Mercurial > hg > octave-nkf
annotate src/input.cc @ 10066:2cd940306a06
make unwind_protect frames local
| author | Jaroslav Hajek <highegg@gmail.com> |
|---|---|
| date | Wed, 06 Jan 2010 13:18:41 +0100 |
| parents | 653716f3d976 |
| children | 829e69ec3110 |
| rev | line source |
|---|---|
| 1 | 1 /* |
| 2 | |
| 7017 | 3 Copyright (C) 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, |
| 8920 | 4 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009 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 | |
|
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51 #include "debug.h" |
| 1352 | 52 #include "defun.h" |
| 53 #include "dirfns.h" | |
| 1 | 54 #include "error.h" |
| 2181 | 55 #include "gripes.h" |
| 3016 | 56 #include "help.h" |
| 1 | 57 #include "input.h" |
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58 #include "lex.h" |
| 5832 | 59 #include "load-path.h" |
| 1352 | 60 #include "oct-map.h" |
| 1742 | 61 #include "oct-hist.h" |
| 1670 | 62 #include "toplev.h" |
| 1755 | 63 #include "oct-obj.h" |
| 1 | 64 #include "pager.h" |
| 529 | 65 #include "parse.h" |
| 1352 | 66 #include "pathlen.h" |
| 3772 | 67 #include "pt.h" |
| 1755 | 68 #include "pt-const.h" |
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69 #include "pt-eval.h" |
| 3805 | 70 #include "pt-stmt.h" |
| 1352 | 71 #include "sighandlers.h" |
| 1114 | 72 #include "sysdep.h" |
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73 #include "toplev.h" |
| 3098 | 74 #include "unwind-prot.h" |
| 1352 | 75 #include "utils.h" |
| 76 #include "variables.h" | |
| 529 | 77 |
| 2181 | 78 // Primary prompt string. |
| 5794 | 79 static std::string VPS1 = "\\s:\\#> "; |
| 2181 | 80 |
| 81 // Secondary prompt string. | |
| 5794 | 82 static std::string VPS2 = "> "; |
| 2181 | 83 |
| 84 // String printed before echoed input (enabled by --echo-input). | |
| 5794 | 85 std::string VPS4 = "+ "; |
| 2181 | 86 |
| 3019 | 87 // Echo commands as they are executed? |
| 88 // | |
| 89 // 1 ==> echo commands read from script files | |
| 90 // 2 ==> echo commands from functions | |
| 91 // 4 ==> echo commands read from command line | |
| 92 // | |
| 93 // more than one state can be active at once. | |
| 5794 | 94 int Vecho_executing_commands = ECHO_OFF; |
| 3019 | 95 |
| 3165 | 96 // The time we last printed a prompt. |
| 5832 | 97 octave_time Vlast_prompt_time = 0.0; |
| 3165 | 98 |
| 2181 | 99 // Character to append after successful command-line completion attempts. |
| 5794 | 100 static char Vcompletion_append_char = ' '; |
| 2181 | 101 |
| 1 | 102 // Global pointer for eval(). |
| 3523 | 103 std::string current_eval_string; |
| 1 | 104 |
| 3019 | 105 // TRUE means get input from current_eval_string. |
| 106 bool get_input_from_eval_string = false; | |
| 1 | 107 |
| 3877 | 108 // TRUE means we haven't been asked for the input from |
| 109 // current_eval_string yet. | |
| 110 bool input_from_eval_string_pending = false; | |
| 111 | |
| 5189 | 112 // TRUE means that input is coming from a file that was named on |
| 113 // the command line. | |
| 114 bool input_from_command_line_file = false; | |
| 115 | |
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116 // TRUE means that stdin is a terminal, not a pipe or redirected file. |
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117 bool stdin_is_tty = false; |
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118 |
| 3019 | 119 // TRUE means we're parsing a function file. |
| 120 bool reading_fcn_file = false; | |
| 1 | 121 |
| 9476 | 122 // TRUE means we're parsing a classdef file. |
| 123 bool reading_classdef_file = false; | |
| 124 | |
| 338 | 125 // Simple name of function file we are reading. |
| 3523 | 126 std::string curr_fcn_file_name; |
| 1606 | 127 |
| 128 // Full name of file we are reading. | |
| 3523 | 129 std::string curr_fcn_file_full_name; |
| 1 | 130 |
| 3019 | 131 // TRUE means we're parsing a script file. |
| 132 bool reading_script_file = false; | |
| 1 | 133 |
| 134 // If we are reading from an M-file, this is it. | |
| 529 | 135 FILE *ff_instream = 0; |
| 1 | 136 |
| 3019 | 137 // TRUE means this is an interactive shell. |
| 138 bool interactive = false; | |
| 1 | 139 |
| 3019 | 140 // TRUE means the user forced this shell to be interactive (-i). |
| 141 bool forced_interactive = false; | |
| 1 | 142 |
| 143 // Should we issue a prompt? | |
| 144 int promptflag = 1; | |
| 145 | |
| 146 // The current line of input, from wherever. | |
| 3523 | 147 std::string current_input_line; |
| 1 | 148 |
| 3804 | 149 // TRUE after a call to completion_matches. |
| 2299 | 150 bool octave_completion_matches_called = false; |
| 151 | |
| 6257 | 152 // TRUE if the plotting system has requested a call to drawnow at |
| 153 // the next user prompt. | |
| 7409 | 154 bool Vdrawnow_requested = false; |
| 6257 | 155 |
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156 // TRUE if we are in debugging mode. |
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157 bool Vdebugging = false; |
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158 |
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159 // If we are in debugging mode, this is the last command entered, so |
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160 // that we can repeat the previous command if the user just types RET. |
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161 static std::string last_debugging_command; |
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162 |
| 7294 | 163 // TRUE if we are running in the Emacs GUD mode. |
| 164 static bool Vgud_mode = false; | |
| 165 | |
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166 // The filemarker used to separate filenames from subfunction names |
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167 char Vfilemarker = '>'; |
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168 |
| 1044 | 169 static void |
| 3523 | 170 do_input_echo (const std::string& input_string) |
| 1044 | 171 { |
| 1588 | 172 int do_echo = reading_script_file ? |
| 2205 | 173 (Vecho_executing_commands & ECHO_SCRIPTS) |
| 2618 | 174 : (Vecho_executing_commands & ECHO_CMD_LINE) && ! forced_interactive; |
| 1588 | 175 |
| 176 if (do_echo) | |
| 1044 | 177 { |
| 1403 | 178 if (forced_interactive) |
| 179 { | |
| 1755 | 180 if (promptflag > 0) |
| 5794 | 181 octave_stdout << command_editor::decode_prompt_string (VPS1); |
| 1755 | 182 else |
| 5794 | 183 octave_stdout << command_editor::decode_prompt_string (VPS2); |
| 1403 | 184 } |
| 185 else | |
| 5794 | 186 octave_stdout << command_editor::decode_prompt_string (VPS4); |
| 1044 | 187 |
| 1755 | 188 if (! input_string.empty ()) |
| 1044 | 189 { |
| 2095 | 190 octave_stdout << input_string; |
| 1755 | 191 |
| 192 if (input_string[input_string.length () - 1] != '\n') | |
| 2095 | 193 octave_stdout << "\n"; |
| 1044 | 194 } |
| 195 } | |
| 196 } | |
| 197 | |
| 3536 | 198 std::string |
| 3523 | 199 gnu_readline (const std::string& s, bool force_readline) |
| 1822 | 200 { |
| 5142 | 201 OCTAVE_QUIT; |
| 202 | |
| 3523 | 203 std::string retval; |
| 1822 | 204 |
| 2927 | 205 if (line_editing || force_readline) |
| 1822 | 206 { |
| 3219 | 207 bool eof; |
| 1898 | 208 |
| 3219 | 209 retval = command_editor::readline (s, eof); |
| 210 | |
| 211 if (! eof && retval.empty ()) | |
| 2927 | 212 retval = "\n"; |
| 1822 | 213 } |
| 214 else | |
| 215 { | |
| 2927 | 216 if (! s.empty () && (interactive || forced_interactive)) |
| 2618 | 217 { |
| 2927 | 218 FILE *stream = command_editor::get_output_stream (); |
| 219 | |
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220 fputs (s.c_str (), stream); |
| 2927 | 221 fflush (stream); |
| 2618 | 222 } |
| 1822 | 223 |
| 2927 | 224 FILE *curr_stream = command_editor::get_input_stream (); |
| 225 | |
| 9476 | 226 if (reading_fcn_file || reading_script_file || reading_classdef_file) |
| 1822 | 227 curr_stream = ff_instream; |
| 228 | |
| 2927 | 229 retval = octave_fgets (curr_stream); |
| 1822 | 230 } |
| 231 | |
| 232 return retval; | |
| 233 } | |
| 581 | 234 |
| 6257 | 235 static inline std::string |
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236 interactive_input (const std::string& s, bool force_readline = false) |
| 6257 | 237 { |
| 238 Vlast_prompt_time.stamp (); | |
| 239 | |
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240 if (Vdrawnow_requested && (interactive || forced_interactive)) |
| 6257 | 241 { |
| 242 feval ("drawnow"); | |
| 243 | |
| 6367 | 244 flush_octave_stdout (); |
| 245 | |
| 6305 | 246 // We set Vdrawnow_requested to false even if there is an error |
| 247 // in drawnow so that the error doesn't reappear at every prompt. | |
| 248 | |
| 6257 | 249 Vdrawnow_requested = false; |
| 6305 | 250 |
| 251 if (error_state) | |
| 252 return "\n"; | |
| 6257 | 253 } |
| 254 | |
| 255 return gnu_readline (s, force_readline); | |
| 256 } | |
| 257 | |
| 3536 | 258 static std::string |
| 1 | 259 octave_gets (void) |
| 260 { | |
| 5142 | 261 OCTAVE_QUIT; |
| 262 | |
| 3523 | 263 std::string retval; |
| 1 | 264 |
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265 bool history_skip_auto_repeated_debugging_command = false; |
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266 |
| 1822 | 267 if ((interactive || forced_interactive) |
| 5832 | 268 && (! (reading_fcn_file |
| 9476 | 269 || reading_classdef_file |
| 5832 | 270 || reading_script_file |
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271 || get_input_from_eval_string |
| 5832 | 272 || input_from_startup_file |
| 273 || input_from_command_line_file))) | |
| 1 | 274 { |
| 5794 | 275 std::string ps = (promptflag > 0) ? VPS1 : VPS2; |
| 1755 | 276 |
| 3523 | 277 std::string prompt = command_editor::decode_prompt_string (ps); |
| 1 | 278 |
| 2618 | 279 pipe_handler_error_count = 0; |
| 280 | |
| 281 flush_octave_stdout (); | |
| 1 | 282 |
| 2095 | 283 octave_diary << prompt; |
| 581 | 284 |
| 6257 | 285 retval = interactive_input (prompt); |
| 5832 | 286 |
| 287 // There is no need to update the load_path cache if there is no | |
| 288 // user input. | |
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289 if (! retval.empty () |
| 8021 | 290 && retval.find_first_not_of (" \t\n\r") != std::string::npos) |
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291 { |
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292 load_path::update (); |
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293 |
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294 if (Vdebugging) |
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295 last_debugging_command = retval; |
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296 else |
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297 last_debugging_command = std::string (); |
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298 } |
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299 else if (Vdebugging) |
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300 { |
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301 retval = last_debugging_command; |
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302 history_skip_auto_repeated_debugging_command = true; |
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303 } |
| 1 | 304 } |
| 305 else | |
| 1822 | 306 retval = gnu_readline (""); |
| 1 | 307 |
| 2927 | 308 current_input_line = retval; |
| 1 | 309 |
| 1822 | 310 if (! current_input_line.empty ()) |
| 1 | 311 { |
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312 if (! (input_from_startup_file || input_from_command_line_file |
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313 || history_skip_auto_repeated_debugging_command)) |
| 2927 | 314 command_history::add (current_input_line); |
| 1 | 315 |
| 9476 | 316 if (! (reading_fcn_file || reading_script_file || reading_classdef_file)) |
| 3176 | 317 { |
| 318 octave_diary << current_input_line; | |
| 319 | |
| 320 if (current_input_line[current_input_line.length () - 1] != '\n') | |
| 321 octave_diary << "\n"; | |
| 322 } | |
| 581 | 323 |
| 1822 | 324 do_input_echo (current_input_line); |
| 1 | 325 } |
| 9476 | 326 else if (! (reading_fcn_file || reading_script_file || reading_classdef_file)) |
| 3176 | 327 octave_diary << "\n"; |
| 9476 | 328 |
| 1822 | 329 return retval; |
| 1 | 330 } |
| 331 | |
| 581 | 332 // Read a line from the input stream. |
| 333 | |
| 3536 | 334 static std::string |
| 1822 | 335 get_user_input (void) |
| 1 | 336 { |
| 5142 | 337 OCTAVE_QUIT; |
| 338 | |
| 3523 | 339 std::string retval; |
| 1 | 340 |
| 341 if (get_input_from_eval_string) | |
| 342 { | |
| 3877 | 343 if (input_from_eval_string_pending) |
| 344 { | |
| 345 input_from_eval_string_pending = false; | |
| 346 | |
| 347 retval = current_eval_string; | |
| 1822 | 348 |
| 3877 | 349 size_t len = retval.length (); |
| 1822 | 350 |
| 6206 | 351 if (len > 0 && retval[len-1] != '\n') |
| 3877 | 352 retval.append ("\n"); |
| 353 } | |
| 1822 | 354 } |
| 355 else | |
| 356 retval = octave_gets (); | |
| 357 | |
| 2927 | 358 current_input_line = retval; |
| 1822 | 359 |
| 360 return retval; | |
| 361 } | |
| 362 | |
| 363 int | |
| 364 octave_read (char *buf, unsigned max_size) | |
| 365 { | |
| 5775 | 366 // FIXME -- is this a safe way to buffer the input? |
| 2927 | 367 |
| 4046 | 368 static const char * const eol = "\n"; |
| 3523 | 369 static std::string input_buf; |
| 2927 | 370 static const char *pos = 0; |
| 371 static size_t chars_left = 0; | |
| 1822 | 372 |
| 373 int status = 0; | |
| 4046 | 374 if (chars_left == 0) |
| 1822 | 375 { |
| 2927 | 376 pos = 0; |
| 377 | |
| 378 input_buf = get_user_input (); | |
| 1822 | 379 |
| 2927 | 380 chars_left = input_buf.length (); |
| 381 | |
| 382 pos = input_buf.c_str (); | |
| 1822 | 383 } |
| 384 | |
| 385 if (chars_left > 0) | |
| 386 { | |
| 4046 | 387 size_t len = max_size > chars_left ? chars_left : max_size; |
| 2927 | 388 assert (len > 0); |
| 389 | |
| 4046 | 390 memcpy (buf, pos, len); |
| 1822 | 391 |
| 4046 | 392 chars_left -= len; |
| 393 pos += len; | |
| 1822 | 394 |
| 4046 | 395 // Make sure input ends with a new line character. |
| 396 if (chars_left == 0 && buf[len-1] != '\n') | |
| 397 { | |
| 9476 | 398 if (len < max_size) |
| 4046 | 399 { |
| 400 // There is enough room to plug the newline character in | |
| 401 // the buffer. | |
| 402 buf[len++] = '\n'; | |
| 403 } | |
| 404 else | |
| 405 { | |
| 406 // There isn't enough room to plug the newline character | |
| 407 // in the buffer so make sure it is returned on the next | |
| 408 // octave_read call. | |
| 409 pos = eol; | |
| 410 chars_left = 1; | |
| 411 } | |
| 1 | 412 } |
| 1822 | 413 |
| 4046 | 414 status = len; |
| 1 | 415 |
| 1044 | 416 } |
| 1822 | 417 else if (chars_left == 0) |
| 2862 | 418 { |
| 419 status = 0; | |
| 420 } | |
| 9476 | 421 else |
| 1822 | 422 status = -1; |
| 1044 | 423 |
| 1 | 424 return status; |
| 425 } | |
| 426 | |
| 581 | 427 // Fix things up so that input can come from file `name', printing a |
| 428 // warning if the file doesn't exist. | |
| 429 | |
| 1 | 430 FILE * |
| 3523 | 431 get_input_from_file (const std::string& name, int warn) |
| 1 | 432 { |
| 529 | 433 FILE *instream = 0; |
| 1 | 434 |
| 1750 | 435 if (name.length () > 0) |
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436 instream = fopen (name.c_str (), "rb"); |
| 1 | 437 |
| 529 | 438 if (! instream && warn) |
| 1750 | 439 warning ("%s: no such file or directory", name.c_str ()); |
| 1 | 440 |
| 9476 | 441 if (reading_fcn_file || reading_script_file || reading_classdef_file) |
| 339 | 442 ff_instream = instream; |
| 1 | 443 else |
| 2927 | 444 command_editor::set_input_stream (instream); |
| 1 | 445 |
| 446 return instream; | |
| 447 } | |
| 448 | |
| 581 | 449 // Fix things up so that input can come from the standard input. This |
| 450 // may need to become much more complicated, which is why it's in a | |
| 451 // separate function. | |
| 452 | |
| 1 | 453 FILE * |
| 454 get_input_from_stdin (void) | |
| 455 { | |
| 2927 | 456 command_editor::set_input_stream (stdin); |
| 457 return command_editor::get_input_stream (); | |
| 1 | 458 } |
| 459 | |
| 5775 | 460 // FIXME -- make this generate file names when appropriate. |
| 2921 | 461 |
| 2247 | 462 static string_vector |
| 3523 | 463 generate_possible_completions (const std::string& text, std::string& prefix, |
| 464 std::string& hint) | |
| 1280 | 465 { |
| 2247 | 466 string_vector names; |
| 1280 | 467 |
| 2921 | 468 prefix = ""; |
| 1280 | 469 |
| 4604 | 470 if (looks_like_struct (text)) |
| 1430 | 471 names = generate_struct_completions (text, prefix, hint); |
| 472 else | |
| 2247 | 473 names = make_name_list (); |
| 1280 | 474 |
| 2944 | 475 // Sort and remove duplicates. |
| 2348 | 476 |
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477 names.sort (true); |
| 2348 | 478 |
| 1280 | 479 return names; |
| 480 } | |
| 481 | |
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482 static bool |
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483 is_completing_dirfns (void) |
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484 { |
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485 static std::string dirfns_commands[] = {"cd", "ls"}; |
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486 static const size_t dirfns_commands_length = 2; |
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487 |
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488 bool retval = false; |
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489 |
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490 std::string line = command_editor::get_line_buffer (); |
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491 |
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492 for (size_t i = 0; i < dirfns_commands_length; i++) |
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493 { |
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494 int index = line.find (dirfns_commands[i] + " "); |
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495 |
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496 if (index == 0) |
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497 { |
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498 retval = true; |
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499 break; |
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500 } |
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501 } |
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502 |
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503 return retval; |
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504 } |
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505 |
| 3536 | 506 static std::string |
| 3523 | 507 generate_completion (const std::string& text, int state) |
| 1280 | 508 { |
| 3523 | 509 std::string retval; |
| 2944 | 510 |
| 3523 | 511 static std::string prefix; |
| 512 static std::string hint; | |
| 1280 | 513 |
| 2921 | 514 static size_t hint_len = 0; |
| 1280 | 515 |
| 1 | 516 static int list_index = 0; |
| 2921 | 517 static int name_list_len = 0; |
| 4604 | 518 static int name_list_total_len = 0; |
| 2247 | 519 static string_vector name_list; |
| 4604 | 520 static string_vector file_name_list; |
| 1 | 521 |
| 1280 | 522 static int matches = 0; |
| 1 | 523 |
| 524 if (state == 0) | |
| 525 { | |
| 526 list_index = 0; | |
| 527 | |
| 2921 | 528 prefix = ""; |
| 1280 | 529 |
| 2921 | 530 hint = text; |
| 1280 | 531 |
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532 // No reason to display symbols while completing a |
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533 // file/directory operation. |
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534 |
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535 if (is_completing_dirfns ()) |
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536 name_list = string_vector (); |
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537 else |
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538 name_list = generate_possible_completions (text, prefix, hint); |
| 1280 | 539 |
| 2921 | 540 name_list_len = name_list.length (); |
| 541 | |
| 4604 | 542 file_name_list = command_editor::generate_filename_completions (text); |
| 543 | |
| 544 name_list.append (file_name_list); | |
| 545 | |
| 546 name_list_total_len = name_list.length (); | |
| 547 | |
| 2921 | 548 hint_len = hint.length (); |
| 1280 | 549 |
| 550 matches = 0; | |
| 2247 | 551 |
| 2921 | 552 for (int i = 0; i < name_list_len; i++) |
| 3565 | 553 if (hint == name_list[i].substr (0, hint_len)) |
| 2247 | 554 matches++; |
| 1 | 555 } |
| 556 | |
| 4604 | 557 if (name_list_total_len > 0 && matches > 0) |
| 1 | 558 { |
| 4604 | 559 while (list_index < name_list_total_len) |
| 244 | 560 { |
| 3523 | 561 std::string name = name_list[list_index]; |
| 2247 | 562 |
| 1280 | 563 list_index++; |
| 2247 | 564 |
| 3565 | 565 if (hint == name.substr (0, hint_len)) |
| 1280 | 566 { |
| 4604 | 567 if (list_index <= name_list_len && ! prefix.empty ()) |
| 2944 | 568 retval = prefix + "." + name; |
| 569 else | |
| 570 retval = name; | |
| 1280 | 571 |
| 5775 | 572 // FIXME -- looks_like_struct is broken for now, |
| 4179 | 573 // so it always returns false. |
| 574 | |
| 6979 | 575 if (matches == 1 && looks_like_struct (retval)) |
| 4179 | 576 { |
| 577 // Don't append anything, since we don't know | |
| 578 // whether it should be '(' or '.'. | |
| 579 | |
| 580 command_editor::set_completion_append_character ('\0'); | |
| 581 } | |
| 582 else | |
| 583 command_editor::set_completion_append_character | |
| 584 (Vcompletion_append_char); | |
| 1280 | 585 |
| 2944 | 586 break; |
| 1280 | 587 } |
| 244 | 588 } |
| 1 | 589 } |
| 590 | |
| 2944 | 591 return retval; |
| 1 | 592 } |
| 593 | |
| 6979 | 594 static std::string |
| 595 quoting_filename (const std::string &text, int, char quote) | |
| 596 { | |
| 597 if (quote) | |
| 598 return text; | |
| 599 else | |
| 600 return (std::string ("'") + text); | |
| 601 } | |
| 602 | |
| 2927 | 603 void |
| 604 initialize_command_input (void) | |
| 605 { | |
| 606 // If we are using readline, this allows conditional parsing of the | |
| 607 // .inputrc file. | |
| 269 | 608 |
| 2927 | 609 command_editor::set_name ("Octave"); |
| 1358 | 610 |
| 5775 | 611 // FIXME -- this needs to include a comma too, but that |
| 3933 | 612 // causes trouble for the new struct element completion code. |
| 613 | |
| 4272 | 614 static const char *s = "\t\n !\"\'*+-/:;<=>(){}[\\]^`~"; |
| 3933 | 615 |
| 616 command_editor::set_basic_word_break_characters (s); | |
| 617 | |
| 618 command_editor::set_completer_word_break_characters (s); | |
| 619 | |
| 3004 | 620 command_editor::set_basic_quote_characters ("\""); |
| 2944 | 621 |
| 6979 | 622 command_editor::set_filename_quote_characters (" \t\n\\\"'@<>=;|&()#$`?*[!:{"); |
| 623 command_editor::set_completer_quote_characters ("'\""); | |
| 624 | |
| 2944 | 625 command_editor::set_completion_function (generate_completion); |
| 6979 | 626 |
| 627 command_editor::set_quoting_function (quoting_filename); | |
| 269 | 628 } |
| 629 | |
|
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630 static void |
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631 get_debug_input (const std::string& prompt) |
| 269 | 632 { |
|
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633 octave_user_code *caller = octave_call_stack::caller_user_code (); |
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634 std::string nm; |
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635 |
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636 int curr_debug_line = octave_call_stack::current_line (); |
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637 |
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638 bool have_file = false; |
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639 |
|
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640 if (caller) |
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641 { |
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642 nm = caller->fcn_file_name (); |
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643 |
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644 if (nm.empty ()) |
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645 nm = caller->name (); |
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646 else |
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647 have_file = true; |
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648 } |
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649 else |
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650 curr_debug_line = -1; |
| 3180 | 651 |
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652 std::ostringstream buf; |
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653 |
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654 if (! nm.empty ()) |
| 3180 | 655 { |
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656 if (Vgud_mode) |
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657 { |
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658 static char ctrl_z = 'Z' & 0x1f; |
| 269 | 659 |
|
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660 buf << ctrl_z << ctrl_z << nm << ":" << curr_debug_line; |
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661 } |
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662 else |
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663 { |
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664 // FIXME -- we should come up with a clean way to detect |
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665 // that we are stopped on the no-op command that marks the |
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666 // end of a function or script. |
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667 |
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668 buf << "stopped in " << nm; |
| 1 | 669 |
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670 if (curr_debug_line > 0) |
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671 buf << " at line " << curr_debug_line; |
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672 |
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673 if (have_file) |
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674 { |
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675 std::string line_buf |
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676 = get_file_line (nm, curr_debug_line); |
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677 |
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678 if (! line_buf.empty ()) |
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679 buf << "\n" << curr_debug_line << ": " << line_buf; |
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680 } |
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681 } |
| 3180 | 682 } |
| 683 | |
|
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684 std::string msg = buf.str (); |
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685 |
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686 if (! msg.empty ()) |
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|
687 std::cerr << msg << std::endl; |
|
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688 |
|
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|
689 unwind_protect frame; |
|
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|
690 |
|
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|
691 frame.protect_var (VPS1); |
|
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|
692 VPS1 = prompt; |
|
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|
693 |
|
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|
694 if (stdin_is_tty) |
|
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695 { |
|
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696 if (! (interactive || forced_interactive) |
|
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697 || (reading_fcn_file |
|
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698 || reading_classdef_file |
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699 || reading_script_file |
|
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700 || get_input_from_eval_string |
|
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701 || input_from_startup_file |
|
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702 || input_from_command_line_file)) |
|
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|
703 { |
|
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|
704 frame.protect_var (forced_interactive); |
|
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|
705 forced_interactive = true; |
|
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|
706 |
|
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|
707 frame.protect_var (reading_fcn_file); |
|
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708 reading_fcn_file = false; |
|
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Add dbquit and make dbstep compatible. Use parser in debug mode to handle multi-line input
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|
709 |
|
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|
710 frame.protect_var (reading_classdef_file); |
|
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|
711 reading_classdef_file = false; |
|
7903
8018e10d2b87
save and restore global_command as needed
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|
712 |
|
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|
713 frame.protect_var (reading_script_file); |
|
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|
714 reading_script_file = false; |
|
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715 |
|
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|
716 frame.protect_var (input_from_startup_file); |
|
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|
717 input_from_startup_file = false; |
|
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718 |
|
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|
719 frame.protect_var (input_from_command_line_file); |
|
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|
720 input_from_command_line_file = false; |
|
9260
9c2349a51218
properly unmark forced variables
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diff
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|
721 |
|
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|
722 frame.protect_var (get_input_from_eval_string); |
|
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|
723 get_input_from_eval_string = false; |
|
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|
724 |
|
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|
725 YY_BUFFER_STATE old_buf = current_buffer (); |
|
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726 YY_BUFFER_STATE new_buf = create_buffer (get_input_from_stdin ()); |
|
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|
727 |
|
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|
728 // FIXME: are these safe? |
|
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|
729 frame.add_fcn (switch_to_buffer, old_buf); |
|
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|
730 frame.add_fcn (delete_buffer, new_buf); |
|
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|
731 |
|
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732 switch_to_buffer (new_buf); |
|
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|
733 } |
|
7913
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|
734 |
|
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|
735 while (Vdebugging) |
|
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|
736 { |
|
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737 reset_error_handler (); |
|
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738 |
|
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|
739 reset_parser (); |
|
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|
740 |
|
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|
741 // Save current value of global_command. |
|
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|
742 frame.protect_var (global_command); |
|
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|
743 |
|
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744 // Do this with an unwind-protect cleanup function so that the |
|
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745 // forced variables will be unmarked in the event of an interrupt. |
|
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|
746 symbol_table::scope_id scope = symbol_table::top_scope (); |
|
10066
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make unwind_protect frames local
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diff
changeset
|
747 frame.add_fcn (symbol_table::unmark_forced_variables, scope); |
|
9999
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|
748 |
|
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|
749 // This is the same as yyparse in parse.y. |
|
653716f3d976
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|
750 int retval = octave_parse (); |
|
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|
751 |
|
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|
752 if (retval == 0 && global_command) |
|
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|
753 { |
|
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|
754 global_command->accept (*current_evaluator); |
|
7913
f46e73bcb85b
toplev.cc (main_loop): undo previous change; input.cc (get_debug_input): don't delete global_command here
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7903
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changeset
|
755 |
|
9999
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|
756 // FIXME -- To avoid a memory leak, global_command should be |
|
653716f3d976
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757 // deleted, I think. But doing that here causes trouble if |
|
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|
758 // an error occurs while executing a debugging command |
|
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|
759 // (dbstep, for example). It's not clear to me why that |
|
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|
760 // happens. |
|
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|
761 // |
|
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|
762 // delete global_command; |
|
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|
763 // |
|
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|
764 // global_command = 0; |
|
7903
8018e10d2b87
save and restore global_command as needed
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changeset
|
765 |
|
9999
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|
766 if (octave_completion_matches_called) |
|
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|
767 octave_completion_matches_called = false; |
|
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|
768 } |
|
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|
769 |
|
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|
770 // Unmark forced variables. |
|
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|
771 // Restore previous value of global_command. |
|
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|
772 frame.run_top (2); |
|
7787
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changeset
|
773 |
|
9999
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|
774 OCTAVE_QUIT; |
|
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|
775 } |
|
7787
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|
776 } |
|
9999
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|
777 else |
|
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|
778 warning ("invalid attempt to debug script read from stdin"); |
| 529 | 779 } |
| 780 | |
| 581 | 781 // If the user simply hits return, this will produce an empty matrix. |
| 782 | |
| 2086 | 783 static octave_value_list |
|
7752
40c428ea3408
initial implementation of dbup and dbdown
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7734
diff
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|
784 get_user_input (const octave_value_list& args, int nargout) |
| 529 | 785 { |
| 3100 | 786 octave_value_list retval; |
| 529 | 787 |
| 788 int nargin = args.length (); | |
| 789 | |
| 790 int read_as_string = 0; | |
| 791 | |
| 712 | 792 if (nargin == 2) |
| 529 | 793 read_as_string++; |
| 794 | |
|
7787
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|
795 std::string prompt = args(0).string_value (); |
| 4975 | 796 |
|
7787
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Add dbquit and make dbstep compatible. Use parser in debug mode to handle multi-line input
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|
797 if (error_state) |
|
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|
798 { |
|
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|
799 error ("input: unrecognized argument"); |
|
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|
800 return retval; |
| 4975 | 801 } |
| 802 | |
| 2095 | 803 flush_octave_stdout (); |
| 529 | 804 |
| 4565 | 805 octave_diary << prompt; |
| 806 | |
|
7459
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807 std::string input_buf = interactive_input (prompt.c_str (), true); |
| 529 | 808 |
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809 if (! (error_state || input_buf.empty ())) |
| 529 | 810 { |
| 1799 | 811 if (! input_from_startup_file) |
| 2927 | 812 command_history::add (input_buf); |
| 529 | 813 |
| 2927 | 814 size_t len = input_buf.length (); |
| 529 | 815 |
| 4565 | 816 octave_diary << input_buf; |
| 817 | |
| 818 if (input_buf[len - 1] != '\n') | |
| 819 octave_diary << "\n"; | |
| 820 | |
| 529 | 821 if (len < 1) |
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822 return read_as_string ? octave_value ("") : octave_value (Matrix ()); |
| 3772 | 823 |
| 824 if (read_as_string) | |
| 963 | 825 { |
| 5775 | 826 // FIXME -- fix gnu_readline and octave_gets instead! |
| 3081 | 827 if (input_buf.length () == 1 && input_buf[0] == '\n') |
| 3100 | 828 retval(0) = ""; |
| 3081 | 829 else |
| 3100 | 830 retval(0) = input_buf; |
| 963 | 831 } |
| 529 | 832 else |
| 833 { | |
| 834 int parse_status = 0; | |
| 2900 | 835 |
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836 retval = eval_string (input_buf, true, parse_status, nargout); |
| 3100 | 837 |
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838 if (! Vdebugging && retval.length () == 0) |
| 3100 | 839 retval(0) = Matrix (); |
| 529 | 840 } |
| 841 } | |
| 842 else | |
| 843 error ("input: reading user-input failed!"); | |
| 844 | |
| 845 return retval; | |
| 846 } | |
| 847 | |
| 3100 | 848 DEFUN (input, args, nargout, |
| 3372 | 849 "-*- texinfo -*-\n\ |
| 850 @deftypefn {Built-in Function} {} input (@var{prompt})\n\ | |
| 851 @deftypefnx {Built-in Function} {} input (@var{prompt}, \"s\")\n\ | |
| 852 Print a prompt and wait for user input. For example,\n\ | |
| 853 \n\ | |
| 854 @example\n\ | |
| 855 input (\"Pick a number, any number! \")\n\ | |
| 856 @end example\n\ | |
| 857 \n\ | |
| 858 @noindent\n\ | |
| 859 prints the prompt\n\ | |
| 860 \n\ | |
| 861 @example\n\ | |
| 862 Pick a number, any number!\n\ | |
| 863 @end example\n\ | |
| 529 | 864 \n\ |
| 3372 | 865 @noindent\n\ |
| 866 and waits for the user to enter a value. The string entered by the user\n\ | |
| 867 is evaluated as an expression, so it may be a literal constant, a\n\ | |
| 868 variable name, or any other valid expression.\n\ | |
| 869 \n\ | |
| 870 Currently, @code{input} only returns one value, regardless of the number\n\ | |
| 871 of values produced by the evaluation of the expression.\n\ | |
| 872 \n\ | |
| 873 If you are only interested in getting a literal string value, you can\n\ | |
| 874 call @code{input} with the character string @code{\"s\"} as the second\n\ | |
| 875 argument. This tells Octave to return the string entered by the user\n\ | |
| 876 directly, without evaluating it first.\n\ | |
| 877 \n\ | |
| 878 Because there may be output waiting to be displayed by the pager, it is\n\ | |
| 879 a good idea to always call @code{fflush (stdout)} before calling\n\ | |
| 880 @code{input}. This will ensure that all pending output is written to\n\ | |
| 881 the screen before your prompt. @xref{Input and Output}.\n\ | |
| 882 @end deftypefn") | |
| 529 | 883 { |
| 2086 | 884 octave_value_list retval; |
| 529 | 885 |
| 886 int nargin = args.length (); | |
| 887 | |
| 712 | 888 if (nargin == 1 || nargin == 2) |
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889 retval = get_user_input (args, nargout); |
| 529 | 890 else |
| 5823 | 891 print_usage (); |
| 529 | 892 |
| 893 return retval; | |
| 894 } | |
| 895 | |
| 5640 | 896 bool |
| 897 octave_yes_or_no (const std::string& prompt) | |
| 898 { | |
| 899 std::string prompt_string = prompt + "(yes or no) "; | |
| 900 | |
| 901 while (1) | |
| 902 { | |
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903 std::string input_buf = interactive_input (prompt_string, true); |
| 5640 | 904 |
| 905 if (input_buf == "yes") | |
| 906 return true; | |
| 907 else if (input_buf == "no") | |
| 908 return false; | |
| 909 else | |
| 910 message (0, "Please answer yes or no."); | |
| 911 } | |
| 912 } | |
| 913 | |
| 914 DEFUN (yes_or_no, args, , | |
| 915 "-*- texinfo -*-\n\ | |
| 916 @deftypefn {Built-in Function} {} yes_or_no (@var{prompt})\n\ | |
| 917 Ask the user a yes-or-no question. Return 1 if the answer is yes.\n\ | |
| 918 Takes one argument, which is the string to display to ask the\n\ | |
| 919 question. It should end in a space; @samp{yes-or-no-p} adds\n\ | |
| 920 @samp{(yes or no) } to it. The user must confirm the answer with\n\ | |
| 921 RET and can edit it until it has been confirmed.\n\ | |
| 922 @end deftypefn") | |
| 923 { | |
| 924 octave_value retval; | |
| 925 | |
| 926 int nargin = args.length (); | |
| 927 | |
| 928 if (nargin == 0 || nargin == 1) | |
| 929 { | |
| 930 std::string prompt; | |
| 931 | |
| 932 if (nargin == 1) | |
| 933 { | |
| 934 prompt = args(0).string_value (); | |
| 935 | |
| 936 if (error_state) | |
| 937 { | |
| 938 error ("yes_or_no: expecting argument to be character string"); | |
| 939 return retval; | |
| 940 } | |
| 941 } | |
| 942 | |
| 943 retval = octave_yes_or_no (prompt); | |
| 944 } | |
| 945 else | |
| 5823 | 946 print_usage (); |
| 5640 | 947 |
| 948 return retval; | |
| 949 } | |
| 950 | |
| 3707 | 951 octave_value |
| 952 do_keyboard (const octave_value_list& args) | |
| 953 { | |
| 954 octave_value retval; | |
| 955 | |
| 956 int nargin = args.length (); | |
| 957 | |
| 958 assert (nargin == 0 || nargin == 1); | |
| 959 | |
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960 unwind_protect frame; |
| 3707 | 961 |
| 5775 | 962 // FIXME -- we shouldn't need both the |
| 3707 | 963 // command_history object and the |
| 964 // Vsaving_history variable... | |
| 965 command_history::ignore_entries (false); | |
| 966 | |
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967 frame.add_fcn (command_history::ignore_entries, ! Vsaving_history); |
| 3707 | 968 |
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969 frame.protect_var (Vsaving_history); |
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970 frame.protect_var (Vdebugging); |
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971 |
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972 frame.add_fcn (octave_call_stack::restore_frame, |
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973 octave_call_stack::current_frame ()); |
| 3707 | 974 |
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975 // FIXME -- probably we just want to print one line, not the |
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976 // entire statement, which might span many lines... |
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977 // |
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978 // tree_print_code tpc (octave_stdout); |
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979 // stmt.accept (tpc); |
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980 |
| 3707 | 981 Vsaving_history = true; |
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982 Vdebugging = true; |
| 3707 | 983 |
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984 std::string prompt = "debug> "; |
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985 if (nargin > 0) |
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986 prompt = args(0).string_value (); |
| 4233 | 987 |
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988 if (! error_state) |
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989 get_debug_input (prompt); |
| 3707 | 990 |
| 991 return retval; | |
| 992 } | |
| 993 | |
| 1957 | 994 DEFUN (keyboard, args, , |
| 3372 | 995 "-*- texinfo -*-\n\ |
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996 @deftypefn {Built-in Function} {} keyboard ()\n\ |
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997 @deftypefnx {Built-in Function} {} keyboard (@var{prompt})\n\ |
| 3372 | 998 This function is normally used for simple debugging. When the\n\ |
| 999 @code{keyboard} function is executed, Octave prints a prompt and waits\n\ | |
| 1000 for user input. The input strings are then evaluated and the results\n\ | |
| 1001 are printed. This makes it possible to examine the values of variables\n\ | |
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1002 within a function, and to assign new values if necessary. To leave the\n\ |
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1003 prompt and return to normal execution type @samp{return} or @samp{dbcont}.\n\ |
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1004 The @code{keyboard} function does not return an exit status.\n\ |
| 529 | 1005 \n\ |
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1006 If @code{keyboard} is invoked without arguments, a default prompt of\n\ |
| 3372 | 1007 @samp{debug> } is used.\n\ |
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1008 @seealso{dbcont, dbquit}\n\ |
| 3372 | 1009 @end deftypefn") |
| 529 | 1010 { |
| 2086 | 1011 octave_value_list retval; |
| 529 | 1012 |
| 1013 int nargin = args.length (); | |
| 1014 | |
| 712 | 1015 if (nargin == 0 || nargin == 1) |
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1016 { |
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1017 unwind_protect frame; |
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1018 frame.add_fcn (octave_call_stack::restore_frame, |
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1019 octave_call_stack::current_frame ()); |
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1020 |
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1021 // Skip the frame assigned to the keyboard function. |
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1022 octave_call_stack::goto_frame_relative (0); |
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1023 |
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1024 do_keyboard (args); |
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1025 } |
| 529 | 1026 else |
| 5823 | 1027 print_usage (); |
| 529 | 1028 |
| 1029 return retval; | |
| 1030 } | |
| 1031 | |
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1032 DEFUN (echo, args, , |
| 3332 | 1033 "-*- texinfo -*-\n\ |
| 1034 @deffn {Command} echo options\n\ | |
| 1035 Control whether commands are displayed as they are executed. Valid\n\ | |
| 1036 options are:\n\ | |
| 1588 | 1037 \n\ |
| 3332 | 1038 @table @code\n\ |
| 1039 @item on\n\ | |
| 1040 Enable echoing of commands as they are executed in script files.\n\ | |
| 1041 \n\ | |
| 1042 @item off\n\ | |
| 1043 Disable echoing of commands as they are executed in script files.\n\ | |
| 1588 | 1044 \n\ |
| 3332 | 1045 @item on all\n\ |
| 1046 Enable echoing of commands as they are executed in script files and\n\ | |
| 1047 functions.\n\ | |
| 1588 | 1048 \n\ |
| 3332 | 1049 @item off all\n\ |
| 1050 Disable echoing of commands as they are executed in script files and\n\ | |
| 1051 functions.\n\ | |
| 1052 @end table\n\ | |
| 1053 \n\ | |
| 1054 @noindent\n\ | |
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1055 With no arguments, @code{echo} toggles the current echo state.\n\ |
| 3333 | 1056 @end deffn") |
| 1588 | 1057 { |
| 2086 | 1058 octave_value_list retval; |
| 1588 | 1059 |
| 1755 | 1060 int argc = args.length () + 1; |
| 1061 | |
| 1968 | 1062 string_vector argv = args.make_argv ("echo"); |
| 1755 | 1063 |
| 1064 if (error_state) | |
| 1065 return retval; | |
| 1588 | 1066 |
| 1067 switch (argc) | |
| 1068 { | |
| 1069 case 1: | |
| 1070 { | |
| 2205 | 1071 if ((Vecho_executing_commands & ECHO_SCRIPTS) |
| 1072 || (Vecho_executing_commands & ECHO_FUNCTIONS)) | |
| 5794 | 1073 Vecho_executing_commands = ECHO_OFF; |
| 1588 | 1074 else |
| 5794 | 1075 Vecho_executing_commands = ECHO_SCRIPTS; |
| 1588 | 1076 } |
| 1077 break; | |
| 1078 | |
| 1079 case 2: | |
| 1080 { | |
| 3523 | 1081 std::string arg = argv[1]; |
| 1755 | 1082 |
| 1083 if (arg == "on") | |
| 5794 | 1084 Vecho_executing_commands = ECHO_SCRIPTS; |
| 1755 | 1085 else if (arg == "off") |
| 5794 | 1086 Vecho_executing_commands = ECHO_OFF; |
| 1588 | 1087 else |
| 5823 | 1088 print_usage (); |
| 1588 | 1089 } |
| 1090 break; | |
| 1091 | |
| 1092 case 3: | |
| 1093 { | |
| 3523 | 1094 std::string arg = argv[1]; |
| 1755 | 1095 |
| 1096 if (arg == "on" && argv[2] == "all") | |
| 2800 | 1097 { |
| 1098 int tmp = (ECHO_SCRIPTS | ECHO_FUNCTIONS); | |
| 5794 | 1099 Vecho_executing_commands = tmp; |
| 2800 | 1100 } |
| 1755 | 1101 else if (arg == "off" && argv[2] == "all") |
| 5794 | 1102 Vecho_executing_commands = ECHO_OFF; |
| 1588 | 1103 else |
| 5823 | 1104 print_usage (); |
| 1588 | 1105 } |
| 1106 break; | |
| 1107 | |
| 1108 default: | |
| 5823 | 1109 print_usage (); |
| 1588 | 1110 break; |
| 1111 } | |
| 1112 | |
| 1113 return retval; | |
| 1114 } | |
| 1115 | |
| 2234 | 1116 DEFUN (completion_matches, args, nargout, |
| 3332 | 1117 "-*- texinfo -*-\n\ |
| 1118 @deftypefn {Built-in Function} {} completion_matches (@var{hint})\n\ | |
| 1119 Generate possible completions given @var{hint}.\n\ | |
| 2299 | 1120 \n\ |
| 1121 This function is provided for the benefit of programs like Emacs which\n\ | |
| 3332 | 1122 might be controlling Octave and handling user input. The current\n\ |
| 1123 command number is not incremented when this function is called. This is\n\ | |
| 1124 a feature, not a bug.\n\ | |
| 3333 | 1125 @end deftypefn") |
| 2234 | 1126 { |
| 2281 | 1127 octave_value retval; |
| 2234 | 1128 |
| 1129 int nargin = args.length (); | |
| 1130 | |
| 1131 if (nargin == 1) | |
| 1132 { | |
| 3523 | 1133 std::string hint = args(0).string_value (); |
| 2234 | 1134 |
| 1135 if (! error_state) | |
| 1136 { | |
| 1137 int n = 32; | |
| 1138 | |
| 1139 string_vector list (n); | |
| 1140 | |
| 1141 int k = 0; | |
| 1142 | |
| 1143 for (;;) | |
| 1144 { | |
| 3523 | 1145 std::string cmd = generate_completion (hint, k); |
| 2234 | 1146 |
| 2944 | 1147 if (! cmd.empty ()) |
| 2234 | 1148 { |
| 2944 | 1149 if (k == n) |
| 2234 | 1150 { |
| 2944 | 1151 n *= 2; |
| 1152 list.resize (n); | |
| 1153 } | |
| 2235 | 1154 |
| 2944 | 1155 list[k++] = cmd; |
| 2234 | 1156 } |
| 1157 else | |
| 1158 { | |
| 1159 list.resize (k); | |
| 1160 break; | |
| 1161 } | |
| 1162 } | |
| 1163 | |
| 1164 if (nargout > 0) | |
| 2281 | 1165 { |
| 1166 if (! list.empty ()) | |
| 1167 retval = list; | |
| 2282 | 1168 else |
| 1169 retval = ""; | |
| 2281 | 1170 } |
| 2234 | 1171 else |
| 1172 { | |
| 2235 | 1173 // We don't use string_vector::list_in_columns here |
| 1174 // because it will be easier for Emacs if the names | |
| 1175 // appear in a single column. | |
| 1176 | |
| 2234 | 1177 int len = list.length (); |
| 1178 | |
| 1179 for (int i = 0; i < len; i++) | |
| 1180 octave_stdout << list[i] << "\n"; | |
| 1181 } | |
| 2299 | 1182 |
| 1183 octave_completion_matches_called = true; | |
| 2234 | 1184 } |
| 1185 } | |
| 1186 else | |
| 5823 | 1187 print_usage (); |
| 2234 | 1188 |
| 1189 return retval; | |
| 1190 } | |
| 1191 | |
| 3189 | 1192 DEFUN (read_readline_init_file, args, , |
| 3448 | 1193 "-*- texinfo -*-\n\ |
| 1194 @deftypefn {Built-in Function} {} read_readline_init_file (@var{file})\n\ | |
| 7007 | 1195 Read the readline library initialization file @var{file}. If\n\ |
| 3448 | 1196 @var{file} is omitted, read the default initialization file (normally\n\ |
| 6615 | 1197 @file{~/.inputrc}).\n\ |
| 1198 \n\ | |
| 1199 @xref{Readline Init File, , , readline, GNU Readline Library},\n\ | |
| 1200 for details.\n\ | |
| 3448 | 1201 @end deftypefn") |
| 3189 | 1202 { |
| 1203 octave_value_list retval; | |
| 1204 | |
| 1205 int nargin = args.length (); | |
| 1206 | |
| 1207 if (nargin == 0) | |
| 1208 command_editor::read_init_file (); | |
| 1209 else if (nargin == 1) | |
| 1210 { | |
| 5872 | 1211 std::string file = args(0).string_value (); |
| 3189 | 1212 |
| 1213 if (! error_state) | |
| 1214 command_editor::read_init_file (file); | |
| 1215 } | |
| 1216 else | |
| 5823 | 1217 print_usage (); |
| 3189 | 1218 |
| 1219 return retval; | |
| 1220 } | |
| 1221 | |
|
7758
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1222 DEFUN (re_read_readline_init_file, args, , |
|
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1223 "-*- texinfo -*-\n\ |
|
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1224 @deftypefn {Built-in Function} {} re_read_readline_init_file ()\n\ |
|
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1225 Re-read the last readline library initialization file that was read.\n\ |
|
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1226 @xref{Readline Init File, , , readline, GNU Readline Library},\n\ |
|
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1227 for details.\n\ |
|
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1228 @end deftypefn") |
|
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1229 { |
|
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1230 octave_value_list retval; |
|
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1231 |
|
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1232 if (args.length () == 0) |
|
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|
1233 command_editor::re_read_init_file (); |
|
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1234 else |
|
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1235 print_usage (); |
|
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1236 |
|
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1237 return retval; |
|
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1238 } |
|
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1239 |
|
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1240 typedef std::map<std::string, octave_value> hook_fcn_map_type; |
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1241 |
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1242 static hook_fcn_map_type hook_fcn_map; |
| 3498 | 1243 |
| 4802 | 1244 static int |
| 3519 | 1245 input_event_hook (void) |
| 3498 | 1246 { |
|
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1247 hook_fcn_map_type::iterator p = hook_fcn_map.begin (); |
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1248 |
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1249 while (p != hook_fcn_map.end ()) |
| 4526 | 1250 { |
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1251 std::string hook_fcn = p->first; |
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1252 octave_value user_data = p->second; |
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1253 |
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1254 p++; |
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1255 |
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1256 if (is_valid_function (hook_fcn)) |
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1257 { |
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1258 if (user_data.is_defined ()) |
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1259 feval (hook_fcn, user_data, 0); |
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1260 else |
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1261 feval (hook_fcn, octave_value_list (), 0); |
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1262 } |
| 4526 | 1263 else |
|
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1264 hook_fcn_map.erase (p); |
| 4526 | 1265 } |
| 1266 | |
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1267 if (hook_fcn_map.empty ()) |
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1268 command_editor::remove_event_hook (input_event_hook); |
| 4802 | 1269 |
| 1270 return 0; | |
| 3498 | 1271 } |
| 1272 | |
|
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1273 DEFUN (add_input_event_hook, args, , |
| 3498 | 1274 "-*- texinfo -*-\n\ |
|
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1275 @deftypefn {Built-in Function} {} add_input_event_hook (@var{fcn}, @var{data})\n\ |
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1276 Add the named function @var{fcn} to the list of functions to call\n\ |
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1277 periodically when Octave is waiting for input. The function should\n\ |
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1278 have the form\n\ |
| 3498 | 1279 @example\n\ |
| 1280 @var{fcn} (@var{data})\n\ | |
| 1281 @end example\n\ | |
| 1282 \n\ | |
| 1283 If @var{data} is omitted, Octave calls the function without any\n\ | |
|
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1284 arguments.\n\ |
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1285 @seealso{remove_input_event_hook}\n\ |
| 3498 | 1286 @end deftypefn") |
| 1287 { | |
| 1288 octave_value_list retval; | |
| 1289 | |
| 1290 int nargin = args.length (); | |
| 1291 | |
|
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1292 if (nargin == 1 || nargin == 2) |
| 3498 | 1293 { |
|
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1294 octave_value user_data; |
|
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1295 |
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1296 if (nargin == 2) |
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1297 user_data = args(1); |
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1298 |
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1299 std::string hook_fcn = args(0).string_value (); |
| 3498 | 1300 |
|
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1301 if (! error_state) |
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1302 { |
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1303 if (hook_fcn_map.empty ()) |
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1304 command_editor::add_event_hook (input_event_hook); |
| 3498 | 1305 |
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1306 hook_fcn_map[hook_fcn] = user_data; |
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1307 } |
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1308 else |
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1309 error ("add_input_event_hook: expecting string as first arg"); |
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1310 } |
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1311 else |
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1312 print_usage (); |
| 3498 | 1313 |
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1314 return retval; |
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1315 } |
| 3498 | 1316 |
|
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1317 DEFUN (remove_input_event_hook, args, , |
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1318 "-*- texinfo -*-\n\ |
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1319 @deftypefn {Built-in Function} {} remove_input_event_hook (@var{fcn})\n\ |
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1320 Remove the named function @var{fcn} to the list of functions to call\n\ |
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1321 periodically when Octave is waiting for input.\n\ |
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1322 @seealso{add_input_event_hook}\n\ |
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1323 @end deftypefn") |
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1324 { |
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1325 octave_value_list retval; |
| 3498 | 1326 |
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1327 int nargin = args.length (); |
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1328 |
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1329 if (nargin == 1) |
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1330 { |
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1331 std::string hook_fcn = args(0).string_value (); |
| 3498 | 1332 |
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1333 if (! error_state) |
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1334 { |
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1335 hook_fcn_map_type::iterator p = hook_fcn_map.find (hook_fcn); |
| 3498 | 1336 |
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1337 if (p != hook_fcn_map.end ()) |
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1338 hook_fcn_map.erase (p); |
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1339 else |
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1340 error ("remove_input_event_hook: %s not found in list", |
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1341 hook_fcn.c_str ()); |
| 3498 | 1342 |
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1343 if (hook_fcn_map.empty ()) |
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1344 command_editor::remove_event_hook (input_event_hook); |
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1345 } |
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1346 else |
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1347 error ("remove_input_event_hook: expecting string as first arg"); |
| 3498 | 1348 } |
|
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1349 else |
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1350 print_usage (); |
| 3498 | 1351 |
| 1352 return retval; | |
| 1353 } | |
| 1354 | |
| 5794 | 1355 DEFUN (PS1, args, nargout, |
| 1356 "-*- texinfo -*-\n\ | |
| 1357 @deftypefn {Built-in Function} {@var{val} =} PS1 ()\n\ | |
| 1358 @deftypefnx {Built-in Function} {@var{old_val} =} PS1 (@var{new_val})\n\ | |
| 1359 Query or set the primary prompt string. When executing interactively,\n\ | |
| 1360 Octave displays the primary prompt when it is ready to read a command.\n\ | |
| 3332 | 1361 \n\ |
| 5794 | 1362 The default value of the primary prompt string is @code{\"\\s:\\#> \"}.\n\ |
| 1363 To change it, use a command like\n\ | |
| 3332 | 1364 \n\ |
| 1365 @example\n\ | |
| 7097 | 1366 octave:13> PS1 (\"\\\\u@@\\\\H> \")\n\ |
| 3332 | 1367 @end example\n\ |
| 1368 \n\ | |
| 1369 @noindent\n\ | |
| 1370 which will result in the prompt @samp{boris@@kremvax> } for the user\n\ | |
| 1371 @samp{boris} logged in on the host @samp{kremvax.kgb.su}. Note that two\n\ | |
| 5794 | 1372 backslashes are required to enter a backslash into a double-quoted\n\ |
| 1373 character string.\n\ | |
| 3332 | 1374 @xref{Strings}.\n\ |
| 6373 | 1375 @seealso{PS2, PS4}\n\ |
| 5794 | 1376 @end deftypefn") |
| 1377 { | |
| 1378 return SET_INTERNAL_VARIABLE (PS1); | |
| 1379 } | |
| 2181 | 1380 |
| 5794 | 1381 DEFUN (PS2, args, nargout, |
| 1382 "-*- texinfo -*-\n\ | |
| 1383 @deftypefn {Built-in Function} {@var{val} =} PS2 ()\n\ | |
| 1384 @deftypefnx {Built-in Function} {@var{old_val} =} PS2 (@var{new_val})\n\ | |
| 1385 Query or set the secondary prompt string. The secondary prompt is\n\ | |
| 1386 printed when Octave is expecting additional input to complete a\n\ | |
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1387 command. For example, if you are typing a @code{for} loop that spans several\n\ |
| 5794 | 1388 lines, Octave will print the secondary prompt at the beginning of\n\ |
| 1389 each line after the first. The default value of the secondary prompt\n\ | |
| 1390 string is @code{\"> \"}.\n\ | |
| 1391 @seealso{PS1, PS4}\n\ | |
| 1392 @end deftypefn") | |
| 1393 { | |
| 1394 return SET_INTERNAL_VARIABLE (PS2); | |
| 1395 } | |
| 2181 | 1396 |
| 5794 | 1397 DEFUN (PS4, args, nargout, |
| 1398 "-*- texinfo -*-\n\ | |
| 1399 @deftypefn {Built-in Function} {@var{val} =} PS4 ()\n\ | |
| 1400 @deftypefnx {Built-in Function} {@var{old_val} =} PS4 (@var{new_val})\n\ | |
| 1401 Query or set the character string used to prefix output produced\n\ | |
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1402 when echoing commands is enabled.\n\ |
| 6620 | 1403 The default value is @code{\"+ \"}.\n\ |
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1404 @xref{Diary and Echo Commands}, for a description of echoing commands.\n\ |
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1405 @seealso{echo, echo_executing_commands, PS1, PS2}\n\ |
| 5794 | 1406 @end deftypefn") |
| 1407 { | |
| 1408 return SET_INTERNAL_VARIABLE (PS4); | |
| 1409 } | |
| 2181 | 1410 |
| 5794 | 1411 DEFUN (completion_append_char, args, nargout, |
| 1412 "-*- texinfo -*-\n\ | |
| 1413 @deftypefn {Built-in Function} {@var{val} =} completion_append_char ()\n\ | |
| 1414 @deftypefnx {Built-in Function} {@var{old_val} =} completion_append_char (@var{new_val})\n\ | |
| 1415 Query or set the internal character variable that is appended to\n\ | |
| 1416 successful command-line completion attempts. The default\n\ | |
| 3332 | 1417 value is @code{\" \"} (a single space).\n\ |
| 5794 | 1418 @end deftypefn") |
| 1419 { | |
| 1420 return SET_INTERNAL_VARIABLE (completion_append_char); | |
| 1421 } | |
| 3019 | 1422 |
| 5794 | 1423 DEFUN (echo_executing_commands, args, nargout, |
| 1424 "-*- texinfo -*-\n\ | |
| 1425 @deftypefn {Built-in Function} {@var{val} =} echo_executing_commands ()\n\ | |
| 1426 @deftypefnx {Built-in Function} {@var{old_val} =} echo_executing_commands (@var{new_val})\n\ | |
| 1427 Query or set the internal variable that controls the echo state.\n\ | |
| 1428 It may be the sum of the following values:\n\ | |
| 3332 | 1429 \n\ |
| 1430 @table @asis\n\ | |
| 1431 @item 1\n\ | |
| 1432 Echo commands read from script files.\n\ | |
| 1433 \n\ | |
| 1434 @item 2\n\ | |
| 1435 Echo commands from functions.\n\ | |
| 1436 \n\ | |
| 1437 @item 4\n\ | |
| 1438 Echo commands read from command line.\n\ | |
| 1439 @end table\n\ | |
| 1440 \n\ | |
| 1441 More than one state can be active at once. For example, a value of 3 is\n\ | |
| 1442 equivalent to the command @kbd{echo on all}.\n\ | |
| 1443 \n\ | |
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1444 The value of @code{echo_executing_commands} may be set by the @kbd{echo}\n\ |
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1445 command or the command line option @code{--echo-commands}.\n\ |
| 5794 | 1446 @end deftypefn") |
| 1447 { | |
| 1448 return SET_INTERNAL_VARIABLE (echo_executing_commands); | |
| 2181 | 1449 } |
| 1450 | |
| 6257 | 1451 DEFUN (__request_drawnow__, args, , |
| 1452 "-*- texinfo -*-\n\ | |
| 1453 @deftypefn {Built-in Function} {} __request_drawnow__ ()\n\ | |
| 1454 @deftypefnx {Built-in Function} {} __request_drawnow__ (@var{flag})\n\ | |
| 6945 | 1455 Undocumented internal function.\n\ |
| 6257 | 1456 @end deftypefn") |
| 1457 { | |
| 1458 octave_value retval; | |
| 1459 | |
| 1460 int nargin = args.length (); | |
| 1461 | |
| 1462 if (nargin == 0) | |
| 1463 Vdrawnow_requested = true; | |
| 1464 else if (nargin == 1) | |
| 1465 Vdrawnow_requested = args(0).bool_value (); | |
| 1466 else | |
| 1467 print_usage (); | |
| 1468 | |
| 1469 return retval; | |
| 1470 } | |
| 1471 | |
| 7294 | 1472 DEFUN (__gud_mode__, args, , |
| 1473 "-*- texinfo -*-\n\ | |
| 1474 @deftypefn {Built-in Function} {} __gud_mode__ ()\n\ | |
| 1475 Undocumented internal function.\n\ | |
| 1476 @end deftypefn") | |
| 1477 { | |
| 1478 octave_value retval; | |
| 1479 | |
| 1480 int nargin = args.length (); | |
| 1481 | |
| 1482 if (nargin == 0) | |
| 1483 retval = Vgud_mode; | |
| 1484 else if (nargin == 1) | |
| 1485 Vgud_mode = args(0).bool_value (); | |
| 1486 else | |
| 1487 print_usage (); | |
| 1488 | |
| 1489 return retval; | |
| 1490 } | |
| 1491 | |
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1492 DEFUN (filemarker, args, nargout, |
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1493 "-*- texinfo -*-\n\ |
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1494 @deftypefn {Built-in Function} {} filemarker ()\n\ |
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1495 Returns or sets the character used to separate filename from the\n\ |
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1496 the subfunction names contained within the file. This can be used in\n\ |
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1497 a generic manner to interact with subfunctions. For example\n\ |
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1498 \n\ |
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1499 @example\n\ |
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1500 help ([\"myfunc\", filemarker, \"mysubfunc\"])\n\ |
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1501 @end example\n\ |
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1502 \n\ |
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1503 @noindent\n\ |
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1504 returns the help string associated with the sub-function @code{mysubfunc}\n\ |
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1505 of the function @code{myfunc}. Another use of @code{filemarker} is when\n\ |
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1506 debugging it allows easier placement of breakpoints within sub-functions.\n\ |
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1507 For example\n\ |
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1508 \n\ |
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1509 @example\n\ |
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1510 dbstop ([\"myfunc\", filemarker, \"mysubfunc\"])\n\ |
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1511 @end example\n\ |
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1512 \n\ |
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1513 @noindent\n\ |
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1514 will set a breakpoint at the first line of the subfunction @code{mysubfunc}.\n\ |
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1515 @end deftypefn") |
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1516 { |
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1517 char tmp = Vfilemarker; |
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1518 octave_value retval = SET_INTERNAL_VARIABLE (filemarker); |
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1519 |
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1520 // The character passed must not be a legal character for a function name |
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1521 if (! error_state && (::isalnum (Vfilemarker) || Vfilemarker == '_')) |
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1522 { |
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1523 Vfilemarker = tmp; |
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1524 error ("filemarker: character can not be a valid character for a function name"); |
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1525 } |
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1526 |
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1527 return retval; |
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1528 } |
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1529 |
| 1 | 1530 /* |
| 1531 ;;; Local Variables: *** | |
| 1532 ;;; mode: C++ *** | |
| 1533 ;;; End: *** | |
| 1534 */ |