"""Functions for renaming files based on metadata""" # # Copyright 2012-2014 Anthony Beville # # Licensed under the Apache License, Version 2.0 (the "License"); # you may not use this file except in compliance with the License. # You may obtain a copy of the License at # # http://www.apache.org/licenses/LICENSE-2.0 # # Unless required by applicable law or agreed to in writing, software # distributed under the License is distributed on an "AS IS" BASIS, # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. # See the License for the specific language governing permissions and # limitations under the License. from __future__ import annotations import calendar import logging import os import pathlib import string import sys from typing import Any, cast from pathvalidate import sanitize_filename from comicapi.genericmetadata import GenericMetadata from comicapi.issuestring import IssueString logger = logging.getLogger(__name__) class MetadataFormatter(string.Formatter): def __init__(self, smart_cleanup: bool = False, platform: str = "auto") -> None: super().__init__() self.smart_cleanup = smart_cleanup self.platform = platform def format_field(self, value: Any, format_spec: str) -> str: if value is None or value == "": return "" return cast(str, super().format_field(value, format_spec)) def _vformat( self, format_string: str, args: list[Any], kwargs: dict[str, Any], used_args: set[Any], recursion_depth: int, auto_arg_index: int = 0, ) -> tuple[str, int]: if recursion_depth < 0: raise ValueError("Max string recursion exceeded") result = [] lstrip = False for literal_text, field_name, format_spec, conversion in self.parse(format_string): # output the literal text if literal_text: if lstrip: literal_text = literal_text.lstrip("-_)}]#") if self.smart_cleanup: lspace = literal_text[0].isspace() if literal_text else False rspace = literal_text[-1].isspace() if literal_text else False literal_text = " ".join(literal_text.split()) if literal_text == "": literal_text = " " else: if lspace: literal_text = " " + literal_text if rspace: literal_text += " " result.append(literal_text) lstrip = False # if there's a field, output it if field_name is not None and field_name != "": field_name = field_name.lower() # this is some markup, find the object and do the formatting # handle arg indexing when empty field_names are given. if field_name == "": if auto_arg_index is False: raise ValueError("cannot switch from manual field specification to automatic field numbering") field_name = str(auto_arg_index) auto_arg_index += 1 elif field_name.isdigit(): if auto_arg_index: raise ValueError("cannot switch from manual field specification to automatic field numbering") # disable auto arg incrementing, if it gets used later on, then an exception will be raised auto_arg_index = False # given the field_name, find the object it references # and the argument it came from obj, arg_used = self.get_field(field_name, args, kwargs) used_args.add(arg_used) # do any conversion on the resulting object obj = self.convert_field(obj, conversion) # type: ignore # expand the format spec, if needed format_spec, auto_arg_index = self._vformat( cast(str, format_spec), args, kwargs, used_args, recursion_depth - 1, auto_arg_index=auto_arg_index ) # format the object and append to the result fmt_obj = self.format_field(obj, format_spec) if fmt_obj == "" and len(result) > 0 and self.smart_cleanup: lstrip = True if result: result[-1] = result[-1].rstrip("-_({[#") if self.smart_cleanup: fmt_obj = " ".join(fmt_obj.split()) fmt_obj = str(sanitize_filename(fmt_obj, platform=self.platform)) result.append(fmt_obj) return "".join(result), auto_arg_index class FileRenamer: def __init__(self, metadata: GenericMetadata | None, platform: str = "auto") -> None: self.template = "{publisher}/{series}/{series} v{volume} #{issue} (of {issue_count}) ({year})" self.smart_cleanup = True self.issue_zero_padding = 3 self.metadata = metadata or GenericMetadata() self.move = False self.platform = platform def set_metadata(self, metadata: GenericMetadata) -> None: self.metadata = metadata def set_issue_zero_padding(self, count: int) -> None: self.issue_zero_padding = count def set_smart_cleanup(self, on: bool) -> None: self.smart_cleanup = on def set_template(self, template: str) -> None: self.template = template def determine_name(self, ext: str) -> str: class Default(dict): def __missing__(self, key: str) -> str: return "{" + key + "}" md = self.metadata # padding for issue md.issue = IssueString(md.issue).as_string(pad=self.issue_zero_padding) template = self.template new_name = "" fmt = MetadataFormatter(self.smart_cleanup, platform=self.platform) md_dict = vars(md) for role in ["writer", "penciller", "inker", "colorist", "letterer", "cover artist", "editor"]: md_dict[role] = md.get_primary_credit(role) if (isinstance(md.month, int) or isinstance(md.month, str) and md.month.isdigit()) and 0 < int(md.month) < 13: md_dict["month_name"] = calendar.month_name[int(md.month)] md_dict["month_abbr"] = calendar.month_abbr[int(md.month)] else: md_dict["month_name"] = "" md_dict["month_abbr"] = "" for Component in pathlib.PureWindowsPath(template).parts: if ( self.platform.lower() in ["universal", "windows"] or sys.platform.lower() in ["windows"] ) and self.smart_cleanup: # colons get special treatment Component = Component.replace(": ", " - ") Component = Component.replace(":", "-") new_basename = str( sanitize_filename(fmt.vformat(Component, args=[], kwargs=Default(md_dict)), platform=self.platform) ).strip() new_name = os.path.join(new_name, new_basename) new_name += ext new_basename += ext # remove padding md.issue = IssueString(md.issue).as_string() if self.move: return new_name.strip() return new_basename.strip()