Mercurial > hg > orthanc

annotate Resources/Patches/dcmtk-dcdict_orthanc.cc @ 3971:b04e1b3b8a7f

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author Sebastien Jodogne <s.jodogne@gmail.com>
date Fri, 22 May 2020 16:43:21 +0200
parents 0080c9b492e5
children
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
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1 // Function by the Orthanc project to load a dictionary from a memory
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2 // buffer, which is necessary in sandboxed environments. This is an
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3 // adapted version of DcmDataDictionary::loadDictionary().
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4
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5 #include <string>
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6 #include <boost/noncopyable.hpp>
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7
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8 struct OrthancLinesIterator;
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9
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10 // This plain old C class is implemented in "../../Core/Toolbox.h"
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11 OrthancLinesIterator* OrthancLinesIterator_Create(const std::string& content);
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12
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13 bool OrthancLinesIterator_GetLine(std::string& target,
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14 const OrthancLinesIterator* iterator);
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15
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16 void OrthancLinesIterator_Next(OrthancLinesIterator* iterator);
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17
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18 void OrthancLinesIterator_Free(OrthancLinesIterator* iterator);
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19
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20
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21 class LinesIterator : public boost::noncopyable
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22 {
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23 private:
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24 OrthancLinesIterator* iterator_;
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25
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26 public:
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27 LinesIterator(const std::string& content) :
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28 iterator_(NULL)
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29 {
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30 iterator_ = OrthancLinesIterator_Create(content);
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31 }
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32
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33 ~LinesIterator()
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34 {
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35 if (iterator_ != NULL)
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36 {
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37 OrthancLinesIterator_Free(iterator_);
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38 iterator_ = NULL;
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39 }
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40 }
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41
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42 bool GetLine(std::string& target) const
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43 {
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44 if (iterator_ != NULL)
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45 {
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46 return OrthancLinesIterator_GetLine(target, iterator_);
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47 }
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48 else
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49 {
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50 return false;
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51 }
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52 }
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53
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54 void Next()
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55 {
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56 if (iterator_ != NULL)
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57 {
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58 OrthancLinesIterator_Next(iterator_);
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59 }
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60 }
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61 };
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62
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63
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64
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65 OFBool
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66 DcmDataDictionary::loadFromMemory(const std::string& content, OFBool errorIfAbsent)
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67 {
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68 int lineNumber = 0;
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69 char* lineFields[DCM_MAXDICTFIELDS + 1];
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70 int fieldsPresent;
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71 DcmDictEntry* e;
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72 int errorsEncountered = 0;
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73 OFBool errorOnThisLine = OFFalse;
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74 int i;
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75
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76 DcmTagKey key, upperKey;
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77 DcmDictRangeRestriction groupRestriction = DcmDictRange_Unspecified;
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78 DcmDictRangeRestriction elementRestriction = DcmDictRange_Unspecified;
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79 DcmVR vr;
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80 char* vrName;
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81 char* tagName;
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82 char* privCreator;
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83 int vmMin, vmMax = 1;
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84 const char* standardVersion;
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85
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86 LinesIterator iterator(content);
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87
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88 std::string line;
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89 while (iterator.GetLine(line)) {
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90 iterator.Next();
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91
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92 if (line.size() >= DCM_MAXDICTLINESIZE) {
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93 DCMDATA_ERROR("DcmDataDictionary: Too long line: " << line);
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94 continue;
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95 }
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96
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97 lineNumber++;
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98
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99 if (onlyWhitespace(line.c_str())) {
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100 continue; /* ignore this line */
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101 }
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102 if (isaCommentLine(line.c_str())) {
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103 continue; /* ignore this line */
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104 }
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105
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106 errorOnThisLine = OFFalse;
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107
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108 /* fields are tab separated */
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109 fieldsPresent = splitFields(line.c_str(), lineFields,
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110 DCM_MAXDICTFIELDS,
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111 DCM_DICT_FIELD_SEPARATOR_CHAR);
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112
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113 /* initialize dict entry fields */
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114 vrName = NULL;
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115 tagName = NULL;
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116 privCreator = NULL;
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117 vmMin = vmMax = 1;
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118 standardVersion = "DICOM";
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119
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120 switch (fieldsPresent) {
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121 case 0:
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122 case 1:
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123 case 2:
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124 DCMDATA_ERROR("DcmDataDictionary: "
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125 << "too few fields (line " << lineNumber << ")");
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126 errorOnThisLine = OFTrue;
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127 break;
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128 default:
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129 DCMDATA_ERROR("DcmDataDictionary: "
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130 << "too many fields (line " << lineNumber << "): ");
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131 errorOnThisLine = OFTrue;
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132 break;
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133 case 5:
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134 stripWhitespace(lineFields[4]);
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135 standardVersion = lineFields[4];
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136 /* drop through to next case label */
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137 case 4:
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138 /* the VM field is present */
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139 if (!parseVMField(lineFields[3], vmMin, vmMax)) {
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140 DCMDATA_ERROR("DcmDataDictionary: "
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141 << "bad VM field (line " << lineNumber << "): " << lineFields[3]);
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142 errorOnThisLine = OFTrue;
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143 }
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144 /* drop through to next case label */
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145 case 3:
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146 if (!parseWholeTagField(lineFields[0], key, upperKey,
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147 groupRestriction, elementRestriction, privCreator))
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148 {
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149 DCMDATA_ERROR("DcmDataDictionary: "
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150 << "bad Tag field (line " << lineNumber << "): " << lineFields[0]);
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151 errorOnThisLine = OFTrue;
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152 } else {
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153 /* all is OK */
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154 vrName = lineFields[1];
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155 stripWhitespace(vrName);
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156
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157 tagName = lineFields[2];
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158 stripWhitespace(tagName);
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159 }
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160 }
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161
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162 if (!errorOnThisLine) {
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163 /* check the VR Field */
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164 vr.setVR(vrName);
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165 if (vr.getEVR() == EVR_UNKNOWN) {
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166 DCMDATA_ERROR("DcmDataDictionary: "
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167 << "bad VR field (line " << lineNumber << "): " << vrName);
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168 errorOnThisLine = OFTrue;
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169 }
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170 }
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171
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172 if (!errorOnThisLine) {
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173 e = new DcmDictEntry(
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174 key.getGroup(), key.getElement(),
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175 upperKey.getGroup(), upperKey.getElement(),
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176 vr, tagName, vmMin, vmMax, standardVersion, OFTrue,
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177 privCreator);
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178
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179 e->setGroupRangeRestriction(groupRestriction);
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180 e->setElementRangeRestriction(elementRestriction);
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181 addEntry(e);
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182 }
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183
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184 for (i = 0; i < fieldsPresent; i++) {
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185 free(lineFields[i]);
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186 lineFields[i] = NULL;
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187 }
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188
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189 delete[] privCreator;
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190
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191 if (errorOnThisLine) {
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192 errorsEncountered++;
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193 }
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194 }
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195
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196 /* return OFFalse in case of errors and set internal state accordingly */
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197 if (errorsEncountered == 0) {
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198 dictionaryLoaded = OFTrue;
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199 return OFTrue;
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200 }
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201 else {
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202 dictionaryLoaded = OFFalse;
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203 return OFFalse;
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204 }
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205 }