creating exchangerate gem repo

.gitignore

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+doc
+Manifest
+pkg

MIT-LICENSE

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+Copyright (c) 2010 Giridhar Bandi
+
+Permission is hereby granted, free of charge, to any person obtaining
+a copy of this software and associated documentation files (the
+"Software"), to deal in the Software without restriction, including
+without limitation the rights to use, copy, modify, merge, publish,
+distribute, sublicense, and/or sell copies of the Software, and to
+permit persons to whom the Software is furnished to do so, subject to
+the following conditions:
+
+The above copyright notice and this permission notice shall be
+included in all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
+LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
+OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
+WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.

README.rdoc

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+= EchangeRate 
+
+== Description
+This is a Ruby interface into the exchangerate-api service.
+
+== Installation
+
+gem install exhangerate
+
+== Usage 
+
+Before you use this library please get the api key from http://www.exchangerate-api.com/api-key
+
+require 'rubygems'
+require 'exchangerate'
+
+er=ExchangeRate.new("my-api-key")
+er.convert("USD","INR","300.00")
+
+
+

Rakefile

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+require 'rubygems'
+require 'rake'
+require 'echoe'
+
+Echoe.new('exchangerate', '0.1.0') do |p|
+  p.description    = "A gem to convert currencies with ease!"
+  p.url            = "http://github.com/giridhar/exhangerate"
+  p.author         = "Giridhar Bandi"
+  p.email          = "giridhar dot bandi at gmail.com"
+  p.ignore_pattern = ["tmp/*", "script/*"]
+  p.development_dependencies = []
+end
+

exchangerate.gemspec

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+# -*- encoding: utf-8 -*-
+
+Gem::Specification.new do |s|
+  s.name = %q{exchangerate}
+  s.version = "0.1.0"
+
+  s.required_rubygems_version = Gem::Requirement.new(">= 1.2") if s.respond_to? :required_rubygems_version=
+  s.authors = ["Giridhar Bandi"]
+  s.date = %q{2010-05-20}
+  s.description = %q{A gem to convert currencies with ease!}
+  s.email = %q{giridhar dot bandi at gmail.com}
+  s.extra_rdoc_files = ["README.rdoc", "lib/exchangerate.rb"]
+  s.files = ["MIT-LICENSE", "Manifest", "README.rdoc", "Rakefile", "exchangerate.gemspec", "lib/exchangerate.rb"]
+  s.homepage = %q{http://github.com/giridhar/exhangerate}
+  s.rdoc_options = ["--line-numbers", "--inline-source", "--title", "Exchangerate", "--main", "README.rdoc"]
+  s.require_paths = ["lib"]
+  s.rubyforge_project = %q{exchangerate}
+  s.rubygems_version = %q{1.3.7}
+  s.summary = %q{A gem to convert currencies with ease!}
+
+  if s.respond_to? :specification_version then
+    current_version = Gem::Specification::CURRENT_SPECIFICATION_VERSION
+    s.specification_version = 3
+
+    if Gem::Version.new(Gem::VERSION) >= Gem::Version.new('1.2.0') then
+    else
+    end
+  else
+  end
+end

lib/exchangerate.rb

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+require 'net/http'
+
+class UnsupportedCurrencyException < RuntimeError
+end
+
+class ExchangeRate
+  HOST = "www.exchangerate-api.com"
+  SUPPORTED_CODES=['EUR','USD','JPY','GBP','BGN','CZK','DKK','EEK','HUF','LTL','LVL','PLN','RON','SEK','CHF','NOK','HRK','RUB','TRY','AUD','BRL','CAD','CNY','HKD','IDR','INR','KRW','MXN','MYR','NZD','PHP','SGD','THB','ZAR']
+
+  def initialize(api_key)
+    @api_key = api_key
+  end
+
+  def convert(from_curr,to_curr,amount)
+    begin
+      raise UnsupportedCurrencyException, "The currency is not supported " if !SUPPORTED_CODES.include?(from_curr) || !SUPPORTED_CODES.include?(to_curr)
+      http = Net::HTTP.new(HOST, 80)
+      url = "/"+from_curr+"/"+to_curr+"/"+amount.to_s+"?k=#{@api_key}"
+      response = http.get(url)
+      return response.body
+    rescue => e
+      puts "Error: #{e}"
+    end
+  end
+end
+