Class: Ld::File

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

Constant Summary collapse

@@current_path = 
Dir.pwd
@@exclude = 
['.', '..']

Instance Attribute Summary collapse

Class Method Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(path) ⇒ File

Returns a new instance of File.



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# File 'lib/ld/file/file.rb', line 7

def initialize path
  @path = path[0] == '/' ? path : "#{Dir.pwd}/#{path}"
  @name = File.basename @path
  read_attrs
end

Instance Attribute Details

#exist ⇒ Object

Returns the value of attribute exist.



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# File 'lib/ld/file/file.rb', line 3

def exist
  @exist
end

#mode ⇒ Object

Returns the value of attribute mode.



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# File 'lib/ld/file/file.rb', line 3

def mode
  @mode
end

#name ⇒ Object

Returns the value of attribute name.



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# File 'lib/ld/file/file.rb', line 3

def name
  @name
end

#path ⇒ Object

Returns the value of attribute path.



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# File 'lib/ld/file/file.rb', line 3

def path
  @path
end

#size ⇒ Object

Returns the value of attribute size.



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# File 'lib/ld/file/file.rb', line 3

def size
  @size
end

#stat ⇒ Object

Returns the value of attribute stat.



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# File 'lib/ld/file/file.rb', line 3

def stat
  @stat
end

#suffix ⇒ Object

Returns the value of attribute suffix.



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# File 'lib/ld/file/file.rb', line 3

def suffix
  @suffix
end

#type ⇒ Object

Returns the value of attribute type.



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# File 'lib/ld/file/file.rb', line 3

def type
  @type
end

Class Method Details

.base64(path) ⇒ Object

编码base64



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# File 'lib/ld/file/file.rb', line 21

def self.base64 path
  Base64.encode64(File.open(path, 'rb').read)
end

.current ⇒ Object

作用 返回当前所在目录(Dir.pwd)



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# File 'lib/ld/file/file.rb', line 60

def self.current
  Ld::File.new @@current_path
end

.open(path) ⇒ Object

作用 打开一个文件



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# File 'lib/ld/file/file.rb', line 14

def self.open path
  f = self.new path
  f.read_attrs
  f
end

.test ⇒ Object

test:



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# File 'lib/ld/file/file.rb', line 206

def self.test
  sdf{100.times{Ld::File.new('app').search_regexp //}}
end

.write(path, arr) ⇒ Object 



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# File 'lib/ld/file/file.rb', line 201

def self.write path, arr
  File.open(path)
end

.write_image_by_base64_and_path(base64, path) ⇒ Object

解码base64,并写入图片



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# File 'lib/ld/file/file.rb', line 26

def self.write_image_by_base64_and_path base64, path
  File.open(path,'wb').write(Base64.decode64 base64)
end

Instance Method Details

#children ⇒ Object

作用 返回这个目录下的所有一级目录与一级文件,如果不是目录,会报错



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# File 'lib/ld/file/file.rb', line 50

def children
  dir!
  Dir.foreach(@path).map{|n| Ld::File.new("#{@path}/#{n}") if !is_exclude? n}.compact.sort{|a,b| a.type <=> b.type}
end

#delete ⇒ Object

作用 删除当前文件(有gets确认)



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# File 'lib/ld/file/file.rb', line 162

def delete
  puts "删除!:#{path}\n,确认请输入 delete_file,"
  if gets.chomp == 'delete_file'
    if File.delete path == 1
      @exist = false
      puts "删除成功 #{path}"
    end
  end
end

#details ⇒ Object 



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# File 'lib/ld/file/file.rb', line 217

def details
  Ld::Dir.new(@path).details
end

#dir! ⇒ Object 



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# File 'lib/ld/file/file.rb', line 78

def dir!
  raise "这不是一个目录,而是一个#{type}:#{path}" if type != 'directory'
end

#dir? ⇒ Boolean

作用 判断这是目录吗

Returns:

  • (Boolean) 


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# File 'lib/ld/file/file.rb', line 69

def dir?
  type == 'directory'
end

#dirs ⇒ Object

作用 返回所有目录



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# File 'lib/ld/file/file.rb', line 188

def dirs
  children.select{|f| f.type == 'directory'}
end

#exist! ⇒ Object 



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# File 'lib/ld/file/file.rb', line 64

def exist!
  raise "不存在的 #{path}" if !@exist
end

#file! ⇒ Object 



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# File 'lib/ld/file/file.rb', line 82

def file!
  raise "这不是一个文件,而是一个#{type}:#{path}" if type != 'file'
end

#file? ⇒ Boolean

作用 判断这是文件吗

Returns:

  • (Boolean) 


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# File 'lib/ld/file/file.rb', line 74

def file?
  type == 'file'
end

#files ⇒ Object

作用 返回所有文件



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# File 'lib/ld/file/file.rb', line 173

def files
  children.select{|f| f.type == 'file'}
end

#find(name) ⇒ Object

作用 查找文件或目录,返回一个一级目录或文件,如果不存在则返回nil



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# File 'lib/ld/file/file.rb', line 87

def find name
  dir!
  Ld::File.new "#{path}/#{name.to_s}" if File.exist? "#{path}/#{name.to_s}"
end

#is_exclude?(name) ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/ld/file/file.rb', line 55

def is_exclude? name
  @@exclude.include? name
end

#iter_search(name, results) ⇒ Object 



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# File 'lib/ld/file/file.rb', line 122

def iter_search name, results
  children.each do |file|
    if file.name == name
      results << file
    end
    if file.dir?
      file.iter_search name, results
    end
  end
end

#iter_search_regexp(regexp, results) ⇒ Object 



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# File 'lib/ld/file/file.rb', line 133

def iter_search_regexp regexp, results
  children.each do |file|
    if file.name.match(regexp)
      results << file
    end
    if file.dir?
      file.iter_search_regexp regexp, results
    end
  end
end

#lines ⇒ Object

作用 如果是一个文本文件,返回所有行



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# File 'lib/ld/file/file.rb', line 145

def lines
  File.open(@path).readlines
end

#look ⇒ Object 



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# File 'lib/ld/file/file.rb', line 45

def look
  puts lines
end

#ls ⇒ Object

作用 输出目录中所有条目



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# File 'lib/ld/file/file.rb', line 193

def ls
  if type == 'directory'
    Ld::Print.ls self
  elsif type == 'file'
    Ld::Print.ls self.parent
  end
end

#parent ⇒ Object

作用 返回父目录



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# File 'lib/ld/file/file.rb', line 178

def parent
  Ld::File.new(File.dirname @path)
end

#read_attrs ⇒ Object 



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# File 'lib/ld/file/file.rb', line 30

def read_attrs
  @suffix = @name.split('.').last
  @suffix = @suffix == @name ? nil : @suffix
  if File.exist? @path
    @exist = true
    @type = File.ftype path
    @stat = File.stat path
    @size = @stat.size
    @mode = @stat.mode
  else
    @exist = false
    @type = 'not found'
  end
end

#rename(new_name) ⇒ Object

作用 修改名称(目录或文件均可)



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# File 'lib/ld/file/file.rb', line 154

def rename new_name
  new_path = "#{dir.path}/#{new_name}"
  if File.rename @path, new_path
    @path = new_path
  end
end

#sdf(&block) ⇒ Object 



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# File 'lib/ld/file/file.rb', line 210

def sdf &block
  t1 = Time.new
  block.call
  t2 = Time.new
  puts t2 - t1
end

#search(name, type = :all) ⇒ Object

作用 精确查找,返回所有匹配的目录和文件



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# File 'lib/ld/file/file.rb', line 93

def search name, type = :all
  dir!
  results = []
  iter_search name, results
  case type.to_s
    when 'all'
      results
    when 'file'
      results.map{|f| f.type == 'file'}
    when 'dir'
      results.map{|f| f.type == 'directory'}
  end
end

#search_regexp(regexp, type = :all) ⇒ Object

作用 模糊查找,返回所有匹配的目录和文件



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# File 'lib/ld/file/file.rb', line 108

def search_regexp regexp, type = :all
  dir!
  results = []
  iter_search_regexp regexp, results
  case type.to_s
    when 'all'
      results
    when 'file'
      results.map{|f| f.type == 'file'}
    when 'dir'
      results.map{|f| f.type == 'directory'}
  end
end

#siblings ⇒ Object

作用 返回所有兄弟



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# File 'lib/ld/file/file.rb', line 183

def siblings
  parent.children
end