aboutsummaryrefslogtreecommitdiff
path: root/mod/types-parsers.cxx
blob: 3868c32e4a90ab413c9ced22f231cd8bc467f707 (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
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
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
// file      : mod/types-parsers.cxx -*- C++ -*-
// license   : MIT; see accompanying LICENSE file

#include <mod/types-parsers.hxx>

#include <sstream>

#include <libbutl/regex.hxx>
#include <libbutl/timestamp.hxx> // from_string()

#include <mod/module-options.hxx>

using namespace std;
using namespace butl;
using namespace bpkg;
using namespace web::xhtml;

namespace brep
{
  namespace cli
  {
    // Parse path.
    //
    template <typename T>
    static void
    parse_path (T& x, scanner& s)
    {
      const char* o (s.next ());

      if (!s.more ())
        throw missing_value (o);

      const char* v (s.next ());

      try
      {
        x = T (v);
      }
      catch (const invalid_path&)
      {
        throw invalid_value (o, v);
      }
    }

    void parser<path>::
    parse (path& x, bool& xs, scanner& s)
    {
      xs = true;
      parse_path (x, s);
    }

    void parser<dir_path>::
    parse (dir_path& x, bool& xs, scanner& s)
    {
      xs = true;
      parse_path (x, s);
    }

    // Parse time of day.
    //
    void parser<duration>::
    parse (duration& x, bool& xs, scanner& s)
    {
      xs = true;

      const char* o (s.next ());

      if (!s.more ())
        throw missing_value (o);

      const char* v (s.next ());

      // To avoid the manual time of day parsing and validation, let's parse
      // it as the first Epoch day time and convert the result (timestamp) to
      // the time elapsed since Epoch (duration).
      //
      try
      {
        string t ("1970-01-01 ");
        t += v;

        x = from_string (t.c_str (),
                         "%Y-%m-%d %H:%M",
                         false /* local */).time_since_epoch ();
        return;
      }
      catch (const invalid_argument&) {}
      catch (const system_error&) {}

      throw invalid_value (o, v);
    }

    // Parse repository_location.
    //
    void parser<repository_location>::
    parse (repository_location& x, bool& xs, scanner& s)
    {
      xs = true;

      const char* o (s.next ());

      if (!s.more ())
        throw missing_value (o);

      const char* v (s.next ());

      try
      {
        x = repository_location (v);
      }
      catch (const invalid_argument&)
      {
        throw invalid_value (o, v);
      }
    }

    // Parse page_form.
    //
    void parser<page_form>::
    parse (page_form& x, bool& xs, scanner& s)
    {
      xs = true;
      const char* o (s.next ());

      if (!s.more ())
        throw missing_value (o);

      const string v (s.next ());
      if (v == "full")
        x = page_form::full;
      else if (v == "brief")
        x = page_form::brief;
      else
        throw invalid_value (o, v);
    }

    // Parse page_menu.
    //
    void parser<page_menu>::
    parse (page_menu& x, bool& xs, scanner& s)
    {
      xs = true;
      const char* o (s.next ());

      if (!s.more ())
        throw missing_value (o);

      const string v (s.next ());

      auto p (v.find ('='));
      if (p != string::npos)
      {
        string label (v, 0, p);
        string link (v, p + 1);

        if (!label.empty ())
        {
          x = page_menu (move (label), move (link));
          return;
        }
      }

      throw invalid_value (o, v);
    }

    // Parse web::xhtml::fragment.
    //
    void parser<fragment>::
    parse (fragment& x, bool& xs, scanner& s)
    {
      xs = true;
      const char* o (s.next ());

      if (!s.more ())
        throw missing_value (o);

      const char* v (s.next ());

      try
      {
        x = fragment (v, o);
      }
      catch (const xml::parsing&)
      {
        throw invalid_value (o, v);
      }
    }

    // Parse the '/regex/replacement/' string into the regex/replacement pair.
    //
    void parser<pair<std::regex, string>>::
    parse (pair<std::regex, string>& x, bool& xs, scanner& s)
    {
      xs = true;
      const char* o (s.next ());

      if (!s.more ())
        throw missing_value (o);

      const char* v (s.next ());

      try
      {
        x = regex_replace_parse (v);
      }
      catch (const invalid_argument& e)
      {
        throw invalid_value (o, v, e.what ());
      }
      catch (const regex_error& e)
      {
        // Sanitize the description.
        //
        ostringstream os;
        os << e;

        throw invalid_value (o, v, os.str ());
      }
    }
  }
}