exceptions.py

import os


def argument_exceptions(source_path: str, destination_path: str):
    if not os.path.exists(source_path):
        raise FileNotFoundError("Path to the source file is invalid.")
    if not os.path.exists(destination_path):
        raise FileNotFoundError("Path to the destination directory is invalid.")
    if os.path.isfile(destination_path):
        raise InvalidDirectoryPathException
    if os.path.isdir(source_path):
        raise InvalidFilePathException


class ChasseException(Exception):
    """Base exception of the application."""


class InvalidDirectoryPathException(ChasseException):
    """Thrown if the corresponding argument is a file instead of a directory."""


class InvalidFilePathException(ChasseException):
    """Thrown if the corresponding argument is a directory instead of a file."""


class NoSpecifiedParentsException(ChasseException):
    """Thrown if the child document has no mentions of any parent document."""


class ParentAsDirectoryException(ChasseException):
    """Thrown if the child document bears mention of a parent document that is actualy a directory."""


class ParentFilesNotFoundException(ChasseException):
    """Thrown if the parent path does not have all files mentioned by a source file."""


class ComponentCountMismatchException(ChasseException):
    """Thrown if the count of the parsed components don't match the count of the required components."""


class ParentPathNotSpecifiedException(ChasseException):
    """Thrown if the -p or --parent-path flag has been used without specifying the path."""


class ResultantFileNameNotSpecifiedException(ChasseException):
    """Thrown if the -n or --name flag has been used without specifying the resultant file name."""


class MultiLineCommentBeforeParentDeclarationException(ChasseException):
    """Thrown if we have a multi-line HTML comment (that spans across multiple lines) before the parent file definitions."""