Ruby如何计算文件夹大小

Python010

Ruby如何计算文件夹大小,第1张

计算文件大小的不会，给你看看行数计算吧

Ruby文件行数计算代码示例：

module Enumerable

# function to get total lines for file

def total_lines

lines = 0

each_with_index {|content,lines|}

return lines+1

end

end

class CheckLines

require 'find'

@check_type = %w{txt rb erb yml html css xml}

def initialize(directory)

@total_lines = 0

if File.directory?(directory)

@directorydirectory = directory

@contents = {}

self.go

else puts "#{directory} is not a directory! check it out!" and return

end

end

def go

if @directory

Find.find @directory do |path|

pathpathlite = path.gsub(@directory,'')

if File.file? path

File.open path do |f|

tmp_line = f.total_lines

@contents.store(pathlite,tmp_line)

@total_lines += tmp_line

end

end

end

puts @total_lines

end

end

def details

@contents.each do |key,value|

puts "#{key} file has lines of #{value}"

end

end

end

str = "Ruby"

str.split(//).each {|e|print (e.unpack('H*').to_s + "\n")}

#irb

# 52

# 75

# 62

# 79

# =>["R", "u", "b", "y"]

直接写入数据库就好了，写一个读写mysql的类文件接口，然后调用操作。具体如下，我调试过的。

++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++

require 'mysql'

class MysqlDb

# attr_accessor :host, :user, :pass, :database

def open(host=nil, user=nil, pass=nil, database=nil,port=3306)

@host =host

@user = user

@pass = pass

@database = database

@port = port

begin

@connection = Mysql.new(@host, @user, @pass, @database, @port)

rescue

puts "connect faild! an error has occurred: #{$!}" # 错误信息保存在特殊变量$!中。

try_again

end

end

def try_again

puts '------------------try again, if not modify, leave a blank---------------'

print "host: "

host=STDIN.gets.strip

@host = check_value(host,@host)

puts "---------------current host: #{@host}"

print "user: "

user =STDIN.gets.strip

@user = check_value(user,@user)

puts "---------------current user: #{@user}"

print "password: "

pass =STDIN.gets.strip

@pass = check_value(pass,@pass)

puts "---------------current password: #{@pass}"

print "database: "

database =STDIN.gets.strip

@database = check_value(database,@database)

puts "---------------current database: #{@database}"

print "port: "

port =STDIN.gets.strip

@port = check_value(port,@port)

open(@host, @user, @pass, @database, @port)

puts "---------------current port: #{@port}"

end

def check_value(value,returnvalue)

if value == ""

nil

else

returnvalue = value

end

return returnvalue

end

def iquery(sql)

field = []

@connection.query(sql).each do |data|

field <<data

end

field.to_a

end

def iexecute(sql)

@connection.query(sql)

end

def close

@connection.close

end

end

# useages

adb = MysqlDb.new

adb.open('127.0.0.1','root','zyq001122','hello_z','3307')

# result = db.query "insert into user value(7,\"lilY\",\"256y42\",\"#{Time.now.strftime("%Y-%m-%d %H:%M:%S")}\" )" # 插入记录

# result.each {|row| puts row}

num_of_records = adb.iquery ('select count(*) from user') #查询

puts num_of_records

#sql = "insert into user value(10,\"Hello-Kitty\",\"256y42\",\"#{Time.now.strftime("%Y-%m-%d %H:%M:%S")}\" )"# 数据操作

# sql = 'update user set name=\'jackjhons\' where uid=5 ' # 更新一条记录

#adb.iexecute(sql)

# adb.close