diff options
| author | lucasew <lucas59356@gmail.com> | 2023-11-10 14:40:00 -0300 |
|---|---|---|
| committer | woojiq <yurii.shymon@gmail.com> | 2024-06-28 20:53:53 +0300 |
| commit | 52cc703bba09dd314b1a09f45ce59c67a3919bb8 (patch) | |
| tree | c3e9899fb89d84d70597330e93d93200fc1b1c55 /lib | |
| parent | gitignore: add .helix config directory (diff) | |
| download | nixpkgs-52cc703bba09dd314b1a09f45ce59c67a3919bb8.tar.gz | |
lib: add fromHexString
Co-authored-by: lucasew <lucas59356@gmail.com>
Diffstat (limited to 'lib')
| -rw-r--r-- | lib/default.nix | 2 | ||||
| -rw-r--r-- | lib/tests/misc.nix | 16 | ||||
| -rw-r--r-- | lib/trivial.nix | 26 |
3 files changed, 43 insertions, 1 deletions
diff --git a/lib/default.nix b/lib/default.nix index 9c6f886c9ee4..b209544050cc 100644 --- a/lib/default.nix +++ b/lib/default.nix @@ -73,7 +73,7 @@ let info showWarnings nixpkgsVersion version isInOldestRelease mod compare splitByAndCompare seq deepSeq lessThan add sub functionArgs setFunctionArgs isFunction toFunction mirrorFunctionArgs - toHexString toBaseDigits inPureEvalMode isBool isInt pathExists + fromHexString toHexString toBaseDigits inPureEvalMode isBool isInt pathExists genericClosure readFile; inherit (self.fixedPoints) fix fix' converge extends composeExtensions composeManyExtensions makeExtensible makeExtensibleWithCustomName; diff --git a/lib/tests/misc.nix b/lib/tests/misc.nix index 408ea5416293..dd12923e636e 100644 --- a/lib/tests/misc.nix +++ b/lib/tests/misc.nix @@ -102,6 +102,7 @@ let testAllTrue toBaseDigits toHexString + fromHexString toInt toIntBase10 toShellVars @@ -286,6 +287,21 @@ runTests { expected = "FA"; }; + testFromHexStringFirstExample = { + expr = fromHexString "FF"; + expected = 255; + }; + + testFromHexStringSecondExample = { + expr = fromHexString (builtins.hashString "sha256" "test"); + expected = 9223372036854775807; + }; + + testFromHexStringWithPrefix = { + expr = fromHexString "0Xf"; + expected = 15; + }; + testToBaseDigits = { expr = toBaseDigits 2 6; expected = [ 1 1 0 ]; diff --git a/lib/trivial.nix b/lib/trivial.nix index 20a3ffebbc2b..9ac996881df7 100644 --- a/lib/trivial.nix +++ b/lib/trivial.nix @@ -1075,6 +1075,32 @@ in { else k: v; /** + Convert a hexadecimal string to it's integer representation. + + # Type + + ``` + fromHexString :: String -> [ String ] + ``` + + # Examples + + ```nix + fromHexString "FF" + => 255 + + fromHexString (builtins.hashString "sha256" "test") + => 9223372036854775807 + ``` + */ + fromHexString = value: + let + noPrefix = lib.strings.removePrefix "0x" (lib.strings.toLower value); + in let + parsed = builtins.fromTOML "v=0x${noPrefix}"; + in parsed.v; + + /** Convert the given positive integer to a string of its hexadecimal representation. For example: |