argagg
csv.hpp
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1 /*
2  * @file
3  * @brief
4  * Defines the argagg::csv type and an argument conversion specialization that
5  * parses an argument as an argagg::csv.
6  *
7  * @copyright
8  * Copyright (c) 2018 Viet The Nguyen
9  *
10  * @copyright
11  * Permission is hereby granted, free of charge, to any person obtaining a copy
12  * of this software and associated documentation files (the "Software"), to
13  * deal in the Software without restriction, including without limitation the
14  * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
15  * sell copies of the Software, and to permit persons to whom the Software is
16  * furnished to do so, subject to the following conditions:
17  *
18  * @copyright
19  * The above copyright notice and this permission notice shall be included in
20  * all copies or substantial portions of the Software.
21  *
22  * @copyright
23  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
24  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
25  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
26  * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
27  * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
28  * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
29  * IN THE SOFTWARE.
30  */
31 #pragma once
32 #ifndef ARGAGG_ARGAGG_CONVERT_CSV_HPP
33 #define ARGAGG_ARGAGG_CONVERT_CSV_HPP
34 
35 #include "../argagg.hpp"
36 
37 #include <vector>
38 
39 
40 namespace argagg {
41 
48 template <typename T>
49 struct csv {
51 };
52 
53 namespace convert {
54 
60  template <typename T>
61  struct converter<csv<T>> {
62  static csv<T> convert(const char* s);
63  };
64 
65 } // namespace convert
66 
67 } // namespace argagg
68 
69 
70 // ---- end of declarations, header-only implementations follow ----
71 
72 
73 namespace argagg {
74 namespace convert {
75 
76 
77 template <typename T>
78 csv<T>
79 converter<csv<T>>::convert(const char* s)
80 {
81  csv<T> result {{}};
82  T value;
83  while (parse_next_component(s, value, ',')) {
84  result.values.emplace_back(std::move(value));
85  }
86  result.values.emplace_back(std::move(value));
87  return result;
88 }
89 
90 
91 } // namespace convert
92 } // namespace argagg
93 
94 
95 #endif // ARGAGG_ARGAGG_CONVERT_CSV_HPP
T move(T... args)
bool parse_next_component(const char *&s, T &out_arg, const char delim=',')
A utility function for parsing an argument as a delimited list. To use, initialize a const char* poin...
Definition: argagg.hpp:1552
There are only two hard things in Computer Science: cache invalidation and naming things (Phil Karlto...
Definition: argagg.hpp:96
For simple types the main extension point for adding argument conversions is argagg::convert::arg<T>(...
Definition: argagg.hpp:186
static T convert(const char *arg)
Represents a list of comma-separated values. This is defined as a new type to embed the delimiter sem...
Definition: csv.hpp:49
std::vector< T > values
Definition: csv.hpp:50