Mercurial > hgrepos > Python2 > PyMuPDF

annotate mupdf-source/thirdparty/tesseract/src/ccutil/ccutil.cpp @ 38:8934ac156ef5

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Allow to build with the PyPI package "clang" instead of "libclang". 1. It seems to be maintained. 2. In the FreeBSD base system there is no pre-built libclang.so. If you need this library you have to install llvm from ports additionally. 2. On FreeBSD there is no pre-built wheel "libclang" with a packaged libclang.so.
author Franz Glasner <fzglas.hg@dom66.de>
date Tue, 23 Sep 2025 10:27:15 +0200
parents b50eed0cc0ef
children
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1 // Copyright 2008 Google Inc. All Rights Reserved.
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2 // Author: scharron@google.com (Samuel Charron)
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3 // Licensed under the Apache License, Version 2.0 (the "License");
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4 // you may not use this file except in compliance with the License.
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5 // You may obtain a copy of the License at
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6 // http://www.apache.org/licenses/LICENSE-2.0
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7 // Unless required by applicable law or agreed to in writing, software
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8 // distributed under the License is distributed on an "AS IS" BASIS,
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9 // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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10 // See the License for the specific language governing permissions and
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11 // limitations under the License.
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13 #include "ccutil.h"
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14 #include "tprintf.h" // for tprintf
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16 #include <cstdlib>
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17 #include <cstring> // for std::strrchrA
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18 #include <filesystem> // for std::filesystem
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20 namespace tesseract {
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22 CCUtil::CCUtil()
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23 : params_()
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24 , INT_INIT_MEMBER(ambigs_debug_level, 0, "Debug level for unichar ambiguities", &params_)
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25 , BOOL_MEMBER(use_ambigs_for_adaption, false,
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26 "Use ambigs for deciding"
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27 " whether to adapt to a character",
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28 &params_) {}
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30 // Destructor.
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31 // It is defined here, so the compiler can create a single vtable
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32 // instead of weak vtables in every compilation unit.
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33 CCUtil::~CCUtil() = default;
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35 /**
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36 * @brief CCUtil::main_setup - set location of tessdata and name of image
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37 *
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38 * @param argv0 - paths to the directory with language files and config files.
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39 * An actual value of argv0 is used if not nullptr, otherwise TESSDATA_PREFIX is
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40 * used if not nullptr, next try to use compiled in -DTESSDATA_PREFIX. If
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41 * previous is not successful - use current directory.
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42 * @param basename - name of image
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43 */
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44 void CCUtil::main_setup(const std::string &argv0, const std::string &basename) {
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45 imagebasename = basename; /**< name of image */
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47 const char *tessdata_prefix = getenv("TESSDATA_PREFIX");
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48
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49 // Ignore TESSDATA_PREFIX if there is no matching filesystem entry.
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50 if (tessdata_prefix != nullptr && !std::filesystem::exists(tessdata_prefix)) {
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51 tprintf("Warning: TESSDATA_PREFIX %s does not exist, ignore it\n", tessdata_prefix);
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52 tessdata_prefix = nullptr;
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53 }
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55 if (!argv0.empty()) {
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56 /* Use tessdata prefix from the command line. */
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57 datadir = argv0;
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58 } else if (tessdata_prefix) {
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59 /* Use tessdata prefix from the environment. */
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60 datadir = tessdata_prefix;
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61 #if defined(_WIN32)
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62 } else if (datadir.empty() || !std::filesystem::exists(datadir)) {
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63 /* Look for tessdata in directory of executable. */
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64 char path[_MAX_PATH];
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65 DWORD length = GetModuleFileName(nullptr, path, sizeof(path));
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66 if (length > 0 && length < sizeof(path)) {
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67 char *separator = std::strrchr(path, '\\');
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68 if (separator != nullptr) {
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69 *separator = '\0';
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70 std::string subdir = path;
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71 subdir += "/tessdata";
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72 if (std::filesystem::exists(subdir)) {
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73 datadir = subdir;
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74 }
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75 }
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76 }
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77 #endif /* _WIN32 */
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78 }
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79
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80 // datadir may still be empty:
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81 if (datadir.empty()) {
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82 #if defined(TESSDATA_PREFIX)
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83 // Use tessdata prefix which was compiled in.
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84 datadir = TESSDATA_PREFIX "/tessdata/";
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85 // Note that some software (for example conda) patches TESSDATA_PREFIX
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86 // in the binary, so it might be shorter. Recalculate its length.
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87 datadir.resize(std::strlen(datadir.c_str()));
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88 #else
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89 datadir = "./";
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90 #endif /* TESSDATA_PREFIX */
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91 }
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92
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93 // check for missing directory separator
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94 const char lastchar = datadir.back();
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95 if (lastchar != '/' && lastchar != '\\') {
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96 datadir += '/';
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97 }
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
98 }
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
99
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
100 } // namespace tesseract