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/*********************************************************************************
NixNote - An open-source client for the Evernote service.
Copyright (C) 2013 Randy Baumgarte
This program is free software; you can redistribute it and/or
modify it under the terms of the GNU General Public License
as published by the Free Software Foundation; either version 2
of the License, or (at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
***********************************************************************************/
#include "noteformatter.h"
#include "sql/resourcetable.h"
#include "sql/notebooktable.h"
#include "sql/sharednotebooktable.h"
#include "sql/linkednotebooktable.h"
#include "global.h"
#include "filters/filtercriteria.h"
#include "filters/filterengine.h"
#include "utilities/mimereference.h"
#include <QFileSystemModel>
#include <QFileIconProvider>
#if QT_VERSION < 0x050000
#include <poppler-qt4.h>
#else
#include <poppler-qt5.h>
#endif
#include <QIcon>
#include <QList>
#include <iostream>
using namespace std;
extern Global global;
/* Constructor. */
NoteFormatter::NoteFormatter(QObject *parent) :
QObject(parent)
{
thumbnail = false;
this->setNoteHistory(false);
this->noteHistory = false;
this->pdfPreview = true;
this->readOnly = false;
this->formatError = false;
this->inkNote = false;
this->resourceError = false;
this->resourceHighlight = false;
}
/*
Set the note we are currently formatting. The pdfPreview
is an indication if we should generate a picture for the
attachment rather than doing it as an attachment.
*/
void NoteFormatter::setNote(Note n, bool pdfPreview) {
this->pdfPreview = pdfPreview;
this->note = n;
content = "";
//this->enableHighlight = true;
readOnly = false;
inkNote = false;
NoteAttributes attributes;
if (note.attributes.isSet()) {
attributes = note.attributes;
QString contentClass;
if (attributes.contentClass.isSet())
contentClass = attributes.contentClass;
if (contentClass != "") {
QLOG_DEBUG() << "Content class not empty. Setting read-only.";
readOnly = true;
}
}
}
/* Return the formatted content */
QString NoteFormatter::getPage() {
return this->content;
}
/* If we have search criteria, then we highlight the text matching
those results in the note. */
//void NoteFormatter::setHighlight() {
// FilterCriteria *criteria = global.filterCriteria[global.filterPosition];
// if (criteria->isSearchStringSet())
// enableHighlight = true;
// else
// enableHighlight = false;
//}
/* If we are here because we are viewing note history, then we
set the flag here. Note history is almost the same as a regular
note, but there are some differences. */
void NoteFormatter::setNoteHistory(bool value) {
this->noteHistory = value;
}
/* Take the ENML note and transform it into HTML that WebKit will
not complain about */
QByteArray NoteFormatter::rebuildNoteHTML() {
QLOG_TRACE() << "Rebuilding HTML";
formatError = false;
readOnly = false;
ResourceTable resTable(global.db);
if (!note.guid.isSet()) {
formatError=true;
readOnly=true;
QLOG_TRACE() << "NOTE GUID IS NOT SET!!!";
} else {
QLOG_TRACE() << "getting resource from hash";
resTable.getResourceMap(hashMap, resourceMap, note.guid);
}
QWebPage page;
QEventLoop loop;
QLOG_TRACE() << "Before preHTMLFormat";
QString html = "<body></body>";
if (note.content.isSet())
html = preHtmlFormat(note.content);
html.replace("<en-note", "<body");
html.replace("</en-note>", "</body>");
QByteArray htmlPage;
htmlPage.append(html);
QLOG_TRACE() << "About to set content";
page.mainFrame()->setContent(htmlPage);
QObject::connect(&page, SIGNAL(loadFinished(bool)), &loop, SLOT(quit()));
QLOG_TRACE() << "Starting to modify tags";
modifyTags(page);
QLOG_TRACE() << "Done modifying tags";
note.content = page.mainFrame()->toHtml();
content.clear();
content.append(note.content);
qint32 index = content.indexOf("<body");
content.remove(0,index);
content.prepend("<style>img { height:auto; width:auto; max-height:auto; max-width:100%; }</style>");
content.prepend("<head><meta http-equiv=\"content-type\" content=\"text-html; charset=utf-8\"></head>");
content.prepend("<html>");
content.append("</html>");
if (!formatError && !readOnly) {
NotebookTable ntable(global.db);
if (note.notebookGuid.isSet()) {
qint32 notebookLid = ntable.getLid(note.notebookGuid);
if (ntable.isReadOnly(notebookLid)) {
QLOG_DEBUG() << "Notebook is read-only. Marking note read-only.";
readOnly = true;
}
}
}
if (note.active.isSet() && !note.active) {
QLOG_DEBUG() << "Note is inactive. Setting to read-only.";
readOnly = true;
}
QLOG_TRACE() << "Done rebuiling HTML";
return content;
}
// This is to turn the <en-media/> tags into <en-media></en-media> tags because
// QWebPage tends to miss the /> tag and it can cause some text to be missed
QString NoteFormatter::preHtmlFormat(QString note) {
QLOG_TRACE_IN();
int pos;
// Correct <br></br> because Webkit messes it up.
QString content = note.replace("<br></br>", "<br/>");
pos = content.indexOf("<en-media");
while (pos != -1) {
int endPos = content.indexOf(">", pos);
int tagEndPos = content.indexOf("/>", pos);
// Check the next /> end tag. If it is before the end
// of the current tag or if it doesn't exist then we
// need to fix the end of the img
if (tagEndPos == -1 || tagEndPos < endPos) {
content = content.mid(0, endPos) + QByteArray("></en-media>") +content.mid(endPos+1);
}
pos = content.indexOf("<en-media", pos+1);
}
QLOG_TRACE_OUT();
return content;
}
/*
This will go through and modify some of the ENML tags and turn
them into HTML tags. Things like en-media & en-crypt have no
HTML values, so we turn them into HTML.
*/
void NoteFormatter::modifyTags(QWebPage &doc) {
QLOG_TRACE_IN();
tempFiles.clear();
// Modify en-media tags
QLOG_TRACE() << "Searching for all en-media tags;";
QWebElementCollection anchors = doc.mainFrame()->findAllElements("en-media");
QLOG_TRACE() << "Search complete: " << anchors.toList().size();
foreach (QWebElement enmedia, anchors) {
if (enmedia.hasAttribute("type")) {
QString attr = enmedia.attribute("type");
QString hash = enmedia.attribute("hash");
QStringList type = attr.split("/");
if (type.size() >= 2) {
QString appl = type[1];
QLOG_TRACE() << "En-Media tag type: " << type[0];
if (type[0] == "image")
modifyImageTags(enmedia, hash);
else
modifyApplicationTags(enmedia, hash, appl);
QLOG_TRACE() << "Type modified";
}
}
}
// Modify todo tags
anchors = doc.mainFrame()->findAllElements("en-todo");
qint32 enTodoCount = anchors.count();
for (qint32 i=enTodoCount-1; i>=0; i--) {
QWebElement enmedia = anchors.at(i);
modifyTodoTags(enmedia);
}
anchors = doc.mainFrame()->findAllElements("en-crypt");
qint32 enCryptLen = anchors.count();
for (qint32 i=enCryptLen-1; i>=0; i--) {
QWebElement enmedia = anchors.at(i);
QString hint = enmedia.attribute("hint");
QString cipher = enmedia.attribute("cipher", "RC2");
QString length = enmedia.attribute("length","64");
enmedia.setAttribute("contentEditable","false");
enmedia.setAttribute("src", QString("file://")+global.fileManager.getImageDirPath("encrypt.png"));
enmedia.setAttribute("en-tag","en-crypt");
enmedia.setAttribute("cipher", cipher);
enmedia.setAttribute("length", length);
enmedia.setAttribute("hint", hint);
enmedia.setAttribute("alt", enmedia.toInnerXml());
global.cryptCounter++;
enmedia.setAttribute("id", "crypt"+QString().number(global.cryptCounter));
QString encryptedText = enmedia.toInnerXml();
// If the encryption string contains crlf at the end, remove them because they mess up the javascript.
if (encryptedText.endsWith("\n"))
encryptedText.truncate(encryptedText.length()-1);
if (encryptedText.endsWith("\r"))
encryptedText.truncate(encryptedText.length()-1);
// Add the commands
hint = hint.replace("'","'");
enmedia.setAttribute("onClick", "window.browserWindow.decryptText('crypt"+
QString().number(global.cryptCounter)+
"', '"+encryptedText+"', '"+
hint +"', '" +
cipher+ "', " +
length +
");");
enmedia.setAttribute("onMouseOver", "style.cursor='hand'");
enmedia.setInnerXml("");
QString k = enmedia.toOuterXml();
k.replace("<en-crypt", "<img");
k.replace("img>", "<en-crypt");
enmedia.setOuterXml(k);
}
// Modify link tags
anchors = doc.mainFrame()->findAllElements("a");
enCryptLen = anchors.count();
for (qint32 i=0; i<anchors.count(); i++) {
QWebElement element = anchors.at(i);
if (!element.attribute("href").toLower().startsWith("http://latex.codecogs.com/gif.latex?")) {
element.setAttribute("title", element.attribute("href"));
} else {
QString formula = element.attribute("href").toLower().replace("http://latex.codecogs.com/gif.latex?","");
element.setAttribute("title", formula);
QString resLid = element.firstChild().attribute("lid","");
element.setAttribute("href", "latex:///"+resLid);
}
}
QLOG_TRACE_OUT();
}
/* This function works the same as the addHighlight, but instead of highlighting
text in a note, it highlights the text in an image. */
QString NoteFormatter::addImageHighlight(qint32 resLid, QString imgfile) {
QLOG_TRACE_IN();
if (highlightWords.size() == 0)
return "";
// Get the image resource recognition data. This tells where to highlight the image
ResourceTable resTable(global.db);
Resource recoResource;
resTable.getResourceRecognition(recoResource, resLid);
Data recognition;
if (recoResource.recognition.isSet())
recognition = recoResource.recognition;
if (!recognition.size.isSet() || !recognition.body.isSet() ||
recognition.size == 0) {
return "";
}
QString filename = global.fileManager.getTmpDirPath() + QString::number(resLid) + ".png";
// Now we have the recognition data. We need to go through it
QByteArray recoData;
if (recognition.body.isSet())
recoData = recognition.body;
QString xml(recoData);
// Create a transparent pixmap. The only non transparent piece is teh
// highlight that will be overlaid on the old image
imgfile = imgfile.replace("file:///", "");
QPixmap originalFile(imgfile);
QPixmap overlayPix(originalFile.size());
overlayPix.fill(Qt::transparent);
QPainter p2(&overlayPix);
p2.save();
p2.setBackgroundMode(Qt::TransparentMode);
p2.setRenderHint(QPainter::Antialiasing,true);
QColor yellow(Qt::yellow);
p2.setBrush(yellow);
// Now, we have the image. We need to go through all the recognition data to highlight
// what we've found.
QDomDocument doc;
doc.setContent(xml);
// Go through the "item" nodes
bool found=false;
QDomNodeList anchors = doc.elementsByTagName("item");
for (int i=0; i<anchors.length(); i++) {
QDomElement element = anchors.at(i).toElement();
int x = element.attribute("x").toInt();
int y = element.attribute("y").toInt();
int w = element.attribute("w").toInt();
int h = element.attribute("h").toInt();
// Get all children ("t" nodes)
QDomNodeList children = element.childNodes();
for (int j=0; j<children.length(); j++) {
QDomElement child = children.at(j).toElement();
if (child.nodeName().toLower() == "t") {
QString text = child.text();
int weight = child.attribute("w").toInt(); // Image weight
if (weight >= global.getMinimumRecognitionWeight()) {
// Check to see if this word matches something we're looking for
for (int k=0; k<highlightWords.size(); k++) {
QString searchWord = highlightWords[k].toLower();
if (searchWord.endsWith("*"))
searchWord.chop(1);
if (text.toLower().contains(searchWord)) {
found = true;
p2.drawRect(x,y,w,h);
}
}
}
}
}
}
// If nothing was found, we exit
if (!found)
return "";
// Paint the highlight onto the background & save over the original
p2.setOpacity(0.4);
p2.drawPixmap(0,0,overlayPix);
p2.restore();
//p2.end();
// Create the actual overlay. We do this in two steps to avoid
// constantly painting the same area
QPixmap finalPix(originalFile.size());
finalPix.fill(Qt::transparent);
QPainter p3(&finalPix);
p3.save();
p3.setBackgroundMode(Qt::TransparentMode);
p3.setRenderHint(QPainter::Antialiasing,true);
p3.drawPixmap(0,0,originalFile);
p3.setOpacity(0.4);
p3.drawPixmap(0,0,overlayPix);
p3.restore();
finalPix.save(filename);
QLOG_TRACE_OUT();
return "file://"+filename;
// return "this.src='file://"+filename+"';";
}
/* Modify an image tag. Basically we turn it back into a picture, write out the file, and
modify the ENML */
void NoteFormatter::modifyImageTags(QWebElement &enMedia, QString &hash) {
QLOG_TRACE_IN();
QString mimetype = enMedia.attribute("type");
qint32 resLid = 0;
resLid = hashMap[hash];
QString highlightString = "";
if (resLid>0) {
QLOG_TRACE() << "Getting resource";
Resource r = resourceMap[resLid];
QLOG_TRACE() << "resource retrieved";
MimeReference ref;
QString filename;
ResourceAttributes attributes;
if (r.attributes.isSet())
attributes = r.attributes;
if (attributes.fileName.isSet())
filename = attributes.fileName;
QString type = ref.getExtensionFromMime(mimetype, filename);
Data data;
if (r.data.isSet())
data = r.data;
if (data.size.isSet() && data.size > 0) {
QString imgfile = "file:///"+global.fileManager.getDbDirPath(QString("dba/") +QString::number(resLid) +type);
enMedia.setAttribute("src", imgfile);
// Check if this is a LaTeX image
ResourceAttributes attributes;
if (r.attributes.isSet())
attributes = r.attributes;
QString sourceUrl = "";
if (attributes.sourceURL.isSet())
sourceUrl = attributes.sourceURL;
if (sourceUrl.toLower().startsWith("http://latex.codecogs.com/gif.latex?")) {
enMedia.appendInside("<img/>");
QWebElement newText = enMedia.lastChild();
enMedia.setAttribute("en-tag", "en-latex");
newText.setAttribute("onMouseOver", "style.cursor='pointer'");
sourceUrl.replace("http://latex.codecogs.com/gif.latex?","");
newText.setAttribute("title", sourceUrl);
newText.setAttribute("href", "latex:///"+QString::number(resLid));
}
enMedia.setAttribute("onContextMenu", "window.browserWindow.imageContextMenu('"
+QString::number(resLid) +"', '"
+QString::number(resLid) +type +"');");
if (!global.disableImageHighlight()) {
highlightString = addImageHighlight(resLid, imgfile);
if (highlightString != "")
enMedia.setAttribute("src", highlightString);
//if (highlightString != "")
// enMedia.setAttribute("onload", highlightString);
}
}
} else {
resourceError = true;
QLOG_DEBUG() << "Resource error. Setting note to read-only.";
readOnly = true;
}
// Reset the tags to something that WebKit will understand
enMedia.setAttribute("en-tag", "en-media");
enMedia.setPlainText("");
enMedia.setAttribute("lid", QString::number(resLid));
// rename the <enmedia> tag to <img>
enMedia.setOuterXml(enMedia.toOuterXml().replace("<en-media","<img"));
enMedia.setOuterXml(enMedia.toOuterXml().replace("</en-media>","</img>"));
QLOG_TRACE_OUT();
}
// Modify the en-media tag into an attachment
void NoteFormatter::modifyApplicationTags(QWebElement &enmedia, QString &hash, QString appl) {
QLOG_TRACE_IN();
if (appl.toLower() == "vnd.evernote.ink") {
QLOG_DEBUG() << "Note is ink-note. Setting to read-only.";
inkNote = true;
readOnly = true;
buildInkNote(enmedia, hash);
return;
}
ResourceTable resTable(global.db);
QString contextFileName;
QLOG_DEBUG() << "Fetching for note: " << note.guid << " hash: " << hash;
qint32 resLid = resTable.getLidByHashHex(note.guid, hash);
Resource r;
resTable.get(r, resLid, false);
if (!r.data.isSet())
resourceError = true;
else {
// If we are running the formatter and we are not generating a thumbnail
QString mimetype = "";
if (r.mime.isSet())
mimetype = r.mime;
// Check that we don't have a locked PDF. If we do, then disable PDF previews.
if (mimetype == "application/pdf") {
QString file = global.fileManager.getDbaDirPath() + QString::number(resLid) +".pdf";
Poppler::Document *doc = Poppler::Document::load(file);
if (doc != NULL && doc->isLocked())
pdfPreview = false;
}
if (mimetype == "application/pdf" && pdfPreview && !thumbnail) {
modifyPdfTags(resLid, enmedia);
return;
}
// If we are running the formatter so we can generate a thumbnail and it is a PDF
if (mimetype == "application/pdf" && pdfPreview && thumbnail) {
QString printImageFile = global.fileManager.getTmpDirPath() + QString::number(resLid) +QString("-print.jpg");
QString file = global.fileManager.getDbaDirPath() + QString::number(resLid) +".pdf";
Poppler::Document *doc;
doc = Poppler::Document::load(file);
if (doc == NULL)
return;
QImage *image = new QImage(doc->page(0)->renderToImage());
image->save(printImageFile,"jpg");
delete image;
enmedia.setAttribute("src", printImageFile);
enmedia.removeAttribute("hash");
enmedia.removeAttribute("type");
enmedia.setOuterXml(enmedia.toOuterXml().replace("<en-media","<img"));
enmedia.setOuterXml(enmedia.toOuterXml().replace("</en-media>","</img>"));
return;
}
QString fileDetails = "";
MimeReference ref;
ResourceAttributes attributes;
if (r.attributes.isSet())
attributes = r.attributes;
if (attributes.fileName.isSet())
fileDetails = ref.getExtensionFromMime(r.mime, fileDetails);
enmedia.setAttribute("href", QString("nnres:") +global.fileManager.getDbaDirPath()+QString::number(resLid)
+fileDetails);
contextFileName = global.fileManager.getTmpDirPath("")+QString::number(resLid) +global.attachmentNameDelimeter + fileDetails;
// Setup the context menu. This is useful if we want to do a "save as" or such
contextFileName = contextFileName.replace("\\", "/");
enmedia.setAttribute("onContextMenu", "window.browserWindow.resourceContextMenu('" +contextFileName +"');");
enmedia.setAttribute("en-tag", "en-media");
enmedia.setAttribute("lid", QString::number(resLid));
enmedia.appendInside("<img/>");
QWebElement newText = enmedia.lastChild();
// Build an icon of the image
QString fileExt;
if (attributes.fileName.isSet())
fileExt = attributes.fileName;
else
fileExt = appl;
QString fn;
QString mime;
if (attributes.fileName.isSet())
fn = attributes.fileName;
if (r.mime.isSet())
mime = r.mime;
fileExt = ref.getExtensionFromMime(mime, fn);
QString icon = findIcon(resLid, r, fileExt);
newText.setAttribute("src", "file:///"+icon);
if (attributes.fileName.isSet())
newText.setAttribute("title",attributes.fileName);
newText.setAttribute("en-tag", "temporary");
//Rename the tag to a <a> link
enmedia.setOuterXml(enmedia.toOuterXml().replace("<en-media","<a"));
enmedia.setOuterXml(enmedia.toOuterXml().replace("</en-media>","</a>"));
}
QLOG_TRACE_OUT();
}
// Build an icon for any attachments
QString NoteFormatter::findIcon(qint32 lid, Resource r, QString appl) {
QLOG_TRACE_IN();
FilterCriteria *criteria = global.filterCriteria[global.filterPosition];
// First get the icon for this type of file
resourceHighlight = false;
if (criteria->isSearchStringSet() && criteria->getSearchString() != "") {
FilterEngine engine;
resourceHighlight = engine.resourceContains(lid, criteria->getSearchString(), NULL);
}
QString fileName = global.fileManager.getDbaDirPath(QString::number(lid) +appl);
QIcon icon;
QFileInfo info(fileName);
QFileIconProvider provider;
icon = provider.icon(info);
// Build a string name for the display
QString displayName;
ResourceAttributes attributes;
if (r.attributes.isSet())
attributes = r.attributes;
if (attributes.fileName.isSet())
displayName = attributes.fileName;
else
displayName = appl.toUpper() +" " +QString(tr("File"));
// Setup the painter
QPainter p;
// Setup the font
QFont font; // =p.font() ;
global.getGuiFont(font);
QPen fontPen;
fontPen.setColor(QColor(global.getEditorFontColor()));
// font.setFamily("Arial");
QFontMetrics fm(font);
int width = fm.width(displayName);
if (width < 40) // steup a minimum width
width = 40;
width=width+50; // Add 10 px for padding & 40 for the icon
// Start drawing a new pixmap for the image in the note
QPoint textPoint(40,15);
QPoint sizePoint(40,29);
QPixmap pixmap(width,37);
if (resourceHighlight) {
pixmap.fill(Qt::yellow);
} else
pixmap.fill(QColor(global.getEditorBackgroundColor()));
p.begin(&pixmap);
p.setPen(fontPen);
p.setFont(font);
p.drawPixmap(QPoint(3,3), icon.pixmap(QSize(30,40)));
// Write out the attributes of the file
p.drawText(textPoint, displayName);
QString unit = QString(tr("Bytes"));
qint64 size = QFileInfo(fileName).size();
if (size > 1024) {
size = size/1024;
unit = QString(tr("KB"));
}
if (size > 1024) {
size = size/1024;
unit= QString("MB");
}
p.drawText(sizePoint, QString::number(size).trimmed() +" " +unit);
p.drawRect(0,0,width-1,37-1); // Draw a rectangle around the image.
p.end();
// Now that it is drawn, we write it out to a temporary file
QString tmpFile = global.fileManager.getTmpDirPath(QString::number(lid) + QString("_icon.png"));
pixmap.save(tmpFile, "png");
return tmpFile;
QLOG_TRACE_OUT();
}
// Modify the en-to tag into an input field
void NoteFormatter::modifyTodoTags(QWebElement &todo) {
QLOG_TRACE_IN();
todo.setAttribute("type", "checkbox");
// Checks the en-to tag wheter or not the todo-item is checked or not
// and sets up the HTML to keep storing the information in value
QString checked = todo.attribute("checked");
if (checked.toLower() == "true")
todo.setAttribute("checked", "checked");
else
todo.removeAttribute("checked");
todo.setAttribute("onClick", "if(!checked) removeAttribute('checked'); else setAttribute('checked', 'checked'); editorWindow.editAlert();");
todo.setAttribute("style", "cursor: hand;");
todo.setOuterXml(todo.toOuterXml().replace("en-todo","input"));
QLOG_TRACE_OUT();
}
/* If we have an ink note, then we need to pull the image and display it */
bool NoteFormatter::buildInkNote(QWebElement &docElem, QString &hash) {
QLOG_TRACE_IN();
ResourceTable resTable(global.db);
qint32 resLid = resTable.getLidByHashHex(note.guid, hash);
if (resLid <= 0)
return false;
docElem.setAttribute("en-tag", "en-media");
docElem.setAttribute("lid", QString::number(resLid));
docElem.setAttribute("type", "application/vnd.evernote.ink");
QString filename = QString("file:///") +global.fileManager.getDbaDirPath()+QString::number(resLid)+QString(".png");
docElem.setAttribute("src", filename);
QString k = docElem.toOuterXml();
k.replace("<en-media", "<img");
k.replace("enmedia>", "img>");;
docElem.setOuterXml(k);
QLOG_TRACE_OUT();
return true;
}
void NoteFormatter::modifyPdfTags(qint32 resLid, QWebElement &enmedia) {
QLOG_TRACE_IN();
enmedia.setAttribute("width", "100%");
enmedia.setAttribute("height", "100%");
enmedia.setAttribute("lid", QString::number(resLid));
QString x = enmedia.toOuterXml();
x.replace("en-media", "object");
enmedia.setOuterXml(x);
x = enmedia.toOuterXml();
QLOG_TRACE_OUT();
}
void NoteFormatter::setHighlightText(QString text) {
QLOG_TRACE_IN();
QStringList temp = text.split(" ");
for (int i=0; i<temp.size(); i++) {
if (temp[i].trimmed() != "")
highlightWords.append(temp[i]);
}
QLOG_TRACE_OUT();
}
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