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1 /* |
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2 |
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3 Copyright (C) 1993, 1994, 1995, 1996, 1997, 1999, 2000, 2002, 2003, |
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4 2005, 2006, 2007 John W. Eaton |
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5 |
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6 This file is part of Octave. |
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7 |
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8 Octave is free software; you can redistribute it and/or modify it |
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9 under the terms of the GNU General Public License as published by the |
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10 Free Software Foundation; either version 3 of the License, or (at your |
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11 option) any later version. |
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12 |
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13 Octave is distributed in the hope that it will be useful, but WITHOUT |
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14 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
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15 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
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16 for more details. |
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17 |
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18 You should have received a copy of the GNU General Public License |
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19 along with Octave; see the file COPYING. If not, see |
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20 <http://www.gnu.org/licenses/>. |
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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 |
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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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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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48 #include <sys/types.h> |
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49 #endif |
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50 #include <unistd.h> |
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51 #endif |
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52 |
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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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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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79 static std::string |
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80 default_history_file (void) |
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81 { |
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82 std::string file; |
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83 |
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84 std::string env_file = octave_env::getenv ("OCTAVE_HISTFILE"); |
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85 |
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2926
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86 if (! env_file.empty ()) |
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87 file = env_file; |
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88 |
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89 if (file.empty ()) |
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90 { |
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91 std::string home_dir = octave_env::get_home_directory (); |
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92 |
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93 if (! home_dir.empty ()) |
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94 { |
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95 file = home_dir; |
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96 if (! file_ops::is_dir_sep (file[file.length()-1])) |
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97 file.push_back (file_ops::dir_sep_char); |
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98 file.append (".octave_hist"); |
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99 } |
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100 else |
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101 file = ".octave_hist"; |
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102 } |
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103 |
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104 return file; |
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105 } |
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106 |
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107 // Where history is saved. |
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108 static std::string Vhistory_file = default_history_file (); |
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109 |
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110 static int |
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111 default_history_size (void) |
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112 { |
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113 int size = 1024; |
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114 |
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115 std::string env_size = octave_env::getenv ("OCTAVE_HISTSIZE"); |
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116 |
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117 if (! env_size.empty ()) |
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118 { |
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119 int val; |
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120 |
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121 if (sscanf (env_size.c_str (), "%d", &val) == 1) |
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122 size = val > 0 ? val : 0; |
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123 } |
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124 |
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125 return size; |
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126 } |
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127 |
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128 // The number of lines to keep in the history file. |
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129 static int Vhistory_size = default_history_size (); |
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130 |
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131 static std::string |
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132 default_history_timestamp_format (void) |
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133 { |
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134 return |
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135 std::string ("# Octave " OCTAVE_VERSION ", %a %b %d %H:%M:%S %Y %Z <") |
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136 + octave_env::get_user_name () |
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137 + std::string ("@") |
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138 + octave_env::get_host_name () |
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139 + std::string (">"); |
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140 } |
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141 |
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142 // The format of the timestamp marker written to the history file when |
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143 // Octave exits. |
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144 static std::string Vhistory_timestamp_format_string |
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145 = default_history_timestamp_format (); |
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146 |
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147 // TRUE if we are saving history. |
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148 bool Vsaving_history = true; |
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149 |
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150 // Display, save, or load history. Stolen and modified from bash. |
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151 // |
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152 // Arg of -w FILENAME means write file, arg of -r FILENAME |
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153 // means read file, arg of -q means don't number lines. Arg of N |
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154 // means only display that many items. |
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155 |
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156 static void |
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157 do_history (int argc, const string_vector& argv) |
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158 { |
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159 int numbered_output = 1; |
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160 |
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161 int i; |
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162 for (i = 1; i < argc; i++) |
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1
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163 { |
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164 std::string option = argv[i]; |
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165 |
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166 if (option == "-r" || option == "-w" || option == "-a" |
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167 || option == "-n") |
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1
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168 { |
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169 if (i < argc - 1) |
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5872
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170 command_history::set_file (argv[i+1]); |
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1
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171 |
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2435
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172 if (option == "-a") |
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173 // Append `new' lines to file. |
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2926
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174 command_history::append (); |
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2435
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175 |
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176 else if (option == "-w") |
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177 // Write entire history. |
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178 command_history::write (); |
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777
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179 |
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2435
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180 else if (option == "-r") |
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181 // Read entire file. |
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182 command_history::read (); |
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183 |
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2435
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184 else if (option == "-n") |
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185 // Read `new' history from file. |
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2926
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186 command_history::read_range (); |
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777
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187 |
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2435
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188 else |
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189 panic_impossible (); |
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190 |
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1
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191 return; |
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192 } |
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1755
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193 else if (argv[i] == "-q") |
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1
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194 numbered_output = 0; |
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195 else if (argv[i] == "--") |
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1
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196 { |
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1755
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197 i++; |
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1
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198 break; |
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199 } |
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200 else |
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201 break; |
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202 } |
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203 |
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204 int limit = -1; |
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1
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205 |
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1755
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206 if (i < argc) |
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1
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207 { |
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208 if (sscanf (argv[i].c_str (), "%d", &limit) != 1) |
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1
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209 { |
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210 if (argv[i][0] == '-') |
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211 error ("history: unrecognized option `%s'", argv[i].c_str ()); |
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212 else |
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213 error ("history: bad non-numeric arg `%s'", argv[i].c_str ()); |
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214 |
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215 return; |
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216 } |
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217 |
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218 if (limit < 0) |
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219 limit = -limit; |
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220 } |
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221 |
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222 string_vector hlist = command_history::list (limit, numbered_output); |
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223 |
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224 int len = hlist.length (); |
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225 |
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2095
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226 for (i = 0; i < len; i++) |
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227 octave_stdout << hlist[i] << "\n"; |
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228 } |
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229 |
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581
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230 // Read the edited history lines from STREAM and return them |
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231 // one at a time. This can read unlimited length lines. The |
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232 // caller should free the storage. |
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233 |
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234 static char * |
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235 edit_history_readline (std::fstream& stream) |
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1
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236 { |
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237 char c; |
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238 int line_len = 128; |
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239 int lindex = 0; |
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240 char *line = new char [line_len]; |
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241 line[0] = '\0'; |
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242 |
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243 while (stream.get (c)) |
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244 { |
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245 if (lindex + 2 >= line_len) |
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246 { |
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247 char *tmp_line = new char [line_len += 128]; |
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248 strcpy (tmp_line, line); |
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249 delete [] line; |
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250 line = tmp_line; |
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251 } |
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252 |
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253 if (c == '\n') |
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254 { |
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255 line[lindex++] = '\n'; |
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256 line[lindex++] = '\0'; |
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257 return line; |
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258 } |
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259 else |
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260 line[lindex++] = c; |
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261 } |
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262 |
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263 if (! lindex) |
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264 { |
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265 delete [] line; |
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529
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266 return 0; |
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1
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267 } |
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268 |
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269 if (lindex + 2 >= line_len) |
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270 { |
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271 char *tmp_line = new char [lindex+3]; |
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272 strcpy (tmp_line, line); |
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273 delete [] line; |
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274 line = tmp_line; |
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275 } |
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276 |
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1358
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277 // Finish with newline if none in file. |
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1
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278 |
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279 line[lindex++] = '\n'; |
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280 line[lindex++] = '\0'; |
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281 return line; |
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282 } |
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283 |
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581
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284 // Use `command' to replace the last entry in the history list, which, |
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285 // by this time, is `run_history blah...'. The intent is that the |
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286 // new command becomes the history entry, and that `fc' should never |
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581
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287 // appear in the history list. This way you can do `run_history' to |
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288 // your heart's content. |
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289 |
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64
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290 static void |
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3523
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291 edit_history_repl_hist (const std::string& command) |
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64
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292 { |
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1799
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293 if (! command.empty ()) |
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294 { |
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2926
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295 string_vector hlist = command_history::list (); |
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64
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296 |
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1799
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297 int len = hlist.length (); |
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64
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298 |
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1799
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299 if (len > 0) |
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300 { |
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301 int i = len - 1; |
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64
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302 |
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3523
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303 std::string histent = command_history::get_entry (i); |
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64
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304 |
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1799
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305 if (! histent.empty ()) |
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306 { |
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3523
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307 std::string cmd = command; |
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64
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308 |
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1799
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309 int cmd_len = cmd.length (); |
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64
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310 |
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1799
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311 if (cmd[cmd_len - 1] == '\n') |
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312 cmd.resize (cmd_len - 1); |
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64
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313 |
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1799
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314 if (! cmd.empty ()) |
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2926
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315 command_history::replace_entry (i, cmd); |
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1799
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316 } |
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64
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317 } |
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318 } |
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319 } |
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320 |
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1
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321 static void |
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3523
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322 edit_history_add_hist (const std::string& line) |
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1
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323 { |
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1799
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324 if (! line.empty ()) |
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1
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325 { |
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3523
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326 std::string tmp = line; |
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1
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327 |
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1799
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328 int len = tmp.length (); |
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329 |
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330 if (len > 0 && tmp[len-1] == '\n') |
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331 tmp.resize (len - 1); |
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332 |
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333 if (! tmp.empty ()) |
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2926
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334 command_history::add (tmp); |
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1
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335 } |
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336 } |
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337 |
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3536
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338 static std::string |
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1755
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339 mk_tmp_hist_file (int argc, const string_vector& argv, |
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2804
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340 int insert_curr, const char *warn_for) |
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1
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341 { |
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3523
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342 std::string retval; |
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1
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343 |
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2926
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344 string_vector hlist = command_history::list (); |
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1
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345 |
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1799
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346 int hist_count = hlist.length (); |
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1
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347 |
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1358
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348 // The current command line is already part of the history list by |
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349 // the time we get to this point. Delete it from the list. |
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1
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350 |
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351 hist_count -= 2; |
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1799
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352 |
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64
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353 if (! insert_curr) |
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2926
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354 command_history::remove (hist_count); |
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1799
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355 |
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1
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356 hist_count--; |
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357 |
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1358
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358 // If no numbers have been specified, the default is to edit the |
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359 // last command in the history list. |
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1
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360 |
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361 int hist_end = hist_count; |
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362 int hist_beg = hist_count; |
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363 int reverse = 0; |
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364 |
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1358
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365 // Process options. |
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1
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366 |
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367 int usage_error = 0; |
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368 if (argc == 3) |
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369 { |
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1755
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370 if (sscanf (argv[1].c_str (), "%d", &hist_beg) != 1 |
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371 || sscanf (argv[2].c_str (), "%d", &hist_end) != 1) |
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1
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372 usage_error = 1; |
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373 else |
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374 { |
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375 hist_beg--; |
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376 hist_end--; |
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377 } |
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378 } |
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379 else if (argc == 2) |
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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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1
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382 usage_error = 1; |
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383 else |
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384 { |
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385 hist_beg--; |
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386 hist_end = hist_beg; |
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387 } |
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388 } |
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389 |
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390 if (hist_beg < 0 || hist_end < 0 || hist_beg > hist_count |
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391 || hist_end > hist_count) |
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392 { |
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64
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393 error ("%s: history specification out of range", warn_for); |
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1799
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394 return retval; |
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1
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395 } |
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396 |
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397 if (usage_error) |
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398 { |
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64
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399 usage ("%s [first] [last]", warn_for); |
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1799
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400 return retval; |
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1
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401 } |
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402 |
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403 if (hist_end < hist_beg) |
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404 { |
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405 int t = hist_end; |
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406 hist_end = hist_beg; |
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407 hist_beg = t; |
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408 reverse = 1; |
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409 } |
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410 |
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3523
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411 std::string name = file_ops::tempnam ("", "oct-"); |
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1
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412 |
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3551
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413 std::fstream file (name.c_str (), std::ios::out); |
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64
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414 |
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1
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415 if (! file) |
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416 { |
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1755
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417 error ("%s: couldn't open temporary file `%s'", warn_for, |
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418 name.c_str ()); |
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1799
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419 return retval; |
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1
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420 } |
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421 |
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422 if (reverse) |
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423 { |
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424 for (int i = hist_end; i >= hist_beg; i--) |
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1799
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425 file << hlist[i] << "\n"; |
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1
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426 } |
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427 else |
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428 { |
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429 for (int i = hist_beg; i <= hist_end; i++) |
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1799
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430 file << hlist[i] << "\n"; |
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1
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431 } |
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432 |
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433 file.close (); |
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434 |
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1755
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435 return name; |
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64
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436 } |
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437 |
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1755
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438 static void |
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439 do_edit_history (int argc, const string_vector& argv) |
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64
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440 { |
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3523
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441 std::string name = mk_tmp_hist_file (argc, argv, 0, "edit_history"); |
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64
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442 |
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1755
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443 if (name.empty ()) |
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64
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444 return; |
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445 |
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1358
|
446 // Call up our favorite editor on the file of commands. |
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1
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447 |
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5794
|
448 std::string cmd = VEDITOR; |
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4469
|
449 cmd.append (" \""); |
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1799
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450 cmd.append (name); |
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4469
|
451 cmd.append ("\""); |
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1
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452 |
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1358
|
453 // Ignore interrupts while we are off editing commands. Should we |
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|
454 // maybe avoid using system()? |
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1
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455 |
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2705
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456 volatile octave_interrupt_handler old_interrupt_handler |
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2554
|
457 = octave_ignore_interrupts (); |
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1443
|
458 |
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1799
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459 system (cmd.c_str ()); |
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1443
|
460 |
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2554
|
461 octave_set_interrupt_handler (old_interrupt_handler); |
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1
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462 |
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1358
|
463 // Write the commands to the history file since parse_and_execute |
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|
464 // disables command line history while it executes. |
|
1
|
465 |
|
3551
|
466 std::fstream file (name.c_str (), std::ios::in); |
|
1
|
467 |
|
|
468 char *line; |
|
64
|
469 int first = 1; |
|
529
|
470 while ((line = edit_history_readline (file)) != 0) |
|
1
|
471 { |
|
1358
|
472 // Skip blank lines. |
|
1
|
473 |
|
|
474 if (line[0] == '\n') |
|
|
475 { |
|
|
476 delete [] line; |
|
|
477 continue; |
|
|
478 } |
|
|
479 |
|
64
|
480 if (first) |
|
|
481 { |
|
|
482 first = 0; |
|
|
483 edit_history_repl_hist (line); |
|
|
484 } |
|
|
485 else |
|
|
486 edit_history_add_hist (line); |
|
1
|
487 } |
|
|
488 |
|
|
489 file.close (); |
|
|
490 |
|
1358
|
491 // Turn on command echo, so the output from this will make better |
|
|
492 // sense. |
|
1
|
493 |
|
2985
|
494 unwind_protect::begin_frame ("do_edit_history"); |
|
3018
|
495 |
|
2205
|
496 unwind_protect_int (Vecho_executing_commands); |
|
3018
|
497 unwind_protect_bool (input_from_tmp_history_file); |
|
|
498 |
|
2205
|
499 Vecho_executing_commands = ECHO_CMD_LINE; |
|
3018
|
500 input_from_tmp_history_file = true; |
|
1
|
501 |
|
2897
|
502 parse_and_execute (name); |
|
1
|
503 |
|
2985
|
504 unwind_protect::run_frame ("do_edit_history"); |
|
1
|
505 |
|
1358
|
506 // Delete the temporary file. Should probably be done with an |
|
|
507 // unwind_protect. |
|
1
|
508 |
|
1755
|
509 unlink (name.c_str ()); |
|
1
|
510 } |
|
|
511 |
|
1755
|
512 static void |
|
|
513 do_run_history (int argc, const string_vector& argv) |
|
64
|
514 { |
|
3523
|
515 std::string name = mk_tmp_hist_file (argc, argv, 1, "run_history"); |
|
64
|
516 |
|
1755
|
517 if (name.empty ()) |
|
64
|
518 return; |
|
|
519 |
|
1799
|
520 // Turn on command echo so the output from this will make better |
|
1358
|
521 // sense. |
|
64
|
522 |
|
2985
|
523 unwind_protect::begin_frame ("do_run_history"); |
|
3018
|
524 |
|
2205
|
525 unwind_protect_int (Vecho_executing_commands); |
|
3018
|
526 unwind_protect_bool (input_from_tmp_history_file); |
|
|
527 |
|
2205
|
528 Vecho_executing_commands = ECHO_CMD_LINE; |
|
3018
|
529 input_from_tmp_history_file = true; |
|
64
|
530 |
|
2897
|
531 parse_and_execute (name); |
|
64
|
532 |
|
2985
|
533 unwind_protect::run_frame ("do_run_history"); |
|
64
|
534 |
|
1799
|
535 // Delete the temporary file. |
|
|
536 |
|
5775
|
537 // FIXME -- should probably be done using an unwind_protect. |
|
64
|
538 |
|
1755
|
539 unlink (name.c_str ()); |
|
64
|
540 } |
|
|
541 |
|
5305
|
542 void |
|
5794
|
543 initialize_history (void) |
|
|
544 { |
|
5872
|
545 command_history::set_file (Vhistory_file); |
|
5800
|
546 command_history::set_size (Vhistory_size); |
|
|
547 |
|
5794
|
548 command_history::read (false); |
|
|
549 } |
|
|
550 |
|
|
551 void |
|
5305
|
552 octave_history_write_timestamp (void) |
|
|
553 { |
|
|
554 octave_localtime now; |
|
|
555 |
|
|
556 std::string timestamp = now.strftime (Vhistory_timestamp_format_string); |
|
|
557 |
|
|
558 if (! timestamp.empty ()) |
|
|
559 command_history::add (timestamp); |
|
|
560 } |
|
|
561 |
|
4208
|
562 DEFCMD (edit_history, args, , |
|
3332
|
563 "-*- texinfo -*-\n\ |
|
|
564 @deffn {Command} edit_history options\n\ |
|
|
565 If invoked with no arguments, @code{edit_history} allows you to edit the\n\ |
|
|
566 history list using the editor named by the variable @code{EDITOR}. The\n\ |
|
|
567 commands to be edited are first copied to a temporary file. When you\n\ |
|
|
568 exit the editor, Octave executes the commands that remain in the file.\n\ |
|
|
569 It is often more convenient to use @code{edit_history} to define functions \n\ |
|
|
570 rather than attempting to enter them directly on the command line.\n\ |
|
|
571 By default, the block of commands is executed as soon as you exit the\n\ |
|
|
572 editor. To avoid executing any commands, simply delete all the lines\n\ |
|
|
573 from the buffer before exiting the editor.\n\ |
|
|
574 \n\ |
|
|
575 The @code{edit_history} command takes two optional arguments specifying\n\ |
|
|
576 the history numbers of first and last commands to edit. For example,\n\ |
|
|
577 the command\n\ |
|
529
|
578 \n\ |
|
3332
|
579 @example\n\ |
|
|
580 edit_history 13\n\ |
|
|
581 @end example\n\ |
|
|
582 \n\ |
|
|
583 @noindent\n\ |
|
|
584 extracts all the commands from the 13th through the last in the history\n\ |
|
|
585 list. The command\n\ |
|
|
586 \n\ |
|
|
587 @example\n\ |
|
|
588 edit_history 13 169\n\ |
|
|
589 @end example\n\ |
|
|
590 \n\ |
|
|
591 @noindent\n\ |
|
|
592 only extracts commands 13 through 169. Specifying a larger number for\n\ |
|
|
593 the first command than the last command reverses the list of commands\n\ |
|
|
594 before placing them in the buffer to be edited. If both arguments are\n\ |
|
|
595 omitted, the previous command in the history list is used.\n\ |
|
3333
|
596 @end deffn") |
|
529
|
597 { |
|
2086
|
598 octave_value_list retval; |
|
529
|
599 |
|
1755
|
600 int argc = args.length () + 1; |
|
|
601 |
|
1968
|
602 string_vector argv = args.make_argv ("edit_history"); |
|
1755
|
603 |
|
|
604 if (error_state) |
|
|
605 return retval; |
|
529
|
606 |
|
|
607 do_edit_history (argc, argv); |
|
|
608 |
|
|
609 return retval; |
|
|
610 } |
|
|
611 |
|
4208
|
612 DEFCMD (history, args, , |
|
3332
|
613 "-*- texinfo -*-\n\ |
|
|
614 @deffn {Command} history options\n\ |
|
|
615 If invoked with no arguments, @code{history} displays a list of commands\n\ |
|
|
616 that you have executed. Valid options are:\n\ |
|
|
617 \n\ |
|
|
618 @table @code\n\ |
|
|
619 @item -w @var{file}\n\ |
|
|
620 Write the current history to the file @var{file}. If the name is\n\ |
|
|
621 omitted, use the default history file (normally @file{~/.octave_hist}).\n\ |
|
529
|
622 \n\ |
|
3332
|
623 @item -r @var{file}\n\ |
|
|
624 Read the file @var{file}, replacing the current history list with its\n\ |
|
|
625 contents. If the name is omitted, use the default history file\n\ |
|
|
626 (normally @file{~/.octave_hist}).\n\ |
|
|
627 \n\ |
|
3499
|
628 @item @var{n}\n\ |
|
|
629 Only display the most recent @var{n} lines of history.\n\ |
|
3332
|
630 \n\ |
|
|
631 @item -q\n\ |
|
|
632 Don't number the displayed lines of history. This is useful for cutting\n\ |
|
|
633 and pasting commands if you are using the X Window System.\n\ |
|
|
634 @end table\n\ |
|
|
635 \n\ |
|
|
636 For example, to display the five most recent commands that you have\n\ |
|
|
637 typed without displaying line numbers, use the command\n\ |
|
|
638 @kbd{history -q 5}.\n\ |
|
3333
|
639 @end deffn") |
|
529
|
640 { |
|
2086
|
641 octave_value_list retval; |
|
529
|
642 |
|
1755
|
643 int argc = args.length () + 1; |
|
|
644 |
|
1968
|
645 string_vector argv = args.make_argv ("history"); |
|
1755
|
646 |
|
|
647 if (error_state) |
|
|
648 return retval; |
|
529
|
649 |
|
|
650 do_history (argc, argv); |
|
|
651 |
|
|
652 return retval; |
|
|
653 } |
|
|
654 |
|
4208
|
655 DEFCMD (run_history, args, , |
|
3332
|
656 "-*- texinfo -*-\n\ |
|
|
657 @deffn {Command} run_history [first] [last]\n\ |
|
|
658 Similar to @code{edit_history}, except that the editor is not invoked,\n\ |
|
|
659 and the commands are simply executed as they appear in the history list.\n\ |
|
3333
|
660 @end deffn") |
|
529
|
661 { |
|
2086
|
662 octave_value_list retval; |
|
529
|
663 |
|
1755
|
664 int argc = args.length () + 1; |
|
|
665 |
|
1968
|
666 string_vector argv = args.make_argv ("run_history"); |
|
1755
|
667 |
|
|
668 if (error_state) |
|
|
669 return retval; |
|
529
|
670 |
|
|
671 do_run_history (argc, argv); |
|
|
672 |
|
|
673 return retval; |
|
|
674 } |
|
|
675 |
|
5794
|
676 DEFUN (history_size, args, nargout, |
|
|
677 "-*- texinfo -*-\n\ |
|
|
678 @deftypefn {Built-in Function} {@var{val} =} history_size ()\n\ |
|
|
679 @deftypefnx {Built-in Function} {@var{old_val} =} history_size (@var{new_val})\n\ |
|
|
680 Query or set the internal variable that specifies how many entries\n\ |
|
|
681 to store in the history file. The default value is @code{1024},\n\ |
|
|
682 but may be overridden by the environment variable @code{OCTAVE_HISTSIZE}.\n\ |
|
|
683 @seealso{history_file, history_timestamp_format, saving_history}\n\ |
|
|
684 @end deftypefn") |
|
3016
|
685 { |
|
5800
|
686 int saved_history_size = Vhistory_size; |
|
|
687 |
|
|
688 octave_value retval |
|
|
689 = SET_INTERNAL_VARIABLE_WITH_LIMITS (history_size, -1, INT_MAX); |
|
|
690 |
|
|
691 if (Vhistory_size != saved_history_size) |
|
|
692 command_history::set_size (Vhistory_size); |
|
|
693 |
|
|
694 return retval; |
|
3016
|
695 } |
|
|
696 |
|
5794
|
697 DEFUN (history_file, args, nargout, |
|
|
698 "-*- texinfo -*-\n\ |
|
|
699 @deftypefn {Built-in Function} {@var{val} =} history_file ()\n\ |
|
|
700 @deftypefnx {Built-in Function} {@var{old_val} =} history_file (@var{new_val})\n\ |
|
|
701 Query or set the internal variable that specifies the name of the\n\ |
|
|
702 file used to store command history. The default value is\n\ |
|
|
703 @code{\"~/.octave_hist\"}, but may be overridden by the environment\n\ |
|
|
704 variable @code{OCTAVE_HISTFILE}.\n\ |
|
|
705 @seealso{history_size, saving_history, history_timestamp_format_string}\n\ |
|
|
706 @end deftypefn") |
|
5305
|
707 { |
|
5794
|
708 std::string saved_history_file = Vhistory_file; |
|
5305
|
709 |
|
5794
|
710 octave_value retval = SET_INTERNAL_VARIABLE (history_file); |
|
5305
|
711 |
|
5794
|
712 if (Vhistory_file != saved_history_file) |
|
5872
|
713 command_history::set_file (Vhistory_file); |
|
5305
|
714 |
|
5800
|
715 return retval; |
|
3016
|
716 } |
|
|
717 |
|
5794
|
718 DEFUN (history_timestamp_format_string, args, nargout, |
|
|
719 "-*- texinfo -*-\n\ |
|
|
720 @deftypefn {Built-in Function} {@var{val} =} history_timestamp_format_string ()\n\ |
|
|
721 @deftypefnx {Built-in Function} {@var{old_val} =} history_timestamp_format_string (@var{new_val})\n\ |
|
6653
|
722 Query or set the internal variable that specifies the format string\n\ |
|
5794
|
723 for the comment line that is written to the history file when Octave\n\ |
|
|
724 exits. The format string is passed to @code{strftime}. The default\n\ |
|
|
725 value is\n\ |
|
5305
|
726 \n\ |
|
|
727 @example\n\ |
|
|
728 \"# Octave VERSION, %a %b %d %H:%M:%S %Y %Z <USER@@HOST>\"\n\ |
|
|
729 @end example\n\ |
|
5794
|
730 @seealso{strftime, history_file, history_size, saving_history}\n\ |
|
|
731 @end deftypefn") |
|
|
732 { |
|
|
733 return SET_INTERNAL_VARIABLE (history_timestamp_format_string); |
|
|
734 } |
|
5305
|
735 |
|
5794
|
736 DEFUN (saving_history, args, nargout, |
|
|
737 "-*- texinfo -*-\n\ |
|
|
738 @deftypefn {Built-in Function} {@var{val} =} saving_history ()\n\ |
|
|
739 @deftypefnx {Built-in Function} {@var{old_val} =} saving_history (@var{new_val})\n\ |
|
|
740 Query or set the internal variable that controls whether commands entered\n\ |
|
|
741 on the command line are saved in the history file.\n\ |
|
6615
|
742 @seealso{history_file, history_size, history_timestamp_format}\n\ |
|
5794
|
743 @end deftypefn") |
|
|
744 { |
|
|
745 octave_value retval = SET_INTERNAL_VARIABLE (saving_history); |
|
|
746 |
|
|
747 command_history::ignore_entries (! Vsaving_history); |
|
|
748 |
|
|
749 return retval; |
|
3016
|
750 } |
|
|
751 |
|
1
|
752 /* |
|
|
753 ;;; Local Variables: *** |
|
|
754 ;;; mode: C++ *** |
|
|
755 ;;; End: *** |
|
|
756 */ |
