Vpim :: Vcard - 解析vcard 2.1

Question

我的代码必须解析Vcard 2.1格式.我正在使用vpim(没有其他库)

当我跑步时Vpim::Vcard.decode(data)我得到错误:

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'

我gem install vcard尝试在RailsApp初始化之后运行并要求'vcard'directctry(在vpim gem之后config.gem不包括此文件).(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=

(异常类是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？

Answer 1

问题是String#each已经在Ruby 1.9.1中删除了.(其功能持久String#each_line).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代码以便String#each_line适当使用(并向vpim作者发送补丁)

• 您可以String通过定义each方法来修补类

  class String
    alias_method :each, :each_line
  end
  

• 切换到vcard gem,它取自VpimRuby 1.9.1支持.

我推荐第4个选项.