/*

 * Copyright (c) 2015, Oracle and/or its affiliates. All rights reserved.

 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.

 *

 * This code is free software; you can redistribute it and/or modify it

 * under the terms of the GNU General Public License version 2 only, as

 * published by the Free Software Foundation.

 *

 * This code is distributed in the hope that it will be useful, but WITHOUT

 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or

 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License

 * version 2 for more details (a copy is included in the LICENSE file that

 * accompanied this code).

 *

 * You should have received a copy of the GNU General Public License version

 * 2 along with this work; if not, write to the Free Software Foundation,

 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.

 *

 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA

 * or visit www.oracle.com if you need additional information or have any

 * questions.

 *

 */

#include "precompiled.hpp"

#include "logging/logFileStreamOutput.hpp"

#include "logging/logOutput.hpp"

#include "logging/logTagSet.hpp"

#include "memory/allocation.inline.hpp"

#include "runtime/mutexLocker.hpp"

#include "runtime/os.inline.hpp"

LogOutput* const LogOutput::Stdout = &LogStdoutOutput::_instance;

LogOutput* const LogOutput::Stderr = &LogStderrOutput::_instance;

LogOutput::~LogOutput() {

  os::free(_config_string);

}

void LogOutput::clear_config_string() {

  os::free(_config_string);

  _config_string_buffer_size = InitialConfigBufferSize;

  _config_string = NEW_C_HEAP_ARRAY(char, _config_string_buffer_size, mtLogging);

  _config_string[0] = '\0';

}

void LogOutput::set_config_string(const char* string) {

  os::free(_config_string);

  _config_string = os::strdup(string, mtLogging);

  _config_string_buffer_size = strlen(_config_string) + 1;

}

void LogOutput::add_to_config_string(const LogTagSet* ts, LogLevelType level) {

  if (_config_string_buffer_size < InitialConfigBufferSize) {

    _config_string_buffer_size = InitialConfigBufferSize;

    _config_string = REALLOC_C_HEAP_ARRAY(char, _config_string, _config_string_buffer_size, mtLogging);

  }

  size_t offset = strlen(_config_string);

  if (offset > 0) {

    // Add commas in-between tag and level combinations in the config string

    _config_string[offset++] = ',';

  }

  for (;;) {

    int ret = ts->label(_config_string + offset, _config_string_buffer_size - offset, "+");

    if (ret == -1) {

      // Double the buffer size and retry

      _config_string_buffer_size *= 2;

      _config_string = REALLOC_C_HEAP_ARRAY(char, _config_string, _config_string_buffer_size, mtLogging);

      continue;

    }

    break;

  };

  offset = strlen(_config_string);

  for (;;) {

    int ret = jio_snprintf(_config_string + offset, _config_string_buffer_size - offset, "=%s", LogLevel::name(level));

    if (ret == -1) {

      _config_string_buffer_size *= 2;

      _config_string = REALLOC_C_HEAP_ARRAY(char, _config_string, _config_string_buffer_size, mtLogging);

      continue;

    }

    break;

  }

}