Vpim :: Vcard - 解析vcard 2.1

时间:2010-08-08 04:13:08

标签: ruby vcard

我的代码必须解析Vcard 2.1格式。 我正在使用vpim(没有其他库)

当我运行Vpim::Vcard.decode(data)时,我收到错误:

undefined method `each' for #<String:0x0000000928e778>

堆栈跟踪:

  NoMethodError (undefined method `each' for #<String:0x0000000928e778>):
    vpim (0.695) lib/vpim/rfc2425.rb:82:in `unfold'
    vpim (0.695) lib/vpim/rfc2425.rb:308:in `decode'
    vpim (0.695) lib/vpim/vcard.rb:692:in `decode'
    app/models/event.rb:71:in `block (2 levels) in parse_data'

在RailsApp初始化之后,我尝试运行gem install vcard并要求'vcard'directctry(在vpim gem之后config.gem不包含此文件)。(config.gem 'vpim'包含在environment.rb中) 通过这种方式我得到另一个错误:

;=D0=9D=D0=B0=D0=B4=D1=80=D0=B0=20=D0=B1=D0=B0=D0=BD=D0=BA=20=D0=BE=D0=BB=

(例外类为Vpim::InvalidEncodingError

Vcard代码我尝试解析:

BEGIN:VCARD
VERSION:2.1
REV:20090710T151929Z
TEL;CELL:80954130722
X-CLASS:private
END:VCARD

有趣的是,第二个错误是我在Rails模型中解码时。 当我尝试直接从脚本/控制台解码时(在installinv vcard gem和direct包括'vcard'之后),我成功获得了Vcard对象。

堆栈跟踪:

   Vpim::InvalidEncodingError (;=D0=9D=D0=B0=D0=B4=D1=80=D0=B0=20=D0=B1=D0=B0=D0=BD=D0=BA=20=D0=BE=D0=BB=):
     vcard (0.1.1) lib/vcard/field.rb:106:in `decode0'
     vcard (0.1.1) lib/vcard/field.rb:172:in `initialize'
     vcard (0.1.1) lib/vcard/field.rb:183:in `new'
     vcard (0.1.1) lib/vcard/field.rb:183:in `decode'
     vcard (0.1.1) lib/vcard/rfc2425.rb:308:in `block in decode'
     vcard (0.1.1) lib/vcard/rfc2425.rb:308:in `collect'
     vcard (0.1.1) lib/vcard/rfc2425.rb:308:in `decode'
     vcard (0.1.1) lib/vcard/vcard.rb:686:in `decode'
     app/models/event.rb:71:in `block (2 levels) in parse_data'

app / models / event.rb:71:

vcard = Vpim::Vcard.decode(contact.text)

以下是来自irb的例子:

95-25-164-74:~ smix$ irb
ruby-1.9.2-rc2 > str = <<EOS
ruby-1.9.2-rc2"> BEGIN:VCARD
ruby-1.9.2-rc2"> VERSION:2.1
ruby-1.9.2-rc2"> REV:20090710T151929Z
ruby-1.9.2-rc2"> TEL;CELL:80954130722
ruby-1.9.2-rc2"> X-CLASS:private
ruby-1.9.2-rc2"> END:VCARD
ruby-1.9.2-rc2"> EOS
 => "BEGIN:VCARD\nVERSION:2.1\nREV:20090710T151929Z\nTEL;CELL:80954130722\nX-CLASS:private\nEND:VCARD\n" 
ruby-1.9.2-rc2 > require 'vpim'
 => true 
ruby-1.9.2-rc2 > Vpim::Vcard.decode str
NoMethodError: undefined method `each' for #<String:0x000001010e0428>
    from /Users/smix/.rvm/gems/ruby-1.9.2-rc2/gems/vpim-0.695/lib/vpim/rfc2425.rb:82:in `unfold'
    from /Users/smix/.rvm/gems/ruby-1.9.2-rc2/gems/vpim-0.695/lib/vpim/rfc2425.rb:308:in `decode'
    from /Users/smix/.rvm/gems/ruby-1.9.2-rc2/gems/vpim-0.695/lib/vpim/vcard.rb:692:in `decode'
    from (irb):10
    from /Users/smix/.rvm/rubies/ruby-1.9.2-rc2/bin/irb:17:in `<main>'
ruby-1.9.2-rc2 > 

如何在rails中解析Vcard 2.1?

1 个答案:

答案 0 :(得分:11)

问题是在Ruby 1.9.1中删除了String#each。 (其功能在String#each_line)持续。要修复/解决此错误,请执行以下任一操作:

  • 在Ruby 1.8.7上运行rails应用程序。
  • 您可以编辑Vpim代码以正确使用String#each_line(并向vpim作者发送补丁)
  • 您可以通过定义String方法对each类进行修补

    class String
      alias_method :each, :each_line
    end
    
  • 切换到vcard gem,取自Vpim并且支持Ruby 1.9.1。

我推荐第4个选项。