readline/readline.h

   1 /* Readline.h -- the names of functions callable from within readline. */
   2
   3 /* Copyright (C) 1987, 1989, 1992 Free Software Foundation, Inc.
   4
   5    This file is part of the GNU Readline Library, a library for
   6    reading lines of text with interactive input and history editing.
   7
   8    The GNU Readline Library is free software; you can redistribute it
   9    and/or modify it under the terms of the GNU General Public License
  10    as published by the Free Software Foundation; either version 2, or
  11    (at your option) any later version.
  12
  13    The GNU Readline Library is distributed in the hope that it will be
  14    useful, but WITHOUT ANY WARRANTY; without even the implied warranty
  15    of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16    GNU General Public License for more details.
  17
  18    The GNU General Public License is often shipped with GNU software, and
  19    is generally kept in a file called COPYING or LICENSE.  If you do not
  20    have a copy of the license, write to the Free Software Foundation,
  21    59 Temple Place, Suite 330, Boston, MA 02111 USA. */
  22
  23 #if !defined (_READLINE_H_)
  24 #define _READLINE_H_
  25
  26 #ifdef __cplusplus
  27 extern "C" {
  28 #endif
  29
  30 #if defined (READLINE_LIBRARY)
  31 #  include "rlstdc.h"
  32 #  include "rltypedefs.h"
  33 #  include "keymaps.h"
  34 #  include "tilde.h"
  35 #else
  36 #  include <readline/rlstdc.h>
  37 #  include <readline/rltypedefs.h>
  38 #  include <readline/keymaps.h>
  39 #  include <readline/tilde.h>
  40 #endif
  41
  42 /* Hex-encoded Readline version number. */
  43 #define RL_READLINE_VERSION     0x0403          /* Readline 4.3 */
  44 #define RL_VERSION_MAJOR        4
  45 #define RL_VERSION_MINOR        3
  46
  47 /* Readline data structures. */
  48
  49 /* Maintaining the state of undo.  We remember individual deletes and inserts
  50    on a chain of things to do. */
  51
  52 /* The actions that undo knows how to undo.  Notice that UNDO_DELETE means
  53    to insert some text, and UNDO_INSERT means to delete some text.   I.e.,
  54    the code tells undo what to undo, not how to undo it. */
  55 enum undo_code { UNDO_DELETE, UNDO_INSERT, UNDO_BEGIN, UNDO_END };
  56
  57 /* What an element of THE_UNDO_LIST looks like. */
  58 typedef struct undo_list {
  59   struct undo_list *next;
  60   int start, end;               /* Where the change took place. */
  61   char *text;                   /* The text to insert, if undoing a delete. */
  62   enum undo_code what;          /* Delete, Insert, Begin, End. */
  63 } UNDO_LIST;
  64
  65 /* The current undo list for RL_LINE_BUFFER. */
  66 extern UNDO_LIST *rl_undo_list;
  67
  68 /* The data structure for mapping textual names to code addresses. */
  69 typedef struct _funmap {
  70   const char *name;
  71   rl_command_func_t *function;
  72 } FUNMAP;
  73
  74 extern FUNMAP **funmap;
  75
  76 /* **************************************************************** */
  77 /*                                                                  */
  78 /*           Functions available to bind to key sequences           */
  79 /*                                                                  */
  80 /* **************************************************************** */
  81
  82 /* Bindable commands for numeric arguments. */
  83 extern int rl_digit_argument PARAMS((int, int));
  84 extern int rl_universal_argument PARAMS((int, int));
  85
  86 /* Bindable commands for moving the cursor. */
  87 extern int rl_forward_byte PARAMS((int, int));
  88 extern int rl_forward_char PARAMS((int, int));
  89 extern int rl_forward PARAMS((int, int));
  90 extern int rl_backward_byte PARAMS((int, int));
  91 extern int rl_backward_char PARAMS((int, int));
  92 extern int rl_backward PARAMS((int, int));
  93 extern int rl_beg_of_line PARAMS((int, int));
  94 extern int rl_end_of_line PARAMS((int, int));
  95 extern int rl_forward_word PARAMS((int, int));
  96 extern int rl_backward_word PARAMS((int, int));
  97 extern int rl_refresh_line PARAMS((int, int));
  98 extern int rl_clear_screen PARAMS((int, int));
  99 extern int rl_arrow_keys PARAMS((int, int));
 100
 101 /* Bindable commands for inserting and deleting text. */
 102 extern int rl_insert PARAMS((int, int));
 103 extern int rl_quoted_insert PARAMS((int, int));
 104 extern int rl_tab_insert PARAMS((int, int));
 105 extern int rl_newline PARAMS((int, int));
 106 extern int rl_do_lowercase_version PARAMS((int, int));
 107 extern int rl_rubout PARAMS((int, int));
 108 extern int rl_delete PARAMS((int, int));
 109 extern int rl_rubout_or_delete PARAMS((int, int));
 110 extern int rl_delete_horizontal_space PARAMS((int, int));
 111 extern int rl_delete_or_show_completions PARAMS((int, int));
 112 extern int rl_insert_comment PARAMS((int, int));
 113
 114 /* Bindable commands for changing case. */
 115 extern int rl_upcase_word PARAMS((int, int));
 116 extern int rl_downcase_word PARAMS((int, int));
 117 extern int rl_capitalize_word PARAMS((int, int));
 118
 119 /* Bindable commands for transposing characters and words. */
 120 extern int rl_transpose_words PARAMS((int, int));
 121 extern int rl_transpose_chars PARAMS((int, int));
 122
 123 /* Bindable commands for searching within a line. */
 124 extern int rl_char_search PARAMS((int, int));
 125 extern int rl_backward_char_search PARAMS((int, int));
 126
 127 /* Bindable commands for readline's interface to the command history. */
 128 extern int rl_beginning_of_history PARAMS((int, int));
 129 extern int rl_end_of_history PARAMS((int, int));
 130 extern int rl_get_next_history PARAMS((int, int));
 131 extern int rl_get_previous_history PARAMS((int, int));
 132
 133 /* Bindable commands for managing the mark and region. */
 134 extern int rl_set_mark PARAMS((int, int));
 135 extern int rl_exchange_point_and_mark PARAMS((int, int));
 136
 137 /* Bindable commands to set the editing mode (emacs or vi). */
 138 extern int rl_vi_editing_mode PARAMS((int, int));
 139 extern int rl_emacs_editing_mode PARAMS((int, int));
 140
 141 /* Bindable commands to change the insert mode (insert or overwrite) */
 142 extern int rl_overwrite_mode PARAMS((int, int));
 143
 144 /* Bindable commands for managing key bindings. */
 145 extern int rl_re_read_init_file PARAMS((int, int));
 146 extern int rl_dump_functions PARAMS((int, int));
 147 extern int rl_dump_macros PARAMS((int, int));
 148 extern int rl_dump_variables PARAMS((int, int));
 149
 150 /* Bindable commands for word completion. */
 151 extern int rl_complete PARAMS((int, int));
 152 extern int rl_possible_completions PARAMS((int, int));
 153 extern int rl_insert_completions PARAMS((int, int));
 154 extern int rl_menu_complete PARAMS((int, int));
 155
 156 /* Bindable commands for killing and yanking text, and managing the kill ring. */
 157 extern int rl_kill_word PARAMS((int, int));
 158 extern int rl_backward_kill_word PARAMS((int, int));
 159 extern int rl_kill_line PARAMS((int, int));
 160 extern int rl_backward_kill_line PARAMS((int, int));
 161 extern int rl_kill_full_line PARAMS((int, int));
 162 extern int rl_unix_word_rubout PARAMS((int, int));
 163 extern int rl_unix_line_discard PARAMS((int, int));
 164 extern int rl_copy_region_to_kill PARAMS((int, int));
 165 extern int rl_kill_region PARAMS((int, int));
 166 extern int rl_copy_forward_word PARAMS((int, int));
 167 extern int rl_copy_backward_word PARAMS((int, int));
 168 extern int rl_yank PARAMS((int, int));
 169 extern int rl_yank_pop PARAMS((int, int));
 170 extern int rl_yank_nth_arg PARAMS((int, int));
 171 extern int rl_yank_last_arg PARAMS((int, int));
 172 /* Not available unless __CYGWIN__ is defined. */
 173 #ifdef __CYGWIN__
 174 extern int rl_paste_from_clipboard PARAMS((int, int));
 175 #endif
 176
 177 /* Bindable commands for incremental searching. */
 178 extern int rl_reverse_search_history PARAMS((int, int));
 179 extern int rl_forward_search_history PARAMS((int, int));
 180
 181 /* Bindable keyboard macro commands. */
 182 extern int rl_start_kbd_macro PARAMS((int, int));
 183 extern int rl_end_kbd_macro PARAMS((int, int));
 184 extern int rl_call_last_kbd_macro PARAMS((int, int));
 185
 186 /* Bindable undo commands. */
 187 extern int rl_revert_line PARAMS((int, int));
 188 extern int rl_undo_command PARAMS((int, int));
 189
 190 /* Bindable tilde expansion commands. */
 191 extern int rl_tilde_expand PARAMS((int, int));
 192
 193 /* Bindable terminal control commands. */
 194 extern int rl_restart_output PARAMS((int, int));
 195 extern int rl_stop_output PARAMS((int, int));
 196
 197 /* Miscellaneous bindable commands. */
 198 extern int rl_abort PARAMS((int, int));
 199 extern int rl_tty_status PARAMS((int, int));
 200
 201 /* Bindable commands for incremental and non-incremental history searching. */
 202 extern int rl_history_search_forward PARAMS((int, int));
 203 extern int rl_history_search_backward PARAMS((int, int));
 204 extern int rl_noninc_forward_search PARAMS((int, int));
 205 extern int rl_noninc_reverse_search PARAMS((int, int));
 206 extern int rl_noninc_forward_search_again PARAMS((int, int));
 207 extern int rl_noninc_reverse_search_again PARAMS((int, int));
 208
 209 /* Bindable command used when inserting a matching close character. */
 210 extern int rl_insert_close PARAMS((int, int));
 211
 212 /* Not available unless READLINE_CALLBACKS is defined. */
 213 extern void rl_callback_handler_install PARAMS((const char *, rl_vcpfunc_t *));
 214 extern void rl_callback_read_char PARAMS((void));
 215 extern void rl_callback_handler_remove PARAMS((void));
 216
 217 /* Things for vi mode. Not available unless readline is compiled -DVI_MODE. */
 218 /* VI-mode bindable commands. */
 219 extern int rl_vi_redo PARAMS((int, int));
 220 extern int rl_vi_undo PARAMS((int, int));
 221 extern int rl_vi_yank_arg PARAMS((int, int));
 222 extern int rl_vi_fetch_history PARAMS((int, int));
 223 extern int rl_vi_search_again PARAMS((int, int));
 224 extern int rl_vi_search PARAMS((int, int));
 225 extern int rl_vi_complete PARAMS((int, int));
 226 extern int rl_vi_tilde_expand PARAMS((int, int));
 227 extern int rl_vi_prev_word PARAMS((int, int));
 228 extern int rl_vi_next_word PARAMS((int, int));
 229 extern int rl_vi_end_word PARAMS((int, int));
 230 extern int rl_vi_insert_beg PARAMS((int, int));
 231 extern int rl_vi_append_mode PARAMS((int, int));
 232 extern int rl_vi_append_eol PARAMS((int, int));
 233 extern int rl_vi_eof_maybe PARAMS((int, int));
 234 extern int rl_vi_insertion_mode PARAMS((int, int));
 235 extern int rl_vi_movement_mode PARAMS((int, int));
 236 extern int rl_vi_arg_digit PARAMS((int, int));
 237 extern int rl_vi_change_case PARAMS((int, int));
 238 extern int rl_vi_put PARAMS((int, int));
 239 extern int rl_vi_column PARAMS((int, int));
 240 extern int rl_vi_delete_to PARAMS((int, int));
 241 extern int rl_vi_change_to PARAMS((int, int));
 242 extern int rl_vi_yank_to PARAMS((int, int));
 243 extern int rl_vi_delete PARAMS((int, int));
 244 extern int rl_vi_back_to_indent PARAMS((int, int));
 245 extern int rl_vi_first_print PARAMS((int, int));
 246 extern int rl_vi_char_search PARAMS((int, int));
 247 extern int rl_vi_match PARAMS((int, int));
 248 extern int rl_vi_change_char PARAMS((int, int));
 249 extern int rl_vi_subst PARAMS((int, int));
 250 extern int rl_vi_overstrike PARAMS((int, int));
 251 extern int rl_vi_overstrike_delete PARAMS((int, int));
 252 extern int rl_vi_replace PARAMS((int, int));
 253 extern int rl_vi_set_mark PARAMS((int, int));
 254 extern int rl_vi_goto_mark PARAMS((int, int));
 255
 256 /* VI-mode utility functions. */
 257 extern int rl_vi_check PARAMS((void));
 258 extern int rl_vi_domove PARAMS((int, int *));
 259 extern int rl_vi_bracktype PARAMS((int));
 260
 261 /* VI-mode pseudo-bindable commands, used as utility functions. */
 262 extern int rl_vi_fWord PARAMS((int, int));
 263 extern int rl_vi_bWord PARAMS((int, int));
 264 extern int rl_vi_eWord PARAMS((int, int));
 265 extern int rl_vi_fword PARAMS((int, int));
 266 extern int rl_vi_bword PARAMS((int, int));
 267 extern int rl_vi_eword PARAMS((int, int));
 268
 269 /* **************************************************************** */
 270 /*                                                                  */
 271 /*                      Well Published Functions                    */
 272 /*                                                                  */
 273 /* **************************************************************** */
 274
 275 /* Readline functions. */
 276 /* Read a line of input.  Prompt with PROMPT.  A NULL PROMPT means none. */
 277 extern char *readline PARAMS((const char *));
 278
 279 extern int rl_set_prompt PARAMS((const char *));
 280 extern int rl_expand_prompt PARAMS((char *));
 281
 282 extern int rl_initialize PARAMS((void));
 283
 284 /* Undocumented; unused by readline */
 285 extern int rl_discard_argument PARAMS((void));
 286
 287 /* Utility functions to bind keys to readline commands. */
 288 extern int rl_add_defun PARAMS((const char *, rl_command_func_t *, int));
 289 extern int rl_bind_key PARAMS((int, rl_command_func_t *));
 290 extern int rl_bind_key_in_map PARAMS((int, rl_command_func_t *, Keymap));
 291 extern int rl_unbind_key PARAMS((int));
 292 extern int rl_unbind_key_in_map PARAMS((int, Keymap));
 293 extern int rl_unbind_function_in_map PARAMS((rl_command_func_t *, Keymap));
 294 extern int rl_unbind_command_in_map PARAMS((const char *, Keymap));
 295 extern int rl_set_key PARAMS((const char *, rl_command_func_t *, Keymap));
 296 extern int rl_generic_bind PARAMS((int, const char *, char *, Keymap));
 297 extern int rl_variable_bind PARAMS((const char *, const char *));
 298
 299 /* Backwards compatibility, use rl_generic_bind instead. */
 300 extern int rl_macro_bind PARAMS((const char *, const char *, Keymap));
 301
 302 /* Undocumented in the texinfo manual; not really useful to programs. */
 303 extern int rl_translate_keyseq PARAMS((const char *, char *, int *));
 304 extern char *rl_untranslate_keyseq PARAMS((int));
 305
 306 extern rl_command_func_t *rl_named_function PARAMS((const char *));
 307 extern rl_command_func_t *rl_function_of_keyseq PARAMS((const char *, Keymap, int *));
 308
 309 extern void rl_list_funmap_names PARAMS((void));
 310 extern char **rl_invoking_keyseqs_in_map PARAMS((rl_command_func_t *, Keymap));
 311 extern char **rl_invoking_keyseqs PARAMS((rl_command_func_t *));
 312
 313 extern void rl_function_dumper PARAMS((int));
 314 extern void rl_macro_dumper PARAMS((int));
 315 extern void rl_variable_dumper PARAMS((int));
 316
 317 extern int rl_read_init_file PARAMS((const char *));
 318 extern int rl_parse_and_bind PARAMS((char *));
 319
 320 /* Functions for manipulating keymaps. */
 321 extern Keymap rl_make_bare_keymap PARAMS((void));
 322 extern Keymap rl_copy_keymap PARAMS((Keymap));
 323 extern Keymap rl_make_keymap PARAMS((void));
 324 extern void rl_discard_keymap PARAMS((Keymap));
 325
 326 extern Keymap rl_get_keymap_by_name PARAMS((const char *));
 327 extern char *rl_get_keymap_name PARAMS((Keymap));
 328 extern void rl_set_keymap PARAMS((Keymap));
 329 extern Keymap rl_get_keymap PARAMS((void));
 330 /* Undocumented; used internally only. */
 331 extern void rl_set_keymap_from_edit_mode PARAMS((void));
 332 extern char *rl_get_keymap_name_from_edit_mode PARAMS((void));
 333
 334 /* Functions for manipulating the funmap, which maps command names to functions. */
 335 extern int rl_add_funmap_entry PARAMS((const char *, rl_command_func_t *));
 336 extern const char **rl_funmap_names PARAMS((void));
 337 /* Undocumented, only used internally -- there is only one funmap, and this
 338    function may be called only once. */
 339 extern void rl_initialize_funmap PARAMS((void));
 340
 341 /* Utility functions for managing keyboard macros. */
 342 extern void rl_push_macro_input PARAMS((char *));
 343
 344 /* Functions for undoing, from undo.c */
 345 extern void rl_add_undo PARAMS((enum undo_code, int, int, char *));
 346 extern void rl_free_undo_list PARAMS((void));
 347 extern int rl_do_undo PARAMS((void));
 348 extern int rl_begin_undo_group PARAMS((void));
 349 extern int rl_end_undo_group PARAMS((void));
 350 extern int rl_modifying PARAMS((int, int));
 351
 352 /* Functions for redisplay. */
 353 extern void rl_redisplay PARAMS((void));
 354 extern int rl_on_new_line PARAMS((void));
 355 extern int rl_on_new_line_with_prompt PARAMS((void));
 356 extern int rl_forced_update_display PARAMS((void));
 357 extern int rl_clear_message PARAMS((void));
 358 extern int rl_reset_line_state PARAMS((void));
 359 extern int rl_crlf PARAMS((void));
 360
 361 #if (defined (__STDC__) || defined (__cplusplus)) && defined (USE_VARARGS) && defined (PREFER_STDARG)
 362 extern int rl_message (const char *, ...)  __attribute__((__format__ (printf, 1, 2)));
 363 #else
 364 extern int rl_message ();
 365 #endif
 366
 367 extern int rl_show_char PARAMS((int));
 368
 369 /* Undocumented in texinfo manual. */
 370 extern int rl_character_len PARAMS((int, int));
 371
 372 /* Save and restore internal prompt redisplay information. */
 373 extern void rl_save_prompt PARAMS((void));
 374 extern void rl_restore_prompt PARAMS((void));
 375
 376 /* Modifying text. */
 377 extern void rl_replace_line PARAMS((const char *, int));
 378 extern int rl_insert_text PARAMS((const char *));
 379 extern int rl_delete_text PARAMS((int, int));
 380 extern int rl_kill_text PARAMS((int, int));
 381 extern char *rl_copy_text PARAMS((int, int));
 382
 383 /* Terminal and tty mode management. */
 384 extern void rl_prep_terminal PARAMS((int));
 385 extern void rl_deprep_terminal PARAMS((void));
 386 extern void rl_tty_set_default_bindings PARAMS((Keymap));
 387
 388 extern int rl_reset_terminal PARAMS((const char *));
 389 extern void rl_resize_terminal PARAMS((void));
 390 extern void rl_set_screen_size PARAMS((int, int));
 391 extern void rl_get_screen_size PARAMS((int *, int *));
 392
 393 extern char *rl_get_termcap PARAMS((const char *));
 394
 395 /* Functions for character input. */
 396 extern int rl_stuff_char PARAMS((int));
 397 extern int rl_execute_next PARAMS((int));
 398 extern int rl_clear_pending_input PARAMS((void));
 399 extern int rl_read_key PARAMS((void));
 400 extern int rl_getc PARAMS((FILE *));
 401 extern int rl_set_keyboard_input_timeout PARAMS((int));
 402
 403 /* `Public' utility functions . */
 404 extern void rl_extend_line_buffer PARAMS((int));
 405 extern int rl_ding PARAMS((void));
 406 extern int rl_alphabetic PARAMS((int));
 407
 408 /* Readline signal handling, from signals.c */
 409 extern int rl_set_signals PARAMS((void));
 410 extern int rl_clear_signals PARAMS((void));
 411 extern void rl_cleanup_after_signal PARAMS((void));
 412 extern void rl_reset_after_signal PARAMS((void));
 413 extern void rl_free_line_state PARAMS((void));
 414
 415 extern int rl_set_paren_blink_timeout PARAMS((int));
 416
 417 /* Undocumented. */
 418 extern int rl_maybe_save_line PARAMS((void));
 419 extern int rl_maybe_unsave_line PARAMS((void));
 420 extern int rl_maybe_replace_line PARAMS((void));
 421
 422 /* Completion functions. */
 423 extern int rl_complete_internal PARAMS((int));
 424 extern void rl_display_match_list PARAMS((char **, int, int));
 425
 426 extern char **rl_completion_matches PARAMS((const char *, rl_compentry_func_t *));
 427 extern char *rl_username_completion_function PARAMS((const char *, int));
 428 extern char *rl_filename_completion_function PARAMS((const char *, int));
 429
 430 extern int rl_completion_mode PARAMS((rl_command_func_t *));
 431
 432 #if 0
 433 /* Backwards compatibility (compat.c).  These will go away sometime. */
 434 extern void free_undo_list PARAMS((void));
 435 extern int maybe_save_line PARAMS((void));
 436 extern int maybe_unsave_line PARAMS((void));
 437 extern int maybe_replace_line PARAMS((void));
 438
 439 extern int ding PARAMS((void));
 440 extern int alphabetic PARAMS((int));
 441 extern int crlf PARAMS((void));
 442
 443 extern char **completion_matches PARAMS((char *, rl_compentry_func_t *));
 444 extern char *username_completion_function PARAMS((const char *, int));
 445 extern char *filename_completion_function PARAMS((const char *, int));
 446 #endif
 447
 448 /* **************************************************************** */
 449 /*                                                                  */
 450 /*                      Well Published Variables                    */
 451 /*                                                                  */
 452 /* **************************************************************** */
 453
 454 /* The version of this incarnation of the readline library. */
 455 extern const char *rl_library_version;          /* e.g., "4.2" */
 456 extern int rl_readline_version;                 /* e.g., 0x0402 */
 457
 458 /* True if this is real GNU readline. */
 459 extern int rl_gnu_readline_p;
 460
 461 /* Flags word encapsulating the current readline state. */
 462 extern int rl_readline_state;
 463
 464 /* Says which editing mode readline is currently using.  1 means emacs mode;
 465    0 means vi mode. */
 466 extern int rl_editing_mode;
 467
 468 /* Insert or overwrite mode for emacs mode.  1 means insert mode; 0 means
 469    overwrite mode.  Reset to insert mode on each input line. */
 470 extern int rl_insert_mode;
 471
 472 /* The name of the calling program.  You should initialize this to
 473    whatever was in argv[0].  It is used when parsing conditionals. */
 474 extern const char *rl_readline_name;
 475
 476 /* The prompt readline uses.  This is set from the argument to
 477    readline (), and should not be assigned to directly. */
 478 extern char *rl_prompt;
 479
 480 /* The line buffer that is in use. */
 481 extern char *rl_line_buffer;
 482
 483 /* The location of point, and end. */
 484 extern int rl_point;
 485 extern int rl_end;
 486
 487 /* The mark, or saved cursor position. */
 488 extern int rl_mark;
 489
 490 /* Flag to indicate that readline has finished with the current input
 491    line and should return it. */
 492 extern int rl_done;
 493
 494 /* If set to a character value, that will be the next keystroke read. */
 495 extern int rl_pending_input;
 496
 497 /* Non-zero if we called this function from _rl_dispatch().  It's present
 498    so functions can find out whether they were called from a key binding
 499    or directly from an application. */
 500 extern int rl_dispatching;
 501
 502 /* Non-zero if the user typed a numeric argument before executing the
 503    current function. */
 504 extern int rl_explicit_arg;
 505
 506 /* The current value of the numeric argument specified by the user. */
 507 extern int rl_numeric_arg;
 508
 509 /* The address of the last command function Readline executed. */
 510 extern rl_command_func_t *rl_last_func;
 511
 512 /* The name of the terminal to use. */
 513 extern const char *rl_terminal_name;
 514
 515 /* The input and output streams. */
 516 extern FILE *rl_instream;
 517 extern FILE *rl_outstream;
 518
 519 /* If non-zero, then this is the address of a function to call just
 520    before readline_internal () prints the first prompt. */
 521 extern rl_hook_func_t *rl_startup_hook;
 522
 523 /* If non-zero, this is the address of a function to call just before
 524    readline_internal_setup () returns and readline_internal starts
 525    reading input characters. */
 526 extern rl_hook_func_t *rl_pre_input_hook;
 527
 528 /* The address of a function to call periodically while Readline is
 529    awaiting character input, or NULL, for no event handling. */
 530 extern rl_hook_func_t *rl_event_hook;
 531
 532 /* The address of the function to call to fetch a character from the current
 533    Readline input stream */
 534 extern rl_getc_func_t *rl_getc_function;
 535
 536 extern rl_voidfunc_t *rl_redisplay_function;
 537
 538 extern rl_vintfunc_t *rl_prep_term_function;
 539 extern rl_voidfunc_t *rl_deprep_term_function;
 540
 541 /* Dispatch variables. */
 542 extern Keymap rl_executing_keymap;
 543 extern Keymap rl_binding_keymap;
 544
 545 /* Display variables. */
 546 /* If non-zero, readline will erase the entire line, including any prompt,
 547    if the only thing typed on an otherwise-blank line is something bound to
 548    rl_newline. */
 549 extern int rl_erase_empty_line;
 550
 551 /* If non-zero, the application has already printed the prompt (rl_prompt)
 552    before calling readline, so readline should not output it the first time
 553    redisplay is done. */
 554 extern int rl_already_prompted;
 555
 556 /* A non-zero value means to read only this many characters rather than
 557    up to a character bound to accept-line. */
 558 extern int rl_num_chars_to_read;
 559
 560 /* The text of a currently-executing keyboard macro. */
 561 extern char *rl_executing_macro;
 562
 563 /* Variables to control readline signal handling. */
 564 /* If non-zero, readline will install its own signal handlers for
 565    SIGINT, SIGTERM, SIGQUIT, SIGALRM, SIGTSTP, SIGTTIN, and SIGTTOU. */
 566 extern int rl_catch_signals;
 567
 568 /* If non-zero, readline will install a signal handler for SIGWINCH
 569    that also attempts to call any calling application's SIGWINCH signal
 570    handler.  Note that the terminal is not cleaned up before the
 571    application's signal handler is called; use rl_cleanup_after_signal()
 572    to do that. */
 573 extern int rl_catch_sigwinch;
 574
 575 /* Completion variables. */
 576 /* Pointer to the generator function for completion_matches ().
 577    NULL means to use rl_filename_completion_function (), the default
 578    filename completer. */
 579 extern rl_compentry_func_t *rl_completion_entry_function;
 580
 581 /* If rl_ignore_some_completions_function is non-NULL it is the address
 582    of a function to call after all of the possible matches have been
 583    generated, but before the actual completion is done to the input line.
 584    The function is called with one argument; a NULL terminated array
 585    of (char *).  If your function removes any of the elements, they
 586    must be free()'ed. */
 587 extern rl_compignore_func_t *rl_ignore_some_completions_function;
 588
 589 /* Pointer to alternative function to create matches.
 590    Function is called with TEXT, START, and END.
 591    START and END are indices in RL_LINE_BUFFER saying what the boundaries
 592    of TEXT are.
 593    If this function exists and returns NULL then call the value of
 594    rl_completion_entry_function to try to match, otherwise use the
 595    array of strings returned. */
 596 extern rl_completion_func_t *rl_attempted_completion_function;
 597
 598 /* The basic list of characters that signal a break between words for the
 599    completer routine.  The initial contents of this variable is what
 600    breaks words in the shell, i.e. "n\"\\'`@$>". */
 601 extern const char *rl_basic_word_break_characters;
 602
 603 /* The list of characters that signal a break between words for
 604    rl_complete_internal.  The default list is the contents of
 605    rl_basic_word_break_characters.  */
 606 extern const char *rl_completer_word_break_characters;
 607
 608 /* List of characters which can be used to quote a substring of the line.
 609    Completion occurs on the entire substring, and within the substring
 610    rl_completer_word_break_characters are treated as any other character,
 611    unless they also appear within this list. */
 612 extern const char *rl_completer_quote_characters;
 613
 614 /* List of quote characters which cause a word break. */
 615 extern const char *rl_basic_quote_characters;
 616
 617 /* List of characters that need to be quoted in filenames by the completer. */
 618 extern const char *rl_filename_quote_characters;
 619
 620 /* List of characters that are word break characters, but should be left
 621    in TEXT when it is passed to the completion function.  The shell uses
 622    this to help determine what kind of completing to do. */
 623 extern const char *rl_special_prefixes;
 624
 625 /* If non-zero, then this is the address of a function to call when
 626    completing on a directory name.  The function is called with
 627    the address of a string (the current directory name) as an arg.  It
 628    changes what is displayed when the possible completions are printed
 629    or inserted. */
 630 extern rl_icppfunc_t *rl_directory_completion_hook;
 631
 632 /* If non-zero, this is the address of a function to call when completing
 633    a directory name.  This function takes the address of the directory name
 634    to be modified as an argument.  Unlike rl_directory_completion_hook, it
 635    only modifies the directory name used in opendir(2), not what is displayed
 636    when the possible completions are printed or inserted.  It is called
 637    before rl_directory_completion_hook.  I'm not happy with how this works
 638    yet, so it's undocumented. */
 639 extern rl_icppfunc_t *rl_directory_rewrite_hook;
 640
 641 /* Backwards compatibility with previous versions of readline. */
 642 #define rl_symbolic_link_hook rl_directory_completion_hook
 643
 644 /* If non-zero, then this is the address of a function to call when
 645    completing a word would normally display the list of possible matches.
 646    This function is called instead of actually doing the display.
 647    It takes three arguments: (char **matches, int num_matches, int max_length)
 648    where MATCHES is the array of strings that matched, NUM_MATCHES is the
 649    number of strings in that array, and MAX_LENGTH is the length of the
 650    longest string in that array. */
 651 extern rl_compdisp_func_t *rl_completion_display_matches_hook;
 652
 653 /* Non-zero means that the results of the matches are to be treated
 654    as filenames.  This is ALWAYS zero on entry, and can only be changed
 655    within a completion entry finder function. */
 656 extern int rl_filename_completion_desired;
 657
 658 /* Non-zero means that the results of the matches are to be quoted using
 659    double quotes (or an application-specific quoting mechanism) if the
 660    filename contains any characters in rl_word_break_chars.  This is
 661    ALWAYS non-zero on entry, and can only be changed within a completion
 662    entry finder function. */
 663 extern int rl_filename_quoting_desired;
 664
 665 /* Set to a function to quote a filename in an application-specific fashion.
 666    Called with the text to quote, the type of match found (single or multiple)
 667    and a pointer to the quoting character to be used, which the function can
 668    reset if desired. */
 669 extern rl_quote_func_t *rl_filename_quoting_function;
 670
 671 /* Function to call to remove quoting characters from a filename.  Called
 672    before completion is attempted, so the embedded quotes do not interfere
 673    with matching names in the file system. */
 674 extern rl_dequote_func_t *rl_filename_dequoting_function;
 675
 676 /* Function to call to decide whether or not a word break character is
 677    quoted.  If a character is quoted, it does not break words for the
 678    completer. */
 679 extern rl_linebuf_func_t *rl_char_is_quoted_p;
 680
 681 /* Non-zero means to suppress normal filename completion after the
 682    user-specified completion function has been called. */
 683 extern int rl_attempted_completion_over;
 684
 685 /* Set to a character describing the type of completion being attempted by
 686    rl_complete_internal; available for use by application completion
 687    functions. */
 688 extern int rl_completion_type;
 689
 690 /* Character appended to completed words when at the end of the line.  The
 691    default is a space.  Nothing is added if this is '\0'. */
 692 extern int rl_completion_append_character;
 693
 694 /* If set to non-zero by an application completion function,
 695    rl_completion_append_character will not be appended. */
 696 extern int rl_completion_suppress_append;
 697
 698 /* Up to this many items will be displayed in response to a
 699    possible-completions call.  After that, we ask the user if she
 700    is sure she wants to see them all.  The default value is 100. */
 701 extern int rl_completion_query_items;
 702
 703 /* If non-zero, a slash will be appended to completed filenames that are
 704    symbolic links to directory names, subject to the value of the
 705    mark-directories variable (which is user-settable).  This exists so
 706    that application completion functions can override the user's preference
 707    (set via the mark-symlinked-directories variable) if appropriate.
 708    It's set to the value of _rl_complete_mark_symlink_dirs in
 709    rl_complete_internal before any application-specific completion
 710    function is called, so without that function doing anything, the user's
 711    preferences are honored. */
 712 extern int rl_completion_mark_symlink_dirs;
 713
 714 /* If non-zero, then disallow duplicates in the matches. */
 715 extern int rl_ignore_completion_duplicates;
 716
 717 /* If this is non-zero, completion is (temporarily) inhibited, and the
 718    completion character will be inserted as any other. */
 719 extern int rl_inhibit_completion;
 720
 721 /* Definitions available for use by readline clients. */
 722 #define RL_PROMPT_START_IGNORE  '\001'
 723 #define RL_PROMPT_END_IGNORE    '\002'
 724
 725 /* Possible values for do_replace argument to rl_filename_quoting_function,
 726    called by rl_complete_internal. */
 727 #define NO_MATCH        0
 728 #define SINGLE_MATCH    1
 729 #define MULT_MATCH      2
 730
 731 /* Possible state values for rl_readline_state */
 732 #define RL_STATE_NONE           0x00000         /* no state; before first call */
 733
 734 #define RL_STATE_INITIALIZING   0x00001         /* initializing */
 735 #define RL_STATE_INITIALIZED    0x00002         /* initialization done */
 736 #define RL_STATE_TERMPREPPED    0x00004         /* terminal is prepped */
 737 #define RL_STATE_READCMD        0x00008         /* reading a command key */
 738 #define RL_STATE_METANEXT       0x00010         /* reading input after ESC */
 739 #define RL_STATE_DISPATCHING    0x00020         /* dispatching to a command */
 740 #define RL_STATE_MOREINPUT      0x00040         /* reading more input in a command function */
 741 #define RL_STATE_ISEARCH        0x00080         /* doing incremental search */
 742 #define RL_STATE_NSEARCH        0x00100         /* doing non-inc search */
 743 #define RL_STATE_SEARCH         0x00200         /* doing a history search */
 744 #define RL_STATE_NUMERICARG     0x00400         /* reading numeric argument */
 745 #define RL_STATE_MACROINPUT     0x00800         /* getting input from a macro */
 746 #define RL_STATE_MACRODEF       0x01000         /* defining keyboard macro */
 747 #define RL_STATE_OVERWRITE      0x02000         /* overwrite mode */
 748 #define RL_STATE_COMPLETING     0x04000         /* doing completion */
 749 #define RL_STATE_SIGHANDLER     0x08000         /* in readline sighandler */
 750 #define RL_STATE_UNDOING        0x10000         /* doing an undo */
 751 #define RL_STATE_INPUTPENDING   0x20000         /* rl_execute_next called */
 752
 753 #define RL_STATE_DONE           0x80000         /* done; accepted line */
 754
 755 #define RL_SETSTATE(x)          (rl_readline_state |= (x))
 756 #define RL_UNSETSTATE(x)        (rl_readline_state &= ~(x))
 757 #define RL_ISSTATE(x)           (rl_readline_state & (x))
 758
 759 struct readline_state {
 760   /* line state */
 761   int point;
 762   int end;
 763   int mark;
 764   char *buffer;
 765   int buflen;
 766   UNDO_LIST *ul;
 767   char *prompt;
 768
 769   /* global state */
 770   int rlstate;
 771   int done;
 772   Keymap kmap;
 773
 774   /* input state */
 775   rl_command_func_t *lastfunc;
 776   int insmode;
 777   int edmode;
 778   int kseqlen;
 779   FILE *inf;
 780   FILE *outf;
 781   int pendingin;
 782   char *macro;
 783
 784   /* signal state */
 785   int catchsigs;
 786   int catchsigwinch;
 787
 788   /* reserved for future expansion, so the struct size doesn't change */
 789   char reserved[64];
 790 };
 791
 792 extern int rl_save_state PARAMS((struct readline_state *));
 793 extern int rl_restore_state PARAMS((struct readline_state *));
 794
 795 #ifdef __cplusplus
 796 }
 797 #endif
 798
 799 #endif /* _READLINE_H_ */