readline/readline.h

   1 /* Readline.h -- the names of functions callable from within readline. */
   2
   3 #if !defined (_READLINE_H_)
   4 #define _READLINE_H_
   5
   6 #include "keymaps.h"
   7
   8 #if !defined (__FUNCTION_DEF)
   9 typedef int Function ();
  10 #define __FUNCTION_DEF
  11 #endif /* __FUNCTION_DEF */
  12
  13 /* The functions for manipulating the text of the line within readline.
  14 Most of these functions are bound to keys by default. */
  15 extern int
  16   rl_beg_of_line (), rl_backward (), rl_delete (), rl_end_of_line (),
  17   rl_forward (), ding (), rl_backward (), rl_newline (), rl_kill_line (),
  18   rl_clear_screen (), rl_get_next_history (), rl_get_previous_history (),
  19   rl_quoted_insert (), rl_reverse_search_history (), rl_transpose_chars (),
  20   rl_unix_line_discard (), rl_quoted_insert (), rl_unix_word_rubout (),
  21   rl_yank (), rl_rubout (), rl_backward_word (), rl_kill_word (),
  22   rl_forward_word (), rl_tab_insert (), rl_yank_pop (), rl_yank_nth_arg (),
  23   rl_backward_kill_word (), rl_backward_kill_line (), rl_transpose_words (),
  24   rl_complete (), rl_possible_completions (), rl_do_lowercase_version (),
  25   rl_digit_argument (), rl_universal_argument (), rl_abort (),
  26   rl_undo_command (), rl_revert_line (), rl_beginning_of_history (),
  27   rl_end_of_history (), rl_forward_search_history (), rl_insert (),
  28   rl_upcase_word (), rl_downcase_word (), rl_capitalize_word (),
  29   rl_restart_output (), rl_re_read_init_file (), rl_dump_functions ();
  30
  31 /* These are *both* defined even when VI_MODE is not. */
  32 extern int rl_vi_editing_mode (), rl_emacs_editing_mode ();
  33
  34 #if defined (VI_MODE)
  35 /* Things for vi mode. */
  36 extern int
  37   rl_vi_movement_mode (), rl_vi_insertion_mode (), rl_vi_arg_digit (),
  38   rl_vi_prev_word (), rl_vi_next_word (), rl_vi_char_search (),
  39   rl_vi_eof_maybe (), rl_vi_append_mode (), rl_vi_put (),
  40   rl_vi_append_eol (), rl_vi_insert_beg (), rl_vi_delete (), rl_vi_comment (),
  41   rl_vi_first_print (), rl_vi_fword (), rl_vi_fWord (), rl_vi_bword (),
  42   rl_vi_bWord (), rl_vi_eword (), rl_vi_eWord (), rl_vi_end_word (),
  43   rl_vi_change_case (), rl_vi_match (), rl_vi_bracktype (),
  44   rl_vi_change_char (), rl_vi_yank_arg (), rl_vi_search (),
  45   rl_vi_search_again (), rl_vi_dosearch (), rl_vi_subst (),
  46   rl_vi_overstrike (), rl_vi_overstrike_delete (), rl_vi_replace(),
  47   rl_vi_column (), rl_vi_delete_to (), rl_vi_change_to (), rl_vi_yank_to (),
  48   rl_vi_complete (), rl_vi_fetch_history ();
  49 #endif /* VI_MODE */
  50
  51 /* Keyboard macro commands. */
  52 extern int
  53 rl_start_kbd_macro (), rl_end_kbd_macro (), rl_call_last_kbd_macro ();
  54
  55 extern int rl_arrow_keys(), rl_refresh_line ();
  56
  57 /* Maintaining the state of undo.  We remember individual deletes and inserts
  58    on a chain of things to do. */
  59
  60 /* The actions that undo knows how to undo.  Notice that UNDO_DELETE means
  61    to insert some text, and UNDO_INSERT means to delete some text.   I.e.,
  62    the code tells undo what to undo, not how to undo it. */
  63 enum undo_code { UNDO_DELETE, UNDO_INSERT, UNDO_BEGIN, UNDO_END };
  64
  65 /* What an element of THE_UNDO_LIST looks like. */
  66 typedef struct undo_list {
  67   struct undo_list *next;
  68   int start, end;               /* Where the change took place. */
  69   char *text;                   /* The text to insert, if undoing a delete. */
  70   enum undo_code what;          /* Delete, Insert, Begin, End. */
  71 } UNDO_LIST;
  72
  73 /* The current undo list for RL_LINE_BUFFER. */
  74 extern UNDO_LIST *rl_undo_list;
  75
  76 /* The data structure for mapping textual names to code addresses. */
  77 typedef struct {
  78   char *name;
  79   Function *function;
  80 } FUNMAP;
  81
  82 extern FUNMAP **funmap;
  83
  84 /* **************************************************************** */
  85 /*                                                                  */
  86 /*                      Well Published Variables                    */
  87 /*                                                                  */
  88 /* **************************************************************** */
  89
  90 /* The name of the calling program.  You should initialize this to
  91    whatever was in argv[0].  It is used when parsing conditionals. */
  92 extern char *rl_readline_name;
  93
  94 /* The line buffer that is in use. */
  95 extern char *rl_line_buffer;
  96
  97 /* The location of point, and end. */
  98 extern int rl_point, rl_end;
  99
 100 /* The name of the terminal to use. */
 101 extern char *rl_terminal_name;
 102
 103 /* The input and output streams. */
 104 extern FILE *rl_instream, *rl_outstream;
 105
 106 /* The basic list of characters that signal a break between words for the
 107    completer routine.  The initial contents of this variable is what
 108    breaks words in the shell, i.e. "n\"\\'`@$>". */
 109 extern char *rl_basic_word_break_characters;
 110
 111 /* The list of characters that signal a break between words for
 112    rl_complete_internal.  The default list is the contents of
 113    rl_basic_word_break_characters.  */
 114 extern char *rl_completer_word_break_characters;
 115
 116 /* List of characters that are word break characters, but should be left
 117    in TEXT when it is passed to the completion function.  The shell uses
 118    this to help determine what kind of completing to do. */
 119 extern char *rl_special_prefixes;
 120
 121 /* Pointer to the generator function for completion_matches ().
 122    NULL means to use filename_entry_function (), the default filename
 123    completer. */
 124 extern Function *rl_completion_entry_function;
 125
 126 /* If rl_ignore_some_completions_function is non-NULL it is the address
 127    of a function to call after all of the possible matches have been
 128    generated, but before the actual completion is done to the input line.
 129    The function is called with one argument; a NULL terminated array
 130    of (char *).  If your function removes any of the elements, they
 131    must be free()'ed. */
 132 extern Function *rl_ignore_some_completions_function;
 133
 134 /* Pointer to alternative function to create matches.
 135    Function is called with TEXT, START, and END.
 136    START and END are indices in RL_LINE_BUFFER saying what the boundaries
 137    of TEXT are.
 138    If this function exists and returns NULL then call the value of
 139    rl_completion_entry_function to try to match, otherwise use the
 140    array of strings returned. */
 141 extern Function *rl_attempted_completion_function;
 142
 143 /* If non-zero, then this is the address of a function to call just
 144    before readline_internal () prints the first prompt. */
 145 extern Function *rl_startup_hook;
 146
 147 /* If non-zero, then this is the address of a function to call when
 148    completing on a directory name.  The function is called with
 149    the address of a string (the current directory name) as an arg. */
 150 extern Function *rl_symbolic_link_hook;
 151
 152 /* Non-zero means that modified history lines are preceded
 153    with an asterisk. */
 154 extern int rl_show_star;
 155
 156
 157 /* **************************************************************** */
 158 /*                                                                  */
 159 /*             Tilde Variables That Can be Externally Set           */
 160 /*                                                                  */
 161 /* **************************************************************** */
 162
 163 /* If non-null, this contains the address of a function to call if the
 164    standard meaning for expanding a tilde fails.  The function is called
 165    with the text (sans tilde, as in "foo"), and returns a malloc()'ed string
 166    which is the expansion, or a NULL pointer if there is no expansion. */
 167 extern Function *tilde_expansion_failure_hook;
 168
 169 /* When non-null, this is a NULL terminated array of strings which
 170    are duplicates for a tilde prefix.  Bash uses this to expand
 171    `=~' and `:~'. */
 172 extern char **tilde_additional_prefixes;
 173
 174 /* When non-null, this is a NULL terminated array of strings which match
 175    the end of a username, instead of just "/".  Bash sets this to
 176    `/' and `:'. */
 177 extern char **tilde_additional_suffixes;
 178
 179 /* **************************************************************** */
 180 /*                                                                  */
 181 /*                      Well Published Functions                    */
 182 /*                                                                  */
 183 /* **************************************************************** */
 184
 185 /* Read a line of input.  Prompt with PROMPT.  A NULL PROMPT means none. */
 186 extern char *readline ();
 187
 188 /* Return an array of strings which are the result of repeatadly calling
 189    FUNC with TEXT. */
 190 extern char **completion_matches ();
 191
 192 /* rl_add_defun (char *name, Function *function, int key)
 193    Add NAME to the list of named functions.  Make FUNCTION
 194    be the function that gets called.
 195    If KEY is not -1, then bind it. */
 196 extern int rl_add_defun ();
 197
 198 #endif /* _READLINE_H_ */