logger_host.cpp

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#if defined(USE_HOST)
#include "logger.h"
 
namespace esphome::logger {
 
void HOT Logger::write_msg_(const char *msg, uint16_t len) {
  static constexpr size_t TIMESTAMP_LEN = 10;  // "[HH:MM:SS]"
  static constexpr size_t HEADROOM = 128;      // Extra space for ANSI codes, newline, etc.
  char buffer[TIMESTAMP_LEN + ESPHOME_LOGGER_TX_BUFFER_SIZE + HEADROOM];
 
  time_t rawtime;
  time(&rawtime);
  struct tm timeinfo;
  localtime_r(&rawtime, &timeinfo);  // Thread-safe version
  size_t pos = strftime(buffer, TIMESTAMP_LEN + 1, "[%H:%M:%S]", &timeinfo);
 
  // Copy message (with newline already included by caller)
  size_t copy_len = std::min(static_cast<size_t>(len), sizeof(buffer) - pos);
  memcpy(buffer + pos, msg, copy_len);
  pos += copy_len;
 
  // Single write for everything
  fwrite(buffer, 1, pos, stdout);
}
 
void Logger::pre_setup() { global_logger = this; }
 
}  // namespace esphome::logger
 
#endif