ruby-on-rails - 在 ruby​​ 中遍历 CSV

Question

我想用 ruby​​ 打印一个 CSV 文件，但我想对其进行格式化。有没有办法在层次结构意义上格式化数据？这是我需要检查的列表的一小部分:

,"11: Agriculture, Forestry, Fishing and Hunting",,
,,"111: Crop Production",
,,,"111110: Soybean Farming"
,,,"111120: Oilseed (except Soybean) Farming"
,,,"111130: Dry Pea and Bean Farming"
,,,"111140: Wheat Farming"
,,"112: Animal Production",
,,,"112111: Beef Cattle Ranching and Farming"
,,,"112112: Cattle Feedlots"
,,,"112120: Dairy Cattle and Milk Production"
,,,"112130: Dual-Purpose Cattle Ranching and Farming"

我的代码是:

require 'csv'

col_data = [] 
CSV.foreach("primary_NAICS_code.txt") {|row| col_data << row} 
puts col_data

这只会打印出所有内容。它是数组中的数组吗？像这样的东西:

CSV.foreach do |row|
  row.each do |line|
    puts line
  end
end

任何帮助都会为我指明正确的方向。

我想把信息格式化成这样:

|_ <~~ row 1 column 1
| |__<~ row 1 column 2
| |  |__<~row 2 column 2 
| |  |  |__  
| |  |  |  |__  etc... 
| |  |  |  |  |__

Answer 1

由于您的数据已经缩进，您只需对其进行转换/格式化。这样的事情应该有效:

col_data.each do |row|
  indentation, (text,*) = row.slice_before(String).to_a
  puts indentation.fill("|").join(" ") + "_ " + text
end

输出:

|_ 11: Agriculture, Forestry, Fishing and Hunting
| |_ 111: Crop Production
| | |_ 111110: Soybean Farming
| | |_ 111120: Oilseed (except Soybean) Farming
| | |_ 111130: Dry Pea and Bean Farming
| | |_ 111140: Wheat Farming
| |_ 112: Animal Production
| | |_ 112111: Beef Cattle Ranching and Farming
| | |_ 112112: Cattle Feedlots
| | |_ 112120: Dairy Cattle and Milk Production
| | |_ 112130: Dual-Purpose Cattle Ranching and Farming