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
python类wheel_ext()的实例源码
def _known_extensions(self):
extensions = ('.tar.gz', '.tar.bz2', '.tar', '.tgz', '.zip')
if self.use_wheel:
return extensions + (wheel_ext,)
return extensions
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)
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
def _known_extensions(self):
extensions = ('.tar.gz', '.tar.bz2', '.tar', '.tgz', '.zip')
if self.use_wheel:
return extensions + (wheel_ext,)
return extensions
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)
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
def _known_extensions(self):
extensions = ('.tar.gz', '.tar.bz2', '.tar', '.tgz', '.zip')
if self.use_wheel:
return extensions + (wheel_ext,)
return extensions
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)
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
def _known_extensions(self):
extensions = ('.tar.gz', '.tar.bz2', '.tar', '.tgz', '.zip')
if self.use_wheel:
return extensions + (wheel_ext,)
return extensions
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)
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
def _known_extensions(self):
extensions = ('.tar.gz', '.tar.bz2', '.tar', '.tgz', '.zip')
if self.use_wheel:
return extensions + (wheel_ext,)
return extensions
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)
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
def _known_extensions(self):
extensions = ('.tar.gz', '.tar.bz2', '.tar', '.tgz', '.zip')
if self.use_wheel:
return extensions + (wheel_ext,)
return extensions
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)
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
def _known_extensions(self):
extensions = ('.tar.gz', '.tar.bz2', '.tar', '.tgz', '.zip')
if self.use_wheel:
return extensions + (wheel_ext,)
return extensions
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)
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
def _known_extensions(self):
extensions = ('.tar.gz', '.tar.bz2', '.tar', '.tgz', '.zip')
if self.use_wheel:
return extensions + (wheel_ext,)
return extensions
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)
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
def _known_extensions(self):
extensions = ('.tar.gz', '.tar.bz2', '.tar', '.tgz', '.zip')
if self.use_wheel:
return extensions + (wheel_ext,)
return extensions
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)
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
def _known_extensions(self):
extensions = ('.tar.gz', '.tar.bz2', '.tar', '.tgz', '.zip')
if self.use_wheel:
return extensions + (wheel_ext,)
return extensions
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)
