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package cn.dreampie.common.plugin.tablebind;
import com.google.common.collect.Lists;
import com.jfinal.ext.kit.Reflect;
import com.jfinal.log.Logger;
import java.io.File;
import java.io.FilenameFilter;
import java.io.IOException;
import java.net.URL;
import java.util.Enumeration;
import java.util.List;
import java.util.jar.JarEntry;
import java.util.jar.JarFile;
/**
* Created by wangrenhui on 14-4-11.
*/
public class ClassSearcherExt {
protected static final Logger LOG = Logger.getLogger(ClassSearcherExt.class);
private List includepaths = Lists.newArrayList();
@SuppressWarnings("unchecked")
private static List> extraction(Class clazz, List classFileList) {
List> classList = Lists.newArrayList();
for (String classFile : classFileList) {
Class classInFile = Reflect.on(classFile).get();
if (clazz.isAssignableFrom(classInFile) && clazz != classInFile) {
classList.add((Class) classInFile);
}
}
return classList;
}
public static ClassSearcherExt of(Class target) {
return new ClassSearcherExt(target);
}
/**
* 递归查找文件
*
* @param baseDirName 查找的文件夹路径
* @param targetFileName 需要查找的文件名
*/
private static List findFiles(String baseDirName, String targetFileName) {
/**
* 算法简述： 从某个给定的需查找的文件夹出发，搜索该文件夹的所有子文件夹及文件， 若为文件，则进行匹配，匹配成功则加入结果集，若为子文件夹，则进队列。 队列不空，重复上述操作，队列为空，程序结束，返回结果。
*/
List classFiles = Lists.newArrayList();
//判断class路径
URL baseURL = ClassSearcherExt.class.getResource(File.separator + baseDirName.replaceAll("\\.", "/"));
if (baseURL != null) {
// 得到协议的名称
String protocol = baseURL.getProtocol();
String basePath = baseURL.getFile();
// 如果是以文件的形式保存在服务器上
// if ("file".equals(protocol)) {
// } else
if ("jar".equals(protocol)) {
String[] paths = basePath.split("!/");
// 获取jar
try {
classFiles = findJarFile(paths[0].replace("file:", ""), paths[1]);
} catch (IOException e) {
e.printStackTrace();
}
} else {
classFiles = findPathFiles(basePath, targetFileName);
}
}
return classFiles;
}
/**
* 查找根目录下的文件
*
* @param baseDirName 路径
* @param targetFileName 文件匹配
* @return
*/
private static List findPathFiles(String baseDirName, String targetFileName) {
List classFiles = Lists.newArrayList();
String tempName = null;
// 判断目录是否存在
File baseDir = new File(baseDirName);
if (!baseDir.exists() || !baseDir.isDirectory()) {
LOG.error("search error：" + baseDirName + "is not a dir！");
} else {
String[] filelist = baseDir.list();
String classname = null;
String tem = null;
for (int i = 0; i < filelist.length; i++) {
File readfile = new File(baseDirName + File.separator + filelist[i]);
if (readfile.isDirectory()) {
classFiles.addAll(findPathFiles(baseDirName + File.separator + filelist[i], targetFileName));
} else {
tempName = readfile.getName();
if (ClassSearcherExt.wildcardMatch(targetFileName, tempName)) {
tem = readfile.getAbsoluteFile().toString().replaceAll("\\\\", "/");
classname = tem.substring(tem.indexOf("/classes") + "/classes".length() + 1,
tem.indexOf(".class"));
classFiles.add(classname.replaceAll("/", "."));
}
}
}
}
return classFiles;
}
/**
* 通配符匹配
*
* @param pattern 通配符模式
* @param str 待匹配的字符串 @return
* 匹配成功则返回true，否则返回false
*/
private static boolean wildcardMatch(String pattern, String str) {
int patternLength = pattern.length();
int strLength = str.length();
int strIndex = 0;
char ch;
for (int patternIndex = 0; patternIndex < patternLength; patternIndex++) {
ch = pattern.charAt(patternIndex);
if (ch == '*') {
// 通配符星号*表示可以匹配任意多个字符
while (strIndex < strLength) {
if (wildcardMatch(pattern.substring(patternIndex + 1), str.substring(strIndex))) {
return true;
}
strIndex++;
}
} else if (ch == '?') {
// 通配符问号?表示匹配任意一个字符
strIndex++;
if (strIndex > strLength) {
// 表示str中已经没有字符匹配?了。
return false;
}
} else {
if ((strIndex >= strLength) || (ch != str.charAt(strIndex))) {
return false;
}
strIndex++;
}
}
return strIndex == strLength;
}
// private String classpath = PathKit.getRootClassPath();
// private boolean includeAllJarsInLib = false;
//
// private List includeJars = Lists.newArrayList();
// private String libDir = PathKit.getWebRootPath() + File.separator + "WEB-INF" + File.separator + "lib";
private Class target;
public ClassSearcherExt(Class target) {
this.target = target;
}
// public ClassSearcherExt injars(List jars) {
// if (jars != null) {
// this.includeJars.addAll(jars);
// }
// return this;
// }
//
// public ClassSearcherExt inJars(String... jars) {
// if (jars != null) {
// for (String jar : jars) {
// this.includeJars.add(jar);
// }
// }
// return this;
// }
// public ClassSearcherExt classpath(String classpath) {
// this.classpath = classpath;
// return this;
// }
public ClassSearcherExt includepaths(String... classpaths) {
if (classpaths != null) {
for (String classpath : classpaths) {
this.includepaths.add(classpath);
}
}
return this;
}
public ClassSearcherExt includepaths(List classpaths) {
if (classpaths != null) {
for (String classpath : classpaths) {
this.includepaths.add(classpath);
}
}
return this;
}
public List> search() {
if (includepaths.size() <= 0) {
List classFileList = findPathFiles(this.getClass().getResource(File.separator).getPath(), "*.class");
// classFileList.addAll(findjarFiles(libDir, includeJars, null));
return extraction(target, classFileList);
} else {
List classFileList = Lists.newArrayList();
for (String classpath : includepaths) {
classFileList.addAll(findFiles(classpath, "*.class"));
// classFileList.addAll(findjarFiles(libDir, includeJars, null));
}
return extraction(target, classFileList);
}
}
/**
* 查找jar包中的class
*
* @param baseDirName jar路径
* @param includeJars
* @param includeJars jar文件地址 @return
*/
private List findjarFiles(String baseDirName, final List includeJars, String packageName) {
List classFiles = Lists.newArrayList();
try {
// 判断目录是否存在
File baseDir = new File(baseDirName);
if (!baseDir.exists() || !baseDir.isDirectory()) {
LOG.error("file serach error：" + baseDirName + " is not a dir！");
} else {
String[] filelist = baseDir.list(new FilenameFilter() {
@Override
public boolean accept(File dir, String name) {
return includeJars.contains(name);
}
});
for (int i = 0; i < filelist.length; i++) {
classFiles.addAll(findJarFile(baseDirName + File.separator + filelist[i], packageName));
}
}
} catch (IOException e) {
e.printStackTrace();
}
return classFiles;
}
/**
* find jar file
*
* @param filePath 文件路径
* @param packageName 包名
* @return list
* @throws IOException 文件读取异常
*/
private static List findJarFile(String filePath, String packageName) throws IOException {
List classFiles = Lists.newArrayList();
JarFile localJarFile = new JarFile(new File(filePath));
classFiles = findInJar(localJarFile, packageName);
localJarFile.close();
return classFiles;
}
private static List findInJar(JarFile localJarFile, String packageName) {
List classFiles = Lists.newArrayList();
Enumeration entries = localJarFile.entries();
while (entries.hasMoreElements()) {
JarEntry jarEntry = entries.nextElement();
String entryName = jarEntry.getName();
if (!jarEntry.isDirectory() && (packageName == null || entryName.startsWith(packageName)) && entryName.endsWith(".class")) {
String className = entryName.replaceAll("/", ".").substring(0, entryName.length() - 6);
classFiles.add(className);
}
}
return classFiles;
}
// public ClassSearcherExt includeAllJarsInLib(boolean includeAllJarsInLib) {
// this.includeAllJarsInLib = includeAllJarsInLib;
// return this;
// }
//
// public ClassSearcherExt libDir(String libDir) {
// this.libDir = libDir;
// return this;
// }
}