23 lines
378 B
Nix
23 lines
378 B
Nix
{ lib, ... }:
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with builtins;
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with lib;
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rec {
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escape =
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let
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isSafeChar = c: match "[-./0-9_a-zA-Z]" c != null;
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in
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stringAsChars (c:
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if isSafeChar c then c
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else if c == "\n" then "'\n'"
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else "\\${c}");
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#
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# shell script generators
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#
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# example: "${cat (toJSON { foo = "bar"; })} | jq -r .foo"
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cat = s: "printf '%s' ${escape s}";
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}
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