[ccs811] Use buf_append_printf for buffer safety and ESP8266 flash optimization

esphome/components/ccs811/ccs811.cpp

@@ -81,8 +81,8 @@ void CCS811Component::setup() {
            bootloader_version, application_version);
   if (this->version_ != nullptr) {
     char version[20];  // "15.15.15 (0xffff)" is 17 chars, plus NUL, plus wiggle room
-    sprintf(version, "%d.%d.%d (0x%02x)", (application_version >> 12 & 15), (application_version >> 8 & 15),
-            (application_version >> 4 & 15), application_version);
+    buf_append_printf(version, sizeof(version), 0, "%d.%d.%d (0x%02x)", (application_version >> 12 & 15),
+                      (application_version >> 8 & 15), (application_version >> 4 & 15), application_version);
     ESP_LOGD(TAG, "publishing version state: %s", version);
     this->version_->publish_state(version);
   }

script/ci-custom.py

@@ -728,26 +728,6 @@ def lint_no_heap_allocating_helpers(fname, match):
     )
 
 
-@lint_re_check(
-    # Match sprintf/vsprintf but not snprintf/vsnprintf
-    # [^\w] ensures we don't match the safe variants
-    r"[^\w](v?sprintf)\s*\(" + CPP_RE_EOL,
-    include=cpp_include,
-)
-def lint_no_sprintf(fname, match):
-    func = match.group(1)
-    safe_func = func.replace("sprintf", "snprintf")
-    return (
-        f"{highlight(func + '()')} is not allowed in ESPHome. It has no buffer size limit "
-        f"and can cause buffer overflows.\n"
-        f"Please use one of these alternatives:\n"
-        f"  - {highlight(safe_func + '(buf, sizeof(buf), fmt, ...)')} for general formatting\n"
-        f"  - {highlight('buf_append_printf(buf, sizeof(buf), pos, fmt, ...)')} for "
-        f"offset-based formatting (also stores format strings in flash on ESP8266)\n"
-        f"(If strictly necessary, add `// NOLINT` to the end of the line)"
-    )
-
-
 @lint_content_find_check(
     "ESP_LOG",
     include=["*.h", "*.tcc"],