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nixpkgs.lib: Add types.strMatching

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This commit is contained in:
Ryan Trinkle 2017-12-02 13:04:16 -05:00
parent 6281eb123b
commit 83048c4fe0
2 changed files with 13 additions and 0 deletions
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7
lib/types.nix
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@ -174,6 +174,13 @@ rec {
merge = mergeOneOption;
};
strMatching = pattern: mkOptionType {
name = "strMatching ${escapeNixString pattern}";
description = "string matching the pattern ${pattern}";
check = x: str.check x && builtins.match pattern x != null;
inherit (str) merge;
};
# Merge multiple definitions by concatenating them (with the given
# separator between the values).
separatedString = sep: mkOptionType rec {

6
nixos/doc/manual/development/option-types.xml
View file

@ -110,6 +110,12 @@
<listitem><para>A string. Multiple definitions are concatenated with a
collon <literal>":"</literal>.</para></listitem>
</varlistentry>
<varlistentry>
<term><varname>types.strMatching</varname></term>
<listitem><para>A string matching a specific regular expression. Multiple
definitions cannot be merged. The regular expression is processed using
<literal>builtins.match</literal>.</para></listitem>
</varlistentry>
</variablelist>
</section>