modified: Makefile

modified:   config.h
	modified:   main.c

Makefile

@@ -1,10 +1,13 @@
-DESTDIR=/usr/local/bin
+DESTDIR=/usr/bin
 name=backlight
-
+cc=tcc
 
 
 all:main.c
-	gcc $^ -o ${name}
+	${cc} $^ -o ${name}
+
+debug:
+	gcc -Wall -std=c99 -pg main.c -o ${name}
 
 install:all
 	install -m 755 -t ${DESTDIR} ${name}

config.h

@@ -2,9 +2,20 @@
 #ifndef CONFIG_H
 #define CONFIG_H
 
-
+// Maximum brightness
 const char max_file[] = "/sys/class/backlight/amdgpu_bl0/max_brightness";
+// Current brightness
 const char target_file[] = "/sys/class/backlight/amdgpu_bl0/brightness";
 
+// Help
+const char help[] = "backlight command [N]\n\n\
+command in {set, dec, inc, get, -h}\n\
+N in [0 ... 100]\n\n\
+get\t\tGet backlight\n\
+set N\t\tSet backlight in N%\n\
+dec N\t\tDec backlight at N%\n\
+inc N\t\tInc backlight at N%\n\
+-h\t\tShow help\n\
+";
 
 #endif

main.c

@@ -5,11 +5,6 @@
 #include "config.h"
 
 
-const char help[] = "backlight command N\n\n\
-command in {set, dec, inc}\n\
-N in [0 ... 100]\n\
-";
-
 // 
 int get_backlight(const char* file)
 {
@@ -59,7 +54,7 @@ int min_max(int value, int min, int max)
 }
 
 // 
-int change(char* arg, short int direction)
+int change(char* arg, char direction)
 {
 	float max = (float)get_backlight(max_file);
 	float current_value = (float)get_backlight(target_file);
@@ -69,10 +64,11 @@ int change(char* arg, short int direction)
 	int new_value = current_value + direction*proc*one_proc;
 
 	set_backlight(target_file, min_max(new_value, 0, max));
+
 	return 0;
 }
 
-
+//  
 int main(int argc, char** argv)
 {
 	if(argc == 3)
@@ -89,15 +85,18 @@ int main(int argc, char** argv)
 			change(argv[2], -1);
 		if(strcmp(argv[1], "inc") == 0)
 			change(argv[2], 1);
-			
 	}
 	if(argc == 2)
 	{
 		if(strcmp(argv[1], "get") == 0)
 			printf("%d/%d\n", get_backlight(target_file), get_backlight(max_file));
+
+		if(strcmp(argv[1], "-h") == 0)
+			printf("%s\n", help);
+
+		if(strcmp(argv[1], "--help") == 0)
+			printf("%s\n", help);
 	}
-	else
-		printf("%s\n", help);
 	
 	return 0;
 }