add logger object and timers

LLog.c

@@ -1,11 +1,50 @@
 #include "include/LLog.h"
+#include <string.h>
 #include <stdio.h>
+#include <stdlib.h>
+#include "time.h"
 
-void lLog(enum lLogLevel LOG_LEVEL, char* MESSAGE) {
+int timer_array_append(timer_array* array, lTimer timer) {
+    if (array->count >= array->capacity) {
+        if (array->capacity == 0) array->capacity = 8;
+        else array->capacity *= 2;
+
+        array->items = realloc(array->items, array->capacity * sizeof(*array->items));
+    }
+    array->items[array->count++] = timer;
+    return array->count - 1;
+}
+
+int create_timer(Logger* logger) {
+    return timer_array_append(&logger->timers, (lTimer){});
+}
+
+void start_timer(Logger* logger, int timer_id) {
+    if (logger->timers.count < (timer_id + 1)) return;
+    logger->timers.items[timer_id].time.start = time(NULL);
+}
+
+void stop_timer(Logger* logger, int timer_id) {
+    if (logger->timers.count < (timer_id + 1)) return;
+    logger->timers.items[timer_id].time.end = time(NULL);
+}
+
+lLogString to_lLogString(const char* string) {
+    lLogString str;
+    str.buf = (char *)string;
+    if (string == NULL) {
+        str.len = 0;
+    } else {
+        str.len = strlen(string);
+    }
+    return str;
+};
+
+void lLog(Logger logger, enum lLogLevel LOG_LEVEL, lLogString MESSAGE) {
     char* LOG_LEVEL_STRING = LOG_LEVEL == 0 ? "INFO" :
                              LOG_LEVEL == 1 ? "WARNING" :
                              LOG_LEVEL == 2 ? "ERROR" :
                              LOG_LEVEL == 3 ? "DEBUG" :
                              "invalid_log_level";
-    printf("[%s]: %s\n", LOG_LEVEL_STRING, MESSAGE);
+    printf("[%s]: %.*s\n", LOG_LEVEL_STRING, (int)MESSAGE.len, MESSAGE.buf);
 }

include/LLog.h

@@ -1,6 +1,13 @@
 #ifndef LLog_H
 #define LLog_H
 
+#include "time.h"
+
+typedef struct {
+    char *buf;
+    size_t len;
+} lLogString;
+
 enum lLogLevel {
     lINFO,
     lWARNING,
@@ -8,6 +15,34 @@ enum lLogLevel {
     lDEBUG
 };
 
-void lLog(enum lLogLevel LOG_LEVEL, char* MESSAGE);
+typedef struct {
+    time_t start;
+    time_t end;
+} lTimespan;
+
+typedef struct {
+    lTimespan time;
+} lTimer;
+
+typedef struct {
+    size_t count;
+    size_t capacity;
+    lTimer* items;
+} timer_array;
+
+int timer_array_append(timer_array* array, lTimer timer);
+
+typedef struct {
+    lLogString logfolder;
+    timer_array timers;
+} Logger;
+
+int create_timer(Logger* logger);
+void start_timer(Logger* logger, int timer_id);
+void stop_timer(Logger* logger, int timer_id);
+
+lLogString to_lLogString(const char* string);
+
+void lLog(Logger logger, enum lLogLevel LOG_LEVEL, lLogString MESSAGE);
 
 #endif

test/test.c

@@ -1,8 +1,20 @@
 #include "../include/LLog.h"
+#include <stdio.h>
+#include <unistd.h>
 
 int main(void) {
-    lLog(lINFO, "Hello, INFO!");
-    lLog(lWARNING, "Hello, WARNING!");
-    lLog(lERROR, "Hello, ERROR!");
-    lLog(lDEBUG, "Hello, DEBUG!");
+    Logger logger = {0};
+    lLog(logger, lINFO, to_lLogString("Hello, INFO!"));
+    lLog(logger, lWARNING, to_lLogString("Hello, WARNING!"));
+    lLog(logger, lERROR, to_lLogString("Hello, ERROR!"));
+    lLog(logger, lDEBUG, to_lLogString("Hello, DEBUG!"));
+
+    int timer = create_timer(&logger);
+    lTimespan* time_object = &logger.timers.items[timer].time;
+    start_timer(&logger, timer);
+    
+    sleep(5);
+    
+    stop_timer(&logger, timer);
+    printf("\n%f seconds.\n", difftime(time_object->end, time_object->start));
 }