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1 /* |
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2 |
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2847
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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, Inc., 51 Franklin Street, Fifth Floor, Boston, MA |
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20 02110-1301, USA. |
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21 |
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2939
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22 */ |
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23 |
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24 /* |
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25 |
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26 The functions listed below were adapted from similar functions from |
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27 GNU Bash, the Bourne Again SHell, copyright (C) 1987, 1989, 1991 Free |
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28 Software Foundation, Inc. |
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29 |
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30 do_history edit_history_readline |
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31 do_edit_history edit_history_add_hist |
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32 |
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33 */ |
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34 |
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240
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35 #ifdef HAVE_CONFIG_H |
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1192
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36 #include <config.h> |
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1
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37 #endif |
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38 |
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1343
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39 #include <cstdlib> |
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40 #include <cstring> |
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41 |
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1750
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42 #include <string> |
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43 |
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3503
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44 #include <fstream> |
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1350
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45 |
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46 #ifdef HAVE_UNISTD_H |
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2442
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47 #ifdef HAVE_SYS_TYPES_H |
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1
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48 #include <sys/types.h> |
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2442
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49 #endif |
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1
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50 #include <unistd.h> |
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51 #endif |
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1350
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52 |
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1799
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53 #include "cmd-hist.h" |
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1802
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54 #include "file-ops.h" |
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3016
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55 #include "lo-mappers.h" |
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2926
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56 #include "oct-env.h" |
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5305
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57 #include "oct-time.h" |
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1755
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58 #include "str-vec.h" |
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59 |
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2492
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60 #include <defaults.h> |
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1352
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61 #include "defun.h" |
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1
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62 #include "error.h" |
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3016
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63 #include "gripes.h" |
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1
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64 #include "input.h" |
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1742
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65 #include "oct-hist.h" |
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1750
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66 #include "oct-obj.h" |
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1352
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67 #include "pager.h" |
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3018
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68 #include "parse.h" |
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1352
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69 #include "sighandlers.h" |
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1690
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70 #include "sysdep.h" |
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1750
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71 #include "toplev.h" |
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1352
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72 #include "unwind-prot.h" |
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73 #include "utils.h" |
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2205
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74 #include "variables.h" |
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1
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75 |
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3018
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76 // TRUE means input is coming from temporary history file. |
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77 bool input_from_tmp_history_file = false; |
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168
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78 |
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3016
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79 // Where history is saved. |
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3523
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80 static std::string Vhistory_file; |
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3016
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81 |
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82 // The number of lines to keep in the history file. |
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83 static int Vhistory_size; |
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84 |
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5305
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85 // The format of the timestamp marker written to the history file when |
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86 // Octave exits. |
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87 static std::string Vhistory_timestamp_format_string; |
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88 |
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3016
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89 // TRUE if we are saving history. |
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3018
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90 bool Vsaving_history = true; |
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3016
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91 |
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581
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92 // Get some default values, possibly reading them from the |
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93 // environment. |
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94 |
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5305
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95 static std::string |
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1
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96 default_history_file (void) |
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97 { |
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3523
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98 std::string file; |
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1
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99 |
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3523
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100 std::string env_file = octave_env::getenv ("OCTAVE_HISTFILE"); |
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1755
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101 |
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2926
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102 if (! env_file.empty ()) |
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1
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103 { |
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3551
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104 std::fstream f (env_file.c_str (), (std::ios::in | std::ios::out)); |
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1755
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105 |
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529
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106 if (f) |
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1
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107 { |
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1755
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108 file = env_file; |
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1
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109 f.close (); |
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110 } |
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111 } |
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112 |
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1755
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113 if (file.empty ()) |
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114 { |
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3523
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115 std::string home_dir = octave_env::get_home_directory (); |
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2926
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116 |
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117 if (! home_dir.empty ()) |
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1969
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118 { |
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2926
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119 file = home_dir; |
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1969
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120 file.append ("/.octave_hist"); |
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121 } |
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1755
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122 else |
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123 file = ".octave_hist"; |
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124 } |
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1
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125 |
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126 return file; |
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127 } |
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128 |
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5305
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129 static int |
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130 default_history_size (void) |
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131 { |
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132 int size = 1024; |
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133 |
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134 std::string env_size = octave_env::getenv ("OCTAVE_HISTSIZE"); |
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135 |
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136 if (! env_size.empty ()) |
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137 { |
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138 int val; |
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139 |
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140 if (sscanf (env_size.c_str (), "%d", &val) == 1) |
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141 size = val > 0 ? val : 0; |
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142 } |
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143 |
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144 return size; |
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145 } |
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146 |
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147 static std::string |
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148 default_history_timestamp_format (void) |
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149 { |
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150 return |
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151 std::string ("# Octave " OCTAVE_VERSION ", %a %b %d %H:%M:%S %Y %Z <") |
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152 + octave_env::get_user_name () |
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153 + std::string ("@") |
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154 + octave_env::get_host_name () |
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155 + std::string (">"); |
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156 } |
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157 |
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581
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158 // Display, save, or load history. Stolen and modified from bash. |
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159 // |
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160 // Arg of -w FILENAME means write file, arg of -r FILENAME |
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161 // means read file, arg of -q means don't number lines. Arg of N |
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162 // means only display that many items. |
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163 |
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1755
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164 static void |
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165 do_history (int argc, const string_vector& argv) |
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1
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166 { |
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167 int numbered_output = 1; |
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168 |
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1755
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169 int i; |
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170 for (i = 1; i < argc; i++) |
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1
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171 { |
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3523
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172 std::string option = argv[i]; |
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2435
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173 |
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174 if (option == "-r" || option == "-w" || option == "-a" |
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175 || option == "-n") |
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1
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176 { |
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1755
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177 if (i < argc - 1) |
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1799
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178 { |
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3523
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179 std::string file = file_ops::tilde_expand (argv[i+1]); |
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2926
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180 command_history::set_file (file); |
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1799
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181 } |
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1
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182 |
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2435
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183 if (option == "-a") |
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184 // Append `new' lines to file. |
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2926
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185 command_history::append (); |
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2435
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186 |
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187 else if (option == "-w") |
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188 // Write entire history. |
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2926
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189 command_history::write (); |
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777
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190 |
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2435
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191 else if (option == "-r") |
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192 // Read entire file. |
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2926
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193 command_history::read (); |
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777
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194 |
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2435
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195 else if (option == "-n") |
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196 // Read `new' history from file. |
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2926
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197 command_history::read_range (); |
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777
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198 |
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2435
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199 else |
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200 panic_impossible (); |
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201 |
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1
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202 return; |
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203 } |
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1755
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204 else if (argv[i] == "-q") |
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1
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205 numbered_output = 0; |
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1755
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206 else if (argv[i] == "--") |
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1
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207 { |
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1755
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208 i++; |
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1
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209 break; |
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210 } |
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211 else |
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212 break; |
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213 } |
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214 |
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1799
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215 int limit = -1; |
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1
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216 |
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1755
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217 if (i < argc) |
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1
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218 { |
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1755
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219 if (sscanf (argv[i].c_str (), "%d", &limit) != 1) |
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1
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220 { |
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1755
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221 if (argv[i][0] == '-') |
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222 error ("history: unrecognized option `%s'", argv[i].c_str ()); |
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1
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223 else |
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1755
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224 error ("history: bad non-numeric arg `%s'", argv[i].c_str ()); |
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1799
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225 |
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1
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226 return; |
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227 } |
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228 |
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229 if (limit < 0) |
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230 limit = -limit; |
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1799
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231 } |
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1
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232 |
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2926
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233 string_vector hlist = command_history::list (limit, numbered_output); |
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1
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234 |
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1799
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235 int len = hlist.length (); |
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236 |
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2095
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237 for (i = 0; i < len; i++) |
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238 octave_stdout << hlist[i] << "\n"; |
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1
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239 } |
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240 |
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581
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241 // Read the edited history lines from STREAM and return them |
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242 // one at a time. This can read unlimited length lines. The |
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2434
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243 // caller should free the storage. |
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581
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244 |
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1
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245 static char * |
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3551
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246 edit_history_readline (std::fstream& stream) |
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1
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247 { |
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248 char c; |
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249 int line_len = 128; |
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250 int lindex = 0; |
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251 char *line = new char [line_len]; |
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252 line[0] = '\0'; |
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253 |
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254 while (stream.get (c)) |
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255 { |
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256 if (lindex + 2 >= line_len) |
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257 { |
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258 char *tmp_line = new char [line_len += 128]; |
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259 strcpy (tmp_line, line); |
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260 delete [] line; |
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261 line = tmp_line; |
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262 } |
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263 |
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264 if (c == '\n') |
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265 { |
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266 line[lindex++] = '\n'; |
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267 line[lindex++] = '\0'; |
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268 return line; |
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269 } |
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270 else |
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271 line[lindex++] = c; |
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272 } |
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273 |
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274 if (! lindex) |
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275 { |
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276 delete [] line; |
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529
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277 return 0; |
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1
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278 } |
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279 |
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280 if (lindex + 2 >= line_len) |
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281 { |
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282 char *tmp_line = new char [lindex+3]; |
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283 strcpy (tmp_line, line); |
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284 delete [] line; |
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285 line = tmp_line; |
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286 } |
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287 |
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1358
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288 // Finish with newline if none in file. |
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1
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289 |
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290 line[lindex++] = '\n'; |
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291 line[lindex++] = '\0'; |
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292 return line; |
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293 } |
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294 |
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581
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295 // Use `command' to replace the last entry in the history list, which, |
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296 // by this time, is `run_history blah...'. The intent is that the |
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1799
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297 // new command becomes the history entry, and that `fc' should never |
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581
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298 // appear in the history list. This way you can do `run_history' to |
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299 // your heart's content. |
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300 |
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64
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301 static void |
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3523
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302 edit_history_repl_hist (const std::string& command) |
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64
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303 { |
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1799
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304 if (! command.empty ()) |
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305 { |
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2926
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306 string_vector hlist = command_history::list (); |
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64
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307 |
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1799
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308 int len = hlist.length (); |
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64
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309 |
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1799
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310 if (len > 0) |
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311 { |
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312 int i = len - 1; |
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64
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313 |
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3523
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314 std::string histent = command_history::get_entry (i); |
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64
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315 |
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1799
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316 if (! histent.empty ()) |
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317 { |
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3523
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318 std::string cmd = command; |
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64
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319 |
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1799
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320 int cmd_len = cmd.length (); |
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64
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321 |
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1799
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322 if (cmd[cmd_len - 1] == '\n') |
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323 cmd.resize (cmd_len - 1); |
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64
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324 |
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1799
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325 if (! cmd.empty ()) |
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2926
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326 command_history::replace_entry (i, cmd); |
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1799
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327 } |
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64
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328 } |
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329 } |
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330 } |
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331 |
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1
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332 static void |
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3523
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333 edit_history_add_hist (const std::string& line) |
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1
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334 { |
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1799
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335 if (! line.empty ()) |
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1
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336 { |
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3523
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337 std::string tmp = line; |
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1
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338 |
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1799
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339 int len = tmp.length (); |
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340 |
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341 if (len > 0 && tmp[len-1] == '\n') |
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342 tmp.resize (len - 1); |
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343 |
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344 if (! tmp.empty ()) |
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2926
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345 command_history::add (tmp); |
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1
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346 } |
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347 } |
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348 |
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3536
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349 static std::string |
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1755
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350 mk_tmp_hist_file (int argc, const string_vector& argv, |
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2804
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351 int insert_curr, const char *warn_for) |
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1
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352 { |
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3523
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353 std::string retval; |
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1
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354 |
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2926
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355 string_vector hlist = command_history::list (); |
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1
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356 |
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1799
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357 int hist_count = hlist.length (); |
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1
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358 |
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1358
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359 // The current command line is already part of the history list by |
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360 // the time we get to this point. Delete it from the list. |
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1
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361 |
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362 hist_count -= 2; |
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1799
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363 |
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64
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364 if (! insert_curr) |
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2926
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365 command_history::remove (hist_count); |
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1799
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366 |
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1
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367 hist_count--; |
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368 |
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1358
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369 // If no numbers have been specified, the default is to edit the |
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370 // last command in the history list. |
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1
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371 |
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372 int hist_end = hist_count; |
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373 int hist_beg = hist_count; |
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374 int reverse = 0; |
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375 |
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1358
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376 // Process options. |
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1
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377 |
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378 int usage_error = 0; |
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379 if (argc == 3) |
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380 { |
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1755
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381 if (sscanf (argv[1].c_str (), "%d", &hist_beg) != 1 |
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382 || sscanf (argv[2].c_str (), "%d", &hist_end) != 1) |
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1
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383 usage_error = 1; |
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384 else |
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385 { |
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386 hist_beg--; |
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387 hist_end--; |
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388 } |
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389 } |
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390 else if (argc == 2) |
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391 { |
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1755
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392 if (sscanf (argv[1].c_str (), "%d", &hist_beg) != 1) |
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1
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393 usage_error = 1; |
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394 else |
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395 { |
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396 hist_beg--; |
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397 hist_end = hist_beg; |
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398 } |
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399 } |
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400 |
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401 if (hist_beg < 0 || hist_end < 0 || hist_beg > hist_count |
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402 || hist_end > hist_count) |
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403 { |
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64
|
404 error ("%s: history specification out of range", warn_for); |
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1799
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405 return retval; |
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1
|
406 } |
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407 |
|
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408 if (usage_error) |
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|
409 { |
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64
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410 usage ("%s [first] [last]", warn_for); |
|
1799
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411 return retval; |
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1
|
412 } |
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413 |
|
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414 if (hist_end < hist_beg) |
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|
415 { |
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416 int t = hist_end; |
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417 hist_end = hist_beg; |
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418 hist_beg = t; |
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419 reverse = 1; |
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420 } |
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421 |
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3523
|
422 std::string name = file_ops::tempnam ("", "oct-"); |
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1
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423 |
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3551
|
424 std::fstream file (name.c_str (), std::ios::out); |
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64
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425 |
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1
|
426 if (! file) |
|
|
427 { |
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1755
|
428 error ("%s: couldn't open temporary file `%s'", warn_for, |
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429 name.c_str ()); |
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1799
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430 return retval; |
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1
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431 } |
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432 |
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433 if (reverse) |
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|
434 { |
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435 for (int i = hist_end; i >= hist_beg; i--) |
|
1799
|
436 file << hlist[i] << "\n"; |
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1
|
437 } |
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438 else |
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439 { |
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440 for (int i = hist_beg; i <= hist_end; i++) |
|
1799
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441 file << hlist[i] << "\n"; |
|
1
|
442 } |
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443 |
|
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444 file.close (); |
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|
445 |
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1755
|
446 return name; |
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64
|
447 } |
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448 |
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1755
|
449 static void |
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|
450 do_edit_history (int argc, const string_vector& argv) |
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64
|
451 { |
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3523
|
452 std::string name = mk_tmp_hist_file (argc, argv, 0, "edit_history"); |
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64
|
453 |
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1755
|
454 if (name.empty ()) |
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64
|
455 return; |
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456 |
|
1358
|
457 // Call up our favorite editor on the file of commands. |
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1
|
458 |
|
3523
|
459 std::string cmd = Veditor; |
|
4469
|
460 cmd.append (" \""); |
|
1799
|
461 cmd.append (name); |
|
4469
|
462 cmd.append ("\""); |
|
1
|
463 |
|
1358
|
464 // Ignore interrupts while we are off editing commands. Should we |
|
|
465 // maybe avoid using system()? |
|
1
|
466 |
|
2705
|
467 volatile octave_interrupt_handler old_interrupt_handler |
|
2554
|
468 = octave_ignore_interrupts (); |
|
1443
|
469 |
|
1799
|
470 system (cmd.c_str ()); |
|
1443
|
471 |
|
2554
|
472 octave_set_interrupt_handler (old_interrupt_handler); |
|
1
|
473 |
|
1358
|
474 // Write the commands to the history file since parse_and_execute |
|
|
475 // disables command line history while it executes. |
|
1
|
476 |
|
3551
|
477 std::fstream file (name.c_str (), std::ios::in); |
|
1
|
478 |
|
|
479 char *line; |
|
64
|
480 int first = 1; |
|
529
|
481 while ((line = edit_history_readline (file)) != 0) |
|
1
|
482 { |
|
1358
|
483 // Skip blank lines. |
|
1
|
484 |
|
|
485 if (line[0] == '\n') |
|
|
486 { |
|
|
487 delete [] line; |
|
|
488 continue; |
|
|
489 } |
|
|
490 |
|
64
|
491 if (first) |
|
|
492 { |
|
|
493 first = 0; |
|
|
494 edit_history_repl_hist (line); |
|
|
495 } |
|
|
496 else |
|
|
497 edit_history_add_hist (line); |
|
1
|
498 } |
|
|
499 |
|
|
500 file.close (); |
|
|
501 |
|
1358
|
502 // Turn on command echo, so the output from this will make better |
|
|
503 // sense. |
|
1
|
504 |
|
2985
|
505 unwind_protect::begin_frame ("do_edit_history"); |
|
3018
|
506 |
|
2205
|
507 unwind_protect_int (Vecho_executing_commands); |
|
3018
|
508 unwind_protect_bool (input_from_tmp_history_file); |
|
|
509 |
|
2205
|
510 Vecho_executing_commands = ECHO_CMD_LINE; |
|
3018
|
511 input_from_tmp_history_file = true; |
|
1
|
512 |
|
2897
|
513 parse_and_execute (name); |
|
1
|
514 |
|
2985
|
515 unwind_protect::run_frame ("do_edit_history"); |
|
1
|
516 |
|
1358
|
517 // Delete the temporary file. Should probably be done with an |
|
|
518 // unwind_protect. |
|
1
|
519 |
|
1755
|
520 unlink (name.c_str ()); |
|
1
|
521 } |
|
|
522 |
|
1755
|
523 static void |
|
|
524 do_run_history (int argc, const string_vector& argv) |
|
64
|
525 { |
|
3523
|
526 std::string name = mk_tmp_hist_file (argc, argv, 1, "run_history"); |
|
64
|
527 |
|
1755
|
528 if (name.empty ()) |
|
64
|
529 return; |
|
|
530 |
|
1799
|
531 // Turn on command echo so the output from this will make better |
|
1358
|
532 // sense. |
|
64
|
533 |
|
2985
|
534 unwind_protect::begin_frame ("do_run_history"); |
|
3018
|
535 |
|
2205
|
536 unwind_protect_int (Vecho_executing_commands); |
|
3018
|
537 unwind_protect_bool (input_from_tmp_history_file); |
|
|
538 |
|
2205
|
539 Vecho_executing_commands = ECHO_CMD_LINE; |
|
3018
|
540 input_from_tmp_history_file = true; |
|
64
|
541 |
|
2897
|
542 parse_and_execute (name); |
|
64
|
543 |
|
2985
|
544 unwind_protect::run_frame ("do_run_history"); |
|
64
|
545 |
|
1799
|
546 // Delete the temporary file. |
|
|
547 |
|
5775
|
548 // FIXME -- should probably be done using an unwind_protect. |
|
64
|
549 |
|
1755
|
550 unlink (name.c_str ()); |
|
64
|
551 } |
|
|
552 |
|
5305
|
553 void |
|
|
554 octave_history_write_timestamp (void) |
|
|
555 { |
|
|
556 octave_localtime now; |
|
|
557 |
|
|
558 std::string timestamp = now.strftime (Vhistory_timestamp_format_string); |
|
|
559 |
|
|
560 if (! timestamp.empty ()) |
|
|
561 command_history::add (timestamp); |
|
|
562 } |
|
|
563 |
|
4208
|
564 DEFCMD (edit_history, args, , |
|
3332
|
565 "-*- texinfo -*-\n\ |
|
|
566 @deffn {Command} edit_history options\n\ |
|
|
567 If invoked with no arguments, @code{edit_history} allows you to edit the\n\ |
|
|
568 history list using the editor named by the variable @code{EDITOR}. The\n\ |
|
|
569 commands to be edited are first copied to a temporary file. When you\n\ |
|
|
570 exit the editor, Octave executes the commands that remain in the file.\n\ |
|
|
571 It is often more convenient to use @code{edit_history} to define functions \n\ |
|
|
572 rather than attempting to enter them directly on the command line.\n\ |
|
|
573 By default, the block of commands is executed as soon as you exit the\n\ |
|
|
574 editor. To avoid executing any commands, simply delete all the lines\n\ |
|
|
575 from the buffer before exiting the editor.\n\ |
|
|
576 \n\ |
|
|
577 The @code{edit_history} command takes two optional arguments specifying\n\ |
|
|
578 the history numbers of first and last commands to edit. For example,\n\ |
|
|
579 the command\n\ |
|
529
|
580 \n\ |
|
3332
|
581 @example\n\ |
|
|
582 edit_history 13\n\ |
|
|
583 @end example\n\ |
|
|
584 \n\ |
|
|
585 @noindent\n\ |
|
|
586 extracts all the commands from the 13th through the last in the history\n\ |
|
|
587 list. The command\n\ |
|
|
588 \n\ |
|
|
589 @example\n\ |
|
|
590 edit_history 13 169\n\ |
|
|
591 @end example\n\ |
|
|
592 \n\ |
|
|
593 @noindent\n\ |
|
|
594 only extracts commands 13 through 169. Specifying a larger number for\n\ |
|
|
595 the first command than the last command reverses the list of commands\n\ |
|
|
596 before placing them in the buffer to be edited. If both arguments are\n\ |
|
|
597 omitted, the previous command in the history list is used.\n\ |
|
3333
|
598 @end deffn") |
|
529
|
599 { |
|
2086
|
600 octave_value_list retval; |
|
529
|
601 |
|
1755
|
602 int argc = args.length () + 1; |
|
|
603 |
|
1968
|
604 string_vector argv = args.make_argv ("edit_history"); |
|
1755
|
605 |
|
|
606 if (error_state) |
|
|
607 return retval; |
|
529
|
608 |
|
|
609 do_edit_history (argc, argv); |
|
|
610 |
|
|
611 return retval; |
|
|
612 } |
|
|
613 |
|
4208
|
614 DEFCMD (history, args, , |
|
3332
|
615 "-*- texinfo -*-\n\ |
|
|
616 @deffn {Command} history options\n\ |
|
|
617 If invoked with no arguments, @code{history} displays a list of commands\n\ |
|
|
618 that you have executed. Valid options are:\n\ |
|
|
619 \n\ |
|
|
620 @table @code\n\ |
|
|
621 @item -w @var{file}\n\ |
|
|
622 Write the current history to the file @var{file}. If the name is\n\ |
|
|
623 omitted, use the default history file (normally @file{~/.octave_hist}).\n\ |
|
529
|
624 \n\ |
|
3332
|
625 @item -r @var{file}\n\ |
|
|
626 Read the file @var{file}, replacing the current history list with its\n\ |
|
|
627 contents. If the name is omitted, use the default history file\n\ |
|
|
628 (normally @file{~/.octave_hist}).\n\ |
|
|
629 \n\ |
|
3499
|
630 @item @var{n}\n\ |
|
|
631 Only display the most recent @var{n} lines of history.\n\ |
|
3332
|
632 \n\ |
|
|
633 @item -q\n\ |
|
|
634 Don't number the displayed lines of history. This is useful for cutting\n\ |
|
|
635 and pasting commands if you are using the X Window System.\n\ |
|
|
636 @end table\n\ |
|
|
637 \n\ |
|
|
638 For example, to display the five most recent commands that you have\n\ |
|
|
639 typed without displaying line numbers, use the command\n\ |
|
|
640 @kbd{history -q 5}.\n\ |
|
3333
|
641 @end deffn") |
|
529
|
642 { |
|
2086
|
643 octave_value_list retval; |
|
529
|
644 |
|
1755
|
645 int argc = args.length () + 1; |
|
|
646 |
|
1968
|
647 string_vector argv = args.make_argv ("history"); |
|
1755
|
648 |
|
|
649 if (error_state) |
|
|
650 return retval; |
|
529
|
651 |
|
|
652 do_history (argc, argv); |
|
|
653 |
|
|
654 return retval; |
|
|
655 } |
|
|
656 |
|
4208
|
657 DEFCMD (run_history, args, , |
|
3332
|
658 "-*- texinfo -*-\n\ |
|
|
659 @deffn {Command} run_history [first] [last]\n\ |
|
|
660 Similar to @code{edit_history}, except that the editor is not invoked,\n\ |
|
|
661 and the commands are simply executed as they appear in the history list.\n\ |
|
3333
|
662 @end deffn") |
|
529
|
663 { |
|
2086
|
664 octave_value_list retval; |
|
529
|
665 |
|
1755
|
666 int argc = args.length () + 1; |
|
|
667 |
|
1968
|
668 string_vector argv = args.make_argv ("run_history"); |
|
1755
|
669 |
|
|
670 if (error_state) |
|
|
671 return retval; |
|
529
|
672 |
|
|
673 do_run_history (argc, argv); |
|
|
674 |
|
|
675 return retval; |
|
|
676 } |
|
|
677 |
|
3016
|
678 static int |
|
|
679 history_size (void) |
|
|
680 { |
|
|
681 double val; |
|
|
682 if (builtin_real_scalar_variable ("history_size", val) |
|
|
683 && ! xisnan (val)) |
|
|
684 { |
|
|
685 int ival = NINT (val); |
|
|
686 if (ival >= 0 && ival == val) |
|
|
687 { |
|
|
688 Vhistory_size = ival; |
|
|
689 command_history::set_size (ival); |
|
|
690 return 0; |
|
|
691 } |
|
|
692 } |
|
|
693 gripe_invalid_value_specified ("history_size"); |
|
|
694 return -1; |
|
|
695 } |
|
|
696 |
|
|
697 static int |
|
|
698 history_file (void) |
|
|
699 { |
|
|
700 int status = 0; |
|
|
701 |
|
3523
|
702 std::string s = builtin_string_variable ("history_file"); |
|
3016
|
703 |
|
|
704 if (s.empty ()) |
|
|
705 { |
|
|
706 gripe_invalid_value_specified ("history_file"); |
|
|
707 status = -1; |
|
|
708 } |
|
|
709 else |
|
|
710 { |
|
|
711 Vhistory_file = s; |
|
|
712 command_history::set_file (file_ops::tilde_expand (s)); |
|
|
713 } |
|
|
714 |
|
|
715 return status; |
|
|
716 } |
|
|
717 |
|
|
718 static int |
|
5305
|
719 history_timestamp_format_string (void) |
|
|
720 { |
|
|
721 int status = 0; |
|
|
722 |
|
|
723 octave_value v = builtin_any_variable ("history_timestamp_format_string"); |
|
|
724 |
|
|
725 if (v.is_string ()) |
|
|
726 Vhistory_timestamp_format_string = v.string_value (); |
|
|
727 else |
|
|
728 { |
|
|
729 gripe_invalid_value_specified ("history_timestamp_format_string"); |
|
|
730 status = -1; |
|
|
731 } |
|
|
732 |
|
|
733 return status; |
|
|
734 } |
|
|
735 |
|
|
736 static int |
|
3016
|
737 saving_history (void) |
|
|
738 { |
|
|
739 Vsaving_history = check_preference ("saving_history"); |
|
|
740 |
|
|
741 command_history::ignore_entries (! Vsaving_history); |
|
|
742 |
|
|
743 return 0; |
|
|
744 } |
|
|
745 |
|
|
746 void |
|
|
747 symbols_of_oct_hist (void) |
|
|
748 { |
|
3258
|
749 DEFVAR (history_file, default_history_file (), history_file, |
|
3332
|
750 "-*- texinfo -*-\n\ |
|
|
751 @defvr {Built-in Variable} history_file\n\ |
|
|
752 This variable specifies the name of the file used to store command\n\ |
|
|
753 history. The default value is @code{\"~/.octave_hist\"}, but may be\n\ |
|
|
754 overridden by the environment variable @code{OCTAVE_HISTFILE}.\n\ |
|
3333
|
755 @end defvr"); |
|
3016
|
756 |
|
|
757 double tmp_hist_size = default_history_size (); |
|
|
758 |
|
3258
|
759 DEFVAR (history_size, tmp_hist_size, history_size, |
|
3332
|
760 "-*- texinfo -*-\n\ |
|
|
761 @defvr {Built-in Variable} history_size\n\ |
|
|
762 This variable specifies how many entries to store in the history file.\n\ |
|
|
763 The default value is @code{1024}, but may be overridden by the\n\ |
|
|
764 environment variable @code{OCTAVE_HISTSIZE}.\n\ |
|
3333
|
765 @end defvr"); |
|
3016
|
766 |
|
5305
|
767 DEFVAR (history_timestamp_format_string, |
|
|
768 default_history_timestamp_format (), |
|
|
769 history_timestamp_format_string, |
|
|
770 "-*- texinfo -*-\n\ |
|
|
771 @defvr {Built-in Variable} history_timestamp_format_string\n\ |
|
|
772 This variable specifies the the format string for the comment line\n\ |
|
|
773 that is written to the history file when Octave exits. The format\n\ |
|
|
774 string is passed to @code{strftime}. The default value is\n\ |
|
|
775 \n\ |
|
|
776 @example\n\ |
|
|
777 \"# Octave VERSION, %a %b %d %H:%M:%S %Y %Z <USER@@HOST>\"\n\ |
|
|
778 @end example\n\ |
|
|
779 @seealso{strftime}\n\ |
|
|
780 @end defvr"); |
|
|
781 |
|
4233
|
782 DEFVAR (saving_history, true, saving_history, |
|
3332
|
783 "-*- texinfo -*-\n\ |
|
|
784 @defvr {Built-in Variable} saving_history\n\ |
|
|
785 If the value of @code{saving_history} is nonzero, command entered\n\ |
|
|
786 on the command line are saved in the file specified by the variable\n\ |
|
|
787 @code{history_file}.\n\ |
|
3333
|
788 @end defvr"); |
|
3016
|
789 } |
|
|
790 |
|
1
|
791 /* |
|
|
792 ;;; Local Variables: *** |
|
|
793 ;;; mode: C++ *** |
|
|
794 ;;; End: *** |
|
|
795 */ |
