Mercurial > hgrepos > Python2 > PyMuPDF

annotate mupdf-source/thirdparty/tesseract/src/api/renderer.cpp @ 2:b50eed0cc0ef upstream

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ADD: MuPDF v1.26.7: the MuPDF source as downloaded by a default build of PyMuPDF 1.26.4. The directory name has changed: no version number in the expanded directory now.
author Franz Glasner <fzglas.hg@dom66.de>
date Mon, 15 Sep 2025 11:43:07 +0200
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2
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1 ///////////////////////////////////////////////////////////////////////
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2 // File: renderer.cpp
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3 // Description: Rendering interface to inject into TessBaseAPI
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4 //
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5 // (C) Copyright 2011, Google Inc.
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6 // Licensed under the Apache License, Version 2.0 (the "License");
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7 // you may not use this file except in compliance with the License.
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8 // You may obtain a copy of the License at
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9 // http://www.apache.org/licenses/LICENSE-2.0
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10 // Unless required by applicable law or agreed to in writing, software
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11 // distributed under the License is distributed on an "AS IS" BASIS,
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12 // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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13 // See the License for the specific language governing permissions and
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14 // limitations under the License.
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15 //
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16 ///////////////////////////////////////////////////////////////////////
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17
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18 #ifdef HAVE_CONFIG_H
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19 # include "config_auto.h"
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20 #endif
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21 #include <tesseract/baseapi.h>
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22 #include <tesseract/renderer.h>
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23 #include <cstring>
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24 #include <memory> // std::unique_ptr
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25 #include <string> // std::string
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26 #include "serialis.h" // Serialize
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27
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28 namespace tesseract {
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29
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30 /**********************************************************************
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31 * Base Renderer interface implementation
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32 **********************************************************************/
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33 TessResultRenderer::TessResultRenderer(const char *outputbase, const char *extension)
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34 : next_(nullptr)
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35 , fout_(stdout)
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36 , file_extension_(extension)
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37 , title_("")
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38 , imagenum_(-1)
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39 , happy_(true) {
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40 if (strcmp(outputbase, "-") && strcmp(outputbase, "stdout")) {
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41 std::string outfile = std::string(outputbase) + "." + extension;
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42 fout_ = fopen(outfile.c_str(), "wb");
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43 if (fout_ == nullptr) {
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44 happy_ = false;
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45 }
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46 }
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47 }
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48
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49 TessResultRenderer::~TessResultRenderer() {
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50 if (fout_ != nullptr) {
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51 if (fout_ != stdout) {
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52 fclose(fout_);
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53 } else {
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54 clearerr(fout_);
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55 }
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56 }
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57 delete next_;
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58 }
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59
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60 void TessResultRenderer::insert(TessResultRenderer *next) {
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61 if (next == nullptr) {
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62 return;
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63 }
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64
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65 TessResultRenderer *remainder = next_;
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66 next_ = next;
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67 if (remainder) {
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68 while (next->next_ != nullptr) {
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69 next = next->next_;
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70 }
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71 next->next_ = remainder;
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72 }
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73 }
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74
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75 bool TessResultRenderer::BeginDocument(const char *title) {
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76 if (!happy_) {
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77 return false;
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78 }
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79 title_ = title;
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80 imagenum_ = -1;
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81 bool ok = BeginDocumentHandler();
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82 if (next_) {
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83 ok = next_->BeginDocument(title) && ok;
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84 }
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85 return ok;
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86 }
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87
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88 bool TessResultRenderer::AddImage(TessBaseAPI *api) {
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89 if (!happy_) {
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90 return false;
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91 }
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92 ++imagenum_;
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93 bool ok = AddImageHandler(api);
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94 if (next_) {
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95 ok = next_->AddImage(api) && ok;
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96 }
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97 return ok;
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98 }
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99
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100 bool TessResultRenderer::EndDocument() {
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101 if (!happy_) {
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102 return false;
b50eed0cc0ef ADD: MuPDF v1.26.7: the MuPDF source as downloaded by a default build of PyMuPDF 1.26.4.
Franz Glasner <fzglas.hg@dom66.de>
parents:
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103 }
b50eed0cc0ef ADD: MuPDF v1.26.7: the MuPDF source as downloaded by a default build of PyMuPDF 1.26.4.
Franz Glasner <fzglas.hg@dom66.de>
parents:
diff changeset
104 bool ok = EndDocumentHandler();
b50eed0cc0ef ADD: MuPDF v1.26.7: the MuPDF source as downloaded by a default build of PyMuPDF 1.26.4.
Franz Glasner <fzglas.hg@dom66.de>
parents:
diff changeset
105 if (next_) {
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Franz Glasner <fzglas.hg@dom66.de>
parents:
diff changeset
106 ok = next_->EndDocument() && ok;
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Franz Glasner <fzglas.hg@dom66.de>
parents:
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107 }
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Franz Glasner <fzglas.hg@dom66.de>
parents:
diff changeset
108 return ok;
b50eed0cc0ef ADD: MuPDF v1.26.7: the MuPDF source as downloaded by a default build of PyMuPDF 1.26.4.
Franz Glasner <fzglas.hg@dom66.de>
parents:
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109 }
b50eed0cc0ef ADD: MuPDF v1.26.7: the MuPDF source as downloaded by a default build of PyMuPDF 1.26.4.
Franz Glasner <fzglas.hg@dom66.de>
parents:
diff changeset
110
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Franz Glasner <fzglas.hg@dom66.de>
parents:
diff changeset
111 void TessResultRenderer::AppendString(const char *s) {
b50eed0cc0ef ADD: MuPDF v1.26.7: the MuPDF source as downloaded by a default build of PyMuPDF 1.26.4.
Franz Glasner <fzglas.hg@dom66.de>
parents:
diff changeset
112 if (s == nullptr) {
b50eed0cc0ef ADD: MuPDF v1.26.7: the MuPDF source as downloaded by a default build of PyMuPDF 1.26.4.
Franz Glasner <fzglas.hg@dom66.de>
parents:
diff changeset
113 return;
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Franz Glasner <fzglas.hg@dom66.de>
parents:
diff changeset
114 }
b50eed0cc0ef ADD: MuPDF v1.26.7: the MuPDF source as downloaded by a default build of PyMuPDF 1.26.4.
Franz Glasner <fzglas.hg@dom66.de>
parents:
diff changeset
115 AppendData(s, strlen(s));
b50eed0cc0ef ADD: MuPDF v1.26.7: the MuPDF source as downloaded by a default build of PyMuPDF 1.26.4.
Franz Glasner <fzglas.hg@dom66.de>
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116 }
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117
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Franz Glasner <fzglas.hg@dom66.de>
parents:
diff changeset
118 void TessResultRenderer::AppendData(const char *s, int len) {
b50eed0cc0ef ADD: MuPDF v1.26.7: the MuPDF source as downloaded by a default build of PyMuPDF 1.26.4.
Franz Glasner <fzglas.hg@dom66.de>
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diff changeset
119 if (!tesseract::Serialize(fout_, s, len)) {
b50eed0cc0ef ADD: MuPDF v1.26.7: the MuPDF source as downloaded by a default build of PyMuPDF 1.26.4.
Franz Glasner <fzglas.hg@dom66.de>
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120 happy_ = false;
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parents:
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121 }
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Franz Glasner <fzglas.hg@dom66.de>
parents:
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122 fflush(fout_);
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Franz Glasner <fzglas.hg@dom66.de>
parents:
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123 }
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Franz Glasner <fzglas.hg@dom66.de>
parents:
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124
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Franz Glasner <fzglas.hg@dom66.de>
parents:
diff changeset
125 bool TessResultRenderer::BeginDocumentHandler() {
b50eed0cc0ef ADD: MuPDF v1.26.7: the MuPDF source as downloaded by a default build of PyMuPDF 1.26.4.
Franz Glasner <fzglas.hg@dom66.de>
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126 return happy_;
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127 }
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128
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diff changeset
129 bool TessResultRenderer::EndDocumentHandler() {
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130 return happy_;
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parents:
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131 }
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132
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133 /**********************************************************************
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Franz Glasner <fzglas.hg@dom66.de>
parents:
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134 * UTF8 Text Renderer interface implementation
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Franz Glasner <fzglas.hg@dom66.de>
parents:
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135 **********************************************************************/
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Franz Glasner <fzglas.hg@dom66.de>
parents:
diff changeset
136 TessTextRenderer::TessTextRenderer(const char *outputbase)
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137 : TessResultRenderer(outputbase, "txt") {}
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parents:
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138
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Franz Glasner <fzglas.hg@dom66.de>
parents:
diff changeset
139 bool TessTextRenderer::AddImageHandler(TessBaseAPI *api) {
b50eed0cc0ef ADD: MuPDF v1.26.7: the MuPDF source as downloaded by a default build of PyMuPDF 1.26.4.
Franz Glasner <fzglas.hg@dom66.de>
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140 const std::unique_ptr<const char[]> utf8(api->GetUTF8Text());
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Franz Glasner <fzglas.hg@dom66.de>
parents:
diff changeset
141 if (utf8 == nullptr) {
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Franz Glasner <fzglas.hg@dom66.de>
parents:
diff changeset
142 return false;
b50eed0cc0ef ADD: MuPDF v1.26.7: the MuPDF source as downloaded by a default build of PyMuPDF 1.26.4.
Franz Glasner <fzglas.hg@dom66.de>
parents:
diff changeset
143 }
b50eed0cc0ef ADD: MuPDF v1.26.7: the MuPDF source as downloaded by a default build of PyMuPDF 1.26.4.
Franz Glasner <fzglas.hg@dom66.de>
parents:
diff changeset
144
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Franz Glasner <fzglas.hg@dom66.de>
parents:
diff changeset
145 const char *pageSeparator = api->GetStringVariable("page_separator");
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Franz Glasner <fzglas.hg@dom66.de>
parents:
diff changeset
146 if (pageSeparator != nullptr && *pageSeparator != '\0' && imagenum() > 0) {
b50eed0cc0ef ADD: MuPDF v1.26.7: the MuPDF source as downloaded by a default build of PyMuPDF 1.26.4.
Franz Glasner <fzglas.hg@dom66.de>
parents:
diff changeset
147 AppendString(pageSeparator);
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Franz Glasner <fzglas.hg@dom66.de>
parents:
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148 }
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parents:
diff changeset
149
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Franz Glasner <fzglas.hg@dom66.de>
parents:
diff changeset
150 AppendString(utf8.get());
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parents:
diff changeset
151
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Franz Glasner <fzglas.hg@dom66.de>
parents:
diff changeset
152 return true;
b50eed0cc0ef ADD: MuPDF v1.26.7: the MuPDF source as downloaded by a default build of PyMuPDF 1.26.4.
Franz Glasner <fzglas.hg@dom66.de>
parents:
diff changeset
153 }
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Franz Glasner <fzglas.hg@dom66.de>
parents:
diff changeset
154
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parents:
diff changeset
155 /**********************************************************************
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Franz Glasner <fzglas.hg@dom66.de>
parents:
diff changeset
156 * TSV Text Renderer interface implementation
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Franz Glasner <fzglas.hg@dom66.de>
parents:
diff changeset
157 **********************************************************************/
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Franz Glasner <fzglas.hg@dom66.de>
parents:
diff changeset
158 TessTsvRenderer::TessTsvRenderer(const char *outputbase) : TessResultRenderer(outputbase, "tsv") {
b50eed0cc0ef ADD: MuPDF v1.26.7: the MuPDF source as downloaded by a default build of PyMuPDF 1.26.4.
Franz Glasner <fzglas.hg@dom66.de>
parents:
diff changeset
159 font_info_ = false;
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Franz Glasner <fzglas.hg@dom66.de>
parents:
diff changeset
160 }
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Franz Glasner <fzglas.hg@dom66.de>
parents:
diff changeset
161
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Franz Glasner <fzglas.hg@dom66.de>
parents:
diff changeset
162 TessTsvRenderer::TessTsvRenderer(const char *outputbase, bool font_info)
b50eed0cc0ef ADD: MuPDF v1.26.7: the MuPDF source as downloaded by a default build of PyMuPDF 1.26.4.
Franz Glasner <fzglas.hg@dom66.de>
parents:
diff changeset
163 : TessResultRenderer(outputbase, "tsv") {
b50eed0cc0ef ADD: MuPDF v1.26.7: the MuPDF source as downloaded by a default build of PyMuPDF 1.26.4.
Franz Glasner <fzglas.hg@dom66.de>
parents:
diff changeset
164 font_info_ = font_info;
b50eed0cc0ef ADD: MuPDF v1.26.7: the MuPDF source as downloaded by a default build of PyMuPDF 1.26.4.
Franz Glasner <fzglas.hg@dom66.de>
parents:
diff changeset
165 }
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Franz Glasner <fzglas.hg@dom66.de>
parents:
diff changeset
166
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Franz Glasner <fzglas.hg@dom66.de>
parents:
diff changeset
167 bool TessTsvRenderer::BeginDocumentHandler() {
b50eed0cc0ef ADD: MuPDF v1.26.7: the MuPDF source as downloaded by a default build of PyMuPDF 1.26.4.
Franz Glasner <fzglas.hg@dom66.de>
parents:
diff changeset
168 // Output TSV column headings
b50eed0cc0ef ADD: MuPDF v1.26.7: the MuPDF source as downloaded by a default build of PyMuPDF 1.26.4.
Franz Glasner <fzglas.hg@dom66.de>
parents:
diff changeset
169 AppendString(
b50eed0cc0ef ADD: MuPDF v1.26.7: the MuPDF source as downloaded by a default build of PyMuPDF 1.26.4.
Franz Glasner <fzglas.hg@dom66.de>
parents:
diff changeset
170 "level\tpage_num\tblock_num\tpar_num\tline_num\tword_"
b50eed0cc0ef ADD: MuPDF v1.26.7: the MuPDF source as downloaded by a default build of PyMuPDF 1.26.4.
Franz Glasner <fzglas.hg@dom66.de>
parents:
diff changeset
171 "num\tleft\ttop\twidth\theight\tconf\ttext\n");
b50eed0cc0ef ADD: MuPDF v1.26.7: the MuPDF source as downloaded by a default build of PyMuPDF 1.26.4.
Franz Glasner <fzglas.hg@dom66.de>
parents:
diff changeset
172 return true;
b50eed0cc0ef ADD: MuPDF v1.26.7: the MuPDF source as downloaded by a default build of PyMuPDF 1.26.4.
Franz Glasner <fzglas.hg@dom66.de>
parents:
diff changeset
173 }
b50eed0cc0ef ADD: MuPDF v1.26.7: the MuPDF source as downloaded by a default build of PyMuPDF 1.26.4.
Franz Glasner <fzglas.hg@dom66.de>
parents:
diff changeset
174
b50eed0cc0ef ADD: MuPDF v1.26.7: the MuPDF source as downloaded by a default build of PyMuPDF 1.26.4.
Franz Glasner <fzglas.hg@dom66.de>
parents:
diff changeset
175 bool TessTsvRenderer::EndDocumentHandler() {
b50eed0cc0ef ADD: MuPDF v1.26.7: the MuPDF source as downloaded by a default build of PyMuPDF 1.26.4.
Franz Glasner <fzglas.hg@dom66.de>
parents:
diff changeset
176 return true;
b50eed0cc0ef ADD: MuPDF v1.26.7: the MuPDF source as downloaded by a default build of PyMuPDF 1.26.4.
Franz Glasner <fzglas.hg@dom66.de>
parents:
diff changeset
177 }
b50eed0cc0ef ADD: MuPDF v1.26.7: the MuPDF source as downloaded by a default build of PyMuPDF 1.26.4.
Franz Glasner <fzglas.hg@dom66.de>
parents:
diff changeset
178
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Franz Glasner <fzglas.hg@dom66.de>
parents:
diff changeset
179 bool TessTsvRenderer::AddImageHandler(TessBaseAPI *api) {
b50eed0cc0ef ADD: MuPDF v1.26.7: the MuPDF source as downloaded by a default build of PyMuPDF 1.26.4.
Franz Glasner <fzglas.hg@dom66.de>
parents:
diff changeset
180 const std::unique_ptr<const char[]> tsv(api->GetTSVText(imagenum()));
b50eed0cc0ef ADD: MuPDF v1.26.7: the MuPDF source as downloaded by a default build of PyMuPDF 1.26.4.
Franz Glasner <fzglas.hg@dom66.de>
parents:
diff changeset
181 if (tsv == nullptr) {
b50eed0cc0ef ADD: MuPDF v1.26.7: the MuPDF source as downloaded by a default build of PyMuPDF 1.26.4.
Franz Glasner <fzglas.hg@dom66.de>
parents:
diff changeset
182 return false;
b50eed0cc0ef ADD: MuPDF v1.26.7: the MuPDF source as downloaded by a default build of PyMuPDF 1.26.4.
Franz Glasner <fzglas.hg@dom66.de>
parents:
diff changeset
183 }
b50eed0cc0ef ADD: MuPDF v1.26.7: the MuPDF source as downloaded by a default build of PyMuPDF 1.26.4.
Franz Glasner <fzglas.hg@dom66.de>
parents:
diff changeset
184
b50eed0cc0ef ADD: MuPDF v1.26.7: the MuPDF source as downloaded by a default build of PyMuPDF 1.26.4.
Franz Glasner <fzglas.hg@dom66.de>
parents:
diff changeset
185 AppendString(tsv.get());
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Franz Glasner <fzglas.hg@dom66.de>
parents:
diff changeset
186
b50eed0cc0ef ADD: MuPDF v1.26.7: the MuPDF source as downloaded by a default build of PyMuPDF 1.26.4.
Franz Glasner <fzglas.hg@dom66.de>
parents:
diff changeset
187 return true;
b50eed0cc0ef ADD: MuPDF v1.26.7: the MuPDF source as downloaded by a default build of PyMuPDF 1.26.4.
Franz Glasner <fzglas.hg@dom66.de>
parents:
diff changeset
188 }
b50eed0cc0ef ADD: MuPDF v1.26.7: the MuPDF source as downloaded by a default build of PyMuPDF 1.26.4.
Franz Glasner <fzglas.hg@dom66.de>
parents:
diff changeset
189
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Franz Glasner <fzglas.hg@dom66.de>
parents:
diff changeset
190 /**********************************************************************
b50eed0cc0ef ADD: MuPDF v1.26.7: the MuPDF source as downloaded by a default build of PyMuPDF 1.26.4.
Franz Glasner <fzglas.hg@dom66.de>
parents:
diff changeset
191 * UNLV Text Renderer interface implementation
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Franz Glasner <fzglas.hg@dom66.de>
parents:
diff changeset
192 **********************************************************************/
b50eed0cc0ef ADD: MuPDF v1.26.7: the MuPDF source as downloaded by a default build of PyMuPDF 1.26.4.
Franz Glasner <fzglas.hg@dom66.de>
parents:
diff changeset
193 TessUnlvRenderer::TessUnlvRenderer(const char *outputbase)
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Franz Glasner <fzglas.hg@dom66.de>
parents:
diff changeset
194 : TessResultRenderer(outputbase, "unlv") {}
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parents:
diff changeset
195
b50eed0cc0ef ADD: MuPDF v1.26.7: the MuPDF source as downloaded by a default build of PyMuPDF 1.26.4.
Franz Glasner <fzglas.hg@dom66.de>
parents:
diff changeset
196 bool TessUnlvRenderer::AddImageHandler(TessBaseAPI *api) {
b50eed0cc0ef ADD: MuPDF v1.26.7: the MuPDF source as downloaded by a default build of PyMuPDF 1.26.4.
Franz Glasner <fzglas.hg@dom66.de>
parents:
diff changeset
197 const std::unique_ptr<const char[]> unlv(api->GetUNLVText());
b50eed0cc0ef ADD: MuPDF v1.26.7: the MuPDF source as downloaded by a default build of PyMuPDF 1.26.4.
Franz Glasner <fzglas.hg@dom66.de>
parents:
diff changeset
198 if (unlv == nullptr) {
b50eed0cc0ef ADD: MuPDF v1.26.7: the MuPDF source as downloaded by a default build of PyMuPDF 1.26.4.
Franz Glasner <fzglas.hg@dom66.de>
parents:
diff changeset
199 return false;
b50eed0cc0ef ADD: MuPDF v1.26.7: the MuPDF source as downloaded by a default build of PyMuPDF 1.26.4.
Franz Glasner <fzglas.hg@dom66.de>
parents:
diff changeset
200 }
b50eed0cc0ef ADD: MuPDF v1.26.7: the MuPDF source as downloaded by a default build of PyMuPDF 1.26.4.
Franz Glasner <fzglas.hg@dom66.de>
parents:
diff changeset
201
b50eed0cc0ef ADD: MuPDF v1.26.7: the MuPDF source as downloaded by a default build of PyMuPDF 1.26.4.
Franz Glasner <fzglas.hg@dom66.de>
parents:
diff changeset
202 AppendString(unlv.get());
b50eed0cc0ef ADD: MuPDF v1.26.7: the MuPDF source as downloaded by a default build of PyMuPDF 1.26.4.
Franz Glasner <fzglas.hg@dom66.de>
parents:
diff changeset
203
b50eed0cc0ef ADD: MuPDF v1.26.7: the MuPDF source as downloaded by a default build of PyMuPDF 1.26.4.
Franz Glasner <fzglas.hg@dom66.de>
parents:
diff changeset
204 return true;
b50eed0cc0ef ADD: MuPDF v1.26.7: the MuPDF source as downloaded by a default build of PyMuPDF 1.26.4.
Franz Glasner <fzglas.hg@dom66.de>
parents:
diff changeset
205 }
b50eed0cc0ef ADD: MuPDF v1.26.7: the MuPDF source as downloaded by a default build of PyMuPDF 1.26.4.
Franz Glasner <fzglas.hg@dom66.de>
parents:
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206
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207 /**********************************************************************
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208 * BoxText Renderer interface implementation
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209 **********************************************************************/
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210 TessBoxTextRenderer::TessBoxTextRenderer(const char *outputbase)
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211 : TessResultRenderer(outputbase, "box") {}
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212
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213 bool TessBoxTextRenderer::AddImageHandler(TessBaseAPI *api) {
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214 const std::unique_ptr<const char[]> text(api->GetBoxText(imagenum()));
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215 if (text == nullptr) {
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216 return false;
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217 }
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218
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219 AppendString(text.get());
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220
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221 return true;
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222 }
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223
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224 #ifndef DISABLED_LEGACY_ENGINE
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225
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226 /**********************************************************************
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227 * Osd Text Renderer interface implementation
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228 **********************************************************************/
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229 TessOsdRenderer::TessOsdRenderer(const char *outputbase) : TessResultRenderer(outputbase, "osd") {}
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230
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231 bool TessOsdRenderer::AddImageHandler(TessBaseAPI *api) {
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232 const std::unique_ptr<const char[]> osd(api->GetOsdText(imagenum()));
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233 if (osd == nullptr) {
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234 return false;
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235 }
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236
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237 AppendString(osd.get());
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238
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239 return true;
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240 }
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241
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242 #endif // ndef DISABLED_LEGACY_ENGINE
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243
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244 } // namespace tesseract