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fixup! Implement async postproc_pagebreaks

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Joseph LaFreniere 2022-12-22 16:45:53 -06:00
parent af168efe1a
commit f19e173585
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1 changed files with 6 additions and 6 deletions
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src/adapters/postproc.rs
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@ -149,22 +149,22 @@ pub fn postproc_prefix(line_prefix: &str, inp: impl AsyncRead + Send) -> impl As
pub fn postproc_pagebreaks(line_prefix: &str, inp: impl AsyncRead) -> impl AsyncRead { pub fn postproc_pagebreaks(line_prefix: &str, inp: impl AsyncRead) -> impl AsyncRead {
let form_feed = b'\x0c'; let form_feed = b'\x0c';
let regex = regex::bytes::Regex::new("\n").unwrap(); let regex = regex::bytes::Regex::new("\n").unwrap();
let mut page_count = 0; let mut page_count = 1;
let mut line_prefix = format!("\n{}Page {}:", line_prefix, page_count + 1); let mut line_prefix = format!("\n{}Page {}:", line_prefix, page_count);
let inp_stream = ReaderStream::new(inp); let inp_stream = ReaderStream::new(inp);
let oup_stream = stream! { let oup_stream = stream! {
yield Ok(Bytes::copy_from_slice(line_prefix.as_bytes()));
for await chunk in inp_stream { for await chunk in inp_stream {
match chunk { match chunk {
Err(e) => yield Err(e), Err(e) => yield Err(e),
Ok(chunk) => { Ok(chunk) => {
let chunk_iter = chunk.split(|byte| byte == &form_feed); let chunk_iter = chunk.split_inclusive(|byte| byte == &form_feed);
for sub_chunk in chunk_iter { for sub_chunk in chunk_iter {
if sub_chunk.contains(&b'\n') { if sub_chunk == [form_feed] {
yield Ok(Bytes::copy_from_slice(&regex.replace_all(&sub_chunk, line_prefix.as_bytes())));
page_count += 1; page_count += 1;
line_prefix = format!("\n{}Page {}:", line_prefix, page_count); line_prefix = format!("\n{}Page {}:", line_prefix, page_count);
} else {
yield Ok(Bytes::copy_from_slice(&regex.replace_all(&sub_chunk, line_prefix.as_bytes())));
} }
} }
} }