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beautify exporthtml

pull/85/merge
Peter 'Pita' Martischka 2011-08-10 17:31:20 +01:00
parent 33ec98dd35
commit dc10985ba3
1 changed files with 223 additions and 144 deletions
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367
node/utils/ExportHtml.js
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@ -13,27 +13,30 @@
* See the License for the specific language governing permissions and
* limitations under the License.
*/
var async = require("async");
var Changeset = require("./Changeset");
var padManager = require("../db/PadManager");
function getPadPlainText(pad, revNum) {
var atext = ((revNum !== undefined) ? pad.getInternalRevisionAText(revNum) :
pad.atext());
var textLines = atext.text.slice(0,-1).split('\n');
function getPadPlainText(pad, revNum)
{
var atext = ((revNum !== undefined) ? pad.getInternalRevisionAText(revNum) : pad.atext());
var textLines = atext.text.slice(0, -1).split('\n');
var attribLines = Changeset.splitAttributionLines(atext.attribs, atext.text);
var apool = pad.pool();
var pieces = [];
for(var i=0;i<textLines.length;i++) {
for (var i = 0; i < textLines.length; i++)
{
var line = _analyzeLine(textLines[i], attribLines[i], apool);
if (line.listLevel) {
var numSpaces = line.listLevel*2-1;
if (line.listLevel)
{
var numSpaces = line.listLevel * 2 - 1;
var bullet = '*';
pieces.push(new Array(numSpaces+1).join(' '), bullet, ' ', line.text, '\n');
pieces.push(new Array(numSpaces + 1).join(' '), bullet, ' ', line.text, '\n');
}
else {
else
{
pieces.push(line.text, '\n');
}
}
@ -41,52 +44,68 @@ function getPadPlainText(pad, revNum) {
return pieces.join('');
}
function getPadHTML(pad, revNum, callback) {
function getPadHTML(pad, revNum, callback)
{
var atext = pad.atext;
var html;
async.waterfall([
// fetch revision atext
function (callback) {
if (revNum != undefined) {
pad.getInternalRevisionAText(revNum, function (err, revisionAtext) {
atext = revisionAtext;
callback(err);
});
} else {
callback(null);
}
},
// convert atext to html
function (callback) {
html = getHTMLFromAtext(pad, atext);
// fetch revision atext
function (callback)
{
if (revNum != undefined)
{
pad.getInternalRevisionAText(revNum, function (err, revisionAtext)
{
atext = revisionAtext;
callback(err);
});
}
else
{
callback(null);
}
],
// run final callback
function (err) {
callback(err, html);
}
);
},
// convert atext to html
function (callback)
{
html = getHTMLFromAtext(pad, atext);
callback(null);
}],
// run final callback
function (err)
{
callback(err, html);
});
}
function getHTMLFromAtext(pad, atext) {
function getHTMLFromAtext(pad, atext)
{
var apool = pad.apool();
var textLines = atext.text.slice(0,-1).split('\n');
var textLines = atext.text.slice(0, -1).split('\n');
var attribLines = Changeset.splitAttributionLines(atext.attribs, atext.text);
var tags = ['h1', 'h2', 'strong','em','u','s'];
var props = ['heading1', 'heading2', 'bold','italic','underline','strikethrough'];
var tags = ['h1', 'h2', 'strong', 'em', 'u', 's'];
var props = ['heading1', 'heading2', 'bold', 'italic', 'underline', 'strikethrough'];
var anumMap = {};
props.forEach(function(propName, i) {
var propTrueNum = apool.putAttrib([propName,true], true);
if (propTrueNum >= 0) {
props.forEach(function (propName, i)
{
var propTrueNum = apool.putAttrib([propName, true], true);
if (propTrueNum >= 0)
{
anumMap[propTrueNum] = i;
}
});
function getLineHTML(text, attribs) {
function getLineHTML(text, attribs)
{
var propVals = [false, false, false];
var ENTER = 1;
var STAY = 2;
@ -97,16 +116,18 @@ function getHTMLFromAtext(pad, atext) {
// <b>Just bold<b> <b><i>Bold and italics</i></b> <i>Just italics</i>
// becomes
// <b>Just bold <i>Bold and italics</i></b> <i>Just italics</i>
var taker = Changeset.stringIterator(text);
var assem = Changeset.stringAssembler();
function emitOpenTag(i) {
function emitOpenTag(i)
{
assem.append('<');
assem.append(tags[i]);
assem.append('>');
}
function emitCloseTag(i) {
function emitCloseTag(i)
{
assem.append('</');
assem.append(tags[i]);
assem.append('>');
@ -115,101 +136,123 @@ function getHTMLFromAtext(pad, atext) {
var urls = _findURLs(text);
var idx = 0;
function processNextChars(numChars) {
if (numChars <= 0) {
function processNextChars(numChars)
{
if (numChars <= 0)
{
return;
}
var iter = Changeset.opIterator(Changeset.subattribution(attribs,
idx, idx+numChars));
var iter = Changeset.opIterator(Changeset.subattribution(attribs, idx, idx + numChars));
idx += numChars;
while (iter.hasNext()) {
while (iter.hasNext())
{
var o = iter.next();
var propChanged = false;
Changeset.eachAttribNumber(o.attribs, function(a) {
if (a in anumMap) {
Changeset.eachAttribNumber(o.attribs, function (a)
{
if (a in anumMap)
{
var i = anumMap[a]; // i = 0 => bold, etc.
if (! propVals[i]) {
if (!propVals[i])
{
propVals[i] = ENTER;
propChanged = true;
}
else {
else
{
propVals[i] = STAY;
}
}
});
for(var i=0;i<propVals.length;i++) {
if (propVals[i] === true) {
for (var i = 0; i < propVals.length; i++)
{
if (propVals[i] === true)
{
propVals[i] = LEAVE;
propChanged = true;
}
else if (propVals[i] === STAY) {
else if (propVals[i] === STAY)
{
propVals[i] = true; // set it back
}
}
// now each member of propVal is in {false,LEAVE,ENTER,true}
// according to what happens at start of span
if (propChanged) {
if (propChanged)
{
// leaving bold (e.g.) also leaves italics, etc.
var left = false;
for(var i=0;i<propVals.length;i++) {
for (var i = 0; i < propVals.length; i++)
{
var v = propVals[i];
if (! left) {
if (v === LEAVE) {
if (!left)
{
if (v === LEAVE)
{
left = true;
}
}
else {
if (v === true) {
else
{
if (v === true)
{
propVals[i] = STAY; // tag will be closed and re-opened
}
}
}
for(var i=propVals.length-1; i>=0; i--) {
if (propVals[i] === LEAVE) {
for (var i = propVals.length - 1; i >= 0; i--)
{
if (propVals[i] === LEAVE)
{
emitCloseTag(i);
propVals[i] = false;
}
else if (propVals[i] === STAY) {
else if (propVals[i] === STAY)
{
emitCloseTag(i);
}
}
for(var i=0; i<propVals.length; i++) {
if (propVals[i] === ENTER || propVals[i] === STAY) {
for (var i = 0; i < propVals.length; i++)
{
if (propVals[i] === ENTER || propVals[i] === STAY)
{
emitOpenTag(i);
propVals[i] = true;
}
}
// propVals is now all {true,false} again
} // end if (propChanged)
var chars = o.chars;
if (o.lines) {
if (o.lines)
{
chars--; // exclude newline at end of line, if present
}
var s = taker.take(chars);
assem.append(_escapeHTML(s));
} // end iteration over spans in line
for(var i=propVals.length-1; i>=0; i--) {
if (propVals[i]) {
for (var i = propVals.length - 1; i >= 0; i--)
{
if (propVals[i])
{
emitCloseTag(i);
propVals[i] = false;
}
}
} // end processNextChars
if (urls) {
urls.forEach(function(urlData) {
if (urls)
{
urls.forEach(function (urlData)
{
var startIndex = urlData[0];
var url = urlData[1];
var urlLength = url.length;
processNextChars(startIndex - idx);
assem.append('<a href="'+url.replace(/\"/g, '&quot;')+'">');
assem.append('<a href="' + url.replace(/\"/g, '&quot;') + '">');
processNextChars(urlLength);
assem.append('</a>');
});
@ -218,7 +261,6 @@ function getHTMLFromAtext(pad, atext) {
return _processSpaces(assem.toString());
} // end getLineHTML
var pieces = [];
// Need to deal with constraints imposed on HTML lists; can
@ -228,79 +270,98 @@ function getHTMLFromAtext(pad, atext) {
// so we want to do something reasonable there. We also
// want to deal gracefully with blank lines.
var lists = []; // e.g. [[1,'bullet'], [3,'bullet'], ...]
for(var i=0;i<textLines.length;i++) {
for (var i = 0; i < textLines.length; i++)
{
var line = _analyzeLine(textLines[i], attribLines[i], apool);
var lineContent = getLineHTML(line.text, line.aline);
if (line.listLevel || lists.length > 0) {
if (line.listLevel || lists.length > 0)
{
// do list stuff
var whichList = -1; // index into lists or -1
if (line.listLevel) {
if (line.listLevel)
{
whichList = lists.length;
for(var j=lists.length-1;j>=0;j--) {
if (line.listLevel <= lists[j][0]) {
for (var j = lists.length - 1; j >= 0; j--)
{
if (line.listLevel <= lists[j][0])
{
whichList = j;
}
}
}
if (whichList >= lists.length) {
if (whichList >= lists.length)
{
lists.push([line.listLevel, line.listTypeName]);
pieces.push('<ul><li>', lineContent || '<br>');
}
else if (whichList == -1) {
if (line.text) {
else if (whichList == -1)
{
if (line.text)
{
// non-blank line, end all lists
pieces.push(new Array(lists.length+1).join('</li></ul\n>'));
pieces.push(new Array(lists.length + 1).join('</li></ul\n>'));
lists.length = 0;
pieces.push(lineContent, '<br>');
}
else {
else
{
pieces.push('<br><br>');
}
}
else {
while (whichList < lists.length-1) {
else
{
while (whichList < lists.length - 1)
{
pieces.push('</li></ul>');
lists.length--;
}
pieces.push('</li><li>', lineContent || '<br>');
}
}
else {
else
{
pieces.push(lineContent, '<br>');
}
}
pieces.push(new Array(lists.length+1).join('</li></ul>'));
pieces.push(new Array(lists.length + 1).join('</li></ul>'));
return pieces.join('');
}
function _analyzeLine(text, aline, apool) {
function _analyzeLine(text, aline, apool)
{
var line = {};
// identify list
var lineMarker = 0;
line.listLevel = 0;
if (aline) {
if (aline)
{
var opIter = Changeset.opIterator(aline);
if (opIter.hasNext()) {
if (opIter.hasNext())
{
var listType = Changeset.opAttributeValue(opIter.next(), 'list', apool);
if (listType) {
if (listType)
{
lineMarker = 1;
listType = /([a-z]+)([12345678])/.exec(listType);
if (listType) {
if (listType)
{
line.listTypeName = listType[1];
line.listLevel = Number(listType[2]);
}
}
}
}
if (lineMarker) {
if (lineMarker)
{
line.text = text.substring(1);
line.aline = Changeset.subattribution(aline, 1);
}
else {
else
{
line.text = text;
line.aline = aline;
}
@ -308,37 +369,32 @@ function _analyzeLine(text, aline, apool) {
return line;
}
exports.getPadHTMLDocument = function(padId, revNum, noDocType, callback) {
padManager.getPad(padId, function(err, pad)
exports.getPadHTMLDocument = function (padId, revNum, noDocType, callback)
{
padManager.getPad(padId, function (err, pad)
{
if(err)
if (err)
{
callback(err);
return;
}
var head = (noDocType?'':'<!doctype html>\n')+
'<html lang="en">\n'+
(noDocType?'':
'<head>\n'+
'<meta charset="utf-8">\n'+
'<style> * { font-family: arial, sans-serif;\n'+
'font-size: 13px;\n'+
'line-height: 17px; }</style>\n' +
'</head>\n')+
'<body>';
var head = (noDocType ? '' : '<!doctype html>\n') + '<html lang="en">\n' + (noDocType ? '' : '<head>\n' + '<meta charset="utf-8">\n' + '<style> * { font-family: arial, sans-serif;\n' + 'font-size: 13px;\n' + 'line-height: 17px; }</style>\n' + '</head>\n') + '<body>';
var foot = '</body>\n</html>\n';
getPadHTML(pad, revNum, function (err, html) {
getPadHTML(pad, revNum, function (err, html)
{
callback(err, head + html + foot);
});
});
}
function _escapeHTML(s) {
function _escapeHTML(s)
{
var re = /[&<>]/g;
if (! re.MAP) {
if (!re.MAP)
{
// persisted across function calls!
re.MAP = {
'&': '&amp;',
@ -346,53 +402,72 @@ function _escapeHTML(s) {
'>': '&gt;',
};
}
return s.replace(re, function(c) { return re.MAP[c]; });
return s.replace(re, function (c)
{
return re.MAP[c];
});
}
// copied from ACE
function _processSpaces(s) {
function _processSpaces(s)
{
var doesWrap = true;
if (s.indexOf("<") < 0 && ! doesWrap) {
if (s.indexOf("<") < 0 && !doesWrap)
{
// short-cut
return s.replace(/ /g, '&nbsp;');
}
var parts = [];
s.replace(/<[^>]*>?| |[^ <]+/g, function(m) { parts.push(m); });
if (doesWrap) {
s.replace(/<[^>]*>?| |[^ <]+/g, function (m)
{
parts.push(m);
});
if (doesWrap)
{
var endOfLine = true;
var beforeSpace = false;
// last space in a run is normal, others are nbsp,
// end of line is nbsp
for(var i=parts.length-1;i>=0;i--) {
for (var i = parts.length - 1; i >= 0; i--)
{
var p = parts[i];
if (p == " ") {
if (endOfLine || beforeSpace)
parts[i] = '&nbsp;';
endOfLine = false;
beforeSpace = true;
if (p == " ")
{
if (endOfLine || beforeSpace) parts[i] = '&nbsp;';
endOfLine = false;
beforeSpace = true;
}
else if (p.charAt(0) != "<") {
endOfLine = false;
beforeSpace = false;
else if (p.charAt(0) != "<")
{
endOfLine = false;
beforeSpace = false;
}
}
// beginning of line is nbsp
for(var i=0;i<parts.length;i++) {
for (var i = 0; i < parts.length; i++)
{
var p = parts[i];
if (p == " ") {
parts[i] = '&nbsp;';
break;
if (p == " ")
{
parts[i] = '&nbsp;';
break;
}
else if (p.charAt(0) != "<") {
break;
else if (p.charAt(0) != "<")
{
break;
}
}
}
else {
for(var i=0;i<parts.length;i++) {
else
{
for (var i = 0; i < parts.length; i++)
{
var p = parts[i];
if (p == " ") {
parts[i] = '&nbsp;';
if (p == " ")
{
parts[i] = '&nbsp;';
}
}
}
@ -403,15 +478,19 @@ function _processSpaces(s) {
// copied from ACE
var _REGEX_WORDCHAR = /[\u0030-\u0039\u0041-\u005A\u0061-\u007A\u00C0-\u00D6\u00D8-\u00F6\u00F8-\u00FF\u0100-\u1FFF\u3040-\u9FFF\uF900-\uFDFF\uFE70-\uFEFE\uFF10-\uFF19\uFF21-\uFF3A\uFF41-\uFF5A\uFF66-\uFFDC]/;
var _REGEX_SPACE = /\s/;
var _REGEX_URLCHAR = new RegExp('('+/[-:@a-zA-Z0-9_.,~%+\/\\?=&#;()$]/.source+'|'+_REGEX_WORDCHAR.source+')');
var _REGEX_URL = new RegExp(/(?:(?:https?|s?ftp|ftps|file|smb|afp|nfs|(x-)?man|gopher|txmt):\/\/|mailto:)/.source+_REGEX_URLCHAR.source+'*(?![:.,;])'+_REGEX_URLCHAR.source, 'g');
var _REGEX_URLCHAR = new RegExp('(' + /[-:@a-zA-Z0-9_.,~%+\/\\?=&#;()$]/.source + '|' + _REGEX_WORDCHAR.source + ')');
var _REGEX_URL = new RegExp(/(?:(?:https?|s?ftp|ftps|file|smb|afp|nfs|(x-)?man|gopher|txmt):\/\/|mailto:)/.source + _REGEX_URLCHAR.source + '*(?![:.,;])' + _REGEX_URLCHAR.source, 'g');
// returns null if no URLs, or [[startIndex1, url1], [startIndex2, url2], ...]
function _findURLs(text) {
function _findURLs(text)
{
_REGEX_URL.lastIndex = 0;
var urls = null;
var execResult;
while ((execResult = _REGEX_URL.exec(text))) {
while ((execResult = _REGEX_URL.exec(text)))
{
urls = (urls || []);
var startIndex = execResult.index;
var url = execResult[0];