21 lines
886 B
Python
21 lines
886 B
Python
# Copyright (c) Meta Platforms, Inc. and affiliates.
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#
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# This source code is licensed under both the MIT license found in the
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# LICENSE-MIT file in the root directory of this source tree and the Apache
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# License, Version 2.0 found in the LICENSE-APACHE file in the root directory
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# of this source tree.
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# Implementation of the `export_file` build rule.
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def export_file_impl(ctx: "context") -> [DefaultInfo.type]:
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# mode is "copy" or "reference", defaulting to copy
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copy = ctx.attrs.mode != "reference"
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if copy:
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dest = ctx.label.name if ctx.attrs.out == None else ctx.attrs.out
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output = ctx.actions.copy_file(dest, ctx.attrs.src)
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elif ctx.attrs.out != None:
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fail("export_file does not allow specifying `out` without also specifying `mode = 'copy'`")
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else:
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output = ctx.attrs.src
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return [DefaultInfo(default_outputs = [output])]
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