Class: LX::File::Class

Inherits:
Object
  • Object
show all
Defined in:
lib/lx.rb

Instance Method Summary collapse

Constructor Details

#initialize(clss) ⇒ Class

Returns a new instance of Class.



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# File 'lib/lx.rb', line 455

def initialize(clss)
end

Instance Method Details

#atomic_write(path_final, content) ⇒ Object

Atomically writes content to the given path. Does so by creating a temp file, writing to it, then renaming the temp file to the final destination.



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# File 'lib/lx.rb', line 460

def atomic_write(path_final, content)
  begin
    path_tmp = path_final + '.' + rand.to_s.sub(/\A.*\./mu, '')
    File.write path_tmp, content
    File.rename path_tmp, path_final
  ensure
    if File.exist?(path_tmp)
      File.delete path_tmp
    end
  end
end

#temp_path(opts = {}) ⇒ Object

Creates a temporary path. Does not create a file. If, after the ‘do` block, a file exists at that path, that file is deleted.



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# File 'lib/lx.rb', line 474

def temp_path(opts = {})
  opts = {'delete'=>true}.merge(opts)
  
  # root
  if opts['root']
    root = opts['root'].sub(/\/*\z/mu, '/')
  else
    root = './'
  end
  
  # full path
  path = root + LX.randstr
  
  # add extension
  if opts['ext']
    ext = opts['ext']
    ext = ext.sub(/\A\.*/mu, '.')
    path += ext
  end
  
  if block_given?
    begin
      yield path
    ensure
      if opts['delete'] and File.exist?(path)
        File.delete path
      end
    end
  else
    return path
  end
end