/* funmap.c -- attach names to functions. */

/* Copyright (C) 1987-2021 Free Software Foundation, Inc.

   This file is part of the GNU Readline Library (Readline), a library
   for reading lines of text with interactive input and history editing.      

   Readline is free software: you can redistribute it and/or modify
   it under the terms of the GNU General Public License as published by
   the Free Software Foundation, either version 3 of the License, or
   (at your option) any later version.

   Readline is distributed in the hope that it will be useful,
   but WITHOUT ANY WARRANTY; without even the implied warranty of
   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
   GNU General Public License for more details.

   You should have received a copy of the GNU General Public License
   along with Readline.  If not, see <http://www.gnu.org/licenses/>.
*/

#define READLINE_LIBRARY

#if defined (HAVE_CONFIG_H)
#  include <config.h>
#endif

#if !defined (BUFSIZ)
#include <stdio.h>
#endif /* BUFSIZ */

#if defined (HAVE_STDLIB_H)
#  include <stdlib.h>
#else
#  include "ansi_stdlib.h"
#endif /* HAVE_STDLIB_H */

#include "rlconf.h"
#include "readline.h"

#include "xmalloc.h"

#ifdef __STDC__
typedef int QSFUNC (const void *, const void *);
#else
typedef int QSFUNC ();
#endif

extern int _rl_qsort_string_compare (char **, char **);

FUNMAP **funmap;
static int funmap_size;
static int funmap_entry;

/* After initializing the function map, this is the index of the first
   program specific function. */
int funmap_program_specific_entry_start;

static const FUNMAP default_funmap[] = {
  { "abort", rl_abort },
  { "accept-line", rl_newline },
  { "arrow-key-prefix", rl_arrow_keys },
  { "backward-byte", rl_backward_byte },
  { "backward-char", rl_backward_char },
  { "backward-delete-char", rl_rubout },
  { "backward-kill-line", rl_backward_kill_line },
  { "backward-kill-word", rl_backward_kill_word },
  { "backward-word", rl_backward_word },
  { "beginning-of-history", rl_beginning_of_history },
  { "beginning-of-line", rl_beg_of_line },
  { "bracketed-paste-begin", rl_bracketed_paste_begin },
  { "call-last-kbd-macro", rl_call_last_kbd_macro },
  { "capitalize-word", rl_capitalize_word },
  { "character-search", rl_char_search },
  { "character-search-backward", rl_backward_char_search },
  { "clear-display", rl_clear_display },
  { "clear-screen", rl_clear_screen },
  { "complete", rl_complete },
  { "copy-backward-word", rl_copy_backward_word },
  { "copy-forward-word", rl_copy_forward_word },
  { "copy-region-as-kill", rl_copy_region_to_kill },
  { "delete-char", rl_delete },
  { "delete-char-or-list", rl_delete_or_show_completions },
  { "delete-horizontal-space", rl_delete_horizontal_space },
  { "digit-argument", rl_digit_argument },
  { "do-lowercase-version", rl_do_lowercase_version },
  { "downcase-word", rl_downcase_word },
  { "dump-functions", rl_dump_functions },
  { "dump-macros", rl_dump_macros },
  { "dump-variables", rl_dump_variables },
  { "emacs-editing-mode", rl_emacs_editing_mode },
  { "end-kbd-macro", rl_end_kbd_macro },
  { "end-of-history", rl_end_of_history },
  { "end-of-line", rl_end_of_line },
  { "exchange-point-and-mark", rl_exchange_point_and_mark },
  { "fetch-history", rl_fetch_history },
  { "forward-backward-delete-char", rl_rubout_or_delete },
  { "forward-byte", rl_forward_byte },
  { "forward-char", rl_forward_char },
  { "forward-search-history", rl_forward_search_history },
  { "forward-word", rl_forward_word },
  { "history-search-backward", rl_history_search_backward },
  { "history-search-forward", rl_history_search_forward },
  { "history-substring-search-backward", rl_history_substr_search_backward },
  { "history-substring-search-forward", rl_history_substr_search_forward },
  { "insert-comment", rl_insert_comment },
  { "insert-completions", rl_insert_completions },
  { "kill-whole-line", rl_kill_full_line },
  { "kill-line", rl_kill_line },
  { "kill-region", rl_kill_region },
  { "kill-word", rl_kill_word },
  { "menu-complete", rl_menu_complete },
  { "menu-complete-backward", rl_backward_menu_complete },
  { "next-history", rl_get_next_history },
  { "next-screen-line", rl_next_screen_line },
  { "non-incremental-forward-search-history", rl_noninc_forward_search },
  { "non-incremental-reverse-search-history", rl_noninc_reverse_search },
  { "non-incremental-forward-search-history-again", rl_noninc_forward_search_again },
  { "non-incremental-reverse-search-history-again", rl_noninc_reverse_search_again },
  { "old-menu-complete", rl_old_menu_complete },
  { "operate-and-get-next", rl_operate_and_get_next },
  { "overwrite-mode", rl_overwrite_mode },
#if defined (_WIN32)
  { "paste-from-clipboard", rl_paste_from_clipboard },
#endif
  { "possible-completions", rl_possible_completions },
  { "previous-history", rl_get_previous_history },
  { "previous-screen-line", rl_previous_screen_line },
  { "print-last-kbd-macro", rl_print_last_kbd_macro },
  { "quoted-insert", rl_quoted_insert },
  { "re-read-init-file", rl_re_read_init_file },
  { "redraw-current-line", rl_refresh_line},
  { "reverse-search-history", rl_reverse_search_history },
  { "revert-line", rl_revert_line },
  { "self-insert", rl_insert },
  { "set-mark", rl_set_mark },
  { "skip-csi-sequence", rl_skip_csi_sequence },
  { "start-kbd-macro", rl_start_kbd_macro },
  { "tab-insert", rl_tab_insert },
  { "tilde-expand", rl_tilde_expand },
  { "transpose-chars", rl_transpose_chars },
  { "transpose-words", rl_transpose_words },
  { "tty-status", rl_tty_status },
  { "undo", rl_undo_command },
  { "universal-argument", rl_universal_argument },
  { "unix-filename-rubout", rl_unix_filename_rubout },
  { "unix-line-discard", rl_unix_line_discard },
  { "unix-word-rubout", rl_unix_word_rubout },
  { "upcase-word", rl_upcase_word },
  { "yank", rl_yank },
  { "yank-last-arg", rl_yank_last_arg },
  { "yank-nth-arg", rl_yank_nth_arg },
  { "yank-pop", rl_yank_pop },

#if defined (VI_MODE)
  { "vi-append-eol", rl_vi_append_eol },
  { "vi-append-mode", rl_vi_append_mode },
  { "vi-arg-digit", rl_vi_arg_digit },
  { "vi-back-to-indent", rl_vi_back_to_indent },
  { "vi-backward-bigword", rl_vi_bWord },
  { "vi-backward-word", rl_vi_bword },
  { "vi-bWord", rl_vi_bWord },
  { "vi-bword", rl_vi_bword },	/* BEWARE: name matching is case insensitive */
  { "vi-change-case", rl_vi_change_case },
  { "vi-change-char", rl_vi_change_char },
  { "vi-change-to", rl_vi_change_to },
  { "vi-char-search", rl_vi_char_search },
  { "vi-column", rl_vi_column },
  { "vi-complete", rl_vi_complete },
  { "vi-delete", rl_vi_delete },
  { "vi-delete-to", rl_vi_delete_to },
  { "vi-eWord", rl_vi_eWord },
  { "vi-editing-mode", rl_vi_editing_mode },
  { "vi-end-bigword", rl_vi_eWord },
  { "vi-end-word", rl_vi_end_word },
  { "vi-eof-maybe", rl_vi_eof_maybe },
  { "vi-eword", rl_vi_eword },	/* BEWARE: name matching is case insensitive */
  { "vi-fWord", rl_vi_fWord },
  { "vi-fetch-history", rl_vi_fetch_history },
  { "vi-first-print", rl_vi_first_print },
  { "vi-forward-bigword", rl_vi_fWord },
  { "vi-forward-word", rl_vi_fword },
  { "vi-fword", rl_vi_fword },	/* BEWARE: name matching is case insensitive */
  { "vi-goto-mark", rl_vi_goto_mark },
  { "vi-insert-beg", rl_vi_insert_beg },
  { "vi-insertion-mode", rl_vi_insert_mode },
  { "vi-match", rl_vi_match },
  { "vi-movement-mode", rl_vi_movement_mode },
  { "vi-next-word", rl_vi_next_word },
  { "vi-overstrike", rl_vi_overstrike },
  { "vi-overstrike-delete", rl_vi_overstrike_delete },
  { "vi-prev-word", rl_vi_prev_word },
  { "vi-put", rl_vi_put },
  { "vi-redo", rl_vi_redo },
  { "vi-replace", rl_vi_replace },
  { "vi-rubout", rl_vi_rubout },
  { "vi-search", rl_vi_search },
  { "vi-search-again", rl_vi_search_again },
  { "vi-set-mark", rl_vi_set_mark },
  { "vi-subst", rl_vi_subst },
  { "vi-tilde-expand", rl_vi_tilde_expand },
  { "vi-undo", rl_vi_undo },
  { "vi-unix-word-rubout", rl_vi_unix_word_rubout },
  { "vi-yank-arg", rl_vi_yank_arg },
  { "vi-yank-pop", rl_vi_yank_pop },
  { "vi-yank-to", rl_vi_yank_to },
#endif /* VI_MODE */

 {(char *)NULL, (rl_command_func_t *)NULL }
};

int
rl_add_funmap_entry (const char *name, rl_command_func_t *function)
{
  if (funmap_entry + 2 >= funmap_size)
    {
      funmap_size += 64;
      funmap = (FUNMAP **)xrealloc (funmap, funmap_size * sizeof (FUNMAP *));
    }
  
  funmap[funmap_entry] = (FUNMAP *)xmalloc (sizeof (FUNMAP));
  funmap[funmap_entry]->name = name;
  funmap[funmap_entry]->function = function;

  funmap[++funmap_entry] = (FUNMAP *)NULL;
  return funmap_entry;
}

static int funmap_initialized;

/* Make the funmap contain all of the default entries. */
void
rl_initialize_funmap (void)
{
  register int i;

  if (funmap_initialized)
    return;

  for (i = 0; default_funmap[i].name; i++)
    rl_add_funmap_entry (default_funmap[i].name, default_funmap[i].function);

  funmap_initialized = 1;
  funmap_program_specific_entry_start = i;
}

/* Produce a NULL terminated array of known function names.  The array
   is sorted.  The array itself is allocated, but not the strings inside.
   You should free () the array when you done, but not the pointers. */
const char **
rl_funmap_names (void)
{
  const char **result;
  int result_size, result_index;

  /* Make sure that the function map has been initialized. */
  rl_initialize_funmap ();

  for (result_index = result_size = 0, result = (const char **)NULL; funmap[result_index]; result_index++)
    {
      if (result_index + 2 > result_size)
	{
	  result_size += 20;
	  result = (const char **)xrealloc (result, result_size * sizeof (char *));
	}

      result[result_index] = funmap[result_index]->name;
      result[result_index + 1] = (char *)NULL;
    }

  qsort (result, result_index, sizeof (char *), (QSFUNC *)_rl_qsort_string_compare);
  return (result);
}