(function() {
// Convert Uint8Array to base64 string
// https://gist.github.com/jonleighton/958841
function base64ArrayBuffer(bytes) {
var base64 = ''
var encodings = 'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/'
var byteLength = bytes.byteLength
var byteRemainder = byteLength % 3
var mainLength = byteLength - byteRemainder
var a, b, c, d
var chunk
// Main loop deals with bytes in chunks of 3
for (var i = 0; i < mainLength; i = i + 3) {
// Combine the three bytes into a single integer
chunk = (bytes[i] << 16) | (bytes[i + 1] << 8) | bytes[i + 2]
// Use bitmasks to extract 6-bit segments from the triplet
a = (chunk & 16515072) >> 18 // 16515072 = (2^6 - 1) << 18
b = (chunk & 258048) >> 12 // 258048 = (2^6 - 1) << 12
c = (chunk & 4032) >> 6 // 4032 = (2^6 - 1) << 6
d = chunk & 63 // 63 = 2^6 - 1
// Convert the raw binary segments to the appropriate ASCII encoding
base64 += encodings[a] + encodings[b] + encodings[c] + encodings[d]
}
// Deal with the remaining bytes and padding
if (byteRemainder == 1) {
chunk = bytes[mainLength]
a = (chunk & 252) >> 2 // 252 = (2^6 - 1) << 2
// Set the 4 least significant bits to zero
b = (chunk & 3) << 4 // 3 = 2^2 - 1
base64 += encodings[a] + encodings[b] + '=='
} else if (byteRemainder == 2) {
chunk = (bytes[mainLength] << 8) | bytes[mainLength + 1]
a = (chunk & 64512) >> 10 // 64512 = (2^6 - 1) << 10
b = (chunk & 1008) >> 4 // 1008 = (2^6 - 1) << 4
// Set the 2 least significant bits to zero
c = (chunk & 15) << 2 // 15 = 2^4 - 1
base64 += encodings[a] + encodings[b] + encodings[c] + '='
}
return base64
}
/**
* ENMLOfPlainText
* @param { string } text (Plain)
* @return string - ENML
*/
function ENMLOfPlainText(text){
var writer = new XMLWriter();
writer.startDocument = writer.startDocument || writer.writeStartDocument;
writer.endDocument = writer.endDocument || writer.writeEndDocument;
writer.startDocument = writer.startElement || writer.writeStartElement;
writer.startDocument = writer.endElement || writer.writeEndElement;
writer.startDocument('1.0', 'UTF-8', false);
writer.write('<!DOCTYPE en-note SYSTEM "http://xml.evernote.com/pub/enml2.dtd">');
writer.write("\n");
writer.startElement('en-note');
writer.writeAttribute('style', 'word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space;');
var lines = text.match(/^.*((\r\n|\n|\r)|$)/gm);
lines.forEach(function(line) {
writer.text("\n");
writer.startElement('div');
writer.text(line.replace(/(\r\n|\n|\r)/,''));
writer.endElement();
});
writer.text("\n");
writer.endElement();
writer.endDocument();
return writer.toString();
}
/**
* PlainTextOfENML
* @param { string } text (ENML)
* @return string - text
*/
function PlainTextOfENML(enml){
var text = enml || '';
text = text.replace(/(\r\n|\n|\r)/gm," ");
text = text.replace(/(<\/(div|ui|li|p|table|tr|dl)>)/ig,"\n");
text = text.replace(/^\s/gm,"");
text = text.replace(/(<(li)>)/ig," - ");
text = text.replace(/(<([^>]+)>)/ig,"");
text = text.trim()
return text;
}
function bufferToBase64(buf) {
var binstr = Array.prototype.map.call(buf, function (ch) {
return String.fromCharCode(ch);
}).join('');
return btoa(binstr);
}
/**
* HTMLOfENML
* Convert ENML into HTML for showing in web browsers.
*
* @param { string } text (ENML)
* @param { Map <string (hash), url (string) || { url: (string), title: (string) } >, Optional } resources
* @return string - HTML
*/
function HTMLOfENML(text, resources){
resources = resources || [];
var resource_map = {}
resources.forEach(function(resource){
var hex = [].map.call( resource.data.bodyHash.data,
function(v) { str = v.toString(16);
return str.length < 2 ? "0" + str : str; }).join("");
resource_map[hex] = resource;
})
var writer = new XMLWriter();
var parser = new SaxParser(function(cb) {
var mediaTagStarted = false;
var linkTagStarted = false;
var linkTitle;
cb.onStartElementNS(function(elem, attrs, prefix, uri, namespaces) {
if(elem == 'en-note'){
writer.startElement('html');
writer.startElement('head');
writer.startElement('meta');
writer.writeAttribute('http-equiv', 'Content-Type');
writer.writeAttribute('content', 'text/html; charset=UTF-8');
writer.endElement();
writer.endElement();
writer.startElement('body');
if(!(attrs && attrs[0] && attrs[0][0] && attrs[0][0] === 'style'))
writer.writeAttribute('style', 'word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space;');
} else if(elem == 'en-todo'){
writer.startElement('input');
writer.writeAttribute('type', 'checkbox');
} else if(elem == 'en-media'){
var type = null;
var hash = null;
var width = 0;
var height = 0;
if(attrs) attrs.forEach(function(attr) {
if(attr[0] == 'type') type = attr[1];
if(attr[0] == 'hash') hash = attr[1];
if(attr[0] == 'width') width = attr[1];
if(attr[0] == 'height') height = attr[1];
});
var resource = resource_map[hash];
if(!resource) return;
var resourceTitle = resource.title || '';
if(type.match('image')) {
writer.startElement('img');
writer.writeAttribute('title', resourceTitle);
} else if(type.match('audio')) {
writer.writeElement('p', resourceTitle);
writer.startElement('audio');
writer.writeAttribute('controls', '');
writer.text('Your browser does not support the audio tag.');
writer.startElement('source');
mediaTagStarted = true;
} else if(type.match('video')) {
writer.writeElement('p', resourceTitle);
writer.startElement('video');
writer.writeAttribute('controls', '');
writer.text('Your browser does not support the video tag.');
writer.startElement('source');
mediaTagStarted = true;
} else {
writer.startElement('a');
linkTagStarted = true;
linkTitle = resourceTitle;
}
if(resource.data.body) {
var b64encoded = bufferToBase64(resource.data.body.data)
var src = 'data:'+type+';base64,'+b64encoded;
writer.writeAttribute('src', src)
}
if(width) writer.writeAttribute ('width', width);
if(height) writer.writeAttribute('height', height);
} else {
writer.startElement(elem);
}
if(attrs) attrs.forEach(function(attr) {
writer.writeAttribute(attr[0], attr[1]);
});
});
cb.onEndElementNS(function(elem, prefix, uri) {
if(elem == 'en-note'){
writer.endElement(); //body
writer.endElement(); //html
}
else if(elem == 'en-todo'){
}
else if(elem == 'en-media'){
if(mediaTagStarted) {
writer.endElement(); // source
writer.endElement(); // audio or video
writer.writeElement('br', '');
mediaTagStarted = false;
} else if(linkTagStarted) {
writer.text(linkTitle);
writer.endElement(); // a
linkTagStarted = false;
} else {
writer.endElement();
}
} else {
writer.endElement();
}
});
cb.onCharacters(function(chars) {
writer.text(chars);
});
});
parser.parseString(text);
return writer.toString();
}
/**
* TodosOfENML
* Extract data of all TODO(s) in ENML text.
*
* @param { string } text (ENML)
* @return { Array [ { text: (string), done: (bool) } ] } -
*/
function TodosOfENML(text){
var todos = [];
var parser = new SaxParser(function(cb) {
var onTodo = false;
var text = null;
var checked = false;
cb.onStartElementNS(function(elem, attrs, prefix, uri, namespaces) {
var m = elem.match(/b|u|i|font|strong/);
if(m && elem == m[0]){
}
else if(elem == 'en-todo'){
checked = false;
text = "";
onTodo = true;
if(attrs) attrs.forEach(function(attr) {
if(attr[0] == 'checked' && attr[1] == 'true') checked = true;
});
} else {
if(onTodo){
todos.push({text: text, checked: checked});
}
onTodo = false;
}
});
cb.onEndElementNS(function(elem, prefix, uri) {
});
cb.onCharacters(function(chars) {
if(onTodo){
text += chars;
}
});
cb.onEndDocument(function(){
if (onTodo) {
todos.push({text: text, checked: checked});
}
});
});
parser.parseString(text);
return todos;
}
/**
* CheckTodoInENML
* Rewrite ENML content by changing check/uncheck value of the TODO in given position.
*
* @param { string } text (ENML)
* @param { int } index
* @param { bool } check
* @return string - ENML (the new content)
*/
function CheckTodoInENML(text, index, check){
var todo_cout = 0;
var writer = new XMLWriter();
var parser = new SaxParser(function(cb) {
cb.onStartElementNS(function(elem, attrs, prefix, uri, namespaces) {
writer.startElement(elem);
if(elem == 'en-todo' && index == todo_cout++){
if(attrs) attrs.forEach(function(attr) {
if(attr[0] == 'checked') return;
writer.writeAttribute(attr[0], attr[1]);
});
if(check) writer.writeAttribute('checked', 'true');
}else{
if(attrs) attrs.forEach(function(attr) {
writer.writeAttribute(attr[0], attr[1]);
});
}
});
cb.onEndElementNS(function(elem, prefix, uri) {
writer.endElement();
});
cb.onCharacters(function(chars) {
writer.text(chars);
});
});
parser.parseString(text);
return writer.toString();
}
var XMLWriter;
var SaxParser;
if(typeof exports == 'undefined'){
XMLWriter = window.XMLWriter;
SaxParser = window.SaxParser;
//Browser Code
window.enml = {};
window.enml.ENMLOfPlainText = ENMLOfPlainText;
window.enml.HTMLOfENML = HTMLOfENML;
window.enml.PlainTextOfENML = PlainTextOfENML;
window.enml.TodosOfENML = TodosOfENML;
window.enml.CheckTodoInENML = CheckTodoInENML;
}
else{
//Node JS
XMLWriter = require('./lib/xml-writer');
SaxParser = require('./lib/xml-parser').SaxParser;
exports.ENMLOfPlainText = ENMLOfPlainText;
exports.HTMLOfENML = HTMLOfENML;
exports.PlainTextOfENML = PlainTextOfENML;
exports.TodosOfENML = TodosOfENML;
exports.CheckTodoInENML = CheckTodoInENML;
}
})();