output.h revision e19b781a8f41f379fa0890edd2ffc768bfb44d94 
1/*
2 * This file is part of ltrace.
3 * Copyright (C) 2011, 2012 Petr Machata, Red Hat Inc.
4 * Copyright (C) 2009 Juan Cespedes
5 *
6 * This program is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU General Public License as
8 * published by the Free Software Foundation; either version 2 of the
9 * License, or (at your option) any later version.
10 *
11 * This program is distributed in the hope that it will be useful, but
12 * WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
14 * General Public License for more details.
15 *
16 * You should have received a copy of the GNU General Public License
17 * along with this program; if not, write to the Free Software
18 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
19 * 02110-1301 USA
20 */
21#ifndef _OUTPUT_H_
22#define _OUTPUT_H_
23
24#include "fetch.h"
25#include "forward.h"
26
27void output_line(struct Process *proc, const char *fmt, ...);
28void output_left(enum tof type, struct Process *proc,
29		 struct library_symbol *libsym);
30void output_right(enum tof type, struct Process *proc,
31		  struct library_symbol *libsym);
32
33/* This function is for emitting lists of comma-separated strings.
34 *
35 * STREAM is where the output should be eventually sent.
36 *
37 * WRITER is the function to do the output.  It returns number of
38 * characters written, or a negative value if there were errors (like
39 * what fprintf does).  If WRITER returns 0, it means nothing was
40 * written, and separator shouldn't therefore be emitted as a
41 * separator either.
42 *
43 * NEED_DELIMP serves for keeping state between calls.  It should
44 * point to a variable that is initialized to 0.  DATA is passed
45 * verbatim to the WRITER.
46 *
47 * Returns number of characters written to STREAM (including any
48 * separators), or a negative value if there were errors.  */
49int delim_output(FILE *stream, int *need_delimp,
50		 int (*writer)(FILE *stream, void *data), void *data);
51
52/* If C is positive, add it to *COUNTP.  Returns C.  */
53int account_output(int *countp, int c);
54
55void report_error(char const *file, unsigned line_no, const char *fmt, ...);
56void report_warning(char const *file, unsigned line_no, const char *fmt, ...);
57void report_global_error(const char *fmt, ...);
58
59#endif /* _OUTPUT_H_ */
60