523ebc9b0b
Simplified universal serialization support in json.dump() can be achieved by passing 'default=str', which was already the case in DataJob.run() for -j/--dump-json, but not for the 'metadata' post-processor. This commit introduces util.dump_json() that (more or less) unifies the JSON output procedure of both --write-metadata and --dump-json. (#251, #252)
67 lines
1.9 KiB
Python
67 lines
1.9 KiB
Python
# -*- coding: utf-8 -*-
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# Copyright 2019 Mike Fährmann
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#
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# This program is free software; you can redistribute it and/or modify
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# it under the terms of the GNU General Public License version 2 as
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# published by the Free Software Foundation.
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"""Write metadata to JSON files"""
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from .common import PostProcessor
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from .. import util
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class MetadataPP(PostProcessor):
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def __init__(self, pathfmt, options):
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PostProcessor.__init__(self)
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mode = options.get("mode", "json")
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ext = "txt"
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if mode == "custom":
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self.write = self._write_custom
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self.formatter = util.Formatter(options.get("format"))
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elif mode == "tags":
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self.write = self._write_tags
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else:
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self.write = self._write_json
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self.indent = options.get("indent", 4)
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self.ascii = options.get("ascii", False)
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ext = "json"
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self.extension = options.get("extension", ext)
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def run(self, pathfmt):
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path = "{}.{}".format(pathfmt.realpath, self.extension)
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with open(path, "w", encoding="utf-8") as file:
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self.write(file, pathfmt)
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def _write_custom(self, file, pathfmt):
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output = self.formatter.format_map(pathfmt.keywords)
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file.write(output)
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def _write_tags(self, file, pathfmt):
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kwds = pathfmt.keywords
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tags = kwds.get("tags") or kwds.get("tag_string")
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if not tags:
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return
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if not isinstance(tags, list):
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for separator in (" :: ", ", ", " "):
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taglist = tags.split(separator)
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if len(taglist) >= len(tags) / 16:
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break
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tags = taglist
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file.write("\n".join(tags))
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file.write("\n")
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def _write_json(self, file, pathfmt):
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util.dump_json(pathfmt.keywords, file, self.ascii, self.indent)
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__postprocessor__ = MetadataPP
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