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Converting PHP Code to Coldfusion

Posted on 2013-11-01
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Last Modified: 2013-11-01
I'm trying to implement a proxy for html2canvas (http://html2canvas.hertzen.com/) in Coldfusion.

I've found a script created in PHP but I have no experience and not much time to replicate the code in CF.

I did the following as of now in CF

What I'm not sure is the code (PHP file) in line 22

    $re_encoded_image = sprintf(
            'data:%s;base64,%s', $file_details["mime_type"], base64_encode($file_details["data"])
    );

    print "{$callback}(" . json_encode($re_encoded_image) . ")";

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I know that SerializeJSON = json_encode in PHP

<cfhttp url="#url.url#"    
	timeout="45"
    throwonerror="true"
    method="get"
	result="resp">
</cfhttp>
<cfset img = resp.fileContent />
<cfcontent type="application/javascript" />
<cfoutput>#url.callback#("#SerializeJSON(img)#");</cfoutput>

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Link to PHP file (https://github.com/adjdred/html2canvas-proxy-php/blob/master/proxy.php)

I've also attached the php file.
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Question by:ymorin007
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Accepted Solution

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_agx_ earned 2000 total points
ID: 39617856
I'm not real familiar with php, but looks like that part just returns a string with a base64 encoded image and mime type.

           data:some_mime_type_here;base64,base_64_encoded_image_here

If your cfhttp call returns a binary image, just grab the mime type and convert the fileContent to base64. Not tested, but something along these lines ...

     <!--- check for errors first obviously ...--->
     <cfset str = "data:"& resp.mimeType &";base64,"& binaryEncode(resp.fileContent, "base64")>

Then run it through SerializeJSON. But don't forget the brackets {} and parenthesis when you create the final string. The output should look something like this
 
     { your_callback_name_here }( your_json_string_here );
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Author Comment

by:ymorin007
ID: 39617906
Thanks a million you are my lifesaver ... It work perfectly.
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LVL 52

Expert Comment

by:_agx_
ID: 39617910
Great, glad I could help!
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