52 lines
1.5 KiB
Python
52 lines
1.5 KiB
Python
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from typing import Any, cast, Callable, Final
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import json
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import osdk.shell as shell
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Json = Any
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Builtin = Callable[..., Json]
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BUILTINS: Final[dict[str, Builtin]] = {
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"uname": lambda arg: getattr(shell.uname(), arg).lower(),
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"include": lambda arg: evalRead(arg),
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"evalRead": lambda arg: evalRead(arg),
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"join": lambda lhs, rhs: cast(Json, {**lhs, **rhs} if isinstance(lhs, dict) else lhs + rhs),
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"concat": lambda *args: "".join(args),
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"eval": lambda arg: eval(arg),
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"read": lambda arg: read(arg),
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"exec": lambda *args: shell.popen(*args).splitlines(),
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"latest": lambda arg: shell.latest(arg),
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}
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def eval(jexpr: Json) -> Json:
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if isinstance(jexpr, dict):
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result = {}
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for k in cast(dict[str, Json], jexpr):
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result[k] = eval(jexpr[k])
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return cast(Json, result)
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elif isinstance(jexpr, list):
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jexpr = cast(list[Json], jexpr)
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if len(jexpr) > 0 and isinstance(jexpr[0], str) and jexpr[0].startswith("@"):
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funcName = jexpr[0][1:]
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if funcName in BUILTINS:
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return BUILTINS[funcName](*eval(jexpr[1:]))
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raise Exception(f"Unknown macro {funcName}")
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else:
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return list(map(eval, jexpr))
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else:
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return jexpr
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def read(path: str) -> Json:
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try:
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with open(path, "r") as f:
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return json.load(f)
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except:
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raise Exception(f"Failed to read {path}")
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def evalRead(path: str) -> Json:
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return eval(read(path))
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