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annotate libinterp/corefcn/load-save.h @ 27919:1891570abac8

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update Octave Project Developers copyright for the new year In files that have the "Octave Project Developers" copyright notice, update for 2020.
author John W. Eaton <jwe@octave.org>
date Mon, 06 Jan 2020 22:29:51 -0500
parents b442ec6dda5c
children bd51beb6205e
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1 /*
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2
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3 Copyright (C) 1994-2020 The Octave Project Developers
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4
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5 See the file COPYRIGHT.md in the top-level directory of this distribution
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6 or <https://octave.org/COPYRIGHT.html/>.
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7
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91ab3cfc2376 [project @ 1994-08-13 20:11:17 by jwe]
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9 This file is part of Octave.
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10
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11 Octave is free software: you can redistribute it and/or modify it
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12 under the terms of the GNU General Public License as published by
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13 the Free Software Foundation, either version 3 of the License, or
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14 (at your option) any later version.
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15
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16 Octave is distributed in the hope that it will be useful, but
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17 WITHOUT ANY WARRANTY; without even the implied warranty of
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18 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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19 GNU General Public License for more details.
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21 You should have received a copy of the GNU General Public License
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22 along with Octave; see the file COPYING. If not, see
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23 <https://www.gnu.org/licenses/>.
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91ab3cfc2376 [project @ 1994-08-13 20:11:17 by jwe]
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25 */
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26
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27 #if ! defined (octave_load_save_h)
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28 #define octave_load_save_h 1
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29
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30 #include "octave-config.h"
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31
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32 #include <iosfwd>
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33 #include <string>
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34
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35 #include "mach-info.h"
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36
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37 #include "ovl.h"
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38
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39 namespace octave
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40 {
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41 class interpreter;
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42 class load_save_format;
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43 class symbol_info;
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44
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45 class load_save_system
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46 {
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47 public:
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48
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49 // FIXME: maybe MAT5 and MAT7 should be options to MAT_BINARY.
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50 // Similarly, save_as_floats may be an option for LS_BINARY,
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51 // LS_HDF5 etc.
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52
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53 enum format_type
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54 {
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55 TEXT,
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56 BINARY,
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57 MAT_ASCII,
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58 MAT_BINARY,
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59 MAT5_BINARY,
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60 MAT7_BINARY,
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61 HDF5,
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62 UNKNOWN
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63 };
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64
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65 enum format_options
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66 {
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67 // MAT_ASCII options (not exclusive)
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68 MAT_ASCII_LONG = 1,
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69 MAT_ASCII_TABS = 2,
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70 // MAT_BINARY options
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71 MAT_BINARY_V5 = 1,
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72 MAT_BINARY_V7,
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73 // zero means no option.
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74 NO_OPTION = 0
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75 };
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76
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77 load_save_system (interpreter& interp);
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78
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79 ~load_save_system (void);
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80
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81 load_save_system (const load_save_system&) = delete;
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82
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83 load_save_system& operator = (const load_save_system&) = delete;
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84
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85 octave_value crash_dumps_octave_core (const octave_value_list& args,
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86 int nargout);
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87
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88 bool crash_dumps_octave_core (void) const
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89 {
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90 return m_crash_dumps_octave_core;
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91 }
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92
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93 bool crash_dumps_octave_core (bool flag)
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94 {
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95 return set (m_crash_dumps_octave_core, flag);
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96 }
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97
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98 octave_value octave_core_file_limit (const octave_value_list& args,
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99 int nargout);
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100
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101 double octave_core_file_limit (void) const
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102 {
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103 return m_octave_core_file_limit;
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104 }
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105
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106 double octave_core_file_limit (double limit)
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107 {
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108 return set (m_octave_core_file_limit, limit);
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109 }
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110
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111 octave_value octave_core_file_name (const octave_value_list& args,
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112 int nargout);
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113
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114 std::string octave_core_file_name (void) const
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115 {
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116 return m_octave_core_file_name;
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117 }
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118
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119 std::string octave_core_file_name (const std::string& file)
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120 {
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121 return set (m_octave_core_file_name, file);
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122 }
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123
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124 octave_value save_default_options (const octave_value_list& args,
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125 int nargout);
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126
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127 std::string save_default_options (void) const
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128 {
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129 return m_save_default_options;
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130 }
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131
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132 std::string save_default_options (const std::string& options)
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133 {
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134 return set (m_save_default_options, options);
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135 }
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136
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137 octave_value octave_core_file_options (const octave_value_list& args,
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138 int nargout);
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139
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140 std::string octave_core_file_options (void) const
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141 {
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142 return m_octave_core_file_options;
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143 }
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144
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145 std::string octave_core_file_options (const std::string& options)
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146 {
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147 return set (m_octave_core_file_options, options);
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148 }
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149
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150 octave_value save_header_format_string (const octave_value_list& args,
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151 int nargout);
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152
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153 std::string save_header_format_string (void) const
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154 {
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155 return m_save_header_format_string;
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156 }
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157
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158 std::string save_header_format_string (const std::string& format)
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159 {
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160 return set (m_save_header_format_string, format);
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161 }
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162
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163 static load_save_format get_file_format (const std::string& fname,
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164 const std::string& orig_fname,
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165 bool& use_zlib,
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166 bool quiet = false);
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167
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168 // FIXME: this is probably not the best public interface for
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169 // loading and saving variables, but it is what is currently
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170 // needed for the Fload and Fsave functions.
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171
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172 octave_value load_vars (std::istream& stream,
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173 const std::string& orig_fname,
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174 const load_save_format& fmt,
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175 mach_info::float_format flt_fmt,
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176 bool list_only, bool swap, bool verbose,
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177 const string_vector& argv, int argv_idx,
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178 int argc, int nargout);
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179
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180 static string_vector
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181 parse_save_options (const string_vector& argv, load_save_format& fmt,
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182 bool& append, bool& save_as_floats, bool& use_zlib);
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183
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184 static string_vector
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185 parse_save_options (const std::string& arg, load_save_format& fmt,
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186 bool& append, bool& save_as_floats, bool& use_zlib);
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187
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188 void save_vars (const string_vector& argv, int argv_idx, int argc,
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189 std::ostream& os, const load_save_format& fmt,
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190 bool save_as_floats, bool write_header_info);
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191
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192 void dump_octave_core (void);
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193
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194 octave_value_list
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195 load (const octave_value_list& args = octave_value_list (),
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196 int nargout = 0);
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197
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198 octave_value_list
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199 save (const octave_value_list& args = octave_value_list (),
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200 int nargout = 0);
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201
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202 private:
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203
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204 interpreter& m_interpreter;
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205
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206 // Write octave-workspace file if Octave crashes or is killed by a
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207 // signal.
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208 bool m_crash_dumps_octave_core;
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209
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210 // The maximum amount of memory (in kilobytes) that we will
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211 // attempt to write to the Octave core file.
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212 double m_octave_core_file_limit;
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213
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214 // The name of the Octave core file.
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215 std::string m_octave_core_file_name;
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216
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217 // The default output format. May be one of "binary", "text",
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218 // "mat-binary", or "hdf5".
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219 std::string m_save_default_options;
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220
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221 // The output format for Octave core files.
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222 std::string m_octave_core_file_options;
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223
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224 // The format string for the comment line at the top of
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225 // text-format save files. Passed to strftime. Should begin with
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226 // '#' and contain no newline characters.
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227 std::string m_save_header_format_string;
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228
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229 void write_header (std::ostream& os, const load_save_format& fmt);
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230
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231 size_t save_vars (std::ostream& os, const std::string& pattern,
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232 const load_save_format& fmt, bool save_as_floats);
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233
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234 void do_save (std::ostream& os, const octave_value& tc,
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235 const std::string& name, const std::string& help,
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236 bool global, const load_save_format& fmt,
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237 bool save_as_floats);
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238
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239 void do_save (std::ostream& os, const symbol_info& syminfo,
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240 const load_save_format& fmt, bool save_as_floats);
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241
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242 size_t save_fields (std::ostream& os, const octave_scalar_map& m,
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243 const std::string& pattern,
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244 const load_save_format& fmt, bool save_as_floats);
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245
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246 void dump_octave_core (std::ostream& os, const char *fname,
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247 const load_save_format& fmt, bool save_as_floats);
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248
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249 void install_loaded_variable (const std::string& name,
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250 const octave_value& val,
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251 bool global, const std::string& /*doc*/);
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252
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253 static std::string init_save_header_format (void);
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254
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255 static load_save_format get_file_format (std::istream& file,
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256 const std::string& filename);
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257
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258 template <typename T>
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259 T set (T& var, const T& new_val)
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260 {
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261 T old_val = var;
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262 var = new_val;
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263 return old_val;
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264 }
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265 };
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266
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267 class load_save_format
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268 {
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269 public:
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270
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271 load_save_format (load_save_system::format_type type,
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272 load_save_system::format_options options = load_save_system::NO_OPTION)
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273 : m_type (type), m_options (options)
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274 { }
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275
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276 void set_type (load_save_system::format_type type) { m_type = type; }
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277
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278 load_save_system::format_type type (void) const { return m_type; }
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279
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280 void set_option (load_save_system::format_options option)
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281 {
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282 m_options |= option;
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283 }
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284
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285 int options (void) const { return m_options; }
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286
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287 private:
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288
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289 load_save_system::format_type m_type;
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290 int m_options;
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291 };
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292 }
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293
4791
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294 extern void dump_octave_core (void);
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295
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296 #endif