goreleaser-action/src/version.ts

import * as core from '@actions/core';
import * as fs from 'fs';
import path from 'path';
import {Inputs} from './context';

export function getRequestedVersion(inputs: Inputs): string {
  let requestedVersion = inputs.version;
  let versionFilePath = inputs.versionFile;

  // If versionFile is provided, it takes precedence over version input.
  if (versionFilePath) {
    const workingDirectory = inputs.workdir;
    if (workingDirectory) {
      versionFilePath = path.join(workingDirectory, versionFilePath);
    }

    if (!fs.existsSync(versionFilePath)) {
      throw new Error(`The specified GoReleaser version file at: ${versionFilePath} does not exist`);
    }

    const content = fs.readFileSync(versionFilePath, 'utf-8');

    if (path.basename(versionFilePath) === '.tool-versions') {
      // asdf/mise file.
      const match = content.match(/^goreleaser\s+([^\n#]+)/m);
      requestedVersion = match ? 'v' + match[1].trim().replace(/^v/gi, '') : '';
    } else {
      throw new Error(`Unsupported version file: ${versionFilePath}. Only .tool-versions files are supported.`);
    }
  }

  return requestedVersion;
}