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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_strstream_h) |
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24 #define octave_octave_strstream_h 1 |
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25 |
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26 #include <string> |
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27 |
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28 #include "lo-sstream.h" |
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29 |
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30 #include "oct-stream.h" |
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31 |
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32 class |
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33 octave_base_strstream : public octave_base_stream |
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34 { |
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35 public: |
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36 |
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37 octave_base_strstream (std::ios::openmode m = std::ios::out, |
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38 oct_mach_info::float_format ff |
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39 = oct_mach_info::native_float_format ()) |
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40 : octave_base_stream (m, ff) { } |
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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 (long, int); |
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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); |
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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 std::string name (void) const { return std::string (); } |
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53 |
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54 virtual std::streambuf *rdbuf (void) = 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 ~octave_base_strstream (void) { } |
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63 |
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64 private: |
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65 |
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66 // No copying! |
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67 |
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68 octave_base_strstream (const octave_base_strstream&); |
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69 |
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70 octave_base_strstream& operator = (const octave_base_strstream&); |
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71 }; |
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72 |
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73 class |
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74 octave_istrstream : public octave_base_strstream |
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75 { |
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76 public: |
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77 |
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78 octave_istrstream (const char *data, |
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79 std::ios::openmode arg_md = std::ios::out, |
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80 oct_mach_info::float_format ff |
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81 = oct_mach_info::native_float_format ()) |
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82 : octave_base_strstream (arg_md, ff), is (data) { } |
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83 |
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84 octave_istrstream (const std::string& data, |
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85 std::ios::openmode arg_md = std::ios::out, |
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86 oct_mach_info::float_format ff |
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87 = oct_mach_info::native_float_format ()) |
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88 : octave_base_strstream (arg_md, ff), is (data.c_str ()) { } |
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89 |
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90 static octave_stream |
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91 create (const char *data, std::ios::openmode arg_md = std::ios::out, |
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92 oct_mach_info::float_format ff |
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93 = oct_mach_info::native_float_format ()); |
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94 |
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95 static octave_stream |
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96 create (const std::string& data, std::ios::openmode arg_md = std::ios::out, |
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97 oct_mach_info::float_format ff |
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98 = oct_mach_info::native_float_format ()); |
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99 |
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100 // Return non-zero if EOF has been reached on this stream. |
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101 |
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102 bool eof (void) const { return is.eof (); } |
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103 |
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104 std::istream *input_stream (void) { return &is; } |
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105 |
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106 std::ostream *output_stream (void) { return 0; } |
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107 |
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108 std::streambuf *rdbuf (void) { return is ? is.rdbuf () : 0; } |
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109 |
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110 bool bad (void) const { return is.bad (); } |
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111 |
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112 void clear (void) { is.clear (); } |
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113 |
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114 protected: |
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115 |
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116 ~octave_istrstream (void) { } |
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117 |
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118 private: |
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119 |
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120 ISSTREAM is; |
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121 |
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122 // No copying! |
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123 |
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124 octave_istrstream (const octave_istrstream&); |
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125 |
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126 octave_istrstream& operator = (const octave_istrstream&); |
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127 }; |
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128 |
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129 class |
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130 octave_ostrstream : public octave_base_strstream |
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131 { |
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132 public: |
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133 |
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134 octave_ostrstream (std::ios::openmode arg_md = std::ios::out, |
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135 oct_mach_info::float_format ff |
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136 = oct_mach_info::native_float_format ()) |
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137 : octave_base_strstream (arg_md, ff) { } |
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138 |
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139 static octave_stream |
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140 create (std::ios::openmode arg_md = std::ios::out, |
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141 oct_mach_info::float_format ff |
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142 = oct_mach_info::native_float_format ()); |
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143 |
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144 // Return non-zero if EOF has been reached on this stream. |
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145 |
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146 bool eof (void) const { return os.eof (); } |
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147 |
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148 std::istream *input_stream (void) { return 0; } |
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149 |
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150 std::ostream *output_stream (void) { return &os; } |
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151 |
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152 std::string str (void) |
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153 { |
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154 os << OSSTREAM_ENDS; |
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155 std::string retval = OSSTREAM_STR (os); |
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156 OSSTREAM_FREEZE (os); |
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157 return retval; |
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158 } |
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159 |
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160 std::streambuf *rdbuf (void) { return os ? os.rdbuf () : 0; } |
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161 |
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162 bool bad (void) const { return os.bad (); } |
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163 |
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164 void clear (void) { os.clear (); } |
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165 |
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166 protected: |
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167 |
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168 ~octave_ostrstream (void) { } |
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169 |
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170 private: |
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171 |
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172 OSSTREAM os; |
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173 |
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174 // No copying! |
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175 |
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176 octave_ostrstream (const octave_ostrstream&); |
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177 |
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178 octave_ostrstream& operator = (const octave_ostrstream&); |
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179 }; |
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180 |
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181 #endif |
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182 |
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183 /* |
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184 ;;; Local Variables: *** |
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185 ;;; mode: C++ *** |
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186 ;;; End: *** |
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187 */ |
