Question

为什么下面的类输出目录和文件名在线“打印”\ n“+ f”？我只想输出文件，但目录也在输出。

class Sort



  require 'find'

  directoryToSort = "c:\\test"

   total_size = 0

   Find.find(directoryToSort) do |path|
     if FileTest.directory?(path)
       if File.basename(path)[0] == ?.
         Find.prune       # Don't look any further into this directory.
       else
       Dir.foreach(path) do
       |f|
       # do whatever you want with f, which is a filename within the
       # given directory (not fully-qualified)
         if !FileTest.directory? f
         print "\n"+f
         end
       end
         next
       end
     else
     end
   end

end

Answer 1

它在评论中说：

# do whatever you want with f, which is a filename within the
# given directory (not fully-qualified)

关键是“不完全合格”的部分。你需要做类似的事情：

if !FileTest.directory? (path + File::SEPARATOR + f)

Answer 2

请考虑使用Ruby标准File.directory?方法。

Answer 3

您需要File.directory?( filename )来检查它是否是文件名

你可能想要沿着这些方向做点什么......

这是一个辅助方法，用于执行递归目录下降和执行块依赖如果文件名与某些正则表达式匹配..对你来说有点矫枉过正，但也许这会有所帮助。

# recursiveDirectoryDescend                                                                                                                                                                                                                                                     
#      do action for files matching regexp
#
# (not very elegant solution, but just for illustration purposes. Pulled from some very old code.)


def recursive_dir_descend(dir,regexp,action)
  olddir = Dir.pwd
  dirp = Dir.open(dir)
  Dir.chdir(dir)
  pwd = Dir.pwd

  for file in dirp
    file.chomp
    next if file =~ /^\.\.?$/  # ON UNIX, ignore '.' and '..' directories

    filename = "#{pwd}/#{file}"
    if File.directory?(filename)                  # CHECK IF DIRECTORY
      recursive_dir_descend(filename,regexp,action)
    else
      if file =~ regexp
        eval action   # execute action on filename                                                                                                                                                                                                                              
      end
    end
  end
  Dir.chdir(olddir)
end

Ruby类正在输出文件和目录

3 个答案: