wmstatus: rework battery reporting
Report "USB" and USB devices as well (SpaceMouse, Intuos), make use of the "capacity" field everywhere. Present read errors to the user, rather than spam the log.
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A0420B94F92B9493
83
wmstatus.c
83
wmstatus.c
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@ -1022,13 +1022,14 @@ read_value (int dir, const char *filename, struct error **e)
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return NULL;
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}
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errno = 0;
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struct str s = str_make ();
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bool success = read_line (fp, &s);
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bool success = read_line (fp, &s) && !ferror (fp);
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fclose (fp);
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if (!success)
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{
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error_set (e, "%s: %s", filename, "read failed");
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error_set (e, "%s: %s", filename, errno ? strerror (errno) : "EOF");
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return NULL;
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}
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return str_steal (&s);
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@ -1043,42 +1044,61 @@ read_number (int dir, const char *filename, struct error **e)
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unsigned long number = 0;
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if (!xstrtoul (&number, value, 10))
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error_set (e, "%s: %s", filename, "doesn't contain an unsigned number");
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error_set (e, "%s: %s", filename, "doesn't contain a valid number");
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free (value);
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return number;
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}
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// - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
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static char *
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read_battery_status (int dir, struct error **e)
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static int
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read_battery_charge (int dir)
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{
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char *result = NULL;
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struct error *error = NULL;
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double capacity, now, full;
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if ((capacity = read_number (dir, "capacity", &error), !error))
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return capacity;
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char *status;
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double charge_now;
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double charge_full;
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error_free (error);
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if ((now = read_number (dir, "charge_now", &error), !error)
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&& (full = read_number (dir, "charge_full", &error), !error))
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return now / full * 100 + 0.5;
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if ((status = read_value (dir, "status", &error), error)
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|| (charge_now = read_number (dir, "charge_now", &error), error)
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|| (charge_full = read_number (dir, "charge_full", &error), error))
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error_propagate (e, error);
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else
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{
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error_free (error);
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return -1;
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}
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static char *
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read_battery_status (int dir, char **type)
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{
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// We present errors to the user, don't fill up the session's log.
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struct error *error = NULL;
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struct str s = str_make ();
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str_append (&s, status);
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// Dell is being unreasonable and seems to set charge_now
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// to charge_full_design when the battery is fully charged
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unsigned percentage = charge_now / charge_full * 100 + 0.5;
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if (percentage < 100)
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str_append_printf (&s, " (%u%%)", percentage);
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result = str_steal (&s);
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}
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int charge = read_battery_charge (dir);
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if (charge >= 0 && charge <= 100)
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str_append_printf (&s, "%u%%", charge);
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char *status = NULL;
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char *model_name = read_value (dir, "model_name", NULL);
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if (model_name)
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{
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model_name[strcspn (model_name, " ")] = 0;
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cstr_set (type, model_name);
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}
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else if ((status = read_value (dir, "status", &error), !error))
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{
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str_append_printf (&s, " (%s)", status);
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free (status);
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return result;
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}
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else
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{
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str_append_printf (&s, " (%s)", strerror (errno));
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error_free (error);
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}
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return str_steal (&s);
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}
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static char *
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@ -1094,14 +1114,13 @@ try_power_supply (int dir, struct error **e)
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bool is_relevant =
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!strcmp (type, "Battery") ||
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!strcmp (type, "USB") ||
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!strcmp (type, "UPS");
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char *result = NULL;
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if (is_relevant)
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{
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char *status = read_battery_status (dir, &error);
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if (error)
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error_propagate (e, error);
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char *status = read_battery_status (dir, &type);
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if (status)
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result = xstrdup_printf ("%s %s", type, status);
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free (status);
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@ -1122,8 +1141,8 @@ make_battery_status (void)
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}
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struct dirent *entry;
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char *status = NULL;
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while (!status && (entry = readdir (power_supply)))
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struct strv batteries = strv_make ();
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while ((entry = readdir (power_supply)))
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{
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const char *device_name = entry->d_name;
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if (device_name[0] == '.')
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@ -1137,8 +1156,11 @@ make_battery_status (void)
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}
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struct error *error = NULL;
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status = try_power_supply (dir, &error);
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char *status = try_power_supply (dir, &error);
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close (dir);
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if (status)
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strv_append_owned (&batteries, status);
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if (error)
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{
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print_error ("%s: %s", device_name, error->message);
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@ -1146,7 +1168,10 @@ make_battery_status (void)
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}
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}
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closedir (power_supply);
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return status;
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char *result = batteries.len ? strv_join (&batteries, " ") : NULL;
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strv_free (&batteries);
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return result;
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}
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// - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
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