1 /* 2 * Copyright (c) 2017 IBM Corporation 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 #include <stdarg.h> 17 #include <stdio.h> 18 19 int cmd_scanf(const char *cmd, const char *fmt, ...) { 20 va_list args; 21 FILE *pipe; 22 23 va_start(args, fmt); 24 pipe = popen(cmd, "r"); 25 if (pipe == NULL) { 26 va_end(args); 27 return -1; 28 } 29 30 vfscanf(pipe, fmt, args); 31 va_end(args); 32 pclose(pipe); 33 return 0; 34 } 35
