149 lines
4.0 KiB
Rust
149 lines
4.0 KiB
Rust
use std::{
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fs, io,
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os::unix,
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path::{Path, PathBuf},
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};
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use crate::{Mod, ModFile, fomod::FileTypeEnum};
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pub struct Linker {
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target: PathBuf,
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game_dir: PathBuf,
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}
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impl Linker {
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pub fn new(target_path: &Path, game_dir: &Path) -> Self {
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Self {
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target: target_path.to_owned(),
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game_dir: game_dir.to_owned(),
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}
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}
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fn link_file(&self, from: &Path, to: &Path) -> Result<(), LinkerError> {
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let target = self.target.join(to);
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if let Some(parent) = target.parent() {
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fs::create_dir_all(parent)?;
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}
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create_symlink_for_file(from, &target)?;
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Ok(())
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}
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fn link_recursive(&self, from: &Path, to: &Path) -> Result<(), LinkerError> {
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for entry in fs::read_dir(from)? {
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let entry = entry?;
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let entry_path = entry.path();
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let relative = entry_path
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.strip_prefix(from)
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.map_err(|e| io::Error::new(io::ErrorKind::InvalidInput, e))?;
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let target_path = to.join(relative);
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if entry_path.is_dir() {
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self.link_recursive(&entry_path, &target_path)?;
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} else {
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self.link_file(&entry_path, &target_path)?;
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}
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}
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Ok(())
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}
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pub fn link_mod_file(&self, file: &ModFile, from_mod: &Mod) -> Result<(), LinkerError> {
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let src = from_mod.source.join(&file.source);
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self.link_file(&src, &file.dest)
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}
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pub fn link_plugin_files(
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&self,
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entries: &[FileTypeEnum],
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mod_dir: &Path,
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) -> Result<(), LinkerError> {
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let mut sorted_entries = entries.to_owned();
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sorted_entries.sort_by_cached_key(|e| match e {
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FileTypeEnum::File(file_type) => file_type.priority.unwrap_or(0),
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FileTypeEnum::Folder(file_type) => file_type.priority.unwrap_or(0),
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});
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for entry in sorted_entries {
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match entry {
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FileTypeEnum::File(file) => {
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let from = mod_dir.join(file.source);
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let to = Path::new("Data").join(file.destination.unwrap_or("".to_owned()));
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self.link_file(&from, &to)?;
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}
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FileTypeEnum::Folder(folder) => {
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let from = mod_dir.join(folder.source);
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let to = Path::new("Data").join(folder.destination.unwrap_or("".to_owned()));
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self.link_recursive(&from, &to)?;
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}
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}
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}
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Ok(())
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}
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pub fn link_install_to_target(&self) -> Result<(), LinkerError> {
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fn symlink_tree(src: &Path, dst: &Path) -> Result<(), LinkerError> {
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if !dst.exists() {
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fs::create_dir_all(dst)?;
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}
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for entry in fs::read_dir(src)? {
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let entry = entry?;
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let src_path = entry.path();
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let dst_path = dst.join(entry.path().file_name().unwrap());
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let meta = entry.metadata()?;
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if meta.is_dir() {
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symlink_tree(&src_path, &dst_path)?;
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} else if meta.is_file() {
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create_symlink_for_file(&src_path, &dst_path)?;
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}
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}
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Ok(())
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}
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symlink_tree(&self.game_dir, &self.target)?;
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Ok(())
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}
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}
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#[derive(Debug)]
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pub enum LinkerError {
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Io(io::Error),
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}
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impl std::fmt::Display for LinkerError {
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fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
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match self {
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Self::Io(e) => write!(f, "IO error: {}", e),
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}
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}
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}
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impl std::error::Error for LinkerError {}
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impl From<io::Error> for LinkerError {
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fn from(e: io::Error) -> Self {
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Self::Io(e)
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}
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}
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fn create_symlink_for_file(src: &Path, dst: &Path) -> io::Result<()> {
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let absolute_path = fs::canonicalize(src)?;
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#[cfg(unix)]
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{
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unix::fs::symlink(absolute_path, dst)
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}
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#[cfg(windows)]
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{
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std::os::windows::fs::symlink_file(src, dst)
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}
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}
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