/*

 * Copyright (c) 2015, 2018, 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/logSelectionList.hpp"

#include "logging/logTagSet.hpp"

#include "runtime/arguments.hpp"

#include "runtime/os.inline.hpp"

static const char* DefaultExpressionString = "all";

bool LogSelectionList::verify_selections(outputStream* out) const {

  bool valid = true;

  for (size_t i = 0; i < _nselections; i++) {

    if (_selections[i].tag_sets_selected() == 0) {

      // Return immediately unless all invalid selections should be listed

      if (out == NULL) {

        return false;

      }

      if (valid) {

        out->print("No tag set matches selection(s):");

      }

      valid = false;

      char buf[256];

      _selections[i].describe_tags(buf, sizeof(buf));

      out->print(" %s", buf);

    }

  }

  if (!valid && out != NULL) {

    out->cr();

  }

  return valid;

}

bool LogSelectionList::parse(const char* str, outputStream* errstream) {

  bool success = true;

  if (str == NULL || strcmp(str, "") == 0) {

    str = DefaultExpressionString;

  }

  char* copy = os::strdup_check_oom(str, mtLogging);

  // Split string on commas

  for (char *comma_pos = copy, *cur = copy; success && comma_pos != NULL; cur = comma_pos + 1) {

    if (_nselections == MaxSelections) {

      if (errstream != NULL) {

        errstream->print_cr("Can not have more than " SIZE_FORMAT " log selections in a single configuration.",

                            MaxSelections);

      }

      success = false;

      break;

    }

    comma_pos = strchr(cur, ',');

    if (comma_pos != NULL) {

      *comma_pos = '\0';

    }

    LogSelection selection = LogSelection::parse(cur, errstream);

    if (selection == LogSelection::Invalid) {

      success = false;

      break;

    }

    _selections[_nselections++] = selection;

  }

  os::free(copy);

  return success;

}

LogLevelType LogSelectionList::level_for(const LogTagSet& ts) const {

  // Return NotMentioned if the given tagset isn't covered by this expression.

  LogLevelType level = LogLevel::NotMentioned;

  for (size_t i= 0; i < _nselections; i++) {

    if (_selections[i].selects(ts)) {

      level = _selections[i].level();

    }

  }

  return level;

}