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26 lines
818 B
Python
26 lines
818 B
Python
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"""Helper to load configuration from JSON files."""
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def _load_json_impl(repository_ctx):
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"""Create a starlark equivalent of a parsed JSON file
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Args:
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repository_ctx: repository context
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"""
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json_data = json.decode(repository_ctx.read(repository_ctx.attr.src))
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repository_ctx.file("BUILD", "exports_files([ \"json.bzl\"])")
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repository_ctx.file("json.bzl", "{}={}".format(
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repository_ctx.attr.variable_name,
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repr(json_data),
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))
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load_json = repository_rule(
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implementation = _load_json_impl,
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attrs = {
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"src": attr.label(allow_single_file = True, default = "//:example-file.json", doc = "a JSON file"),
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"variable_name": attr.string(default = "version_json", doc = "symbol to define by the contents of the JSON file"),
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},
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local = True,
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)
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