1 /**
2 * @file lv_log.c
3 *
4 */
5
6 /*********************
7 * INCLUDES
8 *********************/
9 #include "lv_log.h"
10 #if LV_USE_LOG
11
12 #include "../misc/lv_types.h"
13 #include "../stdlib/lv_sprintf.h"
14 #include "../stdlib/lv_mem.h"
15 #include "../stdlib/lv_string.h"
16 #include "../tick/lv_tick.h"
17 #include "../core/lv_global.h"
18
19 #if LV_LOG_PRINTF
20 #include <stdio.h>
21 #endif
22
23 /*********************
24 * DEFINES
25 *********************/
26 #if LV_LOG_USE_TIMESTAMP
27 #define last_log_time LV_GLOBAL_DEFAULT()->log_last_log_time
28 #endif
29 #define custom_print_cb LV_GLOBAL_DEFAULT()->custom_log_print_cb
30
31 #if LV_LOG_USE_TIMESTAMP
32 #define LOG_TIMESTAMP_FMT "\t(%" LV_PRIu32 ".%03" LV_PRIu32 ", +%" LV_PRIu32 ")\t"
33 #define LOG_TIMESTAMP_EXPR t / 1000, t % 1000, t - last_log_time,
34 #else
35 #define LOG_TIMESTAMP_FMT
36 #define LOG_TIMESTAMP_EXPR
37 #endif
38
39 #if LV_LOG_USE_FILE_LINE
40 #define LOG_FILE_LINE_FMT " %s:%d"
41 #define LOG_FILE_LINE_EXPR , &file[p], line
42 #else
43 #define LOG_FILE_LINE_FMT
44 #define LOG_FILE_LINE_EXPR
45 #endif
46
47 /**********************
48 * TYPEDEFS
49 **********************/
50
51 /**********************
52 * STATIC PROTOTYPES
53 **********************/
54
55 /**********************
56 * STATIC VARIABLES
57 **********************/
58
59 /**********************
60 * MACROS
61 **********************/
62
63 /**********************
64 * GLOBAL FUNCTIONS
65 **********************/
66
lv_log_register_print_cb(lv_log_print_g_cb_t print_cb)67 void lv_log_register_print_cb(lv_log_print_g_cb_t print_cb)
68 {
69 custom_print_cb = print_cb;
70 }
71
lv_log_add(lv_log_level_t level,const char * file,int line,const char * func,const char * format,...)72 void lv_log_add(lv_log_level_t level, const char * file, int line, const char * func, const char * format, ...)
73 {
74 if(level >= LV_LOG_LEVEL_NUM) return; /*Invalid level*/
75
76 if(level >= LV_LOG_LEVEL) {
77 va_list args;
78 va_start(args, format);
79
80 #if LV_LOG_USE_FILE_LINE
81 /*Use only the file name not the path*/
82 size_t p;
83 for(p = lv_strlen(file); p > 0; p--) {
84 if(file[p] == '/' || file[p] == '\\') {
85 p++; /*Skip the slash*/
86 break;
87 }
88 }
89 #else
90 LV_UNUSED(file);
91 LV_UNUSED(line);
92 #endif
93
94 #if LV_LOG_USE_TIMESTAMP
95 uint32_t t = lv_tick_get();
96 #endif
97 static const char * lvl_prefix[] = {"Trace", "Info", "Warn", "Error", "User"};
98
99 #if LV_LOG_PRINTF
100 printf("[%s]" LOG_TIMESTAMP_FMT " %s: ",
101 lvl_prefix[level], LOG_TIMESTAMP_EXPR func);
102 vprintf(format, args);
103 printf(LOG_FILE_LINE_FMT "\n" LOG_FILE_LINE_EXPR);
104 fflush(stdout);
105 #endif
106 if(custom_print_cb) {
107 char buf[512];
108 char msg[256];
109 lv_vsnprintf(msg, sizeof(msg), format, args);
110 lv_snprintf(buf, sizeof(buf), "[%s]" LOG_TIMESTAMP_FMT " %s: %s" LOG_FILE_LINE_FMT "\n",
111 lvl_prefix[level], LOG_TIMESTAMP_EXPR func, msg LOG_FILE_LINE_EXPR);
112 custom_print_cb(level, buf);
113 }
114
115 #if LV_LOG_USE_TIMESTAMP
116 last_log_time = t;
117 #endif
118 va_end(args);
119 }
120 }
121
lv_log(const char * format,...)122 void lv_log(const char * format, ...)
123 {
124 if(LV_LOG_LEVEL >= LV_LOG_LEVEL_NONE) return; /* disable log */
125
126 va_list args;
127 va_start(args, format);
128
129 #if LV_LOG_PRINTF
130 vprintf(format, args);
131 #else
132 if(custom_print_cb) {
133 char buf[512];
134 lv_vsnprintf(buf, sizeof(buf), format, args);
135 custom_print_cb(LV_LOG_LEVEL_USER, buf);
136 }
137 #endif
138
139 va_end(args);
140 }
141
142 /**********************
143 * STATIC FUNCTIONS
144 **********************/
145
146 #endif /*LV_USE_LOG*/
147
