1436 lines
45 KiB
C++
1436 lines
45 KiB
C++
/*
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* Copyright (C) 2020, KylinSoft Co., Ltd.
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <https://www.gnu.org/licenses/>.
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*
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* Authors: zhangpengfei <zhangpengfei@kylinos.cn>
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* Modified by: zhangzihao <zhangzihao@kylinos.cn>
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* Modified by: zhangjiaping <zhangjiaping@kylinos.cn>
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*
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*/
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#include "file-utils.h"
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#include <QXmlStreamReader>
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#include <QMutexLocker>
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#include <gio/gdesktopappinfo.h>
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#include <QDBusMessage>
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#include <QDBusConnection>
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#include <QDomDocument>
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#include <QDBusInterface>
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#include <QDBusReply>
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#include <QDesktopServices>
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#include <QMimeDatabase>
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#include <QCryptographicHash>
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#include <QFileInfo>
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#include <QFile>
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#include <QApplication>
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#include <QDir>
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#include <QDebug>
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#include <QUrl>
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#include <QDomElement>
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#include <QClipboard>
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#include <QQueue>
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#include <QFontMetrics>
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#include <QTextBoundaryFinder>
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#include <quazip5/quazipfile.h>
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#include <stdio.h>
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#include <unistd.h>
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#include <stdlib.h>
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#include <string.h>
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#include <sys/stat.h>
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#include <fcntl.h>
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#include <quazip5/quazip.h>
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#include <uchardet/uchardet.h>
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#include <poppler/qt5/poppler-qt5.h>
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#include "gobject-template.h"
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#include "hanzi-to-pinyin.h"
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#include "common.h"
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#include "icon-loader.h"
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using namespace UkuiSearch;
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#define MAX_CONTENT_LENGTH 20480000
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/**
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* @brief 查找elem的子节点
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* @param elem 起始节点
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* @param names 名称链
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* @param nodes 查找到的全部结果
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*/
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void findNodes(const QDomElement &elem, QQueue<QString> &names, QList<QDomElement> &nodes)
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{
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QString targetName = names.dequeue();
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QDomNode node = elem.firstChild();
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while (!node.isNull()) {
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QDomElement e = node.toElement();
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if (!e.isNull() && e.tagName() == targetName) {
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if (names.empty()) {
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nodes.append(e);
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} else {
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findNodes(e, names, nodes);
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break;
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}
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}
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node = node.nextSibling();
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}
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}
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void findNodesByAttr(const QDomElement &elem, QQueue <QString> &names, QList <QDomElement> &nodes, const QString &attr, const QStringList &values)
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{
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findNodes(elem, names, nodes);
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QList<QDomElement>::iterator it = nodes.begin();
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while (it != nodes.end()) {
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if ((*it).hasAttribute(attr) && values.contains((*it).attribute(attr))) {
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it++;
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} else {
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it = nodes.erase(it);
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}
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}
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}
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bool findNodeText(const QDomElement &elem, QQueue<QString> &names, QString &content)
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{
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QList<QDomElement> nodes;
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findNodes(elem, names, nodes);
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for (const auto &node : nodes) {
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content.append(node.text());
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if (content.length() >= MAX_CONTENT_LENGTH / 3) {
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return true;
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}
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}
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return false;
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}
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void findNodeAttr(const QDomElement &elem, QQueue<QString> &names, const QString &attr, QStringList &attrs)
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{
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QList<QDomElement> nodes;
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findNodes(elem, names, nodes);
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for (const auto &node : nodes) {
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if (node.hasAttribute(attr)) {
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attrs.append(node.attribute(attr));
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}
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}
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}
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void processUOFPPT(const QDomDocument &doc, QString &content)
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{
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QDomElement rootElem = doc.documentElement();
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QList<QDomElement> nodes;
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QQueue<QString> names; //每个节点的名称
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names << "uof:演示文稿" << "演:主体" << "演:幻灯片集" << "演:幻灯片";
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findNodes(rootElem, names, nodes);
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if (nodes.empty()) {
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//TODO 在uof-ppt不存在锚点节点时，直接查找文本节点？
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return;
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}
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QStringList objs;
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//每一个 演:幻灯片 -> 锚点
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for (const auto &node : nodes) {
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names.clear();
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names << "uof:锚点";
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findNodeAttr(node, names, "uof:图形引用", objs);
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}
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nodes.clear();
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names.clear();
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names << "uof:对象集" << "图:图形";
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findNodesByAttr(rootElem, names, nodes, "图:标识符", objs);
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if (nodes.empty()) {
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return;
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}
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QList<QDomElement> paraNodes; //全部段落节点
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for (const auto &node : nodes) {
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names.clear();
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names << "图:文本内容" << "字:段落";
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findNodes(node, names, paraNodes);
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}
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nodes.clear();
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for (const auto &node : paraNodes) {
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names.clear();
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names << "字:句";
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findNodes(node, names, nodes); //全部段落下的全部句节点
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}
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for (const auto &node : nodes) {
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names.clear();
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names << "字:文本串";
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if (findNodeText(node, names, content)) {
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break;
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}
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}
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}
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bool loadZipFileToDoc(QuaZip &zipFile, QDomDocument &doc, const QString &fileName)
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{
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if (!zipFile.isOpen() && !zipFile.open(QuaZip::mdUnzip)) {
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return false;
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}
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if (!zipFile.setCurrentFile(fileName)) {
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return false;
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}
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QuaZipFile file(&zipFile);
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if (!file.open(QIODevice::ReadOnly)) {
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return false;
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}
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doc.clear();
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if (!doc.setContent(&file)) {
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file.close();
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return false;
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}
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file.close();
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return true;
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}
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FileUtils::FileUtils() {
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}
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std::string FileUtils::makeDocUterm(QString path) {
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return QCryptographicHash::hash(path.toUtf8(), QCryptographicHash::Md5).toHex().toStdString();
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}
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/**
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* @brief FileUtils::getFileIcon 获取文件图标
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* @param uri "file:///home/xxx/xxx/xxxx.txt"格式
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* @param checkValid
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* @return
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*/
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QIcon FileUtils::getFileIcon(const QString &uri, bool checkValid) {
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Q_UNUSED(checkValid)
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auto file = wrapGFile(g_file_new_for_uri(uri.toUtf8().constData()));
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auto info = wrapGFileInfo(g_file_query_info(file.get()->get(),
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G_FILE_ATTRIBUTE_STANDARD_ICON,
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G_FILE_QUERY_INFO_NONE,
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nullptr,
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nullptr));
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if(!G_IS_FILE_INFO(info.get()->get()))
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return IconLoader::loadIconQt("unknown",QIcon(":/res/icons/unknown.svg"));
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GIcon *g_icon = g_file_info_get_icon(info.get()->get());
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//do not unref the GIcon from info.
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if(G_IS_ICON(g_icon)) {
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const gchar* const* icon_names = g_themed_icon_get_names(G_THEMED_ICON(g_icon));
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if(icon_names) {
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auto p = icon_names;
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while(*p) {
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QIcon icon = IconLoader::loadIconQt(*p);
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if(!icon.isNull()) {
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return icon;
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} else {
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p++;
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}
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}
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}
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}
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return IconLoader::loadIconQt("unknown", QIcon(":/res/icons/unknown.svg"));
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}
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QIcon FileUtils::getSettingIcon() {
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return IconLoader::loadIconQt("ukui-control-center", QIcon(":/res/icons/ukui-control-center.svg")); //返回控制面板应用图标
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// 返回控制面板应用图标
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}
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/**
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* @brief FileUtils::getFileName 获取文件名
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* @param uri 格式为"file:///home/xxx/xxx/xxxx.txt"
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* @return
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*/
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QString FileUtils::getFileName(const QString &uri) {
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QFileInfo info(uri);
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if(info.exists()) {
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return info.fileName();
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} else {
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return "Unknown File";
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}
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// QUrl url = uri;
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// if (url.fileName().isEmpty()) {
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// return "Unknown File";
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// }
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// return url.fileName();
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}
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/**
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* @brief FileUtils::getAppName 获取应用名
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* @param path .destop文件的完整路径
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* @return
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*/
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QString FileUtils::getAppName(const QString &path) {
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QByteArray ba;
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ba = path.toUtf8();
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GKeyFile * keyfile;
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keyfile = g_key_file_new();
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if(!g_key_file_load_from_file(keyfile, ba.data(), G_KEY_FILE_NONE, NULL)) {
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g_key_file_free(keyfile);
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return "Unknown App";
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}
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QString name = QString(g_key_file_get_locale_string(keyfile, G_KEY_FILE_DESKTOP_GROUP, G_KEY_FILE_DESKTOP_KEY_NAME, NULL, NULL));
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g_key_file_free(keyfile);
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return name;
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}
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/**
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* @brief FileUtils::getSettingName 获取设置项名
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* @param setting 设置项传入参数，格式为 About/About->Properties
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* @return
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*/
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QString FileUtils::getSettingName(const QString &setting) {
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return setting.right(setting.length() - setting.lastIndexOf("/") - 1);
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}
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bool FileUtils::isOrUnder(QString pathA, QString pathB)
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{
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if (pathB == "/") {
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return true;
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}
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if(pathA.length() < pathB.length())
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return false;
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if(pathA == pathB || pathA.startsWith(pathB + "/"))
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return true;
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return false;
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}
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QMimeType FileUtils::getMimetype(const QString &path) {
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QMimeDatabase mdb;
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QMimeType type = mdb.mimeTypeForFile(path, QMimeDatabase::MatchContent);
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return type;
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}
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QStringList FileUtils::findMultiToneWords(const QString &hanzi) {
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QStringList output, results;
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HanZiToPinYin::getInstance()->getResults(hanzi.toStdString(), results);
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QString oneResult(results.join(""));
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QString firstLetter;
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for (QString & info : results) {
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if (!info.isEmpty())
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firstLetter += info.at(0);
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}
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return output << oneResult << firstLetter;
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}
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/**
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* @brief FileUtils::getDocxTextContent
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* @param path: abs path
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* @return docx to QString
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*/
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void FileUtils::getDocxTextContent(const QString &path, QString &textcontent) {
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//fix me :optimized by xpath??
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QFileInfo info = QFileInfo(path);
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if(!info.exists() || info.isDir())
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return;
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QuaZip file(path);
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if(!file.open(QuaZip::mdUnzip))
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return;
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if(!file.setCurrentFile("word/document.xml", QuaZip::csSensitive)) {
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file.close();
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return;
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}
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QuaZipFile fileR(&file);
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fileR.open(QIODevice::ReadOnly); //读取方式打开
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QXmlStreamReader reader(&fileR);
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while (!reader.atEnd()){
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if(reader.readNextStartElement() and reader.name().toString() == "t"){
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textcontent.append(reader.readElementText().replace("\n", "").replace("\r", " "));
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if(textcontent.length() >= MAX_CONTENT_LENGTH/3){
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break;
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}
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}
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}
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fileR.close();
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file.close();
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return;
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/* //原加载DOM文档方式；
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QDomDocument doc;
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doc.setContent(fileR.readAll());
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fileR.close();
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QDomElement first = doc.firstChildElement("w:document");
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QDomElement body = first.firstChildElement("w:body");
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while(!body.isNull()) {
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QDomElement wp = body.firstChildElement("w:p");
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while(!wp.isNull()) {
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QDomElement wr = wp.firstChildElement("w:r");
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while(!wr.isNull()) {
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QDomElement wt = wr.firstChildElement("w:t");
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textcontent.append(wt.text().replace("\n", "")).replace("\r", " ");
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if(textcontent.length() >= MAX_CONTENT_LENGTH / 3) {
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file.close();
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return;
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}
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wr = wr.nextSiblingElement();
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}
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wp = wp.nextSiblingElement();
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}
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body = body.nextSiblingElement();
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}
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file.close();
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return;
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*/
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}
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void FileUtils::getPptxTextContent(const QString &path, QString &textcontent) {
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QFileInfo info = QFileInfo(path);
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if(!info.exists() || info.isDir())
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return;
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QuaZip file(path);
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if(!file.open(QuaZip::mdUnzip))
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return;
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QString prefix("ppt/slides/slide");
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QStringList fileList;
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for(QString i : file.getFileNameList()) {
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if(i.startsWith(prefix))
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fileList << i;
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}
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if(fileList.isEmpty()) {
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file.close();
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return;
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}
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for(int i = 0; i < fileList.size(); ++i){
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QString name = prefix + QString::number(i + 1) + ".xml";
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if(!file.setCurrentFile(name)) {
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continue;
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}
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QuaZipFile fileR(&file);
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fileR.open(QIODevice::ReadOnly);
|
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|
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QXmlStreamReader reader(&fileR);
|
||
|
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while (!reader.atEnd()){
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if(reader.readNextStartElement() and reader.name().toString() == "t"){
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textcontent.append(reader.readElementText().replace("\n", "").replace("\r", " "));
|
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if(textcontent.length() >= MAX_CONTENT_LENGTH/3){
|
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break;
|
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}
|
||
}
|
||
}
|
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fileR.close();
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}
|
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file.close();
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return;
|
||
|
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/*
|
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QDomElement sptree;
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QDomElement sp;
|
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QDomElement txbody;
|
||
QDomElement ap;
|
||
QDomElement ar;
|
||
QDomDocument doc;
|
||
QDomElement at;
|
||
// QDomNodeList atList;
|
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for(int i = 0; i < fileList.size(); ++i) {
|
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QString name = prefix + QString::number(i + 1) + ".xml";
|
||
if(!file.setCurrentFile(name)) {
|
||
continue;
|
||
}
|
||
QuaZipFile fileR(&file);
|
||
fileR.open(QIODevice::ReadOnly);
|
||
doc.clear();
|
||
doc.setContent(fileR.readAll());
|
||
fileR.close();
|
||
|
||
//fix me :optimized by xpath??
|
||
//This method looks better but slower,
|
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//If xml file is very large with many useless node,this method will take a lot of time.
|
||
|
||
// atList = doc.elementsByTagName("a:t");
|
||
// for(int i = 0; i<atList.size(); ++i)
|
||
// {
|
||
// at = atList.at(i).toElement();
|
||
// if(!at.isNull())
|
||
// {
|
||
// textcontent.append(at.text().replace("\r","")).replace("\t"," ");
|
||
// if(textcontent.length() >= MAX_CONTENT_LENGTH/3)
|
||
// {
|
||
// file.close();
|
||
// return;
|
||
// }
|
||
// }
|
||
// }
|
||
//This is ugly but seems more efficient when handel a large file.
|
||
sptree = doc.firstChildElement("p:sld").firstChildElement("p:cSld").firstChildElement("p:spTree");
|
||
while(!sptree.isNull()) {
|
||
sp = sptree.firstChildElement("p:sp");
|
||
while(!sp.isNull()) {
|
||
txbody = sp.firstChildElement("p:txBody");
|
||
while(!txbody.isNull()) {
|
||
ap = txbody.firstChildElement("a:p");
|
||
while(!ap.isNull()) {
|
||
ar = ap.firstChildElement("a:r");
|
||
while(!ar.isNull()) {
|
||
at = ar.firstChildElement("a:t");
|
||
textcontent.append(at.text().replace("\r", "")).replace("\t", "");
|
||
if(textcontent.length() >= MAX_CONTENT_LENGTH / 3) {
|
||
file.close();
|
||
return;
|
||
}
|
||
ar = ar.nextSiblingElement();
|
||
}
|
||
ap = ap.nextSiblingElement();
|
||
}
|
||
txbody = txbody.nextSiblingElement();
|
||
}
|
||
sp = sp.nextSiblingElement();
|
||
}
|
||
sptree = sptree.nextSiblingElement();
|
||
}
|
||
}
|
||
file.close();
|
||
return;
|
||
*/
|
||
}
|
||
|
||
void FileUtils::getXlsxTextContent(const QString &path, QString &textcontent) {
|
||
QFileInfo info = QFileInfo(path);
|
||
if(!info.exists() || info.isDir())
|
||
return;
|
||
QuaZip file(path);
|
||
if(!file.open(QuaZip::mdUnzip))
|
||
return;
|
||
|
||
if(!file.setCurrentFile("xl/sharedStrings.xml", QuaZip::csSensitive)) {
|
||
file.close();
|
||
return;
|
||
}
|
||
QuaZipFile fileR(&file);
|
||
|
||
fileR.open(QIODevice::ReadOnly);
|
||
|
||
QXmlStreamReader reader(&fileR);
|
||
|
||
while (!reader.atEnd()){
|
||
if(reader.readNextStartElement() and reader.name().toString() == "t"){
|
||
textcontent.append(reader.readElementText().replace("\n", "").replace("\r", " "));
|
||
if(textcontent.length() >= MAX_CONTENT_LENGTH/3){
|
||
break;
|
||
}
|
||
}
|
||
}
|
||
|
||
fileR.close();
|
||
file.close();
|
||
return;
|
||
|
||
/*
|
||
QDomDocument doc;
|
||
doc.setContent(fileR.readAll());
|
||
fileR.close();
|
||
QDomElement sst = doc.firstChildElement("sst");
|
||
QDomElement si;
|
||
QDomElement r;
|
||
QDomElement t;
|
||
while(!sst.isNull()) {
|
||
si = sst.firstChildElement("si");
|
||
while(!si.isNull()) {
|
||
r = si.firstChildElement("r");
|
||
if(r.isNull()) {
|
||
t = si.firstChildElement("t");
|
||
} else {
|
||
t = r.firstChildElement("t");
|
||
}
|
||
if(t.isNull())
|
||
continue;
|
||
textcontent.append(t.text().replace("\r", "").replace("\n", ""));
|
||
if(textcontent.length() >= MAX_CONTENT_LENGTH / 3) {
|
||
file.close();
|
||
return;
|
||
}
|
||
si = si.nextSiblingElement();
|
||
}
|
||
sst = sst.nextSiblingElement();
|
||
}
|
||
file.close();
|
||
return;
|
||
*/
|
||
}
|
||
|
||
void FileUtils::getPdfTextContent(const QString &path, QString &textcontent) {
|
||
Poppler::Document *doc = Poppler::Document::load(path);
|
||
if(doc->isLocked()) {
|
||
delete doc;
|
||
return;
|
||
}
|
||
const QRectF qf;
|
||
int pageNum = doc->numPages();
|
||
for(int i = 0; i < pageNum; ++i) {
|
||
Poppler::Page *page = doc->page(i);
|
||
if(page) {
|
||
textcontent.append(page->text(qf).replace("\n", "").replace("\r", " "));
|
||
delete page;
|
||
if(textcontent.length() >= MAX_CONTENT_LENGTH / 3)
|
||
break;
|
||
}
|
||
}
|
||
delete doc;
|
||
return;
|
||
}
|
||
|
||
void FileUtils::getTxtContent(const QString &path, QString &textcontent) {
|
||
QFile file(path);
|
||
if(!file.open(QIODevice::ReadOnly | QIODevice::Text))
|
||
return;
|
||
|
||
QByteArray encodedString = file.read(MAX_CONTENT_LENGTH);
|
||
|
||
uchardet_t chardet = uchardet_new();
|
||
if(uchardet_handle_data(chardet, encodedString.constData(), encodedString.size()) != 0)
|
||
qWarning() << "Txt file encoding format detect fail!" << path;
|
||
|
||
uchardet_data_end(chardet);
|
||
const char *codec = uchardet_get_charset(chardet);
|
||
|
||
if(QTextCodec::codecForName(codec) == nullptr) {
|
||
qWarning() << "Unsupported Text encoding format" << path << QString::fromLocal8Bit(codec);
|
||
return;
|
||
}
|
||
|
||
QTextStream stream(encodedString, QIODevice::ReadOnly);
|
||
stream.setCodec(codec);
|
||
uchardet_delete(chardet);
|
||
|
||
textcontent = stream.readAll().replace("\n", "").replace("\r", " ");
|
||
|
||
file.close();
|
||
encodedString.clear();
|
||
chardet = NULL;
|
||
stream.flush();
|
||
|
||
return;
|
||
}
|
||
|
||
int FileUtils::openFile(QString &path, bool openInDir)
|
||
{
|
||
int res = -1;
|
||
if(openInDir) {
|
||
QStringList list;
|
||
list.append(path);
|
||
QDBusMessage message = QDBusMessage::createMethodCall("org.freedesktop.FileManager1",
|
||
"/org/freedesktop/FileManager1",
|
||
"org.freedesktop.FileManager1",
|
||
"ShowItems");
|
||
message.setArguments({list, "ukui-search"});
|
||
QDBusMessage messageRes = QDBusConnection::sessionBus().call(message);
|
||
if (QDBusMessage::ReplyMessage == messageRes.ReplyMessage) {
|
||
res = 0;
|
||
} else {
|
||
qDebug() << "Error! QDBusMessage reply error! ReplyMessage:" << messageRes.ReplyMessage;
|
||
res = -1;
|
||
}
|
||
} else {
|
||
auto file = wrapGFile(g_file_new_for_uri(QUrl::fromLocalFile(path).toString().toUtf8().constData()));
|
||
auto fileInfo = wrapGFileInfo(g_file_query_info(file.get()->get(),
|
||
"standard::*," "time::*," "access::*," "mountable::*," "metadata::*," "trash::*," G_FILE_ATTRIBUTE_ID_FILE,
|
||
G_FILE_QUERY_INFO_NONE,
|
||
nullptr,
|
||
nullptr));
|
||
QString mimeType = g_file_info_get_content_type (fileInfo.get()->get());
|
||
if (mimeType == nullptr) {
|
||
if (g_file_info_has_attribute(fileInfo.get()->get(), "standard::fast-content-type")) {
|
||
mimeType = g_file_info_get_attribute_string(fileInfo.get()->get(), "standard::fast-content-type");
|
||
}
|
||
}
|
||
|
||
GError *error = NULL;
|
||
GAppInfo *info = NULL;
|
||
/*
|
||
* g_app_info_get_default_for_type function get wrong default app, so we get the
|
||
* default app info from mimeapps.list, and chose the right default app for mimeType file
|
||
*/
|
||
QString mimeAppsListPath = QStandardPaths::writableLocation(QStandardPaths::HomeLocation)
|
||
+ "/.config/mimeapps.list";
|
||
GKeyFile *keyfile = g_key_file_new();
|
||
gboolean ret = g_key_file_load_from_file(keyfile, mimeAppsListPath.toUtf8(), G_KEY_FILE_NONE, &error);
|
||
if (false == ret) {
|
||
qWarning()<<"load mimeapps list error msg"<<error->message;
|
||
info = g_app_info_get_default_for_type(mimeType.toUtf8().constData(), false);
|
||
g_error_free(error);
|
||
} else {
|
||
gchar *desktopApp = g_key_file_get_string(keyfile, "Default Applications", mimeType.toUtf8(), &error);
|
||
if (NULL != desktopApp) {
|
||
info = (GAppInfo*)g_desktop_app_info_new(desktopApp);
|
||
g_free (desktopApp);
|
||
} else {
|
||
info = g_app_info_get_default_for_type(mimeType.toUtf8().constData(), false);
|
||
}
|
||
}
|
||
g_key_file_free (keyfile);
|
||
if(!G_IS_APP_INFO(info)) {
|
||
res = -1;
|
||
} else {
|
||
bool isSuccess(false);
|
||
QDBusInterface * appLaunchInterface = new QDBusInterface("com.kylin.AppManager",
|
||
"/com/kylin/AppManager",
|
||
"com.kylin.AppManager",
|
||
QDBusConnection::sessionBus());
|
||
if(!appLaunchInterface->isValid()) {
|
||
qWarning() << qPrintable(QDBusConnection::sessionBus().lastError().message());
|
||
isSuccess = false;
|
||
} else {
|
||
appLaunchInterface->setTimeout(10000);
|
||
QDBusReply<bool> reply = appLaunchInterface->call("LaunchDefaultAppWithUrl", QUrl::fromLocalFile(path).toString());
|
||
if(reply.isValid()) {
|
||
isSuccess = reply;
|
||
} else {
|
||
qWarning() << "SoftWareCenter dbus called failed!";
|
||
isSuccess = false;
|
||
}
|
||
}
|
||
if(appLaunchInterface) {
|
||
delete appLaunchInterface;
|
||
}
|
||
appLaunchInterface = NULL;
|
||
if (!isSuccess){
|
||
QDesktopServices::openUrl(QUrl::fromLocalFile(path));
|
||
}
|
||
res = 0;
|
||
}
|
||
g_object_unref(info);
|
||
}
|
||
return res;
|
||
}
|
||
|
||
bool FileUtils::copyPath(QString &path)
|
||
{
|
||
QApplication::clipboard()->setText(path);
|
||
return true;
|
||
}
|
||
|
||
QString FileUtils::escapeHtml(const QString &str)
|
||
{
|
||
QString temp = str;
|
||
temp.replace("<", "<");
|
||
temp.replace(">", ">");
|
||
return temp;
|
||
}
|
||
|
||
QString FileUtils::getSnippet(const std::string &myStr, uint start, const QString &keyword)
|
||
{
|
||
QFont boldFont(qApp->font().family());
|
||
boldFont.setPointSizeF(qApp->font().pointSizeF() + 2);
|
||
boldFont.setWeight(QFont::Bold);
|
||
QFontMetricsF boldMetricsF(boldFont);
|
||
|
||
uint strLength = 240;
|
||
bool elideLeft(false);
|
||
std::string sub = myStr.substr(start, strLength);
|
||
QString content = QString::fromStdString(sub);
|
||
|
||
//不够截往前补
|
||
if (start + strLength > myStr.length()) {
|
||
//新的起始位置
|
||
int newStart = myStr.length() - strLength;
|
||
|
||
if (myStr.length() < strLength) {
|
||
newStart = 0;
|
||
sub = myStr;
|
||
} else {
|
||
sub = myStr.substr(newStart, strLength);
|
||
}
|
||
|
||
if (horizontalAdvanceContainsKeyword(QString::fromStdString(myStr.substr(newStart, start)) + boldMetricsF.horizontalAdvance(keyword), keyword) > 2 * LABEL_MAX_WIDTH) {
|
||
if (horizontalAdvanceContainsKeyword(QString::fromStdString(myStr.substr(start)), keyword) <= 2 * LABEL_MAX_WIDTH) {
|
||
elideLeft = true;
|
||
} else {
|
||
sub = myStr.substr(start);
|
||
}
|
||
}
|
||
content = QString::fromStdString(sub);
|
||
}
|
||
|
||
QFont font(qApp->font().family());
|
||
font.setPointSizeF(qApp->font().pointSizeF());
|
||
QFontMetricsF fontMetricsF(font);
|
||
|
||
qreal blockLength = 0;
|
||
qreal total = 0;
|
||
int lineCount = 0;
|
||
int normalLength = 0;
|
||
int boldLength = 0;
|
||
|
||
QString snippet;
|
||
int boundaryStart = 0;
|
||
int boundaryEnd = 0;
|
||
QTextBoundaryFinder fm(QTextBoundaryFinder::Grapheme, content);
|
||
|
||
if (!elideLeft) {
|
||
for (;fm.position() != -1;fm.toNextBoundary()) {
|
||
boundaryEnd = fm.position();
|
||
QString word = content.mid(boundaryStart, boundaryEnd - boundaryStart);
|
||
if (boundaryStart == boundaryEnd) {
|
||
continue;
|
||
}
|
||
|
||
if (keyword.toUpper().contains(word.toUpper())) {
|
||
if (normalLength) {
|
||
total += fontMetricsF.horizontalAdvance(content.mid(boundaryStart - normalLength, normalLength));
|
||
normalLength = 0;
|
||
blockLength = 0;
|
||
}
|
||
boldLength += (boundaryEnd - boundaryStart);
|
||
blockLength = boldMetricsF.horizontalAdvance(content.mid(boundaryEnd - boldLength, boldLength));
|
||
} else {
|
||
if (boldLength) {
|
||
total += boldMetricsF.horizontalAdvance(content.mid(boundaryStart - boldLength, boldLength));
|
||
boldLength = 0;
|
||
blockLength = 0;
|
||
}
|
||
normalLength += (boundaryEnd - boundaryStart);
|
||
blockLength = fontMetricsF.horizontalAdvance(content.mid(boundaryEnd - normalLength, normalLength));
|
||
|
||
}
|
||
|
||
if (total + blockLength >= LABEL_MAX_WIDTH && lineCount == 0) {
|
||
if (total + blockLength > LABEL_MAX_WIDTH) {
|
||
fm.toPreviousBoundary();
|
||
snippet.append("\n");
|
||
} else {
|
||
snippet.append(word).append("\n");
|
||
boundaryStart = boundaryEnd;
|
||
}
|
||
normalLength = 0;
|
||
boldLength = 0;
|
||
lineCount++;
|
||
total = 0;
|
||
blockLength = 0;
|
||
continue;
|
||
} else if (total + blockLength >= LABEL_MAX_WIDTH && lineCount == 1) {
|
||
qreal distance = 0;
|
||
qreal wordSize = 0;
|
||
if (total + blockLength > LABEL_MAX_WIDTH) {
|
||
boundaryEnd = boundaryStart;
|
||
fm.toPreviousBoundary();
|
||
} else {
|
||
snippet.append(word);
|
||
}
|
||
while (wordSize < fontMetricsF.horizontalAdvance("…")) {
|
||
boundaryStart = fm.position();
|
||
|
||
wordSize += keyword.toUpper().contains(content.mid(boundaryStart, boundaryEnd - boundaryStart).toUpper()) ?
|
||
boldMetricsF.horizontalAdvance(content.mid(boundaryStart, boundaryEnd - boundaryStart))
|
||
: fontMetricsF.horizontalAdvance(content.mid(boundaryStart, boundaryEnd - boundaryStart));
|
||
distance += (boundaryEnd - boundaryStart);
|
||
boundaryEnd = boundaryStart;
|
||
fm.toPreviousBoundary();
|
||
}
|
||
snippet = snippet.left(snippet.size() - distance);
|
||
snippet.append("…");
|
||
break;
|
||
}
|
||
snippet.append(word);
|
||
boundaryStart = boundaryEnd;
|
||
}
|
||
} else {
|
||
boundaryEnd = content.size();
|
||
for (fm.toEnd(); fm.position() != -1; fm.toPreviousBoundary()) {
|
||
boundaryStart = fm.position();
|
||
if (boundaryEnd == boundaryStart) {
|
||
continue;
|
||
}
|
||
|
||
QString word = content.mid(boundaryStart, boundaryEnd - boundaryStart);
|
||
if (keyword.toUpper().contains(word.toUpper())) {
|
||
if (normalLength) {
|
||
total += fontMetricsF.horizontalAdvance(content.mid(boundaryEnd, normalLength));
|
||
normalLength = 0;
|
||
blockLength = 0;
|
||
}
|
||
boldLength += (boundaryEnd - boundaryStart);
|
||
blockLength = boldMetricsF.horizontalAdvance(content.mid(boundaryStart, boldLength));
|
||
} else {
|
||
if (boldLength) {
|
||
total += boldMetricsF.horizontalAdvance(content.mid(boundaryEnd, boldLength));
|
||
boldLength = 0;
|
||
blockLength = 0;
|
||
}
|
||
normalLength += (boundaryEnd - boundaryStart);
|
||
blockLength = fontMetricsF.horizontalAdvance(content.mid(boundaryStart, normalLength));
|
||
|
||
}
|
||
|
||
if (total + blockLength >= LABEL_MAX_WIDTH && lineCount == 0) {
|
||
if (total + blockLength > LABEL_MAX_WIDTH) {
|
||
fm.toNextBoundary();
|
||
snippet.prepend("\n");
|
||
} else {
|
||
snippet.prepend(word).prepend("\n");
|
||
boundaryStart = boundaryEnd;
|
||
}
|
||
normalLength = 0;
|
||
boldLength = 0;
|
||
lineCount++;
|
||
total = 0;
|
||
blockLength = 0;
|
||
continue;
|
||
} else if (total + blockLength >= LABEL_MAX_WIDTH && lineCount == 1) {
|
||
qreal distance = 0;
|
||
qreal wordSize = 0;
|
||
if (total + blockLength > LABEL_MAX_WIDTH) {
|
||
boundaryStart = boundaryEnd;
|
||
fm.toNextBoundary();
|
||
} else {
|
||
snippet.prepend(word);
|
||
}
|
||
while (wordSize < fontMetricsF.horizontalAdvance("…")) {
|
||
boundaryEnd = fm.position();
|
||
QString firstLetter = content.mid(boundaryStart, boundaryEnd - boundaryStart);
|
||
wordSize += keyword.toUpper().contains(firstLetter.toUpper()) ?
|
||
boldMetricsF.horizontalAdvance(firstLetter) : fontMetricsF.horizontalAdvance(firstLetter);
|
||
distance += (boundaryEnd - boundaryStart);
|
||
boundaryStart = boundaryEnd;
|
||
fm.toNextBoundary();
|
||
}
|
||
snippet = snippet.right(snippet.size() - distance);
|
||
snippet.prepend("…");
|
||
break;
|
||
}
|
||
snippet.prepend(word);
|
||
boundaryEnd = boundaryStart;
|
||
}
|
||
}
|
||
|
||
return snippet;
|
||
}
|
||
|
||
bool FileUtils::isOpenXMLFileEncrypted(const QString &path)
|
||
{
|
||
QFile file(path);
|
||
file.open(QIODevice::ReadOnly|QIODevice::Text);
|
||
QByteArray encrypt = file.read(4);
|
||
file.close();
|
||
if (encrypt.length() < 4) {
|
||
qDebug() << "Reading file error!" << path;
|
||
return true;
|
||
}
|
||
//比较前四位是否为对应值来判断OpenXML类型文件是否加密
|
||
if ((encrypt[0] & 0x50) && (encrypt[1] & 0x4b) && (encrypt[2] & 0x03) && (encrypt[3] & 0x04)) {
|
||
return false;
|
||
} else {
|
||
qDebug() << "Encrypt!" << path;
|
||
return true;
|
||
}
|
||
}
|
||
//todo: only support docx, pptx, xlsx
|
||
bool FileUtils::isEncrypedOrUnsupport(const QString& path, const QString& suffix)
|
||
{
|
||
QMimeType type = FileUtils::getMimetype(path);
|
||
QString name = type.name();
|
||
|
||
if(name == "application/zip") {
|
||
if (suffix == "docx" || suffix == "pptx" || suffix == "xlsx") {
|
||
|
||
return FileUtils::isOpenXMLFileEncrypted(path);
|
||
} else if (suffix == "uot" || suffix == "uos" || suffix == "uop") {
|
||
return false;
|
||
|
||
} else if (suffix == "ofd") {
|
||
return false;
|
||
|
||
} else {
|
||
return true;
|
||
}
|
||
} else if(name == "text/plain") {
|
||
if(suffix.endsWith("txt"))
|
||
return false;
|
||
return true;
|
||
} else if(name == "text/html") {
|
||
if(suffix.endsWith("html"))
|
||
return false;
|
||
return true;
|
||
} else if(type.inherits("application/msword") || type.name() == "application/x-ole-storage") {
|
||
if(suffix == "doc" || suffix == "dot" || suffix == "wps" || suffix == "ppt" ||
|
||
suffix == "pps" || suffix == "dps" || suffix == "et" || suffix == "xls" || suffix == "uof") {
|
||
return false;
|
||
}
|
||
return true;
|
||
} else if(name == "application/pdf") {
|
||
if(suffix == "pdf")
|
||
return false;
|
||
return true;
|
||
|
||
} else if(name == "application/xml" || name == "application/uof") {
|
||
if(suffix == "uof") {
|
||
return false;
|
||
}
|
||
return true;
|
||
|
||
} else if (true == targetPhotographTypeMap[suffix]) {
|
||
return !isOcrSupportSize(path);
|
||
} else {
|
||
// qInfo() << "Unsupport format:[" << path << "][" << type.name() << "]";
|
||
return true;
|
||
}
|
||
}
|
||
|
||
bool FileUtils::isOcrSupportSize(QString path)
|
||
{
|
||
/*
|
||
bool res;
|
||
Pix *image = pixRead(path.toStdString().data());
|
||
if (image->h < OCR_MIN_SIZE or image->w < OCR_MIN_SIZE) {//限制图片像素尺寸
|
||
qDebug() << "file:" << path << "is not right size.";
|
||
res = false;
|
||
} else
|
||
res = true;
|
||
|
||
pixDestroy(&image);
|
||
return res;
|
||
*/
|
||
QImage file(path);
|
||
if (file.height() < OCR_MIN_SIZE or file.width() < OCR_MIN_SIZE) {//限制图片像素尺寸
|
||
// qDebug() << "file:" << path << "is not right size.";
|
||
return false;
|
||
} else
|
||
return true;
|
||
}
|
||
|
||
QString FileUtils::getHtmlText(const QString &text, const QString &keyword)
|
||
{
|
||
QString htmlString = QString("<style>"
|
||
"span {"
|
||
"font-size:%0pt;"
|
||
"font-weight:bold;"
|
||
"}"
|
||
"</style>").arg(qApp->font().pointSizeF() + 2);
|
||
bool boldOpenned = false;
|
||
|
||
QTextBoundaryFinder bf(QTextBoundaryFinder::Grapheme, text);
|
||
int start = 0;
|
||
for (;bf.position() != -1; bf.toNextBoundary()) {
|
||
int end = bf.position();
|
||
if (end == start) {
|
||
continue;
|
||
}
|
||
if (keyword.toUpper().contains(text.mid(start, end - start).toUpper())) {
|
||
if(! boldOpenned) {
|
||
boldOpenned = true;
|
||
htmlString.append(QString("<span>"));
|
||
}
|
||
htmlString.append(FileUtils::escapeHtml(text.mid(start, end - start)));
|
||
} else {
|
||
if(boldOpenned) {
|
||
boldOpenned = false;
|
||
htmlString.append(QString("</span>"));
|
||
}
|
||
htmlString.append(FileUtils::escapeHtml(text.mid(start, end - start)));
|
||
}
|
||
start = end;
|
||
}
|
||
|
||
htmlString.replace("\n", "<br />");//替换换行符
|
||
return "<pre>" + htmlString + "</pre>";
|
||
}
|
||
|
||
QString FileUtils::setAllTextBold(const QString &name)
|
||
{
|
||
return QString("<h3 style=\"font-weight:normal;\"><pre>%1</pre></h3>").arg(escapeHtml(name));
|
||
}
|
||
|
||
QString FileUtils::wrapData(QLabel *p_label, const QString &text)
|
||
{
|
||
QString wrapText = text;
|
||
|
||
QFontMetrics fontMetrics = p_label->fontMetrics();
|
||
int textSize = fontMetrics.horizontalAdvance(wrapText);
|
||
|
||
if(textSize > LABEL_MAX_WIDTH){
|
||
int lastIndex = 0;
|
||
int count = 0;
|
||
|
||
for(int i = lastIndex; i < wrapText.length(); i++) {
|
||
|
||
if(fontMetrics.horizontalAdvance(wrapText.mid(lastIndex, i - lastIndex)) == LABEL_MAX_WIDTH) {
|
||
lastIndex = i;
|
||
wrapText.insert(i, '\n');
|
||
count++;
|
||
} else if(fontMetrics.horizontalAdvance(wrapText.mid(lastIndex, i - lastIndex)) > LABEL_MAX_WIDTH) {
|
||
lastIndex = i;
|
||
wrapText.insert(i - 1, '\n');
|
||
count++;
|
||
} else {
|
||
continue;
|
||
}
|
||
|
||
if(count == 2){
|
||
break;
|
||
}
|
||
}
|
||
}
|
||
return wrapText;
|
||
}
|
||
|
||
qreal FileUtils::horizontalAdvanceContainsKeyword(const QString &content, const QString &keyword)
|
||
{
|
||
QFont boldFont(qApp->font().family());
|
||
boldFont.setPointSizeF(qApp->font().pointSizeF() + 2);
|
||
boldFont.setWeight(QFont::Bold);
|
||
QFontMetricsF boldMetricsF(boldFont);
|
||
|
||
QFont font(qApp->font().family());
|
||
font.setPointSizeF(qApp->font().pointSizeF());
|
||
QFontMetricsF fontMetricsF(font);
|
||
|
||
QTextBoundaryFinder fm(QTextBoundaryFinder::Grapheme, content);
|
||
int start = 0;
|
||
|
||
qreal contentSize = 0;
|
||
int boldLength = 0;
|
||
int normalLength = 0;
|
||
|
||
for (;fm.position() != -1;fm.toNextBoundary()) {
|
||
int end = fm.position();
|
||
if (end == start) {
|
||
continue;
|
||
}
|
||
QString letter = content.mid(start, end - start);
|
||
|
||
if (keyword.toUpper().contains(letter.toUpper())) {
|
||
if (normalLength) {
|
||
contentSize += fontMetricsF.horizontalAdvance(content.mid(start - normalLength, normalLength));
|
||
normalLength = 0;
|
||
}
|
||
boldLength += (end - start);
|
||
} else {
|
||
if (boldLength) {
|
||
contentSize += boldMetricsF.horizontalAdvance(content.mid(start - boldLength, boldLength));
|
||
boldLength = 0;
|
||
}
|
||
normalLength += (end - start);
|
||
}
|
||
start = end;
|
||
}
|
||
|
||
if (boldLength) {
|
||
contentSize += boldMetricsF.horizontalAdvance(content.right(boldLength));
|
||
}
|
||
if (normalLength) {
|
||
contentSize += fontMetricsF.horizontalAdvance(content.right(normalLength));
|
||
}
|
||
return contentSize;
|
||
}
|
||
|
||
/**
|
||
* uof1.0解析
|
||
* 参考规范：GB/T 20916-2007
|
||
* 1.文字处理
|
||
* 2.电子表格
|
||
* 3.演示文稿
|
||
* ppt的内容存放在对象集中，
|
||
* 可以通过演示文稿-主体-幻灯片集-幻灯片下的锚点属性获取引用了哪些内容：
|
||
* <uof:锚点 uof:图形引用="OBJ16"/>
|
||
* 目标：文本串
|
||
*/
|
||
void FileUtils::getUOFTextContent(const QString &path, QString &textContent)
|
||
{
|
||
QFileInfo info(path);
|
||
if (!info.exists() || info.isDir()) {
|
||
return;
|
||
}
|
||
|
||
QFile file(path);
|
||
if (!file.open(QIODevice::ReadOnly)) {
|
||
return;
|
||
}
|
||
|
||
QDomDocument doc;
|
||
if (!doc.setContent(&file)) {
|
||
file.close();
|
||
return;
|
||
}
|
||
file.close();
|
||
|
||
bool isPPT = false;
|
||
QDomElement rootElem = doc.documentElement();
|
||
QDomNode node = rootElem.firstChild();
|
||
while (!node.isNull()) {
|
||
QDomElement e = node.toElement();
|
||
if (!e.isNull() && e.tagName() == "uof:演示文稿") {
|
||
isPPT = true;
|
||
break;
|
||
}
|
||
node = node.nextSibling();
|
||
}
|
||
|
||
//单独处理pdf文档
|
||
if (isPPT) {
|
||
qDebug() << path << "is PPT";
|
||
processUOFPPT(doc, textContent);
|
||
return;
|
||
}
|
||
|
||
file.open(QIODevice::ReadOnly);
|
||
QXmlStreamReader reader(&file);
|
||
while (!reader.atEnd()) {
|
||
//适用于文字处理与电子表格
|
||
if (reader.readNextStartElement() && reader.name().toString() == "文本串") {
|
||
textContent.append(reader.readElementText().replace("\n", "").replace("\r", " "));
|
||
if (textContent.length() >= MAX_CONTENT_LENGTH / 3) {
|
||
break;
|
||
}
|
||
}
|
||
}
|
||
|
||
file.close();
|
||
}
|
||
|
||
|
||
|
||
|
||
|
||
/**
|
||
* uof2.0解析
|
||
* @brief 参考规范文档 https://www.doc88.com/p-9089133923912.html 或 GJB/Z 165-2012
|
||
* ppt文档的内容存放在graphics.xml中，需要先解析content中的引用再解析graphics内容
|
||
* @param path
|
||
* @param textContent
|
||
*/
|
||
void FileUtils::getUOF2TextContent(const QString &path, QString &textContent)
|
||
{
|
||
QFileInfo info = QFileInfo(path);
|
||
if (!info.exists() || info.isDir())
|
||
return;
|
||
|
||
QuaZip file(path);
|
||
if (!file.open(QuaZip::mdUnzip))
|
||
return;
|
||
|
||
if (!file.setCurrentFile("content.xml")) {
|
||
return;
|
||
}
|
||
|
||
QuaZipFile fileR(&file);
|
||
if (!fileR.open(QIODevice::ReadOnly)) {
|
||
return;
|
||
}
|
||
|
||
QXmlStreamReader reader(&fileR);
|
||
|
||
while (!reader.atEnd()) {
|
||
if (reader.readNextStartElement() && reader.name().toString() == "文本串_415B") {
|
||
textContent.append(reader.readElementText().replace("\n", "").replace("\r", " "));
|
||
if (textContent.length() >= MAX_CONTENT_LENGTH / 3) {
|
||
break;
|
||
}
|
||
}
|
||
}
|
||
|
||
fileR.close();
|
||
file.close();
|
||
}
|
||
|
||
void FileUtils::getUOF2PPTContent(const QString &path, QString &textContent)
|
||
{
|
||
QFileInfo info = QFileInfo(path);
|
||
if (!info.exists() || info.isDir())
|
||
return;
|
||
|
||
QuaZip zipFile(path);
|
||
QDomDocument doc;
|
||
if (!loadZipFileToDoc(zipFile, doc, "content.xml")) {
|
||
return;
|
||
}
|
||
|
||
QDomElement rootElem = doc.documentElement();
|
||
QList<QDomElement> nodes;
|
||
QQueue<QString> names; //每个节点的名称
|
||
names << "演:幻灯片集_6C0E" << "演:幻灯片_6C0F";
|
||
findNodes(rootElem, names, nodes);
|
||
|
||
if (nodes.empty()) {
|
||
return;
|
||
}
|
||
|
||
QStringList attrs;
|
||
for (const auto &node : nodes) {
|
||
names.clear();
|
||
names << "uof:锚点_C644";
|
||
findNodeAttr(node, names, "图形引用_C62E", attrs);
|
||
}
|
||
|
||
if (attrs.empty()) {
|
||
return;
|
||
}
|
||
|
||
if (!loadZipFileToDoc(zipFile, doc, "graphics.xml")) {
|
||
return;
|
||
}
|
||
|
||
nodes.clear();
|
||
names.clear();
|
||
names << "图:图形_8062";
|
||
rootElem = doc.documentElement();
|
||
findNodesByAttr(rootElem, names, nodes, "标识符_804B", attrs);
|
||
|
||
QList<QDomElement> nodes416B; //字:段落_416B
|
||
for (const auto &node : nodes) {
|
||
names.clear();
|
||
names << "图:文本_803C" << "图:内容_8043" << "字:段落_416B";
|
||
findNodes(node, names, nodes416B);
|
||
}
|
||
|
||
nodes.clear();
|
||
for (const auto &node : nodes416B) {
|
||
names.clear();
|
||
names << "字:句_419D";
|
||
findNodes(node, names, nodes); //所有的 字:句_419D
|
||
}
|
||
|
||
for (const auto &node : nodes) {
|
||
names.clear();
|
||
names << "字:文本串_415B";
|
||
if (findNodeText(node, names, textContent)) {
|
||
break;
|
||
}
|
||
}
|
||
}
|
||
|
||
|
||
/**
|
||
* OFD文件解析
|
||
* @brief 参考： GB/T 33190-2016
|
||
* @param path
|
||
* @param textContent
|
||
*/
|
||
void FileUtils::getOFDTextContent(const QString &path, QString &textContent)
|
||
{
|
||
QFileInfo info = QFileInfo(path);
|
||
if (!info.exists() || info.isDir())
|
||
return;
|
||
|
||
QuaZip zipfile(path);
|
||
if (!zipfile.open(QuaZip::mdUnzip))
|
||
return;
|
||
|
||
// GB/T 33190-2016规范定义可以存在多个Doc_x目录，暂时只取第一个目录的内容
|
||
QString prefix("Doc_0/Pages/");
|
||
QStringList fileList;
|
||
for (const auto &file: zipfile.getFileNameList()) {
|
||
if (file.startsWith(prefix)) {
|
||
fileList << file;
|
||
}
|
||
}
|
||
|
||
for (int i = 0; i < fileList.count(); ++i) {
|
||
QString filename = prefix + "Page_" + QString::number(i) + "/Content.xml";
|
||
if (!zipfile.setCurrentFile(filename)) {
|
||
continue;
|
||
}
|
||
|
||
QuaZipFile fileR(&zipfile);
|
||
fileR.open(QIODevice::ReadOnly);
|
||
QXmlStreamReader reader(&fileR);
|
||
|
||
while (!reader.atEnd()) {
|
||
if (reader.readNextStartElement() && reader.name().toString() == "TextCode") {
|
||
textContent.append(reader.readElementText().replace("\n", "").replace("\r", " "));
|
||
if (textContent.length() >= MAX_CONTENT_LENGTH / 3) {
|
||
fileR.close();
|
||
zipfile.close();
|
||
return;
|
||
}
|
||
}
|
||
}
|
||
|
||
fileR.close();
|
||
}
|
||
|
||
zipfile.close();
|
||
}
|
||
|
||
QString FileUtils::getSnippetWithoutKeyword(const QString &content, int lineCount) {
|
||
QString snippet;
|
||
int numOfLine = 0;
|
||
QFont font(qApp->font().family());
|
||
font.setPointSizeF(qApp->font().pointSizeF());
|
||
QFontMetricsF fontMetricsF(font);
|
||
|
||
qreal length = 0;
|
||
int wordCount = 0;
|
||
int boundaryStart = 0;
|
||
int boundaryEnd = 0;
|
||
QTextBoundaryFinder fm(QTextBoundaryFinder::Grapheme, content);
|
||
|
||
for(;fm.position() != -1;fm.toNextBoundary()) {
|
||
boundaryEnd = fm.position();
|
||
if (boundaryEnd == boundaryStart) {
|
||
continue;
|
||
}
|
||
if (numOfLine == lineCount) {
|
||
break;
|
||
}
|
||
QString word = content.mid(boundaryStart, boundaryEnd - boundaryStart);
|
||
wordCount += boundaryEnd - boundaryStart;
|
||
length = fontMetricsF.horizontalAdvance(content.mid(boundaryEnd - wordCount, wordCount));
|
||
|
||
if (length >= LABEL_MAX_WIDTH || word == "\n") {
|
||
if (word == "\n") {
|
||
boundaryStart = boundaryEnd;
|
||
} else if (length > LABEL_MAX_WIDTH) {
|
||
fm.toPreviousBoundary();
|
||
} else {
|
||
boundaryStart = boundaryEnd;
|
||
snippet.append(word);
|
||
}
|
||
snippet.append("\n");
|
||
|
||
numOfLine++;
|
||
if (numOfLine == lineCount) {
|
||
qreal distance = 1;//最后一位必然是\n
|
||
qreal wordSize = 0;
|
||
if (!(word == "\n" && length < LABEL_MAX_WIDTH)) {
|
||
if (length > LABEL_MAX_WIDTH) {
|
||
boundaryEnd = boundaryStart;
|
||
}
|
||
while (wordSize < fontMetricsF.horizontalAdvance("…")) {
|
||
boundaryStart = fm.position();
|
||
|
||
wordSize += fontMetricsF.horizontalAdvance(content.mid(boundaryStart, boundaryEnd - boundaryStart));
|
||
distance += (boundaryEnd - boundaryStart);
|
||
boundaryEnd = boundaryStart;
|
||
fm.toPreviousBoundary();
|
||
}
|
||
}
|
||
snippet = snippet.left(snippet.size() - distance);
|
||
snippet.append("…");
|
||
break;
|
||
}
|
||
length = 0;
|
||
wordCount = 0;
|
||
continue;
|
||
}
|
||
snippet.append(word);
|
||
boundaryStart = boundaryEnd;
|
||
}
|
||
return snippet;
|
||
}
|