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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,123 @@ | ||
| { system ? builtins.currentSystem | ||
| , pkgs ? import ../nixpkgs.nix { inherit system; } | ||
| }: | ||
| let | ||
| lib = builtins // pkgs.lib; | ||
| in | ||
| rec { | ||
| ansi = import ../ansi.nix; | ||
|
|
||
| writeDefaultShellScript = import ../writeDefaultShellScript.nix { | ||
| inherit (pkgs) lib writeTextFile bash; | ||
| }; | ||
|
|
||
| devshellMenuCommandName = "menu"; | ||
|
|
||
| pad = str: num: | ||
| if num > 0 then | ||
| pad "${str} " (num - 1) | ||
| else | ||
| str; | ||
|
|
||
| resolveName = cmd: | ||
| if cmd.name == null then | ||
| cmd.package.pname or (lib.parseDrvName cmd.package.name).name | ||
| else | ||
| cmd.name; | ||
|
|
||
| commandsMessage = "[[commands]]:"; | ||
|
|
||
| # Fill in default options for a command. | ||
| commandToPackage = cmd: | ||
| if cmd.name != devshellMenuCommandName && cmd.command == null && cmd.package == null then null | ||
| else | ||
| assert lib.assertMsg (cmd.command == null || cmd.name != cmd.command) "${commandsMessage} in ${lib.generators.toPretty {} cmd}, ${toString cmd.name} cannot be set to both the `name` and the `command` attributes. Did you mean to use the `package` attribute?"; | ||
| assert lib.assertMsg ((cmd.package != null && cmd.command == null) || (cmd.command != null && cmd.command != "" && cmd.package == null)) "${commandsMessage} ${lib.generators.toPretty {} cmd} expected either a non-empty command or a package attribute, not both."; | ||
| if cmd.package == null | ||
| then | ||
| writeDefaultShellScript | ||
| { | ||
| name = cmd.name; | ||
| text = cmd.command; | ||
| binPrefix = true; | ||
| } | ||
| else if !cmd.expose | ||
| then null | ||
| else cmd.package; | ||
|
|
||
| commandsToMenu = cmds: | ||
| let | ||
| cleanName = { name, package, ... }@cmd: | ||
| if | ||
| cmd.package == null && (cmd.name != devshellMenuCommandName && cmd.command == null) | ||
| && (cmd.prefix != "" || (cmd.name != null && cmd.name != "")) | ||
| && cmd.help != null | ||
| then | ||
| cmd // { | ||
| name = "${ | ||
| if cmd.prefix != null then cmd.prefix else "" | ||
| }${ | ||
| if cmd.name != null then cmd.name else "" | ||
| }"; | ||
| } | ||
| else | ||
| assert lib.assertMsg (cmd.name != null || cmd.package != null) "${commandsMessage} some command is missing a `name`, a `prefix`, and a `package` attributes."; | ||
| let | ||
| name = lib.pipe cmd [ | ||
| resolveName | ||
| (x: if x != null && lib.hasInfix " " x then "'${x}'" else x) | ||
| (x: "${cmd.prefix}${x}") | ||
| ]; | ||
|
|
||
| help = | ||
| if cmd.help == null then | ||
| cmd.package.meta.description or "" | ||
| else | ||
| cmd.help; | ||
| in | ||
| cmd // { | ||
| inherit name help; | ||
| }; | ||
|
|
||
| commands = map cleanName cmds; | ||
|
|
||
| commandLengths = | ||
| map ({ name, ... }: lib.stringLength name) commands; | ||
|
|
||
| maxCommandLength = | ||
| lib.foldl' | ||
| (max: v: if v > max then v else max) | ||
| 0 | ||
| commandLengths | ||
| ; | ||
|
|
||
| commandCategories = lib.unique ( | ||
| (lib.zipAttrsWithNames [ "category" ] (_: vs: vs) commands).category | ||
| ); | ||
|
|
||
| commandByCategoriesSorted = | ||
| lib.attrValues (lib.genAttrs | ||
| commandCategories | ||
| (category: lib.nameValuePair category (lib.sort | ||
| (a: b: a.name < b.name) | ||
| (lib.filter (x: x.category == category) commands) | ||
| )) | ||
| ); | ||
|
|
||
| opCat = kv: | ||
| let | ||
| category = kv.name; | ||
| cmd = kv.value; | ||
| opCmd = { name, help, ... }: | ||
| let | ||
| len = maxCommandLength - (lib.stringLength name); | ||
| in | ||
| if help == null || help == "" then | ||
| " ${name}" | ||
| else | ||
| " ${pad name len} - ${help}"; | ||
| in | ||
| "\n${ansi.bold}[${category}]${ansi.reset}\n\n" + lib.concatStringsSep "\n" (map opCmd cmd); | ||
| in | ||
| lib.concatStringsSep "\n" (map opCat commandByCategoriesSorted) + "\n"; | ||
| } |
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