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
|
// file : libbuild2/functions-string.cxx -*- C++ -*-
// license : MIT; see accompanying LICENSE file
#include <libbuild2/function.hxx>
#include <libbuild2/variable.hxx>
using namespace std;
namespace build2
{
void
string_functions (function_map& m)
{
function_family f (m, "string");
f["string"] += [](string s) {return s;};
// @@ Shouldn't it concatenate elements into the single string?
// @@ Doesn't seem to be used so far. Can consider removing.
//
// f["string"] += [](strings v) {return v;};
// Compare ASCII strings ignoring case and returning the boolean value.
//
f["icasecmp"] += [](string x, string y)
{
return icasecmp (x, y) == 0;
};
f["icasecmp"] += [](string x, names y)
{
return icasecmp (x, convert<string> (move (y))) == 0;
};
f["icasecmp"] += [](names x, string y)
{
return icasecmp (convert<string> (move (x)), y) == 0;
};
f[".icasecmp"] += [](names x, names y)
{
return icasecmp (convert<string> (move (x)),
convert<string> (move (y))) == 0;
};
// Trim.
//
f["trim"] += [](string s)
{
return trim (move (s));
};
f[".trim"] += [](names s)
{
return names {name (trim (convert<string> (move (s))))};
};
// Convert ASCII strings into lower/upper case.
//
f["lcase"] += [](string s)
{
return lcase (move (s));
};
f[".lcase"] += [](names s)
{
return names {name (lcase (convert<string> (move (s))))};
};
f["ucase"] += [](string s)
{
return ucase (move (s));
};
f[".ucase"] += [](names s)
{
return names {name (ucase (convert<string> (move (s))))};
};
// $size(<strings>)
//
// Return the number of elements in the sequence.
//
f["size"] += [] (strings v) {return v.size ();};
// $sort(<strings> [, <flags>])
//
// Sort strings in ascending order.
//
// The following flags are supported:
//
// icase - sort ignoring case
//
// dedup - in addition to sorting also remove duplicates
//
f["sort"] += [](strings v, optional<names> fs)
{
bool ic (false);
bool dd (false);
if (fs)
{
for (name& f: *fs)
{
string s (convert<string> (move (f)));
if (s == "icase")
ic = true;
else if (s == "dedup")
dd = true;
else
throw invalid_argument ("invalid flag '" + s + "'");
}
}
sort (v.begin (), v.end (),
[ic] (const string& x, const string& y)
{
return (ic ? icasecmp (x, y) : x.compare (y)) < 0;
});
if (dd)
v.erase (unique (v.begin(), v.end(),
[ic] (const string& x, const string& y)
{
return (ic ? icasecmp (x, y) : x.compare (y)) == 0;
}),
v.end ());
return v;
};
// String-specific overloads from builtins.
//
function_family b (m, "builtin");
b[".concat"] += [](string l, string r) {l += r; return l;};
b[".concat"] += [](string l, names ur)
{
l += convert<string> (move (ur));
return l;
};
b[".concat"] += [](names ul, string r)
{
string l (convert<string> (move (ul)));
l += r;
return l;
};
}
}
|
