Ruby - 解析文本文件

Question

我是 Ruby 的新手，一直在嘗試一些非常基本的文本解析。 然而，我現在正在嘗試解析更多的復雜文件，然后將其推送到 csv 文件（我之前沒有做過）並且我陷入了困境。

該文件如下所示，

Title
some text
some different text
Publisher: name
Published Date: date
Number1: number
Number2: number
Number3: number
Category: category
----------------------
Title
some text
some different text
Publisher: name
Published Date: date
Number1: number
Number2: number
Number3: number
Category: category
----------------------

等等

每行代表 csv 中的一個新“列”。

有人可以伸出援手嗎？

太感謝了！

Answer 1

以下是您的一般想法

File.open( thefile ).each do |line|
    print line without the new line if line does not contain  /--+/
    if line contains /--+/
        print line with a new line
    end
end

Answer 2

這是一個完整的解決方案。 請注意，它對文件結構非常敏感！

out_file = File.open('your_csv_file.csv', 'w')
out_file.puts "Title,Publisher,Publishedate,Number1,Number2,Number3,Category"
the_line = []
in_title = false
IO.foreach('your_file_name') do |line|
  if line =~ /^-+$/
    out_file.puts the_line.join(',')
    the_line = []
  elsif line =~ /^Title$/
    in_title = true
  elsif line =~ /^(?:Publishe(?:r|d Date)|Number\d|Category):\s+(.*?)$/
    the_line += [$1]
    in_title = false
  elsif in_title
    the_line[0] = (the_line.empty? ?  line.chomp : "\"#{the_line[0]} #{line.chomp}\"")
  else
    puts "Error: don't know what to do with line #{line}"
  end
end
out_file.close

Answer 3

Ruby 2.6.5

some_file = "/path/to/file.extension"

if File.exist?(some_file)
    File.open(some_file).each do |line|
        if line.include?('some_string')
            puts "line: #{line}"
        end
    end
end