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//
// Copyright Aliaksei Levin (levlam@telegram.org), Arseny Smirnov (arseny30@gmail.com) 2014-2026
//
// Distributed under the Boost Software License, Version 1.0. (See accompanying
// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
//
#pragma once
/**
* \file
* C interface for managing the internal logging of TDLib.
* By default TDLib writes logs to stderr or an OS specific log and uses a verbosity level of 5.
* These functions are deprecated since TDLib 1.4.0 in favor of the setLogVerbosityLevel, setLogStream and
* other synchronous requests for managing the internal TDLib logging.
*/
#include "td/telegram/tdjson_export.h"
#ifdef __cplusplus
extern "C" {
#endif
/**
* Sets the path to the file where the internal TDLib log will be written.
* By default TDLib writes logs to stderr or an OS specific log.
* Use this method to write the log to a file instead.
*
* \deprecated Use synchronous setLogStream request instead.
* \param[in] file_path Null-terminated path to a file where the internal TDLib log will be written.
* Use an empty path to switch back to the default logging behaviour.
* \return True 1 on success, or 0 otherwise, i.e. if the file can't be opened for writing.
*/
TDJSON_DEPRECATED_EXPORT int td_set_log_file_path(const char *file_path);
/**
* Sets the maximum size of the file to where the internal TDLib log is written before the file will be auto-rotated.
* Unused if log is not written to a file. Defaults to 10 MB.
*
* \deprecated Use synchronous setLogStream request instead.
* \param[in] max_file_size The maximum size of the file to where the internal TDLib log is written before the file
* will be auto-rotated. Should be positive.
*/
TDJSON_DEPRECATED_EXPORT void td_set_log_max_file_size(long long max_file_size);
/**
* Sets the verbosity level of the internal logging of TDLib.
* By default the TDLib uses a log verbosity level of 5.
*
* \deprecated Use synchronous setLogVerbosityLevel request instead.
* \param[in] new_verbosity_level New value of logging verbosity level.
* Value 0 corresponds to fatal errors,
* value 1 corresponds to errors,
* value 2 corresponds to warnings and debug warnings,
* value 3 corresponds to informational,
* value 4 corresponds to debug,
* value 5 corresponds to verbose debug,
* value greater than 5 and up to 1024 can be used to enable even more logging.
*/
TDJSON_DEPRECATED_EXPORT void td_set_log_verbosity_level(int new_verbosity_level);
/**
* A type of callback function that will be called when a fatal error happens.
*
* \param error_message Null-terminated string with a description of a happened fatal error.
*/
typedef void (*td_log_fatal_error_callback_ptr)(const char *error_message);
/**
* Sets the callback that will be called when a fatal error happens.
* None of the TDLib methods can be called from the callback.
* The TDLib will crash as soon as callback returns.
* By default the callback is not set.
*
* \deprecated Use td_set_log_message_callback instead.
* \param[in] callback Callback that will be called when a fatal error happens.
* Pass NULL to remove the callback.
*/
TDJSON_DEPRECATED_EXPORT void td_set_log_fatal_error_callback(td_log_fatal_error_callback_ptr callback);
#ifdef __cplusplus
} // extern "C"
#endif
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