gfloat math_string_eval(gchar *string, gfloat at_value)
{
GSList *postfix;
gfloat val;
postfix = math_string_to_postfix(string);
val = math_postfix_eval(postfix, at_value);
math_postfix_free(postfix, TRUE);
return val;
}
int main(void)
{
GSList *postfix;
gchar *expr = "0.9*(@+(5.2*0.923+3*(2.0)))";
postfix = math_string_to_postfix(expr);
g_print("%s = %f (must be 18.71964)\n", expr,
math_postfix_eval(postfix, 10));
math_postfix_free(postfix, TRUE);
return 0;
}
static void read_sensor_labels(gchar * driver)
{
FILE *conf;
gchar buf[256], *line, *p;
gboolean lock = FALSE;
gint i;
sensor_labels = g_hash_table_new_full(g_str_hash, g_str_equal,
g_free, g_free);
sensor_compute = g_hash_table_new(g_str_hash, g_str_equal);
/* Try to open lm-sensors config file sensors3.conf */
conf = fopen("/etc/sensors3.conf", "r");
/* If it fails, try to open sensors.conf */
if (!conf) conf = fopen("/etc/sensors.conf", "r");
if (!conf) {
/* Cannot open config file. */
return;
}
while (fgets(buf, 256, conf)) {
line = buf;
remove_linefeed(line);
strend(line, '#');
if (*line == '\0') {
continue;
} else if (lock && strstr(line, "label")) { /* label lines */
gchar **names = g_strsplit(strstr(line, "label") + 5, " ", 0);
gchar *name = NULL, *value = NULL;
for (i = 0; names[i]; i++) {
if (names[i][0] == '\0')
continue;
if (!name)
name = g_strdup(names[i]);
else if (!value)
value = g_strdup(names[i]);
else
value = g_strconcat(value, " ", names[i], NULL);
}
remove_quotes(value);
g_hash_table_insert(sensor_labels, name, value);
g_strfreev(names);
} else if (lock && strstr(line, "ignore")) { /* ignore lines */
p = strstr(line, "ignore") + 6;
if (!strchr(p, ' '))
continue;
while (*p == ' ')
p++;
g_hash_table_insert(sensor_labels, g_strdup(p), "ignore");
} else if (lock && strstr(line, "compute")) { /* compute lines */
gchar **formulas =
g_strsplit(strstr(line, "compute") + 7, " ", 0);
gchar *name = NULL, *formula = NULL;
for (i = 0; formulas[i]; i++) {
if (formulas[i][0] == '\0')
continue;
if (formulas[i][0] == ',')
break;
if (!name)
name = g_strdup(formulas[i]);
else if (!formula)
formula = g_strdup(formulas[i]);
else
formula = g_strconcat(formula, formulas[i], NULL);
}
g_strfreev(formulas);
g_hash_table_insert(sensor_compute, name,
math_string_to_postfix(formula));
} else if (g_str_has_prefix(line, "chip")) { /* chip lines (delimiter) */
if (lock == FALSE) {
gchar **chips = g_strsplit(line, " ", 0);
for (i = 1; chips[i]; i++) {
strend(chips[i], '*');
if (g_str_has_prefix(chips[i] + 1, driver)) {
lock = TRUE;
break;
}
}
g_strfreev(chips);
} else {
break;
}
}
}
fclose(conf);
}
