Class: Alexander::XslProcessor
- Inherits:
-
Object
- Object
- Alexander::XslProcessor
- Defined in:
- lib/alexander/xsl_processor.rb
Instance Method Summary collapse
- #body_to_string(body) ⇒ Object
- #call(env) ⇒ Object
- #detect_xslt_processing_instruction(xml) ⇒ Object
-
#initialize(app) ⇒ XslProcessor
constructor
A new instance of XslProcessor.
- #to_html(env, body) ⇒ Object
- #xlst_enable_browser?(env) ⇒ Boolean
- #xml?(headers) ⇒ Boolean
Constructor Details
#initialize(app) ⇒ XslProcessor
Returns a new instance of XslProcessor.
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# File 'lib/alexander/xsl_processor.rb', line 17 def initialize(app) @app = app end |
Instance Method Details
#body_to_string(body) ⇒ Object
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# File 'lib/alexander/xsl_processor.rb', line 67 def body_to_string(body) result = "" body.each { |it| result << it } body.close if body.respond_to? :close result end |
#call(env) ⇒ Object
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# File 'lib/alexander/xsl_processor.rb', line 21 def call(env) status, headers, body = @app.call(env) return [status, headers, body] unless xml?(headers) return [status, headers, body] if xlst_enable_browser?(env) html_response = to_html(env, body) return [status, headers, body] unless html_response headers["Content-type"] = "text/html" Rack::Response.new([html_response], status, headers).finish end |
#detect_xslt_processing_instruction(xml) ⇒ Object
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# File 'lib/alexander/xsl_processor.rb', line 62 def detect_xslt_processing_instruction(xml) match = xml.match(/<\?xml-stylesheet.*href="([^"]+)"/) return match[1] if match end |
#to_html(env, body) ⇒ Object
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# File 'lib/alexander/xsl_processor.rb', line 44 def to_html(env, body) xml = body_to_string(body) xslt_request = detect_xslt_processing_instruction(xml) return unless xslt_request ask_xslt = env.dup ask_xslt["PATH_INFO"] = xslt_request ask_xslt["REQUEST_PATH"] = xslt_request ask_xslt["REQUEST_URI"] = xslt_request ask_xslt["QUERY_STRING"] = "" status, headers, xslt = @app.call(ask_xslt) return unless status == 200 xml_parsed = Nokogiri::XML(xml) xsl_parsed = Nokogiri::XSLT(body_to_string(xslt)) xsl_parsed.transform(xml_parsed).to_s end |
#xlst_enable_browser?(env) ⇒ Boolean
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# File 'lib/alexander/xsl_processor.rb', line 38 def xlst_enable_browser?(env) return false unless env && env["HTTP_USER_AGENT"] user_agent = UserAgent.parse(env["HTTP_USER_AGENT"]) XSLT_ENABLE_BROWSERS.detect { |browser| user_agent >= browser } end |
#xml?(headers) ⇒ Boolean
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# File 'lib/alexander/xsl_processor.rb', line 34 def xml?(headers) headers["Content-Type"] =~ /\bapplication\/xml\b/ end |