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Code Issues Releases Wiki Activity

add JS file hashing to fineuploader

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didnt instantiate it because needs UX
This commit is contained in:
diminator 2015-07-23 11:45:25 +02:00
parent 1b7b344605
commit 1a1f14e04c
2 changed files with 47 additions and 2 deletions
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46
js/components/ascribe_uploader/react_s3_fine_uploader.js
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@ -2,6 +2,7 @@
import React from 'react/addons';
import Raven from 'raven-js';
import SparkMD5 from 'spark-md5';
import { getCookie } from '../../utils/fetch_api_utils';
import { getLangText } from '../../utils/lang_utils';
@ -484,7 +485,8 @@ var ReactS3FineUploader = React.createClass({
this.state.uploader.addFiles(files);
let oldFiles = this.state.filesToUpload;
let oldAndNewFiles = this.state.uploader.getUploads();
// Compute the hash of the file instead of uploading... needs UX design!
// this.computeHashOfFile(0);
// Add fineuploader specific information to new files
for(let i = 0; i < oldAndNewFiles.length; i++) {
for(let j = 0; j < files.length; j++) {
@ -542,6 +544,48 @@ var ReactS3FineUploader = React.createClass({
});
this.setState(newState);
},
makeTextFile(text) {
let data = new Blob([text], {type: 'text/plain'});
return window.URL.createObjectURL(data);
},
computeHashOfFile(fileId) {
let blobSlice = File.prototype.slice || File.prototype.mozSlice || File.prototype.webkitSlice,
file = this.state.uploader.getFile(fileId),
chunkSize = 2097152, // Read in chunks of 2MB
chunks = Math.ceil(file.size / chunkSize),
currentChunk = 0,
spark = new SparkMD5.ArrayBuffer(),
fileReader = new FileReader();
let startTime = new Date();
fileReader.onload = function (e) {
//console.log('read chunk nr', currentChunk + 1, 'of', chunks);
spark.append(e.target.result); // Append array buffer
currentChunk++;
if (currentChunk < chunks) {
loadNext();
} else {
let fileHash = spark.end();
console.info('computed hash %s (took %d s)',
fileHash,
Math.round(((new Date() - startTime) / 1000) % 60)); // Compute hash
console.log(this.makeTextFile(fileHash));
}
}.bind(this);
fileReader.onerror = function () {
console.warn('oops, something went wrong.');
};
function loadNext() {
var start = currentChunk * chunkSize,
end = ((start + chunkSize) >= file.size) ? file.size : start + chunkSize;
fileReader.readAsArrayBuffer(blobSlice.call(file, start, end));
}
loadNext();
},
render() {
return (

3
package.json
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@ -83,7 +83,8 @@
"vinyl-buffer": "^1.0.0",
"vinyl-source-stream": "^1.1.0",
"watchify": "^3.1.2",
"yargs": "^3.10.0"
"yargs": "^3.10.0",
"spark-md5": "~1.0.0"
},
"jest": {
"scriptPreprocessor": "node_modules/babel-jest",