aa20444a4f
git-svn-id: https://llvm.org/svn/llvm-project/libcxx/trunk@111756 91177308-0d34-0410-b5e6-96231b3b80d8
58 lines
2.6 KiB
C++
58 lines
2.6 KiB
C++
//===----------------------------------------------------------------------===//
|
|
//
|
|
// The LLVM Compiler Infrastructure
|
|
//
|
|
// This file is distributed under the University of Illinois Open Source
|
|
// License. See LICENSE.TXT for details.
|
|
//
|
|
//===----------------------------------------------------------------------===//
|
|
|
|
// <strstream>
|
|
|
|
// class strstreambuf
|
|
|
|
// pos_type seekoff(off_type off, ios_base::seekdir way,
|
|
// ios_base::openmode which = ios_base::in | ios_base::out);
|
|
|
|
#include <strstream>
|
|
#include <cassert>
|
|
|
|
int main()
|
|
{
|
|
{
|
|
char buf[] = "0123456789";
|
|
std::strstreambuf sb(buf, 0);
|
|
assert(sb.pubseekoff(3, std::ios_base::beg, std::ios_base::out) == -1);
|
|
assert(sb.pubseekoff(3, std::ios_base::cur, std::ios_base::out) == -1);
|
|
assert(sb.pubseekoff(-3, std::ios_base::end, std::ios_base::out) == -1);
|
|
assert(sb.pubseekoff(3, std::ios_base::beg, std::ios_base::in | std::ios_base::out) == -1);
|
|
assert(sb.pubseekoff(3, std::ios_base::cur, std::ios_base::in | std::ios_base::out) == -1);
|
|
assert(sb.pubseekoff(-3, std::ios_base::end, std::ios_base::in | std::ios_base::out) == -1);
|
|
assert(sb.pubseekoff(3, std::ios_base::beg, std::ios_base::in) == 3);
|
|
assert(sb.sgetc() == '3');
|
|
assert(sb.pubseekoff(3, std::ios_base::cur, std::ios_base::in) == 6);
|
|
assert(sb.sgetc() == '6');
|
|
assert(sb.pubseekoff(-3, std::ios_base::end, std::ios_base::in) == 7);
|
|
assert(sb.sgetc() == '7');
|
|
}
|
|
{
|
|
char buf[] = "0123456789";
|
|
std::strstreambuf sb(buf, 0, buf);
|
|
assert(sb.pubseekoff(3, std::ios_base::beg, std::ios_base::in) == 3);
|
|
assert(sb.pubseekoff(3, std::ios_base::cur, std::ios_base::in) == 6);
|
|
assert(sb.pubseekoff(-3, std::ios_base::end, std::ios_base::in) == 7);
|
|
assert(sb.pubseekoff(3, std::ios_base::beg, std::ios_base::out | std::ios_base::in) == 3);
|
|
assert(sb.pubseekoff(3, std::ios_base::cur, std::ios_base::out | std::ios_base::in) == -1);
|
|
assert(sb.pubseekoff(-3, std::ios_base::end, std::ios_base::out | std::ios_base::in) == 7);
|
|
assert(sb.pubseekoff(3, std::ios_base::beg, std::ios_base::out) == 3);
|
|
assert(sb.sputc('a') == 'a');
|
|
assert(sb.str() == std::string("012a456789"));
|
|
assert(sb.pubseekoff(3, std::ios_base::cur, std::ios_base::out) == 7);
|
|
assert(sb.sputc('b') == 'b');
|
|
assert(sb.str() == std::string("012a456b89"));
|
|
assert(sb.pubseekoff(-3, std::ios_base::end, std::ios_base::out) == 7);
|
|
assert(sb.sputc('c') == 'c');
|
|
assert(sb.str() == std::string("012a456c89"));
|
|
}
|
|
}
|