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Merge pull request 'Log File' (#9) from logger/file into main

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Reviewed-on: #9
This commit was merged in pull request #9.
This commit is contained in:
Wesley Irvin
2024-02-10 19:04:11 +00:00
parent 78798a42fd 446fa704cc
commit 3667b777f2
1 changed files with 30 additions and 5 deletions
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35
quantum/src/logger/logger.c
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@@ -4,6 +4,7 @@
#include <stdarg.h> #include <stdarg.h>
#include <stdio.h> #include <stdio.h>
#include <string.h> #include <string.h>
#include <time.h>
typedef enum level_color { typedef enum level_color {
COLOR_FATAL, COLOR_FATAL,
@@ -20,16 +21,37 @@ void send_to_console(const char *message, level_color color) {
} }
void send_to_error_log(const char *message) { void send_to_error_log(const char *message) {
// TODO: Add in file handling here so that we can write the log messages // First we need to open up our log file to append to it
// to file as well instead of just to console FILE *log_file = fopen("./quantum.log", "a");
printf("send_to_error_log() called...\n"); // Lets make sure we actually opened the file, and if not we return
if (log_file == NULL) {
send_to_console("[ERROR]: Could not open log file.", COLOR_ERROR);
return;
}
// Now we just need to write our message to the file
int chars_written = fprintf(log_file, "%s\n", message);
// fprintf returns a negative number on an error so let's check for that and
// display an error message
if (chars_written < 0) {
send_to_console("[ERROR]: Could not write to log file.", COLOR_ERROR);
}
// Now we need to make sure we close the file so that we do not leak
fclose(log_file);
} }
void log_output(log_level level, const char *message, ...) { void log_output(log_level level, const char *message, ...) {
const char *level_strings[] = { const char *level_strings[] = {
"[FATAL]: ", "[ERROR]: ", "[WARN]: ", "[INFO]: ", "[DEBUG]: "}; "[FATAL]: ", "[ERROR]: ", "[WARN]: ", "[INFO]: ", "[DEBUG]: "};
// We are going to want to put a timestamp on our logs so lets get the current
// time and convert it into localtime
time_t cur_time = time(NULL);
struct tm local_time = *localtime(&cur_time);
// We are going to impose a 32K char limit on a single log entry // We are going to impose a 32K char limit on a single log entry
// we will hold this in format_message as a place to collect all // we will hold this in format_message as a place to collect all
// the variadic arguments and process them together. We make sure // the variadic arguments and process them together. We make sure
@@ -45,9 +67,12 @@ void log_output(log_level level, const char *message, ...) {
vsnprintf(format_message, msg_length, message, arg_ptr); vsnprintf(format_message, msg_length, message, arg_ptr);
va_end(arg_ptr); va_end(arg_ptr);
// Now we prepend the message with our message level // Now we prepend the message with a timestamp and our message level
char log_message[msg_length]; char log_message[msg_length];
sprintf(log_message, "%s%s", level_strings[level], format_message); sprintf(log_message, "[%02d-%02d-%d %02d:%02d:%02d]%s%s",
local_time.tm_mon + 1, local_time.tm_mday, local_time.tm_year + 1900,
local_time.tm_hour, local_time.tm_min, local_time.tm_sec,
level_strings[level], format_message);
// Now we call the appropriate function depending on the level // Now we call the appropriate function depending on the level
if (level <= 1) { if (level <= 1) {