aboutsummaryrefslogtreecommitdiff
path: root/build2/options
blob: 596980e6c4920e0746a1a8dfa75a11511af360d4 (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
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
// -*- C++ -*-
//
// This file was generated by CLI, a command line interface
// compiler for C++.
//

#ifndef BUILD2_OPTIONS
#define BUILD2_OPTIONS

// Begin prologue.
//
//
// End prologue.

#include <iosfwd>
#include <string>
#include <cstddef>
#include <exception>

#ifndef CLI_POTENTIALLY_UNUSED
#  if defined(_MSC_VER) || defined(__xlC__)
#    define CLI_POTENTIALLY_UNUSED(x) (void*)&x
#  else
#    define CLI_POTENTIALLY_UNUSED(x) (void)x
#  endif
#endif

namespace cl
{
  class usage_para
  {
    public:
    enum value
    {
      none,
      text,
      option
    };

    usage_para (value);

    operator value () const 
    {
      return v_;
    }

    private:
    value v_;
  };

  class unknown_mode
  {
    public:
    enum value
    {
      skip,
      stop,
      fail
    };

    unknown_mode (value);

    operator value () const 
    {
      return v_;
    }

    private:
    value v_;
  };

  // Exceptions.
  //

  class exception: public std::exception
  {
    public:
    virtual void
    print (::std::ostream&) const = 0;
  };

  ::std::ostream&
  operator<< (::std::ostream&, const exception&);

  class unknown_option: public exception
  {
    public:
    virtual
    ~unknown_option () throw ();

    unknown_option (const std::string& option);

    const std::string&
    option () const;

    virtual void
    print (::std::ostream&) const;

    virtual const char*
    what () const throw ();

    private:
    std::string option_;
  };

  class unknown_argument: public exception
  {
    public:
    virtual
    ~unknown_argument () throw ();

    unknown_argument (const std::string& argument);

    const std::string&
    argument () const;

    virtual void
    print (::std::ostream&) const;

    virtual const char*
    what () const throw ();

    private:
    std::string argument_;
  };

  class missing_value: public exception
  {
    public:
    virtual
    ~missing_value () throw ();

    missing_value (const std::string& option);

    const std::string&
    option () const;

    virtual void
    print (::std::ostream&) const;

    virtual const char*
    what () const throw ();

    private:
    std::string option_;
  };

  class invalid_value: public exception
  {
    public:
    virtual
    ~invalid_value () throw ();

    invalid_value (const std::string& option,
                   const std::string& value);

    const std::string&
    option () const;

    const std::string&
    value () const;

    virtual void
    print (::std::ostream&) const;

    virtual const char*
    what () const throw ();

    private:
    std::string option_;
    std::string value_;
  };

  class eos_reached: public exception
  {
    public:
    virtual void
    print (::std::ostream&) const;

    virtual const char*
    what () const throw ();
  };

  class scanner
  {
    public:
    virtual
    ~scanner ();

    virtual bool
    more () = 0;

    virtual const char*
    peek () = 0;

    virtual const char*
    next () = 0;

    virtual void
    skip () = 0;
  };

  class argv_scanner: public scanner
  {
    public:
    argv_scanner (int& argc, char** argv, bool erase = false);
    argv_scanner (int start, int& argc, char** argv, bool erase = false);

    int
    end () const;

    virtual bool
    more ();

    virtual const char*
    peek ();

    virtual const char*
    next ();

    virtual void
    skip ();

    private:
    int i_;
    int& argc_;
    char** argv_;
    bool erase_;
  };

  template <typename X>
  struct parser;
}

#include <cstdint>

class options
{
  public:
  options ();

  options (int& argc,
           char** argv,
           bool erase = false,
           ::cl::unknown_mode option = ::cl::unknown_mode::fail,
           ::cl::unknown_mode argument = ::cl::unknown_mode::stop);

  options (int start,
           int& argc,
           char** argv,
           bool erase = false,
           ::cl::unknown_mode option = ::cl::unknown_mode::fail,
           ::cl::unknown_mode argument = ::cl::unknown_mode::stop);

  options (int& argc,
           char** argv,
           int& end,
           bool erase = false,
           ::cl::unknown_mode option = ::cl::unknown_mode::fail,
           ::cl::unknown_mode argument = ::cl::unknown_mode::stop);

  options (int start,
           int& argc,
           char** argv,
           int& end,
           bool erase = false,
           ::cl::unknown_mode option = ::cl::unknown_mode::fail,
           ::cl::unknown_mode argument = ::cl::unknown_mode::stop);

  options (::cl::scanner&,
           ::cl::unknown_mode option = ::cl::unknown_mode::fail,
           ::cl::unknown_mode argument = ::cl::unknown_mode::stop);

  // Option accessors.
  //
  const bool&
  help () const;

  const bool&
  version () const;

  const bool&
  v () const;

  const bool&
  q () const;

  const std::uint16_t&
  verbose () const;

  bool
  verbose_specified () const;

  // Print usage information.
  //
  static ::cl::usage_para
  print_usage (::std::ostream&,
               ::cl::usage_para = ::cl::usage_para::none);

  // Implementation details.
  //
  protected:
  bool
  _parse (const char*, ::cl::scanner&);

  private:
  void
  _parse (::cl::scanner&,
          ::cl::unknown_mode option,
          ::cl::unknown_mode argument);

  public:
  bool help_;
  bool version_;
  bool v_;
  bool q_;
  std::uint16_t verbose_;
  bool verbose_specified_;
};

#include <build2/options.ixx>

// Begin epilogue.
//
//
// End epilogue.

#endif // BUILD2_OPTIONS