coffee yahoo.coffee tsla 08-27-2013 08-29-2013

yahoo.coffee

http = require 'http'
csv = require 'csv'

if process.argv.length is 2
  url = 'http://ichart.finance.yahoo.com/table.csv?s=TSLA&a=07&b=28&c=2013&d=07&e=29&f=2013&g=d'
else if process.argv.length is 5
  [_, _, symbol, start, end] = process.argv
  [[a, b, c], [d, e, f]] = [start.split('-'), end.split('-')]
  console.log a, b, c, d, e, f
  url = "http://ichart.finance.yahoo.com/table.csv?s=#{symbol}&a=#{--a}&b=#{b}&c=#{c}&d=#{--d}&e=#{e}&f=#{f}&g=d"
else
  console.log 'usage: coffee yahoo.coffee [symbol] [start date] [end date]'
  process.exit 1

console.log "hitting #{url}\n"
http.get url, (res) ->
  if res.statusCode is 200
    console.log "#{symbol.toUpperCase()} : #{new Date()}"
    csv().from(res).transform (row, rowNum) ->
      console.log row