[Teton] Move console/shell to rust. WIP

rust/lib/victoriafalls/Cargo.toml

@@ -0,0 +1,15 @@
+[package]
+name = "victoriafalls"
+version = "0.1.0"
+edition = "2021"
+
+[dependencies]
+mammoth = { path = "../mammoth" }
+yellowstone = { path = "../yellowstone" }
+yunq = {path = "../yunq"}
+yunq-derive = {path = "../yunq-derive"}
+
+[build-dependencies]
+yunqc = {path = "../../../yunq/rust"}
+
+

rust/lib/victoriafalls/build.rs

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+use std::fs;
+
+fn main() {
+    let input_file = "../../../sys/victoriafalls/lib/victoriafalls/victoriafalls.yunq";
+
+    println!("cargo::rerun-if-changed={input_file}");
+
+    let input = fs::read_to_string(input_file).expect("Failed to read input file");
+
+    let code = yunqc::codegen(&input).expect("Failed to generate yunq code.");
+
+    let out = std::env::var("OUT_DIR").unwrap() + "/yunq.rs";
+    fs::write(out, code).expect("Failed to write generated code.");
+}

rust/lib/victoriafalls/src/file.rs

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+use crate::OpenFileRequest;
+use crate::VFSClient;
+use alloc::string::ToString;
+use mammoth::zion::ZError;
+
+static mut VFS_CLIENT: Option<VFSClient> = None;
+
+fn get_client() -> &'static mut VFSClient {
+    unsafe {
+        if let None = VFS_CLIENT {
+            let endpoint_cap = yellowstone::from_init_endpoint()
+                .get_endpoint(&yellowstone::GetEndpointRequest {
+                    endpoint_name: "victoriafalls".to_string(),
+                })
+                .expect("Failed to get VFS endpoint");
+
+            VFS_CLIENT = Some(VFSClient::new(endpoint_cap.endpoint));
+        }
+        VFS_CLIENT.as_mut().unwrap()
+    }
+}
+
+pub struct File {
+    memory: mammoth::mem::MemoryRegion,
+}
+
+impl File {
+    pub fn open(path: &str) -> Result<Self, ZError> {
+        let vfs = get_client();
+        let resp = vfs.open_file(&OpenFileRequest {
+            path: path.to_string(),
+        })?;
+
+        Ok(Self {
+            memory: mammoth::mem::MemoryRegion::from_cap(resp.memory)?,
+        })
+    }
+
+    pub fn slice(&self, offset: usize, len: usize) -> &[u8] {
+        &self.memory.slice()[offset..offset + len]
+    }
+}

rust/lib/victoriafalls/src/lib.rs

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+#![no_std]
+
+use core::include;
+
+include!(concat!(env!("OUT_DIR"), "/yunq.rs"));
+
+pub mod file;