package com.netsdk.lib;
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import org.xml.sax.Attributes;
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import org.xml.sax.SAXException;
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import org.xml.sax.helpers.DefaultHandler;
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import javax.xml.parsers.ParserConfigurationException;
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import javax.xml.parsers.SAXParser;
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import javax.xml.parsers.SAXParserFactory;
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import java.io.IOException;
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import java.io.InputStream;
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import java.util.*;
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/**
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* @author 47081
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* @version 1.0
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* @description
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* @date 2021/3/10
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*/
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public class DynamicParseUtil {
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private DynamicLibParseHandler handler;
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private SAXParserFactory saxParserFactory;
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private SAXParser saxParser;
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/**
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* 适配各系统动态库名称大小写不同,以及lib前缀造成的找不到库的问题
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*
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* @param currentSystem 当前系统:win64,win32,linux64,linux32,mac64
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* @param libName 动态库名称
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* @return
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*/
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public String compareLibName(String currentSystem, String libName) {
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String dynamicLibName = libName;
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List<String> libs = handler.getLibsBySystem(currentSystem);
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if (currentSystem.toLowerCase().contains("win")) {
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return findLibs(libs, libName);
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}
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if (libName.startsWith("lib")) {
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dynamicLibName = libName.substring(3);
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}
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return findLibs(libs, dynamicLibName);
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}
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private String findLibs(List<String> libs, String libName) {
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for (String lib : libs) {
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if (libName.equalsIgnoreCase(lib)) {
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return lib;
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}
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}
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return "";
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}
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public List<String> getLibsSystem(String system) {
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return handler.getLibsBySystem(system);
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}
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private DynamicParseUtil() throws ParserConfigurationException {
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// 获取SAX分析器的工厂实例,专门负责创建SAXParser分析器
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saxParserFactory = SAXParserFactory.newInstance();
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// 获取SAXParser分析器的实例
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try {
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saxParser = saxParserFactory.newSAXParser();
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handler = new DynamicLibParseHandler();
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} catch (Exception e) {
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e.printStackTrace();
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}
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}
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public DynamicParseUtil(InputStream inputSteam)
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throws ParserConfigurationException, IOException, SAXException {
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this();
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saxParser.parse(inputSteam, handler);
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}
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/** xml解析handler */
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private class DynamicLibParseHandler extends DefaultHandler {
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private HashMap<String, List<String>> dynamics = new HashMap<String, List<String>>();
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private List<String> systems =
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Arrays.asList("win64", "win32", "linux64", "linux32", "mac64", "linuxARM");
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private String currentDynamicSystem;
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private List<String> libs;
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public List<String> getLibsBySystem(String system) {
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return dynamics.get(system);
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}
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@Override
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public void startDocument() throws SAXException {
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super.startDocument();
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}
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@Override
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public void startElement(String uri, String localName, String qName, Attributes attributes)
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throws SAXException {
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super.startElement(uri, localName, qName, attributes);
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if (systems.contains(qName)) {
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currentDynamicSystem = qName;
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if (libs == null) {
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libs = new ArrayList<String>();
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}
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}
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}
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@Override
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public void endElement(String uri, String localName, String qName) throws SAXException {
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super.endElement(uri, localName, qName);
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if (systems.contains(qName)) {
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// 保存到hashmap中
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dynamics.put(currentDynamicSystem, libs);
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// 清除libs
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libs = null;
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}
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}
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@Override
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public void characters(char[] ch, int start, int length) throws SAXException {
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super.characters(ch, start, length);
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String lib = new String(ch, start, length);
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if (!lib.trim().isEmpty()) {
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libs.add(lib);
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}
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}
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}
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}
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