Class: StructurePrint

Inherits:
Object
  • Object
show all
Includes:
ConfigReader
Defined in:
lib/print.rb

Instance Method Summary collapse

Methods included from ConfigReader

#config_dir, #config_file, #mkdir, #param, #user_file

Constructor Details

#initialize(sep_char, header = true, format = nil, columns_to_print = nil) ⇒ StructurePrint

Returns a new instance of StructurePrint.



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# File 'lib/print.rb', line 194

def initialize(sep_char, header=true, format=nil, columns_to_print=nil)
  @sep_char = sep_char
  @header = header
  @format = format
  @rownum = 0
  @columns_to_print = columns_to_print
  
end

Instance Method Details

#extract_printed_columns(indexes, values, index_value, add_index = false) ⇒ Object 



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# File 'lib/print.rb', line 237

def extract_printed_columns(indexes, values, index_value, add_index = false)
  print_values = []
  if add_index
    print_values << index_value.to_s
  end
  indexes.each { |index|
    print_values << values[index]
  }
  print_values
end

#get_indexes(level, struct) ⇒ Object 



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# File 'lib/print.rb', line 216

def get_indexes(level, struct)
  result = (0...struct.keys.length).to_a
  if @columns_to_print
    if @columns_to_print == '*'
      return result
    end
    column_names = @columns_to_print.split(',')
    return indexes_from_column_names(column_names, struct)
  end
  print_config_file = config_file("print.cfg")
  if File.exists? print_config_file
    level.gsub!(/\[\d*\]/, '')
    level_map = JSON.parse(File.open(print_config_file).read)
    if level_map.has_key? level
      column_names = level_map[level]
      return indexes_from_column_names(column_names, struct)
    end
  end
  result
end

#hash_element_array(hash) ⇒ Object 



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# File 'lib/print.rb', line 259

def hash_element_array(hash)
    values = []
    hash.keys.each { |key|
      value = hash[key]
      if (value.nil?)
        value = "null"
      elsif (value.class == Array)
        value = "[#{value.length}]"
      elsif (value.class == String)
      elsif (value.class == Fixnum)
        value = value.to_s
      elsif (value.class == Hash)
        value = "..."
      elsif value.class == TrueClass
        value = "true"
      elsif value.class == FalseClass
        value = "false"
      else
        value = "<#{value.class}>"
      end
      values << value
    }
  values
end

#indexes_from_column_names(names, struct) ⇒ Object 



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# File 'lib/print.rb', line 203

def indexes_from_column_names(names, struct)
  result = [ ]
  names.each  { |name|
    index = struct.keys.index name
    if index.is_a? Integer
      result << index
    else
      raise "column (#{name}) not found"
    end
  }
  result
end

#istructure_print(struct, level, add_index = false) ⇒ Object 



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# File 'lib/print.rb', line 288

def istructure_print(struct, level, add_index = false)
  if (struct.class == Array)
    struct.each_with_index { |elt, index|
      istructure_print(elt, level, (struct.length > 1) && @columns_to_print.nil?)
    }
  elsif (struct.class == Hash)
    # print top level elements of hash
    if @titles.nil?
      @titles = true
      @indexes = get_indexes(level, struct)
      titles = extract_printed_columns(@indexes, struct.keys, "item", add_index)
      if @table
        @table.set_titles(@sep_char, titles)
      elsif @format == :csv && @header
        puts titles.to_csv
      end
    end
    values = hash_element_array(struct)
    @rownum += 1
    values_to_print = extract_printed_columns(@indexes, values, @rownum, add_index)
    if @table
      @table.append(values_to_print)
    elsif @format == :csv
      puts values_to_print.to_csv
    else
      puts values_to_print.join("|")
    end
  else
    puts struct.to_s
  end
end

#print_values(values) ⇒ Object 



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# File 'lib/print.rb', line 284

def print_values(values)
  puts values.join("|")
end

#structure_print(struct, level) ⇒ Object 



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# File 'lib/print.rb', line 248

def structure_print(struct, level)
  if @header && @format.nil?
    @table = TablePrint.new
  end
  if $debug > 0
    puts "level = #{level}"
  end
  istructure_print(struct, level)
  @table.print_table if @table
end