Mercurial > hgrepos > Python2 > PyMuPDF

annotate mupdf-source/thirdparty/tesseract/src/dict/dawg_cache.cpp @ 46:7ee69f120f19 default tip

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
>>>>> tag v1.26.5+1 for changeset b74429b0f5c4
author Franz Glasner <fzglas.hg@dom66.de>
date Sat, 11 Oct 2025 17:17:30 +0200
parents b50eed0cc0ef
children
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
2
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1 ///////////////////////////////////////////////////////////////////////
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2 // File: dawg_cache.cpp
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3 // Description: A class that knows about loading and caching dawgs.
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4 // Author: David Eger
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5 //
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6 // (C) Copyright 2012, Google Inc.
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7 // Licensed under the Apache License, Version 2.0 (the "License");
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8 // you may not use this file except in compliance with the License.
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9 // You may obtain a copy of the License at
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10 // http://www.apache.org/licenses/LICENSE-2.0
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11 // Unless required by applicable law or agreed to in writing, software
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12 // distributed under the License is distributed on an "AS IS" BASIS,
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13 // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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14 // See the License for the specific language governing permissions and
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15 // limitations under the License.
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16 //
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17 ///////////////////////////////////////////////////////////////////////
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18
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19 #include "dawg_cache.h"
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20
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21 #include "dawg.h"
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22 #include "object_cache.h"
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23 #include "tessdatamanager.h"
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24
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25 namespace tesseract {
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27 struct DawgLoader {
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28 DawgLoader(const std::string &lang, TessdataType tessdata_dawg_type, int dawg_debug_level,
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29 TessdataManager *data_file)
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30 : lang_(lang)
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31 , data_file_(data_file)
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32 , tessdata_dawg_type_(tessdata_dawg_type)
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33 , dawg_debug_level_(dawg_debug_level) {}
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34
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35 Dawg *Load();
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37 std::string lang_;
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38 TessdataManager *data_file_;
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39 TessdataType tessdata_dawg_type_;
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40 int dawg_debug_level_;
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41 };
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42
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43 Dawg *DawgCache::GetSquishedDawg(const std::string &lang, TessdataType tessdata_dawg_type,
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44 int debug_level, TessdataManager *data_file) {
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45 std::string data_id = data_file->GetDataFileName();
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46 data_id += kTessdataFileSuffixes[tessdata_dawg_type];
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47 DawgLoader loader(lang, tessdata_dawg_type, debug_level, data_file);
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48 return dawgs_.Get(data_id, std::bind(&DawgLoader::Load, &loader));
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49 }
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50
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51 Dawg *DawgLoader::Load() {
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52 TFile fp;
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53 if (!data_file_->GetComponent(tessdata_dawg_type_, &fp)) {
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54 return nullptr;
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55 }
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56 DawgType dawg_type;
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57 PermuterType perm_type;
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58 switch (tessdata_dawg_type_) {
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59 case TESSDATA_PUNC_DAWG:
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60 case TESSDATA_LSTM_PUNC_DAWG:
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61 dawg_type = DAWG_TYPE_PUNCTUATION;
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62 perm_type = PUNC_PERM;
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63 break;
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64 case TESSDATA_SYSTEM_DAWG:
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65 case TESSDATA_LSTM_SYSTEM_DAWG:
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66 dawg_type = DAWG_TYPE_WORD;
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67 perm_type = SYSTEM_DAWG_PERM;
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68 break;
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69 case TESSDATA_NUMBER_DAWG:
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70 case TESSDATA_LSTM_NUMBER_DAWG:
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71 dawg_type = DAWG_TYPE_NUMBER;
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72 perm_type = NUMBER_PERM;
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73 break;
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74 case TESSDATA_BIGRAM_DAWG:
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75 dawg_type = DAWG_TYPE_WORD; // doesn't actually matter
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76 perm_type = COMPOUND_PERM; // doesn't actually matter
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77 break;
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78 case TESSDATA_UNAMBIG_DAWG:
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79 dawg_type = DAWG_TYPE_WORD;
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80 perm_type = SYSTEM_DAWG_PERM;
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81 break;
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82 case TESSDATA_FREQ_DAWG:
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83 dawg_type = DAWG_TYPE_WORD;
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84 perm_type = FREQ_DAWG_PERM;
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85 break;
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86 default:
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87 return nullptr;
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88 }
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89 auto *retval = new SquishedDawg(dawg_type, lang_, perm_type, dawg_debug_level_);
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90 if (retval->Load(&fp)) {
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91 return retval;
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92 }
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93 delete retval;
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94 return nullptr;
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95 }
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96
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97 } // namespace tesseract