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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_iostream_h) |
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24 #define octave_octave_iostream_h 1 |
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25 |
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26 #include "oct-stream.h" |
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27 |
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28 class istream; |
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29 class ostream; |
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30 |
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31 class |
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32 octave_base_iostream : public octave_base_stream |
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33 { |
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34 public: |
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35 |
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36 octave_base_iostream (const string& n = string (), |
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37 ios::openmode md = ios::in|ios::out, |
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38 octave_base_stream::arch_type at = native) |
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39 : octave_base_stream (md, at), nm (n) { } |
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40 |
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41 ~octave_base_iostream (void) { } |
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42 |
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43 // Position a stream at OFFSET relative to ORIGIN. |
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44 |
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45 int seek (streampos offset, ios::seek_dir origin); |
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46 |
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47 // Return current stream position. |
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48 |
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49 long tell (void) const; |
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50 |
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51 // Return non-zero if EOF has been reached on this stream. |
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52 |
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53 bool eof (void) const; |
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54 |
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55 // The name of the file. |
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56 |
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57 string name (void); |
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58 |
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59 protected: |
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60 |
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61 void invalid_operation (void) const; |
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62 |
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63 private: |
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64 |
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65 string nm; |
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66 |
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67 virtual const char *stream_type (void) const = 0; |
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68 |
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69 // No copying! |
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70 |
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71 octave_base_iostream (const octave_base_iostream&); |
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72 |
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73 octave_base_iostream& operator = (const octave_base_iostream&); |
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74 }; |
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75 |
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76 class |
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77 octave_istream : public octave_base_iostream |
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78 { |
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79 public: |
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80 |
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81 octave_istream (istream *arg = 0, const string& nm = string ()) |
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82 : octave_base_iostream (nm, ios::in, octave_base_stream::native), |
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83 is (arg) { } |
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84 |
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85 ~octave_istream (void) { } |
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86 |
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87 istream *input_stream (void) { return is; } |
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88 |
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89 ostream *output_stream (void) { return 0; } |
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90 |
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91 private: |
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92 |
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93 istream *is; |
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94 |
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95 const char *stream_type (void) const { return "octave_istream"; } |
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96 |
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97 // No copying! |
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98 |
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99 octave_istream (const octave_istream&); |
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100 |
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101 octave_istream& operator = (const octave_istream&); |
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102 }; |
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103 |
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104 class |
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105 octave_ostream : public octave_base_iostream |
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106 { |
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107 public: |
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108 |
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109 octave_ostream (ostream *arg, const string& nm = string ()) |
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110 : octave_base_iostream (nm, ios::out, octave_base_stream::native), |
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111 os (arg) { } |
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112 |
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113 ~octave_ostream (void) { } |
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114 |
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115 istream *input_stream (void) { return 0; } |
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116 |
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117 ostream *output_stream (void) { return os; } |
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118 |
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119 private: |
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120 |
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121 ostream *os; |
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122 |
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123 const char *stream_type (void) const { return "octave_ostream"; } |
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124 |
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125 // No copying! |
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126 |
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127 octave_ostream (const octave_ostream&); |
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128 |
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129 octave_ostream& operator = (const octave_ostream&); |
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130 }; |
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131 |
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132 #endif |
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133 |
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134 /* |
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135 ;;; Local Variables: *** |
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136 ;;; mode: C++ *** |
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137 ;;; End: *** |
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138 */ |
