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1 | /* boost random/vector_io.hpp header file |
2 | * | |
3 | * Copyright Steven Watanabe 2011 | |
4 | * Distributed under the Boost Software License, Version 1.0. (See | |
5 | * accompanying file LICENSE_1_0.txt or copy at | |
6 | * http://www.boost.org/LICENSE_1_0.txt) | |
7 | * | |
8 | * See http://www.boost.org for most recent version including documentation. | |
9 | * | |
10 | * $Id$ | |
11 | */ | |
12 | ||
13 | #ifndef BOOST_RANDOM_DETAIL_VECTOR_IO_HPP | |
14 | #define BOOST_RANDOM_DETAIL_VECTOR_IO_HPP | |
15 | ||
16 | #include <vector> | |
17 | #include <iosfwd> | |
18 | #include <istream> | |
11fdf7f2 | 19 | #include <boost/io/ios_state.hpp> |
7c673cae FG |
20 | |
21 | namespace boost { | |
22 | namespace random { | |
23 | namespace detail { | |
24 | ||
25 | template<class CharT, class Traits, class T> | |
26 | void print_vector(std::basic_ostream<CharT, Traits>& os, | |
27 | const std::vector<T>& vec) | |
28 | { | |
29 | typename std::vector<T>::const_iterator | |
30 | iter = vec.begin(), | |
31 | end = vec.end(); | |
32 | os << os.widen('['); | |
33 | if(iter != end) { | |
34 | os << *iter; | |
35 | ++iter; | |
36 | for(; iter != end; ++iter) | |
37 | { | |
38 | os << os.widen(' ') << *iter; | |
39 | } | |
40 | } | |
41 | os << os.widen(']'); | |
42 | } | |
43 | ||
44 | template<class CharT, class Traits, class T> | |
45 | void read_vector(std::basic_istream<CharT, Traits>& is, std::vector<T>& vec) | |
46 | { | |
47 | CharT ch; | |
48 | if(!(is >> ch)) { | |
49 | return; | |
50 | } | |
51 | if(ch != is.widen('[')) { | |
52 | is.putback(ch); | |
53 | is.setstate(std::ios_base::failbit); | |
54 | return; | |
55 | } | |
11fdf7f2 | 56 | boost::io::basic_ios_exception_saver<CharT, Traits> e(is, std::ios_base::goodbit); |
7c673cae FG |
57 | T val; |
58 | while(is >> std::ws >> val) { | |
59 | vec.push_back(val); | |
60 | } | |
61 | if(is.fail()) { | |
62 | is.clear(); | |
11fdf7f2 | 63 | e.restore(); |
7c673cae FG |
64 | if(!(is >> ch)) { |
65 | return; | |
66 | } | |
67 | if(ch != is.widen(']')) { | |
68 | is.putback(ch); | |
69 | is.setstate(std::ios_base::failbit); | |
70 | } | |
71 | } | |
72 | } | |
73 | ||
74 | } | |
75 | } | |
76 | } | |
77 | ||
78 | #endif // BOOST_RANDOM_DETAIL_VECTOR_IO_HPP |