add GetBattery

src/fetch.c

@@ -256,3 +256,37 @@ int GetAVG(const char *title, const FETCH fetch) {
 
 #endif
 }
+
+void DrawBar(char *color, int cur, int max) {
+	printf("[");
+
+	int bar = max / BAR_WIDTH;
+	for (int i = 0; i < BAR_WIDTH; i++) {
+		if (i * bar < cur)
+			printf("%s-\033[0m", color);
+
+		else
+			printf("\033[1;30m-\033[0m");
+	}
+
+	printf("]");
+}
+
+int GetBattery(const char *title, const FETCH fetch) {
+	if (BATT_NAME == NULL)
+		return 1;
+
+	FILE *fp = fopen(BATT_NAME, "r");
+	if (fp == NULL)
+		return 1;
+
+	int capacity = 0;
+	if (fscanf(fp, "%d", &capacity) < 0)
+		return 1;
+
+	printf("%s%s%s", fetch.color, title, fetch.font_color);
+	DrawBar(fetch.color, capacity, 100);
+
+	return 0;
+}
+