Added a cache system for slower machines (fix #118, fix #140)

This commit adds the option to read a pregenerated cache, to improve  speed on low spec systems.  The cache system is not fully working (apple users do not get pkg info  and upti    me is not updated) and to use it the `$UWUFETCH_CACHE_ENABLED`  must be set to `TRUE`, `true` or just `1`

uwufetch.c

@@ -96,7 +96,7 @@ int ascii_image_flag = 0, // when (0) ascii is printed, when (1) image is printe
 
 char user[32], host[256], shell[64], host_model[256], kernel[256], version_name[64], cpu_model[256],
 	gpu_model[64][256],
-	pkgman_name[64], image_name[128], *config_directory = NULL;
+	pkgman_name[64], image_name[128], *config_directory = NULL, *cache_content = NULL;
 
 // functions definitions, to use them in main()
 int pkgman();
@@ -108,28 +108,48 @@ void replace_ignorecase(char *original, char *search, char *replacer);
 void print_ascii();
 void print_unknown_ascii();
 void print_info();
+int write_cache();
+int read_cache();
 void print_image();
 void usage(char *);
 void uwu_kernel();
 void uwu_hw(char *);
 void uwu_name();
-void truncate_name(char *);
+void truncate_name(char *name);
-void remove_brackets(char *);
+void remove_brackets(char *str);
 
 int main(int argc, char *argv[])
 {
+	char *cache_env = getenv("UWUFETCH_CACHE_ENABLED");
+	int cache_enabled = 0;
+	if (cache_env != NULL)
+	{
+		char buffer[128];
+		sscanf(cache_env, "%[TRUEtrue1]", buffer);
+		cache_enabled = (strcmp(buffer, "true") == 0 || strcmp(buffer, "TRUE") == 0 || strcmp(buffer, "1") == 0);
+		if (cache_enabled)
+		{
+			read_cache();
+			print_ascii();
+			print_info();
+			return 0;
+		}
+	}
+
 	int opt = 0;
 	static struct option long_options[] = {
 		{"ascii", no_argument, NULL, 'a'},
 		{"config", required_argument, NULL, 'c'},
+		// {"cache", no_argument, NULL, 'C'},
 		{"distro", required_argument, NULL, 'd'},
+		{"write-cache", no_argument, NULL, 'w'},
 		{"help", no_argument, NULL, 'h'},
 		{"image", optional_argument, NULL, 'i'},
 		{"list", no_argument, NULL, 'l'},
 		{NULL, 0, NULL, 0}};
 	get_info();
 	parse_config();
-	while ((opt = getopt_long(argc, argv, "ac:d:hi::l", long_options, NULL)) != -1)
+	while ((opt = getopt_long(argc, argv, "ac:d:ghi::l", long_options, NULL)) != -1)
 	{
 		switch (opt)
 		{
@@ -156,6 +176,8 @@ int main(int argc, char *argv[])
 		case 'l':
 			list(argv[0]);
 			return 0;
+		case 'w':
+			return write_cache();
 		default:
 			break;
 		}
@@ -168,15 +190,6 @@ int main(int argc, char *argv[])
 	}
 	else if (ascii_image_flag == 1)
 		print_image();
-	uwu_kernel();
-	uwu_name();
-
-	for (int i = 0; gpu_model[i][0]; i++)
-	{
-		uwu_hw(gpu_model[i]);
-	}
-	uwu_hw(cpu_model);
-	uwu_hw(host_model);
 
 	print_info();
 }
@@ -184,14 +197,17 @@ int main(int argc, char *argv[])
 void parse_config()
 {
 	char line[256];
-	char *homedir = getenv("HOME");
+	char homedir[512];
 
 	// opening and reading the config file
 	FILE *config;
 	if (config_directory == NULL)
 	{
-		if (homedir != NULL)
+		if (getenv("HOME") != NULL)
-			config = fopen(strcat(homedir, "/.config/uwufetch/config"), "r");
+		{
+			sprintf(homedir, "%s/.config/uwufetch/config", getenv("HOME"));
+			config = fopen(homedir, "r");
+		}
 	}
 	else
 		config = fopen(config_directory, "r");
@@ -334,6 +350,7 @@ void print_info()
 	printf("\033[9A"); // to align info text
 	if (show_user_info)
 		printf("\033[18C%s%s%s@%s\n", NORMAL, BOLD, user, host);
+	uwu_name();
 	if (show_os)
 		printf("\033[18C%s%sOWOS        %s%s\n", NORMAL, BOLD, NORMAL, version_name);
 	if (show_host)
@@ -345,15 +362,9 @@ void print_info()
 
 	// print the gpus
 	if (show_gpu)
-	{
+		for (int i = 0; gpu_model[i][0]; i++)
-		int gpu_iter = 0;
-		while (gpu_model[gpu_iter][0])
-		{
 			printf("\033[18C%s%sGPUWU       %s%s\n",
-				   NORMAL, BOLD, NORMAL, gpu_model[gpu_iter]);
+				   NORMAL, BOLD, NORMAL, gpu_model[i]);
-			gpu_iter++;
-		}
-	}
 
 	// print ram to uptime and colors
 	if (show_ram)
@@ -371,20 +382,24 @@ void print_info()
 		system("ls $(brew --cellar) | wc -l | awk -F' ' '{print \"  \x1b[34mw         w     \x1b[0m\x1b[1mPKGS\x1b[0m        \"$1 \" (brew)\"}'");
 #else
 	if (show_pkgs)
-		printf("\033[18C%s%sPKGS        %s%s%d%s %s\n",
+		printf("\033[18C%s%sPKGS        %s%s%d: %s\n",
-			   NORMAL, BOLD, NORMAL, NORMAL, pkgs, ":", pkgman_name);
+			   NORMAL, BOLD, NORMAL, NORMAL, pkgs, pkgman_name);
 #endif
 	if (show_uptime)
 	{
+		if (uptime == 0)
+		{
+
 #ifdef __APPLE__
-		uptime = uptime_mac();
+			uptime = uptime_mac();
 #else
 #ifdef __FREEBSD__
-		uptime = uptime_freebsd();
+			uptime = uptime_freebsd();
 #else
-		uptime = sys.uptime;
+			uptime = sys.uptime;
 #endif
 #endif
+		}
 		switch (uptime)
 		{
 		case 0 ... 3599:
@@ -405,6 +420,69 @@ void print_info()
 			   BOLD, BLACK, RED, GREEN, YELLOW, BLUE, MAGENTA, CYAN, WHITE, NORMAL);
 }
 
+int write_cache()
+{
+	char cache_file[512];
+	sprintf(cache_file, "%s/.cache/uwufetch.cache", getenv("HOME"));
+	FILE *cache_fp = fopen(cache_file, "w");
+	if (cache_fp == NULL)
+		return -1;
+		// writing all info to the cache file
+#ifdef __APPLE__
+	uptime = uptime_mac();
+#else
+#ifdef __FREEBSD__
+	uptime = uptime_freebsd();
+#else
+	uptime = sys.uptime;
+#endif
+#endif
+	fprintf(cache_fp, "user=%s\nhost=%s\nversion_name=%s\nhost_model=%s\nkernel=%s\ncpu=%s\nram_used=%i\nram_total=%i\nscreen_width=%d\nscreen_height=%d\nshell=%s\npkgs=%d\npkgman_name=%s\nuptime=%li\n", user, host, version_name, host_model, kernel, cpu_model, ram_used, ram_total, screen_width, screen_height, shell, pkgs, pkgman_name, uptime);
+
+	for (int i = 0; gpu_model[i][0]; i++)
+		fprintf(cache_fp, "gpu=%s\n", gpu_model[i]);
+
+#ifdef __APPLE__
+		/* char brew_command[2048];
+	sprintf(brew_command, "ls $(brew --cellar) | wc -l | awk -F' ' '{print \"  \x1b[34mw         w     \x1b[0m\x1b[1mPKGS\x1b[0m        \"$1 \" (brew)\"}' > %s", cache_file);
+	system(brew_command); */
+#endif
+	fclose(cache_fp);
+	return 0;
+}
+
+int read_cache()
+{
+	char cache_file[512];
+	sprintf(cache_file, "%s/.cache/uwufetch.cache", getenv("HOME"));
+	FILE *cache_fp = fopen(cache_file, "r");
+	if (cache_fp == NULL)
+		return -1;
+
+	char line[256];
+
+	while (fgets(line, sizeof(line), cache_fp))
+	{
+		sscanf(line, "user=%99[^\n]", user);
+		sscanf(line, "host=%99[^\n]", host);
+		sscanf(line, "version_name=%99[^\n]", version_name);
+		sscanf(line, "host_model=%99[^\n]", host_model);
+		sscanf(line, "kernel=%99[^\n]", kernel);
+		sscanf(line, "cpu=%99[^\n]", cpu_model);
+		sscanf(line, "ram_used=%i", &ram_used);
+		sscanf(line, "ram_total=%i", &ram_total);
+		sscanf(line, "screen_width=%i", &screen_width);
+		sscanf(line, "screen_height=%i", &screen_height);
+		sscanf(line, "shell=%99[^\n]", shell);
+		sscanf(line, "pkgs=%i", &pkgs);
+		sscanf(line, "pkgman_name=%99[^\n]", pkgman_name);
+		sscanf(line, "uptime=%li", &uptime);
+	}
+
+	fclose(cache_fp);
+	return 0;
+}
+
 void get_info()
 {					// get all necessary info
 	char line[256]; // var to scan file lines
@@ -680,6 +758,15 @@ void get_info()
 
 	// package count
 	pkgs = pkgman();
+
+	uwu_kernel();
+
+	for (int i = 0; gpu_model[i][0]; i++)
+	{
+		uwu_hw(gpu_model[i]);
+	}
+	uwu_hw(cpu_model);
+	uwu_hw(host_model);
 }
 
 void list(char *arg)
@@ -1075,14 +1162,16 @@ void print_image()
 void usage(char *arg)
 {
 	printf("Usage: %s <args>\n"
-		   "    -a, --ascii     prints logo as ascii text (default)\n"
+		   "    -a, --ascii         prints logo as ascii text (default)\n"
-		   "    -c  --config    use custom config path\n"
+		   "    -c  --config        use custom config path\n"
-		   "    -d, --distro    lets you choose the logo to print\n"
+		   "    -d, --distro        lets you choose the logo to print\n"
-		   "    -h, --help      prints this help page\n"
+		   "    -h, --help          prints this help page\n"
-		   "    -i, --image     prints logo as image and use a custom image if provided\n"
+		   "    -i, --image         prints logo as image and use a custom image if provided\n"
-		   "                    %sworks in most terminals\n"
+		   "                        %sworks in most terminals\n"
-		   "                    read README.md for more info%s\n"
+		   "                        read README.md for more info%s\n"
-		   "    -l, --list      lists all supported distributions\n",
+		   "    -l, --list          lists all supported distributions\n"
+		   "    -w, --write-cache   writes to the cache file (~/.cache/uwufetch.cache)\n"
+		   "    using the cache     set $UWUFETCH_CACHE_ENABLED to TRUE, true or 1\n",
 		   arg, BLUE, NORMAL);
 }