Mercurial > hgrepos > Python2 > PyMuPDF

annotate mupdf-source/thirdparty/tesseract/src/ccutil/tesserrstream.h @ 46:7ee69f120f19 default tip

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>>>>> 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
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1 // File: tesserrstream.h
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2 // Description: C++ stream which enhances tprintf
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3 // Author: Stefan Weil
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4 //
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5 // (C) Copyright 2024
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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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16 #ifndef TESSERACT_CCUTIL_TESSERRSTREAM_H
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17 #define TESSERACT_CCUTIL_TESSERRSTREAM_H
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19 #include "tprintf.h"
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20 #include <tesseract/export.h> // for TESS_API
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22 #include <ostream> // for std::ostream
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24 namespace tesseract {
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26 class TessStreamBuf : public std::streambuf {
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27 public:
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28 TessStreamBuf() = default;
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30 protected:
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31 virtual int_type overflow(int_type c) override {
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32 if (c != EOF) {
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33 if (debugfp == nullptr) {
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34 debugfp = get_debugfp();
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35 }
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36 if (fputc(c, debugfp) == EOF) {
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37 return EOF;
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38 }
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39 }
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40 return c;
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41 }
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43 virtual std::streamsize xsputn(const char* s, std::streamsize n) override {
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44 if (debugfp == nullptr) {
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45 debugfp = get_debugfp();
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46 }
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47 return fwrite(s, 1, n, debugfp);
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48 }
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50 private:
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51 FILE *debugfp = nullptr;
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52 };
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54 class TessErrStream : public std::ostream {
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55 private:
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56 TessStreamBuf buf;
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58 public:
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59 TessErrStream() : std::ostream(nullptr), buf() {
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60 rdbuf(&buf);
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61 }
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62 };
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64 extern TESS_API TessErrStream tesserr;
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66 } // namespace tesseract
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68 #endif // TESSERACT_CCUTIL_TESSERRSTREAM_H