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|
//! Migration of legacy YAML files to TOML.
use std::path::Path;
use toml::Value;
use crate::cli::MigrateOptions;
use crate::config;
use crate::migrate::{migrate_config, migrate_toml, write_results};
/// Migrate a legacy YAML config to TOML.
pub fn migrate(
options: &MigrateOptions,
path: &Path,
recursion_limit: usize,
prefix: &str,
) -> Result<String, String> {
// Try to parse the configuration file.
let mut config = match config::deserialize_config(path, !options.dry_run) {
Ok(config) => config,
Err(err) => return Err(format!("YAML parsing error: {err}")),
};
// Migrate config imports.
if !options.skip_imports {
migrate_imports(options, &mut config, path, recursion_limit)?;
}
// Convert to TOML format.
let mut toml = toml::to_string(&config).map_err(|err| format!("conversion error: {err}"))?;
let new_path = format!("{prefix}.toml");
// Apply TOML migration, without recursing through imports.
toml = migrate_toml(toml)?.to_string();
// Write migrated TOML config.
write_results(options, &new_path, &toml)?;
Ok(new_path)
}
/// Migrate the imports of a config.
fn migrate_imports(
options: &MigrateOptions,
config: &mut Value,
base_path: &Path,
recursion_limit: usize,
) -> Result<(), String> {
let imports = match config::imports(config, base_path, recursion_limit) {
Ok(imports) => imports,
Err(err) => return Err(format!("import error: {err}")),
};
// Migrate the individual imports.
let mut new_imports = Vec::new();
for import in imports {
let import = match import {
Ok(import) => import,
Err(err) => return Err(format!("import error: {err}")),
};
// Keep yaml import if path does not exist.
if !import.exists() {
if options.dry_run {
eprintln!("Keeping yaml config for nonexistent import: {import:?}");
}
new_imports.push(Value::String(import.to_string_lossy().into()));
continue;
}
let migration = migrate_config(options, &import, recursion_limit - 1)?;
// Print success message.
if options.dry_run {
println!("{}", migration.success_message(true));
}
new_imports.push(Value::String(migration.new_path()));
}
// Update the imports field.
if let Some(import) = config.get_mut("import") {
*import = Value::Array(new_imports);
}
Ok(())
}
|
