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annotate liboctave/system/oct-group.h @ 28223:45763d59cb4f stable

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use nullptr instead of NULL or 0 in a few more places * QWinTerminalImpl.cpp, oct-procbuf.cc, audioread.cc, jit-typeinfo.cc, lo-sysdep.cc, url-transfer.cc, shared-fcns.h: Replace NULL and 0 with nullptr where appropriate.
author John W. Eaton <jwe@octave.org>
date Wed, 15 Apr 2020 15:55:32 -0400
parents bd51beb6205e
children 0a5b15007766
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1 ////////////////////////////////////////////////////////////////////////
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2 //
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3 // Copyright (C) 1996-2020 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
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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_group_h)
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27 #define octave_oct_group_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 #include <sys/types.h>
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34
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35 #include "str-vec.h"
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36
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37 namespace octave
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38 {
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39 namespace sys
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40 {
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41 class
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42 OCTAVE_API
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43 group
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44 {
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45 public:
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46
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47 group (void)
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48 : m_name (), m_passwd (), m_gid (0), m_mem (), valid (false)
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49 { }
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50
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51 group (const group& gr)
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52 : m_name (gr.m_name), m_passwd (gr.m_passwd),
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53 m_gid (gr.m_gid), m_mem (gr.m_mem), valid (gr.valid)
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54 { }
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55
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56 group& operator = (const group& gr)
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57 {
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58 if (this != &gr)
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59 {
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60 m_name = gr.m_name;
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61 m_passwd = gr.m_passwd;
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62 m_gid = gr.m_gid;
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63 m_mem = gr.m_mem;
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64 valid = gr.valid;
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65 }
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66
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67 return *this;
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68 }
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70 std::string name (void) const;
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71
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72 std::string passwd (void) const;
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73
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74 gid_t gid (void) const;
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75
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76 string_vector mem (void) const;
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77
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78 bool ok (void) const { return valid; }
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79
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80 operator bool () const { return ok (); }
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81
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82 static group getgrent (void);
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83 static group getgrent (std::string& msg);
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84
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85 static group getgrgid (gid_t gid);
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86 static group getgrgid (gid_t gid, std::string& msg);
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87
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88 static group getgrnam (const std::string& nm);
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89 static group getgrnam (const std::string& nm, std::string& msg);
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90
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91 static int setgrent (void);
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92 static int setgrent (std::string& msg);
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93
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94 static int endgrent (void);
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95 static int endgrent (std::string& msg);
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96
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97 private:
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98
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99 // The group name.
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100 std::string m_name;
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101
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102 // The group password.
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103 std::string m_passwd;
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104
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105 // The numeric group id.
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106 gid_t m_gid;
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107
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108 // The members of the group;
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109 string_vector m_mem;
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110
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111 // Flag that says whether we have been properly initialized.
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112 bool valid;
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113
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114 // This is how we will create an group object from a pointer
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115 // to a struct group.
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116 group (void *p, std::string& msg);
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117 };
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118 }
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119 }
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120
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121 #endif