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use alloc::vec::Vec;
use core::cell::RefCell;
use serde::{Deserialize, Serialize};
#[cfg(feature = "std")]
use std::{fs, fs::File, io::Write, path::PathBuf};
use crate::{corpus::Corpus, corpus::Testcase, inputs::Input, state::HasMetadata, Error};
#[cfg(feature = "std")]
#[derive(Debug, Clone, Serialize, Deserialize)]
pub enum OnDiskMetadataFormat {
Postcard,
Json,
JsonPretty,
}
#[cfg(feature = "std")]
#[derive(Default, Serialize, Deserialize, Clone, Debug)]
#[serde(bound = "I: serde::de::DeserializeOwned")]
pub struct OnDiskCorpus<I>
where
I: Input,
{
entries: Vec<RefCell<Testcase<I>>>,
current: Option<usize>,
dir_path: PathBuf,
meta_format: Option<OnDiskMetadataFormat>,
}
impl<I> Corpus<I> for OnDiskCorpus<I>
where
I: Input,
{
#[inline]
fn count(&self) -> usize {
self.entries.len()
}
#[inline]
fn add(&mut self, mut testcase: Testcase<I>) -> Result<usize, Error> {
if testcase.filename().is_none() {
let filename = self.dir_path.join(
testcase
.input()
.as_ref()
.unwrap()
.generate_name(self.entries.len()),
);
let filename_str = filename.to_str().expect("Invalid Path");
testcase.set_filename(filename_str.into());
};
if self.meta_format.is_some() {
let filename = testcase.filename().as_ref().unwrap().clone() + ".metadata";
let mut file = File::create(filename)?;
let serialized = match self.meta_format.as_ref().unwrap() {
OnDiskMetadataFormat::Postcard => postcard::to_allocvec(testcase.metadata())?,
OnDiskMetadataFormat::Json => serde_json::to_vec(testcase.metadata())?,
OnDiskMetadataFormat::JsonPretty => serde_json::to_vec_pretty(testcase.metadata())?,
};
file.write_all(&serialized)?;
}
testcase
.store_input()
.expect("Could not save testcase to disk");
self.entries.push(RefCell::new(testcase));
Ok(self.entries.len() - 1)
}
#[inline]
fn replace(&mut self, idx: usize, testcase: Testcase<I>) -> Result<(), Error> {
if idx >= self.entries.len() {
return Err(Error::KeyNotFound(format!("Index {} out of bounds", idx)));
}
self.entries[idx] = RefCell::new(testcase);
Ok(())
}
#[inline]
fn remove(&mut self, idx: usize) -> Result<Option<Testcase<I>>, Error> {
if idx >= self.entries.len() {
Ok(None)
} else {
Ok(Some(self.entries.remove(idx).into_inner()))
}
}
#[inline]
fn get(&self, idx: usize) -> Result<&RefCell<Testcase<I>>, Error> {
Ok(&self.entries[idx])
}
#[inline]
fn current(&self) -> &Option<usize> {
&self.current
}
#[inline]
fn current_mut(&mut self) -> &mut Option<usize> {
&mut self.current
}
}
impl<I> OnDiskCorpus<I>
where
I: Input,
{
pub fn new(dir_path: PathBuf) -> Result<Self, Error> {
fs::create_dir_all(&dir_path)?;
Ok(Self {
entries: vec![],
current: None,
dir_path,
meta_format: None,
})
}
pub fn new_save_meta(
dir_path: PathBuf,
meta_format: Option<OnDiskMetadataFormat>,
) -> Result<Self, Error> {
fs::create_dir_all(&dir_path)?;
Ok(Self {
entries: vec![],
current: None,
dir_path,
meta_format,
})
}
}