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authorDimitri Staessens <[email protected]>2019-10-06 21:37:45 +0200
committerDimitri Staessens <[email protected]>2019-10-06 21:37:45 +0200
commit3c51c3be85bb0d1bdb87ea0d6632f1c256912f27 (patch)
treec7ccc8279b12c4f7bdbbb4270d617e48f51722e4 /node_modules/fs-extra/lib/ensure/symlink-paths.js
parent412c104bebc507bea9c94fd53b5bdc4b64cbfe31 (diff)
downloadwebsite-3c51c3be85bb0d1bdb87ea0d6632f1c256912f27.tar.gz
website-3c51c3be85bb0d1bdb87ea0d6632f1c256912f27.zip
build: Add some required modules for node
Diffstat (limited to 'node_modules/fs-extra/lib/ensure/symlink-paths.js')
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diff --git a/node_modules/fs-extra/lib/ensure/symlink-paths.js b/node_modules/fs-extra/lib/ensure/symlink-paths.js
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+'use strict'
+
+const path = require('path')
+const fs = require('graceful-fs')
+const pathExists = require('../path-exists').pathExists
+
+/**
+ * Function that returns two types of paths, one relative to symlink, and one
+ * relative to the current working directory. Checks if path is absolute or
+ * relative. If the path is relative, this function checks if the path is
+ * relative to symlink or relative to current working directory. This is an
+ * initiative to find a smarter `srcpath` to supply when building symlinks.
+ * This allows you to determine which path to use out of one of three possible
+ * types of source paths. The first is an absolute path. This is detected by
+ * `path.isAbsolute()`. When an absolute path is provided, it is checked to
+ * see if it exists. If it does it's used, if not an error is returned
+ * (callback)/ thrown (sync). The other two options for `srcpath` are a
+ * relative url. By default Node's `fs.symlink` works by creating a symlink
+ * using `dstpath` and expects the `srcpath` to be relative to the newly
+ * created symlink. If you provide a `srcpath` that does not exist on the file
+ * system it results in a broken symlink. To minimize this, the function
+ * checks to see if the 'relative to symlink' source file exists, and if it
+ * does it will use it. If it does not, it checks if there's a file that
+ * exists that is relative to the current working directory, if does its used.
+ * This preserves the expectations of the original fs.symlink spec and adds
+ * the ability to pass in `relative to current working direcotry` paths.
+ */
+
+function symlinkPaths (srcpath, dstpath, callback) {
+ if (path.isAbsolute(srcpath)) {
+ return fs.lstat(srcpath, (err, stat) => {
+ if (err) {
+ err.message = err.message.replace('lstat', 'ensureSymlink')
+ return callback(err)
+ }
+ return callback(null, {
+ 'toCwd': srcpath,
+ 'toDst': srcpath
+ })
+ })
+ } else {
+ const dstdir = path.dirname(dstpath)
+ const relativeToDst = path.join(dstdir, srcpath)
+ return pathExists(relativeToDst, (err, exists) => {
+ if (err) return callback(err)
+ if (exists) {
+ return callback(null, {
+ 'toCwd': relativeToDst,
+ 'toDst': srcpath
+ })
+ } else {
+ return fs.lstat(srcpath, (err, stat) => {
+ if (err) {
+ err.message = err.message.replace('lstat', 'ensureSymlink')
+ return callback(err)
+ }
+ return callback(null, {
+ 'toCwd': srcpath,
+ 'toDst': path.relative(dstdir, srcpath)
+ })
+ })
+ }
+ })
+ }
+}
+
+function symlinkPathsSync (srcpath, dstpath) {
+ let exists
+ if (path.isAbsolute(srcpath)) {
+ exists = fs.existsSync(srcpath)
+ if (!exists) throw new Error('absolute srcpath does not exist')
+ return {
+ 'toCwd': srcpath,
+ 'toDst': srcpath
+ }
+ } else {
+ const dstdir = path.dirname(dstpath)
+ const relativeToDst = path.join(dstdir, srcpath)
+ exists = fs.existsSync(relativeToDst)
+ if (exists) {
+ return {
+ 'toCwd': relativeToDst,
+ 'toDst': srcpath
+ }
+ } else {
+ exists = fs.existsSync(srcpath)
+ if (!exists) throw new Error('relative srcpath does not exist')
+ return {
+ 'toCwd': srcpath,
+ 'toDst': path.relative(dstdir, srcpath)
+ }
+ }
+ }
+}
+
+module.exports = {
+ symlinkPaths,
+ symlinkPathsSync
+}