yoshitsugu/zen_to_i

Ruby: 全角数字、漢数字→半角数字に変換

ZenToI

兆までの漢数字を半角数字に変換します。 漢数字が続いていたらそれぞれ変換します。

Installation

install via rubygems

$ gem install zen_to_i

Or, you can use bundler. Please add this line to your application's Gemfile:

gem 'zen_to_i'

And then execute:

$ bundle

Usage

1. You can use zen_to_i command from your shell

$ zen_to_i "一二三"
123

# or you can use with pipe
$ echo "一二三" | zen_to_i
123

Please call bundle exec zen_to_i if you install this gem via bundler.

2. In your Ruby script

require 'zen_to_i'

"hoge".zen_to_i
#=> "hoge"

"一二三".zen_to_i
#=> "123"

"百三".zen_to_i
#=> "103"

"三兆五十二万四十八".zen_to_i
#=> "3000000520048"

Note that zen_to_i returns String, not Integer.

Or you can overwrite to_i method with Refinements.
This returns Integer same as default to_i method.

require "zen_to_i/refine"

using ZenToI::Refine

"一二三".zen_to_i
#=> "123"

"一二三".to_i
#=> 123

Also, you can implicitly overwrite to_i method by require "zen_to_i/string_ext".
Of course it is very dangerous. Please be careful to use it.

require "zen_to_i/string_ext"

"一二三".zen_to_i
#=> "123"

"一二三".to_i
#=> 123

Contributing

1. Fork it
2. Create your feature branch (git checkout -b my-new-feature)
3. Commit your changes (git commit -am 'Add some feature')
4. Push to the branch (git push origin my-new-feature)
5. Create new Pull Request