| /* @flow */ |
| |
| "use strict"; |
| |
| const fs = require("fs"); |
| const hash = require("./hash"); |
| const path = require("path"); |
| |
| /** |
| * Return the cacheFile to be used by stylelint, based on whether the provided parameter is |
| * a directory or looks like a directory (ends in `path.sep`), in which case the file |
| * name will be `cacheFile/.cache_hashOfCWD`. |
| * |
| * If cacheFile points to a file or looks like a file, then it will just use that file. |
| * |
| * @param {string} cacheFile - The name of file to be used to store the cache |
| * @param {string} cwd - Current working directory. Used for tests |
| * @returns {string} Resolved path to the cache file |
| */ |
| module.exports = function getCacheFile( |
| cacheFile /*: string */, |
| cwd /*: string */ |
| ) /*: string */ { |
| /* |
| * Make sure path separators are normalized for environment/os. |
| * Also, keep trailing path separator if present. |
| */ |
| cacheFile = path.normalize(cacheFile); |
| |
| const resolvedCacheFile = path.resolve(cwd, cacheFile); |
| // If the last character passed is a path separator, we assume is a directory. |
| const looksLikeADirectory = cacheFile[cacheFile.length - 1] === path.sep; |
| |
| /** |
| * Return the default cache file name when provided parameter is a directory. |
| * @returns {string} - Resolved path to the cacheFile |
| */ |
| function getCacheFileForDirectory() { |
| return path.join(resolvedCacheFile, `.stylelintcache_${hash(cwd)}`); |
| } |
| |
| let fileStats; |
| |
| try { |
| fileStats = fs.lstatSync(resolvedCacheFile); |
| } catch (ex) { |
| fileStats = null; |
| } |
| |
| if (looksLikeADirectory || (fileStats && fileStats.isDirectory())) { |
| // Return path to provided directory with generated file name. |
| return getCacheFileForDirectory(); |
| } |
| |
| // Return normalized path to cache file. |
| return resolvedCacheFile; |
| }; |