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  1. #1
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    Default Unanswered: writing file from binary string problem

    Unanswered: writing file from binary string problem


    hello guys,

    i'm creating a pdf document and have the base64 string. i decode the string to a binary string and save the document with the ion writefile function but on saving it will change mutation letters like Ä, Ö, Ü (würzburg).

    But when i copy the binary string from the console and past it into a file it will not change.

    Code:
    var byteString = atob(pdf.getBase64Text());                            
    console.log(byteString);
    Ion.io.writeFile(Ion.io.tempPath + 'test.pdf', byteString);
                                
    Ion.util.openUrl('file:' + Ion.io.tempPath + 'test.pdf');
    kind regards
    malfurion

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    Is the byteString a "String" or a Number[] (array of numbers/bytes)? If the data being passed is a String, we automatically decode the string from the JavaScript UTF-16 representation into a UTF-8 encoding for writing to disk. When it's a Number[], we take each number as an unsigned 8-bit integer and write it directly to disk in binary form.

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    the byteString is a 'String' not a Number Array

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    Hey guys,


    we have a big problem with the Ion.io.writeFile() Method.


    We have a bas64 string and try to save it with your Ion.io.writeFile() method.
    The pdf looks like (see screenshot) and we spend about 5 days to fix this problem by ourselvs.


    The code is:
    Code:
    var dataUTF8 = unescape(encodeURIComponent(pdf.getBase64Text()));
    var dataBINARI = window.atob(dataUTF8); // we also tryed it without window.
    Ion.io.writeFile(Ion.io.tempPath + 'test.pdf', dataBINARI);                            
    Ion.util.openUrl('file:' + Ion.io.tempPath + 'test.pdf');
    2013-01-01 16_13_04-test.pdf - Adobe Reader.png

    If we use the latest Chrome with this code:
    Code:
    var theUrl = 'data:application/pdf;base64,' + pdf.getBase64Text();
    window.open(theUrl, '_blank');

    the pdf is generated properly (see second screenshot)!

    2013-01-01 16_10_11-data_application_pdf;base64,JVBERi0xLjQNCjEgMCBvYmoNCjw8L1RpdGxlIChTYW1wbGUg.png

    So what are we doing wrong??

    sincerly steffen(DOT)brunner[AT]itizzimo(DOT)com

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    Hello guys,

    I have fixed the problem i have find a way to convert the base64 to an numeric array


    Kind regards
    Malfurion

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    Quote Originally Posted by malfurion559 View Post
    Hello guys,

    I have fixed the problem i have find a way to convert the base64 to an numeric array


    Kind regards
    Malfurion
    Glad to hear you found a solution. Would you mind posting how you did it?

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