Module: FortIO::Namelist

Defined in:
lib/fortio-namelist/fortran_namelist.rb,
lib/fortio-namelist/fortran_namelist.tab.rb,
lib/fortio-namelist/fortran_namelist.tab.rb

Defined Under Namespace

Classes: Parser, Reader, Scanner

Class Method Summary collapse

Class Method Details

.dump(root, **format_options) ⇒ Object 



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# File 'lib/fortio-namelist/fortran_namelist.rb', line 261

def self.dump (root, **format_options)
  return root.map { |group, hash| generate(hash, group: group, **format_options) }.join
end

.filter(input, **format_options) {|config| ... } ⇒ Object

FortIO::Namelist.filter(input) { |hash| MODIFYING HASH }

input : namelist string
return value : namelist string

Yields:

  • (config) 


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# File 'lib/fortio-namelist/fortran_namelist.rb', line 302

def self.filter (input, **format_options)
  config = parse(input)
  yield config
  return dump(config, **format_options)
end

.float_to_string(value, d:) ⇒ Object

FortIO::Namelist.dump(hash, group: “namelist”)

hash -> namelist converter



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# File 'lib/fortio-namelist/fortran_namelist.rb', line 100

def self.float_to_string (value, d:)
  if value == 0
    return "0.0"
  elsif Math.log10(value).between?(-4,4)
    return "%.16g" % value
  else
    num,exp = ("%.16e" % value).split(/e/)
    return ("%.16g" % num) + d + exp
  end
end

.format_element(value, logical_format: 'normal', float_format: 'normal', uppercase: false) ⇒ Object 



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# File 'lib/fortio-namelist/fortran_namelist.rb', line 111

def self.format_element (value, 
                         logical_format: 'normal', 
                         float_format: 'normal', 
                         uppercase: false)
  case value
  when String
    if value !~ /'/
      return "'" + value + "'"
    else 
      return '"' + value.gsub(/"/, '""') + '"'
    end
  when Float
    d = uppercase ? "D" : "d"
    case float_format
    when 'normal'
      float_to_string(value, d: d)
    when 'd0'
      value = float_to_string(value, d: d)
      return ( value =~ /#{d}/ ) ? value : value + d + "0"
    when 'exp'
      num,exp = ("%.16e" % value).split(/e/)
      return ("%.16g" % num) + d + exp
    else        
      raise "invalid float_format"
    end
  when Complex
    format("(%s,%s)",
           format_element(value.real, float_format: float_format),
           format_element(value.imag, float_format: float_format))
  when TrueClass
    case logical_format
    when 'normal'
      return uppercase ? ".TRUE." : ".true."
    when 'short'
      return uppercase ? "T" : "t"
    else
      raise "invalid logical_format"
    end
  when FalseClass
    case logical_format
    when 'normal'
      return uppercase ? ".FALSE." : ".false."
    when 'short'
      return uppercase ? "F" : "f"
    else
      raise "invalid logical_format"
    end
  else
    return value.to_s
  end      
end

.generate(hash, group: "group", array_style: "stream", alignment: "left", uppercase: false, separator: "comma", group_end: "/", indent: ' ', **format_options) ⇒ Object 



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# File 'lib/fortio-namelist/fortran_namelist.rb', line 163

def self.generate (hash, 
                   group: "group", 
                   array_style: "stream",
                   alignment: "left",
                   uppercase: false,
                   separator: "comma",
                   group_end: "/",
                   indent: '  ',
                   **format_options)
  format_options[:uppercase] = uppercase
  list = []
  hash.each do |ident, value|
    case value
    when Array
      case array_style
      when "index"
        value.each_with_index do |e, i|
          if e
            list << ["#{ident}(#{i+1})", format_element(e, **format_options)]
          end
        end
      when "stream"
        list << [ident, value.map{ |e| format_element(e, **format_options) }.join(", ")]
      else
        raise "invalid keyword argument `array_style` (should be 'index', 'stream')"  
      end
    else
      list << [ident, format_element(value, **format_options)]
    end
  end
  if uppercase 
    list = list.map{|ident,value| [ident.upcase, value]}
    group = group.upcase
  end
  case separator
  when "comma", ","
    nl = ",\n"
  when "nl", "\n"
    nl = "\n"
  else
    raise "invalid keyword argument `separator` (should be 'comma', ',', 'nl', '\n')"
  end
  case alignment
  when /\Astream(:(\d+))?/
    maxlen = $2 ? $2.to_i : 79 - indent.size
    elements = list.map { |ident, value|
      format("%s = %s", ident, value)
    }
    body = ""
    line = []
    len  = indent.size
    elements.each do |e|
      if len + e.length >= maxlen
        body += indent + line.join(", ") + nl
        line = []
        len  = indent.size
      end
      line << e
      len += e.length + 2
    end
    body += indent + line.join(", ") + nl unless line.empty?
    body = body.chomp
  when "none"
    body = list.map { |ident, value|
      format("%s%s = %s", indent, ident, value)
    }.join(nl)      
  when /\Aleft(:(\d+))?/
    if $2
      ident_maxlen = $2.to_i - indent.size
    else
      ident_maxlen = list.map{|ident,value| ident.length}.max
    end
    body = list.map { |ident, value|
      format("%s%-#{ident_maxlen}s = %s", indent, ident, value)
    }.join(nl)
  when /\Aright(:(\d+))?/
    if $2
      ident_maxlen = $2.to_i - indent.size
    else
      ident_maxlen = list.map{|ident,value| ident.length}.max
    end
    body = list.map { |ident, value|
      format("%s%#{ident_maxlen}s = %s", indent, ident, value)
    }.join(nl)
  else
    raise "invalid keyword argument `alignment` (should be 'normal' 'left' 'right' 'stream')"  
  end
  case group_end
  when "slash", "/"
    tail = "/"
  when "end"
    tail = "&end"
  else
    raise "invalid keyword argument `group_end` (should be 'slash', '/', 'end')"
  end
  return ["&#{group}", body, tail, ""].join("\n")
end

.parse(input, group: nil) ⇒ Object

FortIO::Namelist.read(input, name: nil)



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# File 'lib/fortio-namelist/fortran_namelist.rb', line 268

def self.parse (input, group: nil)
  case input
  when String
    text = input
  else
    text = input.read
  end
  reader = FortIO::Namelist::Reader.new(text)
  case group
  when Array
    groups = group.map{|s| s.intern }
  when String, Symbol
    groups = [group].map{|s| s.intern }
  when nil
    groups = reader.namelist.keys
  else
    raise "invalid keyword arugment `group` '#{group.inspect}'"
  end
  return groups.each_with_object({}) { |group, root|
    root[group] = {}
    reader.parse(group, root[group])
  }    
end

.read(input, group: nil) ⇒ Object 



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# File 'lib/fortio-namelist/fortran_namelist.rb', line 292

def self.read (input, group: nil)
  parse(input, group: group)
end