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added supporting method for converting data URL to Blob
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24
vfs.js
24
vfs.js
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@ -179,6 +179,30 @@ let VFS = function() {
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return dataUrl;
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return dataUrl;
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};
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};
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this.dataURLToBlob = function(dataURL) {
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// convert base64 to raw binary data held in a string
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// doesn't handle URLEncoded DataURIs - see SO answer #6850276 for code that does this
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var byteString = atob(dataURL.split(',')[1]);
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// separate out the mime component
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var mimeString = dataURL.split(',')[0].split(':')[1].split(';')[0]
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// write the bytes of the string to an ArrayBuffer
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var ab = new ArrayBuffer(byteString.length);
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// create a view into the buffer
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var ia = new Uint8Array(ab);
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// set the bytes of the buffer to the correct values
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for (var i = 0; i < byteString.length; i++) {
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ia[i] = byteString.charCodeAt(i);
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}
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// write the ArrayBuffer to a blob, and you're done
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var blob = new Blob([ab], {type: mimeString});
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return blob;
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};
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function getTypeFromName(filename) {
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function getTypeFromName(filename) {
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var parts = filename.split(".");
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var parts = filename.split(".");
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if (parts.length < 2) { return null; }
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if (parts.length < 2) { return null; }
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