Class: Texrack::Endpoint

Inherits:
Sinatra::Base
  • Object
show all
Defined in:
lib/texrack/endpoint.rb

Instance Method Summary collapse

Instance Method Details

#render_png ⇒ Object 



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# File 'lib/texrack/endpoint.rb', line 29

def render_png
  begin
    output = Texrack::OutputFile.new(digest)
    unless output.exists?
      pdf_source = erb :latex
      pdf = Texrack::LatexToPdf.new(pdf_source, logger).generate_pdf
      Texrack::PdfToPng.new(pdf, trim?, logger).to_file(output)
      output.finish
    end

    set_headers
    send_file output, disposition: :inline
  rescue Texrack::LatexFailedError
    send_static_error "latex-failed.png"
  rescue Texrack::LatexNotFoundError
    logger.error "Could not find pdflatex in #{ENV['PATH']}"
    send_static_error "missing-pdflatex.png"
  rescue Texrack::ConvertNotFoundError
    logger.error "Could not find convert (ImageMagick) in #{ENV['PATH']}"
    send_static_error "missing-convert.png"
  end
end