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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 <strstream> |
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27 #include <string> |
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28 |
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29 #include "oct-stream.h" |
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30 |
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31 class |
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32 octave_base_strstream : 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_strstream (std::ios::openmode arg_md = std::ios::out, |
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37 oct_mach_info::float_format flt_fmt = |
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38 oct_mach_info::native) |
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39 : octave_base_stream (arg_md, flt_fmt) { } |
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40 |
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41 // Position a stream at OFFSET relative to ORIGIN. |
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42 |
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43 int seek (std::streamoff offset, std::ios::seekdir origin); |
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44 |
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45 // Return current stream position. |
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46 |
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47 long tell (void) const; |
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48 |
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49 // The name of the file. |
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50 |
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51 std::string name (void) const { return std::string (); } |
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52 |
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53 virtual std::streambuf *rdbuf (void) = 0; |
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54 |
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55 virtual bool bad (void) const = 0; |
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56 |
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57 virtual void clear (void) = 0; |
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58 |
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59 protected: |
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60 |
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61 ~octave_base_strstream (void) { } |
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62 |
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63 private: |
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64 |
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65 // No copying! |
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66 |
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67 octave_base_strstream (const octave_base_strstream&); |
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68 |
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69 octave_base_strstream& operator = (const octave_base_strstream&); |
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70 }; |
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71 |
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72 class |
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73 octave_istrstream : public octave_base_strstream |
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74 { |
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75 public: |
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76 |
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77 octave_istrstream (const char *data, |
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78 std::ios::openmode arg_md = std::ios::out, |
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79 oct_mach_info::float_format flt_fmt = |
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80 oct_mach_info::native) |
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81 : octave_base_strstream (arg_md, flt_fmt), is (data) { } |
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82 |
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83 octave_istrstream (const std::string& data, |
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84 std::ios::openmode arg_md = std::ios::out, |
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85 oct_mach_info::float_format flt_fmt = |
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86 oct_mach_info::native) |
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87 : octave_base_strstream (arg_md, flt_fmt), is (data.c_str ()) { } |
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88 |
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89 static octave_stream |
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90 create (const char *data, std::ios::openmode arg_md = std::ios::out, |
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91 oct_mach_info::float_format flt_fmt = oct_mach_info::native); |
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92 |
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93 static octave_stream |
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94 create (const std::string& data, std::ios::openmode arg_md = std::ios::out, |
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95 oct_mach_info::float_format flt_fmt = oct_mach_info::native); |
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96 |
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97 // Return non-zero if EOF has been reached on this stream. |
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98 |
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99 bool eof (void) const { return is.eof (); } |
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100 |
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101 std::istream *input_stream (void) { return &is; } |
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102 |
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103 std::ostream *output_stream (void) { return 0; } |
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104 |
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105 std::streambuf *rdbuf (void) { return is ? is.rdbuf () : 0; } |
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106 |
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107 bool bad (void) const { return is.bad (); } |
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108 |
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109 void clear (void) { is.clear (); } |
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110 |
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111 protected: |
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112 |
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113 ~octave_istrstream (void) { } |
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114 |
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115 private: |
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116 |
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117 std::istrstream is; |
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118 |
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119 // No copying! |
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120 |
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121 octave_istrstream (const octave_istrstream&); |
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122 |
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123 octave_istrstream& operator = (const octave_istrstream&); |
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124 }; |
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125 |
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126 class |
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127 octave_ostrstream : public octave_base_strstream |
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128 { |
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129 public: |
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130 |
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131 octave_ostrstream (std::ios::openmode arg_md = std::ios::out, |
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132 oct_mach_info::float_format flt_fmt = |
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133 oct_mach_info::native) |
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134 : octave_base_strstream (arg_md, flt_fmt) { } |
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135 |
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136 static octave_stream |
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137 create (std::ios::openmode arg_md = std::ios::out, |
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138 oct_mach_info::float_format flt_fmt = oct_mach_info::native); |
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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.eof (); } |
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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 std::string str (void) |
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149 { |
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150 os << std::ends; |
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151 char *tmp = os.str (); |
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152 std::string retval = tmp; |
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153 delete [] tmp; |
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154 return retval; |
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155 } |
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156 |
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157 std::streambuf *rdbuf (void) { return os ? os.rdbuf () : 0; } |
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158 |
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159 bool bad (void) const { return os.bad (); } |
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160 |
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161 void clear (void) { os.clear (); } |
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162 |
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163 protected: |
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164 |
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165 ~octave_ostrstream (void) { } |
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166 |
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167 private: |
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168 |
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169 std::ostrstream os; |
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170 |
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171 // No copying! |
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172 |
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173 octave_ostrstream (const octave_ostrstream&); |
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174 |
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175 octave_ostrstream& operator = (const octave_ostrstream&); |
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176 }; |
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177 |
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178 #endif |
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179 |
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180 /* |
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181 ;;; Local Variables: *** |
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182 ;;; mode: C++ *** |
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183 ;;; End: *** |
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184 */ |
