17 lines
663 B
Nix
17 lines
663 B
Nix
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{ lib, pkgs, ... }:
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let
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stripTabs = text: let
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# Whether all lines start with a tab (or is empty)
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shouldStripTab = lines: builtins.all (line: (line == "") || (pkgs.lib.strings.hasPrefix " " line)) lines;
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# Strip a leading tab from all lines
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stripTab = lines: builtins.map (line: pkgs.lib.strings.removePrefix " " line) lines;
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# Strip tabs recursively until there are none
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stripTabs = lines: if (shouldStripTab lines) then (stripTabs (stripTab lines)) else lines;
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in
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# Split into lines. Strip leading tabs. Concat back to string.
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builtins.concatStringsSep "\n" (stripTabs (pkgs.lib.strings.splitString "\n" text));
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in {
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stripTabs = stripTabs;
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}
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