| 1 | /* |
| 2 | * This file is part of DisOrder |
| 3 | * Copyright (C) 2005, 2007, 2008 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/eventlog.c |
| 19 | * @brief Event logging |
| 20 | */ |
| 21 | #include "common.h" |
| 22 | |
| 23 | #include <stdarg.h> |
| 24 | |
| 25 | #include "mem.h" |
| 26 | #include "vector.h" |
| 27 | #include "printf.h" |
| 28 | #include "eventlog.h" |
| 29 | #include "split.h" |
| 30 | |
| 31 | static struct eventlog_output *outputs; |
| 32 | |
| 33 | void eventlog_add(struct eventlog_output *lo) { |
| 34 | lo->next = outputs; |
| 35 | outputs = lo; |
| 36 | } |
| 37 | |
| 38 | void eventlog_remove(struct eventlog_output *lo) { |
| 39 | struct eventlog_output *p, **pp; |
| 40 | |
| 41 | for(pp = &outputs; (p = *pp) && p != lo; pp = &p->next) |
| 42 | ; |
| 43 | if(p == lo) |
| 44 | *pp = lo->next; |
| 45 | } |
| 46 | |
| 47 | static void veventlog(const char *keyword, const char *raw, va_list ap) { |
| 48 | struct eventlog_output *p, *pnext; |
| 49 | struct dynstr d; |
| 50 | const char *param; |
| 51 | |
| 52 | dynstr_init(&d); |
| 53 | dynstr_append_string(&d, keyword); |
| 54 | while((param = va_arg(ap, const char *))) { |
| 55 | dynstr_append(&d, ' '); |
| 56 | dynstr_append_string(&d, quoteutf8(param)); |
| 57 | } |
| 58 | if(raw) { |
| 59 | dynstr_append(&d, ' '); |
| 60 | dynstr_append_string(&d, raw); |
| 61 | } |
| 62 | dynstr_terminate(&d); |
| 63 | for(p = outputs; p; p = pnext) { |
| 64 | /* We must be able to cope with eventlog_remove() being called from inside |
| 65 | * the callback */ |
| 66 | pnext = p->next; |
| 67 | p->fn(d.vec, p->user); |
| 68 | } |
| 69 | } |
| 70 | |
| 71 | void eventlog_raw(const char *keyword, const char *raw, ...) { |
| 72 | va_list ap; |
| 73 | |
| 74 | va_start(ap, raw); |
| 75 | veventlog(keyword, raw, ap); |
| 76 | va_end(ap); |
| 77 | } |
| 78 | |
| 79 | void eventlog(const char *keyword, ...) { |
| 80 | va_list ap; |
| 81 | |
| 82 | va_start(ap, keyword); |
| 83 | veventlog(keyword, 0, ap); |
| 84 | va_end(ap); |
| 85 | } |
| 86 | |
| 87 | /* |
| 88 | Local Variables: |
| 89 | c-basic-offset:2 |
| 90 | comment-column:40 |
| 91 | fill-column:79 |
| 92 | End: |
| 93 | */ |