--- /dev/null
+/* text.c -- text handling commands for readline. */
+
+/* Copyright (C) 1987-2005 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 2, or
+ (at your option) any later version.
+
+ The GNU Readline Library is distributed in the hope that it will be
+ useful, but WITHOUT ANY WARRANTY; without even the implied warranty
+ of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ GNU General Public License for more details.
+
+ 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,
+ 59 Temple Place, Suite 330, Boston, MA 02111 USA. */
+#define READLINE_LIBRARY
+
+#if defined (HAVE_CONFIG_H)
+# include <config.h>
+#endif
+
+#if defined (HAVE_UNISTD_H)
+# include <unistd.h>
+#endif /* HAVE_UNISTD_H */
+
+#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 <stdio.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"
+
+#include "rlprivate.h"
+#include "rlshell.h"
+#include "xmalloc.h"
+
+/* Forward declarations. */
+static int rl_change_case PARAMS((int, int));
+static int _rl_char_search PARAMS((int, int, int));
+
+#if defined (READLINE_CALLBACKS)
+static int _rl_insert_next_callback PARAMS((_rl_callback_generic_arg *));
+static int _rl_char_search_callback PARAMS((_rl_callback_generic_arg *));
+#endif
+
+/* **************************************************************** */
+/* */
+/* 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_char () calls this
+ function. Returns the number of characters inserted. */
+int
+rl_insert_text (string)
+ const char *string;
+{
+ register int i, l;
+
+ l = (string && *string) ? strlen (string) : 0;
+ if (l == 0)
+ return 0;
+
+ if (rl_end + l >= rl_line_buffer_len)
+ rl_extend_line_buffer (rl_end + l);
+
+ for (i = rl_end; i >= rl_point; i--)
+ rl_line_buffer[i + l] = rl_line_buffer[i];
+ strncpy (rl_line_buffer + rl_point, string, l);
+
+ /* Remember how to undo this if we aren't undoing something. */
+ if (_rl_doing_an_undo == 0)
+ {
+ /* If possible and desirable, concatenate the undos. */
+ if ((l == 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;
+ rl_line_buffer[rl_end] = '\0';
+ return l;
+}
+
+/* Delete the string between FROM and TO. FROM is inclusive, TO is not.
+ Returns the number of characters deleted. */
+int
+rl_delete_text (from, to)
+ int from, to;
+{
+ register char *text;
+ register int diff, i;
+
+ /* Fix it if the caller is confused. */
+ if (from > to)
+ SWAP (from, to);
+
+ /* fix boundaries */
+ if (to > rl_end)
+ {
+ to = rl_end;
+ if (from > to)
+ from = to;
+ }
+ if (from < 0)
+ from = 0;
+
+ text = rl_copy_text (from, to);
+
+ /* Some versions of strncpy() can't handle overlapping arguments. */
+ diff = to - from;
+ for (i = from; i < rl_end - diff; i++)
+ rl_line_buffer[i] = rl_line_buffer[i + diff];
+
+ /* Remember how to undo this delete. */
+ if (_rl_doing_an_undo == 0)
+ rl_add_undo (UNDO_DELETE, from, to, text);
+ else
+ free (text);
+
+ rl_end -= diff;
+ rl_line_buffer[rl_end] = '\0';
+ return (diff);
+}
+
+/* Fix up point so that it is within the line boundaries after killing
+ text. If FIX_MARK_TOO is non-zero, the mark is forced within line
+ boundaries also. */
+
+#define _RL_FIX_POINT(x) \
+ do { \
+ if (x > rl_end) \
+ x = rl_end; \
+ else if (x < 0) \
+ x = 0; \
+ } while (0)
+
+void
+_rl_fix_point (fix_mark_too)
+ int fix_mark_too;
+{
+ _RL_FIX_POINT (rl_point);
+ if (fix_mark_too)
+ _RL_FIX_POINT (rl_mark);
+}
+#undef _RL_FIX_POINT
+
+/* Replace the contents of the line buffer between START and END with
+ TEXT. The operation is undoable. To replace the entire line in an
+ undoable mode, use _rl_replace_text(text, 0, rl_end); */
+int
+_rl_replace_text (text, start, end)
+ const char *text;
+ int start, end;
+{
+ int n;
+
+ rl_begin_undo_group ();
+ rl_delete_text (start, end + 1);
+ rl_point = start;
+ n = rl_insert_text (text);
+ rl_end_undo_group ();
+
+ return n;
+}
+
+/* Replace the current line buffer contents with TEXT. If CLEAR_UNDO is
+ non-zero, we free the current undo list. */
+void
+rl_replace_line (text, clear_undo)
+ const char *text;
+ int clear_undo;
+{
+ int len;
+
+ len = strlen (text);
+ if (len >= rl_line_buffer_len)
+ rl_extend_line_buffer (len);
+ strcpy (rl_line_buffer, text);
+ rl_end = len;
+
+ if (clear_undo)
+ rl_free_undo_list ();
+
+ _rl_fix_point (1);
+}
+
+/* **************************************************************** */
+/* */
+/* 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.
+*/
+
+/* **************************************************************** */
+/* */
+/* 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 bytes. */
+int
+rl_forward_byte (count, key)
+ int count, key;
+{
+ if (count < 0)
+ return (rl_backward_byte (-count, key));
+
+ if (count > 0)
+ {
+ int end = rl_point + count;
+#if defined (VI_MODE)
+ int lend = rl_end > 0 ? rl_end - (rl_editing_mode == vi_mode) : rl_end;
+#else
+ int lend = rl_end;
+#endif
+
+ if (end > lend)
+ {
+ rl_point = lend;
+ rl_ding ();
+ }
+ else
+ rl_point = end;
+ }
+
+ if (rl_end < 0)
+ rl_end = 0;
+
+ return 0;
+}
+
+#if defined (HANDLE_MULTIBYTE)
+/* Move forward COUNT characters. */
+int
+rl_forward_char (count, key)
+ int count, key;
+{
+ int point;
+
+ if (MB_CUR_MAX == 1 || rl_byte_oriented)
+ return (rl_forward_byte (count, key));
+
+ if (count < 0)
+ return (rl_backward_char (-count, key));
+
+ if (count > 0)
+ {
+ point = _rl_find_next_mbchar (rl_line_buffer, rl_point, count, MB_FIND_NONZERO);
+
+#if defined (VI_MODE)
+ if (rl_end <= point && rl_editing_mode == vi_mode)
+ point = _rl_find_prev_mbchar (rl_line_buffer, rl_end, MB_FIND_NONZERO);
+#endif
+
+ if (rl_point == point)
+ rl_ding ();
+
+ rl_point = point;
+
+ if (rl_end < 0)
+ rl_end = 0;
+ }
+
+ return 0;
+}
+#else /* !HANDLE_MULTIBYTE */
+int
+rl_forward_char (count, key)
+ int count, key;
+{
+ return (rl_forward_byte (count, key));
+}
+#endif /* !HANDLE_MULTIBYTE */
+
+/* Backwards compatibility. */
+int
+rl_forward (count, key)
+ int count, key;
+{
+ return (rl_forward_char (count, key));
+}
+
+/* Move backward COUNT bytes. */
+int
+rl_backward_byte (count, key)
+ int count, key;
+{
+ if (count < 0)
+ return (rl_forward_byte (-count, key));
+
+ if (count > 0)
+ {
+ if (rl_point < count)
+ {
+ rl_point = 0;
+ rl_ding ();
+ }
+ else
+ rl_point -= count;
+ }
+
+ if (rl_point < 0)
+ rl_point = 0;
+
+ return 0;
+}
+
+#if defined (HANDLE_MULTIBYTE)
+/* Move backward COUNT characters. */
+int
+rl_backward_char (count, key)
+ int count, key;
+{
+ int point;
+
+ if (MB_CUR_MAX == 1 || rl_byte_oriented)
+ return (rl_backward_byte (count, key));
+
+ if (count < 0)
+ return (rl_forward_char (-count, key));
+
+ if (count > 0)
+ {
+ point = rl_point;
+
+ while (count > 0 && point > 0)
+ {
+ point = _rl_find_prev_mbchar (rl_line_buffer, point, MB_FIND_NONZERO);
+ count--;
+ }
+ if (count > 0)
+ {
+ rl_point = 0;
+ rl_ding ();
+ }
+ else
+ rl_point = point;
+ }
+
+ return 0;
+}
+#else
+int
+rl_backward_char (count, key)
+ int count, key;
+{
+ return (rl_backward_byte (count, key));
+}
+#endif
+
+/* Backwards compatibility. */
+int
+rl_backward (count, key)
+ int count, key;
+{
+ return (rl_backward_char (count, key));
+}
+
+/* Move to the beginning of the line. */
+int
+rl_beg_of_line (count, key)
+ int count, key;
+{
+ rl_point = 0;
+ return 0;
+}
+
+/* Move to the end of the line. */
+int
+rl_end_of_line (count, key)
+ int count, key;
+{
+ rl_point = rl_end;
+ return 0;
+}
+
+/* Move forward a word. We do what Emacs does. Handles multibyte chars. */
+int
+rl_forward_word (count, key)
+ int count, key;
+{
+ int c;
+
+ if (count < 0)
+ return (rl_backward_word (-count, key));
+
+ while (count)
+ {
+ if (rl_point == rl_end)
+ return 0;
+
+ /* 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 = _rl_char_value (rl_line_buffer, rl_point);
+
+ if (_rl_walphabetic (c) == 0)
+ {
+ rl_point = MB_NEXTCHAR (rl_line_buffer, rl_point, 1, MB_FIND_NONZERO);
+ while (rl_point < rl_end)
+ {
+ c = _rl_char_value (rl_line_buffer, rl_point);
+ if (_rl_walphabetic (c))
+ break;
+ rl_point = MB_NEXTCHAR (rl_line_buffer, rl_point, 1, MB_FIND_NONZERO);
+ }
+ }
+
+ if (rl_point == rl_end)
+ return 0;
+
+ rl_point = MB_NEXTCHAR (rl_line_buffer, rl_point, 1, MB_FIND_NONZERO);
+ while (rl_point < rl_end)
+ {
+ c = _rl_char_value (rl_line_buffer, rl_point);
+ if (_rl_walphabetic (c) == 0)
+ break;
+ rl_point = MB_NEXTCHAR (rl_line_buffer, rl_point, 1, MB_FIND_NONZERO);
+ }
+
+ --count;
+ }
+
+ return 0;
+}
+
+/* Move backward a word. We do what Emacs does. Handles multibyte chars. */
+int
+rl_backward_word (count, key)
+ int count, key;
+{
+ int c, p;
+
+ if (count < 0)
+ return (rl_forward_word (-count, key));
+
+ while (count)
+ {
+ if (rl_point == 0)
+ return 0;
+
+ /* Like rl_forward_word (), except that we look at the characters
+ just before point. */
+
+ p = MB_PREVCHAR (rl_line_buffer, rl_point, MB_FIND_NONZERO);
+ c = _rl_char_value (rl_line_buffer, p);
+
+ if (_rl_walphabetic (c) == 0)
+ {
+ rl_point = p;
+ while (rl_point > 0)
+ {
+ p = MB_PREVCHAR (rl_line_buffer, rl_point, MB_FIND_NONZERO);
+ c = _rl_char_value (rl_line_buffer, p);
+ if (_rl_walphabetic (c))
+ break;
+ rl_point = p;
+ }
+ }
+
+ while (rl_point)
+ {
+ p = MB_PREVCHAR (rl_line_buffer, rl_point, MB_FIND_NONZERO);
+ c = _rl_char_value (rl_line_buffer, p);
+ if (_rl_walphabetic (c) == 0)
+ break;
+ else
+ rl_point = p;
+ }
+
+ --count;
+ }
+
+ return 0;
+}
+
+/* Clear the current line. Numeric argument to C-l does this. */
+int
+rl_refresh_line (ignore1, ignore2)
+ int ignore1, ignore2;
+{
+ int curr_line;
+
+ curr_line = _rl_current_display_line ();
+
+ _rl_move_vert (curr_line);
+ _rl_move_cursor_relative (0, rl_line_buffer); /* XXX is this right */
+
+ _rl_clear_to_eol (0); /* arg of 0 means to not use spaces */
+
+ rl_forced_update_display ();
+ rl_display_fixed = 1;
+
+ return 0;
+}
+
+/* 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. */
+int
+rl_clear_screen (count, key)
+ int count, key;
+{
+ if (rl_explicit_arg)
+ {
+ rl_refresh_line (count, key);
+ return 0;
+ }
+
+ _rl_clear_screen (); /* calls termcap function to clear screen */
+ rl_forced_update_display ();
+ rl_display_fixed = 1;
+
+ return 0;
+}
+
+int
+rl_arrow_keys (count, c)
+ int count, c;
+{
+ int ch;
+
+ RL_SETSTATE(RL_STATE_MOREINPUT);
+ ch = rl_read_key ();
+ RL_UNSETSTATE(RL_STATE_MOREINPUT);
+
+ switch (_rl_to_upper (ch))
+ {
+ case 'A':
+ rl_get_previous_history (count, ch);
+ break;
+
+ case 'B':
+ rl_get_next_history (count, ch);
+ break;
+
+ case 'C':
+ if (MB_CUR_MAX > 1 && rl_byte_oriented == 0)
+ rl_forward_char (count, ch);
+ else
+ rl_forward_byte (count, ch);
+ break;
+
+ case 'D':
+ if (MB_CUR_MAX > 1 && rl_byte_oriented == 0)
+ rl_backward_char (count, ch);
+ else
+ rl_backward_byte (count, ch);
+ break;
+
+ default:
+ rl_ding ();
+ }
+
+ return 0;
+}
+
+/* **************************************************************** */
+/* */
+/* Text commands */
+/* */
+/* **************************************************************** */
+
+#ifdef HANDLE_MULTIBYTE
+static char pending_bytes[MB_LEN_MAX];
+static int pending_bytes_length = 0;
+static mbstate_t ps = {0};
+#endif
+
+/* Insert the character C at the current location, moving point forward.
+ If C introduces a multibyte sequence, we read the whole sequence and
+ then insert the multibyte char into the line buffer. */
+int
+_rl_insert_char (count, c)
+ int count, c;
+{
+ register int i;
+ char *string;
+#ifdef HANDLE_MULTIBYTE
+ int string_size;
+ char incoming[MB_LEN_MAX + 1];
+ int incoming_length = 0;
+ mbstate_t ps_back;
+ static int stored_count = 0;
+#endif
+
+ if (count <= 0)
+ return 0;
+
+#if defined (HANDLE_MULTIBYTE)
+ if (MB_CUR_MAX == 1 || rl_byte_oriented)
+ {
+ incoming[0] = c;
+ incoming[1] = '\0';
+ incoming_length = 1;
+ }
+ else
+ {
+ wchar_t wc;
+ size_t ret;
+
+ if (stored_count <= 0)
+ stored_count = count;
+ else
+ count = stored_count;
+
+ ps_back = ps;
+ pending_bytes[pending_bytes_length++] = c;
+ ret = mbrtowc (&wc, pending_bytes, pending_bytes_length, &ps);
+
+ if (ret == (size_t)-2)
+ {
+ /* Bytes too short to compose character, try to wait for next byte.
+ Restore the state of the byte sequence, because in this case the
+ effect of mbstate is undefined. */
+ ps = ps_back;
+ return 1;
+ }
+ else if (ret == (size_t)-1)
+ {
+ /* Invalid byte sequence for the current locale. Treat first byte
+ as a single character. */
+ incoming[0] = pending_bytes[0];
+ incoming[1] = '\0';
+ incoming_length = 1;
+ pending_bytes_length--;
+ memmove (pending_bytes, pending_bytes + 1, pending_bytes_length);
+ /* Clear the state of the byte sequence, because in this case the
+ effect of mbstate is undefined. */
+ memset (&ps, 0, sizeof (mbstate_t));
+ }
+ else if (ret == (size_t)0)
+ {
+ incoming[0] = '\0';
+ incoming_length = 0;
+ pending_bytes_length--;
+ /* Clear the state of the byte sequence, because in this case the
+ effect of mbstate is undefined. */
+ memset (&ps, 0, sizeof (mbstate_t));
+ }
+ else
+ {
+ /* We successfully read a single multibyte character. */
+ memcpy (incoming, pending_bytes, pending_bytes_length);
+ incoming[pending_bytes_length] = '\0';
+ incoming_length = pending_bytes_length;
+ pending_bytes_length = 0;
+ }
+ }
+#endif /* HANDLE_MULTIBYTE */
+
+ /* If we can optimize, then do it. But don't let people crash
+ readline because of extra large arguments. */
+ if (count > 1 && count <= 1024)
+ {
+#if defined (HANDLE_MULTIBYTE)
+ string_size = count * incoming_length;
+ string = (char *)xmalloc (1 + string_size);
+
+ i = 0;
+ while (i < string_size)
+ {
+ strncpy (string + i, incoming, incoming_length);
+ i += incoming_length;
+ }
+ incoming_length = 0;
+ stored_count = 0;
+#else /* !HANDLE_MULTIBYTE */
+ string = (char *)xmalloc (1 + count);
+
+ for (i = 0; i < count; i++)
+ string[i] = c;
+#endif /* !HANDLE_MULTIBYTE */
+
+ string[i] = '\0';
+ rl_insert_text (string);
+ free (string);
+
+ return 0;
+ }
+
+ if (count > 1024)
+ {
+ int decreaser;
+#if defined (HANDLE_MULTIBYTE)
+ string_size = incoming_length * 1024;
+ string = (char *)xmalloc (1 + string_size);
+
+ i = 0;
+ while (i < string_size)
+ {
+ strncpy (string + i, incoming, incoming_length);
+ i += incoming_length;
+ }
+
+ while (count)
+ {
+ decreaser = (count > 1024) ? 1024 : count;
+ string[decreaser*incoming_length] = '\0';
+ rl_insert_text (string);
+ count -= decreaser;
+ }
+
+ free (string);
+ incoming_length = 0;
+ stored_count = 0;
+#else /* !HANDLE_MULTIBYTE */
+ char str[1024+1];
+
+ for (i = 0; i < 1024; i++)
+ str[i] = c;
+
+ while (count)
+ {
+ decreaser = (count > 1024 ? 1024 : count);
+ str[decreaser] = '\0';
+ rl_insert_text (str);
+ count -= decreaser;
+ }
+#endif /* !HANDLE_MULTIBYTE */
+
+ return 0;
+ }
+
+ if (MB_CUR_MAX == 1 || rl_byte_oriented)
+ {
+ /* 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 (_rl_any_typein ())
+ _rl_insert_typein (c);
+ else
+ {
+ /* Inserting a single character. */
+ char str[2];
+
+ str[1] = '\0';
+ str[0] = c;
+ rl_insert_text (str);
+ }
+ }
+#if defined (HANDLE_MULTIBYTE)
+ else
+ {
+ rl_insert_text (incoming);
+ stored_count = 0;
+ }
+#endif
+
+ return 0;
+}
+
+/* Overwrite the character at point (or next COUNT characters) with C.
+ If C introduces a multibyte character sequence, read the entire sequence
+ before starting the overwrite loop. */
+int
+_rl_overwrite_char (count, c)
+ int count, c;
+{
+ int i;
+#if defined (HANDLE_MULTIBYTE)
+ char mbkey[MB_LEN_MAX];
+ int k;
+
+ /* Read an entire multibyte character sequence to insert COUNT times. */
+ if (count > 0 && MB_CUR_MAX > 1 && rl_byte_oriented == 0)
+ k = _rl_read_mbstring (c, mbkey, MB_LEN_MAX);
+#endif
+
+ rl_begin_undo_group ();
+
+ for (i = 0; i < count; i++)
+ {
+#if defined (HANDLE_MULTIBYTE)
+ if (MB_CUR_MAX > 1 && rl_byte_oriented == 0)
+ rl_insert_text (mbkey);
+ else
+#endif
+ _rl_insert_char (1, c);
+
+ if (rl_point < rl_end)
+ rl_delete (1, c);
+ }
+
+ rl_end_undo_group ();
+
+ return 0;
+}
+
+int
+rl_insert (count, c)
+ int count, c;
+{
+ return (rl_insert_mode == RL_IM_INSERT ? _rl_insert_char (count, c)
+ : _rl_overwrite_char (count, c));
+}
+
+/* Insert the next typed character verbatim. */
+static int
+_rl_insert_next (count)
+ int count;
+{
+ int c;
+
+ RL_SETSTATE(RL_STATE_MOREINPUT);
+ c = rl_read_key ();
+ RL_UNSETSTATE(RL_STATE_MOREINPUT);
+
+#if defined (HANDLE_SIGNALS)
+ if (RL_ISSTATE (RL_STATE_CALLBACK) == 0)
+ _rl_restore_tty_signals ();
+#endif
+
+ return (_rl_insert_char (count, c));
+}
+
+#if defined (READLINE_CALLBACKS)
+static int
+_rl_insert_next_callback (data)
+ _rl_callback_generic_arg *data;
+{
+ int count;
+
+ count = data->count;
+
+ /* Deregister function, let rl_callback_read_char deallocate data */
+ _rl_callback_func = 0;
+ _rl_want_redisplay = 1;
+
+ return _rl_insert_next (count);
+}
+#endif
+
+int
+rl_quoted_insert (count, key)
+ int count, key;
+{
+ /* Let's see...should the callback interface futz with signal handling? */
+#if defined (HANDLE_SIGNALS)
+ if (RL_ISSTATE (RL_STATE_CALLBACK) == 0)
+ _rl_disable_tty_signals ();
+#endif
+
+#if defined (READLINE_CALLBACKS)
+ if (RL_ISSTATE (RL_STATE_CALLBACK))
+ {
+ _rl_callback_data = _rl_callback_data_alloc (count);
+ _rl_callback_func = _rl_insert_next_callback;
+ return (0);
+ }
+#endif
+
+ return _rl_insert_next (count);
+}
+
+/* Insert a tab character. */
+int
+rl_tab_insert (count, key)
+ int count, key;
+{
+ return (_rl_insert_char (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. */
+int
+rl_newline (count, key)
+ int count, key;
+{
+ rl_done = 1;
+
+ if (_rl_history_preserve_point)
+ _rl_history_saved_point = (rl_point == rl_end) ? -1 : rl_point;
+
+ RL_SETSTATE(RL_STATE_DONE);
+
+#if defined (VI_MODE)
+ if (rl_editing_mode == vi_mode)
+ {
+ _rl_vi_done_inserting ();
+ if (_rl_vi_textmod_command (_rl_vi_last_command) == 0) /* XXX */
+ _rl_vi_reset_last ();
+ }
+#endif /* VI_MODE */
+
+ /* If we've been asked to erase empty lines, suppress the final update,
+ since _rl_update_final calls rl_crlf(). */
+ if (rl_erase_empty_line && rl_point == 0 && rl_end == 0)
+ return 0;
+
+ if (readline_echoing_p)
+ _rl_update_final ();
+ return 0;
+}
+
+/* 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. */
+int
+rl_do_lowercase_version (ignore1, ignore2)
+ int ignore1, ignore2;
+{
+ return 0;
+}
+
+/* This is different from what vi does, so the code's not shared. Emacs
+ rubout in overwrite mode has one oddity: it replaces a control
+ character that's displayed as two characters (^X) with two spaces. */
+int
+_rl_overwrite_rubout (count, key)
+ int count, key;
+{
+ int opoint;
+ int i, l;
+
+ if (rl_point == 0)
+ {
+ rl_ding ();
+ return 1;
+ }
+
+ opoint = rl_point;
+
+ /* L == number of spaces to insert */
+ for (i = l = 0; i < count; i++)
+ {
+ rl_backward_char (1, key);
+ l += rl_character_len (rl_line_buffer[rl_point], rl_point); /* not exactly right */
+ }
+
+ rl_begin_undo_group ();
+
+ if (count > 1 || rl_explicit_arg)
+ rl_kill_text (opoint, rl_point);
+ else
+ rl_delete_text (opoint, rl_point);
+
+ /* Emacs puts point at the beginning of the sequence of spaces. */
+ if (rl_point < rl_end)
+ {
+ opoint = rl_point;
+ _rl_insert_char (l, ' ');
+ rl_point = opoint;
+ }
+
+ rl_end_undo_group ();
+
+ return 0;
+}
+
+/* Rubout the character behind point. */
+int
+rl_rubout (count, key)
+ int count, key;
+{
+ if (count < 0)
+ return (rl_delete (-count, key));
+
+ if (!rl_point)
+ {
+ rl_ding ();
+ return -1;
+ }
+
+ if (rl_insert_mode == RL_IM_OVERWRITE)
+ return (_rl_overwrite_rubout (count, key));
+
+ return (_rl_rubout_char (count, key));
+}
+
+int
+_rl_rubout_char (count, key)
+ int count, key;
+{
+ int orig_point;
+ unsigned char c;
+
+ /* Duplicated code because this is called from other parts of the library. */
+ if (count < 0)
+ return (rl_delete (-count, key));
+
+ if (rl_point == 0)
+ {
+ rl_ding ();
+ return -1;
+ }
+
+ orig_point = rl_point;
+ if (count > 1 || rl_explicit_arg)
+ {
+ rl_backward_char (count, key);
+ rl_kill_text (orig_point, rl_point);
+ }
+ else if (MB_CUR_MAX == 1 || rl_byte_oriented)
+ {
+ c = rl_line_buffer[--rl_point];
+ rl_delete_text (rl_point, orig_point);
+ /* The erase-at-end-of-line hack is of questionable merit now. */
+ 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);
+ }
+ }
+ else
+ {
+ rl_point = _rl_find_prev_mbchar (rl_line_buffer, rl_point, MB_FIND_NONZERO);
+ rl_delete_text (rl_point, orig_point);
+ }
+
+ return 0;
+}
+
+/* Delete the character under the cursor. Given a numeric argument,
+ kill that many characters instead. */
+int
+rl_delete (count, key)
+ int count, key;
+{
+ int xpoint;
+
+ if (count < 0)
+ return (_rl_rubout_char (-count, key));
+
+ if (rl_point == rl_end)
+ {
+ rl_ding ();
+ return -1;
+ }
+
+ if (count > 1 || rl_explicit_arg)
+ {
+ xpoint = rl_point;
+ if (MB_CUR_MAX > 1 && rl_byte_oriented == 0)
+ rl_forward_char (count, key);
+ else
+ rl_forward_byte (count, key);
+
+ rl_kill_text (xpoint, rl_point);
+ rl_point = xpoint;
+ }
+ else
+ {
+ xpoint = MB_NEXTCHAR (rl_line_buffer, rl_point, 1, MB_FIND_NONZERO);
+ rl_delete_text (rl_point, xpoint);
+ }
+ return 0;
+}
+
+/* Delete the character under the cursor, unless the insertion
+ point is at the end of the line, in which case the character
+ behind the cursor is deleted. COUNT is obeyed and may be used
+ to delete forward or backward that many characters. */
+int
+rl_rubout_or_delete (count, key)
+ int count, key;
+{
+ if (rl_end != 0 && rl_point == rl_end)
+ return (_rl_rubout_char (count, key));
+ else
+ return (rl_delete (count, key));
+}
+
+/* Delete all spaces and tabs around point. */
+int
+rl_delete_horizontal_space (count, ignore)
+ int count, ignore;
+{
+ int start = rl_point;
+
+ while (rl_point && whitespace (rl_line_buffer[rl_point - 1]))
+ rl_point--;
+
+ start = rl_point;
+
+ while (rl_point < rl_end && whitespace (rl_line_buffer[rl_point]))
+ rl_point++;
+
+ if (start != rl_point)
+ {
+ rl_delete_text (start, rl_point);
+ rl_point = start;
+ }
+
+ if (rl_point < 0)
+ rl_point = 0;
+
+ return 0;
+}
+
+/* Like the tcsh editing function delete-char-or-list. The eof character
+ is caught before this is invoked, so this really does the same thing as
+ delete-char-or-list-or-eof, as long as it's bound to the eof character. */
+int
+rl_delete_or_show_completions (count, key)
+ int count, key;
+{
+ if (rl_end != 0 && rl_point == rl_end)
+ return (rl_possible_completions (count, key));
+ else
+ return (rl_delete (count, key));
+}
+
+#ifndef RL_COMMENT_BEGIN_DEFAULT
+#define RL_COMMENT_BEGIN_DEFAULT "#"
+#endif
+
+/* Turn the current line into a comment in shell history.
+ A K*rn shell style function. */
+int
+rl_insert_comment (count, key)
+ int count, key;
+{
+ char *rl_comment_text;
+ int rl_comment_len;
+
+ rl_beg_of_line (1, key);
+ rl_comment_text = _rl_comment_begin ? _rl_comment_begin : RL_COMMENT_BEGIN_DEFAULT;
+
+ if (rl_explicit_arg == 0)
+ rl_insert_text (rl_comment_text);
+ else
+ {
+ rl_comment_len = strlen (rl_comment_text);
+ if (STREQN (rl_comment_text, rl_line_buffer, rl_comment_len))
+ rl_delete_text (rl_point, rl_point + rl_comment_len);
+ else
+ rl_insert_text (rl_comment_text);
+ }
+
+ (*rl_redisplay_function) ();
+ rl_newline (1, '\n');
+
+ return (0);
+}
+
+/* **************************************************************** */
+/* */
+/* 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. */
+int
+rl_upcase_word (count, key)
+ int count, key;
+{
+ return (rl_change_case (count, UpCase));
+}
+
+/* Lowercase the word at point. */
+int
+rl_downcase_word (count, key)
+ int count, key;
+{
+ return (rl_change_case (count, DownCase));
+}
+
+/* Upcase the first letter, downcase the rest. */
+int
+rl_capitalize_word (count, key)
+ int count, key;
+{
+ return (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. */
+static int
+rl_change_case (count, op)
+ int count, op;
+{
+ int start, next, end;
+ int inword, c, nc, nop;
+#if defined (HANDLE_MULTIBYTE)
+ wchar_t wc, nwc;
+ char mb[MB_LEN_MAX+1];
+ int mlen;
+ mbstate_t mps;
+#endif
+
+ start = rl_point;
+ rl_forward_word (count, 0);
+ end = rl_point;
+
+ if (op != UpCase && op != DownCase && op != CapCase)
+ {
+ rl_ding ();
+ return -1;
+ }
+
+ if (count < 0)
+ SWAP (start, end);
+
+#if defined (HANDLE_MULTIBYTE)
+ memset (&mps, 0, sizeof (mbstate_t));
+#endif
+
+ /* We are going to modify some text, so let's prepare to undo it. */
+ rl_modifying (start, end);
+
+ inword = 0;
+ while (start < end)
+ {
+ c = _rl_char_value (rl_line_buffer, start);
+ /* This assumes that the upper and lower case versions are the same width. */
+ next = MB_NEXTCHAR (rl_line_buffer, start, 1, MB_FIND_NONZERO);
+
+ if (_rl_walphabetic (c) == 0)
+ {
+ inword = 0;
+ start = next;
+ continue;
+ }
+
+ if (op == CapCase)
+ {
+ nop = inword ? DownCase : UpCase;
+ inword = 1;
+ }
+ else
+ nop = op;
+ if (MB_CUR_MAX == 1 || rl_byte_oriented || isascii (c))
+ {
+ nc = (nop == UpCase) ? _rl_to_upper (c) : _rl_to_lower (c);
+ rl_line_buffer[start] = nc;
+ }
+#if defined (HANDLE_MULTIBYTE)
+ else
+ {
+ mbrtowc (&wc, rl_line_buffer + start, end - start, &mps);
+ nwc = (nop == UpCase) ? _rl_to_wupper (wc) : _rl_to_wlower (wc);
+ if (nwc != wc) /* just skip unchanged characters */
+ {
+ mlen = wcrtomb (mb, nwc, &mps);
+ if (mlen > 0)
+ mb[mlen] = '\0';
+ /* Assume the same width */
+ strncpy (rl_line_buffer + start, mb, mlen);
+ }
+ }
+#endif
+
+ start = next;
+ }
+
+ rl_point = end;
+ return 0;
+}
+
+/* **************************************************************** */
+/* */
+/* Transposition */
+/* */
+/* **************************************************************** */
+
+/* Transpose the words at point. If point is at the end of the line,
+ transpose the two words before point. */
+int
+rl_transpose_words (count, key)
+ int count, key;
+{
+ char *word1, *word2;
+ int w1_beg, w1_end, w2_beg, w2_end;
+ int orig_point = rl_point;
+
+ if (!count)
+ return 0;
+
+ /* Find the two words. */
+ rl_forward_word (count, key);
+ w2_end = rl_point;
+ rl_backward_word (1, key);
+ w2_beg = rl_point;
+ rl_backward_word (count, key);
+ w1_beg = rl_point;
+ rl_forward_word (1, key);
+ 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))
+ {
+ rl_ding ();
+ rl_point = orig_point;
+ return -1;
+ }
+
+ /* 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);
+
+ return 0;
+}
+
+/* Transpose the characters at point. If point is at the end of the line,
+ then transpose the characters before point. */
+int
+rl_transpose_chars (count, key)
+ int count, key;
+{
+#if defined (HANDLE_MULTIBYTE)
+ char *dummy;
+ int i;
+#else
+ char dummy[2];
+#endif
+ int char_length, prev_point;
+
+ if (count == 0)
+ return 0;
+
+ if (!rl_point || rl_end < 2)
+ {
+ rl_ding ();
+ return -1;
+ }
+
+ rl_begin_undo_group ();
+
+ if (rl_point == rl_end)
+ {
+ rl_point = MB_PREVCHAR (rl_line_buffer, rl_point, MB_FIND_NONZERO);
+ count = 1;
+ }
+
+ prev_point = rl_point;
+ rl_point = MB_PREVCHAR (rl_line_buffer, rl_point, MB_FIND_NONZERO);
+
+#if defined (HANDLE_MULTIBYTE)
+ char_length = prev_point - rl_point;
+ dummy = (char *)xmalloc (char_length + 1);
+ for (i = 0; i < char_length; i++)
+ dummy[i] = rl_line_buffer[rl_point + i];
+ dummy[i] = '\0';
+#else
+ dummy[0] = rl_line_buffer[rl_point];
+ dummy[char_length = 1] = '\0';
+#endif
+
+ rl_delete_text (rl_point, rl_point + char_length);
+
+ rl_point = _rl_find_next_mbchar (rl_line_buffer, rl_point, count, MB_FIND_NONZERO);
+
+ _rl_fix_point (0);
+ rl_insert_text (dummy);
+ rl_end_undo_group ();
+
+#if defined (HANDLE_MULTIBYTE)
+ free (dummy);
+#endif
+
+ return 0;
+}
+
+/* **************************************************************** */
+/* */
+/* Character Searching */
+/* */
+/* **************************************************************** */
+
+int
+#if defined (HANDLE_MULTIBYTE)
+_rl_char_search_internal (count, dir, smbchar, len)
+ int count, dir;
+ char *smbchar;
+ int len;
+#else
+_rl_char_search_internal (count, dir, schar)
+ int count, dir, schar;
+#endif
+{
+ int pos, inc;
+#if defined (HANDLE_MULTIBYTE)
+ int prepos;
+#endif
+
+ pos = rl_point;
+ inc = (dir < 0) ? -1 : 1;
+ while (count)
+ {
+ if ((dir < 0 && pos <= 0) || (dir > 0 && pos >= rl_end))
+ {
+ rl_ding ();
+ return -1;
+ }
+
+#if defined (HANDLE_MULTIBYTE)
+ pos = (inc > 0) ? _rl_find_next_mbchar (rl_line_buffer, pos, 1, MB_FIND_ANY)
+ : _rl_find_prev_mbchar (rl_line_buffer, pos, MB_FIND_ANY);
+#else
+ pos += inc;
+#endif
+ do
+ {
+#if defined (HANDLE_MULTIBYTE)
+ if (_rl_is_mbchar_matched (rl_line_buffer, pos, rl_end, smbchar, len))
+#else
+ if (rl_line_buffer[pos] == schar)
+#endif
+ {
+ count--;
+ if (dir < 0)
+ rl_point = (dir == BTO) ? _rl_find_next_mbchar (rl_line_buffer, pos, 1, MB_FIND_ANY)
+ : pos;
+ else
+ rl_point = (dir == FTO) ? _rl_find_prev_mbchar (rl_line_buffer, pos, MB_FIND_ANY)
+ : pos;
+ break;
+ }
+#if defined (HANDLE_MULTIBYTE)
+ prepos = pos;
+#endif
+ }
+#if defined (HANDLE_MULTIBYTE)
+ while ((dir < 0) ? (pos = _rl_find_prev_mbchar (rl_line_buffer, pos, MB_FIND_ANY)) != prepos
+ : (pos = _rl_find_next_mbchar (rl_line_buffer, pos, 1, MB_FIND_ANY)) != prepos);
+#else
+ while ((dir < 0) ? pos-- : ++pos < rl_end);
+#endif
+ }
+ return (0);
+}
+
+/* Search COUNT times for a character read from the current input stream.
+ FDIR is the direction to search if COUNT is non-negative; otherwise
+ the search goes in BDIR. So much is dependent on HANDLE_MULTIBYTE
+ that there are two separate versions of this function. */
+#if defined (HANDLE_MULTIBYTE)
+static int
+_rl_char_search (count, fdir, bdir)
+ int count, fdir, bdir;
+{
+ char mbchar[MB_LEN_MAX];
+ int mb_len;
+
+ mb_len = _rl_read_mbchar (mbchar, MB_LEN_MAX);
+
+ if (count < 0)
+ return (_rl_char_search_internal (-count, bdir, mbchar, mb_len));
+ else
+ return (_rl_char_search_internal (count, fdir, mbchar, mb_len));
+}
+#else /* !HANDLE_MULTIBYTE */
+static int
+_rl_char_search (count, fdir, bdir)
+ int count, fdir, bdir;
+{
+ int c;
+
+ RL_SETSTATE(RL_STATE_MOREINPUT);
+ c = rl_read_key ();
+ RL_UNSETSTATE(RL_STATE_MOREINPUT);
+
+ if (count < 0)
+ return (_rl_char_search_internal (-count, bdir, c));
+ else
+ return (_rl_char_search_internal (count, fdir, c));
+}
+#endif /* !HANDLE_MULTIBYTE */
+
+#if defined (READLINE_CALLBACKS)
+static int
+_rl_char_search_callback (data)
+ _rl_callback_generic_arg *data;
+{
+ _rl_callback_func = 0;
+ _rl_want_redisplay = 1;
+
+ return (_rl_char_search (data->count, data->i1, data->i2));
+}
+#endif
+
+int
+rl_char_search (count, key)
+ int count, key;
+{
+#if defined (READLINE_CALLBACKS)
+ if (RL_ISSTATE (RL_STATE_CALLBACK))
+ {
+ _rl_callback_data = _rl_callback_data_alloc (count);
+ _rl_callback_data->i1 = FFIND;
+ _rl_callback_data->i2 = BFIND;
+ _rl_callback_func = _rl_char_search_callback;
+ return (0);
+ }
+#endif
+
+ return (_rl_char_search (count, FFIND, BFIND));
+}
+
+int
+rl_backward_char_search (count, key)
+ int count, key;
+{
+#if defined (READLINE_CALLBACKS)
+ if (RL_ISSTATE (RL_STATE_CALLBACK))
+ {
+ _rl_callback_data = _rl_callback_data_alloc (count);
+ _rl_callback_data->i1 = BFIND;
+ _rl_callback_data->i2 = FFIND;
+ _rl_callback_func = _rl_char_search_callback;
+ return (0);
+ }
+#endif
+
+ return (_rl_char_search (count, BFIND, FFIND));
+}
+
+/* **************************************************************** */
+/* */
+/* The Mark and the Region. */
+/* */
+/* **************************************************************** */
+
+/* Set the mark at POSITION. */
+int
+_rl_set_mark_at_pos (position)
+ int position;
+{
+ if (position > rl_end)
+ return -1;
+
+ rl_mark = position;
+ return 0;
+}
+
+/* A bindable command to set the mark. */
+int
+rl_set_mark (count, key)
+ int count, key;
+{
+ return (_rl_set_mark_at_pos (rl_explicit_arg ? count : rl_point));
+}
+
+/* Exchange the position of mark and point. */
+int
+rl_exchange_point_and_mark (count, key)
+ int count, key;
+{
+ if (rl_mark > rl_end)
+ rl_mark = -1;
+
+ if (rl_mark == -1)
+ {
+ rl_ding ();
+ return -1;
+ }
+ else
+ SWAP (rl_point, rl_mark);
+
+ return 0;
+}
projects / thirdparty / bash.git / commitdiff
