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408 | class ProjectMetadataWriter(ABC):
"""Base class for Project Metadata Output Wrapper.
All supported output formats are implemented as subclasses.
"""
def __init__(
self,
path: Path,
*,
create_if_not_exists: Optional[bool] = False,
direct_mappings: FieldKeyMapping = None,
) -> None:
"""Initialize the Project Metadata Output Wrapper.
Use the `direct_mappings` dict to define
format-specific location for certain fields,
if no additional processing is needed that
requires a customized setter.
Args:
path: Path to target output file.
create_if_not_exists: Create an empty CFF file if not exists. Defaults to True.
direct_mappings: Dict with direct mappings of keys between somesy and target
"""
self._data: DictLike = {}
self.path = path if isinstance(path, Path) else Path(path)
self.create_if_not_exists = create_if_not_exists
self.direct_mappings = direct_mappings or {}
if self.path.is_file():
self._load()
self._validate()
else:
if self.create_if_not_exists:
self._init_new_file()
self._load()
else:
raise FileNotFoundError(f"The file {self.path} does not exist.")
def _init_new_file(self) -> None:
"""Create an new suitable target file.
Override to initialize file with minimal contents, if needed.
Make sure to set `self._data` to match the contents.
"""
self.path.touch()
@abstractmethod
def _load(self):
"""Load the output file and validate it.
Implement this method so that it loads the file `self.path`
into the `self._data` dict.
The file is guaranteed to exist.
"""
@abstractmethod
def _validate(self):
"""Validate the target file data.
Implement this method so that it checks
the validity of the metadata (relevant to somesy)
in that file and raises exceptions on failure.
"""
@abstractmethod
def save(self, path: Optional[Path]) -> None:
"""Save the output file to the given path.
Implement this in a way that will carefully
update the target file with new metadata
without destroying its other contents or structure.
"""
def _get_property(
self,
key: Union[str, List[str]],
*,
only_first: bool = False,
remove: bool = False,
) -> Optional[Any]:
"""Get a property from the data.
Override this to e.g. rewrite the retrieved key
(e.g. if everything relevant is in some subobject).
Args:
key: Name of the key or sequence of multiple keys to retrieve the value.
only_first: If True, returns only first entry if the value is a list.
remove: If True, will remove the retrieved value and clean up the dict.
"""
key_path = [key] if isinstance(key, str) else key
curr = self._data
seq = [curr]
for k in key_path:
curr = curr.get(k)
curr = curr[0] if isinstance(curr, list) and only_first else curr
seq.append(curr)
if curr is None:
return None
if remove:
seq.pop()
del seq[-1][key_path[-1]] # remove leaf value
# clean up the tree
for key, dct in reversed(list(zip(key_path[:-1], seq[:-1]))):
if not dct.get(key):
del dct[key]
if isinstance(curr, list) and only_first:
return curr[0]
return curr
def _set_property(self, key: Union[str, List[str], IgnoreKey], value: Any) -> None:
"""Set a property in the data.
Note if there are lists along the path, they are cleared out.
Override this to e.g. rewrite the retrieved key
(e.g. if everything relevant is in some subobject).
"""
if isinstance(key, IgnoreKey):
return
key_path = [key] if isinstance(key, str) else key
if not value: # remove value and clean up the sub-dict
self._get_property(key_path, remove=True)
return
# create path on the fly if needed
curr = self._data
for key in key_path[:-1]:
if key not in curr:
curr[key] = {}
curr = curr[key]
curr[key_path[-1]] = value
# ----
# special handling for person metadata
def _merge_person_metadata(
self, old: List[Person], new: List[Person]
) -> List[Person]:
"""Update metadata of a list of persons.
Will identify people based on orcid, email or full name.
If old list has same person listed multiple times,
the resulting list will too (we cannot correctly merge for external formats.)
"""
new_people = [] # list for new people (e.g. added authors)
# flag, meaning "person was not removed"
still_exists = [False for i in range(len(old))]
# copies of old person data, to be modified
modified_people = [p.model_copy() for p in old]
# try to match new people to existing old ones
# (inefficient, but author list are not that long usually)
for person_meta in new:
person_update = person_meta.model_dump()
person_existed = False
for i in range(len(modified_people)):
person = modified_people[i]
if not person.same_person(person_meta):
continue
# not new person (-> will not append new record)
person_existed = True
# still exists (-> will not be removed from list)
still_exists[i] = True
# if there were changes -> update person
overlapping_fields = person.model_dump(
include=set(person_update.keys())
)
if person_update != overlapping_fields:
modified_people[i] = person.model_copy(update=person_update)
# show effective update in debug log
old_fmt = self._from_person(person)
new_fmt = self._from_person(modified_people[i])
if old_fmt != new_fmt:
logger.debug(f"Updating person\n{old_fmt}\nto\n{new_fmt}")
if not person_existed:
new_people.append(person_meta)
# show added and removed people in debug log
removed_people = [old[i] for i in range(len(old)) if not still_exists[i]]
for person in removed_people:
logger.debug(f"Removing person\n{self._from_person(person)}")
for person in new_people:
logger.debug(f"Adding person\n{self._from_person(person)}")
# return updated list of (still existing) people,
# and all new people coming after them.
existing_modified = [
modified_people[i] for i in range(len(old)) if still_exists[i]
]
return existing_modified + new_people
def _sync_person_list(self, old: List[Any], new: List[Person]) -> List[Any]:
"""Sync a list of persons with new metadata.
Args:
old (List[Any]): list of persons in format-specific representation
new (List[Person]): list of persons in somesy representation
Returns:
List[Any]: updated list of persons in format-specific representation
"""
old_people: List[Person] = self._parse_people(old)
return self._merge_person_metadata(old_people, new)
def _sync_authors(self, metadata: ProjectMetadata) -> None:
"""Sync output file authors with authors from metadata.
This method is existing for the publication_author special case
when synchronizing to CITATION.cff.
"""
self.authors = self._sync_person_list(self.authors, metadata.authors())
def sync(self, metadata: ProjectMetadata) -> None:
"""Sync output file with other metadata files."""
self.name = metadata.name
self.description = metadata.description
if metadata.version:
self.version = metadata.version
if metadata.keywords:
self.keywords = metadata.keywords
self._sync_authors(metadata)
self.maintainers = self._sync_person_list(
self.maintainers, metadata.maintainers()
)
self.license = metadata.license.value
self.homepage = str(metadata.homepage) if metadata.homepage else None
self.repository = str(metadata.repository) if metadata.repository else None
self.documentation = (
str(metadata.documentation) if metadata.documentation else None
)
@staticmethod
@abstractmethod
def _from_person(person: Person) -> Any:
"""Convert a `Person` object into suitable target format."""
@staticmethod
@abstractmethod
def _to_person(person_obj: Any) -> Person:
"""Convert an object representing a person into a `Person` object."""
@classmethod
def _parse_people(cls, people: Optional[List[Any]]) -> List[Person]:
"""Return a list of Persons parsed from list of format-specific people representations."""
return list(map(cls._to_person, people or []))
# ----
# individual magic getters and setters
def _get_key(self, key):
return self.direct_mappings.get(key) or key
@property
def name(self):
"""Return the name of the project."""
return self._get_property(self._get_key("name"))
@name.setter
def name(self, name: str) -> None:
"""Set the name of the project."""
self._set_property(self._get_key("name"), name)
@property
def version(self) -> Optional[str]:
"""Return the version of the project."""
return self._get_property(self._get_key("version"))
@version.setter
def version(self, version: str) -> None:
"""Set the version of the project."""
self._set_property(self._get_key("version"), version)
@property
def description(self) -> Optional[str]:
"""Return the description of the project."""
return self._get_property(self._get_key("description"))
@description.setter
def description(self, description: str) -> None:
"""Set the description of the project."""
self._set_property(self._get_key("description"), description)
@property
def authors(self):
"""Return the authors of the project."""
return self._get_property(self._get_key("authors"))
@authors.setter
def authors(self, authors: List[Person]) -> None:
"""Set the authors of the project."""
authors = [self._from_person(c) for c in authors]
self._set_property(self._get_key("authors"), authors)
@property
def maintainers(self):
"""Return the maintainers of the project."""
return self._get_property(self._get_key("maintainers"))
@maintainers.setter
def maintainers(self, maintainers: List[Person]) -> None:
"""Set the maintainers of the project."""
maintainers = [self._from_person(c) for c in maintainers]
self._set_property(self._get_key("maintainers"), maintainers)
@property
def contributors(self):
"""Return the contributors of the project."""
return self._get_property(self._get_key("contributors"))
@contributors.setter
def contributors(self, contributors: List[Person]) -> None:
"""Set the contributors of the project."""
contributors = [self._from_person(c) for c in contributors]
self._set_property(self._get_key("contributors"), contributors)
@property
def keywords(self) -> Optional[List[str]]:
"""Return the keywords of the project."""
return self._get_property(self._get_key("keywords"))
@keywords.setter
def keywords(self, keywords: List[str]) -> None:
"""Set the keywords of the project."""
self._set_property(self._get_key("keywords"), keywords)
@property
def license(self) -> Optional[str]:
"""Return the license of the project."""
return self._get_property(self._get_key("license"))
@license.setter
def license(self, license: Optional[str]) -> None:
"""Set the license of the project."""
self._set_property(self._get_key("license"), license)
@property
def homepage(self) -> Optional[str]:
"""Return the homepage url of the project."""
return self._get_property(self._get_key("homepage"))
@homepage.setter
def homepage(self, value: Optional[str]) -> None:
"""Set the homepage url of the project."""
self._set_property(self._get_key("homepage"), value)
@property
def repository(self) -> Optional[Union[str, dict]]:
"""Return the repository url of the project."""
return self._get_property(self._get_key("repository"))
@repository.setter
def repository(self, value: Optional[Union[str, dict]]) -> None:
"""Set the repository url of the project."""
self._set_property(self._get_key("repository"), value)
@property
def documentation(self) -> Optional[Union[str, dict]]:
"""Return the documentation url of the project."""
return self._get_property(self._get_key("documentation"))
@documentation.setter
def documentation(self, value: Optional[Union[str, dict]]) -> None:
"""Set the documentation url of the project."""
self._set_property(self._get_key("documentation"), value)
|