codimd/lib/note.js

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2015-05-04 07:53:29 +00:00
//note
//external modules
var LZString = require('lz-string');
var marked = require('marked');
var cheerio = require('cheerio');
//others
var db = require("./db.js");
//public
var note = {
checkNoteIdValid: checkNoteIdValid,
checkNoteExist: checkNoteExist,
getNoteTitle: getNoteTitle
};
function checkNoteIdValid(noteId) {
try {
//console.log(noteId);
var id = LZString.decompressFromBase64(noteId);
if (!id) return false;
var uuidRegex = /^[0-9a-f]{8}-[0-9a-f]{4}-[1-5][0-9a-f]{3}-[89ab][0-9a-f]{3}-[0-9a-f]{12}$/i;
var result = id.match(uuidRegex);
if (result && result.length == 1)
return true;
else
return false;
} catch (err) {
console.error(err);
return false;
}
}
function checkNoteExist(noteId) {
try {
//console.log(noteId);
var id = LZString.decompressFromBase64(noteId);
db.readFromDB(id, function (err, result) {
if (err) return false;
return true;
});
} catch (err) {
console.error(err);
return false;
}
}
//get title
function getNoteTitle(body) {
var $ = cheerio.load(marked(body));
var h1s = $("h1");
var title = "";
if (h1s.length > 0)
title = h1s.first().text();
else
title = "Untitled";
return title;
}
module.exports = note;