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implemented write_int()

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Alessandro Mauri 2024-10-22 19:05:38 +02:00
parent 550fa7f18b
commit 73dc9bc0de
1 changed files with 21 additions and 11 deletions
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30
ambientd.c
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@ -41,9 +41,11 @@ int get_luminance_raw (void)
// read a string from a file and convert it to int, should only be used for // read a string from a file and convert it to int, should only be used for
// positive numbers since negative numbers mean an error // positive numbers since negative numbers mean an error
int read_int(FILE *fp) static int read_int(FILE *fp)
{ {
freopen(NULL, "r", fp); if (freopen(NULL, "r", fp) == NULL) {
return -1;
}
const char *p = fgets(STR_BUFFER, sizeof(STR_BUFFER), fp); const char *p = fgets(STR_BUFFER, sizeof(STR_BUFFER), fp);
if (p == NULL) { if (p == NULL) {
return -1; return -1;
@ -55,7 +57,20 @@ int read_int(FILE *fp)
return r; return r;
} }
float bezier(float t) // write an intger value to a file as a string
static int write_int(FILE* fp, int value)
{
if (freopen(NULL, "w", fp) == NULL) {
return -1;
}
int x = snprintf(STR_BUFFER, sizeof(STR_BUFFER), "%d", value);
if (x <= 0) {
return -1;
}
return fputs(STR_BUFFER, fp);
}
static inline float bezier(float t)
{ {
const float B = 0.66; const float B = 0.66;
const float D = 0.28; const float D = 0.28;
@ -144,15 +159,10 @@ int main (void)
} }
brightness_adjusted = MIN(MAX(brightness_target + user_offset, min_brightness), max_brightness); brightness_adjusted = MIN(MAX(brightness_target + user_offset, min_brightness), max_brightness);
// TODO: put this in write_int() function x = write_int(brightness_fp, brightness_adjusted);
x = snprintf(STR_BUFFER, sizeof(STR_BUFFER), "%d", brightness_adjusted); if (x < 0) {
if (x <= 0) {
fprintf(stderr, "Error in snprintf(): %s\n", strerror(errno));
}
if (fputs(STR_BUFFER, brightness_fp) == EOF) {
fprintf(stderr, "error writing brightness: %s\n", strerror(errno)); fprintf(stderr, "error writing brightness: %s\n", strerror(errno));
} }
rewind(brightness_fp);
sleep(3); sleep(3);