (>1.0, <3333.3a1, !=1555.1b3)')
The `name` attribute provides the full dotted name that is given::
>>> v.name
'pyepat.abc'
The str() of a `VersionPredicate` provides a normalized
human-readable version of the expression::
>>> print v
pyepat.abc (> 1.0, < 3333.3a1, != 1555.1b3)
The `satisfied_by()` method can be used to determine with a given
version number is included in the set described by the version
restrictions::
>>> v.satisfied_by('1.1')
True
>>> v.satisfied_by('1.4')
True
>>> v.satisfied_by('1.0')
False
>>> v.satisfied_by('4444.4')
False
>>> v.satisfied_by('1555.1b3')
False
`VersionPredicate` is flexible in accepting extra whitespace::
>>> v = VersionPredicate(' pat( == 0.1 ) ')
>>> v.name
'pat'
>>> v.satisfied_by('0.1')
True
>>> v.satisfied_by('0.2')
False
If any version numbers passed in do not conform to the
restrictions of `StrictVersion`, a `ValueError` is raised::
>>> v = VersionPredicate('p1.p2.p3.p4(>=1.0, <=1.3a1, !=1.2zb3)')
Traceback (most recent call last):
...
ValueError: invalid version number '1.2zb3'
It the module or package name given does not conform to what's
allowed as a legal module or package name, `ValueError` is
raised::
>>> v = VersionPredicate('foo-bar')
Traceback (most recent call last):
...
ValueError: expected parenthesized list: '-bar'
>>> v = VersionPredicate('foo bar (12.21)')
Traceback (most recent call last):
...
ValueError: expected parenthesized list: 'bar (12.21)'
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t stripR t re_validPackageR R t namet re_parent splitR R ( t selft versionPredicateStrR t parent strt aPred( ( s2 /usr/lib64/python2.7/distutils/versionpredicate.pyt __init___ s$ + c C s` | j rU g | j D] \ } } | d t | � ^ q } | j d d j | � d S| j Sd S( Nt s (s , t )( R R R t join( R t condt vert seq( ( s2 /usr/lib64/python2.7/distutils/versionpredicate.pyt __str__z s 0 c C s5 x. | j D]# \ } } t | | | � s
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Wt S( s� True if version is compatible with all the predicates in self.
The parameter version must be acceptable to the StrictVersion
constructor. It may be either a string or StrictVersion.
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| � } n | j d � | f S( s9 Return the name and optional version number of a provision.
The version number, if given, will be returned as a `StrictVersion`
instance, otherwise it will be `None`.
>>> split_provision('mypkg')
('mypkg', None)
>>> split_provision(' mypkg( 1.2 ) ')
('mypkg', StrictVersion ('1.2'))
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