mirror of
https://github.com/laurent22/joplin.git
synced 2024-12-15 09:04:04 +02:00
621 lines
18 KiB
JavaScript
621 lines
18 KiB
JavaScript
import stringPadding from 'string-padding';
|
|
|
|
const BLOCK_OPEN = "[[BLOCK_OPEN]]";
|
|
const BLOCK_CLOSE = "[[BLOCK_CLOSE]]";
|
|
const NEWLINE = "[[NEWLINE]]";
|
|
const NEWLINE_MERGED = "[[MERGED]]";
|
|
const SPACE = "[[SPACE]]";
|
|
|
|
function processMdArrayNewLines(md) {
|
|
while (md.length && md[0] == BLOCK_OPEN) {
|
|
md.shift();
|
|
}
|
|
|
|
while (md.length && md[md.length - 1] == BLOCK_CLOSE) {
|
|
md.pop();
|
|
}
|
|
|
|
let temp = [];
|
|
let last = '';
|
|
for (let i = 0; i < md.length; i++) { let v = md[i];
|
|
if (isNewLineBlock(last) && isNewLineBlock(v) && last == v) {
|
|
// Skip it
|
|
} else {
|
|
temp.push(v);
|
|
}
|
|
last = v;
|
|
}
|
|
md = temp;
|
|
|
|
|
|
|
|
temp = [];
|
|
last = "";
|
|
for (let i = 0; i < md.length; i++) { let v = md[i];
|
|
if (last == BLOCK_CLOSE && v == BLOCK_OPEN) {
|
|
temp.pop();
|
|
temp.push(NEWLINE_MERGED);
|
|
} else {
|
|
temp.push(v);
|
|
}
|
|
last = v;
|
|
}
|
|
md = temp;
|
|
|
|
|
|
|
|
temp = [];
|
|
last = "";
|
|
for (let i = 0; i < md.length; i++) { let v = md[i];
|
|
if (last == NEWLINE && (v == NEWLINE_MERGED || v == BLOCK_CLOSE)) {
|
|
// Skip it
|
|
} else {
|
|
temp.push(v);
|
|
}
|
|
last = v;
|
|
}
|
|
md = temp;
|
|
|
|
|
|
|
|
// NEW!!!
|
|
temp = [];
|
|
last = "";
|
|
for (let i = 0; i < md.length; i++) { let v = md[i];
|
|
if (last == NEWLINE && (v == NEWLINE_MERGED || v == BLOCK_OPEN)) {
|
|
// Skip it
|
|
} else {
|
|
temp.push(v);
|
|
}
|
|
last = v;
|
|
}
|
|
md = temp;
|
|
|
|
|
|
|
|
|
|
if (md.length > 2) {
|
|
if (md[md.length - 2] == NEWLINE_MERGED && md[md.length - 1] == NEWLINE) {
|
|
md.pop();
|
|
}
|
|
}
|
|
|
|
let output = '';
|
|
let previous = '';
|
|
let start = true;
|
|
for (let i = 0; i < md.length; i++) { let v = md[i];
|
|
let add = '';
|
|
if (v == BLOCK_CLOSE || v == BLOCK_OPEN || v == NEWLINE || v == NEWLINE_MERGED) {
|
|
add = "\n";
|
|
} else if (v == SPACE) {
|
|
if (previous == SPACE || previous == "\n" || start) {
|
|
continue; // skip
|
|
} else {
|
|
add = " ";
|
|
}
|
|
} else {
|
|
add = v;
|
|
}
|
|
start = false;
|
|
output += add;
|
|
previous = add;
|
|
}
|
|
|
|
if (!output.trim().length) return '';
|
|
|
|
return output;
|
|
}
|
|
|
|
function isWhiteSpace(c) {
|
|
return c == '\n' || c == '\r' || c == '\v' || c == '\f' || c == '\t' || c == ' ';
|
|
}
|
|
|
|
// Like QString::simpified(), except that it preserves non-breaking spaces (which
|
|
// Evernote uses for identation, etc.)
|
|
function simplifyString(s) {
|
|
let output = '';
|
|
let previousWhite = false;
|
|
for (let i = 0; i < s.length; i++) {
|
|
let c = s[i];
|
|
let isWhite = isWhiteSpace(c);
|
|
if (previousWhite && isWhite) {
|
|
// skip
|
|
} else {
|
|
output += c;
|
|
}
|
|
previousWhite = isWhite;
|
|
}
|
|
|
|
while (output.length && isWhiteSpace(output[0])) output = output.substr(1);
|
|
while (output.length && isWhiteSpace(output[output.length - 1])) output = output.substr(0, output.length - 1);
|
|
|
|
return output;
|
|
}
|
|
|
|
function collapseWhiteSpaceAndAppend(lines, state, text) {
|
|
if (state.inCode) {
|
|
text = "\t" + text;
|
|
lines.push(text);
|
|
} else {
|
|
// Remove all \n and \r from the left and right of the text
|
|
while (text.length && (text[0] == "\n" || text[0] == "\r")) text = text.substr(1);
|
|
while (text.length && (text[text.length - 1] == "\n" || text[text.length - 1] == "\r")) text = text.substr(0, text.length - 1);
|
|
|
|
// Collapse all white spaces to just one. If there are spaces to the left and right of the string
|
|
// also collapse them to just one space.
|
|
let spaceLeft = text.length && text[0] == ' ';
|
|
let spaceRight = text.length && text[text.length - 1] == ' ';
|
|
text = simplifyString(text);
|
|
|
|
if (!spaceLeft && !spaceRight && text == "") return lines;
|
|
|
|
if (spaceLeft) lines.push(SPACE);
|
|
lines.push(text);
|
|
if (spaceRight) lines.push(SPACE);
|
|
}
|
|
|
|
return lines;
|
|
}
|
|
|
|
const imageMimeTypes = ["image/cgm", "image/fits", "image/g3fax", "image/gif", "image/ief", "image/jp2", "image/jpeg", "image/jpm", "image/jpx", "image/naplps", "image/png", "image/prs.btif", "image/prs.pti", "image/t38", "image/tiff", "image/tiff-fx", "image/vnd.adobe.photoshop", "image/vnd.cns.inf2", "image/vnd.djvu", "image/vnd.dwg", "image/vnd.dxf", "image/vnd.fastbidsheet", "image/vnd.fpx", "image/vnd.fst", "image/vnd.fujixerox.edmics-mmr", "image/vnd.fujixerox.edmics-rlc", "image/vnd.globalgraphics.pgb", "image/vnd.microsoft.icon", "image/vnd.mix", "image/vnd.ms-modi", "image/vnd.net-fpx", "image/vnd.sealed.png", "image/vnd.sealedmedia.softseal.gif", "image/vnd.sealedmedia.softseal.jpg", "image/vnd.svf", "image/vnd.wap.wbmp", "image/vnd.xiff"];
|
|
|
|
function isImageMimeType(m) {
|
|
return imageMimeTypes.indexOf(m) >= 0;
|
|
}
|
|
|
|
function addResourceTag(lines, resource, alt = "") {
|
|
let tagAlt = alt == "" ? resource.alt : alt;
|
|
if (!tagAlt) tagAlt = '';
|
|
if (isImageMimeType(resource.mime)) {
|
|
lines.push("![");
|
|
lines.push(tagAlt);
|
|
lines.push("](:/" + resource.id + ")");
|
|
} else {
|
|
lines.push("[");
|
|
lines.push(tagAlt);
|
|
lines.push("](:/" + resource.id + ")");
|
|
}
|
|
|
|
return lines;
|
|
}
|
|
|
|
|
|
function isBlockTag(n) {
|
|
return n=="div" || n=="p" || n=="dl" || n=="dd" || n=="center";
|
|
}
|
|
|
|
function isStrongTag(n) {
|
|
return n == "strong" || n == "b";
|
|
}
|
|
|
|
function isEmTag(n) {
|
|
return n == "em" || n == "i" || n == "u";
|
|
}
|
|
|
|
function isAnchor(n) {
|
|
return n == "a";
|
|
}
|
|
|
|
function isIgnoredEndTag(n) {
|
|
return n=="en-note" || n=="en-todo" || n=="span" || n=="body" || n=="html" || n=="font" || n=="br" || n=='hr' || n=='s' || n == 'tbody';
|
|
}
|
|
|
|
function isListTag(n) {
|
|
return n == "ol" || n == "ul";
|
|
}
|
|
|
|
// Elements that don't require any special treatment beside adding a newline character
|
|
function isNewLineOnlyEndTag(n) {
|
|
return n=="div" || n=="p" || n=="li" || n=="h1" || n=="h2" || n=="h3" || n=="h4" || n=="h5" || n=="dl" || n=="dd" || n=="center";
|
|
}
|
|
|
|
function isCodeTag(n) {
|
|
return n == "pre" || n == "code";
|
|
}
|
|
|
|
function isNewLineBlock(s) {
|
|
return s == BLOCK_OPEN || s == BLOCK_CLOSE;
|
|
}
|
|
|
|
function xmlNodeText(xmlNode) {
|
|
if (!xmlNode || !xmlNode.length) return '';
|
|
return xmlNode[0];
|
|
}
|
|
|
|
function enexXmlToMdArray(stream, resources) {
|
|
resources = resources.slice();
|
|
|
|
return new Promise((resolve, reject) => {
|
|
let state = {
|
|
inCode: false,
|
|
lists: [],
|
|
anchorAttributes: [],
|
|
};
|
|
|
|
let options = {};
|
|
let strict = true;
|
|
var saxStream = require('sax').createStream(strict, options)
|
|
|
|
let section = {
|
|
type: 'text',
|
|
lines: [],
|
|
parent: null,
|
|
};
|
|
|
|
saxStream.on('error', function(e) {
|
|
reject(e);
|
|
})
|
|
|
|
saxStream.on('text', function(text) {
|
|
section.lines = collapseWhiteSpaceAndAppend(section.lines, state, text);
|
|
})
|
|
|
|
saxStream.on('opentag', function(node) {
|
|
let n = node.name.toLowerCase();
|
|
if (n == 'en-note') {
|
|
// Start of note
|
|
} else if (isBlockTag(n)) {
|
|
section.lines.push(BLOCK_OPEN);
|
|
} else if (n == 'table') {
|
|
let newSection = {
|
|
type: 'table',
|
|
lines: [],
|
|
parent: section,
|
|
};
|
|
section.lines.push(newSection);
|
|
section = newSection;
|
|
} else if (n == 'tbody') {
|
|
// Ignore it
|
|
} else if (n == 'tr') {
|
|
if (section.type != 'table') throw new Error('Found a <tr> tag outside of a table');
|
|
|
|
let newSection = {
|
|
type: 'tr',
|
|
lines: [],
|
|
parent: section,
|
|
isHeader: false,
|
|
}
|
|
|
|
section.lines.push(newSection);
|
|
section = newSection;
|
|
} else if (n == 'td' || n == 'th') {
|
|
if (section.type != 'tr') throw new Error('Found a <td> tag outside of a <tr>');
|
|
|
|
if (n == 'th') section.isHeader = true;
|
|
|
|
let newSection = {
|
|
type: 'td',
|
|
lines: [],
|
|
parent: section,
|
|
};
|
|
|
|
section.lines.push(newSection);
|
|
section = newSection;
|
|
} else if (isListTag(n)) {
|
|
section.lines.push(BLOCK_OPEN);
|
|
state.lists.push({ tag: n, counter: 1 });
|
|
} else if (n == 'li') {
|
|
section.lines.push(BLOCK_OPEN);
|
|
if (!state.lists.length) {
|
|
reject("Found <li> tag without being inside a list"); // TODO: could be a warning, but nothing to handle warnings at the moment
|
|
return;
|
|
}
|
|
|
|
let container = state.lists[state.lists.length - 1];
|
|
if (container.tag == "ul") {
|
|
section.lines.push("- ");
|
|
} else {
|
|
section.lines.push(container.counter + '. ');
|
|
container.counter++;
|
|
}
|
|
} else if (isStrongTag(n)) {
|
|
section.lines.push("**");
|
|
} else if (n == 's') {
|
|
// Not supported
|
|
} else if (isAnchor(n)) {
|
|
state.anchorAttributes.push(node.attributes);
|
|
section.lines.push('[');
|
|
} else if (isEmTag(n)) {
|
|
section.lines.push("*");
|
|
} else if (n == "en-todo") {
|
|
let x = node.attributes && node.attributes.checked && node.attributes.checked.toLowerCase() == 'true' ? 'X' : ' ';
|
|
section.lines.push('- [' + x + '] ');
|
|
} else if (n == "hr") {
|
|
// Needs to be surrounded by new lines so that it's properly rendered as a line when converting to HTML
|
|
section.lines.push(NEWLINE);
|
|
section.lines.push('----------------------------------------');
|
|
section.lines.push(NEWLINE);
|
|
section.lines.push(NEWLINE);
|
|
} else if (n == "h1") {
|
|
section.lines.push(BLOCK_OPEN); section.lines.push("# ");
|
|
} else if (n == "h2") {
|
|
section.lines.push(BLOCK_OPEN); section.lines.push("## ");
|
|
} else if (n == "h3") {
|
|
section.lines.push(BLOCK_OPEN); section.lines.push("### ");
|
|
} else if (n == "h4") {
|
|
section.lines.push(BLOCK_OPEN); section.lines.push("#### ");
|
|
} else if (n == "h5") {
|
|
section.lines.push(BLOCK_OPEN); section.lines.push("##### ");
|
|
} else if (n == "h6") {
|
|
section.lines.push(BLOCK_OPEN); section.lines.push("###### ");
|
|
} else if (isCodeTag(n)) {
|
|
section.lines.push(BLOCK_OPEN);
|
|
state.inCode = true;
|
|
} else if (n == "br") {
|
|
section.lines.push(NEWLINE);
|
|
} else if (n == "en-media") {
|
|
const hash = node.attributes.hash;
|
|
|
|
let resource = null;
|
|
for (let i = 0; i < resources.length; i++) {
|
|
let r = resources[i];
|
|
if (r.id == hash) {
|
|
resource = r;
|
|
resources.splice(i, 1);
|
|
break;
|
|
}
|
|
}
|
|
|
|
if (!resource) {
|
|
// This is a bit of a hack. Notes sometime have resources attached to it, but those <resource> tags don't contain
|
|
// an "objID" tag, making it impossible to reference the resource. However, in this case the content of the note
|
|
// will contain a corresponding <en-media/> tag, which has the ID in the "hash" attribute. All this information
|
|
// has been collected above so we now set the resource ID to the hash attribute of the en-media tags. Here's an
|
|
// example of note that shows this problem:
|
|
|
|
// <?xml version="1.0" encoding="UTF-8"?>
|
|
// <!DOCTYPE en-export SYSTEM "http://xml.evernote.com/pub/evernote-export2.dtd">
|
|
// <en-export export-date="20161221T203133Z" application="Evernote/Windows" version="6.x">
|
|
// <note>
|
|
// <title>Commande</title>
|
|
// <content>
|
|
// <![CDATA[
|
|
// <?xml version="1.0" encoding="UTF-8"?>
|
|
// <!DOCTYPE en-note SYSTEM "http://xml.evernote.com/pub/enml2.dtd">
|
|
// <en-note>
|
|
// <en-media alt="your QR code" hash="216a16a1bbe007fba4ccf60b118b4ccc" type="image/png"></en-media>
|
|
// </en-note>
|
|
// ]]>
|
|
// </content>
|
|
// <created>20160921T203424Z</created>
|
|
// <updated>20160921T203438Z</updated>
|
|
// <note-attributes>
|
|
// <reminder-order>20160902T140445Z</reminder-order>
|
|
// <reminder-done-time>20160924T101120Z</reminder-done-time>
|
|
// </note-attributes>
|
|
// <resource>
|
|
// <data encoding="base64">........</data>
|
|
// <mime>image/png</mime>
|
|
// <width>150</width>
|
|
// <height>150</height>
|
|
// </resource>
|
|
// </note>
|
|
// </en-export>
|
|
|
|
let found = false;
|
|
for (let i = 0; i < resources.length; i++) {
|
|
let r = resources[i];
|
|
if (!r.id) {
|
|
r.id = hash;
|
|
resources[i] = r;
|
|
found = true;
|
|
break;
|
|
}
|
|
}
|
|
|
|
if (!found) {
|
|
console.warn('Hash with no associated resource: ' + hash);
|
|
}
|
|
} else {
|
|
// If the resource does not appear among the note's resources, it
|
|
// means it's an attachement. It will be appended along with the
|
|
// other remaining resources at the bottom of the markdown text.
|
|
if (!!resource.id) {
|
|
section.lines = addResourceTag(section.lines, resource, node.attributes.alt);
|
|
}
|
|
}
|
|
} else if (n == "span" || n == "font") {
|
|
// Ignore
|
|
} else {
|
|
console.warn("Unsupported start tag: " + n);
|
|
}
|
|
})
|
|
|
|
saxStream.on('closetag', function(n) {
|
|
if (n == 'en-note') {
|
|
// End of note
|
|
} else if (isNewLineOnlyEndTag(n)) {
|
|
section.lines.push(BLOCK_CLOSE);
|
|
} else if (n == 'td' || n == 'th') {
|
|
section = section.parent;
|
|
} else if (n == 'tr') {
|
|
section = section.parent;
|
|
} else if (n == 'table') {
|
|
section = section.parent;
|
|
} else if (isIgnoredEndTag(n)) {
|
|
// Skip
|
|
} else if (isListTag(n)) {
|
|
section.lines.push(BLOCK_CLOSE);
|
|
state.lists.pop();
|
|
} else if (isStrongTag(n)) {
|
|
section.lines.push("**");
|
|
} else if (isEmTag(n)) {
|
|
section.lines.push("*");
|
|
} else if (isCodeTag(n)) {
|
|
state.inCode = false;
|
|
section.lines.push(BLOCK_CLOSE);
|
|
} else if (isAnchor(n)) {
|
|
let attributes = state.anchorAttributes.pop();
|
|
let url = attributes && attributes.href ? attributes.href : '';
|
|
|
|
if (section.lines.length < 1) throw new Error('Invalid anchor tag closing'); // Sanity check, but normally not possible
|
|
|
|
// When closing the anchor tag, check if there's is any text content. If not
|
|
// put the URL as is (don't wrap it in [](url)). The markdown parser, using
|
|
// GitHub flavour, will turn this URL into a link. This is to generate slightly
|
|
// cleaner markdown.
|
|
let previous = section.lines[section.lines.length - 1];
|
|
if (previous == '[') {
|
|
section.lines.pop();
|
|
section.lines.push(url);
|
|
} else if (!previous || previous == url) {
|
|
section.lines.pop();
|
|
section.lines.pop();
|
|
section.lines.push(url);
|
|
} else {
|
|
section.lines.push('](' + url + ')');
|
|
}
|
|
} else if (isListTag(n)) {
|
|
section.lines.push(BLOCK_CLOSE);
|
|
state.lists.pop();
|
|
} else if (n == "en-media") {
|
|
// Skip
|
|
} else if (isIgnoredEndTag(n)) {
|
|
// Skip
|
|
} else {
|
|
console.warn("Unsupported end tag: " + n);
|
|
}
|
|
|
|
})
|
|
|
|
saxStream.on('attribute', function(attr) {
|
|
|
|
})
|
|
|
|
saxStream.on('end', function() {
|
|
resolve({
|
|
content: section,
|
|
resources: resources,
|
|
});
|
|
})
|
|
|
|
stream.pipe(saxStream);
|
|
});
|
|
}
|
|
|
|
function setTableCellContent(table) {
|
|
if (!table.type == 'table') throw new Error('Only for tables');
|
|
|
|
for (let trIndex = 0; trIndex < table.lines.length; trIndex++) {
|
|
const tr = table.lines[trIndex];
|
|
for (let tdIndex = 0; tdIndex < tr.lines.length; tdIndex++) {
|
|
let td = tr.lines[tdIndex];
|
|
td.content = processMdArrayNewLines(td.lines);
|
|
td.content = td.content.replace(/\n\n\n\n\n/g, ' ');
|
|
td.content = td.content.replace(/\n\n\n\n/g, ' ');
|
|
td.content = td.content.replace(/\n\n\n/g, ' ');
|
|
td.content = td.content.replace(/\n\n/g, ' ');
|
|
td.content = td.content.replace(/\n/g, ' ');
|
|
}
|
|
}
|
|
|
|
return table;
|
|
}
|
|
|
|
function cellWidth(cellText) {
|
|
const lines = cellText.split("\n");
|
|
let maxWidth = 0;
|
|
for (let i = 0; i < lines.length; i++) {
|
|
const line = lines[i];
|
|
if (line.length > maxWidth) maxWidth = line.length;
|
|
}
|
|
return maxWidth;
|
|
}
|
|
|
|
function colWidths(table) {
|
|
let output = [];
|
|
for (let trIndex = 0; trIndex < table.lines.length; trIndex++) {
|
|
const tr = table.lines[trIndex];
|
|
for (let tdIndex = 0; tdIndex < tr.lines.length; tdIndex++) {
|
|
const td = tr.lines[tdIndex];
|
|
const w = cellWidth(td.content);
|
|
if (output.length <= tdIndex) output.push(0);
|
|
if (w > output[tdIndex]) output[tdIndex] = w;
|
|
}
|
|
}
|
|
return output;
|
|
}
|
|
|
|
function drawTable(table, colWidths) {
|
|
// | First Header | Second Header |
|
|
// | ------------- | ------------- |
|
|
// | Content Cell | Content Cell |
|
|
// | Content Cell | Content Cell |
|
|
|
|
// There must be at least 3 dashes separating each header cell.
|
|
// https://gist.github.com/IanWang/28965e13cdafdef4e11dc91f578d160d#tables
|
|
const minColWidth = 3;
|
|
let lines = [];
|
|
let headerDone = false;
|
|
for (let trIndex = 0; trIndex < table.lines.length; trIndex++) {
|
|
const tr = table.lines[trIndex];
|
|
const isHeader = tr.isHeader;
|
|
let line = [];
|
|
let headerLine = [];
|
|
let emptyHeader = null;
|
|
for (let tdIndex = 0; tdIndex < colWidths.length; tdIndex++) {
|
|
const width = Math.max(minColWidth, colWidths[tdIndex]);
|
|
const cell = tr.lines[tdIndex] ? tr.lines[tdIndex].content : '';
|
|
line.push(stringPadding(cell, width, ' ', stringPadding.RIGHT));
|
|
|
|
if (!headerDone) {
|
|
if (!isHeader) {
|
|
if (!emptyHeader) emptyHeader = [];
|
|
let h = stringPadding(' ', width, ' ', stringPadding.RIGHT);
|
|
if (!width) h = '';
|
|
emptyHeader.push(h);
|
|
}
|
|
headerLine.push('-'.repeat(width));
|
|
}
|
|
}
|
|
|
|
if (emptyHeader) {
|
|
lines.push('| ' + emptyHeader.join(' | ') + ' |');
|
|
lines.push('| ' + headerLine.join(' | ') + ' |');
|
|
headerDone = true;
|
|
}
|
|
|
|
lines.push('| ' + line.join(' | ') + ' |');
|
|
|
|
if (!headerDone) {
|
|
lines.push('| ' + headerLine.join(' | ') + ' |');
|
|
headerDone = true;
|
|
}
|
|
}
|
|
|
|
return lines.join('<<<<:D>>>>' + NEWLINE + '<<<<:D>>>>').split('<<<<:D>>>>');
|
|
}
|
|
|
|
async function enexXmlToMd(stream, resources) {
|
|
let result = await enexXmlToMdArray(stream, resources);
|
|
|
|
let mdLines = [];
|
|
|
|
for (let i = 0; i < result.content.lines.length; i++) {
|
|
let line = result.content.lines[i];
|
|
if (typeof line === 'object') { // A table
|
|
let table = setTableCellContent(line);
|
|
//console.log(require('util').inspect(table, false, null))
|
|
const cw = colWidths(table);
|
|
const tableLines = drawTable(table, cw);
|
|
mdLines.push(BLOCK_OPEN);
|
|
mdLines = mdLines.concat(tableLines);
|
|
mdLines.push(BLOCK_CLOSE);
|
|
} else { // an actual line
|
|
mdLines.push(line);
|
|
}
|
|
}
|
|
|
|
let firstAttachment = true;
|
|
for (let i = 0; i < result.resources.length; i++) {
|
|
let r = result.resources[i];
|
|
if (firstAttachment) mdLines.push(NEWLINE);
|
|
mdLines.push(NEWLINE);
|
|
mdLines = addResourceTag(mdLines, r, r.filename);
|
|
firstAttachment = false;
|
|
}
|
|
|
|
return processMdArrayNewLines(mdLines);
|
|
}
|
|
|
|
export { enexXmlToMd, processMdArrayNewLines, NEWLINE, addResourceTag }; |