/**
* Parser for go.mod (Go modules) dependencies.
*/
import { promises as fs } from 'fs';
import type { Dependency, ManifestInfo } from '../../types/dependency-analysis.js';
import { parsePipConstraint } from '../version-utils.js';
/**
* Parse go.mod file
*/
export async function parseGoMod(filePath: string): Promise<{
manifest: ManifestInfo;
dependencies: Dependency[];
}> {
const content = await fs.readFile(filePath, 'utf-8');
// Extract module name
const moduleMatch = /^module\s+(.+)$/m.exec(content);
const moduleName = moduleMatch?.[1]?.trim();
// Extract Go version
const goVersionMatch = /^go\s+([\d.]+)$/m.exec(content);
const goVersion = goVersionMatch?.[1];
const manifest: ManifestInfo = {
path: filePath,
type: 'go.mod',
ecosystem: 'go',
projectName: moduleName,
projectVersion: goVersion,
};
const dependencies: Dependency[] = [];
// Extract require block
const requireMatch = /require\s*\(([\s\S]*?)\n\s*\)/.exec(content);
if (requireMatch) {
const requireContent = requireMatch[1];
const lines = requireContent.split('\n');
for (const line of lines) {
const trimmed = line.trim();
if (!trimmed || trimmed.startsWith('//')) {
continue;
}
const dep = parseGoRequire(trimmed);
if (dep) {
dependencies.push(dep);
}
}
}
// Also check for single-line requires
const singleRequireRegex = /^require\s+([^\s]+)\s+([^\s]+)(?:\s+\/\/.*)?$/gm;
let match;
while ((match = singleRequireRegex.exec(content)) !== null) {
const name = match[1];
const version = match[2];
dependencies.push({
name,
version: parsePipConstraint(version),
scope: 'production',
ecosystem: 'go',
isDirect: true,
});
}
return { manifest, dependencies };
}
function parseGoRequire(line: string): Dependency | null {
// Format: module version // indirect (optional)
const match = /^([^\s]+)\s+([^\s]+)(?:\s+\/\/\s*(.+))?$/.exec(line);
if (!match) {
return null;
}
const name = match[1];
const version = match[2];
const comment = match[3];
const isIndirect = comment ? comment.includes('indirect') : false;
return {
name,
version: parsePipConstraint(version),
scope: 'production',
ecosystem: 'go',
isDirect: !isIndirect,
};
}
