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This article will include many usefull examples. Let's enjoy Ruby!

HTTP Client
Here is am example shows how to write HTTP client with Ruby.

require 'net/http'

def fetch(loc, port, url)

z=nil

h=Net::HTTP.new(loc,port)

begin

resp, data = h.get(url,z)

puts "Code = #{resp.code} #{resp.message}"

resp.each {|key, val| printf "%-14s = %-40.40s\n", key, val}

p data

rescue Net::ProtoFatalError => detail

head = detail.data

head.each {|key,val| puts "#{key} #{val}"}

if head.code=="404"

puts "File not Found"

elsif head.code=="401"

print "Authorization Required\n User name?"

gets

uname=$_.chomp

print "Password?"

gets

pwd=$_.chomp

unpwd=uname + ":" + pwd

puts unpwd

hval=[unpwd].pack("m")

z={'Authorization' => 'Basic ' + hval}

retry

end

rescue SystemCallError

puts "Can't connect"

end

fetch('www.google.com', 80, '/')

Send email
Send email with Ruby:

1 require 'net/smtp'
2 SMTP_HOST = "192.168.60.99"
3
4 def send(from, to, subject, msg)
5   mail = "To: #{to}\r\n" +
6          "From: #{from}\r\n" +
7          "Subject: #{subject}\r\n" +
8          "\r\n" +
9          msg
10
11   Net::SMTP.start(SMTP_HOST) do |smtp|
12     smtp.send_mail(mail, from, to)
13   end
14 end
15
16 from = "blake@192.168.60.99"
17 to = ["blake@192.168.60.99"]
18 send(from, to, "test", "Just a test!\ntest")

Notice:
1. 'mail' is the email body, it use "\r\n" to separate the mail header and mail context. So if you only want to send context without header, you should write: "mail = "\r\n" + msg". Otherwise your email will lost the context.

Calculate the total line number of files in one folder
This is one small tools to get the total file line number of on folder.

POST_FIX = %w{java jsp html xml properties}
2

EXCLUDE_DIR = %w{CVS}
3

$displayStr = ""
4

$fileReg = ""
5

$dirReg = "\\.|\\.\\.|"
6

def sumLine(fileName)
8

file = open fileName
9

begin
10

while file.gets()
11

end
12

ensure
13

file.close
14

end
15

$.
16

end
17

def iteDir(name, level=0)
19

lines = 0
20

dir = Dir.open name
21

rex = /\. + "java" +$|\.jsp$|\.html$/
22

begin
23

dir.each do |fileName|
24

fileName = dir.path + '/' + fileName
25

if File.ftype(fileName) =~ /directory/
26

if not fileName =~ Regexp.new($dirReg)
27

lines += iteDir(fileName, level+1)
28

else
29

next
30

end
31

elsif fileName =~ Regexp.new($fileReg)
32

lines += sumLine(fileName)
33

end
34

end
35

ensure
36

dir.close
37

end
38

str = ""
39

for i in 0..(level-1)
40

str += "\t|"
41

end
42

if level != 0
43

str += "---"
44

end
45

$displayStr = "#{str}#{name}\t#{lines} lines\n#{$displayStr}"
46

lines
47

end
48

POST_FIX.each do |postfix|
50

$fileReg += "\.#{postfix}$|"
51

end
52

$fileReg = $fileReg.chop
53

EXCLUDE_DIR.each do |excludeDir|
55

$dirReg += "^#{excludeDir}$|"
56

end
57

$dirReg = $dirReg.chop
58

print "Total #{iteDir("E:/_MyWorkSpace/IDEA_Proj")} lines\n"
60

print $displayStr

Keystone:
   1. Ruby I/O access. Dir and File
   2. Regexp & String -> Regexp
   3. Some kinds of variables
   4. Array operation

Technorati Tags: Ruby

Blake HAN 2005-06-02 16:37 ĺčĄ¨čŻčŽş

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