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use crate::{
object::{Value, parser::FromValue},
unityfs::UnityFS,
};
use anyhow::{Result, anyhow, bail};
use serde::Serialize;
use std::io::{Read, Seek, SeekFrom};
#[derive(Debug, Serialize)]
pub struct StreamedResource {
pub offset: u64,
pub size: u64,
pub path: String,
}
impl FromValue for StreamedResource {
fn from_value(v: Value) -> Result<Self> {
let mut fields = v.as_class("StreamedResource")?;
Ok(StreamedResource {
offset: fields.field("m_Offset")?,
size: fields.field("m_Size")?,
path: fields.field("m_Source")?,
})
}
}
impl StreamedResource {
pub fn read(&self, fs: &UnityFS<impl Read + Seek>) -> Result<Vec<u8>> {
if !self.path.starts_with("archive:") {
bail!(
"StreamedResource path does not start on 'archive:' ({:?})",
self.path
)
}
let nodeinfo = fs
.header
.nodes()
.iter()
.find(|n| self.path.ends_with(&n.name))
.ok_or(anyhow!("node with path {:?} not found", self.path))?
.to_owned();
let mut buf = Vec::new();
let mut node = fs.read(&nodeinfo)?;
node.seek(SeekFrom::Start(self.offset))?;
node.take(self.size).read_to_end(&mut buf)?;
Ok(buf)
}
}
|
