devalang_wasm/engine/plugin/
loader.rs

1#[cfg(feature = "cli")]
2use std::path::PathBuf;
3
4#[derive(Debug, Clone)]
5pub struct PluginInfo {
6    pub author: String,
7    pub name: String,
8    pub version: Option<String>,
9    pub description: Option<String>,
10    pub exports: Vec<PluginExport>,
11}
12
13#[derive(Debug, Clone)]
14pub struct PluginExport {
15    pub name: String,
16    pub kind: String,
17}
18
19#[cfg(feature = "cli")]
20pub fn load_plugin(author: &str, name: &str) -> Result<(PluginInfo, Vec<u8>), String> {
21    use serde::Deserialize;
22    
23    #[derive(Debug, Deserialize)]
24    struct LocalPluginToml {
25        plugin: LocalPluginInfo,
26        #[serde(rename = "exports", default)]
27        exports: Vec<LocalExportEntry>,
28    }
29    
30    #[derive(Debug, Deserialize)]
31    struct LocalPluginInfo {
32        name: String,
33        #[serde(default)]
34        version: Option<String>,
35        #[serde(default)]
36        description: Option<String>,
37        #[serde(default)]
38        publisher: Option<String>,
39    }
40    
41    #[derive(Debug, Deserialize)]
42    struct LocalExportEntry {
43        name: String,
44        kind: String,
45    }
46    
47    // Find .deva directory from current dir or parents
48    let deva_dir = find_deva_dir()?;
49    
50    // Try new layout: .deva/plugins/<publisher>/<name>/
51    let plugin_dir = deva_dir.join("plugins").join(author).join(name);
52    let toml_path = plugin_dir.join("plugin.toml");
53    let wasm_path = plugin_dir.join(format!("{}.wasm", name));
54    
55    if !toml_path.exists() {
56        return Err(format!("❌ Plugin file not found: {}", toml_path.display()));
57    }
58    
59    if !wasm_path.exists() {
60        return Err(format!("❌ Plugin wasm not found: {}", wasm_path.display()));
61    }
62    
63    // Load toml
64    let toml_content = std::fs::read_to_string(&toml_path)
65        .map_err(|e| format!("Failed to read '{}': {}", toml_path.display(), e))?;
66    let plugin_toml: LocalPluginToml = toml::from_str(&toml_content)
67        .map_err(|e| format!("Failed to parse '{}': {}", toml_path.display(), e))?;
68    
69    // Load wasm bytes
70    let wasm_bytes = std::fs::read(&wasm_path)
71        .map_err(|e| format!("Failed to read '{}': {}", wasm_path.display(), e))?;
72    
73    // Convert to PluginInfo
74    let info = PluginInfo {
75        author: plugin_toml.plugin.publisher.unwrap_or_else(|| author.to_string()),
76        name: plugin_toml.plugin.name.clone(),
77        version: plugin_toml.plugin.version.clone(),
78        description: plugin_toml.plugin.description.clone(),
79        exports: plugin_toml.exports.iter().map(|e| PluginExport {
80            name: e.name.clone(),
81            kind: e.kind.clone(),
82        }).collect(),
83    };
84    
85    Ok((info, wasm_bytes))
86}
87
88#[cfg(feature = "cli")]
89fn find_deva_dir() -> Result<PathBuf, String> {
90    use std::env;
91    
92    let current_dir = env::current_dir()
93        .map_err(|e| format!("Failed to get current directory: {}", e))?;
94    
95    // Start from current dir and walk up to find .deva
96    let mut dir = current_dir.as_path();
97    loop {
98        let deva_path = dir.join(".deva");
99        if deva_path.exists() && deva_path.is_dir() {
100            return Ok(deva_path);
101        }
102        
103        // Move to parent directory
104        match dir.parent() {
105            Some(parent) => dir = parent,
106            None => return Err("Could not find .deva directory in current directory or parents".to_string()),
107        }
108    }
109}
devalang_wasm/engine/plugin/loader.rs

devalang_wasm/engine/plugin/
loader.rs
