173 lines
5.1 KiB
Plaintext
173 lines
5.1 KiB
Plaintext
note
|
|
description : "Basic Service that build a generic front end for the most used search engines."
|
|
date : "$Date$"
|
|
revision : "$Revision$"
|
|
|
|
class
|
|
APPLICATION_EXECUTION
|
|
|
|
inherit
|
|
WSF_EXECUTION
|
|
|
|
create
|
|
make
|
|
|
|
feature -- Basic operations
|
|
|
|
execute
|
|
-- Execute the incomming request
|
|
local
|
|
l_message: STRING
|
|
do
|
|
-- To send a response we need to setup, the status code and
|
|
-- the response headers.
|
|
if request.is_get_request_method then
|
|
if request.path_info.same_string ("/") then
|
|
response.put_header ({HTTP_STATUS_CODE}.ok, <<["Content-Type", "text/html"], ["Content-Length", web_page.count.out]>>)
|
|
response.put_string (web_page)
|
|
else
|
|
send_resouce_not_found (request, response)
|
|
end
|
|
elseif request.is_post_request_method then
|
|
if request.path_info.same_string ("/search") then
|
|
if attached {WSF_STRING} request.form_parameter ("query") as l_query then
|
|
if attached {WSF_STRING} request.form_parameter ("engine") as l_engine then
|
|
if attached {STRING} map.at (l_engine.value) as l_engine_url then
|
|
l_engine_url.append (l_query.value)
|
|
send_redirect (request, response, l_engine_url)
|
|
-- response.redirect_now (l_engine_url)
|
|
else
|
|
send_bad_request (request, response, " <strong>search engine: " + l_engine.value + "</strong> not supported,<br> try with Google or Bing")
|
|
end
|
|
else
|
|
send_bad_request (request, response, " <strong>search engine</strong> not selected")
|
|
end
|
|
else
|
|
send_bad_request (request, response, " form_parameter <strong>query</strong> is not present")
|
|
end
|
|
else
|
|
send_resouce_not_found (request, response)
|
|
end
|
|
else
|
|
create l_message.make_from_string (message_template)
|
|
l_message.replace_substring_all ("$title", "Method Not Allowed")
|
|
l_message.replace_substring_all ("$status", "Method Not Allowed 405")
|
|
-- Method not allowed
|
|
response.put_header ({HTTP_STATUS_CODE}.method_not_allowed, <<["Content-Type", "text/html"], ["Content-Length", l_message.count.out]>>)
|
|
response.put_string (l_message)
|
|
end
|
|
end
|
|
|
|
|
|
feature -- Engine Map
|
|
|
|
map : STRING_TABLE[STRING]
|
|
do
|
|
create Result.make (2)
|
|
Result.put ("http://www.google.com/search?q=", "Google")
|
|
Result.put ("http://www.bing.com/search?q=", "Bing")
|
|
end
|
|
|
|
feature -- Redirect
|
|
|
|
send_redirect (req: WSF_REQUEST; res: WSF_RESPONSE; a_location: READABLE_STRING_32)
|
|
-- Redirect to `a_location'
|
|
local
|
|
h: HTTP_HEADER
|
|
do
|
|
create h.make
|
|
h.put_content_type_text_html
|
|
h.put_current_date
|
|
h.put_location (a_location)
|
|
res.set_status_code ({HTTP_STATUS_CODE}.see_other)
|
|
res.put_header_text (h.string)
|
|
end
|
|
|
|
feature -- Bad Request
|
|
|
|
send_bad_request (req: WSF_REQUEST; res: WSF_RESPONSE; description: STRING)
|
|
local
|
|
l_message: STRING
|
|
do
|
|
create l_message.make_from_string (message_template)
|
|
l_message.replace_substring_all ("$title", "Bad Request")
|
|
l_message.replace_substring_all ("$status", "Bad Request" + description)
|
|
res.put_header ({HTTP_STATUS_CODE}.bad_request, <<["Content-Type", "text/html"], ["Content-Length", l_message.count.out]>>)
|
|
res.put_string (l_message)
|
|
end
|
|
|
|
feature -- Resource not found
|
|
|
|
send_resouce_not_found (req: WSF_REQUEST; res: WSF_RESPONSE)
|
|
local
|
|
l_message: STRING
|
|
do
|
|
create l_message.make_from_string (message_template)
|
|
l_message.replace_substring_all ("$title", "Resource not found")
|
|
l_message.replace_substring_all ("$status", "Resource " + req.request_uri + " not found 404")
|
|
res.put_header ({HTTP_STATUS_CODE}.not_found, <<["Content-Type", "text/html"], ["Content-Length", l_message.count.out]>>)
|
|
res.put_string (l_message)
|
|
end
|
|
|
|
feature -- Home Page
|
|
|
|
web_page: STRING = "[
|
|
<!DOCTYPE html>
|
|
<html>
|
|
<head>
|
|
<title>Generic Search Engine</title>
|
|
</head>
|
|
<body>
|
|
<div class="right">
|
|
<h2>Generic Search Engine</h2>
|
|
<form method="POST" action="/search" target="_blank">
|
|
<fieldset>
|
|
Search: <input type="search" name="query" placeholder="EWF framework"><br>
|
|
<div>
|
|
<input type="radio" name="engine" value="Google" checked><img src="http://ebizmba.ebizmbainc.netdna-cdn.com/images/logos/google.gif" height="24" width="42">
|
|
</div>
|
|
|
|
<div>
|
|
<input type="radio" name="engine" value="Bing"><img src="http://ebizmba.ebizmbainc.netdna-cdn.com/images/logos/bing.gif" height="24" width="42">
|
|
</div><br>
|
|
</fieldset>
|
|
<input type="submit">
|
|
</form>
|
|
|
|
|
|
</div>
|
|
<div id="footer">
|
|
<p><a href="http://www.ebizmba.com/articles/search-engines">Top 15 Most Popular Search Engines | March 2015</a></p>
|
|
</div>
|
|
</body>
|
|
</html>
|
|
]"
|
|
|
|
feature -- Generic Message
|
|
|
|
message_template: STRING="[
|
|
<!DOCTYPE html>
|
|
<html>
|
|
<head>
|
|
<title>$title</title>
|
|
</head>
|
|
<body>
|
|
<div id="header">
|
|
<p id="name">Use a tool to see the request and header details, for example (Developers tools in Chrome or Firebugs in Firefox)</p>
|
|
</div>
|
|
<div class="left"></div>
|
|
<div class="right">
|
|
<h4>This page is an example of $status</h4>
|
|
|
|
<div id="footer">
|
|
<p><a href="/">Back Home</a></p>
|
|
</div>
|
|
</body>
|
|
</html>
|
|
]"
|
|
|
|
|
|
|
|
|
|
end
|