64 lines
1.4 KiB
Nix
64 lines
1.4 KiB
Nix
/* Version string functions. */
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{ lib }:
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rec {
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/* Break a version string into its component parts.
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Example:
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splitVersion "1.2.3"
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=> ["1" "2" "3"]
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*/
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splitVersion = builtins.splitVersion or (lib.splitString ".");
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/* Get the major version string from a string.
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Example:
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major "1.2.3"
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=> "1"
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*/
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major = v: builtins.elemAt (splitVersion v) 0;
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/* Get the minor version string from a string.
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Example:
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minor "1.2.3"
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=> "2"
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*/
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minor = v: builtins.elemAt (splitVersion v) 1;
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/* Get the patch version string from a string.
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Example:
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patch "1.2.3"
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=> "3"
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*/
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patch = v: builtins.elemAt (splitVersion v) 2;
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/* Get string of the first two parts (major and minor)
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of a version string.
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Example:
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majorMinor "1.2.3"
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=> "1.2"
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*/
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majorMinor = v:
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builtins.concatStringsSep "."
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(lib.take 2 (splitVersion v));
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/* Pad a version string with zeros to match the given number of components.
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Example:
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pad 3 "1.2"
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=> "1.2.0"
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pad 3 "1.3-rc1"
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=> "1.3.0-rc1"
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pad 3 "1.2.3.4"
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=> "1.2.3"
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*/
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pad = n: version: let
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numericVersion = lib.head (lib.splitString "-" version);
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versionSuffix = lib.removePrefix numericVersion version;
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in lib.concatStringsSep "." (lib.take n (lib.splitVersion numericVersion ++ lib.genList (_: "0") n)) + versionSuffix;
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}
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