/**
* Parser for Cargo.toml (Rust) dependencies.
*/
import { promises as fs } from 'fs';
import * as TOML from 'toml';
import type { Dependency, DependencyScope, ManifestInfo } from '../../types/dependency-analysis.js';
import { parseCargoConstraint } from '../version-utils.js';
interface CargoToml {
package?: {
name?: string;
version?: string;
};
dependencies?: Record<string, string | DependencyDetails>;
'dev-dependencies'?: Record<string, string | DependencyDetails>;
'build-dependencies'?: Record<string, string | DependencyDetails>;
}
interface DependencyDetails {
version?: string;
features?: string[];
optional?: boolean;
git?: string;
path?: string;
}
/**
* Parse Cargo.toml file
*/
export async function parseCargoToml(filePath: string): Promise<{
manifest: ManifestInfo;
dependencies: Dependency[];
}> {
const content = await fs.readFile(filePath, 'utf-8');
const cargo = TOML.parse(content) as CargoToml;
const manifest: ManifestInfo = {
path: filePath,
type: 'Cargo.toml',
ecosystem: 'cargo',
projectName: cargo.package?.name,
projectVersion: cargo.package?.version,
};
const dependencies: Dependency[] = [];
// Parse production dependencies
if (cargo.dependencies) {
for (const [name, details] of Object.entries(cargo.dependencies)) {
dependencies.push(createDependency(name, details, 'production'));
}
}
// Parse dev dependencies
if (cargo['dev-dependencies']) {
for (const [name, details] of Object.entries(cargo['dev-dependencies'])) {
dependencies.push(createDependency(name, details, 'development'));
}
}
// Parse build dependencies
if (cargo['build-dependencies']) {
for (const [name, details] of Object.entries(cargo['build-dependencies'])) {
dependencies.push(createDependency(name, details, 'build'));
}
}
return { manifest, dependencies };
}
function createDependency(
name: string,
details: string | DependencyDetails,
scope: DependencyScope
): Dependency {
if (typeof details === 'string') {
return {
name,
version: parseCargoConstraint(details),
scope,
ecosystem: 'cargo',
isDirect: true,
};
}
const version = details.version ?? '*';
const dep: Dependency = {
name,
version: parseCargoConstraint(version),
scope: details.optional === true ? 'optional' : scope,
ecosystem: 'cargo',
isDirect: true,
};
if (details.features) {
dep.features = details.features;
}
if (details.git) {
dep.repository = details.git;
}
return dep;
}
