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37 lines
876 B
Python
37 lines
876 B
Python
def string_value(ctx, define_name):
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"""Looks up a define on ctx for a string value.
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Will also report an error if the value is not defined.
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Args:
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ctx: A skylark context.
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define_name: The name of the define to look up.
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Returns:
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The value of the define.
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"""
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value = ctx.var.get(define_name, None)
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if value != None:
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return value
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fail("Expected value for --define={} was not found".format(
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define_name,
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))
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def _file_from_define(ctx):
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output = ctx.outputs.out
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ctx.actions.write(
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output = output,
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content = "profile_data",
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)
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file_from_define = rule(
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implementation = _file_from_define,
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attrs = {
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"define_name": attr.string(mandatory = True),
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"extension": attr.string(mandatory = True),
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},
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outputs = {
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"out": "%{name}.%{extension}"
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},
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)
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