Fixed Some Bugs and Add the Multi-Thread Download Module

main.py

@@ -1,10 +1,29 @@
 #------------------#
-import os,requests,json,time,sys,psutil,string,platform,glob,getpass,shutil,hashlib,random,subprocess,math,zipfile
+import os,requests,json,time,sys,psutil,string,platform,glob,getpass,shutil,hashlib,random,subprocess,math,zipfile,threading
 #------------------#
+
+class MultiThreadDownload(threading.Thread):
+    '''class for Multi-Thread Download'''
+    def __init__(self,url,startpos,endpos,f):
+        super(MultiThreadDownload,self).__init__()
+        self.url = url
+        self.startpos = startpos
+        self.endpos = endpos
+        self.fd = f
+
+    def download(self):
+        headers = {"Range":"bytes=%s-%s"%(self.startpos,self.endpos)}
+        res = requests.get(self.url,headers=headers)
+        self.fd.seek(self.startpos)
+        self.fd.write(res.content)
+
+    def run(self):
+        self.download()
+
 class GMCLCore(object):
-    def __int__(self,LauncherName="GMCLCore",LauncherVersion="A0.2.0",AuthWay="offline",Account="Steve",Password="",GamePath=".minecraft",Memory="1GB",Version="",Java="",DownloadFrom="",DownloadTo=""):
+    '''The Main Class of the Launcher Core'''
-        self.__LauncherName=LauncherName
+    '''AuthWay="offline",Account="Steve",Password="",GamePath=".minecraft",Memory="1GB",Version="",Java=""'''
-        self.__LauncherVersion=LauncherVersion
+    '''
         self.GetAuthWay(AuthWay)
         self.GetAccoutn(Account)
         self.__Password=Password
@@ -12,7 +31,10 @@ class GMCLCore(object):
         self.GetMemory(Memory)
         self.__Version=Version
         self.__Java=Java
-        self.Download(DownloadFrom,DownloadTo)
+    '''
+    def __init__(self,LauncherName="GMCLCore",LauncherVersion="A0.2.0"):
+        self.__LauncherName=LauncherName
+        self.__LauncherVersion=LauncherVersion
         self.__UserAgent={'User-Agent':LauncherName+'/'+LauncherVersion+' ((GMCL Core Alpha 0.2.0;Alpha))'}
     def GetAuthWay(self,AuthWay):
         if(AuthWay=="offline"):
@@ -68,7 +90,7 @@ class GMCLCore(object):
         self.__ID=Account
         self.__UUID=self.GetUUID(Account)
         self.__Token=""
-    def GetJavaPaht(self):
+    def GetJavaPath(self):
         if(platform.system()=="Windows"):
             path="C:/"
         elif(platform.system()=="Linux"):
@@ -82,10 +104,45 @@ class GMCLCore(object):
                 if("javaw.exe" in os.path.split(FullDir)[1]):
                     return FullDir
                     i+=1
-            if(i=1):
+            if(i==1):
                 break
-    def Download(self,DownloadFrom,DownloadTo):
+    def SetJavaPath(self,path):
-        if(DownloadFrom=="" or DownloadTo==""):
+        if(path==None):
-            pass
+            return "Error:Wrong local address for java."
         else:
+            self.__JAVA=path
+    def Download(self,DownloadFrom,DownloadTo,ThreadNum=3):
+        if(DownloadFrom=="" or DownloadTo==""):
+            return "Error:Wrong online address or local address for download."
+        else:
+            url = DownloadFrom
+            filename = DownloadTo
+            filesize = int(requests.head(url).headers['Content-Length'])
 
+            threadnum = ThreadNum
+            threading.BoundedSemaphore(threadnum)
+            step = filesize // threadnum
+            mtd_list = []
+            start = 0
+            end = -1
+
+            tempf = open(filename,'w')
+            tempf.close()
+            with open(filename,'rb+') as  f:
+                fileno = f.fileno()
+                while end < filesize -1:
+                    start = end +1
+                    end = start + step -1
+                    if end > filesize:
+                        end = filesize
+                    dup = os.dup(fileno)
+                    fd = os.fdopen(dup,'rb+',-1)
+                    t = MultiThreadDownload(url,start,end,fd)
+                    t.start()
+                    mtd_list.append(t)
+
+                for i in  mtd_list:
+                    i.join()
+
+launcher=GMCLCore("AAA","V250")
+launcher.Download("http://mirrors.163.com/centos/8.2.2004/isos/x86_64/CentOS-8.2.2004-x86_64-boot.iso","aa.iso")