This parses CSVs for inserting into raw data blocks on Readme.io. Don't have commas in your values or it will break. Alternatively, change the root separator to something like a semicolon.

csv_to_readmeio.rb

require 'json'

if ARGV[0] == nil
  abort "You moron, you forgot to give us a CSV."
end

data = {}

file = File.new(ARGV[0])

start = true
cols = 0
data_rows = 0
file.each do |line|
  if start
    arr = line.split(",")
    cols = arr.size
    incr = 0
    arr.each do |header|
      data["h-#{incr}"] = header.chomp
      incr += 1
    end
    start = false
    next
  end

  incr = 0
  line.split(",").each do |thingy|
    data["#{data_rows}-#{incr}"] = thingy.chomp
    incr += 1
  end
  data_rows += 1
end

result = {
  data: data,
  cols: cols,
  rows: data_rows
}

puts JSON.pretty_generate(result)