aboutsummaryrefslogtreecommitdiff
path: root/doc/manual/generate-manpage.nix
blob: 86f2ca567541d51b83d12be1d7c9b6ca9077d64b (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
cliDumpStr:

with builtins;
with import ./utils.nix;

let

  showCommand = { command, details, filename, toplevel }:
    let

      result = ''
        > **Warning** \
        > This program is **experimental** and its interface is subject to change.

        # Name

        `${command}` - ${details.description}

        # Synopsis

        ${showSynopsis command details.args}

        ${maybeSubcommands}

        ${maybeDocumentation}

        ${maybeOptions}
      '';

      showSynopsis = command: args:
        let
          showArgument = arg: "*${arg.label}*" + (if arg ? arity then "" else "...");
          arguments = concatStringsSep " " (map showArgument args);
        in ''
         `${command}` [*option*...] ${arguments}
        '';

      maybeSubcommands = if details ? commands && details.commands != {}
        then ''
           where *subcommand* is one of the following:

           ${subcommands}
         ''
        else "";

      subcommands = if length categories > 1
        then listCategories
        else listSubcommands details.commands;

      categories = sort (x: y: x.id < y.id) (unique (map (cmd: cmd.category) (attrValues details.commands)));

      listCategories = concatStrings (map showCategory categories);

      showCategory = cat: ''
        **${toString cat.description}:**

        ${listSubcommands (filterAttrs (n: v: v.category == cat) details.commands)}
      '';

      listSubcommands = cmds: concatStrings (attrValues (mapAttrs showSubcommand cmds));

      showSubcommand = name: subcmd: ''
        * [`${command} ${name}`](./${appendName filename name}.md) - ${subcmd.description}
      '';

      maybeDocumentation =
        if details ? doc
        then replaceStrings ["@stores@"] [storeDocs] details.doc
        else "";

      maybeOptions = if details.flags == {} then "" else ''
        # Options

        ${showOptions details.flags toplevel.flags}
      '';

      showOptions = options: commonOptions:
        let
          allOptions = options // commonOptions;
          showCategory = cat: ''
            ${if cat != "" then "**${cat}:**" else ""}

            ${listOptions (filterAttrs (n: v: v.category == cat) allOptions)}
            '';
          listOptions = opts: concatStringsSep "\n" (attrValues (mapAttrs showOption opts));
          showOption = name: option:
            let
              shortName = if option ? shortName then "/ `-${option.shortName}`" else "";
              labels = if option ? labels then (concatStringsSep " " (map (s: "*${s}*") option.labels)) else "";
            in trim ''
              - `--${name}` ${shortName} ${labels}

                ${option.description}
            '';
          categories = sort builtins.lessThan (unique (map (cmd: cmd.category) (attrValues allOptions)));
        in concatStrings (map showCategory categories);
    in squash result;

  appendName = filename: name: (if filename == "nix" then "nix3" else filename) + "-" + name;

  processCommand = { command, details, filename, toplevel }:
    let
      cmd = {
        inherit command;
        name = filename + ".md";
        value = showCommand { inherit command details filename toplevel; };
      };
      subcommand = subCmd: processCommand {
        command = command + " " + subCmd;
        details = details.commands.${subCmd};
        filename = appendName filename subCmd;
        inherit toplevel;
      };
    in [ cmd ] ++ concatMap subcommand (attrNames details.commands or {});

  cliDump = builtins.fromJSON cliDumpStr;

  manpages = processCommand {
    command = "nix";
    details = cliDump.args;
    filename = "nix";
    toplevel = cliDump.args;
  };

  tableOfContents = let
    showEntry = page:
      "    - [${page.command}](command-ref/new-cli/${page.name})";
    in concatStringsSep "\n" (map showEntry manpages) + "\n";

  storeDocs =
    let
      showStore = name: { settings, doc }:
        ''
          ## ${name}

          ${doc}

          **Settings**:

          ${showSettings { useAnchors = false; } settings}
        '';
    in concatStrings (attrValues (mapAttrs showStore cliDump.stores));

in (listToAttrs manpages) // { "SUMMARY.md" = tableOfContents; }