/* display.c -- readline redisplay facility. */
-/* Copyright (C) 1987, 1989, 1992 Free Software Foundation, Inc.
+/* 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 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
#if defined (HAVE_CONFIG_H)
#include <stdio.h>
-#if defined (__GO32__)
-# include <go32.h>
-# include <pc.h>
-#endif /* __GO32__ */
+#ifdef __MSDOS__
+# include <pc.h>
+#endif
/* System-specific feature definitions and include files. */
#include "rldefs.h"
+#include "rlmbutil.h"
/* Termcap library stuff. */
#include "tcap.h"
#include "readline.h"
#include "history.h"
+#include "rlprivate.h"
+#include "xmalloc.h"
+
#if !defined (strchr) && !defined (__STDC__)
extern char *strchr (), *strrchr ();
#endif /* !strchr && !__STDC__ */
-/* Global and pseudo-global variables and functions
- imported from readline.c. */
-extern char *rl_prompt;
-extern int readline_echoing_p;
+#if defined (HACK_TERMCAP_MOTION)
+extern char *_rl_term_forward_char;
+#endif
-extern int _rl_output_meta_chars;
-extern int _rl_horizontal_scroll_mode;
-extern int _rl_mark_modified_lines;
-extern int _rl_prefer_visible_bell;
+static void update_line PARAMS((char *, char *, int, int, int, int));
+static void space_to_eol PARAMS((int));
+static void delete_chars PARAMS((int));
+static void insert_some_chars PARAMS((char *, int, int));
+static void cr PARAMS((void));
-/* Variables and functions imported from terminal.c */
-extern void _rl_output_some_chars ();
-#ifdef _MINIX
-extern void _rl_output_character_function ();
+#if defined (HANDLE_MULTIBYTE)
+static int _rl_col_width PARAMS((const char *, int, int));
+static int *_rl_wrapped_line;
#else
-extern int _rl_output_character_function ();
+# define _rl_col_width(l, s, e) (((e) <= (s)) ? 0 : (e) - (s))
#endif
-extern int _rl_backspace ();
-
-extern char *term_clreol, *term_clrpag;
-extern char *term_im, *term_ic, *term_ei, *term_DC;
-extern char *term_up, *term_dc, *term_cr, *term_IC;
-extern int screenheight, screenwidth, screenchars;
-extern int terminal_can_insert, _rl_term_autowrap;
-
-/* Pseudo-global functions (local to the readline library) exported
- by this file. */
-void _rl_move_cursor_relative (), _rl_output_some_chars ();
-void _rl_move_vert ();
-void _rl_clear_to_eol (), _rl_clear_screen ();
-
-static void update_line (), space_to_eol ();
-static void delete_chars (), insert_some_chars ();
-static void cr ();
static int *inv_lbreaks, *vis_lbreaks;
-
-extern char *xmalloc (), *xrealloc ();
+static int inv_lbsize, vis_lbsize;
/* Heuristic used to decide whether it is faster to move from CUR to NEW
by backing up or outputting a carriage return and moving forward. */
RL_DISPLAY_FIXED variable. This is good for efficiency. */
/* Application-specific redisplay function. */
-VFunction *rl_redisplay_function = rl_redisplay;
+rl_voidfunc_t *rl_redisplay_function = rl_redisplay;
/* Global variables declared here. */
/* What YOU turn on when you have handled all redisplay yourself. */
int rl_display_fixed = 0;
int _rl_suppress_redisplay = 0;
+int _rl_want_redisplay = 0;
/* The stuff that gets printed out before the actual text of the line.
This is usually pointing to rl_prompt. */
char *rl_display_prompt = (char *)NULL;
/* Pseudo-global variables declared here. */
+
/* The visible cursor position. If you print some text, adjust this. */
+/* NOTE: _rl_last_c_pos is used as a buffer index when not in a locale
+ supporting multibyte characters, and an absolute cursor position when
+ in such a locale. This is an artifact of the donated multibyte support.
+ Care must be taken when modifying its value. */
int _rl_last_c_pos = 0;
int _rl_last_v_pos = 0;
+static int cpos_adjusted;
+
/* Number of lines currently on screen minus 1. */
int _rl_vis_botlin = 0;
/* Default and initial buffer size. Can grow. */
static int line_size = 1024;
+/* Variables to keep track of the expanded prompt string, which may
+ include invisible characters. */
+
static char *local_prompt, *local_prompt_prefix;
-static int visible_length, prefix_length;
+static int prompt_visible_length, prompt_prefix_length;
/* The number of invisible characters in the line currently being
displayed on the screen. */
static int visible_wrap_offset;
-/* static so it can be shared between rl_redisplay and update_line */
+/* The number of invisible characters in the prompt string. Static so it
+ can be shared between rl_redisplay and update_line */
static int wrap_offset;
-/* The index of the last invisible_character in the prompt string. */
-static int last_invisible;
+/* The index of the last invisible character in the prompt string. */
+static int prompt_last_invisible;
/* The length (buffer offset) of the first line of the last (possibly
multi-line) buffer displayed on the screen. */
static int visible_first_line_len;
+/* Number of invisible characters on the first physical line of the prompt.
+ Only valid when the number of physical characters in the prompt exceeds
+ (or is equal to) _rl_screenwidth. */
+static int prompt_invis_chars_first_line;
+
+static int prompt_last_screen_line;
+
+static int prompt_physical_chars;
+
+/* Variables to save and restore prompt and display information. */
+
+/* These are getting numerous enough that it's time to create a struct. */
+
+static char *saved_local_prompt;
+static char *saved_local_prefix;
+static int saved_last_invisible;
+static int saved_visible_length;
+static int saved_prefix_length;
+static int saved_invis_chars_first_line;
+static int saved_physical_chars;
+
/* Expand the prompt string S and return the number of visible
characters in *LP, if LP is not null. This is currently more-or-less
a placeholder for expansion. LIP, if non-null is a place to store the
- index of the last invisible character in ther eturned string. */
+ index of the last invisible character in the returned string. NIFLP,
+ if non-zero, is a place to store the number of invisible characters in
+ the first prompt line. The previous are used as byte counts -- indexes
+ into a character buffer. */
/* Current implementation:
\001 (^A) start non-visible characters
\002 are assumed to be `visible'. */
static char *
-expand_prompt (pmt, lp, lip)
+expand_prompt (pmt, lp, lip, niflp, vlp)
char *pmt;
- int *lp, *lip;
+ int *lp, *lip, *niflp, *vlp;
{
char *r, *ret, *p;
- int l, rl, last, ignoring;
+ int l, rl, last, ignoring, ninvis, invfl, invflset, ind, pind, physchars;
/* Short-circuit if we can. */
- if (strchr (pmt, RL_PROMPT_START_IGNORE) == 0)
+ if ((MB_CUR_MAX <= 1 || rl_byte_oriented) && strchr (pmt, RL_PROMPT_START_IGNORE) == 0)
{
r = savestring (pmt);
if (lp)
*lp = strlen (r);
+ if (lip)
+ *lip = 0;
+ if (niflp)
+ *niflp = 0;
+ if (vlp)
+ *vlp = lp ? *lp : strlen (r);
return r;
}
l = strlen (pmt);
- r = ret = xmalloc (l + 1);
-
- for (rl = ignoring = last = 0, p = pmt; p && *p; p++)
+ r = ret = (char *)xmalloc (l + 1);
+
+ invfl = 0; /* invisible chars in first line of prompt */
+ invflset = 0; /* we only want to set invfl once */
+
+ for (rl = ignoring = last = ninvis = physchars = 0, p = pmt; p && *p; p++)
{
/* This code strips the invisible character string markers
RL_PROMPT_START_IGNORE and RL_PROMPT_END_IGNORE */
else if (ignoring && *p == RL_PROMPT_END_IGNORE)
{
ignoring = 0;
- last = r - ret - 1;
+ if (p[-1] != RL_PROMPT_START_IGNORE)
+ last = r - ret - 1;
continue;
}
else
{
- *r++ = *p;
- if (!ignoring)
- rl++;
+#if defined (HANDLE_MULTIBYTE)
+ if (MB_CUR_MAX > 1 && rl_byte_oriented == 0)
+ {
+ pind = p - pmt;
+ ind = _rl_find_next_mbchar (pmt, pind, 1, MB_FIND_NONZERO);
+ l = ind - pind;
+ while (l--)
+ *r++ = *p++;
+ if (!ignoring)
+ {
+ rl += ind - pind;
+ physchars += _rl_col_width (pmt, pind, ind);
+ }
+ else
+ ninvis += ind - pind;
+ p--; /* compensate for later increment */
+ }
+ else
+#endif
+ {
+ *r++ = *p;
+ if (!ignoring)
+ {
+ rl++; /* visible length byte counter */
+ physchars++;
+ }
+ else
+ ninvis++; /* invisible chars byte counter */
+ }
+
+ if (invflset == 0 && rl >= _rl_screenwidth)
+ {
+ invfl = ninvis;
+ invflset = 1;
+ }
}
}
+ if (rl < _rl_screenwidth)
+ invfl = ninvis;
+
*r = '\0';
if (lp)
*lp = rl;
if (lip)
*lip = last;
+ if (niflp)
+ *niflp = invfl;
+ if (vlp)
+ *vlp = physchars;
+ return ret;
+}
+
+/* Just strip out RL_PROMPT_START_IGNORE and RL_PROMPT_END_IGNORE from
+ PMT and return the rest of PMT. */
+char *
+_rl_strip_prompt (pmt)
+ char *pmt;
+{
+ char *ret;
+
+ ret = expand_prompt (pmt, (int *)NULL, (int *)NULL, (int *)NULL, (int *)NULL);
return ret;
}
* (portion after the final newline)
* local_prompt_prefix = portion before last newline of rl_display_prompt,
* expanded via expand_prompt
- * visible_length = number of visible characters in local_prompt
- * prefix_length = number of visible characters in local_prompt_prefix
+ * prompt_visible_length = number of visible characters in local_prompt
+ * prompt_prefix_length = number of visible characters in local_prompt_prefix
*
* This function is called once per call to readline(). It may also be
* called arbitrarily to expand the primary prompt.
int c;
/* Clear out any saved values. */
- if (local_prompt)
- free (local_prompt);
- if (local_prompt_prefix)
- free (local_prompt_prefix);
+ FREE (local_prompt);
+ FREE (local_prompt_prefix);
+
local_prompt = local_prompt_prefix = (char *)0;
- last_invisible = 0;
+ prompt_last_invisible = prompt_invis_chars_first_line = 0;
+ prompt_visible_length = prompt_physical_chars = 0;
if (prompt == 0 || *prompt == 0)
return (0);
p = strrchr (prompt, '\n');
if (!p)
{
- /* The prompt is only one line. */
- local_prompt = expand_prompt (prompt, &visible_length, &last_invisible);
+ /* The prompt is only one logical line, though it might wrap. */
+ local_prompt = expand_prompt (prompt, &prompt_visible_length,
+ &prompt_last_invisible,
+ &prompt_invis_chars_first_line,
+ &prompt_physical_chars);
local_prompt_prefix = (char *)0;
- return (visible_length);
+ return (prompt_visible_length);
}
else
{
/* The prompt spans multiple lines. */
t = ++p;
- local_prompt = expand_prompt (p, &visible_length, &last_invisible);
+ local_prompt = expand_prompt (p, &prompt_visible_length,
+ &prompt_last_invisible,
+ (int *)NULL,
+ &prompt_physical_chars);
c = *t; *t = '\0';
/* The portion of the prompt string up to and including the
final newline is now null-terminated. */
- local_prompt_prefix = expand_prompt (prompt, &prefix_length, (int *)NULL);
+ local_prompt_prefix = expand_prompt (prompt, &prompt_prefix_length,
+ (int *)NULL,
+ &prompt_invis_chars_first_line,
+ (int *)NULL);
*t = c;
- return (prefix_length);
+ return (prompt_prefix_length);
}
}
+/* Initialize the VISIBLE_LINE and INVISIBLE_LINE arrays, and their associated
+ arrays of line break markers. MINSIZE is the minimum size of VISIBLE_LINE
+ and INVISIBLE_LINE; if it is greater than LINE_SIZE, LINE_SIZE is
+ increased. If the lines have already been allocated, this ensures that
+ they can hold at least MINSIZE characters. */
+static void
+init_line_structures (minsize)
+ int minsize;
+{
+ register int n;
+
+ if (invisible_line == 0) /* initialize it */
+ {
+ if (line_size < minsize)
+ line_size = minsize;
+ visible_line = (char *)xmalloc (line_size);
+ invisible_line = (char *)xmalloc (line_size);
+ }
+ else if (line_size < minsize) /* ensure it can hold MINSIZE chars */
+ {
+ line_size *= 2;
+ if (line_size < minsize)
+ line_size = minsize;
+ visible_line = (char *)xrealloc (visible_line, line_size);
+ invisible_line = (char *)xrealloc (invisible_line, line_size);
+ }
+
+ for (n = minsize; n < line_size; n++)
+ {
+ visible_line[n] = 0;
+ invisible_line[n] = 1;
+ }
+
+ if (vis_lbreaks == 0)
+ {
+ /* should be enough. */
+ inv_lbsize = vis_lbsize = 256;
+ inv_lbreaks = (int *)xmalloc (inv_lbsize * sizeof (int));
+ vis_lbreaks = (int *)xmalloc (vis_lbsize * sizeof (int));
+#if defined (HANDLE_MULTIBYTE)
+ _rl_wrapped_line = (int *)xmalloc (vis_lbsize * sizeof (int));
+#endif
+ inv_lbreaks[0] = vis_lbreaks[0] = 0;
+ }
+}
+
/* Basic redisplay algorithm. */
void
rl_redisplay ()
{
register int in, out, c, linenum, cursor_linenum;
register char *line;
- int c_pos, inv_botlin, lb_botlin, lb_linenum;
- int newlines, lpos, temp;
+ int c_pos, inv_botlin, lb_botlin, lb_linenum, o_cpos;
+ int newlines, lpos, temp, modmark, n0, num;
char *prompt_this_line;
+#if defined (HANDLE_MULTIBYTE)
+ wchar_t wc;
+ size_t wc_bytes;
+ int wc_width;
+ mbstate_t ps;
+ int _rl_wrapped_multicolumn = 0;
+#endif
if (!readline_echoing_p)
return;
+ /* Signals are blocked through this function as the global data structures
+ could get corrupted upon modifications from an invoked signal handler. */
+ _rl_block_sigint ();
+
if (!rl_display_prompt)
rl_display_prompt = "";
- if (invisible_line == 0)
+ if (invisible_line == 0 || vis_lbreaks == 0)
{
- visible_line = xmalloc (line_size);
- invisible_line = xmalloc (line_size);
- for (in = 0; in < line_size; in++)
- {
- visible_line[in] = 0;
- invisible_line[in] = 1;
- }
-
- /* should be enough, but then again, this is just for testing. */
- inv_lbreaks = (int *)malloc (256 * sizeof (int));
- vis_lbreaks = (int *)malloc (256 * sizeof (int));
- inv_lbreaks[0] = vis_lbreaks[0] = 0;
-
+ init_line_structures (0);
rl_on_new_line ();
}
/* Mark the line as modified or not. We only do this for history
lines. */
+ modmark = 0;
if (_rl_mark_modified_lines && current_history () && rl_undo_list)
{
line[out++] = '*';
line[out] = '\0';
+ modmark = 1;
}
/* If someone thought that the redisplay was handled, but the currently
if (local_len > 0)
{
+ temp = local_len + out + 2;
+ if (temp >= line_size)
+ {
+ line_size = (temp + 1024) - (temp % 1024);
+ visible_line = (char *)xrealloc (visible_line, line_size);
+ line = invisible_line = (char *)xrealloc (invisible_line, line_size);
+ }
strncpy (line + out, local_prompt, local_len);
out += local_len;
}
line[out] = '\0';
- wrap_offset = local_len - visible_length;
+ wrap_offset = local_len - prompt_visible_length;
}
else
{
else
{
prompt_this_line++;
+ pmtlen = prompt_this_line - rl_display_prompt; /* temp var */
if (forced_display)
{
- _rl_output_some_chars (rl_display_prompt, prompt_this_line - rl_display_prompt);
+ _rl_output_some_chars (rl_display_prompt, pmtlen);
/* Make sure we are at column zero even after a newline,
regardless of the state of terminal output processing. */
- if (prompt_this_line[-2] != '\r')
+ if (pmtlen < 2 || prompt_this_line[-2] != '\r')
cr ();
}
}
- pmtlen = strlen (prompt_this_line);
+ prompt_physical_chars = pmtlen = strlen (prompt_this_line);
+ temp = pmtlen + out + 2;
+ if (temp >= line_size)
+ {
+ line_size = (temp + 1024) - (temp % 1024);
+ visible_line = (char *)xrealloc (visible_line, line_size);
+ line = invisible_line = (char *)xrealloc (invisible_line, line_size);
+ }
strncpy (line + out, prompt_this_line, pmtlen);
out += pmtlen;
line[out] = '\0';
- wrap_offset = 0;
+ wrap_offset = prompt_invis_chars_first_line = 0;
}
+#define CHECK_INV_LBREAKS() \
+ do { \
+ if (newlines >= (inv_lbsize - 2)) \
+ { \
+ inv_lbsize *= 2; \
+ inv_lbreaks = (int *)xrealloc (inv_lbreaks, inv_lbsize * sizeof (int)); \
+ } \
+ } while (0)
+
+#if defined (HANDLE_MULTIBYTE)
#define CHECK_LPOS() \
do { \
- lpos++; \
- if (lpos >= screenwidth) \
- { \
- inv_lbreaks[++newlines] = out; \
- lpos = 0; \
- } \
+ lpos++; \
+ if (lpos >= _rl_screenwidth) \
+ { \
+ if (newlines >= (inv_lbsize - 2)) \
+ { \
+ inv_lbsize *= 2; \
+ inv_lbreaks = (int *)xrealloc (inv_lbreaks, inv_lbsize * sizeof (int)); \
+ _rl_wrapped_line = (int *)xrealloc (_rl_wrapped_line, inv_lbsize * sizeof (int)); \
+ } \
+ inv_lbreaks[++newlines] = out; \
+ _rl_wrapped_line[newlines] = _rl_wrapped_multicolumn; \
+ lpos = 0; \
+ } \
} while (0)
+#else
+#define CHECK_LPOS() \
+ do { \
+ lpos++; \
+ if (lpos >= _rl_screenwidth) \
+ { \
+ if (newlines >= (inv_lbsize - 2)) \
+ { \
+ inv_lbsize *= 2; \
+ inv_lbreaks = (int *)xrealloc (inv_lbreaks, inv_lbsize * sizeof (int)); \
+ } \
+ inv_lbreaks[++newlines] = out; \
+ lpos = 0; \
+ } \
+ } while (0)
+#endif
/* inv_lbreaks[i] is where line i starts in the buffer. */
inv_lbreaks[newlines = 0] = 0;
+#if 0
lpos = out - wrap_offset;
+#else
+ lpos = prompt_physical_chars + modmark;
+#endif
+
+#if defined (HANDLE_MULTIBYTE)
+ memset (_rl_wrapped_line, 0, vis_lbsize);
+ num = 0;
+#endif
+
+ /* prompt_invis_chars_first_line is the number of invisible characters in
+ the first physical line of the prompt.
+ wrap_offset - prompt_invis_chars_first_line is the number of invis
+ chars on the second line. */
- /* XXX - what if lpos is already >= screenwidth before we start drawing the
+ /* what if lpos is already >= _rl_screenwidth before we start drawing the
contents of the command line? */
- while (lpos >= screenwidth)
+ while (lpos >= _rl_screenwidth)
{
-#if 0
- temp = ((newlines + 1) * screenwidth) - ((newlines == 0) ? wrap_offset : 0);
+ /* fix from Darin Johnson <darin@acuson.com> for prompt string with
+ invisible characters that is longer than the screen width. The
+ prompt_invis_chars_first_line variable could be made into an array
+ saying how many invisible characters there are per line, but that's
+ probably too much work for the benefit gained. How many people have
+ prompts that exceed two physical lines?
+ Additional logic fix from Edward Catmur <ed@catmur.co.uk> */
+#if defined (HANDLE_MULTIBYTE)
+ n0 = num;
+ temp = local_prompt ? strlen (local_prompt) : 0;
+ while (num < temp)
+ {
+ if (_rl_col_width (local_prompt, n0, num) > _rl_screenwidth)
+ {
+ num = _rl_find_prev_mbchar (local_prompt, num, MB_FIND_ANY);
+ break;
+ }
+ num++;
+ }
+ temp = num +
#else
- /* XXX - possible fix from Darin Johnson <darin@acuson.com> for prompt
- string with invisible characters that is longer than the screen
- width. */
- temp = ((newlines + 1) * screenwidth) + ((newlines == 0) ? wrap_offset : 0);
-#endif
+ temp = ((newlines + 1) * _rl_screenwidth) +
+#endif /* !HANDLE_MULTIBYTE */
+ ((local_prompt_prefix == 0) ? ((newlines == 0) ? prompt_invis_chars_first_line
+ : ((newlines == 1) ? wrap_offset : 0))
+ : ((newlines == 0) ? wrap_offset :0));
+
inv_lbreaks[++newlines] = temp;
- lpos -= screenwidth;
+#if defined (HANDLE_MULTIBYTE)
+ lpos -= _rl_col_width (local_prompt, n0, num);
+#else
+ lpos -= _rl_screenwidth;
+#endif
}
+ prompt_last_screen_line = newlines;
+
+ /* Draw the rest of the line (after the prompt) into invisible_line, keeping
+ track of where the cursor is (c_pos), the number of the line containing
+ the cursor (lb_linenum), the last line number (lb_botlin and inv_botlin).
+ It maintains an array of line breaks for display (inv_lbreaks).
+ This handles expanding tabs for display and displaying meta characters. */
lb_linenum = 0;
+#if defined (HANDLE_MULTIBYTE)
+ in = 0;
+ if (MB_CUR_MAX > 1 && rl_byte_oriented == 0)
+ {
+ memset (&ps, 0, sizeof (mbstate_t));
+ wc_bytes = mbrtowc (&wc, rl_line_buffer, rl_end, &ps);
+ }
+ else
+ wc_bytes = 1;
+ while (in < rl_end)
+#else
for (in = 0; in < rl_end; in++)
+#endif
{
c = (unsigned char)rl_line_buffer[in];
+#if defined (HANDLE_MULTIBYTE)
+ if (MB_CUR_MAX > 1 && rl_byte_oriented == 0)
+ {
+ if (MB_INVALIDCH (wc_bytes))
+ {
+ /* Byte sequence is invalid or shortened. Assume that the
+ first byte represents a character. */
+ wc_bytes = 1;
+ /* Assume that a character occupies a single column. */
+ wc_width = 1;
+ memset (&ps, 0, sizeof (mbstate_t));
+ }
+ else if (MB_NULLWCH (wc_bytes))
+ break; /* Found '\0' */
+ else
+ {
+ temp = wcwidth (wc);
+ wc_width = (temp >= 0) ? temp : 1;
+ }
+ }
+#endif
+
if (out + 8 >= line_size) /* XXX - 8 for \t */
{
line_size *= 2;
- visible_line = xrealloc (visible_line, line_size);
- invisible_line = xrealloc (invisible_line, line_size);
+ visible_line = (char *)xrealloc (visible_line, line_size);
+ invisible_line = (char *)xrealloc (invisible_line, line_size);
line = invisible_line;
}
lb_linenum = newlines;
}
+#if defined (HANDLE_MULTIBYTE)
+ if (META_CHAR (c) && _rl_output_meta_chars == 0) /* XXX - clean up */
+#else
if (META_CHAR (c))
+#endif
{
if (_rl_output_meta_chars == 0)
{
sprintf (line + out, "\\%o", c);
- if (lpos + 4 >= screenwidth)
+ if (lpos + 4 >= _rl_screenwidth)
{
- temp = screenwidth - lpos;
+ temp = _rl_screenwidth - lpos;
+ CHECK_INV_LBREAKS ();
inv_lbreaks[++newlines] = out + temp;
lpos = 4 - temp;
}
#if defined (DISPLAY_TABS)
else if (c == '\t')
{
- register int temp, newout;
+ register int newout;
+
+#if 0
newout = (out | (int)7) + 1;
+#else
+ newout = out + 8 - lpos % 8;
+#endif
temp = newout - out;
- if (lpos + temp >= screenwidth)
+ if (lpos + temp >= _rl_screenwidth)
{
register int temp2;
- temp2 = screenwidth - lpos;
+ temp2 = _rl_screenwidth - lpos;
+ CHECK_INV_LBREAKS ();
inv_lbreaks[++newlines] = out + temp2;
lpos = temp - temp2;
while (out < newout)
}
}
#endif
- else if (c == '\n' && _rl_horizontal_scroll_mode == 0 && term_up && *term_up)
- {
- line[out++] = '\0'; /* XXX - sentinel */
- inv_lbreaks[++newlines] = out;
- lpos = 0;
- }
+ else if (c == '\n' && _rl_horizontal_scroll_mode == 0 && _rl_term_up && *_rl_term_up)
+ {
+ line[out++] = '\0'; /* XXX - sentinel */
+ CHECK_INV_LBREAKS ();
+ inv_lbreaks[++newlines] = out;
+ lpos = 0;
+ }
else if (CTRL_CHAR (c) || c == RUBOUT)
{
line[out++] = '^';
}
else
{
+#if defined (HANDLE_MULTIBYTE)
+ if (MB_CUR_MAX > 1 && rl_byte_oriented == 0)
+ {
+ register int i;
+
+ _rl_wrapped_multicolumn = 0;
+
+ if (_rl_screenwidth < lpos + wc_width)
+ for (i = lpos; i < _rl_screenwidth; i++)
+ {
+ /* The space will be removed in update_line() */
+ line[out++] = ' ';
+ _rl_wrapped_multicolumn++;
+ CHECK_LPOS();
+ }
+ if (in == rl_point)
+ {
+ c_pos = out;
+ lb_linenum = newlines;
+ }
+ for (i = in; i < in+wc_bytes; i++)
+ line[out++] = rl_line_buffer[i];
+ for (i = 0; i < wc_width; i++)
+ CHECK_LPOS();
+ }
+ else
+ {
+ line[out++] = c;
+ CHECK_LPOS();
+ }
+#else
line[out++] = c;
CHECK_LPOS();
+#endif
}
+
+#if defined (HANDLE_MULTIBYTE)
+ if (MB_CUR_MAX > 1 && rl_byte_oriented == 0)
+ {
+ in += wc_bytes;
+ wc_bytes = mbrtowc (&wc, rl_line_buffer + in, rl_end - in, &ps);
+ }
+ else
+ in++;
+#endif
+
}
line[out] = '\0';
if (c_pos < 0)
}
inv_botlin = lb_botlin = newlines;
+ CHECK_INV_LBREAKS ();
inv_lbreaks[newlines+1] = out;
cursor_linenum = lb_linenum;
- /* C_POS == position in buffer where cursor should be placed. */
+ /* C_POS == position in buffer where cursor should be placed.
+ CURSOR_LINENUM == line number where the cursor should be placed. */
/* PWP: now is when things get a bit hairy. The visible and invisible
line buffers are really multiple lines, which would wrap every
otherwise, let long lines display in a single terminal line, and
horizontally scroll it. */
- if (_rl_horizontal_scroll_mode == 0 && term_up && *term_up)
+ if (_rl_horizontal_scroll_mode == 0 && _rl_term_up && *_rl_term_up)
{
- int nleft, pos, changed_screen_line;
+ int nleft, pos, changed_screen_line, tx;
if (!rl_display_fixed || forced_display)
{
/* If we have more than a screenful of material to display, then
only display a screenful. We should display the last screen,
not the first. */
- if (out >= screenchars)
- out = screenchars - 1;
+ if (out >= _rl_screenchars)
+ {
+ if (MB_CUR_MAX > 1 && rl_byte_oriented == 0)
+ out = _rl_find_prev_mbchar (line, _rl_screenchars, MB_FIND_ANY);
+ else
+ out = _rl_screenchars - 1;
+ }
/* The first line is at character position 0 in the buffer. The
second and subsequent lines start at inv_lbreaks[N], offset by
/* For each line in the buffer, do the updating display. */
for (linenum = 0; linenum <= inv_botlin; linenum++)
{
+ o_cpos = _rl_last_c_pos;
+ cpos_adjusted = 0;
update_line (VIS_LINE(linenum), INV_LINE(linenum), linenum,
VIS_LLEN(linenum), INV_LLEN(linenum), inv_botlin);
+ /* update_line potentially changes _rl_last_c_pos, but doesn't
+ take invisible characters into account, since _rl_last_c_pos
+ is an absolute cursor position in a multibyte locale. See
+ if compensating here is the right thing, or if we have to
+ change update_line itself. There is one case in which
+ update_line adjusts _rl_last_c_pos itself (so it can pass
+ _rl_move_cursor_relative accurate values); it communicates
+ this back by setting cpos_adjusted */
+ if (linenum == 0 && (MB_CUR_MAX > 1 && rl_byte_oriented == 0) &&
+ cpos_adjusted == 0 &&
+ _rl_last_c_pos != o_cpos &&
+ _rl_last_c_pos > wrap_offset &&
+ o_cpos < prompt_last_invisible)
+ _rl_last_c_pos -= wrap_offset;
+
/* If this is the line with the prompt, we might need to
compensate for invisible characters in the new line. Do
this only if there is not more than one new line (which
(wrap_offset > visible_wrap_offset) &&
(_rl_last_c_pos < visible_first_line_len))
{
- nleft = screenwidth + wrap_offset - _rl_last_c_pos;
+ if (MB_CUR_MAX > 1 && rl_byte_oriented == 0)
+ nleft = _rl_screenwidth - _rl_last_c_pos;
+ else
+ nleft = _rl_screenwidth + wrap_offset - _rl_last_c_pos;
if (nleft)
_rl_clear_to_eol (nleft);
}
_rl_move_vert (linenum);
_rl_move_cursor_relative (0, tt);
_rl_clear_to_eol
- ((linenum == _rl_vis_botlin) ? strlen (tt) : screenwidth);
+ ((linenum == _rl_vis_botlin) ? strlen (tt) : _rl_screenwidth);
}
}
_rl_vis_botlin = inv_botlin;
if (changed_screen_line)
{
_rl_move_vert (cursor_linenum);
- /* If we moved up to the line with the prompt using term_up,
- the physical cursor position on the screen stays the same,
- but the buffer position needs to be adjusted to account
- for invisible characters. */
- if (cursor_linenum == 0 && wrap_offset)
- _rl_last_c_pos += wrap_offset;
+ /* If we moved up to the line with the prompt using _rl_term_up,
+ the physical cursor position on the screen stays the same,
+ but the buffer position needs to be adjusted to account
+ for invisible characters. */
+ if ((MB_CUR_MAX == 1 || rl_byte_oriented) && cursor_linenum == 0 && wrap_offset)
+ _rl_last_c_pos += wrap_offset;
}
/* We have to reprint the prompt if it contains invisible
the characters from the current cursor position. But we
only need to reprint it if the cursor is before the last
invisible character in the prompt string. */
- nleft = visible_length + wrap_offset;
+ nleft = prompt_visible_length + wrap_offset;
if (cursor_linenum == 0 && wrap_offset > 0 && _rl_last_c_pos > 0 &&
- _rl_last_c_pos <= last_invisible && local_prompt)
+ _rl_last_c_pos <= prompt_last_invisible && local_prompt)
{
#if defined (__MSDOS__)
putc ('\r', rl_outstream);
#else
- if (term_cr)
- tputs (term_cr, 1, _rl_output_character_function);
+ if (_rl_term_cr)
+ tputs (_rl_term_cr, 1, _rl_output_character_function);
#endif
_rl_output_some_chars (local_prompt, nleft);
- _rl_last_c_pos = nleft;
+ if (MB_CUR_MAX > 1 && rl_byte_oriented == 0)
+ _rl_last_c_pos = _rl_col_width (local_prompt, 0, nleft) - wrap_offset;
+ else
+ _rl_last_c_pos = nleft;
}
/* Where on that line? And where does that line start
start of the line and the cursor position. */
nleft = c_pos - pos;
+ /* NLEFT is now a number of characters in a buffer. When in a
+ multibyte locale, however, _rl_last_c_pos is an absolute cursor
+ position that doesn't take invisible characters in the prompt
+ into account. We use a fudge factor to compensate. */
+
/* Since _rl_backspace() doesn't know about invisible characters in the
prompt, and there's no good way to tell it, we compensate for
those characters here and call _rl_backspace() directly. */
if (wrap_offset && cursor_linenum == 0 && nleft < _rl_last_c_pos)
{
- _rl_backspace (_rl_last_c_pos - nleft);
- _rl_last_c_pos = nleft;
+ if (MB_CUR_MAX > 1 && rl_byte_oriented == 0)
+ tx = _rl_col_width (&visible_line[pos], 0, nleft) - visible_wrap_offset;
+ else
+ tx = nleft;
+ if (_rl_last_c_pos > tx)
+ {
+ _rl_backspace (_rl_last_c_pos - tx); /* XXX */
+ _rl_last_c_pos = tx;
+ }
}
- if (nleft != _rl_last_c_pos)
+ /* We need to note that in a multibyte locale we are dealing with
+ _rl_last_c_pos as an absolute cursor position, but moving to a
+ point specified by a buffer position (NLEFT) that doesn't take
+ invisible characters into account. */
+ if (MB_CUR_MAX > 1 && rl_byte_oriented == 0)
+ _rl_move_cursor_relative (nleft, &invisible_line[pos]);
+ else if (nleft != _rl_last_c_pos)
_rl_move_cursor_relative (nleft, &invisible_line[pos]);
}
}
/* The number of characters that will be displayed before the cursor. */
ndisp = c_pos - wrap_offset;
- nleft = visible_length + wrap_offset;
+ nleft = prompt_visible_length + wrap_offset;
/* Where the new cursor position will be on the screen. This can be
- longer than SCREENWIDTH; if it is, lmargin will be adjusted. */
+ longer than SCREENWIDTH; if it is, lmargin will be adjusted. */
phys_c_pos = c_pos - (last_lmargin ? last_lmargin : wrap_offset);
- t = screenwidth / 3;
+ t = _rl_screenwidth / 3;
/* If the number of characters had already exceeded the screenwidth,
- last_lmargin will be > 0. */
+ last_lmargin will be > 0. */
/* If the number of characters to be displayed is more than the screen
- width, compute the starting offset so that the cursor is about
- two-thirds of the way across the screen. */
- if (phys_c_pos > screenwidth - 2)
+ width, compute the starting offset so that the cursor is about
+ two-thirds of the way across the screen. */
+ if (phys_c_pos > _rl_screenwidth - 2)
{
lmargin = c_pos - (2 * t);
if (lmargin < 0)
if (wrap_offset && lmargin > 0 && lmargin < nleft)
lmargin = nleft;
}
- else if (ndisp < screenwidth - 2) /* XXX - was -1 */
- lmargin = 0;
+ else if (ndisp < _rl_screenwidth - 2) /* XXX - was -1 */
+ lmargin = 0;
else if (phys_c_pos < 1)
{
/* If we are moving back towards the beginning of the line and
lmargin = nleft;
}
else
- lmargin = last_lmargin;
+ lmargin = last_lmargin;
/* If the first character on the screen isn't the first character
in the display line, indicate this with a special character. */
line[lmargin] = '<';
/* If SCREENWIDTH characters starting at LMARGIN do not encompass
- the whole line, indicate that with a special characters at the
- right edge of the screen. If LMARGIN is 0, we need to take the
- wrap offset into account. */
- t = lmargin + M_OFFSET (lmargin, wrap_offset) + screenwidth;
+ the whole line, indicate that with a special character at the
+ right edge of the screen. If LMARGIN is 0, we need to take the
+ wrap offset into account. */
+ t = lmargin + M_OFFSET (lmargin, wrap_offset) + _rl_screenwidth;
if (t < out)
- line[t - 1] = '>';
+ line[t - 1] = '>';
if (!rl_display_fixed || forced_display || lmargin != last_lmargin)
{
update_line (&visible_line[last_lmargin],
&invisible_line[lmargin],
0,
- screenwidth + visible_wrap_offset,
- screenwidth + (lmargin ? 0 : wrap_offset),
+ _rl_screenwidth + visible_wrap_offset,
+ _rl_screenwidth + (lmargin ? 0 : wrap_offset),
0);
/* If the visible new line is shorter than the old, but the number
(_rl_last_c_pos == out) &&
t < visible_first_line_len)
{
- nleft = screenwidth - t;
+ nleft = _rl_screenwidth - t;
_rl_clear_to_eol (nleft);
}
visible_first_line_len = out - lmargin - M_OFFSET (lmargin, wrap_offset);
- if (visible_first_line_len > screenwidth)
- visible_first_line_len = screenwidth;
+ if (visible_first_line_len > _rl_screenwidth)
+ visible_first_line_len = _rl_screenwidth;
_rl_move_cursor_relative (c_pos - lmargin, &invisible_line[lmargin]);
last_lmargin = lmargin;
/* Swap visible and non-visible lines. */
{
- char *temp = visible_line;
- int *itemp = vis_lbreaks;
+ char *vtemp = visible_line;
+ int *itemp = vis_lbreaks, ntemp = vis_lbsize;
+
visible_line = invisible_line;
- invisible_line = temp;
+ invisible_line = vtemp;
+
vis_lbreaks = inv_lbreaks;
inv_lbreaks = itemp;
+
+ vis_lbsize = inv_lbsize;
+ inv_lbsize = ntemp;
+
rl_display_fixed = 0;
/* If we are displaying on a single line, and last_lmargin is > 0, we
are not displaying any invisible characters, so set visible_wrap_offset
else
visible_wrap_offset = wrap_offset;
}
+
+ _rl_release_sigint ();
}
/* PWP: update_line() is based on finding the middle difference of each
\new first difference
All are character pointers for the sake of speed. Special cases for
- no differences, as well as for end of line additions must be handeled.
+ no differences, as well as for end of line additions must be handled.
Could be made even smarter, but this works well enough */
static void
register char *ofd, *ols, *oe, *nfd, *nls, *ne;
int temp, lendiff, wsatend, od, nd;
int current_invis_chars;
+ int col_lendiff, col_temp;
+#if defined (HANDLE_MULTIBYTE)
+ mbstate_t ps_new, ps_old;
+ int new_offset, old_offset, tmp;
+#endif
/* If we're at the right edge of a terminal that supports xn, we're
ready to wrap around, so do so. This fixes problems with knowing
the exact cursor position and cut-and-paste with certain terminal
emulators. In this calculation, TEMP is the physical screen
position of the cursor. */
- temp = _rl_last_c_pos - W_OFFSET(_rl_last_v_pos, visible_wrap_offset);
- if (temp == screenwidth && _rl_term_autowrap && !_rl_horizontal_scroll_mode
- && _rl_last_v_pos == current_line - 1)
+ if (MB_CUR_MAX > 1 && rl_byte_oriented == 0)
+ temp = _rl_last_c_pos;
+ else
+ temp = _rl_last_c_pos - W_OFFSET(_rl_last_v_pos, visible_wrap_offset);
+ if (temp == _rl_screenwidth && _rl_term_autowrap && !_rl_horizontal_scroll_mode
+ && _rl_last_v_pos == current_line - 1)
{
- if (new[0])
- putc (new[0], rl_outstream);
+#if defined (HANDLE_MULTIBYTE)
+ if (MB_CUR_MAX > 1 && rl_byte_oriented == 0)
+ {
+ wchar_t wc;
+ mbstate_t ps;
+ int tempwidth, bytes;
+ size_t ret;
+
+ /* This fixes only double-column characters, but if the wrapped
+ character comsumes more than three columns, spaces will be
+ inserted in the string buffer. */
+ if (_rl_wrapped_line[current_line] > 0)
+ _rl_clear_to_eol (_rl_wrapped_line[current_line]);
+
+ memset (&ps, 0, sizeof (mbstate_t));
+ ret = mbrtowc (&wc, new, MB_CUR_MAX, &ps);
+ if (MB_INVALIDCH (ret))
+ {
+ tempwidth = 1;
+ ret = 1;
+ }
+ else if (MB_NULLWCH (ret))
+ tempwidth = 0;
+ else
+ tempwidth = wcwidth (wc);
+
+ if (tempwidth > 0)
+ {
+ int count;
+ bytes = ret;
+ for (count = 0; count < bytes; count++)
+ putc (new[count], rl_outstream);
+ _rl_last_c_pos = tempwidth;
+ _rl_last_v_pos++;
+ memset (&ps, 0, sizeof (mbstate_t));
+ ret = mbrtowc (&wc, old, MB_CUR_MAX, &ps);
+ if (ret != 0 && bytes != 0)
+ {
+ if (MB_INVALIDCH (ret))
+ memmove (old+bytes, old+1, strlen (old+1));
+ else
+ memmove (old+bytes, old+ret, strlen (old+ret));
+ memcpy (old, new, bytes);
+ }
+ }
+ else
+ {
+ putc (' ', rl_outstream);
+ _rl_last_c_pos = 1;
+ _rl_last_v_pos++;
+ if (old[0] && new[0])
+ old[0] = new[0];
+ }
+ }
else
- putc (' ', rl_outstream);
- _rl_last_c_pos = 1; /* XXX */
- _rl_last_v_pos++;
- if (old[0] && new[0])
- old[0] = new[0];
+#endif
+ {
+ if (new[0])
+ putc (new[0], rl_outstream);
+ else
+ putc (' ', rl_outstream);
+ _rl_last_c_pos = 1;
+ _rl_last_v_pos++;
+ if (old[0] && new[0])
+ old[0] = new[0];
+ }
}
+
/* Find first difference. */
+#if defined (HANDLE_MULTIBYTE)
+ if (MB_CUR_MAX > 1 && rl_byte_oriented == 0)
+ {
+ /* See if the old line is a subset of the new line, so that the
+ only change is adding characters. */
+ temp = (omax < nmax) ? omax : nmax;
+ if (memcmp (old, new, temp) == 0)
+ {
+ ofd = old + temp;
+ nfd = new + temp;
+ }
+ else
+ {
+ memset (&ps_new, 0, sizeof(mbstate_t));
+ memset (&ps_old, 0, sizeof(mbstate_t));
+
+ if (omax == nmax && STREQN (new, old, omax))
+ {
+ ofd = old + omax;
+ nfd = new + nmax;
+ }
+ else
+ {
+ new_offset = old_offset = 0;
+ for (ofd = old, nfd = new;
+ (ofd - old < omax) && *ofd &&
+ _rl_compare_chars(old, old_offset, &ps_old, new, new_offset, &ps_new); )
+ {
+ old_offset = _rl_find_next_mbchar (old, old_offset, 1, MB_FIND_ANY);
+ new_offset = _rl_find_next_mbchar (new, new_offset, 1, MB_FIND_ANY);
+ ofd = old + old_offset;
+ nfd = new + new_offset;
+ }
+ }
+ }
+ }
+ else
+#endif
for (ofd = old, nfd = new;
(ofd - old < omax) && *ofd && (*ofd == *nfd);
ofd++, nfd++)
return;
wsatend = 1; /* flag for trailing whitespace */
+
+#if defined (HANDLE_MULTIBYTE)
+ if (MB_CUR_MAX > 1 && rl_byte_oriented == 0)
+ {
+ ols = old + _rl_find_prev_mbchar (old, oe - old, MB_FIND_ANY);
+ nls = new + _rl_find_prev_mbchar (new, ne - new, MB_FIND_ANY);
+ while ((ols > ofd) && (nls > nfd))
+ {
+ memset (&ps_old, 0, sizeof (mbstate_t));
+ memset (&ps_new, 0, sizeof (mbstate_t));
+
+#if 0
+ /* On advice from jir@yamato.ibm.com */
+ _rl_adjust_point (old, ols - old, &ps_old);
+ _rl_adjust_point (new, nls - new, &ps_new);
+#endif
+
+ if (_rl_compare_chars (old, ols - old, &ps_old, new, nls - new, &ps_new) == 0)
+ break;
+
+ if (*ols == ' ')
+ wsatend = 0;
+
+ ols = old + _rl_find_prev_mbchar (old, ols - old, MB_FIND_ANY);
+ nls = new + _rl_find_prev_mbchar (new, nls - new, MB_FIND_ANY);
+ }
+ }
+ else
+ {
+#endif /* HANDLE_MULTIBYTE */
ols = oe - 1; /* find last same */
nls = ne - 1;
while ((ols > ofd) && (nls > nfd) && (*ols == *nls))
ols--;
nls--;
}
+#if defined (HANDLE_MULTIBYTE)
+ }
+#endif
if (wsatend)
{
ols = oe;
nls = ne;
}
+#if defined (HANDLE_MULTIBYTE)
+ /* This may not work for stateful encoding, but who cares? To handle
+ stateful encoding properly, we have to scan each string from the
+ beginning and compare. */
+ else if (_rl_compare_chars (ols, 0, NULL, nls, 0, NULL) == 0)
+#else
else if (*ols != *nls)
+#endif
{
if (*ols) /* don't step past the NUL */
- ols++;
+ {
+ if (MB_CUR_MAX > 1 && rl_byte_oriented == 0)
+ ols = old + _rl_find_next_mbchar (old, ols - old, 1, MB_FIND_ANY);
+ else
+ ols++;
+ }
if (*nls)
- nls++;
+ {
+ if (MB_CUR_MAX > 1 && rl_byte_oriented == 0)
+ nls = new + _rl_find_next_mbchar (new, nls - new, 1, MB_FIND_ANY);
+ else
+ nls++;
+ }
}
/* count of invisible characters in the current invisible line. */
if (_rl_last_v_pos != current_line)
{
_rl_move_vert (current_line);
- if (current_line == 0 && visible_wrap_offset)
+ if ((MB_CUR_MAX == 1 || rl_byte_oriented) && current_line == 0 && visible_wrap_offset)
_rl_last_c_pos += visible_wrap_offset;
}
lendiff = local_prompt ? strlen (local_prompt) : 0;
od = ofd - old; /* index of first difference in visible line */
if (current_line == 0 && !_rl_horizontal_scroll_mode &&
- term_cr && lendiff > visible_length && _rl_last_c_pos > 0 &&
- od > lendiff && _rl_last_c_pos < last_invisible)
+ _rl_term_cr && lendiff > prompt_visible_length && _rl_last_c_pos > 0 &&
+ od >= lendiff && _rl_last_c_pos <= prompt_last_invisible)
{
#if defined (__MSDOS__)
putc ('\r', rl_outstream);
#else
- tputs (term_cr, 1, _rl_output_character_function);
-#endif /* !__MSDOS__ */
+ tputs (_rl_term_cr, 1, _rl_output_character_function);
+#endif
_rl_output_some_chars (local_prompt, lendiff);
- _rl_last_c_pos = lendiff;
+ if (MB_CUR_MAX > 1 && rl_byte_oriented == 0)
+ {
+ /* We take wrap_offset into account here so we can pass correct
+ information to _rl_move_cursor_relative. */
+ _rl_last_c_pos = _rl_col_width (local_prompt, 0, lendiff) - wrap_offset;
+ cpos_adjusted = 1;
+ }
+ else
+ _rl_last_c_pos = lendiff;
}
_rl_move_cursor_relative (od, old);
- /* if (len (new) > len (old)) */
+ /* if (len (new) > len (old))
+ lendiff == difference in buffer
+ col_lendiff == difference on screen
+ When not using multibyte characters, these are equal */
lendiff = (nls - nfd) - (ols - ofd);
+ if (MB_CUR_MAX > 1 && rl_byte_oriented == 0)
+ col_lendiff = _rl_col_width (new, nfd - new, nls - new) - _rl_col_width (old, ofd - old, ols - old);
+ else
+ col_lendiff = lendiff;
/* If we are changing the number of invisible characters in a line, and
the spot of first difference is before the end of the invisible chars,
if (current_line == 0 && !_rl_horizontal_scroll_mode &&
current_invis_chars != visible_wrap_offset)
{
- temp = visible_wrap_offset - current_invis_chars;
- lendiff += temp;
+ if (MB_CUR_MAX > 1 && rl_byte_oriented == 0)
+ {
+ lendiff += visible_wrap_offset - current_invis_chars;
+ col_lendiff += visible_wrap_offset - current_invis_chars;
+ }
+ else
+ {
+ lendiff += visible_wrap_offset - current_invis_chars;
+ col_lendiff = lendiff;
+ }
}
/* Insert (diff (len (old), len (new)) ch. */
temp = ne - nfd;
- if (lendiff > 0)
+ if (MB_CUR_MAX > 1 && rl_byte_oriented == 0)
+ col_temp = _rl_col_width (new, nfd - new, ne - new);
+ else
+ col_temp = temp;
+
+ if (col_lendiff > 0) /* XXX - was lendiff */
{
/* Non-zero if we're increasing the number of lines. */
int gl = current_line >= _rl_vis_botlin && inv_botlin > _rl_vis_botlin;
use the terminal's capabilities. If we're growing the number
of lines, make sure we actually cause the new line to wrap
around on auto-wrapping terminals. */
- if (terminal_can_insert && ((2 * temp) >= lendiff || term_IC) && (!_rl_term_autowrap || !gl))
+ if (_rl_terminal_can_insert && ((2 * col_temp) >= col_lendiff || _rl_term_IC) && (!_rl_term_autowrap || !gl))
{
- /* If lendiff > visible_length and _rl_last_c_pos == 0 and
+ /* If lendiff > prompt_visible_length and _rl_last_c_pos == 0 and
_rl_horizontal_scroll_mode == 1, inserting the characters with
- term_IC or term_ic will screw up the screen because of the
+ _rl_term_IC or _rl_term_ic will screw up the screen because of the
invisible characters. We need to just draw them. */
if (*ols && (!_rl_horizontal_scroll_mode || _rl_last_c_pos > 0 ||
- lendiff <= visible_length || !current_invis_chars))
+ lendiff <= prompt_visible_length || !current_invis_chars))
{
- insert_some_chars (nfd, lendiff);
- _rl_last_c_pos += lendiff;
+ insert_some_chars (nfd, lendiff, col_lendiff);
+ _rl_last_c_pos += col_lendiff;
}
- else if (*ols == 0)
+ else if ((MB_CUR_MAX == 1 || rl_byte_oriented != 0) && *ols == 0 && lendiff > 0)
{
/* At the end of a line the characters do not have to
be "inserted". They can just be placed on the screen. */
/* However, this screws up the rest of this block, which
- assumes you've done the insert because you can. */
+ assumes you've done the insert because you can. */
_rl_output_some_chars (nfd, lendiff);
- _rl_last_c_pos += lendiff;
+ _rl_last_c_pos += col_lendiff;
}
else
{
the end. We have invisible characters in this line. This
is a dumb update. */
_rl_output_some_chars (nfd, temp);
- _rl_last_c_pos += temp;
+ _rl_last_c_pos += col_temp;
return;
}
/* Copy (new) chars to screen from first diff to last match. */
if ((temp - lendiff) > 0)
{
_rl_output_some_chars (nfd + lendiff, temp - lendiff);
- _rl_last_c_pos += temp - lendiff;
+#if 1
+ /* XXX -- this bears closer inspection. Fixes a redisplay bug
+ reported against bash-3.0-alpha by Andreas Schwab involving
+ multibyte characters and prompt strings with invisible
+ characters, but was previously disabled. */
+ _rl_last_c_pos += _rl_col_width (nfd+lendiff, 0, temp-col_lendiff);
+#else
+ _rl_last_c_pos += _rl_col_width (nfd+lendiff, 0, temp-lendiff);
+#endif
}
}
else
{
/* cannot insert chars, write to EOL */
_rl_output_some_chars (nfd, temp);
- _rl_last_c_pos += temp;
+ _rl_last_c_pos += col_temp;
+ /* If we're in a multibyte locale and were before the last invisible
+ char in the current line (which implies we just output some invisible
+ characters) we need to adjust _rl_last_c_pos, since it represents
+ a physical character position. */
}
}
else /* Delete characters from line. */
{
/* If possible and inexpensive to use terminal deletion, then do so. */
- if (term_dc && (2 * temp) >= -lendiff)
+ if (_rl_term_dc && (2 * col_temp) >= -col_lendiff)
{
/* If all we're doing is erasing the invisible characters in the
prompt string, don't bother. It screws up the assumptions
about what's on the screen. */
if (_rl_horizontal_scroll_mode && _rl_last_c_pos == 0 &&
-lendiff == visible_wrap_offset)
- lendiff = 0;
+ col_lendiff = 0;
- if (lendiff)
- delete_chars (-lendiff); /* delete (diff) characters */
+ if (col_lendiff)
+ delete_chars (-col_lendiff); /* delete (diff) characters */
/* Copy (new) chars to screen from first diff to last match */
temp = nls - nfd;
if (temp > 0)
{
_rl_output_some_chars (nfd, temp);
- _rl_last_c_pos += temp;
+ _rl_last_c_pos += _rl_col_width (nfd, 0, temp);;
}
}
/* Otherwise, print over the existing material. */
if (temp > 0)
{
_rl_output_some_chars (nfd, temp);
- _rl_last_c_pos += temp;
+ _rl_last_c_pos += col_temp; /* XXX */
}
lendiff = (oe - old) - (ne - new);
- if (_rl_term_autowrap && current_line < inv_botlin)
- space_to_eol (lendiff);
+ if (MB_CUR_MAX > 1 && rl_byte_oriented == 0)
+ col_lendiff = _rl_col_width (old, 0, oe - old) - _rl_col_width (new, 0, ne - new);
else
- _rl_clear_to_eol (lendiff);
+ col_lendiff = lendiff;
+
+ if (col_lendiff)
+ {
+ if (_rl_term_autowrap && current_line < inv_botlin)
+ space_to_eol (col_lendiff);
+ else
+ _rl_clear_to_eol (col_lendiff);
+ }
}
}
}
return 0;
}
+/* Tell the update routines that we have moved onto a new line with the
+ prompt already displayed. Code originally from the version of readline
+ distributed with CLISP. rl_expand_prompt must have already been called
+ (explicitly or implicitly). This still doesn't work exactly right. */
+int
+rl_on_new_line_with_prompt ()
+{
+ int prompt_size, i, l, real_screenwidth, newlines;
+ char *prompt_last_line, *lprompt;
+
+ /* Initialize visible_line and invisible_line to ensure that they can hold
+ the already-displayed prompt. */
+ prompt_size = strlen (rl_prompt) + 1;
+ init_line_structures (prompt_size);
+
+ /* Make sure the line structures hold the already-displayed prompt for
+ redisplay. */
+ lprompt = local_prompt ? local_prompt : rl_prompt;
+ strcpy (visible_line, lprompt);
+ strcpy (invisible_line, lprompt);
+
+ /* If the prompt contains newlines, take the last tail. */
+ prompt_last_line = strrchr (rl_prompt, '\n');
+ if (!prompt_last_line)
+ prompt_last_line = rl_prompt;
+
+ l = strlen (prompt_last_line);
+ if (MB_CUR_MAX > 1 && rl_byte_oriented == 0)
+ _rl_last_c_pos = _rl_col_width (prompt_last_line, 0, l); /* XXX */
+ else
+ _rl_last_c_pos = l;
+
+ /* Dissect prompt_last_line into screen lines. Note that here we have
+ to use the real screenwidth. Readline's notion of screenwidth might be
+ one less, see terminal.c. */
+ real_screenwidth = _rl_screenwidth + (_rl_term_autowrap ? 0 : 1);
+ _rl_last_v_pos = l / real_screenwidth;
+ /* If the prompt length is a multiple of real_screenwidth, we don't know
+ whether the cursor is at the end of the last line, or already at the
+ beginning of the next line. Output a newline just to be safe. */
+ if (l > 0 && (l % real_screenwidth) == 0)
+ _rl_output_some_chars ("\n", 1);
+ last_lmargin = 0;
+
+ newlines = 0; i = 0;
+ while (i <= l)
+ {
+ _rl_vis_botlin = newlines;
+ vis_lbreaks[newlines++] = i;
+ i += real_screenwidth;
+ }
+ vis_lbreaks[newlines] = l;
+ visible_wrap_offset = 0;
+
+ rl_display_prompt = rl_prompt; /* XXX - make sure it's set */
+
+ return 0;
+}
+
/* Actually update the display, period. */
int
rl_forced_update_display ()
register char *temp = visible_line;
while (*temp)
- *temp++ = '\0';
+ *temp++ = '\0';
}
rl_on_new_line ();
forced_display++;
}
/* Move the cursor from _rl_last_c_pos to NEW, which are buffer indices.
+ (Well, when we don't have multibyte characters, _rl_last_c_pos is a
+ buffer index.)
DATA is the contents of the screen line of interest; i.e., where
the movement is being done. */
void
_rl_move_cursor_relative (new, data)
int new;
- char *data;
+ const char *data;
{
register int i;
+ int woff; /* number of invisible chars on current line */
+ int cpos, dpos; /* current and desired cursor positions */
+
+ woff = W_OFFSET (_rl_last_v_pos, wrap_offset);
+ cpos = _rl_last_c_pos;
+#if defined (HANDLE_MULTIBYTE)
+ /* If we have multibyte characters, NEW is indexed by the buffer point in
+ a multibyte string, but _rl_last_c_pos is the display position. In
+ this case, NEW's display position is not obvious and must be
+ calculated. We need to account for invisible characters in this line,
+ as long as we are past them and they are counted by _rl_col_width. */
+ if (MB_CUR_MAX > 1 && rl_byte_oriented == 0)
+ {
+ dpos = _rl_col_width (data, 0, new);
+ if (dpos > woff)
+ dpos -= woff;
+ }
+ else
+#endif
+ dpos = new;
/* If we don't have to do anything, then return. */
- if (_rl_last_c_pos == new) return;
+ if (cpos == dpos)
+ return;
/* It may be faster to output a CR, and then move forwards instead
of moving backwards. */
/* i == current physical cursor position. */
- i = _rl_last_c_pos - W_OFFSET(_rl_last_v_pos, visible_wrap_offset);
+#if defined (HANDLE_MULTIBYTE)
+ if (MB_CUR_MAX > 1 && rl_byte_oriented == 0)
+ i = _rl_last_c_pos;
+ else
+#endif
+ i = _rl_last_c_pos - woff;
if (new == 0 || CR_FASTER (new, _rl_last_c_pos) ||
- (_rl_term_autowrap && i == screenwidth))
+ (_rl_term_autowrap && i == _rl_screenwidth))
{
#if defined (__MSDOS__)
putc ('\r', rl_outstream);
#else
- tputs (term_cr, 1, _rl_output_character_function);
+ tputs (_rl_term_cr, 1, _rl_output_character_function);
#endif /* !__MSDOS__ */
- _rl_last_c_pos = 0;
+ cpos = _rl_last_c_pos = 0;
}
- if (_rl_last_c_pos < new)
+ if (cpos < dpos)
{
/* Move the cursor forward. We do it by printing the command
to move the cursor forward if there is one, else print that
That kind of control is for people who don't know what the
data is underneath the cursor. */
#if defined (HACK_TERMCAP_MOTION)
- extern char *term_forward_char;
-
- if (term_forward_char)
- for (i = _rl_last_c_pos; i < new; i++)
- tputs (term_forward_char, 1, _rl_output_character_function);
+ if (_rl_term_forward_char)
+ {
+ for (i = cpos; i < dpos; i++)
+ tputs (_rl_term_forward_char, 1, _rl_output_character_function);
+ }
else
- for (i = _rl_last_c_pos; i < new; i++)
- putc (data[i], rl_outstream);
-#else
- for (i = _rl_last_c_pos; i < new; i++)
- putc (data[i], rl_outstream);
#endif /* HACK_TERMCAP_MOTION */
+ if (MB_CUR_MAX > 1 && rl_byte_oriented == 0)
+ {
+ tputs (_rl_term_cr, 1, _rl_output_character_function);
+ for (i = 0; i < new; i++)
+ putc (data[i], rl_outstream);
+ }
+ else
+ for (i = cpos; i < new; i++)
+ putc (data[i], rl_outstream);
}
- else if (_rl_last_c_pos != new)
- _rl_backspace (_rl_last_c_pos - new);
- _rl_last_c_pos = new;
+
+#if defined (HANDLE_MULTIBYTE)
+ /* NEW points to the buffer point, but _rl_last_c_pos is the display point.
+ The byte length of the string is probably bigger than the column width
+ of the string, which means that if NEW == _rl_last_c_pos, then NEW's
+ display point is less than _rl_last_c_pos. */
+#endif
+ else if (cpos > dpos)
+ _rl_backspace (cpos - dpos);
+
+ _rl_last_c_pos = dpos;
}
/* PWP: move the cursor up or down. */
{
register int delta, i;
- if (_rl_last_v_pos == to || to > screenheight)
+ if (_rl_last_v_pos == to || to > _rl_screenheight)
return;
-#if defined (__GO32__)
- {
- int row, col;
-
- ScreenGetCursor (&row, &col);
- ScreenSetCursor ((row + to - _rl_last_v_pos), col);
- }
-#else /* !__GO32__ */
-
if ((delta = to - _rl_last_v_pos) > 0)
{
for (i = 0; i < delta; i++)
putc ('\n', rl_outstream);
- tputs (term_cr, 1, _rl_output_character_function);
+#if defined (__MSDOS__)
+ putc ('\r', rl_outstream);
+#else
+ tputs (_rl_term_cr, 1, _rl_output_character_function);
+#endif
_rl_last_c_pos = 0;
}
else
{ /* delta < 0 */
- if (term_up && *term_up)
+#ifdef __MSDOS__
+ int row, col;
+
+ fflush (rl_outstream); /* make sure the cursor pos is current! */
+ ScreenGetCursor (&row, &col);
+ ScreenSetCursor (row + delta, col);
+ i = -delta; /* in case someone wants to use it after the loop */
+#else /* !__MSDOS__ */
+ if (_rl_term_up && *_rl_term_up)
for (i = 0; i < -delta; i++)
- tputs (term_up, 1, _rl_output_character_function);
+ tputs (_rl_term_up, 1, _rl_output_character_function);
+#endif /* !__MSDOS__ */
}
-#endif /* !__GO32__ */
+
_rl_last_v_pos = to; /* Now TO is here */
}
if (CTRL_CHAR (c) || c == RUBOUT)
return (2);
- return ((isprint (uc)) ? 1 : 2);
+ return ((ISPRINT (uc)) ? 1 : 2);
}
-
/* How to print things in the "echo-area". The prompt is treated as a
mini-modeline. */
+static int msg_saved_prompt = 0;
#if defined (USE_VARARGS)
int
format = va_arg (args, char *);
#endif
+#if defined (HAVE_VSNPRINTF)
+ vsnprintf (msg_buf, sizeof (msg_buf) - 1, format, args);
+#else
vsprintf (msg_buf, format, args);
+ msg_buf[sizeof(msg_buf) - 1] = '\0'; /* overflow? */
+#endif
va_end (args);
+ if (saved_local_prompt == 0)
+ {
+ rl_save_prompt ();
+ msg_saved_prompt = 1;
+ }
rl_display_prompt = msg_buf;
+ local_prompt = expand_prompt (msg_buf, &prompt_visible_length,
+ &prompt_last_invisible,
+ &prompt_invis_chars_first_line,
+ &prompt_physical_chars);
+ local_prompt_prefix = (char *)NULL;
(*rl_redisplay_function) ();
+
return 0;
}
#else /* !USE_VARARGS */
char *format;
{
sprintf (msg_buf, format, arg1, arg2);
+ msg_buf[sizeof(msg_buf) - 1] = '\0'; /* overflow? */
+
rl_display_prompt = msg_buf;
+ if (saved_local_prompt == 0)
+ {
+ rl_save_prompt ();
+ msg_saved_prompt = 1;
+ }
+ local_prompt = expand_prompt (msg_buf, &prompt_visible_length,
+ &prompt_last_invisible,
+ &prompt_invis_chars_first_line,
+ &prompt_physical_chars);
+ local_prompt_prefix = (char *)NULL;
(*rl_redisplay_function) ();
+
return 0;
}
#endif /* !USE_VARARGS */
rl_clear_message ()
{
rl_display_prompt = rl_prompt;
+ if (msg_saved_prompt)
+ {
+ rl_restore_prompt ();
+ msg_saved_prompt = 0;
+ }
(*rl_redisplay_function) ();
return 0;
}
return 0;
}
-static char *saved_local_prompt;
-static char *saved_local_prefix;
-static int saved_last_invisible;
-static int saved_visible_length;
-
void
-_rl_save_prompt ()
+rl_save_prompt ()
{
saved_local_prompt = local_prompt;
saved_local_prefix = local_prompt_prefix;
- saved_last_invisible = last_invisible;
- saved_visible_length = visible_length;
+ saved_prefix_length = prompt_prefix_length;
+ saved_last_invisible = prompt_last_invisible;
+ saved_visible_length = prompt_visible_length;
+ saved_invis_chars_first_line = prompt_invis_chars_first_line;
+ saved_physical_chars = prompt_physical_chars;
local_prompt = local_prompt_prefix = (char *)0;
- last_invisible = visible_length = 0;
+ prompt_last_invisible = prompt_visible_length = prompt_prefix_length = 0;
+ prompt_invis_chars_first_line = prompt_physical_chars = 0;
}
void
-_rl_restore_prompt ()
+rl_restore_prompt ()
{
- if (local_prompt)
- free (local_prompt);
- if (local_prompt_prefix)
- free (local_prompt_prefix);
+ FREE (local_prompt);
+ FREE (local_prompt_prefix);
local_prompt = saved_local_prompt;
local_prompt_prefix = saved_local_prefix;
- last_invisible = saved_last_invisible;
- visible_length = saved_visible_length;
+ prompt_prefix_length = saved_prefix_length;
+ prompt_last_invisible = saved_last_invisible;
+ prompt_visible_length = saved_visible_length;
+ prompt_invis_chars_first_line = saved_invis_chars_first_line;
+ prompt_physical_chars = saved_physical_chars;
+
+ /* can test saved_local_prompt to see if prompt info has been saved. */
+ saved_local_prompt = saved_local_prefix = (char *)0;
+ saved_last_invisible = saved_visible_length = saved_prefix_length = 0;
+ saved_invis_chars_first_line = saved_physical_chars = 0;
}
char *
int pchar;
{
int len;
- char *pmt;
+ char *pmt, *p;
- _rl_save_prompt ();
+ rl_save_prompt ();
- if (saved_local_prompt == 0)
+ /* We've saved the prompt, and can do anything with the various prompt
+ strings we need before they're restored. We want the unexpanded
+ portion of the prompt string after any final newline. */
+ p = rl_prompt ? strrchr (rl_prompt, '\n') : 0;
+ if (p == 0)
{
len = (rl_prompt && *rl_prompt) ? strlen (rl_prompt) : 0;
- pmt = xmalloc (len + 2);
+ pmt = (char *)xmalloc (len + 2);
if (len)
- strcpy (pmt, rl_prompt);
+ strcpy (pmt, rl_prompt);
pmt[len] = pchar;
pmt[len+1] = '\0';
}
else
{
- len = *saved_local_prompt ? strlen (saved_local_prompt) : 0;
- pmt = xmalloc (len + 2);
+ p++;
+ len = strlen (p);
+ pmt = (char *)xmalloc (len + 2);
if (len)
- strcpy (pmt, saved_local_prompt);
+ strcpy (pmt, p);
pmt[len] = pchar;
pmt[len+1] = '\0';
- local_prompt = savestring (pmt);
- last_invisible = saved_last_invisible;
- visible_length = saved_visible_length + 1;
- }
+ }
+
+ /* will be overwritten by expand_prompt, called from rl_message */
+ prompt_physical_chars = saved_physical_chars + 1;
return pmt;
}
_rl_clear_to_eol (count)
int count;
{
-#if !defined (__GO32__)
- if (term_clreol)
- tputs (term_clreol, 1, _rl_output_character_function);
- else if (count)
-#endif /* !__GO32__ */
+#ifndef __MSDOS__
+ if (_rl_term_clreol)
+ tputs (_rl_term_clreol, 1, _rl_output_character_function);
+ else
+#endif
+ if (count)
space_to_eol (count);
}
void
_rl_clear_screen ()
{
-#if !defined (__GO32__)
- if (term_clrpag)
- tputs (term_clrpag, 1, _rl_output_character_function);
+#if defined (__GO32__)
+ ScreenClear (); /* FIXME: only works in text modes */
+ ScreenSetCursor (0, 0); /* term_clrpag is "cl" which homes the cursor */
+#else
+ if (_rl_term_clrpag)
+ tputs (_rl_term_clrpag, 1, _rl_output_character_function);
else
-#endif /* !__GO32__ */
- crlf ();
+ rl_crlf ();
+#endif
}
-/* Insert COUNT characters from STRING to the output stream. */
+/* Insert COUNT characters from STRING to the output stream at column COL. */
static void
-insert_some_chars (string, count)
+insert_some_chars (string, count, col)
char *string;
- int count;
+ int count, col;
{
-#if defined (__GO32__)
- int row, col, width;
- char *row_start;
-
- ScreenGetCursor (&row, &col);
- width = ScreenCols ();
- row_start = ScreenPrimary + (row * width);
-
- memcpy (row_start + col + count, row_start + col, width - col - count);
-
- /* Place the text on the screen. */
+#if defined (__MSDOS__) || defined (__MINGW32__)
_rl_output_some_chars (string, count);
-#else /* !_GO32 */
+#else
+ /* DEBUGGING */
+ if (MB_CUR_MAX == 1 || rl_byte_oriented)
+ if (count != col)
+ fprintf(stderr, "readline: debug: insert_some_chars: count (%d) != col (%d)\n", count, col);
/* If IC is defined, then we do not have to "enter" insert mode. */
- if (term_IC)
+ if (_rl_term_IC)
{
char *buffer;
- buffer = tgoto (term_IC, 0, count);
+
+ buffer = tgoto (_rl_term_IC, 0, col);
tputs (buffer, 1, _rl_output_character_function);
_rl_output_some_chars (string, count);
}
register int i;
/* If we have to turn on insert-mode, then do so. */
- if (term_im && *term_im)
- tputs (term_im, 1, _rl_output_character_function);
+ if (_rl_term_im && *_rl_term_im)
+ tputs (_rl_term_im, 1, _rl_output_character_function);
/* If there is a special command for inserting characters, then
use that first to open up the space. */
- if (term_ic && *term_ic)
+ if (_rl_term_ic && *_rl_term_ic)
{
- for (i = count; i--; )
- tputs (term_ic, 1, _rl_output_character_function);
+ for (i = col; i--; )
+ tputs (_rl_term_ic, 1, _rl_output_character_function);
}
/* Print the text. */
/* If there is a string to turn off insert mode, we had best use
it now. */
- if (term_ei && *term_ei)
- tputs (term_ei, 1, _rl_output_character_function);
+ if (_rl_term_ei && *_rl_term_ei)
+ tputs (_rl_term_ei, 1, _rl_output_character_function);
}
-#endif /* !__GO32__ */
+#endif /* __MSDOS__ || __MINGW32__ */
}
/* Delete COUNT characters from the display line. */
delete_chars (count)
int count;
{
-#if defined (__GO32__)
- int row, col, width;
- char *row_start;
-
- ScreenGetCursor (&row, &col);
- width = ScreenCols ();
- row_start = ScreenPrimary + (row * width);
-
- memcpy (row_start + col, row_start + col + count, width - col - count);
- memset (row_start + width - count, 0, count * 2);
-#else /* !_GO32 */
-
- if (count > screenwidth) /* XXX */
+ if (count > _rl_screenwidth) /* XXX */
return;
- if (term_DC && *term_DC)
+#if !defined (__MSDOS__) && !defined (__MINGW32__)
+ if (_rl_term_DC && *_rl_term_DC)
{
char *buffer;
- buffer = tgoto (term_DC, count, count);
+ buffer = tgoto (_rl_term_DC, count, count);
tputs (buffer, count, _rl_output_character_function);
}
else
{
- if (term_dc && *term_dc)
+ if (_rl_term_dc && *_rl_term_dc)
while (count--)
- tputs (term_dc, 1, _rl_output_character_function);
+ tputs (_rl_term_dc, 1, _rl_output_character_function);
}
-#endif /* !__GO32__ */
+#endif /* !__MSDOS__ && !__MINGW32__ */
}
void
}
_rl_move_vert (_rl_vis_botlin);
/* If we've wrapped lines, remove the final xterm line-wrap flag. */
- if (full_lines && _rl_term_autowrap && (VIS_LLEN(_rl_vis_botlin) == screenwidth))
+ if (full_lines && _rl_term_autowrap && (VIS_LLEN(_rl_vis_botlin) == _rl_screenwidth))
{
char *last_line;
- last_line = &visible_line[inv_lbreaks[_rl_vis_botlin]];
- _rl_move_cursor_relative (screenwidth - 1, last_line);
+
+ last_line = &visible_line[vis_lbreaks[_rl_vis_botlin]];
+ _rl_move_cursor_relative (_rl_screenwidth - 1, last_line);
_rl_clear_to_eol (0);
- putc (last_line[screenwidth - 1], rl_outstream);
+ putc (last_line[_rl_screenwidth - 1], rl_outstream);
}
_rl_vis_botlin = 0;
- crlf ();
+ rl_crlf ();
fflush (rl_outstream);
rl_display_fixed++;
}
static void
cr ()
{
- if (term_cr)
+ if (_rl_term_cr)
{
#if defined (__MSDOS__)
putc ('\r', rl_outstream);
#else
- tputs (term_cr, 1, _rl_output_character_function);
-#endif /* !__MSDOS__ */
+ tputs (_rl_term_cr, 1, _rl_output_character_function);
+#endif
_rl_last_c_pos = 0;
}
}
+/* Redraw the last line of a multi-line prompt that may possibly contain
+ terminal escape sequences. Called with the cursor at column 0 of the
+ line to draw the prompt on. */
+static void
+redraw_prompt (t)
+ char *t;
+{
+ char *oldp;
+
+ oldp = rl_display_prompt;
+ rl_save_prompt ();
+
+ rl_display_prompt = t;
+ local_prompt = expand_prompt (t, &prompt_visible_length,
+ &prompt_last_invisible,
+ &prompt_invis_chars_first_line,
+ &prompt_physical_chars);
+ local_prompt_prefix = (char *)NULL;
+
+ rl_forced_update_display ();
+
+ rl_display_prompt = oldp;
+ rl_restore_prompt();
+}
+
/* Redisplay the current line after a SIGWINCH is received. */
void
_rl_redisplay_after_sigwinch ()
{
- char *t, *oldp, *oldl, *oldlprefix;
+ char *t;
/* Clear the current line and put the cursor at column 0. Make sure
the right thing happens if we have wrapped to a new screen line. */
- if (term_cr)
+ if (_rl_term_cr)
{
#if defined (__MSDOS__)
putc ('\r', rl_outstream);
#else
- tputs (term_cr, 1, _rl_output_character_function);
-#endif /* !__MSDOS__ */
+ tputs (_rl_term_cr, 1, _rl_output_character_function);
+#endif
_rl_last_c_pos = 0;
#if defined (__MSDOS__)
- space_to_eol (screenwidth);
+ space_to_eol (_rl_screenwidth);
putc ('\r', rl_outstream);
#else
- if (term_clreol)
- tputs (term_clreol, 1, _rl_output_character_function);
+ if (_rl_term_clreol)
+ tputs (_rl_term_clreol, 1, _rl_output_character_function);
else
{
- space_to_eol (screenwidth);
- tputs (term_cr, 1, _rl_output_character_function);
+ space_to_eol (_rl_screenwidth);
+ tputs (_rl_term_cr, 1, _rl_output_character_function);
}
#endif
if (_rl_last_v_pos > 0)
_rl_move_vert (0);
}
else
- crlf ();
+ rl_crlf ();
/* Redraw only the last line of a multi-line prompt. */
t = strrchr (rl_display_prompt, '\n');
if (t)
- {
- oldp = rl_display_prompt;
- oldl = local_prompt;
- oldlprefix = local_prompt_prefix;
- rl_display_prompt = ++t;
- local_prompt = local_prompt_prefix = (char *)NULL;
- rl_forced_update_display ();
- rl_display_prompt = oldp;
- local_prompt = oldl;
- local_prompt_prefix = oldlprefix;
- }
+ redraw_prompt (++t);
else
rl_forced_update_display ();
}
_rl_move_vert (_rl_vis_botlin);
_rl_vis_botlin = 0;
fflush (rl_outstream);
- rl_restart_output ();
+ rl_restart_output (1, 0);
}
}
+
+void
+_rl_erase_entire_line ()
+{
+ cr ();
+ _rl_clear_to_eol (0);
+ cr ();
+ fflush (rl_outstream);
+}
+
+/* return the `current display line' of the cursor -- the number of lines to
+ move up to get to the first screen line of the current readline line. */
+int
+_rl_current_display_line ()
+{
+ int ret, nleft;
+
+ /* Find out whether or not there might be invisible characters in the
+ editing buffer. */
+ if (rl_display_prompt == rl_prompt)
+ nleft = _rl_last_c_pos - _rl_screenwidth - rl_visible_prompt_length;
+ else
+ nleft = _rl_last_c_pos - _rl_screenwidth;
+
+ if (nleft > 0)
+ ret = 1 + nleft / _rl_screenwidth;
+ else
+ ret = 0;
+
+ return ret;
+}
+
+#if defined (HANDLE_MULTIBYTE)
+/* Calculate the number of screen columns occupied by STR from START to END.
+ In the case of multibyte characters with stateful encoding, we have to
+ scan from the beginning of the string to take the state into account. */
+static int
+_rl_col_width (str, start, end)
+ const char *str;
+ int start, end;
+{
+ wchar_t wc;
+ mbstate_t ps = {0};
+ int tmp, point, width, max;
+
+ if (end <= start)
+ return 0;
+
+ point = 0;
+ max = end;
+
+ while (point < start)
+ {
+ tmp = mbrlen (str + point, max, &ps);
+ if (MB_INVALIDCH ((size_t)tmp))
+ {
+ /* In this case, the bytes are invalid or too short to compose a
+ multibyte character, so we assume that the first byte represents
+ a single character. */
+ point++;
+ max--;
+
+ /* 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 (MB_NULLWCH (tmp))
+ break; /* Found '\0' */
+ else
+ {
+ point += tmp;
+ max -= tmp;
+ }
+ }
+
+ /* If START is not a byte that starts a character, then POINT will be
+ greater than START. In this case, assume that (POINT - START) gives
+ a byte count that is the number of columns of difference. */
+ width = point - start;
+
+ while (point < end)
+ {
+ tmp = mbrtowc (&wc, str + point, max, &ps);
+ if (MB_INVALIDCH ((size_t)tmp))
+ {
+ /* In this case, the bytes are invalid or too short to compose a
+ multibyte character, so we assume that the first byte represents
+ a single character. */
+ point++;
+ max--;
+
+ /* and assume that the byte occupies a single column. */
+ width++;
+
+ /* 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 (MB_NULLWCH (tmp))
+ break; /* Found '\0' */
+ else
+ {
+ point += tmp;
+ max -= tmp;
+ tmp = wcwidth(wc);
+ width += (tmp >= 0) ? tmp : 1;
+ }
+ }
+
+ width += point - end;
+
+ return width;
+}
+#endif /* HANDLE_MULTIBYTE */
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