Proposal for #13 Grab Document title from public page (#16)

* check how many args

Check to make sure that at least 2 args are being passed to mosbot,
this will avoid pulling bugs/docs with the id set to 0.

* Additional check

Realized that if '-o' or '-c' is passed in it would still be
possible for the id to be empty. So added an additional check
to see if the id is 0 where the type is checked.

* Proposal for #13 Grab Document title from public page

Added new function 'generate_public_url', I'm not sure that it handles
all cases though.

Added new function 'get_title', uses regex to get the page title.

Additional code to use these 2 functions and print the page title.

* Revert "Additional check"

This reverts commit cde04dc.
Shouldn't have been in this branch yet.

* Revert "check how many args"

This reverts commit 201d293.
Also shouldn't have been in this branch yet.

* Add error handling

Added some error handling to the 'get_title' function, it's very
basic but should prevent dumping errors should they arise.

Also adding title empty check to output to only print if there's a
title available.

bin/mosbot

@@ -59,5 +59,7 @@ if type == "help" || id == "0"
   display_help()
 else
   mosurl = generate_url(type, id)
-  handle_output(mosurl)
+  mospuburl = generate_public_url(id)
+  page_title = get_title(mospuburl)
+  handle_output(mosurl, page_title)
 end

lib/mosbot.rb

@@ -1,6 +1,7 @@
 #!/usr/bin/env ruby
 
 require 'rbconfig'
+require 'open-uri'
 
 def os
   @os ||= (
@@ -37,7 +38,26 @@ def generate_url(type, id)
   end
 end
 
-def handle_output(url)
+def generate_public_url(id)
+  id = id.sub('.', '_')
+  mospuburl = "https://support.oracle.com/knowledge/PeopleSoft%20Enterprise/"+id+".html"
+end
+
+def get_title(mospuburl)
+  begin
+    open(mospuburl) do |f|
+      str = f.read
+      page_title = str.scan(/<title>(.*?)<\/title>/)[0][0]
+    end
+  rescue
+    page_title = ''
+  end
+end
+
+def handle_output(url, title)
+  if !title.empty?
+    puts title
+  end
   puts url
 
   if "#{MOS_COPY_URL}" == "true"