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"""
fs.errors: error class definitions for FS
"""
class FSError(Exception):
"""Base exception class for the FS module."""
default_message = "Unspecified error"
def __init__(self,msg=None,details=None):
if msg is None:
msg = self.default_message
self.msg = msg
self.details = details
def __str__(self):
keys = dict((k,str(v)) for k,v in self.__dict__.iteritems())
return self.msg % keys
def __unicode__(self):
return unicode(str(self))
class PathError(FSError):
"""Exception for errors to do with a path string."""
default_message = "Path is invalid: %(path)s"
def __init__(self,path,**kwds):
self.path = path
super(ResourceError,self).__init__(**kwds)
class OperationFailedError(FSError):
"""Base exception class for errors associated with a specific operation."""
default_message = "Unable to %(opname)s: unspecified error"
def __init__(self,opname,path=None,**kwds):
self.opname = opname
self.path = path
super(OperationFailedError,self).__init__(**kwds)
class UnsupportedError(OperationFailedError):
"""Exception raised for operations that are not supported by the FS."""
default_message = "Unable to %(opname)s: not supported by this filesystem"
class ResourceError(FSError):
"""Base exception class for error associated with a specific resource."""
default_message = "Unspecified resource error: %(path)s"
def __init__(self,path,**kwds):
self.path = path
super(ResourceError,self).__init__(**kwds)
class NoSysPathError(ResourceError):
"""Exception raised when there is no syspath for a given path."""
default_message = "No mapping to OS filesystem: %(path)s"
class ResourceNotFoundError(ResourceError):
"""Exception raised when a required resource is not found."""
default_message = "Resource not found: %(path)s"
class DirectoryNotFoundError(ResourceNotFoundError):
"""Exception raised when a required directory is not found."""
default_message = "Directory not found: %(path)s"
class FileNotFoundError(ResourceNotFoundError):
"""Exception raised when a required file is not found."""
default_message = "File not found: %(path)s"
class ResourceInvalidError(ResourceError):
"""Exception raised when a required file is not found."""
default_message = "Resource is invalid: %(path)s"
class DestinationExistsError(ResourceError):
"""Exception raised when a target destination already exists."""
default_message = "Destination exists: %(path)s"
class DirectoryNotEmptyError(ResourceError):
"""Exception raised when a directory to be removed is not empty."""
default_message = "Directory is not empty: %(path)s"
class ParentDirectoryMissingError(ResourceError):
"""Exception raised when a parent directory is missing."""
default_message = "Parent directory is missing: %(path)s"
class ResourceLockedError(ResourceError):
"""Exception raised when a resource can't be used because it is locked."""
default_message = "Resource is locked: %(path)s"
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