Mercurial > hg > octave-nkf
annotate src/oct-hist.cc @ 12385:c468c5b902b3 release-3-4-x ss-3-3-92
version is now 3.3.92
| author | John W. Eaton <jwe@octave.org> |
|---|---|
| date | Sun, 06 Feb 2011 06:27:19 -0500 |
| parents | 12df7854fa7c |
| children | f96b9b9f141b |
| rev | line source |
|---|---|
| 1 | 1 /* |
| 2 | |
| 11523 | 3 Copyright (C) 1993-2011 John W. Eaton |
| 1 | 4 |
| 5 This file is part of Octave. | |
| 6 | |
| 7 Octave is free software; you can redistribute it and/or modify it | |
| 8 under the terms of the GNU General Public License as published by the | |
| 7016 | 9 Free Software Foundation; either version 3 of the License, or (at your |
| 10 option) any later version. | |
| 1 | 11 |
| 12 Octave is distributed in the hope that it will be useful, but WITHOUT | |
| 13 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
| 14 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
| 15 for more details. | |
| 16 | |
| 17 You should have received a copy of the GNU General Public License | |
| 7016 | 18 along with Octave; see the file COPYING. If not, see |
| 19 <http://www.gnu.org/licenses/>. | |
| 1 | 20 |
| 2939 | 21 */ |
| 22 | |
| 23 /* | |
| 24 | |
| 1 | 25 The functions listed below were adapted from similar functions from |
| 26 GNU Bash, the Bourne Again SHell, copyright (C) 1987, 1989, 1991 Free | |
| 27 Software Foundation, Inc. | |
| 28 | |
| 29 do_history edit_history_readline | |
| 30 do_edit_history edit_history_add_hist | |
| 31 | |
| 32 */ | |
| 33 | |
| 240 | 34 #ifdef HAVE_CONFIG_H |
| 1192 | 35 #include <config.h> |
| 1 | 36 #endif |
| 37 | |
| 1343 | 38 #include <cstdlib> |
| 39 #include <cstring> | |
| 40 | |
| 1750 | 41 #include <string> |
| 42 | |
| 3503 | 43 #include <fstream> |
| 1350 | 44 |
| 1 | 45 #include <sys/types.h> |
| 46 #include <unistd.h> | |
| 1350 | 47 |
| 1799 | 48 #include "cmd-hist.h" |
| 1802 | 49 #include "file-ops.h" |
| 3016 | 50 #include "lo-mappers.h" |
| 2926 | 51 #include "oct-env.h" |
| 5305 | 52 #include "oct-time.h" |
| 1755 | 53 #include "str-vec.h" |
| 54 | |
| 2492 | 55 #include <defaults.h> |
| 1352 | 56 #include "defun.h" |
| 1 | 57 #include "error.h" |
| 3016 | 58 #include "gripes.h" |
| 1 | 59 #include "input.h" |
| 1742 | 60 #include "oct-hist.h" |
| 1750 | 61 #include "oct-obj.h" |
| 1352 | 62 #include "pager.h" |
| 3018 | 63 #include "parse.h" |
| 1352 | 64 #include "sighandlers.h" |
| 1690 | 65 #include "sysdep.h" |
| 1750 | 66 #include "toplev.h" |
| 1352 | 67 #include "unwind-prot.h" |
| 68 #include "utils.h" | |
| 2205 | 69 #include "variables.h" |
| 1 | 70 |
| 3018 | 71 // TRUE means input is coming from temporary history file. |
| 72 bool input_from_tmp_history_file = false; | |
| 168 | 73 |
| 5305 | 74 static std::string |
| 1 | 75 default_history_file (void) |
| 76 { | |
| 3523 | 77 std::string file; |
| 1 | 78 |
| 3523 | 79 std::string env_file = octave_env::getenv ("OCTAVE_HISTFILE"); |
| 1755 | 80 |
| 2926 | 81 if (! env_file.empty ()) |
| 6141 | 82 file = env_file; |
| 1 | 83 |
| 1755 | 84 if (file.empty ()) |
| 7272 | 85 file = file_ops::concat (octave_env::get_home_directory (), |
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86 ".octave_hist"); |
| 1 | 87 |
| 88 return file; | |
| 89 } | |
| 90 | |
| 5794 | 91 // Where history is saved. |
| 92 static std::string Vhistory_file = default_history_file (); | |
| 93 | |
| 5305 | 94 static int |
| 95 default_history_size (void) | |
| 96 { | |
| 97 int size = 1024; | |
| 98 | |
| 99 std::string env_size = octave_env::getenv ("OCTAVE_HISTSIZE"); | |
| 100 | |
| 101 if (! env_size.empty ()) | |
| 102 { | |
| 103 int val; | |
| 104 | |
| 105 if (sscanf (env_size.c_str (), "%d", &val) == 1) | |
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106 size = val > 0 ? val : 0; |
| 5305 | 107 } |
| 108 | |
| 109 return size; | |
| 110 } | |
| 111 | |
| 5794 | 112 // The number of lines to keep in the history file. |
| 113 static int Vhistory_size = default_history_size (); | |
| 114 | |
| 5305 | 115 static std::string |
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116 default_history_control (void) |
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117 { |
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118 std::string retval; |
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119 |
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120 std::string env_histcontrol = octave_env::getenv ("OCTAVE_HISTCONTROL"); |
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121 |
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122 if (! env_histcontrol.empty ()) |
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123 { |
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124 return env_histcontrol; |
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125 } |
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126 |
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127 return retval; |
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128 } |
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129 |
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130 // The number of lines to keep in the history file. |
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131 static std::string Vhistory_control = default_history_control (); |
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132 |
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133 static std::string |
| 5305 | 134 default_history_timestamp_format (void) |
| 135 { | |
| 136 return | |
| 137 std::string ("# Octave " OCTAVE_VERSION ", %a %b %d %H:%M:%S %Y %Z <") | |
| 138 + octave_env::get_user_name () | |
| 139 + std::string ("@") | |
| 140 + octave_env::get_host_name () | |
| 141 + std::string (">"); | |
| 142 } | |
| 143 | |
| 5794 | 144 // The format of the timestamp marker written to the history file when |
| 145 // Octave exits. | |
| 146 static std::string Vhistory_timestamp_format_string | |
| 147 = default_history_timestamp_format (); | |
| 148 | |
| 149 // TRUE if we are saving history. | |
| 150 bool Vsaving_history = true; | |
| 151 | |
| 581 | 152 // Display, save, or load history. Stolen and modified from bash. |
| 153 // | |
| 154 // Arg of -w FILENAME means write file, arg of -r FILENAME | |
| 155 // means read file, arg of -q means don't number lines. Arg of N | |
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156 // means only display that many items. |
| 581 | 157 |
| 1755 | 158 static void |
| 159 do_history (int argc, const string_vector& argv) | |
| 1 | 160 { |
| 161 int numbered_output = 1; | |
| 162 | |
| 1755 | 163 int i; |
| 164 for (i = 1; i < argc; i++) | |
| 1 | 165 { |
| 3523 | 166 std::string option = argv[i]; |
| 2435 | 167 |
| 168 if (option == "-r" || option == "-w" || option == "-a" | |
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169 || option == "-n") |
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170 { |
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171 if (i < argc - 1) |
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172 command_history::set_file (argv[i+1]); |
| 1 | 173 |
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174 if (option == "-a") |
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175 // Append `new' lines to file. |
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176 command_history::append (); |
| 2435 | 177 |
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178 else if (option == "-w") |
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179 // Write entire history. |
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180 command_history::write (); |
| 777 | 181 |
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182 else if (option == "-r") |
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183 // Read entire file. |
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184 command_history::read (); |
| 777 | 185 |
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186 else if (option == "-n") |
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187 // Read `new' history from file. |
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188 command_history::read_range (); |
| 777 | 189 |
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190 else |
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191 panic_impossible (); |
| 2435 | 192 |
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193 return; |
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194 } |
| 1755 | 195 else if (argv[i] == "-q") |
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196 numbered_output = 0; |
| 1755 | 197 else if (argv[i] == "--") |
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198 { |
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199 i++; |
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200 break; |
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201 } |
| 1 | 202 else |
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203 break; |
| 1 | 204 } |
| 205 | |
| 1799 | 206 int limit = -1; |
| 1 | 207 |
| 1755 | 208 if (i < argc) |
| 1 | 209 { |
| 1755 | 210 if (sscanf (argv[i].c_str (), "%d", &limit) != 1) |
| 1 | 211 { |
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212 if (argv[i][0] == '-') |
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213 error ("history: unrecognized option `%s'", argv[i].c_str ()); |
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214 else |
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215 error ("history: bad non-numeric arg `%s'", argv[i].c_str ()); |
| 1799 | 216 |
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217 return; |
| 1 | 218 } |
| 219 | |
| 220 if (limit < 0) | |
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221 limit = -limit; |
| 1799 | 222 } |
| 1 | 223 |
| 2926 | 224 string_vector hlist = command_history::list (limit, numbered_output); |
| 1 | 225 |
| 1799 | 226 int len = hlist.length (); |
| 227 | |
| 2095 | 228 for (i = 0; i < len; i++) |
| 229 octave_stdout << hlist[i] << "\n"; | |
| 1 | 230 } |
| 231 | |
| 581 | 232 // Read the edited history lines from STREAM and return them |
| 233 // one at a time. This can read unlimited length lines. The | |
| 2434 | 234 // caller should free the storage. |
| 581 | 235 |
| 1 | 236 static char * |
| 3551 | 237 edit_history_readline (std::fstream& stream) |
| 1 | 238 { |
| 239 char c; | |
| 240 int line_len = 128; | |
| 241 int lindex = 0; | |
| 242 char *line = new char [line_len]; | |
| 243 line[0] = '\0'; | |
| 244 | |
| 245 while (stream.get (c)) | |
| 246 { | |
| 247 if (lindex + 2 >= line_len) | |
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248 { |
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249 char *tmp_line = new char [line_len += 128]; |
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250 strcpy (tmp_line, line); |
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251 delete [] line; |
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252 line = tmp_line; |
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253 } |
| 1 | 254 |
| 255 if (c == '\n') | |
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256 { |
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257 line[lindex++] = '\n'; |
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258 line[lindex++] = '\0'; |
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259 return line; |
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260 } |
| 1 | 261 else |
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262 line[lindex++] = c; |
| 1 | 263 } |
| 264 | |
| 265 if (! lindex) | |
| 266 { | |
| 267 delete [] line; | |
| 529 | 268 return 0; |
| 1 | 269 } |
| 270 | |
| 271 if (lindex + 2 >= line_len) | |
| 272 { | |
| 273 char *tmp_line = new char [lindex+3]; | |
| 274 strcpy (tmp_line, line); | |
| 275 delete [] line; | |
| 276 line = tmp_line; | |
| 277 } | |
| 278 | |
| 1358 | 279 // Finish with newline if none in file. |
| 1 | 280 |
| 281 line[lindex++] = '\n'; | |
| 282 line[lindex++] = '\0'; | |
| 283 return line; | |
| 284 } | |
| 285 | |
| 581 | 286 // Use `command' to replace the last entry in the history list, which, |
| 287 // by this time, is `run_history blah...'. The intent is that the | |
| 1799 | 288 // new command becomes the history entry, and that `fc' should never |
| 581 | 289 // appear in the history list. This way you can do `run_history' to |
| 290 // your heart's content. | |
| 291 | |
| 64 | 292 static void |
| 3523 | 293 edit_history_repl_hist (const std::string& command) |
| 64 | 294 { |
| 1799 | 295 if (! command.empty ()) |
| 296 { | |
| 2926 | 297 string_vector hlist = command_history::list (); |
| 64 | 298 |
| 1799 | 299 int len = hlist.length (); |
| 64 | 300 |
| 1799 | 301 if (len > 0) |
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302 { |
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303 int i = len - 1; |
| 64 | 304 |
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305 std::string histent = command_history::get_entry (i); |
| 64 | 306 |
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307 if (! histent.empty ()) |
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308 { |
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309 std::string cmd = command; |
| 64 | 310 |
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311 int cmd_len = cmd.length (); |
| 64 | 312 |
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313 if (cmd[cmd_len - 1] == '\n') |
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314 cmd.resize (cmd_len - 1); |
| 64 | 315 |
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316 if (! cmd.empty ()) |
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317 command_history::replace_entry (i, cmd); |
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318 } |
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319 } |
| 64 | 320 } |
| 321 } | |
| 322 | |
| 1 | 323 static void |
| 3523 | 324 edit_history_add_hist (const std::string& line) |
| 1 | 325 { |
| 1799 | 326 if (! line.empty ()) |
| 1 | 327 { |
| 3523 | 328 std::string tmp = line; |
| 1 | 329 |
| 1799 | 330 int len = tmp.length (); |
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331 |
| 1799 | 332 if (len > 0 && tmp[len-1] == '\n') |
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333 tmp.resize (len - 1); |
| 1799 | 334 |
| 335 if (! tmp.empty ()) | |
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336 command_history::add (tmp); |
| 1 | 337 } |
| 338 } | |
| 339 | |
| 3536 | 340 static std::string |
| 1755 | 341 mk_tmp_hist_file (int argc, const string_vector& argv, |
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342 int insert_curr, const char *warn_for) |
| 1 | 343 { |
| 3523 | 344 std::string retval; |
| 1 | 345 |
| 2926 | 346 string_vector hlist = command_history::list (); |
| 1 | 347 |
| 1799 | 348 int hist_count = hlist.length (); |
| 1 | 349 |
| 1358 | 350 // The current command line is already part of the history list by |
| 351 // the time we get to this point. Delete it from the list. | |
| 1 | 352 |
| 353 hist_count -= 2; | |
| 1799 | 354 |
| 64 | 355 if (! insert_curr) |
| 2926 | 356 command_history::remove (hist_count); |
| 1799 | 357 |
| 1 | 358 hist_count--; |
| 359 | |
| 1358 | 360 // If no numbers have been specified, the default is to edit the |
| 361 // last command in the history list. | |
| 1 | 362 |
| 363 int hist_end = hist_count; | |
| 364 int hist_beg = hist_count; | |
| 365 int reverse = 0; | |
| 366 | |
| 1358 | 367 // Process options. |
| 1 | 368 |
| 369 int usage_error = 0; | |
| 370 if (argc == 3) | |
| 371 { | |
| 1755 | 372 if (sscanf (argv[1].c_str (), "%d", &hist_beg) != 1 |
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373 || sscanf (argv[2].c_str (), "%d", &hist_end) != 1) |
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374 usage_error = 1; |
| 1 | 375 else |
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376 { |
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377 hist_beg--; |
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378 hist_end--; |
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379 } |
| 1 | 380 } |
| 381 else if (argc == 2) | |
| 382 { | |
| 1755 | 383 if (sscanf (argv[1].c_str (), "%d", &hist_beg) != 1) |
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384 usage_error = 1; |
| 1 | 385 else |
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386 { |
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387 hist_beg--; |
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388 hist_end = hist_beg; |
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389 } |
| 1 | 390 } |
| 391 | |
| 392 if (hist_beg < 0 || hist_end < 0 || hist_beg > hist_count | |
| 393 || hist_end > hist_count) | |
| 394 { | |
| 64 | 395 error ("%s: history specification out of range", warn_for); |
| 1799 | 396 return retval; |
| 1 | 397 } |
| 398 | |
| 399 if (usage_error) | |
| 400 { | |
| 64 | 401 usage ("%s [first] [last]", warn_for); |
| 1799 | 402 return retval; |
| 1 | 403 } |
| 404 | |
| 405 if (hist_end < hist_beg) | |
| 406 { | |
| 407 int t = hist_end; | |
| 408 hist_end = hist_beg; | |
| 409 hist_beg = t; | |
| 410 reverse = 1; | |
| 411 } | |
| 412 | |
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413 std::string name = octave_tempnam ("", "oct-"); |
| 1 | 414 |
| 3551 | 415 std::fstream file (name.c_str (), std::ios::out); |
| 64 | 416 |
| 1 | 417 if (! file) |
| 418 { | |
| 1755 | 419 error ("%s: couldn't open temporary file `%s'", warn_for, |
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420 name.c_str ()); |
| 1799 | 421 return retval; |
| 1 | 422 } |
| 423 | |
| 424 if (reverse) | |
| 425 { | |
| 426 for (int i = hist_end; i >= hist_beg; i--) | |
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427 file << hlist[i] << "\n"; |
| 1 | 428 } |
| 429 else | |
| 430 { | |
| 431 for (int i = hist_beg; i <= hist_end; i++) | |
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432 file << hlist[i] << "\n"; |
| 1 | 433 } |
| 434 | |
| 435 file.close (); | |
| 436 | |
| 1755 | 437 return name; |
| 64 | 438 } |
| 439 | |
| 10411 | 440 static void |
| 441 unlink_cleanup (const char *file) | |
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442 { |
| 10411 | 443 gnulib::unlink (file); |
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444 } |
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445 |
| 1755 | 446 static void |
| 447 do_edit_history (int argc, const string_vector& argv) | |
| 64 | 448 { |
| 3523 | 449 std::string name = mk_tmp_hist_file (argc, argv, 0, "edit_history"); |
| 64 | 450 |
| 1755 | 451 if (name.empty ()) |
| 64 | 452 return; |
| 453 | |
| 1358 | 454 // Call up our favorite editor on the file of commands. |
| 1 | 455 |
| 5794 | 456 std::string cmd = VEDITOR; |
| 4469 | 457 cmd.append (" \""); |
| 1799 | 458 cmd.append (name); |
| 4469 | 459 cmd.append ("\""); |
| 1 | 460 |
| 1358 | 461 // Ignore interrupts while we are off editing commands. Should we |
| 462 // maybe avoid using system()? | |
| 1 | 463 |
| 2705 | 464 volatile octave_interrupt_handler old_interrupt_handler |
| 2554 | 465 = octave_ignore_interrupts (); |
| 1443 | 466 |
| 1799 | 467 system (cmd.c_str ()); |
| 1443 | 468 |
| 2554 | 469 octave_set_interrupt_handler (old_interrupt_handler); |
| 1 | 470 |
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471 // Write the commands to the history file since source_file |
| 1358 | 472 // disables command line history while it executes. |
| 1 | 473 |
| 3551 | 474 std::fstream file (name.c_str (), std::ios::in); |
| 1 | 475 |
| 476 char *line; | |
| 64 | 477 int first = 1; |
| 529 | 478 while ((line = edit_history_readline (file)) != 0) |
| 1 | 479 { |
| 1358 | 480 // Skip blank lines. |
| 1 | 481 |
| 482 if (line[0] == '\n') | |
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483 { |
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484 delete [] line; |
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485 continue; |
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486 } |
| 1 | 487 |
| 64 | 488 if (first) |
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489 { |
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490 first = 0; |
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491 edit_history_repl_hist (line); |
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492 } |
| 64 | 493 else |
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494 edit_history_add_hist (line); |
| 1 | 495 } |
| 496 | |
| 497 file.close (); | |
| 498 | |
| 1358 | 499 // Turn on command echo, so the output from this will make better |
| 500 // sense. | |
| 1 | 501 |
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502 unwind_protect frame; |
| 3018 | 503 |
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504 frame.add_fcn (unlink_cleanup, name.c_str ()); |
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505 frame.protect_var (Vecho_executing_commands); |
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506 frame.protect_var (input_from_tmp_history_file); |
| 3018 | 507 |
| 2205 | 508 Vecho_executing_commands = ECHO_CMD_LINE; |
| 3018 | 509 input_from_tmp_history_file = true; |
| 1 | 510 |
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511 source_file (name); |
| 1 | 512 } |
| 513 | |
| 1755 | 514 static void |
| 515 do_run_history (int argc, const string_vector& argv) | |
| 64 | 516 { |
| 3523 | 517 std::string name = mk_tmp_hist_file (argc, argv, 1, "run_history"); |
| 64 | 518 |
| 1755 | 519 if (name.empty ()) |
| 64 | 520 return; |
| 521 | |
| 1799 | 522 // Turn on command echo so the output from this will make better |
| 1358 | 523 // sense. |
| 64 | 524 |
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525 unwind_protect frame; |
| 3018 | 526 |
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527 frame.add_fcn (unlink_cleanup, name.c_str ()); |
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528 frame.protect_var (Vecho_executing_commands); |
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529 frame.protect_var (input_from_tmp_history_file); |
| 3018 | 530 |
| 2205 | 531 Vecho_executing_commands = ECHO_CMD_LINE; |
| 3018 | 532 input_from_tmp_history_file = true; |
| 64 | 533 |
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534 source_file (name); |
| 64 | 535 } |
| 536 | |
| 5305 | 537 void |
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538 initialize_history (bool read_history_file) |
| 5794 | 539 { |
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540 command_history::initialize (read_history_file, Vhistory_file, Vhistory_size, |
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541 Vhistory_control); |
| 5794 | 542 } |
| 543 | |
| 544 void | |
| 5305 | 545 octave_history_write_timestamp (void) |
| 546 { | |
| 547 octave_localtime now; | |
| 548 | |
| 549 std::string timestamp = now.strftime (Vhistory_timestamp_format_string); | |
| 550 | |
| 551 if (! timestamp.empty ()) | |
| 552 command_history::add (timestamp); | |
| 553 } | |
| 554 | |
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555 DEFUN (edit_history, args, , |
| 3332 | 556 "-*- texinfo -*-\n\ |
| 11547 | 557 @deftypefn {Command} {} edit_history [@var{first}] [@var{last}]\n\ |
| 3332 | 558 If invoked with no arguments, @code{edit_history} allows you to edit the\n\ |
| 10840 | 559 history list using the editor named by the variable @w{@env{EDITOR}}. The\n\ |
| 3332 | 560 commands to be edited are first copied to a temporary file. When you\n\ |
| 561 exit the editor, Octave executes the commands that remain in the file.\n\ | |
| 562 It is often more convenient to use @code{edit_history} to define functions \n\ | |
| 563 rather than attempting to enter them directly on the command line.\n\ | |
| 564 By default, the block of commands is executed as soon as you exit the\n\ | |
| 565 editor. To avoid executing any commands, simply delete all the lines\n\ | |
| 566 from the buffer before exiting the editor.\n\ | |
| 567 \n\ | |
| 568 The @code{edit_history} command takes two optional arguments specifying\n\ | |
| 569 the history numbers of first and last commands to edit. For example,\n\ | |
| 570 the command\n\ | |
| 529 | 571 \n\ |
| 3332 | 572 @example\n\ |
| 573 edit_history 13\n\ | |
| 574 @end example\n\ | |
| 575 \n\ | |
| 576 @noindent\n\ | |
| 577 extracts all the commands from the 13th through the last in the history\n\ | |
| 578 list. The command\n\ | |
| 579 \n\ | |
| 580 @example\n\ | |
| 581 edit_history 13 169\n\ | |
| 582 @end example\n\ | |
| 583 \n\ | |
| 584 @noindent\n\ | |
| 585 only extracts commands 13 through 169. Specifying a larger number for\n\ | |
| 586 the first command than the last command reverses the list of commands\n\ | |
| 587 before placing them in the buffer to be edited. If both arguments are\n\ | |
| 588 omitted, the previous command in the history list is used.\n\ | |
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589 @seealso{run_history}\n\ |
| 11547 | 590 @end deftypefn") |
| 529 | 591 { |
| 2086 | 592 octave_value_list retval; |
| 529 | 593 |
| 1755 | 594 int argc = args.length () + 1; |
| 595 | |
| 1968 | 596 string_vector argv = args.make_argv ("edit_history"); |
| 1755 | 597 |
| 598 if (error_state) | |
| 599 return retval; | |
| 529 | 600 |
| 601 do_edit_history (argc, argv); | |
| 602 | |
| 603 return retval; | |
| 604 } | |
| 605 | |
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606 DEFUN (history, args, , |
| 3332 | 607 "-*- texinfo -*-\n\ |
| 11547 | 608 @deftypefn {Command} {} history options\n\ |
| 3332 | 609 If invoked with no arguments, @code{history} displays a list of commands\n\ |
| 610 that you have executed. Valid options are:\n\ | |
| 611 \n\ | |
| 612 @table @code\n\ | |
| 613 @item -w @var{file}\n\ | |
| 614 Write the current history to the file @var{file}. If the name is\n\ | |
| 615 omitted, use the default history file (normally @file{~/.octave_hist}).\n\ | |
| 529 | 616 \n\ |
| 3332 | 617 @item -r @var{file}\n\ |
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618 Read the file @var{file}, appending its contents to the current \n\ |
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619 history list. If the name is omitted, use the default history file\n\ |
| 3332 | 620 (normally @file{~/.octave_hist}).\n\ |
| 621 \n\ | |
| 3499 | 622 @item @var{n}\n\ |
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623 Display only the most recent @var{n} lines of history.\n\ |
| 3332 | 624 \n\ |
| 625 @item -q\n\ | |
| 626 Don't number the displayed lines of history. This is useful for cutting\n\ | |
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627 and pasting commands using the X Window System.\n\ |
| 3332 | 628 @end table\n\ |
| 629 \n\ | |
| 630 For example, to display the five most recent commands that you have\n\ | |
| 631 typed without displaying line numbers, use the command\n\ | |
| 632 @kbd{history -q 5}.\n\ | |
| 11547 | 633 @end deftypefn") |
| 529 | 634 { |
| 2086 | 635 octave_value_list retval; |
| 529 | 636 |
| 1755 | 637 int argc = args.length () + 1; |
| 638 | |
| 1968 | 639 string_vector argv = args.make_argv ("history"); |
| 1755 | 640 |
| 641 if (error_state) | |
| 642 return retval; | |
| 529 | 643 |
| 644 do_history (argc, argv); | |
| 645 | |
| 646 return retval; | |
| 647 } | |
| 648 | |
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649 DEFUN (run_history, args, , |
| 3332 | 650 "-*- texinfo -*-\n\ |
| 11547 | 651 @deftypefn {Command} {} run_history [@var{first}] [@var{last}]\n\ |
| 3332 | 652 Similar to @code{edit_history}, except that the editor is not invoked,\n\ |
| 653 and the commands are simply executed as they appear in the history list.\n\ | |
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654 @seealso{edit_history}\n\ |
| 11547 | 655 @end deftypefn") |
| 529 | 656 { |
| 2086 | 657 octave_value_list retval; |
| 529 | 658 |
| 1755 | 659 int argc = args.length () + 1; |
| 660 | |
| 1968 | 661 string_vector argv = args.make_argv ("run_history"); |
| 1755 | 662 |
| 663 if (error_state) | |
| 664 return retval; | |
| 529 | 665 |
| 666 do_run_history (argc, argv); | |
| 667 | |
| 668 return retval; | |
| 669 } | |
| 670 | |
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671 DEFUN (history_control, args, nargout, |
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672 "-*- texinfo -*-\n\ |
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673 @deftypefn {Built-in Function} {@var{val} =} history_control ()\n\ |
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674 @deftypefnx {Built-in Function} {@var{old_val} =} history_control (@var{new_val})\n\ |
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675 Query or set the internal variable that specifies how commands are saved\n\ |
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676 to the history list. The default value is an empty character string,\n\ |
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677 but may be overridden by the environment variable\n\ |
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678 @w{@env{OCTAVE_HISTCONTROL}}.\n\ |
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679 \n\ |
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680 The value of @code{history_control} is a colon-separated list of values\n\ |
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681 controlling how commands are saved on the history list. If the list\n\ |
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682 of values includes @code{ignorespace}, lines which begin with a space\n\ |
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683 character are not saved in the history list. A value of @code{ignoredups}\n\ |
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684 causes lines matching the previous history entry to not be saved.\n\ |
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685 A value of @code{ignoreboth} is shorthand for @code{ignorespace} and\n\ |
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686 @code{ignoredups}. A value of @code{erasedups} causes all previous lines\n\ |
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687 matching the current line to be removed from the history list before that\n\ |
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688 line is saved. Any value not in the above list is ignored. If\n\ |
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689 @code{history_control} is the empty string, all commands are saved on\n\ |
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690 the history list, subject to the value of @code{saving_history}.\n\ |
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691 @seealso{history_file, history_size, history_timestamp_format_string, saving_history}\n\ |
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692 @end deftypefn") |
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693 { |
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694 std::string saved_history_control = Vhistory_control; |
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695 |
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696 octave_value retval = SET_INTERNAL_VARIABLE (history_control); |
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697 |
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698 if (Vhistory_control != saved_history_control) |
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699 command_history::process_histcontrol (Vhistory_control); |
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700 |
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701 return retval; |
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702 } |
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703 |
| 5794 | 704 DEFUN (history_size, args, nargout, |
| 705 "-*- texinfo -*-\n\ | |
| 10840 | 706 @deftypefn {Built-in Function} {@var{val} =} history_size ()\n\ |
| 5794 | 707 @deftypefnx {Built-in Function} {@var{old_val} =} history_size (@var{new_val})\n\ |
| 708 Query or set the internal variable that specifies how many entries\n\ | |
| 709 to store in the history file. The default value is @code{1024},\n\ | |
| 10840 | 710 but may be overridden by the environment variable @w{@env{OCTAVE_HISTSIZE}}.\n\ |
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711 @seealso{history_file, history_timestamp_format_string, saving_history}\n\ |
| 5794 | 712 @end deftypefn") |
| 3016 | 713 { |
| 5800 | 714 int saved_history_size = Vhistory_size; |
| 715 | |
| 716 octave_value retval | |
| 717 = SET_INTERNAL_VARIABLE_WITH_LIMITS (history_size, -1, INT_MAX); | |
| 718 | |
| 719 if (Vhistory_size != saved_history_size) | |
| 720 command_history::set_size (Vhistory_size); | |
| 721 | |
| 722 return retval; | |
| 3016 | 723 } |
| 724 | |
| 5794 | 725 DEFUN (history_file, args, nargout, |
| 726 "-*- texinfo -*-\n\ | |
| 10840 | 727 @deftypefn {Built-in Function} {@var{val} =} history_file ()\n\ |
| 5794 | 728 @deftypefnx {Built-in Function} {@var{old_val} =} history_file (@var{new_val})\n\ |
| 729 Query or set the internal variable that specifies the name of the\n\ | |
| 730 file used to store command history. The default value is\n\ | |
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731 @file{~/.octave_hist}, but may be overridden by the environment\n\ |
| 10840 | 732 variable @w{@env{OCTAVE_HISTFILE}}.\n\ |
| 5794 | 733 @seealso{history_size, saving_history, history_timestamp_format_string}\n\ |
| 734 @end deftypefn") | |
| 5305 | 735 { |
| 5794 | 736 std::string saved_history_file = Vhistory_file; |
| 5305 | 737 |
| 5794 | 738 octave_value retval = SET_INTERNAL_VARIABLE (history_file); |
| 5305 | 739 |
| 5794 | 740 if (Vhistory_file != saved_history_file) |
| 5872 | 741 command_history::set_file (Vhistory_file); |
| 5305 | 742 |
| 5800 | 743 return retval; |
| 3016 | 744 } |
| 745 | |
| 5794 | 746 DEFUN (history_timestamp_format_string, args, nargout, |
| 747 "-*- texinfo -*-\n\ | |
| 10840 | 748 @deftypefn {Built-in Function} {@var{val} =} history_timestamp_format_string ()\n\ |
| 5794 | 749 @deftypefnx {Built-in Function} {@var{old_val} =} history_timestamp_format_string (@var{new_val})\n\ |
| 6653 | 750 Query or set the internal variable that specifies the format string\n\ |
| 5794 | 751 for the comment line that is written to the history file when Octave\n\ |
| 752 exits. The format string is passed to @code{strftime}. The default\n\ | |
| 753 value is\n\ | |
| 5305 | 754 \n\ |
| 755 @example\n\ | |
| 756 \"# Octave VERSION, %a %b %d %H:%M:%S %Y %Z <USER@@HOST>\"\n\ | |
| 757 @end example\n\ | |
| 5794 | 758 @seealso{strftime, history_file, history_size, saving_history}\n\ |
| 759 @end deftypefn") | |
| 760 { | |
| 761 return SET_INTERNAL_VARIABLE (history_timestamp_format_string); | |
| 762 } | |
| 5305 | 763 |
| 5794 | 764 DEFUN (saving_history, args, nargout, |
| 765 "-*- texinfo -*-\n\ | |
| 10840 | 766 @deftypefn {Built-in Function} {@var{val} =} saving_history ()\n\ |
| 5794 | 767 @deftypefnx {Built-in Function} {@var{old_val} =} saving_history (@var{new_val})\n\ |
| 768 Query or set the internal variable that controls whether commands entered\n\ | |
| 769 on the command line are saved in the history file.\n\ | |
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770 @seealso{history_control, history_file, history_size, history_timestamp_format_string}\n\ |
| 5794 | 771 @end deftypefn") |
| 772 { | |
| 773 octave_value retval = SET_INTERNAL_VARIABLE (saving_history); | |
| 774 | |
| 775 command_history::ignore_entries (! Vsaving_history); | |
| 776 | |
| 777 return retval; | |
| 3016 | 778 } |