39 lines
838 B
Python
39 lines
838 B
Python
import json
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from bonobo.config.processors import ContextProcessor, contextual
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from .file import FileWriter, FileReader
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__all__ = [
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'JsonWriter',
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]
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class JsonHandler():
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eol = ',\n'
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prefix, suffix = '[', ']'
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class JsonReader(JsonHandler, FileReader):
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loader = staticmethod(json.load)
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def read(self, fs, file):
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for line in self.loader(file):
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yield line
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class JsonWriter(JsonHandler, FileWriter):
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@ContextProcessor
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def envelope(self, context, fs, file, lineno):
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file.write(self.prefix)
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yield
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file.write(self.suffix)
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def write(self, fs, file, lineno, row):
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"""
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Write a json row on the next line of file pointed by ctx.file.
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:param ctx:
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:param row:
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"""
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return super().write(fs, file, lineno, json.dumps(row))
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