diff options
Diffstat (limited to 'lib/default.nix')
| -rw-r--r-- | lib/default.nix | 44 |
1 files changed, 40 insertions, 4 deletions
diff --git a/lib/default.nix b/lib/default.nix index 348d47e85..347830e8c 100644 --- a/lib/default.nix +++ b/lib/default.nix @@ -5,6 +5,7 @@ let evalSource = import ./eval-source.nix; git = import ./git.nix { inherit lib; }; + krebs = import ./krebs lib; krops = import ../submodules/krops/lib; shell = import ./shell.nix { inherit lib; }; types = nixpkgs-lib.types // import ./types.nix { inherit lib; }; @@ -28,8 +29,6 @@ let listToAttrs (map (name: nameValuePair name set.${name}) (filter (flip hasAttr set) names)); - setAttr = name: value: set: set // { ${name} = value; }; - test = re: x: isString x && testString re x; testString = re: x: match re x != null; @@ -94,7 +93,13 @@ let in if max.pos == 0 then a - else "${concatStringsSep ":" lhs}::${concatStringsSep ":" rhs}"; + else let + sep = + if 8 - (length lhs + length rhs) == 1 + then ":0:" + else "::"; + in + "${concatStringsSep ":" lhs}${sep}${concatStringsSep ":" rhs}"; drop-leading-zeros = let @@ -108,7 +113,38 @@ let in a: concatStringsSep ":" (map f (splitString ":" a)); in - a: toLower (group-zeros (drop-leading-zeros a)); + a: + toLower + (if test ".*::.*" a + then a + else group-zeros (drop-leading-zeros a)); + + hashToLength = n: s: substring 0 n (hashString "sha256" s); + + dropLast = n: xs: reverseList (drop n (reverseList xs)); + takeLast = n: xs: reverseList (take n (reverseList xs)); + + # Split string into list of chunks where each chunk is at most n chars long. + # The leftmost chunk might shorter. + # Example: stringToGroupsOf "123456" -> ["12" "3456"] + stringToGroupsOf = n: s: let + acc = + foldl' + (acc: c: if stringLength acc.chunk < n then { + chunk = acc.chunk + c; + chunks = acc.chunks; + } else { + chunk = c; + chunks = acc.chunks ++ [acc.chunk]; + }) + { + chunk = ""; + chunks = []; + } + (stringToCharacters s); + in + filter (x: x != []) ([acc.chunk] ++ acc.chunks); + }; in |