Rev 3425 | Details | Compare with Previous | Last modification | View Log | RSS feed
| 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 | * |
||
| 6 | * Redistribution and use in source and binary forms, with or without |
||
| 7 | * modification, are permitted provided that the following conditions |
||
| 8 | * are met: |
||
| 9 | * |
||
| 10 | * - Redistributions of source code must retain the above copyright |
||
| 11 | * notice, this list of conditions and the following disclaimer. |
||
| 12 | * - Redistributions in binary form must reproduce the above copyright |
||
| 13 | * notice, this list of conditions and the following disclaimer in the |
||
| 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 |
||
| 16 | * derived from this software without specific prior written permission. |
||
| 17 | * |
||
| 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 |
||
| 20 | * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. |
||
| 21 | * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, |
||
| 22 | * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
||
| 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 |
||
| 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 |
||
| 27 | * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
||
| 28 | */ |
||
| 29 | |||
| 1866 | jermar | 30 | /** @addtogroup libc |
| 1653 | cejka | 31 | * @{ |
| 32 | */ |
||
| 33 | /** @file |
||
| 34 | */ |
||
| 35 | |||
| 1234 | cejka | 36 | #include <stdarg.h> |
| 37 | #include <stdio.h> |
||
| 3348 | jermar | 38 | #include <stdlib.h> |
| 4692 | svoboda | 39 | #include <string.h> |
| 1234 | cejka | 40 | #include <io/printf_core.h> |
| 41 | |||
| 4692 | svoboda | 42 | static int asprintf_str_write(const char *str, size_t count, void *unused) |
| 1234 | cejka | 43 | { |
| 4692 | svoboda | 44 | return str_nlength(str, count); |
| 1234 | cejka | 45 | } |
| 46 | |||
| 4692 | svoboda | 47 | static int asprintf_wstr_write(const wchar_t *str, size_t count, void *unused) |
| 48 | { |
||
| 49 | return wstr_nlength(str, count); |
||
| 50 | } |
||
| 51 | |||
| 3351 | jermar | 52 | /** Allocate and print to string. |
| 53 | * |
||
| 4692 | svoboda | 54 | * @param strp Address of the pointer where to store the address of |
| 55 | * the newly allocated string. |
||
| 56 | * @fmt Format string. |
||
| 3351 | jermar | 57 | * |
| 4692 | svoboda | 58 | * @return Number of characters printed or a negative error code. |
| 59 | * |
||
| 3351 | jermar | 60 | */ |
| 3348 | jermar | 61 | int asprintf(char **strp, const char *fmt, ...) |
| 1234 | cejka | 62 | { |
| 2230 | jermar | 63 | struct printf_spec ps = { |
| 4692 | svoboda | 64 | asprintf_str_write, |
| 65 | asprintf_wstr_write, |
||
| 66 | NULL |
||
| 2230 | jermar | 67 | }; |
| 4692 | svoboda | 68 | |
| 3348 | jermar | 69 | va_list args; |
| 70 | va_start(args, fmt); |
||
| 4692 | svoboda | 71 | |
| 72 | int ret = printf_core(fmt, &ps, args); |
||
| 3348 | jermar | 73 | va_end(args); |
| 4692 | svoboda | 74 | |
| 3348 | jermar | 75 | if (ret > 0) { |
| 4692 | svoboda | 76 | *strp = malloc(STR_BOUNDS(ret) + 1); |
| 77 | if (*strp == NULL) |
||
| 3348 | jermar | 78 | return -1; |
| 4692 | svoboda | 79 | |
| 3348 | jermar | 80 | va_start(args, fmt); |
| 4692 | svoboda | 81 | vsnprintf(*strp, STR_BOUNDS(ret) + 1, fmt, args); |
| 82 | va_end(args); |
||
| 3348 | jermar | 83 | } |
| 4692 | svoboda | 84 | |
| 2209 | decky | 85 | return ret; |
| 1234 | cejka | 86 | } |
| 87 | |||
| 1866 | jermar | 88 | /** @} |
| 1653 | cejka | 89 | */ |