| | 1 | /* |
| | 2 | * This file is part of DisOrder |
| | 3 | * Copyright (C) 2004 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 2 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, but |
| | 11 | * WITHOUT ANY WARRANTY; without even the implied warranty of |
| | 12 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| | 13 | * 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, write to the Free Software |
| | 17 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 |
| | 18 | * USA |
| | 19 | */ |
| | 20 | |
| | 21 | #ifndef SINK_H |
| | 22 | #define SINK_H |
| | 23 | |
| | 24 | /* a sink is something you write to (the opposite would be a source) */ |
| | 25 | |
| | 26 | struct dynstr; |
| | 27 | |
| | 28 | struct sink { |
| | 29 | int (*write)(struct sink *s, const void *buffer, int nbytes); |
| | 30 | /* return >= 0 on success, -1 on error */ |
| | 31 | }; |
| | 32 | |
| | 33 | struct sink *sink_stdio(const char *name, FILE *fp); |
| | 34 | /* return a sink which writes to @fp@. If @name@ is not a null |
| | 35 | * pointer, it will be used in (fatal) error messages; if it is a null |
| | 36 | * pointer then errors will be signalled by returning -1. */ |
| | 37 | |
| | 38 | struct sink *sink_dynstr(struct dynstr *output); |
| | 39 | /* return a sink which appends to @output@. */ |
| | 40 | |
| | 41 | int sink_vprintf(struct sink *s, const char *fmt, va_list ap); |
| | 42 | int sink_printf(struct sink *s, const char *fmt, ...) |
| | 43 | attribute((format (printf, 2, 3))); |
| | 44 | /* equivalent of vfprintf/fprintf for sink @s@ */ |
| | 45 | |
| | 46 | static inline int sink_write(struct sink *s, const void *buffer, int nbytes) { |
| | 47 | return s->write(s, buffer, nbytes); |
| | 48 | } |
| | 49 | |
| | 50 | static inline int sink_writes(struct sink *s, const char *str) { |
| | 51 | return s->write(s, str, strlen(str)); |
| | 52 | } |
| | 53 | |
| | 54 | static inline int sink_writec(struct sink *s, char c) { |
| | 55 | return s->write(s, &c, 1); |
| | 56 | } |
| | 57 | |
| | 58 | #endif /* SINK_H */ |
| | 59 | |
| | 60 | |
| | 61 | /* |
| | 62 | Local Variables: |
| | 63 | c-basic-offset:2 |
| | 64 | comment-column:40 |
| | 65 | End: |
| | 66 | */ |
~mdw / disorder / blame_incremental