f1fadb5398
DiscImageDevice now walks the GDFX tree at open() and caches every
file/dir entry by full relative path; the previous root-only scan
returned ENOENT for any path under a subdirectory (dat/tables.pak,
media/x.wav). Lookups become O(n) over the cached vec.
xex::load_image gains a tracing span plus per-load metrics
(xex.load_image_ms histogram, xex.bytes_{in,out} counters) so the
observability subscriber the app installs can see decompression cost.
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
34 lines
808 B
Rust
34 lines
808 B
Rust
pub mod device;
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pub mod disc_image;
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use thiserror::Error;
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#[derive(Debug, Error)]
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pub enum VfsError {
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#[error("I/O error: {0}")]
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Io(#[from] std::io::Error),
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#[error("Invalid format: {0}")]
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InvalidFormat(String),
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#[error("File not found: {0}")]
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NotFound(String),
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}
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/// A virtual filesystem entry (file or directory).
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#[derive(Debug, Clone)]
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pub struct VfsEntry {
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pub name: String,
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pub is_directory: bool,
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pub size: u64,
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pub offset: u64,
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}
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/// Trait for VFS device implementations (XISO, STFS, host path, etc.)
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pub trait VfsDevice: Send + Sync {
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fn name(&self) -> &str;
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fn list_root(&self) -> Result<Vec<VfsEntry>, VfsError>;
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fn read_file(&self, path: &str) -> Result<Vec<u8>, VfsError>;
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fn stat(&self, path: &str) -> Result<VfsEntry, VfsError>;
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}
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