78 lines
2.9 KiB
C++
78 lines
2.9 KiB
C++
//===----------------------------------------------------------------------===//
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//
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// The LLVM Compiler Infrastructure
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//
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// This file is dual licensed under the MIT and the University of Illinois Open
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// Source Licenses. See LICENSE.TXT for details.
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//
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//===----------------------------------------------------------------------===//
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// <sstream>
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// template <class charT, class traits = char_traits<charT>, class Allocator = allocator<charT> >
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// class basic_stringbuf
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// pos_type seekpos(pos_type sp,
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// ios_base::openmode which = ios_base::in | ios_base::out);
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#include <sstream>
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#include <cassert>
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int main()
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{
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{
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std::stringbuf sb("0123456789", std::ios_base::in);
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assert(sb.pubseekpos(3, std::ios_base::out) == -1);
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assert(sb.pubseekpos(3, std::ios_base::in | std::ios_base::out) == -1);
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assert(sb.pubseekpos(3, std::ios_base::in) == 3);
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assert(sb.sgetc() == '3');
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}
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{
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std::stringbuf sb("0123456789", std::ios_base::out);
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assert(sb.pubseekpos(3, std::ios_base::in) == -1);
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assert(sb.pubseekpos(3, std::ios_base::out | std::ios_base::in) == -1);
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assert(sb.pubseekpos(3, std::ios_base::out) == 3);
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assert(sb.sputc('a') == 'a');
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assert(sb.str() == "012a456789");
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}
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{
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std::stringbuf sb("0123456789");
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assert(sb.pubseekpos(3, std::ios_base::in) == 3);
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assert(sb.sgetc() == '3');
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assert(sb.pubseekpos(3, std::ios_base::out | std::ios_base::in) == 3);
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assert(sb.sgetc() == '3');
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assert(sb.sputc('a') == 'a');
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assert(sb.str() == "012a456789");
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assert(sb.pubseekpos(3, std::ios_base::out) == 3);
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assert(sb.sputc('3') == '3');
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assert(sb.str() == "0123456789");
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}
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{
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std::wstringbuf sb(L"0123456789", std::ios_base::in);
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assert(sb.pubseekpos(3, std::ios_base::out) == -1);
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assert(sb.pubseekpos(3, std::ios_base::in | std::ios_base::out) == -1);
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assert(sb.pubseekpos(3, std::ios_base::in) == 3);
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assert(sb.sgetc() == L'3');
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}
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{
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std::wstringbuf sb(L"0123456789", std::ios_base::out);
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assert(sb.pubseekpos(3, std::ios_base::in) == -1);
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assert(sb.pubseekpos(3, std::ios_base::out | std::ios_base::in) == -1);
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assert(sb.pubseekpos(3, std::ios_base::out) == 3);
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assert(sb.sputc(L'a') == L'a');
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assert(sb.str() == L"012a456789");
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}
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{
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std::wstringbuf sb(L"0123456789");
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assert(sb.pubseekpos(3, std::ios_base::in) == 3);
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assert(sb.sgetc() == L'3');
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assert(sb.pubseekpos(3, std::ios_base::out | std::ios_base::in) == 3);
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assert(sb.sgetc() == L'3');
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assert(sb.sputc(L'a') == L'a');
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assert(sb.str() == L"012a456789");
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assert(sb.pubseekpos(3, std::ios_base::out) == 3);
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assert(sb.sputc(L'3') == L'3');
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assert(sb.str() == L"0123456789");
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}
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}
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