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A cohesive filesystem & IO library — the foundation for saves, config, mods, and
asset loading — wrapping the bare file_* builtins into one safe, ergonomic API a
non-expert can use without touching a file descriptor or a byte buffer.
Path.* join / dir / base / ext / stem / normalize (pure lexical string ops)
Fs.* exists / is_dir / read_text / write_text / append_text / remove /
size / mkdir / copy / list
Mime.* of (extension table) / sniff (magic bytes: PNG/JPEG/GIF/PDF)
Pure string IR for Path.*; libc (fopen/access/mkdir/rename/opendir…) for Fs.*;
C-free, emitted on demand (g_uses_fsrt). Safety and determinism baked in:
- write_text and copy are atomic (write a temp file, then rename over the target)
so a crash mid-write never corrupts the previous file;
- mkdir creates parents (mkdir -p);
- list is sorted for a stable, reproducible directory walk;
- fallible calls return values (null / false / -1), never crashes — ready for a
first-class try/else when the error-handling work lands.
Complements Os.* (#21): Os supplies per-user locations, Fs the operations. v1
targets the native macOS/BSD filesystem with "/" separators; Windows separators,
a sandboxed wasm virtual FS, recursive directory copy, and richer magic-byte
sniffing are documented follow-ups.
- examples/library/fs.ludic: 32 assertions across pure Path ops (incl. normalize
resolving ./ .. and duplicate slashes), a real create/read/append/copy/list/
remove cycle under build/, and Mime by-extension + by-magic (GIF signature vs a
.bin extension). Wired into `x test` (now 56 passed).
- docs: new Path, Fs, and Mime sections + 18 per-symbol pages; inventory updated;
every fence passes check-docs; site builds via docgen.
- seed regenerated; `x bootstrap-cfree` fixpoint holds.
Closes #10
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
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666 B
| id | name | category | kind | tokens | sig | tip | order | ns | member |
|---|---|---|---|---|---|---|---|---|---|
| path-join | Path.join | path | namespace-method | Path.join | Path.join(a, b) -> string | Join two path segments with the separator. | 1 | Path | join |
Joins two path segments with a single /, inserting one only when needed (so join("a/", "b") and join("a", "b") both give a/b). If b is absolute it wins; if either side is empty the other is returned.
Parameters:
a— the leading pathb— the trailing path or filename
program Join {
entry {
if Path.join("mods", "foo.ludic") == "mods/foo.ludic" { print(1) }
}
}