Function getVersionInputFromToolVersions

src/utils.ts:322–350

(versionFile: string)

 * Python version extracted from a .tool-versions file.
 */
export function getVersionInputFromToolVersions(versionFile: string): string[] {
  if (!fs.existsSync(versionFile)) {
    core.warning(`File ${versionFile} does not exist.`);
    return [];
  }

  try {
    const fileContents = fs.readFileSync(versionFile, 'utf8');
    const lines = fileContents.split('\n');

    for (const line of lines) {
      // Skip commented lines
      if (line.trim().startsWith('#')) {
        continue;
      }
      const match = line.match(/^\s*python\s*v?\s*(?<version>[^\s]+)\s*$/);
      if (match) {
        return [match.groups?.version.trim() || ''];
      }
    }

    core.warning(`No Python version found in ${versionFile}`);

    return [];
  } catch (error) {
    core.error(`Error reading ${versionFile}: ${(error as Error).message}`);
    return [];
  }
}

/**
 * Python version extracted from the Pipfile file.