rew_core/
lib.rs

1//! Core utilities and types for the Rew runtime system
2
3pub mod logger;
4pub mod utils;
5
6use serde::{Deserialize, Serialize};
7use std::path::PathBuf;
8use std::{
9  fs::File,
10  io::{Read, Seek, SeekFrom},
11};
12
13#[macro_export]
14macro_rules! rew_error {
15  ($msg:expr) => {
16    deno_core::error::CoreErrorKind::Io(::std::io::Error::new(
17      std::io::ErrorKind::InvalidData,
18      $msg,
19    ))
20    .into()
21  };
22
23  ($msg:expr, $kind:expr) => {
24    deno_core::error::CoreErrorKind::Io(::std::io::Error::new($kind, $msg)).into()
25  };
26}
27
28/// Build options for compiling Rew code
29#[derive(Debug, Clone, Default)]
30pub struct BuildOptions {
31  pub bundle_all: bool,
32  pub entry_file: Option<PathBuf>,
33}
34
35/// App configuration structure
36#[derive(Debug, Deserialize, Serialize, Clone)]
37pub struct AppManifest {
38  pub package: Option<String>,
39  pub version: Option<String>,
40  pub description: Option<String>,
41  pub entries: Option<String>,
42}
43
44#[derive(Debug, Deserialize, Serialize, Clone)]
45pub struct AppConfig {
46  pub manifest: Option<AppManifest>,
47  pub entries: Option<std::collections::HashMap<String, String>>,
48}
49
50#[derive(Debug, Clone)]
51pub struct AppInfo {
52  pub path: PathBuf,
53  pub config: AppConfig,
54}
55
56#[derive(Default)]
57pub struct RuntimeState {
58  pub current_dir: PathBuf,
59  pub args: Vec<String>,
60}
61
62pub fn load_embedded_script() -> Option<String> {
63  let exe = std::env::current_exe().ok()?;
64  let mut f = File::open(&exe).ok()?;
65
66  // footer = [len (u64 LE)] [magic 4 bytes]
67  f.seek(SeekFrom::End(-12)).ok()?;
68  let mut footer = [0u8; 12];
69  f.read_exact(&mut footer).ok()?;
70
71  if &footer[8..12] != b"REW!" {
72    return None; // not patched
73  }
74  let len = u64::from_le_bytes(footer[0..8].try_into().unwrap());
75
76  // read payload
77  f.seek(SeekFrom::End(-(12 + len as i64))).ok()?;
78  let mut data = vec![0u8; len as usize];
79  f.read_exact(&mut data).ok()?;
80
81  String::from_utf8(data).ok()
82}
rew_core/lib.rs

rew_core/
lib.rs
