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comparison OrthancFramework/Sources/DicomFormat/DicomValue.cpp @ 4044:d25f4c0fa160 framework

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splitting code into OrthancFramework and OrthancServer
author Sebastien Jodogne <s.jodogne@gmail.com>
date Wed, 10 Jun 2020 20:30:34 +0200
parents Core/DicomFormat/DicomValue.cpp@a9ce35d67c3c
children bf7b9edf6b81
comparison
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4043:6c6239aec462 4044:d25f4c0fa160
1 /**
2 * Orthanc - A Lightweight, RESTful DICOM Store
3 * Copyright (C) 2012-2016 Sebastien Jodogne, Medical Physics
4 * Department, University Hospital of Liege, Belgium
5 * Copyright (C) 2017-2020 Osimis S.A., Belgium
6 *
7 * This program is free software: you can redistribute it and/or
8 * modify it under the terms of the GNU General Public License as
9 * published by the Free Software Foundation, either version 3 of the
10 * License, or (at your option) any later version.
11 *
12 * In addition, as a special exception, the copyright holders of this
13 * program give permission to link the code of its release with the
14 * OpenSSL project's "OpenSSL" library (or with modified versions of it
15 * that use the same license as the "OpenSSL" library), and distribute
16 * the linked executables. You must obey the GNU General Public License
17 * in all respects for all of the code used other than "OpenSSL". If you
18 * modify file(s) with this exception, you may extend this exception to
19 * your version of the file(s), but you are not obligated to do so. If
20 * you do not wish to do so, delete this exception statement from your
21 * version. If you delete this exception statement from all source files
22 * in the program, then also delete it here.
23 *
24 * This program is distributed in the hope that it will be useful, but
25 * WITHOUT ANY WARRANTY; without even the implied warranty of
26 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
27 * General Public License for more details.
28 *
29 * You should have received a copy of the GNU General Public License
30 * along with this program. If not, see <http://www.gnu.org/licenses/>.
31 **/
32
33
34 #include "../PrecompiledHeaders.h"
35 #include "DicomValue.h"
36
37 #include "../OrthancException.h"
38 #include "../SerializationToolbox.h"
39 #include "../Toolbox.h"
40
41 #include <boost/lexical_cast.hpp>
42
43 namespace Orthanc
44 {
45 DicomValue::DicomValue(const DicomValue& other) :
46 type_(other.type_),
47 content_(other.content_)
48 {
49 }
50
51
52 DicomValue::DicomValue(const std::string& content,
53 bool isBinary) :
54 type_(isBinary ? Type_Binary : Type_String),
55 content_(content)
56 {
57 }
58
59
60 DicomValue::DicomValue(const char* data,
61 size_t size,
62 bool isBinary) :
63 type_(isBinary ? Type_Binary : Type_String)
64 {
65 content_.assign(data, size);
66 }
67
68
69 const std::string& DicomValue::GetContent() const
70 {
71 if (type_ == Type_Null)
72 {
73 throw OrthancException(ErrorCode_BadParameterType);
74 }
75 else
76 {
77 return content_;
78 }
79 }
80
81
82 DicomValue* DicomValue::Clone() const
83 {
84 return new DicomValue(*this);
85 }
86
87
88 #if ORTHANC_ENABLE_BASE64 == 1
89 void DicomValue::FormatDataUriScheme(std::string& target,
90 const std::string& mime) const
91 {
92 Toolbox::EncodeBase64(target, GetContent());
93 target.insert(0, "data:" + mime + ";base64,");
94 }
95 #endif
96
97 // same as ParseValue but in case the value actually contains a sequence,
98 // it will return the first value
99 // this has been introduced to support invalid "width/height" DICOM tags in some US
100 // images where the width is stored as "800\0" !
101 template <typename T,
102 bool allowSigned>
103 static bool ParseFirstValue(T& result,
104 const DicomValue& source)
105 {
106 if (source.IsBinary() ||
107 source.IsNull())
108 {
109 return false;
110 }
111
112 try
113 {
114 std::string value = Toolbox::StripSpaces(source.GetContent());
115 if (value.empty())
116 {
117 return false;
118 }
119
120 if (!allowSigned &&
121 value[0] == '-')
122 {
123 return false;
124 }
125
126 if (value.find("\\") == std::string::npos)
127 {
128 result = boost::lexical_cast<T>(value);
129 return true;
130 }
131 else
132 {
133 std::vector<std::string> tokens;
134 Toolbox::TokenizeString(tokens, value, '\\');
135
136 if (tokens.size() >= 1)
137 {
138 result = boost::lexical_cast<T>(tokens[0]);
139 return true;
140 }
141
142 return false;
143 }
144 }
145 catch (boost::bad_lexical_cast&)
146 {
147 return false;
148 }
149 }
150
151
152 template <typename T,
153 bool allowSigned>
154 static bool ParseValue(T& result,
155 const DicomValue& source)
156 {
157 if (source.IsBinary() ||
158 source.IsNull())
159 {
160 return false;
161 }
162
163 try
164 {
165 std::string value = Toolbox::StripSpaces(source.GetContent());
166 if (value.empty())
167 {
168 return false;
169 }
170
171 if (!allowSigned &&
172 value[0] == '-')
173 {
174 return false;
175 }
176
177 result = boost::lexical_cast<T>(value);
178 return true;
179 }
180 catch (boost::bad_lexical_cast&)
181 {
182 return false;
183 }
184 }
185
186 bool DicomValue::ParseInteger32(int32_t& result) const
187 {
188 int64_t tmp;
189 if (ParseValue<int64_t, true>(tmp, *this))
190 {
191 result = static_cast<int32_t>(tmp);
192 return (tmp == static_cast<int64_t>(result)); // Check no overflow occurs
193 }
194 else
195 {
196 return false;
197 }
198 }
199
200 bool DicomValue::ParseInteger64(int64_t& result) const
201 {
202 return ParseValue<int64_t, true>(result, *this);
203 }
204
205 bool DicomValue::ParseUnsignedInteger32(uint32_t& result) const
206 {
207 uint64_t tmp;
208 if (ParseValue<uint64_t, false>(tmp, *this))
209 {
210 result = static_cast<uint32_t>(tmp);
211 return (tmp == static_cast<uint64_t>(result)); // Check no overflow occurs
212 }
213 else
214 {
215 return false;
216 }
217 }
218
219 bool DicomValue::ParseUnsignedInteger64(uint64_t& result) const
220 {
221 return ParseValue<uint64_t, false>(result, *this);
222 }
223
224 bool DicomValue::ParseFloat(float& result) const
225 {
226 return ParseValue<float, true>(result, *this);
227 }
228
229 bool DicomValue::ParseDouble(double& result) const
230 {
231 return ParseValue<double, true>(result, *this);
232 }
233
234 bool DicomValue::ParseFirstFloat(float& result) const
235 {
236 return ParseFirstValue<float, true>(result, *this);
237 }
238
239 bool DicomValue::ParseFirstUnsignedInteger(unsigned int& result) const
240 {
241 return ParseFirstValue<unsigned int, true>(result, *this);
242 }
243
244 bool DicomValue::CopyToString(std::string& result,
245 bool allowBinary) const
246 {
247 if (IsNull())
248 {
249 return false;
250 }
251 else if (IsBinary() && !allowBinary)
252 {
253 return false;
254 }
255 else
256 {
257 result.assign(content_);
258 return true;
259 }
260 }
261
262
263 static const char* KEY_TYPE = "Type";
264 static const char* KEY_CONTENT = "Content";
265
266 void DicomValue::Serialize(Json::Value& target) const
267 {
268 target = Json::objectValue;
269
270 switch (type_)
271 {
272 case Type_Null:
273 target[KEY_TYPE] = "Null";
274 break;
275
276 case Type_String:
277 target[KEY_TYPE] = "String";
278 target[KEY_CONTENT] = content_;
279 break;
280
281 case Type_Binary:
282 {
283 target[KEY_TYPE] = "Binary";
284
285 std::string base64;
286 Toolbox::EncodeBase64(base64, content_);
287 target[KEY_CONTENT] = base64;
288 break;
289 }
290
291 default:
292 throw OrthancException(ErrorCode_InternalError);
293 }
294 }
295
296 void DicomValue::Unserialize(const Json::Value& source)
297 {
298 std::string type = SerializationToolbox::ReadString(source, KEY_TYPE);
299
300 if (type == "Null")
301 {
302 type_ = Type_Null;
303 content_.clear();
304 }
305 else if (type == "String")
306 {
307 type_ = Type_String;
308 content_ = SerializationToolbox::ReadString(source, KEY_CONTENT);
309 }
310 else if (type == "Binary")
311 {
312 type_ = Type_Binary;
313
314 const std::string base64 =SerializationToolbox::ReadString(source, KEY_CONTENT);
315 Toolbox::DecodeBase64(content_, base64);
316 }
317 else
318 {
319 throw OrthancException(ErrorCode_BadFileFormat);
320 }
321 }
322 }