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|---|---|---|---|
| 1 | /* |
1 | /* |
| 2 | * Copyright (c) 2006 Josef Cejka |
2 | * Copyright (c) 2006 Josef Cejka |
| 3 | * Copyright (c) 2008 Jakub Jermar |
3 | * Copyright (c) 2008 Jakub Jermar |
| 4 | * All rights reserved. |
4 | * All rights reserved. |
| 5 | * |
5 | * |
| 6 | * Redistribution and use in source and binary forms, with or without |
6 | * Redistribution and use in source and binary forms, with or without |
| 7 | * modification, are permitted provided that the following conditions |
7 | * modification, are permitted provided that the following conditions |
| 8 | * are met: |
8 | * are met: |
| 9 | * |
9 | * |
| 10 | * - Redistributions of source code must retain the above copyright |
10 | * - Redistributions of source code must retain the above copyright |
| 11 | * notice, this list of conditions and the following disclaimer. |
11 | * notice, this list of conditions and the following disclaimer. |
| 12 | * - Redistributions in binary form must reproduce the above copyright |
12 | * - Redistributions in binary form must reproduce the above copyright |
| 13 | * notice, this list of conditions and the following disclaimer in the |
13 | * notice, this list of conditions and the following disclaimer in the |
| 14 | * documentation and/or other materials provided with the distribution. |
14 | * documentation and/or other materials provided with the distribution. |
| 15 | * - The name of the author may not be used to endorse or promote products |
15 | * - The name of the author may not be used to endorse or promote products |
| 16 | * derived from this software without specific prior written permission. |
16 | * derived from this software without specific prior written permission. |
| 17 | * |
17 | * |
| 18 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR |
18 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR |
| 19 | * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
19 | * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
| 20 | * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. |
20 | * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. |
| 21 | * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, |
21 | * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, |
| 22 | * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
22 | * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
| 23 | * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
23 | * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
| 24 | * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
24 | * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
| 25 | * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
25 | * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
| 26 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF |
26 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF |
| 27 | * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
27 | * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| 28 | */ |
28 | */ |
| 29 | 29 | ||
| 30 | /** @addtogroup libc |
30 | /** @addtogroup libc |
| 31 | * @{ |
31 | * @{ |
| 32 | */ |
32 | */ |
| 33 | /** @file |
33 | /** @file |
| 34 | */ |
34 | */ |
| 35 | 35 | ||
| 36 | #include <stdarg.h> |
36 | #include <stdarg.h> |
| 37 | #include <stdio.h> |
37 | #include <stdio.h> |
| 38 | #include <stdlib.h> |
38 | #include <stdlib.h> |
| 39 | #include <io/printf_core.h> |
39 | #include <io/printf_core.h> |
| 40 | 40 | ||
| 41 | static int asprintf_prewrite(const char *str, size_t count, void *unused) |
41 | static int asprintf_prewrite(const char *str, size_t count, void *unused) |
| 42 | { |
42 | { |
| 43 | return count; |
43 | return count; |
| 44 | } |
44 | } |
| 45 | 45 | ||
| - | 46 | /** Allocate and print to string. |
|
| - | 47 | * |
|
| - | 48 | * @param strp Address of the pointer where to store the address of |
|
| - | 49 | * the newly allocated string. |
|
| - | 50 | * @fmt Format strin. |
|
| - | 51 | * |
|
| - | 52 | * @return Number of characters printed or a negative error code. |
|
| - | 53 | */ |
|
| 46 | int asprintf(char **strp, const char *fmt, ...) |
54 | int asprintf(char **strp, const char *fmt, ...) |
| 47 | { |
55 | { |
| 48 | struct printf_spec ps = { |
56 | struct printf_spec ps = { |
| 49 | asprintf_prewrite, |
57 | asprintf_prewrite, |
| 50 | NULL |
58 | NULL |
| 51 | }; |
59 | }; |
| 52 | int ret; |
60 | int ret; |
| 53 | va_list args; |
61 | va_list args; |
| 54 | 62 | ||
| 55 | va_start(args, fmt); |
63 | va_start(args, fmt); |
| 56 | ret = printf_core(fmt, &ps, args); |
64 | ret = printf_core(fmt, &ps, args); |
| 57 | va_end(args); |
65 | va_end(args); |
| 58 | if (ret > 0) { |
66 | if (ret > 0) { |
| 59 | *strp = malloc(ret + 20); |
67 | *strp = malloc(ret + 20); |
| 60 | if (!*strp) |
68 | if (!*strp) |
| 61 | return -1; |
69 | return -1; |
| 62 | va_start(args, fmt); |
70 | va_start(args, fmt); |
| 63 | vsprintf(*strp, fmt, args); |
71 | vsprintf(*strp, fmt, args); |
| 64 | va_end(args); |
72 | va_end(args); |
| 65 | } |
73 | } |
| 66 | 74 | ||
| 67 | return ret; |
75 | return ret; |
| 68 | } |
76 | } |
| 69 | 77 | ||
| 70 | /** @} |
78 | /** @} |
| 71 | */ |
79 | */ |
| 72 | 80 | ||