Mercurial > hg > octave-lyh
annotate src/input.cc @ 7787:6b521b1e3631
Add dbquit and make dbstep compatible. Use parser in debug mode to handle multi-line input
| author | David Bateman <dbateman@free.fr> |
|---|---|
| date | Tue, 13 May 2008 21:12:12 +0200 |
| parents | 8e14a01ffe9f |
| children | 5640a70cbab1 |
| rev | line source |
|---|---|
| 1 | 1 /* |
| 2 | |
| 7017 | 3 Copyright (C) 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, |
| 4 2002, 2003, 2004, 2005, 2006, 2007 John W. Eaton | |
| 1 | 5 |
| 6 This file is part of Octave. | |
| 7 | |
| 8 Octave is free software; you can redistribute it and/or modify it | |
| 9 under the terms of the GNU General Public License as published by the | |
| 7016 | 10 Free Software Foundation; either version 3 of the License, or (at your |
| 11 option) any later version. | |
| 1 | 12 |
| 13 Octave is distributed in the hope that it will be useful, but WITHOUT | |
| 14 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
| 15 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
| 16 for more details. | |
| 17 | |
| 18 You should have received a copy of the GNU General Public License | |
| 7016 | 19 along with Octave; see the file COPYING. If not, see |
| 20 <http://www.gnu.org/licenses/>. | |
| 1 | 21 |
| 22 */ | |
| 23 | |
| 2939 | 24 // Get command input interactively or from files. |
| 1 | 25 |
| 240 | 26 #ifdef HAVE_CONFIG_H |
| 1192 | 27 #include <config.h> |
| 1 | 28 #endif |
| 29 | |
| 1343 | 30 #include <cstdio> |
| 31 #include <cstdlib> | |
| 32 #include <cstring> | |
| 33 #include <cassert> | |
| 34 | |
| 3503 | 35 #include <iostream> |
| 5765 | 36 #include <sstream> |
| 1728 | 37 #include <string> |
| 38 | |
| 1350 | 39 #ifdef HAVE_UNISTD_H |
| 2442 | 40 #ifdef HAVE_SYS_TYPES_H |
| 529 | 41 #include <sys/types.h> |
| 2442 | 42 #endif |
| 529 | 43 #include <unistd.h> |
| 44 #endif | |
| 1343 | 45 |
| 2927 | 46 #include "cmd-edit.h" |
| 3189 | 47 #include "file-ops.h" |
| 4153 | 48 #include "quit.h" |
| 1755 | 49 #include "str-vec.h" |
| 50 | |
| 1352 | 51 #include "defun.h" |
| 52 #include "dirfns.h" | |
| 1 | 53 #include "error.h" |
| 2181 | 54 #include "gripes.h" |
| 3016 | 55 #include "help.h" |
| 1 | 56 #include "input.h" |
| 5832 | 57 #include "load-path.h" |
| 1352 | 58 #include "oct-map.h" |
| 1742 | 59 #include "oct-hist.h" |
| 1670 | 60 #include "toplev.h" |
| 1755 | 61 #include "oct-obj.h" |
| 1 | 62 #include "pager.h" |
| 529 | 63 #include "parse.h" |
| 1352 | 64 #include "pathlen.h" |
| 3772 | 65 #include "pt.h" |
| 1755 | 66 #include "pt-const.h" |
| 3805 | 67 #include "pt-stmt.h" |
| 1352 | 68 #include "sighandlers.h" |
| 1114 | 69 #include "sysdep.h" |
|
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70 #include "toplev.h" |
| 3098 | 71 #include "unwind-prot.h" |
| 1352 | 72 #include "utils.h" |
| 73 #include "variables.h" | |
| 529 | 74 |
| 2181 | 75 // Primary prompt string. |
| 5794 | 76 static std::string VPS1 = "\\s:\\#> "; |
| 2181 | 77 |
| 78 // Secondary prompt string. | |
| 5794 | 79 static std::string VPS2 = "> "; |
| 2181 | 80 |
| 81 // String printed before echoed input (enabled by --echo-input). | |
| 5794 | 82 std::string VPS4 = "+ "; |
| 2181 | 83 |
| 3019 | 84 // Echo commands as they are executed? |
| 85 // | |
| 86 // 1 ==> echo commands read from script files | |
| 87 // 2 ==> echo commands from functions | |
| 88 // 4 ==> echo commands read from command line | |
| 89 // | |
| 90 // more than one state can be active at once. | |
| 5794 | 91 int Vecho_executing_commands = ECHO_OFF; |
| 3019 | 92 |
| 3165 | 93 // The time we last printed a prompt. |
| 5832 | 94 octave_time Vlast_prompt_time = 0.0; |
| 3165 | 95 |
| 2181 | 96 // Character to append after successful command-line completion attempts. |
| 5794 | 97 static char Vcompletion_append_char = ' '; |
| 2181 | 98 |
| 1 | 99 // Global pointer for eval(). |
| 3523 | 100 std::string current_eval_string; |
| 1 | 101 |
| 3019 | 102 // TRUE means get input from current_eval_string. |
| 103 bool get_input_from_eval_string = false; | |
| 1 | 104 |
| 3877 | 105 // TRUE means we haven't been asked for the input from |
| 106 // current_eval_string yet. | |
| 107 bool input_from_eval_string_pending = false; | |
| 108 | |
| 5189 | 109 // TRUE means that input is coming from a file that was named on |
| 110 // the command line. | |
| 111 bool input_from_command_line_file = false; | |
| 112 | |
| 3019 | 113 // TRUE means we're parsing a function file. |
| 114 bool reading_fcn_file = false; | |
| 1 | 115 |
| 338 | 116 // Simple name of function file we are reading. |
| 3523 | 117 std::string curr_fcn_file_name; |
| 1606 | 118 |
| 119 // Full name of file we are reading. | |
| 3523 | 120 std::string curr_fcn_file_full_name; |
| 1 | 121 |
| 3019 | 122 // TRUE means we're parsing a script file. |
| 123 bool reading_script_file = false; | |
| 1 | 124 |
| 125 // If we are reading from an M-file, this is it. | |
| 529 | 126 FILE *ff_instream = 0; |
| 1 | 127 |
| 3019 | 128 // TRUE means this is an interactive shell. |
| 129 bool interactive = false; | |
| 1 | 130 |
| 3019 | 131 // TRUE means the user forced this shell to be interactive (-i). |
| 132 bool forced_interactive = false; | |
| 1 | 133 |
| 134 // Should we issue a prompt? | |
| 135 int promptflag = 1; | |
| 136 | |
| 137 // The current line of input, from wherever. | |
| 3523 | 138 std::string current_input_line; |
| 1 | 139 |
| 3804 | 140 // TRUE after a call to completion_matches. |
| 2299 | 141 bool octave_completion_matches_called = false; |
| 142 | |
| 6257 | 143 // TRUE if the plotting system has requested a call to drawnow at |
| 144 // the next user prompt. | |
| 7409 | 145 bool Vdrawnow_requested = false; |
| 6257 | 146 |
|
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147 // TRUE if we are in debugging mode. |
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parents:
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148 bool Vdebugging = false; |
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parents:
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149 |
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150 // The current line that we are debugging |
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151 int Vdebugging_current_line = -1; |
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parents:
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diff
changeset
|
152 |
| 7294 | 153 // TRUE if we are running in the Emacs GUD mode. |
| 154 static bool Vgud_mode = false; | |
| 155 | |
| 1044 | 156 static void |
| 3523 | 157 do_input_echo (const std::string& input_string) |
| 1044 | 158 { |
| 1588 | 159 int do_echo = reading_script_file ? |
| 2205 | 160 (Vecho_executing_commands & ECHO_SCRIPTS) |
| 2618 | 161 : (Vecho_executing_commands & ECHO_CMD_LINE) && ! forced_interactive; |
| 1588 | 162 |
| 163 if (do_echo) | |
| 1044 | 164 { |
| 1403 | 165 if (forced_interactive) |
| 166 { | |
| 1755 | 167 if (promptflag > 0) |
| 5794 | 168 octave_stdout << command_editor::decode_prompt_string (VPS1); |
| 1755 | 169 else |
| 5794 | 170 octave_stdout << command_editor::decode_prompt_string (VPS2); |
| 1403 | 171 } |
| 172 else | |
| 5794 | 173 octave_stdout << command_editor::decode_prompt_string (VPS4); |
| 1044 | 174 |
| 1755 | 175 if (! input_string.empty ()) |
| 1044 | 176 { |
| 2095 | 177 octave_stdout << input_string; |
| 1755 | 178 |
| 179 if (input_string[input_string.length () - 1] != '\n') | |
| 2095 | 180 octave_stdout << "\n"; |
| 1044 | 181 } |
| 182 } | |
| 183 } | |
| 184 | |
| 3536 | 185 std::string |
| 3523 | 186 gnu_readline (const std::string& s, bool force_readline) |
| 1822 | 187 { |
| 5142 | 188 OCTAVE_QUIT; |
| 189 | |
| 3523 | 190 std::string retval; |
| 1822 | 191 |
| 2927 | 192 if (line_editing || force_readline) |
| 1822 | 193 { |
| 3219 | 194 bool eof; |
| 1898 | 195 |
| 3219 | 196 retval = command_editor::readline (s, eof); |
| 197 | |
| 198 if (! eof && retval.empty ()) | |
| 2927 | 199 retval = "\n"; |
| 1822 | 200 } |
| 201 else | |
| 202 { | |
| 2927 | 203 if (! s.empty () && (interactive || forced_interactive)) |
| 2618 | 204 { |
| 2927 | 205 FILE *stream = command_editor::get_output_stream (); |
| 206 | |
| 207 fprintf (stream, s.c_str ()); | |
| 208 fflush (stream); | |
| 2618 | 209 } |
| 1822 | 210 |
| 2927 | 211 FILE *curr_stream = command_editor::get_input_stream (); |
| 212 | |
| 1822 | 213 if (reading_fcn_file || reading_script_file) |
| 214 curr_stream = ff_instream; | |
| 215 | |
| 2927 | 216 retval = octave_fgets (curr_stream); |
| 1822 | 217 } |
| 218 | |
| 219 return retval; | |
| 220 } | |
| 581 | 221 |
| 6257 | 222 static inline std::string |
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223 interactive_input (const std::string& s, bool force_readline = false) |
| 6257 | 224 { |
| 225 Vlast_prompt_time.stamp (); | |
| 226 | |
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227 if (Vdrawnow_requested && (interactive || forced_interactive)) |
| 6257 | 228 { |
| 229 feval ("drawnow"); | |
| 230 | |
| 6367 | 231 flush_octave_stdout (); |
| 232 | |
| 6305 | 233 // We set Vdrawnow_requested to false even if there is an error |
| 234 // in drawnow so that the error doesn't reappear at every prompt. | |
| 235 | |
| 6257 | 236 Vdrawnow_requested = false; |
| 6305 | 237 |
| 238 if (error_state) | |
| 239 return "\n"; | |
| 6257 | 240 } |
| 241 | |
| 242 return gnu_readline (s, force_readline); | |
| 243 } | |
| 244 | |
| 3536 | 245 static std::string |
| 1 | 246 octave_gets (void) |
| 247 { | |
| 5142 | 248 OCTAVE_QUIT; |
| 249 | |
| 3523 | 250 std::string retval; |
| 1 | 251 |
| 1822 | 252 if ((interactive || forced_interactive) |
| 5832 | 253 && (! (reading_fcn_file |
| 254 || reading_script_file | |
| 255 || input_from_startup_file | |
| 256 || input_from_command_line_file))) | |
| 1 | 257 { |
| 5794 | 258 std::string ps = (promptflag > 0) ? VPS1 : VPS2; |
| 1755 | 259 |
| 3523 | 260 std::string prompt = command_editor::decode_prompt_string (ps); |
| 1 | 261 |
| 2618 | 262 pipe_handler_error_count = 0; |
| 263 | |
| 264 flush_octave_stdout (); | |
| 1 | 265 |
| 2095 | 266 octave_diary << prompt; |
| 581 | 267 |
| 6257 | 268 retval = interactive_input (prompt); |
| 5832 | 269 |
| 270 // There is no need to update the load_path cache if there is no | |
| 271 // user input. | |
| 7336 | 272 if (! retval.empty () && retval.find_first_not_of (" \t\n\r") != NPOS) |
| 5832 | 273 load_path::update (); |
| 1 | 274 } |
| 275 else | |
| 1822 | 276 retval = gnu_readline (""); |
| 1 | 277 |
| 2927 | 278 current_input_line = retval; |
| 1 | 279 |
| 1822 | 280 if (! current_input_line.empty ()) |
| 1 | 281 { |
| 5189 | 282 if (! (input_from_startup_file || input_from_command_line_file)) |
| 2927 | 283 command_history::add (current_input_line); |
| 1 | 284 |
| 3176 | 285 if (! (reading_fcn_file || reading_script_file)) |
| 286 { | |
| 287 octave_diary << current_input_line; | |
| 288 | |
| 289 if (current_input_line[current_input_line.length () - 1] != '\n') | |
| 290 octave_diary << "\n"; | |
| 291 } | |
| 581 | 292 |
| 1822 | 293 do_input_echo (current_input_line); |
| 1 | 294 } |
| 3176 | 295 else if (! (reading_fcn_file || reading_script_file)) |
| 296 octave_diary << "\n"; | |
| 581 | 297 |
| 1822 | 298 return retval; |
| 1 | 299 } |
| 300 | |
| 581 | 301 // Read a line from the input stream. |
| 302 | |
| 3536 | 303 static std::string |
| 1822 | 304 get_user_input (void) |
| 1 | 305 { |
| 5142 | 306 OCTAVE_QUIT; |
| 307 | |
| 3523 | 308 std::string retval; |
| 1 | 309 |
| 310 if (get_input_from_eval_string) | |
| 311 { | |
| 3877 | 312 if (input_from_eval_string_pending) |
| 313 { | |
| 314 input_from_eval_string_pending = false; | |
| 315 | |
| 316 retval = current_eval_string; | |
| 1822 | 317 |
| 3877 | 318 size_t len = retval.length (); |
| 1822 | 319 |
| 6206 | 320 if (len > 0 && retval[len-1] != '\n') |
| 3877 | 321 retval.append ("\n"); |
| 322 } | |
| 1822 | 323 } |
| 324 else | |
| 325 retval = octave_gets (); | |
| 326 | |
| 2927 | 327 current_input_line = retval; |
| 1822 | 328 |
| 2114 | 329 if (! get_input_from_eval_string) |
| 330 input_line_number++; | |
| 1822 | 331 |
| 332 return retval; | |
| 333 } | |
| 334 | |
| 335 int | |
| 336 octave_read (char *buf, unsigned max_size) | |
| 337 { | |
| 5775 | 338 // FIXME -- is this a safe way to buffer the input? |
| 2927 | 339 |
| 4046 | 340 static const char * const eol = "\n"; |
| 3523 | 341 static std::string input_buf; |
| 2927 | 342 static const char *pos = 0; |
| 343 static size_t chars_left = 0; | |
| 1822 | 344 |
| 345 int status = 0; | |
| 4046 | 346 if (chars_left == 0) |
| 1822 | 347 { |
| 2927 | 348 pos = 0; |
| 349 | |
| 350 input_buf = get_user_input (); | |
| 1822 | 351 |
| 2927 | 352 chars_left = input_buf.length (); |
| 353 | |
| 354 pos = input_buf.c_str (); | |
| 1822 | 355 } |
| 356 | |
| 357 if (chars_left > 0) | |
| 358 { | |
| 4046 | 359 size_t len = max_size > chars_left ? chars_left : max_size; |
| 2927 | 360 assert (len > 0); |
| 361 | |
| 4046 | 362 memcpy (buf, pos, len); |
| 1822 | 363 |
| 4046 | 364 chars_left -= len; |
| 365 pos += len; | |
| 1822 | 366 |
| 4046 | 367 // Make sure input ends with a new line character. |
| 368 if (chars_left == 0 && buf[len-1] != '\n') | |
| 369 { | |
| 370 if (len < max_size) | |
| 371 { | |
| 372 // There is enough room to plug the newline character in | |
| 373 // the buffer. | |
| 374 buf[len++] = '\n'; | |
| 375 } | |
| 376 else | |
| 377 { | |
| 378 // There isn't enough room to plug the newline character | |
| 379 // in the buffer so make sure it is returned on the next | |
| 380 // octave_read call. | |
| 381 pos = eol; | |
| 382 chars_left = 1; | |
| 383 } | |
| 1 | 384 } |
| 1822 | 385 |
| 4046 | 386 status = len; |
| 1 | 387 |
| 1044 | 388 } |
| 1822 | 389 else if (chars_left == 0) |
| 2862 | 390 { |
| 391 status = 0; | |
| 392 } | |
| 1822 | 393 else |
| 394 status = -1; | |
| 1044 | 395 |
| 1 | 396 return status; |
| 397 } | |
| 398 | |
| 581 | 399 // Fix things up so that input can come from file `name', printing a |
| 400 // warning if the file doesn't exist. | |
| 401 | |
| 1 | 402 FILE * |
| 3523 | 403 get_input_from_file (const std::string& name, int warn) |
| 1 | 404 { |
| 529 | 405 FILE *instream = 0; |
| 1 | 406 |
| 1750 | 407 if (name.length () > 0) |
|
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408 instream = fopen (name.c_str (), "rb"); |
| 1 | 409 |
| 529 | 410 if (! instream && warn) |
| 1750 | 411 warning ("%s: no such file or directory", name.c_str ()); |
| 1 | 412 |
| 338 | 413 if (reading_fcn_file || reading_script_file) |
| 339 | 414 ff_instream = instream; |
| 1 | 415 else |
| 2927 | 416 command_editor::set_input_stream (instream); |
| 1 | 417 |
| 418 return instream; | |
| 419 } | |
| 420 | |
| 581 | 421 // Fix things up so that input can come from the standard input. This |
| 422 // may need to become much more complicated, which is why it's in a | |
| 423 // separate function. | |
| 424 | |
| 1 | 425 FILE * |
| 426 get_input_from_stdin (void) | |
| 427 { | |
| 2927 | 428 command_editor::set_input_stream (stdin); |
| 429 return command_editor::get_input_stream (); | |
| 1 | 430 } |
| 431 | |
| 5775 | 432 // FIXME -- make this generate file names when appropriate. |
| 2921 | 433 |
| 2247 | 434 static string_vector |
| 3523 | 435 generate_possible_completions (const std::string& text, std::string& prefix, |
| 436 std::string& hint) | |
| 1280 | 437 { |
| 2247 | 438 string_vector names; |
| 1280 | 439 |
| 2921 | 440 prefix = ""; |
| 1280 | 441 |
| 4604 | 442 if (looks_like_struct (text)) |
| 1430 | 443 names = generate_struct_completions (text, prefix, hint); |
| 444 else | |
| 2247 | 445 names = make_name_list (); |
| 1280 | 446 |
| 2944 | 447 // Sort and remove duplicates. |
| 2348 | 448 |
| 2944 | 449 names.qsort (true); |
| 2348 | 450 |
| 1280 | 451 return names; |
| 452 } | |
| 453 | |
| 3536 | 454 static std::string |
| 3523 | 455 generate_completion (const std::string& text, int state) |
| 1280 | 456 { |
| 3523 | 457 std::string retval; |
| 2944 | 458 |
| 3523 | 459 static std::string prefix; |
| 460 static std::string hint; | |
| 1280 | 461 |
| 2921 | 462 static size_t hint_len = 0; |
| 1280 | 463 |
| 1 | 464 static int list_index = 0; |
| 2921 | 465 static int name_list_len = 0; |
| 4604 | 466 static int name_list_total_len = 0; |
| 2247 | 467 static string_vector name_list; |
| 4604 | 468 static string_vector file_name_list; |
| 1 | 469 |
| 1280 | 470 static int matches = 0; |
| 1 | 471 |
| 472 if (state == 0) | |
| 473 { | |
| 474 list_index = 0; | |
| 475 | |
| 2921 | 476 prefix = ""; |
| 1280 | 477 |
| 2921 | 478 hint = text; |
| 1280 | 479 |
| 480 name_list = generate_possible_completions (text, prefix, hint); | |
| 481 | |
| 2921 | 482 name_list_len = name_list.length (); |
| 483 | |
| 4604 | 484 file_name_list = command_editor::generate_filename_completions (text); |
| 485 | |
| 486 name_list.append (file_name_list); | |
| 487 | |
| 488 name_list_total_len = name_list.length (); | |
| 489 | |
| 2921 | 490 hint_len = hint.length (); |
| 1280 | 491 |
| 492 matches = 0; | |
| 2247 | 493 |
| 2921 | 494 for (int i = 0; i < name_list_len; i++) |
| 3565 | 495 if (hint == name_list[i].substr (0, hint_len)) |
| 2247 | 496 matches++; |
| 1 | 497 } |
| 498 | |
| 4604 | 499 if (name_list_total_len > 0 && matches > 0) |
| 1 | 500 { |
| 4604 | 501 while (list_index < name_list_total_len) |
| 244 | 502 { |
| 3523 | 503 std::string name = name_list[list_index]; |
| 2247 | 504 |
| 1280 | 505 list_index++; |
| 2247 | 506 |
| 3565 | 507 if (hint == name.substr (0, hint_len)) |
| 1280 | 508 { |
| 4604 | 509 if (list_index <= name_list_len && ! prefix.empty ()) |
| 2944 | 510 retval = prefix + "." + name; |
| 511 else | |
| 512 retval = name; | |
| 1280 | 513 |
| 5775 | 514 // FIXME -- looks_like_struct is broken for now, |
| 4179 | 515 // so it always returns false. |
| 516 | |
| 6979 | 517 if (matches == 1 && looks_like_struct (retval)) |
| 4179 | 518 { |
| 519 // Don't append anything, since we don't know | |
| 520 // whether it should be '(' or '.'. | |
| 521 | |
| 522 command_editor::set_completion_append_character ('\0'); | |
| 523 } | |
| 524 else | |
| 525 command_editor::set_completion_append_character | |
| 526 (Vcompletion_append_char); | |
| 1280 | 527 |
| 2944 | 528 break; |
| 1280 | 529 } |
| 244 | 530 } |
| 1 | 531 } |
| 532 | |
| 2944 | 533 return retval; |
| 1 | 534 } |
| 535 | |
| 6979 | 536 static std::string |
| 537 quoting_filename (const std::string &text, int, char quote) | |
| 538 { | |
| 539 if (quote) | |
| 540 return text; | |
| 541 else | |
| 542 return (std::string ("'") + text); | |
| 543 } | |
| 544 | |
| 2927 | 545 void |
| 546 initialize_command_input (void) | |
| 547 { | |
| 548 // If we are using readline, this allows conditional parsing of the | |
| 549 // .inputrc file. | |
| 269 | 550 |
| 2927 | 551 command_editor::set_name ("Octave"); |
| 1358 | 552 |
| 5775 | 553 // FIXME -- this needs to include a comma too, but that |
| 3933 | 554 // causes trouble for the new struct element completion code. |
| 555 | |
| 4272 | 556 static const char *s = "\t\n !\"\'*+-/:;<=>(){}[\\]^`~"; |
| 3933 | 557 |
| 558 command_editor::set_basic_word_break_characters (s); | |
| 559 | |
| 560 command_editor::set_completer_word_break_characters (s); | |
| 561 | |
| 3004 | 562 command_editor::set_basic_quote_characters ("\""); |
| 2944 | 563 |
| 6979 | 564 command_editor::set_filename_quote_characters (" \t\n\\\"'@<>=;|&()#$`?*[!:{"); |
| 565 command_editor::set_completer_quote_characters ("'\""); | |
| 566 | |
| 2944 | 567 command_editor::set_completion_function (generate_completion); |
| 6979 | 568 |
| 569 command_editor::set_quoting_function (quoting_filename); | |
| 269 | 570 } |
| 571 | |
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572 static void |
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573 get_debug_input (const std::string& prompt) |
| 269 | 574 { |
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575 octave_user_code *caller = octave_call_stack::caller_user_code (); |
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576 std::string nm; |
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577 |
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578 if (caller) |
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579 { |
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580 nm = caller->fcn_file_name (); |
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581 |
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582 if (nm.empty ()) |
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583 nm = caller->name (); |
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584 |
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585 Vdebugging_current_line = octave_call_stack::current_line (); |
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586 } |
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587 else |
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588 Vdebugging_current_line = -1; |
| 3180 | 589 |
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590 std::ostringstream buf; |
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591 |
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592 if (! nm.empty ()) |
| 3180 | 593 { |
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594 if (Vgud_mode) |
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595 { |
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596 static char ctrl_z = 'Z' & 0x1f; |
| 269 | 597 |
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598 buf << ctrl_z << ctrl_z << nm << ":" << Vdebugging_current_line; |
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599 } |
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600 else |
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601 { |
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602 buf << "stopped in " << nm; |
| 1 | 603 |
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604 if (Vdebugging_current_line > 0) |
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605 buf << " at line " << Vdebugging_current_line; |
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606 } |
| 3180 | 607 } |
| 608 | |
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609 std::string msg = buf.str (); |
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610 |
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611 if (! msg.empty ()) |
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612 message (Vgud_mode ? 0 : "keyboard", msg.c_str ()); |
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613 |
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614 unwind_protect::begin_frame ("get_debug_input"); |
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615 |
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616 unwind_protect_str (VPS1); |
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617 VPS1 = prompt; |
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618 |
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619 while (Vdebugging) |
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620 { |
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621 reset_error_handler (); |
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622 |
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623 reset_parser (); |
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624 |
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625 // This is the same as yyparse in parse.y. |
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626 int retval = octave_parse (); |
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627 |
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628 if (retval == 0 && global_command) |
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629 { |
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630 global_command->eval (); |
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631 |
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632 delete global_command; |
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633 |
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634 global_command = 0; |
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635 |
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636 OCTAVE_QUIT; |
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637 |
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638 if (octave_completion_matches_called) |
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639 octave_completion_matches_called = false; |
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640 } |
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641 } |
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642 |
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643 unwind_protect::run_frame ("get_debug_input"); |
| 529 | 644 } |
| 645 | |
| 581 | 646 // If the user simply hits return, this will produce an empty matrix. |
| 647 | |
| 2086 | 648 static octave_value_list |
|
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649 get_user_input (const octave_value_list& args, int nargout) |
| 529 | 650 { |
| 3100 | 651 octave_value_list retval; |
| 529 | 652 |
| 653 int nargin = args.length (); | |
| 654 | |
| 655 int read_as_string = 0; | |
| 656 | |
| 712 | 657 if (nargin == 2) |
| 529 | 658 read_as_string++; |
| 659 | |
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660 std::string prompt = args(0).string_value (); |
| 4975 | 661 |
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662 if (error_state) |
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663 { |
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664 error ("input: unrecognized argument"); |
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665 return retval; |
| 4975 | 666 } |
| 667 | |
| 2095 | 668 flush_octave_stdout (); |
| 529 | 669 |
| 4565 | 670 octave_diary << prompt; |
| 671 | |
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672 std::string input_buf = interactive_input (prompt.c_str (), true); |
| 529 | 673 |
|
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674 if (! (error_state || input_buf.empty ())) |
| 529 | 675 { |
| 1799 | 676 if (! input_from_startup_file) |
| 2927 | 677 command_history::add (input_buf); |
| 529 | 678 |
| 2927 | 679 size_t len = input_buf.length (); |
| 529 | 680 |
| 4565 | 681 octave_diary << input_buf; |
| 682 | |
| 683 if (input_buf[len - 1] != '\n') | |
| 684 octave_diary << "\n"; | |
| 685 | |
| 529 | 686 if (len < 1) |
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687 return read_as_string ? octave_value ("") : octave_value (Matrix ()); |
| 3772 | 688 |
| 689 if (read_as_string) | |
| 963 | 690 { |
| 5775 | 691 // FIXME -- fix gnu_readline and octave_gets instead! |
| 3081 | 692 if (input_buf.length () == 1 && input_buf[0] == '\n') |
| 3100 | 693 retval(0) = ""; |
| 3081 | 694 else |
| 3100 | 695 retval(0) = input_buf; |
| 963 | 696 } |
| 529 | 697 else |
| 698 { | |
| 699 int parse_status = 0; | |
| 2900 | 700 |
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701 retval = eval_string (input_buf, true, parse_status, nargout); |
| 3100 | 702 |
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703 if (! Vdebugging && retval.length () == 0) |
| 3100 | 704 retval(0) = Matrix (); |
| 529 | 705 } |
| 706 } | |
| 707 else | |
| 708 error ("input: reading user-input failed!"); | |
| 709 | |
| 710 return retval; | |
| 711 } | |
| 712 | |
| 3100 | 713 DEFUN (input, args, nargout, |
| 3372 | 714 "-*- texinfo -*-\n\ |
| 715 @deftypefn {Built-in Function} {} input (@var{prompt})\n\ | |
| 716 @deftypefnx {Built-in Function} {} input (@var{prompt}, \"s\")\n\ | |
| 717 Print a prompt and wait for user input. For example,\n\ | |
| 718 \n\ | |
| 719 @example\n\ | |
| 720 input (\"Pick a number, any number! \")\n\ | |
| 721 @end example\n\ | |
| 722 \n\ | |
| 723 @noindent\n\ | |
| 724 prints the prompt\n\ | |
| 725 \n\ | |
| 726 @example\n\ | |
| 727 Pick a number, any number!\n\ | |
| 728 @end example\n\ | |
| 529 | 729 \n\ |
| 3372 | 730 @noindent\n\ |
| 731 and waits for the user to enter a value. The string entered by the user\n\ | |
| 732 is evaluated as an expression, so it may be a literal constant, a\n\ | |
| 733 variable name, or any other valid expression.\n\ | |
| 734 \n\ | |
| 735 Currently, @code{input} only returns one value, regardless of the number\n\ | |
| 736 of values produced by the evaluation of the expression.\n\ | |
| 737 \n\ | |
| 738 If you are only interested in getting a literal string value, you can\n\ | |
| 739 call @code{input} with the character string @code{\"s\"} as the second\n\ | |
| 740 argument. This tells Octave to return the string entered by the user\n\ | |
| 741 directly, without evaluating it first.\n\ | |
| 742 \n\ | |
| 743 Because there may be output waiting to be displayed by the pager, it is\n\ | |
| 744 a good idea to always call @code{fflush (stdout)} before calling\n\ | |
| 745 @code{input}. This will ensure that all pending output is written to\n\ | |
| 746 the screen before your prompt. @xref{Input and Output}.\n\ | |
| 747 @end deftypefn") | |
| 529 | 748 { |
| 2086 | 749 octave_value_list retval; |
| 529 | 750 |
| 751 int nargin = args.length (); | |
| 752 | |
| 712 | 753 if (nargin == 1 || nargin == 2) |
|
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754 retval = get_user_input (args, nargout); |
| 529 | 755 else |
| 5823 | 756 print_usage (); |
| 529 | 757 |
| 758 return retval; | |
| 759 } | |
| 760 | |
| 5640 | 761 bool |
| 762 octave_yes_or_no (const std::string& prompt) | |
| 763 { | |
| 764 std::string prompt_string = prompt + "(yes or no) "; | |
| 765 | |
| 766 while (1) | |
| 767 { | |
|
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768 std::string input_buf = interactive_input (prompt_string, true); |
| 5640 | 769 |
| 770 if (input_buf == "yes") | |
| 771 return true; | |
| 772 else if (input_buf == "no") | |
| 773 return false; | |
| 774 else | |
| 775 message (0, "Please answer yes or no."); | |
| 776 } | |
| 777 } | |
| 778 | |
| 779 DEFUN (yes_or_no, args, , | |
| 780 "-*- texinfo -*-\n\ | |
| 781 @deftypefn {Built-in Function} {} yes_or_no (@var{prompt})\n\ | |
| 782 Ask the user a yes-or-no question. Return 1 if the answer is yes.\n\ | |
| 783 Takes one argument, which is the string to display to ask the\n\ | |
| 784 question. It should end in a space; @samp{yes-or-no-p} adds\n\ | |
| 785 @samp{(yes or no) } to it. The user must confirm the answer with\n\ | |
| 786 RET and can edit it until it has been confirmed.\n\ | |
| 787 @end deftypefn") | |
| 788 { | |
| 789 octave_value retval; | |
| 790 | |
| 791 int nargin = args.length (); | |
| 792 | |
| 793 if (nargin == 0 || nargin == 1) | |
| 794 { | |
| 795 std::string prompt; | |
| 796 | |
| 797 if (nargin == 1) | |
| 798 { | |
| 799 prompt = args(0).string_value (); | |
| 800 | |
| 801 if (error_state) | |
| 802 { | |
| 803 error ("yes_or_no: expecting argument to be character string"); | |
| 804 return retval; | |
| 805 } | |
| 806 } | |
| 807 | |
| 808 retval = octave_yes_or_no (prompt); | |
| 809 } | |
| 810 else | |
| 5823 | 811 print_usage (); |
| 5640 | 812 |
| 813 return retval; | |
| 814 } | |
| 815 | |
| 3098 | 816 static void |
| 817 restore_command_history (void *) | |
| 818 { | |
| 819 command_history::ignore_entries (! Vsaving_history); | |
| 820 } | |
| 821 | |
|
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822 static size_t saved_frame = 0; |
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823 |
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824 static void |
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825 restore_frame (void *) |
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826 { |
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827 octave_call_stack::goto_frame (saved_frame); |
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828 } |
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829 |
| 3707 | 830 octave_value |
| 831 do_keyboard (const octave_value_list& args) | |
| 832 { | |
| 833 octave_value retval; | |
| 834 | |
| 835 int nargin = args.length (); | |
| 836 | |
| 837 assert (nargin == 0 || nargin == 1); | |
| 838 | |
| 839 unwind_protect::begin_frame ("do_keyboard"); | |
| 840 | |
| 5775 | 841 // FIXME -- we shouldn't need both the |
| 3707 | 842 // command_history object and the |
| 843 // Vsaving_history variable... | |
| 844 command_history::ignore_entries (false); | |
| 845 | |
| 846 unwind_protect::add (restore_command_history, 0); | |
| 847 | |
| 848 unwind_protect_bool (Vsaving_history); | |
|
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849 unwind_protect_bool (Vdebugging); |
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850 |
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851 saved_frame = octave_call_stack::current_frame (); |
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852 unwind_protect::add (restore_frame); |
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853 unwind_protect_size_t (saved_frame); |
| 3707 | 854 |
| 855 Vsaving_history = true; | |
|
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856 Vdebugging = true; |
| 3707 | 857 |
|
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858 std::string prompt = "debug> "; |
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859 if (nargin > 0) |
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860 prompt = args(0).string_value (); |
| 4233 | 861 |
|
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862 if (! error_state) |
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863 get_debug_input (prompt); |
| 3707 | 864 |
| 865 unwind_protect::run_frame ("do_keyboard"); | |
| 866 | |
| 867 return retval; | |
| 868 } | |
| 869 | |
| 1957 | 870 DEFUN (keyboard, args, , |
| 3372 | 871 "-*- texinfo -*-\n\ |
| 872 @deftypefn {Built-in Function} {} keyboard (@var{prompt})\n\ | |
| 873 This function is normally used for simple debugging. When the\n\ | |
| 874 @code{keyboard} function is executed, Octave prints a prompt and waits\n\ | |
| 875 for user input. The input strings are then evaluated and the results\n\ | |
| 876 are printed. This makes it possible to examine the values of variables\n\ | |
| 877 within a function, and to assign new values to variables. No value is\n\ | |
| 878 returned from the @code{keyboard} function, and it continues to prompt\n\ | |
| 879 for input until the user types @samp{quit}, or @samp{exit}.\n\ | |
| 529 | 880 \n\ |
| 3372 | 881 If @code{keyboard} is invoked without any arguments, a default prompt of\n\ |
| 882 @samp{debug> } is used.\n\ | |
| 883 @end deftypefn") | |
| 529 | 884 { |
| 2086 | 885 octave_value_list retval; |
| 529 | 886 |
| 887 int nargin = args.length (); | |
| 888 | |
| 712 | 889 if (nargin == 0 || nargin == 1) |
|
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890 { |
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891 saved_frame = octave_call_stack::current_frame (); |
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892 unwind_protect::add (restore_frame); |
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893 unwind_protect_size_t (saved_frame); |
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894 |
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895 // Skip the frame assigned to the keyboard function. |
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896 octave_call_stack::goto_frame (1); |
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897 |
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898 do_keyboard (args); |
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899 |
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900 unwind_protect::run (); |
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901 } |
| 529 | 902 else |
| 5823 | 903 print_usage (); |
| 529 | 904 |
| 905 return retval; | |
| 906 } | |
| 907 | |
| 4208 | 908 DEFCMD (echo, args, , |
| 3332 | 909 "-*- texinfo -*-\n\ |
| 910 @deffn {Command} echo options\n\ | |
| 911 Control whether commands are displayed as they are executed. Valid\n\ | |
| 912 options are:\n\ | |
| 1588 | 913 \n\ |
| 3332 | 914 @table @code\n\ |
| 915 @item on\n\ | |
| 916 Enable echoing of commands as they are executed in script files.\n\ | |
| 917 \n\ | |
| 918 @item off\n\ | |
| 919 Disable echoing of commands as they are executed in script files.\n\ | |
| 1588 | 920 \n\ |
| 3332 | 921 @item on all\n\ |
| 922 Enable echoing of commands as they are executed in script files and\n\ | |
| 923 functions.\n\ | |
| 1588 | 924 \n\ |
| 3332 | 925 @item off all\n\ |
| 926 Disable echoing of commands as they are executed in script files and\n\ | |
| 927 functions.\n\ | |
| 928 @end table\n\ | |
| 929 \n\ | |
| 930 @noindent\n\ | |
| 931 If invoked without any arguments, @code{echo} toggles the current echo\n\ | |
| 932 state.\n\ | |
| 3333 | 933 @end deffn") |
| 1588 | 934 { |
| 2086 | 935 octave_value_list retval; |
| 1588 | 936 |
| 1755 | 937 int argc = args.length () + 1; |
| 938 | |
| 1968 | 939 string_vector argv = args.make_argv ("echo"); |
| 1755 | 940 |
| 941 if (error_state) | |
| 942 return retval; | |
| 1588 | 943 |
| 944 switch (argc) | |
| 945 { | |
| 946 case 1: | |
| 947 { | |
| 2205 | 948 if ((Vecho_executing_commands & ECHO_SCRIPTS) |
| 949 || (Vecho_executing_commands & ECHO_FUNCTIONS)) | |
| 5794 | 950 Vecho_executing_commands = ECHO_OFF; |
| 1588 | 951 else |
| 5794 | 952 Vecho_executing_commands = ECHO_SCRIPTS; |
| 1588 | 953 } |
| 954 break; | |
| 955 | |
| 956 case 2: | |
| 957 { | |
| 3523 | 958 std::string arg = argv[1]; |
| 1755 | 959 |
| 960 if (arg == "on") | |
| 5794 | 961 Vecho_executing_commands = ECHO_SCRIPTS; |
| 1755 | 962 else if (arg == "off") |
| 5794 | 963 Vecho_executing_commands = ECHO_OFF; |
| 1588 | 964 else |
| 5823 | 965 print_usage (); |
| 1588 | 966 } |
| 967 break; | |
| 968 | |
| 969 case 3: | |
| 970 { | |
| 3523 | 971 std::string arg = argv[1]; |
| 1755 | 972 |
| 973 if (arg == "on" && argv[2] == "all") | |
| 2800 | 974 { |
| 975 int tmp = (ECHO_SCRIPTS | ECHO_FUNCTIONS); | |
| 5794 | 976 Vecho_executing_commands = tmp; |
| 2800 | 977 } |
| 1755 | 978 else if (arg == "off" && argv[2] == "all") |
| 5794 | 979 Vecho_executing_commands = ECHO_OFF; |
| 1588 | 980 else |
| 5823 | 981 print_usage (); |
| 1588 | 982 } |
| 983 break; | |
| 984 | |
| 985 default: | |
| 5823 | 986 print_usage (); |
| 1588 | 987 break; |
| 988 } | |
| 989 | |
| 990 return retval; | |
| 991 } | |
| 992 | |
| 2234 | 993 DEFUN (completion_matches, args, nargout, |
| 3332 | 994 "-*- texinfo -*-\n\ |
| 995 @deftypefn {Built-in Function} {} completion_matches (@var{hint})\n\ | |
| 996 Generate possible completions given @var{hint}.\n\ | |
| 2299 | 997 \n\ |
| 998 This function is provided for the benefit of programs like Emacs which\n\ | |
| 3332 | 999 might be controlling Octave and handling user input. The current\n\ |
| 1000 command number is not incremented when this function is called. This is\n\ | |
| 1001 a feature, not a bug.\n\ | |
| 3333 | 1002 @end deftypefn") |
| 2234 | 1003 { |
| 2281 | 1004 octave_value retval; |
| 2234 | 1005 |
| 1006 int nargin = args.length (); | |
| 1007 | |
| 1008 if (nargin == 1) | |
| 1009 { | |
| 3523 | 1010 std::string hint = args(0).string_value (); |
| 2234 | 1011 |
| 1012 if (! error_state) | |
| 1013 { | |
| 1014 int n = 32; | |
| 1015 | |
| 1016 string_vector list (n); | |
| 1017 | |
| 1018 int k = 0; | |
| 1019 | |
| 1020 for (;;) | |
| 1021 { | |
| 3523 | 1022 std::string cmd = generate_completion (hint, k); |
| 2234 | 1023 |
| 2944 | 1024 if (! cmd.empty ()) |
| 2234 | 1025 { |
| 2944 | 1026 if (k == n) |
| 2234 | 1027 { |
| 2944 | 1028 n *= 2; |
| 1029 list.resize (n); | |
| 1030 } | |
| 2235 | 1031 |
| 2944 | 1032 list[k++] = cmd; |
| 2234 | 1033 } |
| 1034 else | |
| 1035 { | |
| 1036 list.resize (k); | |
| 1037 break; | |
| 1038 } | |
| 1039 } | |
| 1040 | |
| 1041 if (nargout > 0) | |
| 2281 | 1042 { |
| 1043 if (! list.empty ()) | |
| 1044 retval = list; | |
| 2282 | 1045 else |
| 1046 retval = ""; | |
| 2281 | 1047 } |
| 2234 | 1048 else |
| 1049 { | |
| 2235 | 1050 // We don't use string_vector::list_in_columns here |
| 1051 // because it will be easier for Emacs if the names | |
| 1052 // appear in a single column. | |
| 1053 | |
| 2234 | 1054 int len = list.length (); |
| 1055 | |
| 1056 for (int i = 0; i < len; i++) | |
| 1057 octave_stdout << list[i] << "\n"; | |
| 1058 } | |
| 2299 | 1059 |
| 1060 octave_completion_matches_called = true; | |
| 2234 | 1061 } |
| 1062 } | |
| 1063 else | |
| 5823 | 1064 print_usage (); |
| 2234 | 1065 |
| 1066 return retval; | |
| 1067 } | |
| 1068 | |
| 3189 | 1069 DEFUN (read_readline_init_file, args, , |
| 3448 | 1070 "-*- texinfo -*-\n\ |
| 1071 @deftypefn {Built-in Function} {} read_readline_init_file (@var{file})\n\ | |
| 7007 | 1072 Read the readline library initialization file @var{file}. If\n\ |
| 3448 | 1073 @var{file} is omitted, read the default initialization file (normally\n\ |
| 6615 | 1074 @file{~/.inputrc}).\n\ |
| 1075 \n\ | |
| 1076 @xref{Readline Init File, , , readline, GNU Readline Library},\n\ | |
| 1077 for details.\n\ | |
| 3448 | 1078 @end deftypefn") |
| 3189 | 1079 { |
| 1080 octave_value_list retval; | |
| 1081 | |
| 1082 int nargin = args.length (); | |
| 1083 | |
| 1084 if (nargin == 0) | |
| 1085 command_editor::read_init_file (); | |
| 1086 else if (nargin == 1) | |
| 1087 { | |
| 5872 | 1088 std::string file = args(0).string_value (); |
| 3189 | 1089 |
| 1090 if (! error_state) | |
| 1091 command_editor::read_init_file (file); | |
| 1092 } | |
| 1093 else | |
| 5823 | 1094 print_usage (); |
| 3189 | 1095 |
| 1096 return retval; | |
| 1097 } | |
| 1098 | |
|
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1099 DEFUN (re_read_readline_init_file, args, , |
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1100 "-*- texinfo -*-\n\ |
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1101 @deftypefn {Built-in Function} {} re_read_readline_init_file ()\n\ |
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1102 Re-read the last readline library initialization file that was read.\n\ |
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1103 @xref{Readline Init File, , , readline, GNU Readline Library},\n\ |
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1104 for details.\n\ |
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1105 @end deftypefn") |
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1106 { |
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1107 octave_value_list retval; |
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1108 |
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1109 if (args.length () == 0) |
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1110 command_editor::re_read_init_file (); |
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1111 else |
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1112 print_usage (); |
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1113 |
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1114 return retval; |
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1115 } |
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1116 |
| 3523 | 1117 static std::string hook_fcn; |
| 3498 | 1118 static octave_value user_data; |
| 1119 | |
| 4802 | 1120 static int |
| 3519 | 1121 input_event_hook (void) |
| 3498 | 1122 { |
| 4526 | 1123 if (is_valid_function (hook_fcn)) |
| 1124 { | |
| 1125 if (user_data.is_defined ()) | |
| 1126 feval (hook_fcn, user_data, 0); | |
| 1127 else | |
| 1128 feval (hook_fcn, octave_value_list (), 0); | |
| 1129 } | |
| 3498 | 1130 else |
| 4526 | 1131 { |
| 1132 hook_fcn = std::string (); | |
| 1133 user_data = octave_value (); | |
| 1134 | |
| 6913 | 1135 command_editor::remove_event_hook (input_event_hook); |
| 4802 | 1136 } |
| 1137 | |
| 1138 return 0; | |
| 3498 | 1139 } |
| 1140 | |
| 1141 DEFUN (input_event_hook, args, , | |
| 1142 "-*- texinfo -*-\n\ | |
| 1143 @deftypefn {Built-in Function} {[@var{ofcn}, @var{odata}] =} input_event_hook (@var{fcn}, @var{data})\n\ | |
| 1144 Given the name of a function as a string and any Octave value object,\n\ | |
| 1145 install @var{fcn} as a function to call periodically, when Octave is\n\ | |
| 1146 waiting for input. The function should have the form\n\ | |
| 1147 @example\n\ | |
| 1148 @var{fcn} (@var{data})\n\ | |
| 1149 @end example\n\ | |
| 1150 \n\ | |
| 1151 If @var{data} is omitted, Octave calls the function without any\n\ | |
| 1152 arguments. If both @var{fcn} and @var{data} are omitted, Octave\n\ | |
| 1153 clears the hook. In all cases, the name of the previous hook function\n\ | |
| 1154 and the user data are returned.\n\ | |
| 1155 @end deftypefn") | |
| 1156 { | |
| 1157 octave_value_list retval; | |
| 1158 | |
| 1159 int nargin = args.length (); | |
| 1160 | |
| 1161 if (nargin > 2) | |
| 5823 | 1162 print_usage (); |
| 3498 | 1163 else |
| 1164 { | |
| 1165 octave_value tmp_user_data; | |
| 1166 | |
| 3523 | 1167 std::string tmp_hook_fcn; |
| 3498 | 1168 |
| 1169 if (nargin > 1) | |
| 1170 tmp_user_data = args(1); | |
| 1171 | |
| 1172 if (nargin > 0) | |
| 1173 { | |
| 1174 tmp_hook_fcn = args(0).string_value (); | |
| 1175 | |
| 1176 if (error_state) | |
| 1177 { | |
| 1178 error ("input_event_hook: expecting string as first arg"); | |
| 1179 return retval; | |
| 1180 } | |
| 1181 | |
| 6913 | 1182 command_editor::add_event_hook (input_event_hook); |
| 3498 | 1183 } |
| 1184 | |
| 1185 if (nargin == 0) | |
| 6913 | 1186 command_editor::remove_event_hook (input_event_hook); |
| 3498 | 1187 |
| 1188 retval(1) = user_data; | |
| 1189 retval(0) = hook_fcn; | |
| 1190 | |
| 1191 hook_fcn = tmp_hook_fcn; | |
| 1192 user_data = tmp_user_data; | |
| 1193 } | |
| 1194 | |
| 1195 return retval; | |
| 1196 } | |
| 1197 | |
| 5794 | 1198 DEFUN (PS1, args, nargout, |
| 1199 "-*- texinfo -*-\n\ | |
| 1200 @deftypefn {Built-in Function} {@var{val} =} PS1 ()\n\ | |
| 1201 @deftypefnx {Built-in Function} {@var{old_val} =} PS1 (@var{new_val})\n\ | |
| 1202 Query or set the primary prompt string. When executing interactively,\n\ | |
| 1203 Octave displays the primary prompt when it is ready to read a command.\n\ | |
| 3332 | 1204 \n\ |
| 5794 | 1205 The default value of the primary prompt string is @code{\"\\s:\\#> \"}.\n\ |
| 1206 To change it, use a command like\n\ | |
| 3332 | 1207 \n\ |
| 1208 @example\n\ | |
| 7097 | 1209 octave:13> PS1 (\"\\\\u@@\\\\H> \")\n\ |
| 3332 | 1210 @end example\n\ |
| 1211 \n\ | |
| 1212 @noindent\n\ | |
| 1213 which will result in the prompt @samp{boris@@kremvax> } for the user\n\ | |
| 1214 @samp{boris} logged in on the host @samp{kremvax.kgb.su}. Note that two\n\ | |
| 5794 | 1215 backslashes are required to enter a backslash into a double-quoted\n\ |
| 1216 character string.\n\ | |
| 3332 | 1217 @xref{Strings}.\n\ |
| 6373 | 1218 @seealso{PS2, PS4}\n\ |
| 5794 | 1219 @end deftypefn") |
| 1220 { | |
| 1221 return SET_INTERNAL_VARIABLE (PS1); | |
| 1222 } | |
| 2181 | 1223 |
| 5794 | 1224 DEFUN (PS2, args, nargout, |
| 1225 "-*- texinfo -*-\n\ | |
| 1226 @deftypefn {Built-in Function} {@var{val} =} PS2 ()\n\ | |
| 1227 @deftypefnx {Built-in Function} {@var{old_val} =} PS2 (@var{new_val})\n\ | |
| 1228 Query or set the secondary prompt string. The secondary prompt is\n\ | |
| 1229 printed when Octave is expecting additional input to complete a\n\ | |
| 1230 command. For example, if you are typing a for loop that spans several\n\ | |
| 1231 lines, Octave will print the secondary prompt at the beginning of\n\ | |
| 1232 each line after the first. The default value of the secondary prompt\n\ | |
| 1233 string is @code{\"> \"}.\n\ | |
| 1234 @seealso{PS1, PS4}\n\ | |
| 1235 @end deftypefn") | |
| 1236 { | |
| 1237 return SET_INTERNAL_VARIABLE (PS2); | |
| 1238 } | |
| 2181 | 1239 |
| 5794 | 1240 DEFUN (PS4, args, nargout, |
| 1241 "-*- texinfo -*-\n\ | |
| 1242 @deftypefn {Built-in Function} {@var{val} =} PS4 ()\n\ | |
| 1243 @deftypefnx {Built-in Function} {@var{old_val} =} PS4 (@var{new_val})\n\ | |
| 1244 Query or set the character string used to prefix output produced\n\ | |
| 1245 when echoing commands when @code{echo_executing_commands} is enabled.\n\ | |
| 6620 | 1246 The default value is @code{\"+ \"}.\n\ |
| 1247 @xref{Invoking Octave from the Command Line}, for a description of\n\ | |
| 1248 @code{--echo-commands}.\n\ | |
| 5794 | 1249 @seealso{echo_executing_commands, PS1, PS2}\n\ |
| 1250 @end deftypefn") | |
| 1251 { | |
| 1252 return SET_INTERNAL_VARIABLE (PS4); | |
| 1253 } | |
| 2181 | 1254 |
| 5794 | 1255 DEFUN (completion_append_char, args, nargout, |
| 1256 "-*- texinfo -*-\n\ | |
| 1257 @deftypefn {Built-in Function} {@var{val} =} completion_append_char ()\n\ | |
| 1258 @deftypefnx {Built-in Function} {@var{old_val} =} completion_append_char (@var{new_val})\n\ | |
| 1259 Query or set the internal character variable that is appended to\n\ | |
| 1260 successful command-line completion attempts. The default\n\ | |
| 3332 | 1261 value is @code{\" \"} (a single space).\n\ |
| 5794 | 1262 @end deftypefn") |
| 1263 { | |
| 1264 return SET_INTERNAL_VARIABLE (completion_append_char); | |
| 1265 } | |
| 3019 | 1266 |
| 5794 | 1267 DEFUN (echo_executing_commands, args, nargout, |
| 1268 "-*- texinfo -*-\n\ | |
| 1269 @deftypefn {Built-in Function} {@var{val} =} echo_executing_commands ()\n\ | |
| 1270 @deftypefnx {Built-in Function} {@var{old_val} =} echo_executing_commands (@var{new_val})\n\ | |
| 1271 Query or set the internal variable that controls the echo state.\n\ | |
| 1272 It may be the sum of the following values:\n\ | |
| 3332 | 1273 \n\ |
| 1274 @table @asis\n\ | |
| 1275 @item 1\n\ | |
| 1276 Echo commands read from script files.\n\ | |
| 1277 \n\ | |
| 1278 @item 2\n\ | |
| 1279 Echo commands from functions.\n\ | |
| 1280 \n\ | |
| 1281 @item 4\n\ | |
| 1282 Echo commands read from command line.\n\ | |
| 1283 @end table\n\ | |
| 1284 \n\ | |
| 1285 More than one state can be active at once. For example, a value of 3 is\n\ | |
| 1286 equivalent to the command @kbd{echo on all}.\n\ | |
| 1287 \n\ | |
| 1288 The value of @code{echo_executing_commands} is set by the @kbd{echo}\n\ | |
| 1289 command and the command line option @code{--echo-input}.\n\ | |
| 5794 | 1290 @end deftypefn") |
| 1291 { | |
| 1292 return SET_INTERNAL_VARIABLE (echo_executing_commands); | |
| 2181 | 1293 } |
| 1294 | |
| 6257 | 1295 DEFUN (__request_drawnow__, args, , |
| 1296 "-*- texinfo -*-\n\ | |
| 1297 @deftypefn {Built-in Function} {} __request_drawnow__ ()\n\ | |
| 1298 @deftypefnx {Built-in Function} {} __request_drawnow__ (@var{flag})\n\ | |
| 6945 | 1299 Undocumented internal function.\n\ |
| 6257 | 1300 @end deftypefn") |
| 1301 { | |
| 1302 octave_value retval; | |
| 1303 | |
| 1304 int nargin = args.length (); | |
| 1305 | |
| 1306 if (nargin == 0) | |
| 1307 Vdrawnow_requested = true; | |
| 1308 else if (nargin == 1) | |
| 1309 Vdrawnow_requested = args(0).bool_value (); | |
| 1310 else | |
| 1311 print_usage (); | |
| 1312 | |
| 1313 return retval; | |
| 1314 } | |
| 1315 | |
| 7294 | 1316 DEFUN (__gud_mode__, args, , |
| 1317 "-*- texinfo -*-\n\ | |
| 1318 @deftypefn {Built-in Function} {} __gud_mode__ ()\n\ | |
| 1319 Undocumented internal function.\n\ | |
| 1320 @end deftypefn") | |
| 1321 { | |
| 1322 octave_value retval; | |
| 1323 | |
| 1324 int nargin = args.length (); | |
| 1325 | |
| 1326 if (nargin == 0) | |
| 1327 retval = Vgud_mode; | |
| 1328 else if (nargin == 1) | |
| 1329 Vgud_mode = args(0).bool_value (); | |
| 1330 else | |
| 1331 print_usage (); | |
| 1332 | |
| 1333 return retval; | |
| 1334 } | |
| 1335 | |
| 1 | 1336 /* |
| 1337 ;;; Local Variables: *** | |
| 1338 ;;; mode: C++ *** | |
| 1339 ;;; End: *** | |
| 1340 */ |