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|
use super::*;
use anyhow::{bail, Context, Result};
use async_recursion::async_recursion;
use std::{collections::HashMap, path::Path};
pub const EXTENSION_METADATA: &str = "__extension__";
pub const PATH_METADATA: &str = "__path__";
pub async fn load_recursive_url(
loaders: &HashMap<String, String>,
path: &str,
) -> Result<Vec<(String, RagMetadata)>> {
let extension = RECURSIVE_URL_LOADER;
let loader_command = loaders
.get(extension)
.with_context(|| format!("Document loader '{extension}' not configured"))?;
let contents = run_loader_command(path, extension, loader_command)?;
let pages: Vec<WebPage> = serde_json::from_str(&contents).context(r#"The crawler response is invalid. It should follow the JSON format: `[{"path":"...", "text":"..."}]`."#)?;
let output = pages
.into_iter()
.map(|v| {
let WebPage { path, text } = v;
let mut metadata: RagMetadata = Default::default();
metadata.insert(PATH_METADATA.into(), path);
metadata.insert(EXTENSION_METADATA.into(), "md".into());
(text, metadata)
})
.collect();
Ok(output)
}
#[derive(Debug, Deserialize)]
struct WebPage {
path: String,
text: String,
}
pub async fn load_path(
loaders: &HashMap<String, String>,
path: &str,
) -> Result<Vec<(String, RagMetadata)>> {
let (path_str, suffixes) = parse_glob(path)?;
let suffixes = if suffixes.is_empty() {
None
} else {
Some(&suffixes)
};
let mut file_paths = vec![];
list_files(&mut file_paths, Path::new(&path_str), suffixes).await?;
let mut output = vec![];
let file_paths_len = file_paths.len();
match file_paths_len {
0 => {}
1 => output.push(load_file(loaders, &file_paths[0]).await?),
_ => {
for path in file_paths {
println!("🚀 Loading file {path}");
output.push(load_file(loaders, &path).await?)
}
println!("✨ Load directory completed");
}
}
Ok(output)
}
pub async fn load_file(
loaders: &HashMap<String, String>,
path: &str,
) -> Result<(String, RagMetadata)> {
let extension = get_extension(path);
match loaders.get(&extension) {
Some(loader_command) => load_with_command(path, &extension, loader_command),
None => load_plain(path, &extension).await,
}
}
pub async fn load_url(
loaders: &HashMap<String, String>,
path: &str,
) -> Result<(String, RagMetadata)> {
let (contents, extension) = fetch(loaders, path).await?;
let mut metadata: RagMetadata = Default::default();
metadata.insert(PATH_METADATA.into(), path.into());
metadata.insert(EXTENSION_METADATA.into(), extension);
Ok((contents, metadata))
}
async fn load_plain(path: &str, extension: &str) -> Result<(String, RagMetadata)> {
let contents = tokio::fs::read_to_string(path).await?;
let mut metadata: RagMetadata = Default::default();
metadata.insert(PATH_METADATA.into(), path.to_string());
metadata.insert(EXTENSION_METADATA.into(), extension.to_string());
Ok((contents, metadata))
}
fn load_with_command(
path: &str,
extension: &str,
loader_command: &str,
) -> Result<(String, RagMetadata)> {
let contents = run_loader_command(path, extension, loader_command)?;
let mut metadata: RagMetadata = Default::default();
metadata.insert(PATH_METADATA.into(), path.to_string());
metadata.insert(EXTENSION_METADATA.into(), DEFAULT_EXTENSION.to_string());
Ok((contents, metadata))
}
pub fn parse_glob(path_str: &str) -> Result<(String, Vec<String>)> {
if let Some(start) = path_str.find("/**/*.").or_else(|| path_str.find(r"\**\*.")) {
let base_path = path_str[..start].to_string();
if let Some(curly_brace_end) = path_str[start..].find('}') {
let end = start + curly_brace_end;
let extensions_str = &path_str[start + 6..end + 1];
let extensions = if extensions_str.starts_with('{') && extensions_str.ends_with('}') {
extensions_str[1..extensions_str.len() - 1]
.split(',')
.map(|s| s.to_string())
.collect::<Vec<String>>()
} else {
bail!("Invalid path '{path_str}'");
};
Ok((base_path, extensions))
} else {
let extensions_str = &path_str[start + 6..];
let extensions = vec![extensions_str.to_string()];
Ok((base_path, extensions))
}
} else if path_str.ends_with("/**") || path_str.ends_with(r"\**") {
Ok((path_str[0..path_str.len() - 3].to_string(), vec![]))
} else {
Ok((path_str.to_string(), vec![]))
}
}
#[async_recursion]
pub async fn list_files(
files: &mut Vec<String>,
entry_path: &Path,
suffixes: Option<&Vec<String>>,
) -> Result<()> {
if !entry_path.exists() {
bail!("Not found: {:?}", entry_path);
}
if entry_path.is_file() {
add_file(files, suffixes, entry_path);
return Ok(());
}
if !entry_path.is_dir() {
bail!("Not a directory: {:?}", entry_path);
}
let mut reader = tokio::fs::read_dir(entry_path).await?;
while let Some(entry) = reader.next_entry().await? {
let path = entry.path();
if path.is_file() {
add_file(files, suffixes, &path);
} else if path.is_dir() {
list_files(files, &path, suffixes).await?;
}
}
Ok(())
}
fn add_file(files: &mut Vec<String>, suffixes: Option<&Vec<String>>, path: &Path) {
if is_valid_extension(suffixes, path) {
files.push(path.display().to_string());
}
}
fn is_valid_extension(suffixes: Option<&Vec<String>>, path: &Path) -> bool {
if let Some(suffixes) = suffixes {
if !suffixes.is_empty() {
if let Some(extension) = path.extension().map(|v| v.to_string_lossy().to_string()) {
return suffixes.contains(&extension);
}
return false;
}
}
true
}
fn get_extension(path: &str) -> String {
Path::new(&path)
.extension()
.map(|v| v.to_string_lossy().to_lowercase())
.unwrap_or_else(|| DEFAULT_EXTENSION.to_string())
}
#[cfg(test)]
mod tests {
use super::*;
#[test]
fn test_parse_glob() {
assert_eq!(parse_glob("dir").unwrap(), ("dir".into(), vec![]));
assert_eq!(parse_glob("dir/**").unwrap(), ("dir".into(), vec![]));
assert_eq!(
parse_glob("dir/file.md").unwrap(),
("dir/file.md".into(), vec![])
);
assert_eq!(
parse_glob("dir/**/*.md").unwrap(),
("dir".into(), vec!["md".into()])
);
assert_eq!(
parse_glob("dir/**/*.{md,txt}").unwrap(),
("dir".into(), vec!["md".into(), "txt".into()])
);
assert_eq!(
parse_glob("C:\\dir\\**\\*.{md,txt}").unwrap(),
("C:\\dir".into(), vec!["md".into(), "txt".into()])
);
}
}
|
