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Avoid double scan of output to look for escape codes

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Kovid Goyal
2022-02-13 17:33:13 +05:30
parent 8d4772f804
commit e06b774174
3 changed files with 8 additions and 9 deletions
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10
kitty/line.c
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@@ -302,17 +302,18 @@ write_hyperlink(hyperlink_id_type hid, ANSIBuf *output) {
}
void
bool
line_as_ansi(Line *self, ANSIBuf *output, const GPUCell** prev_cell, index_type start_at, index_type stop_before, char_type prefix_char) {
#define ENSURE_SPACE(extra) ensure_space_for(output, buf, Py_UCS4, output->len + extra, capacity, 2048, false);
#define WRITE_SGR(val) { ENSURE_SPACE(128); write_sgr(val, output); }
#define WRITE_SGR(val) { ENSURE_SPACE(128); escape_code_written = true; write_sgr(val, output); }
#define WRITE_CH(val) { ENSURE_SPACE(1); output->buf[output->len++] = val; }
#define WRITE_HYPERLINK(val) { ENSURE_SPACE(2256); write_hyperlink(val, output); }
#define WRITE_HYPERLINK(val) { ENSURE_SPACE(2256); escape_code_written = true; write_hyperlink(val, output); }
bool escape_code_written = false;
output->len = 0;
index_type limit = MIN(stop_before, xlimit_for_line(self));
char_type previous_width = 0;
if (prefix_char) { WRITE_CH(prefix_char); previous_width = wcwidth_std(prefix_char); }
if (limit <= start_at) return;
if (limit <= start_at) return escape_code_written;
static const GPUCell blank_cell = { 0 };
GPUCell *cell;
@@ -354,6 +355,7 @@ line_as_ansi(Line *self, ANSIBuf *output, const GPUCell** prev_cell, index_type
}
previous_width = cell->attrs.width;
}
return escape_code_written;
#undef CMP_ATTRS
#undef CMP
#undef WRITE_SGR