122 lines
3.6 KiB
JavaScript
122 lines
3.6 KiB
JavaScript
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import React from 'react';
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import {DB} from '../static/storage'
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//var SQL = require('sql.js');
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//const moment = require('moment');
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var BASE64_MARKER = ';base64,';
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function convertDataURIToBinary(dataURI) {
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var base64Index = dataURI.indexOf(BASE64_MARKER) + BASE64_MARKER.length;
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var base64 = dataURI.substring(base64Index);
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var raw = window.atob(base64);
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var rawLength = raw.length;
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var array = new Uint8Array(new ArrayBuffer(rawLength));
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for(var i = 0; i < rawLength; i++) {
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array[i] = raw.charCodeAt(i);
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}
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return array;
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}
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export class FileLoader extends React.Component {
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constructor(props) {
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super(props);
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this.handleFileSelect = this.handleFileSelect.bind(this);
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this.createNew = this.createNew.bind(this);
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}
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b64toBlob(b64Data, contentType, sliceSize) {
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contentType = contentType || '';
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sliceSize = sliceSize || 512;
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var byteCharacters = atob(b64Data);
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var byteArrays = [];
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for (var offset = 0; offset < byteCharacters.length; offset += sliceSize) {
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var slice = byteCharacters.slice(offset, offset + sliceSize);
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var byteNumbers = new Array(slice.length);
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for (var i = 0; i < slice.length; i++) {
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byteNumbers[i] = slice.charCodeAt(i);
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}
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var byteArray = new Uint8Array(byteNumbers);
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byteArrays.push(byteArray);
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}
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var blob = new Blob(byteArrays, {type: contentType});
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return blob;
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}
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handleFileSelect(evt) {
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var files = evt.target.files; // FileList object
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// Loop through the FileList and render image files as thumbnails.
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for (var i = 0, f; f = files[i]; i++) {
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// Only process image files.
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/*if (!f.type.match('image.*')) {
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continue;
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}*/
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console.log(f.type)
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var reader = new FileReader();
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// Closure to capture the file information.
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var me = this;
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reader.onload = (function (theFile) {
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return function (e) {
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// Render thumbnail.
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console.log(e.target.result)
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console.log(theFile)
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var blob = me.b64toBlob(e.target.result.split('base64,')[1],theFile.type);
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console.log(blob)
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//var fi = new FileReader();
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//var f_ = fi.readAsDataURL(e.target.result);
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var uInt8Array = new Uint8Array(convertDataURIToBinary(e.target.result));
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DB.loadDB(uInt8Array);
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//DB.loadDate('2018-06-25 22:00:00.000 +00:00');
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};
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})(f);
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// Read in the image file as a data URL.
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reader.readAsDataURL(f);
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console.log(f)
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}
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}
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createNew(){
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DB.newDB();
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}
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render() {
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return (
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<div id="fileloader-frame">
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<div className="contents">
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<button onClick={this.createNew}>Neue Wochenberichtsmappe</button>
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<hr/>
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<input type="file" id="files" name="files[]" onChange={this.handleFileSelect}/>
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<output id="list"></output>
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<hr/>
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Erstellt von:<br/><a rel="noopener noreferrer" target="_blank" href="https://lucajaents.ch">Luca Jäntsch</a>
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</div>
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</div>);
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}
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}
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export class Export extends React.Component{
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constructor(props){
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super(props);
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this.state = {
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}
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}
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render(){
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return (
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<div>
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</div>
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)
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}
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} |