Merge pull request #6969 from fricklerhandwerk/refactor-generate-manpage
refactor rendering command documentation to markdown
This commit is contained in:
Théophane Hufschmitt
GitHub
commit
3ae9467d57
2 changed files with 122 additions and 83 deletions
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@ -5,93 +5,106 @@ with import ./utils.nix;
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let
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showCommand =
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{ command, def, filename }:
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''
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**Warning**: This program is **experimental** and its interface is subject to change.
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''
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+ "# Name\n\n"
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+ "`${command}` - ${def.description}\n\n"
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+ "# Synopsis\n\n"
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+ showSynopsis { inherit command; args = def.args; }
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+ (if def.commands or {} != {}
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then
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let
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categories = sort (x: y: x.id < y.id) (unique (map (cmd: cmd.category) (attrValues def.commands)));
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listCommands = cmds:
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concatStrings (map (name:
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"* "
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+ "[`${command} ${name}`](./${appendName filename name}.md)"
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+ " - ${cmds.${name}.description}\n")
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(attrNames cmds));
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in
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"where *subcommand* is one of the following:\n\n"
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# FIXME: group by category
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+ (if length categories > 1
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then
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concatStrings (map
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(cat:
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"**${toString cat.description}:**\n\n"
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+ listCommands (filterAttrs (n: v: v.category == cat) def.commands)
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+ "\n"
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) categories)
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+ "\n"
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else
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listCommands def.commands
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+ "\n")
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else "")
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+ (if def ? doc
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then def.doc + "\n\n"
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else "")
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+ (let s = showOptions def.flags; in
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if s != ""
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then "# Options\n\n${s}"
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else "")
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;
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showCommand = { command, details, filename }:
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let
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result = ''
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> **Warning** \
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> This program is **experimental** and its interface is subject to change.
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# Name
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`${command}` - ${details.description}
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# Synopsis
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${showSynopsis command details.args}
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${maybeSubcommands}
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${maybeDocumentation}
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${maybeOptions}
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'';
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showSynopsis = command: args:
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let
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showArgument = arg: "*${arg.label}*" + (if arg ? arity then "" else "...");
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arguments = concatStringsSep " " (map showArgument args);
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in ''
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`${command}` [*option*...] ${arguments}
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'';
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maybeSubcommands = if details ? commands && details.commands != {}
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then ''
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where *subcommand* is one of the following:
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${subcommands}
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''
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else "";
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subcommands = if length categories > 1
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then listCategories
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else listSubcommands details.commands;
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categories = sort (x: y: x.id < y.id) (unique (map (cmd: cmd.category) (attrValues details.commands)));
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listCategories = concatStrings (map showCategory categories);
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showCategory = cat: ''
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**${toString cat.description}:**
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${listSubcommands (filterAttrs (n: v: v.category == cat) details.commands)}
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'';
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listSubcommands = cmds: concatStrings (attrValues (mapAttrs showSubcommand cmds));
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showSubcommand = name: subcmd: ''
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* [`${command} ${name}`](./${appendName filename name}.md) - ${subcmd.description}
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'';
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maybeDocumentation = if details ? doc then details.doc else "";
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maybeOptions = if details.flags == {} then "" else ''
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# Options
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${showOptions details.flags}
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'';
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showOptions = options:
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let
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showCategory = cat: ''
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${if cat != "" then "**${cat}:**" else ""}
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${listOptions (filterAttrs (n: v: v.category == cat) options)}
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'';
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listOptions = opts: concatStringsSep "\n" (attrValues (mapAttrs showOption opts));
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showOption = name: option:
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let
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shortName = if option ? shortName then "/ `-${option.shortName}`" else "";
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labels = if option ? labels then (concatStringsSep " " (map (s: "*${s}*") option.labels)) else "";
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in trim ''
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- `--${name}` ${shortName} ${labels}
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${option.description}
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'';
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categories = sort builtins.lessThan (unique (map (cmd: cmd.category) (attrValues options)));
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in concatStrings (map showCategory categories);
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in squash result;
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appendName = filename: name: (if filename == "nix" then "nix3" else filename) + "-" + name;
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showOptions = flags:
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processCommand = { command, details, filename }:
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let
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categories = sort builtins.lessThan (unique (map (cmd: cmd.category) (attrValues flags)));
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in
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concatStrings (map
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(cat:
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(if cat != ""
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then "**${cat}:**\n\n"
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else "")
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+ concatStrings
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(map (longName:
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let
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flag = flags.${longName};
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in
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" - `--${longName}`"
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+ (if flag ? shortName then " / `-${flag.shortName}`" else "")
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+ (if flag ? labels then " " + (concatStringsSep " " (map (s: "*${s}*") flag.labels)) else "")
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+ " \n"
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+ " " + flag.description + "\n\n"
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) (attrNames (filterAttrs (n: v: v.category == cat) flags))))
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categories);
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cmd = {
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inherit command;
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name = filename + ".md";
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value = showCommand { inherit command details filename; };
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};
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subcommand = subCmd: processCommand {
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command = command + " " + subCmd;
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details = details.commands.${subCmd};
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filename = appendName filename subCmd;
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};
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in [ cmd ] ++ concatMap subcommand (attrNames details.commands or {});
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showSynopsis =
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{ command, args }:
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"`${command}` [*option*...] ${concatStringsSep " "
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(map (arg: "*${arg.label}*" + (if arg ? arity then "" else "...")) args)}\n\n";
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manpages = processCommand {
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command = "nix";
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details = builtins.fromJSON command;
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filename = "nix";
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};
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processCommand = { command, def, filename }:
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[ { name = filename + ".md"; value = showCommand { inherit command def filename; }; inherit command; } ]
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++ concatMap
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(name: processCommand {
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filename = appendName filename name;
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command = command + " " + name;
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def = def.commands.${name};
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})
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(attrNames def.commands or {});
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tableOfContents = let
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showEntry = page:
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" - [${page.command}](command-ref/new-cli/${page.name})";
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in concatStringsSep "\n" (map showEntry manpages) + "\n";
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in
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let
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manpages = processCommand { filename = "nix"; command = "nix"; def = builtins.fromJSON command; };
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summary = concatStrings (map (manpage: " - [${manpage.command}](command-ref/new-cli/${manpage.name})\n") manpages);
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in
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(listToAttrs manpages) // { "SUMMARY.md" = summary; }
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in (listToAttrs manpages) // { "SUMMARY.md" = tableOfContents; }
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@ -5,6 +5,32 @@ rec {
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concatStrings = concatStringsSep "";
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replaceStringsRec = from: to: string:
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# recursively replace occurrences of `from` with `to` within `string`
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# example:
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# replaceStringRec "--" "-" "hello-----world"
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# => "hello-world"
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let
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replaced = replaceStrings [ from ] [ to ] string;
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in
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if replaced == string then string else replaceStringsRec from to replaced;
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squash = replaceStringsRec "\n\n\n" "\n\n";
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trim = string:
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# trim trailing spaces and squash non-leading spaces
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let
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trimLine = line:
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let
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# separate leading spaces from the rest
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parts = split "(^ *)" line;
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spaces = head (elemAt parts 1);
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rest = elemAt parts 2;
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# drop trailing spaces
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body = head (split " *$" rest);
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in spaces + replaceStringsRec " " " " body;
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in concatStringsSep "\n" (map trimLine (splitLines string));
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# FIXME: O(n^2)
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unique = foldl' (acc: e: if elem e acc then acc else acc ++ [ e ]) [];
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