1 // 2003-05-01 Petur Runolfsson <peturr02@ru.is>
2
3 // Copyright (C) 2003-2021 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 3, 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 COPYING3. If not see
18 // <http://www.gnu.org/licenses/>.
19
20 // { dg-require-fileio "" }
21
22 #include <ext/stdio_sync_filebuf.h>
23 #include <cstring>
24 #include <testsuite_hooks.h>
25
test01()26 void test01()
27 {
28 using namespace std;
29
30 const char* c_lit = "black pearl jasmine tea";
31 unsigned size = strlen(c_lit);
32 const char* name = "stdiobuf-1.txt";
33
34 FILE* fout = fopen(name, "w");
35 VERIFY( fwrite(c_lit, 1, size, fout) == size );
36 fclose(fout);
37
38 FILE* fin = fopen(name, "r");
39 __gnu_cxx::stdio_sync_filebuf<char> sbuf(fin);
40
41 VERIFY( sbuf.sgetc() == c_lit[0] );
42 VERIFY( getc(fin) == c_lit[0] );
43 VERIFY( sbuf.sgetc() == c_lit[1] );
44 VERIFY( sbuf.sbumpc() == c_lit[1] );
45 VERIFY( ungetc('Z', fin) == 'Z' );
46 VERIFY( sbuf.sbumpc() == 'Z' );
47 VERIFY( getc(fin) == c_lit[2] );
48 VERIFY( sbuf.sputbackc('X') == 'X' );
49 VERIFY( getc(fin) == 'X' );
50
51 char buf[5];
52 memset(buf, 'x', 5);
53 VERIFY( sbuf.sgetn(buf, 5) == 5 );
54 VERIFY( !memcmp(buf, c_lit + 3, 5) );
55 VERIFY( getc(fin) == c_lit[8] );
56
57 fclose(fin);
58 }
59
main()60 int main ()
61 {
62 test01();
63 return 0;
64 }
65