Mercurial > hgrepos > Python2 > PyMuPDF

annotate mupdf-source/thirdparty/tesseract/src/classify/cutoffs.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
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1 /******************************************************************************
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2 ** Filename: cutoffs.c
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3 ** Purpose: Routines to manipulate an array of class cutoffs.
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4 ** Author: Dan Johnson
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5 **
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6 ** (c) Copyright Hewlett-Packard Company, 1988.
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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 Include Files and Type Defines
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19 ----------------------------------------------------------------------------*/
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21 #include <cstdio>
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22 #include <sstream> // for std::istringstream
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23 #include <string> // for std::string
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25 #include <tesseract/unichar.h>
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26 #include "classify.h"
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27 #include "helpers.h"
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28 #include "serialis.h"
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30 #define MAX_CUTOFF 1000
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32 namespace tesseract {
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33 /**
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34 * Open file, read in all of the class-id/cutoff pairs
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35 * and insert them into the Cutoffs array. Cutoffs are
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36 * indexed in the array by class id. Unused entries in the
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37 * array are set to an arbitrarily high cutoff value.
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38 * @param fp file containing cutoff definitions
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39 * @param Cutoffs array to put cutoffs into
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40 */
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41 void Classify::ReadNewCutoffs(TFile *fp, uint16_t *Cutoffs) {
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42 int Cutoff;
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44 if (shape_table_ != nullptr) {
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45 if (!fp->DeSerialize(shapetable_cutoffs_)) {
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46 tprintf("Error during read of shapetable pffmtable!\n");
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47 }
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48 }
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49 for (int i = 0; i < MAX_NUM_CLASSES; i++) {
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50 Cutoffs[i] = MAX_CUTOFF;
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51 }
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53 const int kMaxLineSize = 100;
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54 char line[kMaxLineSize];
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55 while (fp->FGets(line, kMaxLineSize) != nullptr) {
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56 std::string Class;
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57 CLASS_ID ClassId;
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58 std::istringstream stream(line);
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59 stream.imbue(std::locale::classic());
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60 stream >> Class >> Cutoff;
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61 if (stream.fail()) {
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62 break;
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63 }
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64 if (Class.compare("NULL") == 0) {
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65 ClassId = unicharset.unichar_to_id(" ");
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66 } else {
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67 ClassId = unicharset.unichar_to_id(Class.c_str());
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68 }
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69 ASSERT_HOST(ClassId >= 0 && ClassId < MAX_NUM_CLASSES);
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70 Cutoffs[ClassId] = Cutoff;
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71 }
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72 }
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73
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74 } // namespace tesseract