lix-releng-staging/doc/manual/generate-manpage.nix
Eelco Dolstra 39bc49318f jq -> nix
2020-09-16 14:58:06 +02:00

57 lines
1.7 KiB
Nix

with builtins;
with import ./utils.nix;
let
showCommand =
{ command, section, def }:
"${section} Name\n\n"
+ "`${command}` - ${def.description}\n\n"
+ "${section} Synopsis\n\n"
+ showSynopsis { inherit command; args = def.args; }
+ (if def ? doc
then "${section} Description\n\n" + def.doc + "\n\n"
else "")
+ (let s = showFlags def.flags; in
if s != ""
then "${section} Flags\n\n${s}"
else "")
+ (if def.examples or [] != []
then
"${section} Examples\n\n"
+ concatStrings (map ({ description, command }: "${description}\n\n```console\n${command}\n```\n\n") def.examples)
else "")
+ (if def.commands or [] != []
then concatStrings (
map (name:
"# Subcommand `${command} ${name}`\n\n"
+ showCommand { command = command + " " + name; section = "##"; def = def.commands.${name}; })
(attrNames def.commands))
else "");
showFlags = flags:
concatStrings
(map (longName:
let flag = flags.${longName}; in
if flag.category or "" != "config"
then
" - `--${longName}`"
+ (if flag ? shortName then " / `${flag.shortName}`" else "")
+ (if flag ? labels then " " + (concatStringsSep " " (map (s: "*${s}*") flag.labels)) else "")
+ " \n"
+ " " + flag.description + "\n\n"
else "")
(attrNames flags));
showSynopsis =
{ command, args }:
"`${command}` [*flags*...] ${concatStringsSep " "
(map (arg: "*${arg.label}*" + (if arg ? arity then "" else "...")) args)}\n\n";
in
command:
"Title: nix\n\n"
+ showCommand { command = "nix"; section = "#"; def = command; }