Initial commit

.gitattributes

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+# Auto detect text files and perform LF normalization
+* text=auto

JDKSwitcher_forWindows.cpp

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+#include <io.h>
+#include <string>
+#include <vector>
+#include <fstream>
+#include <iostream>
+#include <bits/stdc++.h>
+#include <conio.h>
+#include <stdlib.h>
+#include <windows.h>
+#include <fstream>
+
+std::string* getJava(){
+	return new std::string(getenv("JAVA_HOME"));
+}
+std::string* quoteString(std::string* str){
+	str->insert(0,1,'\"');
+	str->insert(str->length(),1,'\"');
+	return str;
+}
+void setJava(char* var){
+	std::string* cmd=new std::string("");//empty
+	std::string* junk1;
+	cmd->append("setx ");
+	cmd->append("\"JAVA_HOME\" ");
+	junk1 = quoteString(new std::string(var));
+	cmd->append(junk1->c_str());
+	//cmd->append(" /U ");
+	//cmd->append(username);
+	const char * cmdConstant=cmd->c_str();
+	system(cmdConstant);
+	delete cmd;
+	delete junk1; 
+}
+void readFromConfig(std::vector<std::string>& jdks){
+	std::fstream config("jdk.cfg");
+	if(config.good()){
+		std::string line; 
+		while(std::getline(config,line)){
+			jdks.push_back(line);
+		}
+	}else{
+		config<<"";//create;
+	}
+}
+void getAllFiles(std::string path, std::vector<std::string>& files) 
+{
+	// 文件句柄
+	long hFile = 0;
+	// 文件信息
+	struct _finddata_t fileinfo;  
+
+	std::string p;
+
+	if ((hFile = _findfirst(p.assign(path).append("\\*").c_str(), &fileinfo)) != -1) {
+		do {
+			// 保存文件的全路径
+			files.push_back(p.assign(path).append("\\").append(fileinfo.name));
+
+		   } while (_findnext(hFile, &fileinfo) == 0);  //寻找下一个，成功返回0，否则-1
+
+		_findclose(hFile);
+	}
+}
+void readFromProgram(std::vector<std::string>& jdks){
+	std::vector<std::string> s;
+	getAllFiles("C:\\Program Files\\Java",s);
+	std::vector<std::string>::iterator i;
+	for(i=s.begin();i!=s.end();++i){
+		if((*i).find("jdk1.8",0)!=std::string::npos || (*i).find("jdk-1.8",0)!=std::string::npos || ((*i).find("j")!=std::string::npos )){
+			jdks.push_back(*i);
+		}
+	}
+}
+#define white 0
+#define red 1
+#define blue 2
+#define yellow 3
+#define green 4
+#define purple 5
+#define cyan 6
+#define gray 7
+#define black 8
+#define DEBUG 0
+#define LL long long
+int getawaw(){
+	std::cout<<"按任意键继续"<<std::endl;
+	char a=_getch();
+}
+void color(LL n){
+    if (n==0) SetConsoleTextAttribute(GetStdHandle(STD_OUTPUT_HANDLE),FOREGROUND_INTENSITY|FOREGROUND_GREEN|FOREGROUND_BLUE|FOREGROUND_RED);
+    if (n==1) SetConsoleTextAttribute(GetStdHandle(STD_OUTPUT_HANDLE),FOREGROUND_INTENSITY|FOREGROUND_RED);
+    if (n==2) SetConsoleTextAttribute(GetStdHandle(STD_OUTPUT_HANDLE),FOREGROUND_INTENSITY|FOREGROUND_BLUE);
+    if (n==3) SetConsoleTextAttribute(GetStdHandle(STD_OUTPUT_HANDLE),FOREGROUND_INTENSITY|FOREGROUND_GREEN|FOREGROUND_RED);
+    if (n==4) SetConsoleTextAttribute(GetStdHandle(STD_OUTPUT_HANDLE),FOREGROUND_INTENSITY|FOREGROUND_GREEN);
+    if (n==5) SetConsoleTextAttribute(GetStdHandle(STD_OUTPUT_HANDLE),FOREGROUND_INTENSITY|FOREGROUND_BLUE|FOREGROUND_RED);
+    if (n==6) SetConsoleTextAttribute(GetStdHandle(STD_OUTPUT_HANDLE),FOREGROUND_INTENSITY|FOREGROUND_GREEN|FOREGROUND_BLUE);
+    if (n==7) SetConsoleTextAttribute(GetStdHandle(STD_OUTPUT_HANDLE),FOREGROUND_INTENSITY);
+    if (n==8) SetConsoleTextAttribute(GetStdHandle(STD_OUTPUT_HANDLE),0);
+}
+void cursorhide(){
+    HANDLE handle=GetStdHandle(STD_OUTPUT_HANDLE);
+    CONSOLE_CURSOR_INFO CursorInfo;
+    GetConsoleCursorInfo(handle,&CursorInfo);
+    CursorInfo.bVisible=false;
+    SetConsoleCursorInfo(handle,&CursorInfo);
+}
+void cursorshow(){
+    HANDLE handle=GetStdHandle(STD_OUTPUT_HANDLE);
+    CONSOLE_CURSOR_INFO CursorInfo;
+    GetConsoleCursorInfo(handle,&CursorInfo);
+    CursorInfo.bVisible=true;
+    SetConsoleCursorInfo(handle,&CursorInfo);
+}
+std::pair <int,int> getxy(){
+    HANDLE hStdout;
+    CONSOLE_SCREEN_BUFFER_INFO pBuffer; 
+    hStdout=GetStdHandle(STD_OUTPUT_HANDLE); 
+    GetConsoleScreenBufferInfo(hStdout,&pBuffer); 
+    return std::make_pair(pBuffer.dwCursorPosition.X,pBuffer.dwCursorPosition.Y);
+}
+void gotoxy(int x,int y){
+    CONSOLE_SCREEN_BUFFER_INFO csbiInfo;                            
+    HANDLE hConsoleOut;
+    hConsoleOut=GetStdHandle(STD_OUTPUT_HANDLE);
+    GetConsoleScreenBufferInfo(hConsoleOut,&csbiInfo);
+    csbiInfo.dwCursorPosition.X=x;                                    
+    csbiInfo.dwCursorPosition.Y=y;                                    
+    SetConsoleCursorPosition(hConsoleOut,csbiInfo.dwCursorPosition);   
+}
+void tellraw(std::string s,LL num1=0,LL num2=0,LL num3=0){
+	//system("color 1A");
+    color(white);
+    bool colorful=false;
+    bool pausing=false;
+    int len=s.size();
+    char c;
+    for (LL i=0;i<len;++i){
+        if (s[i]=='&'){
+            i++;
+            if (s[i]=='w') color(white);
+            if (s[i]=='r') color(red);
+            if (s[i]=='b') color(blue);
+            if (s[i]=='y') color(yellow);
+            if (s[i]=='c') color(cyan);
+            if (s[i]=='p') color(purple);
+            if (s[i]=='g') color(green);
+            if (s[i]=='a') color(gray);
+            if (s[i]=='n') color(black);
+            if (s[i]=='+') pausing=true;
+            else if (s[i]=='-') pausing=false;
+            if (s[i]=='*') colorful=true;
+            else colorful=false;
+        }else if (s[i]=='%'){
+            i++;
+            if (s[i]=='1') printf("%lld",num1);
+            if (s[i]=='2') printf("%lld",num2);
+            if (s[i]=='3') printf("%lld",num3);
+        }else if (s[i]=='|'){
+            i++;
+            if (s[i]=='n') putchar('\n');
+            if (s[i]=='t') putchar('\t');
+            if (s[i]=='|') putchar('|');
+            if (s[i]=='%') printf("%%");
+            if (s[i]=='&') putchar('&');
+            if (s[i]=='p') c=_getch();
+            if (s[i]=='c') system("cls");
+            if (s[i]=='k') Sleep((DEBUG)?10:500);
+        }else{
+            if (colorful==true) color(rand()%8);
+            if (pausing==true) Sleep((DEBUG)?2:100);
+            putchar(s[i]);
+        }
+    }
+    color(white);
+}
+void tellrawfast(std::string s,LL num1=0,LL num2=0,LL num3=0){
+	//system("color 1A");
+    color(white);
+    bool colorful=false;
+    bool pausing=false;
+    int len=s.size();
+    char c;
+    for (LL i=0;i<len;++i){
+        if (s[i]=='&'){
+            i++;
+            if (s[i]=='w') color(white);
+            if (s[i]=='r') color(red);
+            if (s[i]=='b') color(blue);
+            if (s[i]=='y') color(yellow);
+            if (s[i]=='c') color(cyan);
+            if (s[i]=='p') color(purple);
+            if (s[i]=='g') color(green);
+            if (s[i]=='a') color(gray);
+            if (s[i]=='n') color(black);
+            if (s[i]=='+') pausing=true;
+            else if (s[i]=='-') pausing=false;
+            if (s[i]=='*') colorful=true;
+            else colorful=false;
+        }else if (s[i]=='%'){
+            i++;
+            if (s[i]=='1') printf("%lld",num1);
+            if (s[i]=='2') printf("%lld",num2);
+            if (s[i]=='3') printf("%lld",num3);
+        }else if (s[i]=='|'){
+            i++;
+            if (s[i]=='n') putchar('\n');
+            if (s[i]=='t') putchar('\t');
+            if (s[i]=='|') putchar('|');
+            if (s[i]=='%') printf("%%");
+            if (s[i]=='&') putchar('&');
+            if (s[i]=='p') c=_getch();
+            if (s[i]=='c') system("cls");
+            if (s[i]=='k') Sleep((DEBUG)?10:500);
+        }else{
+            if (colorful==true) color(rand()%8);
+            if (pausing==true) Sleep((1)?2:100);
+            putchar(s[i]);
+        }
+    }
+    color(white);
+}
+char readkey(std::string s,std::string range=""){
+    tellraw(s);
+    int len=range.size();
+    char c=_getch();
+    while (true){
+        for (int i=0;i<len;++i){
+            if (c==range[i]) return c;
+        }
+        c=_getch();
+    }
+}
+std::string inputbox(std::string s){
+    tellraw(s+"|n");
+    cursorshow();
+    std::string t;
+    color(white);
+    std::cin>>t;
+    cursorhide();
+    return t;
+}
+int chosenbox(std::string s){
+    int len=s.size();
+    int i=0;
+    std::string t="";
+    while (s[i]!='@' && i<len) t=t+s[i],i++;
+    tellraw(t);
+    putchar('\n');
+    std::pair <int,int> tmp=getxy(); 
+    int j=i;
+    t="";
+    int item=0;
+    for (int i=j+1;i<len;++i){
+        if (s[i]=='#'){
+            j=i;
+            break;
+        }else if (s[i]=='@'){
+            item++;
+            tellraw("    &c%1. &w"+t+"|n",item);
+            t="";
+        }else{
+            t=t+s[i];
+        }
+    }
+    t="";
+    for (int i=j+1;i<len;++i){
+        t=t+s[i];
+    }
+    tellraw(t);
+    std::pair <int,int> tmp2=getxy();
+    gotoxy(0,tmp.second);
+    tellraw("&w>>");
+    char c=_getch();
+    int chosen=1;
+    while (c!=13){
+        if (c==72 || c==72){
+            if (chosen>1){
+                gotoxy(0,tmp.second+chosen-1);
+                chosen--;
+                printf("   ");
+                gotoxy(0,tmp.second+chosen-1);
+                tellraw("&w>>");
+            }
+        }else if (c==80 || c==80){
+            if (chosen<item){
+                gotoxy(0,tmp.second+chosen-1);
+                chosen++;
+                printf("   ");
+                gotoxy(0,tmp.second+chosen-1);
+                tellraw("&w>>");
+            }           
+        }else if (c>='1' && c<='9' && c-48<=item){
+            gotoxy(0,tmp.second+chosen-1);
+            chosen=c-48;
+            printf("   ");
+            gotoxy(0,tmp.second+chosen-1);
+            tellraw("&w>>");           
+        }else if (c==75 || c==75){
+            gotoxy(0,tmp.second+chosen-1);
+            chosen=1;
+            printf("   ");
+            gotoxy(0,tmp.second+chosen-1);
+            tellraw("&w>>");           
+        }else if (c==77 || c==77){
+            gotoxy(0,tmp.second+chosen-1);
+            chosen=item;
+            printf("   ");
+            gotoxy(0,tmp.second+chosen-1);
+            tellraw("&w>>");           
+        }
+        c=_getch();
+    }
+    gotoxy(tmp2.first,tmp2.second);
+    return chosen;
+}
+std::string getJavaChosen(std::vector<std::string>& jdks){	
+	std::vector<std::string>::iterator o;
+	std::string cho;
+	cho=cho+"@";
+	//vector<string> choice;
+	std::string Java8List[100];
+	std::string Java8ListPath[100];
+	int ioindex=1;
+	for(o=jdks.begin();o!=jdks.end();++o){
+		std::string p_1=(*o);
+		for(int p_2=0;p_2<p_1.size();p_2++){
+			if(p_1[p_2]=='\\'){
+				p_2++;
+				p_1.insert(p_2,"\\");
+			}
+		}
+		Java8List[ioindex]=p_1;
+		Java8ListPath[ioindex]=(*o);
+		ioindex++;
+		//choice.push_back(p_1);
+		cho=cho+(*o)+"@";
+	}
+	cho=cho+"#"; 
+
+
+	int index=chosenbox(cho);
+
+	std::cout<<std::endl;
+	std::cout<<std::endl;
+	std::cout<<std::endl;
+
+	return Java8ListPath[index];
+}
+int main(){
+	std::vector<std::string> jdks;
+	readFromConfig(jdks);
+	readFromProgram(jdks);
+	std::string cur=getJavaChosen(jdks);
+	setJava((char*)cur.c_str());
+}
+

LICENSE

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+MIT License
+
+Copyright (c) 2024 Hileb
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.

README.md

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+# JDKSwitcher
+ switch "JAVA_HOME"