gecko-dev/xpinstall/packager/unix/editor.jst

var srDest = $SpaceRequired$;

var err = initInstall("Mozilla Editor", "Editor", "$Version$"); 
logComment("initInstall: " + err);

var communicatorFolder = getFolder("Program");
logComment("communicatorFolder: " + communicatorFolder);

if (verifyDiskSpace(communicatorFolder, srDest))
{
    err = addDirectory("Program",
                       "$Version$",
                       "bin",              // jar source folder
                       communicatorFolder, // target folder 
                       "",                 // target subdir 
                       true );             // force Flag 

    logComment("addDirectory() returned: " + err);

    err = getLastError();
    if (err==SUCCESS)
    {
	    err = performInstall(); 
	    logComment("performInstall() returned: " + err);
    }
    else
    {
	    cancelInstall(err);
	    logComment("cancelInstall() due to error: " + err);
    }
}
else
    cancelInstall(INSUFFICIENT_DISK_SPACE);