Mercurial > hgrepos > Python2 > PyMuPDF

annotate mupdf-source/thirdparty/tesseract/src/training/unicharset/fileio.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: fileio.cpp
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3 * Description: File I/O utilities.
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4 * Author: Samuel Charron
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5 *
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6 * (C) Copyright 2013, Google Inc.
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7 * Licensed under the Apache License, Version 2.0 (the "License"); you may not
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8 * use this file except in compliance with the License. You may obtain a copy
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9 * of the License at http://www.apache.org/licenses/LICENSE-2.0 Unless required
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10 * by applicable law or agreed to in writing, software distributed under the
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11 * License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS
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12 * OF ANY KIND, either express or implied. See the License for the specific
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13 * language governing permissions and limitations under the License.
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14 *
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15 **********************************************************************/
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16
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17 #ifdef _WIN32
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18 # ifndef unlink
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19 # include <io.h>
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20 # endif
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21 #else
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22 # include <glob.h>
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23 # include <unistd.h>
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24 #endif
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25
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26 #include <cerrno>
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27 #include <cstdio>
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28 #include <cstdlib>
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29 #include <string>
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30
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31 #include "errcode.h"
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32 #include "fileio.h"
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33 #include "host.h" // includes windows.h for BOOL, ...
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34 #include "tprintf.h"
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35
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36 namespace tesseract {
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38 ///////////////////////////////////////////////////////////////////////////////
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39 // File::
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40 ///////////////////////////////////////////////////////////////////////////////
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41 FILE *File::Open(const std::string &filename, const std::string &mode) {
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42 return fopen(filename.c_str(), mode.c_str());
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43 }
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44
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45 FILE *File::OpenOrDie(const std::string &filename, const std::string &mode) {
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46 FILE *stream = fopen(filename.c_str(), mode.c_str());
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47 if (stream == nullptr) {
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48 tprintf("Unable to open '%s' in mode '%s': %s\n", filename.c_str(), mode.c_str(),
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49 strerror(errno));
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50 }
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51 return stream;
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52 }
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53
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54 void File::WriteStringToFileOrDie(const std::string &str, const std::string &filename) {
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55 FILE *stream = fopen(filename.c_str(), "wb");
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56 if (stream == nullptr) {
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57 tprintf("Unable to open '%s' for writing: %s\n", filename.c_str(), strerror(errno));
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58 return;
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59 }
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60 fputs(str.c_str(), stream);
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61 ASSERT_HOST(fclose(stream) == 0);
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62 }
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63
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64 bool File::Readable(const std::string &filename) {
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65 FILE *stream = fopen(filename.c_str(), "rb");
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66 if (stream == nullptr) {
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67 return false;
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68 }
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69 fclose(stream);
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70 return true;
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71 }
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72
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73 bool File::ReadFileToString(const std::string &filename, std::string *out) {
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74 FILE *stream = File::Open(filename, "rb");
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75 if (stream == nullptr) {
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76 return false;
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77 }
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78 InputBuffer in(stream);
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79 *out = "";
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80 in.Read(out);
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81 return in.CloseFile();
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82 }
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83
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84 std::string File::JoinPath(const std::string &prefix, const std::string &suffix) {
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85 return (prefix.empty() || prefix[prefix.size() - 1] == '/') ? prefix + suffix
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86 : prefix + "/" + suffix;
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87 }
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88
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89 bool File::Delete(const char *pathname) {
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90 #if !defined(_WIN32) || defined(__MINGW32__)
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91 const int status = unlink(pathname);
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92 #else
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93 const int status = _unlink(pathname);
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94 #endif
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95 if (status != 0) {
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96 tprintf("ERROR: Unable to delete file '%s$: %s\n", pathname, strerror(errno));
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97 return false;
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98 }
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99 return true;
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100 }
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101
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102 #ifdef _WIN32
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103 bool File::DeleteMatchingFiles(const char *pattern) {
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104 WIN32_FIND_DATA data;
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105 BOOL result = TRUE;
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106 HANDLE handle = FindFirstFile(pattern, &data);
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107 bool all_deleted = true;
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108 if (handle != INVALID_HANDLE_VALUE) {
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109 for (; result; result = FindNextFile(handle, &data)) {
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110 all_deleted &= File::Delete(data.cFileName);
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111 }
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112 FindClose(handle);
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113 }
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114 return all_deleted;
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115 }
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116 #else
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117 bool File::DeleteMatchingFiles(const char *pattern) {
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118 glob_t pglob;
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119 char **paths;
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120 bool all_deleted = true;
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121 if (glob(pattern, 0, nullptr, &pglob) == 0) {
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122 for (paths = pglob.gl_pathv; *paths != nullptr; paths++) {
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123 all_deleted &= File::Delete(*paths);
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124 }
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125 globfree(&pglob);
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126 }
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127 return all_deleted;
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128 }
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129 #endif
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130
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131 ///////////////////////////////////////////////////////////////////////////////
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132 // InputBuffer::
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133 ///////////////////////////////////////////////////////////////////////////////
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134 InputBuffer::InputBuffer(FILE *stream) : stream_(stream) {}
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135
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136 InputBuffer::InputBuffer(FILE *stream, size_t) : stream_(stream) {}
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137
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138 InputBuffer::~InputBuffer() {
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139 if (stream_ != nullptr) {
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140 fclose(stream_);
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141 }
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142 }
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143
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144 bool InputBuffer::Read(std::string *out) {
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145 char buf[BUFSIZ + 1];
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146 int l;
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147 while ((l = fread(buf, 1, BUFSIZ, stream_)) > 0) {
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148 if (ferror(stream_)) {
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149 clearerr(stream_);
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150 return false;
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151 }
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152 buf[l] = 0;
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153 out->append(buf);
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154 }
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155 return true;
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156 }
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157
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158 bool InputBuffer::CloseFile() {
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159 int ret = fclose(stream_);
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160 stream_ = nullptr;
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161 return ret == 0;
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162 }
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163
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164 ///////////////////////////////////////////////////////////////////////////////
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165 // OutputBuffer::
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166 ///////////////////////////////////////////////////////////////////////////////
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167
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168 OutputBuffer::OutputBuffer(FILE *stream) : stream_(stream) {}
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169
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170 OutputBuffer::OutputBuffer(FILE *stream, size_t) : stream_(stream) {}
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171
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172 OutputBuffer::~OutputBuffer() {
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173 if (stream_ != nullptr) {
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174 fclose(stream_);
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175 }
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176 }
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177
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178 void OutputBuffer::WriteString(const std::string &str) {
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179 fputs(str.c_str(), stream_);
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180 }
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181
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182 bool OutputBuffer::CloseFile() {
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183 int ret = fclose(stream_);
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184 stream_ = nullptr;
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185 return ret == 0;
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186 }
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187
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188 } // namespace tesseract