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1 /* |
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2 |
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3 Copyright (C) 1996, 1997 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 "oct-stream.h" |
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27 #include "c-file-ptr-stream.h" |
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28 |
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29 class |
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30 octave_base_stdiostream : public octave_base_stream |
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31 { |
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32 public: |
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33 |
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34 octave_base_stdiostream |
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35 (const std::string& n, |
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36 std::ios::openmode arg_md = std::ios::in|std::ios::out, |
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37 oct_mach_info::float_format flt_fmt = oct_mach_info::native) |
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38 : octave_base_stream (arg_md, flt_fmt), nm (n) { } |
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39 |
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40 // Position a stream at OFFSET relative to ORIGIN. |
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41 |
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42 int seek (std::streamoff offset, std::ios::seekdir origin); |
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43 |
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44 // Return current stream position. |
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45 |
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46 long tell (void) const; |
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47 |
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48 // The name of the file. |
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49 |
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50 std::string name (void) const { return nm; } |
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51 |
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52 virtual c_file_ptr_buf *rdbuf (void) const = 0; |
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53 |
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54 virtual bool bad (void) const = 0; |
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55 |
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56 virtual void clear (void) = 0; |
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57 |
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58 protected: |
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59 |
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60 std::string nm; |
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61 |
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62 ~octave_base_stdiostream (void) { } |
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63 |
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64 // No copying! |
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65 |
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66 octave_base_stdiostream (const octave_base_stdiostream&); |
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67 |
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68 octave_base_stdiostream& operator = (const octave_base_stdiostream&); |
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69 }; |
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70 |
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71 class |
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72 octave_istdiostream : public octave_base_stdiostream |
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73 { |
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74 public: |
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75 |
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76 octave_istdiostream (const std::string& n, FILE *f = 0, |
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77 std::ios::openmode arg_md = std::ios::in, |
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78 oct_mach_info::float_format flt_fmt = oct_mach_info::native, |
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79 c_file_ptr_buf::close_fcn cf = c_file_ptr_buf::fclose); |
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80 |
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81 static octave_stream |
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82 create (const std::string& n, FILE *f = 0, |
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83 std::ios::openmode arg_md = std::ios::in, |
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84 oct_mach_info::float_format flt_fmt = oct_mach_info::native, |
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85 c_file_ptr_buf::close_fcn cf = c_file_ptr_buf::fclose); |
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86 |
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87 // Return non-zero if EOF has been reached on this stream. |
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88 |
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89 bool eof (void) const { return is ? is->eof () : true; } |
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90 |
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91 std::istream *input_stream (void) { return is; } |
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92 |
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93 std::ostream *output_stream (void) { return 0; } |
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94 |
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95 // XXX FIXME XXX -- should not have to cast away const here. |
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96 c_file_ptr_buf *rdbuf (void) const |
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97 { return is ? (const_cast<i_c_file_ptr_stream *> (is))->rdbuf () : 0; } |
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98 |
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99 bool bad (void) const { return is ? is->bad () : true; } |
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100 |
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101 void clear (void) |
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102 { |
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103 if (is) |
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104 is->clear (); |
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105 } |
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106 |
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107 void do_close (void); |
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108 |
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109 protected: |
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110 |
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111 i_c_file_ptr_stream *is; |
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112 |
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113 ~octave_istdiostream (void); |
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114 |
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115 private: |
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116 |
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117 // No copying! |
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118 |
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119 octave_istdiostream (const octave_istdiostream&); |
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120 |
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121 octave_istdiostream& operator = (const octave_istdiostream&); |
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122 }; |
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123 |
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124 class |
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125 octave_ostdiostream : public octave_base_stdiostream |
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126 { |
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127 public: |
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128 |
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129 octave_ostdiostream (const std::string& n, FILE *f = 0, |
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130 std::ios::openmode arg_md = std::ios::out, |
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131 oct_mach_info::float_format flt_fmt = oct_mach_info::native, |
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132 c_file_ptr_buf::close_fcn cf = c_file_ptr_buf::fclose); |
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133 |
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134 static octave_stream |
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135 create (const std::string& n, FILE *f = 0, |
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136 std::ios::openmode arg_md = std::ios::out, |
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137 oct_mach_info::float_format flt_fmt = oct_mach_info::native, |
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138 c_file_ptr_buf::close_fcn cf = c_file_ptr_buf::fclose); |
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139 |
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140 // Return non-zero if EOF has been reached on this stream. |
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141 |
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142 bool eof (void) const { return os ? os->eof () : true; } |
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143 |
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144 std::istream *input_stream (void) { return 0; } |
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145 |
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146 std::ostream *output_stream (void) { return os; } |
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147 |
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148 // XXX FIXME XXX -- should not have to cast away const here. |
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149 c_file_ptr_buf *rdbuf (void) const |
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150 { return os ? (const_cast<o_c_file_ptr_stream *> (os))->rdbuf () : 0; } |
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151 |
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152 bool bad (void) const { return os ? os->bad () : true; } |
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153 |
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154 void clear (void) |
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155 { |
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156 if (os) |
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157 os->clear (); |
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158 } |
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159 |
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160 void do_close (void); |
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161 |
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162 protected: |
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163 |
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164 o_c_file_ptr_stream *os; |
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165 |
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166 ~octave_ostdiostream (void); |
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167 |
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168 private: |
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169 |
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170 // No copying! |
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171 |
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172 octave_ostdiostream (const octave_ostdiostream&); |
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173 |
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174 octave_ostdiostream& operator = (const octave_ostdiostream&); |
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175 }; |
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176 |
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177 class |
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178 octave_iostdiostream : public octave_base_stdiostream |
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179 { |
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180 public: |
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181 |
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182 octave_iostdiostream (const std::string& n, FILE *f = 0, |
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183 std::ios::openmode arg_md = std::ios::in, |
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184 oct_mach_info::float_format flt_fmt = oct_mach_info::native, |
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185 c_file_ptr_buf::close_fcn cf = c_file_ptr_buf::fclose); |
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186 |
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187 static octave_stream |
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188 create (const std::string& n, FILE *f = 0, |
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189 std::ios::openmode arg_md = std::ios::in|std::ios::out, |
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190 oct_mach_info::float_format flt_fmt = oct_mach_info::native, |
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191 c_file_ptr_buf::close_fcn cf = c_file_ptr_buf::fclose); |
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192 |
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193 // Return non-zero if EOF has been reached on this stream. |
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194 |
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195 bool eof (void) const { return s ? s->eof () : true; } |
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196 |
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197 std::istream *input_stream (void) { return s; } |
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198 |
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199 std::ostream *output_stream (void) { return s; } |
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200 |
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201 // XXX FIXME XXX -- should not have to cast away const here. |
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202 c_file_ptr_buf *rdbuf (void) const |
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203 { return s ? (const_cast<io_c_file_ptr_stream *> (s))->rdbuf () : 0; } |
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204 |
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205 bool bad (void) const { return s ? s->bad () : true; } |
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206 |
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207 void clear (void) |
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208 { |
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209 if (s) |
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210 s->clear (); |
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211 } |
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212 |
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213 void do_close (void); |
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214 |
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215 protected: |
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216 |
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217 io_c_file_ptr_stream *s; |
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218 |
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219 ~octave_iostdiostream (void); |
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220 |
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221 private: |
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222 |
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223 // No copying! |
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224 |
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225 octave_iostdiostream (const octave_iostdiostream&); |
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226 |
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227 octave_iostdiostream& operator = (const octave_iostdiostream&); |
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228 }; |
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229 |
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230 #endif |
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231 |
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232 /* |
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233 ;;; Local Variables: *** |
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234 ;;; mode: C++ *** |
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235 ;;; End: *** |
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236 */ |
