maolan_engine/plugins/
mod.rs

1pub mod clap_proc;
2pub mod ipc;
3#[cfg(all(unix, not(target_os = "macos")))]
4pub mod lv2_proc;
5pub mod types;
6pub mod vst3_proc;
7
8pub use types::*;
9
10use serde::de::DeserializeOwned;
11
12#[derive(serde::Deserialize)]
13struct ScanDiagnostic {
14    message: String,
15    plugin_uri: Option<String>,
16    plugin_name: Option<String>,
17    bundle_uri: Option<String>,
18}
19
20#[derive(serde::Deserialize)]
21struct ScanOutput<T> {
22    data: T,
23    errors: Vec<ScanDiagnostic>,
24    warnings: Vec<ScanDiagnostic>,
25}
26
27use crate::message::PluginKind;
28
29pub fn resolve_plugin_identifier(kind: PluginKind, identifier: &str) -> Result<String, String> {
30    if identifier.is_empty() {
31        return Err("plugin identifier is empty".to_string());
32    }
33    if identifier.contains('/')
34        || identifier.contains('\\')
35        || identifier.contains("::")
36        || identifier.contains('#')
37        || identifier.contains("://")
38        || identifier.starts_with("file:")
39        || std::path::Path::new(identifier).exists()
40    {
41        return Ok(identifier.to_string());
42    }
43
44    match kind {
45        PluginKind::Clap => {
46            let plugins = scan_plugins::<ClapPluginInfo>("clap")
47                .map_err(|e| format!("failed to scan CLAP plugins: {e}"))?;
48            plugins
49                .into_iter()
50                .find(|p| !p.id.is_empty() && p.id == identifier)
51                .map(|p| p.path)
52                .ok_or_else(|| format!("CLAP plugin ID not found: {identifier}"))
53        }
54        PluginKind::Vst3 => {
55            let plugins = scan_plugins::<Vst3PluginInfo>("vst3")
56                .map_err(|e| format!("failed to scan VST3 plugins: {e}"))?;
57            plugins
58                .into_iter()
59                .find(|p| !p.id.is_empty() && p.id == identifier)
60                .map(|p| p.path)
61                .ok_or_else(|| format!("VST3 plugin ID not found: {identifier}"))
62        }
63        PluginKind::Lv2 => {
64            let plugins = scan_plugins::<Lv2PluginInfo>("lv2")
65                .map_err(|e| format!("failed to scan LV2 plugins: {e}"))?;
66            plugins
67                .into_iter()
68                .find(|p| p.uri == identifier)
69                .map(|p| p.uri)
70                .ok_or_else(|| format!("LV2 plugin URI not found: {identifier}"))
71        }
72    }
73}
74
75pub fn scan_plugins<T: DeserializeOwned>(format: &str) -> Result<Vec<T>, String> {
76    let host_bin = ipc::find_plugin_host_binary().ok_or("maolan-plugin-host binary not found")?;
77
78    let mut cmd = std::process::Command::new(&host_bin);
79    cmd.arg("--scan")
80        .arg("--format")
81        .arg(format)
82        .arg("--path")
83        .arg("--system");
84    ipc::append_parent_log_level(&mut cmd);
85
86    let output = cmd
87        .output()
88        .map_err(|e| format!("failed to spawn plugin-host scanner: {e}"))?;
89
90    if !output.status.success() {
91        let stderr = String::from_utf8_lossy(&output.stderr);
92        return Err(format!(
93            "plugin-host scanner exited with code {:?}: {stderr}",
94            output.status.code()
95        ));
96    }
97
98    let json = String::from_utf8_lossy(&output.stdout);
99    let parsed: ScanOutput<Vec<T>> =
100        serde_json::from_str(&json).map_err(|e| format!("failed to parse scan JSON: {e}"))?;
101
102    for error in &parsed.errors {
103        tracing::error!(
104            message = %error.message,
105            plugin_uri = ?error.plugin_uri,
106            plugin_name = ?error.plugin_name,
107            bundle_uri = ?error.bundle_uri,
108            "plugin scan error"
109        );
110    }
111    for warning in &parsed.warnings {
112        tracing::warn!(
113            message = %warning.message,
114            plugin_uri = ?warning.plugin_uri,
115            plugin_name = ?warning.plugin_name,
116            bundle_uri = ?warning.bundle_uri,
117            "plugin scan warning"
118        );
119    }
120
121    Ok(parsed.data)
122}
123
124#[cfg(test)]
125mod tests {
126    use super::ScanOutput;
127
128    #[test]
129    fn scan_output_parses_wrapper() {
130        let json = r#"{
131            "errors": [
132                {
133                    "message": "error: failed to open manifest.ttl",
134                    "bundle_uri": "file:///tmp/broken.lv2/"
135                }
136            ],
137            "warnings": [
138                {
139                    "message": "warning: duplicate version",
140                    "plugin_uri": "http://example.com/plugin"
141                }
142            ],
143            "data": [{"name": "Test", "path": "/tmp/test.clap", "capabilities": null}]
144        }"#;
145        let output: ScanOutput<Vec<serde_json::Value>> = serde_json::from_str(json).unwrap();
146        assert_eq!(output.errors.len(), 1);
147        assert_eq!(
148            output.errors[0].message,
149            "error: failed to open manifest.ttl"
150        );
151        assert_eq!(
152            output.errors[0].bundle_uri,
153            Some("file:///tmp/broken.lv2/".to_string())
154        );
155        assert_eq!(output.warnings.len(), 1);
156        assert_eq!(
157            output.warnings[0].plugin_uri,
158            Some("http://example.com/plugin".to_string())
159        );
160        assert_eq!(output.data.len(), 1);
161        assert_eq!(output.data[0]["name"], "Test");
162    }
163}
maolan_engine/plugins/mod.rs

maolan_engine/plugins/
mod.rs
