add logger object and timers

.gitignore

@@ -0,0 +1 @@
+build/

LLog.c

@@ -0,0 +1,50 @@
+#include "include/LLog.h"
+#include <string.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include "time.h"
+
+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, (int)MESSAGE.len, MESSAGE.buf);
+}

Makefile

@@ -0,0 +1,91 @@
+# You may have to run this command or something similar
+# while in the base directory to please the dynamic linker
+#
+# $ export LD_LIBRARY_PATH="$LD_LIBRARY_PATH:$PWD/build/dynamic"
+
+CC = gcc
+SHELL := /bin/bash
+
+INCLUDE := include
+CFLAGS = -Wall -I$(INCLUDE) -ggdb
+
+BUILD_DIR := build
+
+STATIC_BUILD_DIR := $(BUILD_DIR)/static
+DYNAMIC_BUILD_DIR := $(BUILD_DIR)/dynamic
+TEST_BUILD_DIR := $(BUILD_DIR)/test
+INCLUDE_INSTALL_PATH := /usr/local/include/LLog
+LIB_INSTALL_PATH := /usr/local/lib
+
+STATIC_BUILD_FILES := $(STATIC_BUILD_DIR)/LLog.o \
+
+DYNAMIC_BUILD_FILES := $(DYNAMIC_BUILD_DIR)/LLog.o \
+
+TEST_BUILD_FILES := $(TEST_BUILD_DIR)/test.o \
+
+
+all: dynamic static
+
+dynamic: $(DYNAMIC_BUILD_FILES)
+	$(CC) -shared -o $(DYNAMIC_BUILD_DIR)/libLLog.so $(DYNAMIC_BUILD_FILES)
+
+$(DYNAMIC_BUILD_DIR)/%.o: %.c | $(DYNAMIC_BUILD_DIR)
+	$(CC) $(CFLAGS) -c -fPIC $< -o $@
+
+
+static: $(STATIC_BUILD_FILES)
+	ar rcs $(STATIC_BUILD_DIR)/libLLog.a $(STATIC_BUILD_FILES)
+
+$(STATIC_BUILD_DIR)/%.o: %.c | $(STATIC_BUILD_DIR)
+	$(CC) $(CFLAGS) -c $< -o $@
+
+test: $(TEST_BUILD_FILES) test_dynamic test_static
+	
+test_dynamic: dynamic $(TEST_BUILD_FILES)
+	$(CC) $(CFLAGS) -L$(CURDIR)/$(DYNAMIC_BUILD_DIR) -lLLog -o $(TEST_BUILD_DIR)/test_dynamic $(TEST_BUILD_FILES)
+	
+	@echo ""
+	@echo "Running dynamic test..."
+	@echo ""
+
+	LD_LIBRARY_PATH=$(LD_LIBRARY_PATH):$(CURDIR)/build/dynamic ./$(TEST_BUILD_DIR)/test_dynamic
+
+test_static: static $(TEST_BUILD_FILES)
+	$(CC) $(CFLAGS) -o $(TEST_BUILD_DIR)/test_static $(TEST_BUILD_FILES) $(STATIC_BUILD_DIR)/libLLog.a
+	
+	@echo ""
+	@echo "Running static test..."
+	@echo ""
+	
+	./$(TEST_BUILD_DIR)/test_static
+
+$(TEST_BUILD_DIR)/%.o: test/%.c | $(TEST_BUILD_DIR)
+	$(CC) $(CFLAGS) -c $< -o $@
+
+
+$(DYNAMIC_BUILD_DIR):
+	mkdir -p $(DYNAMIC_BUILD_DIR)
+
+$(STATIC_BUILD_DIR):
+	mkdir -p $(STATIC_BUILD_DIR)
+
+$(TEST_BUILD_DIR):
+	mkdir -p $(TEST_BUILD_DIR)
+
+$(INCLUDE_INSTALL_PATH):
+	mkdir -p $(INCLUDE_INSTALL_PATH)
+
+$(LIB_INSTALL_PATH):
+	mkdir -p $(LIB_INSTALL_PATH)
+
+CLEANUP_BUILD_DIR:
+	rm -rf $(BUILD_DIR)/*/*.o $(BUILD_DIR)/test
+
+install: $(INCLUDE_INSTALL_PATH) $(LIB_INSTALL_PATH) CLEANUP_BUILD_DIR
+	cp $(INCLUDE)/* $(INCLUDE_INSTALL_PATH)
+	cp $(STATIC_BUILD_DIR)/* $(LIB_INSTALL_PATH)
+	cp $(DYNAMIC_BUILD_DIR)/* $(LIB_INSTALL_PATH)
+	ldconfig
+
+clean:
+	rm -rf $(BUILD_DIR)

include/LLog.h

@@ -0,0 +1,48 @@
+#ifndef LLog_H
+#define LLog_H
+
+#include "time.h"
+
+typedef struct {
+    char *buf;
+    size_t len;
+} lLogString;
+
+enum lLogLevel {
+    lINFO,
+    lWARNING,
+    lERROR,
+    lDEBUG
+};
+
+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

@@ -0,0 +1,20 @@
+#include "../include/LLog.h"
+#include <stdio.h>
+#include <unistd.h>
+
+int main(void) {
+    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));
+}