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1 | // Copyright (C) 2009, 2010 by Thomas Moulard, CNRS. | ||
2 | // | ||
3 | |||
4 | // Redistribution and use in source and binary forms, with or without | ||
5 | // modification, are permitted provided that the following conditions are | ||
6 | // met: | ||
7 | // | ||
8 | // 1. Redistributions of source code must retain the above copyright | ||
9 | // notice, this list of conditions and the following disclaimer. | ||
10 | // | ||
11 | // 2. Redistributions in binary form must reproduce the above copyright | ||
12 | // notice, this list of conditions and the following disclaimer in the | ||
13 | // documentation and/or other materials provided with the distribution. | ||
14 | // | ||
15 | // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS | ||
16 | // "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT | ||
17 | // LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR | ||
18 | // A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT | ||
19 | // HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, | ||
20 | // SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT | ||
21 | // LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, | ||
22 | // DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY | ||
23 | // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT | ||
24 | // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE | ||
25 | // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH | ||
26 | // DAMAGE. | ||
27 | |||
28 | #include "hpp/util/indent.hh" | ||
29 | |||
30 | #include <cassert> | ||
31 | #include <iomanip> | ||
32 | #include <ostream> | ||
33 | |||
34 | namespace hpp { | ||
35 | 789 | inline long& indent(std::ostream& o) { | |
36 | // The slot to store the current indentation level. | ||
37 |
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789 | static const int indent_index = std::ios::xalloc(); |
38 | 789 | return o.iword(indent_index); | |
39 | } | ||
40 | |||
41 | 222 | std::ostream& incindent(std::ostream& o) { | |
42 | 222 | indent(o) += 2; | |
43 | 222 | return o; | |
44 | } | ||
45 | |||
46 | 222 | std::ostream& decindent(std::ostream& o) { | |
47 | 222 | long& ind = indent(o); | |
48 |
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222 | if (ind >= 2) |
49 | 222 | indent(o) -= 2; | |
50 | else | ||
51 | ✗ | ind = 0; | |
52 | 222 | return o; | |
53 | } | ||
54 | |||
55 | ✗ | std::ostream& resetindent(std::ostream& o) { | |
56 | ✗ | indent(o) = 0; | |
57 | ✗ | return o; | |
58 | } | ||
59 | |||
60 | 123 | std::ostream& iendl(std::ostream& o) { | |
61 | 123 | o << std::endl; | |
62 | // Be sure to be able to restore the stream flags. | ||
63 | 123 | char fill = o.fill(' '); | |
64 | 123 | return o << std::setw((int)indent(o)) << "" << std::setfill(fill); | |
65 | } | ||
66 | |||
67 | ✗ | std::ostream& incendl(std::ostream& o) { return o << incindent << iendl; } | |
68 | |||
69 | ✗ | std::ostream& decendl(std::ostream& o) { return o << decindent << iendl; } | |
70 | |||
71 | } // end of namespace hpp. | ||
72 |