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@ -3,8 +3,38 @@ require "http/headers"
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require "http/request"
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require "ishi/html"
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require "json"
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require "uuid"
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class Handler
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def format_buffer(buffer, canvas_name)
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# Process the gnuplot output so it works in the page
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#
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# buffer is the Ishi output
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# name is a string to replace for gnuplot_canvas so
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# we can have multiple charts in a page
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html = buffer.to_s.split("\n")
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html = html[html.index("<script type=\"text/javascript\">")..html.index("</script>")]
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html = html.join("\n") + %(
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<div class="gnuplot">
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<canvas id="Tile" width="32" height="32" hidden></canvas>
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<table class="plot">
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<tr><td>
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<canvas id="gnuplot_canvas" width="800" height="300" tabindex="0">
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Sorry, your browser seems not to support the HTML 5 canvas element
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</canvas>
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</td></tr>
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</table>
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<script type="text/javascript" defer>
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gnuplot.init(); gnuplot_canvas();
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</script>
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</div>
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)
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# This ID needs to be unique in case
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# we have 2 charts in the same page
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html.gsub("gnuplot_canvas", canvas_name)
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end
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def query(sql)
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params = URI::Params.encode({"q": sql})
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response = HTTP::Client.get URI.new(
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@ -70,27 +100,8 @@ class Handler
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}
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end
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# This is a whole page, we just need some bits
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html = buffer.to_s.split("\n")
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html = html[html.index("<script type=\"text/javascript\">")..html.index("</script>")]
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html = html.join("\n") + %(
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<div class="gnuplot">
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<canvas id="Tile" width="32" height="32" hidden></canvas>
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<table class="plot">
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<tr><td>
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<canvas id="gnuplot_canvas" width="800" height="300" tabindex="0">
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Sorry, your browser seems not to support the HTML 5 canvas element
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</canvas>
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</td></tr>
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</table>
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<script type="text/javascript" defer>
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gnuplot.init(); gnuplot_canvas();
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</script>
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</div>
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)
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{
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body: html,
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body: format_buffer(buffer, "historico"),
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status_code: 200,
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headers: HTTP::Headers{"Content-Type" => "text/html"},
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}
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