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  • Committer: edam
  • Date: 2012-05-18 12:11:01 UTC
  • Revision ID: tim@ed.am-20120518121101-0wik922hyvjkcjdi
switched back to using classes for modes

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src/utility/sstream
1
 
/*      Copyright (C) 2004 Garrett A. Kajmowicz
2
 
 
3
 
        This file is part of the uClibc++ Library.
4
 
 
5
 
        This library is free software; you can redistribute it and/or
6
 
        modify it under the terms of the GNU Lesser General Public
7
 
        License as published by the Free Software Foundation; either
8
 
        version 2.1 of the License, or (at your option) any later version.
9
 
 
10
 
        This library is distributed in the hope that it will be useful,
11
 
        but WITHOUT ANY WARRANTY; without even the implied warranty of
12
 
        MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
13
 
        Lesser General Public License for more details.
14
 
 
15
 
        You should have received a copy of the GNU Lesser General Public
16
 
        License along with this library; if not, write to the Free Software
17
 
        Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
18
 
*/
19
 
 
20
 
#include <basic_definitions>
21
 
 
22
 
#ifndef HEADER_STD_SSTREAM
23
 
#define HEADER_STD_SSTREAM 1
24
 
 
25
 
#include <iosfwd>
26
 
#include <ios>
27
 
#include <istream>
28
 
#include <ostream>
29
 
#include <iostream>
30
 
#include <string>
31
 
 
32
 
#pragma GCC visibility push(default)
33
 
 
34
 
namespace std{
35
 
 
36
 
        template <class charT, class traits, class Allocator>
37
 
                class _UCXXEXPORT basic_stringbuf : public basic_streambuf<charT,traits>
38
 
        {
39
 
        public:
40
 
                typedef charT char_type;
41
 
                typedef typename traits::int_type int_type;
42
 
                typedef typename traits::pos_type pos_type;
43
 
                typedef typename traits::off_type off_type;
44
 
                typedef typename Allocator::size_type size_type;
45
 
 
46
 
                explicit _UCXXEXPORT basic_stringbuf(ios_base::openmode which = ios_base::in | ios_base::out)
47
 
                        : data(), ielement(0), oelement(0)
48
 
                {
49
 
                        basic_streambuf<charT,traits>::openedFor = which;
50
 
                }
51
 
 
52
 
                explicit _UCXXEXPORT basic_stringbuf(const basic_string<charT,traits,Allocator>& str,
53
 
                        ios_base::openmode which = ios_base::in | ios_base::out)
54
 
                        : data(str), ielement(0), oelement(0)
55
 
                {
56
 
                        if(which & ios_base::ate){
57
 
                                oelement = data.length();
58
 
                        }
59
 
                        basic_streambuf<charT,traits>::openedFor = which;
60
 
                }
61
 
 
62
 
                virtual _UCXXEXPORT ~basic_stringbuf() { }
63
 
 
64
 
                _UCXXEXPORT basic_string<charT,traits,Allocator> str() const{
65
 
                        return data;
66
 
                }
67
 
 
68
 
                _UCXXEXPORT void str(const basic_string<charT,traits,Allocator>& s){
69
 
                        data = s;
70
 
                        ielement = 0;
71
 
                        if(basic_streambuf<charT,traits>::openedFor & ios_base::ate){
72
 
                                oelement = data.length();
73
 
                        }else{
74
 
                                oelement = 0;
75
 
                        }
76
 
                }
77
 
 
78
 
        protected:
79
 
                virtual _UCXXEXPORT int sync(){
80
 
                        return 0;
81
 
                }
82
 
                virtual _UCXXEXPORT int_type underflow(){
83
 
                        if(ielement >= data.length()){
84
 
                                return traits::eof();
85
 
                        }
86
 
                        return traits::to_int_type(data[ielement]);
87
 
                }
88
 
 
89
 
                virtual _UCXXEXPORT int_type uflow(){
90
 
                        int_type retval = underflow();
91
 
                        if(retval != traits::eof()){
92
 
                                ++ielement;
93
 
                        }
94
 
                        return retval;  
95
 
                }
96
 
 
97
 
                virtual _UCXXEXPORT int_type   pbackfail(int_type c = traits::eof()){
98
 
                        //Error possibilities
99
 
                        if(ielement == 0){
100
 
                                return traits::eof();
101
 
                        }
102
 
                        if(ielement > data.length()){
103
 
                                ielement = data.length();
104
 
                                return traits::eof();
105
 
                        }
106
 
                        //eof passed in
107
 
                        if(traits::eq_int_type(c,traits::eof())==true){
108
 
                                --ielement;
109
 
                                return traits::not_eof(c);
110
 
                        }
111
 
                        if(traits::eq(traits::to_char_type(c),data[ielement-1]) == true){
112
 
                                --ielement;
113
 
                                return c;
114
 
                        }
115
 
                        if(basic_streambuf<charT,traits>::openedFor & ios_base::out){
116
 
                                --ielement;
117
 
                                data[ielement] = c;
118
 
                                return c;
119
 
                        }
120
 
                        return traits::eof();
121
 
                }
122
 
 
123
 
                virtual _UCXXEXPORT int showmanyc(){
124
 
                        return data.length() - ielement;
125
 
                }
126
 
                virtual _UCXXEXPORT streamsize xsgetn(char_type* c, streamsize n){
127
 
                        streamsize i = 0;
128
 
                        while(ielement < data.length() && i < n ){
129
 
                                c[i] = data[ielement];
130
 
                                ++i;
131
 
                                ++ielement;
132
 
                        }
133
 
                        return i;
134
 
                }
135
 
 
136
 
                virtual _UCXXEXPORT int_type overflow (int_type c = traits::eof()){
137
 
                        //Nothing to do
138
 
                        if(traits::eq_int_type(c,traits::eof())){
139
 
                                return traits::not_eof(c);
140
 
                        }
141
 
 
142
 
                        //Actually add character, if possible
143
 
                        if(basic_streambuf<charT,traits>::openedFor & ios_base::out){
144
 
                                if(oelement >= data.length()){
145
 
                                        data.push_back(c);
146
 
                                }else{
147
 
                                        data[oelement] = c;
148
 
                                }
149
 
                                ++oelement;
150
 
                                return c;
151
 
                        }
152
 
                        //Not possible
153
 
                        return traits::eof();
154
 
                }
155
 
 
156
 
                virtual _UCXXEXPORT basic_streambuf<charT,traits>* setbuf(charT*, streamsize){
157
 
                        //This function does nothing
158
 
                        return this;
159
 
                }
160
 
 
161
 
                virtual _UCXXEXPORT streamsize xsputn(const char_type* s, streamsize n){
162
 
                        data.replace(oelement, n, s, n);
163
 
                        oelement += n;
164
 
                        return n;
165
 
                }
166
 
 
167
 
                virtual _UCXXEXPORT pos_type seekoff(off_type off, ios_base::seekdir way,
168
 
                        ios_base::openmode which = ios_base::in | ios_base::out)
169
 
                {
170
 
                        //Test for invalid option
171
 
                        if( (which & ios_base::in) && (which & ios_base::out) && (way == ios_base::cur)){
172
 
                                return -1;
173
 
                        }
174
 
 
175
 
                        //Calculate new location
176
 
                        size_type newpos = 0;
177
 
 
178
 
                        if(way == ios_base::beg){
179
 
                                newpos = off;
180
 
                        }else if(way == ios_base::cur){
181
 
                                if(which & ios_base::out){
182
 
                                        newpos = data.length() + off;
183
 
                                }
184
 
                                if(which & ios_base::in){
185
 
                                        newpos = ielement + off;
186
 
                                }
187
 
                                
188
 
                        }else{
189
 
                                newpos = data.length() + off;
190
 
                        }
191
 
 
192
 
                        //Test for error conditions
193
 
                        if(newpos > data.length()){
194
 
                                return -1;
195
 
                        }
196
 
 
197
 
                        //Shuffle pointers
198
 
 
199
 
                        if(which & ios_base::in){
200
 
                                ielement = newpos;
201
 
                        }
202
 
                        if(which & ios_base::out){
203
 
                                data.resize(newpos);
204
 
                                if(ielement > data.length()){
205
 
                                        ielement = data.length();
206
 
                                }
207
 
                        }
208
 
 
209
 
                        return newpos;
210
 
                }
211
 
                        
212
 
                virtual _UCXXEXPORT pos_type seekpos(pos_type sp, 
213
 
                        ios_base::openmode which = ios_base::in | ios_base::out)
214
 
                {
215
 
                        return seekoff(sp, ios_base::beg, which);
216
 
                }
217
 
 
218
 
                basic_string<charT,traits,Allocator> data;
219
 
                size_type ielement;
220
 
                size_type oelement;
221
 
        };
222
 
 
223
 
 
224
 
        template <class charT, class traits, class Allocator> class _UCXXEXPORT basic_istringstream
225
 
                : public basic_istream<charT,traits>
226
 
        {
227
 
        public:
228
 
                typedef charT char_type;
229
 
                typedef typename traits::int_type int_type;
230
 
                typedef typename traits::pos_type pos_type;
231
 
                typedef typename traits::off_type off_type;
232
 
 
233
 
 
234
 
                explicit _UCXXEXPORT basic_istringstream(ios_base::openmode m = ios_base::in) 
235
 
                        : basic_ios<charT, traits>(&sb), basic_istream<charT,traits>(&sb), sb(m)
236
 
                {
237
 
                }
238
 
                explicit _UCXXEXPORT basic_istringstream( const basic_string<charT,traits,Allocator>& str, 
239
 
                        ios_base::openmode which = ios_base::in) 
240
 
                        : basic_ios<charT, traits>(&sb), basic_istream<charT,traits>(&sb), sb(str, which)
241
 
                {
242
 
                }
243
 
                virtual _UCXXEXPORT ~basic_istringstream() {  }
244
 
                _UCXXEXPORT basic_stringbuf<charT,traits,Allocator>* rdbuf() const{
245
 
                        return &sb;
246
 
                }
247
 
                _UCXXEXPORT basic_string<charT,traits,Allocator> str() const{
248
 
                        return sb.str();
249
 
                }
250
 
                _UCXXEXPORT void str(const basic_string<charT,traits,Allocator>& s){
251
 
                        sb.str(s);
252
 
                        basic_istream<charT,traits>::clear();
253
 
                }
254
 
        private:
255
 
                basic_stringbuf<charT,traits,Allocator> sb;
256
 
        };
257
 
 
258
 
 
259
 
        template <class charT, class traits, class Allocator> class _UCXXEXPORT basic_ostringstream
260
 
                : public basic_ostream<charT,traits>
261
 
        {
262
 
        public:
263
 
 
264
 
                typedef charT char_type;
265
 
                typedef typename traits::int_type int_type;
266
 
                typedef typename traits::pos_type pos_type;
267
 
                typedef typename traits::off_type off_type;
268
 
 
269
 
                explicit _UCXXEXPORT basic_ostringstream(ios_base::openmode m = ios_base::out)
270
 
                        : basic_ios<charT, traits>(&sb), basic_ostream<charT,traits>(&sb), sb(m)
271
 
                {
272
 
                }
273
 
                explicit _UCXXEXPORT basic_ostringstream(const basic_string<charT,traits,Allocator>& str, 
274
 
                        ios_base::openmode which = ios_base::out)
275
 
                        : basic_ios<charT, traits>(&sb), basic_ostream<charT,traits>(&sb), sb(str, which)
276
 
                {
277
 
                }
278
 
                virtual _UCXXEXPORT ~basic_ostringstream() {  }
279
 
 
280
 
                _UCXXEXPORT basic_stringbuf<charT,traits,Allocator>* rdbuf() const{
281
 
                        return &sb;
282
 
                }
283
 
                _UCXXEXPORT basic_string<charT,traits,Allocator> str() const{
284
 
                        return sb.str();
285
 
                }
286
 
                _UCXXEXPORT void str(const basic_string<charT,traits,Allocator>& s){
287
 
                        sb.str(s);
288
 
                        basic_ostream<charT,traits>::clear();
289
 
                }
290
 
        private:
291
 
                basic_stringbuf<charT,traits,Allocator> sb;
292
 
        };
293
 
 
294
 
 
295
 
        template <class charT, class traits, class Allocator> class _UCXXEXPORT basic_stringstream
296
 
                 : public basic_iostream<charT,traits>
297
 
        {
298
 
        public:
299
 
 
300
 
                typedef charT char_type;
301
 
                typedef typename traits::int_type int_type;
302
 
                typedef typename traits::pos_type pos_type;
303
 
                typedef typename traits::off_type off_type;
304
 
 
305
 
                explicit _UCXXEXPORT basic_stringstream(ios_base::openmode which = ios_base::out|ios_base::in)
306
 
                        : basic_ios<charT, traits>(&sb), basic_iostream<charT,traits>(&sb), sb(which)
307
 
                {
308
 
                }
309
 
 
310
 
                explicit _UCXXEXPORT basic_stringstream(const basic_string<charT,traits,Allocator>& str,
311
 
                        ios_base::openmode which = ios_base::out|ios_base::in)
312
 
                        : basic_ios<charT, traits>(&sb), basic_iostream<charT,traits>(&sb), sb(str, which)
313
 
                {
314
 
                }
315
 
                virtual _UCXXEXPORT ~basic_stringstream(){  }
316
 
 
317
 
                _UCXXEXPORT basic_stringbuf<charT,traits,Allocator>* rdbuf(){
318
 
                        return &sb;
319
 
                }
320
 
                _UCXXEXPORT basic_string<charT,traits,Allocator> str() const{
321
 
                        return sb.str();
322
 
                }
323
 
                _UCXXEXPORT void str(const basic_string<charT,traits,Allocator>& s){
324
 
                        sb.str(s);
325
 
                        basic_iostream<charT,traits>::clear();
326
 
                }
327
 
        private:
328
 
                basic_stringbuf<charT, traits> sb;
329
 
        };
330
 
 
331
 
#ifdef __UCLIBCXX_EXPAND_SSTREAM_CHAR__
332
 
#ifndef __UCLIBCXX_COMPILE_SSTREAM__
333
 
 
334
 
#ifdef __UCLIBCXX_EXPAND_CONSTRUCTORS_DESTRUCTORS__
335
 
 
336
 
        template <> _UCXXEXPORT basic_stringbuf<char, char_traits<char>, allocator<char> >::
337
 
                basic_stringbuf(ios_base::openmode which);
338
 
        template <> _UCXXEXPORT basic_stringbuf<char, char_traits<char>, allocator<char> >::~basic_stringbuf();
339
 
 
340
 
#endif // __UCLIBCXX_EXPAND_CONSTRUCTORS_DESTRUCTORS__
341
 
 
342
 
        template <> _UCXXEXPORT basic_string<char, char_traits<char>, allocator<char> >
343
 
                basic_stringbuf<char, char_traits<char>, allocator<char> >::str() const;
344
 
 
345
 
        template <> _UCXXEXPORT basic_stringbuf<char, char_traits<char>, allocator<char> >::int_type
346
 
                basic_stringbuf<char, char_traits<char>, allocator<char> >::
347
 
                        pbackfail(basic_stringbuf<char, char_traits<char>, allocator<char> >::int_type c);
348
 
 
349
 
        template <> _UCXXEXPORT basic_stringbuf<char, char_traits<char>, allocator<char> >::pos_type
350
 
                basic_stringbuf<char, char_traits<char>, allocator<char> >::
351
 
                        seekoff (basic_stringbuf<char, char_traits<char>, allocator<char> >::off_type off,
352
 
                                ios_base::seekdir way,
353
 
                                ios_base::openmode which
354
 
                        );
355
 
 
356
 
        template <> _UCXXEXPORT basic_stringbuf<char, char_traits<char>, allocator<char> >::int_type
357
 
                basic_stringbuf<char, char_traits<char>, allocator<char> >::
358
 
                        overflow (basic_stringbuf<char, char_traits<char>, allocator<char> >::int_type c);
359
 
 
360
 
        template <> _UCXXEXPORT basic_stringbuf<char, char_traits<char>, allocator<char> >::int_type
361
 
                basic_stringbuf<char, char_traits<char>, allocator<char> >::underflow ();
362
 
 
363
 
        template <> _UCXXEXPORT streamsize basic_stringbuf<char, char_traits<char>, allocator<char> >::
364
 
                xsputn(const char* s, streamsize n);
365
 
 
366
 
#ifdef __UCLIBCXX_EXPAND_CONSTRUCTORS_DESTRUCTORS__
367
 
 
368
 
        template <> _UCXXEXPORT basic_stringstream<char, char_traits<char>, allocator<char> >::
369
 
                basic_stringstream(ios_base::openmode which);
370
 
        template <> _UCXXEXPORT basic_stringstream<char, char_traits<char>, allocator<char> >::~basic_stringstream();
371
 
        template <> _UCXXEXPORT basic_istringstream<char, char_traits<char>, allocator<char> >::~basic_istringstream();
372
 
        template <> _UCXXEXPORT basic_ostringstream<char, char_traits<char>, allocator<char> >::~basic_ostringstream();
373
 
 
374
 
#endif //__UCLIBCXX_EXPAND_CONSTRUCTORS_DESTRUCTORS__
375
 
 
376
 
#endif
377
 
#endif
378
 
 
379
 
#pragma GCC visibility pop
380
 
 
381
 
}
382
 
 
383
 
 
384
 
#endif