CSV::Writer

Note: Don't use this class directly. This is an internal class.

Attributes

headers[R]

lineno[R]

A CSV::Writer receives an output, prepares the header, format and output. It allows us to write new rows in the object and rewind it.

Public Class Methods

new(output, options) click to toggle source

 
 # File csv/writer.rb, line 18
def initialize(output, options)
 @output = output
 @options = options
 @lineno = 0
 @fields_converter = nil
 prepare
 if @options[:write_headers] and @headers
 self << @headers
 end
 @fields_converter = @options[:fields_converter]
end

Public Instance Methods

<<(row) click to toggle source

Adds a new row

 
 # File csv/writer.rb, line 33
def <<(row)
 case row
 when Row
 row = row.fields
 when Hash
 row = @headers.collect {|header| row[header]}
 end
 @headers ||= row if @use_headers
 @lineno += 1
 row = @fields_converter.convert(row, nil, lineno) if @fields_converter
 i = -1
 converted_row = row.collect do |field|
 i += 1
 quote(field, i)
 end
 line = converted_row.join(@column_separator) + @row_separator
 if @output_encoding
 line = line.encode(@output_encoding)
 end
 @output << line
 self
end

rewind() click to toggle source

Winds back to the beginning

 
 # File csv/writer.rb, line 63
def rewind
 @lineno = 0
 @headers = nil if @options[:headers].nil?
end