/* readline.c -- a general facility for reading lines of input
with emacs style editing and completion. */
-/* Copyright 1987, 1989, 1991, 1992 Free Software Foundation, Inc.
+/* Copyright (C) 1987-2002 Free Software Foundation, Inc.
This file is part of the GNU Readline Library, a library for
reading lines of text with interactive input and history editing.
The GNU Readline Library 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 1, or
+ as published by the Free Software Foundation; either version 2, or
(at your option) any later version.
The GNU Readline Library is distributed in the hope that it will be
The GNU General Public License is often shipped with GNU software, and
is generally kept in a file called COPYING or LICENSE. If you do not
have a copy of the license, write to the Free Software Foundation,
- 675 Mass Ave, Cambridge, MA 02139, USA. */
+ 59 Temple Place, Suite 330, Boston, MA 02111 USA. */
+#define READLINE_LIBRARY
-#include "sysdep.h"
-#include <stdio.h>
-#include <fcntl.h>
-#ifndef NO_SYS_FILE
-#include <sys/file.h>
+#if defined (HAVE_CONFIG_H)
+# include <config.h>
#endif
-#include <signal.h>
-/* This is needed to include support for TIOCGWINSZ and window resizing. */
-#if defined (OSF1) || defined (BSD386) || defined (_386BSD) || defined (AIX)
-# include <sys/ioctl.h>
-#endif /* OSF1 */
+#include <sys/types.h>
+#include "posixstat.h"
+#include <fcntl.h>
+#if defined (HAVE_SYS_FILE_H)
+# include <sys/file.h>
+#endif /* HAVE_SYS_FILE_H */
#if defined (HAVE_UNISTD_H)
# include <unistd.h>
-#endif
-\f
-#include <errno.h>
-/* Not all systems declare ERRNO in errno.h... and some systems #define it! */
-#if !defined (errno)
-extern int errno;
-#endif /* !errno */
+#endif /* HAVE_UNISTD_H */
-extern char * getenv ();
+#if defined (HAVE_STDLIB_H)
+# include <stdlib.h>
+#else
+# include "ansi_stdlib.h"
+#endif /* HAVE_STDLIB_H */
+
+#if defined (HAVE_LOCALE_H)
+# include <locale.h>
+#endif
-#include <setjmp.h>
-#include <sys/stat.h>
+#include <stdio.h>
+#include "posixjmp.h"
/* System-specific feature definitions and include files. */
#include "rldefs.h"
+#include "rlmbutil.h"
+
+#if defined (__EMX__)
+# define INCL_DOSPROCESS
+# include <os2.h>
+#endif /* __EMX__ */
/* Some standard library routines. */
#include "readline.h"
#include "history.h"
-/* NOTE: Functions and variables prefixed with `_rl_' are
- pseudo-global: they are global so they can be shared
- between files in the readline library, but are not intended
- to be visible to readline callers. */
-
-/* Functions imported from other files in the library. */
-extern char *tgetstr ();
-extern void rl_prep_terminal (), rl_deprep_terminal ();
-extern Function *rl_function_of_keyseq ();
-extern char *tilde_expand ();
+#include "rlprivate.h"
+#include "rlshell.h"
+#include "xmalloc.h"
-/* External redisplay functions and variables from display.c */
-extern void rl_redisplay ();
-extern void _rl_move_vert ();
-
-extern void _rl_erase_at_end_of_line ();
-extern void _rl_move_cursor_relative ();
+#ifndef RL_LIBRARY_VERSION
+# define RL_LIBRARY_VERSION "4.3"
+#endif
-extern int _rl_vis_botlin;
-extern int _rl_last_c_pos;
-extern int rl_display_fixed;
+#ifndef RL_READLINE_VERSION
+# define RL_READLINE_VERSION 0x0403
+#endif
-/* Variables imported from complete.c. */
-extern char *rl_completer_word_break_characters;
-extern char *rl_basic_word_break_characters;
-extern Function *rl_symbolic_link_hook;
-extern int rl_completion_query_items;
-extern int rl_complete_with_tilde_expansion;
+extern void _rl_free_history_entry PARAMS((HIST_ENTRY *));
/* Forward declarations used in this file. */
-void rl_dispatch ();
-void free_history_entry ();
-void _rl_output_character_function ();
-void _rl_set_screen_size ();
+static char *readline_internal PARAMS((void));
+static void readline_initialize_everything PARAMS((void));
-#if !defined (_GO32_)
-static void readline_default_bindings ();
-#endif /* !_GO32_ */
+static void bind_arrow_keys_internal PARAMS((Keymap));
+static void bind_arrow_keys PARAMS((void));
-#if defined (_GO32_)
-# include <sys/pc.h>
-# undef HANDLE_SIGNALS
-#endif /* _GO32_ */
+static void readline_default_bindings PARAMS((void));
-\f
/* **************************************************************** */
/* */
/* Line editing input utility */
/* */
/* **************************************************************** */
-static char *LibraryVersion = "2.0 (Cygnus)";
+const char *rl_library_version = RL_LIBRARY_VERSION;
+
+int rl_readline_version = RL_READLINE_VERSION;
+
+/* True if this is `real' readline as opposed to some stub substitute. */
+int rl_gnu_readline_p = 1;
/* A pointer to the keymap that is currently in use.
By default, it is the standard emacs keymap. */
/* The current style of editing. */
int rl_editing_mode = emacs_mode;
+/* The current insert mode: input (the default) or overwrite */
+int rl_insert_mode = RL_IM_DEFAULT;
+
+/* Non-zero if we called this function from _rl_dispatch(). It's present
+ so functions can find out whether they were called from a key binding
+ or directly from an application. */
+int rl_dispatching;
+
/* Non-zero if the previous command was a kill command. */
-static int last_command_was_kill = 0;
+int _rl_last_command_was_kill = 0;
/* The current value of the numeric argument specified by the user. */
int rl_numeric_arg = 1;
int rl_arg_sign = 1;
/* Non-zero means we have been called at least once before. */
-static int rl_initialized = 0;
+static int rl_initialized;
+#if 0
/* If non-zero, this program is running in an EMACS buffer. */
-static char *running_in_emacs = (char *)NULL;
+static int running_in_emacs;
+#endif
+
+/* Flags word encapsulating the current readline state. */
+int rl_readline_state = RL_STATE_NONE;
/* The current offset in the current input line. */
int rl_point;
int rl_done;
/* The last function executed by readline. */
-Function *rl_last_func = (Function *)NULL;
+rl_command_func_t *rl_last_func = (rl_command_func_t *)NULL;
/* Top level environment for readline_internal (). */
-static jmp_buf readline_top_level;
+procenv_t readline_top_level;
/* The streams we interact with. */
-static FILE *in_stream, *out_stream;
+FILE *_rl_in_stream, *_rl_out_stream;
/* The names of the streams that we do input and output to. */
FILE *rl_instream = (FILE *)NULL;
FILE *rl_outstream = (FILE *)NULL;
-/* Non-zero means echo characters as they are read. */
-int readline_echoing_p = 1;
+/* Non-zero means echo characters as they are read. Defaults to no echo;
+ set to 1 if there is a controlling terminal, we can get its attributes,
+ and the attributes include `echo'. Look at rltty.c:prepare_terminal_settings
+ for the code that sets it. */
+int readline_echoing_p = 0;
/* Current prompt. */
-char *rl_prompt;
+char *rl_prompt = (char *)NULL;
+int rl_visible_prompt_length = 0;
+
+/* Set to non-zero by calling application if it has already printed rl_prompt
+ and does not want readline to do it the first time. */
+int rl_already_prompted = 0;
/* The number of characters read in order to type this complete command. */
int rl_key_sequence_length = 0;
/* If non-zero, then this is the address of a function to call just
- before readline_internal () prints the first prompt. */
-Function *rl_startup_hook = (Function *)NULL;
+ before readline_internal_setup () prints the first prompt. */
+rl_hook_func_t *rl_startup_hook = (rl_hook_func_t *)NULL;
+
+/* If non-zero, this is the address of a function to call just before
+ readline_internal_setup () returns and readline_internal starts
+ reading input characters. */
+rl_hook_func_t *rl_pre_input_hook = (rl_hook_func_t *)NULL;
/* What we use internally. You should always refer to RL_LINE_BUFFER. */
static char *the_line;
int rl_pending_input = 0;
/* Pointer to a useful terminal name. */
-char *rl_terminal_name = (char *)NULL;
+const char *rl_terminal_name = (const char *)NULL;
/* Non-zero means to always use horizontal scrolling in line display. */
int _rl_horizontal_scroll_mode = 0;
/* Non-zero means to display an asterisk at the starts of history lines
which have been modified. */
int _rl_mark_modified_lines = 0;
-
-/* Non-zero means to use a visible bell if one is available rather than
- simply ringing the terminal bell. */
-int _rl_prefer_visible_bell = 0;
+
+/* The style of `bell' notification preferred. This can be set to NO_BELL,
+ AUDIBLE_BELL, or VISIBLE_BELL. */
+int _rl_bell_preference = AUDIBLE_BELL;
+/* String inserted into the line by rl_insert_comment (). */
+char *_rl_comment_begin;
+
+/* Keymap holding the function currently being executed. */
+Keymap rl_executing_keymap;
+
+/* Non-zero means to erase entire line, including prompt, on empty input lines. */
+int rl_erase_empty_line = 0;
+
+/* Non-zero means to read only this many characters rather than up to a
+ character bound to accept-line. */
+int rl_num_chars_to_read;
+
/* Line buffer and maintenence. */
char *rl_line_buffer = (char *)NULL;
int rl_line_buffer_len = 0;
-#define DEFAULT_BUFFER_SIZE 256
-#if defined (VISIBLE_STATS)
-int rl_visible_stats = 0;
-#endif /* VISIBLE_STATS */
+/* Forward declarations used by the display, termcap, and history code. */
-\f
/* **************************************************************** */
/* */
/* `Forward' declarations */
parser directives. */
unsigned char _rl_parsing_conditionalized_out = 0;
-/* Non-zero means to save keys that we dispatch on in a kbd macro. */
-static int defining_kbd_macro = 0;
-
/* Non-zero means to convert characters with the meta bit set to
escape-prefixed characters so we can indirect through
emacs_meta_keymap or vi_escape_keymap. */
int _rl_convert_meta_chars_to_ascii = 1;
-static int doing_an_undo;
-\f
+/* Non-zero means to output characters with the meta bit set directly
+ rather than as a meta-prefixed escape sequence. */
+int _rl_output_meta_chars = 0;
+
/* **************************************************************** */
/* */
/* Top Level Functions */
/* Non-zero means treat 0200 bit in terminal input as Meta bit. */
int _rl_meta_flag = 0; /* Forward declaration */
-/* Read a line of input. Prompt with PROMPT. A NULL PROMPT means
+/* Set up the prompt and expand it. Called from readline() and
+ rl_callback_handler_install (). */
+int
+rl_set_prompt (prompt)
+ const char *prompt;
+{
+ FREE (rl_prompt);
+ rl_prompt = prompt ? savestring (prompt) : (char *)NULL;
+
+ rl_visible_prompt_length = rl_expand_prompt (rl_prompt);
+ return 0;
+}
+
+/* Read a line of input. Prompt with PROMPT. An empty PROMPT means
none. A return value of NULL means that EOF was encountered. */
char *
readline (prompt)
- char *prompt;
+ const char *prompt;
{
- char *readline_internal ();
char *value;
- rl_prompt = prompt;
-
/* If we are at EOF return a NULL string. */
if (rl_pending_input == EOF)
{
- rl_pending_input = 0;
+ rl_clear_pending_input ();
return ((char *)NULL);
}
+ rl_set_prompt (prompt);
+
rl_initialize ();
- rl_prep_terminal (_rl_meta_flag);
+ (*rl_prep_term_function) (_rl_meta_flag);
#if defined (HANDLE_SIGNALS)
rl_set_signals ();
#endif
value = readline_internal ();
- rl_deprep_terminal ();
+ (*rl_deprep_term_function) ();
#if defined (HANDLE_SIGNALS)
rl_clear_signals ();
return (value);
}
-/* Read a line of input from the global rl_instream, doing output on
- the global rl_outstream.
- If rl_prompt is non-null, then that is our prompt. */
-char *
-readline_internal ()
-{
- int lastc, c, eof_found;
+#if defined (READLINE_CALLBACKS)
+# define STATIC_CALLBACK
+#else
+# define STATIC_CALLBACK static
+#endif
- in_stream = rl_instream;
- out_stream = rl_outstream;
+STATIC_CALLBACK void
+readline_internal_setup ()
+{
+ char *nprompt;
- lastc = -1;
- eof_found = 0;
+ _rl_in_stream = rl_instream;
+ _rl_out_stream = rl_outstream;
if (rl_startup_hook)
(*rl_startup_hook) ();
- if (!readline_echoing_p)
+ /* If we're not echoing, we still want to at least print a prompt, because
+ rl_redisplay will not do it for us. If the calling application has a
+ custom redisplay function, though, let that function handle it. */
+ if (readline_echoing_p == 0 && rl_redisplay_function == rl_redisplay)
{
- if (rl_prompt)
+ if (rl_prompt && rl_already_prompted == 0)
{
- fprintf (out_stream, "%s", rl_prompt);
- fflush (out_stream);
+ nprompt = _rl_strip_prompt (rl_prompt);
+ fprintf (_rl_out_stream, "%s", nprompt);
+ fflush (_rl_out_stream);
+ free (nprompt);
}
}
else
{
- rl_on_new_line ();
- rl_redisplay ();
+ if (rl_prompt && rl_already_prompted)
+ rl_on_new_line_with_prompt ();
+ else
+ rl_on_new_line ();
+ (*rl_redisplay_function) ();
+ }
+
#if defined (VI_MODE)
- if (rl_editing_mode == vi_mode)
- rl_vi_insertion_mode ();
+ if (rl_editing_mode == vi_mode)
+ rl_vi_insertion_mode (1, 0);
#endif /* VI_MODE */
+
+ if (rl_pre_input_hook)
+ (*rl_pre_input_hook) ();
+}
+
+STATIC_CALLBACK char *
+readline_internal_teardown (eof)
+ int eof;
+{
+ char *temp;
+ HIST_ENTRY *entry;
+
+ /* Restore the original of this history line, iff the line that we
+ are editing was originally in the history, AND the line has changed. */
+ entry = current_history ();
+
+ if (entry && rl_undo_list)
+ {
+ temp = savestring (the_line);
+ rl_revert_line (1, 0);
+ entry = replace_history_entry (where_history (), the_line, (histdata_t)NULL);
+ _rl_free_history_entry (entry);
+
+ strcpy (the_line, temp);
+ free (temp);
}
- while (!rl_done)
+ /* At any rate, it is highly likely that this line has an undo list. Get
+ rid of it now. */
+ if (rl_undo_list)
+ rl_free_undo_list ();
+
+ /* Restore normal cursor, if available. */
+ _rl_set_insert_mode (RL_IM_INSERT, 0);
+
+ return (eof ? (char *)NULL : savestring (the_line));
+}
+
+STATIC_CALLBACK int
+#if defined (READLINE_CALLBACKS)
+readline_internal_char ()
+#else
+readline_internal_charloop ()
+#endif
+{
+ static int lastc, eof_found;
+ int c, code, lk;
+
+ lastc = -1;
+ eof_found = 0;
+
+#if !defined (READLINE_CALLBACKS)
+ while (rl_done == 0)
{
- int lk = last_command_was_kill;
- int code;
+#endif
+ lk = _rl_last_command_was_kill;
code = setjmp (readline_top_level);
if (code)
- rl_redisplay ();
+ (*rl_redisplay_function) ();
- if (!rl_pending_input)
+ if (rl_pending_input == 0)
{
/* Then initialize the argument and number of keys read. */
- rl_init_argument ();
+ _rl_init_argument ();
rl_key_sequence_length = 0;
}
+ RL_SETSTATE(RL_STATE_READCMD);
c = rl_read_key ();
+ RL_UNSETSTATE(RL_STATE_READCMD);
/* EOF typed to a non-blank line is a <NL>. */
if (c == EOF && rl_end)
previous character is interpreted as EOF. */
if (((c == _rl_eof_char && lastc != c) || c == EOF) && !rl_end)
{
+#if defined (READLINE_CALLBACKS)
+ RL_SETSTATE(RL_STATE_DONE);
+ return (rl_done = 1);
+#else
eof_found = 1;
break;
+#endif
}
lastc = c;
- rl_dispatch (c, _rl_keymap);
+ _rl_dispatch ((unsigned char)c, _rl_keymap);
- /* If there was no change in last_command_was_kill, then no kill
+ /* If there was no change in _rl_last_command_was_kill, then no kill
has taken place. Note that if input is pending we are reading
a prefix command, so nothing has changed yet. */
- if (!rl_pending_input)
- {
- if (lk == last_command_was_kill)
- last_command_was_kill = 0;
- }
+ if (rl_pending_input == 0 && lk == _rl_last_command_was_kill)
+ _rl_last_command_was_kill = 0;
#if defined (VI_MODE)
/* In vi mode, when you exit insert mode, the cursor moves back
rl_vi_check ();
#endif /* VI_MODE */
- if (!rl_done)
- rl_redisplay ();
- }
-
- /* Restore the original of this history line, iff the line that we
- are editing was originally in the history, AND the line has changed. */
- {
- HIST_ENTRY *entry = current_history ();
-
- if (entry && rl_undo_list)
- {
- char *temp = savestring (the_line);
- rl_revert_line ();
- entry = replace_history_entry (where_history (), the_line,
- (HIST_ENTRY *)NULL);
- free_history_entry (entry);
-
- strcpy (the_line, temp);
- free (temp);
- }
- }
-
- /* At any rate, it is highly likely that this line has an undo list. Get
- rid of it now. */
- if (rl_undo_list)
- free_undo_list ();
-
- if (eof_found)
- return (char *)NULL;
- else
- return (savestring (the_line));
-}
-
-\f
-/* **************************************************************** */
-/* */
-/* Character Input Buffering */
-/* */
-/* **************************************************************** */
-
-static int pop_index = 0, push_index = 0, ibuffer_len = 511;
-static unsigned char ibuffer[512];
+ if (rl_num_chars_to_read && rl_end >= rl_num_chars_to_read)
+ {
+ (*rl_redisplay_function) ();
+ rl_newline (1, '\n');
+ }
-/* Non-null means it is a pointer to a function to run while waiting for
- character input. */
-Function *rl_event_hook = (Function *)NULL;
+ if (rl_done == 0)
+ (*rl_redisplay_function) ();
-#define any_typein (push_index != pop_index)
+ /* If the application writer has told us to erase the entire line if
+ the only character typed was something bound to rl_newline, do so. */
+ if (rl_erase_empty_line && rl_done && rl_last_func == rl_newline &&
+ rl_point == 0 && rl_end == 0)
+ _rl_erase_entire_line ();
-/* Add KEY to the buffer of characters to be read. */
-rl_stuff_char (key)
- int key;
-{
- if (key == EOF)
- {
- key = NEWLINE;
- rl_pending_input = EOF;
+#if defined (READLINE_CALLBACKS)
+ return 0;
+#else
}
- ibuffer[push_index++] = key;
- if (push_index >= ibuffer_len)
- push_index = 0;
-}
-/* Return the amount of space available in the
- buffer for stuffing characters. */
-int
-ibuffer_space ()
-{
- if (pop_index > push_index)
- return (pop_index - push_index);
- else
- return (ibuffer_len - (push_index - pop_index));
+ return (eof_found);
+#endif
}
-/* Get a key from the buffer of characters to be read.
- Return the key in KEY.
- Result is KEY if there was a key, or 0 if there wasn't. */
-int
-rl_get_char (key)
- int *key;
+#if defined (READLINE_CALLBACKS)
+static int
+readline_internal_charloop ()
{
- if (push_index == pop_index)
- return (0);
+ int eof = 1;
- *key = ibuffer[pop_index++];
-
- if (pop_index >= ibuffer_len)
- pop_index = 0;
-
- return (1);
+ while (rl_done == 0)
+ eof = readline_internal_char ();
+ return (eof);
}
+#endif /* READLINE_CALLBACKS */
-/* Stuff KEY into the *front* of the input buffer.
- Returns non-zero if successful, zero if there is
- no space left in the buffer. */
-int
-rl_unget_char (key)
- int key;
+/* Read a line of input from the global rl_instream, doing output on
+ the global rl_outstream.
+ If rl_prompt is non-null, then that is our prompt. */
+static char *
+readline_internal ()
{
- if (ibuffer_space ())
- {
- pop_index--;
- if (pop_index < 0)
- pop_index = ibuffer_len - 1;
- ibuffer[pop_index] = key;
- return (1);
- }
- return (0);
+ int eof;
+
+ readline_internal_setup ();
+ eof = readline_internal_charloop ();
+ return (readline_internal_teardown (eof));
}
-/* If a character is available to be read, then read it
- and stuff it into IBUFFER. Otherwise, just return. */
void
-rl_gather_tyi ()
+_rl_init_line_state ()
{
-#ifdef __GO32__
- char input;
- if (isatty (0))
- {
- int i = rl_getc ();
- if (i != EOF)
- rl_stuff_char (i);
- }
- else if (kbhit () && ibuffer_space ())
- rl_stuff_char (getkey ());
-#else
-
- int tty = fileno (in_stream);
- register int tem, result = -1;
- int chars_avail;
- char input;
-
-#if defined (FIONREAD)
- result = ioctl (tty, FIONREAD, &chars_avail);
-#endif
-
-#if defined (O_NDELAY)
- if (result == -1)
- {
- int flags;
-
- flags = fcntl (tty, F_GETFL, 0);
-
- fcntl (tty, F_SETFL, (flags | O_NDELAY));
- chars_avail = read (tty, &input, 1);
-
- fcntl (tty, F_SETFL, flags);
- if (chars_avail == -1 && errno == EAGAIN)
- return;
- }
-#endif /* O_NDELAY */
-
- /* If there's nothing available, don't waste time trying to read
- something. */
- if (chars_avail == 0)
- return;
-
- tem = ibuffer_space ();
-
- if (chars_avail > tem)
- chars_avail = tem;
-
- /* One cannot read all of the available input. I can only read a single
- character at a time, or else programs which require input can be
- thwarted. If the buffer is larger than one character, I lose.
- Damn! */
- if (tem < ibuffer_len)
- chars_avail = 0;
-
- if (result != -1)
- {
- while (chars_avail--)
- rl_stuff_char (rl_getc (in_stream));
- }
- else
- {
- if (chars_avail)
- rl_stuff_char (input);
- }
-#endif /* def __GO32__/else */
+ rl_point = rl_end = rl_mark = 0;
+ the_line = rl_line_buffer;
+ the_line[0] = 0;
}
-static int next_macro_key ();
-/* Read a key, including pending input. */
-int
-rl_read_key ()
+void
+_rl_set_the_line ()
{
- int c;
-
- rl_key_sequence_length++;
-
- if (rl_pending_input)
- {
- c = rl_pending_input;
- rl_pending_input = 0;
- }
- else
- {
- /* If input is coming from a macro, then use that. */
- if (c = next_macro_key ())
- return (c);
-
- /* If the user has an event function, then call it periodically. */
- if (rl_event_hook)
- {
- while (rl_event_hook && !rl_get_char (&c))
- {
- (*rl_event_hook) ();
- rl_gather_tyi ();
- }
- }
- else
- {
- if (!rl_get_char (&c))
- c = rl_getc (in_stream);
- }
- }
-
- return (c);
+ the_line = rl_line_buffer;
}
-/* Found later in this file. */
-static void add_macro_char (), with_macro_input ();
-
/* Do the command associated with KEY in MAP.
If the associated command is really a keymap, then read
another key, and dispatch into that map. */
-void
-rl_dispatch (key, map)
+int
+_rl_dispatch (key, map)
register int key;
Keymap map;
{
-#if defined (VI_MODE)
- extern int _rl_vi_last_command, _rl_vi_last_repeat, _rl_vi_last_arg_sign;
-#endif
+ return _rl_dispatch_subseq (key, map, 0);
+}
- if (defining_kbd_macro)
- add_macro_char (key);
+int
+_rl_dispatch_subseq (key, map, got_subseq)
+ register int key;
+ Keymap map;
+ int got_subseq;
+{
+ int r, newkey;
+ char *macro;
+ rl_command_func_t *func;
if (META_CHAR (key) && _rl_convert_meta_chars_to_ascii)
{
if (map[ESC].type == ISKMAP)
{
- map = (Keymap)map[ESC].function;
+ if (RL_ISSTATE (RL_STATE_MACRODEF))
+ _rl_add_macro_char (ESC);
+ map = FUNCTION_TO_KEYMAP (map, ESC);
key = UNMETA (key);
rl_key_sequence_length += 2;
- rl_dispatch (key, map);
+ return (_rl_dispatch (key, map));
}
else
- ding ();
- return;
+ rl_ding ();
+ return 0;
}
+ if (RL_ISSTATE (RL_STATE_MACRODEF))
+ _rl_add_macro_char (key);
+
+ r = 0;
switch (map[key].type)
{
case ISFUNC:
- {
- Function *func = map[key].function;
-
- if (func != (Function *)NULL)
- {
- /* Special case rl_do_lowercase_version (). */
- if (func == rl_do_lowercase_version)
- {
- rl_dispatch (to_lower (key), map);
- return;
- }
-
- (*map[key].function)(rl_numeric_arg * rl_arg_sign, key);
-
- /* If we have input pending, then the last command was a prefix
- command. Don't change the state of rl_last_func. Otherwise,
- remember the last command executed in this variable. */
- if (!rl_pending_input)
- rl_last_func = map[key].function;
- }
- else
- {
- rl_abort ();
- return;
- }
- }
+ func = map[key].function;
+ if (func)
+ {
+ /* Special case rl_do_lowercase_version (). */
+ if (func == rl_do_lowercase_version)
+ return (_rl_dispatch (_rl_to_lower (key), map));
+
+ rl_executing_keymap = map;
+
+#if 0
+ _rl_suppress_redisplay = (map[key].function == rl_insert) && _rl_input_available ();
+#endif
+
+ rl_dispatching = 1;
+ RL_SETSTATE(RL_STATE_DISPATCHING);
+ r = (*map[key].function)(rl_numeric_arg * rl_arg_sign, key);
+ RL_UNSETSTATE(RL_STATE_DISPATCHING);
+ rl_dispatching = 0;
+
+ /* If we have input pending, then the last command was a prefix
+ command. Don't change the state of rl_last_func. Otherwise,
+ remember the last command executed in this variable. */
+ if (rl_pending_input == 0 && map[key].function != rl_digit_argument)
+ rl_last_func = map[key].function;
+ }
+ else if (map[ANYOTHERKEY].function)
+ {
+ /* OK, there's no function bound in this map, but there is a
+ shadow function that was overridden when the current keymap
+ was created. Return -2 to note that. */
+ _rl_unget_char (key);
+ return -2;
+ }
+ else if (got_subseq)
+ {
+ /* Return -1 to note that we're in a subsequence, but we don't
+ have a matching key, nor was one overridden. This means
+ we need to back up the recursion chain and find the last
+ subsequence that is bound to a function. */
+ _rl_unget_char (key);
+ return -1;
+ }
+ else
+ {
+ _rl_abort_internal ();
+ return -1;
+ }
break;
case ISKMAP:
- if (map[key].function != (Function *)NULL)
+ if (map[key].function != 0)
{
- int newkey;
+#if defined (VI_MODE)
+ /* The only way this test will be true is if a subsequence has been
+ bound starting with ESC, generally the arrow keys. What we do is
+ check whether there's input in the queue, which there generally
+ will be if an arrow key has been pressed, and, if there's not,
+ just dispatch to (what we assume is) rl_vi_movement_mode right
+ away. This is essentially an input test with a zero timeout. */
+ if (rl_editing_mode == vi_mode && key == ESC && map == vi_insertion_keymap
+ && _rl_input_queued (0) == 0)
+ return (_rl_dispatch (ANYOTHERKEY, FUNCTION_TO_KEYMAP (map, key)));
+#endif
rl_key_sequence_length++;
+
+ if (key == ESC)
+ RL_SETSTATE(RL_STATE_METANEXT);
+ RL_SETSTATE(RL_STATE_MOREINPUT);
newkey = rl_read_key ();
- rl_dispatch (newkey, (Keymap)map[key].function);
+ RL_UNSETSTATE(RL_STATE_MOREINPUT);
+ if (key == ESC)
+ RL_UNSETSTATE(RL_STATE_METANEXT);
+
+ if (newkey < 0)
+ {
+ _rl_abort_internal ();
+ return -1;
+ }
+
+ r = _rl_dispatch_subseq (newkey, FUNCTION_TO_KEYMAP (map, key), got_subseq || map[ANYOTHERKEY].function);
+
+ if (r == -2)
+ /* We didn't match anything, and the keymap we're indexed into
+ shadowed a function previously bound to that prefix. Call
+ the function. The recursive call to _rl_dispatch_subseq has
+ already taken care of pushing any necessary input back onto
+ the input queue with _rl_unget_char. */
+ r = _rl_dispatch (ANYOTHERKEY, FUNCTION_TO_KEYMAP (map, key));
+ else if (r && map[ANYOTHERKEY].function)
+ {
+ /* We didn't match (r is probably -1), so return something to
+ tell the caller that it should try ANYOTHERKEY for an
+ overridden function. */
+ _rl_unget_char (key);
+ return -2;
+ }
+ else if (r && got_subseq)
+ {
+ /* OK, back up the chain. */
+ _rl_unget_char (key);
+ return -1;
+ }
}
else
{
- rl_abort ();
- return;
+ _rl_abort_internal ();
+ return -1;
}
break;
case ISMACR:
- if (map[key].function != (Function *)NULL)
+ if (map[key].function != 0)
{
- char *macro;
-
macro = savestring ((char *)map[key].function);
- with_macro_input (macro);
- return;
+ _rl_with_macro_input (macro);
+ return 0;
}
break;
}
#if defined (VI_MODE)
if (rl_editing_mode == vi_mode && _rl_keymap == vi_movement_keymap &&
- rl_vi_textmod_command (key))
- {
- _rl_vi_last_command = key;
- _rl_vi_last_repeat = rl_numeric_arg;
- _rl_vi_last_arg_sign = rl_arg_sign;
- }
+ _rl_vi_textmod_command (key))
+ _rl_vi_set_last (key, rl_numeric_arg, rl_arg_sign);
#endif
+ return (r);
}
-\f
/* **************************************************************** */
/* */
-/* Hacking Keyboard Macros */
+/* Initializations */
/* */
/* **************************************************************** */
-/* The currently executing macro string. If this is non-zero,
- then it is a malloc ()'ed string where input is coming from. */
-static char *executing_macro = (char *)NULL;
+/* Initialize readline (and terminal if not already). */
+int
+rl_initialize ()
+{
+ /* If we have never been called before, initialize the
+ terminal and data structures. */
+ if (!rl_initialized)
+ {
+ RL_SETSTATE(RL_STATE_INITIALIZING);
+ readline_initialize_everything ();
+ RL_UNSETSTATE(RL_STATE_INITIALIZING);
+ rl_initialized++;
+ RL_SETSTATE(RL_STATE_INITIALIZED);
+ }
-/* The offset in the above string to the next character to be read. */
-static int executing_macro_index = 0;
+ /* Initalize the current line information. */
+ _rl_init_line_state ();
-/* The current macro string being built. Characters get stuffed
- in here by add_macro_char (). */
-static char *current_macro = (char *)NULL;
+ /* We aren't done yet. We haven't even gotten started yet! */
+ rl_done = 0;
+ RL_UNSETSTATE(RL_STATE_DONE);
-/* The size of the buffer allocated to current_macro. */
-static int current_macro_size = 0;
+ /* Tell the history routines what is going on. */
+ _rl_start_using_history ();
-/* The index at which characters are being added to current_macro. */
-static int current_macro_index = 0;
+ /* Make the display buffer match the state of the line. */
+ rl_reset_line_state ();
-/* A structure used to save nested macro strings.
- It is a linked list of string/index for each saved macro. */
-struct saved_macro {
- struct saved_macro *next;
- char *string;
- int index;
-};
+ /* No such function typed yet. */
+ rl_last_func = (rl_command_func_t *)NULL;
-/* The list of saved macros. */
-struct saved_macro *macro_list = (struct saved_macro *)NULL;
+ /* Parsing of key-bindings begins in an enabled state. */
+ _rl_parsing_conditionalized_out = 0;
-/* Forward declarations of static functions. Thank you C. */
-static void push_executing_macro (), pop_executing_macro ();
+#if defined (VI_MODE)
+ if (rl_editing_mode == vi_mode)
+ _rl_vi_initialize_line ();
+#endif
-/* This one has to be declared earlier in the file. */
-/* static void add_macro_char (); */
+ /* Each line starts in insert mode (the default). */
+ _rl_set_insert_mode (RL_IM_DEFAULT, 1);
-/* Set up to read subsequent input from STRING.
- STRING is free ()'ed when we are done with it. */
-static void
-with_macro_input (string)
- char *string;
-{
- push_executing_macro ();
- executing_macro = string;
- executing_macro_index = 0;
+ return 0;
}
-/* Return the next character available from a macro, or 0 if
- there are no macro characters. */
-static int
-next_macro_key ()
+#if 0
+#if defined (__EMX__)
+static void
+_emx_build_environ ()
{
- if (!executing_macro)
- return (0);
+ TIB *tibp;
+ PIB *pibp;
+ char *t, **tp;
+ int c;
- if (!executing_macro[executing_macro_index])
+ DosGetInfoBlocks (&tibp, &pibp);
+ t = pibp->pib_pchenv;
+ for (c = 1; *t; c++)
+ t += strlen (t) + 1;
+ tp = environ = (char **)xmalloc ((c + 1) * sizeof (char *));
+ t = pibp->pib_pchenv;
+ while (*t)
{
- pop_executing_macro ();
- return (next_macro_key ());
+ *tp++ = t;
+ t += strlen (t) + 1;
}
-
- return (executing_macro[executing_macro_index++]);
+ *tp = 0;
}
+#endif /* __EMX__ */
+#endif
-/* Save the currently executing macro on a stack of saved macros. */
+/* Initialize the entire state of the world. */
static void
-push_executing_macro ()
+readline_initialize_everything ()
{
- struct saved_macro *saver;
+#if 0
+#if defined (__EMX__)
+ if (environ == 0)
+ _emx_build_environ ();
+#endif
+#endif
- saver = (struct saved_macro *)xmalloc (sizeof (struct saved_macro));
- saver->next = macro_list;
- saver->index = executing_macro_index;
- saver->string = executing_macro;
+#if 0
+ /* Find out if we are running in Emacs -- UNUSED. */
+ running_in_emacs = sh_get_env_value ("EMACS") != (char *)0;
+#endif
- macro_list = saver;
-}
+ /* Set up input and output if they are not already set up. */
+ if (!rl_instream)
+ rl_instream = stdin;
-/* Discard the current macro, replacing it with the one
- on the top of the stack of saved macros. */
-static void
-pop_executing_macro ()
-{
- if (executing_macro)
- free (executing_macro);
+ if (!rl_outstream)
+ rl_outstream = stdout;
- executing_macro = (char *)NULL;
- executing_macro_index = 0;
+ /* Bind _rl_in_stream and _rl_out_stream immediately. These values
+ may change, but they may also be used before readline_internal ()
+ is called. */
+ _rl_in_stream = rl_instream;
+ _rl_out_stream = rl_outstream;
- if (macro_list)
- {
- struct saved_macro *disposer = macro_list;
- executing_macro = macro_list->string;
- executing_macro_index = macro_list->index;
- macro_list = macro_list->next;
- free (disposer);
- }
-}
-
-/* Add a character to the macro being built. */
-static void
-add_macro_char (c)
- int c;
-{
- if (current_macro_index + 1 >= current_macro_size)
- {
- if (!current_macro)
- current_macro = (char *)xmalloc (current_macro_size = 25);
- else
- current_macro =
- (char *)xrealloc (current_macro, current_macro_size += 25);
- }
-
- current_macro[current_macro_index++] = c;
- current_macro[current_macro_index] = '\0';
-}
-
-/* Begin defining a keyboard macro.
- Keystrokes are recorded as they are executed.
- End the definition with rl_end_kbd_macro ().
- If a numeric argument was explicitly typed, then append this
- definition to the end of the existing macro, and start by
- re-executing the existing macro. */
-rl_start_kbd_macro (ignore1, ignore2)
- int ignore1, ignore2;
-{
- if (defining_kbd_macro)
- rl_abort ();
-
- if (rl_explicit_arg)
- {
- if (current_macro)
- with_macro_input (savestring (current_macro));
- }
- else
- current_macro_index = 0;
-
- defining_kbd_macro = 1;
-}
-
-/* Stop defining a keyboard macro.
- A numeric argument says to execute the macro right now,
- that many times, counting the definition as the first time. */
-rl_end_kbd_macro (count, ignore)
- int count, ignore;
-{
- if (!defining_kbd_macro)
- rl_abort ();
-
- current_macro_index -= (rl_key_sequence_length - 1);
- current_macro[current_macro_index] = '\0';
-
- defining_kbd_macro = 0;
-
- rl_call_last_kbd_macro (--count, 0);
-}
-
-/* Execute the most recently defined keyboard macro.
- COUNT says how many times to execute it. */
-rl_call_last_kbd_macro (count, ignore)
- int count, ignore;
-{
- if (!current_macro)
- rl_abort ();
-
- while (count--)
- with_macro_input (savestring (current_macro));
-}
-
-\f
-/* **************************************************************** */
-/* */
-/* Initializations */
-/* */
-/* **************************************************************** */
-
-/* Initliaze readline (and terminal if not already). */
-rl_initialize ()
-{
- /* If we have never been called before, initialize the
- terminal and data structures. */
- if (!rl_initialized)
- {
- readline_initialize_everything ();
- rl_initialized++;
- }
-
- /* Initalize the current line information. */
- rl_point = rl_end = 0;
- the_line = rl_line_buffer;
- the_line[0] = 0;
-
- /* We aren't done yet. We haven't even gotten started yet! */
- rl_done = 0;
-
- /* Tell the history routines what is going on. */
- start_using_history ();
-
- /* Make the display buffer match the state of the line. */
- rl_reset_line_state ();
-
- /* No such function typed yet. */
- rl_last_func = (Function *)NULL;
-
- /* Parsing of key-bindings begins in an enabled state. */
- _rl_parsing_conditionalized_out = 0;
-}
-
-/* Initialize the entire state of the world. */
-readline_initialize_everything ()
-{
- /* Find out if we are running in Emacs. */
- running_in_emacs = getenv ("EMACS");
-
- /* Set up input and output if they are not already set up. */
- if (!rl_instream)
- rl_instream = stdin;
-
- if (!rl_outstream)
- rl_outstream = stdout;
-
- /* Bind in_stream and out_stream immediately. These values may change,
- but they may also be used before readline_internal () is called. */
- in_stream = rl_instream;
- out_stream = rl_outstream;
-
- /* Allocate data structures. */
- if (!rl_line_buffer)
- rl_line_buffer =
- (char *)xmalloc (rl_line_buffer_len = DEFAULT_BUFFER_SIZE);
+ /* Allocate data structures. */
+ if (rl_line_buffer == 0)
+ rl_line_buffer = (char *)xmalloc (rl_line_buffer_len = DEFAULT_BUFFER_SIZE);
/* Initialize the terminal interface. */
- init_terminal_io ((char *)NULL);
+ if (rl_terminal_name == 0)
+ rl_terminal_name = sh_get_env_value ("TERM");
+ _rl_init_terminal_io (rl_terminal_name);
/* Bind tty characters to readline functions. */
readline_default_bindings ();
/* Initialize the function names. */
rl_initialize_funmap ();
+ /* Decide whether we should automatically go into eight-bit mode. */
+ _rl_init_eightbit ();
+
/* Read in the init file. */
rl_read_init_file ((char *)NULL);
+ /* XXX */
+ if (_rl_horizontal_scroll_mode && _rl_term_autowrap)
+ {
+ _rl_screenwidth--;
+ _rl_screenchars -= _rl_screenheight;
+ }
+
+ /* Override the effect of any `set keymap' assignments in the
+ inputrc file. */
+ rl_set_keymap_from_edit_mode ();
+
+ /* Try to bind a common arrow key prefix, if not already bound. */
+ bind_arrow_keys ();
+
+ /* Enable the meta key, if this terminal has one. */
+ if (_rl_enable_meta)
+ _rl_enable_meta_key ();
+
/* If the completion parser's default word break characters haven't
been set yet, then do so now. */
- {
- if (rl_completer_word_break_characters == (char *)NULL)
- rl_completer_word_break_characters = rl_basic_word_break_characters;
- }
+ if (rl_completer_word_break_characters == (char *)NULL)
+ rl_completer_word_break_characters = rl_basic_word_break_characters;
}
/* If this system allows us to look at the values of the regular
static void
readline_default_bindings ()
{
- rltty_set_default_bindings (_rl_keymap);
-}
-
-\f
-/* **************************************************************** */
-/* */
-/* Numeric Arguments */
-/* */
-/* **************************************************************** */
-
-/* Handle C-u style numeric args, as well as M--, and M-digits. */
-
-/* Add the current digit to the argument in progress. */
-rl_digit_argument (ignore, key)
- int ignore, key;
-{
- rl_pending_input = key;
- rl_digit_loop ();
-}
-
-/* What to do when you abort reading an argument. */
-rl_discard_argument ()
-{
- ding ();
- rl_clear_message ();
- rl_init_argument ();
-}
-
-/* Create a default argument. */
-rl_init_argument ()
-{
- rl_numeric_arg = rl_arg_sign = 1;
- rl_explicit_arg = 0;
-}
-
-/* C-u, universal argument. Multiply the current argument by 4.
- Read a key. If the key has nothing to do with arguments, then
- dispatch on it. If the key is the abort character then abort. */
-rl_universal_argument ()
-{
- rl_numeric_arg *= 4;
- rl_digit_loop ();
-}
-
-rl_digit_loop ()
-{
- int key, c;
- while (1)
- {
- rl_message ("(arg: %d) ", rl_arg_sign * rl_numeric_arg);
- key = c = rl_read_key ();
-
- if (_rl_keymap[c].type == ISFUNC &&
- _rl_keymap[c].function == rl_universal_argument)
- {
- rl_numeric_arg *= 4;
- continue;
- }
- c = UNMETA (c);
- if (numeric (c))
- {
- if (rl_explicit_arg)
- rl_numeric_arg = (rl_numeric_arg * 10) + (c - '0');
- else
- rl_numeric_arg = (c - '0');
- rl_explicit_arg = 1;
- }
- else
- {
- if (c == '-' && !rl_explicit_arg)
- {
- rl_numeric_arg = 1;
- rl_arg_sign = -1;
- }
- else
- {
- rl_clear_message ();
- rl_dispatch (key, _rl_keymap);
- return;
- }
- }
- }
-}
-\f
-/* **************************************************************** */
-/* */
-/* Terminal and Termcap */
-/* */
-/* **************************************************************** */
-
-static char *term_buffer = (char *)NULL;
-static char *term_string_buffer = (char *)NULL;
-
-/* Non-zero means this terminal can't really do anything. */
-int dumb_term = 0;
-/* On Solaris2, sys/types.h #includes sys/reg.h, which #defines PC.
- Unfortunately, PC is a global variable used by the termcap library. */
-#undef PC
-
-#if !defined (__linux__)
-char PC;
-char *BC, *UP;
-#endif /* __linux__ */
-
-/* Some strings to control terminal actions. These are output by tputs (). */
-char *term_goto, *term_clreol, *term_cr, *term_clrpag, *term_backspace;
-
-int screenwidth, screenheight;
-
-/* Non-zero if we determine that the terminal can do character insertion. */
-int terminal_can_insert = 0;
-
-/* How to insert characters. */
-char *term_im, *term_ei, *term_ic, *term_ip, *term_IC;
-
-/* How to delete characters. */
-char *term_dc, *term_DC;
-
-#if defined (HACK_TERMCAP_MOTION)
-char *term_forward_char;
-#endif /* HACK_TERMCAP_MOTION */
-
-/* How to go up a line. */
-char *term_up;
-
-/* A visible bell, if the terminal can be made to flash the screen. */
-char *visible_bell;
-
-/* Non-zero means that this terminal has a meta key. */
-int term_has_meta;
-
-/* The string to write to turn on the meta key, if this term has one. */
-char *term_mm;
-
-/* The string to write to turn off the meta key, if this term has one. */
-char *term_mo;
-
-/* The key sequences output by the arrow keys, if this terminal has any. */
-char *term_ku, *term_kd, *term_kr, *term_kl;
-
-/* Re-initialize the terminal considering that the TERM/TERMCAP variable
- has changed. */
-rl_reset_terminal (terminal_name)
- char *terminal_name;
-{
- init_terminal_io (terminal_name);
-}
-
-/* Set readline's idea of the screen size. TTY is a file descriptor open
- to the terminal. If IGNORE_ENV is true, we do not pay attention to the
- values of $LINES and $COLUMNS. The tests for TERM_STRING_BUFFER being
- non-null serve to check whether or not we have initialized termcap. */
-void
-_rl_set_screen_size (tty, ignore_env)
- int tty, ignore_env;
-{
-#if defined (TIOCGWINSZ)
- struct winsize window_size;
-#endif /* TIOCGWINSZ */
-
-#if defined (TIOCGWINSZ)
- if (ioctl (tty, TIOCGWINSZ, &window_size) == 0)
- {
- screenwidth = (int) window_size.ws_col;
- screenheight = (int) window_size.ws_row;
- }
-#endif /* TIOCGWINSZ */
-
- /* Environment variable COLUMNS overrides setting of "co" if IGNORE_ENV
- is unset. */
- if (screenwidth <= 0)
- {
- char *sw;
-
- if (!ignore_env && (sw = getenv ("COLUMNS")))
- screenwidth = atoi (sw);
-
- if (screenwidth <= 0 && term_string_buffer)
- screenwidth = tgetnum ("co");
- }
-
- /* Environment variable LINES overrides setting of "li" if IGNORE_ENV
- is unset. */
- if (screenheight <= 0)
- {
- char *sh;
-
- if (!ignore_env && (sh = getenv ("LINES")))
- screenheight = atoi (sh);
-
- if (screenheight <= 0 && term_string_buffer)
- screenheight = tgetnum ("li");
- }
-
- /* If all else fails, default to 80x24 terminal. */
- if (screenwidth <= 0)
- screenwidth = 80;
-
- if (screenheight <= 0)
- screenheight = 24;
-
-#if defined (SHELL)
- /* If we're being compiled as part of bash, set the environment
- variables $LINES and $COLUMNS to new values. */
- set_lines_and_columns (screenheight, screenwidth);
-#endif
-
- screenwidth--;
+ rl_tty_set_default_bindings (_rl_keymap);
}
-init_terminal_io (terminal_name)
- char *terminal_name;
+/* Bind some common arrow key sequences in MAP. */
+static void
+bind_arrow_keys_internal (map)
+ Keymap map;
{
-#ifdef __GO32__
- screenwidth = ScreenCols ();
- screenheight = ScreenRows ();
- term_cr = "\r";
- term_im = term_ei = term_ic = term_IC = (char *)NULL;
- term_up = term_dc = term_DC = visible_bell = (char *)NULL;
-
- /* Does the _GO32_ have a meta key? I don't know. */
- term_has_meta = 0;
- term_mm = term_mo = (char *)NULL;
-
- /* It probably has arrow keys, but I don't know what they are. */
- term_ku = term_kd = term_kr = term_kl = (char *)NULL;
-
-#if defined (HACK_TERMCAP_MOTION)
- term_forward_char = (char *)NULL;
-#endif
- terminal_can_insert = 0;
- return;
-#else /* !__GO32__ */
- char *term, *buffer;
- int tty;
-
- term = terminal_name ? terminal_name : getenv ("TERM");
-
- if (!term_string_buffer)
- term_string_buffer = (char *)xmalloc (2048);
-
- if (!term_buffer)
- term_buffer = (char *)xmalloc (2048);
+ Keymap xkeymap;
- buffer = term_string_buffer;
+ xkeymap = _rl_keymap;
+ _rl_keymap = map;
- term_clrpag = term_cr = term_clreol = (char *)NULL;
-
- if (!term)
- term = "dumb";
-
- if (tgetent (term_buffer, term) <= 0)
- {
- dumb_term = 1;
- screenwidth = 79;
- screenheight = 24;
- term_cr = "\r";
- term_im = term_ei = term_ic = term_IC = (char *)NULL;
- term_up = term_dc = term_DC = visible_bell = (char *)NULL;
- term_ku = term_kd = term_kl = term_kr = (char *)NULL;
-#if defined (HACK_TERMCAP_MOTION)
- term_forward_char = (char *)NULL;
+#if defined (__MSDOS__)
+ _rl_bind_if_unbound ("\033[0A", rl_get_previous_history);
+ _rl_bind_if_unbound ("\033[0B", rl_backward_char);
+ _rl_bind_if_unbound ("\033[0C", rl_forward_char);
+ _rl_bind_if_unbound ("\033[0D", rl_get_next_history);
#endif
- terminal_can_insert = 0;
- return;
- }
-
- BC = tgetstr ("pc", &buffer);
- PC = buffer ? *buffer : 0;
-
- term_backspace = tgetstr ("le", &buffer);
-
- term_cr = tgetstr ("cr", &buffer);
- term_clreol = tgetstr ("ce", &buffer);
- term_clrpag = tgetstr ("cl", &buffer);
-
- if (!term_cr)
- term_cr = "\r";
-
-#if defined (HACK_TERMCAP_MOTION)
- term_forward_char = tgetstr ("nd", &buffer);
-#endif /* HACK_TERMCAP_MOTION */
-
- if (rl_instream)
- tty = fileno (rl_instream);
- else
- tty = 0;
-
- screenwidth = screenheight = 0;
-
- _rl_set_screen_size (tty, 0);
-
- term_im = tgetstr ("im", &buffer);
- term_ei = tgetstr ("ei", &buffer);
- term_IC = tgetstr ("IC", &buffer);
- term_ic = tgetstr ("ic", &buffer);
-
- /* "An application program can assume that the terminal can do
- character insertion if *any one of* the capabilities `IC',
- `im', `ic' or `ip' is provided." But we can't do anything if
- only `ip' is provided, so... */
- terminal_can_insert = (term_IC || term_im || term_ic);
-
- term_up = tgetstr ("up", &buffer);
- term_dc = tgetstr ("dc", &buffer);
- term_DC = tgetstr ("DC", &buffer);
-
- visible_bell = tgetstr ("vb", &buffer);
-
- /* Check to see if this terminal has a meta key. */
- term_has_meta = (tgetflag ("km") || tgetflag ("MT"));
- if (term_has_meta)
- {
- term_mm = tgetstr ("mm", &buffer);
- term_mo = tgetstr ("mo", &buffer);
- }
- else
- {
- term_mm = (char *)NULL;
- term_mo = (char *)NULL;
- }
-
- /* Attempt to find and bind the arrow keys. Do not override already
- bound keys in an overzealous attempt, however. */
- term_ku = tgetstr ("ku", &buffer);
- term_kd = tgetstr ("kd", &buffer);
- term_kr = tgetstr ("kr", &buffer);
- term_kl = tgetstr ("kl", &buffer);
-
- if (term_ku)
- {
- Function *func;
-
- func = rl_function_of_keyseq (term_ku, _rl_keymap, (int *)NULL);
-
- if (!func || func == rl_do_lowercase_version)
- rl_set_key (term_ku, rl_get_previous_history, _rl_keymap);
- }
-
- if (term_kd)
- {
- Function *func;
-
- func = rl_function_of_keyseq (term_kd, _rl_keymap, (int *)NULL);
-
- if (!func || func == rl_do_lowercase_version)
- rl_set_key (term_kd, rl_get_next_history, _rl_keymap);
- }
-
- if (term_kr)
- {
- Function *func;
- func = rl_function_of_keyseq (term_kr, _rl_keymap, (int *)NULL);
-
- if (!func || func == rl_do_lowercase_version)
- rl_set_key (term_kr, rl_forward, _rl_keymap);
- }
-
- if (term_kl)
- {
- Function *func;
-
- func = rl_function_of_keyseq (term_kl, _rl_keymap, (int *)NULL);
-
- if (!func || func == rl_do_lowercase_version)
- rl_set_key (term_kl, rl_backward, _rl_keymap);
- }
-#endif /* !__GO32__ */
-}
+ _rl_bind_if_unbound ("\033[A", rl_get_previous_history);
+ _rl_bind_if_unbound ("\033[B", rl_get_next_history);
+ _rl_bind_if_unbound ("\033[C", rl_forward_char);
+ _rl_bind_if_unbound ("\033[D", rl_backward_char);
+ _rl_bind_if_unbound ("\033[H", rl_beg_of_line);
+ _rl_bind_if_unbound ("\033[F", rl_end_of_line);
-/* A function for the use of tputs () */
-void
-_rl_output_character_function (c)
- int c;
-{
- putc (c, out_stream);
-}
+ _rl_bind_if_unbound ("\033OA", rl_get_previous_history);
+ _rl_bind_if_unbound ("\033OB", rl_get_next_history);
+ _rl_bind_if_unbound ("\033OC", rl_forward_char);
+ _rl_bind_if_unbound ("\033OD", rl_backward_char);
+ _rl_bind_if_unbound ("\033OH", rl_beg_of_line);
+ _rl_bind_if_unbound ("\033OF", rl_end_of_line);
-/* Write COUNT characters from STRING to the output stream. */
-void
-_rl_output_some_chars (string, count)
- char *string;
- int count;
-{
- fwrite (string, 1, count, out_stream);
+ _rl_keymap = xkeymap;
}
-
-
-/* Move the cursor back. */
-backspace (count)
- int count;
+/* Try and bind the common arrow key prefixes after giving termcap and
+ the inputrc file a chance to bind them and create `real' keymaps
+ for the arrow key prefix. */
+static void
+bind_arrow_keys ()
{
- register int i;
+ bind_arrow_keys_internal (emacs_standard_keymap);
-#ifndef __GO32__
- if (term_backspace)
- for (i = 0; i < count; i++)
- tputs (term_backspace, 1, _rl_output_character_function);
- else
-#endif /* !__GO32__ */
- for (i = 0; i < count; i++)
- putc ('\b', out_stream);
-}
-
-/* Move to the start of the next line. */
-crlf ()
-{
-#if defined (NEW_TTY_DRIVER)
- tputs (term_cr, 1, _rl_output_character_function);
-#endif /* NEW_TTY_DRIVER */
- putc ('\n', out_stream);
+#if defined (VI_MODE)
+ bind_arrow_keys_internal (vi_movement_keymap);
+ bind_arrow_keys_internal (vi_insertion_keymap);
+#endif
}
-\f
/* **************************************************************** */
/* */
-/* Utility Functions */
+/* Saving and Restoring Readline's state */
/* */
/* **************************************************************** */
-/* Return 0 if C is not a member of the class of characters that belong
- in words, or 1 if it is. */
-
-int allow_pathname_alphabetic_chars = 0;
-char *pathname_alphabetic_chars = "/-_=~.#$";
-
int
-alphabetic (c)
- int c;
-{
- if (pure_alphabetic (c) || (numeric (c)))
- return (1);
-
- if (allow_pathname_alphabetic_chars)
- return ((int) strchr (pathname_alphabetic_chars, c));
- else
- return (0);
-}
+rl_save_state (sp)
+ struct readline_state *sp;
+{
+ if (sp == 0)
+ return -1;
+
+ sp->point = rl_point;
+ sp->end = rl_end;
+ sp->mark = rl_mark;
+ sp->buffer = rl_line_buffer;
+ sp->buflen = rl_line_buffer_len;
+ sp->ul = rl_undo_list;
+ sp->prompt = rl_prompt;
+
+ sp->rlstate = rl_readline_state;
+ sp->done = rl_done;
+ sp->kmap = _rl_keymap;
+
+ sp->lastfunc = rl_last_func;
+ sp->insmode = rl_insert_mode;
+ sp->edmode = rl_editing_mode;
+ sp->kseqlen = rl_key_sequence_length;
+ sp->inf = rl_instream;
+ sp->outf = rl_outstream;
+ sp->pendingin = rl_pending_input;
+ sp->macro = rl_executing_macro;
+
+ sp->catchsigs = rl_catch_signals;
+ sp->catchsigwinch = rl_catch_sigwinch;
-/* Return non-zero if C is a numeric character. */
-int
-numeric (c)
- int c;
-{
- return (c >= '0' && c <= '9');
+ return (0);
}
-/* Ring the terminal bell. */
int
-ding ()
-{
- if (readline_echoing_p)
- {
-#ifndef __GO32__
- if (_rl_prefer_visible_bell && visible_bell)
- tputs (visible_bell, 1, _rl_output_character_function);
- else
-#endif /* !__GO32__ */
- {
- fprintf (stderr, "\007");
- fflush (stderr);
- }
- }
- return (-1);
-}
-
-/* How to abort things. */
-rl_abort ()
-{
- ding ();
- rl_clear_message ();
- rl_init_argument ();
- rl_pending_input = 0;
+rl_restore_state (sp)
+ struct readline_state *sp;
+{
+ if (sp == 0)
+ return -1;
+
+ rl_point = sp->point;
+ rl_end = sp->end;
+ rl_mark = sp->mark;
+ the_line = rl_line_buffer = sp->buffer;
+ rl_line_buffer_len = sp->buflen;
+ rl_undo_list = sp->ul;
+ rl_prompt = sp->prompt;
+
+ rl_readline_state = sp->rlstate;
+ rl_done = sp->done;
+ _rl_keymap = sp->kmap;
+
+ rl_last_func = sp->lastfunc;
+ rl_insert_mode = sp->insmode;
+ rl_editing_mode = sp->edmode;
+ rl_key_sequence_length = sp->kseqlen;
+ rl_instream = sp->inf;
+ rl_outstream = sp->outf;
+ rl_pending_input = sp->pendingin;
+ rl_executing_macro = sp->macro;
+
+ rl_catch_signals = sp->catchsigs;
+ rl_catch_sigwinch = sp->catchsigwinch;
- defining_kbd_macro = 0;
- while (executing_macro)
- pop_executing_macro ();
-
- rl_last_func = (Function *)NULL;
- longjmp (readline_top_level, 1);
-}
-
-/* Return a copy of the string between FROM and TO.
- FROM is inclusive, TO is not. */
-char *
-rl_copy_text (from, to)
- int from, to;
-{
- register int length;
- char *copy;
-
- /* Fix it if the caller is confused. */
- if (from > to)
- {
- int t = from;
- from = to;
- to = t;
- }
-
- length = to - from;
- copy = (char *)xmalloc (1 + length);
- strncpy (copy, the_line + from, length);
- copy[length] = '\0';
- return (copy);
-}
-
-/* Increase the size of RL_LINE_BUFFER until it has enough space to hold
- LEN characters. */
-void
-rl_extend_line_buffer (len)
- int len;
-{
- while (len >= rl_line_buffer_len)
- rl_line_buffer =
- (char *)xrealloc
- (rl_line_buffer, rl_line_buffer_len += DEFAULT_BUFFER_SIZE);
-
- the_line = rl_line_buffer;
+ return (0);
}
-
-\f
-/* **************************************************************** */
-/* */
-/* Insert and Delete */
-/* */
-/* **************************************************************** */
-
-/* Insert a string of text into the line at point. This is the only
- way that you should do insertion. rl_insert () calls this
- function. */
-rl_insert_text (string)
- char *string;
-{
- register int i, l = strlen (string);
-
- if (rl_end + l >= rl_line_buffer_len)
- rl_extend_line_buffer (rl_end + l);
-
- for (i = rl_end; i >= rl_point; i--)
- the_line[i + l] = the_line[i];
- strncpy (the_line + rl_point, string, l);
-
- /* Remember how to undo this if we aren't undoing something. */
- if (!doing_an_undo)
- {
- /* If possible and desirable, concatenate the undos. */
- if ((strlen (string) == 1) &&
- rl_undo_list &&
- (rl_undo_list->what == UNDO_INSERT) &&
- (rl_undo_list->end == rl_point) &&
- (rl_undo_list->end - rl_undo_list->start < 20))
- rl_undo_list->end++;
- else
- rl_add_undo (UNDO_INSERT, rl_point, rl_point + l, (char *)NULL);
- }
- rl_point += l;
- rl_end += l;
- the_line[rl_end] = '\0';
-}
-
-/* Delete the string between FROM and TO. FROM is
- inclusive, TO is not. */
-rl_delete_text (from, to)
- int from, to;
-{
- register char *text;
-
- /* Fix it if the caller is confused. */
- if (from > to)
- {
- int t = from;
- from = to;
- to = t;
- }
- text = rl_copy_text (from, to);
- strncpy (the_line + from, the_line + to, rl_end - to);
-
- /* Remember how to undo this delete. */
- if (!doing_an_undo)
- rl_add_undo (UNDO_DELETE, from, to, text);
- else
- free (text);
-
- rl_end -= (to - from);
- the_line[rl_end] = '\0';
-}
-
-\f
-/* **************************************************************** */
-/* */
-/* Readline character functions */
-/* */
-/* **************************************************************** */
-
-/* This is not a gap editor, just a stupid line input routine. No hair
- is involved in writing any of the functions, and none should be. */
-
-/* Note that:
-
- rl_end is the place in the string that we would place '\0';
- i.e., it is always safe to place '\0' there.
-
- rl_point is the place in the string where the cursor is. Sometimes
- this is the same as rl_end.
-
- Any command that is called interactively receives two arguments.
- The first is a count: the numeric arg pased to this command.
- The second is the key which invoked this command.
-*/
-
-\f
-/* **************************************************************** */
-/* */
-/* Movement Commands */
-/* */
-/* **************************************************************** */
-
-/* Note that if you `optimize' the display for these functions, you cannot
- use said functions in other functions which do not do optimizing display.
- I.e., you will have to update the data base for rl_redisplay, and you
- might as well let rl_redisplay do that job. */
-
-/* Move forward COUNT characters. */
-rl_forward (count)
- int count;
-{
- if (count < 0)
- rl_backward (-count);
- else
- while (count)
- {
-#if defined (VI_MODE)
- if (rl_point >= (rl_end - (rl_editing_mode == vi_mode)))
-#else
- if (rl_point == rl_end)
-#endif /* VI_MODE */
- {
- ding ();
- return;
- }
- else
- rl_point++;
- --count;
- }
-}
-
-/* Move backward COUNT characters. */
-rl_backward (count)
- int count;
-{
- if (count < 0)
- rl_forward (-count);
- else
- while (count)
- {
- if (!rl_point)
- {
- ding ();
- return;
- }
- else
- --rl_point;
- --count;
- }
-}
-
-/* Move to the beginning of the line. */
-rl_beg_of_line ()
-{
- rl_point = 0;
-}
-
-/* Move to the end of the line. */
-rl_end_of_line ()
-{
- rl_point = rl_end;
-}
-
-/* Move forward a word. We do what Emacs does. */
-rl_forward_word (count)
- int count;
-{
- int c;
-
- if (count < 0)
- {
- rl_backward_word (-count);
- return;
- }
-
- while (count)
- {
- if (rl_point == rl_end)
- return;
-
- /* If we are not in a word, move forward until we are in one.
- Then, move forward until we hit a non-alphabetic character. */
- c = the_line[rl_point];
- if (!alphabetic (c))
- {
- while (++rl_point < rl_end)
- {
- c = the_line[rl_point];
- if (alphabetic (c)) break;
- }
- }
- if (rl_point == rl_end) return;
- while (++rl_point < rl_end)
- {
- c = the_line[rl_point];
- if (!alphabetic (c)) break;
- }
- --count;
- }
-}
-
-/* Move backward a word. We do what Emacs does. */
-rl_backward_word (count)
- int count;
-{
- int c;
-
- if (count < 0)
- {
- rl_forward_word (-count);
- return;
- }
-
- while (count)
- {
- if (!rl_point)
- return;
-
- /* Like rl_forward_word (), except that we look at the characters
- just before point. */
-
- c = the_line[rl_point - 1];
- if (!alphabetic (c))
- {
- while (--rl_point)
- {
- c = the_line[rl_point - 1];
- if (alphabetic (c)) break;
- }
- }
-
- while (rl_point)
- {
- c = the_line[rl_point - 1];
- if (!alphabetic (c))
- break;
- else --rl_point;
- }
- --count;
- }
-}
-
-/* Clear the current line. Numeric argument to C-l does this. */
-rl_refresh_line ()
-{
- int curr_line = _rl_last_c_pos / screenwidth;
-
- _rl_move_vert (curr_line);
- _rl_move_cursor_relative (0, the_line); /* XXX is this right */
-
-#ifdef __GO32__
- {
- int row, col, width, row_start;
-
- ScreenGetCursor (&row, &col);
- width = ScreenCols ();
- row_start = ScreenPrimary + (row * width);
- memset (row_start + col, 0, (width - col) * 2);
- }
-#else /* __GO32__ */
- if (term_clreol)
- tputs (term_clreol, 1, _rl_output_character_function);
-#endif /* __GO32__/else */
-
- rl_forced_update_display ();
- rl_display_fixed = 1;
-}
-
-/* C-l typed to a line without quoting clears the screen, and then reprints
- the prompt and the current input line. Given a numeric arg, redraw only
- the current line. */
-rl_clear_screen ()
-{
- if (rl_explicit_arg)
- {
- rl_refresh_line ();
- return;
- }
-
-#ifndef __GO32__
- if (term_clrpag)
- tputs (term_clrpag, 1, _rl_output_character_function);
- else
-#endif /* !__GO32__ */
- crlf ();
-
- rl_forced_update_display ();
- rl_display_fixed = 1;
-}
-
-rl_arrow_keys (count, c)
- int count, c;
-{
- int ch;
-
- ch = rl_read_key ();
-
- switch (to_upper (ch))
- {
- case 'A':
- rl_get_previous_history (count);
- break;
-
- case 'B':
- rl_get_next_history (count);
- break;
-
- case 'C':
- rl_forward (count);
- break;
-
- case 'D':
- rl_backward (count);
- break;
-
- default:
- ding ();
- }
-}
-
-\f
-/* **************************************************************** */
-/* */
-/* Text commands */
-/* */
-/* **************************************************************** */
-
-/* Insert the character C at the current location, moving point forward. */
-rl_insert (count, c)
- int count, c;
-{
- register int i;
- char *string;
-
- if (count <= 0)
- return;
-
- /* If we can optimize, then do it. But don't let people crash
- readline because of extra large arguments. */
- if (count > 1 && count < 1024)
- {
- string = (char *)alloca (1 + count);
-
- for (i = 0; i < count; i++)
- string[i] = c;
-
- string[i] = '\0';
- rl_insert_text (string);
- return;
- }
-
- if (count > 1024)
- {
- int decreaser;
-
- string = (char *)alloca (1024 + 1);
-
- for (i = 0; i < 1024; i++)
- string[i] = c;
-
- while (count)
- {
- decreaser = (count > 1024 ? 1024 : count);
- string[decreaser] = '\0';
- rl_insert_text (string);
- count -= decreaser;
- }
- return;
- }
-
- /* We are inserting a single character.
- If there is pending input, then make a string of all of the
- pending characters that are bound to rl_insert, and insert
- them all. */
- if (any_typein)
- {
- int key = 0, t;
-
- i = 0;
- string = (char *)alloca (ibuffer_len + 1);
- string[i++] = c;
-
- while ((t = rl_get_char (&key)) &&
- (_rl_keymap[key].type == ISFUNC &&
- _rl_keymap[key].function == rl_insert))
- string[i++] = key;
-
- if (t)
- rl_unget_char (key);
-
- string[i] = '\0';
- rl_insert_text (string);
- return;
- }
- else
- {
- /* Inserting a single character. */
- string = (char *)alloca (2);
-
- string[1] = '\0';
- string[0] = c;
- rl_insert_text (string);
- }
-}
-
-/* Insert the next typed character verbatim. */
-rl_quoted_insert (count)
- int count;
-{
- int c;
-
- c = rl_read_key ();
- rl_insert (count, c);
-}
-
-/* Insert a tab character. */
-rl_tab_insert (count)
- int count;
-{
- rl_insert (count, '\t');
-}
-
-/* What to do when a NEWLINE is pressed. We accept the whole line.
- KEY is the key that invoked this command. I guess it could have
- meaning in the future. */
-rl_newline (count, key)
- int count, key;
-{
-
- rl_done = 1;
-
-#if defined (VI_MODE)
- {
- extern int _rl_vi_doing_insert;
- if (_rl_vi_doing_insert)
- {
- rl_end_undo_group ();
- _rl_vi_doing_insert = 0;
- }
- }
- rl_vi_set_last ();
-
-#endif /* VI_MODE */
-
- if (readline_echoing_p)
- {
- _rl_move_vert (_rl_vis_botlin);
- _rl_vis_botlin = 0;
- crlf ();
- fflush (out_stream);
- rl_display_fixed++;
- }
-}
-
-rl_clean_up_for_exit ()
-{
- if (readline_echoing_p)
- {
- _rl_move_vert (_rl_vis_botlin);
- _rl_vis_botlin = 0;
- fflush (out_stream);
- rl_restart_output ();
- }
-}
-
-/* What to do for some uppercase characters, like meta characters,
- and some characters appearing in emacs_ctlx_keymap. This function
- is just a stub, you bind keys to it and the code in rl_dispatch ()
- is special cased. */
-rl_do_lowercase_version (ignore1, ignore2)
- int ignore1, ignore2;
-{
-}
-
-/* Rubout the character behind point. */
-rl_rubout (count)
- int count;
-{
- if (count < 0)
- {
- rl_delete (-count);
- return;
- }
-
- if (!rl_point)
- {
- ding ();
- return;
- }
-
- if (count > 1 || rl_explicit_arg)
- {
- int orig_point = rl_point;
- rl_backward (count);
- rl_kill_text (orig_point, rl_point);
- }
- else
- {
- int c = the_line[--rl_point];
- rl_delete_text (rl_point, rl_point + 1);
-
- if (rl_point == rl_end && isprint (c) && _rl_last_c_pos)
- {
- int l;
- l = rl_character_len (c, rl_point);
- _rl_erase_at_end_of_line (l);
- }
- }
-}
-
-/* Delete the character under the cursor. Given a numeric argument,
- kill that many characters instead. */
-rl_delete (count, invoking_key)
- int count, invoking_key;
-{
- if (count < 0)
- {
- rl_rubout (-count);
- return;
- }
-
- if (rl_point == rl_end)
- {
- ding ();
- return;
- }
-
- if (count > 1 || rl_explicit_arg)
- {
- int orig_point = rl_point;
- rl_forward (count);
- rl_kill_text (orig_point, rl_point);
- rl_point = orig_point;
- }
- else
- rl_delete_text (rl_point, rl_point + 1);
-}
-
-/* Delete all spaces and tabs around point. */
-rl_delete_horizontal_space (count, ignore)
- int count, ignore;
-{
- int start = rl_point;
-
- while (rl_point && whitespace (the_line[rl_point - 1]))
- rl_point--;
-
- start = rl_point;
-
- while (rl_point < rl_end && whitespace (the_line[rl_point]))
- rl_point++;
-
- if (start == rl_point)
- return;
- else
- {
- rl_delete_text (start, rl_point);
- rl_point = start;
- }
-}
-\f
-/* **************************************************************** */
-/* */
-/* Kill commands */
-/* */
-/* **************************************************************** */
-
-/* The next two functions mimic unix line editing behaviour, except they
- save the deleted text on the kill ring. This is safer than not saving
- it, and since we have a ring, nobody should get screwed. */
-
-/* This does what C-w does in Unix. We can't prevent people from
- using behaviour that they expect. */
-rl_unix_word_rubout ()
-{
- if (!rl_point)
- ding ();
- else
- {
- int orig_point = rl_point;
-
- while (rl_point && whitespace (the_line[rl_point - 1]))
- rl_point--;
-
- while (rl_point && !whitespace (the_line[rl_point - 1]))
- rl_point--;
-
- rl_kill_text (rl_point, orig_point);
- }
-}
-
-/* Here is C-u doing what Unix does. You don't *have* to use these
- key-bindings. We have a choice of killing the entire line, or
- killing from where we are to the start of the line. We choose the
- latter, because if you are a Unix weenie, then you haven't backspaced
- into the line at all, and if you aren't, then you know what you are
- doing. */
-rl_unix_line_discard ()
-{
- if (!rl_point)
- ding ();
- else
- {
- rl_kill_text (rl_point, 0);
- rl_point = 0;
- }
-}
-
-\f
-/* **************************************************************** */
-/* */
-/* Commands For Typos */
-/* */
-/* **************************************************************** */
-
-/* Random and interesting things in here. */
-
-/* **************************************************************** */
-/* */
-/* Changing Case */
-/* */
-/* **************************************************************** */
-
-/* The three kinds of things that we know how to do. */
-#define UpCase 1
-#define DownCase 2
-#define CapCase 3
-
-/* Uppercase the word at point. */
-rl_upcase_word (count)
- int count;
-{
- rl_change_case (count, UpCase);
-}
-
-/* Lowercase the word at point. */
-rl_downcase_word (count)
- int count;
-{
- rl_change_case (count, DownCase);
-}
-
-/* Upcase the first letter, downcase the rest. */
-rl_capitalize_word (count)
- int count;
-{
- rl_change_case (count, CapCase);
-}
-
-/* The meaty function.
- Change the case of COUNT words, performing OP on them.
- OP is one of UpCase, DownCase, or CapCase.
- If a negative argument is given, leave point where it started,
- otherwise, leave it where it moves to. */
-rl_change_case (count, op)
- int count, op;
-{
- register int start = rl_point, end;
- int state = 0;
-
- rl_forward_word (count);
- end = rl_point;
-
- if (count < 0)
- {
- int temp = start;
- start = end;
- end = temp;
- }
-
- /* We are going to modify some text, so let's prepare to undo it. */
- rl_modifying (start, end);
-
- for (; start < end; start++)
- {
- switch (op)
- {
- case UpCase:
- the_line[start] = to_upper (the_line[start]);
- break;
-
- case DownCase:
- the_line[start] = to_lower (the_line[start]);
- break;
-
- case CapCase:
- if (state == 0)
- {
- the_line[start] = to_upper (the_line[start]);
- state = 1;
- }
- else
- {
- the_line[start] = to_lower (the_line[start]);
- }
- if (!pure_alphabetic (the_line[start]))
- state = 0;
- break;
-
- default:
- abort ();
- }
- }
- rl_point = end;
-}
-
-/* **************************************************************** */
-/* */
-/* Transposition */
-/* */
-/* **************************************************************** */
-
-/* Transpose the words at point. */
-rl_transpose_words (count)
- int count;
-{
- char *word1, *word2;
- int w1_beg, w1_end, w2_beg, w2_end;
- int orig_point = rl_point;
-
- if (!count) return;
-
- /* Find the two words. */
- rl_forward_word (count);
- w2_end = rl_point;
- rl_backward_word (1);
- w2_beg = rl_point;
- rl_backward_word (count);
- w1_beg = rl_point;
- rl_forward_word (1);
- w1_end = rl_point;
-
- /* Do some check to make sure that there really are two words. */
- if ((w1_beg == w2_beg) || (w2_beg < w1_end))
- {
- ding ();
- rl_point = orig_point;
- return;
- }
-
- /* Get the text of the words. */
- word1 = rl_copy_text (w1_beg, w1_end);
- word2 = rl_copy_text (w2_beg, w2_end);
-
- /* We are about to do many insertions and deletions. Remember them
- as one operation. */
- rl_begin_undo_group ();
-
- /* Do the stuff at word2 first, so that we don't have to worry
- about word1 moving. */
- rl_point = w2_beg;
- rl_delete_text (w2_beg, w2_end);
- rl_insert_text (word1);
-
- rl_point = w1_beg;
- rl_delete_text (w1_beg, w1_end);
- rl_insert_text (word2);
-
- /* This is exactly correct since the text before this point has not
- changed in length. */
- rl_point = w2_end;
-
- /* I think that does it. */
- rl_end_undo_group ();
- free (word1); free (word2);
-}
-
-/* Transpose the characters at point. If point is at the end of the line,
- then transpose the characters before point. */
-rl_transpose_chars (count)
- int count;
-{
- char dummy[2];
-
- if (!count)
- return;
-
- if (!rl_point || rl_end < 2)
- {
- ding ();
- return;
- }
-
- rl_begin_undo_group ();
-
- if (rl_point == rl_end)
- {
- --rl_point;
- count = 1;
- }
- rl_point--;
-
- dummy[0] = the_line[rl_point];
- dummy[1] = '\0';
-
- rl_delete_text (rl_point, rl_point + 1);
-
- rl_point += count;
- if (rl_point > rl_end)
- rl_point = rl_end;
- else if (rl_point < 0)
- rl_point = 0;
- rl_insert_text (dummy);
-
- rl_end_undo_group ();
-}
-\f
-/* **************************************************************** */
-/* */
-/* Undo, and Undoing */
-/* */
-/* **************************************************************** */
-
-/* Non-zero tells rl_delete_text and rl_insert_text to not add to
- the undo list. */
-static int doing_an_undo = 0;
-
-/* The current undo list for THE_LINE. */
-UNDO_LIST *rl_undo_list = (UNDO_LIST *)NULL;
-
-/* Remember how to undo something. Concatenate some undos if that
- seems right. */
-rl_add_undo (what, start, end, text)
- enum undo_code what;
- int start, end;
- char *text;
-{
- UNDO_LIST *temp = (UNDO_LIST *)xmalloc (sizeof (UNDO_LIST));
- temp->what = what;
- temp->start = start;
- temp->end = end;
- temp->text = text;
- temp->next = rl_undo_list;
- rl_undo_list = temp;
-}
-
-/* Free the existing undo list. */
-free_undo_list ()
-{
- while (rl_undo_list)
- {
- UNDO_LIST *release = rl_undo_list;
- rl_undo_list = rl_undo_list->next;
-
- if (release->what == UNDO_DELETE)
- free (release->text);
-
- free (release);
- }
- rl_undo_list = (UNDO_LIST *)NULL;
-}
-
-/* Undo the next thing in the list. Return 0 if there
- is nothing to undo, or non-zero if there was. */
-int
-rl_do_undo ()
-{
- UNDO_LIST *release;
- int waiting_for_begin = 0;
-
-undo_thing:
- if (!rl_undo_list)
- return (0);
-
- doing_an_undo = 1;
-
- switch (rl_undo_list->what) {
-
- /* Undoing deletes means inserting some text. */
- case UNDO_DELETE:
- rl_point = rl_undo_list->start;
- rl_insert_text (rl_undo_list->text);
- free (rl_undo_list->text);
- break;
-
- /* Undoing inserts means deleting some text. */
- case UNDO_INSERT:
- rl_delete_text (rl_undo_list->start, rl_undo_list->end);
- rl_point = rl_undo_list->start;
- break;
-
- /* Undoing an END means undoing everything 'til we get to
- a BEGIN. */
- case UNDO_END:
- waiting_for_begin++;
- break;
-
- /* Undoing a BEGIN means that we are done with this group. */
- case UNDO_BEGIN:
- if (waiting_for_begin)
- waiting_for_begin--;
- else
-#if 0
- abort ();
-#else
- ding ();
-#endif
- break;
- }
-
- doing_an_undo = 0;
-
- release = rl_undo_list;
- rl_undo_list = rl_undo_list->next;
- free (release);
-
- if (waiting_for_begin)
- goto undo_thing;
-
- return (1);
-}
-
-/* Begin a group. Subsequent undos are undone as an atomic operation. */
-rl_begin_undo_group ()
-{
- rl_add_undo (UNDO_BEGIN, 0, 0, 0);
-}
-
-/* End an undo group started with rl_begin_undo_group (). */
-rl_end_undo_group ()
-{
- rl_add_undo (UNDO_END, 0, 0, 0);
-}
-
-/* Save an undo entry for the text from START to END. */
-rl_modifying (start, end)
- int start, end;
-{
- if (start > end)
- {
- int t = start;
- start = end;
- end = t;
- }
-
- if (start != end)
- {
- char *temp = rl_copy_text (start, end);
- rl_begin_undo_group ();
- rl_add_undo (UNDO_DELETE, start, end, temp);
- rl_add_undo (UNDO_INSERT, start, end, (char *)NULL);
- rl_end_undo_group ();
- }
-}
-
-/* Revert the current line to its previous state. */
-rl_revert_line ()
-{
- if (!rl_undo_list)
- ding ();
- else
- {
- while (rl_undo_list)
- rl_do_undo ();
- }
-}
-
-/* Do some undoing of things that were done. */
-rl_undo_command (count)
-{
- if (count < 0) return; /* Nothing to do. */
-
- while (count)
- {
- if (rl_do_undo ())
- {
- count--;
- }
- else
- {
- ding ();
- break;
- }
- }
-}
-\f
-/* **************************************************************** */
-/* */
-/* History Utilities */
-/* */
-/* **************************************************************** */
-
-/* We already have a history library, and that is what we use to control
- the history features of readline. However, this is our local interface
- to the history mechanism. */
-
-/* While we are editing the history, this is the saved
- version of the original line. */
-HIST_ENTRY *saved_line_for_history = (HIST_ENTRY *)NULL;
-
-/* Set the history pointer back to the last entry in the history. */
-start_using_history ()
-{
- using_history ();
- if (saved_line_for_history)
- free_history_entry (saved_line_for_history);
-
- saved_line_for_history = (HIST_ENTRY *)NULL;
-}
-
-/* Free the contents (and containing structure) of a HIST_ENTRY. */
-void
-free_history_entry (entry)
- HIST_ENTRY *entry;
-{
- if (!entry) return;
- if (entry->line)
- free (entry->line);
- free (entry);
-}
-
-/* Perhaps put back the current line if it has changed. */
-maybe_replace_line ()
-{
- HIST_ENTRY *temp = current_history ();
-
- /* If the current line has changed, save the changes. */
- if (temp && ((UNDO_LIST *)(temp->data) != rl_undo_list))
- {
- temp = replace_history_entry (where_history (), the_line, rl_undo_list);
- free (temp->line);
- free (temp);
- }
-}
-
-/* Put back the saved_line_for_history if there is one. */
-maybe_unsave_line ()
-{
- if (saved_line_for_history)
- {
- int line_len;
-
- line_len = strlen (saved_line_for_history->line);
-
- if (line_len >= rl_line_buffer_len)
- rl_extend_line_buffer (line_len);
-
- strcpy (the_line, saved_line_for_history->line);
- rl_undo_list = (UNDO_LIST *)saved_line_for_history->data;
- free_history_entry (saved_line_for_history);
- saved_line_for_history = (HIST_ENTRY *)NULL;
- rl_end = rl_point = strlen (the_line);
- }
- else
- ding ();
-}
-
-/* Save the current line in saved_line_for_history. */
-maybe_save_line ()
-{
- if (!saved_line_for_history)
- {
- saved_line_for_history = (HIST_ENTRY *)xmalloc (sizeof (HIST_ENTRY));
- saved_line_for_history->line = savestring (the_line);
- saved_line_for_history->data = (char *)rl_undo_list;
- }
-}
-\f
-/* **************************************************************** */
-/* */
-/* History Commands */
-/* */
-/* **************************************************************** */
-
-/* Meta-< goes to the start of the history. */
-rl_beginning_of_history ()
-{
- rl_get_previous_history (1 + where_history ());
-}
-
-/* Meta-> goes to the end of the history. (The current line). */
-rl_end_of_history ()
-{
- maybe_replace_line ();
- using_history ();
- maybe_unsave_line ();
-}
-
-/* Move down to the next history line. */
-rl_get_next_history (count)
- int count;
-{
- HIST_ENTRY *temp = (HIST_ENTRY *)NULL;
-
- if (count < 0)
- {
- rl_get_previous_history (-count);
- return;
- }
-
- if (!count)
- return;
-
- maybe_replace_line ();
-
- while (count)
- {
- temp = next_history ();
- if (!temp)
- break;
- --count;
- }
-
- if (!temp)
- maybe_unsave_line ();
- else
- {
- int line_len;
-
- line_len = strlen (temp->line);
-
- if (line_len >= rl_line_buffer_len)
- rl_extend_line_buffer (line_len);
-
- strcpy (the_line, temp->line);
- rl_undo_list = (UNDO_LIST *)temp->data;
- rl_end = rl_point = strlen (the_line);
-#if defined (VI_MODE)
- if (rl_editing_mode == vi_mode)
- rl_point = 0;
-#endif /* VI_MODE */
- }
-}
-
-/* Get the previous item out of our interactive history, making it the current
- line. If there is no previous history, just ding. */
-rl_get_previous_history (count)
- int count;
-{
- HIST_ENTRY *old_temp = (HIST_ENTRY *)NULL;
- HIST_ENTRY *temp = (HIST_ENTRY *)NULL;
-
- if (count < 0)
- {
- rl_get_next_history (-count);
- return;
- }
-
- if (!count)
- return;
-
- /* If we don't have a line saved, then save this one. */
- maybe_save_line ();
-
- /* If the current line has changed, save the changes. */
- maybe_replace_line ();
-
- while (count)
- {
- temp = previous_history ();
- if (!temp)
- break;
- else
- old_temp = temp;
- --count;
- }
-
- /* If there was a large argument, and we moved back to the start of the
- history, that is not an error. So use the last value found. */
- if (!temp && old_temp)
- temp = old_temp;
-
- if (!temp)
- ding ();
- else
- {
- int line_len;
-
- line_len = strlen (temp->line);
-
- if (line_len >= rl_line_buffer_len)
- rl_extend_line_buffer (line_len);
-
- strcpy (the_line, temp->line);
- rl_undo_list = (UNDO_LIST *)temp->data;
- rl_end = rl_point = line_len;
-
-#if defined (VI_MODE)
- if (rl_editing_mode == vi_mode)
- rl_point = 0;
-#endif /* VI_MODE */
- }
-}
-
-/* Make C be the next command to be executed. */
-rl_execute_next (c)
- int c;
-{
- rl_pending_input = c;
-}
-
-/* **************************************************************** */
-/* */
-/* The Mark and the Region. */
-/* */
-/* **************************************************************** */
-
-/* Set the mark at POSITION. */
-rl_set_mark (position)
- int position;
-{
- if (position > rl_end)
- return;
-
- rl_mark = position;
-}
-
-/* Exchange the position of mark and point. */
-rl_exchange_mark_and_point ()
-{
- if (rl_mark > rl_end)
- rl_mark = -1;
-
- if (rl_mark == -1)
- {
- ding ();
- return;
- }
- else
- {
- int temp = rl_point;
-
- rl_point = rl_mark;
- rl_mark = temp;
- }
-}
-
-\f
-/* **************************************************************** */
-/* */
-/* Killing Mechanism */
-/* */
-/* **************************************************************** */
-
-/* What we assume for a max number of kills. */
-#define DEFAULT_MAX_KILLS 10
-
-/* The real variable to look at to find out when to flush kills. */
-int rl_max_kills = DEFAULT_MAX_KILLS;
-
-/* Where to store killed text. */
-char **rl_kill_ring = (char **)NULL;
-
-/* Where we are in the kill ring. */
-int rl_kill_index = 0;
-
-/* How many slots we have in the kill ring. */
-int rl_kill_ring_length = 0;
-
-/* How to say that you only want to save a certain amount
- of kill material. */
-rl_set_retained_kills (num)
- int num;
-{}
-
-/* The way to kill something. This appends or prepends to the last
- kill, if the last command was a kill command. if FROM is less
- than TO, then the text is appended, otherwise prepended. If the
- last command was not a kill command, then a new slot is made for
- this kill. */
-rl_kill_text (from, to)
- int from, to;
-{
- int slot;
- char *text = rl_copy_text (from, to);
-
- /* Is there anything to kill? */
- if (from == to)
- {
- free (text);
- last_command_was_kill++;
- return;
- }
-
- /* Delete the copied text from the line. */
- rl_delete_text (from, to);
-
- /* First, find the slot to work with. */
- if (!last_command_was_kill)
- {
- /* Get a new slot. */
- if (!rl_kill_ring)
- {
- /* If we don't have any defined, then make one. */
- rl_kill_ring = (char **)
- xmalloc (((rl_kill_ring_length = 1) + 1) * sizeof (char *));
- slot = 1;
- }
- else
- {
- /* We have to add a new slot on the end, unless we have
- exceeded the max limit for remembering kills. */
- slot = rl_kill_ring_length;
- if (slot == rl_max_kills)
- {
- register int i;
- free (rl_kill_ring[0]);
- for (i = 0; i < slot; i++)
- rl_kill_ring[i] = rl_kill_ring[i + 1];
- }
- else
- {
- rl_kill_ring =
- (char **)
- xrealloc (rl_kill_ring,
- ((slot = (rl_kill_ring_length += 1)) + 1)
- * sizeof (char *));
- }
- }
- slot--;
- }
- else
- {
- slot = rl_kill_ring_length - 1;
- }
-
- /* If the last command was a kill, prepend or append. */
- if (last_command_was_kill && rl_editing_mode != vi_mode)
- {
- char *old = rl_kill_ring[slot];
- char *new = (char *)xmalloc (1 + strlen (old) + strlen (text));
-
- if (from < to)
- {
- strcpy (new, old);
- strcat (new, text);
- }
- else
- {
- strcpy (new, text);
- strcat (new, old);
- }
- free (old);
- free (text);
- rl_kill_ring[slot] = new;
- }
- else
- {
- rl_kill_ring[slot] = text;
- }
- rl_kill_index = slot;
- last_command_was_kill++;
-}
-
-/* Now REMEMBER! In order to do prepending or appending correctly, kill
- commands always make rl_point's original position be the FROM argument,
- and rl_point's extent be the TO argument. */
-
-/* **************************************************************** */
-/* */
-/* Killing Commands */
-/* */
-/* **************************************************************** */
-
-/* Delete the word at point, saving the text in the kill ring. */
-rl_kill_word (count)
- int count;
-{
- int orig_point = rl_point;
-
- if (count < 0)
- rl_backward_kill_word (-count);
- else
- {
- rl_forward_word (count);
-
- if (rl_point != orig_point)
- rl_kill_text (orig_point, rl_point);
-
- rl_point = orig_point;
- }
-}
-
-/* Rubout the word before point, placing it on the kill ring. */
-rl_backward_kill_word (count)
- int count;
-{
- int orig_point = rl_point;
-
- if (count < 0)
- rl_kill_word (-count);
- else
- {
- rl_backward_word (count);
-
- if (rl_point != orig_point)
- rl_kill_text (orig_point, rl_point);
- }
-}
-
-/* Kill from here to the end of the line. If DIRECTION is negative, kill
- back to the line start instead. */
-rl_kill_line (direction)
- int direction;
-{
- int orig_point = rl_point;
-
- if (direction < 0)
- rl_backward_kill_line (1);
- else
- {
- rl_end_of_line ();
- if (orig_point != rl_point)
- rl_kill_text (orig_point, rl_point);
- rl_point = orig_point;
- }
-}
-
-/* Kill backwards to the start of the line. If DIRECTION is negative, kill
- forwards to the line end instead. */
-rl_backward_kill_line (direction)
- int direction;
-{
- int orig_point = rl_point;
-
- if (direction < 0)
- rl_kill_line (1);
- else
- {
- if (!rl_point)
- ding ();
- else
- {
- rl_beg_of_line ();
- rl_kill_text (orig_point, rl_point);
- }
- }
-}
-
-/* Yank back the last killed text. This ignores arguments. */
-rl_yank ()
-{
- if (!rl_kill_ring)
- rl_abort ();
-
- rl_set_mark (rl_point);
- rl_insert_text (rl_kill_ring[rl_kill_index]);
-}
-
-/* If the last command was yank, or yank_pop, and the text just
- before point is identical to the current kill item, then
- delete that text from the line, rotate the index down, and
- yank back some other text. */
-rl_yank_pop ()
-{
- int l;
-
- if (((rl_last_func != rl_yank_pop) && (rl_last_func != rl_yank)) ||
- !rl_kill_ring)
- {
- rl_abort ();
- }
-
- l = strlen (rl_kill_ring[rl_kill_index]);
- if (((rl_point - l) >= 0) &&
- (strncmp (the_line + (rl_point - l),
- rl_kill_ring[rl_kill_index], l) == 0))
- {
- rl_delete_text ((rl_point - l), rl_point);
- rl_point -= l;
- rl_kill_index--;
- if (rl_kill_index < 0)
- rl_kill_index = rl_kill_ring_length - 1;
- rl_yank ();
- }
- else
- rl_abort ();
-
-}
-
-/* Yank the COUNTth argument from the previous history line. */
-rl_yank_nth_arg (count, ignore)
- int count;
-{
- register HIST_ENTRY *entry = previous_history ();
- char *arg;
-
- if (entry)
- next_history ();
- else
- {
- ding ();
- return;
- }
-
- arg = history_arg_extract (count, count, entry->line);
- if (!arg || !*arg)
- {
- ding ();
- return;
- }
-
- rl_begin_undo_group ();
-
-#if defined (VI_MODE)
- /* Vi mode always inserts a space before yanking the argument, and it
- inserts it right *after* rl_point. */
- if (rl_editing_mode == vi_mode)
- rl_point++;
-#endif /* VI_MODE */
-
- if (rl_point && the_line[rl_point - 1] != ' ')
- rl_insert_text (" ");
-
- rl_insert_text (arg);
- free (arg);
-
- rl_end_undo_group ();
-}
-
-/* How to toggle back and forth between editing modes. */
-rl_vi_editing_mode ()
-{
-#if defined (VI_MODE)
- rl_editing_mode = vi_mode;
- rl_vi_insertion_mode ();
-#endif /* VI_MODE */
-}
-
-rl_emacs_editing_mode ()
-{
- rl_editing_mode = emacs_mode;
- _rl_keymap = emacs_standard_keymap;
-}
-
-\f
-/* **************************************************************** */
-/* */
-/* USG (System V) Support */
-/* */
-/* **************************************************************** */
-
-int
-rl_getc (stream)
- FILE *stream;
-{
- int result;
- unsigned char c;
-
-#ifdef __GO32__
- if (isatty (0))
- return (getkey () & 0x7f);
-#endif /* __GO32__ */
-
- while (1)
- {
- result = read (fileno (stream), &c, sizeof (unsigned char));
-
- if (result == sizeof (unsigned char))
- return (c);
-
- /* If zero characters are returned, then the file that we are
- reading from is empty! Return EOF in that case. */
- if (result == 0)
- return (EOF);
-
-#if defined (EWOULDBLOCK)
- if (errno == EWOULDBLOCK)
- {
- int flags;
-
- if ((flags = fcntl (fileno (stream), F_GETFL, 0)) < 0)
- return (EOF);
- if (flags & O_NDELAY)
- {
- flags &= ~O_NDELAY;
- fcntl (fileno (stream), F_SETFL, flags);
- continue;
- }
- continue;
- }
-#endif /* EWOULDBLOCK */
-
-#if defined (_POSIX_VERSION) && defined (EAGAIN) && defined (O_NONBLOCK)
- if (errno == EAGAIN)
- {
- int flags;
-
- if ((flags = fcntl (fileno (stream), F_GETFL, 0)) < 0)
- return (EOF);
- if (flags & O_NONBLOCK)
- {
- flags &= ~O_NONBLOCK;
- fcntl (fileno (stream), F_SETFL, flags);
- continue;
- }
- }
-#endif /* _POSIX_VERSION && EAGAIN && O_NONBLOCK */
-
-#ifndef __GO32__
- /* If the error that we received was SIGINT, then try again,
- this is simply an interrupted system call to read ().
- Otherwise, some error ocurred, also signifying EOF. */
- if (errno != EINTR)
- return (EOF);
-#endif /* !__GO32__ */
- }
-}
-
-#if defined (STATIC_MALLOC)
-\f
-/* **************************************************************** */
-/* */
-/* xmalloc and xrealloc () */
-/* */
-/* **************************************************************** */
-
-static void memory_error_and_abort ();
-
-static char *
-xmalloc (bytes)
- int bytes;
-{
- char *temp = (char *)malloc (bytes);
-
- if (!temp)
- memory_error_and_abort ();
- return (temp);
-}
-
-static char *
-xrealloc (pointer, bytes)
- char *pointer;
- int bytes;
-{
- char *temp;
-
- if (!pointer)
- temp = (char *)malloc (bytes);
- else
- temp = (char *)realloc (pointer, bytes);
-
- if (!temp)
- memory_error_and_abort ();
-
- return (temp);
-}
-
-static void
-memory_error_and_abort ()
-{
- fprintf (stderr, "readline: Out of virtual memory!\n");
- abort ();
-}
-#endif /* STATIC_MALLOC */
-
-\f
-/* **************************************************************** */
-/* */
-/* Testing Readline */
-/* */
-/* **************************************************************** */
-
-#if defined (TEST)
-
-main ()
-{
- HIST_ENTRY **history_list ();
- char *temp = (char *)NULL;
- char *prompt = "readline% ";
- int done = 0;
-
- while (!done)
- {
- temp = readline (prompt);
-
- /* Test for EOF. */
- if (!temp)
- exit (1);
-
- /* If there is anything on the line, print it and remember it. */
- if (*temp)
- {
- fprintf (stderr, "%s\r\n", temp);
- add_history (temp);
- }
-
- /* Check for `command' that we handle. */
- if (strcmp (temp, "quit") == 0)
- done = 1;
-
- if (strcmp (temp, "list") == 0)
- {
- HIST_ENTRY **list = history_list ();
- register int i;
- if (list)
- {
- for (i = 0; list[i]; i++)
- {
- fprintf (stderr, "%d: %s\r\n", i, list[i]->line);
- free (list[i]->line);
- }
- free (list);
- }
- }
- free (temp);
- }
-}
-
-#endif /* TEST */
-
-\f
-/*
- * Local variables:
- * compile-command: "gcc -g -traditional -I. -I.. -DTEST -o readline readline.c keymaps.o funmap.o history.o -ltermcap"
- * end:
- */
projects / deliverable / binutils-gdb.git / blobdiff