Python wheel.wheel_ext方法代码示例

# 需要导入模块: from pip import wheel [as 别名]
# 或者: from pip.wheel import wheel_ext [as 别名]
def _link_sort_key(self, link_tuple):
        """
        Function used to generate link sort key for link tuples.
        The greater the return value, the more preferred it is.
        If not finding wheels, then sorted by version only.
        If finding wheels, then the sort order is by version, then:
          1. existing installs
          2. wheels ordered via Wheel.support_index_min()
          3. source archives
        Note: it was considered to embed this logic into the Link
              comparison operators, but then different sdist links
              with the same version, would have to be considered equal
        """
        parsed_version, link, _ = link_tuple
        if self.use_wheel:
            support_num = len(supported_tags)
            if link == INSTALLED_VERSION:
                pri = 1
            elif link.ext == wheel_ext:
                wheel = Wheel(link.filename) # can raise InvalidWheelFilename
                if not wheel.supported():
                    raise UnsupportedWheel("%s is not a supported wheel for this platform. It can't be sorted." % wheel.filename)
                pri = -(wheel.support_index_min())
            else: # sdist
                pri = -(support_num)
            return (parsed_version, pri)
        else:
            return parsed_version 

# 需要导入模块: from pip import wheel [as 别名]
# 或者: from pip.wheel import wheel_ext [as 别名]
def _known_extensions(self):
        extensions = ('.tar.gz', '.tar.bz2', '.tar', '.tgz', '.zip')
        if self.use_wheel:
            return extensions + (wheel_ext,)
        return extensions 

# 需要导入模块: from pip import wheel [as 别名]
# 或者: from pip.wheel import wheel_ext [as 别名]
def from_line(cls, name, comes_from=None, prereleases=None):
        """Creates an InstallRequirement from a name, which might be a
        requirement, directory containing 'setup.py', filename, or URL.
        """
        url = None
        name = name.strip()
        req = None
        path = os.path.normpath(os.path.abspath(name))
        link = None

        if is_url(name):
            link = Link(name)
        elif os.path.isdir(path) and (os.path.sep in name or name.startswith('.')):
            if not is_installable_dir(path):
                raise InstallationError("Directory %r is not installable. File 'setup.py' not found." % name)
            link = Link(path_to_url(name))
        elif is_archive_file(path):
            if not os.path.isfile(path):
                logger.warn('Requirement %r looks like a filename, but the file does not exist', name)
            link = Link(path_to_url(name))

        # If the line has an egg= definition, but isn't editable, pull the requirement out.
        # Otherwise, assume the name is the req for the non URL/path/archive case.
        if link and req is None:
            url = link.url_without_fragment
            req = link.egg_fragment  #when fragment is None, this will become an 'unnamed' requirement

            # Handle relative file URLs
            if link.scheme == 'file' and re.search(r'\.\./', url):
                url = path_to_url(os.path.normpath(os.path.abspath(link.path)))

            # fail early for invalid or unsupported wheels
            if link.ext == wheel_ext:
                wheel = Wheel(link.filename) # can raise InvalidWheelFilename
                if not wheel.supported():
                    raise UnsupportedWheel("%s is not a supported wheel on this platform." % wheel.filename)

        else:
            req = name

        return cls(req, comes_from, url=url, prereleases=prereleases)