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Add optionalString to manual Nix lang utilities

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Use it everywhere it could be also.
This commit is contained in:
John Ericson 2023-04-16 10:44:03 -04:00
parent ab228d73db
commit ba9ae691b6
2 changed files with 18 additions and 14 deletions
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28
doc/manual/generate-manpage.nix
View file

@ -31,19 +31,18 @@ let
showSynopsis = command: args: showSynopsis = command: args:
let let
showArgument = arg: "*${arg.label}*" + (if arg ? arity then "" else "..."); showArgument = arg: "*${arg.label}*" + optionalString (! arg ? arity) "...";
arguments = concatStringsSep " " (map showArgument args); arguments = concatStringsSep " " (map showArgument args);
in '' in ''
`${command}` [*option*...] ${arguments} `${command}` [*option*...] ${arguments}
''; '';
maybeSubcommands = if details ? commands && details.commands != {} maybeSubcommands = optionalString (details ? commands && details.commands != {})
then '' ''
where *subcommand* is one of the following: where *subcommand* is one of the following:
${subcommands} ${subcommands}
'' '';
else "";
subcommands = if length categories > 1 subcommands = if length categories > 1
then listCategories then listCategories
@ -65,12 +64,11 @@ let
* [`${command} ${name}`](./${appendName filename name}.md) - ${subcmd.description} * [`${command} ${name}`](./${appendName filename name}.md) - ${subcmd.description}
''; '';
maybeDocumentation = maybeDocumentation = optionalString
if details ? doc (details ? doc)
then replaceStrings ["@stores@"] [storeDocs] details.doc (replaceStrings ["@stores@"] [storeDocs] details.doc);
else "";
maybeOptions = if details.flags == {} then "" else '' maybeOptions = optionalString (details.flags != {}) ''
# Options # Options
${showOptions details.flags toplevel.flags} ${showOptions details.flags toplevel.flags}
@ -80,15 +78,19 @@ let
let let
allOptions = options // commonOptions; allOptions = options // commonOptions;
showCategory = cat: '' showCategory = cat: ''
${if cat != "" then "**${cat}:**" else ""} ${optionalString (cat != "") "**${cat}:**"}
${listOptions (filterAttrs (n: v: v.category == cat) allOptions)} ${listOptions (filterAttrs (n: v: v.category == cat) allOptions)}
''; '';
listOptions = opts: concatStringsSep "\n" (attrValues (mapAttrs showOption opts)); listOptions = opts: concatStringsSep "\n" (attrValues (mapAttrs showOption opts));
showOption = name: option: showOption = name: option:
let let
shortName = if option ? shortName then "/ `-${option.shortName}`" else ""; shortName = optionalString
labels = if option ? labels then (concatStringsSep " " (map (s: "*${s}*") option.labels)) else ""; (option ? shortName)
("/ `-${option.shortName}`");
labels = optionalString
(option ? labels)
(concatStringsSep " " (map (s: "*${s}*") option.labels));
in trim '' in trim ''
- `--${name}` ${shortName} ${labels} - `--${name}` ${shortName} ${labels}

4
doc/manual/utils.nix
View file

@ -42,6 +42,8 @@ rec {
filterAttrs = pred: set: filterAttrs = pred: set:
listToAttrs (concatMap (name: let v = set.${name}; in if pred name v then [(nameValuePair name v)] else []) (attrNames set)); listToAttrs (concatMap (name: let v = set.${name}; in if pred name v then [(nameValuePair name v)] else []) (attrNames set));
optionalString = cond: string: if cond then string else "";
showSetting = { useAnchors }: name: { description, documentDefault, defaultValue, aliases, value }: showSetting = { useAnchors }: name: { description, documentDefault, defaultValue, aliases, value }:
let let
result = squash '' result = squash ''
@ -74,7 +76,7 @@ rec {
else "*machine-specific*"; else "*machine-specific*";
showAliases = aliases: showAliases = aliases:
if aliases == [] then "" else optionalString (aliases != [])
"**Deprecated alias:** ${(concatStringsSep ", " (map (s: "`${s}`") aliases))}"; "**Deprecated alias:** ${(concatStringsSep ", " (map (s: "`${s}`") aliases))}";
in result; in result;