log.c

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#include <kiba/core/log.h>
 
#include <kiba/core/memory.h>
#include <kiba/format/format.h>
#include <kiba/platform/console.h>
 
static const char *level_names[LOG_LEVEL_MAX] = {
    "[FATAL]",  // LOG_LEVEL_FATAL
    "[ERROR]",  // LOG_LEVEL_ERROR
    "[WARN ]",  // LOG_LEVEL_WARN
    "[INFO ]",  // LOG_LEVEL_INFO
    "[DEBUG]",  // LOG_LEVEL_DEBUG
    "[TRACE]"   // LOG_LEVEL_TRACE
};
 
static log_level stacktrace_level = LOG_LEVEL_MAX;
static log_level active_log_level = LOG_LEVEL_TRACE;
 
void enable_stacktraces(log_level level) { stacktrace_level = level; }
 
void disable_stacktraces(void) { stacktrace_level = LOG_LEVEL_MAX; }
 
void log_set_active_level(log_level level) { active_log_level = level; }
 
void write_log_entry(log_level level, const char *file, long int line, const char *msg, ...) {
    if (active_log_level != LOG_LEVEL_MAX && level <= active_log_level) {
        char          log_message[KB_MAX_LOG_ENTRY_SIZE] = {0};
        format_buffer buf;
        VA_LIST       args;
        VA_START(args, msg);
        if (format_buffer_create_static(&buf, FORMAT_BUFFER_WRITE, log_message, KB_MAX_LOG_ENTRY_SIZE)
            && format(&buf, "{raw_string} {raw_string}:{i64} ", level_names[level], file, line)
            && format_va_list(&buf, msg, &args) && format_buffer_add_char(&buf, '\n')) {
            write_to_console(level, log_message);
            if (stacktrace_level != LOG_LEVEL_MAX && level <= stacktrace_level) {
                platform_print_stacktrace();
            }
        }
        VA_END(args);
    }
}
 
void write_to_console(log_level level, const char *msg) {
    if (level < LOG_LEVEL_WARN) {
        platform_console_write_error(msg, (u8) level);
    } else {
        platform_console_write(msg, (u8) level);
    }
}