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author | Dimitri Staessens <[email protected]> | 2019-10-06 21:37:45 +0200 |
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committer | Dimitri Staessens <[email protected]> | 2019-10-06 21:37:45 +0200 |
commit | 3c51c3be85bb0d1bdb87ea0d6632f1c256912f27 (patch) | |
tree | c7ccc8279b12c4f7bdbbb4270d617e48f51722e4 /node_modules/fs-extra/lib/ensure/symlink-paths.js | |
parent | 412c104bebc507bea9c94fd53b5bdc4b64cbfe31 (diff) | |
download | website-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')
-rw-r--r-- | node_modules/fs-extra/lib/ensure/symlink-paths.js | 99 |
1 files changed, 99 insertions, 0 deletions
diff --git a/node_modules/fs-extra/lib/ensure/symlink-paths.js b/node_modules/fs-extra/lib/ensure/symlink-paths.js new file mode 100644 index 0000000..4a6b78a --- /dev/null +++ b/node_modules/fs-extra/lib/ensure/symlink-paths.js @@ -0,0 +1,99 @@ +'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 +} |