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
|
/* Defines String::compose(fmt, arg...) for easy, i18n-friendly
* composition of strings.
*
* Version 1.0.
*
* Copyright (c) 2002 Ole Laursen <olau@hardworking.dk>.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public License
* as published by the Free Software Foundation; either version 2.1 of
* the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
* USA.
*/
//
// Basic usage is like
//
// std::cout << String::compose("This is a %1x%2 matrix.", rows, cols);
//
// See http://www.cs.aau.dk/~olau/compose/ or the included README.compose for
// more details.
//
#ifndef STRING_COMPOSE_H
#define STRING_COMPOSE_H
#include <sstream>
#include <string>
#include <list>
#include <map> // for multimap
namespace StringPrivate
{
// the actual composition class - using string::compose is cleaner, so we
// hide it here
class Composition
{
public:
// initialize and prepare format string on the form "text %1 text %2 etc."
explicit Composition(std::string fmt);
Composition &arg(const char * obj);
// supply an replacement argument starting from %1
template <typename T>
Composition &arg(const T &obj);
// compose and return string
std::string str() const;
private:
std::ostringstream os;
int arg_no;
// we store the output as a list - when the output string is requested, the
// list is concatenated to a string; this way we can keep iterators into
// the list instead of into a string where they're possibly invalidated on
// inserting a specification string
typedef std::list<std::string> output_list;
output_list output;
// the initial parse of the format string fills in the specification map
// with positions for each of the various %?s
typedef std::multimap<int, output_list::iterator> specification_map;
specification_map specs;
};
// helper for converting spec string numbers
inline int char_to_int(char c)
{
switch (c) {
case '0': return 0;
case '1': return 1;
case '2': return 2;
case '3': return 3;
case '4': return 4;
case '5': return 5;
case '6': return 6;
case '7': return 7;
case '8': return 8;
case '9': return 9;
default: return -1000;
}
}
inline bool is_number(int n)
{
switch (n) {
case '0':
case '1':
case '2':
case '3':
case '4':
case '5':
case '6':
case '7':
case '8':
case '9':
return true;
default:
return false;
}
}
// implementations of class Composition
template <>
inline Composition &Composition::arg<std::string>(const std::string &obj)
{
for (specification_map::const_iterator i = specs.lower_bound(arg_no),
end = specs.upper_bound(arg_no); i != end; ++i) {
output_list::iterator pos = i->second;
++pos;
output.insert(pos, obj);
}
++arg_no;
return *this;
}
inline Composition &Composition::arg(const char * obj)
{
for (specification_map::const_iterator i = specs.lower_bound(arg_no),
end = specs.upper_bound(arg_no); i != end; ++i) {
output_list::iterator pos = i->second;
++pos;
output.insert(pos, obj);
}
++arg_no;
return *this;
}
template <typename T>
inline Composition &Composition::arg(const T &obj)
{
os << obj;
std::string rep = os.str();
if (!rep.empty()) { // manipulators don't produce output
for (specification_map::const_iterator i = specs.lower_bound(arg_no),
end = specs.upper_bound(arg_no); i != end; ++i) {
output_list::iterator pos = i->second;
++pos;
output.insert(pos, rep);
}
os.str(std::string());
//os.clear();
++arg_no;
}
return *this;
}
inline Composition::Composition(std::string fmt)
: arg_no(1)
{
std::string::size_type b = 0, i = 0;
// fill in output with the strings between the %1 %2 %3 etc. and
// fill in specs with the positions
while (i < fmt.length()) {
if (fmt[i] == '%' && i + 1 < fmt.length()) {
if (fmt[i + 1] == '%') { // catch %%
fmt.replace(i, 2, "%");
++i;
}
else if (is_number(fmt[i + 1])) { // aha! a spec!
// save string
output.push_back(fmt.substr(b, i - b));
int n = 1; // number of digits
int spec_no = 0;
do {
spec_no += char_to_int(fmt[i + n]);
spec_no *= 10;
++n;
} while (i + n < fmt.length() && is_number(fmt[i + n]));
spec_no /= 10;
output_list::iterator pos = output.end();
--pos; // safe since we have just inserted a string>
specs.insert(specification_map::value_type(spec_no, pos));
// jump over spec string
i += n;
b = i;
}
else
++i;
}
else
++i;
}
if (i - b > 0) // add the rest of the string
output.push_back(fmt.substr(b, i - b));
}
inline std::string Composition::str() const
{
// assemble string
std::string str;
for (output_list::const_iterator i = output.begin(), end = output.end();
i != end; ++i)
str += *i;
return str;
}
}
// now for the real thing(s)
namespace String
{
// a series of functions which accept a format string on the form "text %1
// more %2 less %3" and a number of templated parameters and spits out the
// composited string
template <typename T1>
inline std::string compose(const std::string &fmt, const T1 &o1)
{
StringPrivate::Composition c(fmt);
c.arg(o1);
return c.str();
}
template <typename T1, typename T2>
inline std::string compose(const std::string &fmt,
const T1 &o1, const T2 &o2)
{
StringPrivate::Composition c(fmt);
c.arg(o1).arg(o2);
return c.str();
}
template <typename T1, typename T2, typename T3>
inline std::string compose(const std::string &fmt,
const T1 &o1, const T2 &o2, const T3 &o3)
{
StringPrivate::Composition c(fmt);
c.arg(o1).arg(o2).arg(o3);
return c.str();
}
template <typename T1, typename T2, typename T3, typename T4>
inline std::string compose(const std::string &fmt,
const T1 &o1, const T2 &o2, const T3 &o3,
const T4 &o4)
{
StringPrivate::Composition c(fmt);
c.arg(o1).arg(o2).arg(o3).arg(o4);
return c.str();
}
template <typename T1, typename T2, typename T3, typename T4, typename T5>
inline std::string compose(const std::string &fmt,
const T1 &o1, const T2 &o2, const T3 &o3,
const T4 &o4, const T5 &o5)
{
StringPrivate::Composition c(fmt);
c.arg(o1).arg(o2).arg(o3).arg(o4).arg(o5);
return c.str();
}
template <typename T1, typename T2, typename T3, typename T4, typename T5,
typename T6>
inline std::string compose(const std::string &fmt,
const T1 &o1, const T2 &o2, const T3 &o3,
const T4 &o4, const T5 &o5, const T6 &o6)
{
StringPrivate::Composition c(fmt);
c.arg(o1).arg(o2).arg(o3).arg(o4).arg(o5).arg(o6);
return c.str();
}
template <typename T1, typename T2, typename T3, typename T4, typename T5,
typename T6, typename T7>
inline std::string compose(const std::string &fmt,
const T1 &o1, const T2 &o2, const T3 &o3,
const T4 &o4, const T5 &o5, const T6 &o6,
const T7 &o7)
{
StringPrivate::Composition c(fmt);
c.arg(o1).arg(o2).arg(o3).arg(o4).arg(o5).arg(o6).arg(o7);
return c.str();
}
template <typename T1, typename T2, typename T3, typename T4, typename T5,
typename T6, typename T7, typename T8>
inline std::string compose(const std::string &fmt,
const T1 &o1, const T2 &o2, const T3 &o3,
const T4 &o4, const T5 &o5, const T6 &o6,
const T7 &o7, const T8 &o8)
{
StringPrivate::Composition c(fmt);
c.arg(o1).arg(o2).arg(o3).arg(o4).arg(o5).arg(o6).arg(o7).arg(o8);
return c.str();
}
template <typename T1, typename T2, typename T3, typename T4, typename T5,
typename T6, typename T7, typename T8, typename T9>
inline std::string compose(const std::string &fmt,
const T1 &o1, const T2 &o2, const T3 &o3,
const T4 &o4, const T5 &o5, const T6 &o6,
const T7 &o7, const T8 &o8, const T9 &o9)
{
StringPrivate::Composition c(fmt);
c.arg(o1).arg(o2).arg(o3).arg(o4).arg(o5).arg(o6).arg(o7).arg(o8).arg(o9);
return c.str();
}
template <typename T1, typename T2, typename T3, typename T4, typename T5,
typename T6, typename T7, typename T8, typename T9, typename T10>
inline std::string compose(const std::string &fmt,
const T1 &o1, const T2 &o2, const T3 &o3,
const T4 &o4, const T5 &o5, const T6 &o6,
const T7 &o7, const T8 &o8, const T9 &o9,
const T10 &o10)
{
StringPrivate::Composition c(fmt);
c.arg(o1).arg(o2).arg(o3).arg(o4).arg(o5).arg(o6).arg(o7).arg(o8).arg(o9)
.arg(o10);
return c.str();
}
template <typename T1, typename T2, typename T3, typename T4, typename T5,
typename T6, typename T7, typename T8, typename T9, typename T10,
typename T11>
inline std::string compose(const std::string &fmt,
const T1 &o1, const T2 &o2, const T3 &o3,
const T4 &o4, const T5 &o5, const T6 &o6,
const T7 &o7, const T8 &o8, const T9 &o9,
const T10 &o10, const T11 &o11)
{
StringPrivate::Composition c(fmt);
c.arg(o1).arg(o2).arg(o3).arg(o4).arg(o5).arg(o6).arg(o7).arg(o8).arg(o9)
.arg(o10).arg(o11);
return c.str();
}
template <typename T1, typename T2, typename T3, typename T4, typename T5,
typename T6, typename T7, typename T8, typename T9, typename T10,
typename T11, typename T12>
inline std::string compose(const std::string &fmt,
const T1 &o1, const T2 &o2, const T3 &o3,
const T4 &o4, const T5 &o5, const T6 &o6,
const T7 &o7, const T8 &o8, const T9 &o9,
const T10 &o10, const T11 &o11, const T12 &o12)
{
StringPrivate::Composition c(fmt);
c.arg(o1).arg(o2).arg(o3).arg(o4).arg(o5).arg(o6).arg(o7).arg(o8).arg(o9)
.arg(o10).arg(o11).arg(o12);
return c.str();
}
template <typename T1, typename T2, typename T3, typename T4, typename T5,
typename T6, typename T7, typename T8, typename T9, typename T10,
typename T11, typename T12, typename T13>
inline std::string compose(const std::string &fmt,
const T1 &o1, const T2 &o2, const T3 &o3,
const T4 &o4, const T5 &o5, const T6 &o6,
const T7 &o7, const T8 &o8, const T9 &o9,
const T10 &o10, const T11 &o11, const T12 &o12,
const T13 &o13)
{
StringPrivate::Composition c(fmt);
c.arg(o1).arg(o2).arg(o3).arg(o4).arg(o5).arg(o6).arg(o7).arg(o8).arg(o9)
.arg(o10).arg(o11).arg(o12).arg(o13);
return c.str();
}
template <typename T1, typename T2, typename T3, typename T4, typename T5,
typename T6, typename T7, typename T8, typename T9, typename T10,
typename T11, typename T12, typename T13, typename T14>
inline std::string compose(const std::string &fmt,
const T1 &o1, const T2 &o2, const T3 &o3,
const T4 &o4, const T5 &o5, const T6 &o6,
const T7 &o7, const T8 &o8, const T9 &o9,
const T10 &o10, const T11 &o11, const T12 &o12,
const T13 &o13, const T14 &o14)
{
StringPrivate::Composition c(fmt);
c.arg(o1).arg(o2).arg(o3).arg(o4).arg(o5).arg(o6).arg(o7).arg(o8).arg(o9)
.arg(o10).arg(o11).arg(o12).arg(o13).arg(o14);
return c.str();
}
template <typename T1, typename T2, typename T3, typename T4, typename T5,
typename T6, typename T7, typename T8, typename T9, typename T10,
typename T11, typename T12, typename T13, typename T14,
typename T15>
inline std::string compose(const std::string &fmt,
const T1 &o1, const T2 &o2, const T3 &o3,
const T4 &o4, const T5 &o5, const T6 &o6,
const T7 &o7, const T8 &o8, const T9 &o9,
const T10 &o10, const T11 &o11, const T12 &o12,
const T13 &o13, const T14 &o14, const T15 &o15)
{
StringPrivate::Composition c(fmt);
c.arg(o1).arg(o2).arg(o3).arg(o4).arg(o5).arg(o6).arg(o7).arg(o8).arg(o9)
.arg(o10).arg(o11).arg(o12).arg(o13).arg(o14).arg(o15);
return c.str();
}
}
#endif // STRING_COMPOSE_H
|
