1 //===----------------------------------------------------------------------===// 2 // 3 // The LLVM Compiler Infrastructure 4 // 5 // This file is dual licensed under the MIT and the University of Illinois Open 6 // Source Licenses. See LICENSE.TXT for details. 7 // 8 //===----------------------------------------------------------------------===// 9 10 // <sstream> 11 12 // template <class charT, class traits = char_traits<charT>, class Allocator = allocator<charT> > 13 // class basic_stringbuf 14 15 // pos_type seekoff(off_type off, ios_base::seekdir way, 16 // ios_base::openmode which = ios_base::in | ios_base::out); 17 18 #include <sstream> 19 #include <cassert> 20 21 int main() 22 { 23 { 24 std::stringbuf sb("0123456789", std::ios_base::in); 25 assert(sb.pubseekoff(3, std::ios_base::beg, std::ios_base::out) == -1); 26 assert(sb.pubseekoff(3, std::ios_base::cur, std::ios_base::out) == -1); 27 assert(sb.pubseekoff(-3, std::ios_base::end, std::ios_base::out) == -1); 28 assert(sb.pubseekoff(3, std::ios_base::beg, std::ios_base::in | std::ios_base::out) == -1); 29 assert(sb.pubseekoff(3, std::ios_base::cur, std::ios_base::in | std::ios_base::out) == -1); 30 assert(sb.pubseekoff(-3, std::ios_base::end, std::ios_base::in | std::ios_base::out) == -1); 31 assert(sb.pubseekoff(3, std::ios_base::beg, std::ios_base::in) == 3); 32 assert(sb.sgetc() == '3'); 33 assert(sb.pubseekoff(3, std::ios_base::cur, std::ios_base::in) == 6); 34 assert(sb.sgetc() == '6'); 35 assert(sb.pubseekoff(-3, std::ios_base::end, std::ios_base::in) == 7); 36 assert(sb.sgetc() == '7'); 37 } 38 { 39 std::stringbuf sb("0123456789", std::ios_base::out); 40 assert(sb.pubseekoff(3, std::ios_base::beg, std::ios_base::in) == -1); 41 assert(sb.pubseekoff(3, std::ios_base::cur, std::ios_base::in) == -1); 42 assert(sb.pubseekoff(-3, std::ios_base::end, std::ios_base::in) == -1); 43 assert(sb.pubseekoff(3, std::ios_base::beg, std::ios_base::out | std::ios_base::in) == -1); 44 assert(sb.pubseekoff(3, std::ios_base::cur, std::ios_base::out | std::ios_base::in) == -1); 45 assert(sb.pubseekoff(-3, std::ios_base::end, std::ios_base::out | std::ios_base::in) == -1); 46 assert(sb.pubseekoff(3, std::ios_base::beg, std::ios_base::out) == 3); 47 assert(sb.sputc('a') == 'a'); 48 assert(sb.str() == "012a456789"); 49 assert(sb.pubseekoff(3, std::ios_base::cur, std::ios_base::out) == 7); 50 assert(sb.sputc('b') == 'b'); 51 assert(sb.str() == "012a456b89"); 52 assert(sb.pubseekoff(-3, std::ios_base::end, std::ios_base::out) == 7); 53 assert(sb.sputc('c') == 'c'); 54 assert(sb.str() == "012a456c89"); 55 } 56 { 57 std::stringbuf sb("0123456789"); 58 assert(sb.pubseekoff(3, std::ios_base::beg, std::ios_base::in) == 3); 59 assert(sb.sgetc() == '3'); 60 assert(sb.pubseekoff(3, std::ios_base::cur, std::ios_base::in) == 6); 61 assert(sb.sgetc() == '6'); 62 assert(sb.pubseekoff(-3, std::ios_base::end, std::ios_base::in) == 7); 63 assert(sb.sgetc() == '7'); 64 assert(sb.pubseekoff(3, std::ios_base::beg, std::ios_base::out | std::ios_base::in) == 3); 65 assert(sb.sgetc() == '3'); 66 assert(sb.sputc('a') == 'a'); 67 assert(sb.str() == "012a456789"); 68 assert(sb.pubseekoff(3, std::ios_base::cur, std::ios_base::out | std::ios_base::in) == -1); 69 assert(sb.pubseekoff(-3, std::ios_base::end, std::ios_base::out | std::ios_base::in) == 7); 70 assert(sb.sgetc() == '7'); 71 assert(sb.sputc('c') == 'c'); 72 assert(sb.str() == "012a456c89"); 73 assert(sb.pubseekoff(3, std::ios_base::beg, std::ios_base::out) == 3); 74 assert(sb.sputc('3') == '3'); 75 assert(sb.str() == "0123456c89"); 76 assert(sb.pubseekoff(3, std::ios_base::cur, std::ios_base::out) == 7); 77 assert(sb.sputc('7') == '7'); 78 assert(sb.str() == "0123456789"); 79 assert(sb.pubseekoff(-3, std::ios_base::end, std::ios_base::out) == 7); 80 assert(sb.sputc('c') == 'c'); 81 assert(sb.str() == "0123456c89"); 82 } 83 { 84 std::wstringbuf sb(L"0123456789", std::ios_base::in); 85 assert(sb.pubseekoff(3, std::ios_base::beg, std::ios_base::out) == -1); 86 assert(sb.pubseekoff(3, std::ios_base::cur, std::ios_base::out) == -1); 87 assert(sb.pubseekoff(-3, std::ios_base::end, std::ios_base::out) == -1); 88 assert(sb.pubseekoff(3, std::ios_base::beg, std::ios_base::in | std::ios_base::out) == -1); 89 assert(sb.pubseekoff(3, std::ios_base::cur, std::ios_base::in | std::ios_base::out) == -1); 90 assert(sb.pubseekoff(-3, std::ios_base::end, std::ios_base::in | std::ios_base::out) == -1); 91 assert(sb.pubseekoff(3, std::ios_base::beg, std::ios_base::in) == 3); 92 assert(sb.sgetc() == L'3'); 93 assert(sb.pubseekoff(3, std::ios_base::cur, std::ios_base::in) == 6); 94 assert(sb.sgetc() == L'6'); 95 assert(sb.pubseekoff(-3, std::ios_base::end, std::ios_base::in) == 7); 96 assert(sb.sgetc() == L'7'); 97 } 98 { 99 std::wstringbuf sb(L"0123456789", std::ios_base::out); 100 assert(sb.pubseekoff(3, std::ios_base::beg, std::ios_base::in) == -1); 101 assert(sb.pubseekoff(3, std::ios_base::cur, std::ios_base::in) == -1); 102 assert(sb.pubseekoff(-3, std::ios_base::end, std::ios_base::in) == -1); 103 assert(sb.pubseekoff(3, std::ios_base::beg, std::ios_base::out | std::ios_base::in) == -1); 104 assert(sb.pubseekoff(3, std::ios_base::cur, std::ios_base::out | std::ios_base::in) == -1); 105 assert(sb.pubseekoff(-3, std::ios_base::end, std::ios_base::out | std::ios_base::in) == -1); 106 assert(sb.pubseekoff(3, std::ios_base::beg, std::ios_base::out) == 3); 107 assert(sb.sputc(L'a') == L'a'); 108 assert(sb.str() == L"012a456789"); 109 assert(sb.pubseekoff(3, std::ios_base::cur, std::ios_base::out) == 7); 110 assert(sb.sputc(L'b') == L'b'); 111 assert(sb.str() == L"012a456b89"); 112 assert(sb.pubseekoff(-3, std::ios_base::end, std::ios_base::out) == 7); 113 assert(sb.sputc(L'c') == L'c'); 114 assert(sb.str() == L"012a456c89"); 115 } 116 { 117 std::wstringbuf sb(L"0123456789"); 118 assert(sb.pubseekoff(3, std::ios_base::beg, std::ios_base::in) == 3); 119 assert(sb.sgetc() == L'3'); 120 assert(sb.pubseekoff(3, std::ios_base::cur, std::ios_base::in) == 6); 121 assert(sb.sgetc() == L'6'); 122 assert(sb.pubseekoff(-3, std::ios_base::end, std::ios_base::in) == 7); 123 assert(sb.sgetc() == L'7'); 124 assert(sb.pubseekoff(3, std::ios_base::beg, std::ios_base::out | std::ios_base::in) == 3); 125 assert(sb.sgetc() == L'3'); 126 assert(sb.sputc(L'a') == L'a'); 127 assert(sb.str() == L"012a456789"); 128 assert(sb.pubseekoff(3, std::ios_base::cur, std::ios_base::out | std::ios_base::in) == -1); 129 assert(sb.pubseekoff(-3, std::ios_base::end, std::ios_base::out | std::ios_base::in) == 7); 130 assert(sb.sgetc() == L'7'); 131 assert(sb.sputc(L'c') == L'c'); 132 assert(sb.str() == L"012a456c89"); 133 assert(sb.pubseekoff(3, std::ios_base::beg, std::ios_base::out) == 3); 134 assert(sb.sputc(L'3') == L'3'); 135 assert(sb.str() == L"0123456c89"); 136 assert(sb.pubseekoff(3, std::ios_base::cur, std::ios_base::out) == 7); 137 assert(sb.sputc(L'7') == L'7'); 138 assert(sb.str() == L"0123456789"); 139 assert(sb.pubseekoff(-3, std::ios_base::end, std::ios_base::out) == 7); 140 assert(sb.sputc(L'c') == L'c'); 141 assert(sb.str() == L"0123456c89"); 142 } 143 } 144
