mirror of https://cgit.krebsco.de/krops
55 lines
1.6 KiB
Nix
55 lines
1.6 KiB
Nix
{ lib }: rec {
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# RFC952, B. Lexical grammar, <hname>
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hostname = lib.mkOptionType {
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name = "hostname";
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check = x: lib.isString x && lib.all label.check (lib.splitString "." x);
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merge = lib.mergeOneOption;
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};
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# RFC952, B. Lexical grammar, <name>
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# RFC1123, 2.1 Host Names and Numbers
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label = lib.mkOptionType {
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name = "label";
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# TODO case-insensitive labels
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check = lib.test "[0-9A-Za-z]([0-9A-Za-z-]*[0-9A-Za-z])?";
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merge = lib.mergeOneOption;
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};
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# POSIX.1‐2013, 3.278 Portable Filename Character Set
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filename = lib.mkOptionType {
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name = "POSIX filename";
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check = lib.test "([0-9A-Za-z._])[0-9A-Za-z._-]*";
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merge = lib.mergeOneOption;
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};
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# POSIX.1‐2013, 3.2 Absolute Pathname
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absolute-pathname = lib.mkOptionType {
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name = "POSIX absolute pathname";
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check = x: lib.isString x && lib.substring 0 1 x == "/" && pathname.check x;
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merge = lib.mergeOneOption;
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};
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# POSIX.1‐2013, 3.267 Pathname
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pathname = lib.mkOptionType {
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name = "POSIX pathname";
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check = x:
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let
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# The filter is used to normalize paths, i.e. to remove duplicated and
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# trailing slashes. It also removes leading slashes, thus we have to
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# check for "/" explicitly below.
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xs = lib.filter (s: lib.stringLength s > 0) (lib.splitString "/" x);
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in
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lib.isString x && (x == "/" || (lib.length xs > 0 && lib.all filename.check xs));
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merge = lib.mergeOneOption;
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};
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# POSIX.1-2013, 3.431 User Name
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username = lib.mkOptionType {
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name = "POSIX username";
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check = filename.check;
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merge = lib.mergeOneOption;
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};
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}
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