package org.douyu.core;
import java.io.File;
import java.net.MalformedURLException;
import java.net.URL;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.LinkedHashMap;
import java.util.List;
import java.util.Map;
import douyu.mvc.ViewException;
import douyu.mvc.ViewManagerProvider;
/**
*
* @author ZHH
*
*/
public class Config {
/**
* 应用名
*/
public String appName;
/**
* 对应javac的-encoding参数
*/
public String javacEncoding;
//警告: srcDir目录和classesDir目录不能都放class文件，如果是由两个编译器编译的，时间不同，会导致一直重复编译
/**
* java源文件目录
*/
public String srcDir;
/**
* 存放编译后的类文件或自动生成的java源文件
*/
public String classesDir;
/**
* vm、ftl文件目录，如果没有设置，则默认是srcDir
*/
//public String viewsDir;
/**
* 在开发模式下，
* java源文件修改时会重新编译并重新加载(通常是替换ClassLoader)
*/
public boolean isDevMode = true;
public ResourceLoader loader;
/**
* 应用类路径
*/
public URL[] appClassPath = new URL[0];
public void addClassPath(String path) throws MalformedURLException {
if (path != null) {
URL url = new File(path).toURI().toURL();
URL[] urls = new URL[appClassPath.length + 1];
System.arraycopy(appClassPath, 0, urls, 0, appClassPath.length);
urls[appClassPath.length] = url;
appClassPath = urls;
}
}
private ViewManagerProvider defaultViewManagerProvider;
private String defaultViewManagerProviderClassName;
//key: ViewManagerProvider的类名
private Map<String, ViewManagerProvider> viewManagerProviders = new HashMap<String, ViewManagerProvider>();
//key: 视图文件扩展名
//value: ViewManagerProvider的类名
private Map<String, String> extensionMap = new LinkedHashMap<String, String>();
public void setDefaultViewManagerProvider(ViewManagerProvider defaultViewManagerProvider) {
this.defaultViewManagerProvider = defaultViewManagerProvider;
}
public ViewManagerProvider getDefaultViewManagerProvider() {
if (defaultViewManagerProvider == null && defaultViewManagerProviderClassName != null) {
try {
this.defaultViewManagerProvider = (ViewManagerProvider) loader.loadClass(defaultViewManagerProviderClassName)
.newInstance();
} catch (Exception e) {
throw new ViewException("failed to getDefaultViewManagerProvider: " + e);
}
}
return defaultViewManagerProvider;
}
public List<ViewManagerProvider> getViewManagerProviders() {
List<ViewManagerProvider> list = new ArrayList<ViewManagerProvider>(extensionMap.size());
for (String extension : extensionMap.keySet()) {
list.add(getViewManagerProvider(extension));
}
return list;
}
/**
*
* @param extension
* @return 返回与extension相关的ViewManagerProvider，如果没有找到，返回默认的ViewManagerProvider
*/
public ViewManagerProvider getViewManagerProvider(String extension) {
String className = extensionMap.get(extension);
if (className == null)
return getDefaultViewManagerProvider();
ViewManagerProvider vmp = viewManagerProviders.get(className);
if (vmp == null) {
try {
vmp = (ViewManagerProvider) loader.loadClass(className).newInstance();
viewManagerProviders.put(className, vmp);
} catch (Exception e) {
throw new ViewException("failed to getViewManagerProvider for extension: " + extension, e);
}
}
return vmp;
}
//如:"org.douyu.plugins.velocity.VelocityViewManagerProvider=vm; org.douyu.plugins.freemarker.FreeMarkerViewManagerProvider=ftl";
public void setViewManagerProviderConfig(String viewManagerProviderConfig) {
if (viewManagerProviderConfig != null) {
for (String m : viewManagerProviderConfig.split(";")) {
String[] n = m.trim().split("=");
if (n.length != 2) {
throw new IllegalArgumentException(viewManagerProviderConfig
+ "(usage: classNameA=extensionA|extensionB;classNameB=extensionC|extensionD)");
}
String className = n[0].trim();
//默认是第一个
if (defaultViewManagerProviderClassName == null)
defaultViewManagerProviderClassName = className;
for (String extension : n[1].split("\\|")) {
extensionMap.put(extension.trim(), className);
}
}
}
}
}