26 lines
636 B
Python
26 lines
636 B
Python
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"""
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Webp image building.
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"""
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def webp_image(src, name = None, out = None, quality = 95, flags = None):
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"""Use cwebp to convert the image to an output."""
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out = out or src.split(".", 1)[0] + ".webp"
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name = name or out.replace(".", "_")
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return native.genrule(
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name = name,
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srcs = [src],
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outs = [out],
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cmd = "cwebp {} $< -o $@".format(
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" ".join([str(i) for i in (flags or ["-q", quality])])
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)
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)
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def auto_webps(srcs):
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"""Generate webp targets automagically for a mess of files."""
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for f in srcs:
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webp_image(
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src = f,
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)
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