54 lines
1.0 KiB
C
54 lines
1.0 KiB
C
#include <stdio.h>
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#include <stdlib.h>
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#include <time.h>
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#include <stdarg.h>
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#include <errno.h>
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#include <string.h>
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static FILE *log_fd = NULL;
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void log_close() {
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fclose(log_fd);
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}
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void log_open(char *logfile) {
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if ((log_fd = fopen(logfile, "a" )) == NULL) {
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fprintf(stderr, "log_open(\"%s\"): %s\n", logfile, strerror(errno));
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exit(-1);
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}
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if (atexit(log_close) != 0) {
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fprintf(stderr, "log_open(): atexit(): %s\n", strerror(errno));
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exit(-1);
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}
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}
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void log_print(const char *fmt, ...) {
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va_list az;
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time_t tzgr;
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char tbuf[64];
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char buffer[256];
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va_start(az, fmt);
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vsprintf(buffer, fmt, az);
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va_end(az);
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time(&tzgr);
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strftime(tbuf, 64, "%b %d %H:%M:%S :", localtime(&tzgr));
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if (log_fd) {
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if (errno) {
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fprintf(log_fd, "%s %s: %s\n", tbuf, buffer, strerror(errno));
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} else {
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fprintf(log_fd, "%s %s\n", tbuf, buffer);
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}
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} else {
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if (errno) {
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fprintf(stderr, "%s %s: %s\n", tbuf, buffer, strerror(errno));
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} else {
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fprintf(stderr, "%s %s\n", tbuf, buffer);
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}
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}
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errno = 0;
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fflush(log_fd);
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}
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