use crate::parser::IncludeResolver;
use std::fs;
use std::path::{Path, PathBuf};
pub struct FsIncludeResolver;
impl IncludeResolver for FsIncludeResolver {
fn resolve(
&mut self,
parent_path: Option<&str>,
path: &str,
) -> crate::error::ParserResult<(String, String)> {
let parent = parent_path.map(Path::new).unwrap_or_else(|| Path::new("."));
let base = parent.parent().unwrap_or_else(|| Path::new("."));
let resolved_path = normalize_path(&base.join(path));
if !resolved_path.is_file() {
return Err(crate::error::ParseError::Message(format!(
"include path '{}' does not exist",
resolved_path.display()
)));
}
let content = fs::read_to_string(&resolved_path).map_err(|err| {
crate::error::ParseError::Message(format!(
"failed to read include '{}': {err}",
resolved_path.display()
))
})?;
Ok((resolved_path.display().to_string(), content))
}
}
pub(crate) fn normalize_path(path: &Path) -> PathBuf {
let path = if path.is_absolute() {
path.to_path_buf()
} else {
std::env::current_dir()
.unwrap_or_else(|_| PathBuf::from("."))
.join(path)
};
fs::canonicalize(&path).unwrap_or(path)
}