/* display.c -- readline redisplay facility. */
-/* Copyright (C) 1987, 1989, 1992 Free Software Foundation, Inc.
+/* Copyright (C) 1987-2009 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.
+ This file is part of the GNU Readline Library (Readline), 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
+ Readline is free software: you can redistribute it and/or modify
+ it under the terms of the GNU General Public License as published by
+ the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
- 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
+ Readline is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
- 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. */
+ You should have received a copy of the GNU General Public License
+ along with Readline. If not, see <http://www.gnu.org/licenses/>.
+*/
+
#define READLINE_LIBRARY
#if defined (HAVE_CONFIG_H)
/* System-specific feature definitions and include files. */
#include "rldefs.h"
+#include "rlmbutil.h"
/* Termcap library stuff. */
#include "tcap.h"
extern char *strchr (), *strrchr ();
#endif /* !strchr && !__STDC__ */
-#if defined (HACK_TERMCAP_MOTION)
-extern char *term_forward_char;
-#endif
+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));
-static void update_line __P((char *, char *, int, int, int, int));
-static void space_to_eol __P((int));
-static void delete_chars __P((int));
-static void insert_some_chars __P((char *, int));
-static void cr __P((void));
+/* State of visible and invisible lines. */
+struct line_state
+ {
+ char *line;
+ int *lbreaks;
+ int lbsize;
+#if defined (HANDLE_MULTIBYTE)
+ int *wrapped_line;
+ int wbsize;
+#endif
+ };
-static int *inv_lbreaks, *vis_lbreaks;
-static int inv_lbsize, vis_lbsize;
+/* The line display buffers. One is the line currently displayed on
+ the screen. The other is the line about to be displayed. */
+static struct line_state line_state_array[2];
+static struct line_state *line_state_visible = &line_state_array[0];
+static struct line_state *line_state_invisible = &line_state_array[1];
+static int line_structures_initialized = 0;
+
+/* Backwards-compatible names. */
+#define inv_lbreaks (line_state_invisible->lbreaks)
+#define inv_lbsize (line_state_invisible->lbsize)
+#define vis_lbreaks (line_state_visible->lbreaks)
+#define vis_lbsize (line_state_visible->lbsize)
+
+#define visible_line (line_state_visible->line)
+#define invisible_line (line_state_invisible->line)
+
+#if defined (HANDLE_MULTIBYTE)
+static int _rl_col_width PARAMS((const char *, int, int));
+#else
+# define _rl_col_width(l, s, e) (((e) <= (s)) ? 0 : (e) - (s))
+#endif
/* 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. */
+ by backing up or outputting a carriage return and moving forward. CUR
+ and NEW are either both buffer positions or absolute screen positions. */
#define CR_FASTER(new, cur) (((new) + 1) < ((cur) - (new)))
+/* _rl_last_c_pos is an absolute cursor position in multibyte locales and a
+ buffer index in others. This macro is used when deciding whether the
+ current cursor position is in the middle of a prompt string containing
+ invisible characters. XXX - might need to take `modmark' into account. */
+#define PROMPT_ENDING_INDEX \
+ ((MB_CUR_MAX > 1 && rl_byte_oriented == 0) ? prompt_physical_chars : prompt_last_invisible+1)
+
+
/* **************************************************************** */
/* */
/* Display stuff */
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;
+static int cpos_buffer_position;
+static int prompt_multibyte_chars;
+
/* Number of lines currently on screen minus 1. */
int _rl_vis_botlin = 0;
doing horizontal scrolling. It shifts in thirds of a screenwidth. */
static int last_lmargin;
-/* The line display buffers. One is the line currently displayed on
- the screen. The other is the line about to be displayed. */
-static char *visible_line = (char *)NULL;
-static char *invisible_line = (char *)NULL;
-
/* A buffer for `modeline' messages. */
static char msg_buf[128];
/* 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 local_prompt_len;
+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;
+
+/* set to a non-zero value by rl_redisplay if we are marking modified history
+ lines and the current line is so marked. */
+static int modmark;
+
+/* 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_local_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 the returned 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;
+ char *r, *ret, *p, *igstart;
+ 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 */
+
+ igstart = 0;
+ 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 */
- if (*p == RL_PROMPT_START_IGNORE)
+ if (ignoring == 0 && *p == RL_PROMPT_START_IGNORE) /* XXX - check ignoring? */
{
- ignoring++;
+ ignoring = 1;
+ igstart = p;
continue;
}
else if (ignoring && *p == RL_PROMPT_END_IGNORE)
{
ignoring = 0;
- last = r - ret - 1;
+ if (p != (igstart + 1))
+ 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 ends up being assigned to prompt_visible_length,
+ which is the number of characters in the buffer that
+ contribute to characters on the screen, which might
+ not be the same as the number of physical characters
+ on the screen in the presence of multibyte characters */
+ 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;
}
{
char *ret;
- ret = expand_prompt (pmt, (int *)NULL, (int *)NULL);
+ 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 = visible_length = 0;
+ local_prompt_len = 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);
+ local_prompt_len = local_prompt ? strlen (local_prompt) : 0;
+ 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,
+ &prompt_invis_chars_first_line,
+ &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,
+ (int *)NULL,
+ (int *)NULL);
*t = c;
- return (prefix_length);
+ local_prompt_len = local_prompt ? strlen (local_prompt) : 0;
+ return (prompt_prefix_length);
}
}
{
if (line_size < minsize)
line_size = minsize;
- visible_line = xmalloc (line_size);
- invisible_line = xmalloc (line_size);
+ 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 = 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);
}
for (n = minsize; n < line_size; n++)
{
/* should be enough. */
inv_lbsize = vis_lbsize = 256;
+
+#if defined (HANDLE_MULTIBYTE)
+ line_state_visible->wbsize = vis_lbsize;
+ line_state_visible->wrapped_line = (int *)xmalloc (line_state_visible->wbsize * sizeof (int));
+
+ line_state_invisible->wbsize = inv_lbsize;
+ line_state_invisible->wrapped_line = (int *)xmalloc (line_state_invisible->wbsize * sizeof (int));
+#endif
+
inv_lbreaks = (int *)xmalloc (inv_lbsize * sizeof (int));
vis_lbreaks = (int *)xmalloc (vis_lbsize * sizeof (int));
inv_lbreaks[0] = vis_lbreaks[0] = 0;
}
+
+ line_structures_initialized = 1;
}
/* Basic redisplay algorithm. */
{
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 inv_botlin, lb_botlin, lb_linenum, o_cpos;
+ int newlines, lpos, temp, n0, num, prompt_lines_estimate;
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)
+ if (_rl_echoing_p == 0)
return;
+ /* Block keyboard interrupts because this function manipulates global
+ data structures. */
+ _rl_block_sigint ();
+
if (!rl_display_prompt)
rl_display_prompt = "";
- if (invisible_line == 0)
+ if (line_structures_initialized == 0)
{
init_line_structures (0);
rl_on_new_line ();
}
/* Draw the line into the buffer. */
- c_pos = -1;
+ cpos_buffer_position = -1;
+
+ prompt_multibyte_chars = prompt_visible_length - prompt_physical_chars;
line = invisible_line;
out = inv_botlin = 0;
/* 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
number of non-visible characters in the prompt string. */
if (rl_display_prompt == rl_prompt || local_prompt)
{
- int local_len = local_prompt ? strlen (local_prompt) : 0;
if (local_prompt_prefix && forced_display)
_rl_output_some_chars (local_prompt_prefix, strlen (local_prompt_prefix));
- if (local_len > 0)
+ if (local_prompt_len > 0)
{
- temp = local_len + out + 2;
+ temp = local_prompt_len + out + 2;
if (temp >= line_size)
{
line_size = (temp + 1024) - (temp % 1024);
- visible_line = xrealloc (visible_line, line_size);
- line = invisible_line = xrealloc (invisible_line, line_size);
+ 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;
+ strncpy (line + out, local_prompt, local_prompt_len);
+ out += local_prompt_len;
}
line[out] = '\0';
- wrap_offset = local_len - visible_length;
+ wrap_offset = local_prompt_len - prompt_visible_length;
}
else
{
}
}
- 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 = xrealloc (visible_line, line_size);
- line = invisible_line = xrealloc (invisible_line, line_size);
+ 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() \
inv_lbreaks = (int *)xrealloc (inv_lbreaks, inv_lbsize * sizeof (int)); \
} \
} while (0)
-
+
+#if defined (HANDLE_MULTIBYTE)
#define CHECK_LPOS() \
do { \
lpos++; \
- if (lpos >= screenwidth) \
+ if (lpos >= _rl_screenwidth) \
{ \
if (newlines >= (inv_lbsize - 2)) \
{ \
inv_lbreaks = (int *)xrealloc (inv_lbreaks, inv_lbsize * sizeof (int)); \
} \
inv_lbreaks[++newlines] = out; \
+ if (newlines >= (line_state_invisible->wbsize - 1)) \
+ { \
+ line_state_invisible->wbsize *= 2; \
+ line_state_invisible->wrapped_line = (int *)xrealloc (line_state_invisible->wrapped_line, line_state_invisible->wbsize * sizeof(int)); \
+ } \
+ line_state_invisible->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;
- lpos = out - wrap_offset;
+ lpos = prompt_physical_chars + modmark;
- /* XXX - what if lpos is already >= screenwidth before we start drawing the
+#if defined (HANDLE_MULTIBYTE)
+ memset (line_state_invisible->wrapped_line, 0, line_state_invisible->wbsize * sizeof (int));
+ 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 (or, more generally, last) line. */
+
+ /* This is zero-based, used to set the newlines */
+ prompt_lines_estimate = lpos / _rl_screenwidth;
+
+ /* what if lpos is already >= _rl_screenwidth before we start drawing the
contents of the command line? */
- while (lpos >= screenwidth)
+ while (lpos >= _rl_screenwidth)
{
- /* XXX - possible fix from Darin Johnson <darin@acuson.com> for prompt
- string with invisible characters that is longer than the screen
- width. XXX - this doesn't work right if invisible characters have
- to be put on the second screen line -- it adds too much (the number
- of invisible chars after the screenwidth). */
- temp = ((newlines + 1) * screenwidth) + ((newlines == 0) ? wrap_offset : 0);
-
+ int z;
+ /* 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)
+ if (MB_CUR_MAX > 1 && rl_byte_oriented == 0 && prompt_multibyte_chars > 0)
+ {
+ n0 = num;
+ temp = local_prompt_len;
+ while (num < temp)
+ {
+ z = _rl_col_width (local_prompt, n0, num);
+ if (z > _rl_screenwidth)
+ {
+ num = _rl_find_prev_mbchar (local_prompt, num, MB_FIND_ANY);
+ break;
+ }
+ else if (z == _rl_screenwidth)
+ break;
+ num++;
+ }
+ temp = num;
+ }
+ else
+#endif /* !HANDLE_MULTIBYTE */
+ temp = ((newlines + 1) * _rl_screenwidth);
+
+ /* Now account for invisible characters in the current line. */
+ /* XXX - this assumes that the invisible characters may be split, but only
+ between the first and the last lines. */
+ temp += ((local_prompt_prefix == 0) ? ((newlines == 0) ? prompt_invis_chars_first_line
+ : ((newlines == prompt_lines_estimate) ? wrap_offset : prompt_invis_chars_first_line))
+ : ((newlines == 0) ? wrap_offset : 0));
+
inv_lbreaks[++newlines] = temp;
- lpos -= screenwidth;
+#if defined (HANDLE_MULTIBYTE)
+ if (MB_CUR_MAX > 1 && rl_byte_oriented == 0 && prompt_multibyte_chars > 0)
+ lpos -= _rl_col_width (local_prompt, n0, num);
+ else
+#endif
+ lpos -= _rl_screenwidth;
}
+ prompt_last_screen_line = newlines;
+
+ /* Draw the rest of the line (after the prompt) into invisible_line, keeping
+ track of where the cursor is (cpos_buffer_position), 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;
}
if (in == rl_point)
{
- c_pos = out;
+ cpos_buffer_position = out;
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;
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;
}
}
#endif
- else if (c == '\n' && _rl_horizontal_scroll_mode == 0 && term_up && *term_up)
+ else if (c == '\n' && _rl_horizontal_scroll_mode == 0 && _rl_term_up && *_rl_term_up)
{
line[out++] = '\0'; /* XXX - sentinel */
CHECK_INV_LBREAKS ();
}
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)
+ {
+ cpos_buffer_position = 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)
+ if (cpos_buffer_position < 0)
{
- c_pos = out;
+ cpos_buffer_position = out;
lb_linenum = newlines;
}
inv_lbreaks[newlines+1] = out;
cursor_linenum = lb_linenum;
- /* C_POS == position in buffer where cursor should be placed. */
+ /* CPOS_BUFFER_POSITION == 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
OFFSET (which has already been calculated above). */
+#define INVIS_FIRST() (prompt_physical_chars > _rl_screenwidth ? prompt_invis_chars_first_line : wrap_offset)
+#define WRAP_OFFSET(line, offset) ((line == 0) \
+ ? (offset ? INVIS_FIRST() : 0) \
+ : ((line == prompt_last_screen_line) ? wrap_offset-prompt_invis_chars_first_line : 0))
#define W_OFFSET(line, offset) ((line) == 0 ? offset : 0)
#define VIS_LLEN(l) ((l) > _rl_vis_botlin ? 0 : (vis_lbreaks[l+1] - vis_lbreaks[l]))
#define INV_LLEN(l) (inv_lbreaks[l+1] - inv_lbreaks[l])
/* For each line in the buffer, do the updating display. */
for (linenum = 0; linenum <= inv_botlin; linenum++)
{
+ /* This can lead us astray if we execute a program that changes
+ the locale from a non-multibyte to a multibyte one. */
+ 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 are several cases 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 we assume that
+ _rl_last_c_pos is correct (an absolute cursor position) each
+ time update_line is called, then we can assume in our
+ calculations that o_cpos does not need to be adjusted by
+ wrap_offset. */
+ 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 -= prompt_invis_chars_first_line; /* XXX - was wrap_offset */
+ else if (linenum == prompt_last_screen_line && prompt_physical_chars > _rl_screenwidth &&
+ (MB_CUR_MAX > 1 && rl_byte_oriented == 0) &&
+ cpos_adjusted == 0 &&
+ _rl_last_c_pos != o_cpos &&
+ _rl_last_c_pos > (prompt_last_invisible - _rl_screenwidth - prompt_invis_chars_first_line))
+ _rl_last_c_pos -= (wrap_offset-prompt_invis_chars_first_line);
+
/* 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);
}
+#if 0
+ /* This segment is intended to handle the case where the prompt
+ has invisible characters on the second line and the new line
+ to be displayed needs to clear the rest of the old characters
+ out (e.g., when printing the i-search prompt). In general,
+ the case of the new line being shorter than the old.
+ Incomplete */
+ else if (linenum == prompt_last_screen_line &&
+ prompt_physical_chars > _rl_screenwidth &&
+ wrap_offset != prompt_invis_chars_first_line &&
+ _rl_last_c_pos == out &&
+#endif
+
/* Since the new first line is now visible, save its length. */
if (linenum == 0)
_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,
+ /* 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 (cursor_linenum == 0 && wrap_offset)
+ if ((MB_CUR_MAX == 1 || rl_byte_oriented) && cursor_linenum == 0 && wrap_offset)
_rl_last_c_pos += wrap_offset;
}
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)
+#if 0
+ _rl_last_c_pos <= PROMPT_ENDING_INDEX && local_prompt)
+#else
+ _rl_last_c_pos < PROMPT_ENDING_INDEX && local_prompt)
+#endif
{
#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
+ if (modmark)
+ _rl_output_some_chars ("*", 1);
+
_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 + modmark;
+ else
+ _rl_last_c_pos = nleft + modmark;
}
/* Where on that line? And where does that line start
in the buffer? */
pos = inv_lbreaks[cursor_linenum];
/* nleft == number of characters in the line buffer between the
- start of the line and the cursor position. */
- nleft = c_pos - pos;
+ start of the line and the desired cursor position. */
+ nleft = cpos_buffer_position - 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;
+ /* TX == new physical cursor position in multibyte locale. */
+ 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 (tx >= 0 && _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]);
}
}
will be LMARGIN. */
/* The number of characters that will be displayed before the cursor. */
- ndisp = c_pos - wrap_offset;
- nleft = visible_length + wrap_offset;
+ ndisp = cpos_buffer_position - 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. */
- phys_c_pos = c_pos - (last_lmargin ? last_lmargin : wrap_offset);
- t = screenwidth / 3;
+ phys_c_pos = cpos_buffer_position - (last_lmargin ? last_lmargin : wrap_offset);
+ t = _rl_screenwidth / 3;
/* If the number of characters had already exceeded the screenwidth,
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)
+ if (phys_c_pos > _rl_screenwidth - 2)
{
- lmargin = c_pos - (2 * t);
+ lmargin = cpos_buffer_position - (2 * t);
if (lmargin < 0)
lmargin = 0;
/* If the left margin would be in the middle of a prompt with
if (wrap_offset && lmargin > 0 && lmargin < nleft)
lmargin = nleft;
}
- else if (ndisp < screenwidth - 2) /* XXX - was -1 */
+ 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
the last margin is no longer correct, compute a new one. */
- lmargin = ((c_pos - 1) / t) * t; /* XXX */
+ lmargin = ((cpos_buffer_position - 1) / t) * t; /* XXX */
if (wrap_offset && lmargin > 0 && lmargin < nleft)
lmargin = nleft;
}
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) + screenwidth;
+ t = lmargin + M_OFFSET (lmargin, wrap_offset) + _rl_screenwidth;
if (t < out)
line[t - 1] = '>';
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]);
+ _rl_move_cursor_relative (cpos_buffer_position - lmargin, &invisible_line[lmargin]);
last_lmargin = lmargin;
}
}
/* Swap visible and non-visible lines. */
{
- char *temp = visible_line;
- int *itemp = vis_lbreaks, ntemp = vis_lbsize;
-
- visible_line = invisible_line;
- invisible_line = temp;
+ struct line_state *vtemp = line_state_visible;
- vis_lbreaks = inv_lbreaks;
- inv_lbreaks = itemp;
-
- vis_lbsize = inv_lbsize;
- inv_lbsize = ntemp;
+ line_state_visible = line_state_invisible;
+ line_state_invisible = vtemp;
rl_display_fixed = 0;
/* If we are displaying on a single line, and last_lmargin is > 0, we
else
visible_wrap_offset = wrap_offset;
}
+
+ _rl_release_sigint ();
}
/* PWP: update_line() is based on finding the middle difference of each
int current_line, omax, nmax, inv_botlin;
{
register char *ofd, *ols, *oe, *nfd, *nls, *ne;
- int temp, lendiff, wsatend, od, nd;
+ int temp, lendiff, wsatend, od, nd, twidth, o_cpos;
int current_invis_chars;
+ int col_lendiff, col_temp;
+#if defined (HANDLE_MULTIBYTE)
+ mbstate_t ps_new, ps_old;
+ int new_offset, old_offset;
+#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 - WRAP_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 (current_line < line_state_visible->wbsize && line_state_visible->wrapped_line[current_line] > 0)
+ _rl_clear_to_eol (line_state_visible->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) /* adding at the end */
+ {
+ 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;
}
sequences (like drawing the `unbold' sequence without a corresponding
`bold') that manifests itself on certain terminals. */
- lendiff = local_prompt ? strlen (local_prompt) : 0;
+ lendiff = local_prompt_len;
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_ENDING_INDEX)
{
#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
+ if (modmark)
+ _rl_output_some_chars ("*", 1);
_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 + modmark;
+ cpos_adjusted = 1;
+ }
+ else
+ _rl_last_c_pos = lendiff + modmark;
}
+ o_cpos = _rl_last_c_pos;
+
+ /* When this function returns, _rl_last_c_pos is correct, and an absolute
+ cursor postion in multibyte mode, but a buffer index when not in a
+ multibyte locale. */
_rl_move_cursor_relative (od, old);
+#if 1
+#if defined (HANDLE_MULTIBYTE)
+ /* We need to indicate that the cursor position is correct in the presence of
+ invisible characters in the prompt string. Let's see if setting this when
+ we make sure we're at the end of the drawn prompt string works. */
+ if (current_line == 0 && MB_CUR_MAX > 1 && rl_byte_oriented == 0 &&
+ (_rl_last_c_pos > 0 || o_cpos > 0) &&
+ _rl_last_c_pos == prompt_physical_chars)
+ cpos_adjusted = 1;
+#endif
+#endif
- /* 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,
lendiff needs to be adjusted. */
if (current_line == 0 && !_rl_horizontal_scroll_mode &&
current_invis_chars != visible_wrap_offset)
- lendiff += visible_wrap_offset - current_invis_chars;
+ {
+ 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;
+ /* If col_lendiff is > 0, implying that the new string takes up more
+ screen real estate than the old, but lendiff is < 0, meaning that it
+ takes fewer bytes, we need to just output the characters starting
+ from the first difference. These will overwrite what is on the
+ display, so there's no reason to do a smart update. This can really
+ only happen in a multibyte environment. */
+ if (lendiff < 0)
+ {
+ _rl_output_some_chars (nfd, temp);
+ _rl_last_c_pos += _rl_col_width (nfd, 0, temp);
+ /* If nfd begins before any invisible characters in the prompt,
+ adjust _rl_last_c_pos to account for wrap_offset and set
+ cpos_adjusted to let the caller know. */
+ if (current_line == 0 && wrap_offset && ((nfd - new) <= prompt_last_invisible))
+ {
+ _rl_last_c_pos -= wrap_offset;
+ cpos_adjusted = 1;
+ }
+ return;
+ }
/* Sometimes it is cheaper to print the characters rather than
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))
+ else 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))
+ /* The same thing happens if we're trying to draw before the last
+ invisible character in the prompt string or we're increasing the
+ number of invisible characters in the line and we're not drawing
+ the entire prompt string. */
+ if (*ols && ((_rl_horizontal_scroll_mode &&
+ _rl_last_c_pos == 0 &&
+ lendiff > prompt_visible_length &&
+ current_invis_chars > 0) == 0) &&
+ (((MB_CUR_MAX > 1 && rl_byte_oriented == 0) &&
+ current_line == 0 && wrap_offset &&
+ ((nfd - new) <= prompt_last_invisible) &&
+ (col_lendiff < prompt_visible_length)) == 0) &&
+ (visible_wrap_offset >= 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;
+ }
+#if 0 /* XXX - for now */
+ else if ((MB_CUR_MAX > 1 && rl_byte_oriented == 0) && _rl_last_c_pos == 0 && wrap_offset && (nfd-new) <= prompt_last_invisible && col_lendiff < prompt_visible_length && visible_wrap_offset >= current_invis_chars)
+ {
+ _rl_output_some_chars (nfd, lendiff);
+ _rl_last_c_pos += col_lendiff;
}
- else if (*ols == 0)
+#endif
+ 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. */
_rl_output_some_chars (nfd, lendiff);
- _rl_last_c_pos += lendiff;
+ _rl_last_c_pos += col_lendiff;
}
else
{
- /* We have horizontal scrolling and we are not inserting at
- 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;
+ /* If nfd begins before the last invisible character in the
+ prompt, adjust _rl_last_c_pos to account for wrap_offset
+ and set cpos_adjusted to let the caller know. */
+ if ((MB_CUR_MAX > 1 && rl_byte_oriented == 0) && current_line == 0 && wrap_offset && ((nfd - new) <= prompt_last_invisible))
+ {
+ _rl_last_c_pos -= wrap_offset;
+ cpos_adjusted = 1;
+ }
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;
+ /* 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. */
+ if (MB_CUR_MAX > 1 && rl_byte_oriented == 0)
+ twidth = _rl_col_width (nfd+lendiff, 0, temp-col_lendiff);
+ else
+ twidth = temp - lendiff;
+ _rl_last_c_pos += twidth;
+ /* If nfd begins before the last invisible character in the
+ prompt, adjust _rl_last_c_pos to account for wrap_offset
+ and set cpos_adjusted to let the caller know. */
+ if ((MB_CUR_MAX > 1 && rl_byte_oriented == 0) && current_line == 0 && wrap_offset && ((nfd - new) <= prompt_last_invisible))
+ {
+ _rl_last_c_pos -= wrap_offset;
+ cpos_adjusted = 1;
+ }
}
}
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. */
+ if ((MB_CUR_MAX > 1 && rl_byte_oriented == 0) &&
+ current_line == prompt_last_screen_line && wrap_offset &&
+ wrap_offset != prompt_invis_chars_first_line &&
+ ((nfd-new) < (prompt_last_invisible-(current_line*_rl_screenwidth))))
+ {
+ _rl_last_c_pos -= wrap_offset - prompt_invis_chars_first_line;
+ cpos_adjusted = 1;
+ }
}
}
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)
{
+ /* If nfd begins at the prompt, or before the invisible
+ characters in the prompt, we need to adjust _rl_last_c_pos
+ in a multibyte locale to account for the wrap offset and
+ set cpos_adjusted accordingly. */
_rl_output_some_chars (nfd, temp);
- _rl_last_c_pos += temp;
+ if (MB_CUR_MAX > 1 && rl_byte_oriented == 0)
+ {
+ _rl_last_c_pos += _rl_col_width (nfd, 0, temp);
+ if (current_line == 0 && wrap_offset && ((nfd - new) <= prompt_last_invisible))
+ {
+ _rl_last_c_pos -= wrap_offset;
+ cpos_adjusted = 1;
+ }
+ }
+ else
+ _rl_last_c_pos += temp;
}
}
/* Otherwise, print over the existing material. */
{
if (temp > 0)
{
+ /* If nfd begins at the prompt, or before the invisible
+ characters in the prompt, we need to adjust _rl_last_c_pos
+ in a multibyte locale to account for the wrap offset and
+ set cpos_adjusted accordingly. */
_rl_output_some_chars (nfd, temp);
- _rl_last_c_pos += temp;
+ _rl_last_c_pos += col_temp; /* XXX */
+ if (MB_CUR_MAX > 1 && rl_byte_oriented == 0)
+ {
+ if (current_line == 0 && wrap_offset && ((nfd - new) <= prompt_last_invisible))
+ {
+ _rl_last_c_pos -= wrap_offset;
+ cpos_adjusted = 1;
+ }
+ }
}
lendiff = (oe - old) - (ne - new);
- if (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
+ col_lendiff = lendiff;
+
+#if 0
+ if (col_lendiff)
+#else
+ /* If we've already printed over the entire width of the screen,
+ including the old material, then col_lendiff doesn't matter and
+ space_to_eol will insert too many spaces. XXX - maybe we should
+ adjust col_lendiff based on the difference between _rl_last_c_pos
+ and _rl_screenwidth */
+ if (col_lendiff && (_rl_last_c_pos < _rl_screenwidth))
+#endif
{
if (_rl_term_autowrap && current_line < inv_botlin)
- space_to_eol (lendiff);
+ space_to_eol (col_lendiff);
else
- _rl_clear_to_eol (lendiff);
+ _rl_clear_to_eol (col_lendiff);
}
}
}
/* 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. */
+ 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;
+ char *prompt_last_line, *lprompt;
/* Initialize visible_line and invisible_line to ensure that they can hold
the already-displayed prompt. */
/* Make sure the line structures hold the already-displayed prompt for
redisplay. */
- strcpy (visible_line, rl_prompt);
- strcpy (invisible_line, rl_prompt);
+ 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');
prompt_last_line = rl_prompt;
l = strlen (prompt_last_line);
- _rl_last_c_pos = l;
+ 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 = screenwidth + (_rl_term_autowrap ? 0 : 1);
+ 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
vis_lbreaks[newlines] = l;
visible_wrap_offset = 0;
+ rl_display_prompt = rl_prompt; /* XXX - make sure it's set */
+
return 0;
}
int
rl_forced_update_display ()
{
+ register char *temp;
+
if (visible_line)
{
- register char *temp = visible_line;
-
+ temp = visible_line;
while (*temp)
*temp++ = '\0';
}
}
/* 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 = WRAP_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);
+ /* Use NEW when comparing against the last invisible character in the
+ prompt string, since they're both buffer indices and DPOS is a
+ desired display position. */
+ if ((new > prompt_last_invisible) || /* XXX - don't use woff here */
+ (prompt_physical_chars > _rl_screenwidth &&
+ _rl_last_v_pos == prompt_last_screen_line &&
+ wrap_offset >= woff &&
+ new > (prompt_last_invisible-(_rl_screenwidth*_rl_last_v_pos)-wrap_offset)))
+ /* XXX last comparison might need to be >= */
+ {
+ dpos -= woff;
+ /* Since this will be assigned to _rl_last_c_pos at the end (more
+ precisely, _rl_last_c_pos == dpos when this function returns),
+ let the caller know. */
+ cpos_adjusted = 1;
+ }
+ }
+ 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 (new == 0 || CR_FASTER (new, _rl_last_c_pos) ||
- (_rl_term_autowrap && i == screenwidth))
+#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 (dpos == 0 || CR_FASTER (dpos, _rl_last_c_pos) ||
+ (_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
sequence telling the terminal to move forward one character.
That kind of control is for people who don't know what the
data is underneath the cursor. */
-#if defined (HACK_TERMCAP_MOTION)
- if (term_forward_char)
- for (i = _rl_last_c_pos; i < new; i++)
- tputs (term_forward_char, 1, _rl_output_character_function);
+
+ /* However, we need a handle on where the current display position is
+ in the buffer for the immediately preceding comment to be true.
+ In multibyte locales, we don't currently have that info available.
+ Without it, we don't know where the data we have to display begins
+ in the buffer and we have to go back to the beginning of the screen
+ line. In this case, we can use the terminal sequence to move forward
+ if it's available. */
+ if (MB_CUR_MAX > 1 && rl_byte_oriented == 0)
+ {
+ if (_rl_term_forward_char)
+ {
+ for (i = cpos; i < dpos; i++)
+ tputs (_rl_term_forward_char, 1, _rl_output_character_function);
+ }
+ else
+ {
+ tputs (_rl_term_cr, 1, _rl_output_character_function);
+ for (i = 0; i < new; i++)
+ putc (data[i], rl_outstream);
+ }
+ }
else
- for (i = _rl_last_c_pos; i < new; i++)
+ for (i = cpos; 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 */
}
- 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 ((delta = to - _rl_last_v_pos) > 0)
#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
_rl_last_c_pos = 0;
}
else
{ /* delta < 0 */
- if (term_up && *term_up)
+ 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);
}
_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;
+ local_prompt_len = local_prompt ? strlen (local_prompt) : 0;
(*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;
+ local_prompt_len = local_prompt ? strlen (local_prompt) : 0;
(*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 ()
{
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_local_length = local_prompt_len;
+ 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;
+ local_prompt_len = 0;
+ prompt_last_invisible = prompt_visible_length = prompt_prefix_length = 0;
+ prompt_invis_chars_first_line = prompt_physical_chars = 0;
}
void
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;
+ local_prompt_len = saved_local_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_local_length = 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 ();
- 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);
pmt[len] = pchar;
}
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 (term_clreol)
- tputs (term_clreol, 1, _rl_output_character_function);
+ if (_rl_term_clreol)
+ tputs (_rl_term_clreol, 1, _rl_output_character_function);
else if (count)
space_to_eol (count);
}
void
_rl_clear_screen ()
{
- if (term_clrpag)
- tputs (term_clrpag, 1, _rl_output_character_function);
+ if (_rl_term_clrpag)
+ tputs (_rl_term_clrpag, 1, _rl_output_character_function);
else
- crlf ();
+ rl_crlf ();
}
-/* 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 (__MSDOS__) || defined (__MINGW32__)
+ _rl_output_some_chars (string, count);
+#else
+ /* DEBUGGING */
+ if (MB_CUR_MAX == 1 || rl_byte_oriented)
+ if (count != col)
+ _rl_ttymsg ("debug: insert_some_chars: count (%d) != col (%d)", 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 /* __MSDOS__ || __MINGW32__ */
}
/* Delete COUNT characters from the display line. */
delete_chars (count)
int count;
{
- 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 /* !__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;
-#if 0
- last_line = &visible_line[inv_lbreaks[_rl_vis_botlin]];
-#else
+
last_line = &visible_line[vis_lbreaks[_rl_vis_botlin]];
-#endif
- _rl_move_cursor_relative (screenwidth - 1, last_line);
+ cpos_buffer_position = -1; /* don't know where we are in buffer */
+ _rl_move_cursor_relative (_rl_screenwidth - 1, last_line); /* XXX */
_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);
+ tputs (_rl_term_cr, 1, _rl_output_character_function);
#endif
_rl_last_c_pos = 0;
}
redraw_prompt (t)
char *t;
{
- char *oldp, *oldl, *oldlprefix;
- int oldlen, oldlast, oldplen;
+ char *oldp;
- /* Geez, I should make this a struct. */
oldp = rl_display_prompt;
- oldl = local_prompt;
- oldlprefix = local_prompt_prefix;
- oldlen = visible_length;
- oldplen = prefix_length;
- oldlast = last_invisible;
+ rl_save_prompt ();
rl_display_prompt = t;
- local_prompt = expand_prompt (t, &visible_length, &last_invisible);
+ local_prompt = expand_prompt (t, &prompt_visible_length,
+ &prompt_last_invisible,
+ &prompt_invis_chars_first_line,
+ &prompt_physical_chars);
local_prompt_prefix = (char *)NULL;
+ local_prompt_len = local_prompt ? strlen (local_prompt) : 0;
+
rl_forced_update_display ();
rl_display_prompt = oldp;
- local_prompt = oldl;
- local_prompt_prefix = oldlprefix;
- visible_length = oldlen;
- prefix_length = oldplen;
- last_invisible = oldlast;
+ rl_restore_prompt();
}
/* Redisplay the current line after a SIGWINCH is received. */
{
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)
+ /* Clear the last line (assuming that the screen size change will result in
+ either more or fewer characters on that line only) and put the cursor at
+ column 0. Make sure the right thing happens if we have wrapped to a new
+ screen line. */
+ if (_rl_term_cr)
{
+ _rl_move_vert (_rl_vis_botlin);
+
#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
_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');
void
_rl_clean_up_for_exit ()
{
- if (readline_echoing_p)
+ if (_rl_echoing_p)
{
_rl_move_vert (_rl_vis_botlin);
_rl_vis_botlin = 0;
/* 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 - screenwidth - rl_visible_prompt_length;
+ nleft = _rl_last_c_pos - _rl_screenwidth - rl_visible_prompt_length;
else
- nleft = _rl_last_c_pos - screenwidth;
+ nleft = _rl_last_c_pos - _rl_screenwidth;
if (nleft > 0)
- ret = 1 + nleft / screenwidth;
+ 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;
+ int tmp, point, width, max;
+
+ if (end <= start)
+ return 0;
+ if (MB_CUR_MAX == 1 || rl_byte_oriented)
+{
+_rl_ttymsg ("_rl_col_width: called with MB_CUR_MAX == 1");
+ return (end - start);
+}
+
+ memset (&ps, 0, sizeof (mbstate_t));
+
+ 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 */
projects / platform / upstream / bash.git / blobdiff