source: release-kits/wirk3/wrapper/wrapper.cpp@ 15053

#include <windows.h>

#include <fstream>
#include <iostream>

using namespace std;

void WriteUsingStream(BYTE* pBytes, int nCount, char* filename)
{
    ofstream fStream(filename, ios::binary | ios::out);

    fStream.write((char*) pBytes, nCount);
    fStream.close();
}

int extractResource(const char * name, const char * type, char * file) {

    HMODULE hModule = GetModuleHandle(NULL);

    HRSRC hRsrc = FindResource(hModule, name, type);
    if (hRsrc == NULL) return 1; //couldn't find

    HGLOBAL hGlobal = LoadResource(hModule, hRsrc);
    if (hGlobal == NULL) return 1; //couldn't lock

    BYTE* pBytes = (BYTE*) LockResource(hGlobal);
    if (pBytes == NULL) return 1; //couldn't lock

    DWORD dwLength = SizeofResource(hModule, hRsrc);
    WriteUsingStream(pBytes, dwLength, file);
    UnlockResource(hGlobal);
    
    FreeResource(hGlobal);
    
    return 0;

}

void main()
{
    
    cout << "Greenstone3 Installer" << endl;
        
    //create the temp folder
    cout << "Creating temp folder 'greenstone3.tmp' ..." << endl;
    system("mkdir greenstone3.tmp");
    
    //extract the resources
    cout << "Extracting jar launcher ..." << endl;
    extractResource( "LAUNCHER", "EXE", "greenstone3.tmp\\launch-installer.exe" );
    
    cout << "Extracting jar installer ..." << endl;
    extractResource( "GREENSTONE_JAR", "JAR", "greenstone3.tmp\\greenstone3.jar" );
                
    //change to the temp directory and start the jar
    SetCurrentDirectory("greenstone3.tmp");

    //launch the jar with launch4j, taking a note of the exit code or info in the log
    cout << "Launching Installer ..." << endl;
    int launch_exit_code = 0;
    launch_exit_code = system("launch-installer.exe");
            
    //if it failed, launch the installer for the bundled java, then try again
    if ( launch_exit_code == 1 ) {
        cout << "Greenstone requires Java Runtime Enviromnent (JRE) 1.4.0 or greater" << endl;
        cout << "It appears that you do not have an a suitible JRE installed" << endl;

        
        //is this an installer with the bundled JRE?
        cout << "Extracting java installer ..." << endl;
        int extract_result = extractResource( "JAVA", "EXE", "@java.installer@" );
        if ( extract_result == 0 ) {
            
            //yes, JRE is bundled
            cout << "Starting the installation process for the bundled JRE" << endl;    
            system( "@java.installer@" );
            launch_exit_code = system("launch-installer.exe");
            if ( launch_exit_code == 1 ) {
                cout << "Still could not find a JRE. Please install a JRE and try again." << endl;
            }
            
        } else {
            
            //no, JRE is not bundled
            cout << "Sorry, there is no bundled JRE" << endl;
            cout << "Install a JRE and try again (make sure JRE_HOME is set)" << endl;
            cout << "Or, download a greentsone3 installer with a bundled JRE and use that instead of this one" << endl;
        
        }
        system("if EXISTS greenstone3.tmp\\@java.installer@ del greenstone3.tmp\\@java.installer@");
        
    }
    
    //change back to the original directory and clean up the temp directory
    SetCurrentDirectory("..");
    system("if EXISTS greenstone3.tmp\\greenstone3.jar del greenstone3.tmp\\greenstone3.jar");
    system("if EXISTS greenstone3.tmp\\launch-installer.exe del greenstone3.tmp\\launch-installer.exe");
    system("if EXISTS greenstone3.tmp\\ant.install.log del greenstone3.tmp\\ant.install.log");
    system("rmdir greenstone3.tmp");
    
    
}