ruby – Vpim :: Vcard – 解析vcard 2.1

发布时间：2020-12-16 23:16:16 所属栏目：百科来源：网络整理

导读：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(数据)时,我收到错误： undefined method `each' for #String:0x0000000928e778 堆栈跟踪： NoMethodError (undefined method `each' for #String:0x0000000928e778

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(数据)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'

我尝试运行gem install vcard并在RailsApp初始化后要求’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 =

(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:VCARDnVERSION:2.1nREV:20090710T151929ZnTEL;CELL:80954130722nX-CLASS:privatenEND:VCARDn" 
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？

解决方法

问题是在Ruby 1.9.1中删除了String#. (它的功能在String#each_line中持久).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代码以适当地使用String#each_line(并向vpim作者发送补丁)
>您可以通过定义每个方法来修补String类

class String
  alias_method :each,:each_line
end

>切换到vcard gem,它取自Vpim并且支持Ruby 1.9.1.

我推荐第4个选项.

（编辑：李大同）

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