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1 /* |
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2 |
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3 Copyright (C) 1996, 1997 John W. Eaton |
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4 |
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5 This file is part of Octave. |
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6 |
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7 Octave is free software; you can redistribute it and/or modify it |
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8 under the terms of the GNU General Public License as published by the |
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9 Free Software Foundation; either version 3 of the License, or (at your |
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10 option) any 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, see |
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19 <http://www.gnu.org/licenses/>. |
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20 |
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21 */ |
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22 |
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23 /* |
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24 |
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25 The functions listed below were adapted from similar functions from |
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26 GNU Bash, the Bourne Again SHell, copyright (C) 1987, 1989, 1991 Free |
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27 Software Foundation, Inc. |
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28 |
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29 do_history edit_history_readline |
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30 do_edit_history edit_history_add_hist |
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31 |
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32 */ |
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33 |
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240
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34 #ifdef HAVE_CONFIG_H |
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1192
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35 #include <config.h> |
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36 #endif |
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37 |
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38 #include <cstdlib> |
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39 #include <cstring> |
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40 |
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1750
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41 #include <string> |
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42 |
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3503
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43 #include <fstream> |
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44 |
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45 #ifdef HAVE_UNISTD_H |
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2442
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46 #ifdef HAVE_SYS_TYPES_H |
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47 #include <sys/types.h> |
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48 #endif |
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49 #include <unistd.h> |
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50 #endif |
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51 |
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52 #include "cmd-hist.h" |
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1802
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53 #include "file-ops.h" |
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3016
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54 #include "lo-mappers.h" |
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2926
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55 #include "oct-env.h" |
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5305
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56 #include "oct-time.h" |
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57 #include "str-vec.h" |
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58 |
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2492
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59 #include <defaults.h> |
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1352
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60 #include "defun.h" |
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61 #include "error.h" |
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3016
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62 #include "gripes.h" |
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1
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63 #include "input.h" |
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1742
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64 #include "oct-hist.h" |
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1750
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65 #include "oct-obj.h" |
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1352
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66 #include "pager.h" |
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3018
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67 #include "parse.h" |
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1352
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68 #include "sighandlers.h" |
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1690
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69 #include "sysdep.h" |
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1750
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70 #include "toplev.h" |
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1352
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71 #include "unwind-prot.h" |
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72 #include "utils.h" |
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2205
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73 #include "variables.h" |
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74 |
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3018
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75 // TRUE means input is coming from temporary history file. |
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76 bool input_from_tmp_history_file = false; |
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168
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77 |
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78 static std::string |
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79 default_history_file (void) |
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80 { |
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81 std::string file; |
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82 |
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83 std::string env_file = octave_env::getenv ("OCTAVE_HISTFILE"); |
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84 |
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85 if (! env_file.empty ()) |
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86 file = env_file; |
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87 |
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88 if (file.empty ()) |
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89 { |
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90 std::string home_dir = octave_env::get_home_directory (); |
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91 |
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92 if (! home_dir.empty ()) |
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93 { |
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94 file = home_dir; |
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95 if (! file_ops::is_dir_sep (file[file.length()-1])) |
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96 file.push_back (file_ops::dir_sep_char); |
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97 file.append (".octave_hist"); |
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98 } |
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99 else |
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100 file = ".octave_hist"; |
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101 } |
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102 |
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103 return file; |
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104 } |
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105 |
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106 // Where history is saved. |
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107 static std::string Vhistory_file = default_history_file (); |
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108 |
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109 static int |
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110 default_history_size (void) |
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111 { |
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112 int size = 1024; |
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113 |
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114 std::string env_size = octave_env::getenv ("OCTAVE_HISTSIZE"); |
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115 |
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116 if (! env_size.empty ()) |
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117 { |
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118 int val; |
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119 |
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120 if (sscanf (env_size.c_str (), "%d", &val) == 1) |
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121 size = val > 0 ? val : 0; |
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122 } |
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123 |
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124 return size; |
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125 } |
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126 |
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127 // The number of lines to keep in the history file. |
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128 static int Vhistory_size = default_history_size (); |
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129 |
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130 static std::string |
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131 default_history_timestamp_format (void) |
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132 { |
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133 return |
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134 std::string ("# Octave " OCTAVE_VERSION ", %a %b %d %H:%M:%S %Y %Z <") |
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135 + octave_env::get_user_name () |
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136 + std::string ("@") |
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137 + octave_env::get_host_name () |
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138 + std::string (">"); |
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139 } |
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140 |
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141 // The format of the timestamp marker written to the history file when |
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142 // Octave exits. |
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143 static std::string Vhistory_timestamp_format_string |
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144 = default_history_timestamp_format (); |
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145 |
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146 // TRUE if we are saving history. |
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147 bool Vsaving_history = true; |
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148 |
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149 // Display, save, or load history. Stolen and modified from bash. |
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150 // |
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151 // Arg of -w FILENAME means write file, arg of -r FILENAME |
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152 // means read file, arg of -q means don't number lines. Arg of N |
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153 // means only display that many items. |
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154 |
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155 static void |
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156 do_history (int argc, const string_vector& argv) |
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157 { |
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158 int numbered_output = 1; |
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159 |
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160 int i; |
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161 for (i = 1; i < argc; i++) |
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1
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162 { |
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3523
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163 std::string option = argv[i]; |
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2435
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164 |
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165 if (option == "-r" || option == "-w" || option == "-a" |
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166 || option == "-n") |
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1
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167 { |
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168 if (i < argc - 1) |
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5872
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169 command_history::set_file (argv[i+1]); |
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170 |
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171 if (option == "-a") |
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172 // Append `new' lines to file. |
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2926
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173 command_history::append (); |
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174 |
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175 else if (option == "-w") |
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176 // Write entire history. |
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177 command_history::write (); |
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777
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178 |
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2435
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179 else if (option == "-r") |
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180 // Read entire file. |
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181 command_history::read (); |
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182 |
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2435
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183 else if (option == "-n") |
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184 // Read `new' history from file. |
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2926
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185 command_history::read_range (); |
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186 |
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187 else |
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188 panic_impossible (); |
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189 |
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1
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190 return; |
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191 } |
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1755
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192 else if (argv[i] == "-q") |
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193 numbered_output = 0; |
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194 else if (argv[i] == "--") |
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1
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195 { |
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1755
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196 i++; |
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197 break; |
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198 } |
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199 else |
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200 break; |
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201 } |
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202 |
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1799
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203 int limit = -1; |
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204 |
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1755
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205 if (i < argc) |
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1
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206 { |
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1755
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207 if (sscanf (argv[i].c_str (), "%d", &limit) != 1) |
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1
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208 { |
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1755
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209 if (argv[i][0] == '-') |
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210 error ("history: unrecognized option `%s'", argv[i].c_str ()); |
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211 else |
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212 error ("history: bad non-numeric arg `%s'", argv[i].c_str ()); |
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213 |
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214 return; |
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215 } |
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216 |
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217 if (limit < 0) |
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218 limit = -limit; |
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219 } |
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220 |
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221 string_vector hlist = command_history::list (limit, numbered_output); |
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222 |
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223 int len = hlist.length (); |
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224 |
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2095
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225 for (i = 0; i < len; i++) |
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226 octave_stdout << hlist[i] << "\n"; |
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227 } |
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228 |
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581
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229 // Read the edited history lines from STREAM and return them |
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230 // one at a time. This can read unlimited length lines. The |
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231 // caller should free the storage. |
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232 |
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233 static char * |
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234 edit_history_readline (std::fstream& stream) |
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235 { |
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236 char c; |
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237 int line_len = 128; |
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238 int lindex = 0; |
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239 char *line = new char [line_len]; |
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240 line[0] = '\0'; |
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241 |
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242 while (stream.get (c)) |
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243 { |
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244 if (lindex + 2 >= line_len) |
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245 { |
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246 char *tmp_line = new char [line_len += 128]; |
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247 strcpy (tmp_line, line); |
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248 delete [] line; |
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249 line = tmp_line; |
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250 } |
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251 |
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252 if (c == '\n') |
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253 { |
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254 line[lindex++] = '\n'; |
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255 line[lindex++] = '\0'; |
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256 return line; |
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257 } |
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258 else |
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259 line[lindex++] = c; |
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260 } |
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261 |
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262 if (! lindex) |
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263 { |
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264 delete [] line; |
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529
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265 return 0; |
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1
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266 } |
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267 |
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268 if (lindex + 2 >= line_len) |
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269 { |
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270 char *tmp_line = new char [lindex+3]; |
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271 strcpy (tmp_line, line); |
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272 delete [] line; |
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273 line = tmp_line; |
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274 } |
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275 |
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1358
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276 // Finish with newline if none in file. |
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1
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277 |
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278 line[lindex++] = '\n'; |
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279 line[lindex++] = '\0'; |
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280 return line; |
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281 } |
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282 |
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581
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283 // Use `command' to replace the last entry in the history list, which, |
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284 // by this time, is `run_history blah...'. The intent is that the |
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285 // new command becomes the history entry, and that `fc' should never |
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581
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286 // appear in the history list. This way you can do `run_history' to |
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287 // your heart's content. |
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288 |
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64
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289 static void |
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3523
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290 edit_history_repl_hist (const std::string& command) |
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64
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291 { |
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1799
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292 if (! command.empty ()) |
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293 { |
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2926
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294 string_vector hlist = command_history::list (); |
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64
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295 |
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1799
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296 int len = hlist.length (); |
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64
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297 |
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1799
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298 if (len > 0) |
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299 { |
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300 int i = len - 1; |
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64
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301 |
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3523
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302 std::string histent = command_history::get_entry (i); |
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64
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303 |
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1799
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304 if (! histent.empty ()) |
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305 { |
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3523
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306 std::string cmd = command; |
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64
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307 |
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1799
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308 int cmd_len = cmd.length (); |
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64
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309 |
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1799
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310 if (cmd[cmd_len - 1] == '\n') |
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311 cmd.resize (cmd_len - 1); |
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64
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312 |
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1799
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313 if (! cmd.empty ()) |
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2926
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314 command_history::replace_entry (i, cmd); |
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1799
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315 } |
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64
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316 } |
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317 } |
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318 } |
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319 |
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1
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320 static void |
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3523
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321 edit_history_add_hist (const std::string& line) |
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1
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322 { |
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1799
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323 if (! line.empty ()) |
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1
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324 { |
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3523
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325 std::string tmp = line; |
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1
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326 |
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1799
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327 int len = tmp.length (); |
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328 |
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329 if (len > 0 && tmp[len-1] == '\n') |
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330 tmp.resize (len - 1); |
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331 |
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332 if (! tmp.empty ()) |
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2926
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333 command_history::add (tmp); |
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1
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334 } |
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335 } |
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336 |
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3536
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337 static std::string |
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1755
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338 mk_tmp_hist_file (int argc, const string_vector& argv, |
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2804
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339 int insert_curr, const char *warn_for) |
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1
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340 { |
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3523
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341 std::string retval; |
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1
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342 |
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2926
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343 string_vector hlist = command_history::list (); |
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1
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344 |
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1799
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345 int hist_count = hlist.length (); |
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1
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346 |
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1358
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347 // The current command line is already part of the history list by |
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348 // the time we get to this point. Delete it from the list. |
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1
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349 |
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350 hist_count -= 2; |
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1799
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351 |
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64
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352 if (! insert_curr) |
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2926
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353 command_history::remove (hist_count); |
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1799
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354 |
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1
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355 hist_count--; |
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356 |
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1358
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357 // If no numbers have been specified, the default is to edit the |
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358 // last command in the history list. |
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1
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359 |
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360 int hist_end = hist_count; |
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361 int hist_beg = hist_count; |
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362 int reverse = 0; |
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363 |
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1358
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364 // Process options. |
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1
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365 |
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366 int usage_error = 0; |
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367 if (argc == 3) |
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368 { |
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1755
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369 if (sscanf (argv[1].c_str (), "%d", &hist_beg) != 1 |
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370 || sscanf (argv[2].c_str (), "%d", &hist_end) != 1) |
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1
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371 usage_error = 1; |
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372 else |
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373 { |
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374 hist_beg--; |
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375 hist_end--; |
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376 } |
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377 } |
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378 else if (argc == 2) |
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379 { |
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1755
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380 if (sscanf (argv[1].c_str (), "%d", &hist_beg) != 1) |
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1
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381 usage_error = 1; |
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382 else |
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383 { |
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384 hist_beg--; |
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385 hist_end = hist_beg; |
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386 } |
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387 } |
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388 |
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389 if (hist_beg < 0 || hist_end < 0 || hist_beg > hist_count |
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390 || hist_end > hist_count) |
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391 { |
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64
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392 error ("%s: history specification out of range", warn_for); |
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1799
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393 return retval; |
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1
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394 } |
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395 |
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396 if (usage_error) |
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397 { |
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64
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398 usage ("%s [first] [last]", warn_for); |
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1799
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399 return retval; |
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1
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400 } |
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401 |
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402 if (hist_end < hist_beg) |
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403 { |
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404 int t = hist_end; |
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405 hist_end = hist_beg; |
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406 hist_beg = t; |
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407 reverse = 1; |
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408 } |
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409 |
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3523
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410 std::string name = file_ops::tempnam ("", "oct-"); |
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1
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411 |
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3551
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412 std::fstream file (name.c_str (), std::ios::out); |
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64
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413 |
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1
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414 if (! file) |
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415 { |
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1755
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416 error ("%s: couldn't open temporary file `%s'", warn_for, |
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417 name.c_str ()); |
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1799
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418 return retval; |
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1
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419 } |
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420 |
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421 if (reverse) |
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422 { |
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423 for (int i = hist_end; i >= hist_beg; i--) |
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1799
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424 file << hlist[i] << "\n"; |
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1
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425 } |
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426 else |
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427 { |
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428 for (int i = hist_beg; i <= hist_end; i++) |
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1799
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429 file << hlist[i] << "\n"; |
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1
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430 } |
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431 |
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432 file.close (); |
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433 |
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1755
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434 return name; |
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64
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435 } |
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436 |
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1755
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437 static void |
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438 do_edit_history (int argc, const string_vector& argv) |
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64
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439 { |
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3523
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440 std::string name = mk_tmp_hist_file (argc, argv, 0, "edit_history"); |
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64
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441 |
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1755
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442 if (name.empty ()) |
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64
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443 return; |
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444 |
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1358
|
445 // Call up our favorite editor on the file of commands. |
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1
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446 |
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5794
|
447 std::string cmd = VEDITOR; |
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4469
|
448 cmd.append (" \""); |
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1799
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449 cmd.append (name); |
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4469
|
450 cmd.append ("\""); |
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1
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451 |
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1358
|
452 // Ignore interrupts while we are off editing commands. Should we |
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|
453 // maybe avoid using system()? |
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1
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454 |
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2705
|
455 volatile octave_interrupt_handler old_interrupt_handler |
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2554
|
456 = octave_ignore_interrupts (); |
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1443
|
457 |
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1799
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458 system (cmd.c_str ()); |
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1443
|
459 |
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2554
|
460 octave_set_interrupt_handler (old_interrupt_handler); |
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1
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461 |
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1358
|
462 // Write the commands to the history file since parse_and_execute |
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|
463 // disables command line history while it executes. |
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1
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464 |
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3551
|
465 std::fstream file (name.c_str (), std::ios::in); |
|
1
|
466 |
|
|
467 char *line; |
|
64
|
468 int first = 1; |
|
529
|
469 while ((line = edit_history_readline (file)) != 0) |
|
1
|
470 { |
|
1358
|
471 // Skip blank lines. |
|
1
|
472 |
|
|
473 if (line[0] == '\n') |
|
|
474 { |
|
|
475 delete [] line; |
|
|
476 continue; |
|
|
477 } |
|
|
478 |
|
64
|
479 if (first) |
|
|
480 { |
|
|
481 first = 0; |
|
|
482 edit_history_repl_hist (line); |
|
|
483 } |
|
|
484 else |
|
|
485 edit_history_add_hist (line); |
|
1
|
486 } |
|
|
487 |
|
|
488 file.close (); |
|
|
489 |
|
1358
|
490 // Turn on command echo, so the output from this will make better |
|
|
491 // sense. |
|
1
|
492 |
|
2985
|
493 unwind_protect::begin_frame ("do_edit_history"); |
|
3018
|
494 |
|
2205
|
495 unwind_protect_int (Vecho_executing_commands); |
|
3018
|
496 unwind_protect_bool (input_from_tmp_history_file); |
|
|
497 |
|
2205
|
498 Vecho_executing_commands = ECHO_CMD_LINE; |
|
3018
|
499 input_from_tmp_history_file = true; |
|
1
|
500 |
|
2897
|
501 parse_and_execute (name); |
|
1
|
502 |
|
2985
|
503 unwind_protect::run_frame ("do_edit_history"); |
|
1
|
504 |
|
1358
|
505 // Delete the temporary file. Should probably be done with an |
|
|
506 // unwind_protect. |
|
1
|
507 |
|
1755
|
508 unlink (name.c_str ()); |
|
1
|
509 } |
|
|
510 |
|
1755
|
511 static void |
|
|
512 do_run_history (int argc, const string_vector& argv) |
|
64
|
513 { |
|
3523
|
514 std::string name = mk_tmp_hist_file (argc, argv, 1, "run_history"); |
|
64
|
515 |
|
1755
|
516 if (name.empty ()) |
|
64
|
517 return; |
|
|
518 |
|
1799
|
519 // Turn on command echo so the output from this will make better |
|
1358
|
520 // sense. |
|
64
|
521 |
|
2985
|
522 unwind_protect::begin_frame ("do_run_history"); |
|
3018
|
523 |
|
2205
|
524 unwind_protect_int (Vecho_executing_commands); |
|
3018
|
525 unwind_protect_bool (input_from_tmp_history_file); |
|
|
526 |
|
2205
|
527 Vecho_executing_commands = ECHO_CMD_LINE; |
|
3018
|
528 input_from_tmp_history_file = true; |
|
64
|
529 |
|
2897
|
530 parse_and_execute (name); |
|
64
|
531 |
|
2985
|
532 unwind_protect::run_frame ("do_run_history"); |
|
64
|
533 |
|
1799
|
534 // Delete the temporary file. |
|
|
535 |
|
5775
|
536 // FIXME -- should probably be done using an unwind_protect. |
|
64
|
537 |
|
1755
|
538 unlink (name.c_str ()); |
|
64
|
539 } |
|
|
540 |
|
5305
|
541 void |
|
5794
|
542 initialize_history (void) |
|
|
543 { |
|
5872
|
544 command_history::set_file (Vhistory_file); |
|
5800
|
545 command_history::set_size (Vhistory_size); |
|
|
546 |
|
5794
|
547 command_history::read (false); |
|
|
548 } |
|
|
549 |
|
|
550 void |
|
5305
|
551 octave_history_write_timestamp (void) |
|
|
552 { |
|
|
553 octave_localtime now; |
|
|
554 |
|
|
555 std::string timestamp = now.strftime (Vhistory_timestamp_format_string); |
|
|
556 |
|
|
557 if (! timestamp.empty ()) |
|
|
558 command_history::add (timestamp); |
|
|
559 } |
|
|
560 |
|
4208
|
561 DEFCMD (edit_history, args, , |
|
3332
|
562 "-*- texinfo -*-\n\ |
|
|
563 @deffn {Command} edit_history options\n\ |
|
|
564 If invoked with no arguments, @code{edit_history} allows you to edit the\n\ |
|
|
565 history list using the editor named by the variable @code{EDITOR}. The\n\ |
|
|
566 commands to be edited are first copied to a temporary file. When you\n\ |
|
|
567 exit the editor, Octave executes the commands that remain in the file.\n\ |
|
|
568 It is often more convenient to use @code{edit_history} to define functions \n\ |
|
|
569 rather than attempting to enter them directly on the command line.\n\ |
|
|
570 By default, the block of commands is executed as soon as you exit the\n\ |
|
|
571 editor. To avoid executing any commands, simply delete all the lines\n\ |
|
|
572 from the buffer before exiting the editor.\n\ |
|
|
573 \n\ |
|
|
574 The @code{edit_history} command takes two optional arguments specifying\n\ |
|
|
575 the history numbers of first and last commands to edit. For example,\n\ |
|
|
576 the command\n\ |
|
529
|
577 \n\ |
|
3332
|
578 @example\n\ |
|
|
579 edit_history 13\n\ |
|
|
580 @end example\n\ |
|
|
581 \n\ |
|
|
582 @noindent\n\ |
|
|
583 extracts all the commands from the 13th through the last in the history\n\ |
|
|
584 list. The command\n\ |
|
|
585 \n\ |
|
|
586 @example\n\ |
|
|
587 edit_history 13 169\n\ |
|
|
588 @end example\n\ |
|
|
589 \n\ |
|
|
590 @noindent\n\ |
|
|
591 only extracts commands 13 through 169. Specifying a larger number for\n\ |
|
|
592 the first command than the last command reverses the list of commands\n\ |
|
|
593 before placing them in the buffer to be edited. If both arguments are\n\ |
|
|
594 omitted, the previous command in the history list is used.\n\ |
|
3333
|
595 @end deffn") |
|
529
|
596 { |
|
2086
|
597 octave_value_list retval; |
|
529
|
598 |
|
1755
|
599 int argc = args.length () + 1; |
|
|
600 |
|
1968
|
601 string_vector argv = args.make_argv ("edit_history"); |
|
1755
|
602 |
|
|
603 if (error_state) |
|
|
604 return retval; |
|
529
|
605 |
|
|
606 do_edit_history (argc, argv); |
|
|
607 |
|
|
608 return retval; |
|
|
609 } |
|
|
610 |
|
4208
|
611 DEFCMD (history, args, , |
|
3332
|
612 "-*- texinfo -*-\n\ |
|
|
613 @deffn {Command} history options\n\ |
|
|
614 If invoked with no arguments, @code{history} displays a list of commands\n\ |
|
|
615 that you have executed. Valid options are:\n\ |
|
|
616 \n\ |
|
|
617 @table @code\n\ |
|
|
618 @item -w @var{file}\n\ |
|
|
619 Write the current history to the file @var{file}. If the name is\n\ |
|
|
620 omitted, use the default history file (normally @file{~/.octave_hist}).\n\ |
|
529
|
621 \n\ |
|
3332
|
622 @item -r @var{file}\n\ |
|
|
623 Read the file @var{file}, replacing the current history list with its\n\ |
|
|
624 contents. If the name is omitted, use the default history file\n\ |
|
|
625 (normally @file{~/.octave_hist}).\n\ |
|
|
626 \n\ |
|
3499
|
627 @item @var{n}\n\ |
|
|
628 Only display the most recent @var{n} lines of history.\n\ |
|
3332
|
629 \n\ |
|
|
630 @item -q\n\ |
|
|
631 Don't number the displayed lines of history. This is useful for cutting\n\ |
|
|
632 and pasting commands if you are using the X Window System.\n\ |
|
|
633 @end table\n\ |
|
|
634 \n\ |
|
|
635 For example, to display the five most recent commands that you have\n\ |
|
|
636 typed without displaying line numbers, use the command\n\ |
|
|
637 @kbd{history -q 5}.\n\ |
|
3333
|
638 @end deffn") |
|
529
|
639 { |
|
2086
|
640 octave_value_list retval; |
|
529
|
641 |
|
1755
|
642 int argc = args.length () + 1; |
|
|
643 |
|
1968
|
644 string_vector argv = args.make_argv ("history"); |
|
1755
|
645 |
|
|
646 if (error_state) |
|
|
647 return retval; |
|
529
|
648 |
|
|
649 do_history (argc, argv); |
|
|
650 |
|
|
651 return retval; |
|
|
652 } |
|
|
653 |
|
4208
|
654 DEFCMD (run_history, args, , |
|
3332
|
655 "-*- texinfo -*-\n\ |
|
|
656 @deffn {Command} run_history [first] [last]\n\ |
|
|
657 Similar to @code{edit_history}, except that the editor is not invoked,\n\ |
|
|
658 and the commands are simply executed as they appear in the history list.\n\ |
|
3333
|
659 @end deffn") |
|
529
|
660 { |
|
2086
|
661 octave_value_list retval; |
|
529
|
662 |
|
1755
|
663 int argc = args.length () + 1; |
|
|
664 |
|
1968
|
665 string_vector argv = args.make_argv ("run_history"); |
|
1755
|
666 |
|
|
667 if (error_state) |
|
|
668 return retval; |
|
529
|
669 |
|
|
670 do_run_history (argc, argv); |
|
|
671 |
|
|
672 return retval; |
|
|
673 } |
|
|
674 |
|
5794
|
675 DEFUN (history_size, args, nargout, |
|
|
676 "-*- texinfo -*-\n\ |
|
|
677 @deftypefn {Built-in Function} {@var{val} =} history_size ()\n\ |
|
|
678 @deftypefnx {Built-in Function} {@var{old_val} =} history_size (@var{new_val})\n\ |
|
|
679 Query or set the internal variable that specifies how many entries\n\ |
|
|
680 to store in the history file. The default value is @code{1024},\n\ |
|
|
681 but may be overridden by the environment variable @code{OCTAVE_HISTSIZE}.\n\ |
|
|
682 @seealso{history_file, history_timestamp_format, saving_history}\n\ |
|
|
683 @end deftypefn") |
|
3016
|
684 { |
|
5800
|
685 int saved_history_size = Vhistory_size; |
|
|
686 |
|
|
687 octave_value retval |
|
|
688 = SET_INTERNAL_VARIABLE_WITH_LIMITS (history_size, -1, INT_MAX); |
|
|
689 |
|
|
690 if (Vhistory_size != saved_history_size) |
|
|
691 command_history::set_size (Vhistory_size); |
|
|
692 |
|
|
693 return retval; |
|
3016
|
694 } |
|
|
695 |
|
5794
|
696 DEFUN (history_file, args, nargout, |
|
|
697 "-*- texinfo -*-\n\ |
|
|
698 @deftypefn {Built-in Function} {@var{val} =} history_file ()\n\ |
|
|
699 @deftypefnx {Built-in Function} {@var{old_val} =} history_file (@var{new_val})\n\ |
|
|
700 Query or set the internal variable that specifies the name of the\n\ |
|
|
701 file used to store command history. The default value is\n\ |
|
|
702 @code{\"~/.octave_hist\"}, but may be overridden by the environment\n\ |
|
|
703 variable @code{OCTAVE_HISTFILE}.\n\ |
|
|
704 @seealso{history_size, saving_history, history_timestamp_format_string}\n\ |
|
|
705 @end deftypefn") |
|
5305
|
706 { |
|
5794
|
707 std::string saved_history_file = Vhistory_file; |
|
5305
|
708 |
|
5794
|
709 octave_value retval = SET_INTERNAL_VARIABLE (history_file); |
|
5305
|
710 |
|
5794
|
711 if (Vhistory_file != saved_history_file) |
|
5872
|
712 command_history::set_file (Vhistory_file); |
|
5305
|
713 |
|
5800
|
714 return retval; |
|
3016
|
715 } |
|
|
716 |
|
5794
|
717 DEFUN (history_timestamp_format_string, args, nargout, |
|
|
718 "-*- texinfo -*-\n\ |
|
|
719 @deftypefn {Built-in Function} {@var{val} =} history_timestamp_format_string ()\n\ |
|
|
720 @deftypefnx {Built-in Function} {@var{old_val} =} history_timestamp_format_string (@var{new_val})\n\ |
|
6653
|
721 Query or set the internal variable that specifies the format string\n\ |
|
5794
|
722 for the comment line that is written to the history file when Octave\n\ |
|
|
723 exits. The format string is passed to @code{strftime}. The default\n\ |
|
|
724 value is\n\ |
|
5305
|
725 \n\ |
|
|
726 @example\n\ |
|
|
727 \"# Octave VERSION, %a %b %d %H:%M:%S %Y %Z <USER@@HOST>\"\n\ |
|
|
728 @end example\n\ |
|
5794
|
729 @seealso{strftime, history_file, history_size, saving_history}\n\ |
|
|
730 @end deftypefn") |
|
|
731 { |
|
|
732 return SET_INTERNAL_VARIABLE (history_timestamp_format_string); |
|
|
733 } |
|
5305
|
734 |
|
5794
|
735 DEFUN (saving_history, args, nargout, |
|
|
736 "-*- texinfo -*-\n\ |
|
|
737 @deftypefn {Built-in Function} {@var{val} =} saving_history ()\n\ |
|
|
738 @deftypefnx {Built-in Function} {@var{old_val} =} saving_history (@var{new_val})\n\ |
|
|
739 Query or set the internal variable that controls whether commands entered\n\ |
|
|
740 on the command line are saved in the history file.\n\ |
|
6615
|
741 @seealso{history_file, history_size, history_timestamp_format}\n\ |
|
5794
|
742 @end deftypefn") |
|
|
743 { |
|
|
744 octave_value retval = SET_INTERNAL_VARIABLE (saving_history); |
|
|
745 |
|
|
746 command_history::ignore_entries (! Vsaving_history); |
|
|
747 |
|
|
748 return retval; |
|
3016
|
749 } |
|
|
750 |
|
1
|
751 /* |
|
|
752 ;;; Local Variables: *** |
|
|
753 ;;; mode: C++ *** |
|
|
754 ;;; End: *** |
|
|
755 */ |
