Class: CsvRecord::Base

Inherits:
Record::Base
  • Object
show all
Defined in:
lib/csvrecord/base.rb

Overview

Base

Class Method Summary collapse

Instance Method Summary collapse

Class Method Details

.foreach(path, sep: nil, headers: true) ⇒ Object 



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# File 'lib/csvrecord/base.rb', line 11

def self.foreach( path, sep: nil, headers: true )

  ## note: always use reader w/o headers to get row/record values as array of strings
  ##   if headers: true -> skip first row
  names = nil

  CsvReader.foreach( path, sep: sep ) do |row|
    if headers && names.nil?
      names = row   ## store header row / a.k.a. field/column names
    else
      rec = new
      rec.parse( row )

      yield( rec )    ## check: use block.class( rec ) - why? why not?
    end
  end
end

.parse(txt_or_rows, sep: nil, headers: true) ⇒ Object

note: returns an (lazy) enumarator



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# File 'lib/csvrecord/base.rb', line 32

def self.parse( txt_or_rows, sep: nil, headers: true )  ## note: returns an (lazy) enumarator
  if txt_or_rows.is_a? String
    txt = txt_or_rows
    ## note: always use reader w/o headers to get row/record values as array of strings
    ##   if headers: true -> skip first row
    rows = CsvReader.parse( txt, sep: sep )
  else
    ### todo/fix: use only self.create( array-like ) for array-like data  - why? why not?
    rows = txt_or_rows
  end

  ## pp rows


  names = nil

  Enumerator.new do |yielder|
    rows.each do |row|
      if headers && names.nil?
        names = row   ## store header row / a.k.a. field/column names
      else
        rec = new
        rec.parse( row )

        yielder.yield( rec )
      end
    end
  end
end

.read(path, sep: nil, headers: true) ⇒ Object

not returns an enumarator



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# File 'lib/csvrecord/base.rb', line 63

def self.read( path, sep: nil, headers: true )  ## not returns an enumarator
  txt  = File.open( path, 'r:utf-8' ).read
  parse( txt, sep: sep, headers: headers )
end

Instance Method Details

#to_csv ⇒ Object

use/rename/alias to to_row too - why? why not?



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# File 'lib/csvrecord/base.rb', line 70

def to_csv   ## use/rename/alias to to_row too - why? why not?
  ## todo/fix: check for date and use own date to string format!!!!
  @values.map{ |value| value.to_s }
end