DSL to write .htaccess files.

README

.htaccess ファイルを DSL で記述するってどうでしょう ?

使い方:
$ ruby build_htaccess.rb example.rb

出力:

<IfModule mod_rewrite.c>
  RewriteEngine on
  <Limit GET>
    RewriteRule ^/user/(.*)$ /user.cgi?id=$1 [L,R]
  </Limit>
</IfModule>
Order Deny,Allow
Deny from All
Allow from 192.168.0.11
Allow from 192.168.0.12
Allow from 192.168.0.13
Allow from 192.168.0.14
Allow from 192.168.0.15

build_htaccess.rb

require './htaccess_dsl'
include HtaccessDsl
load ARGV[0]

example.rb

dsl {
  IfModule("mod_rewrite.c") {
    RewriteEngine :on
    Limit("GET") {
      RewriteRule "^/user/(.*)$ /user.cgi?id=$1 [L,R]"
    }
  }

  Order "Deny,Allow"
  Deny  "from All"
  (11..15).each do |n|
    Allow "from 192.168.0.#{n.to_s}"
  end
}

htaccess_dsl.rb

module HtaccessDsl
  class Htaccess
    def initialize
      @lines = []
      @depth = 0
    end

    def method_missing(method, *args, &block)
      if block_given?
        _put_block(method, *args, &block)
      else
        _puts(method.to_s + " " + args[0].to_s)
      end
    end

    # ディレクティブの指定
    def _puts(line)
      @lines << _indent + line 
    end

    # ブロック形式の記述
    def _put_block(directive, cond = nil, &block)
      if cond.nil?
        @lines << _indent + "<#{directive.to_s}>"
      else
        @lines << _indent + "<#{directive.to_s} #{cond}>"
      end
      @depth += 1
      instance_eval(&block)
      @depth -= 1
      @lines << _indent + "</#{directive.to_s}>"
    end

    # インデント
    def _indent
      "  " * @depth
    end

    # 出力
    def _output
      @lines.each do |line|
        puts line
      end
    end
  end

  # 渡されたブロックを DSL として解釈し, .htaccess 形式に出力
  def dsl(&block)
    htaccess = Htaccess.new
    htaccess.instance_eval(&block)
    htaccess._output
  end
end