1 | /**
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2 | * @fileoverview Utilities for working with globs and the filesystem.
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3 | * @author Ian VanSchooten
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4 | */
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5 | ;
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6 |
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7 | //------------------------------------------------------------------------------
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8 | // Requirements
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9 | //------------------------------------------------------------------------------
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10 |
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11 | const lodash = require("lodash"),
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12 | fs = require("fs"),
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13 | path = require("path"),
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14 | GlobSync = require("./glob"),
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15 |
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16 | pathUtils = require("./path-utils"),
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17 | IgnoredPaths = require("./ignored-paths");
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18 |
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19 | const debug = require("debug")("eslint:glob-utils");
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20 |
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21 | //------------------------------------------------------------------------------
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22 | // Helpers
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23 | //------------------------------------------------------------------------------
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24 |
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25 | /**
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26 | * Checks whether a directory exists at the given location
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27 | * @param {string} resolvedPath A path from the CWD
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28 | * @returns {boolean} `true` if a directory exists
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29 | */
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30 | function directoryExists(resolvedPath) {
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31 | return fs.existsSync(resolvedPath) && fs.statSync(resolvedPath).isDirectory();
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32 | }
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33 |
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34 | /**
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35 | * Checks if a provided path is a directory and returns a glob string matching
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36 | * all files under that directory if so, the path itself otherwise.
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37 | *
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38 | * Reason for this is that `glob` needs `/**` to collect all the files under a
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39 | * directory where as our previous implementation without `glob` simply walked
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40 | * a directory that is passed. So this is to maintain backwards compatibility.
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41 | *
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42 | * Also makes sure all path separators are POSIX style for `glob` compatibility.
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43 | *
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44 | * @param {Object} [options] An options object
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45 | * @param {string[]} [options.extensions=[".js"]] An array of accepted extensions
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46 | * @param {string} [options.cwd=process.cwd()] The cwd to use to resolve relative pathnames
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47 | * @returns {Function} A function that takes a pathname and returns a glob that
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48 | * matches all files with the provided extensions if
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49 | * pathname is a directory.
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50 | */
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51 | function processPath(options) {
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52 | const cwd = (options && options.cwd) || process.cwd();
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53 | let extensions = (options && options.extensions) || [".js"];
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54 |
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55 | extensions = extensions.map(ext => ext.replace(/^\./u, ""));
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56 |
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57 | let suffix = "/**";
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58 |
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59 | if (extensions.length === 1) {
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60 | suffix += `/*.${extensions[0]}`;
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61 | } else {
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62 | suffix += `/*.{${extensions.join(",")}}`;
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63 | }
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64 |
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65 | /**
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66 | * A function that converts a directory name to a glob pattern
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67 | *
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68 | * @param {string} pathname The directory path to be modified
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69 | * @returns {string} The glob path or the file path itself
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70 | * @private
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71 | */
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72 | return function(pathname) {
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73 | if (pathname === "") {
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74 | return "";
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75 | }
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76 |
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77 | let newPath = pathname;
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78 | const resolvedPath = path.resolve(cwd, pathname);
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79 |
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80 | if (directoryExists(resolvedPath)) {
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81 | newPath = pathname.replace(/[/\\]$/u, "") + suffix;
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82 | }
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83 |
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84 | return pathUtils.convertPathToPosix(newPath);
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85 | };
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86 | }
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87 |
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88 | /**
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89 | * The error type when no files match a glob.
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90 | */
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91 | class NoFilesFoundError extends Error {
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92 |
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93 | /**
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94 | * @param {string} pattern - The glob pattern which was not found.
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95 | */
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96 | constructor(pattern) {
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97 | super(`No files matching '${pattern}' were found.`);
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98 |
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99 | this.messageTemplate = "file-not-found";
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100 | this.messageData = { pattern };
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101 | }
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102 |
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103 | }
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104 |
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105 | /**
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106 | * The error type when there are files matched by a glob, but all of them have been ignored.
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107 | */
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108 | class AllFilesIgnoredError extends Error {
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109 |
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110 | /**
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111 | * @param {string} pattern - The glob pattern which was not found.
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112 | */
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113 | constructor(pattern) {
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114 | super(`All files matched by '${pattern}' are ignored.`);
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115 | this.messageTemplate = "all-files-ignored";
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116 | this.messageData = { pattern };
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117 | }
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118 | }
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119 |
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120 | const NORMAL_LINT = {};
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121 | const SILENTLY_IGNORE = {};
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122 | const IGNORE_AND_WARN = {};
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123 |
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124 | /**
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125 | * Tests whether a file should be linted or ignored
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126 | * @param {string} filename The file to be processed
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127 | * @param {{ignore: (boolean|null)}} options If `ignore` is false, updates the behavior to
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128 | * not process custom ignore paths, and lint files specified by direct path even if they
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129 | * match the default ignore path
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130 | * @param {boolean} isDirectPath True if the file was provided as a direct path
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131 | * (as opposed to being resolved from a glob)
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132 | * @param {IgnoredPaths} ignoredPaths An instance of IgnoredPaths to check whether a given
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133 | * file is ignored.
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134 | * @returns {(NORMAL_LINT|SILENTLY_IGNORE|IGNORE_AND_WARN)} A directive for how the
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135 | * file should be processed (either linted normally, or silently ignored, or ignored
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136 | * with a warning that it is being ignored)
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137 | */
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138 | function testFileAgainstIgnorePatterns(filename, options, isDirectPath, ignoredPaths) {
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139 | const shouldProcessCustomIgnores = options.ignore !== false;
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140 | const shouldLintIgnoredDirectPaths = options.ignore === false;
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141 | const fileMatchesIgnorePatterns = ignoredPaths.contains(filename, "default") ||
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142 | (shouldProcessCustomIgnores && ignoredPaths.contains(filename, "custom"));
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143 |
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144 | if (fileMatchesIgnorePatterns && isDirectPath && !shouldLintIgnoredDirectPaths) {
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145 | return IGNORE_AND_WARN;
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146 | }
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147 |
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148 | if (!fileMatchesIgnorePatterns || (isDirectPath && shouldLintIgnoredDirectPaths)) {
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149 | return NORMAL_LINT;
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150 | }
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151 |
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152 | return SILENTLY_IGNORE;
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153 | }
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154 |
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155 | //------------------------------------------------------------------------------
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156 | // Public Interface
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157 | //------------------------------------------------------------------------------
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158 |
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159 | /**
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160 | * Resolves any directory patterns into glob-based patterns for easier handling.
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161 | * @param {string[]} patterns File patterns (such as passed on the command line).
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162 | * @param {Object} options An options object.
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163 | * @param {string} [options.globInputPaths] False disables glob resolution.
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164 | * @returns {string[]} The equivalent glob patterns and filepath strings.
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165 | */
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166 | function resolveFileGlobPatterns(patterns, options) {
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167 | if (options.globInputPaths === false) {
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168 | return patterns;
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169 | }
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170 |
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171 | const processPathExtensions = processPath(options);
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172 |
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173 | return patterns.map(processPathExtensions);
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174 | }
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175 |
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176 | const dotfilesPattern = /(?:(?:^\.)|(?:[/\\]\.))[^/\\.].*/u;
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177 |
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178 | /**
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179 | * Build a list of absolute filesnames on which ESLint will act.
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180 | * Ignored files are excluded from the results, as are duplicates.
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181 | *
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182 | * @param {string[]} globPatterns Glob patterns.
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183 | * @param {Object} [providedOptions] An options object.
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184 | * @param {string} [providedOptions.cwd] CWD (considered for relative filenames)
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185 | * @param {boolean} [providedOptions.ignore] False disables use of .eslintignore.
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186 | * @param {string} [providedOptions.ignorePath] The ignore file to use instead of .eslintignore.
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187 | * @param {string} [providedOptions.ignorePattern] A pattern of files to ignore.
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188 | * @param {string} [providedOptions.globInputPaths] False disables glob resolution.
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189 | * @returns {string[]} Resolved absolute filenames.
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190 | */
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191 | function listFilesToProcess(globPatterns, providedOptions) {
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192 | const options = providedOptions || { ignore: true };
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193 | const cwd = options.cwd || process.cwd();
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194 |
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195 | const getIgnorePaths = lodash.memoize(
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196 | optionsObj =>
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197 | new IgnoredPaths(optionsObj)
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198 | );
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199 |
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200 | /*
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201 | * The test "should use default options if none are provided" (source-code-utils.js) checks that 'module.exports.resolveFileGlobPatterns' was called.
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202 | * So it cannot use the local function "resolveFileGlobPatterns".
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203 | */
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204 | const resolvedGlobPatterns = module.exports.resolveFileGlobPatterns(globPatterns, options);
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205 |
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206 | debug("Creating list of files to process.");
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207 | const resolvedPathsByGlobPattern = resolvedGlobPatterns.map(pattern => {
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208 | if (pattern === "") {
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209 | return [{
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210 | filename: "",
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211 | behavior: SILENTLY_IGNORE
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212 | }];
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213 | }
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214 |
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215 | const file = path.resolve(cwd, pattern);
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216 |
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217 | if (options.globInputPaths === false || (fs.existsSync(file) && fs.statSync(file).isFile())) {
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218 | const ignoredPaths = getIgnorePaths(options);
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219 | const fullPath = options.globInputPaths === false ? file : fs.realpathSync(file);
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220 |
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221 | return [{
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222 | filename: fullPath,
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223 | behavior: testFileAgainstIgnorePatterns(fullPath, options, true, ignoredPaths)
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224 | }];
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225 | }
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226 |
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227 | // regex to find .hidden or /.hidden patterns, but not ./relative or ../relative
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228 | const globIncludesDotfiles = dotfilesPattern.test(pattern);
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229 | let newOptions = options;
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230 |
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231 | if (!options.dotfiles) {
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232 | newOptions = Object.assign({}, options, { dotfiles: globIncludesDotfiles });
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233 | }
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234 |
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235 | const ignoredPaths = getIgnorePaths(newOptions);
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236 | const shouldIgnore = ignoredPaths.getIgnoredFoldersGlobChecker();
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237 | const globOptions = {
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238 | nodir: true,
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239 | dot: true,
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240 | cwd
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241 | };
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242 |
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243 | return new GlobSync(pattern, globOptions, shouldIgnore).found.map(globMatch => {
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244 | const relativePath = path.resolve(cwd, globMatch);
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245 |
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246 | return {
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247 | filename: relativePath,
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248 | behavior: testFileAgainstIgnorePatterns(relativePath, options, false, ignoredPaths)
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249 | };
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250 | });
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251 | });
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252 |
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253 | const allPathDescriptors = resolvedPathsByGlobPattern.reduce((pathsForAllGlobs, pathsForCurrentGlob, index) => {
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254 | if (pathsForCurrentGlob.every(pathDescriptor => pathDescriptor.behavior === SILENTLY_IGNORE && pathDescriptor.filename !== "")) {
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255 | throw new (pathsForCurrentGlob.length ? AllFilesIgnoredError : NoFilesFoundError)(globPatterns[index]);
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256 | }
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257 |
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258 | pathsForCurrentGlob.forEach(pathDescriptor => {
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259 | switch (pathDescriptor.behavior) {
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260 | case NORMAL_LINT:
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261 | pathsForAllGlobs.push({ filename: pathDescriptor.filename, ignored: false });
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262 | break;
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263 | case IGNORE_AND_WARN:
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264 | pathsForAllGlobs.push({ filename: pathDescriptor.filename, ignored: true });
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265 | break;
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266 | case SILENTLY_IGNORE:
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267 |
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268 | // do nothing
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269 | break;
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270 |
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271 | default:
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272 | throw new Error(`Unexpected file behavior for ${pathDescriptor.filename}`);
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273 | }
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274 | });
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275 |
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276 | return pathsForAllGlobs;
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277 | }, []);
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278 |
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279 | return lodash.uniqBy(allPathDescriptors, pathDescriptor => pathDescriptor.filename);
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280 | }
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281 |
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282 | module.exports = {
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283 | resolveFileGlobPatterns,
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284 | listFilesToProcess
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285 | };
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