HMCLauncher: try bundled JRE

2019-02-08 22:05:16 +08:00
parent f0c7f54cc6
commit 426ea607e8
12 changed files with 375 additions and 5 deletions
--- a/HMCLauncher/HMCL/main.cpp
+++ b/HMCLauncher/HMCL/main.cpp
@@ -0,0 +1,79 @@
+#include "stdafx.h"
+#include "main.h"
+#include "os.h"
+#include "java.h"
+
+using namespace std;
+
+
+void LaunchJVM(const wstring &javaPath, const wstring &jarPath)
+{
+	if (MyCreateProcess(L"\"" + javaPath + L"\" -XX:MinHeapFreeRatio=5 -XX:MaxHeapFreeRatio=15 -jar \"" + jarPath + L"\""))
+		exit(EXIT_SUCCESS);
+}
+
+int APIENTRY wWinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPWSTR lpCmdLine, int nCmdShow)
+{
+	wstring path, exeName;
+
+	// Since Jar file is appended to this executable, we should first get the location of JAR file.
+	if (ERROR_SUCCESS != MyGetModuleFileName(NULL, exeName))
+		return 1;
+
+
+	// First try the Java packaged together.
+	bool is64Bit = false;
+	GetArch(is64Bit); // if failed to determine architecture of operating system, consider 32-bit.
+
+	if (is64Bit)
+	{
+		LaunchJVM(L"jre-x64\\bin\\javaw.exe", exeName);
+	}
+	else
+	{
+		LaunchJVM(L"jre-x86\\bin\\javaw.exe", exeName);
+	}
+
+	if (FindJava(path))
+		LaunchJVM(path + L"\\bin\\javaw.exe", exeName);
+
+	// Try java in PATH
+	LaunchJVM(L"javaw", exeName);
+
+	// Or we try to search Java in C:\Program Files.
+	{
+		WIN32_FIND_DATA data;
+		HANDLE hFind = FindFirstFile(L"C:\\Program Files\\Java\\*", &data);      // Search all subdirectory
+
+		if (hFind != INVALID_HANDLE_VALUE) {
+			do {
+				wstring javaw = wstring(L"C:\\Program Files\\Java\\") + data.cFileName + wstring(L"\\bin\\javaw.exe");
+				if (FindFirstFileExists(javaw.c_str(), 0)) {
+					LaunchJVM(javaw, exeName);
+				}
+			} while (FindNextFile(hFind, &data));
+			FindClose(hFind);
+		}
+	}
+
+	// Consider C:\Program Files (x86)\Java
+	{
+		WIN32_FIND_DATA data;
+		HANDLE hFind = FindFirstFile(L"C:\\Program Files (x86)\\Java\\*", &data);      // Search all subdirectory
+
+		if (hFind != INVALID_HANDLE_VALUE) {
+			do {
+				wstring javaw = wstring(L"C:\\Program Files (x86)\\Java\\") + data.cFileName + L"\\bin\\javaw.exe";
+				if (FindFirstFileExists(javaw.c_str(), 0)) {
+					LaunchJVM(javaw, exeName);
+				}
+			} while (FindNextFile(hFind, &data));
+			FindClose(hFind);
+		}
+	}
+
+	MessageBox(NULL, L"Java installation cannot be found in this computer, please download it from https://java.com \n"
+		L"未能在这台电脑上找到Java 8~Java 10，请从 https://java.com 下载安装Java", L"Error", MB_ICONERROR | MB_OK);
+	ShellExecute(0, 0, L"https://java.com/", 0, 0, SW_SHOW);
+	return 1;
+}