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2081
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1 /* |
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2 |
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3 Copyright (C) 1996 John W. Eaton |
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4 |
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5 This file is part of Octave. |
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6 |
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7 Octave is free software; you can redistribute it and/or modify it |
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8 under the terms of the GNU General Public License as published by the |
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9 Free Software Foundation; either version 2, or (at your option) any |
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10 later version. |
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11 |
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12 Octave is distributed in the hope that it will be useful, but WITHOUT |
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13 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
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14 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
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15 for more details. |
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16 |
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17 You should have received a copy of the GNU General Public License |
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18 along with Octave; see the file COPYING. If not, write to the Free |
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19 Software Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. |
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20 |
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21 */ |
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22 |
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23 #if !defined (octave_octave_stdiostream_h) |
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24 #define octave_octave_stdiostream_h 1 |
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25 |
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26 #include <stdiostream.h> |
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27 |
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28 #include "oct-stream.h" |
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29 |
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30 class |
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31 octave_base_stdiostream : public octave_base_stream |
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32 { |
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33 public: |
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34 |
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35 octave_base_stdiostream (const string& n, FILE *f, |
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36 ios::openmode arg_md = ios::in|ios::out, |
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37 arch_type arg_at = native) |
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38 : octave_base_stream (arg_md, arg_at), nm (n), fp (f) { } |
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39 |
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40 ~octave_base_stdiostream (void); |
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41 |
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42 // Position a stream at OFFSET relative to ORIGIN. |
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43 |
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44 int seek (streampos offset, ios::seek_dir origin); |
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45 |
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46 // Return current stream position. |
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47 |
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48 long tell (void) const; |
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49 |
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50 // The name of the file. |
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51 |
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52 string name (void) { return nm; } |
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53 |
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54 virtual stdiobuf *rdbuf (void) const = 0; |
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55 |
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56 virtual bool bad (void) const = 0; |
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57 |
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58 virtual void clear (void) = 0; |
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59 |
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60 protected: |
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61 |
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62 string nm; |
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63 |
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64 FILE *fp; |
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65 |
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66 // No copying! |
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67 |
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68 octave_base_stdiostream (const octave_base_stdiostream&); |
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69 |
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70 octave_base_stdiostream& operator = (const octave_base_stdiostream&); |
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71 }; |
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72 |
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73 class |
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74 octave_istdiostream : public octave_base_stdiostream |
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75 { |
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76 public: |
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77 |
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78 octave_istdiostream (const string& n, FILE *f = 0, |
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79 ios::openmode arg_md = ios::in, |
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80 arch_type arg_at = native); |
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81 |
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82 ~octave_istdiostream (void); |
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83 |
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84 // Return non-zero if EOF has been reached on this stream. |
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85 |
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86 bool eof (void) const { return is ? is->eof () : true; } |
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87 |
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88 istream *input_stream (void) { return is; } |
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89 |
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90 ostream *output_stream (void) { return 0; } |
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91 |
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92 // XXX FIXME XXX -- should not have to cast away const here. |
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93 stdiobuf *rdbuf (void) const |
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94 { return is ? ((istdiostream *) is)->rdbuf () : 0; } |
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95 |
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96 bool bad (void) const { return is ? is->bad () : true; } |
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97 |
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98 void clear (void) |
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99 { |
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100 if (is) |
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101 is->clear (); |
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102 } |
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103 |
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104 protected: |
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105 |
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106 istdiostream *is; |
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107 |
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108 private: |
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109 |
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110 // No copying! |
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111 |
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112 octave_istdiostream (const octave_istdiostream&); |
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113 |
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114 octave_istdiostream& operator = (const octave_istdiostream&); |
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115 }; |
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116 |
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117 class |
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118 octave_ostdiostream : public octave_base_stdiostream |
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119 { |
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120 public: |
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121 |
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122 octave_ostdiostream (const string& n, FILE *f = 0, |
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123 ios::openmode arg_md = ios::out, |
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124 arch_type arg_at = native); |
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125 |
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126 ~octave_ostdiostream (void); |
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127 |
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128 // Return non-zero if EOF has been reached on this stream. |
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129 |
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130 bool eof (void) const { return os ? os->eof () : true; } |
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131 |
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132 istream *input_stream (void) { return 0; } |
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133 |
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134 ostream *output_stream (void) { return os; } |
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135 |
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136 // XXX FIXME XXX -- should not have to cast away const here. |
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137 stdiobuf *rdbuf (void) const |
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138 { return os ? ((ostdiostream *) os)->rdbuf () : 0; } |
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139 |
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140 bool bad (void) const { return os ? os->bad () : true; } |
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141 |
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142 void clear (void) |
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143 { |
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144 if (os) |
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145 os->clear (); |
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146 } |
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147 |
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148 protected: |
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149 |
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150 ostdiostream *os; |
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151 |
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152 private: |
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153 |
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154 // No copying! |
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155 |
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156 octave_ostdiostream (const octave_ostdiostream&); |
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157 |
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158 octave_ostdiostream& operator = (const octave_ostdiostream&); |
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159 }; |
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160 |
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161 #endif |
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162 |
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163 /* |
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164 ;;; Local Variables: *** |
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165 ;;; mode: C++ *** |
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166 ;;; End: *** |
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167 */ |
