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
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
|
// Copyright (c) 2009-2014 Vladimir Batov.
// Use, modification and distribution are subject to the Boost Software License,
// Version 1.0. See http://www.boost.org/LICENSE_1_0.txt.
#ifndef BOOST_CONVERT_CONVERTER_BASE_HPP
#define BOOST_CONVERT_CONVERTER_BASE_HPP
#include <boost/convert/parameters.hpp>
#include <boost/convert/detail/is_string.hpp>
#include <cctype>
#include <cstring>
namespace boost { namespace cnv
{
namespace ARG = boost::cnv::parameter;
template<typename> struct cnvbase;
}}
#define BOOST_CNV_TO_STRING \
template<typename string_type> \
typename boost::enable_if<cnv::is_string<string_type>, void>::type \
operator()
#define BOOST_CNV_STRING_TO \
template<typename string_type> \
typename boost::enable_if<cnv::is_string<string_type>, void>::type \
operator()
#define BOOST_CNV_PARAM(param_name, param_type) \
derived_type& operator()(boost::parameter::aux::tag<ARG::type::param_name, param_type>::type const& arg)
template<typename derived_type>
struct boost::cnv::cnvbase
{
typedef cnvbase this_type;
typedef int int_type;
typedef unsigned int uint_type;
typedef long int lint_type;
typedef unsigned long int ulint_type;
typedef short int sint_type;
typedef unsigned short int usint_type;
typedef long long int llint_type;
typedef unsigned long long int ullint_type;
typedef float flt_type;
typedef double dbl_type;
typedef long double ldbl_type;
// Integration of user-types via operator>>()
template<typename type_in, typename type_out>
void
operator()(type_in const& in, boost::optional<type_out>& out) const
{
in >> out;
}
// Basic type to string
BOOST_CNV_TO_STRING ( int_type v, optional<string_type>& r) const { to_str_(v, r); }
BOOST_CNV_TO_STRING ( uint_type v, optional<string_type>& r) const { to_str_(v, r); }
BOOST_CNV_TO_STRING ( lint_type v, optional<string_type>& r) const { to_str_(v, r); }
BOOST_CNV_TO_STRING ( llint_type v, optional<string_type>& r) const { to_str_(v, r); }
BOOST_CNV_TO_STRING ( ulint_type v, optional<string_type>& r) const { to_str_(v, r); }
BOOST_CNV_TO_STRING (ullint_type v, optional<string_type>& r) const { to_str_(v, r); }
BOOST_CNV_TO_STRING ( sint_type v, optional<string_type>& r) const { to_str_(v, r); }
BOOST_CNV_TO_STRING ( usint_type v, optional<string_type>& r) const { to_str_(v, r); }
BOOST_CNV_TO_STRING ( flt_type v, optional<string_type>& r) const { to_str_(v, r); }
BOOST_CNV_TO_STRING ( dbl_type v, optional<string_type>& r) const { to_str_(v, r); }
BOOST_CNV_TO_STRING ( ldbl_type v, optional<string_type>& r) const { to_str_(v, r); }
// String to basic type
BOOST_CNV_STRING_TO (string_type const& s, optional< int_type>& r) const { str_to_(s, r); }
BOOST_CNV_STRING_TO (string_type const& s, optional< uint_type>& r) const { str_to_(s, r); }
BOOST_CNV_STRING_TO (string_type const& s, optional< lint_type>& r) const { str_to_(s, r); }
BOOST_CNV_STRING_TO (string_type const& s, optional< llint_type>& r) const { str_to_(s, r); }
BOOST_CNV_STRING_TO (string_type const& s, optional< ulint_type>& r) const { str_to_(s, r); }
BOOST_CNV_STRING_TO (string_type const& s, optional<ullint_type>& r) const { str_to_(s, r); }
BOOST_CNV_STRING_TO (string_type const& s, optional< sint_type>& r) const { str_to_(s, r); }
BOOST_CNV_STRING_TO (string_type const& s, optional< usint_type>& r) const { str_to_(s, r); }
BOOST_CNV_STRING_TO (string_type const& s, optional< flt_type>& r) const { str_to_(s, r); }
BOOST_CNV_STRING_TO (string_type const& s, optional< dbl_type>& r) const { str_to_(s, r); }
BOOST_CNV_STRING_TO (string_type const& s, optional< ldbl_type>& r) const { str_to_(s, r); }
// Formatters
// BOOST_CNV_PARAM (locale, std::locale const) { locale_ = arg[ARG:: locale]; return dncast(); }
BOOST_CNV_PARAM (base, base::type const) { base_ = arg[ARG:: base]; return dncast(); }
BOOST_CNV_PARAM (adjust, adjust::type const) { adjust_ = arg[ARG:: adjust]; return dncast(); }
BOOST_CNV_PARAM (precision, int const) { precision_ = arg[ARG::precision]; return dncast(); }
BOOST_CNV_PARAM (precision, int) { precision_ = arg[ARG::precision]; return dncast(); }
BOOST_CNV_PARAM (uppercase, bool const) { uppercase_ = arg[ARG::uppercase]; return dncast(); }
BOOST_CNV_PARAM (skipws, bool const) { skipws_ = arg[ARG:: skipws]; return dncast(); }
BOOST_CNV_PARAM (width, int const) { width_ = arg[ARG:: width]; return dncast(); }
BOOST_CNV_PARAM (fill, char const) { fill_ = arg[ARG:: fill]; return dncast(); }
protected:
cnvbase()
:
base_ (10),
skipws_ (false),
precision_ (0),
uppercase_ (false),
width_ (0),
fill_ (' '),
adjust_ (boost::cnv::adjust::right)
{}
template<typename string_type, typename out_type>
void
str_to_(string_type const& str, optional<out_type>& result_out) const
{
cnv::range<string_type const> range (str);
if (skipws_)
for (; !range.empty() && std::isspace(*range.begin()); ++range);
if (range.empty()) return;
if (std::isspace(*range.begin())) return;
dncast().str_to(range, result_out);
}
template<typename in_type, typename string_type>
void
to_str_(in_type value_in, optional<string_type>& result_out) const
{
typedef typename cnv::range<string_type>::value_type char_type;
char_type buf[bufsize_];
cnv::range<char_type*> range = dncast().to_str(value_in, buf);
char_type* beg = range.begin();
char_type* end = range.end();
if (beg < end)
{
format_(buf, beg, end);
result_out = string_type(beg, end);
}
}
template<typename char_type>
void
format_(char_type* buf, char_type*& beg, char_type*& end) const
{
if (uppercase_)
{
for (char_type* p = beg; p < end; ++p) *p = std::toupper(*p);
}
if (width_)
{
int const num_fillers = (std::max)(0, int(width_ - (end - beg)));
int const num_left = adjust_ == boost::cnv::adjust::left ? 0
: adjust_ == boost::cnv::adjust::right ? num_fillers
: (num_fillers / 2);
int const num_right = num_fillers - num_left;
int const str_size = end - beg;
bool const move = (beg < buf + num_left) // No room for left fillers
|| (buf + bufsize_ < end + num_right); // No room for right fillers
if (move)
{
std::memmove(buf + num_left, beg, str_size * sizeof(char_type));
beg = buf + num_left;
end = beg + str_size;
}
for (int k = 0; k < num_left; *(--beg) = fill_, ++k);
for (int k = 0; k < num_right; *(end++) = fill_, ++k);
}
}
derived_type const& dncast () const { return *static_cast<derived_type const*>(this); }
derived_type& dncast () { return *static_cast<derived_type*>(this); }
// ULONG_MAX(8 bytes) = 18446744073709551615 (20(10) or 32(2) characters)
// double (8 bytes) max is 316 chars
static int const bufsize_ = 1024;
int base_;
bool skipws_;
int precision_;
bool uppercase_;
int width_;
int fill_;
adjust::type adjust_;
// std::locale locale_;
};
#undef BOOST_CNV_TO_STRING
#undef BOOST_CNV_STRING_TO
#undef BOOST_CNV_PARAM
#endif // BOOST_CONVERT_CONVERTER_BASE_HPP
|
