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trace.c
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#include <stdio.h>
#include <stdarg.h>
#include <stdlib.h>
#include <string.h>
#include "trace.h"
#define ARRAY_SIZE(x) (sizeof(x)/sizeof((x)[0]))
static trace_level_t trace_level = TRACE;
static const char *trace_prefix;
static const char *level2char[] = {
"TRACE",
"DEBUG",
"NOTICE",
"WARNING",
"ERROR",
"CRITICAL",
"FATAL",
};
trace_level_t trace_char2level(const char *clvl)
{
int i;
for (i = 0; i < ARRAY_SIZE(level2char); i++)
if (!strcmp(level2char[i], clvl))
return i;
return -1;
}
void trace(trace_level_t lvl, char *fmt, ...)
{
va_list args;
if (lvl < trace_level)
return;
printf("%s", level2char[lvl]);
if (trace_prefix)
printf("(%s): ", trace_prefix);
else
printf(": ");
va_start(args, fmt);
vprintf(fmt, args);
va_end(args);
}
int trace_set_level(trace_level_t lvl)
{
if (lvl < TRACE && lvl > FATAL)
return -1;
trace_level = lvl;
return 0;
}
void trace_set_prefix(const char *prefix)
{
if (prefix)
trace_prefix = prefix;
}
void trace_raw(trace_level_t lvl, char *fmt, ...)
{
va_list args;
if (lvl < trace_level)
return;
va_start(args, fmt);
vprintf(fmt, args);
va_end(args);
fflush(stdout);
}