Mercurial > hgrepos > Python2 > PyMuPDF

annotate mupdf-source/thirdparty/zxing-cpp/core/src/Content.cpp @ 23:3b13504f9d89

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
Use the official packaging.version.Version to parse version strings. While there revert the previons change to _int_rc(): it is not needed now.
author Franz Glasner <fzglas.hg@dom66.de>
date Fri, 19 Sep 2025 12:40:07 +0200
parents b50eed0cc0ef
children
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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1 /*
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2 * Copyright 2022 Axel Waggershauser
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3 */
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4 // SPDX-License-Identifier: Apache-2.0
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6 #include "Content.h"
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8 #include "CharacterSet.h"
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9 #include "ECI.h"
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10 #include "HRI.h"
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11 #include "TextDecoder.h"
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12 #include "Utf.h"
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13 #include "ZXAlgorithms.h"
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15 #if !defined(ZXING_READERS) && !defined(ZXING_WRITERS)
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16 #include "Version.h"
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17 #endif
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19 #include <cctype>
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21 namespace ZXing {
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23 std::string ToString(ContentType type)
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24 {
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25 const char* t2s[] = {"Text", "Binary", "Mixed", "GS1", "ISO15434", "UnknownECI"};
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26 return t2s[static_cast<int>(type)];
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27 }
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29 template <typename FUNC>
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30 void Content::ForEachECIBlock(FUNC func) const
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31 {
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32 ECI defaultECI = hasECI ? ECI::ISO8859_1 : ECI::Unknown;
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33 if (encodings.empty())
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34 func(defaultECI, 0, Size(bytes));
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35 else if (encodings.front().pos != 0)
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36 func(defaultECI, 0, encodings.front().pos);
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38 for (int i = 0; i < Size(encodings); ++i) {
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39 auto [eci, start] = encodings[i];
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40 int end = i + 1 == Size(encodings) ? Size(bytes) : encodings[i + 1].pos;
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42 if (start != end)
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43 func(eci, start, end);
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44 }
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45 }
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47 void Content::switchEncoding(ECI eci, bool isECI)
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48 {
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49 // remove all non-ECI entries on first ECI entry
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50 if (isECI && !hasECI)
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51 encodings.clear();
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52 if (isECI || !hasECI)
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53 encodings.push_back({eci, Size(bytes)});
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55 hasECI |= isECI;
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56 }
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58 Content::Content() {}
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60 Content::Content(ByteArray&& bytes, SymbologyIdentifier si) : bytes(std::move(bytes)), symbology(si) {}
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62 void Content::switchEncoding(CharacterSet cs)
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63 {
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64 switchEncoding(ToECI(cs), false);
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65 }
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67 void Content::append(const Content& other)
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68 {
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69 if (!hasECI && other.hasECI)
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70 encodings.clear();
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71 if (other.hasECI || !hasECI)
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72 for (auto& e : other.encodings)
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73 encodings.push_back({e.eci, Size(bytes) + e.pos});
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74 append(other.bytes);
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76 hasECI |= other.hasECI;
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77 }
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79 void Content::erase(int pos, int n)
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80 {
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81 bytes.erase(bytes.begin() + pos, bytes.begin() + pos + n);
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82 for (auto& e : encodings)
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83 if (e.pos > pos)
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84 pos -= n;
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85 }
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87 void Content::insert(int pos, const std::string& str)
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88 {
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89 bytes.insert(bytes.begin() + pos, str.begin(), str.end());
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90 for (auto& e : encodings)
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91 if (e.pos > pos)
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92 pos += Size(str);
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93 }
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95 bool Content::canProcess() const
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96 {
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97 return std::all_of(encodings.begin(), encodings.end(), [](Encoding e) { return CanProcess(e.eci); });
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98 }
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100 std::string Content::render(bool withECI) const
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parents:
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101 {
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102 if (empty() || !canProcess())
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parents:
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103 return {};
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104
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parents:
diff changeset
105 #ifdef ZXING_READERS
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Franz Glasner <fzglas.hg@dom66.de>
parents:
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106 std::string res;
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107 if (withECI)
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parents:
diff changeset
108 res = symbology.toString(true);
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Franz Glasner <fzglas.hg@dom66.de>
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109 ECI lastECI = ECI::Unknown;
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Franz Glasner <fzglas.hg@dom66.de>
parents:
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110 auto fallbackCS = defaultCharset;
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Franz Glasner <fzglas.hg@dom66.de>
parents:
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111 if (!hasECI && fallbackCS == CharacterSet::Unknown)
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parents:
diff changeset
112 fallbackCS = guessEncoding();
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113
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parents:
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114 ForEachECIBlock([&](ECI eci, int begin, int end) {
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115 // first determine how to decode the content (choose character set)
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116 // * eci == ECI::Unknown implies !hasECI and we guess
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117 // * if !IsText(eci) the ToCharcterSet(eci) will return Unknown and we decode as binary
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118 CharacterSet cs = eci == ECI::Unknown ? fallbackCS : ToCharacterSet(eci);
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119
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120 if (withECI) {
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121 // then find the eci to report back in the ECI designator
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122 if (IsText(ToECI(cs))) // everything decoded as text is reported as utf8
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Franz Glasner <fzglas.hg@dom66.de>
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123 eci = ECI::UTF8;
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124 else if (eci == ECI::Unknown) // implies !hasECI and fallbackCS is Unknown or Binary
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125 eci = ECI::Binary;
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126
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127 if (lastECI != eci)
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128 res += ToString(eci);
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129 lastECI = eci;
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130
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131 std::string tmp;
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132 TextDecoder::Append(tmp, bytes.data() + begin, end - begin, cs);
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133 for (auto c : tmp) {
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134 res += c;
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135 if (c == '\\') // in the ECI protocol a '\' has to be doubled
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parents:
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136 res += c;
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137 }
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138 } else {
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139 TextDecoder::Append(res, bytes.data() + begin, end - begin, cs);
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140 }
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parents:
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141 });
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142
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143 return res;
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144 #else
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145 //TODO: replace by proper construction from encoded data from within zint
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parents:
diff changeset
146 return std::string(bytes.asString());
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parents:
diff changeset
147 #endif
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148 }
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149
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diff changeset
150 std::string Content::text(TextMode mode) const
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151 {
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152 switch (mode) {
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153 case TextMode::Plain: return render(false);
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parents:
diff changeset
154 case TextMode::ECI: return render(true);
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parents:
diff changeset
155 case TextMode::HRI:
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parents:
diff changeset
156 switch (type()) {
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parents:
diff changeset
157 #ifdef ZXING_READERS
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parents:
diff changeset
158 case ContentType::GS1: {
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parents:
diff changeset
159 auto plain = render(false);
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parents:
diff changeset
160 auto hri = HRIFromGS1(plain);
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Franz Glasner <fzglas.hg@dom66.de>
parents:
diff changeset
161 return hri.empty() ? plain : hri;
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parents:
diff changeset
162 }
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parents:
diff changeset
163 case ContentType::ISO15434: return HRIFromISO15434(render(false));
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Franz Glasner <fzglas.hg@dom66.de>
parents:
diff changeset
164 case ContentType::Text: return render(false);
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parents:
diff changeset
165 #endif
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Franz Glasner <fzglas.hg@dom66.de>
parents:
diff changeset
166 default: return text(TextMode::Escaped);
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parents:
diff changeset
167 }
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Franz Glasner <fzglas.hg@dom66.de>
parents:
diff changeset
168 case TextMode::Hex: return ToHex(bytes);
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Franz Glasner <fzglas.hg@dom66.de>
parents:
diff changeset
169 case TextMode::Escaped: return EscapeNonGraphical(render(false));
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parents:
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170 }
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parents:
diff changeset
171
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parents:
diff changeset
172 return {}; // silence compiler warning
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parents:
diff changeset
173 }
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parents:
diff changeset
174
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Franz Glasner <fzglas.hg@dom66.de>
parents:
diff changeset
175 std::wstring Content::utfW() const
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parents:
diff changeset
176 {
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parents:
diff changeset
177 return FromUtf8(render(false));
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parents:
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178 }
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parents:
diff changeset
179
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parents:
diff changeset
180 ByteArray Content::bytesECI() const
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parents:
diff changeset
181 {
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parents:
diff changeset
182 if (empty())
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 return {};
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parents:
diff changeset
184
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Franz Glasner <fzglas.hg@dom66.de>
parents:
diff changeset
185 std::string res = symbology.toString(true);
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parents:
diff changeset
186
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Franz Glasner <fzglas.hg@dom66.de>
parents:
diff changeset
187 ForEachECIBlock([&](ECI eci, int begin, int end) {
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 if (hasECI)
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Franz Glasner <fzglas.hg@dom66.de>
parents:
diff changeset
189 res += ToString(eci);
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parents:
diff changeset
190
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Franz Glasner <fzglas.hg@dom66.de>
parents:
diff changeset
191 for (int i = begin; i != end; ++i) {
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
192 char c = static_cast<char>(bytes[i]);
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 res += c;
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
194 if (c == '\\') // in the ECI protocol a '\' has to be doubled
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Franz Glasner <fzglas.hg@dom66.de>
parents:
diff changeset
195 res += c;
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parents:
diff changeset
196 }
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 });
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Franz Glasner <fzglas.hg@dom66.de>
parents:
diff changeset
198
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Franz Glasner <fzglas.hg@dom66.de>
parents:
diff changeset
199 return ByteArray(res);
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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 CharacterSet Content::guessEncoding() const
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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203 {
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204 #ifdef ZXING_READERS
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205 // assemble all blocks with unknown encoding
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206 ByteArray input;
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207 ForEachECIBlock([&](ECI eci, int begin, int end) {
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208 if (eci == ECI::Unknown)
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209 input.insert(input.end(), bytes.begin() + begin, bytes.begin() + end);
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210 });
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211
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212 if (input.empty())
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213 return CharacterSet::Unknown;
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214
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215 return TextDecoder::GuessEncoding(input.data(), input.size(), CharacterSet::ISO8859_1);
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216 #else
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217 return CharacterSet::Unknown;
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218 #endif
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219 }
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220
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221 ContentType Content::type() const
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222 {
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223 #ifdef ZXING_READERS
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224 if (empty())
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225 return ContentType::Text;
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226
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227 if (!canProcess())
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228 return ContentType::UnknownECI;
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229
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230 if (symbology.aiFlag == AIFlag::GS1)
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231 return ContentType::GS1;
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232
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233 // check for the absolut minimum of a ISO 15434 conforming message ("[)>" + RS + digit + digit)
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234 if (bytes.size() > 6 && bytes.asString(0, 4) == "[)>\x1E" && std::isdigit(bytes[4]) && std::isdigit(bytes[5]))
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235 return ContentType::ISO15434;
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236
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237 ECI fallback = ToECI(guessEncoding());
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238 std::vector<bool> binaryECIs;
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239 ForEachECIBlock([&](ECI eci, int begin, int end) {
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240 if (eci == ECI::Unknown)
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241 eci = fallback;
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242 binaryECIs.push_back((!IsText(eci)
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243 || (ToInt(eci) > 0 && ToInt(eci) < 28 && ToInt(eci) != 25
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244 && std::any_of(bytes.begin() + begin, bytes.begin() + end,
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245 [](auto c) { return c < 0x20 && c != 0x9 && c != 0xa && c != 0xd; }))));
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246 });
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247
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248 if (!Contains(binaryECIs, true))
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249 return ContentType::Text;
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250 if (!Contains(binaryECIs, false))
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251 return ContentType::Binary;
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252
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253 return ContentType::Mixed;
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254 #else
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255 //TODO: replace by proper construction from encoded data from within zint
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256 return ContentType::Text;
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257 #endif
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258 }
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259
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260 } // namespace ZXing