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-rw-r--r--src/adjbacklight.c52
1 files changed, 34 insertions, 18 deletions
diff --git a/src/adjbacklight.c b/src/adjbacklight.c
index fcb1ffd..98e5bdf 100644
--- a/src/adjbacklight.c
+++ b/src/adjbacklight.c
@@ -48,7 +48,17 @@
/**
* Forking method
*/
+#ifndef FORK
#define FORK fork
+#endif
+
+
+/**
+ * The directory where the backlight devices are found and configured
+ */
+#ifndef BACKLIGHT_DIR
+#define BACKLIGHT_DIR "/sys/class/backlight"
+#endif
/**
@@ -218,7 +228,7 @@ int main(int argc, char** argv)
if (i + 1 == argc)
fprintf(stderr, "%s: argument for option %s is missing, ignoring option\n", *argv, arg);
else
- if (!isnumerical(tmp = *(argv + i++)))
+ if (!isnumerical(tmp = *(argv + ++i)))
fprintf(stderr, "%s: argument for option %s is malformated, ignoring option\n", *argv, arg);
else
{
@@ -245,7 +255,7 @@ int main(int argc, char** argv)
}
#undef T
}
- if (all + ndevices == 0)
+ if ((all + ndevices + get == 0) && !set)
{
P("\n");
P("adjbacklight - Convient method for adjusting the backlight on your portable computer");
@@ -344,14 +354,17 @@ int main(int argc, char** argv)
}
- P("\n");
- P("If the program is abnormally aborted the may be some residual");
- P("effects on the terminal. the following commands should reset it:");
- P("");
- P(" stty icanon echo");
- P(" echo -en '\\e[?25h'");
- P("");
- P("\n\n\n");
+ if (!get && !set)
+ {
+ P("\n");
+ P("If the program is abnormally aborted the may be some residual");
+ P("effects on the terminal. the following commands should reset it:");
+ P("");
+ P(" stty icanon echo");
+ P(" echo -en '\\e[?25h'");
+ P("");
+ P("\n\n\n");
+ }
if (!get && !set)
@@ -445,7 +458,7 @@ int main(int argc, char** argv)
else
{
struct dirent* ent;
- DIR* dir = opendir("/sys/class/backlight");
+ DIR* dir = opendir(BACKLIGHT_DIR);
if (dir)
{
char* device;
@@ -555,7 +568,7 @@ static void adjust(int cols, const char* device)
char* buf = alloca(256 * sizeof(char));
*dir = 0;
- dir = strcat(dir, "/sys/class/backlight/");
+ dir = strcat(dir, BACKLIGHT_DIR "/");
dir = strcat(dir, device);
dir = strcat(dir, "/");
lendir = strlen(dir);
@@ -619,7 +632,7 @@ static float getbrightness(const char* device)
char* buf = alloca(256);
*dir = 0;
- dir = strcat(dir, "/sys/class/backlight/");
+ dir = strcat(dir, BACKLIGHT_DIR "/");
dir = strcat(dir, device);
dir = strcat(dir, "/");
lendir = strlen(dir);
@@ -657,7 +670,7 @@ static void setbrightness(const char* device, const char* adjustment)
int act = 0, integer = 0, decimal = 0, p = 0, d = 0;
*dir = 0;
- dir = strcat(dir, "/sys/class/backlight/");
+ dir = strcat(dir, BACKLIGHT_DIR "/");
dir = strcat(dir, device);
dir = strcat(dir, "/");
lendir = strlen(dir);
@@ -699,8 +712,10 @@ static void setbrightness(const char* device, const char* adjustment)
else
{
integer *= 10;
- integer -= (*adjustment) - '0';
+ integer += (*adjustment) - '0';
}
+ if (!d)
+ d = 1;
/* Count number of p:s */
while (*adjustment++)
@@ -708,11 +723,11 @@ static void setbrightness(const char* device, const char* adjustment)
/* Calculate value to send */
if (p == 0)
- adj = (int)((double)decimal / (double)d + 0.5d) - integer;
+ adj = integer + (int)((double)decimal / (double)d + 0.5d);
else if (p == 1)
- adj = (int)(((double)decimal / (double)d - (double)integer) * (double)(max - min));
+ adj = (int)(((double)integer + (double)decimal / (double)d) * (double)(max - min) / 100.d);
else
- adj = (int)(((double)decimal / (double)d - (double)integer) * (double)cur);
+ adj = (int)(((double)integer + (double)decimal / (double)d) * (double)cur / 100.d);
adj = (act & 1) * cur + (act | 1) * adj;
if (adj < min) adj = min;
if (adj > max) adj = max;
@@ -804,6 +819,7 @@ static int writefile(char* buffer, int integer, const char* file)
return -1;
}
+ fflush(f);
fclose(f);
return 0;
}