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annotate liboctave/system/oct-env.h @ 30050:0a8c6cafd7cc

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maint: use "m_" prefix for member variables in oct-env.h. * oct-env.cc, oct-env.h: use "m_" prefix for member variables class env.
author Rik <rik@octave.org>
date Wed, 25 Aug 2021 20:16:05 -0700
parents 7854d5752dd2
children 796f54d4ddbf
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1 ////////////////////////////////////////////////////////////////////////
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2 //
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3 // Copyright (C) 1996-2021 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
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6 // distribution or <https://octave.org/copyright/>.
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7 //
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8 // This file is part of Octave.
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9 //
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10 // Octave is free software: you can redistribute it and/or modify it
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11 // under the terms of the GNU General Public License as published by
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12 // the Free Software Foundation, either version 3 of the License, or
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13 // (at your option) any later version.
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14 //
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15 // Octave is distributed in the hope that it will be useful, but
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16 // WITHOUT ANY WARRANTY; without even the implied warranty of
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17 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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18 // GNU General Public License for more details.
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19 //
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20 // You should have received a copy of the GNU General Public License
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21 // along with Octave; see the file COPYING. If not, see
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22 // <https://www.gnu.org/licenses/>.
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23 //
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24 ////////////////////////////////////////////////////////////////////////
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25
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26 #if ! defined (octave_oct_env_h)
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27 #define octave_oct_env_h 1
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28
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29 #include "octave-config.h"
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30
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31 #include <string>
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32
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33 namespace octave
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34 {
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35 namespace sys
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36 {
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37 class
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38 OCTAVE_API
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39 env
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40 {
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41 protected:
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43 env (void);
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44
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45 public:
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46
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47 // No copying!
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48
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49 env (const env&) = delete;
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50
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51 env& operator = (const env&) = delete;
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52
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53 static std::string polite_directory_format (const std::string& name);
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55 static bool absolute_pathname (const std::string& s);
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57 static bool rooted_relative_pathname (const std::string& s);
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58
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59 static std::string base_pathname (const std::string& s);
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60
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61 static std::string
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62 make_absolute (const std::string& s,
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63 const std::string& dot_path = get_current_directory ());
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64
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65 static std::string get_current_directory (void);
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66
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67 static std::string get_home_directory (void);
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69 static std::string get_temp_directory (void);
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70
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71 static std::string get_user_config_directory (void);
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73 static std::string get_user_data_directory (void);
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75 static std::string get_program_name (void);
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77 static std::string get_program_invocation_name (void);
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79 static std::string get_user_name (void);
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81 static std::string get_host_name (void);
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82
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83 static std::string getenv (const std::string& name);
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84
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85 static void putenv (const std::string& name, const std::string& value);
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87 static bool have_x11_display (void);
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89 static bool chdir (const std::string& newdir);
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90
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91 static void set_program_name (const std::string& s);
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93 private:
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94
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95 static bool instance_ok (void);
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96
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97 std::string do_polite_directory_format (const std::string& name) const;
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99 bool do_absolute_pathname (const std::string& s) const;
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100
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101 bool do_rooted_relative_pathname (const std::string& s) const;
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102
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103 std::string do_base_pathname (const std::string& s) const;
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105 std::string do_make_absolute (const std::string& s,
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106 const std::string& dot_path) const;
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107
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108 std::string do_getcwd (void) const;
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109
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110 std::string do_get_home_directory (void) const;
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112 std::string do_get_temp_directory (void) const;
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114 std::string do_get_user_config_directory (void) const;
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115
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116 std::string do_get_user_data_directory (void) const;
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117
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118 std::string do_get_user_name (void) const;
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120 std::string do_get_host_name (void) const;
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121
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122 std::string do_getenv (const std::string& name) const;
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124 void do_putenv (const std::string& name, const std::string& value) const;
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126 bool do_chdir (const std::string& newdir);
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128 void do_set_program_name (const std::string& s) const;
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130 void pathname_backup (std::string& path, int n) const;
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132 void error (int) const;
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134 void error (const std::string&) const;
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135
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136 // The real thing.
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137 static env *m_instance;
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138
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139 static void cleanup_instance (void)
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140 { delete m_instance; m_instance = nullptr; }
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141
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142 // TRUE means follow symbolic links that point to directories just
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143 // as if they are real directories.
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144 bool m_follow_symbolic_links;
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145
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146 // TRUE means that pwd always give verbatim directory, regardless
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147 // of symbolic link following.
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148 bool m_verbatim_pwd;
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149
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150 // Where are we?
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151 mutable std::string m_current_directory;
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152
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153 // Etc.
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154 mutable std::string m_prog_name;
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155
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156 mutable std::string m_prog_invocation_name;
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157
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158 mutable std::string m_user_name;
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159
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160 mutable std::string m_host_name;
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161 };
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162 }
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163 }
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164
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165 #endif