projects / thirdparty / gcc.git / blame
| Commit | Line | Data |
|---|---|---|
| 46c4e5d6 BK |
1 | // 2001-05-21 Benjamin Kosnik <bkoz@redhat.com> |
| 2 | ||
| 3 | // Copyright (C) 2001, 2002, 2003 Free Software Foundation, Inc. | |
| 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 | // 27.8.1.4 Overridden virtual functions | |
| 22 | ||
| 23 | #include <fstream> | |
| 24 | #include <testsuite_hooks.h> | |
| 25 | #include <testsuite_io.h> | |
| 26 | ||
| 27 | // @require@ %-*.tst %-*.txt | |
| 28 | // @diff@ %-*.tst %*.txt | |
| 29 | ||
| 30 | const char name_01[] = "sgetn.txt"; // file with data in it | |
| 31 | ||
| 32 | // Test overloaded virtual functions. | |
| 33 | void test05() | |
| 34 | { | |
| 35 | using namespace std; | |
| aecf642c | 36 | using namespace __gnu_test; |
| 46c4e5d6 BK |
37 | typedef filebuf::int_type int_type; |
| 38 | typedef filebuf::traits_type traits_type; | |
| 39 | ||
| 40 | bool test = true; | |
| 41 | ||
| 42 | streamsize strmsz_1, strmsz_2, strmsz_3; | |
| 43 | int i = 0, j = 0, k = 0; | |
| 44 | char carray1[13] = ""; | |
| 45 | char carray2[8192] = ""; | |
| 46 | int_type c1, c2, c3, c4; | |
| 47 | ||
| 48 | // streamsize sgetn(char_type *s, streamsize n) | |
| 49 | // streamsize xsgetn(char_type *s, streamsize n) | |
| 50 | // assign up to n chars to s from input sequence, indexing in_cur as | |
| 51 | // approp and returning the number of chars assigned | |
| 52 | ||
| 53 | // in | |
| 54 | { | |
| 55 | constraint_filebuf fb_01; | |
| 56 | fb_01.pubsetbuf(0, 0); | |
| 57 | fb_01.open(name_01, ios_base::in); | |
| 58 | VERIFY( fb_01.unbuffered() ); | |
| 59 | strmsz_1 = fb_01.in_avail(); | |
| 60 | strmsz_2 = fb_01.sgetn(carray1, 10); | |
| 61 | VERIFY( strmsz_2 == 10 ); | |
| 62 | strmsz_2 = fb_01.in_avail(); | |
| 63 | VERIFY( strmsz_1 > strmsz_2 ); | |
| 64 | c1 = fb_01.sgetc(); | |
| 65 | VERIFY( c1 == 'b' ); | |
| 66 | strmsz_1 = fb_01.in_avail(); // 8181 or 8250 depending on buffer | |
| 67 | strmsz_2 = fb_01.sgetn(carray2, 8181 + 5); | |
| 68 | VERIFY( 8181 == strmsz_2 - 5 ); | |
| 69 | c4 = fb_01.sgetc(); // buffer should have underflowed from above. | |
| 70 | VERIFY( c4 == 'h' ); | |
| 71 | strmsz_1 = fb_01.in_avail(); | |
| 72 | VERIFY( strmsz_1 > 0 ); | |
| 73 | strmsz_2 = fb_01.sgetn(carray2, 65 + 5); | |
| 74 | VERIFY( 65 == strmsz_2 ); // at the end of the actual file | |
| 75 | VERIFY( fb_01.unbuffered() ); | |
| 76 | } | |
| 77 | } | |
| 78 | ||
| 79 | main() | |
| 80 | { | |
| 81 | test05(); | |
| 82 | return 0; | |
| 83 | } |