| 1 | /* |
| 2 | * This file is part of DisOrder |
| 3 | * Copyright (C) 2004-2009 Richard Kettlewell |
| 4 | * |
| 5 | * This program is free software: you can redistribute it and/or modify |
| 6 | * it under the terms of the GNU General Public License as published by |
| 7 | * the Free Software Foundation, either version 3 of the License, or |
| 8 | * (at your option) any later version. |
| 9 | * |
| 10 | * This program is distributed in the hope that it will be useful, |
| 11 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 12 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 13 | * GNU General Public License for more details. |
| 14 | * |
| 15 | * You should have received a copy of the GNU General Public License |
| 16 | * along with this program. If not, see <http://www.gnu.org/licenses/>. |
| 17 | */ |
| 18 | /** @file lib/asprintf.c @brief printf() workalikes */ |
| 19 | |
| 20 | #include "common.h" |
| 21 | |
| 22 | #include <stdarg.h> |
| 23 | #include <stddef.h> |
| 24 | #include <errno.h> |
| 25 | |
| 26 | #include "printf.h" |
| 27 | #include "log.h" |
| 28 | #include "sink.h" |
| 29 | #include "mem.h" |
| 30 | #include "vector.h" |
| 31 | |
| 32 | /** @brief vasprintf() workalike without encoding errors |
| 33 | * |
| 34 | * This acts like vasprintf() except that it does not throw an error |
| 35 | * if you use a string outside the current locale's encoding rules, |
| 36 | * and it uses the memory allocation calls from @ref mem.h. |
| 37 | */ |
| 38 | int byte_vasprintf(char **ptrp, |
| 39 | const char *fmt, |
| 40 | va_list ap) { |
| 41 | struct sink *s; |
| 42 | struct dynstr d; |
| 43 | int n; |
| 44 | |
| 45 | dynstr_init(&d); |
| 46 | s = sink_dynstr(&d); |
| 47 | n = byte_vsinkprintf(s, fmt, ap); |
| 48 | xfree(s); |
| 49 | if(n >= 0) { |
| 50 | dynstr_terminate(&d); |
| 51 | *ptrp = d.vec; |
| 52 | } |
| 53 | return n; |
| 54 | } |
| 55 | |
| 56 | /** @brief asprintf() workalike without encoding errors |
| 57 | * |
| 58 | * This acts like asprintf() except that it does not throw an error |
| 59 | * if you use a string outside the current locale's encoding rules, |
| 60 | * and it uses the memory allocation calls from @ref mem.h. |
| 61 | */ |
| 62 | int byte_asprintf(char **ptrp, |
| 63 | const char *fmt, |
| 64 | ...) { |
| 65 | int n; |
| 66 | va_list ap; |
| 67 | |
| 68 | va_start(ap, fmt); |
| 69 | n = byte_vasprintf(ptrp, fmt, ap); |
| 70 | va_end(ap); |
| 71 | return n; |
| 72 | } |
| 73 | |
| 74 | /** @brief asprintf() workalike without encoding errors |
| 75 | * |
| 76 | * This acts like asprintf() except that it does not throw an error if |
| 77 | * you use a string outside the current locale's encoding rules; it |
| 78 | * uses the memory allocation calls from @ref mem.h; and it terminates |
| 79 | * the program on error. |
| 80 | */ |
| 81 | int byte_xasprintf(char **ptrp, |
| 82 | const char *fmt, |
| 83 | ...) { |
| 84 | int n; |
| 85 | va_list ap; |
| 86 | |
| 87 | va_start(ap, fmt); |
| 88 | n = byte_xvasprintf(ptrp, fmt, ap); |
| 89 | va_end(ap); |
| 90 | return n; |
| 91 | } |
| 92 | |
| 93 | /** @brief vasprintf() workalike without encoding errors |
| 94 | * |
| 95 | * This acts like vasprintf() except that it does not throw an error |
| 96 | * if you use a string outside the current locale's encoding rules; it |
| 97 | * uses the memory allocation calls from @ref mem.h; and it terminates |
| 98 | * the program on error. |
| 99 | */ |
| 100 | int byte_xvasprintf(char **ptrp, |
| 101 | const char *fmt, |
| 102 | va_list ap) { |
| 103 | int n; |
| 104 | |
| 105 | if((n = byte_vasprintf(ptrp, fmt, ap)) < 0) |
| 106 | disorder_fatal(errno, "error calling byte_vasprintf"); |
| 107 | return n; |
| 108 | } |
| 109 | |
| 110 | /* |
| 111 | Local Variables: |
| 112 | c-basic-offset:2 |
| 113 | comment-column:40 |
| 114 | End: |
| 115 | */ |