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Add a helper function for cell data comparison, from Alexander Arch.

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This commit is contained in:
nicm 2024-10-25 07:57:49 +00:00
parent 354926a956
commit 63582c154c
1 changed files with 14 additions and 6 deletions
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20
grid-reader.c
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@ -338,6 +338,18 @@ grid_reader_cursor_previous_word(struct grid_reader *gr, const char *separators,
gr->cy = oldy;
}
/* Compare grid cell to UTF-8 data. Return 1 if equal, 0 if not. */
static int
grid_reader_cell_equals_data(const struct grid_cell *gc,
const struct utf8_data *ud)
{
if (gc->flags & GRID_FLAG_PADDING)
return (0);
if (gc->data.size != ud->size)
return (0);
return (memcmp(gc->data.data, ud->data, gc->data.size) == 0);
}
/* Jump forward to character. */
int
grid_reader_cursor_jump(struct grid_reader *gr, const struct utf8_data *jc)
@ -352,9 +364,7 @@ grid_reader_cursor_jump(struct grid_reader *gr, const struct utf8_data *jc)
xx = grid_line_length(gr->gd, py);
while (px < xx) {
grid_get_cell(gr->gd, px, py, &gc);
if (!(gc.flags & GRID_FLAG_PADDING) &&
gc.data.size == jc->size &&
memcmp(gc.data.data, jc->data, gc.data.size) == 0) {
if (grid_reader_cell_equals_data(&gc, jc)) {
gr->cx = px;
gr->cy = py;
return (1);
@ -382,9 +392,7 @@ grid_reader_cursor_jump_back(struct grid_reader *gr, const struct utf8_data *jc)
for (py = gr->cy + 1; py > 0; py--) {
for (px = xx; px > 0; px--) {
grid_get_cell(gr->gd, px - 1, py - 1, &gc);
if (!(gc.flags & GRID_FLAG_PADDING) &&
gc.data.size == jc->size &&
memcmp(gc.data.data, jc->data, gc.data.size) == 0) {
if (grid_reader_cell_equals_data(&gc, jc)) {
gr->cx = px - 1;
gr->cy = py - 1;
return (1);