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 : butl/tab-parser.cxx -*- C++ -*-
// copyright : Copyright (c) 2014-2017 Code Synthesis Ltd
// license : MIT; see accompanying LICENSE file
#include <butl/tab-parser>
#include <cassert>
#include <sstream>
#include <butl/string-parser>
using namespace std;
namespace butl
{
using parsing = tab_parsing;
// tab_parser
//
tab_fields tab_parser::
next ()
{
tab_fields r;
// Read lines until a non-empty one or EOF is encountered. In the first
// case parse the line and bail out.
//
// Note that we check for character presence in the stream prior to the
// getline() call, to prevent it from setting the failbit.
//
while (!is_.eof () && is_.peek () != istream::traits_type::eof ())
{
string s;
getline (is_, s);
++line_;
// Skip empty line.
//
auto i (s.begin ());
auto e (s.end ());
for (; i != e && (*i == ' ' || *i == '\t'); ++i) ; // Skip spaces.
if (i == e || *i == '#')
continue;
r.line = line_;
r.end_column = s.size () + 1; // Newline position.
vector<std::pair<string, size_t>> sp;
try
{
sp = string_parser::parse_quoted_position (s, false);
}
catch (const invalid_string& e)
{
throw parsing (name_, line_, e.position + 1, e.what ());
}
for (auto& s: sp)
r.emplace_back (tab_field ({move (s.first), s.second + 1}));
break;
}
return r;
}
// tab_parsing
//
static string
format (const string& n, uint64_t l, uint64_t c, const string& d)
{
ostringstream os;
if (!n.empty ())
os << n << ':';
os << l << ':' << c << ": error: " << d;
return os.str ();
}
tab_parsing::
tab_parsing (const string& n, uint64_t l, uint64_t c, const string& d)
: runtime_error (format (n, l, c, d)),
name (n), line (l), column (c), description (d)
{
}
}
|
