rexy712/rexbacklight
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Incremental commit for coopertition :)

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This commit is contained in:
rexy712 2018-01-20 16:46:22 -08:00
parent 27c416b04e
commit ed3edbdf56
1 changed files with 65 additions and 47 deletions
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112
src/rexbacklight.c
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@ -104,7 +104,7 @@ float get_brightness(const char* file){
}
//Write value to backlight files
void write_delta(struct arg_values* arg){
void do_assignment(struct arg_values* arg){
int out = process_op(arg, 0, get_brightness(backlight_file), get_brightness(max_backlight_file));
FILE* bright = fopen(backlight_file, "w+");
if(!bright){
@ -114,8 +114,61 @@ void write_delta(struct arg_values* arg){
fprintf(bright, "%d", out);
fclose(bright);
}
void do_get(const char* device){
fprintf(stdout, "%s: %f\n", device, get_brightness(backlight_file));
}
void do_list(struct string_array* names){
for(int i = 0;i < names->size;i++)
fprintf(stdout, "%s\n", names->list[i]);
}
void individual_device_loop(struct arg_values* a){
for(struct arg_values* curr = a->next;curr;curr = curr->next){
if(chdir(curr->device)){
fprintf(stderr, "Unable to open backlight directory \"%s%s\"!\n", backlight_dir, curr->device);
continue;
}
switch(curr->operation){
case OP_SET:
case OP_INC:
case OP_DEC:
do_assignment(curr);
break;
case OP_GET:
do_get(curr->device);
break;
}
}
}
void all_device_loop(struct string_array* backlight_names, struct arg_values* args){
switch(args->operation){
case OP_SET:
case OP_INC:
case OP_DEC:
for(int i = 0;i < backlight_names->size;i++){
if(chdir(backlight_names->list[i])){
fprintf(stderr, "Unable to open backlight directory \"%s%s\"!\n", backlight_dir, backlight_names->list[i]);
continue;
}
do_assignment(args);
}
break;
case OP_LIST:
do_list(backlight_names);
break;
case OP_GET:
for(int i = 0;i < backlight_names->size;i++){
if(chdir(backlight_names->list[i])){
fprintf(stderr, "Unable to open backlight directory \"%s%s\"!\n", backlight_dir, backlight_names->list[i]);
continue;
}
fprintf(stdout, "%s: %f\n", backlight_names->list[i], get_brightness(backlight_file));
}
break;
}
}
//argv[1] shall be [+-=]<percentage>|min|max|off
int main(int argc, char** argv){
struct arg_values args; //A linked list of devices and the requested settings.
@ -136,6 +189,7 @@ int main(int argc, char** argv){
return RETVAL_INVALID_DEVICE;
}
//Make sure all explicit devices actually exist
for(struct arg_values* curr = args.next;curr;curr = curr->next){
for(int i = 0;i < backlight_names.size;i++){
@ -149,13 +203,16 @@ int main(int argc, char** argv){
continue_outer:;
}
//save our starting directory so we can change to each backlight directory (makes logic easier)
char* starting_dir = getcwd(NULL, 0);
//Redefine CLEANUP to include freeing of the starting_dir string
#undef CLEANUP
#define CLEANUP() do{free_string_array(&backlight_names);free_cmd_args(&args);free(starting_dir);}while(0)
//Change to the base directory for all sysfs backlights
if(chdir(backlight_dir)){
fprintf(stderr, "Unable to read backlight sysfs directory!\n");
@ -163,54 +220,15 @@ int main(int argc, char** argv){
return RETVAL_INVALID_DIR;
}
//If args.next is not NULL, then 1+ devices were specified. Only apply change to those
//Run selected operation
if(args.next){
for(struct arg_values* curr = args.next;curr;curr = curr->next){
if(chdir(curr->device)){
fprintf(stderr, "Unable to open backlight directory \"%s%s\"!\n", backlight_dir, curr->device);
continue;
}
switch(curr->operation){
case OP_SET:
case OP_INC:
case OP_DEC:
write_delta(curr);
break;
case OP_GET:
fprintf(stdout, "%s: %f\n", curr->device, get_brightness(backlight_file));
break;
}
}
//Otherise, apply delta to all backlights
individual_device_loop(&args);
}else{
switch(args.operation){
case OP_SET:
case OP_INC:
case OP_DEC:
for(int i = 0;i < backlight_names.size;i++){
if(chdir(backlight_names.list[i])){
fprintf(stderr, "Unable to open backlight directory \"%s%s\"!\n", backlight_dir, backlight_names.list[i]);
continue;
}
write_delta(&args);
}
break;
case OP_LIST:
for(int i = 0;i < backlight_names.size;i++){
fprintf(stdout, "%s\n", backlight_names.list[i]);
}
break;
case OP_GET:
for(int i = 0;i < backlight_names.size;i++){
if(chdir(backlight_names.list[i])){
fprintf(stderr, "Unable to open backlight directory \"%s%s\"!\n", backlight_dir, backlight_names.list[i]);
continue;
}
fprintf(stdout, "%s: %f\n", backlight_names.list[i], get_brightness(backlight_file));
}
break;
}
all_device_loop(&backlight_names, &args);
}
//Return to start directory
if(chdir(starting_dir)){
CLEANUP();