1 /* 2 * Copyright 2012, The Android Open Source Project 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 17 #include <stdio.h> 18 19 ssize_t getline(char **lineptr, size_t *n, FILE *stream) 20 { 21 char *ptr; 22 23 ptr = fgetln(stream, n); 24 25 if (ptr == NULL) { 26 return -1; 27 } 28 29 /* Free the original ptr */ 30 if (*lineptr != NULL) free(*lineptr); 31 32 /* Add one more space for '\0' */ 33 size_t len = n[0] + 1; 34 35 /* Update the length */ 36 n[0] = len; 37 38 /* Allocate a new buffer */ 39 *lineptr = malloc(len); 40 41 /* Copy over the string */ 42 memcpy(*lineptr, ptr, len-1); 43 44 /* Write the NULL character */ 45 (*lineptr)[len-1] = '\0'; 46 47 /* Return the length of the new buffer */ 48 return len; 49 } 50
