✏️ Editing: AutoGeneratedStruct.h.cxxcodebuilder Read Only

#  Phusion Passenger - https://www.phusionpassenger.com/
#  Copyright (c) 2017-2025 Asynchronous B.V.
#
#  "Passenger", "Phusion Passenger" and "Union Station" are registered
#  trademarks of Asynchronous B.V.
#
#  Permission is hereby granted, free of charge, to any person obtaining a copy
#  of this software and associated documentation files (the "Software"), to deal
#  in the Software without restriction, including without limitation the rights
#  to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
#  copies of the Software, and to permit persons to whom the Software is
#  furnished to do so, subject to the following conditions:
#
#  The above copyright notice and this permission notice shall be included in
#  all copies or substantial portions of the Software.
#
#  THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
#  IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
#  FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
#  AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
#  LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
#  OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
#  THE SOFTWARE.

# This file uses the cxxcodebuilder API. Learn more at:
# https://github.com/phusion/cxxcodebuilder

require 'phusion_passenger/apache2/config_options'

def main
  comment copyright_header_for(__FILE__), 1

add_code %Q{
    #ifndef _PASSENGER_APACHE2_MODULE_SERVER_CONFIG_AUTOGENERATED_STRUCT_H_
    #define _PASSENGER_APACHE2_MODULE_SERVER_CONFIG_AUTOGENERATED_STRUCT_H_

#ifdef INTELLISENSE
      // These includes do nothing, but keep IntelliSense happy.
      #include <set>
      #include <StaticString.h>
      #include <Constants.h>
      #include <ap_config.h>
    #endif
  }

separator

comment %q{
    ServerConfig/AutoGeneratedStruct.h is automatically generated from ServerConfig/AutoGeneratedStruct.h.cxxcodebuilder,
    using definitions from src/ruby_supportlib/phusion_passenger/apache2/config_options.rb.
    Edits to ServerConfig/AutoGeneratedStruct.h will be lost.

To update ServerConfig/AutoGeneratedStruct.h:
      rake apache2

To force regeneration of ServerConfig/AutoGeneratedStruct.h:
      rm -f src/apache2_module/ServerConfig/AutoGeneratedStruct.h
      rake src/apache2_module/ServerConfig/AutoGeneratedStruct.h
  }

separator

add_code %Q[
    namespace Passenger {
    namespace Apache2Module {
  ]

separator

comment %Q{
    Server-wide (global, not per-virtual host) configuration information (autogenerated part).

Use the getter methods to query information, because those will return
    the default value if the value is not specified.
  }

struct 'AutoGeneratedServerConfig' do
    definitions.each do |definition|
      separator
      comment(definition[3][:desc])
      field(definition[0])
    end

separator
    separator

definitions.each do |definition|
      field("StaticString #{definition[2]}SourceFile")
    end

separator

definitions.each do |definition|
      field("unsigned int #{definition[2]}SourceLine")
    end

separator

definitions.each do |definition|
      field("bool #{definition[2]}ExplicitlySet: 1")
    end

separator

function 'AutoGeneratedServerConfig()' do
      definitions.each do |definition|
        add_field_initializer_code(definition)
      end

separator

definitions.each do |definition|
        add_field_source_line_initializer_code(definition)
      end

separator

definitions.each do |definition|
        add_field_explicitly_set_initializer_code(definition)
      end
    end
  end

separator

add_code %Q[
    } // namespace Apache2Module
    } // namespace Passenger

#endif /* _PASSENGER_APACHE2_MODULE_SERVER_CONFIG_AUTOGENERATED_STRUCT_H_ */
  ]
end

def filter_eligible_options(options)
  options.reject do |option|
    option[:alias_for] ||
      option[:obsolete] ||
      option[:context] != :global ||
      option.fetch(:field, true).nil? ||
      option[:field].to_s =~ /\./
  end
end

def struct_field_for(option)
  if option.key?(:field)
    option[:field]
  else
    result = option[:name].sub(/^Passenger/, '')
    result[0] = result[0..0].downcase
    result
  end
end

# Returns [definition_source, estimated_size_on_x86_64, name, option]
def definition_for(option)
  field = struct_field_for(option)
  case option[:type]
  when :string
    result = ["StaticString #{field}", 8 + 4, field]
  when :integer
    result = ["int #{field}", 4, field]
  when :flag
    result = ["bool #{field}", 1, field]
  when :string_set
    result = ["std::set<std::string> #{field}", 24, field]
  else
    raise "Unknown option type #{option[:type].inspect} for option #{option[:name]}"
  end
  result + [option]
end

def definitions
  @definitions ||= begin
    eligible_options = filter_eligible_options(APACHE2_CONFIGURATION_OPTIONS)
    definitions = eligible_options.map { |o| definition_for(o) }
    # Sort the definitions by size in order to make the struct smaller.
    # It's possible to make it even smaller with a smarter algorithm but for now
    # I don't bother.
    definitions.sort! do |d1, d2|
      if d1[1] == d2[1]
        # After sorting on size, sort alphabetically.
        d1[2] <=> d2[2]
      else
        d1[1] <=> d2[1]
      end
    end
  end
end

def add_field_initializer_code(definition)
  field_name = definition[2]
  option = definition[3]

if option[:default_expr]
    add_code %Q{
      #{field_name} = #{option[:default_expr]};
    }
    return
  elsif option[:default]
    add_code %Q{
      #{field_name} = #{option[:default].inspect};
    }
    return
  end

case option[:type]
  when :integer
    add_code %Q{
      #{field_name} = 0;
    }
  when :flag
    add_code %Q{
      #{field_name} = false;
    }
  when :string, :string_keyval, :string_array, :string_set
    comment "#{field_name}: default initialized"
  else
    raise "Unknown type #{option[:type].inspect}"
  end
end

def add_field_source_line_initializer_code(definition)
  field_name = definition[2]
  add_code %Q{
    #{field_name}SourceLine = 0;
  }
end

def add_field_explicitly_set_initializer_code(definition)
  field_name = definition[2]
  add_code %Q{
    #{field_name}ExplicitlySet = false;
  }
end

main

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