Top Level Namespace

Defined Under Namespace

Modules: FBayesDir Classes: Categories, Food, InternalTurnk, USDA

Constant Summary collapse

FILES_ENUM =

file enum

{
   "Food Description" => "FOOD_DES",
   "Nutrient Data" => "NUT_DATA",
   "Weight" => "WEIGHT",
   "Footnote" => "FOOTNOTE",
   "Food Group Description" => "FD_GROUP",
   "LanguaL Factor" => "LANGUAL",
   "LanguaL Factors Description" => "LANGDESC",
   "Nutrient Definition" => "NUTR_DEF",
   "Source Code" => "SRC_CD",
   "Data Derivation Description" => "DERIV_CD",
   "Sources of Data" => "DATA_SRC",
   "Sources of Data Link" => "DATSRCLN"
}
FIELD_SEP = 
','
FIELD_ENC = 
'~'
NULL_FIELDS = 
['^^','~~',"\r\n",'']
DATA_PATH = 
'lib/data/sr24/'

Instance Method Summary collapse

Instance Method Details

#parse ⇒ Object 



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# File 'lib/data/sr24/convert_to_csv.rb', line 86

def parse
  paths = {}
  FILES_ENUM.each do |n,f|
    f_path = DATA_PATH + f + ".txt"
    paths[f] = parse_to_csv(f_path)
  end
  paths
end

#parse_line(line) ⇒ Object 



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# File 'lib/data/sr24/convert_to_csv.rb', line 26

def parse_line(line)
  # line.force_encoding("US-ASCII")
  # line.byte_size = 8
  line.chomp!("\r\n")
  fields = line.split('^')
  p_fields = []
  fields.each do |field|
    # strip the '~' if present
    if field.index('"')
      field.gsub!(/[\"]/,"'")
    end
    if field.index(',')
      field.gsub!(/[\,]/,"\,")
    end
    if field.index(FIELD_ENC) and field.size > 2
      p_fields.push field.chop!.reverse!.chop!.reverse!
    else
      # else if the field matches a null field
      if NULL_FIELDS.index(field)
        p_fields.push ''
      elsif field.index('.')
        # else the field must be a number
        p_fields.push field.to_f
      elsif field.index('/')
        # check to see if its a date, add as a string for now
        p_fields.push field
      else
        p_fields.push field.to_i  
      end
    end
  end
  p_fields
end

#parse_to_csv(file_path) ⇒ Object 



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# File 'lib/data/sr24/convert_to_csv.rb', line 60

def parse_to_csv(file_path) 
  # Deliminators
  file = open(file_path, 'r:windows-1251')
  puts file_path
  rows = []
  # parse all lines
  file.each do |line|
    rows.push parse_line(line)
  end

  # formate csv data by joining each field with a comma and each row with a line break
  csv_data = rows.collect { |row| row.join('^') }.join("\n")

  # save file to a new csv file
  txt_ext_pop= /^(.+)\.txt/
  csv_file_path = txt_ext_pop.match(file_path)[1] + '.csv' #file_path[file_path.length-4..file_path.length-1] + 'csv'
  puts csv_file_path
  csv_file = File.new(csv_file_path, 'w')
  csv_file.write(csv_data)
  csv_file.close

  #return path
  csv_file_path
end