| /* Test of getdelim() function. |
| Copyright (C) 2007-2020 Free Software Foundation, Inc. |
| |
| This program is free software; you can redistribute it and/or modify |
| it under the terms of the GNU General Public License as published by |
| the Free Software Foundation; either version 3, or (at your option) |
| any later version. |
| |
| This program is distributed in the hope that it will be useful, |
| but WITHOUT ANY WARRANTY; without even the implied warranty of |
| MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| GNU General Public License for more details. |
| |
| You should have received a copy of the GNU General Public License |
| along with this program; if not, see <https://www.gnu.org/licenses/>. */ |
| |
| /* Written by Eric Blake <ebb9@byu.net>, 2007. */ |
| |
| #include <config.h> |
| |
| #include <stdio.h> |
| |
| #include "signature.h" |
| SIGNATURE_CHECK (getdelim, ssize_t, (char **, size_t *, int, FILE *)); |
| |
| #include <stdlib.h> |
| #include <string.h> |
| |
| #include "macros.h" |
| |
| int |
| main (void) |
| { |
| FILE *f; |
| char *line; |
| size_t len; |
| ssize_t result; |
| |
| /* Create test file. */ |
| f = fopen ("test-getdelim.txt", "wb"); |
| if (!f || fwrite ("anAnbcnd\0f", 1, 10, f) != 10 || fclose (f) != 0) |
| { |
| fputs ("Failed to create sample file.\n", stderr); |
| remove ("test-getdelim.txt"); |
| return 1; |
| } |
| f = fopen ("test-getdelim.txt", "rb"); |
| if (!f) |
| { |
| fputs ("Failed to reopen sample file.\n", stderr); |
| remove ("test-getdelim.txt"); |
| return 1; |
| } |
| |
| /* Test initial allocation, which must include trailing NUL. */ |
| line = NULL; |
| len = 0; |
| result = getdelim (&line, &len, 'n', f); |
| ASSERT (result == 2); |
| ASSERT (strcmp (line, "an") == 0); |
| ASSERT (2 < len); |
| free (line); |
| |
| /* Test initial allocation again, with line = NULL and len != 0. */ |
| line = NULL; |
| len = (size_t)(~0) / 4; |
| result = getdelim (&line, &len, 'n', f); |
| ASSERT (result == 2); |
| ASSERT (strcmp (line, "An") == 0); |
| ASSERT (2 < len); |
| free (line); |
| |
| /* Test growth of buffer. */ |
| line = malloc (1); |
| len = 1; |
| result = getdelim (&line, &len, 'n', f); |
| ASSERT (result == 3); |
| ASSERT (strcmp (line, "bcn") == 0); |
| ASSERT (3 < len); |
| |
| /* Test embedded NULs and EOF behavior. */ |
| result = getdelim (&line, &len, 'n', f); |
| ASSERT (result == 3); |
| ASSERT (memcmp (line, "d\0f", 4) == 0); |
| ASSERT (3 < len); |
| |
| result = getdelim (&line, &len, 'n', f); |
| ASSERT (result == -1); |
| |
| free (line); |
| fclose (f); |
| remove ("test-getdelim.txt"); |
| return 0; |
| } |