/usr/include/mia-2.2/mia/core/tools.hh is in libmia-2.2-dev 2.2.2-1+b1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 | /* -*- mia-c++ -*-
*
* This file is part of MIA - a toolbox for medical image analysis
* Copyright (c) Leipzig, Madrid 1999-2014 Gert Wollny
*
* MIA is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with MIA; if not, see <http://www.gnu.org/licenses/>.
*
*/
#ifndef mia_core_tools_hh
#define mia_core_tools_hh
#include <sstream>
#include <string>
#include <boost/call_traits.hpp>
#include <memory>
#include <cmath>
#include <mia/core/defines.hh>
#include <mia/core/errormacro.hh>
NS_MIA_BEGIN
/**
\ingroup misc
\brief A helper class to make it possible to store a non-pointer object or a pointer that must not be freed
in a shared pointer
\tparam the type type be stored
*/
template <typename T>
struct void_destructor {
virtual void operator () (T *) {
}
};
/**
\brief functor to wrap statically allocated data a shared pointer representation
This functor wraps a statically allocated data into a std::shared_ptr.
The data must not be constant and it well not be freed when the shared_ptr is destoyed.
The functor is designed to be usable by the std::transform function.
\tparam Data the data type to be wrapped into the shared pointer;
*/
template <typename Data>
class FWrapStaticDataInSharedPointer {
public:
typedef std::shared_ptr<Data> PData;
PData operator () (Data& d) const {
return PData(&d, void_destructor<Data>());
}
};
/**
\ingroup misc
Function to convert a streamable type from a string to a value.
The string may contain whitespaces before and after the value but no other characters.
\tparam T some type that supports the >> stream operator
\param s the c-string holding the value
\param [out] result value of T corresponding to s
\returns true if s could be parsed sucessfully, and false if not
*/
template <typename T>
bool from_string(const char *s, T& result)
{
std::istringstream sx(s);
sx >> result;
if (sx.fail())
return false;
if (sx.eof())
return true;
std::string remaining;
sx >> remaining;
bool retval = true;
for(auto i = remaining.begin(); i != remaining.end(); ++i)
retval &= isspace(remaining[0]);
return retval;
}
/**
\ingroup misc
Function to convert a streamable type from a string to a value.
The string may contain whitespaces before and after the value but no other characters.
\tparam T some type that supports the >> stream operator
\param s the c-string holding the value
\param [out] result value of T corresponding to s
\returns true if s could be parsed sucessfully, and false if not
*/
template <typename T>
bool from_string(const std::string& s, T& result)
{
return from_string(s.c_str(), result);
}
/**
\ingroup misc
Function to convert a streamable type from to a string
\tparam T some type that supports the << stream operator
\param v the value to be converted
\returns string that corresponds to v
*/
template <typename T>
const std::string to_string(typename boost::call_traits<T>::param_type v)
{
std::stringstream result;
result << v;
return result.str();
}
/*
The special handling of floating point values is needed,
because c++ writes out inf/-inf for infinity, but XML
expects uppercase INF/-INF.
*/
template <typename T>
const std::string to_string_fp(T v)
{
std::stringstream result;
int inf = std::isinf(v);
if (!inf) {
result << v;
} else {
if (inf < 0)
result << "-";
result << "INF";
}
return result.str();
}
template <>
inline const std::string to_string<float>(boost::call_traits<float>::param_type v)
{
return to_string_fp(v);
}
template <>
inline const std::string to_string<double>(boost::call_traits<double>::param_type v)
{
return to_string_fp(v);
}
NS_MIA_END
#endif
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