| /* Test of snprintf() 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 of the License, 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 Bruno Haible <bruno@clisp.org>, 2007. */ |
| |
| #include <config.h> |
| |
| #include <stdio.h> |
| |
| #include "signature.h" |
| SIGNATURE_CHECK (snprintf, int, (char *, size_t, char const *, ...)); |
| |
| #include <string.h> |
| |
| #include "macros.h" |
| |
| int |
| main (int argc, char *argv[]) |
| { |
| char buf[8]; |
| int size; |
| int retval; |
| |
| retval = snprintf (NULL, 0, "%d", 12345); |
| ASSERT (retval == 5); |
| |
| for (size = 0; size <= 8; size++) |
| { |
| memcpy (buf, "DEADBEEF", 8); |
| retval = snprintf (buf, size, "%d", 12345); |
| ASSERT (retval == 5); |
| if (size < 6) |
| { |
| if (size > 0) |
| { |
| ASSERT (memcmp (buf, "12345", size - 1) == 0); |
| ASSERT (buf[size - 1] == '\0' || buf[size - 1] == '0' + size); |
| } |
| #if !CHECK_SNPRINTF_POSIX |
| if (size > 0) |
| #endif |
| ASSERT (memcmp (buf + size, &"DEADBEEF"[size], 8 - size) == 0); |
| } |
| else |
| { |
| ASSERT (memcmp (buf, "12345\0EF", 8) == 0); |
| } |
| } |
| |
| /* Test the support of the POSIX/XSI format strings with positions. */ |
| { |
| char result[100]; |
| retval = snprintf (result, sizeof (result), "%2$d %1$d", 33, 55); |
| ASSERT (strcmp (result, "55 33") == 0); |
| ASSERT (retval == strlen (result)); |
| } |
| |
| return 0; |
| } |