ome-common 5.3.2

filesystem.h
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1 /*
2 * #%L
3 * OME-COMMON C++ library for C++ compatibility/portability
4 * %%
5 * Copyright © 2006 - 2016 Open Microscopy Environment:
6 * - Massachusetts Institute of Technology
7 * - National Institutes of Health
8 * - University of Dundee
9 * - Board of Regents of the University of Wisconsin-Madison
10 * - Glencoe Software, Inc.
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13 * modification, are permitted provided that the following conditions are met:
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16 * this list of conditions and the following disclaimer.
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37 */
38
46 #ifndef OME_COMMON_FILESYSTEM_H
47 # define OME_COMMON_FILESYSTEM_H
48
49 # include <ome/common/config.h>
50
51 #include <boost/filesystem/operations.hpp>
52 #include <boost/filesystem/path.hpp>
53
54 namespace ome
55 {
56
60 namespace common
61 {
62
64 using boost::filesystem::absolute;
66 using boost::filesystem::canonical;
67
75 inline
76 boost::filesystem::path
77 make_relative(boost::filesystem::path from,
78 boost::filesystem::path to)
79 {
80 from = absolute(from);
81 to = absolute(to);
82 boost::filesystem::path ret;
83 boost::filesystem::path::const_iterator itrFrom(from.begin());
84 boost::filesystem::path::const_iterator itrTo(to.begin());
85
86 // Find common base
87 for(boost::filesystem::path::const_iterator toEnd(to.end()), fromEnd(from.end());
88 itrFrom != fromEnd && itrTo != toEnd && *itrFrom == *itrTo;
89 ++itrFrom, ++itrTo);
90
91 // Navigate backwards in directory to reach previously found base
92 for(boost::filesystem::path::const_iterator fromEnd(from.end());
93 itrFrom != fromEnd;
94 ++itrFrom )
95 {
96 if((*itrFrom) != ".")
97 ret /= "..";
98 }
99 // Now navigate down the directory branch
100 for (boost::filesystem::path::iterator begin = itrTo;
101 begin != to.end();
102 ++begin)
103 ret /= *begin;
104
105 return ret;
106 }
107
108 }
109 }
110
111 #endif // OME_COMMON_FILESYSTEM_H
112
113 /*
114 * Local Variables:
115 * mode:C++
116 * End:
117 */
ome::common::make_relative
boost::filesystem::path make_relative(boost::filesystem::path from, boost::filesystem::path to)
Make a relative path.
Definition: filesystem.h:77
ome
Open Microscopy Environment C++.
Definition: base64.h:49