Mercurial > octave
annotate libinterp/corefcn/input.cc @ 22091:0f6fc2ec3b1a
move call_stack class to a separate file
* call-stack.h, call-stack.cc: New files. Move call_stack class here
from toplev.h and toplev.cc. Update include file lists in other files
as needed.
* libinterp/corefcn/module.mk: Update.
author | John W. Eaton <jwe@octave.org> |
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date | Mon, 11 Jul 2016 17:05:33 -0400 |
parents | c2c668b3051b |
children | 9203833cab7d |
rev | line source |
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1 | 1 /* |
2 | |
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3 Copyright (C) 1993-2015 John W. Eaton |
1 | 4 |
5 This file is part of Octave. | |
6 | |
7 Octave is free software; you can redistribute it and/or modify it | |
8 under the terms of the GNU General Public License as published by the | |
7016 | 9 Free Software Foundation; either version 3 of the License, or (at your |
10 option) any later version. | |
1 | 11 |
12 Octave is distributed in the hope that it will be useful, but WITHOUT | |
13 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
14 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
15 for more details. | |
16 | |
17 You should have received a copy of the GNU General Public License | |
7016 | 18 along with Octave; see the file COPYING. If not, see |
19 <http://www.gnu.org/licenses/>. | |
1 | 20 |
21 */ | |
22 | |
2939 | 23 // Get command input interactively or from files. |
1 | 24 |
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25 #if defined (HAVE_CONFIG_H) |
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26 # include "config.h" |
1 | 27 #endif |
28 | |
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29 #include <cstdio> |
1343 | 30 #include <cstdlib> |
31 #include <cstring> | |
32 #include <cassert> | |
33 | |
3503 | 34 #include <iostream> |
5765 | 35 #include <sstream> |
1728 | 36 #include <string> |
37 | |
2927 | 38 #include "cmd-edit.h" |
3189 | 39 #include "file-ops.h" |
4153 | 40 #include "quit.h" |
1755 | 41 #include "str-vec.h" |
42 | |
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43 #include "call-stack.h" |
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44 #include "debug.h" |
1352 | 45 #include "defun.h" |
46 #include "dirfns.h" | |
1 | 47 #include "error.h" |
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48 #include "errwarn.h" |
3016 | 49 #include "help.h" |
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50 #include "hook-fcn.h" |
1 | 51 #include "input.h" |
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52 #include "lex.h" |
5832 | 53 #include "load-path.h" |
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54 #include "octave.h" |
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55 #include "octave-link.h" |
1352 | 56 #include "oct-map.h" |
1742 | 57 #include "oct-hist.h" |
1670 | 58 #include "toplev.h" |
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59 #include "octave-link.h" |
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60 #include "ovl.h" |
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61 #include "ov-fcn-handle.h" |
1 | 62 #include "pager.h" |
529 | 63 #include "parse.h" |
3772 | 64 #include "pt.h" |
1755 | 65 #include "pt-const.h" |
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66 #include "pt-eval.h" |
3805 | 67 #include "pt-stmt.h" |
1352 | 68 #include "sighandlers.h" |
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69 #include "symtab.h" |
1114 | 70 #include "sysdep.h" |
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71 #include "toplev.h" |
3098 | 72 #include "unwind-prot.h" |
1352 | 73 #include "utils.h" |
74 #include "variables.h" | |
529 | 75 |
2181 | 76 // Primary prompt string. |
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77 static std::string VPS1; |
2181 | 78 |
79 // Secondary prompt string. | |
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80 static std::string VPS2; |
2181 | 81 |
82 // String printed before echoed input (enabled by --echo-input). | |
5794 | 83 std::string VPS4 = "+ "; |
2181 | 84 |
3019 | 85 // Echo commands as they are executed? |
86 // | |
87 // 1 ==> echo commands read from script files | |
88 // 2 ==> echo commands from functions | |
89 // 4 ==> echo commands read from command line | |
90 // | |
91 // more than one state can be active at once. | |
5794 | 92 int Vecho_executing_commands = ECHO_OFF; |
3019 | 93 |
3165 | 94 // The time we last printed a prompt. |
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95 octave::sys::time Vlast_prompt_time = 0.0; |
3165 | 96 |
2181 | 97 // Character to append after successful command-line completion attempts. |
5794 | 98 static char Vcompletion_append_char = ' '; |
2181 | 99 |
3804 | 100 // TRUE after a call to completion_matches. |
2299 | 101 bool octave_completion_matches_called = false; |
102 | |
6257 | 103 // TRUE if the plotting system has requested a call to drawnow at |
104 // the next user prompt. | |
7409 | 105 bool Vdrawnow_requested = false; |
6257 | 106 |
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107 // TRUE if we are in debugging mode. |
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108 bool Vdebugging = false; |
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109 |
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110 // If we are in debugging mode, this is the last command entered, so |
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111 // that we can repeat the previous command if the user just types RET. |
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112 static std::string last_debugging_command = "\n"; |
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113 |
7294 | 114 // TRUE if we are running in the Emacs GUD mode. |
115 static bool Vgud_mode = false; | |
116 | |
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117 // The filemarker used to separate filenames from subfunction names |
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118 char Vfilemarker = '>'; |
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119 |
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120 static hook_function_list input_event_hook_functions; |
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121 |
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122 // For octave_quit. |
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123 void |
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124 remove_input_event_hook_functions (void) |
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125 { |
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126 input_event_hook_functions.clear (); |
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127 } |
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128 |
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129 void |
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130 set_default_prompts (void) |
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131 { |
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132 // Use literal "octave" instead of "\\s" to avoid setting the prompt |
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133 // to "octave.exe" or "octave-gui", etc. |
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134 |
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135 VPS1 = "octave:\\#> "; |
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136 VPS2 = "> "; |
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137 VPS4 = "+ "; |
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138 |
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139 octave_link::set_default_prompts (VPS1, VPS2, VPS4); |
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140 } |
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141 |
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142 void |
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143 octave_base_reader::do_input_echo (const std::string& input_string) const |
1044 | 144 { |
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145 bool forced_interactive = octave::application::forced_interactive (); |
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146 |
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147 int do_echo = reading_script_file () |
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148 ? (Vecho_executing_commands & ECHO_SCRIPTS) |
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149 : ((Vecho_executing_commands & ECHO_CMD_LINE) && ! forced_interactive); |
1588 | 150 |
151 if (do_echo) | |
1044 | 152 { |
1403 | 153 if (forced_interactive) |
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154 { |
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155 if (pflag > 0) |
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156 octave_stdout << octave::command_editor::decode_prompt_string (VPS1); |
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157 else |
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158 octave_stdout << octave::command_editor::decode_prompt_string (VPS2); |
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159 } |
1403 | 160 else |
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161 octave_stdout << octave::command_editor::decode_prompt_string (VPS4); |
1044 | 162 |
1755 | 163 if (! input_string.empty ()) |
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164 { |
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165 octave_stdout << input_string; |
1755 | 166 |
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167 if (input_string[input_string.length () - 1] != '\n') |
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168 octave_stdout << "\n"; |
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169 } |
1044 | 170 } |
171 } | |
172 | |
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173 static std::string |
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174 gnu_readline (const std::string& s, bool& eof) |
1822 | 175 { |
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176 octave_quit (); |
5142 | 177 |
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178 eof = false; |
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179 |
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180 std::string retval = octave::command_editor::readline (s, eof); |
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181 |
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182 if (! eof && retval.empty ()) |
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183 retval = "\n"; |
1822 | 184 |
185 return retval; | |
186 } | |
581 | 187 |
6257 | 188 static inline std::string |
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189 interactive_input (const std::string& s, bool& eof) |
6257 | 190 { |
191 Vlast_prompt_time.stamp (); | |
192 | |
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193 if (Vdrawnow_requested && octave::application::interactive ()) |
6257 | 194 { |
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195 bool eval_error = false; |
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196 |
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197 try |
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198 { |
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199 feval ("drawnow"); |
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200 } |
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201 catch (const octave_execution_exception& e) |
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202 { |
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203 eval_error = true; |
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204 |
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205 std::string stack_trace = e.info (); |
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206 |
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207 if (! stack_trace.empty ()) |
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208 std::cerr << stack_trace; |
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209 |
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210 if (octave::application::interactive ()) |
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211 recover_from_exception (); |
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212 } |
6257 | 213 |
6367 | 214 flush_octave_stdout (); |
215 | |
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216 // We set Vdrawnow_requested to false even if there is an error in |
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217 // drawnow so that the error doesn't reappear at every prompt. |
6305 | 218 |
6257 | 219 Vdrawnow_requested = false; |
6305 | 220 |
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221 if (eval_error) |
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222 return "\n"; |
6257 | 223 } |
224 | |
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225 return gnu_readline (s, eof); |
6257 | 226 } |
227 | |
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228 std::string |
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229 octave_base_reader::octave_gets (bool& eof) |
1 | 230 { |
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231 octave_quit (); |
5142 | 232 |
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233 eof = false; |
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234 |
3523 | 235 std::string retval; |
1 | 236 |
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237 // Process pre input event hook function prior to flushing output and |
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238 // printing the prompt. |
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239 |
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240 if (octave::application::interactive ()) |
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241 { |
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242 if (! Vdebugging) |
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243 octave_link::exit_debugger_event (); |
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244 |
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245 octave_link::pre_input_event (); |
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246 |
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247 octave_link::set_workspace (); |
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248 } |
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249 |
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250 bool history_skip_auto_repeated_debugging_command = false; |
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251 |
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252 std::string ps = (pflag > 0) ? VPS1 : VPS2; |
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253 |
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254 std::string prompt = octave::command_editor::decode_prompt_string (ps); |
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255 |
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256 octave::pipe_handler_error_count = 0; |
1755 | 257 |
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258 flush_octave_stdout (); |
2618 | 259 |
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260 octave_pager_stream::reset (); |
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261 octave_diary_stream::reset (); |
1 | 262 |
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263 octave_diary << prompt; |
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264 |
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265 retval = interactive_input (prompt, eof); |
581 | 266 |
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267 // There is no need to update the load_path cache if there is no |
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268 // user input. |
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269 if (retval != "\n" |
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270 && retval.find_first_not_of (" \t\n\r") != std::string::npos) |
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271 { |
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272 load_path::update (); |
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273 |
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274 if (Vdebugging) |
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275 last_debugging_command = retval; |
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276 else |
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277 last_debugging_command = "\n"; |
1 | 278 } |
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279 else if (Vdebugging) |
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280 { |
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281 retval = last_debugging_command; |
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282 history_skip_auto_repeated_debugging_command = true; |
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283 } |
1 | 284 |
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285 if (retval != "\n") |
1 | 286 { |
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287 if (! history_skip_auto_repeated_debugging_command) |
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288 { |
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289 if (octave::command_history::add (retval)) |
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290 octave_link::append_history (retval); |
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291 } |
1 | 292 |
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293 octave_diary << retval; |
3176 | 294 |
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295 if (retval[retval.length () - 1] != '\n') |
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296 octave_diary << "\n"; |
581 | 297 |
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298 do_input_echo (retval); |
1 | 299 } |
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300 else |
3176 | 301 octave_diary << "\n"; |
9476 | 302 |
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303 // Process post input event hook function after the internal history |
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304 // list has been updated. |
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305 |
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306 if (octave::application::interactive ()) |
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307 octave_link::post_input_event (); |
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308 |
1822 | 309 return retval; |
1 | 310 } |
311 | |
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312 bool |
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313 octave_base_reader::reading_fcn_file (void) const |
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314 { |
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315 return lexer ? lexer->reading_fcn_file : false; |
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316 } |
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317 |
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318 bool |
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319 octave_base_reader::reading_classdef_file (void) const |
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320 { |
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321 return lexer ? lexer->reading_classdef_file : false; |
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322 } |
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323 |
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324 bool |
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325 octave_base_reader::reading_script_file (void) const |
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326 { |
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327 return lexer ? lexer->reading_script_file : false; |
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328 } |
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329 |
581 | 330 // Fix things up so that input can come from the standard input. This |
331 // may need to become much more complicated, which is why it's in a | |
332 // separate function. | |
333 | |
1 | 334 FILE * |
335 get_input_from_stdin (void) | |
336 { | |
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337 octave::command_editor::set_input_stream (stdin); |
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338 return octave::command_editor::get_input_stream (); |
1 | 339 } |
340 | |
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341 // FIXME: make this generate filenames when appropriate. |
2921 | 342 |
2247 | 343 static string_vector |
3523 | 344 generate_possible_completions (const std::string& text, std::string& prefix, |
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345 std::string& hint) |
1280 | 346 { |
2247 | 347 string_vector names; |
1280 | 348 |
2921 | 349 prefix = ""; |
1280 | 350 |
4604 | 351 if (looks_like_struct (text)) |
1430 | 352 names = generate_struct_completions (text, prefix, hint); |
353 else | |
2247 | 354 names = make_name_list (); |
1280 | 355 |
2944 | 356 // Sort and remove duplicates. |
2348 | 357 |
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358 names.sort (true); |
2348 | 359 |
1280 | 360 return names; |
361 } | |
362 | |
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363 static bool |
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364 is_completing_dirfns (void) |
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365 { |
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366 static std::string dirfns_commands[] = {"cd", "ls"}; |
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367 static const size_t dirfns_commands_length = 2; |
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368 |
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369 bool retval = false; |
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370 |
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371 std::string line = octave::command_editor::get_line_buffer (); |
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372 |
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373 for (size_t i = 0; i < dirfns_commands_length; i++) |
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374 { |
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375 int index = line.find (dirfns_commands[i] + " "); |
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376 |
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377 if (index == 0) |
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378 { |
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379 retval = true; |
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380 break; |
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381 } |
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382 } |
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383 |
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384 return retval; |
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385 } |
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386 |
3536 | 387 static std::string |
3523 | 388 generate_completion (const std::string& text, int state) |
1280 | 389 { |
3523 | 390 std::string retval; |
2944 | 391 |
3523 | 392 static std::string prefix; |
393 static std::string hint; | |
1280 | 394 |
2921 | 395 static size_t hint_len = 0; |
1280 | 396 |
1 | 397 static int list_index = 0; |
2921 | 398 static int name_list_len = 0; |
4604 | 399 static int name_list_total_len = 0; |
2247 | 400 static string_vector name_list; |
4604 | 401 static string_vector file_name_list; |
1 | 402 |
1280 | 403 static int matches = 0; |
1 | 404 |
405 if (state == 0) | |
406 { | |
407 list_index = 0; | |
408 | |
2921 | 409 prefix = ""; |
1280 | 410 |
2921 | 411 hint = text; |
1280 | 412 |
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413 // No reason to display symbols while completing a |
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414 // file/directory operation. |
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415 |
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416 if (is_completing_dirfns ()) |
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417 name_list = string_vector (); |
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418 else |
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419 name_list = generate_possible_completions (text, prefix, hint); |
1280 | 420 |
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421 name_list_len = name_list.numel (); |
2921 | 422 |
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423 file_name_list = octave::command_editor::generate_filename_completions (text); |
4604 | 424 |
425 name_list.append (file_name_list); | |
426 | |
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427 name_list_total_len = name_list.numel (); |
4604 | 428 |
2921 | 429 hint_len = hint.length (); |
1280 | 430 |
431 matches = 0; | |
2247 | 432 |
2921 | 433 for (int i = 0; i < name_list_len; i++) |
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434 if (hint == name_list[i].substr (0, hint_len)) |
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435 matches++; |
1 | 436 } |
437 | |
4604 | 438 if (name_list_total_len > 0 && matches > 0) |
1 | 439 { |
4604 | 440 while (list_index < name_list_total_len) |
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441 { |
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442 std::string name = name_list[list_index]; |
2247 | 443 |
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444 list_index++; |
2247 | 445 |
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446 if (hint == name.substr (0, hint_len)) |
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447 { |
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448 if (list_index <= name_list_len && ! prefix.empty ()) |
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449 retval = prefix + "." + name; |
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450 else |
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451 retval = name; |
1280 | 452 |
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453 // FIXME: looks_like_struct is broken for now, |
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454 // so it always returns false. |
4179 | 455 |
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456 if (matches == 1 && looks_like_struct (retval)) |
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457 { |
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458 // Don't append anything, since we don't know |
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459 // whether it should be '(' or '.'. |
4179 | 460 |
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461 octave::command_editor::set_completion_append_character ('\0'); |
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462 } |
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463 else |
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464 octave::command_editor::set_completion_append_character |
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465 (Vcompletion_append_char); |
1280 | 466 |
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467 break; |
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468 } |
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469 } |
1 | 470 } |
471 | |
2944 | 472 return retval; |
1 | 473 } |
474 | |
6979 | 475 static std::string |
476 quoting_filename (const std::string &text, int, char quote) | |
477 { | |
478 if (quote) | |
479 return text; | |
480 else | |
481 return (std::string ("'") + text); | |
482 } | |
483 | |
2927 | 484 void |
485 initialize_command_input (void) | |
486 { | |
487 // If we are using readline, this allows conditional parsing of the | |
488 // .inputrc file. | |
269 | 489 |
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490 octave::command_editor::set_name ("Octave"); |
1358 | 491 |
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492 // FIXME: this needs to include a comma too, but that |
3933 | 493 // causes trouble for the new struct element completion code. |
494 | |
4272 | 495 static const char *s = "\t\n !\"\'*+-/:;<=>(){}[\\]^`~"; |
3933 | 496 |
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497 octave::command_editor::set_basic_word_break_characters (s); |
3933 | 498 |
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499 octave::command_editor::set_completer_word_break_characters (s); |
3933 | 500 |
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501 octave::command_editor::set_basic_quote_characters ("\""); |
2944 | 502 |
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503 octave::command_editor::set_filename_quote_characters (" \t\n\\\"'@<>=;|&()#$`?*[!:{"); |
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504 octave::command_editor::set_completer_quote_characters ("'\""); |
6979 | 505 |
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506 octave::command_editor::set_completion_function (generate_completion); |
6979 | 507 |
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508 octave::command_editor::set_quoting_function (quoting_filename); |
269 | 509 } |
510 | |
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511 static void |
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512 execute_in_debugger_handler (const std::pair<std::string, int>& arg) |
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513 { |
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514 octave_link::execute_in_debugger_event (arg.first, arg.second); |
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515 } |
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516 |
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517 static void |
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518 get_debug_input (const std::string& prompt) |
269 | 519 { |
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520 octave::unwind_protect frame; |
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521 |
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522 bool silent = tree_evaluator::quiet_breakpoint_flag; |
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523 tree_evaluator::quiet_breakpoint_flag = false; |
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524 |
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525 octave_user_code *caller = octave_call_stack::caller_user_code (); |
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526 std::string nm; |
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527 int curr_debug_line; |
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528 |
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529 bool have_file = false; |
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530 |
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531 if (caller) |
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532 { |
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533 nm = caller->fcn_file_name (); |
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534 |
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535 if (nm.empty ()) |
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536 nm = caller->name (); |
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537 else |
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538 have_file = true; |
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539 |
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540 curr_debug_line = octave_call_stack::caller_user_code_line (); |
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541 } |
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542 else |
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543 curr_debug_line = octave_call_stack::current_line (); |
3180 | 544 |
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545 std::ostringstream buf; |
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546 |
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547 if (! nm.empty ()) |
3180 | 548 { |
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549 if (Vgud_mode) |
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550 { |
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551 static char ctrl_z = 'Z' & 0x1f; |
269 | 552 |
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553 buf << ctrl_z << ctrl_z << nm << ":" << curr_debug_line; |
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554 } |
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555 else |
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556 { |
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557 // FIXME: we should come up with a clean way to detect |
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558 // that we are stopped on the no-op command that marks the |
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559 // end of a function or script. |
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560 |
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561 if (! silent) |
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562 { |
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563 buf << "stopped in " << nm; |
1 | 564 |
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565 if (curr_debug_line > 0) |
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John W. Eaton <jwe@octave.org>
parents:
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|
566 buf << " at line " << curr_debug_line; |
c1ce43276b86
avoid printing debug location in cmd window when using GUI to step
John W. Eaton <jwe@octave.org>
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diff
changeset
|
567 } |
8658
73c4516fae10
New evaluator and debugger derived from tree-walker class
John W. Eaton <jwe@octave.org>
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diff
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|
568 |
10315
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10186
diff
changeset
|
569 if (have_file) |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
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diff
changeset
|
570 { |
16419
16bfbf9136d3
avoid creating unnecessary octave_value objects for octave_link calls
John W. Eaton <jwe@octave.org>
parents:
16416
diff
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|
571 octave_link::enter_debugger_event (nm, curr_debug_line); |
16395
fc491da603f6
also provide a hook for exiting debugger
John W. Eaton <jwe@octave.org>
parents:
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diff
changeset
|
572 |
16524
6a8e63dadfad
provide octave_link::set_workspace function with default values
John W. Eaton <jwe@octave.org>
parents:
16502
diff
changeset
|
573 octave_link::set_workspace (); |
16468
0f143f68078d
use signal/slot for updating workspace instead of using event listener
John W. Eaton <jwe@octave.org>
parents:
16438
diff
changeset
|
574 |
16438
a971d8bdaadc
use signals instead of event queue for entering/leaving debug mode
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parents:
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diff
changeset
|
575 frame.add_fcn (execute_in_debugger_handler, |
16419
16bfbf9136d3
avoid creating unnecessary octave_value objects for octave_link calls
John W. Eaton <jwe@octave.org>
parents:
16416
diff
changeset
|
576 std::pair<std::string, int> (nm, curr_debug_line)); |
16374
8b0a04cbdc9d
provide hook function for dbstop events
John W. Eaton <jwe@octave.org>
parents:
16373
diff
changeset
|
577 |
19379
c1ce43276b86
avoid printing debug location in cmd window when using GUI to step
John W. Eaton <jwe@octave.org>
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diff
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|
578 if (! silent) |
c1ce43276b86
avoid printing debug location in cmd window when using GUI to step
John W. Eaton <jwe@octave.org>
parents:
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diff
changeset
|
579 { |
c1ce43276b86
avoid printing debug location in cmd window when using GUI to step
John W. Eaton <jwe@octave.org>
parents:
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changeset
|
580 std::string line_buf |
c1ce43276b86
avoid printing debug location in cmd window when using GUI to step
John W. Eaton <jwe@octave.org>
parents:
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diff
changeset
|
581 = get_file_line (nm, curr_debug_line); |
8658
73c4516fae10
New evaluator and debugger derived from tree-walker class
John W. Eaton <jwe@octave.org>
parents:
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diff
changeset
|
582 |
19379
c1ce43276b86
avoid printing debug location in cmd window when using GUI to step
John W. Eaton <jwe@octave.org>
parents:
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diff
changeset
|
583 if (! line_buf.empty ()) |
c1ce43276b86
avoid printing debug location in cmd window when using GUI to step
John W. Eaton <jwe@octave.org>
parents:
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diff
changeset
|
584 buf << "\n" << curr_debug_line << ": " << line_buf; |
c1ce43276b86
avoid printing debug location in cmd window when using GUI to step
John W. Eaton <jwe@octave.org>
parents:
18694
diff
changeset
|
585 } |
10315
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10186
diff
changeset
|
586 } |
57a59eae83cc
untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents:
10186
diff
changeset
|
587 } |
3180 | 588 } |
589 | |
19379
c1ce43276b86
avoid printing debug location in cmd window when using GUI to step
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parents:
18694
diff
changeset
|
590 if (silent) |
21748
176536b15d68
use namespace for command_editor and command_history classes
John W. Eaton <jwe@octave.org>
parents:
21743
diff
changeset
|
591 octave::command_editor::erase_empty_line (true); |
19595
be7ac98fab43
strip trailing whitespace from most source files
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parents:
19379
diff
changeset
|
592 |
7787
6b521b1e3631
Add dbquit and make dbstep compatible. Use parser in debug mode to handle multi-line input
David Bateman <dbateman@free.fr>
parents:
7758
diff
changeset
|
593 std::string msg = buf.str (); |
6b521b1e3631
Add dbquit and make dbstep compatible. Use parser in debug mode to handle multi-line input
David Bateman <dbateman@free.fr>
parents:
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diff
changeset
|
594 |
6b521b1e3631
Add dbquit and make dbstep compatible. Use parser in debug mode to handle multi-line input
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parents:
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diff
changeset
|
595 if (! msg.empty ()) |
9484
bbe033dcfe13
make dbwhere work when called at keyboard prompt
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parents:
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diff
changeset
|
596 std::cerr << msg << std::endl; |
7787
6b521b1e3631
Add dbquit and make dbstep compatible. Use parser in debug mode to handle multi-line input
David Bateman <dbateman@free.fr>
parents:
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diff
changeset
|
597 |
10066
2cd940306a06
make unwind_protect frames local
Jaroslav Hajek <highegg@gmail.com>
parents:
9999
diff
changeset
|
598 frame.protect_var (VPS1); |
7787
6b521b1e3631
Add dbquit and make dbstep compatible. Use parser in debug mode to handle multi-line input
David Bateman <dbateman@free.fr>
parents:
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diff
changeset
|
599 VPS1 = prompt; |
6b521b1e3631
Add dbquit and make dbstep compatible. Use parser in debug mode to handle multi-line input
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parents:
7758
diff
changeset
|
600 |
22089
c2c668b3051b
use classes for octave application and interpreter
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parents:
22051
diff
changeset
|
601 octave::application *app = octave::application::app (); |
c2c668b3051b
use classes for octave application and interpreter
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parents:
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diff
changeset
|
602 |
c2c668b3051b
use classes for octave application and interpreter
John W. Eaton <jwe@octave.org>
parents:
22051
diff
changeset
|
603 if (! app->interactive ()) |
7787
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Add dbquit and make dbstep compatible. Use parser in debug mode to handle multi-line input
David Bateman <dbateman@free.fr>
parents:
7758
diff
changeset
|
604 { |
22089
c2c668b3051b
use classes for octave application and interpreter
John W. Eaton <jwe@octave.org>
parents:
22051
diff
changeset
|
605 |
c2c668b3051b
use classes for octave application and interpreter
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diff
changeset
|
606 frame.add_method (app, &octave::application::interactive, |
c2c668b3051b
use classes for octave application and interpreter
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parents:
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diff
changeset
|
607 app->interactive ()); |
c2c668b3051b
use classes for octave application and interpreter
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parents:
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diff
changeset
|
608 |
c2c668b3051b
use classes for octave application and interpreter
John W. Eaton <jwe@octave.org>
parents:
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diff
changeset
|
609 frame.add_method (app, &octave::application::forced_interactive, |
c2c668b3051b
use classes for octave application and interpreter
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parents:
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diff
changeset
|
610 app->forced_interactive ()); |
c2c668b3051b
use classes for octave application and interpreter
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parents:
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diff
changeset
|
611 |
c2c668b3051b
use classes for octave application and interpreter
John W. Eaton <jwe@octave.org>
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diff
changeset
|
612 app->interactive (true); |
c2c668b3051b
use classes for octave application and interpreter
John W. Eaton <jwe@octave.org>
parents:
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diff
changeset
|
613 |
c2c668b3051b
use classes for octave application and interpreter
John W. Eaton <jwe@octave.org>
parents:
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diff
changeset
|
614 app->forced_interactive (true); |
12907
6e1b9f079e0f
allow debugging when input is not coming from a tty
John W. Eaton <jwe@octave.org>
parents:
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diff
changeset
|
615 } |
6e1b9f079e0f
allow debugging when input is not coming from a tty
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parents:
12573
diff
changeset
|
616 |
16187
490625211945
don't use new to create parser object
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parents:
16177
diff
changeset
|
617 octave_parser curr_parser; |
16151 | 618 |
12907
6e1b9f079e0f
allow debugging when input is not coming from a tty
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parents:
12573
diff
changeset
|
619 while (Vdebugging) |
6e1b9f079e0f
allow debugging when input is not coming from a tty
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diff
changeset
|
620 { |
20639
31219c56874f
don't exit debugger if an error occurs (bug #46251)
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parents:
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diff
changeset
|
621 try |
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diff
changeset
|
622 { |
31219c56874f
don't exit debugger if an error occurs (bug #46251)
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parents:
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diff
changeset
|
623 reset_error_handler (); |
12907
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allow debugging when input is not coming from a tty
John W. Eaton <jwe@octave.org>
parents:
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diff
changeset
|
624 |
20639
31219c56874f
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John W. Eaton <jwe@octave.org>
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diff
changeset
|
625 curr_parser.reset (); |
9999
653716f3d976
get_debug_input: force interactive input mode; don't get user input unless stdin is a tty
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parents:
9485
diff
changeset
|
626 |
20639
31219c56874f
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parents:
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diff
changeset
|
627 int retval = curr_parser.run (); |
9999
653716f3d976
get_debug_input: force interactive input mode; don't get user input unless stdin is a tty
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parents:
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diff
changeset
|
628 |
21748
176536b15d68
use namespace for command_editor and command_history classes
John W. Eaton <jwe@octave.org>
parents:
21743
diff
changeset
|
629 if (octave::command_editor::interrupt (false)) |
20639
31219c56874f
don't exit debugger if an error occurs (bug #46251)
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diff
changeset
|
630 break; |
31219c56874f
don't exit debugger if an error occurs (bug #46251)
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diff
changeset
|
631 else |
16382
389b09a914e2
allow gui to force readline to return from its idle/read loop
John W. Eaton <jwe@octave.org>
parents:
16381
diff
changeset
|
632 { |
20639
31219c56874f
don't exit debugger if an error occurs (bug #46251)
John W. Eaton <jwe@octave.org>
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diff
changeset
|
633 if (retval == 0 && curr_parser.stmt_list) |
31219c56874f
don't exit debugger if an error occurs (bug #46251)
John W. Eaton <jwe@octave.org>
parents:
20582
diff
changeset
|
634 { |
31219c56874f
don't exit debugger if an error occurs (bug #46251)
John W. Eaton <jwe@octave.org>
parents:
20582
diff
changeset
|
635 curr_parser.stmt_list->accept (*current_evaluator); |
9999
653716f3d976
get_debug_input: force interactive input mode; don't get user input unless stdin is a tty
John W. Eaton <jwe@octave.org>
parents:
9485
diff
changeset
|
636 |
20639
31219c56874f
don't exit debugger if an error occurs (bug #46251)
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parents:
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diff
changeset
|
637 if (octave_completion_matches_called) |
31219c56874f
don't exit debugger if an error occurs (bug #46251)
John W. Eaton <jwe@octave.org>
parents:
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diff
changeset
|
638 octave_completion_matches_called = false; |
31219c56874f
don't exit debugger if an error occurs (bug #46251)
John W. Eaton <jwe@octave.org>
parents:
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diff
changeset
|
639 } |
31219c56874f
don't exit debugger if an error occurs (bug #46251)
John W. Eaton <jwe@octave.org>
parents:
20582
diff
changeset
|
640 |
31219c56874f
don't exit debugger if an error occurs (bug #46251)
John W. Eaton <jwe@octave.org>
parents:
20582
diff
changeset
|
641 octave_quit (); |
16382
389b09a914e2
allow gui to force readline to return from its idle/read loop
John W. Eaton <jwe@octave.org>
parents:
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diff
changeset
|
642 } |
20639
31219c56874f
don't exit debugger if an error occurs (bug #46251)
John W. Eaton <jwe@octave.org>
parents:
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diff
changeset
|
643 } |
20739
9e8a6d6d6de9
restore stack trace for errors that occur in debug mode
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parents:
20713
diff
changeset
|
644 catch (const octave_execution_exception& e) |
20639
31219c56874f
don't exit debugger if an error occurs (bug #46251)
John W. Eaton <jwe@octave.org>
parents:
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diff
changeset
|
645 { |
20739
9e8a6d6d6de9
restore stack trace for errors that occur in debug mode
John W. Eaton <jwe@octave.org>
parents:
20713
diff
changeset
|
646 std::string stack_trace = e.info (); |
9e8a6d6d6de9
restore stack trace for errors that occur in debug mode
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parents:
20713
diff
changeset
|
647 |
9e8a6d6d6de9
restore stack trace for errors that occur in debug mode
John W. Eaton <jwe@octave.org>
parents:
20713
diff
changeset
|
648 if (! stack_trace.empty ()) |
9e8a6d6d6de9
restore stack trace for errors that occur in debug mode
John W. Eaton <jwe@octave.org>
parents:
20713
diff
changeset
|
649 std::cerr << stack_trace; |
9e8a6d6d6de9
restore stack trace for errors that occur in debug mode
John W. Eaton <jwe@octave.org>
parents:
20713
diff
changeset
|
650 |
20756
200ae1d650b7
propagate octave_execution_exception objects through try/catch blocks
John W. Eaton <jwe@octave.org>
parents:
20743
diff
changeset
|
651 // Ignore errors when in debugging mode; |
20739
9e8a6d6d6de9
restore stack trace for errors that occur in debug mode
John W. Eaton <jwe@octave.org>
parents:
20713
diff
changeset
|
652 recover_from_exception (); |
9999
653716f3d976
get_debug_input: force interactive input mode; don't get user input unless stdin is a tty
John W. Eaton <jwe@octave.org>
parents:
9485
diff
changeset
|
653 } |
7787
6b521b1e3631
Add dbquit and make dbstep compatible. Use parser in debug mode to handle multi-line input
David Bateman <dbateman@free.fr>
parents:
7758
diff
changeset
|
654 } |
529 | 655 } |
656 | |
16195
b52d2f9294b6
use class for reading lexer input
John W. Eaton <jwe@octave.org>
parents:
16187
diff
changeset
|
657 const std::string octave_base_reader::in_src ("invalid"); |
b52d2f9294b6
use class for reading lexer input
John W. Eaton <jwe@octave.org>
parents:
16187
diff
changeset
|
658 |
b52d2f9294b6
use class for reading lexer input
John W. Eaton <jwe@octave.org>
parents:
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diff
changeset
|
659 const std::string octave_terminal_reader::in_src ("terminal"); |
b52d2f9294b6
use class for reading lexer input
John W. Eaton <jwe@octave.org>
parents:
16187
diff
changeset
|
660 |
b52d2f9294b6
use class for reading lexer input
John W. Eaton <jwe@octave.org>
parents:
16187
diff
changeset
|
661 std::string |
b52d2f9294b6
use class for reading lexer input
John W. Eaton <jwe@octave.org>
parents:
16187
diff
changeset
|
662 octave_terminal_reader::get_input (bool& eof) |
b52d2f9294b6
use class for reading lexer input
John W. Eaton <jwe@octave.org>
parents:
16187
diff
changeset
|
663 { |
b52d2f9294b6
use class for reading lexer input
John W. Eaton <jwe@octave.org>
parents:
16187
diff
changeset
|
664 octave_quit (); |
b52d2f9294b6
use class for reading lexer input
John W. Eaton <jwe@octave.org>
parents:
16187
diff
changeset
|
665 |
b52d2f9294b6
use class for reading lexer input
John W. Eaton <jwe@octave.org>
parents:
16187
diff
changeset
|
666 eof = false; |
b52d2f9294b6
use class for reading lexer input
John W. Eaton <jwe@octave.org>
parents:
16187
diff
changeset
|
667 |
16207
0467d68ca891
move current_input_line to lexical_feedback class
John W. Eaton <jwe@octave.org>
parents:
16203
diff
changeset
|
668 return octave_gets (eof); |
16195
b52d2f9294b6
use class for reading lexer input
John W. Eaton <jwe@octave.org>
parents:
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diff
changeset
|
669 } |
b52d2f9294b6
use class for reading lexer input
John W. Eaton <jwe@octave.org>
parents:
16187
diff
changeset
|
670 |
b52d2f9294b6
use class for reading lexer input
John W. Eaton <jwe@octave.org>
parents:
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diff
changeset
|
671 const std::string octave_file_reader::in_src ("file"); |
b52d2f9294b6
use class for reading lexer input
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parents:
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diff
changeset
|
672 |
b52d2f9294b6
use class for reading lexer input
John W. Eaton <jwe@octave.org>
parents:
16187
diff
changeset
|
673 std::string |
b52d2f9294b6
use class for reading lexer input
John W. Eaton <jwe@octave.org>
parents:
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diff
changeset
|
674 octave_file_reader::get_input (bool& eof) |
b52d2f9294b6
use class for reading lexer input
John W. Eaton <jwe@octave.org>
parents:
16187
diff
changeset
|
675 { |
b52d2f9294b6
use class for reading lexer input
John W. Eaton <jwe@octave.org>
parents:
16187
diff
changeset
|
676 octave_quit (); |
b52d2f9294b6
use class for reading lexer input
John W. Eaton <jwe@octave.org>
parents:
16187
diff
changeset
|
677 |
b52d2f9294b6
use class for reading lexer input
John W. Eaton <jwe@octave.org>
parents:
16187
diff
changeset
|
678 eof = false; |
b52d2f9294b6
use class for reading lexer input
John W. Eaton <jwe@octave.org>
parents:
16187
diff
changeset
|
679 |
16207
0467d68ca891
move current_input_line to lexical_feedback class
John W. Eaton <jwe@octave.org>
parents:
16203
diff
changeset
|
680 return octave_fgets (file, eof); |
16195
b52d2f9294b6
use class for reading lexer input
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parents:
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diff
changeset
|
681 } |
b52d2f9294b6
use class for reading lexer input
John W. Eaton <jwe@octave.org>
parents:
16187
diff
changeset
|
682 |
b52d2f9294b6
use class for reading lexer input
John W. Eaton <jwe@octave.org>
parents:
16187
diff
changeset
|
683 const std::string octave_eval_string_reader::in_src ("eval_string"); |
b52d2f9294b6
use class for reading lexer input
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parents:
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diff
changeset
|
684 |
b52d2f9294b6
use class for reading lexer input
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parents:
16187
diff
changeset
|
685 std::string |
b52d2f9294b6
use class for reading lexer input
John W. Eaton <jwe@octave.org>
parents:
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diff
changeset
|
686 octave_eval_string_reader::get_input (bool& eof) |
b52d2f9294b6
use class for reading lexer input
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parents:
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diff
changeset
|
687 { |
b52d2f9294b6
use class for reading lexer input
John W. Eaton <jwe@octave.org>
parents:
16187
diff
changeset
|
688 octave_quit (); |
b52d2f9294b6
use class for reading lexer input
John W. Eaton <jwe@octave.org>
parents:
16187
diff
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|
689 |
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690 eof = false; |
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691 |
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692 std::string retval; |
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693 |
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694 retval = eval_string; |
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695 |
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696 // Clear the eval string so that the next call will return |
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697 // an empty character string with EOF = true. |
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698 eval_string = ""; |
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699 |
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700 if (retval.empty ()) |
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701 eof = true; |
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702 |
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703 return retval; |
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704 } |
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705 |
581 | 706 // If the user simply hits return, this will produce an empty matrix. |
707 | |
2086 | 708 static octave_value_list |
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709 get_user_input (const octave_value_list& args, int nargout) |
529 | 710 { |
3100 | 711 octave_value_list retval; |
529 | 712 |
713 int read_as_string = 0; | |
714 | |
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715 if (args.length () == 2) |
529 | 716 read_as_string++; |
717 | |
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718 std::string prompt = args(0).xstring_value ("input: unrecognized argument"); |
4975 | 719 |
2095 | 720 flush_octave_stdout (); |
529 | 721 |
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722 octave_pager_stream::reset (); |
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723 octave_diary_stream::reset (); |
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724 |
4565 | 725 octave_diary << prompt; |
726 | |
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727 bool eof = false; |
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728 |
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729 std::string input_buf = interactive_input (prompt.c_str (), eof); |
529 | 730 |
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731 if (input_buf.empty ()) |
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732 error ("input: reading user-input failed!"); |
529 | 733 |
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734 size_t len = input_buf.length (); |
4565 | 735 |
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736 octave_diary << input_buf; |
4565 | 737 |
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738 if (input_buf[len - 1] != '\n') |
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739 octave_diary << "\n"; |
3772 | 740 |
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741 if (len < 1) |
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742 return read_as_string ? octave_value ("") : octave_value (Matrix ()); |
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743 |
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744 if (read_as_string) |
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745 { |
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746 // FIXME: fix gnu_readline and octave_gets instead! |
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747 if (input_buf.length () == 1 && input_buf[0] == '\n') |
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748 retval(0) = ""; |
529 | 749 else |
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750 retval(0) = input_buf; |
529 | 751 } |
752 else | |
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753 { |
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754 int parse_status = 0; |
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755 |
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756 retval = eval_string (input_buf, true, parse_status, nargout); |
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757 |
21885
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758 if (! Vdebugging && retval.empty ()) |
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759 retval(0) = Matrix (); |
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760 } |
529 | 761 |
762 return retval; | |
763 } | |
764 | |
3100 | 765 DEFUN (input, args, nargout, |
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766 doc: /* -*- texinfo -*- |
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767 @deftypefn {} {@var{ans} =} input (@var{prompt}) |
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768 @deftypefnx {} {@var{ans} =} input (@var{prompt}, "s") |
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769 Print @var{prompt} and wait for user input. |
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770 |
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771 For example, |
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772 |
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773 @example |
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774 input ("Pick a number, any number! ") |
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775 @end example |
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776 |
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777 @noindent |
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778 prints the prompt |
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779 |
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780 @example |
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781 Pick a number, any number! |
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782 @end example |
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783 |
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784 @noindent |
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785 and waits for the user to enter a value. The string entered by the user |
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786 is evaluated as an expression, so it may be a literal constant, a variable |
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787 name, or any other valid Octave code. |
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788 |
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789 The number of return arguments, their size, and their class depend on the |
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790 expression entered. |
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791 |
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792 If you are only interested in getting a literal string value, you can call |
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793 @code{input} with the character string @qcode{"s"} as the second argument. |
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794 This tells Octave to return the string entered by the user directly, without |
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795 evaluating it first. |
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796 |
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797 Because there may be output waiting to be displayed by the pager, it is a |
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798 good idea to always call @code{fflush (stdout)} before calling @code{input}. |
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799 This will ensure that all pending output is written to the screen before |
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800 your prompt. |
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801 @seealso{yes_or_no, kbhit, pause, menu, listdlg} |
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802 @end deftypefn */) |
529 | 803 { |
804 int nargin = args.length (); | |
805 | |
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806 if (nargin < 1 || nargin > 2) |
5823 | 807 print_usage (); |
529 | 808 |
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809 return get_user_input (args, std::max (nargout, 1)); |
529 | 810 } |
811 | |
5640 | 812 bool |
813 octave_yes_or_no (const std::string& prompt) | |
814 { | |
815 std::string prompt_string = prompt + "(yes or no) "; | |
816 | |
817 while (1) | |
818 { | |
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819 bool eof = false; |
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820 |
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821 std::string input_buf = interactive_input (prompt_string, eof); |
5640 | 822 |
823 if (input_buf == "yes") | |
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824 return true; |
5640 | 825 else if (input_buf == "no") |
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826 return false; |
5640 | 827 else |
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828 message (0, "Please answer yes or no."); |
5640 | 829 } |
830 } | |
831 | |
832 DEFUN (yes_or_no, args, , | |
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833 doc: /* -*- texinfo -*- |
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834 @deftypefn {} {@var{ans} =} yes_or_no ("@var{prompt}") |
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835 Ask the user a yes-or-no question. |
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836 |
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837 Return logical true if the answer is yes or false if the answer is no. |
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838 |
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839 Takes one argument, @var{prompt}, which is the string to display when asking |
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840 the question. @var{prompt} should end in a space; @code{yes-or-no} adds the |
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841 string @samp{(yes or no) } to it. The user must confirm the answer with |
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842 @key{RET} and can edit it until it has been confirmed. |
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843 @seealso{input} |
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844 @end deftypefn */) |
5640 | 845 { |
846 int nargin = args.length (); | |
847 | |
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848 if (nargin > 1) |
5823 | 849 print_usage (); |
5640 | 850 |
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851 std::string prompt; |
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852 |
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853 if (nargin == 1) |
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854 prompt = args(0).xstring_value ("yes_or_no: PROMPT must be a string"); |
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855 |
21127
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Rik <rik@octave.org>
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diff
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|
856 return ovl (octave_yes_or_no (prompt)); |
5640 | 857 } |
858 | |
3707 | 859 octave_value |
860 do_keyboard (const octave_value_list& args) | |
861 { | |
862 octave_value retval; | |
863 | |
864 int nargin = args.length (); | |
865 | |
866 assert (nargin == 0 || nargin == 1); | |
867 | |
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|
868 octave::unwind_protect frame; |
3707 | 869 |
21748
176536b15d68
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diff
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|
870 frame.add_fcn (octave::command_history::ignore_entries, |
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|
871 octave::command_history::ignoring_entries ()); |
12989
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|
872 |
21748
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diff
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|
873 octave::command_history::ignore_entries (false); |
3707 | 874 |
10066
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parents:
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diff
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|
875 frame.protect_var (Vdebugging); |
7752
40c428ea3408
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|
876 |
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12df7854fa7c
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|
877 frame.add_fcn (octave_call_stack::restore_frame, |
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Jaroslav Hajek <highegg@gmail.com>
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|
878 octave_call_stack::current_frame ()); |
3707 | 879 |
17787
175b392e91fe
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Rik <rik@octave.org>
parents:
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880 // FIXME: probably we just want to print one line, not the |
9484
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881 // entire statement, which might span many lines... |
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|
882 // |
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|
883 // tree_print_code tpc (octave_stdout); |
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884 // stmt.accept (tpc); |
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|
885 |
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diff
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|
886 Vdebugging = true; |
3707 | 887 |
7787
6b521b1e3631
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David Bateman <dbateman@free.fr>
parents:
7758
diff
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|
888 std::string prompt = "debug> "; |
6b521b1e3631
Add dbquit and make dbstep compatible. Use parser in debug mode to handle multi-line input
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parents:
7758
diff
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|
889 if (nargin > 0) |
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David Bateman <dbateman@free.fr>
parents:
7758
diff
changeset
|
890 prompt = args(0).string_value (); |
4233 | 891 |
20555
f90c8372b7ba
eliminate many more simple uses of error_state
John W. Eaton <jwe@octave.org>
parents:
20239
diff
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|
892 get_debug_input (prompt); |
3707 | 893 |
894 return retval; | |
895 } | |
896 | |
1957 | 897 DEFUN (keyboard, args, , |
21966
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|
898 doc: /* -*- texinfo -*- |
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diff
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|
899 @deftypefn {} {} keyboard () |
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|
900 @deftypefnx {} {} keyboard ("@var{prompt}") |
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901 Stop m-file execution and enter debug mode. |
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diff
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|
902 |
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diff
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|
903 When the @code{keyboard} function is executed, Octave prints a prompt and |
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parents:
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diff
changeset
|
904 waits for user input. The input strings are then evaluated and the results |
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parents:
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diff
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|
905 are printed. This makes it possible to examine the values of variables |
112b20240c87
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diff
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|
906 within a function, and to assign new values if necessary. To leave the |
112b20240c87
move docstrings in C++ files out of C strings and into comments
John W. Eaton <jwe@octave.org>
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21920
diff
changeset
|
907 prompt and return to normal execution type @samp{return} or @samp{dbcont}. |
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diff
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|
908 The @code{keyboard} function does not return an exit status. |
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diff
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|
909 |
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diff
changeset
|
910 If @code{keyboard} is invoked without arguments, a default prompt of |
112b20240c87
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diff
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|
911 @samp{debug> } is used. |
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diff
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|
912 @seealso{dbstop, dbcont, dbquit} |
112b20240c87
move docstrings in C++ files out of C strings and into comments
John W. Eaton <jwe@octave.org>
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diff
changeset
|
913 @end deftypefn */) |
529 | 914 { |
20819
f428cbe7576f
eliminate unnecessary uses of nargin
John W. Eaton <jwe@octave.org>
parents:
20817
diff
changeset
|
915 if (args.length () > 1) |
20801
a542a9bf177e
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John W. Eaton <jwe@octave.org>
parents:
20756
diff
changeset
|
916 print_usage (); |
10186
095a1e670e68
make dbstep work with keyboard function
John W. Eaton <jwe@octave.org>
parents:
10182
diff
changeset
|
917 |
21743
f4d7d0eb5b0c
use namespace for unwind_protect class
John W. Eaton <jwe@octave.org>
parents:
21730
diff
changeset
|
918 octave::unwind_protect frame; |
9483
25c2e92ee03c
correctly skip frame assigned to keyboard function
John W. Eaton <jwe@octave.org>
parents:
9482
diff
changeset
|
919 |
20801
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John W. Eaton <jwe@octave.org>
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diff
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|
920 frame.add_fcn (octave_call_stack::restore_frame, |
a542a9bf177e
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John W. Eaton <jwe@octave.org>
parents:
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diff
changeset
|
921 octave_call_stack::current_frame ()); |
9483
25c2e92ee03c
correctly skip frame assigned to keyboard function
John W. Eaton <jwe@octave.org>
parents:
9482
diff
changeset
|
922 |
20801
a542a9bf177e
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John W. Eaton <jwe@octave.org>
parents:
20756
diff
changeset
|
923 // Skip the frame assigned to the keyboard function. |
a542a9bf177e
eliminate return statements after calls to print_usage
John W. Eaton <jwe@octave.org>
parents:
20756
diff
changeset
|
924 octave_call_stack::goto_frame_relative (0); |
10186
095a1e670e68
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parents:
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diff
changeset
|
925 |
20801
a542a9bf177e
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John W. Eaton <jwe@octave.org>
parents:
20756
diff
changeset
|
926 tree_evaluator::debug_mode = true; |
a542a9bf177e
eliminate return statements after calls to print_usage
John W. Eaton <jwe@octave.org>
parents:
20756
diff
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|
927 tree_evaluator::quiet_breakpoint_flag = false; |
a542a9bf177e
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John W. Eaton <jwe@octave.org>
parents:
20756
diff
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|
928 |
a542a9bf177e
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John W. Eaton <jwe@octave.org>
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20756
diff
changeset
|
929 tree_evaluator::current_frame = octave_call_stack::current_frame (); |
a542a9bf177e
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John W. Eaton <jwe@octave.org>
parents:
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diff
changeset
|
930 |
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John W. Eaton <jwe@octave.org>
parents:
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diff
changeset
|
931 do_keyboard (args); |
529 | 932 |
20941
a4f5da7c5463
maint: Replace "octave_value_list ()" with "ovl ()".
Rik <rik@octave.org>
parents:
20940
diff
changeset
|
933 return ovl (); |
529 | 934 } |
935 | |
8746
5dd06f19e9be
handle commands in the lexer
John W. Eaton <jwe@octave.org>
parents:
8658
diff
changeset
|
936 DEFUN (echo, args, , |
21966
112b20240c87
move docstrings in C++ files out of C strings and into comments
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21920
diff
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|
937 doc: /* -*- texinfo -*- |
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diff
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|
938 @deftypefn {} {} echo |
112b20240c87
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John W. Eaton <jwe@octave.org>
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diff
changeset
|
939 @deftypefnx {} {} echo on |
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diff
changeset
|
940 @deftypefnx {} {} echo off |
112b20240c87
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diff
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|
941 @deftypefnx {} {} echo on all |
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move docstrings in C++ files out of C strings and into comments
John W. Eaton <jwe@octave.org>
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diff
changeset
|
942 @deftypefnx {} {} echo off all |
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move docstrings in C++ files out of C strings and into comments
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diff
changeset
|
943 Control whether commands are displayed as they are executed. |
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parents:
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diff
changeset
|
944 |
112b20240c87
move docstrings in C++ files out of C strings and into comments
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parents:
21920
diff
changeset
|
945 Valid options are: |
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move docstrings in C++ files out of C strings and into comments
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parents:
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diff
changeset
|
946 |
112b20240c87
move docstrings in C++ files out of C strings and into comments
John W. Eaton <jwe@octave.org>
parents:
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diff
changeset
|
947 @table @code |
112b20240c87
move docstrings in C++ files out of C strings and into comments
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parents:
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diff
changeset
|
948 @item on |
112b20240c87
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diff
changeset
|
949 Enable echoing of commands as they are executed in script files. |
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move docstrings in C++ files out of C strings and into comments
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parents:
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diff
changeset
|
950 |
112b20240c87
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parents:
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diff
changeset
|
951 @item off |
112b20240c87
move docstrings in C++ files out of C strings and into comments
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diff
changeset
|
952 Disable echoing of commands as they are executed in script files. |
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move docstrings in C++ files out of C strings and into comments
John W. Eaton <jwe@octave.org>
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diff
changeset
|
953 |
112b20240c87
move docstrings in C++ files out of C strings and into comments
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parents:
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diff
changeset
|
954 @item on all |
112b20240c87
move docstrings in C++ files out of C strings and into comments
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diff
changeset
|
955 Enable echoing of commands as they are executed in script files and |
112b20240c87
move docstrings in C++ files out of C strings and into comments
John W. Eaton <jwe@octave.org>
parents:
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diff
changeset
|
956 functions. |
112b20240c87
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diff
changeset
|
957 |
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diff
changeset
|
958 @item off all |
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diff
changeset
|
959 Disable echoing of commands as they are executed in script files and |
112b20240c87
move docstrings in C++ files out of C strings and into comments
John W. Eaton <jwe@octave.org>
parents:
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diff
changeset
|
960 functions. |
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John W. Eaton <jwe@octave.org>
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changeset
|
961 @end table |
112b20240c87
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parents:
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diff
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|
962 |
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move docstrings in C++ files out of C strings and into comments
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diff
changeset
|
963 @noindent |
112b20240c87
move docstrings in C++ files out of C strings and into comments
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diff
changeset
|
964 With no arguments, @code{echo} toggles the current echo state. |
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move docstrings in C++ files out of C strings and into comments
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parents:
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diff
changeset
|
965 @end deftypefn */) |
1588 | 966 { |
20996 | 967 string_vector argv = args.make_argv (); |
1755 | 968 |
20819
f428cbe7576f
eliminate unnecessary uses of nargin
John W. Eaton <jwe@octave.org>
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20817
diff
changeset
|
969 switch (args.length ()) |
1588 | 970 { |
20817
3d551b2ae928
Use variable name nargin consistently in C++ code.
Rik <rik@octave.org>
parents:
20801
diff
changeset
|
971 case 0: |
1588 | 972 { |
10315
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untabify src C++ source files
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diff
changeset
|
973 if ((Vecho_executing_commands & ECHO_SCRIPTS) |
57a59eae83cc
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|
974 || (Vecho_executing_commands & ECHO_FUNCTIONS)) |
57a59eae83cc
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|
975 Vecho_executing_commands = ECHO_OFF; |
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|
976 else |
57a59eae83cc
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changeset
|
977 Vecho_executing_commands = ECHO_SCRIPTS; |
1588 | 978 } |
979 break; | |
980 | |
20817
3d551b2ae928
Use variable name nargin consistently in C++ code.
Rik <rik@octave.org>
parents:
20801
diff
changeset
|
981 case 1: |
1588 | 982 { |
20939
b17fda023ca6
maint: Use new C++ archetype in more files.
Rik <rik@octave.org>
parents:
20853
diff
changeset
|
983 std::string arg = argv[0]; |
1755 | 984 |
10315
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|
985 if (arg == "on") |
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|
986 Vecho_executing_commands = ECHO_SCRIPTS; |
57a59eae83cc
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diff
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|
987 else if (arg == "off") |
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|
988 Vecho_executing_commands = ECHO_OFF; |
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diff
changeset
|
989 else |
57a59eae83cc
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John W. Eaton <jwe@octave.org>
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10186
diff
changeset
|
990 print_usage (); |
1588 | 991 } |
992 break; | |
993 | |
20817
3d551b2ae928
Use variable name nargin consistently in C++ code.
Rik <rik@octave.org>
parents:
20801
diff
changeset
|
994 case 2: |
1588 | 995 { |
20939
b17fda023ca6
maint: Use new C++ archetype in more files.
Rik <rik@octave.org>
parents:
20853
diff
changeset
|
996 std::string arg = argv[0]; |
1755 | 997 |
20939
b17fda023ca6
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Rik <rik@octave.org>
parents:
20853
diff
changeset
|
998 if (arg == "on" && argv[1] == "all") |
10315
57a59eae83cc
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|
999 { |
57a59eae83cc
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diff
changeset
|
1000 int tmp = (ECHO_SCRIPTS | ECHO_FUNCTIONS); |
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untabify src C++ source files
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changeset
|
1001 Vecho_executing_commands = tmp; |
57a59eae83cc
untabify src C++ source files
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diff
changeset
|
1002 } |
20939
b17fda023ca6
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Rik <rik@octave.org>
parents:
20853
diff
changeset
|
1003 else if (arg == "off" && argv[1] == "all") |
10315
57a59eae83cc
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John W. Eaton <jwe@octave.org>
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diff
changeset
|
1004 Vecho_executing_commands = ECHO_OFF; |
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1005 else |
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1006 print_usage (); |
1588 | 1007 } |
1008 break; | |
1009 | |
1010 default: | |
5823 | 1011 print_usage (); |
1588 | 1012 break; |
1013 } | |
1014 | |
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Rik <rik@octave.org>
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|
1015 return ovl (); |
1588 | 1016 } |
1017 | |
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|
1018 /* |
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1019 %!test |
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1020 %! state = echo_executing_commands (); |
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1021 %! unwind_protect |
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1022 %! echo (); |
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|
1023 %! s1 = echo_executing_commands (); |
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1024 %! assert (s1 != state); |
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1025 %! echo (); |
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|
1026 %! s2 = echo_executing_commands (); |
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|
1027 %! assert (s2 != s1); |
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1028 %! unwind_protect_cleanup |
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diff
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|
1029 %! echo_executing_commands (state); |
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1030 %! end_unwind_protect |
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|
1031 |
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|
1032 %!test |
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|
1033 %! state = echo_executing_commands (); |
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1034 %! unwind_protect |
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|
1035 %! echo ("off"); |
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|
1036 %! assert (echo_executing_commands () == 0); |
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1037 %! echo ("on"); |
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|
1038 %! assert (echo_executing_commands () != 0); |
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1039 %! echo ("off"); |
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1040 %! assert (echo_executing_commands () == 0); |
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1041 %! unwind_protect_cleanup |
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1042 %! echo_executing_commands (state); |
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1043 %! end_unwind_protect |
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|
1044 |
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|
1045 %!#test # FIXME: This passes, but produces a lot of onscreen output |
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1046 %! state = echo_executing_commands (); |
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1047 %! unwind_protect |
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1048 %! echo ("on", "all"); |
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1049 %! assert (echo_executing_commands () != 0); |
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1050 %! echo ("off", "all"); |
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1051 %! assert (echo_executing_commands () == 0); |
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1052 %! unwind_protect_cleanup |
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1053 %! echo_executing_commands (state); |
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1054 %! end_unwind_protect |
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1055 |
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1056 %!error echo ([]) |
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1057 %!error echo (0) |
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1058 %!error echo ("") |
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1059 %!error echo ("Octave") |
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1060 %!error echo ("off", "invalid") |
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1061 %!error echo ("on", "invalid") |
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1062 %!error echo ("on", "all", "all") |
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1063 */ |
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1064 |
18765
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|
1065 DEFUN (__echostate__, , , |
21966
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1066 doc: /* -*- texinfo -*- |
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1067 @deftypefn {} {@var{state} =} __echostate__ () |
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1068 Undocumented internal function |
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1069 @end deftypefn */) |
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1070 { |
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1071 return ovl (Vecho_executing_commands == ECHO_SCRIPTS); |
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1072 } |
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1073 |
2234 | 1074 DEFUN (completion_matches, args, nargout, |
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1075 doc: /* -*- texinfo -*- |
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1076 @deftypefn {} {} completion_matches (@var{hint}) |
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1077 Generate possible completions given @var{hint}. |
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1078 |
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1079 This function is provided for the benefit of programs like Emacs which |
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1080 might be controlling Octave and handling user input. The current |
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1081 command number is not incremented when this function is called. This is |
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1082 a feature, not a bug. |
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1083 @end deftypefn */) |
2234 | 1084 { |
20819
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1085 if (args.length () != 1) |
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1086 print_usage (); |
2234 | 1087 |
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1088 octave_value retval; |
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1089 |
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1090 std::string hint = args(0).string_value (); |
2234 | 1091 |
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1092 int n = 32; |
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1093 |
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1094 string_vector list (n); |
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1095 |
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1096 int k = 0; |
2234 | 1097 |
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1098 for (;;) |
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1099 { |
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1100 std::string cmd = generate_completion (hint, k); |
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1101 |
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1102 if (! cmd.empty ()) |
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1103 { |
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1104 if (k == n) |
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1105 { |
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1106 n *= 2; |
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1107 list.resize (n); |
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1108 } |
2234 | 1109 |
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1110 list[k++] = cmd; |
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1111 } |
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1112 else |
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1113 { |
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1114 list.resize (k); |
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1115 break; |
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1116 } |
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1117 } |
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1118 |
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1119 if (nargout > 0) |
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1120 { |
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1121 if (! list.empty ()) |
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1122 retval = list; |
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1123 else |
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1124 retval = ""; |
2234 | 1125 } |
1126 else | |
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1127 { |
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1128 // We don't use string_vector::list_in_columns here |
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1129 // because it will be easier for Emacs if the names |
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1130 // appear in a single column. |
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1131 |
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1132 int len = list.numel (); |
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1133 |
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1134 for (int i = 0; i < len; i++) |
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1135 octave_stdout << list[i] << "\n"; |
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1136 } |
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1137 |
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1138 octave_completion_matches_called = true; |
2234 | 1139 |
1140 return retval; | |
1141 } | |
1142 | |
20239
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1143 /* |
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1144 %!assert (ischar (completion_matches (""))) |
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1145 %!assert (ischar (completion_matches ("a"))) |
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1146 %!assert (ischar (completion_matches (" "))) |
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1147 %!assert (isempty (completion_matches (" "))) |
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1148 %!assert (any (strcmp ("abs", deblank (cellstr (completion_matches ("")))))) |
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1149 %!assert (any (strcmp ("abs", deblank (cellstr (completion_matches ("a")))))) |
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1150 %!assert (any (strcmp ("abs", deblank (cellstr (completion_matches ("ab")))))) |
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1151 %!assert (any (strcmp ("abs", deblank (cellstr (completion_matches ("abs")))))) |
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1152 %!assert (! any (strcmp ("abs", deblank (cellstr (completion_matches ("absa")))))) |
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1153 |
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|
1154 %!error completion_matches () |
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1155 %!error completion_matches (1, 2) |
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1156 */ |
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1157 |
16879
cc3743a91652
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|
1158 DEFUN (readline_read_init_file, args, , |
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1159 doc: /* -*- texinfo -*- |
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1160 @deftypefn {} {} readline_read_init_file (@var{file}) |
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1161 Read the readline library initialization file @var{file}. |
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1162 |
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1163 If @var{file} is omitted, read the default initialization file |
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1164 (normally @file{~/.inputrc}). |
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1165 |
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1166 @xref{Readline Init File, , , readline, GNU Readline Library}, |
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1167 for details. |
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1168 @seealso{readline_re_read_init_file} |
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1169 @end deftypefn */) |
3189 | 1170 { |
1171 int nargin = args.length (); | |
1172 | |
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1173 if (nargin > 1) |
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1174 print_usage (); |
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1175 |
3189 | 1176 if (nargin == 0) |
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1177 octave::command_editor::read_init_file (); |
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1178 else |
3189 | 1179 { |
5872 | 1180 std::string file = args(0).string_value (); |
3189 | 1181 |
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1182 octave::command_editor::read_init_file (file); |
3189 | 1183 } |
1184 | |
20941
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1185 return ovl (); |
3189 | 1186 } |
1187 | |
16880
1aebb613a5ac
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1188 DEFUN (readline_re_read_init_file, args, , |
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1189 doc: /* -*- texinfo -*- |
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1190 @deftypefn {} {} readline_re_read_init_file () |
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1191 Re-read the last readline library initialization file that was read. |
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1192 |
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1193 @xref{Readline Init File, , , readline, GNU Readline Library}, |
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1194 for details. |
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1195 @seealso{readline_read_init_file} |
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1196 @end deftypefn */) |
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1197 { |
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1198 if (args.length () != 0) |
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1199 print_usage (); |
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1200 |
21748
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1201 octave::command_editor::re_read_init_file (); |
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1202 |
20941
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|
1203 return ovl (); |
7758
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1204 } |
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1205 |
16349
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|
1206 static int |
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1207 internal_input_event_hook_fcn (void) |
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1208 { |
16378
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1209 input_event_hook_functions.run (); |
16349
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1210 |
16378
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1211 if (input_event_hook_functions.empty ()) |
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1212 octave::command_editor::remove_event_hook (internal_input_event_hook_fcn); |
16152
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* input.cc (input_event_hook): Return 0.
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|
1213 |
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1214 return 0; |
3498 | 1215 } |
1216 | |
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1217 DEFUN (add_input_event_hook, args, , |
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1218 doc: /* -*- texinfo -*- |
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1219 @deftypefn {} {@var{id} =} add_input_event_hook (@var{fcn}) |
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1220 @deftypefnx {} {@var{id} =} add_input_event_hook (@var{fcn}, @var{data}) |
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1221 Add the named function or function handle @var{fcn} to the list of functions |
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1222 to call periodically when Octave is waiting for input. |
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1223 |
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1224 The function should have the form |
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1225 |
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1226 @example |
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1227 @var{fcn} (@var{data}) |
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1228 @end example |
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1229 |
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1230 If @var{data} is omitted, Octave calls the function without any arguments. |
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1231 |
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1232 The returned identifier may be used to remove the function handle from the |
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1233 list of input hook functions. |
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1234 @seealso{remove_input_event_hook} |
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1235 @end deftypefn */) |
3498 | 1236 { |
1237 int nargin = args.length (); | |
1238 | |
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1239 if (nargin < 1 || nargin > 2) |
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1240 print_usage (); |
3498 | 1241 |
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1242 octave_value user_data; |
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1243 |
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1244 if (nargin == 2) |
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1245 user_data = args(1); |
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1246 |
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1247 hook_function hook_fcn (args(0), user_data); |
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1248 |
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1249 if (input_event_hook_functions.empty ()) |
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1250 octave::command_editor::add_event_hook (internal_input_event_hook_fcn); |
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1251 |
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1252 input_event_hook_functions.insert (hook_fcn.id (), hook_fcn); |
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1253 |
21127
df7891224709
maint: Use "return ovl (...)" in DEFUN macros.
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1254 return ovl (hook_fcn.id ()); |
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1255 } |
3498 | 1256 |
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1257 DEFUN (remove_input_event_hook, args, , |
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1258 doc: /* -*- texinfo -*- |
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1259 @deftypefn {} {} remove_input_event_hook (@var{name}) |
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1260 @deftypefnx {} {} remove_input_event_hook (@var{fcn_id}) |
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1261 Remove the named function or function handle with the given identifier |
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1262 from the list of functions to call periodically when Octave is waiting |
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1263 for input. |
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1264 @seealso{add_input_event_hook} |
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1265 @end deftypefn */) |
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1266 { |
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1267 int nargin = args.length (); |
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1268 |
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1269 if (nargin < 1 || nargin > 2) |
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1270 print_usage (); |
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1271 |
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1272 std::string hook_fcn_id = args(0).string_value ("remove_input_event_hook: argument not valid as a hook function name or id"); |
3498 | 1273 |
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1274 bool warn = (nargin < 2); |
3498 | 1275 |
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1276 hook_function_list::iterator p |
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1277 = input_event_hook_functions.find (hook_fcn_id); |
3498 | 1278 |
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1279 if (p != input_event_hook_functions.end ()) |
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1280 input_event_hook_functions.erase (p); |
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1281 else if (warn) |
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1282 warning ("remove_input_event_hook: %s not found in list", |
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1283 hook_fcn_id.c_str ()); |
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1284 |
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1285 if (input_event_hook_functions.empty ()) |
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1286 octave::command_editor::remove_event_hook (internal_input_event_hook_fcn); |
3498 | 1287 |
20941
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1288 return ovl (); |
3498 | 1289 } |
1290 | |
5794 | 1291 DEFUN (PS1, args, nargout, |
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1292 doc: /* -*- texinfo -*- |
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1293 @deftypefn {} {@var{val} =} PS1 () |
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1294 @deftypefnx {} {@var{old_val} =} PS1 (@var{new_val}) |
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1295 @deftypefnx {} {} PS1 (@var{new_val}, "local") |
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1296 Query or set the primary prompt string. |
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1297 |
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1298 When executing interactively, Octave displays the primary prompt when it is |
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1299 ready to read a command. |
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1300 |
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1301 The default value of the primary prompt string is @qcode{"octave:\#> "}. |
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1302 To change it, use a command like |
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1303 |
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1304 @example |
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1305 PS1 ("\\u@@\\H> ") |
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1306 @end example |
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1307 |
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1308 @noindent |
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1309 which will result in the prompt @samp{boris@@kremvax> } for the user |
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1310 @samp{boris} logged in on the host @samp{kremvax.kgb.su}. Note that two |
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1311 backslashes are required to enter a backslash into a double-quoted |
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1312 character string. @xref{Strings}. |
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1313 |
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1314 You can also use ANSI escape sequences if your terminal supports them. |
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1315 This can be useful for coloring the prompt. For example, |
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1316 |
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1317 @example |
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1318 PS1 ('\[\033[01;31m\]\s:\#> \[\033[0m\]') |
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1319 @end example |
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1320 |
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1321 @noindent |
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1322 will give the default Octave prompt a red coloring. |
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1323 |
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1324 When called from inside a function with the @qcode{"local"} option, the |
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1325 variable is changed locally for the function and any subroutines it calls. |
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1326 The original variable value is restored when exiting the function. |
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1327 @seealso{PS2, PS4} |
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1328 @end deftypefn */) |
5794 | 1329 { |
1330 return SET_INTERNAL_VARIABLE (PS1); | |
1331 } | |
2181 | 1332 |
5794 | 1333 DEFUN (PS2, args, nargout, |
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1334 doc: /* -*- texinfo -*- |
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1335 @deftypefn {} {@var{val} =} PS2 () |
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1336 @deftypefnx {} {@var{old_val} =} PS2 (@var{new_val}) |
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1337 @deftypefnx {} {} PS2 (@var{new_val}, "local") |
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1338 Query or set the secondary prompt string. |
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1339 |
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1340 The secondary prompt is printed when Octave is expecting additional input to |
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1341 complete a command. For example, if you are typing a @code{for} loop that |
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1342 spans several lines, Octave will print the secondary prompt at the beginning |
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1343 of each line after the first. The default value of the secondary prompt |
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1344 string is @qcode{"> "}. |
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1345 |
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1346 When called from inside a function with the @qcode{"local"} option, the |
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1347 variable is changed locally for the function and any subroutines it calls. |
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1348 The original variable value is restored when exiting the function. |
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1349 @seealso{PS1, PS4} |
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1350 @end deftypefn */) |
5794 | 1351 { |
1352 return SET_INTERNAL_VARIABLE (PS2); | |
1353 } | |
2181 | 1354 |
5794 | 1355 DEFUN (PS4, args, nargout, |
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1356 doc: /* -*- texinfo -*- |
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1357 @deftypefn {} {@var{val} =} PS4 () |
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1358 @deftypefnx {} {@var{old_val} =} PS4 (@var{new_val}) |
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1359 @deftypefnx {} {} PS4 (@var{new_val}, "local") |
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1360 Query or set the character string used to prefix output produced |
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1361 when echoing commands is enabled. |
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1362 |
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1363 The default value is @qcode{"+ "}. |
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1364 @xref{Diary and Echo Commands}, for a description of echoing commands. |
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1365 |
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1366 When called from inside a function with the @qcode{"local"} option, the |
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1367 variable is changed locally for the function and any subroutines it calls. |
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1368 The original variable value is restored when exiting the function. |
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1369 @seealso{echo, echo_executing_commands, PS1, PS2} |
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1370 @end deftypefn */) |
5794 | 1371 { |
1372 return SET_INTERNAL_VARIABLE (PS4); | |
1373 } | |
2181 | 1374 |
5794 | 1375 DEFUN (completion_append_char, args, nargout, |
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1376 doc: /* -*- texinfo -*- |
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1377 @deftypefn {} {@var{val} =} completion_append_char () |
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1378 @deftypefnx {} {@var{old_val} =} completion_append_char (@var{new_val}) |
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1379 @deftypefnx {} {} completion_append_char (@var{new_val}, "local") |
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1380 Query or set the internal character variable that is appended to |
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1381 successful command-line completion attempts. |
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1382 |
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1383 The default value is @qcode{" "} (a single space). |
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1384 |
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1385 When called from inside a function with the @qcode{"local"} option, the |
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1386 variable is changed locally for the function and any subroutines it calls. |
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1387 The original variable value is restored when exiting the function. |
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1388 @end deftypefn */) |
5794 | 1389 { |
1390 return SET_INTERNAL_VARIABLE (completion_append_char); | |
1391 } | |
3019 | 1392 |
5794 | 1393 DEFUN (echo_executing_commands, args, nargout, |
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1394 doc: /* -*- texinfo -*- |
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1395 @deftypefn {} {@var{val} =} echo_executing_commands () |
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1396 @deftypefnx {} {@var{old_val} =} echo_executing_commands (@var{new_val}) |
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1397 @deftypefnx {} {} echo_executing_commands (@var{new_val}, "local") |
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1398 Query or set the internal variable that controls the echo state. |
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1399 |
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1400 It may be the sum of the following values: |
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1401 |
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1402 @table @asis |
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1403 @item 1 |
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1404 Echo commands read from script files. |
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1405 |
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1406 @item 2 |
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1407 Echo commands from functions. |
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1408 |
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1409 @item 4 |
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1410 Echo commands read from command line. |
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1411 @end table |
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1412 |
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1413 More than one state can be active at once. For example, a value of 3 is |
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1414 equivalent to the command @kbd{echo on all}. |
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1415 |
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1416 The value of @code{echo_executing_commands} may be set by the @kbd{echo} |
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1417 command or the command line option @option{--echo-commands}. |
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1418 |
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1419 When called from inside a function with the @qcode{"local"} option, the |
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1420 variable is changed locally for the function and any subroutines it calls. |
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1421 The original variable value is restored when exiting the function. |
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1422 @end deftypefn */) |
5794 | 1423 { |
1424 return SET_INTERNAL_VARIABLE (echo_executing_commands); | |
2181 | 1425 } |
1426 | |
6257 | 1427 DEFUN (__request_drawnow__, args, , |
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1428 doc: /* -*- texinfo -*- |
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1429 @deftypefn {} {} __request_drawnow__ () |
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1430 @deftypefnx {} {} __request_drawnow__ (@var{flag}) |
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1431 Undocumented internal function. |
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1432 @end deftypefn */) |
6257 | 1433 { |
1434 int nargin = args.length (); | |
1435 | |
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1436 if (nargin > 1) |
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1437 print_usage (); |
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1438 |
6257 | 1439 if (nargin == 0) |
1440 Vdrawnow_requested = true; | |
20801
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1441 else |
6257 | 1442 Vdrawnow_requested = args(0).bool_value (); |
1443 | |
20941
a4f5da7c5463
maint: Replace "octave_value_list ()" with "ovl ()".
Rik <rik@octave.org>
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1444 return ovl (); |
6257 | 1445 } |
1446 | |
7294 | 1447 DEFUN (__gud_mode__, args, , |
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1448 doc: /* -*- texinfo -*- |
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1449 @deftypefn {} {} __gud_mode__ () |
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1450 Undocumented internal function. |
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1451 @end deftypefn */) |
7294 | 1452 { |
1453 int nargin = args.length (); | |
1454 | |
20801
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1455 if (nargin > 1) |
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1456 print_usage (); |
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1457 |
20939
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|
1458 octave_value_list retval; |
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1459 |
7294 | 1460 if (nargin == 0) |
20939
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|
1461 retval = ovl (Vgud_mode); |
20801
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1462 else |
7294 | 1463 Vgud_mode = args(0).bool_value (); |
1464 | |
21006
ea779f11deae
strip trailing whitespace from files
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|
1465 return retval; |
7294 | 1466 } |
1467 | |
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1468 DEFUN (filemarker, args, nargout, |
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1469 doc: /* -*- texinfo -*- |
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1470 @deftypefn {} {@var{val} =} filemarker () |
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1471 @deftypefnx {} {@var{old_val} =} filemarker (@var{new_val}) |
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1472 @deftypefnx {} {} filemarker (@var{new_val}, "local") |
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1473 Query or set the character used to separate the filename from the |
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1474 subfunction names contained within the file. |
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1475 |
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1476 By default this is the character @samp{>}. |
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1477 This can be used in a generic manner to interact with subfunctions. |
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1478 For example, |
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1479 |
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1480 @example |
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1481 help (["myfunc", filemarker, "mysubfunc"]) |
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1482 @end example |
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1483 |
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1484 @noindent |
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1485 returns the help string associated with the subfunction @code{mysubfunc} |
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1486 located in the file @file{myfunc.m}. |
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1487 |
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1488 @code{filemarker} is also useful during debugging for placing breakpoints |
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1489 within subfunctions or nested functions. |
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1490 For example, |
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1491 |
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1492 @example |
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1493 dbstop (["myfunc", filemarker, "mysubfunc"]) |
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1494 @end example |
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1495 |
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1496 @noindent |
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1497 will set a breakpoint at the first line of the subfunction @code{mysubfunc}. |
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1498 |
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1499 When called from inside a function with the @qcode{"local"} option, the |
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1500 variable is changed locally for the function and any subroutines it calls. |
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1501 The original variable value is restored when exiting the function. |
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1502 @end deftypefn */) |
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1503 { |
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1504 char tmp = Vfilemarker; |
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1505 octave_value retval = SET_INTERNAL_VARIABLE (filemarker); |
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1506 |
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1507 // The character passed must not be a legal character for a function name |
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1508 if (::isalnum (Vfilemarker) || Vfilemarker == '_') |
7818
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1509 { |
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1510 Vfilemarker = tmp; |
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1511 error ("filemarker: character can not be a valid character for a function name"); |
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1512 } |
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1513 |
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1514 return retval; |
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1515 } |