readline/rlprivate.h

   1 /* rlprivate.h -- functions and variables global to the readline library,
   2                   but not intended for use by applications. */
   3
   4 /* Copyright (C) 1999-2010 Free Software Foundation, Inc.
   5
   6    This file is part of the GNU Readline Library (Readline), a library
   7    for reading lines of text with interactive input and history editing.
   8
   9    Readline is free software: you can redistribute it and/or modify
  10    it under the terms of the GNU General Public License as published by
  11    the Free Software Foundation, either version 3 of the License, or
  12    (at your option) any later version.
  13
  14    Readline is distributed in the hope that it will be useful,
  15    but WITHOUT ANY WARRANTY; without even the implied warranty of
  16    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  17    GNU General Public License for more details.
  18
  19    You should have received a copy of the GNU General Public License
  20    along with Readline.  If not, see <http://www.gnu.org/licenses/>.
  21 */
  22
  23 #if !defined (_RL_PRIVATE_H_)
  24 #define _RL_PRIVATE_H_
  25
  26 #include "rlconf.h"     /* for VISIBLE_STATS */
  27 #include "rlstdc.h"
  28 #include "posixjmp.h"   /* defines procenv_t */
  29
  30 /*************************************************************************
  31  *                                                                       *
  32  * Convenience definitions                                               *
  33  *                                                                       *
  34  *************************************************************************/
  35
  36 #define EMACS_MODE()            (rl_editing_mode == emacs_mode)
  37 #define VI_COMMAND_MODE()       (rl_editing_mode == vi_mode && _rl_keymap == vi_movement_keymap)
  38 #define VI_INSERT_MODE()        (rl_editing_mode == vi_mode && _rl_keymap == vi_insertion_keymap)
  39
  40 #define RL_CHECK_SIGNALS() \
  41         do { \
  42           if (_rl_caught_signal) _rl_signal_handler (_rl_caught_signal); \
  43         } while (0)
  44
  45 /*************************************************************************
  46  *                                                                       *
  47  * Global structs undocumented in texinfo manual and not in readline.h   *
  48  *                                                                       *
  49  *************************************************************************/
  50 /* search types */
  51 #define RL_SEARCH_ISEARCH       0x01            /* incremental search */
  52 #define RL_SEARCH_NSEARCH       0x02            /* non-incremental search */
  53 #define RL_SEARCH_CSEARCH       0x04            /* intra-line char search */
  54
  55 /* search flags */
  56 #define SF_REVERSE              0x01
  57 #define SF_FOUND                0x02
  58 #define SF_FAILED               0x04
  59 #define SF_CHGKMAP              0x08
  60
  61 typedef struct  __rl_search_context
  62 {
  63   int type;
  64   int sflags;
  65
  66   char *search_string;
  67   int search_string_index;
  68   int search_string_size;
  69
  70   char **lines;
  71   char *allocated_line;
  72   int hlen;
  73   int hindex;
  74
  75   int save_point;
  76   int save_mark;
  77   int save_line;
  78   int last_found_line;
  79   char *prev_line_found;
  80
  81   UNDO_LIST *save_undo_list;
  82
  83   Keymap keymap;        /* used when dispatching commands in search string */
  84   Keymap okeymap;       /* original keymap */
  85
  86   int history_pos;
  87   int direction;
  88
  89   int lastc;
  90 #if defined (HANDLE_MULTIBYTE)
  91   char mb[MB_LEN_MAX];
  92 #endif
  93
  94   char *sline;
  95   int sline_len;
  96   int sline_index;
  97
  98   char  *search_terminators;
  99 } _rl_search_cxt;
 100
 101 /* Callback data for reading numeric arguments */
 102 #define NUM_SAWMINUS    0x01
 103 #define NUM_SAWDIGITS   0x02
 104 #define NUM_READONE     0x04
 105
 106 typedef int _rl_arg_cxt;
 107
 108 /* A context for reading key sequences longer than a single character when
 109    using the callback interface. */
 110 #define KSEQ_DISPATCHED 0x01
 111 #define KSEQ_SUBSEQ     0x02
 112 #define KSEQ_RECURSIVE  0x04
 113
 114 typedef struct __rl_keyseq_context
 115 {
 116   int flags;
 117   int subseq_arg;
 118   int subseq_retval;            /* XXX */
 119   Keymap dmap;
 120
 121   Keymap oldmap;
 122   int okey;
 123   struct __rl_keyseq_context *ocxt;
 124   int childval;
 125 } _rl_keyseq_cxt;
 126
 127 /* vi-mode commands that use result of motion command to define boundaries */
 128 #define VIM_DELETE      0x01
 129 #define VIM_CHANGE      0x02
 130 #define VIM_YANK        0x04
 131
 132 /* various states for vi-mode commands that use motion commands.  reflects
 133    RL_READLINE_STATE */
 134 #define VMSTATE_READ    0x01
 135 #define VMSTATE_NUMARG  0x02
 136
 137 typedef struct __rl_vimotion_context
 138 {
 139   int op;
 140   int state;
 141   int flags;            /* reserved */
 142   _rl_arg_cxt ncxt;
 143   int numeric_arg;
 144   int start, end;       /* rl_point, rl_end */
 145   int key, motion;      /* initial key, motion command */
 146 } _rl_vimotion_cxt;
 147
 148 /* fill in more as needed */
 149 /* `Generic' callback data and functions */
 150 typedef struct __rl_callback_generic_arg
 151 {
 152   int count;
 153   int i1, i2;
 154   /* add here as needed */
 155 } _rl_callback_generic_arg;
 156
 157 typedef int _rl_callback_func_t PARAMS((_rl_callback_generic_arg *));
 158
 159 /*************************************************************************
 160  *                                                                       *
 161  * Global functions undocumented in texinfo manual and not in readline.h *
 162  *                                                                       *
 163  *************************************************************************/
 164
 165 /*************************************************************************
 166  *                                                                       *
 167  * Global variables undocumented in texinfo manual and not in readline.h *
 168  *                                                                       *
 169  *************************************************************************/
 170
 171 /* complete.c */
 172 extern int rl_complete_with_tilde_expansion;
 173 #if defined (VISIBLE_STATS)
 174 extern int rl_visible_stats;
 175 #endif /* VISIBLE_STATS */
 176
 177 /* readline.c */
 178 extern int rl_line_buffer_len;
 179 extern int rl_arg_sign;
 180 extern int rl_visible_prompt_length;
 181 extern int rl_key_sequence_length;
 182 extern int rl_byte_oriented;
 183
 184 /* display.c */
 185 extern int rl_display_fixed;
 186
 187 /* parens.c */
 188 extern int rl_blink_matching_paren;
 189
 190 /*************************************************************************
 191  *                                                                       *
 192  * Global functions and variables unsed and undocumented                 *
 193  *                                                                       *
 194  *************************************************************************/
 195
 196 /* kill.c */
 197 extern int rl_set_retained_kills PARAMS((int));
 198
 199 /* terminal.c */
 200 extern void _rl_set_screen_size PARAMS((int, int));
 201
 202 /* undo.c */
 203 extern int _rl_fix_last_undo_of_type PARAMS((int, int, int));
 204
 205 /* util.c */
 206 extern char *_rl_savestring PARAMS((const char *));
 207
 208 /*************************************************************************
 209  *                                                                       *
 210  * Functions and variables private to the readline library               *
 211  *                                                                       *
 212  *************************************************************************/
 213
 214 /* NOTE: Functions and variables prefixed with `_rl_' are
 215    pseudo-global: they are global so they can be shared
 216    between files in the readline library, but are not intended
 217    to be visible to readline callers. */
 218
 219 /*************************************************************************
 220  * Undocumented private functions                                        *
 221  *************************************************************************/
 222
 223 #if defined(READLINE_CALLBACKS)
 224
 225 /* readline.c */
 226 extern void readline_internal_setup PARAMS((void));
 227 extern char *readline_internal_teardown PARAMS((int));
 228 extern int readline_internal_char PARAMS((void));
 229
 230 extern _rl_keyseq_cxt *_rl_keyseq_cxt_alloc PARAMS((void));
 231 extern void _rl_keyseq_cxt_dispose PARAMS((_rl_keyseq_cxt *));
 232 extern void _rl_keyseq_chain_dispose PARAMS((void));
 233
 234 extern int _rl_dispatch_callback PARAMS((_rl_keyseq_cxt *));
 235
 236 /* callback.c */
 237 extern _rl_callback_generic_arg *_rl_callback_data_alloc PARAMS((int));
 238 extern void _rl_callback_data_dispose PARAMS((_rl_callback_generic_arg *));
 239
 240 #endif /* READLINE_CALLBACKS */
 241
 242 /* bind.c */
 243
 244 /* complete.c */
 245 extern void _rl_reset_completion_state PARAMS((void));
 246 extern char _rl_find_completion_word PARAMS((int *, int *));
 247 extern void _rl_free_match_list PARAMS((char **));
 248
 249 /* display.c */
 250 extern char *_rl_strip_prompt PARAMS((char *));
 251 extern void _rl_move_cursor_relative PARAMS((int, const char *));
 252 extern void _rl_move_vert PARAMS((int));
 253 extern void _rl_save_prompt PARAMS((void));
 254 extern void _rl_restore_prompt PARAMS((void));
 255 extern char *_rl_make_prompt_for_search PARAMS((int));
 256 extern void _rl_erase_at_end_of_line PARAMS((int));
 257 extern void _rl_clear_to_eol PARAMS((int));
 258 extern void _rl_clear_screen PARAMS((void));
 259 extern void _rl_update_final PARAMS((void));
 260 extern void _rl_redisplay_after_sigwinch PARAMS((void));
 261 extern void _rl_clean_up_for_exit PARAMS((void));
 262 extern void _rl_erase_entire_line PARAMS((void));
 263 extern int _rl_current_display_line PARAMS((void));
 264
 265 /* input.c */
 266 extern int _rl_any_typein PARAMS((void));
 267 extern int _rl_input_available PARAMS((void));
 268 extern int _rl_input_queued PARAMS((int));
 269 extern void _rl_insert_typein PARAMS((int));
 270 extern int _rl_unget_char PARAMS((int));
 271 extern int _rl_pushed_input_available PARAMS((void));
 272
 273 /* isearch.c */
 274 extern _rl_search_cxt *_rl_scxt_alloc PARAMS((int, int));
 275 extern void _rl_scxt_dispose PARAMS((_rl_search_cxt *, int));
 276
 277 extern int _rl_isearch_dispatch PARAMS((_rl_search_cxt *, int));
 278 extern int _rl_isearch_callback PARAMS((_rl_search_cxt *));
 279
 280 extern int _rl_search_getchar PARAMS((_rl_search_cxt *));
 281
 282 /* macro.c */
 283 extern void _rl_with_macro_input PARAMS((char *));
 284 extern int _rl_next_macro_key PARAMS((void));
 285 extern void _rl_push_executing_macro PARAMS((void));
 286 extern void _rl_pop_executing_macro PARAMS((void));
 287 extern void _rl_add_macro_char PARAMS((int));
 288 extern void _rl_kill_kbd_macro PARAMS((void));
 289
 290 /* misc.c */
 291 extern int _rl_arg_overflow PARAMS((void));
 292 extern void _rl_arg_init PARAMS((void));
 293 extern int _rl_arg_getchar PARAMS((void));
 294 extern int _rl_arg_callback PARAMS((_rl_arg_cxt));
 295 extern void _rl_reset_argument PARAMS((void));
 296
 297 extern void _rl_start_using_history PARAMS((void));
 298 extern int _rl_free_saved_history_line PARAMS((void));
 299 extern void _rl_set_insert_mode PARAMS((int, int));
 300
 301 extern void _rl_revert_all_lines PARAMS((void));
 302
 303 /* nls.c */
 304 extern int _rl_init_eightbit PARAMS((void));
 305
 306 /* parens.c */
 307 extern void _rl_enable_paren_matching PARAMS((int));
 308
 309 /* readline.c */
 310 extern void _rl_init_line_state PARAMS((void));
 311 extern void _rl_set_the_line PARAMS((void));
 312 extern int _rl_dispatch PARAMS((int, Keymap));
 313 extern int _rl_dispatch_subseq PARAMS((int, Keymap, int));
 314 extern void _rl_internal_char_cleanup PARAMS((void));
 315
 316 /* rltty.c */
 317 extern int _rl_disable_tty_signals PARAMS((void));
 318 extern int _rl_restore_tty_signals PARAMS((void));
 319
 320 /* search.c */
 321 extern int _rl_nsearch_callback PARAMS((_rl_search_cxt *));
 322
 323 /* signals.c */
 324 extern void _rl_signal_handler PARAMS((int));
 325
 326 extern void _rl_block_sigint PARAMS((void));
 327 extern void _rl_release_sigint PARAMS((void));
 328 extern void _rl_block_sigwinch PARAMS((void));
 329 extern void _rl_release_sigwinch PARAMS((void));
 330
 331 /* terminal.c */
 332 extern void _rl_get_screen_size PARAMS((int, int));
 333 extern int _rl_init_terminal_io PARAMS((const char *));
 334 #ifdef _MINIX
 335 extern void _rl_output_character_function PARAMS((int));
 336 #else
 337 extern int _rl_output_character_function PARAMS((int));
 338 #endif
 339 extern void _rl_output_some_chars PARAMS((const char *, int));
 340 extern int _rl_backspace PARAMS((int));
 341 extern void _rl_enable_meta_key PARAMS((void));
 342 extern void _rl_control_keypad PARAMS((int));
 343 extern void _rl_set_cursor PARAMS((int, int));
 344
 345 /* text.c */
 346 extern void _rl_fix_point PARAMS((int));
 347 extern int _rl_replace_text PARAMS((const char *, int, int));
 348 extern int _rl_forward_char_internal PARAMS((int));
 349 extern int _rl_insert_char PARAMS((int, int));
 350 extern int _rl_overwrite_char PARAMS((int, int));
 351 extern int _rl_overwrite_rubout PARAMS((int, int));
 352 extern int _rl_rubout_char PARAMS((int, int));
 353 #if defined (HANDLE_MULTIBYTE)
 354 extern int _rl_char_search_internal PARAMS((int, int, char *, int));
 355 #else
 356 extern int _rl_char_search_internal PARAMS((int, int, int));
 357 #endif
 358 extern int _rl_set_mark_at_pos PARAMS((int));
 359
 360 /* undo.c */
 361 extern UNDO_LIST *_rl_copy_undo_entry PARAMS((UNDO_LIST *));
 362 extern UNDO_LIST *_rl_copy_undo_list PARAMS((UNDO_LIST *));
 363
 364 /* util.c */
 365 #if defined (USE_VARARGS) && defined (PREFER_STDARG)
 366 extern void _rl_ttymsg (const char *, ...)  __attribute__((__format__ (printf, 1, 2)));
 367 extern void _rl_errmsg (const char *, ...)  __attribute__((__format__ (printf, 1, 2)));
 368 extern void _rl_trace (const char *, ...)  __attribute__((__format__ (printf, 1, 2)));
 369 #else
 370 extern void _rl_ttymsg ();
 371 extern void _rl_errmsg ();
 372 extern void _rl_trace ();
 373 #endif
 374
 375 extern int _rl_tropen PARAMS((void));
 376
 377 extern int _rl_abort_internal PARAMS((void));
 378 extern int _rl_null_function PARAMS((int, int));
 379 extern char *_rl_strindex PARAMS((const char *, const char *));
 380 extern int _rl_qsort_string_compare PARAMS((char **, char **));
 381 extern int (_rl_uppercase_p) PARAMS((int));
 382 extern int (_rl_lowercase_p) PARAMS((int));
 383 extern int (_rl_pure_alphabetic) PARAMS((int));
 384 extern int (_rl_digit_p) PARAMS((int));
 385 extern int (_rl_to_lower) PARAMS((int));
 386 extern int (_rl_to_upper) PARAMS((int));
 387 extern int (_rl_digit_value) PARAMS((int));
 388
 389 /* vi_mode.c */
 390 extern void _rl_vi_initialize_line PARAMS((void));
 391 extern void _rl_vi_reset_last PARAMS((void));
 392 extern void _rl_vi_set_last PARAMS((int, int, int));
 393 extern int _rl_vi_textmod_command PARAMS((int));
 394 extern void _rl_vi_done_inserting PARAMS((void));
 395 extern int _rl_vi_domove_callback PARAMS((_rl_vimotion_cxt *));
 396
 397 /*************************************************************************
 398  * Undocumented private variables                                        *
 399  *************************************************************************/
 400
 401 /* bind.c */
 402 extern const char * const _rl_possible_control_prefixes[];
 403 extern const char * const _rl_possible_meta_prefixes[];
 404
 405 /* callback.c */
 406 extern _rl_callback_func_t *_rl_callback_func;
 407 extern _rl_callback_generic_arg *_rl_callback_data;
 408
 409 /* complete.c */
 410 extern int _rl_complete_show_all;
 411 extern int _rl_complete_show_unmodified;
 412 extern int _rl_complete_mark_directories;
 413 extern int _rl_complete_mark_symlink_dirs;
 414 extern int _rl_completion_prefix_display_length;
 415 extern int _rl_completion_columns;
 416 extern int _rl_print_completions_horizontally;
 417 extern int _rl_completion_case_fold;
 418 extern int _rl_completion_case_map;
 419 extern int _rl_match_hidden_files;
 420 extern int _rl_page_completions;
 421 extern int _rl_skip_completed_text;
 422 extern int _rl_menu_complete_prefix_first;
 423
 424 /* display.c */
 425 extern int _rl_vis_botlin;
 426 extern int _rl_last_c_pos;
 427 extern int _rl_suppress_redisplay;
 428 extern int _rl_want_redisplay;
 429
 430 /* isearch.c */
 431 extern char *_rl_isearch_terminators;
 432
 433 extern _rl_search_cxt *_rl_iscxt;
 434
 435 /* macro.c */
 436 extern char *_rl_executing_macro;
 437
 438 /* misc.c */
 439 extern int _rl_history_preserve_point;
 440 extern int _rl_history_saved_point;
 441
 442 extern _rl_arg_cxt _rl_argcxt;
 443
 444 /* readline.c */
 445 extern int _rl_echoing_p;
 446 extern int _rl_horizontal_scroll_mode;
 447 extern int _rl_mark_modified_lines;
 448 extern int _rl_bell_preference;
 449 extern int _rl_meta_flag;
 450 extern int _rl_convert_meta_chars_to_ascii;
 451 extern int _rl_output_meta_chars;
 452 extern int _rl_bind_stty_chars;
 453 extern int _rl_revert_all_at_newline;
 454 extern int _rl_echo_control_chars;
 455 extern char *_rl_comment_begin;
 456 extern unsigned char _rl_parsing_conditionalized_out;
 457 extern Keymap _rl_keymap;
 458 extern FILE *_rl_in_stream;
 459 extern FILE *_rl_out_stream;
 460 extern int _rl_last_command_was_kill;
 461 extern int _rl_eof_char;
 462 extern procenv_t _rl_top_level;
 463 extern _rl_keyseq_cxt *_rl_kscxt;
 464
 465 /* search.c */
 466 extern _rl_search_cxt *_rl_nscxt;
 467
 468 /* signals.c */
 469 extern int _rl_interrupt_immediately;
 470 extern int volatile _rl_caught_signal;
 471
 472 extern int _rl_echoctl;
 473
 474 extern int _rl_intr_char;
 475 extern int _rl_quit_char;
 476 extern int _rl_susp_char;
 477
 478 /* terminal.c */
 479 extern int _rl_enable_keypad;
 480 extern int _rl_enable_meta;
 481 extern char *_rl_term_clreol;
 482 extern char *_rl_term_clrpag;
 483 extern char *_rl_term_im;
 484 extern char *_rl_term_ic;
 485 extern char *_rl_term_ei;
 486 extern char *_rl_term_DC;
 487 extern char *_rl_term_up;
 488 extern char *_rl_term_dc;
 489 extern char *_rl_term_cr;
 490 extern char *_rl_term_IC;
 491 extern char *_rl_term_forward_char;
 492 extern int _rl_screenheight;
 493 extern int _rl_screenwidth;
 494 extern int _rl_screenchars;
 495 extern int _rl_terminal_can_insert;
 496 extern int _rl_term_autowrap;
 497
 498 /* undo.c */
 499 extern int _rl_doing_an_undo;
 500 extern int _rl_undo_group_level;
 501
 502 /* vi_mode.c */
 503 extern int _rl_vi_last_command;
 504 extern _rl_vimotion_cxt *_rl_vimvcxt;
 505
 506 #endif /* _RL_PRIVATE_H_ */