Ben Cheng | fd93794 | 2012-03-26 15:59:46 -0700 | [diff] [blame] | 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 | |
Nathaniel Adkins | edb0013 | 2013-06-17 14:07:05 -0500 | [diff] [blame^] | 47 | /* Return the length of the new buffer not counting the null character */ |
| 48 | return len-1; |
Ben Cheng | fd93794 | 2012-03-26 15:59:46 -0700 | [diff] [blame] | 49 | } |