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Simplify character replacement on non-UTF-8 terminals and make a common

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function.
This commit is contained in:
nicm 2018-01-12 16:41:00 +00:00
parent c03565611e
commit 2c5a6f9af5
1 changed files with 46 additions and 44 deletions
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90
tty.c
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@ -878,12 +878,37 @@ tty_draw_pane(struct tty *tty, const struct window_pane *wp, u_int py, u_int ox,
tty_draw_line(tty, wp, wp->screen, py, ox, oy);
}
static const struct grid_cell *
tty_check_codeset(struct tty *tty, const struct grid_cell *gc)
{
static struct grid_cell new;
u_int n;
/* Characters less than 0x7f are always fine, no matter what. */
if (gc->data.size == 1 && *gc->data.data < 0x7f)
return (gc);
/* UTF-8 terminal and a UTF-8 character - fine. */
if (tty->flags & TTY_UTF8)
return (gc);
/* Replace by the right number of underscores. */
n = gc->data.width;
if (n > UTF8_SIZE)
n = UTF8_SIZE;
memcpy(&new, gc, sizeof new);
new.data.size = n;
memset(new.data.data, '_', n);
return (&new);
}
void
tty_draw_line(struct tty *tty, const struct window_pane *wp,
struct screen *s, u_int py, u_int ox, u_int oy)
{
struct grid *gd = s->grid;
struct grid_cell gc, last;
const struct grid_cell *gcp;
u_int i, j, ux, sx, nx, width;
int flags, cleared = 0;
char buf[512];
@ -934,18 +959,15 @@ tty_draw_line(struct tty *tty, const struct window_pane *wp,
for (i = 0; i < sx; i++) {
grid_view_get_cell(gd, i, py, &gc);
gcp = tty_check_codeset(tty, &gc);
if (len != 0 &&
(((~tty->flags & TTY_UTF8) &&
(gc.data.size != 1 ||
*gc.data.data >= 0x7f ||
gc.data.width != 1)) ||
(gc.attr & GRID_ATTR_CHARSET) ||
gc.flags != last.flags ||
gc.attr != last.attr ||
gc.fg != last.fg ||
gc.bg != last.bg ||
ux + width + gc.data.width >= screen_size_x(s) ||
(sizeof buf) - len < gc.data.size)) {
((gcp->attr & GRID_ATTR_CHARSET) ||
gcp->flags != last.flags ||
gcp->attr != last.attr ||
gcp->fg != last.fg ||
gcp->bg != last.bg ||
ux + width + gcp->data.width >= screen_size_x(s) ||
(sizeof buf) - len < gcp->data.size)) {
tty_attributes(tty, &last, wp);
tty_putn(tty, buf, len, width);
ux += width;
@ -954,35 +976,21 @@ tty_draw_line(struct tty *tty, const struct window_pane *wp,
width = 0;
}
if (gc.flags & GRID_FLAG_SELECTED)
if (gcp->flags & GRID_FLAG_SELECTED)
screen_select_cell(s, &last, &gc);
else
memcpy(&last, &gc, sizeof last);
if (ux + gc.data.width > screen_size_x(s))
for (j = 0; j < gc.data.width; j++) {
if (ux + gcp->data.width > screen_size_x(s))
for (j = 0; j < gcp->data.width; j++) {
if (ux + j > screen_size_x(s))
break;
tty_putc(tty, ' ');
ux++;
}
else if (((~tty->flags & TTY_UTF8) &&
(gc.data.size != 1 ||
*gc.data.data >= 0x7f ||
gc.data.width != 1)) ||
(gc.attr & GRID_ATTR_CHARSET)) {
tty_attributes(tty, &last, wp);
if (~tty->flags & TTY_UTF8) {
for (j = 0; j < gc.data.width; j++)
tty_putc(tty, '_');
} else {
for (j = 0; j < gc.data.size; j++)
tty_putc(tty, gc.data.data[j]);
}
ux += gc.data.width;
} else {
memcpy(buf + len, gc.data.data, gc.data.size);
len += gc.data.size;
width += gc.data.width;
else {
memcpy(buf + len, gcp->data.data, gcp->data.size);
len += gcp->data.size;
width += gcp->data.width;
}
}
if (len != 0) {
@ -1409,7 +1417,7 @@ static void
tty_cell(struct tty *tty, const struct grid_cell *gc,
const struct window_pane *wp)
{
u_int i;
const struct grid_cell *gcp;
/* Skip last character if terminal is stupid. */
if ((tty->term->flags & TERM_EARLYWRAP) &&
@ -1425,22 +1433,16 @@ tty_cell(struct tty *tty, const struct grid_cell *gc,
tty_attributes(tty, gc, wp);
/* Get the cell and if ASCII write with putc to do ACS translation. */
if (gc->data.size == 1) {
if (*gc->data.data < 0x20 || *gc->data.data == 0x7f)
gcp = tty_check_codeset(tty, gc);
if (gcp->data.size == 1) {
if (*gcp->data.data < 0x20 || *gcp->data.data == 0x7f)
return;
tty_putc(tty, *gc->data.data);
return;
}
/* If not UTF-8, write _. */
if (!(tty->flags & TTY_UTF8)) {
for (i = 0; i < gc->data.width; i++)
tty_putc(tty, '_');
tty_putc(tty, *gcp->data.data);
return;
}
/* Write the data. */
tty_putn(tty, gc->data.data, gc->data.size, gc->data.width);
tty_putn(tty, gcp->data.data, gcp->data.size, gcp->data.width);
}
void