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Copy pathencode.hpp
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176 lines (162 loc) · 3.11 KB
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// Copyright (c) Glyn Matthews 2011.
// Distributed under the Boost Software License, Version 1.0.
// (See accompanying file LICENSE_1_0.txt or copy at
// http://www.boost.org/LICENSE_1_0.txt)
#ifndef __BOOST_NETWORK_URI_ENCODE_INC__
# define __BOOST_NETWORK_URI_ENCODE_INC__
# include <boost/iterator/iterator_traits.hpp>
# include <boost/iterator/transform_iterator.hpp>
# include <boost/range/begin.hpp>
# include <boost/range/end.hpp>
# include <cassert>
namespace boost {
namespace network {
namespace uri {
namespace detail {
template <
typename CharT
>
inline
CharT hex_to_letter(CharT in) {
switch (in)
{
case 0:
case 1:
case 2:
case 3:
case 4:
case 5:
case 6:
case 7:
case 8:
case 9:
return in + '0';
case 10:
case 11:
case 12:
case 13:
case 14:
default:
return in - 10 + 'A';
}
return CharT();
}
template <
typename CharT,
class OutputIterator
>
void encode_char(CharT in, OutputIterator &out) {
switch (in)
{
case 'a':
case 'A':
case 'b':
case 'B':
case 'c':
case 'C':
case 'd':
case 'D':
case 'e':
case 'E':
case 'f':
case 'F':
case 'g':
case 'G':
case 'h':
case 'H':
case 'i':
case 'I':
case 'j':
case 'J':
case 'k':
case 'K':
case 'l':
case 'L':
case 'm':
case 'M':
case 'n':
case 'N':
case 'o':
case 'O':
case 'p':
case 'P':
case 'q':
case 'Q':
case 'r':
case 'R':
case 's':
case 'S':
case 't':
case 'T':
case 'u':
case 'U':
case 'v':
case 'V':
case 'w':
case 'W':
case 'x':
case 'X':
case 'y':
case 'Y':
case 'z':
case 'Z':
case '0':
case '1':
case '2':
case '3':
case '4':
case '5':
case '6':
case '7':
case '8':
case '9':
case '-':
case '.':
case '_':
case '~':
case '/':
out++ = in;
break;
default:
out++ = '%';
out++ = hex_to_letter(in >> 4);
out++ = hex_to_letter(in & 0x0f);
;
}
}
} // namespace detail
template <
class InputIterator,
class OutputIterator
>
OutputIterator encode(const InputIterator &in_begin,
const InputIterator &in_end,
const OutputIterator &out_begin) {
typedef typename boost::iterator_value<InputIterator>::type value_type;
InputIterator it = in_begin;
OutputIterator out = out_begin;
while (it != in_end) {
detail::encode_char(*it, out);
++it;
}
return out;
}
template <
class SinglePassRange,
class OutputIterator
>
inline
OutputIterator encode(const SinglePassRange &range,
const OutputIterator &out) {
return encode(boost::begin(range), boost::end(range), out);
}
inline
std::string encoded(const std::string &input) {
std::string encoded;
encode(input, std::back_inserter(encoded));
return encoded;
}
} // namespace uri
} // namespace network
} // namespace boost
#endif // __BOOST_NETWORK_URI_ENCODE_INC__