331 lines
8.7 KiB
C++
331 lines
8.7 KiB
C++
#include "parsebackuplist.h"
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#include <QFile>
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#include <QTextStream>
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#include <QXmlStreamReader>
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#include <QDebug>
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/*
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<?xml version='1.0'?>
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<backupList>
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<BackupPoint>
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<Comment>21-07-21 14:14:01</Comment>
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<Time>21-07-21 14:14:03</Time>
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<Uuid>{beecb746-561f-4fa1-99ba-19fb849a1ba7}</Uuid>
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<Size>24.26KB</Size>
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<State>backup finished</State>
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<Type>2</Type>
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</BackupPoint>
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</backupList>
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*/
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#define BACKUPLIST "backupList"
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#define BACKUPPOINT "BackupPoint"
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#define COMMENT "Comment"
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#define TIME "Time"
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#define UUID "Uuid"
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#define SIZE "Size"
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#define STATE "State"
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#define TYPE "Type"
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#define POSITION "Position"
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#define STATUE_BACKUP_FINESHED "backup finished"
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ParseBackupList::ParseBackupList(const QString& xmlPath)
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: m_xmlPath(xmlPath)
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{
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QFile xmlFile(m_xmlPath);
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if (!xmlFile.exists() || 0 == xmlFile.size()) {
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InitXml();
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}
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}
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/**
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* @brief 初始化xml文件
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* @return
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*/
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bool ParseBackupList::InitXml()
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{
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QFile xmlFile(m_xmlPath);
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if (!xmlFile.open(QIODevice::ReadWrite | QIODevice::Truncate))
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return false;
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QDomDocument doc;
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QDomProcessingInstruction ins = doc.createProcessingInstruction("xml", "version=\'1.0\'");
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doc.appendChild(ins);
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QDomElement root = doc.createElement(BACKUPLIST);
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doc.appendChild(root);
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QTextStream out(&xmlFile);
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doc.save(out, QDomNode::NodeType::CDATASectionNode);
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xmlFile.close();
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return true;
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}
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/**
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* @brief 校验xml格式是否正确
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* @return
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*/
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bool ParseBackupList::isXmlCorrect()
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{
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QFile xmlFile(m_xmlPath);
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if (!xmlFile.open(QIODevice::ReadOnly | QIODevice::Text)) {
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qDebug() << "Open file " << m_xmlPath << " failure";
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return false;
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}
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QXmlStreamReader reader(&xmlFile);
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while (!reader.atEnd()) {
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if (reader.isStartElement()) {
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}
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reader.readNext();
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}
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if (reader.hasError()) {
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qDebug() << "xml parse error!";
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xmlFile.close();
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return false;
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}
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xmlFile.close();
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return true;
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}
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/**
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* @brief 读取xml文件
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* @param doc
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* @return
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*/
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bool ParseBackupList::Doc_setContent(QDomDocument& doc)
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{
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QFile xmlFile(m_xmlPath);
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if (!xmlFile.open(QIODevice::ReadOnly)) {
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qDebug() << " open backuplist.xml failed!";
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return false;
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}
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QString errStr;
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int errLine;
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int errCol;
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if (!doc.setContent(&xmlFile, false, &errStr, &errLine, &errCol)) {
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qDebug() << QString("parse backuplist.xml error at line %1, column %2:%3").arg(errLine).arg(errCol).arg(errStr);
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xmlFile.close();
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return false;
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}
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xmlFile.close();
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return true;
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}
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/**
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* @brief 出厂备份修改backuplist.xml，仅保留出厂备份信息
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* @param factoryBackupUuid，出厂备份的uuid
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* @return ParseResult枚举类型
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* @author zhaominyong
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* @since 2021/06/27
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*/
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ParseBackupList::ParseResult ParseBackupList::updateForFactoryRestore(const QString& factoryBackupUuid)
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{
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QDomDocument doc;
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if (!Doc_setContent(doc))
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return XML_PARSE_ERR;
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QDomElement root = doc.documentElement();
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QDomNodeList list = root.childNodes();
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for (int i = 0; i < list.count(); i++) {
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QDomNode node = list.at(i);
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if (!node.isElement())
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continue ;
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QDomElement element = node.toElement();
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QDomNodeList nodes = element.elementsByTagName(UUID);
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if (0 < nodes.count()) {
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QDomElement uuidElement = nodes.at(0).toElement();
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QString tag = uuidElement.tagName();
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QString text = uuidElement.text();
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if (uuidElement.text() != factoryBackupUuid) {
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root.removeChild(node);
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--i;
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}
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}
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}
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QFile xmlFile(m_xmlPath);
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if (!xmlFile.open(QIODevice::WriteOnly)) {
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qDebug() << "update state failed";
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return FAIL;
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}
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QTextStream out(&xmlFile);
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doc.save(out, QDomNode::NodeType::EntityReferenceNode);
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out.flush();
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xmlFile.close();
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return SUCCESS;
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}
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/**
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* @brief 根据comment查找uuid
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* @param comment
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* @return uuid
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*/
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QString ParseBackupList::findUuidByComment(const QString& comment)
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{
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QDomDocument doc;
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if (!Doc_setContent(doc))
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return "";
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QDomElement root = doc.documentElement();
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QDomNodeList list = root.childNodes();
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for (int i = 0; i < list.count(); i++) {
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QDomNode node = list.at(i);
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if (!node.isElement())
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continue;
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QDomElement eleComment = node.firstChildElement(COMMENT);
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if (eleComment.isNull())
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continue;
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if (comment != eleComment.text())
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continue;
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QDomElement eleUuid = node.firstChildElement(UUID);
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if (eleUuid.isNull())
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return "";
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return eleUuid.text();
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}
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return "";
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}
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/**
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* @brief 根据Uuid查找备份点信息
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* @param Uuid
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* @return 备份点信息
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*/
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ParseBackupList::BackupPoint ParseBackupList::findBackupPointByUuid(const QString& Uuid)
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{
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BackupPoint backupPoint;
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QDomDocument doc;
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if (!Doc_setContent(doc))
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return backupPoint;
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QDomElement root = doc.documentElement();
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QDomNodeList list = root.childNodes();
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for (int i = 0; i < list.count(); i++) {
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QDomNode node = list.at(i);
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if (!node.isElement())
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continue;
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QDomElement eleUuid = node.firstChildElement(UUID);
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if (eleUuid.isNull() || Uuid != eleUuid.text())
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continue;
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elementNodeToBackupPoint(node.toElement(), backupPoint);
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return backupPoint;
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}
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return backupPoint;
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}
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/**
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* @brief 获取最后一次系统备份
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* @return
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*/
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ParseBackupList::BackupPoint ParseBackupList::getLastSysBackupPoint()
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{
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BackupPoint backupPoint;
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QDomDocument doc;
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if (!Doc_setContent(doc))
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return backupPoint;
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QDomElement root = doc.documentElement();
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QDomNodeList list = root.childNodes();
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for (int i = 0; i < list.count(); i++) {
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QDomNode node = list.at(i);
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if (!node.isElement())
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continue;
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QDomElement eleType = node.firstChildElement(TYPE);
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if (eleType.isNull() || (BackupType::BACKUP_SYSTEM != eleType.text().toInt() && BackupType::INC_BACKUP_SYSTEM != eleType.text().toInt()))
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continue;
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QDomElement eleState = node.firstChildElement(STATE);
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QString type = eleState.text();
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if (eleState.isNull() || eleState.text() != QString(STATUE_BACKUP_FINESHED))
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continue;
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elementNodeToBackupPoint(node.toElement(), backupPoint);
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}
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return backupPoint;
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}
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/**
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* @brief elementNode --> BackupPoint
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* @param node, QDomElement
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* @param backupPoint, BackupPoint
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*/
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void ParseBackupList::elementNodeToBackupPoint(const QDomElement& node, BackupPoint& backupPoint)
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{
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QDomElement eleUuid = node.firstChildElement(UUID);
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if (!eleUuid.isNull())
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backupPoint.m_uuid = eleUuid.text();
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QDomElement eleComment = node.firstChildElement(COMMENT);
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if (!eleComment.isNull())
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backupPoint.m_backupName = eleComment.text();
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QDomElement eleTime = node.firstChildElement(TIME);
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if (!eleTime.isNull())
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backupPoint.m_time = eleTime.text();
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QDomElement eleSize = node.firstChildElement(SIZE);
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if (!eleSize.isNull())
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backupPoint.m_size = eleSize.text();
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QDomElement eleState = node.firstChildElement(STATE);
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if (!eleState.isNull())
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backupPoint.m_state = eleState.text();
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QDomElement eleType = node.firstChildElement(TYPE);
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if (!eleType.isNull())
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backupPoint.m_type = eleType.text().toInt();
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QDomElement elePosition = node.firstChildElement(POSITION);
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if (!elePosition.isNull())
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backupPoint.m_iPosition = elePosition.text().toInt();
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}
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/**
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* @brief backupPoint --> ElementNode
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* @param backupPoint, BackupPoint
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* @param node, QDomElement
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*/
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void ParseBackupList::backupPointToElementNode(const BackupPoint& backupPoint, QDomElement& node)
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{
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node.appendChild(createTextElement(COMMENT, backupPoint.m_backupName));
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node.appendChild(createTextElement(TIME, backupPoint.m_time));
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node.appendChild(createTextElement(UUID, backupPoint.m_uuid));
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node.appendChild(createTextElement(SIZE, backupPoint.m_size));
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node.appendChild(createTextElement(STATE, backupPoint.m_state));
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node.appendChild(createTextElement(TYPE, QString::number(backupPoint.m_type)));
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node.appendChild(createTextElement(POSITION, QString::number(backupPoint.m_iPosition)));
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}
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/**
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* @brief createTextElement
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* @param tagName
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* @param text
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* @return <tagName>text</tagName>
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*/
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QDomElement ParseBackupList::createTextElement(const QString& tagName, const QString& text)
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{
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QDomElement node;
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node.setTagName(tagName);
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QDomText textNode;
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textNode.setData(text);
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node.appendChild(textNode);
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return node;
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}
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