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
|
// file : build/path-map -*- C++ -*-
// copyright : Copyright (c) 2014-2015 Code Synthesis Ltd
// license : MIT; see accompanying LICENSE file
#ifndef BUILD_PATH_MAP
#define BUILD_PATH_MAP
#include <butl/prefix-map>
#include <build/path>
namespace butl
{
// @@ Remove butl:: when move to libbutl.
// prefix_map for paths
//
// The paths should be normalized.
//
// Note that the path's representation of POSIX root ('/') is
// inconsistent in that we have a trailing delimiter at the end of
// the path (its "proper" representation would have been an empty
// string but that would have clashed with empty paths). To work
// around this snag, this implementation, during key comparison,
// detects '/' and treats it as empty. Note that the map will
// still store the key as you have first inserted it. So if you
// want a particular representation, pre-populate the map with
// it.
//
template <typename C, typename K>
struct compare_prefix<build::basic_path<C, K>>: compare_prefix<std::basic_string<C>>
{
typedef build::basic_path<C, K> key_type;
typedef C delimiter_type;
typedef std::basic_string<C> string_type;
typedef compare_prefix<std::basic_string<C>> base;
explicit
compare_prefix (delimiter_type d): base (d) {}
bool
operator() (const key_type& x, const key_type& y) const
{
const auto& xs (x.string ());
const auto& ys (y.string ());
#ifdef _WIN32
return base::compare (xs.c_str (),
xs.size (),
ys.c_str (),
ys.size ()) < 0;
#else
return base::compare (xs.c_str (),
x.root () ? 0 : xs.size (),
ys.c_str (),
y.root () ? 0 : ys.size ()) < 0;
#endif
}
bool
prefix (const key_type& p, const key_type& k) const
{
const auto& ps (p.string ());
const auto& ks (k.string ());
#ifdef _WIN32
return base::prefix (ps, ks);
#else
return base::prefix (p.root () ? string_type () : ps,
k.root () ? string_type () : ks);
#endif
}
};
}
namespace build
{
template <typename T>
using path_map = butl::prefix_map<path, T, path::traits::directory_separator>;
template <typename T>
using dir_path_map =
butl::prefix_map<dir_path, T, dir_path::traits::directory_separator>;
}
#endif // BUILD_PATH_MAP
|
