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import.html
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import.html
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<!-- <input type="file" onchange="openPDF(this)" webkitdirectory> -->
<script src="text_layer.js"></script>
<script src="ui_utils.js"></script>
<script src="compatibility.js"></script>
<script src="pdf.js"></script>
<textarea style="width: 500px; position:absolute; right: 0; height: 100%; top: 0; z-index: 42" id="output"></textarea>
<link rel="stylesheet" href="pdf.css">
<script>
function openPDF(e){
console.log(e.files)
}
function cancel(e) {
if (e.preventDefault) { e.preventDefault(); }
return false;
}
var PDFQueue = [];
window.addEventListener('dragover', cancel, false)
window.addEventListener('dragenter', cancel, false);
window.addEventListener('drop', function(e){
var files = e.dataTransfer.files;
for(var i = 0; i < files.length; i++){
PDFQueue.push(files[i]);
}
if(queueActive == false){
processFromQueue();
}
e.preventDefault();
return false;
})
var queueActive = false;
function processFromQueue(){
if(PDFQueue.length == 0){
queueActive = false;
return;
}
queueActive = true;
var fr = new FileReader();
var file = PDFQueue.shift();
fr.onload = function(){
var bytes = new Uint8Array(fr.result)
console.log(file, fr);
var p = document.getElementsByClassName('page');
while(p.length > 0){
p[0].parentNode.removeChild(p[0]);
}
processDocument(bytes, file.name, function(){
processFromQueue()
})
}
fr.readAsArrayBuffer(file)
}
/*
* To Title Case 2.0.1 – http://individed.com/code/to-title-case/
* Copyright © 2008–2012 David Gouch. Licensed under the MIT License.
*/
String.prototype.toTitleCase = function () {
var smallWords = /^(a|an|and|as|at|but|by|en|for|if|in|of|on|or|the|to|vs?\.?|via)$/i;
return this.replace(/([^\W_]+[^\s-]*) */g, function (match, p1, index, title) {
if (index > 0 && index + p1.length !== title.length &&
p1.search(smallWords) > -1 && title.charAt(index - 2) !== ":" &&
title.charAt(index - 1).search(/[^\s-]/) < 0) {
return match.toLowerCase();
}
if (p1.substr(1).search(/[A-Z]|\../) > -1) {
return match;
}
return match.charAt(0).toUpperCase() + match.substr(1);
});
};
PDFJS.disableWorker = true;
function processDocument(bytes, filename, cb){
PDFJS.getDocument(bytes).then(function(pdf){
var num = 0;
var pages = [];
function nextPage(){
num++;
if(num > pdf.numPages){
console.log(pages);
var questions = [];
pages.forEach(function(page){
var mode = null;
var buffer = [];
page.forEach(function(line){
var trim = line.trim();
if(line.replace(/ /g, '') == 'TOSS-UP'){
mode = 1;
questions.push(buffer);
buffer = [];
}else if(trim == 'BONUS'){
mode = 2;
questions.push(buffer);
buffer = [];
}else{
buffer.push(trim)
}
})
questions.push(buffer);
})
questions = questions.filter(function(e){return e.length > 0})
var processed = questions.map(function(e){
var parts = e.join('\n').split('ANSWER:');
if(parts.length != 2){
console.error('could not find answer block', e);
return null;
}
var answer = parts[1].trim();
var body = parts[0].trim();
var match = body.match(/^(\d+)\s?\)\s+([A-Z ]+)\s+(Short Answer|Multiple Choice)/);
if(!match){
console.error('could not match pattern', e)
return null;
}
var type = 'scibowl';
if(match[3] == 'Multiple Choice'){
type = 'scibowl-multi';
}
var question = body.slice(match[0].length).trim().replace(/\n([^A-Z][^\)])/g, '$1').replace(/ +/g, ' ')
return {
type: type,
num: parseInt(match[1]),
round: filename,
tournament: "Web Sample",
difficulty: "MS",
category: match[2].toLowerCase().toTitleCase().trim(),
question: question,
answer: answer.toLowerCase().toTitleCase().trim()
}
}).filter(function(e){return e});
document.getElementById('output').value += processed.map(function(e){
return JSON.stringify(e)
}).join('\n') + '\n'
cb();
return;
}
pdf.getPage(num).then(function(page){
var scale = 1.0;
var viewport = page.getViewport(scale);
//
// Prepare canvas using PDF page dimensions
//
var container = document.createElement('div');
container.className = 'page'
var canvas = document.createElement('canvas');
var context = canvas.getContext('2d');
canvas.height = viewport.height;
canvas.width = viewport.width;
canvas.className = 'canvasWrapper';
// var backup = context.fillText;
// context.fillText = function(){
// console.log(arguments)
// console.log(context._transformMatrix)
// }
var text = document.createElement('div');
text.className = 'textLayer'
text.style.width = canvas.width + 'px';
text.style.height = canvas.height + 'px';
container.appendChild(canvas)
container.appendChild(text);
document.body.appendChild(container)
//
// Render PDF page into canvas context
//
var layer = new TextLayerBuilder({
textLayerDiv: text,
pageIndex: page.pageNumber - 1
})
// console.log(layer);
page.render({
canvasContext: context,
viewport: viewport,
textLayer: layer,
lastScrollSource: pdf
}).then(function(){
var double_line_height = 20;
var line_height = 5;
var space_width = 2;
var useful_width = 20;
var valid_y = layer.textDivs.filter(function(e){
return e.offsetWidth >= useful_width
}).map(function(e){
return parseInt(e.style.top)
})
function nearest_valid(val){
var min = Infinity;
var best = null;
valid_y.forEach(function(e){
if(min > Math.pow(e - val, 2)){
min = Math.pow(e - val, 2);
best = e;
}
});
return best;
}
function index(div){
var y = parseInt(div.style.top);
// console.log(div.offsetWidth);
if(div.offsetWidth < useful_width){
// console.log(div.innerText)
// console.log('$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$')
y = nearest_valid(y);
}
return y * 10000 + parseInt(div.style.left)
}
var sorted = layer.textDivs.sort(function(a, b){
return index(a) - index(b)
})
var lastLine = 0;
var lastX = 0;
var lines = [];
var buffer = [];
sorted.forEach(function(div){
var line = parseInt(div.style.top);
var text = div.innerText;
var x = parseFloat(div.style.left)
var trim = text.trim();
if(trim == ''){
}else{
// console.log(line - lastLine)
if(line - lastLine > double_line_height){
lines.push(buffer);
buffer = [];
}else if(line - lastLine > line_height){
buffer.push('\n')
}else if(x - lastX > space_width){
buffer.push(' ');
}
lastLine = line;
}
if(parseFloat(div.style.fontSize) < 10 && (trim != '–' && trim != '+')){
text = '^' + text;
}
buffer.push(text);
lastX = x + div.offsetWidth;;
})
lines.push(buffer);
var stuff = lines.map(function(e){return e.join('')});
if(/page/i.test(stuff[stuff.length - 1])){
stuff.pop();
}
if(stuff[0].trim() == ''){
stuff.shift();
}
if(/round/i.test(stuff[0])){
stuff.shift()
}
pages.push(stuff)
nextPage();
})
page.getTextContent().then(function(textContent){
layer.setTextContent(textContent)
})
})
}
nextPage();
})
}
</script>