ruby - 有没有更简单的方法使用 Ruby 将时间戳插入文件名？

Question

有没有更简单的方法在文件名中插入时间戳？

def time_stamped_file(file)
  file.gsub(/\./,"_" + Time.now.strftime("%m-%d_%H-%M-%S") + '.') 
end

f = "test.txt"
puts time_stamped_file(f) 


=> test_01-24_12-56-33.txt

Answer 1

不一定“更简单”，但这里有一种更规范、更可靠的方法:

def timestamp_filename(file)
  dir  = File.dirname(file)
  base = File.basename(file, ".*")
  time = Time.now.to_i  # or format however you like
  ext  = File.extname(file)
  File.join(dir, "#{base}_#{time}#{ext}")
end

timestamp_filename("test.txt")     # => "./test_1359052544.txt"
timestamp_filename("test")         # => "./test_1359052544"
timestamp_filename("dir/test.csv") # => "dir/test_1359052544.csv"