blob: a25b007fb92a6bcdd4d31e03697e665498595bfb (
plain)
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
|
// file : bbot/variable.cxx -*- C++ -*-
// copyright : Copyright (c) 2014-2017 Code Synthesis Ltd
// license : MIT; see accompanying LICENSE file
#include <bbot/variable>
#include <utility> // move()
using namespace std;
namespace bbot
{
variable::
variable (string v): string (move (v))
{
// Scan the string untill the end to check that the quoting is terminated.
// We will also make sure that the name doesn't contain spaces and the
// value is provided.
//
char quoting ('\0'); // Current quoting mode, can be used as bool.
bool name (true); // True while we are parsing the variable name.
auto b (cbegin ());
auto i (b);
auto bad_variable = [&b, &i] (const string& d)
{
throw invalid_variable (i - b, d);
};
for (auto e (cend ()); i != e; ++i)
{
char c (*i);
if (!quoting)
{
if (c == '"' || c == '\'') // Begin of quoted string,
{
quoting = c;
continue;
}
}
else if (c == quoting) // End of quoted string,
{
quoting = '\0';
continue;
}
if (name)
{
if (c == ' ' || c == '\t')
bad_variable ("expected variable assignment");
else if (c == '=')
name = false;
}
}
if (quoting)
bad_variable ("unterminated quoted string");
if (name)
bad_variable ("no variable value");
}
string variable::
unquoted () const
{
string r;
char quoting ('\0'); // Current quoting mode, can be used as bool.
for (auto i (cbegin ()), e (cend ()); i != e; ++i)
{
char c (*i);
if (!quoting)
{
if (c == '"' || c == '\'') // Begin of quoted string.
{
quoting = c;
continue;
}
}
else if (c == quoting) // End of quoted string.
{
quoting = '\0';
continue;
}
r += c;
}
return r;
}
}
|
