forked from rojo-rbx/rojo
89 lines
2.9 KiB
Rust
89 lines
2.9 KiB
Rust
use std::{borrow::Cow, collections::HashMap};
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use rbx_dom_weak::{RbxInstanceProperties, RbxTree};
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use crate::{
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snapshot::InstanceSnapshot,
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vfs::{Vfs, VfsEntry, VfsFetcher},
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};
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use super::{
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context::InstanceSnapshotContext,
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middleware::{SnapshotInstanceResult, SnapshotMiddleware},
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util::match_file_name,
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};
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pub struct SnapshotRbxm;
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impl SnapshotMiddleware for SnapshotRbxm {
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fn from_vfs<F: VfsFetcher>(
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_context: &mut InstanceSnapshotContext,
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vfs: &mut Vfs<F>,
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entry: &VfsEntry,
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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 instance_name = match match_file_name(entry.path(), ".rbxm") {
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Some(name) => name,
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None => return Ok(None),
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};
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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(vfs)?.as_slice())
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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.to_owned());
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snapshot.metadata.instigating_source = Some(entry.path().to_path_buf().into());
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snapshot.metadata.relevant_paths = vec![entry.path().to_path_buf()];
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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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}
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#[cfg(test)]
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mod test {
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use super::*;
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use crate::vfs::{NoopFetcher, VfsDebug, VfsSnapshot};
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#[test]
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fn model_from_vfs() {
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let mut vfs = Vfs::new(NoopFetcher);
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let file = VfsSnapshot::file(include_bytes!("../../assets/test-folder.rbxm").to_vec());
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vfs.debug_load_snapshot("/foo.rbxm", file);
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let entry = vfs.get("/foo.rbxm").unwrap();
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let instance_snapshot =
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SnapshotRbxm::from_vfs(&mut InstanceSnapshotContext::default(), &mut vfs, &entry)
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.unwrap()
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.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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