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cell: we only need 4 bytes for the longest utf8 sequence

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We don't *have* to NULL-terminate the utf8 string. So don't. This
makes the cell glyph 4 bytes exactly, which is better for alignment
and cache usage.
This commit is contained in:
Daniel Eklöf 2019-07-10 18:47:32 +02:00
parent cf71534768
commit b1f8dd75d6
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GPG key ID: 5BBD4992C116573F
3 changed files with 3 additions and 3 deletions
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2
render.c
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@ -101,7 +101,7 @@ render_cell(struct terminal *term, struct buffer *buf, const struct cell *cell,
cairo_status_t status = cairo_scaled_font_text_to_glyphs(
attrs_to_font(term, &cell->attrs), x, y + term->fextents.ascent,
cell->c, strlen(cell->c), &gseq.g, &new_glyphs,
cell->c, strnlen(cell->c, 4), &gseq.g, &new_glyphs,
NULL, NULL, NULL);
if (status != CAIRO_STATUS_SUCCESS)

2
terminal.h
View file

@ -68,7 +68,7 @@ struct attributes {
struct cell {
struct attributes attrs;
char c[5];
char c[4];
} __attribute__((packed));
struct scroll_region {

2
vt.c
View file

@ -757,7 +757,7 @@ action_print(struct terminal *term, uint8_t c)
if (unlikely(term->charset[term->selected_charset] == CHARSET_GRAPHIC) &&
c >= 0x41 && c <= 0x7e)
{
strcpy(cell->c, vt100_0[c - 0x41]);
strncpy(cell->c, vt100_0[c - 0x41], sizeof(cell->c));
} else {
//LOG_DBG("print: ASCII: %c", c);
cell->c[0] = c;