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4680 | right-hear | 1 | // Copyright (C) 1997, 1998, 1999, 2000, 2001 Free Software Foundation, Inc. |
2 | // |
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3 | // This file is part of the GNU ISO C++ Library. This library is free |
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4 | // software; you can redistribute it and/or modify it under the |
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5 | // terms of the GNU General Public License as published by the |
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6 | // Free Software Foundation; either version 2, or (at your option) |
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7 | // any later version. |
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8 | |||
9 | // This library is distributed in the hope that it will be useful, |
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10 | // but WITHOUT ANY WARRANTY; without even the implied warranty of |
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11 | // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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12 | // GNU General Public License for more details. |
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13 | |||
14 | // You should have received a copy of the GNU General Public License along |
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15 | // with this library; see the file COPYING. If not, write to the Free |
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16 | // Software Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307, |
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17 | // USA. |
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18 | |||
19 | // As a special exception, you may use this file as part of a free software |
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20 | // library without restriction. Specifically, if other files instantiate |
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21 | // templates or use macros or inline functions from this file, or you compile |
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22 | // this file and link it with other files to produce an executable, this |
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23 | // file does not by itself cause the resulting executable to be covered by |
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24 | // the GNU General Public License. This exception does not however |
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25 | // invalidate any other reasons why the executable file might be covered by |
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26 | // the GNU General Public License. |
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27 | |||
28 | // |
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29 | // ISO C++ 14882: 27.6.2 Output streams |
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30 | // |
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31 | |||
32 | #include |
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33 | #include |
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34 | |||
35 | namespace std |
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36 | { |
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37 | template |
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38 | basic_istream<_CharT, _Traits>::sentry:: |
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39 | sentry(basic_istream<_CharT, _Traits>& __in, bool __noskipws) |
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40 | { |
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41 | if (__in.good()) |
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42 | { |
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43 | if (__in.tie()) |
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44 | __in.tie()->flush(); |
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45 | if (!__noskipws && (__in.flags() & ios_base::skipws)) |
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46 | { |
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47 | const __int_type __eof = traits_type::eof(); |
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48 | const __ctype_type* __ctype = __in._M_get_fctype_ios(); |
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49 | __streambuf_type* __sb = __in.rdbuf(); |
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50 | __int_type __c = __sb->sgetc(); |
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51 | |||
52 | while (__c != __eof && __ctype->is(ctype_base::space, __c)) |
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53 | __c = __sb->snextc(); |
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54 | |||
55 | #ifdef _GLIBCPP_RESOLVE_LIB_DEFECTS |
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56 | //195. Should basic_istream::sentry's constructor ever set eofbit? |
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57 | if (__c == __eof) |
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58 | __in.setstate(ios_base::eofbit); |
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59 | #endif |
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60 | } |
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61 | } |
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62 | |||
63 | if (__in.good()) |
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64 | _M_ok = true; |
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65 | else |
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66 | { |
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67 | _M_ok = false; |
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68 | __in.setstate(ios_base::failbit); |
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69 | } |
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70 | } |
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71 | |||
72 | template |
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73 | basic_istream<_CharT, _Traits>& |
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74 | basic_istream<_CharT, _Traits>:: |
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75 | operator>>(__istream_type& (*__pf)(__istream_type&)) |
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76 | { |
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77 | __pf(*this); |
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78 | return *this; |
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79 | } |
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80 | |||
81 | template |
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82 | basic_istream<_CharT, _Traits>& |
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83 | basic_istream<_CharT, _Traits>:: |
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84 | operator>>(__ios_type& (*__pf)(__ios_type&)) |
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85 | { |
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86 | __pf(*this); |
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87 | return *this; |
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88 | } |
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89 | |||
90 | template |
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91 | basic_istream<_CharT, _Traits>& |
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92 | basic_istream<_CharT, _Traits>:: |
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93 | operator>>(ios_base& (*__pf)(ios_base&)) |
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94 | { |
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95 | __pf(*this); |
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96 | return *this; |
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97 | } |
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98 | |||
99 | template |
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100 | basic_istream<_CharT, _Traits>& |
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101 | basic_istream<_CharT, _Traits>:: |
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102 | operator>>(bool& __n) |
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103 | { |
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104 | sentry __cerb(*this, false); |
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105 | if (__cerb) |
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106 | { |
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107 | try |
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108 | { |
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109 | ios_base::iostate __err = ios_base::iostate(ios_base::goodbit); |
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110 | if (_M_check_facet(_M_fnumget)) |
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111 | _M_fnumget->get(*this, 0, *this, __err, __n); |
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112 | this->setstate(__err); |
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113 | } |
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114 | catch(exception& __fail) |
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115 | { |
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116 | // 27.6.1.2.1 Common requirements. |
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117 | // Turn this on without causing an ios::failure to be thrown. |
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118 | this->setstate(ios_base::badbit); |
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119 | if ((this->exceptions() & ios_base::badbit) != 0) |
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120 | __throw_exception_again; |
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121 | } |
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122 | } |
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123 | return *this; |
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124 | } |
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125 | |||
126 | template |
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127 | basic_istream<_CharT, _Traits>& |
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128 | basic_istream<_CharT, _Traits>:: |
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129 | operator>>(short& __n) |
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130 | { |
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131 | sentry __cerb(*this, false); |
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132 | if (__cerb) |
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133 | { |
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134 | try |
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135 | { |
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136 | ios_base::iostate __err = ios_base::iostate(ios_base::goodbit); |
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137 | if (_M_check_facet(_M_fnumget)) |
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138 | _M_fnumget->get(*this, 0, *this, __err, __n); |
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139 | this->setstate(__err); |
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140 | } |
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141 | catch(exception& __fail) |
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142 | { |
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143 | // 27.6.1.2.1 Common requirements. |
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144 | // Turn this on without causing an ios::failure to be thrown. |
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145 | this->setstate(ios_base::badbit); |
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146 | if ((this->exceptions() & ios_base::badbit) != 0) |
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147 | __throw_exception_again; |
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148 | } |
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149 | } |
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150 | return *this; |
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151 | } |
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152 | |||
153 | template |
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154 | basic_istream<_CharT, _Traits>& |
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155 | basic_istream<_CharT, _Traits>:: |
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156 | operator>>(unsigned short& __n) |
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157 | { |
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158 | sentry __cerb(*this, false); |
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159 | if (__cerb) |
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160 | { |
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161 | try |
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162 | { |
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163 | ios_base::iostate __err = ios_base::iostate(ios_base::goodbit); |
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164 | if (_M_check_facet(_M_fnumget)) |
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165 | _M_fnumget->get(*this, 0, *this, __err, __n); |
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166 | this->setstate(__err); |
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167 | } |
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168 | catch(exception& __fail) |
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169 | { |
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170 | // 27.6.1.2.1 Common requirements. |
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171 | // Turn this on without causing an ios::failure to be thrown. |
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172 | this->setstate(ios_base::badbit); |
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173 | if ((this->exceptions() & ios_base::badbit) != 0) |
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174 | __throw_exception_again; |
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175 | } |
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176 | } |
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177 | return *this; |
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178 | } |
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179 | |||
180 | template |
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181 | basic_istream<_CharT, _Traits>& |
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182 | basic_istream<_CharT, _Traits>:: |
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183 | operator>>(int& __n) |
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184 | { |
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185 | sentry __cerb(*this, false); |
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186 | if (__cerb) |
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187 | { |
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188 | try |
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189 | { |
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190 | ios_base::iostate __err = ios_base::iostate(ios_base::goodbit); |
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191 | if (_M_check_facet(_M_fnumget)) |
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192 | _M_fnumget->get(*this, 0, *this, __err, __n); |
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193 | this->setstate(__err); |
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194 | } |
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195 | catch(exception& __fail) |
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196 | { |
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197 | // 27.6.1.2.1 Common requirements. |
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198 | // Turn this on without causing an ios::failure to be thrown. |
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199 | this->setstate(ios_base::badbit); |
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200 | if ((this->exceptions() & ios_base::badbit) != 0) |
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201 | __throw_exception_again; |
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202 | } |
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203 | } |
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204 | return *this; |
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205 | } |
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206 | |||
207 | template |
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208 | basic_istream<_CharT, _Traits>& |
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209 | basic_istream<_CharT, _Traits>:: |
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210 | operator>>(unsigned int& __n) |
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211 | { |
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212 | sentry __cerb(*this, false); |
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213 | if (__cerb) |
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214 | { |
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215 | try |
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216 | { |
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217 | ios_base::iostate __err = ios_base::iostate(ios_base::goodbit); |
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218 | if (_M_check_facet(_M_fnumget)) |
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219 | _M_fnumget->get(*this, 0, *this, __err, __n); |
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220 | this->setstate(__err); |
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221 | } |
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222 | catch(exception& __fail) |
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223 | { |
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224 | // 27.6.1.2.1 Common requirements. |
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225 | // Turn this on without causing an ios::failure to be thrown. |
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226 | this->setstate(ios_base::badbit); |
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227 | if ((this->exceptions() & ios_base::badbit) != 0) |
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228 | __throw_exception_again; |
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229 | } |
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230 | } |
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231 | return *this; |
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232 | } |
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233 | |||
234 | template |
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235 | basic_istream<_CharT, _Traits>& |
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236 | basic_istream<_CharT, _Traits>:: |
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237 | operator>>(long& __n) |
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238 | { |
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239 | sentry __cerb(*this, false); |
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240 | if (__cerb) |
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241 | { |
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242 | try |
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243 | { |
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244 | ios_base::iostate __err = ios_base::iostate(ios_base::goodbit); |
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245 | if (_M_check_facet(_M_fnumget)) |
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246 | _M_fnumget->get(*this, 0, *this, __err, __n); |
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247 | this->setstate(__err); |
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248 | } |
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249 | catch(exception& __fail) |
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250 | { |
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251 | // 27.6.1.2.1 Common requirements. |
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252 | // Turn this on without causing an ios::failure to be thrown. |
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253 | this->setstate(ios_base::badbit); |
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254 | if ((this->exceptions() & ios_base::badbit) != 0) |
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255 | __throw_exception_again; |
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256 | } |
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257 | } |
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258 | return *this; |
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259 | } |
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260 | |||
261 | template |
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262 | basic_istream<_CharT, _Traits>& |
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263 | basic_istream<_CharT, _Traits>:: |
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264 | operator>>(unsigned long& __n) |
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265 | { |
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266 | sentry __cerb(*this, false); |
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267 | if (__cerb) |
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268 | { |
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269 | try |
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270 | { |
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271 | ios_base::iostate __err = ios_base::iostate(ios_base::goodbit); |
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272 | if (_M_check_facet(_M_fnumget)) |
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273 | _M_fnumget->get(*this, 0, *this, __err, __n); |
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274 | this->setstate(__err); |
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275 | } |
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276 | catch(exception& __fail) |
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277 | { |
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278 | // 27.6.1.2.1 Common requirements. |
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279 | // Turn this on without causing an ios::failure to be thrown. |
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280 | this->setstate(ios_base::badbit); |
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281 | if ((this->exceptions() & ios_base::badbit) != 0) |
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282 | __throw_exception_again; |
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283 | } |
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284 | } |
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285 | return *this; |
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286 | } |
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287 | |||
288 | #ifdef _GLIBCPP_USE_LONG_LONG |
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289 | template |
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290 | basic_istream<_CharT, _Traits>& |
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291 | basic_istream<_CharT, _Traits>:: |
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292 | operator>>(long long& __n) |
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293 | { |
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294 | sentry __cerb(*this, false); |
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295 | if (__cerb) |
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296 | { |
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297 | try |
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298 | { |
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299 | ios_base::iostate __err = ios_base::iostate(ios_base::goodbit); |
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300 | if (_M_check_facet(_M_fnumget)) |
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301 | _M_fnumget->get(*this, 0, *this, __err, __n); |
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302 | this->setstate(__err); |
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303 | } |
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304 | catch(exception& __fail) |
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305 | { |
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306 | // 27.6.1.2.1 Common requirements. |
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307 | // Turn this on without causing an ios::failure to be thrown. |
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308 | this->setstate(ios_base::badbit); |
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309 | if ((this->exceptions() & ios_base::badbit) != 0) |
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310 | __throw_exception_again; |
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311 | } |
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312 | } |
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313 | return *this; |
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314 | } |
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315 | |||
316 | template |
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317 | basic_istream<_CharT, _Traits>& |
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318 | basic_istream<_CharT, _Traits>:: |
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319 | operator>>(unsigned long long& __n) |
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320 | { |
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321 | sentry __cerb(*this, false); |
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322 | if (__cerb) |
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323 | { |
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324 | try |
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325 | { |
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326 | ios_base::iostate __err = ios_base::iostate(ios_base::goodbit); |
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327 | if (_M_check_facet(_M_fnumget)) |
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328 | _M_fnumget->get(*this, 0, *this, __err, __n); |
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329 | this->setstate(__err); |
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330 | } |
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331 | catch(exception& __fail) |
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332 | { |
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333 | // 27.6.1.2.1 Common requirements. |
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334 | // Turn this on without causing an ios::failure to be thrown. |
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335 | this->setstate(ios_base::badbit); |
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336 | if ((this->exceptions() & ios_base::badbit) != 0) |
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337 | __throw_exception_again; |
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338 | } |
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339 | } |
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340 | return *this; |
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341 | } |
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342 | #endif |
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343 | |||
344 | template |
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345 | basic_istream<_CharT, _Traits>& |
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346 | basic_istream<_CharT, _Traits>:: |
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347 | operator>>(float& __n) |
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348 | { |
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349 | sentry __cerb(*this, false); |
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350 | if (__cerb) |
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351 | { |
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352 | try |
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353 | { |
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354 | ios_base::iostate __err = ios_base::iostate(ios_base::goodbit); |
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355 | if (_M_check_facet(_M_fnumget)) |
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356 | _M_fnumget->get(*this, 0, *this, __err, __n); |
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357 | this->setstate(__err); |
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358 | } |
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359 | catch(exception& __fail) |
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360 | { |
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361 | // 27.6.1.2.1 Common requirements. |
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362 | // Turn this on without causing an ios::failure to be thrown. |
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363 | this->setstate(ios_base::badbit); |
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364 | if ((this->exceptions() & ios_base::badbit) != 0) |
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365 | __throw_exception_again; |
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366 | } |
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367 | } |
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368 | return *this; |
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369 | } |
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370 | |||
371 | template |
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372 | basic_istream<_CharT, _Traits>& |
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373 | basic_istream<_CharT, _Traits>:: |
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374 | operator>>(double& __n) |
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375 | { |
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376 | sentry __cerb(*this, false); |
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377 | if (__cerb) |
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378 | { |
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379 | try |
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380 | { |
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381 | ios_base::iostate __err = ios_base::iostate(ios_base::goodbit); |
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382 | if (_M_check_facet(_M_fnumget)) |
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383 | _M_fnumget->get(*this, 0, *this, __err, __n); |
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384 | this->setstate(__err); |
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385 | } |
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386 | catch(exception& __fail) |
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387 | { |
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388 | // 27.6.1.2.1 Common requirements. |
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389 | // Turn this on without causing an ios::failure to be thrown. |
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390 | this->setstate(ios_base::badbit); |
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391 | if ((this->exceptions() & ios_base::badbit) != 0) |
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392 | __throw_exception_again; |
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393 | } |
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394 | } |
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395 | return *this; |
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396 | } |
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397 | |||
398 | template |
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399 | basic_istream<_CharT, _Traits>& |
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400 | basic_istream<_CharT, _Traits>:: |
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401 | operator>>(long double& __n) |
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402 | { |
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403 | sentry __cerb(*this, false); |
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404 | if (__cerb) |
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405 | { |
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406 | try |
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407 | { |
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408 | ios_base::iostate __err = ios_base::iostate(ios_base::goodbit); |
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409 | if (_M_check_facet(_M_fnumget)) |
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410 | _M_fnumget->get(*this, 0, *this, __err, __n); |
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411 | this->setstate(__err); |
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412 | } |
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413 | catch(exception& __fail) |
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414 | { |
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415 | // 27.6.1.2.1 Common requirements. |
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416 | // Turn this on without causing an ios::failure to be thrown. |
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417 | this->setstate(ios_base::badbit); |
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418 | if ((this->exceptions() & ios_base::badbit) != 0) |
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419 | __throw_exception_again; |
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420 | } |
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421 | } |
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422 | return *this; |
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423 | } |
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424 | |||
425 | template |
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426 | basic_istream<_CharT, _Traits>& |
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427 | basic_istream<_CharT, _Traits>:: |
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428 | operator>>(void*& __n) |
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429 | { |
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430 | sentry __cerb(*this, false); |
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431 | if (__cerb) |
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432 | { |
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433 | try |
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434 | { |
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435 | ios_base::iostate __err = ios_base::iostate(ios_base::goodbit); |
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436 | if (_M_check_facet(_M_fnumget)) |
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437 | _M_fnumget->get(*this, 0, *this, __err, __n); |
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438 | this->setstate(__err); |
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439 | } |
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440 | catch(exception& __fail) |
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441 | { |
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442 | // 27.6.1.2.1 Common requirements. |
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443 | // Turn this on without causing an ios::failure to be thrown. |
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444 | this->setstate(ios_base::badbit); |
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445 | if ((this->exceptions() & ios_base::badbit) != 0) |
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446 | __throw_exception_again; |
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447 | } |
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448 | } |
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449 | return *this; |
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450 | } |
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451 | |||
452 | template |
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453 | basic_istream<_CharT, _Traits>& |
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454 | basic_istream<_CharT, _Traits>:: |
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455 | operator>>(__streambuf_type* __sbout) |
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456 | { |
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457 | streamsize __xtrct = 0; |
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458 | __streambuf_type* __sbin = this->rdbuf(); |
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459 | sentry __cerb(*this, false); |
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460 | if (__sbout && __cerb) |
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461 | __xtrct = __copy_streambufs(*this, __sbin, __sbout); |
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462 | if (!__sbout || !__xtrct) |
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463 | this->setstate(ios_base::failbit); |
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464 | return *this; |
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465 | } |
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466 | |||
467 | template |
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468 | basic_istream<_CharT, _Traits>::int_type |
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469 | basic_istream<_CharT, _Traits>:: |
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470 | get(void) |
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471 | { |
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472 | const int_type __eof = traits_type::eof(); |
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473 | int_type __c = __eof; |
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474 | _M_gcount = 0; |
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475 | sentry __cerb(*this, true); |
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476 | if (__cerb) |
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477 | { |
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478 | try |
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479 | { |
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480 | __c = this->rdbuf()->sbumpc(); |
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481 | // 27.6.1.1 paragraph 3 |
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482 | if (__c != __eof) |
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483 | _M_gcount = 1; |
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484 | else |
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485 | this->setstate(ios_base::eofbit | ios_base::failbit); |
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486 | } |
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487 | catch(exception& __fail) |
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488 | { |
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489 | // 27.6.1.3 paragraph 1 |
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490 | // Turn this on without causing an ios::failure to be thrown. |
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491 | this->setstate(ios_base::badbit); |
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492 | if ((this->exceptions() & ios_base::badbit) != 0) |
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493 | __throw_exception_again; |
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494 | } |
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495 | } |
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496 | return __c; |
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497 | } |
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498 | |||
499 | template |
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500 | basic_istream<_CharT, _Traits>& |
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501 | basic_istream<_CharT, _Traits>:: |
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502 | get(char_type& __c) |
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503 | { |
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504 | _M_gcount = 0; |
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505 | sentry __cerb(*this, true); |
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506 | if (__cerb) |
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507 | { |
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508 | try |
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509 | { |
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510 | const int_type __eof = traits_type::eof(); |
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511 | int_type __bufval = this->rdbuf()->sbumpc(); |
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512 | // 27.6.1.1 paragraph 3 |
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513 | if (__bufval != __eof) |
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514 | { |
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515 | _M_gcount = 1; |
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516 | __c = traits_type::to_char_type(__bufval); |
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517 | } |
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518 | else |
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519 | this->setstate(ios_base::eofbit | ios_base::failbit); |
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520 | } |
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521 | catch(exception& __fail) |
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522 | { |
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523 | // 27.6.1.3 paragraph 1 |
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524 | // Turn this on without causing an ios::failure to be thrown. |
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525 | this->setstate(ios_base::badbit); |
||
526 | if ((this->exceptions() & ios_base::badbit) != 0) |
||
527 | __throw_exception_again; |
||
528 | } |
||
529 | } |
||
530 | return *this; |
||
531 | } |
||
532 | |||
533 | template |
||
534 | basic_istream<_CharT, _Traits>& |
||
535 | basic_istream<_CharT, _Traits>:: |
||
536 | get(char_type* __s, streamsize __n, char_type __delim) |
||
537 | { |
||
538 | _M_gcount = 0; |
||
539 | sentry __cerb(*this, true); |
||
540 | if (__cerb && __n > 1) |
||
541 | { |
||
542 | try |
||
543 | { |
||
544 | const int_type __idelim = traits_type::to_int_type(__delim); |
||
545 | const int_type __eof = traits_type::eof(); |
||
546 | __streambuf_type* __sb = this->rdbuf(); |
||
547 | int_type __c = __sb->sbumpc(); |
||
548 | bool __testdelim = __c == __idelim; |
||
549 | bool __testeof = __c == __eof; |
||
550 | |||
551 | while (_M_gcount < __n - 1 && !__testeof && !__testdelim) |
||
552 | { |
||
553 | *__s++ = traits_type::to_char_type(__c); |
||
554 | ++_M_gcount; |
||
555 | __c = __sb->sbumpc(); |
||
556 | __testeof = __c == __eof; |
||
557 | __testdelim = __c == __idelim; |
||
558 | } |
||
559 | if (__testdelim || _M_gcount == __n - 1) |
||
560 | __sb->sputbackc(__c); |
||
561 | if (__testeof) |
||
562 | this->setstate(ios_base::eofbit); |
||
563 | } |
||
564 | catch(exception& __fail) |
||
565 | { |
||
566 | // 27.6.1.3 paragraph 1 |
||
567 | // Turn this on without causing an ios::failure to be thrown. |
||
568 | this->setstate(ios_base::badbit); |
||
569 | if ((this->exceptions() & ios_base::badbit) != 0) |
||
570 | __throw_exception_again; |
||
571 | } |
||
572 | } |
||
573 | *__s = char_type(); |
||
574 | if (!_M_gcount) |
||
575 | this->setstate(ios_base::failbit); |
||
576 | return *this; |
||
577 | } |
||
578 | |||
579 | template |
||
580 | basic_istream<_CharT, _Traits>& |
||
581 | basic_istream<_CharT, _Traits>:: |
||
582 | get(__streambuf_type& __sb, char_type __delim) |
||
583 | { |
||
584 | _M_gcount = 0; |
||
585 | sentry __cerb(*this, true); |
||
586 | if (__cerb) |
||
587 | { |
||
588 | int_type __c; |
||
589 | __streambuf_type* __this_sb = this->rdbuf(); |
||
590 | try |
||
591 | { |
||
592 | const int_type __idelim = traits_type::to_int_type(__delim); |
||
593 | const int_type __eof = traits_type::eof(); |
||
594 | __c = __this_sb->sbumpc(); |
||
595 | bool __testdelim = __c == __idelim; |
||
596 | bool __testeof = __c == __eof; |
||
597 | bool __testput = true; |
||
598 | |||
599 | while (!__testeof && !__testdelim |
||
600 | && (__testput = __sb.sputc(traits_type::to_char_type(__c)) |
||
601 | != __eof)) |
||
602 | { |
||
603 | ++_M_gcount; |
||
604 | __c = __this_sb->sbumpc(); |
||
605 | __testeof = __c == __eof; |
||
606 | __testdelim = __c == __idelim; |
||
607 | } |
||
608 | if (__testdelim || !__testput) |
||
609 | __this_sb->sputbackc(traits_type::to_char_type(__c)); |
||
610 | if (__testeof) |
||
611 | this->setstate(ios_base::eofbit); |
||
612 | } |
||
613 | catch(exception& __fail) |
||
614 | { |
||
615 | // Exception may result from sputc->overflow. |
||
616 | __this_sb->sputbackc(traits_type::to_char_type(__c)); |
||
617 | } |
||
618 | } |
||
619 | if (!_M_gcount) |
||
620 | this->setstate(ios_base::failbit); |
||
621 | return *this; |
||
622 | } |
||
623 | |||
624 | template |
||
625 | basic_istream<_CharT, _Traits>& |
||
626 | basic_istream<_CharT, _Traits>:: |
||
627 | getline(char_type* __s, streamsize __n, char_type __delim) |
||
628 | { |
||
629 | _M_gcount = 0; |
||
630 | sentry __cerb(*this, true); |
||
631 | if (__cerb) |
||
632 | { |
||
633 | try |
||
634 | { |
||
635 | __streambuf_type* __sb = this->rdbuf(); |
||
636 | int_type __c = __sb->sbumpc(); |
||
637 | ++_M_gcount; |
||
638 | const int_type __idelim = traits_type::to_int_type(__delim); |
||
639 | const int_type __eof = traits_type::eof(); |
||
640 | bool __testdelim = __c == __idelim; |
||
641 | bool __testeof = __c == __eof; |
||
642 | |||
643 | while (_M_gcount < __n && !__testeof && !__testdelim) |
||
644 | { |
||
645 | *__s++ = traits_type::to_char_type(__c); |
||
646 | __c = __sb->sbumpc(); |
||
647 | ++_M_gcount; |
||
648 | __testeof = __c == __eof; |
||
649 | __testdelim = __c == __idelim; |
||
650 | } |
||
651 | |||
652 | if (__testeof) |
||
653 | { |
||
654 | --_M_gcount; |
||
655 | this->setstate(ios_base::eofbit); |
||
656 | } |
||
657 | else if (!__testdelim) |
||
658 | { |
||
659 | --_M_gcount; |
||
660 | __sb->sputbackc(traits_type::to_char_type(__c)); |
||
661 | this->setstate(ios_base::failbit); |
||
662 | } |
||
663 | } |
||
664 | catch(exception& __fail) |
||
665 | { |
||
666 | // 27.6.1.3 paragraph 1 |
||
667 | // Turn this on without causing an ios::failure to be thrown. |
||
668 | this->setstate(ios_base::badbit); |
||
669 | if ((this->exceptions() & ios_base::badbit) != 0) |
||
670 | __throw_exception_again; |
||
671 | } |
||
672 | } |
||
673 | *__s = char_type(); |
||
674 | if (!_M_gcount) |
||
675 | this->setstate(ios_base::failbit); |
||
676 | return *this; |
||
677 | } |
||
678 | |||
679 | template |
||
680 | basic_istream<_CharT, _Traits>& |
||
681 | basic_istream<_CharT, _Traits>:: |
||
682 | ignore(streamsize __n, int_type __delim) |
||
683 | { |
||
684 | _M_gcount = 0; |
||
685 | sentry __cerb(*this, true); |
||
686 | if (__cerb && __n > 0) |
||
687 | { |
||
688 | try |
||
689 | { |
||
690 | const int_type __idelim = traits_type::to_int_type(__delim); |
||
691 | const int_type __eof = traits_type::eof(); |
||
692 | __streambuf_type* __sb = this->rdbuf(); |
||
693 | int_type __c = __sb->sbumpc(); |
||
694 | bool __testdelim = __c == __idelim; |
||
695 | bool __testeof = __c == __eof; |
||
696 | |||
697 | __n = min(__n, numeric_limits |
||
698 | while (_M_gcount < __n - 1 && !__testeof && !__testdelim) |
||
699 | { |
||
700 | ++_M_gcount; |
||
701 | __c = __sb->sbumpc(); |
||
702 | __testeof = __c == __eof; |
||
703 | __testdelim = __c == __idelim; |
||
704 | } |
||
705 | if ((_M_gcount == __n - 1 && !__testeof) || __testdelim) |
||
706 | ++_M_gcount; |
||
707 | if (__testeof) |
||
708 | this->setstate(ios_base::eofbit); |
||
709 | } |
||
710 | catch(exception& __fail) |
||
711 | { |
||
712 | // 27.6.1.3 paragraph 1 |
||
713 | // Turn this on without causing an ios::failure to be thrown. |
||
714 | this->setstate(ios_base::badbit); |
||
715 | if ((this->exceptions() & ios_base::badbit) != 0) |
||
716 | __throw_exception_again; |
||
717 | } |
||
718 | } |
||
719 | return *this; |
||
720 | } |
||
721 | |||
722 | template |
||
723 | basic_istream<_CharT, _Traits>::int_type |
||
724 | basic_istream<_CharT, _Traits>:: |
||
725 | peek(void) |
||
726 | { |
||
727 | int_type __c = traits_type::eof(); |
||
728 | _M_gcount = 0; |
||
729 | sentry __cerb(*this, true); |
||
730 | if (__cerb) |
||
731 | { |
||
732 | try |
||
733 | { __c = this->rdbuf()->sgetc(); } |
||
734 | catch(exception& __fail) |
||
735 | { |
||
736 | // 27.6.1.3 paragraph 1 |
||
737 | // Turn this on without causing an ios::failure to be thrown. |
||
738 | this->setstate(ios_base::badbit); |
||
739 | if ((this->exceptions() & ios_base::badbit) != 0) |
||
740 | __throw_exception_again; |
||
741 | } |
||
742 | } |
||
743 | return __c; |
||
744 | } |
||
745 | |||
746 | template |
||
747 | basic_istream<_CharT, _Traits>& |
||
748 | basic_istream<_CharT, _Traits>:: |
||
749 | read(char_type* __s, streamsize __n) |
||
750 | { |
||
751 | _M_gcount = 0; |
||
752 | sentry __cerb(*this, true); |
||
753 | if (__cerb) |
||
754 | { |
||
755 | if (__n > 0) |
||
756 | { |
||
757 | try |
||
758 | { |
||
759 | const int_type __eof = traits_type::eof(); |
||
760 | __streambuf_type* __sb = this->rdbuf(); |
||
761 | int_type __c = __sb->sbumpc(); |
||
762 | bool __testeof = __c == __eof; |
||
763 | |||
764 | while (_M_gcount < __n - 1 && !__testeof) |
||
765 | { |
||
766 | *__s++ = traits_type::to_char_type(__c); |
||
767 | ++_M_gcount; |
||
768 | __c = __sb->sbumpc(); |
||
769 | __testeof = __c == __eof; |
||
770 | } |
||
771 | if (__testeof) |
||
772 | this->setstate(ios_base::eofbit | ios_base::failbit); |
||
773 | else |
||
774 | { |
||
775 | // _M_gcount == __n - 1 |
||
776 | *__s++ = traits_type::to_char_type(__c); |
||
777 | ++_M_gcount; |
||
778 | } |
||
779 | } |
||
780 | catch(exception& __fail) |
||
781 | { |
||
782 | // 27.6.1.3 paragraph 1 |
||
783 | // Turn this on without causing an ios::failure to be thrown. |
||
784 | this->setstate(ios_base::badbit); |
||
785 | if ((this->exceptions() & ios_base::badbit) != 0) |
||
786 | __throw_exception_again; |
||
787 | } |
||
788 | } |
||
789 | } |
||
790 | else |
||
791 | this->setstate(ios_base::failbit); |
||
792 | return *this; |
||
793 | } |
||
794 | |||
795 | template |
||
796 | streamsize |
||
797 | basic_istream<_CharT, _Traits>:: |
||
798 | readsome(char_type* __s, streamsize __n) |
||
799 | { |
||
800 | const int_type __eof = traits_type::eof(); |
||
801 | _M_gcount = 0; |
||
802 | sentry __cerb(*this, true); |
||
803 | if (__cerb) |
||
804 | { |
||
805 | if (__n > 0) |
||
806 | { |
||
807 | try |
||
808 | { |
||
809 | streamsize __num = this->rdbuf()->in_avail(); |
||
810 | if (__num != static_cast |
||
811 | { |
||
812 | __num = min(__num, __n); |
||
813 | _M_gcount = this->rdbuf()->sgetn(__s, __num); |
||
814 | } |
||
815 | else |
||
816 | this->setstate(ios_base::eofbit); |
||
817 | } |
||
818 | catch(exception& __fail) |
||
819 | { |
||
820 | // 27.6.1.3 paragraph 1 |
||
821 | // Turn this on without causing an ios::failure to be thrown. |
||
822 | this->setstate(ios_base::badbit); |
||
823 | if ((this->exceptions() & ios_base::badbit) != 0) |
||
824 | __throw_exception_again; |
||
825 | } |
||
826 | } |
||
827 | } |
||
828 | else |
||
829 | this->setstate(ios_base::failbit); |
||
830 | return _M_gcount; |
||
831 | } |
||
832 | |||
833 | template |
||
834 | basic_istream<_CharT, _Traits>& |
||
835 | basic_istream<_CharT, _Traits>:: |
||
836 | putback(char_type __c) |
||
837 | { |
||
838 | sentry __cerb(*this, true); |
||
839 | if (__cerb) |
||
840 | { |
||
841 | try |
||
842 | { |
||
843 | const int_type __eof = traits_type::eof(); |
||
844 | __streambuf_type* __sb = this->rdbuf(); |
||
845 | if (!__sb || __sb->sputbackc(__c) == __eof) |
||
846 | this->setstate(ios_base::badbit); |
||
847 | } |
||
848 | catch(exception& __fail) |
||
849 | { |
||
850 | // 27.6.1.3 paragraph 1 |
||
851 | // Turn this on without causing an ios::failure to be thrown. |
||
852 | this->setstate(ios_base::badbit); |
||
853 | if ((this->exceptions() & ios_base::badbit) != 0) |
||
854 | __throw_exception_again; |
||
855 | } |
||
856 | } |
||
857 | else |
||
858 | this->setstate(ios_base::failbit); |
||
859 | return *this; |
||
860 | } |
||
861 | |||
862 | template |
||
863 | basic_istream<_CharT, _Traits>& |
||
864 | basic_istream<_CharT, _Traits>:: |
||
865 | unget(void) |
||
866 | { |
||
867 | _M_gcount = 0; |
||
868 | sentry __cerb(*this, true); |
||
869 | if (__cerb) |
||
870 | { |
||
871 | try |
||
872 | { |
||
873 | const int_type __eof = traits_type::eof(); |
||
874 | __streambuf_type* __sb = this->rdbuf(); |
||
875 | if (!__sb || __eof == __sb->sungetc()) |
||
876 | this->setstate(ios_base::badbit); |
||
877 | } |
||
878 | catch(exception& __fail) |
||
879 | { |
||
880 | // 27.6.1.3 paragraph 1 |
||
881 | // Turn this on without causing an ios::failure to be thrown. |
||
882 | this->setstate(ios_base::badbit); |
||
883 | if ((this->exceptions() & ios_base::badbit) != 0) |
||
884 | __throw_exception_again; |
||
885 | } |
||
886 | } |
||
887 | else |
||
888 | this->setstate(ios_base::failbit); |
||
889 | return *this; |
||
890 | } |
||
891 | |||
892 | template |
||
893 | int |
||
894 | basic_istream<_CharT, _Traits>:: |
||
895 | sync(void) |
||
896 | { |
||
897 | int __ret = traits_type::eof(); |
||
898 | _M_gcount = 0; |
||
899 | sentry __cerb(*this, true); |
||
900 | if (__cerb) |
||
901 | { |
||
902 | try |
||
903 | { |
||
904 | __streambuf_type* __sb = this->rdbuf(); |
||
905 | if (!__sb || __ret == __sb->pubsync()) |
||
906 | this->setstate(ios_base::badbit); |
||
907 | else |
||
908 | __ret = 0; |
||
909 | } |
||
910 | catch(exception& __fail) |
||
911 | { |
||
912 | // 27.6.1.3 paragraph 1 |
||
913 | // Turn this on without causing an ios::failure to be thrown. |
||
914 | this->setstate(ios_base::badbit); |
||
915 | if ((this->exceptions() & ios_base::badbit) != 0) |
||
916 | __throw_exception_again; |
||
917 | } |
||
918 | } |
||
919 | return __ret; |
||
920 | } |
||
921 | |||
922 | template |
||
923 | typename basic_istream<_CharT, _Traits>::pos_type |
||
924 | basic_istream<_CharT, _Traits>:: |
||
925 | tellg(void) |
||
926 | { |
||
927 | pos_type __ret = pos_type(-1); |
||
928 | _M_gcount = 0; |
||
929 | sentry __cerb(*this, true); |
||
930 | if (__cerb) |
||
931 | { |
||
932 | try |
||
933 | { |
||
934 | __ret = this->rdbuf()->pubseekoff(0, ios_base::cur, ios_base::in); |
||
935 | } |
||
936 | catch(exception& __fail) |
||
937 | { |
||
938 | // 27.6.1.3 paragraph 1 |
||
939 | // Turn this on without causing an ios::failure to be thrown. |
||
940 | this->setstate(ios_base::badbit); |
||
941 | if ((this->exceptions() & ios_base::badbit) != 0) |
||
942 | __throw_exception_again; |
||
943 | } |
||
944 | } |
||
945 | return __ret; |
||
946 | } |
||
947 | |||
948 | |||
949 | template |
||
950 | basic_istream<_CharT, _Traits>& |
||
951 | basic_istream<_CharT, _Traits>:: |
||
952 | seekg(pos_type __pos) |
||
953 | { |
||
954 | _M_gcount = 0; |
||
955 | sentry __cerb(*this, true); |
||
956 | if (__cerb) |
||
957 | { |
||
958 | try |
||
959 | { |
||
960 | #ifdef _GLIBCPP_RESOLVE_LIB_DEFECTS |
||
961 | // 136. seekp, seekg setting wrong streams? |
||
962 | pos_type __err = this->rdbuf()->pubseekpos(__pos, ios_base::in); |
||
963 | |||
964 | // 129. Need error indication from seekp() and seekg() |
||
965 | if (__err == pos_type(off_type(-1))) |
||
966 | this->setstate(failbit); |
||
967 | #endif |
||
968 | } |
||
969 | catch(exception& __fail) |
||
970 | { |
||
971 | // 27.6.1.3 paragraph 1 |
||
972 | // Turn this on without causing an ios::failure to be thrown. |
||
973 | this->setstate(ios_base::badbit); |
||
974 | if ((this->exceptions() & ios_base::badbit) != 0) |
||
975 | __throw_exception_again; |
||
976 | } |
||
977 | } |
||
978 | return *this; |
||
979 | } |
||
980 | |||
981 | template |
||
982 | basic_istream<_CharT, _Traits>& |
||
983 | basic_istream<_CharT, _Traits>:: |
||
984 | seekg(off_type __off, ios_base::seekdir __dir) |
||
985 | { |
||
986 | _M_gcount = 0; |
||
987 | sentry __cerb(*this, true); |
||
988 | if (__cerb) |
||
989 | { |
||
990 | try |
||
991 | { |
||
992 | #ifdef _GLIBCPP_RESOLVE_LIB_DEFECTS |
||
993 | // 136. seekp, seekg setting wrong streams? |
||
994 | pos_type __err = this->rdbuf()->pubseekoff(__off, __dir, |
||
995 | ios_base::in); |
||
996 | |||
997 | // 129. Need error indication from seekp() and seekg() |
||
998 | if (__err == pos_type(off_type(-1))) |
||
999 | this->setstate(failbit); |
||
1000 | #endif |
||
1001 | } |
||
1002 | catch(exception& __fail) |
||
1003 | { |
||
1004 | // 27.6.1.3 paragraph 1 |
||
1005 | // Turn this on without causing an ios::failure to be thrown. |
||
1006 | this->setstate(ios_base::badbit); |
||
1007 | if ((this->exceptions() & ios_base::badbit) != 0) |
||
1008 | __throw_exception_again; |
||
1009 | } |
||
1010 | } |
||
1011 | return *this; |
||
1012 | } |
||
1013 | |||
1014 | // 27.6.1.2.3 Character extraction templates |
||
1015 | template |
||
1016 | basic_istream<_CharT, _Traits>& |
||
1017 | operator>>(basic_istream<_CharT, _Traits>& __in, _CharT& __c) |
||
1018 | { |
||
1019 | typedef basic_istream<_CharT, _Traits> __istream_type; |
||
1020 | typename __istream_type::sentry __cerb(__in, false); |
||
1021 | if (__cerb) |
||
1022 | { |
||
1023 | try |
||
1024 | { __in.get(__c); } |
||
1025 | catch(exception& __fail) |
||
1026 | { |
||
1027 | // 27.6.1.2.1 Common requirements. |
||
1028 | // Turn this on without causing an ios::failure to be thrown. |
||
1029 | __in.setstate(ios_base::badbit); |
||
1030 | if ((__in.exceptions() & ios_base::badbit) != 0) |
||
1031 | __throw_exception_again; |
||
1032 | } |
||
1033 | } |
||
1034 | else |
||
1035 | __in.setstate(ios_base::failbit); |
||
1036 | return __in; |
||
1037 | } |
||
1038 | |||
1039 | template |
||
1040 | basic_istream<_CharT, _Traits>& |
||
1041 | operator>>(basic_istream<_CharT, _Traits>& __in, _CharT* __s) |
||
1042 | { |
||
1043 | typedef basic_istream<_CharT, _Traits> __istream_type; |
||
1044 | typedef typename __istream_type::__streambuf_type __streambuf_type; |
||
1045 | typedef typename _Traits::int_type int_type; |
||
1046 | typedef _CharT char_type; |
||
1047 | typedef ctype<_CharT> __ctype_type; |
||
1048 | streamsize __extracted = 0; |
||
1049 | |||
1050 | typename __istream_type::sentry __cerb(__in, false); |
||
1051 | if (__cerb) |
||
1052 | { |
||
1053 | try |
||
1054 | { |
||
1055 | // Figure out how many characters to extract. |
||
1056 | streamsize __num = __in.width(); |
||
1057 | if (__num == 0) |
||
1058 | __num = numeric_limits |
||
1059 | |||
1060 | __streambuf_type* __sb = __in.rdbuf(); |
||
1061 | const __ctype_type* __ctype = __in._M_get_fctype_ios(); |
||
1062 | int_type __c = __sb->sbumpc(); |
||
1063 | const int_type __eof = _Traits::eof(); |
||
1064 | bool __testsp = __ctype->is(ctype_base::space, __c); |
||
1065 | bool __testeof = __c == __eof; |
||
1066 | |||
1067 | while (__extracted < __num - 1 && !__testeof && !__testsp) |
||
1068 | { |
||
1069 | *__s++ = __c; |
||
1070 | ++__extracted; |
||
1071 | __c = __sb->sbumpc(); |
||
1072 | __testeof = __c == __eof; |
||
1073 | __testsp = __ctype->is(ctype_base::space, __c); |
||
1074 | } |
||
1075 | |||
1076 | if (!__testeof) |
||
1077 | __sb->sputbackc(__c); |
||
1078 | else |
||
1079 | __in.setstate(ios_base::eofbit); |
||
1080 | |||
1081 | #ifdef _GLIBCPP_RESOLVE_LIB_DEFECTS |
||
1082 | //68. Extractors for char* should store null at end |
||
1083 | *__s = char_type(); |
||
1084 | #endif |
||
1085 | __in.width(0); |
||
1086 | } |
||
1087 | catch(exception& __fail) |
||
1088 | { |
||
1089 | // 27.6.1.2.1 Common requirements. |
||
1090 | // Turn this on without causing an ios::failure to be thrown. |
||
1091 | __in.setstate(ios_base::badbit); |
||
1092 | if ((__in.exceptions() & ios_base::badbit) != 0) |
||
1093 | __throw_exception_again; |
||
1094 | } |
||
1095 | } |
||
1096 | if (!__extracted) |
||
1097 | __in.setstate(ios_base::failbit); |
||
1098 | return __in; |
||
1099 | } |
||
1100 | |||
1101 | // 27.6.1.4 Standard basic_istream manipulators |
||
1102 | template |
||
1103 | basic_istream<_CharT,_Traits>& |
||
1104 | ws(basic_istream<_CharT,_Traits>& __in) |
||
1105 | { |
||
1106 | typedef basic_istream<_CharT, _Traits> __istream_type; |
||
1107 | typedef typename __istream_type::__streambuf_type __streambuf_type; |
||
1108 | typedef typename __istream_type::__ctype_type __ctype_type; |
||
1109 | typedef typename __istream_type::int_type __int_type; |
||
1110 | typedef typename __istream_type::char_type __char_type; |
||
1111 | |||
1112 | __streambuf_type* __sb = __in.rdbuf(); |
||
1113 | const __ctype_type* __ctype = __in._M_get_fctype_ios(); |
||
1114 | const __int_type __eof = _Traits::eof(); |
||
1115 | __int_type __c; |
||
1116 | bool __testeof; |
||
1117 | bool __testsp; |
||
1118 | |||
1119 | do |
||
1120 | { |
||
1121 | __c = __sb->sbumpc(); |
||
1122 | __testeof = __c == __eof; |
||
1123 | __testsp = __ctype->is(ctype_base::space, __c); |
||
1124 | } |
||
1125 | while (!__testeof && __testsp); |
||
1126 | |||
1127 | if (!__testeof && !__testsp) |
||
1128 | __sb->sputbackc(__c); |
||
1129 | else |
||
1130 | __in.setstate(ios_base::eofbit); |
||
1131 | |||
1132 | return __in; |
||
1133 | } |
||
1134 | |||
1135 | // 21.3.7.9 basic_string::getline and operators |
||
1136 | template |
||
1137 | basic_istream<_CharT, _Traits>& |
||
1138 | operator>>(basic_istream<_CharT, _Traits>& __in, |
||
1139 | basic_string<_CharT, _Traits, _Alloc>& __str) |
||
1140 | { |
||
1141 | typedef basic_istream<_CharT, _Traits> __istream_type; |
||
1142 | typedef typename __istream_type::int_type __int_type; |
||
1143 | typedef typename __istream_type::__streambuf_type __streambuf_type; |
||
1144 | typedef typename __istream_type::__ctype_type __ctype_type; |
||
1145 | typedef basic_string<_CharT, _Traits, _Alloc> __string_type; |
||
1146 | typedef typename __string_type::size_type __size_type; |
||
1147 | __size_type __extracted = 0; |
||
1148 | |||
1149 | typename __istream_type::sentry __cerb(__in, false); |
||
1150 | if (__cerb) |
||
1151 | { |
||
1152 | __str.erase(); |
||
1153 | streamsize __w = __in.width(); |
||
1154 | __size_type __n; |
||
1155 | __n = __w > 0 ? static_cast<__size_type>(__w) : __str.max_size(); |
||
1156 | |||
1157 | __streambuf_type* __sb = __in.rdbuf(); |
||
1158 | const __ctype_type* __ctype = __in._M_get_fctype_ios(); |
||
1159 | __int_type __c = __sb->sbumpc(); |
||
1160 | const __int_type __eof = _Traits::eof(); |
||
1161 | bool __testsp = __ctype->is(ctype_base::space, __c); |
||
1162 | bool __testeof = __c == __eof; |
||
1163 | |||
1164 | while (__extracted < __n && !__testeof && !__testsp) |
||
1165 | { |
||
1166 | __str += _Traits::to_char_type(__c); |
||
1167 | ++__extracted; |
||
1168 | __c = __sb->sbumpc(); |
||
1169 | __testeof = __c == __eof; |
||
1170 | __testsp = __ctype->is(ctype_base::space, __c); |
||
1171 | } |
||
1172 | if (!__testeof) |
||
1173 | __sb->sputbackc(__c); |
||
1174 | else |
||
1175 | __in.setstate(ios_base::eofbit); |
||
1176 | __in.width(0); |
||
1177 | } |
||
1178 | #ifdef _GLIBCPP_RESOLVE_LIB_DEFECTS |
||
1179 | // 2000-02-01 Number to be determined |
||
1180 | if (!__extracted) |
||
1181 | __in.setstate (ios_base::failbit); |
||
1182 | #endif |
||
1183 | return __in; |
||
1184 | } |
||
1185 | |||
1186 | template |
||
1187 | basic_istream<_CharT, _Traits>& |
||
1188 | getline(basic_istream<_CharT, _Traits>& __in, |
||
1189 | basic_string<_CharT, _Traits, _Alloc>& __str, _CharT __delim) |
||
1190 | { |
||
1191 | typedef basic_istream<_CharT, _Traits> __istream_type; |
||
1192 | typedef typename __istream_type::int_type __int_type; |
||
1193 | typedef typename __istream_type::__streambuf_type __streambuf_type; |
||
1194 | typedef typename __istream_type::__ctype_type __ctype_type; |
||
1195 | typedef basic_string<_CharT, _Traits, _Alloc> __string_type; |
||
1196 | typedef typename __string_type::size_type __size_type; |
||
1197 | |||
1198 | __size_type __extracted = 0; |
||
1199 | bool __testdelim = false; |
||
1200 | typename __istream_type::sentry __cerb(__in, true); |
||
1201 | if (__cerb) |
||
1202 | { |
||
1203 | __str.erase(); |
||
1204 | __size_type __n = __str.max_size(); |
||
1205 | |||
1206 | __int_type __idelim = _Traits::to_int_type(__delim); |
||
1207 | __streambuf_type* __sb = __in.rdbuf(); |
||
1208 | __int_type __c = __sb->sbumpc(); |
||
1209 | const __int_type __eof = _Traits::eof(); |
||
1210 | __testdelim = __c == __idelim; |
||
1211 | bool __testeof = __c == __eof; |
||
1212 | |||
1213 | while (__extracted <= __n && !__testeof && !__testdelim) |
||
1214 | { |
||
1215 | __str += _Traits::to_char_type(__c); |
||
1216 | ++__extracted; |
||
1217 | __c = __sb->sbumpc(); |
||
1218 | __testeof = __c == __eof; |
||
1219 | __testdelim = __c == __idelim; |
||
1220 | } |
||
1221 | if (__testeof) |
||
1222 | __in.setstate(ios_base::eofbit); |
||
1223 | } |
||
1224 | if (!__extracted && !__testdelim) |
||
1225 | __in.setstate(ios_base::failbit); |
||
1226 | return __in; |
||
1227 | } |
||
1228 | |||
1229 | template |
||
1230 | inline basic_istream<_CharT,_Traits>& |
||
1231 | getline(basic_istream<_CharT, _Traits>& __in, |
||
1232 | basic_string<_CharT,_Traits,_Alloc>& __str) |
||
1233 | { return getline(__in, __str, __in.widen('\n')); } |
||
1234 | } // namespace std |
||
1235 | |||
1236 | // Local Variables: |
||
1237 | // mode:C++ |
||
1238 | // End:=>>>>>>> |
||
1239 |