toGitINI

lib.generators.toGitINI

Docs pulled from | This Revision | 4 days ago

Generate a git-config file from an attrset.

It has two major differences from the regular INI format:

values are indented with tabs
sections can have sub-sections

Further: https://git-scm.com/docs/git-config#EXAMPLES

Examples

`lib.generators.toGitINI` usage example

generators.toGitINI {
  url."ssh://[email protected]/".insteadOf = "https://github.com";
  user.name = "edolstra";
}

> [url "ssh://[email protected]/"]
>   insteadOf = "https://github.com"
>
> [user]
>   name = "edolstra"

Inputs

attrs: Key-value pairs to be converted to a git-config file. See: https://git-scm.com/docs/git-config#_variables for possible values.

Noogle detected

Implementation

The following is the current implementation of this function.

toGitINI =
    attrs:
    let
      mkSectionName =
        name:
        let
          containsQuote = hasInfix ''"'' name;
          sections = splitString "." name;
          section = head sections;
          subsections = tail sections;
          subsection = concatStringsSep "." subsections;
        in
        if containsQuote || subsections == [ ] then name else ''${section} "${subsection}"'';

      mkValueString =
        v:
        let
          escapedV = ''"${replaceStrings [ "\n" "	" ''"'' "\\" ] [ "\\n" "\\t" ''\"'' "\\\\" ] v}"'';
        in
        mkValueStringDefault { } (if isString v then escapedV else v);

      # generation for multiple ini values
      mkKeyValue =
        k: v:
        let
          mkKeyValue = mkKeyValueDefault { inherit mkValueString; } " = " k;
        in
        concatStringsSep "\n" (map (kv: "\t" + mkKeyValue kv) (toList v));

      # converts { a.b.c = 5; } to { "a.b".c = 5; } for toINI
      gitFlattenAttrs =
        let
          recurse =
            path: value:
            if isAttrs value && !isDerivation value then
              mapAttrsToList (name: value: recurse ([ name ] ++ path) value) value
            else if length path > 1 then
              {
                ${concatStringsSep "." (reverseList (tail path))}.${head path} = value;
              }
            else
              {
                ${head path} = value;
              };
        in
        attrs: foldl recursiveUpdate { } (flatten (recurse [ ] attrs));

      toINI_ = toINI { inherit mkKeyValue mkSectionName; };
    in
    toINI_ (gitFlattenAttrs attrs);