Module: Homebrew::Manpages Private

Defined in:
manpages.rb,
manpages/parser/ronn.rb,
manpages/converter/roff.rb,
manpages/converter/kramdown.rb

Overview

This module is part of a private API. This module may only be used in the Homebrew/brew repository. Third parties should avoid using this module if possible, as it may be removed or changed without warning.

Helper functions for generating homebrew manual.

Defined Under Namespace

Modules: Converter, Parser Classes: Variables

Constant Summary collapse

SOURCE_PATH =

This constant is part of a private API. This constant may only be used in the Homebrew/brew repository. Third parties should avoid using this constant if possible, as it may be removed or changed without warning. 

T.let((HOMEBREW_LIBRARY_PATH/"manpages").freeze, Pathname)
TARGET_MAN_PATH =

This constant is part of a private API. This constant may only be used in the Homebrew/brew repository. Third parties should avoid using this constant if possible, as it may be removed or changed without warning. 

T.let((HOMEBREW_REPOSITORY/"manpages").freeze, Pathname)
TARGET_DOC_PATH =

This constant is part of a private API. This constant may only be used in the Homebrew/brew repository. Third parties should avoid using this constant if possible, as it may be removed or changed without warning. 

T.let((HOMEBREW_REPOSITORY/"docs").freeze, Pathname)

Class Method Summary collapse

Class Method Details

.build_man_page(quiet:) ⇒ String

This method is part of a private API. This method may only be used in the Homebrew/brew repository. Third parties should avoid using this method if possible, as it may be removed or changed without warning.

Parameters:

  • quiet (Boolean)

Returns:



50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
 
# File 'manpages.rb', line 50

def self.build_man_page(quiet:)
  template = (SOURCE_PATH/"brew.1.md.erb").read
  readme = HOMEBREW_REPOSITORY/"README.md"
  variables = Variables.new(
    commands:                   generate_cmd_manpages(Commands.internal_commands_paths),
    developer_commands:         generate_cmd_manpages(Commands.internal_developer_commands_paths),
    official_external_commands: generate_cmd_manpages(Commands.official_external_commands_paths(quiet:)),
    global_cask_options:        global_cask_options_manpage,
    global_options:             global_options_manpage,
    environment_variables:      env_vars_manpage,
    lead:                       readme.read[/(Homebrew's \[Project Leader.*\.)/, 1]
                                  .gsub(/\[([^\]]+)\]\([^)]+\)/, '\1'),
    plc:                        readme.read[/(Homebrew's \[Project Leadership Committee.*\.)/, 1]
                                  .gsub(/\[([^\]]+)\]\([^)]+\)/, '\1'),
    tsc:                        readme.read[/(Homebrew's \[Technical Steering Committee.*\.)/, 1]
                                  .gsub(/\[([^\]]+)\]\([^)]+\)/, '\1'),
    maintainers:                readme.read[/(Homebrew's maintainers .*\.)/, 1]
                                  .gsub(/\[([^\]]+)\]\([^)]+\)/, '\1'),
    alumni:                     readme.read[/(Former maintainers .*\.)/, 1]
                                  .gsub(/\[([^\]]+)\]\([^)]+\)/, '\1'),
  )

  ERB.new(template, trim_mode: ">").result(variables.instance_eval { binding })
end

.cmd_comment_manpage_lines(cmd_path) ⇒ Array<String>?

This method is part of a private API. This method may only be used in the Homebrew/brew repository. Third parties should avoid using this method if possible, as it may be removed or changed without warning.

Parameters:

Returns:



125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
 
# File 'manpages.rb', line 125

def self.cmd_comment_manpage_lines(cmd_path)
  comment_lines = cmd_path.read.lines.grep(/^#:/)
  return if comment_lines.empty?

  first_comment_line = comment_lines.first
  return unless first_comment_line
  return if first_comment_line.include?("@hide_from_man_page")

  lines = [format_usage_banner(first_comment_line).chomp]
  all_but_first_comment_lines = comment_lines.slice(1..-1)
  return unless all_but_first_comment_lines
  return if all_but_first_comment_lines.empty?

  all_but_first_comment_lines.each do |line|
    line = line.slice(4..-2)
    unless line
      lines.last << "\n"
      next
    end

    # Omit the common global_options documented separately in the man page.
    next if line.match?(/--(debug|help|quiet|verbose) /)

    # Format one option or a comma-separated pair of short and long options.
    line.gsub!(/^ +(-+[a-z-]+), (-+[a-z-]+) +(.*)$/, "`\\1`, `\\2`\n\n: \\3\n")
    line.gsub!(/^ +(-+[a-z-]+) +(.*)$/, "`\\1`\n\n: \\2\n")

    lines << line
  end
  lines.last << "\n"
  lines
end

.cmd_parser_manpage_lines(cmd_parser) ⇒ Array<String>

This method is part of a private API. This method may only be used in the Homebrew/brew repository. Third parties should avoid using this method if possible, as it may be removed or changed without warning.

Parameters:

Returns:



105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
 
# File 'manpages.rb', line 105

def self.cmd_parser_manpage_lines(cmd_parser)
  lines = []
  usage_banner_text = cmd_parser.usage_banner_text
  lines << format_usage_banner(usage_banner_text) if usage_banner_text
  lines += cmd_parser.processed_options.filter_map do |short, long, desc, hidden|
    next if hidden

    if long.present?
      next if Homebrew::CLI::Parser.global_options.include?([short, long, desc])
      next if Homebrew::CLI::Parser.global_cask_options.any? do |_, option, kwargs|
                [long, "#{long}="].include?(option) && kwargs.fetch(:description) == desc
              end
    end

    generate_option_doc(short, long, desc)
  end
  lines
end

.env_vars_manpage ⇒ String

This method is part of a private API. This method may only be used in the Homebrew/brew repository. Third parties should avoid using this method if possible, as it may be removed or changed without warning.

Returns:



178
179
180
181
182
183
184
185
186
187
188
 
# File 'manpages.rb', line 178

def self.env_vars_manpage
  lines = Homebrew::EnvConfig::ENVS.flat_map do |env, hash|
    entry = "`#{env}`\n\n: #{hash[:description]}\n"
    default = hash[:default_text]
    default ||= "`#{hash[:default]}`." if hash[:default]
    entry += "\n\n    *Default:* #{default}\n" if default

    entry
  end
  lines.join("\n")
end

.format_opt(opt) ⇒ String?

This method is part of a private API. This method may only be used in the Homebrew/brew repository. Third parties should avoid using this method if possible, as it may be removed or changed without warning.

Parameters:

Returns:



191
192
193
 
# File 'manpages.rb', line 191

def self.format_opt(opt)
  "`#{opt}`" unless opt.nil?
end

.format_usage_banner(usage_banner) ⇒ String

This method is part of a private API. This method may only be used in the Homebrew/brew repository. Third parties should avoid using this method if possible, as it may be removed or changed without warning.

Parameters:

Returns:



213
214
215
216
 
# File 'manpages.rb', line 213

def self.format_usage_banner(usage_banner)
  usage_banner.sub(/^(#: *\* )?/, "### ")
              .gsub(/(?<!`)\[([^\[\]]*)\](?!`)/, "\\[\\1\\]") # escape [] character (except those in code spans)
end

.generate_cmd_manpages(cmd_paths) ⇒ String

This method is part of a private API. This method may only be used in the Homebrew/brew repository. Third parties should avoid using this method if possible, as it may be removed or changed without warning.

Parameters:

Returns:



82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
 
# File 'manpages.rb', line 82

def self.generate_cmd_manpages(cmd_paths)
  man_page_lines = []

  # preserve existing manpage order
  cmd_paths.sort_by { sort_key_for_path(_1) }
           .each do |cmd_path|
    cmd_man_page_lines = if (cmd_parser = Homebrew::CLI::Parser.from_cmd_path(cmd_path))
      next if cmd_parser.hide_from_man_page

      cmd_parser_manpage_lines(cmd_parser).join
    else
      cmd_comment_manpage_lines(cmd_path)&.join("\n")
    end
    # Convert subcommands to definition lists
    cmd_man_page_lines&.gsub!(/(?<=\n\n)([\\?\[`].+):\n/, "\\1\n\n: ")

    man_page_lines << cmd_man_page_lines
  end

  man_page_lines.compact.join("\n")
end

.generate_option_doc(short, long, desc) ⇒ String

This method is part of a private API. This method may only be used in the Homebrew/brew repository. Third parties should avoid using this method if possible, as it may be removed or changed without warning.

Parameters:

Returns:



202
203
204
205
206
207
208
209
210
 
# File 'manpages.rb', line 202

def self.generate_option_doc(short, long, desc)
  comma = (short && long) ? ", " : ""
  <<~EOS
    #{format_opt(short)}#{comma}#{format_opt(long)}

    : #{desc}

  EOS
end

.global_cask_options_manpage ⇒ String

This method is part of a private API. This method may only be used in the Homebrew/brew repository. Third parties should avoid using this method if possible, as it may be removed or changed without warning.

Returns:



159
160
161
162
163
164
165
166
 
# File 'manpages.rb', line 159

def self.global_cask_options_manpage
  lines = ["These options are applicable to the `install`, `reinstall` and `upgrade` " \
           "subcommands with the `--cask` switch.\n"]
  lines += Homebrew::CLI::Parser.global_cask_options.map do |_, long, kwargs|
    generate_option_doc(nil, long.chomp("="), kwargs.fetch(:description))
  end
  lines.join("\n")
end

.global_options_manpage ⇒ String

This method is part of a private API. This method may only be used in the Homebrew/brew repository. Third parties should avoid using this method if possible, as it may be removed or changed without warning.

Returns:



169
170
171
172
173
174
175
 
# File 'manpages.rb', line 169

def self.global_options_manpage
  lines = ["These options are applicable across multiple subcommands.\n"]
  lines += Homebrew::CLI::Parser.global_options.map do |short, long, desc|
    generate_option_doc(short, long, desc)
  end
  lines.join("\n")
end

.regenerate_man_pages(quiet:) ⇒ void

This method is part of a private API. This method may only be used in the Homebrew/brew repository. Third parties should avoid using this method if possible, as it may be removed or changed without warning.

This method returns an undefined value.

Parameters:

  • quiet (Boolean) 


30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
 
# File 'manpages.rb', line 30

def self.regenerate_man_pages(quiet:)
  require "kramdown"
  require "manpages/parser/ronn"
  require "manpages/converter/kramdown"
  require "manpages/converter/roff"

  markup = build_man_page(quiet:)
  root, warnings = Parser::Ronn.parse(markup)
  $stderr.puts(warnings)

  roff, warnings = Converter::Kramdown.convert(root)
  $stderr.puts(warnings)
  File.write(TARGET_DOC_PATH/"Manpage.md", roff)

  roff, warnings = Converter::Roff.convert(root)
  $stderr.puts(warnings)
  File.write(TARGET_MAN_PATH/"brew.1", roff)
end

.sort_key_for_path(path) ⇒ String

This method is part of a private API. This method may only be used in the Homebrew/brew repository. Third parties should avoid using this method if possible, as it may be removed or changed without warning.

Parameters:

Returns:



76
77
78
79
 
# File 'manpages.rb', line 76

def self.sort_key_for_path(path)
  # Options after regular commands (`~` comes after `z` in ASCII table).
  path.basename.to_s.sub(/\.(rb|sh)$/, "").sub(/^--/, "~~")
end