/*

 * 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/logTag.hpp"

#include "utilities/stringUtils.hpp"

#include "utilities/globalDefinitions.hpp"

#include "utilities/ostream.hpp"

#include "utilities/quickSort.hpp"

const char* LogTag::_name[] = {

  "", // __NO_TAG

#define LOG_TAG(name) #name,

  LOG_TAG_LIST

#undef LOG_TAG

};

LogTagType LogTag::from_string(const char* str) {

  for (uint i = 0; i < LogTag::Count; i++) {

    if (strcasecmp(str, _name[i]) == 0) {

      return static_cast<LogTagType>(i);

    }

  }

  return __NO_TAG;

}

LogTagType LogTag::fuzzy_match(const char *str) {

  size_t len = strlen(str);

  LogTagType match = LogTag::__NO_TAG;

  double best = 0.5; // required similarity to be considered a match

  for (size_t i = 1; i < LogTag::Count; i++) {

    LogTagType tag = static_cast<LogTagType>(i);

    const char* tagname = LogTag::name(tag);

    double score = StringUtils::similarity(tagname, strlen(tagname), str, len);

    if (score >= best) {

      match = tag;

      best = score;

    }

  }

  return match;

}

static int cmp_logtag(LogTagType a, LogTagType b) {

  return strcmp(LogTag::name(a), LogTag::name(b));

}

static const size_t sorted_tagcount = LogTag::Count - 1; // Not counting _NO_TAG

static LogTagType sorted_tags[sorted_tagcount];

class TagSorter {

 public:

  TagSorter() {

    for (size_t i = 1; i < LogTag::Count; i++) {

      sorted_tags[i - 1] = static_cast<LogTagType>(i);

    }

    QuickSort::sort(sorted_tags, sorted_tagcount, cmp_logtag, true);

  }

};

static TagSorter tagsorter; // Sorts tags during static initialization

void LogTag::list_tags(outputStream* out) {

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

    out->print("%s %s", (i == 0 ? "" : ","), _name[sorted_tags[i]]);

  }

  out->cr();

}