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use std::path::PathBuf;
use crate::r#gen::constants::{
OVERRIDE_RENDERER_DISPATCHER, OVERRIDE_RENDERER_DISPATCHER_TEMPLATE, REGISTRY_TOML,
TEMPLATE_END, TEMPLATE_START,
};
/// Generate renderer list file from Registry.toml configuration
pub async fn generate_renderers_file(repo_root: &PathBuf) {
let template_path = repo_root.join(OVERRIDE_RENDERER_DISPATCHER_TEMPLATE);
let output_path = repo_root.join(OVERRIDE_RENDERER_DISPATCHER);
let config_path = repo_root.join(REGISTRY_TOML);
// Read the template
let template = tokio::fs::read_to_string(&template_path).await.unwrap();
// Read and parse the TOML configuration
let config_content = tokio::fs::read_to_string(&config_path).await.unwrap();
let config: toml::Value = toml::from_str(&config_content).unwrap();
// Collect all renderer configurations
let mut renderers = Vec::new();
let Some(table) = config.as_table() else {
return;
};
let Some(renderer_table) = table.get("renderer") else {
return;
};
let Some(renderer_table) = renderer_table.as_table() else {
return;
};
for (_, renderer_value) in renderer_table {
let Some(renderer_config) = renderer_value.as_table() else {
continue;
};
let Some(name) = renderer_config.get("name").and_then(|v| v.as_str()) else {
continue;
};
let Some(renderer_type) = renderer_config.get("type").and_then(|v| v.as_str()) else {
continue;
};
renderers.push((name.to_string(), renderer_type.to_string()));
}
// Extract the template section from the template content
const MATCH_MARKER: &str = "// MATCH";
let template_start_index = template
.find(TEMPLATE_START)
.ok_or("Template start marker not found")
.unwrap();
let template_end_index = template
.find(TEMPLATE_END)
.ok_or("Template end marker not found")
.unwrap();
let template_slice = &template[template_start_index..template_end_index + TEMPLATE_END.len()];
let renderer_template = template_slice
.trim_start_matches(TEMPLATE_START)
.trim_end_matches(TEMPLATE_END)
.trim_matches('\n');
// Generate the match arms for each renderer
let match_arms: String = renderers
.iter()
.map(|(name, renderer_type)| {
renderer_template
.replace("<<NAME>>", name)
.replace("RendererType", renderer_type)
.trim_matches('\n')
.to_string()
})
.collect::<Vec<String>>()
.join("\n");
// Replace the template section with the generated match arms
let final_content = template
.replace(renderer_template, "")
.replace(TEMPLATE_START, "")
.replace(TEMPLATE_END, "")
.replace(MATCH_MARKER, &match_arms)
.lines()
.filter(|line| !line.trim().is_empty())
.collect::<Vec<_>>()
.join("\n");
// Write the generated code
tokio::fs::write(output_path, final_content).await.unwrap();
println!(
"Generated renderer list file with {} renderers",
renderers.len()
);
}
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