snyk-go-plugin/dist/helpers.js

Snyk CLI Golang plugin

"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
exports.pathToPosix = exports.jsonParse = exports.resolveStdlibVersion = void 0;
const fs = require("fs");
const path = require("path");
const subProcess = require("./sub-process");
const debugLib = require("debug");
const debug = debugLib('snyk-go-plugin');
/**
 * Determine the Go tool-chain version (e.g. "1.22.2") to be used
 * as a surrogate version for standard-library packages.
 *
 * 1. Looks for a `toolchain goX.Y.Z` directive in `go.mod`.
 * 2. Falls back to the `go version` output when the directive is absent.
 *
 * Returns the version **without** the leading `go` prefix or
 * the string `unknown` when the version cannot be resolved.
 */
async function resolveStdlibVersion(root, targetFile) {
    // 1) Try to read from go.mod the toolchian version e.g.`toolchain goX.Y.Z`
    let toolChainMatch = null;
    try {
        const goModPath = path.resolve(root, targetFile);
        const goModContent = fs.readFileSync(goModPath, 'utf8');
        toolChainMatch = /^\s*toolchain\s+go(\d+\.\d+\.\d+)/m.exec(goModContent);
        if (toolChainMatch) {
            debug('Found toolchain in go.mod', { toolChainMatch });
            return toolChainMatch[1]; // already without the "go" prefix
        }
    }
    catch {
        // ignore, fall back to 2)
        debug('Failed to read toolchain from go.mod', { toolChainMatch });
    }
    // 2) Try to read from the `go version` command output
    const output = await subProcess.execute('go', ['version'], { cwd: root });
    const versionMatch = /\d+\.\d+(\.\d+)?/.exec(output)[0];
    if (versionMatch) {
        debug('Found go version', { versionMatch });
        return versionMatch; // already without the "go" prefix
    }
    return 'unknown';
}
exports.resolveStdlibVersion = resolveStdlibVersion;
// Better error message than JSON.parse
function jsonParse(s) {
    try {
        return JSON.parse(s);
    }
    catch (e) {
        e.message = e.message + ', original string: "' + s + '"';
        throw e;
    }
}
exports.jsonParse = jsonParse;
function pathToPosix(fpath) {
    const parts = fpath.split(path.sep);
    return parts.join(path.posix.sep);
}
exports.pathToPosix = pathToPosix;
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