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fix circus crx image original row type may not works

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lifegpc
2026-01-17 10:29:21 +08:00
parent b8387843b1
commit 3444c3ac65
1 changed files with 42 additions and 2 deletions
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44
src/scripts/circus/image/crx.rs
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@@ -1251,9 +1251,49 @@ impl Script for CrxImage {
if cur_pos >= buffer.len() {
return Err(anyhow::anyhow!("Row type offset exceeds buffer length"));
}
row_type.push(buffer[cur_pos]);
let cur_row_type = buffer[cur_pos];
row_type.push(cur_row_type);
let true_row_len = if cur_row_type < 4 {
row_len
} else {
let mut offset = cur_pos + 1;
for _ in 0..pixel_size {
let mut remaing = self.header.width;
let value = buffer[offset];
offset += 1;
remaing -= 1;
if remaing == 0 {
continue;
}
if value == buffer[offset] {
offset += 1;
let count = buffer[offset] as u16;
offset += 1;
remaing = remaing
.checked_sub(count)
.ok_or_else(|| anyhow::anyhow!("Row run-length overflow"))?;
}
while remaing > 0 {
let value = buffer[offset];
offset += 1;
remaing -= 1;
if remaing == 0 {
break;
}
if value == buffer[offset] {
offset += 1;
let count = buffer[offset] as u16;
offset += 1;
remaing = remaing
.checked_sub(count)
.ok_or_else(|| anyhow::anyhow!("Row run-length overflow"))?;
}
}
}
offset - cur_pos
};
cur_pos = cur_pos
.checked_add(row_len)
.checked_add(true_row_len)
.ok_or_else(|| anyhow::anyhow!("Row type offset overflow"))?;
}
Self::encode_image_origin(