Mercurial > octave
annotate liboctave/util/cmd-edit.h @ 19378:f7ccd02bc060 gui-release
provide access to the readline variable rl_erase_empty_line
* cmd-edit.h, cmd-edit.cc (command_editor::erase_empty_line,
command_editor::do_erase_empty_line,
gnu_readline::do_erase_empty_line): New functions.
* oct-rl-edit.h, oct-rl-edit.c (octave_rl_erase_empty_line):
New function.
author | John W. Eaton <jwe@octave.org> |
---|---|
date | Thu, 04 Dec 2014 15:56:49 -0500 |
parents | 735bc47d18af |
children | 5db5619fe54e |
rev | line source |
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2926 | 1 /* |
2 | |
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3 Copyright (C) 1996-2013 John W. Eaton |
2926 | 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. | |
2926 | 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/>. | |
2926 | 20 |
21 */ | |
22 | |
23 #if !defined (octave_cmd_edit_h) | |
24 #define octave_cmd_edit_h 1 | |
25 | |
26 #include <cstdio> | |
27 | |
6913 | 28 #include <set> |
2926 | 29 #include <string> |
30 | |
4604 | 31 #include "str-vec.h" |
32 | |
2926 | 33 class |
6108 | 34 OCTAVE_API |
2926 | 35 command_editor |
36 { | |
37 protected: | |
38 | |
39 command_editor (void) | |
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40 : command_number (0), interrupted (false), initial_input () { } |
2926 | 41 |
42 public: | |
43 | |
4802 | 44 typedef int (*startup_hook_fcn) (void); |
3519 | 45 |
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46 typedef int (*pre_input_hook_fcn) (void); |
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47 |
4802 | 48 typedef int (*event_hook_fcn) (void); |
2926 | 49 |
3504 | 50 typedef std::string (*completion_fcn) (const std::string&, int); |
2941 | 51 |
6979 | 52 typedef std::string (*quoting_fcn) (const std::string&, int, char); |
53 | |
54 typedef std::string (*dequoting_fcn) (const std::string&, int); | |
55 | |
56 typedef int (*char_is_quoted_fcn) (const std::string&, int); | |
57 | |
58 typedef void (*user_accept_line_fcn) (const std::string&); | |
59 | |
2926 | 60 virtual ~command_editor (void) { } |
61 | |
3504 | 62 static void set_name (const std::string& n); |
2926 | 63 |
3504 | 64 static std::string readline (const std::string& prompt); |
2926 | 65 |
3504 | 66 static std::string readline (const std::string& prompt, bool& eof); |
3219 | 67 |
2926 | 68 static void set_input_stream (FILE *f); |
69 | |
70 static FILE *get_input_stream (void); | |
71 | |
72 static void set_output_stream (FILE *f); | |
73 | |
74 static FILE *get_output_stream (void); | |
75 | |
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76 static void redisplay (void); |
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77 |
2926 | 78 static int terminal_rows (void); |
79 | |
80 static int terminal_cols (void); | |
81 | |
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82 static void clear_screen (bool skip_redisplay = false); |
2926 | 83 |
3281 | 84 static void resize_terminal (void); |
85 | |
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86 static void set_screen_size (int ht, int wd); |
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87 |
3504 | 88 static std::string decode_prompt_string (const std::string& s); |
2926 | 89 |
90 static void restore_terminal_state (void); | |
91 | |
92 static void blink_matching_paren (bool flag); | |
93 | |
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94 static bool erase_empty_line (bool flag); |
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95 |
4055 | 96 static void set_basic_word_break_characters (const std::string& s); |
3933 | 97 |
4055 | 98 static void set_completer_word_break_characters (const std::string& s); |
3933 | 99 |
3504 | 100 static void set_basic_quote_characters (const std::string& s); |
2926 | 101 |
6979 | 102 static void set_filename_quote_characters (const std::string& s); |
103 | |
104 static void set_completer_quote_characters (const std::string& s); | |
105 | |
2926 | 106 static void set_completion_append_character (char c); |
107 | |
2941 | 108 static void set_completion_function (completion_fcn f); |
109 | |
6979 | 110 static void set_quoting_function (quoting_fcn f); |
111 | |
112 static void set_dequoting_function (dequoting_fcn f); | |
113 | |
114 static void set_char_is_quoted_function (char_is_quoted_fcn f); | |
115 | |
116 static void set_user_accept_line_function (user_accept_line_fcn f); | |
117 | |
2941 | 118 static completion_fcn get_completion_function (void); |
2926 | 119 |
6979 | 120 static quoting_fcn get_quoting_function (void); |
121 | |
122 static dequoting_fcn get_dequoting_function (void); | |
123 | |
124 static char_is_quoted_fcn get_char_is_quoted_function (void); | |
125 | |
126 static user_accept_line_fcn get_user_accept_line_function (void); | |
127 | |
4604 | 128 static string_vector generate_filename_completions (const std::string& text); |
129 | |
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130 static std::string get_line_buffer (void); |
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131 |
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132 static std::string get_current_line (void); |
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133 |
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134 static void replace_line (const std::string& text, bool clear_undo = true); |
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135 |
3504 | 136 static void insert_text (const std::string& text); |
2926 | 137 |
138 static void newline (void); | |
139 | |
6979 | 140 static void accept_line (void); |
141 | |
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142 static bool undo (void); |
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143 |
2926 | 144 static void clear_undo_list (void); |
145 | |
6913 | 146 static void add_startup_hook (startup_hook_fcn f); |
2926 | 147 |
6913 | 148 static void remove_startup_hook (startup_hook_fcn f); |
2926 | 149 |
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150 static void add_pre_input_hook (pre_input_hook_fcn f); |
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151 |
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152 static void remove_pre_input_hook (pre_input_hook_fcn f); |
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153 |
6913 | 154 static void add_event_hook (event_hook_fcn f); |
3215 | 155 |
6913 | 156 static void remove_event_hook (event_hook_fcn f); |
3215 | 157 |
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158 static void run_event_hooks (void); |
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159 |
3504 | 160 static void read_init_file (const std::string& file = std::string ()); |
3189 | 161 |
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162 static void re_read_init_file (void); |
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163 |
4143 | 164 static bool filename_completion_desired (bool); |
165 | |
6979 | 166 static bool filename_quoting_desired (bool); |
167 | |
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168 static bool prefer_env_winsize (bool); |
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169 |
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170 static bool interrupt (bool = true); |
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171 |
2926 | 172 static int current_command_number (void); |
173 | |
174 static void reset_current_command_number (int n); | |
175 | |
2967 | 176 static void increment_current_command_number (void); |
177 | |
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178 static void force_default_editor (void); |
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179 |
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180 static void set_initial_input (const std::string& text); |
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181 |
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182 static int insert_initial_input (void); |
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183 |
2926 | 184 private: |
185 | |
186 // No copying! | |
187 | |
188 command_editor (const command_editor&); | |
189 | |
190 command_editor& operator = (const command_editor&); | |
191 | |
192 static bool instance_ok (void); | |
193 | |
194 static void make_command_editor (void); | |
195 | |
6913 | 196 static int startup_handler (void); |
197 | |
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198 static int pre_input_handler (void); |
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199 |
6913 | 200 static int event_handler (void); |
201 | |
202 static std::set<startup_hook_fcn> startup_hook_set; | |
203 | |
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204 static std::set<pre_input_hook_fcn> pre_input_hook_set; |
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205 |
6913 | 206 static std::set<event_hook_fcn> event_hook_set; |
207 | |
208 typedef std::set<startup_hook_fcn>::iterator startup_hook_set_iterator; | |
209 typedef std::set<startup_hook_fcn>::const_iterator startup_hook_set_const_iterator; | |
210 | |
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211 typedef std::set<pre_input_hook_fcn>::iterator pre_input_hook_set_iterator; |
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212 typedef std::set<pre_input_hook_fcn>::const_iterator pre_input_hook_set_const_iterator; |
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213 |
6913 | 214 typedef std::set<event_hook_fcn>::iterator event_hook_set_iterator; |
215 typedef std::set<event_hook_fcn>::const_iterator event_hook_set_const_iterator; | |
216 | |
2926 | 217 // The real thing. |
218 static command_editor *instance; | |
219 | |
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220 static void cleanup_instance (void) { delete instance; instance = 0; } |
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221 |
2926 | 222 protected: |
223 | |
224 // To use something other than the GNU readline library, derive a new | |
225 // class from command_editor, overload these functions as | |
226 // necessary, and make instance point to the new class. | |
227 | |
3504 | 228 virtual void do_set_name (const std::string&) { } |
2926 | 229 |
3504 | 230 std::string do_readline (const std::string& prompt) |
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231 { |
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232 bool eof; |
3219 | 233 |
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234 return do_readline (prompt, eof); |
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235 } |
3219 | 236 |
3504 | 237 virtual std::string do_readline (const std::string&, bool&) = 0; |
2926 | 238 |
239 virtual void do_set_input_stream (FILE *) = 0; | |
240 | |
241 virtual FILE *do_get_input_stream (void) = 0; | |
242 | |
243 virtual void do_set_output_stream (FILE *) = 0; | |
244 | |
245 virtual FILE *do_get_output_stream (void) = 0; | |
246 | |
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247 virtual void do_redisplay (void) { } |
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248 |
2926 | 249 virtual int do_terminal_rows (void) { return 24; } |
250 | |
251 virtual int do_terminal_cols (void) { return 80; } | |
252 | |
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253 virtual void do_clear_screen (bool) { } |
2926 | 254 |
3281 | 255 virtual void do_resize_terminal (void) { } |
256 | |
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257 virtual void do_set_screen_size (int, int) { } |
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258 |
3504 | 259 virtual std::string do_decode_prompt_string (const std::string&); |
2926 | 260 |
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261 virtual std::string newline_chars (void) { return "\n"; } |
2926 | 262 |
263 virtual void do_restore_terminal_state (void) { } | |
264 | |
265 virtual void do_blink_matching_paren (bool) { } | |
266 | |
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267 virtual bool do_erase_empty_line (bool) { return false; } |
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268 |
3933 | 269 virtual void do_set_basic_word_break_characters (const std::string&) { } |
270 | |
271 virtual void do_set_completer_word_break_characters (const std::string&) { } | |
272 | |
3504 | 273 virtual void do_set_basic_quote_characters (const std::string&) { } |
2926 | 274 |
6979 | 275 virtual void do_set_filename_quote_characters (const std::string&) { } |
276 | |
277 virtual void do_set_completer_quote_characters (const std::string&) { } | |
278 | |
2926 | 279 virtual void do_set_completion_append_character (char) { } |
280 | |
2941 | 281 virtual void do_set_completion_function (completion_fcn) { } |
282 | |
6979 | 283 virtual void do_set_quoting_function (quoting_fcn) { } |
284 | |
285 virtual void do_set_dequoting_function (dequoting_fcn) { } | |
286 | |
287 virtual void do_set_char_is_quoted_function (char_is_quoted_fcn) { } | |
288 | |
289 virtual void do_set_user_accept_line_function (user_accept_line_fcn) { } | |
290 | |
2941 | 291 virtual completion_fcn do_get_completion_function (void) const { return 0; } |
2926 | 292 |
6979 | 293 virtual quoting_fcn do_get_quoting_function (void) const { return 0; } |
294 | |
295 virtual dequoting_fcn do_get_dequoting_function (void) const { return 0; } | |
296 | |
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297 virtual char_is_quoted_fcn do_get_char_is_quoted_function (void) const |
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298 { return 0; } |
6979 | 299 |
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300 virtual user_accept_line_fcn do_get_user_accept_line_function (void) const |
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301 { return 0; } |
6979 | 302 |
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303 virtual string_vector |
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304 do_generate_filename_completions (const std::string& text) = 0; |
4604 | 305 |
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306 virtual std::string do_get_line_buffer (void) const = 0; |
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307 |
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308 virtual std::string do_get_current_line (void) const = 0; |
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309 |
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310 virtual void do_replace_line (const std::string& text, bool clear_undo) = 0; |
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311 |
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312 virtual void do_insert_text (const std::string& text) = 0; |
2926 | 313 |
314 virtual void do_newline (void) = 0; | |
315 | |
6979 | 316 virtual void do_accept_line (void) = 0; |
317 | |
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318 virtual bool do_undo (void) { return false; } |
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319 |
2926 | 320 virtual void do_clear_undo_list (void) { } |
321 | |
6913 | 322 virtual void set_startup_hook (startup_hook_fcn) { } |
2926 | 323 |
6913 | 324 virtual void restore_startup_hook (void) { } |
2926 | 325 |
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326 virtual void set_pre_input_hook (pre_input_hook_fcn) { } |
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327 |
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328 virtual void restore_pre_input_hook (void) { } |
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329 |
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330 virtual void set_event_hook (event_hook_fcn) { } |
3215 | 331 |
6913 | 332 virtual void restore_event_hook (void) { } |
3215 | 333 |
3504 | 334 virtual void do_read_init_file (const std::string&) { } |
3189 | 335 |
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336 virtual void do_re_read_init_file (void) { } |
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337 |
4143 | 338 virtual bool do_filename_completion_desired (bool) { return false; } |
339 | |
6979 | 340 virtual bool do_filename_quoting_desired (bool) { return false; } |
341 | |
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342 virtual bool do_prefer_env_winsize (bool) { return false; } |
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343 |
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344 virtual void do_interrupt (bool) { } |
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345 |
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346 int do_insert_initial_input (void); |
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347 |
3504 | 348 int read_octal (const std::string& s); |
2926 | 349 |
350 void error (int); | |
351 | |
3504 | 352 void error (const std::string&); |
2926 | 353 |
354 // The current command number. | |
355 int command_number; | |
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356 |
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357 bool interrupted; |
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358 |
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359 std::string initial_input; |
2926 | 360 }; |
361 | |
362 #endif |