Class: FileSplit::FileSplitter

Inherits:
Object
  • Object
show all
Defined in:
lib/file_split/file_splitter.rb

Overview

The Main File Splitter Class

Instance Method Summary collapse

Instance Method Details

#start ⇒ Object

Process File Splitting

Example

>> FileSplitter.start
=> void



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# File 'lib/file_split/file_splitter.rb', line 13

def start
  row_count = 0
  file_count = 1
  headers = []
  footers = []
  out = false
  reader = File.open config[:source], "r"
  reader.each_line { |line|

    break if config[:maxlines] > 0 && reader.lineno == config[:maxlines]

    if row_count == 0
      out = File.new(target_name(file_count), "w+")
      headers.each { |header| out.puts header }
    end

    if config[:header] > 0 && reader.lineno <= config[:header]
      headers.push line
    end

    out.puts line

    row_count += 1

    if config[:footer] > 0
      footers.unshift line
      footers.delete_at config[:footer] if footers.length == config[:footer]
    end

    if row_count == config[:lines]
      row_count = 0
      file_count += 1
      out.close
    end

  }
  reader.close

  if row_count <= footers.length
    File.delete target_name(file_count)
    file_count -= 1
    File.open(target_name(file_count), "a+") do |last_file|
      [row_count..footers.length].each do |i|
        last_file.puts footers[i]
      end
    end
  end

  if footers.length > 0
    (file_count-1).times do |file_no|
      out = File.open(target_name(file_no), "a+")
      footers.each { |footer| out.puts footer }
      out.close
    end
  end

end