summaryrefslogtreecommitdiff
path: root/libxsd/xsd/cxx/ro-string.hxx
blob: 2db7aa65220805882ea0e2c2eaf389447ee6d356 (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
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
// file      : xsd/cxx/ro-string.hxx
// copyright : Copyright (c) 2005-2017 Code Synthesis Tools CC
// license   : GNU GPL v2 + exceptions; see accompanying LICENSE file

#ifndef XSD_CXX_RO_STRING_HXX
#define XSD_CXX_RO_STRING_HXX

#include <string>
#include <cstddef> // std::size_t
#include <ostream>

namespace xsd
{
  namespace cxx
  {
    // Read-only string class template.
    //
    template <typename C>
    class ro_string
    {
    public:
      typedef std::char_traits<C> traits_type;
      typedef std::size_t	    size_type;

      static const size_type npos = ~(size_type (0));

    public:
      ro_string ()
          : data_ (0), size_ (0)
      {
      }

      ro_string (const C* s)
          : data_ (s), size_ (traits_type::length (s))
      {
      }

      ro_string (const C* s, size_type size)
          : data_ (s), size_ (size)
      {
      }

      ro_string (const std::basic_string<C>& s)
          : data_ (s.data ()), size_ (s.size ())
      {
      }

      operator std::basic_string<C> () const
      {
        return std::basic_string<C> (data (), size ());
      }

    private:
      ro_string (const ro_string&);

      ro_string&
      operator= (const ro_string&);

    public:
      // The returned string is not necessarily terminated  with '\0'.
      // If size() returns 0, the returned pointer may be 0.
      //
      const C*
      data () const
      {
        return data_;
      }

      size_type
      size () const
      {
        return size_;
      }

      size_type
      length () const
      {
        return size ();
      }

    public:
      bool
      empty () const
      {
        return size () == 0;
      }

      const C&
      operator[] (size_type pos) const
      {
        return data ()[pos];
      }

    public:
      void
      assign (const C* s)
      {
        data_ = s;
        size_ = traits_type::length (s);
      }

      void
      assign (const C* s, size_type size)
      {
        data_ = s;
        size_ = size;
      }

      void
      assign (const std::basic_string<C>& s)
      {
        data_ = s.c_str ();
        size_ = s.size ();
      }

    public:
      int
      compare (const ro_string& str) const
      {
        return compare (str.data (), str.size ());
      }

      int
      compare (const std::basic_string<C>& str) const
      {
        return compare (str.c_str (), str.size ());
      }

      int
      compare (const C* str) const
      {
        return compare (str, traits_type::length (str));
      }

      int
      compare (const C* str, size_type n) const
      {
        size_type s1 (size ());
        size_type s (s1 < n ? s1 : n);

        int r (s != 0 ? traits_type::compare (data (), str, s) : 0);

        if (!r && s1 != n)
          r = s1 < n ? -1 : 1;

        return r;
      }

    public:
      size_type
      find (C c, size_type pos = 0) const;

    private:
      const C* data_;
      size_type size_;
    };

    // operator==
    //
    template <typename C>
    inline bool
    operator== (const ro_string<C>& a, const ro_string<C>& b)
    {
      return a.compare (b) == 0;
    }

    template <typename C>
    inline bool
    operator== (const ro_string<C>& a, const std::basic_string<C>& b)
    {
      return a.compare (b) == 0;
    }

    template <typename C>
    inline bool
    operator== (const std::basic_string<C>& a, const ro_string<C>& b)
    {
      return b.compare (a) == 0;
    }

    template <typename C>
    inline bool
    operator== (const ro_string<C>& a, const C* b)
    {
      return a.compare (b) == 0;
    }

    template <typename C>
    inline bool
    operator== (const C* a, const ro_string<C>& b)
    {
      return b.compare (a) == 0;
    }

    // operator!=
    //
    template <typename C>
    inline bool
    operator!= (const ro_string<C>& a, const ro_string<C>& b)
    {
      return a.compare (b) != 0;
    }

    template <typename C>
    inline bool
    operator!= (const ro_string<C>& a, const std::basic_string<C>& b)
    {
      return a.compare (b) != 0;
    }

    template <typename C>
    inline bool
    operator!= (const std::basic_string<C>& a, const ro_string<C>& b)
    {
      return b.compare (a) != 0;
    }

    template <typename C>
    inline bool
    operator!= (const ro_string<C>& a, const C* b)
    {
      return a.compare (b) != 0;
    }

    template <typename C>
    inline bool
    operator!= (const C* a, const ro_string<C>& b)
    {
      return b.compare (a) != 0;
    }

    // operator<
    //
    template <typename C>
    inline bool
    operator< (const ro_string<C>& l, const ro_string<C>& r)
    {
      return l.compare (r) < 0;
    }

    template <typename C>
    inline bool
    operator< (const ro_string<C>& l, const std::basic_string<C>& r)
    {
      return l.compare (r) < 0;
    }

    template <typename C>
    inline bool
    operator< (const std::basic_string<C>& l, const ro_string<C>& r)
    {
      return r.compare (l) > 0;
    }

    template <typename C>
    inline bool
    operator< (const ro_string<C>& l, const C* r)
    {
      return l.compare (r) < 0;
    }

    template <typename C>
    inline bool
    operator< (const C* l, const ro_string<C>& r)
    {
      return r.compare (l) > 0;
    }


    // operator>
    //
    template <typename C>
    inline bool
    operator> (const ro_string<C>& l, const ro_string<C>& r)
    {
      return l.compare (r) > 0;
    }

    template <typename C>
    inline bool
    operator> (const ro_string<C>& l, const std::basic_string<C>& r)
    {
      return l.compare (r) > 0;
    }

    template <typename C>
    inline bool
    operator> (const std::basic_string<C>& l, const ro_string<C>& r)
    {
      return r.compare (l) < 0;
    }

    template <typename C>
    inline bool
    operator> (const ro_string<C>& l, const C* r)
    {
      return l.compare (r) > 0;
    }

    template <typename C>
    inline bool
    operator> (const C* l, const ro_string<C>& r)
    {
      return r.compare (l) < 0;
    }

    // operator<=
    //
    template <typename C>
    inline bool
    operator<= (const ro_string<C>& l, const ro_string<C>& r)
    {
      return l.compare (r) <= 0;
    }

    template <typename C>
    inline bool
    operator<= (const ro_string<C>& l, const std::basic_string<C>& r)
    {
      return l.compare (r) <= 0;
    }

    template <typename C>
    inline bool
    operator<= (const std::basic_string<C>& l, const ro_string<C>& r)
    {
      return r.compare (l) >= 0;
    }

    template <typename C>
    inline bool
    operator<= (const ro_string<C>& l, const C* r)
    {
      return l.compare (r) <= 0;
    }

    template <typename C>
    inline bool
    operator<= (const C* l, const ro_string<C>& r)
    {
      return r.compare (l) >= 0;
    }


    // operator>=
    //
    template <typename C>
    inline bool
    operator>= (const ro_string<C>& l, const ro_string<C>& r)
    {
      return l.compare (r) >= 0;
    }

    template <typename C>
    inline bool
    operator>= (const ro_string<C>& l, const std::basic_string<C>& r)
    {
      return l.compare (r) >= 0;
    }

    template <typename C>
    inline bool
    operator>= (const std::basic_string<C>& l, const ro_string<C>& r)
    {
      return r.compare (l) <= 0;
    }

    template <typename C>
    inline bool
    operator>= (const ro_string<C>& l, const C* r)
    {
      return l.compare (r) >= 0;
    }

    template <typename C>
    inline bool
    operator>= (const C* l, const ro_string<C>& r)
    {
      return r.compare (l) <= 0;
    }

    // operator<<
    //
    template<typename C>
    std::basic_ostream<C>&
    operator<< (std::basic_ostream<C>& os, const ro_string<C>& str)
    {
      if (str.size () != 0)
        os.write (str.data (), static_cast<std::streamsize> (str.size ()));

      return os;
    }

    // operator+=
    //
    template<typename C>
    std::basic_string<C>&
    operator+= (std::basic_string<C>& l, const ro_string<C>& r)
    {
      l.append (r.data (), r.size ());
      return l;
    }

    // Trim leading and trailing XML whitespaces. Return the new
    // string size.
    //
    template <typename C>
    typename ro_string<C>::size_type
    trim_left (ro_string<C>&);

    template <typename C>
    typename ro_string<C>::size_type
    trim_right (ro_string<C>&);

    template <typename C>
    typename ro_string<C>::size_type
    trim (ro_string<C>&);

    // Trim leading and trailing XML whitespaces.
    //
    template<typename C>
    std::basic_string<C>
    trim (const std::basic_string<C>&);
  }
}

#include <xsd/cxx/ro-string.txx>

#endif  // XSD_CXX_RO_STRING_HXX