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less duplication

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This commit is contained in:
phiresky 2022-11-05 01:01:05 +01:00
parent be0b78a072
commit 937b1a81ac
1 changed files with 46 additions and 40 deletions
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86
src/preproc.rs
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@ -14,7 +14,7 @@ use async_stream::stream;
use log::*;
use path_clean::PathClean;
use std::sync::Arc;
// use postproc::PostprocPrefix;
use postproc::PostprocPrefix;
use std::convert::TryInto;
use std::io::Cursor;
use std::path::Path;
@ -52,12 +52,11 @@ async fn choose_adapter(
Ok(adapter.map(|e| (e.0, e.1, active_adapters)))
}
async fn buf_choose_adapter(
ai: AdaptInfo,
) -> Result<(
AdaptInfo,
Option<(Arc<dyn FileAdapter>, FileMatcher, ActiveAdapters)>,
)> {
enum Ret {
Recurse(AdaptInfo, Arc<dyn FileAdapter>, FileMatcher, ActiveAdapters),
Passthrough(AdaptInfo),
}
async fn buf_choose_adapter(ai: AdaptInfo) -> Result<Ret> {
let mut inp = BufReader::with_capacity(1 << 16, ai.inp);
let adapter = choose_adapter(
&ai.config,
@ -66,36 +65,39 @@ async fn buf_choose_adapter(
&mut inp,
)
.await?;
let (a, b, c) = match adapter {
Some(x) => x,
None => {
// allow passthrough if the file is in an archive or accurate matching is enabled
// otherwise it should have been filtered out by rg pre-glob since rg can handle those better than us
let allow_cat = !ai.is_real_file || ai.config.accurate;
if allow_cat {
if ai.postprocess {
(
Arc::new(PostprocPrefix {}) as Arc<dyn FileAdapter>,
FileMatcher::Fast(FastFileMatcher::FileExtension("default".to_string())),
Vec::new(),
)
} else {
return Ok(Ret::Passthrough(ai));
}
} else {
return Err(format_err!(
"No adapter found for file {:?}, passthrough disabled.",
ai.filepath_hint
.file_name()
.ok_or_else(|| format_err!("Empty filename"))?
));
}
}
};
let ai = AdaptInfo {
inp: Box::pin(inp),
..ai
};
Ok((ai, adapter))
Ok(Ret::Recurse(ai, a, b, c))
}
fn handle_no_adapter(ai: AdaptInfo) -> Result<AdaptInfo> {
// allow passthrough if the file is in an archive or accurate matching is enabled
// otherwise it should have been filtered out by rg pre-glob since rg can handle those better than us
let allow_cat = !ai.is_real_file || ai.config.accurate;
if allow_cat {
if ai.postprocess {
panic!("not implemented");
/* (
Rc::new(PostprocPrefix {}) as Arc<dyn FileAdapter>,
FileMatcher::Fast(FastFileMatcher::FileExtension("default".to_string())), // todo: separate enum value for this
)*/
} else {
return Ok(ai);
}
} else {
return Err(format_err!(
"No adapter found for file {:?}, passthrough disabled.",
ai.filepath_hint
.file_name()
.ok_or_else(|| format_err!("Empty filename"))?
));
}
}
/**
* preprocess a file as defined in `ai`.
*
@ -111,9 +113,11 @@ pub async fn rga_preproc(ai: AdaptInfo) -> Result<ReadBox> {
// todo: figure out when using a bufreader is a good idea and when it is not
// seems to be good for File::open() reads, but not sure about within archives (tar, zip)
let (ai, adapter) = buf_choose_adapter(ai).await?;
let Some((adapter, detection_reason, active_adapters)) = adapter else {
return handle_no_adapter(ai).map(|ai| ai.inp);
let (ai, adapter, detection_reason, active_adapters) = match buf_choose_adapter(ai).await? {
Ret::Recurse(ai, a, b, c) => (ai, a, b, c),
Ret::Passthrough(ai) => {
return Ok(ai.inp);
}
};
let path_hint_copy = ai.filepath_hint.clone();
adapt_caching(ai, adapter, detection_reason, active_adapters)
@ -227,13 +231,15 @@ fn loop_adapt(
let s = stream! {
for await file in inp {
let (file, chosen_adapter) = buf_choose_adapter(file).await.expect("todo: handle");
if let Some((adapter, detection_reason, active_adapters)) = chosen_adapter {
for await file in loop_adapt(adapter.as_ref(), detection_reason, file).expect("todo: handle") {
yield file;
match buf_choose_adapter(file).await.expect("todo: handle") {
Ret::Recurse(ai, adapter, detection_reason, active_adapters) => {
for await file in loop_adapt(adapter.as_ref(), detection_reason, file).expect("todo: handle") {
yield file;
}
}
Ret::Passthrough(ai) => {
yield ai;
}
} else {
yield handle_no_adapter(file).expect("todo: handle");
}
}
};