/**********************************************************************

 * File:        adaptions.cpp  (Formerly adaptions.c)

 * Description: Functions used to adapt to blobs already confidently

 *              identified

 * Author:      Chris Newton

 *

 * (C) Copyright 1992, Hewlett-Packard Ltd.

 ** Licensed under the Apache License, Version 2.0 (the "License");

 ** you may not use this file except in compliance with the License.

 ** You may obtain a copy of the License at

 ** http://www.apache.org/licenses/LICENSE-2.0

 ** Unless required by applicable law or agreed to in writing, software

 ** distributed under the License is distributed on an "AS IS" BASIS,

 ** WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.

 ** See the License for the specific language governing permissions and

 ** limitations under the License.

 *

 **********************************************************************/

#include <cctype>

#include <cstring>

#include "control.h"

#include "reject.h"

#include "stopper.h"

#include "tesseractclass.h"

#include "tessvars.h"

// Include automatically generated configuration file if running autoconf.

#ifdef HAVE_CONFIG_H

#  include "config_auto.h"

#endif

namespace tesseract {

bool Tesseract::word_adaptable( // should we adapt?

    WERD_RES *word, uint16_t mode) {

  if (tessedit_adaption_debug) {

    tprintf("Running word_adaptable() for %s rating %.4f certainty %.4f\n",

            word->best_choice->unichar_string().c_str(), word->best_choice->rating(),

            word->best_choice->certainty());

  }

  bool status = false;

  std::bitset<16> flags(mode);

  enum MODES {

    ADAPTABLE_WERD,

    ACCEPTABLE_WERD,

    CHECK_DAWGS,

    CHECK_SPACES,

    CHECK_ONE_ELL_CONFLICT,

    CHECK_AMBIG_WERD

  };

  /*

0: NO adaption

*/

  if (mode == 0) {

    if (tessedit_adaption_debug) {

      tprintf("adaption disabled\n");

    }

    return false;

  }

  if (flags[ADAPTABLE_WERD]) {

    status |= word->tess_would_adapt; // result of Classify::AdaptableWord()

    if (tessedit_adaption_debug && !status) {

      tprintf("tess_would_adapt bit is false\n");

    }

  }

  if (flags[ACCEPTABLE_WERD]) {

    status |= word->tess_accepted;

    if (tessedit_adaption_debug && !status) {

      tprintf("tess_accepted bit is false\n");

    }

  }

  if (!status) {  // If not set then

    return false; // ignore other checks

  }

  if (flags[CHECK_DAWGS] && (word->best_choice->permuter() != SYSTEM_DAWG_PERM) &&

      (word->best_choice->permuter() != FREQ_DAWG_PERM) &&

      (word->best_choice->permuter() != USER_DAWG_PERM) &&

      (word->best_choice->permuter() != NUMBER_PERM)) {

    if (tessedit_adaption_debug) {

      tprintf("word not in dawgs\n");

    }

    return false;

  }

  if (flags[CHECK_ONE_ELL_CONFLICT] && one_ell_conflict(word, false)) {

    if (tessedit_adaption_debug) {

      tprintf("word has ell conflict\n");

    }

    return false;

  }

  if (flags[CHECK_SPACES] &&

      (strchr(word->best_choice->unichar_string().c_str(), ' ') != nullptr)) {

    if (tessedit_adaption_debug) {

      tprintf("word contains spaces\n");

    }

    return false;

  }

  if (flags[CHECK_AMBIG_WERD] && word->best_choice->dangerous_ambig_found()) {

    if (tessedit_adaption_debug) {

      tprintf("word is ambiguous\n");

    }

    return false;

  }

  if (tessedit_adaption_debug) {

    tprintf("returning status %d\n", status);

  }

  return status;

}

} // namespace tesseract