forked from rojo-rbx/rojo
92 lines
2.9 KiB
Rust
92 lines
2.9 KiB
Rust
use std::{borrow::Cow, collections::HashMap};
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use rbx_dom_weak::{RbxId, RbxInstanceProperties, RbxTree};
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use crate::{
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imfs::new::{Imfs, ImfsEntry, ImfsFetcher},
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snapshot::InstanceSnapshot,
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};
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use super::middleware::{SnapshotFileResult, SnapshotInstanceResult, SnapshotMiddleware};
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pub struct SnapshotRbxm;
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impl SnapshotMiddleware for SnapshotRbxm {
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fn from_imfs<F: ImfsFetcher>(
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imfs: &mut Imfs<F>,
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entry: &ImfsEntry,
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) -> SnapshotInstanceResult<'static> {
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if entry.is_directory() {
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return Ok(None);
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}
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let file_name = entry.path().file_name().unwrap().to_string_lossy();
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if !file_name.ends_with(".rbxm") {
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return Ok(None);
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}
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let instance_name = entry
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.path()
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.file_stem()
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.expect("Could not extract file stem")
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.to_string_lossy()
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.to_string();
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let mut temp_tree = RbxTree::new(RbxInstanceProperties {
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name: "DataModel".to_owned(),
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class_name: "DataModel".to_owned(),
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properties: HashMap::new(),
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});
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let root_id = temp_tree.get_root_id();
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rbx_binary::decode(&mut temp_tree, root_id, entry.contents(imfs)?)
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.expect("TODO: Handle rbx_binary errors");
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let root_instance = temp_tree.get_instance(root_id).unwrap();
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let children = root_instance.get_children_ids();
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if children.len() == 1 {
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let mut snapshot = InstanceSnapshot::from_tree(&temp_tree, children[0]);
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snapshot.name = Cow::Owned(instance_name);
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// TODO: Assign snapshot.source
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Ok(Some(snapshot))
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} else {
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panic!("Rojo doesn't have support for model files with zero or more than one top-level instances yet.");
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}
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}
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fn from_instance(_tree: &RbxTree, _id: RbxId) -> SnapshotFileResult {
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unimplemented!("Snapshotting models");
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}
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}
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#[cfg(test)]
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mod test {
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use super::*;
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use crate::imfs::new::{ImfsSnapshot, NoopFetcher};
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#[test]
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fn model_from_imfs() {
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let mut imfs = Imfs::new(NoopFetcher);
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let file = ImfsSnapshot::file(include_bytes!("../../assets/test-folder.rbxm").to_vec());
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imfs.load_from_snapshot("/foo.rbxm", file);
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let entry = imfs.get("/foo.rbxm").unwrap();
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let instance_snapshot = SnapshotRbxm::from_imfs(&mut imfs, &entry).unwrap().unwrap();
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assert_eq!(instance_snapshot.name, "foo");
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assert_eq!(instance_snapshot.class_name, "Folder");
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assert_eq!(instance_snapshot.children, Vec::new());
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// We intentionally don't assert on properties. rbx_binary does not
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// distinguish between String and BinaryString. The sample model was
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// created by Roblox Studio and has an empty BinaryString "Tags"
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// property that currently deserializes incorrectly.
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// See: https://github.com/rojo-rbx/rbx-dom/issues/49
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}
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}
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