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__ */
-
/* System-specific feature definitions and include files. */
#include "rldefs.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;
-
-extern int _rl_output_meta_chars;
-extern int _rl_horizontal_scroll_mode;
-extern int _rl_mark_modified_lines;
-extern int _rl_prefer_visible_bell;
-
-/* Variables and functions imported from terminal.c */
-extern void _rl_output_some_chars ();
-extern int _rl_output_character_function ();
-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 ();
+#if defined (HACK_TERMCAP_MOTION)
+extern char *_rl_term_forward_char;
+#endif
-static int *inv_lbreaks, *vis_lbreaks;
+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));
-extern char *xmalloc (), *xrealloc ();
+static int *inv_lbreaks, *vis_lbreaks;
+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. */
/* 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;
+
/* 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. */
/* 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)
char *pmt;
- int *lp, *lip;
+ int *lp, *lip, *niflp;
{
char *r, *ret, *p;
- int l, rl, last, ignoring;
+ int l, rl, last, ignoring, ninvis, invfl;
/* Short-circuit if we can. */
if (strchr (pmt, RL_PROMPT_START_IGNORE) == 0)
l = strlen (pmt);
r = ret = xmalloc (l + 1);
-
- for (rl = ignoring = last = 0, p = pmt; p && *p; p++)
+
+ invfl = 0; /* invisible chars in first line of prompt */
+
+ for (rl = ignoring = last = ninvis = 0, p = pmt; p && *p; p++)
{
/* This code strips the invisible character string markers
RL_PROMPT_START_IGNORE and RL_PROMPT_END_IGNORE */
*r++ = *p;
if (!ignoring)
rl++;
+ else
+ ninvis++;
+ if (rl == _rl_screenwidth)
+ invfl = ninvis;
}
}
+ if (rl < _rl_screenwidth)
+ invfl = ninvis;
+
*r = '\0';
if (lp)
*lp = rl;
if (lip)
*lip = last;
+ if (niflp)
+ *niflp = invfl;
+ 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);
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_visible_length = 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);
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,
+ &prompt_invis_chars_first_line);
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);
*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 = xmalloc (line_size);
+ invisible_line = 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);
+ }
+
+ 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));
+ inv_lbreaks[0] = vis_lbreaks[0] = 0;
+ }
+}
+
/* Basic redisplay algorithm. */
void
rl_redisplay ()
if (invisible_line == 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 ();
}
if (local_len > 0)
{
+ temp = local_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);
+ }
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);
+ 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);
+ }
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)
+
#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)); \
+ } \
+ inv_lbreaks[++newlines] = out; \
+ lpos = 0; \
+ } \
} while (0)
/* inv_lbreaks[i] is where line i starts in the buffer. */
inv_lbreaks[newlines = 0] = 0;
lpos = out - wrap_offset;
- /* XXX - what if lpos is already >= screenwidth before we start drawing the
+ /* 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. */
+
+ /* what if lpos is already >= _rl_screenwidth before we start drawing the
contents of the command line? */
- while (lpos >= screenwidth)
+ while (lpos >= _rl_screenwidth)
{
- 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? */
+ temp = ((newlines + 1) * _rl_screenwidth) +
+ ((newlines == 0) ? prompt_invis_chars_first_line : 0) +
+ ((newlines == 1) ? wrap_offset : 0);
+
inv_lbreaks[++newlines] = temp;
- lpos -= screenwidth;
+ 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 (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;
for (in = 0; in < rl_end; in++)
{
{
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++] = '^';
}
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;
/* 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)
+ 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
(wrap_offset > visible_wrap_offset) &&
(_rl_last_c_pos < visible_first_line_len))
{
- nleft = screenwidth + wrap_offset - _rl_last_c_pos;
+ 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 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)
- _rl_last_c_pos += 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 (term_cr)
- tputs (term_cr, 1, _rl_output_character_function);
+#if defined (__MSDOS__)
+ putc ('\r', rl_outstream);
+#else
+ 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;
}
/* 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
\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
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
+ if (temp == _rl_screenwidth && _rl_term_autowrap && !_rl_horizontal_scroll_mode
&& _rl_last_v_pos == current_line - 1)
{
if (new[0])
_rl_last_c_pos = 1; /* XXX */
_rl_last_v_pos++;
if (old[0] && new[0])
- old[0] = new[0];
+ old[0] = new[0];
}
/* Find first difference. */
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)
{
- 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_output_some_chars (local_prompt, lendiff);
_rl_last_c_pos = lendiff;
}
lendiff needs to be adjusted. */
if (current_line == 0 && !_rl_horizontal_scroll_mode &&
current_invis_chars != visible_wrap_offset)
- {
- temp = visible_wrap_offset - current_invis_chars;
- lendiff += temp;
- }
+ lendiff += visible_wrap_offset - current_invis_chars;
/* Insert (diff (len (old), len (new)) ch. */
temp = ne - nfd;
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 * temp) >= 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;
/* 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;
}
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 * temp) >= -lendiff)
{
/* If all we're doing is erasing the invisible characters in the
prompt string, don't bother. It screws up the assumptions
_rl_last_c_pos += temp;
}
lendiff = (oe - old) - (ne - new);
- if (_rl_term_autowrap && current_line < inv_botlin)
- space_to_eol (lendiff);
- else
- _rl_clear_to_eol (lendiff);
+ if (lendiff)
+ {
+ if (_rl_term_autowrap && current_line < inv_botlin)
+ space_to_eol (lendiff);
+ else
+ _rl_clear_to_eol (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. */
+int
+rl_on_new_line_with_prompt ()
+{
+ int prompt_size, i, l, real_screenwidth, newlines;
+ char *prompt_last_line;
+
+ /* 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. */
+ strcpy (visible_line, rl_prompt);
+ strcpy (invisible_line, rl_prompt);
+
+ /* 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);
+ _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;
+
+ 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++;
void
_rl_move_cursor_relative (new, data)
int new;
- char *data;
+ const char *data;
{
register int i;
/* 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))
+ (_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;
}
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)
+ if (_rl_term_forward_char)
for (i = _rl_last_c_pos; i < new; i++)
- tputs (term_forward_char, 1, _rl_output_character_function);
+ 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);
putc (data[i], rl_outstream);
#endif /* HACK_TERMCAP_MOTION */
}
- else if (_rl_last_c_pos != new)
+ else if (_rl_last_c_pos > new)
_rl_backspace (_rl_last_c_pos - new);
_rl_last_c_pos = new;
}
{
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)
+ 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 /* !__GO32__ */
+
_rl_last_v_pos = to; /* Now TO is here */
}
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_last_invisible = prompt_last_invisible;
+ saved_visible_length = prompt_visible_length;
local_prompt = local_prompt_prefix = (char *)0;
- last_invisible = visible_length = 0;
+ prompt_last_invisible = prompt_visible_length = 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_last_invisible = saved_last_invisible;
+ prompt_visible_length = saved_visible_length;
}
char *
int len;
char *pmt;
- _rl_save_prompt ();
+ rl_save_prompt ();
if (saved_local_prompt == 0)
{
len = (rl_prompt && *rl_prompt) ? strlen (rl_prompt) : 0;
pmt = xmalloc (len + 2);
if (len)
- strcpy (pmt, rl_prompt);
+ strcpy (pmt, rl_prompt);
pmt[len] = pchar;
pmt[len+1] = '\0';
}
len = *saved_local_prompt ? strlen (saved_local_prompt) : 0;
pmt = xmalloc (len + 2);
if (len)
- strcpy (pmt, saved_local_prompt);
+ strcpy (pmt, saved_local_prompt);
pmt[len] = pchar;
pmt[len+1] = '\0';
local_prompt = savestring (pmt);
- last_invisible = saved_last_invisible;
- visible_length = saved_visible_length + 1;
+ prompt_last_invisible = saved_last_invisible;
+ prompt_visible_length = saved_visible_length + 1;
}
return pmt;
}
_rl_clear_to_eol (count)
int count;
{
-#if !defined (__GO32__)
- 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)
-#endif /* !__GO32__ */
space_to_eol (count);
}
void
_rl_clear_screen ()
{
-#if !defined (__GO32__)
- 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
-#endif /* !__GO32__ */
- crlf ();
+ rl_crlf ();
}
/* Insert COUNT characters from STRING to the output stream. */
char *string;
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 + count, row_start + col, width - col - count);
-
- /* Place the text on the screen. */
- _rl_output_some_chars (string, count);
-#else /* !_GO32 */
-
/* 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, count);
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);
+ 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__ */
}
/* 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 (_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__ */
}
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]];
- _rl_move_cursor_relative (screenwidth - 1, last_line);
+#else
+ last_line = &visible_line[vis_lbreaks[_rl_vis_botlin]];
+#endif
+ _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)
{
- 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;
}
}
+/* 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, *oldl, *oldlprefix;
+ int oldlen, oldlast, oldplen, oldninvis;
+
+ /* Geez, I should make this a struct. */
+ oldp = rl_display_prompt;
+ oldl = local_prompt;
+ oldlprefix = local_prompt_prefix;
+ oldlen = prompt_visible_length;
+ oldplen = prompt_prefix_length;
+ oldlast = prompt_last_invisible;
+ oldninvis = prompt_invis_chars_first_line;
+
+ rl_display_prompt = t;
+ local_prompt = expand_prompt (t, &prompt_visible_length,
+ &prompt_last_invisible,
+ &prompt_invis_chars_first_line);
+ local_prompt_prefix = (char *)NULL;
+ rl_forced_update_display ();
+
+ rl_display_prompt = oldp;
+ local_prompt = oldl;
+ local_prompt_prefix = oldlprefix;
+ prompt_visible_length = oldlen;
+ prompt_prefix_length = oldplen;
+ prompt_last_invisible = oldlast;
+ prompt_invis_chars_first_line = oldninvis;
+}
+
/* Redisplay the current line after a SIGWINCH is received. */
void
_rl_redisplay_after_sigwinch ()
{
- char *t, *oldp;
+ 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)
{
- 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;
- if (term_clreol)
- tputs (term_clreol, 1, _rl_output_character_function);
+#if defined (__MSDOS__)
+ space_to_eol (_rl_screenwidth);
+ putc ('\r', rl_outstream);
+#else
+ 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;
- rl_display_prompt = ++t;
- rl_forced_update_display ();
- rl_display_prompt = oldp;
- }
+ 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;
+}
projects / platform / upstream / bash.git / blobdiff