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59 lines
1.8 KiB
59 lines
1.8 KiB
import dataclasses
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import json
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from .common import Color
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from .ssaevent import SSAEvent
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from .ssastyle import SSAStyle
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from .formatbase import FormatBase
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# We're using Color dataclass
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# https://stackoverflow.com/questions/51286748/make-the-python-json-encoder-support-pythons-new-dataclasses
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class EnhancedJSONEncoder(json.JSONEncoder):
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def default(self, o):
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if dataclasses.is_dataclass(o):
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return dataclasses.asdict(o)
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return super().default(o)
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class JSONFormat(FormatBase):
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"""
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Implementation of JSON subtitle pseudo-format (serialized pysubs2 internal representation)
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This is essentially SubStation Alpha as JSON.
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"""
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@classmethod
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def guess_format(cls, text):
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"""See :meth:`pysubs2.formats.FormatBase.guess_format()`"""
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if text.startswith("{\""):
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return "json"
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@classmethod
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def from_file(cls, subs, fp, format_, **kwargs):
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"""See :meth:`pysubs2.formats.FormatBase.from_file()`"""
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data = json.load(fp)
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subs.info.clear()
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subs.info.update(data["info"])
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subs.styles.clear()
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for name, fields in data["styles"].items():
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subs.styles[name] = sty = SSAStyle()
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for k, v in fields.items():
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if "color" in k:
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setattr(sty, k, Color(**v))
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else:
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setattr(sty, k, v)
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subs.events = [SSAEvent(**fields) for fields in data["events"]]
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@classmethod
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def to_file(cls, subs, fp, format_, **kwargs):
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"""See :meth:`pysubs2.formats.FormatBase.to_file()`"""
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data = {
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"info": dict(**subs.info),
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"styles": {name: sty.as_dict() for name, sty in subs.styles.items()},
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"events": [ev.as_dict() for ev in subs.events]
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}
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json.dump(data, fp, cls=EnhancedJSONEncoder)
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