/* re_addc():
* Draw c, expanding tabs, control chars etc.
*/
static void
re_addc(EditLine *el, wint_t c)
{
switch (ct_chr_class(c)) {
case CHTYPE_TAB: /* expand the tab */
for (;;) {
re_putc(el, ' ', 1);
if ((el->el_refresh.r_cursor.h & 07) == 0)
break; /* go until tab stop */
}
break;
case CHTYPE_NL: {
int oldv = el->el_refresh.r_cursor.v;
re_putc(el, '\0', 0); /* assure end of line */
if (oldv == el->el_refresh.r_cursor.v) /* XXX */
re_nextline(el);
break;
}
case CHTYPE_PRINT:
re_putc(el, c, 1);
break;
default: {
wchar_t visbuf[VISUAL_WIDTH_MAX];
ssize_t i, n =
ct_visual_char(visbuf, VISUAL_WIDTH_MAX, c);
for (i = 0; n-- > 0; ++i)
re_putc(el, visbuf[i], 1);
break;
}
}
}
/* re_putc():
* Draw the character given
*/
libedit_private void
re_putc(EditLine *el, wint_t c, int shift)
{
coord_t *cur = &el->el_refresh.r_cursor;
int i, w = wcwidth(c);
int sizeh = el->el_terminal.t_size.h;
ELRE_DEBUG(1, (__F, "printing %5x '%lc'\r\n", c, c));
if (w == -1)
w = 0;
while (shift && (cur->h + w > sizeh))
re_putc(el, ' ', 1);
el->el_vdisplay[cur->v][cur->h] = c;
/* assumes !shift is only used for single-column chars */
i = w;
while (--i > 0)
el->el_vdisplay[cur->v][cur->h + i] = MB_FILL_CHAR;
if (!shift)
return;
cur->h += w; /* advance to next place */
if (cur->h >= sizeh) {
/* assure end of line */
el->el_vdisplay[cur->v][sizeh] = '\0';
re_nextline(el);
}
}
/* re_refresh():
* draws the new virtual screen image from the current input
* line, then goes line-by-line changing the real image to the new
* virtual image. The routine to re-draw a line can be replaced
* easily in hopes of a smarter one being placed there.
*/
libedit_private void
re_refresh(EditLine *el)
{
int i, rhdiff;
wchar_t *cp, *st;
coord_t cur;
#ifdef notyet
size_t termsz;
#endif
ELRE_DEBUG(1, (__F, "el->el_line.buffer = :%ls:\r\n",
el->el_line.buffer));
literal_clear(el);
/* reset the Drawing cursor */
el->el_refresh.r_cursor.h = 0;
el->el_refresh.r_cursor.v = 0;
terminal_move_to_char(el, 0);
/* temporarily draw rprompt to calculate its size */
prompt_print(el, EL_RPROMPT);
/* reset the Drawing cursor */
el->el_refresh.r_cursor.h = 0;
el->el_refresh.r_cursor.v = 0;
if (el->el_line.cursor >= el->el_line.lastchar) {
if (el->el_map.current == el->el_map.alt
&& el->el_line.lastchar != el->el_line.buffer)
el->el_line.cursor = el->el_line.lastchar - 1;
else
el->el_line.cursor = el->el_line.lastchar;
}
cur.h = -1; /* set flag in case I'm not set */
cur.v = 0;
prompt_print(el, EL_PROMPT);
/* draw the current input buffer */
#if notyet
termsz = el->el_terminal.t_size.h * el->el_terminal.t_size.v;
if (el->el_line.lastchar - el->el_line.buffer > termsz) {
/*
* If line is longer than terminal, process only part
* of line which would influence display.
*/
size_t rem = (el->el_line.lastchar-el->el_line.buffer)%termsz;
st = el->el_line.lastchar - rem
- (termsz - (((rem / el->el_terminal.t_size.v) - 1)
* el->el_terminal.t_size.v));
} else
#endif
st = el->el_line.buffer;
for (cp = st; cp < el->el_line.lastchar; cp++) {
if (cp == el->el_line.cursor) {
int w = wcwidth(*cp);
/* save for later */
cur.h = el->el_refresh.r_cursor.h;
cur.v = el->el_refresh.r_cursor.v;
/* handle being at a linebroken doublewidth char */
if (w > 1 && el->el_refresh.r_cursor.h + w >
el->el_terminal.t_size.h) {
cur.h = 0;
cur.v++;
}
}
re_addc(el, *cp);
}
if (cur.h == -1) { /* if I haven't been set yet, I'm at the end */
cur.h = el->el_refresh.r_cursor.h;
cur.v = el->el_refresh.r_cursor.v;
}
rhdiff = el->el_terminal.t_size.h - el->el_refresh.r_cursor.h -
el->el_rprompt.p_pos.h;
if (el->el_rprompt.p_pos.h && !el->el_rprompt.p_pos.v &&
!el->el_refresh.r_cursor.v && rhdiff > 1) {
/*
* have a right-hand side prompt that will fit
* on the end of the first line with at least
* one character gap to the input buffer.
*/
while (--rhdiff > 0) /* pad out with spaces */
re_putc(el, ' ', 1);
prompt_print(el, EL_RPROMPT);
} else {
el->el_rprompt.p_pos.h = 0; /* flag "not using rprompt" */
el->el_rprompt.p_pos.v = 0;
}
re_putc(el, '\0', 0); /* make line ended with NUL, no cursor shift */
el->el_refresh.r_newcv = el->el_refresh.r_cursor.v;
ELRE_DEBUG(1, (__F,
"term.h=%d vcur.h=%d vcur.v=%d vdisplay[0]=\r\n:%80.80s:\r\n",
el->el_terminal.t_size.h, el->el_refresh.r_cursor.h,
el->el_refresh.r_cursor.v, ct_encode_string(el->el_vdisplay[0],
&el->el_scratch)));
ELRE_DEBUG(1, (__F, "updating %d lines.\r\n", el->el_refresh.r_newcv));
for (i = 0; i <= el->el_refresh.r_newcv; i++) {
/* NOTE THAT re_update_line MAY CHANGE el_display[i] */
re_update_line(el, el->el_display[i], el->el_vdisplay[i], i);
/*
* Copy the new line to be the current one, and pad out with
* spaces to the full width of the terminal so that if we try
* moving the cursor by writing the character that is at the
* end of the screen line, it won't be a NUL or some old
* leftover stuff.
*/
re__copy_and_pad(el->el_display[i], el->el_vdisplay[i],
(size_t) el->el_terminal.t_size.h);
}
ELRE_DEBUG(1, (__F,
"\r\nel->el_refresh.r_cursor.v=%d,el->el_refresh.r_oldcv=%d i=%d\r\n",
el->el_refresh.r_cursor.v, el->el_refresh.r_oldcv, i));
if (el->el_refresh.r_oldcv > el->el_refresh.r_newcv)
for (; i <= el->el_refresh.r_oldcv; i++) {
terminal_move_to_line(el, i);
terminal_move_to_char(el, 0);
/* This wcslen should be safe even with MB_FILL_CHARs */
terminal_clear_EOL(el, (int) wcslen(el->el_display[i]));
#ifdef DEBUG_REFRESH
terminal_overwrite(el, L"C\b", 2);
#endif /* DEBUG_REFRESH */
el->el_display[i][0] = '\0';
}
el->el_refresh.r_oldcv = el->el_refresh.r_newcv; /* set for next time */
ELRE_DEBUG(1, (__F,
"\r\ncursor.h = %d, cursor.v = %d, cur.h = %d, cur.v = %d\r\n",
el->el_refresh.r_cursor.h, el->el_refresh.r_cursor.v,
cur.h, cur.v));
terminal_move_to_line(el, cur.v); /* go to where the cursor is */
terminal_move_to_char(el, cur.h);
}
