switch(buffer[0]){
			case 'L':
				printf("%s \n",buffer);
				stringa =malloc(100*sizeof(*stringa));
				for(i=2;buffer[i]!='\0';i++)
					stringa[i-2]=buffer[i];
				stringa[i-2]='\0';
				printf("%s\n",stringa);
				file=fopen(stringa, "r");
				if(file==NULL){
					free(stringa);
					stringa=NULL;
					free(buffer);
					buffer=NULL;
					printf("%s non trovato \n", stringa);
				}
				else{
					if(tree!=NULL)
						rbdestroy(tree);
					tree=createrbtree();
					file =fopen(stringa, "r");
					free(buffer);
					buffer=NULL;
					free(stringa);
					stringa=NULL;
					buffer=malloc(sizeof(*buffer)*100);
					while(fgets(buffer, 100, file)!= NULL){
						stringa =malloc(sizeof(*stringa)*50);
						for(i=0;buffer[i]!=' ';i++){
							stringa[i]=buffer[i];
							}
						stringa[i] = '\0';
						n=stringa;
						printf("%s\n",n);
						free(stringa);
						stringa=NULL;
						stringa = malloc(sizeof(*stringa)*4);
						z=0;
						for(i = i+1;buffer[i]!=':';i++){
							stringa[z]=buffer[i];
							z++;
							}
						stringa[z] = '\0';
						h = atoi(stringa);
						printf("%d\n",h);
						free(stringa);
						stringa=NULL;
						stringa = malloc(sizeof(*stringa)*4);
						z=0;
						for(i = i+1;buffer[i]!=' ';i++){
							stringa[z]=buffer[i];
							z++;
							}
						stringa[z] = '\0';
						//printf("%s\n",stringa);
						m = atoi(stringa);
						printf("%d\n",m);
						free(stringa);
						stringa=NULL;
						a = createorario(h,m);
						stringa = malloc(sizeof(*stringa)*4);
						z=0;
						for(i = i+1;buffer[i]!=':';i++){
							stringa[z]=buffer[i];
							z++;
							}
						stringa[z] = '\0';
						h = atoi(stringa);
						printf("%d\n",h);
						free(stringa);
						stringa=NULL;
						stringa = malloc(sizeof(*stringa)*4);
						z=0;
						for(i = i+1;buffer[i]!='\0';i++){
							stringa[z]=buffer[i];
							z++;
							}
						stringa[z] = '\0';
						m = atoi(stringa);
						printf("%d\n",m);
						free(stringa);
						stringa=NULL;
						p = createorario(h,m);
						t=createtestimone(n,a,p);
						rbinsert(tree,t);
						free(stringa);
						stringa=NULL;
						free(buffer);
						buffer=NULL;
						buffer =malloc(sizeof(*buffer)*100);
						}
				fclose(file);
				}
				break;