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Code to convert json to csv, with correct headings
Usage: ruby convertjsoncsv.rb <input file> <output file>
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require 'csv' | |
require 'json' | |
require "set" | |
json = JSON.parse(File.open(ARGV[0]).read)["results"] | |
# Pass 1: Collect headings | |
headings = SortedSet.new | |
json.each do |hash| | |
headings.merge(hash.keys) | |
end | |
# Pass 2: Fill data into the headings | |
csv_string = CSV.open(ARGV[1], "wb") do |csv| | |
csv << headings | |
json.each do |hash| | |
row = {} | |
headings.each do |heading| | |
row[heading] = nil | |
end | |
hash.each do |k,v| | |
row[k] = v.to_s.gsub(/\r\n?/, "").delete("\n").delete("\r") | |
end | |
csv << row.values | |
end | |
end |
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