106 lines
3.8 KiB
JavaScript
106 lines
3.8 KiB
JavaScript
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/**
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* @fileoverview Tools for obtaining SourceCode objects.
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* @author Ian VanSchooten
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*/
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"use strict";
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//------------------------------------------------------------------------------
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// Requirements
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//------------------------------------------------------------------------------
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const CLIEngine = require("../cli-engine"),
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globUtils = require("./glob-utils"),
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baseDefaultOptions = require("../../conf/default-cli-options");
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const debug = require("debug")("eslint:source-code-utils");
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//------------------------------------------------------------------------------
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// Helpers
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//------------------------------------------------------------------------------
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/**
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* Get the SourceCode object for a single file
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* @param {string} filename The fully resolved filename to get SourceCode from.
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* @param {Object} options A CLIEngine options object.
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* @returns {Array} Array of the SourceCode object representing the file
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* and fatal error message.
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*/
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function getSourceCodeOfFile(filename, options) {
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debug("getting sourceCode of", filename);
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const opts = Object.assign({}, options, { rules: {} });
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const cli = new CLIEngine(opts);
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const results = cli.executeOnFiles([filename]);
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if (results && results.results[0] && results.results[0].messages[0] && results.results[0].messages[0].fatal) {
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const msg = results.results[0].messages[0];
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throw new Error(`(${filename}:${msg.line}:${msg.column}) ${msg.message}`);
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}
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const sourceCode = cli.linter.getSourceCode();
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return sourceCode;
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}
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//------------------------------------------------------------------------------
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// Public Interface
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//------------------------------------------------------------------------------
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/**
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* This callback is used to measure execution status in a progress bar
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* @callback progressCallback
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* @param {number} The total number of times the callback will be called.
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*/
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/**
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* Gets the SourceCode of a single file, or set of files.
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* @param {string[]|string} patterns A filename, directory name, or glob, or an array of them
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* @param {Object} [providedOptions] A CLIEngine options object. If not provided, the default cli options will be used.
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* @param {progressCallback} [providedCallback] Callback for reporting execution status
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* @returns {Object} The SourceCode of all processed files.
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*/
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function getSourceCodeOfFiles(patterns, providedOptions, providedCallback) {
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const sourceCodes = {};
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const globPatternsList = typeof patterns === "string" ? [patterns] : patterns;
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let options, callback;
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const defaultOptions = Object.assign({}, baseDefaultOptions, { cwd: process.cwd() });
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if (typeof providedOptions === "undefined") {
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options = defaultOptions;
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callback = null;
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} else if (typeof providedOptions === "function") {
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callback = providedOptions;
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options = defaultOptions;
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} else if (typeof providedOptions === "object") {
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options = Object.assign({}, defaultOptions, providedOptions);
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callback = providedCallback;
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}
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debug("constructed options:", options);
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const filenames = globUtils.listFilesToProcess(globPatternsList, options)
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.filter(fileInfo => !fileInfo.ignored)
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.reduce((files, fileInfo) => files.concat(fileInfo.filename), []);
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if (filenames.length === 0) {
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debug(`Did not find any files matching pattern(s): ${globPatternsList}`);
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}
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filenames.forEach(filename => {
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const sourceCode = getSourceCodeOfFile(filename, options);
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if (sourceCode) {
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debug("got sourceCode of", filename);
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sourceCodes[filename] = sourceCode;
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}
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if (callback) {
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callback(filenames.length); // eslint-disable-line callback-return
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}
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});
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return sourceCodes;
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}
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module.exports = {
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getSourceCodeOfFiles
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};
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