base64: 改行が入った/ない場合の戻し

rubyは改行はずしても戻る。

hdknr@deb09:~/openidtx/openidtx/samples/cx$ irb
irb(main):001:0> require 'base64'
=> true
irb(main):002:0> Base64.encode64(open('openid.py').read).split.length
=> 166
irb(main):003:0> Base64.decode64(Base64.encode64(open('/etc/resolv.conf').read))
=> "nameserver 127.0.0.1\nnameserver 192.168.250.2\n"
irb(main):004:0> Base64.decode64(Base64.encode64(open('/etc/resolv.conf').read).gsub("\n",""))
=> "nameserver 127.0.0.1\nnameserver 192.168.250.2\n"
irb(main):009:0> Base64.decode64(Base64.encode64(open('openid.py').read).gsub("\n",""))

phpも問題ない。

hdknr@deb09:~/openidtx/openidtx/samples/cx$ more test.php
<?php
echo base64_decode(file_get_contents(‘hoge.txt’));

hdknr@deb09:~/openidtx/openidtx/samples/cx$ more hoge.rb
require ‘base64’
puts Base64.encode64( open(‘openid.py’).read )

hdknr@deb09:~/openidtx/openidtx/samples/cx$ ruby hoge.rb  > hoge.txt
hdknr@deb09:~/openidtx/openidtx/samples/cx$ wc hoge.txt
  166   166 10094 hoge.txt
hdknr@deb09:~/openidtx/openidtx/samples/cx$ php test.php

でもとにもどる。

pythonも戻る 

hdknr@deb09:~/openidtx/openidtx/samples/cx$ irb
irb(main):001:0> b64encode(open('openid.py').read).split.length
hdknr@deb09:~/openidtx/openidtx/samples/cx$ python
Python 2.5.2 (r252:60911, Jan  4 2009, 17:40:26)
[GCC 4.3.2] on linux2
Type "help", "copyright", "credits" or "license" for more information.
>>> import base64
>>> base64.b64encode( ''.join(open('/etc/resolv.conf').readlines()))
'bmFtZXNlcnZlciAxMjcuMC4wLjEKbmFtZXNlcnZlciAxOTIuMTY4LjI1MC4yCg=='
>>> base64.b64decode(base64.b64encode( ''.join(open('/etc/resolv.conf').readlines())))
'nameserver 127.0.0.1\nnameserver 192.168.250.2\n'
>>> base64.b64decode(base64.encodestring( ''.join(open('/etc/resolv.conf').readlines())))
'nameserver 127.0.0.1\nnameserver 192.168.250.2\n'

また、

hdknr@deb09:~/openidtx/openidtx/samples/cx$ python
Python 2.5.2 (r252:60911, Jan  4 2009, 17:40:26)
[GCC 4.3.2] on linux2
Type "help", "copyright", "credits" or "license" for more information.
>>> import base64
>>> base64.b64decode(''.join(open('hoge.txt').readlines()))

でもどりました。

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