63 lines
2.0 KiB
Rust
63 lines
2.0 KiB
Rust
// pathfinder/resources/src/fs.rs
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//
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// Copyright © 2020 The Pathfinder Project Developers.
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//
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// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
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// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
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// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
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// option. This file may not be copied, modified, or distributed
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// except according to those terms.
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//! Reads resources from the filesystem.
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use crate::ResourceLoader;
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use std::env;
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use std::fs::File;
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use std::io::{Error as IOError, Read};
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use std::path::PathBuf;
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pub struct FilesystemResourceLoader {
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pub directory: PathBuf,
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}
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impl FilesystemResourceLoader {
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pub fn locate() -> FilesystemResourceLoader {
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let mut parent_directory = env::current_dir().unwrap();
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loop {
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// So ugly :(
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let mut resources_directory = parent_directory.clone();
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resources_directory.push("resources");
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if resources_directory.is_dir() {
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let mut shaders_directory = resources_directory.clone();
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let mut textures_directory = resources_directory.clone();
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shaders_directory.push("shaders");
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textures_directory.push("textures");
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if shaders_directory.is_dir() && textures_directory.is_dir() {
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return FilesystemResourceLoader {
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directory: resources_directory,
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};
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}
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}
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if !parent_directory.pop() {
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break;
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}
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}
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panic!("No suitable `resources/` directory found!");
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}
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}
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impl ResourceLoader for FilesystemResourceLoader {
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fn slurp(&self, virtual_path: &str) -> Result<Vec<u8>, IOError> {
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let mut path = self.directory.clone();
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virtual_path
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.split('/')
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.for_each(|segment| path.push(segment));
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let mut data = vec![];
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File::open(&path)?.read_to_end(&mut data)?;
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Ok(data)
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}
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}
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