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use serde::Deserialize;
use std::{fs::read_to_string, path::PathBuf};
pub struct AssetPipelineInput<T> {
pub source: PathBuf,
pub destination: PathBuf,
pub params: T,
}
impl<T> AssetPipelineInput<T> {
pub fn consume() -> Self
where
T: for<'de> Deserialize<'de>,
{
let mut args = std::env::args();
args.next();
let source = PathBuf::from(args.next().expect("* Could not read source path"));
let destination = PathBuf::from(args.next().expect("* Could not read destination path"));
let params = if let Some(arg) = args.next() {
let (t, i) = arg
.find('=')
.map(|i| (&arg[0..i], i + 1))
.unwrap_or_else(|| ("file", 0));
let content = match t {
"file" => {
let path = &arg[i..];
read_to_string(path).unwrap_or_else(|_| panic!("Could not read file: {}", path))
}
"data" => arg[i..].to_owned(),
name => panic!("Unexpected type: {}", name),
};
serde_json::from_str::<T>(&content).expect("Could not deserialize input content")
} else {
serde_json::from_reader::<_, T>(std::io::stdin())
.expect("Could not deserialize input stream")
};
Self {
source,
destination,
params,
}
}
pub fn unwrap(self) -> (PathBuf, PathBuf, T) {
(self.source, self.destination, self.params)
}
}