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b2dad0e3 BK |
1 | // 990117 bkoz test functionality of basic_filebuf for char_type == char |
2 | ||
69302d8b | 3 | // Copyright (C) 1997-1999, 2000, 2001 Free Software Foundation, Inc. |
b2dad0e3 BK |
4 | // |
5 | // This file is part of the GNU ISO C++ Library. This library is free | |
6 | // software; you can redistribute it and/or modify it under the | |
7 | // terms of the GNU General Public License as published by the | |
8 | // Free Software Foundation; either version 2, or (at your option) | |
9 | // any later version. | |
10 | ||
11 | // This library is distributed in the hope that it will be useful, | |
12 | // but WITHOUT ANY WARRANTY; without even the implied warranty of | |
13 | // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
14 | // GNU General Public License for more details. | |
15 | ||
16 | // You should have received a copy of the GNU General Public License along | |
17 | // with this library; see the file COPYING. If not, write to the Free | |
18 | // Software Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307, | |
19 | // USA. | |
20 | ||
21 | // NB: this test assumes that _M_buf_size == 40, and not the usual | |
22 | // buffer_size length of 8092, so that overflow/underflow can be | |
23 | // simulated a bit more readily. | |
24 | ||
db353c2c GDR |
25 | // @require@ %-*.tst %-*.txt |
26 | // @diff@ %-*.tst %*.txt | |
27 | ||
b2dad0e3 | 28 | #include <fstream> |
aa1b2f7d | 29 | #include <debug_assert.h> |
b2dad0e3 BK |
30 | |
31 | const char carray_01[] = "santa cruz or sandiego?"; | |
32 | const char carray_02[] = "memphis, new orleans, and savanah"; | |
db353c2c GDR |
33 | const char name_01[] = "filebuf-1.txt"; // file with data in it |
34 | const char name_02[] = "filebuf-2.txt"; // empty file, need to create | |
35 | const char name_03[] = "filebuf-3.txt"; // empty file, need to create | |
b2dad0e3 BK |
36 | |
37 | class derived_filebuf: public std::filebuf | |
38 | { | |
39 | public: | |
40 | void | |
d207c3f7 | 41 | set_size(int_type __size) { _M_buf_size_opt = __size; } |
b2dad0e3 BK |
42 | }; |
43 | ||
44 | derived_filebuf fb_01; // in | |
45 | derived_filebuf fb_02; // out | |
46 | derived_filebuf fb_03; // in | out | |
47 | ||
48 | const int buffer_size = 8192; | |
49 | ||
ab30ba5c | 50 | |
b2dad0e3 BK |
51 | // initialize filebufs to be the same size regardless of platform |
52 | void test00() | |
53 | { | |
54 | fb_01.set_size(buffer_size); | |
55 | fb_02.set_size(buffer_size); | |
56 | fb_03.set_size(buffer_size); | |
57 | } | |
58 | ||
ab30ba5c | 59 | |
b2dad0e3 BK |
60 | // test the filebuf/stringbuf locale settings |
61 | bool test01() { | |
62 | std::locale loc_tmp; | |
63 | loc_tmp = fb_01.getloc(); | |
64 | fb_01.pubimbue(loc_tmp); //This should initialize _M_init to true | |
65 | fb_01.getloc(); //This should just return _M_locale | |
66 | ||
67 | return true; | |
68 | } | |
69 | ||
70 | ||
71 | // test member functions functions | |
72 | bool test02() { | |
73 | bool test = true; | |
74 | ||
75 | // bool is_open() | |
aa1b2f7d BV |
76 | VERIFY( !fb_01.is_open() ); |
77 | VERIFY( !fb_02.is_open() ); | |
78 | VERIFY( !fb_03.is_open() ); | |
b2dad0e3 BK |
79 | |
80 | // filebuf_type* open(const char* __s, ios_base::openmode __mode) | |
ab30ba5c | 81 | fb_01.open(name_01, std::ios_base::in | std::ios_base::ate); |
b2dad0e3 BK |
82 | fb_02.open(name_02, std::ios_base::in | std::ios_base::out | std::ios_base::trunc); |
83 | // Try to open two different files without closing the first: | |
84 | // Should keep the old file attached, and disregard attempt to overthrow. | |
85 | fb_02.open(name_03, std::ios_base::in | std::ios_base::out); | |
86 | fb_03.open(name_03, std::ios_base::out | std::ios_base::trunc); | |
aa1b2f7d BV |
87 | VERIFY( fb_01.is_open() ); |
88 | VERIFY( fb_02.is_open() ); | |
89 | VERIFY( fb_03.is_open() ); | |
b2dad0e3 BK |
90 | |
91 | // filebuf_type* close() | |
92 | fb_01.close(); | |
93 | fb_02.close(); | |
94 | fb_03.close(); | |
aa1b2f7d BV |
95 | VERIFY( !fb_01.is_open() ); |
96 | VERIFY( !fb_02.is_open() ); | |
97 | VERIFY( !fb_03.is_open() ); | |
b2dad0e3 BK |
98 | |
99 | #ifdef DEBUG_ASSERT | |
100 | assert(test); | |
101 | #endif | |
102 | ||
103 | return test; | |
104 | } | |
105 | ||
106 | ||
107 | // test overloaded virtual functions | |
108 | bool test03() { | |
109 | typedef std::filebuf::int_type int_type; | |
110 | typedef std::filebuf::traits_type traits_type; | |
111 | typedef std::filebuf::pos_type pos_type; | |
112 | typedef std::filebuf::off_type off_type; | |
113 | typedef size_t size_type; | |
114 | ||
115 | bool test = true; | |
116 | std::filebuf f_tmp; | |
117 | std::streamsize strmsz_1, strmsz_2; | |
118 | std::streamoff strmof_1, strmof_2; | |
119 | int i = 0, j = 0, k = 0; | |
120 | ||
121 | // GET | |
122 | // int showmanyc() | |
123 | // returns an estimate of the numbers of chars in the seq, or -1. | |
124 | // if __retval > 0, then calls to underflow won't return | |
125 | // traits_type::eof() till at least __retval chars. | |
126 | // if __retval == -1, then calls to underflow or uflow will fail. | |
127 | // NB overriding def if it can determine more chars can be read from | |
128 | // the input sequence. | |
129 | ||
130 | // int in_avail() | |
131 | // if a read position is available, return _M_in_end - _M_in_cur. | |
132 | // else return showmanyc. | |
133 | strmof_1 = fb_01.in_avail(); | |
134 | strmof_2 = fb_02.in_avail(); | |
aa1b2f7d BV |
135 | VERIFY( strmof_1 == -1 ); |
136 | VERIFY( strmof_1 == strmof_2 ); //fail because not open | |
b2dad0e3 | 137 | strmof_1 = fb_03.in_avail(); |
aa1b2f7d | 138 | VERIFY( strmof_1 == strmof_2 ); |
b2dad0e3 BK |
139 | fb_01.open(name_01, std::ios_base::in); |
140 | fb_02.open(name_02, std::ios_base::out | std::ios_base::trunc); | |
141 | fb_03.open(name_03, std::ios_base::out | std::ios_base::in | std::ios_base::trunc); | |
142 | strmof_1 = fb_01.in_avail(); | |
143 | strmof_2 = fb_02.in_avail(); | |
aa1b2f7d BV |
144 | VERIFY( strmof_1 != strmof_2 ); |
145 | VERIFY( strmof_1 >= 0 ); | |
146 | VERIFY( strmof_2 == -1 ); // empty file | |
b2dad0e3 | 147 | strmof_1 = fb_03.in_avail(); |
aa1b2f7d | 148 | VERIFY( strmof_1 == -1 ); // empty file |
b2dad0e3 BK |
149 | |
150 | // int_type sbumpc() | |
151 | // if read_cur not avail returns uflow(), else return *read_cur & increment | |
152 | int_type c1 = fb_01.sbumpc(); | |
153 | int_type c2 = fb_02.sbumpc(); | |
aa1b2f7d BV |
154 | VERIFY( c1 != c2 ); |
155 | VERIFY( c1 == '/' ); | |
156 | VERIFY( c2 == -1 ); | |
b2dad0e3 BK |
157 | int_type c3 = fb_01.sbumpc(); |
158 | int_type c4 = fb_02.sbumpc(); | |
aa1b2f7d BV |
159 | VERIFY( c3 != c4 ); |
160 | VERIFY( c1 == c3 ); // fluke, both happen to be '/' | |
161 | VERIFY( c2 == c4 ); | |
b2dad0e3 | 162 | int_type c5 = fb_03.sbumpc(); |
aa1b2f7d | 163 | VERIFY( c5 == traits_type::eof() ); |
b2dad0e3 BK |
164 | // XXX should do some kind of test to make sure that internal |
165 | // buffers point ot the same thing, to check consistancy. | |
166 | ||
167 | // int_type sgetc() | |
168 | // if read_cur not avail, return uflow(), else return *read_cur | |
169 | int_type c6 = fb_01.sgetc(); | |
170 | int_type c7 = fb_02.sgetc(); | |
aa1b2f7d BV |
171 | VERIFY( c6 != c3 ); |
172 | VERIFY( c7 == c4 ); // both -1 | |
b2dad0e3 BK |
173 | int_type c8 = fb_01.sgetc(); |
174 | int_type c9 = fb_02.sgetc(); | |
aa1b2f7d BV |
175 | VERIFY( c6 == c8 ); |
176 | VERIFY( c7 == c9 ); | |
b2dad0e3 | 177 | c5 = fb_03.sgetc(); |
aa1b2f7d | 178 | VERIFY( c5 == traits_type::eof() ); |
b2dad0e3 BK |
179 | |
180 | // int_type snextc() | |
181 | // calls sbumpc and if sbumpc != eof, return sgetc | |
182 | c6 = fb_01.snextc(); | |
183 | c7 = fb_02.snextc(); | |
aa1b2f7d BV |
184 | VERIFY( c6 != c8 ); |
185 | VERIFY( c7 == c9 ); // -1 | |
186 | VERIFY( c6 == '9' ); | |
b2dad0e3 BK |
187 | c6 = fb_01.snextc(); |
188 | c7 = fb_02.snextc(); | |
aa1b2f7d BV |
189 | VERIFY( c6 != c8 ); |
190 | VERIFY( c7 == c9 ); // -1 | |
191 | VERIFY( c6 == '9' ); | |
b2dad0e3 | 192 | c5 = fb_03.snextc(); |
aa1b2f7d | 193 | VERIFY( c5 == traits_type::eof() ); |
b2dad0e3 BK |
194 | |
195 | // streamsize sgetn(char_type *s, streamsize n) | |
196 | // streamsize xsgetn(char_type *s, streamsize n) | |
197 | // assign up to n chars to s from input sequence, indexing in_cur as | |
198 | // approp and returning the number of chars assigned | |
199 | strmsz_1 = fb_01.in_avail(); | |
200 | strmsz_2 = fb_02.in_avail(); | |
201 | test = strmsz_1 != strmsz_2; | |
202 | char carray1[13] = ""; | |
203 | strmsz_1 = fb_01.sgetn(carray1, 10); | |
204 | char carray2[buffer_size] = ""; | |
205 | strmsz_2 = fb_02.sgetn(carray2, 10); | |
aa1b2f7d BV |
206 | VERIFY( strmsz_1 != strmsz_2 ); |
207 | VERIFY( strmsz_1 == 10 ); | |
208 | VERIFY( strmsz_2 == 0 ); | |
b2dad0e3 BK |
209 | c1 = fb_01.sgetc(); |
210 | c2 = fb_02.sgetc(); | |
aa1b2f7d BV |
211 | VERIFY( c1 == '\n' ); |
212 | VERIFY( c7 == c2 ); // n != i | |
b2dad0e3 | 213 | strmsz_1 = fb_03.sgetn(carray1, 10); |
aa1b2f7d | 214 | VERIFY( !strmsz_1 ); //zero |
b2dad0e3 BK |
215 | strmsz_1 = fb_01.in_avail(); |
216 | strmsz_2 = fb_01.sgetn(carray2, strmsz_1 + 5); | |
aa1b2f7d | 217 | VERIFY( strmsz_1 == strmsz_2 - 5 ); |
b2dad0e3 | 218 | c4 = fb_01.sgetc(); // buffer should have underflowed from above. |
aa1b2f7d | 219 | VERIFY( c4 == 'i' ); |
b2dad0e3 | 220 | strmsz_1 = fb_01.in_avail(); |
aa1b2f7d | 221 | VERIFY( strmsz_1 > 0 ); |
b2dad0e3 | 222 | strmsz_2 = fb_01.sgetn(carray2, strmsz_1 + 5); |
aa1b2f7d | 223 | VERIFY( strmsz_1 == strmsz_2 ); //at the end of the actual file |
b2dad0e3 BK |
224 | strmsz_1 = fb_02.in_avail(); |
225 | strmsz_2 = fb_02.sgetn(carray2, strmsz_1 + 5); | |
aa1b2f7d BV |
226 | VERIFY( strmsz_1 == -1 ); |
227 | VERIFY( strmsz_2 == 0 ); | |
b2dad0e3 | 228 | c4 = fb_02.sgetc(); // should be EOF |
aa1b2f7d | 229 | VERIFY( c4 == traits_type::eof() ); |
b2dad0e3 BK |
230 | |
231 | // PUT | |
232 | // int_type sputc(char_type c) | |
233 | // if out_cur not avail, return overflow(traits_type::to_int_type(c)) | |
234 | // else, stores c at out_cur, | |
235 | // increments out_cur, and returns c as int_type | |
236 | // strmsz_1 = fb_03.in_avail(); // XXX valid for in|out?? | |
237 | c1 = fb_02.sputc('a'); | |
238 | c2 = fb_03.sputc('b'); | |
aa1b2f7d | 239 | VERIFY( c1 != c2 ); |
b2dad0e3 BK |
240 | c1 = fb_02.sputc('c'); |
241 | c2 = fb_03.sputc('d'); | |
aa1b2f7d | 242 | VERIFY( c1 != c2 ); |
b2dad0e3 | 243 | // strmsz_2 = fb_03.in_avail(); |
aa1b2f7d | 244 | // VERIFY( strmsz_1 != strmsz_2 ); |
b2dad0e3 BK |
245 | for (int i = 50; i <= 90; ++i) |
246 | c2 = fb_02.sputc(char(i)); | |
247 | // 27filebuf-2.txt == ac23456789:;<=>?@ABCDEFGHIJKLMNOPQRSTUVWX | |
248 | // fb_02._M_out_cur = '2' | |
249 | strmsz_1 = fb_03.in_avail(); | |
250 | for (int i = 50; i <= 90; ++i) | |
251 | c2 = fb_03.sputc(char(i)); | |
252 | strmsz_2 = fb_03.in_avail(); | |
aa1b2f7d BV |
253 | // VERIFY( strmsz_1 != strmsz_2 ); |
254 | // VERIFY( strmsz_1 > 0 ); | |
255 | // VERIFY( strmsz_2 > 0 ); | |
b2dad0e3 BK |
256 | // 27filebuf-2.txt == bd23456789:;<=>?@ABCDEFGHIJKLMNOPQRSTUVWX |
257 | // fb_02._M_out_cur = '2' | |
258 | c3 = fb_01.sputc('a'); // should be EOF because this is read-only | |
aa1b2f7d | 259 | VERIFY( c3 == traits_type::eof() ); |
b2dad0e3 BK |
260 | |
261 | // streamsize sputn(const char_typs* s, streamsize n) | |
262 | // write up to n chars to out_cur from s, returning number assigned | |
263 | // NB *sputn will happily put '\0' into your stream if you give it a chance* | |
264 | strmsz_1 = fb_03.sputn("racadabras", 10);//"abracadabras or what?" | |
aa1b2f7d | 265 | VERIFY( strmsz_1 == 10 ); |
b2dad0e3 | 266 | strmsz_2 = fb_03.sputn(", i wanna reach out and", 10); |
aa1b2f7d BV |
267 | VERIFY( strmsz_2 == 10 ); |
268 | VERIFY( strmsz_1 == strmsz_2 ); | |
b2dad0e3 BK |
269 | // fb_03._M_out_beg = "YZracadabras, i wanna FGHIJKLMNOPQRSTUVW" |
270 | // fb_03._M_out_cur = "FGHIJKLMNOPQRSTUVW" | |
271 | strmsz_1 = fb_02.sputn("racadabras", 10); | |
aa1b2f7d | 272 | VERIFY( strmsz_1 == 10 ); |
b2dad0e3 BK |
273 | // fb_02._M_out_beg = "YZracadabras<=>?@ABCDEFGHIJKLMNOPQRSTUVW" |
274 | // fb_02._M_out_cur = "<=>?@ABCDEFGHIJKLMNOPQRSTUVW" | |
275 | strmsz_1 = fb_01.sputn("racadabra", 10); | |
aa1b2f7d | 276 | VERIFY( strmsz_1 == 0 ); |
b2dad0e3 BK |
277 | |
278 | // PUTBACK | |
279 | // int_type pbfail(int_type c) | |
280 | // called when gptr() null, gptr() == eback(), or traits::eq(*gptr, c) false | |
281 | // "pending sequence" is: | |
282 | // 1) everything as defined in underflow | |
283 | // 2) + if (traits::eq_int_type(c, traits::eof()), then input | |
284 | // sequence is backed up one char before the pending sequence is | |
285 | // determined. | |
286 | // 3) + if (not 2) then c is prepended. Left unspecified is | |
287 | // whether the input sequence is backedup or modified in any way | |
288 | // returns traits::eof() for failure, unspecified other value for success | |
289 | ||
290 | // int_type sputbackc(char_type c) | |
291 | // if in_cur not avail || ! traits::eq(c, gptr() [-1]), return pbfail | |
292 | // otherwise decrements in_cur and returns *gptr() | |
293 | c1 = fb_03.sgetc(); // -1 | |
294 | c2 = fb_03.sputbackc('z'); | |
295 | strmsz_2 = fb_03.in_avail(); | |
296 | c3 = fb_03.sgetc(); | |
aa1b2f7d BV |
297 | VERIFY( c3 == c2 ); |
298 | VERIFY( c1 != c3 ); | |
299 | VERIFY( 1 == strmsz_2 ); | |
b2dad0e3 BK |
300 | //test for _in_cur == _in_beg |
301 | // fb_03._M_out_beg = "bd23456789:;<=>?@ABCDEFGHIJKLMNOPQRSTUVWXYZracada" etc | |
302 | fb_03.pubseekoff(10, std::ios_base::beg, | |
303 | std::ios_base::in | std::ios_base::out); | |
304 | fb_03.sputc('m'); | |
305 | strmsz_1 = fb_03.in_avail(); | |
306 | c1 = fb_03.sgetc(); | |
307 | fb_03.snextc(); | |
308 | c2 = fb_03.sputbackc('z'); | |
309 | strmsz_2 = fb_03.in_avail(); | |
310 | c3 = fb_03.sgetc(); | |
aa1b2f7d BV |
311 | VERIFY( c1 != c2 ); |
312 | VERIFY( c3 == c2 ); | |
313 | VERIFY( c1 != c3 ); | |
314 | VERIFY( c2 == 'z' ); | |
315 | VERIFY( strmsz_1 == strmsz_2 ); | |
b2dad0e3 BK |
316 | // test for replacing char with identical one |
317 | fb_03.snextc(); | |
318 | fb_03.sputc('u'); | |
319 | fb_03.sputc('v'); | |
320 | fb_03.sputc('a'); | |
321 | strmsz_1 = fb_03.in_avail(); | |
322 | c2 = fb_03.sputbackc('a'); | |
323 | strmsz_2 = fb_03.in_avail(); | |
324 | c3 = fb_03.sgetc(); | |
aa1b2f7d BV |
325 | VERIFY( c3 == c2 ); |
326 | VERIFY( strmsz_1 + 1 == strmsz_2 ); | |
b2dad0e3 BK |
327 | //test for ios_base::out |
328 | c1 = fb_02.sgetc(); // undefined | |
329 | c2 = fb_02.sputbackc('a'); | |
aa1b2f7d BV |
330 | VERIFY( c1 == c2 ); |
331 | VERIFY( c1 == -1 ); | |
b2dad0e3 BK |
332 | |
333 | // int_type sungetc() | |
334 | // if in_cur not avail, return pbackfail(), else decrement and | |
335 | // return to_int_type(*gptr()) | |
336 | // fb_03._M_out_beg = "uvaacadabras, i wannaZ[\\]^_`abcdefghijkl" | |
337 | // fb_03._M_out_cur = "aacadabras, i wannaZ[\\]^_`abcdefghijkl" | |
338 | strmsz_1 = fb_03.in_avail(); | |
339 | c2 = fb_03.sungetc(); // delete the 'a' | |
340 | strmsz_2 = fb_03.in_avail(); | |
aa1b2f7d BV |
341 | VERIFY( c2 == 'v' ); // VERIFY( c2 != traits_type::eof() ); |
342 | VERIFY( strmsz_1 + 1 == strmsz_2 ); | |
b2dad0e3 BK |
343 | //test for _in_cur == _in_beg |
344 | for (int i = 50; i < 32 + 29; ++i) | |
345 | fb_02.sputc(char(i)); | |
346 | fb_02.pubseekoff(0, std::ios_base::beg, std::ios_base::out); | |
347 | strmsz_1 = fb_02.in_avail(); | |
348 | c1 = fb_02.sgetc(); | |
349 | c2 = fb_02.sungetc(); | |
350 | strmsz_2 = fb_02.in_avail(); | |
351 | c3 = fb_02.sgetc(); | |
aa1b2f7d BV |
352 | VERIFY( c1 == c2 ); |
353 | VERIFY( c3 == c2 ); | |
354 | VERIFY( c1 == c3 ); | |
355 | VERIFY( c2 == traits_type::eof() ); | |
356 | VERIFY( strmsz_1 == strmsz_2 ); | |
b2dad0e3 BK |
357 | //test for _in_cur == _in_end |
358 | fb_03.pubseekoff(0, std::ios_base::end); | |
359 | strmsz_1 = fb_03.in_avail(); // -1 cuz at the end | |
360 | c1 = fb_03.sgetc(); | |
361 | c2 = fb_03.sungetc(); | |
362 | strmsz_2 = fb_03.in_avail(); // 1 | |
363 | c3 = fb_03.sgetc(); | |
aa1b2f7d BV |
364 | VERIFY( c1 != c2 ); |
365 | // VERIFY( c2 == c3 || c2 == traits_type::not_eof(int(c3)) ); | |
366 | VERIFY( strmsz_2 != strmsz_1 ); | |
367 | VERIFY( strmsz_2 == 1 ); | |
b2dad0e3 BK |
368 | //test for ios_base::out |
369 | ||
370 | // BUFFER MANAGEMENT & POSITIONING | |
371 | // int sync() | |
372 | // if a put area exists, overflow. | |
373 | // if a get area exists, do something undefined. (like, nothing) | |
374 | strmsz_1 = fb_01.in_avail(); | |
375 | fb_01.pubsync(); | |
376 | strmsz_2 = fb_01.in_avail(); | |
aa1b2f7d | 377 | VERIFY( strmsz_2 == strmsz_1 ); |
b2dad0e3 BK |
378 | strmsz_1 = fb_02.in_avail(); |
379 | fb_02.pubsync(); | |
380 | // 27filebuf-2.txt == 53 bytes after this. | |
381 | strmsz_2 = fb_02.in_avail(); | |
aa1b2f7d BV |
382 | VERIFY( strmsz_2 == -1 ); |
383 | VERIFY( strmsz_2 == strmsz_1 ); | |
b2dad0e3 BK |
384 | strmsz_1 = fb_03.in_avail(); |
385 | fb_03.pubsync(); | |
386 | // 27filebuf-3.txt | |
387 | // bd23456789mzuva?@ABCDEFGHIJKLMNOPQRSTUVWXYZracadabras, i wannaz | |
388 | // 63 bytes. | |
389 | strmsz_2 = fb_03.in_avail(); | |
aa1b2f7d BV |
390 | VERIFY( strmsz_1 == 1 ); |
391 | VERIFY( strmsz_2 == 1 ); | |
b2dad0e3 BK |
392 | |
393 | // setbuf | |
394 | // pubsetbuf(char_type* s, streamsize n) | |
395 | fb_01.pubsetbuf(0,0); | |
396 | fb_02.pubsetbuf(0,0); | |
397 | fb_03.pubsetbuf(0,0); | |
398 | // Need to test unbuffered output, which means calling this on some | |
399 | // things that have just been opened. | |
400 | ||
401 | ||
402 | // seekoff | |
403 | // pubseekoff(off_type off, ios_base::seekdir way, ios_base::openmode which) | |
404 | // alters the stream position to off | |
405 | pos_type pt_1(off_type(-1)); | |
406 | pos_type pt_2(off_type(0)); | |
407 | off_type off_1 = 0; | |
408 | off_type off_2 = 0; | |
409 | //IN|OUT | |
410 | // 27filebuf-3.txt = bd23456789:;<=>?... | |
411 | //beg | |
412 | strmsz_1 = fb_03.in_avail(); | |
413 | pt_1 = fb_03.pubseekoff(2, std::ios_base::beg); | |
414 | strmsz_2 = fb_03.in_avail(); | |
97e0a05a | 415 | off_1 = pt_1; |
aa1b2f7d | 416 | VERIFY( off_1 > 0 ); |
b2dad0e3 | 417 | c1 = fb_03.snextc(); //current in pointer +1 |
aa1b2f7d | 418 | VERIFY( c1 == '3' ); |
b2dad0e3 BK |
419 | c2 = fb_03.sputc('\n'); //current in pointer +1 |
420 | c3 = fb_03.sgetc(); | |
aa1b2f7d BV |
421 | VERIFY( c2 != c3 ); |
422 | VERIFY( c3 == '4' ); | |
b2dad0e3 BK |
423 | fb_03.pubsync(); |
424 | c1 = fb_03.sgetc(); | |
aa1b2f7d | 425 | VERIFY( c1 == c3 ); |
b2dad0e3 BK |
426 | //cur |
427 | // 27filebuf-3.txt = bd2\n456789:;<=>?... | |
428 | pt_2 = fb_03.pubseekoff(2, std::ios_base::cur); | |
97e0a05a | 429 | off_2 = pt_2; |
aa1b2f7d | 430 | VERIFY( (off_2 == (off_1 + 2 + 1 + 1)) ); |
b2dad0e3 | 431 | c1 = fb_03.snextc(); //current in pointer +1 |
aa1b2f7d | 432 | VERIFY( c1 == '7' ); |
b2dad0e3 BK |
433 | c2 = fb_03.sputc('x'); //test current out pointer |
434 | c3 = fb_03.sputc('\n'); | |
435 | c1 = fb_03.sgetc(); | |
436 | fb_03.pubsync(); | |
437 | c3 = fb_03.sgetc(); | |
aa1b2f7d | 438 | VERIFY( c1 == c3 ); |
b2dad0e3 BK |
439 | //end |
440 | // 27filebuf-3.txt = "bd2\n456x\n9" | |
441 | pt_2 = fb_03.pubseekoff(0, std::ios_base::end, | |
442 | std::ios_base::in|std::ios_base::out); | |
97e0a05a | 443 | off_1 = pt_2; |
aa1b2f7d | 444 | VERIFY( off_1 > off_2 ); //weak, but don't know exactly where it ends |
b2dad0e3 BK |
445 | c3 = fb_03.sputc('\n'); |
446 | strmsz_1 = fb_03.sputn("because because because. . .", 28); | |
aa1b2f7d | 447 | VERIFY( strmsz_1 == 28 ); |
b2dad0e3 BK |
448 | c1 = fb_03.sungetc(); |
449 | fb_03.pubsync(); | |
450 | c3 = fb_03.sgetc(); | |
aa1b2f7d | 451 | VERIFY( c1 == c3 ); |
b2dad0e3 BK |
452 | // IN |
453 | // OUT | |
454 | ||
455 | ||
456 | // seekpos | |
457 | // pubseekpos(pos_type sp, ios_base::openmode) | |
458 | // alters the stream position to sp | |
459 | //IN|OUT | |
460 | //beg | |
461 | pt_1 = fb_03.pubseekoff(78, std::ios_base::beg); | |
97e0a05a | 462 | off_1 = pt_1; |
aa1b2f7d | 463 | VERIFY( off_1 > 0 ); |
b2dad0e3 | 464 | c1 = fb_03.snextc(); //current in pointer +1 |
aa1b2f7d | 465 | VERIFY( c1 == ' ' ); |
b2dad0e3 BK |
466 | c2 = fb_03.sputc('\n'); //test current out pointer |
467 | c3 = fb_03.sgetc(); | |
468 | fb_03.pubsync(); //resets pointers | |
469 | pt_2 = fb_03.pubseekpos(pt_1); | |
97e0a05a | 470 | off_2 = pt_2; |
aa1b2f7d | 471 | VERIFY( off_1 == off_2 ); |
b2dad0e3 | 472 | c3 = fb_03.snextc(); //current in pointer +1 |
aa1b2f7d | 473 | VERIFY( c2 == c3 ); |
b2dad0e3 | 474 | pt_1 = fb_03.pubseekoff(0, std::ios_base::end); |
97e0a05a | 475 | off_1 = pt_1; |
aa1b2f7d | 476 | VERIFY( off_1 > off_2 ); |
b2dad0e3 BK |
477 | fb_03.sputn("\nof the wonderful things he does!!\nok", 37); |
478 | fb_03.pubsync(); | |
479 | ||
480 | // IN | |
481 | // OUT | |
482 | ||
483 | // VIRTUALS (indirectly tested) | |
484 | // underflow | |
485 | // if read position avail, returns *gptr() | |
486 | ||
487 | // pbackfail(int_type c) | |
488 | // put c back into input sequence | |
489 | ||
490 | // overflow | |
491 | // appends c to output seq | |
492 | ||
493 | // NB Have to close these suckers. . . | |
494 | // filebuf_type* close() | |
495 | fb_01.close(); | |
496 | fb_02.close(); | |
497 | fb_03.close(); | |
aa1b2f7d BV |
498 | VERIFY( !fb_01.is_open() ); |
499 | VERIFY( !fb_02.is_open() ); | |
500 | VERIFY( !fb_03.is_open() ); | |
b2dad0e3 BK |
501 | |
502 | #ifdef DEBUG_ASSERT | |
503 | assert(test); | |
504 | #endif | |
505 | ||
506 | return test; | |
507 | } | |
508 | ||
c0b84d79 VE |
509 | bool test04() |
510 | { | |
511 | using namespace std; | |
512 | typedef istream::int_type int_type; | |
513 | ||
514 | bool test = true; | |
515 | ifstream ifs(name_02); | |
516 | char buffer[] = "xxxxxxxxxx"; | |
517 | int_type len1 = ifs.rdbuf()->sgetn(buffer, sizeof(buffer)); | |
aa1b2f7d BV |
518 | VERIFY( len1 == sizeof(buffer) ); |
519 | VERIFY( buffer[0] == 'a' ); | |
b2dad0e3 | 520 | |
c0b84d79 VE |
521 | #ifdef DEBUG_ASSERT |
522 | assert(test); | |
523 | #endif | |
524 | return test; | |
525 | } | |
526 | ||
c0a26060 BK |
527 | // test05 |
528 | // libstdc++/1886 | |
529 | // should be able to instantiate basic_filebuf for non-standard types. | |
530 | template class std::basic_filebuf<short, std::char_traits<short> >; | |
531 | ||
69302d8b BK |
532 | // test06 |
533 | // libstdc++/2020 | |
534 | // should be able to use custom char_type | |
535 | class gnu_char_type | |
536 | { | |
537 | unsigned long character; | |
538 | public: | |
539 | // operator == | |
540 | bool | |
541 | operator==(const gnu_char_type& __lhs) | |
542 | { return character == __lhs.character; } | |
543 | ||
544 | // operator < | |
545 | bool | |
546 | operator<(const gnu_char_type& __lhs) | |
547 | { return character < __lhs.character; } | |
548 | ||
39003c99 BK |
549 | // default ctor |
550 | gnu_char_type() { } | |
551 | ||
69302d8b BK |
552 | // to_char_type |
553 | gnu_char_type(const unsigned long& __l) : character(__l) { } | |
554 | ||
555 | // to_int_type | |
556 | operator unsigned long() const { return character; } | |
557 | }; | |
558 | ||
559 | bool test06() | |
560 | { | |
561 | bool test = true; | |
562 | typedef std::basic_filebuf<gnu_char_type> gnu_filebuf; | |
563 | ||
564 | try | |
565 | { gnu_filebuf obj; } | |
566 | catch(std::exception& obj) | |
567 | { | |
568 | test = false; | |
569 | VERIFY( test ); | |
570 | } | |
571 | return test; | |
572 | } | |
c0a26060 | 573 | |
c0b84d79 VE |
574 | int main() |
575 | { | |
b2dad0e3 BK |
576 | test00(); |
577 | test01(); | |
578 | test02(); | |
579 | test03(); | |
c0b84d79 | 580 | test04(); |
b2dad0e3 | 581 | |
69302d8b | 582 | test06(); |
b2dad0e3 BK |
583 | return 0; |
584 | } | |
585 | ||
586 | ||
587 | ||
588 | // more surf!!! |