| 0,0 → 1,79 |
|---|
| /* |
| * Copyright (c) 2006 Josef Cejka |
| * Copyright (c) 2008 Jakub Jermar |
| * All rights reserved. |
| * |
| * Redistribution and use in source and binary forms, with or without |
| * modification, are permitted provided that the following conditions |
| * are met: |
| * |
| * - Redistributions of source code must retain the above copyright |
| * notice, this list of conditions and the following disclaimer. |
| * - Redistributions in binary form must reproduce the above copyright |
| * notice, this list of conditions and the following disclaimer in the |
| * documentation and/or other materials provided with the distribution. |
| * - The name of the author may not be used to endorse or promote products |
| * derived from this software without specific prior written permission. |
| * |
| * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR |
| * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
| * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. |
| * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, |
| * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
| * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
| * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
| * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
| * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF |
| * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| */ |
| |
| /** @addtogroup libc |
| * @{ |
| */ |
| /** @file |
| */ |
| |
| #include <stdarg.h> |
| #include <stdio.h> |
| #include <stdlib.h> |
| #include <io/printf_core.h> |
| |
| static int asprintf_prewrite(const char *str, size_t count, void *unused) |
| { |
| return count; |
| } |
| |
| /** Allocate and print to string. |
| * |
| * @param strp Address of the pointer where to store the address of |
| * the newly allocated string. |
| * @fmt Format strin. |
| * |
| * @return Number of characters printed or a negative error code. |
| */ |
| int asprintf(char **strp, const char *fmt, ...) |
| { |
| struct printf_spec ps = { |
| asprintf_prewrite, |
| NULL |
| }; |
| int ret; |
| va_list args; |
| |
| va_start(args, fmt); |
| ret = printf_core(fmt, &ps, args); |
| va_end(args); |
| if (ret > 0) { |
| *strp = malloc(ret + 20); |
| if (!*strp) |
| return -1; |
| va_start(args, fmt); |
| vsprintf(*strp, fmt, args); |
| va_end(args); |
| } |
| |
| return ret; |
| } |
| |
| /** @} |
| */ |