plugin supporting

mirai-console/src/main/kotlin/net/mamoe/mirai/MiraiConsole.java

@@ -16,4 +16,5 @@ public class MiraiConsole {
     public void log(Object o){
         System.out.println(o);
     }
+
 }

mirai-console/src/main/kotlin/net/mamoe/mirai/plugin/PluginBase.kt

@@ -0,0 +1,199 @@
+package net.mamoe.mirai.plugin
+
+import net.mamoe.mirai.utils.DefaultLogger
+import java.io.File
+import java.lang.Exception
+import java.nio.charset.Charset
+import java.util.jar.JarFile
+import kotlin.math.log
+
+
+abstract class PluginBase{
+
+    open fun onLoad(){
+
+    }
+
+    open fun onEnable(){
+
+    }
+
+    open fun onDisable(){
+
+    }
+
+    fun getPluginManager():PluginManager{
+        return PluginManager
+    }
+
+
+}
+
+class PluginDescription(
+    val pluginName:String,
+    val pluginAuthor:String,
+    val pluginBasePath: String,
+    val pluginVersion: String,
+    val pluginInfo:String,
+    val depends: List<String>,//插件的依赖
+    //internal
+    var loaded:Boolean = false,
+    var noCircularDepend :Boolean = true
+    )
+
+{
+
+    companion object{
+        fun readFromContent(content_:String):PluginDescription{
+            val content = content_.split("\n")
+
+            var name = "Plugin"
+            var author = "Unknown"
+            var basePath = "net.mamoe.mirai.PluginMain"
+            var info = "Unknown"
+            var version = "1.0.0"
+            val depends = mutableListOf<String>();
+
+            content.forEach{
+                val line = it.trim()
+                val lowercaseLine = line.toLowerCase()
+                if(it.contains(":")) {
+                    when{
+                        lowercaseLine.startsWith("name") -> {
+                            name = line.substringAfter(":").trim()
+                        }
+                        lowercaseLine.startsWith("author") -> {
+                            author = line.substringAfter(":").trim()
+                        }
+                        lowercaseLine.startsWith("info") || lowercaseLine.startsWith("information") -> {
+                            info = line.substringAfter(":").trim()
+                        }
+                        lowercaseLine.startsWith("path") || lowercaseLine.startsWith("basepath") -> {
+                            basePath = line.substringAfter(":").trim()
+                        }
+                        lowercaseLine.startsWith("version") || lowercaseLine.startsWith("ver") -> {
+                            version = line.substringAfter(":").trim()
+                        }
+                    }
+                }else if(line.startsWith("-")){
+                    depends.add(line.substringAfter("-").trim())
+                }
+            }
+            return PluginDescription(name,author,basePath,version,info,depends)
+        }
+    }
+}
+
+
+object PluginManager{
+    private val pluginsPath = System.getProperty("user.dir") + "/plugins/".replace("//","/").also {
+        File(it).mkdirs()
+    }
+
+    private val logger = DefaultLogger("Plugin Manager")
+
+    //已完成加载的
+    private val nameToDescriptionMap: Map<String, PluginDescription> = mutableMapOf()
+    private val pluginBaseToDescriptionMap: Map<PluginBase, PluginDescription> = mutableMapOf()
+
+
+    fun getPluginDataFolder(plugin: PluginBase):File{
+        val name = (pluginBaseToDescriptionMap[plugin] ?: error("Plugin not loaded")).pluginName
+        return File(pluginsPath + name).also {
+            it.mkdirs()
+        }
+    }
+
+
+    /**
+     * 尝试加载全部插件
+     */
+    fun loadPlugins(){
+        val pluginsFound: MutableMap<String, PluginDescription> = mutableMapOf()
+        val pluginsLocation: MutableMap<String, JarFile> = mutableMapOf()
+
+        File(pluginsPath).listFiles()?.forEach { file ->
+            if (file != null) {
+                if (file.extension == "jar") {
+                    val jar = JarFile(file)
+                    val pluginYml = jar.entries().asIterator().asSequence().filter { it.name.toLowerCase().contains("resource/plugin.yml") }.firstOrNull()
+                    if (pluginYml == null) {
+                        logger.info("plugin.yml not found in jar " + jar.name + ", it will not be consider as a Plugin")
+                    } else {
+                        val description = PluginDescription.readFromContent(pluginYml.extra.toString())
+                        pluginsFound[description.pluginName] = description
+                        pluginsLocation[description.pluginName] = jar
+                    }
+                }
+            }
+        }
+
+        fun checkNoCircularDepends (target:PluginDescription, needDepends: List<String>,existDepends: MutableList<String>){
+
+            if(!target.noCircularDepend){
+                return
+            }
+
+            if(needDepends.any { existDepends.contains(it) }){
+                target.noCircularDepend = false
+            }
+
+            existDepends.addAll(needDepends)
+            existDepends.add(target.pluginName)
+
+            needDepends.forEach{
+                if(pluginsFound.containsKey(it)){
+                    checkNoCircularDepends(pluginsFound[it]!!, pluginsFound[it]!!.depends, existDepends)
+                }
+            }
+        }
+
+
+        pluginsFound.values.forEach {
+            checkNoCircularDepends(it,it.depends, mutableListOf())
+        }
+
+        //load
+
+
+        fun loadPlugin(description: PluginDescription):Boolean{
+            if(!description.noCircularDepend){
+                return false.also {
+                    logger.error("Failed to load plugin " + description.pluginName + " because it has circular dependency")
+                }
+            }
+
+            //load depends first
+            description.depends.forEach{
+                if(!pluginsFound.containsKey(it)){
+                    return false.also { _ ->
+                        logger.error("Failed to load plugin " + description.pluginName + " because it need " + it + " as dependency")
+                    }
+                }
+                val depend = pluginsFound[it]!!
+                //还没有加载
+                if(!depend.loaded) {
+                    if (!loadPlugin(pluginsFound[it]!!)) {
+                        return false.also { _ ->
+                            logger.error("Failed to load plugin " + description.pluginName + " because " + it + " as dependency failed to load")
+                        }
+                    }
+                }
+            }
+            //在这里所有的depends都已经加载了
+
+            //loadPlugin
+
+        }
+
+
+        pluginsFound.values.forEach{ loadPlugin(it) }
+    }
+
+
+
+
+}
+
+
+