Ruby/Network/FTP Client
Материал из Wiki.crossplatform.ru
change to any directory in the remote filesystem:
require "net/ftp" ftp = Net::FTP.new("ftp.ruby-lang.org") ftp.passive = true ftp.login(username, password) ftp.chdir("pub") ftp.chdir("/pub/ruby") ftp.list("*") { |file| puts file } ftp.close
Connecting to an FTP server with net/ftp using an FTP URL is a simple operation:
require "net/ftp" require "uri" uri = URI.parse("ftp://ftp.ruby-lang.org/") Net::FTP.open(uri.host) do |ftp| ftp.login "anonymous", "me@privacy.net" ftp.passive = true ftp.list(uri.path) { |path| puts path } end
Create a temporary file with Tempfile and upload from that
require "net/ftp" require "tempfile" tempfile = Tempfile.new("test") my_data = "This is some text data I want to upload via FTP." tempfile.puts my_data ftp = Net::FTP.new("ftp.domain.ru") ftp.passive = true ftp.login ftp.chdir("/your/folder/name/here") ftp.puttextfile(tempfile.path, "my_data") ftp.close tempfile.close
delete and rename files
require "net/ftp" ftp = Net::FTP.new("ftp.ruby-lang.org") ftp.passive = true ftp.login(username, password) ftp.rename(filename, new_name) ftp.list("*") { |file| puts file } ftp.close
Downloading Files
require "net/ftp" ftp = Net::FTP.new("ftp.ruby-lang.org") ftp.passive = true ftp.login ftp.chdir("/pub/ruby/1.8") ftp.getbinaryfile("1.8.2-patch1.gz") ftp.close
File Transfers with FTP
require "open-uri" output = File.new("1.8.2-patch1.gz", "w") open("ftp://ftp.ruby-lang.org/pub/ruby/1.8/1.8.2-patch1.gz") do |f| output.print f.read end output.close
Ftp mkdir
require "net/ftp" ftp = Net::FTP.new("ftp.ruby-lang.org") ftp.passive = true ftp.login(username, password) ftp.mkdir("test") ftp.list("*") { |file| puts file } ftp.close
if a username and password are required, use this code:
require "net/ftp" ftp = Net::FTP.new("ftp.ruby-lang.org") ftp.passive = true ftp.login(username, password) ftp.list("*") { |file| puts file } ftp.close
keep the user informed of the progress of the upload.
require "net/ftp" ftp = Net::FTP.new("ftp.domain.ru") ftp.passive = true ftp.login ftp.chdir("/your/folder/name/here") count = 0 ftp.putbinaryfile("local_file", "local_file", 100000) do |block| count += 100000 puts "#{count} bytes uploaded" end ftp.close
Net::FTP provides a login method that you can use against a Net::FTP object, like so:
require "net/ftp" ftp = Net::FTP.new("ftp.ruby-lang.org") ftp.passive = true ftp.login ftp.list("*") { |file| puts file } ftp.close
prints a string to the screen whenever another 100 kilobytes of the file have been downloaded.
require "net/ftp" ftp = Net::FTP.new("ftp.ruby-lang.org") ftp.passive = true ftp.login ftp.chdir("/pub/ruby/1.8") ftp.getbinaryfile("stable-snapshot.tar.gz", "local-filename", 102400) do |blk| puts "A 100KB block of the file has been downloaded" end ftp.close
Set the mode to passive
require "net/ftp" ftp = Net::FTP.new("ftp.ruby-lang.org") ftp.passive = true ftp.login(username, password) ftp.delete(filename) ftp.list("*") { |file| puts file } ftp.close
Uploading Files
require "net/ftp" ftp = Net::FTP.new("ftp.domain.ru") ftp.passive = true ftp.login ftp.chdir("/your/folder/name/here") ftp.putbinaryfile("local_file") ftp.close
use the chdir method:
require "net/ftp" ftp = Net::FTP.new("ftp.ruby-lang.org") ftp.passive = true ftp.login(username, password) ftp.chdir("pub") ftp.list("*") { |file| puts file } ftp.close
