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context.h
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1/* Simple Plugin API */
2/* SPDX-FileCopyrightText: Copyright © 2023 Wim Taymans */
3/* SPDX-License-Identifier: MIT */
4
5#ifndef SPA_DEBUG_CONTEXT_H
6#define SPA_DEBUG_CONTEXT_H
7
8#ifdef __cplusplus
9 extern "C" {
10#endif
11
12#include <stdio.h>
13#include <stdarg.h>
14#include <ctype.h>
15
16#include <spa/utils/defs.h>
21
22#ifndef spa_debugn
23#define spa_debugn(_fmt,...) printf((_fmt), ## __VA_ARGS__)
24#endif
25#ifndef spa_debug
26#define spa_debug(_fmt,...) spa_debugn(_fmt"\n", ## __VA_ARGS__)
27#endif
28
29
30#ifndef SPA_API_DEBUG_CONTEXT
31 #ifdef SPA_API_IMPL
32 #define SPA_API_DEBUG_CONTEXT SPA_API_IMPL
33 #else
34 #define SPA_API_DEBUG_CONTEXT static inline
35 #endif
36#endif
37
38 struct spa_debug_context {
39 void (*log) (struct spa_debug_context *ctx, const char *fmt, ...) SPA_PRINTF_FUNC(2, 3);
40};
41
42#define spa_debugc(_c,_fmt,...) (_c)?((_c)->log((_c),_fmt, ## __VA_ARGS__)):(void)spa_debug(_fmt, ## __VA_ARGS__)
43
44 SPA_API_DEBUG_CONTEXT void spa_debugc_error_location(struct spa_debug_context *c,
45 struct spa_error_location *loc)
46{
47 int i, skip = loc->col > 80 ? loc->col - 40 : 0, lc = loc->col-skip-1;
48 char buf[80];
49
50 for (i = 0; (size_t)i < sizeof(buf)-1 && (size_t)(i + skip) < loc->len; i++) {
51 char ch = loc->location[i + skip];
52 if (ch == '\n' || ch == '\0')
53 break;
54 buf[i] = isspace(ch) ? ' ' : ch;
55 }
56 buf[i] = '\0';
57 spa_debugc(c, "line:%6d | %s%s", loc->line, skip ? "..." : "", buf);
58 for (i = 0; buf[i]; i++)
59 buf[i] = i < lc ? '-' : i == lc ? '^' : ' ';
60 spa_debugc(c, "column:%4d |-%s%s", loc->col, skip ? "---" : "", buf);
61}
62
66
67#ifdef __cplusplus
68} /* extern "C" */
69#endif
70
71#endif /* SPA_DEBUG_CONTEXT_H */
defs.h
spa/utils/defs.h
spa_debugc
#define spa_debugc(_c, _fmt,...)
Definition context.h:49
spa_debugc_error_location
SPA_API_DEBUG_CONTEXT void spa_debugc_error_location(struct spa_debug_context *c, struct spa_error_location *loc)
Definition context.h:51
SPA_API_DEBUG_CONTEXT
#define SPA_API_DEBUG_CONTEXT
Definition context.h:41
SPA_PRINTF_FUNC
#define SPA_PRINTF_FUNC(fmt, arg1)
Definition defs.h:295
spa_debug_context
Definition context.h:45
spa_debug_context::log
void(* log)(struct spa_debug_context *ctx, const char *fmt,...)
Definition context.h:46
spa_error_location
Definition defs.h:439
spa_error_location::line
int line
Definition defs.h:440
spa_error_location::location
const char * location
Definition defs.h:443
spa_error_location::col
int col
Definition defs.h:441
spa_error_location::len
size_t len
Definition defs.h:442