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