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CheezeNotes/static/modules/md.js

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function load(textarea, div) {
div.innerHTML = '';
let lines = textarea.value.split('\n');
let firsttableline = null;
for (let i = 0; i < lines.length; i++) {
let line = lines[i];
let elem = formatLine(line);
div.append(elem);
if (elem.classList.contains('tablerow')) {
if (firsttableline == null) {
firsttableline = elem;
}
} else if (firsttableline != null) {
formatTable(firsttableline);
firsttableline = null;
}
}
if (firsttableline != null) {
formatTable(firsttableline);
}
}
function save(textarea, div) {
let lines = div.children;
let text = '';
for (let i=0; i<lines.length; i++) {
if (lines[i].innerText != '\n') {
text += lines[i].innerText.replace(emsp(), '\t');
}
if (i < lines.length - 1) {
text += '\n';
}
}
textarea.value = text;
}
function emsp() {
return '';
}
function onlinkin(e) {
let link = e.currentTarget;
if (document.getElementById('mdnotes') !== document.activeElement) {
document.getElementById('mdnotes').contentEditable = false;
}
}
function onlink(e) {
let mdnotes = document.getElementById('mdnotes');
if (mdnotes.contentEditable == 'false') {
e.preventDefault();
mdnotes.contentEditable = true;
let link = e.currentTarget;
if (link.host !== document.location.host) {
open(link.href);
} else {
open(link.href, '_self');
}
return false;
} else {
return true;
}
}
function onlinkout(e) {
let mdnotes = document.getElementById('mdnotes');
if (mdnotes.contentEditable == 'false') {
mdnotes.contentEditable = true;
}
}
function formatLine(line) {
let token = null;
let elem = document.createElement('div');
elem.classList.add('mdnotes_line');
if (line == '' || line == '\n') {
elem.classList.add('body');
elem.innerHTML = '<br>';
return elem;
}
line = line.replace(/\t/, emsp());
line = line.replace('&', '&amp;');
line = line.replace('<', '&lt;');
let ret = removeMono(line);
line = ret[0];
let listMono = ret[1];
if (line.match(/^\s*-{3,}\s*$/)) {
token = /^(\s*-{3,}\s*)$/
elem.classList.add('line');
} else if (line.match(/^\s*####(\s|$)/i)) {
token = /^(\s*####(\s|$))/i;
elem.classList.add('h4');
} else if (line.match(/^\s*###(\s|$)/i)) {
token = /^(\s*###(\s|$))/i;
elem.classList.add('h3');
} else if (line.match(/^\s*##(\s|$)/)) {
token = /^(\s*##(\s|$))/i;
elem.classList.add('h2');
} else if (line.match(/^\s*#(\s|$)/i)) {
token = /^(\s*#(\s|$))/i;
elem.classList.add('h1');
} else if (line.match(/^\s*>\s*>\s*>(\s|$)/i)) {
token = /^(\s*>\s*>\s*>(\s|$))/i;
elem.classList.add('bq3');
elem.classList.add('bq');
} else if (line.match(/^\s*>\s*>(\s|$)/i)) {
token = /^(\s*>\s*>(\s|$))/i;
elem.classList.add('bq2');
elem.classList.add('bq');
} else if (line.match(/^\s*>(\s|$)/i)) {
token = /^(\s*>(\s|$))/i;
elem.classList.add('bq1');
elem.classList.add('bq');
} else {
elem.classList.add('body');
}
if (elem.classList.contains('bq') || elem.classList.contains('body')) {
if (line.match(/^\s*((>\s*){0,3}\s)?([\*\-+]\s*){3}(\s|$)/i)) {
token = /^(\s*(>\s*){0,3}([\*\-+]\s*){3}(\s|$))/i;
elem.classList.add('ul3');
elem.classList.remove('body');
} else if (line.match(/^\s*((>\s*){0,3}\s)?([\*\-+]\s*){2}(\s|$)/i)) {
token = /^(\s*(>\s*){0,3}([\*\-+]\s*){2}(\s|$))/i;
elem.classList.add('ul2');
elem.classList.remove('body');
} else if (line.match(/^\s*((>\s*){0,3}\s)?[\*\-+](\s|$)/i)) {
token = /^(\s*(>\s*){0,3}[\*\-+](\s*|$))/;
elem.classList.add('ul1');
elem.classList.remove('body');
} else if (line.match(/^\s*((>\s*){0,3}\s)?([0-9]+\.){3}(\s|$)/i)) {
token = /^(\s*(>\s*){0,3}(\s*|$))/;
elem.classList.add('ol3');
elem.classList.remove('body');
} else if (line.match(/^\s*((>\s*){0,3}\s)?([0-9]+\.){2}(\s|$)/i)) {
token = /^(\s*(>\s*){0,3}(\s*|$))/;
elem.classList.add('ol2');
elem.classList.remove('body');
} else if (line.match(/^\s*((>\s*){0,3}\s)?[0-9]+\.(\s|$)/i)) {
token = /^(\s*(>\s*){0,3}(\s*|$))/;
elem.classList.add('ol1');
elem.classList.remove('body');
}
}
if (token != null) {
line = line.replace(token, '<span class="token">$1</span>');
}
line = addLink(line);
line = addBold(line);
line = addItalic(line);
line = addTableLine(line);
line = addMono(line, listMono);
elem.innerHTML = line;
if (elem.getElementsByClassName('tablerow').length > 0) {
if (elem.childNodes[0].childNodes.length > 0) {
let child = elem.childNodes[0].childNodes[0];
while(child != null) {
if (child.nodeType == 3) {
let newchild = document.createElement('span');
newchild.innerText = child.nodeValue;
child.parentNode.replaceChild(newchild, child);
child = newchild;
}
child = child.nextSibling;
}
}
elem.classList.remove('body');
elem.classList.add('tablerow');
}
let links = elem.getElementsByClassName('link');
for (let i=0; i<links.length; i++) {
let link = links[i];
link.addEventListener('mouseover', onlinkin);
link.addEventListener('click', onlink);
link.addEventListener('mouseout', onlinkout);
}
return elem;
}
function addTableLine(line) {
if (line.match(/^\s*\|(\s*.*?\|)*/)) {
let cpt = 0;
let re = /\|/g;
let match;
let matches = [];
while ((match = re.exec(line)) != null) {
matches[cpt] = match.index;
if (cpt > 1000) {
continue;
}
cpt++;
}
matches = matches.reverse();
for(let i=0; i<matches.length; i++) {
let index = matches[i];
if (i == matches.length - 1) {
// premier |
line = line.substring(0, index) + '<span class="token">|</span><span class="lefttablespacer"></span>' + line.substring(index+1, line.length);
continue;
}
if (i == 0 && index == line.length - 1) {
// dernier |
line = line.substring(0, index) + '<span class="righttablespacer"></span><span class="token">|</span>' + line.substring(index+1, line.length);
continue;
}
line = line.substring(0, index) + '<span class="righttablespacer"></span><span class="token">|</span><span class="lefttablespacer"></span>' + line.substring(index+1, line.length);
}
line = '<span class="tablerow">' + line + '</span>';
}
return line;
}
function formatTable(line) {
if (! line.classList.contains('tablerow')) {
return;
}
let firstline = line;
let lastline = line;
while (firstline.previousSibling !== null && firstline.previousSibling.classList.contains('tablerow')) {
firstline = firstline.previousSibling;
firstline.classList.remove('firsttablerow');
firstline.classList.remove('lasttablerow');
}
while (lastline.nextSibling !== null && lastline.nextSibling.classList.contains('tablerow')) {
lastline = lastline.nextSibling;
lastline.classList.remove('firsttablerow');
lastline.classList.remove('lasttablerow');
}
firstline.classList.add('firsttablerow');
lastline.classList.add('lasttablerow');
resizeTableCols(firstline, lastline)
}
function resizeTableCols(firstline, lastline) {
let colsmaxwidth = [];
let currentline = firstline;
while (currentline !== null && currentline.classList.contains('tablerow')) {
let tablerow = currentline.getElementsByClassName('tablerow')[0];
let childNodes = tablerow.childNodes;
let currentwidth = 0;
let col = 0;
let currentleft;
for(let i=0; i<childNodes.length; i++) {
let child = childNodes[i];
if (currentleft == null && child.classList != null && child.classList.contains('lefttablespacer')) {
currentleft = child;
} else {
if (child.classList != null && child.classList.contains('righttablespacer')) {
if (colsmaxwidth[col] == null || colsmaxwidth[col] < currentwidth) {
colsmaxwidth[col] = currentwidth;
}
child.dataWidth = currentwidth;
currentleft.dataWidth = currentwidth;
currentleft = null;
currentwidth = 0;
col += 1;
} else {
let width = child.getBoundingClientRect().width;
currentwidth += width;
}
}
}
currentline = currentline.nextSibling;
}
currentline = firstline;
while (currentline !== null && currentline.classList.contains('tablerow')) {
let tablerow = currentline.getElementsByClassName('tablerow')[0];
let childNodes = tablerow.childNodes;
let col = 0;
let currentleft;
for(let i=0; i<childNodes.length; i++) {
let child = childNodes[i];
if (currentleft == null && child.classList != null && child.classList.contains('lefttablespacer')) {
currentleft = child;
} else {
if (child.classList != null && child.classList.contains('righttablespacer')) {
let leftwidth = 10;
let rightwidth = Math.ceil(colsmaxwidth[col] - child.dataWidth) + 10;
currentleft.style.width = '' + leftwidth + 'px';
child.style.width = '' + rightwidth + 'px';
currentleft = null;
col += 1;
}
}
}
currentline = currentline.nextSibling;
}
}
function removeMono(line) {
let listMono = line.match(/`(`|.*?)`/g);
if (listMono == null) {
return [line, null];
}
line = line.replace(/`(`|.*?)`/g, "``");
return [line, listMono.reverse()];
}
function addMono(line, listMono) {
if (listMono == null) {
return line;
}
let cpt = 0;
let match;
let matches = [];
let re = /``/g;
while ((match = re.exec(line)) != null) {
matches[cpt] = match.index;
if (cpt > 1000) {
continue;
}
cpt++;
}
matches = matches.reverse();
for(let i=0; i<matches.length; i++) {
let mono = listMono[i];
mono = mono.substring(1, mono.length - 1);
line = line.substring(0, matches[i]) + '<span class="token">`</span><span class="mono">' + mono + '</span><span class="token">`</span>' + line.substring(matches[i]+2, line.length);
}
return line;
}
function addLink(line) {
line = line.replace(/(\[([^\]]+?)\]\(([^\)]+?)\))/ig, '<span class="token">[</span><a class="link" data-href="$3" href="$3">$2</a><span class="token">]($3)</span>');
line = line.replace(/(\[([^\]]+?)\]\(\))/ig, '<span class="token">[</span><a class="link" data-href="$2" href="$2">$2</a><span class="token">]()</span>');
line = line.replace(/(\[\]\(([^\)]+?)\))/ig, '<span class="token">[](</span><a class="link" data-href="$2" href="$2">$2</a><span class="token">)</span>');
return line;
}
function addBold(line) {
line = line.replace(/\*\*([^\s].*?)\*\*/ig, '<span class="bold"><span class="token">**</span>$1<span class="token">**</span></span>');
line = line.replace(/__([^\s].*?)__/ig, '<span class="bold"><span class="token">__</span>$1<span class="token">__</span></span>');
return line;
}
function addItalic(line) {
line = line.replace(/(^|[^\*])\*([^\*\s].*?[^\*\s]|[^\*\s])\*([^\*]|$)/ig, '$1<span class="italic"><span class="token">*</span>$2<span class="token">*</span></span>$3');
line = line.replace(/(^|[^_])_([^_\s].*?[^_\s]|[^_\s])_([^_]|$)/ig, '$1<span class="italic"><span class="token">_</span>$2<span class="token">_</span></span>$3');
return line;
}
export { load, save, formatLine, formatTable };