anth64
110b7ffca8
BREAKING CHANGE: stk_log() signature changed to require log level - Add log levels (ERROR, WARN, INFO, DEBUG) with runtime filtering - Add timestamps (yyyy-mm-dd HH:MM:SS.mmm format) - Add stk_set_log_output(), stk_set_log_prefix(), stk_set_log_level() - Platform-specific timestamp: GetLocalTime (Windows), gettimeofday (POSIX) - Consolidate duplicate platform includes into POSIX common block - Setting log output to NULL disables logging. Default: INFO level, "stk" prefix, stdout output. All internal messages use appropriate severity levels. Single byte flag controls enable/disable.
87 lines
1.7 KiB
C
87 lines
1.7 KiB
C
#include "stk_log.h"
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#include "stk.h"
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#include <stdarg.h>
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#include <stdio.h>
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#include <string.h>
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#define STK_LOG_TIMESTAMP_BUFFER 32
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extern unsigned char stk_flags;
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void platform_get_timestamp(char *buffer, size_t size);
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static FILE *log_output = NULL;
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static char log_prefix[STK_LOG_PREFIX_BUFFER] = "stk";
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static stk_log_level_t min_log_level = STK_LOG_INFO;
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static const char *get_level_string(stk_log_level_t level)
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{
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char *level_str = "";
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switch (level) {
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case STK_LOG_ERROR:
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level_str = "ERROR";
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break;
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case STK_LOG_WARN:
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level_str = "WARN";
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break;
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case STK_LOG_INFO:
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level_str = "INFO";
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break;
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case STK_LOG_DEBUG:
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level_str = "DEBUG";
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break;
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}
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return level_str;
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}
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void stk_set_log_output(FILE *fp)
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{
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if (fp == NULL)
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stk_flags &= ~STK_FLAG_LOGGING_ENABLED;
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log_output = fp;
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}
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void stk_set_log_prefix(const char *prefix)
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{
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if (!prefix) {
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log_prefix[0] = '\0';
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return;
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}
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strncpy(log_prefix, prefix, STK_LOG_PREFIX_BUFFER - 1);
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log_prefix[STK_LOG_PREFIX_BUFFER - 1] = '\0';
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}
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void stk_set_log_level(stk_log_level_t level) { min_log_level = level; }
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void stk_log(stk_log_level_t level, const char *fmt, ...)
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{
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FILE *output;
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const char *level_str;
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char timestamp[STK_LOG_TIMESTAMP_BUFFER];
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va_list args;
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if (!(stk_flags & STK_FLAG_LOGGING_ENABLED))
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return;
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if (level < min_log_level)
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return;
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output = log_output ? log_output : stdout;
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level_str = get_level_string(level);
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platform_get_timestamp(timestamp, sizeof(timestamp));
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if (log_prefix[0] != '\0')
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fprintf(output, "%s [%s] [%s] ", timestamp, log_prefix,
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level_str);
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else
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fprintf(output, "%s [%s] ", timestamp, level_str);
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va_start(args, fmt);
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vfprintf(output, fmt, args);
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va_end(args);
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fputc('\n', output);
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}
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