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Merge remote-tracking branch 'origin/logger-subtract-line-format' into integration

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J. Nick Koston
2026-02-22 21:31:24 -06:00
parent 3145798d68 6b9e1045c0
commit 602eefd72c
1 changed files with 14 additions and 10 deletions
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24
esphome/components/logger/log_buffer.h
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@@ -75,18 +75,13 @@ struct LogBuffer {
*p++ = ':';
// Format line number without modulo operations
// Format line number using subtraction loops (no division - important for ESP8266 which lacks hardware divider)
if (line > 999) [[unlikely]] {
int thousands = line / 1000;
*p++ = '0' + thousands;
line -= thousands * 1000;
this->write_digit_(p, line, 1000);
}
int hundreds = line / 100;
int remainder = line - hundreds * 100;
int tens = remainder / 10;
*p++ = '0' + hundreds;
*p++ = '0' + tens;
*p++ = '0' + (remainder - tens * 10);
this->write_digit_(p, line, 100);
this->write_digit_(p, line, 10);
*p++ = '0' + line;
*p++ = ']';
#if defined(USE_ESP32) || defined(USE_LIBRETINY) || defined(USE_ZEPHYR) || defined(USE_HOST)
@@ -162,6 +157,15 @@ struct LogBuffer {
this->process_vsnprintf_result_(vsnprintf_P(this->current_(), this->remaining_(), format, args));
}
#endif
// Extract one decimal digit via subtraction (no division - important for ESP8266)
static inline void write_digit_(char *&p, int &value, int divisor) {
char d = '0';
while (value >= divisor) {
d++;
value -= divisor;
}
*p++ = d;
}
// Write ANSI color escape sequence to buffer, updates pointer in place
// Caller is responsible for ensuring buffer has sufficient space
void write_ansi_color_(char *&p, uint8_t level) {