mirror of
https://github.com/lvgl/lvgl.git
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100 lines
2.4 KiB
C
100 lines
2.4 KiB
C
/**
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* @file lv_log.c
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*
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*/
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/*********************
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* INCLUDES
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*********************/
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#include "lv_log.h"
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#if LV_USE_LOG
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#include <stdarg.h>
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#include <string.h>
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#include "lv_printf.h"
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#if LV_LOG_PRINTF
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#include <stdio.h>
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#endif
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/*********************
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* DEFINES
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*********************/
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/**********************
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* TYPEDEFS
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**********************/
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/**********************
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* STATIC PROTOTYPES
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**********************/
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/**********************
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* STATIC VARIABLES
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**********************/
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static lv_log_print_g_cb_t custom_print_cb;
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/**********************
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* MACROS
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**********************/
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/**********************
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* GLOBAL FUNCTIONS
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**********************/
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/**
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* Register custom print/write function to call when a log is added.
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* It can format its "File path", "Line number" and "Description" as required
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* and send the formatted log message to a consol or serial port.
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* @param print_cb a function pointer to print a log
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*/
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void lv_log_register_print_cb(lv_log_print_g_cb_t print_cb)
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{
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custom_print_cb = print_cb;
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}
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/**
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* Add a log
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* @param level the level of log. (From `lv_log_level_t` enum)
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* @param file name of the file when the log added
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* @param line line number in the source code where the log added
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* @param func name of the function when the log added
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* @param format printf-like format string
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* @param ... parameters for `format`
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*/
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void _lv_log_add(lv_log_level_t level, const char * file, int line, const char * func, const char * format, ...)
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{
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if(level >= _LV_LOG_LEVEL_NUM) return; /*Invalid level*/
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if(level >= LV_LOG_LEVEL) {
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va_list args;
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va_start(args, format);
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char buf[256];
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lv_vsnprintf(buf, sizeof(buf), format, args);
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va_end(args);
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#if LV_LOG_PRINTF
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/*Use only the file name not the path*/
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size_t p;
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for(p = strlen(file); p > 0; p--) {
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if(file[p] == '/' || file[p] == '\\') {
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p++; /*Skip the slash*/
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break;
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}
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}
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static const char * lvl_prefix[] = {"Trace", "Info", "Warn", "Error", "User"};
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printf("%s: %s \t(%s #%d %s())\n", lvl_prefix[level], buf, &file[p], line, func);
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#else
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if(custom_print_cb) custom_print_cb(level, file, line, func, buf);
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#endif
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}
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}
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/**********************
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* STATIC FUNCTIONS
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**********************/
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#endif /*LV_USE_LOG*/
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