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| Rev | Author | Line No. | Line |
|---|---|---|---|
| 1234 | cejka | 1 | /* |
| 2071 | jermar | 2 | * Copyright (c) 2006 Josef Cejka |
| 3348 | jermar | 3 | * Copyright (c) 2008 Jakub Jermar |
| 1234 | cejka | 4 | * All rights reserved. |
| 5 | * |
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| 6 | * Redistribution and use in source and binary forms, with or without |
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| 7 | * modification, are permitted provided that the following conditions |
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| 8 | * are met: |
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| 9 | * |
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| 10 | * - Redistributions of source code must retain the above copyright |
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| 11 | * notice, this list of conditions and the following disclaimer. |
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| 12 | * - Redistributions in binary form must reproduce the above copyright |
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| 13 | * notice, this list of conditions and the following disclaimer in the |
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| 14 | * documentation and/or other materials provided with the distribution. |
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| 15 | * - The name of the author may not be used to endorse or promote products |
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| 16 | * derived from this software without specific prior written permission. |
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| 17 | * |
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| 18 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR |
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| 19 | * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
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| 20 | * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. |
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| 21 | * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, |
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| 22 | * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
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| 23 | * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
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| 24 | * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
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| 25 | * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
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| 26 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF |
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| 27 | * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
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| 28 | */ |
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| 29 | |||
| 1866 | jermar | 30 | /** @addtogroup libc |
| 1653 | cejka | 31 | * @{ |
| 32 | */ |
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| 33 | /** @file |
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| 34 | */ |
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| 35 | |||
| 1234 | cejka | 36 | #include <stdarg.h> |
| 37 | #include <stdio.h> |
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| 3348 | jermar | 38 | #include <stdlib.h> |
| 1234 | cejka | 39 | #include <io/printf_core.h> |
| 40 | |||
| 3348 | jermar | 41 | static int asprintf_prewrite(const char *str, size_t count, void *unused) |
| 1234 | cejka | 42 | { |
| 3348 | jermar | 43 | return count; |
| 1234 | cejka | 44 | } |
| 45 | |||
| 3351 | jermar | 46 | /** Allocate and print to string. |
| 47 | * |
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| 48 | * @param strp Address of the pointer where to store the address of |
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| 49 | * the newly allocated string. |
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| 50 | * @fmt Format strin. |
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| 51 | * |
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| 52 | * @return Number of characters printed or a negative error code. |
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| 53 | */ |
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| 3348 | jermar | 54 | int asprintf(char **strp, const char *fmt, ...) |
| 1234 | cejka | 55 | { |
| 2230 | jermar | 56 | struct printf_spec ps = { |
| 3348 | jermar | 57 | asprintf_prewrite, |
| 2230 | jermar | 58 | NULL |
| 59 | }; |
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| 3348 | jermar | 60 | int ret; |
| 61 | va_list args; |
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| 62 | |||
| 63 | va_start(args, fmt); |
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| 64 | ret = printf_core(fmt, &ps, args); |
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| 65 | va_end(args); |
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| 66 | if (ret > 0) { |
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| 67 | *strp = malloc(ret + 20); |
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| 68 | if (!*strp) |
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| 69 | return -1; |
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| 70 | va_start(args, fmt); |
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| 71 | vsprintf(*strp, fmt, args); |
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| 72 | va_end(args); |
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| 73 | } |
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| 74 | |||
| 2209 | decky | 75 | return ret; |
| 1234 | cejka | 76 | } |
| 77 | |||
| 1866 | jermar | 78 | /** @} |
| 1653 | cejka | 79 | */ |