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2 Commits

3 changed files with 18 additions and 5 deletions

View File

@@ -413,6 +413,7 @@ class TextValidator(LValidator):
str_args = [str(x) for x in value[CONF_ARGS]]
arg_expr = cg.RawExpression(",".join(str_args))
format_str = cpp_string_escape(format_str)
# str_sprintf justified: user-defined format, can't optimize without permanent RAM cost
sprintf_str = f"str_sprintf({format_str}, {arg_expr}).c_str()"
if nanval := value.get(CONF_IF_NAN):
nanval = cpp_string_escape(nanval)

View File

@@ -65,7 +65,10 @@ std::string lv_event_code_name_for(uint8_t event_code) {
if (event_code < sizeof(EVENT_NAMES) / sizeof(EVENT_NAMES[0])) {
return EVENT_NAMES[event_code];
}
return str_sprintf("%2d", event_code);
// max 4 bytes: "%u" with uint8_t (max 255, 3 digits) + null
char buf[4];
snprintf(buf, sizeof(buf), "%u", event_code);
return buf;
}
static void rounder_cb(lv_disp_drv_t *disp_drv, lv_area_t *area) {

View File

@@ -114,14 +114,23 @@ void StatsdComponent::update() {
// This implies you can't explicitly set a gauge to a negative number without first setting it to zero.
if (val < 0) {
if (this->prefix_) {
out.append(str_sprintf("%s.", this->prefix_));
out.append(this->prefix_);
out.append(".");
}
out.append(str_sprintf("%s:0|g\n", s.name));
out.append(s.name);
out.append(":0|g\n");
}
if (this->prefix_) {
out.append(str_sprintf("%s.", this->prefix_));
out.append(this->prefix_);
out.append(".");
}
out.append(str_sprintf("%s:%f|g\n", s.name, val));
out.append(s.name);
// Buffer for ":" + value + "|g\n".
// %g uses max 13 chars for value (sign + 6 significant digits + e+xxx)
// Total: 1 + 13 + 4 = 18 chars + null, use 24 for safety
char val_buf[24];
snprintf(val_buf, sizeof(val_buf), ":%g|g\n", val);
out.append(val_buf);
if (out.length() > SEND_THRESHOLD) {
this->send_(&out);