Mercurial > hg > orthanc
comparison Core/HttpServer/StringMatcher.cpp @ 3398:4acd1431e603
new classes: StringMatcher and MultipartStreamReader
author | Sebastien Jodogne <s.jodogne@gmail.com> |
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date | Fri, 07 Jun 2019 13:36:43 +0200 |
parents | |
children | 630fc934597f |
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3397:9019279dbfd7 | 3398:4acd1431e603 |
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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) 2017-2019 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 "StringMatcher.h" | |
36 | |
37 #include "../OrthancException.h" | |
38 | |
39 #include <boost/algorithm/searching/boyer_moore.hpp> | |
40 //#include <boost/algorithm/searching/boyer_moore_horspool.hpp> | |
41 //#include <boost/algorithm/searching/knuth_morris_pratt.hpp> | |
42 | |
43 namespace Orthanc | |
44 { | |
45 class StringMatcher::Search | |
46 { | |
47 private: | |
48 typedef boost::algorithm::boyer_moore<Iterator> Algorithm; | |
49 //typedef boost::algorithm::boyer_moore_horspool<std::string::const_iterator> Algorithm; | |
50 | |
51 Algorithm algorithm_; | |
52 | |
53 public: | |
54 Search(const std::string& pattern) : | |
55 algorithm_(pattern.begin(), pattern.end()) | |
56 { | |
57 } | |
58 | |
59 Iterator Apply(Iterator start, | |
60 Iterator end) const | |
61 { | |
62 #if BOOST_VERSION >= 106200 | |
63 return algorithm_(start, end).first; | |
64 #else | |
65 return algorithm_(start, end); | |
66 #endif | |
67 } | |
68 }; | |
69 | |
70 | |
71 StringMatcher::StringMatcher(const std::string& pattern) : | |
72 search_(new Search(pattern)), | |
73 pattern_(pattern), | |
74 valid_(false) | |
75 { | |
76 } | |
77 | |
78 | |
79 bool StringMatcher::Apply(Iterator start, | |
80 Iterator end) | |
81 { | |
82 assert(search_.get() != NULL); | |
83 matchBegin_ = search_->Apply(start, end); | |
84 | |
85 if (matchBegin_ == end) | |
86 { | |
87 valid_ = false; | |
88 } | |
89 else | |
90 { | |
91 matchEnd_ = matchBegin_ + pattern_.size(); | |
92 assert(matchEnd_ <= end); | |
93 valid_ = true; | |
94 } | |
95 | |
96 return valid_; | |
97 } | |
98 | |
99 | |
100 StringMatcher::Iterator StringMatcher::GetMatchBegin() const | |
101 { | |
102 if (valid_) | |
103 { | |
104 return matchBegin_; | |
105 } | |
106 else | |
107 { | |
108 throw OrthancException(ErrorCode_BadSequenceOfCalls); | |
109 } | |
110 } | |
111 | |
112 | |
113 StringMatcher::Iterator StringMatcher::GetMatchEnd() const | |
114 { | |
115 if (valid_) | |
116 { | |
117 return matchEnd_; | |
118 } | |
119 else | |
120 { | |
121 throw OrthancException(ErrorCode_BadSequenceOfCalls); | |
122 } | |
123 } | |
124 | |
125 | |
126 const char* StringMatcher::GetPointerBegin() const | |
127 { | |
128 return &GetMatchBegin()[0]; | |
129 } | |
130 | |
131 | |
132 const char* StringMatcher::GetPointerEnd() const | |
133 { | |
134 return &GetMatchEnd()[0]; | |
135 } | |
136 } |