75 lines
2.5 KiB
JavaScript
75 lines
2.5 KiB
JavaScript
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/**
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* @fileoverview Common helpers for operations on filenames and paths
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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 path = require("path");
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//------------------------------------------------------------------------------
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// Private
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//------------------------------------------------------------------------------
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/**
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* Replace Windows with posix style paths
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*
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* @param {string} filepath Path to convert
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* @returns {string} Converted filepath
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*/
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function convertPathToPosix(filepath) {
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const normalizedFilepath = path.normalize(filepath);
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const posixFilepath = normalizedFilepath.replace(/\\/g, "/");
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return posixFilepath;
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}
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/**
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* Converts an absolute filepath to a relative path from a given base path
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*
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* For example, if the filepath is `/my/awesome/project/foo.bar`,
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* and the base directory is `/my/awesome/project/`,
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* then this function should return `foo.bar`.
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*
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* path.relative() does something similar, but it requires a baseDir (`from` argument).
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* This function makes it optional and just removes a leading slash if the baseDir is not given.
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*
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* It does not take into account symlinks (for now).
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*
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* @param {string} filepath Path to convert to relative path. If already relative,
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* it will be assumed to be relative to process.cwd(),
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* converted to absolute, and then processed.
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* @param {string} [baseDir] Absolute base directory to resolve the filepath from.
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* If not provided, all this function will do is remove
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* a leading slash.
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* @returns {string} Relative filepath
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*/
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function getRelativePath(filepath, baseDir) {
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let relativePath;
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if (!path.isAbsolute(filepath)) {
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filepath = path.resolve(filepath);
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}
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if (baseDir) {
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if (!path.isAbsolute(baseDir)) {
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throw new Error("baseDir should be an absolute path");
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}
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relativePath = path.relative(baseDir, filepath);
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} else {
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relativePath = filepath.replace(/^\//, "");
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}
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return relativePath;
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}
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//------------------------------------------------------------------------------
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// Public Interface
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//------------------------------------------------------------------------------
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module.exports = {
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convertPathToPosix,
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getRelativePath
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};
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