Support file:// URLs and Buffers for path args, throw when invalid
This commit is contained in:
David Humphrey (:humph) david.humphrey@senecacollege.ca
David Humphrey
parent
9c13a2d248
commit
85a8c21dc1
17
README.md
17
README.md
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@ -232,7 +232,7 @@ The node.js [path module](http://nodejs.org/api/path.html) is available via the
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identical to the node.js (see [https://github.com/browserify/path-browserify](https://github.com/browserify/path-browserify)) version with the following differences:
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* The CWD always defaults to `/`
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* No support for Windows style paths
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* No support for Windows style paths (assume you are on a POSIX system)
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* Additional utility methods (see below)
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```javascript
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@ -267,6 +267,21 @@ Filer.Path also includes the following extra methods:
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* `addTrailing(p)` returns the path `p` with a single trailing slash added
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* `removeTrailing(p)` returns the path `p` with trailing slash(es) removed
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[As with node.js](https://nodejs.org/api/fs.html#fs_file_paths), all methods below that
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accept a `path` argument as a `String` can also take a [`file://` URL](https://nodejs.org/api/fs.html#fs_url_object_support)
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or a `Buffer`. For example, all of the following cases will work the same way with Filer:
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```js
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// 1. path as a String
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fs.writeFile('/dir/file.txt', 'data', function(err) {...});
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// 2. path as a URL
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fs.writeFile(new URL('file:///dir/file.txt'), 'data', function(err) {...});
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// 3. path as a Buffer
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fs.writeFile(Buffer.from('/dir/file.txt'), 'data', function(err) {...});
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```
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#### Filer.Errors<a name="Errors"></a>
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The error objects used internally by Filer are also exposed via the `Filer.Errors` object. As much as possible
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@ -3,7 +3,6 @@ var normalize = Path.normalize;
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var dirname = Path.dirname;
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var basename = Path.basename;
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var isAbsolutePath = Path.isAbsolute;
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var isNullPath = Path.isNull;
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var shared = require('../shared.js');
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var Constants = require('../constants.js');
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@ -1627,30 +1626,6 @@ function validate_file_options(options, enc, fileMode){
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return options;
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}
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function pathCheck(path, allowRelative, callback) {
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var err;
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if(typeof allowRelative === 'function') {
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callback = allowRelative;
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allowRelative = false;
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}
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if(!path) {
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err = new Errors.EINVAL('Path must be a string', path);
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} else if(isNullPath(path)) {
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err = new Errors.EINVAL('Path must be a string without null bytes.', path);
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} else if(!allowRelative && !isAbsolutePath(path)) {
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err = new Errors.EINVAL('Path must be absolute.', path);
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}
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if(err) {
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callback(err);
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return false;
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}
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return true;
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}
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function open(context, path, flags, mode, callback) {
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if (arguments.length < 5 ){
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callback = arguments[arguments.length - 1];
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@ -1660,8 +1635,6 @@ function open(context, path, flags, mode, callback) {
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mode = validateAndMaskMode(mode, FULL_READ_WRITE_EXEC_PERMISSIONS, callback);
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}
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if(!pathCheck(path, callback)) return;
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function check_result(error, fileNode) {
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if(error) {
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callback(error);
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@ -1696,7 +1669,6 @@ function close(context, fd, callback) {
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}
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function mknod(context, path, type, callback) {
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if(!pathCheck(path, callback)) return;
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make_node(context, path, type, callback);
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}
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@ -1709,7 +1681,6 @@ function mkdir(context, path, mode, callback) {
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if(!mode) return;
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}
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if(!pathCheck(path, callback)) return;
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make_directory(context, path, callback);
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}
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@ -1719,7 +1690,6 @@ function access(context, path, mode, callback) {
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mode = Constants.fsConstants.F_OK;
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}
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if (!pathCheck(path, callback)) return;
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mode = mode | Constants.fsConstants.F_OK;
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access_file(context, path, mode, callback);
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}
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@ -1733,20 +1703,16 @@ function mkdtemp(context, prefix, options, callback) {
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let random = shared.randomChars(6);
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var path = prefix + '-' + random;
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if(!pathCheck(path, callback)) return;
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make_directory(context, path, function(error) {
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callback(error, path);
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});
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}
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function rmdir(context, path, callback) {
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if(!pathCheck(path, callback)) return;
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remove_directory(context, path, callback);
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}
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function stat(context, path, callback) {
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if(!pathCheck(path, callback)) return;
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function check_result(error, result) {
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if(error) {
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callback(error);
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@ -1778,13 +1744,10 @@ function fstat(context, fd, callback) {
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}
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function link(context, oldpath, newpath, callback) {
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if(!pathCheck(oldpath, callback)) return;
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if(!pathCheck(newpath, callback)) return;
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link_node(context, oldpath, newpath, callback);
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}
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function unlink(context, path, callback) {
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if(!pathCheck(path, callback)) return;
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unlink_node(context, path, callback);
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}
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@ -1823,8 +1786,6 @@ function readFile(context, path, options, callback) {
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callback = arguments[arguments.length - 1];
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options = validate_file_options(options, null, 'r');
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if(!pathCheck(path, callback)) return;
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var flags = validate_flags(options.flag || 'r');
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if(!flags) {
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return callback(new Errors.EINVAL('flags is not valid', path));
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@ -1897,8 +1858,6 @@ function writeFile(context, path, data, options, callback) {
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callback = arguments[arguments.length - 1];
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options = validate_file_options(options, 'utf8', 'w');
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if(!pathCheck(path, callback)) return;
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var flags = validate_flags(options.flag || 'w');
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if(!flags) {
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return callback(new Errors.EINVAL('flags is not valid', path));
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@ -1934,8 +1893,6 @@ function appendFile(context, path, data, options, callback) {
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callback = arguments[arguments.length - 1];
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options = validate_file_options(options, 'utf8', 'a');
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if(!pathCheck(path, callback)) return;
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var flags = validate_flags(options.flag || 'a');
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if(!flags) {
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return callback(new Errors.EINVAL('flags is not valid', path));
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@ -2098,7 +2055,6 @@ function fchown_file(context, ofd, uid, gid, callback) {
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}
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function getxattr(context, path, name, callback) {
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if (!pathCheck(path, callback)) return;
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getxattr_file(context, path, name, callback);
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}
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@ -2118,7 +2074,6 @@ function setxattr(context, path, name, value, flag, callback) {
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flag = null;
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}
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if (!pathCheck(path, callback)) return;
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setxattr_file(context, path, name, value, flag, callback);
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}
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@ -2141,7 +2096,6 @@ function fsetxattr(context, fd, name, value, flag, callback) {
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}
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function removexattr(context, path, name, callback) {
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if (!pathCheck(path, callback)) return;
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removexattr_file(context, path, name, callback);
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}
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@ -2199,7 +2153,6 @@ function lseek(context, fd, offset, whence, callback) {
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}
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function readdir(context, path, callback) {
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if(!pathCheck(path, callback)) return;
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read_directory(context, path, callback);
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}
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@ -2213,8 +2166,6 @@ function toUnixTimestamp(time) {
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}
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function utimes(context, path, atime, mtime, callback) {
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if(!pathCheck(path, callback)) return;
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var currentTime = Date.now();
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atime = (atime) ? toUnixTimestamp(atime) : toUnixTimestamp(currentTime);
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mtime = (mtime) ? toUnixTimestamp(mtime) : toUnixTimestamp(currentTime);
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@ -2238,7 +2189,6 @@ function futimes(context, fd, atime, mtime, callback) {
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}
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function chmod(context, path, mode, callback) {
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if(!pathCheck(path, callback)) return;
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mode = validateAndMaskMode(mode, callback);
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if(!mode) return;
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@ -2260,7 +2210,6 @@ function fchmod(context, fd, mode, callback) {
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}
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function chown(context, path, uid, gid, callback) {
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if(!pathCheck(path, callback)) return;
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if(!isUint32(uid)) {
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return callback(new Errors.EINVAL('uid must be a valid integer', uid));
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}
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@ -2290,9 +2239,6 @@ function fchown(context, fd, uid, gid, callback) {
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}
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function rename(context, oldpath, newpath, callback) {
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if(!pathCheck(oldpath, callback)) return;
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if(!pathCheck(newpath, callback)) return;
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oldpath = normalize(oldpath);
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newpath = normalize(newpath);
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@ -2407,23 +2353,14 @@ function rename(context, oldpath, newpath, callback) {
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function symlink(context, srcpath, dstpath, type, callback) {
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// NOTE: we support passing the `type` arg, but ignore it.
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callback = arguments[arguments.length - 1];
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// Special Case: allow srcpath to be relative, which we normally don't permit.
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// If the srcpath is relative, we assume it's relative to the dirpath of dstpath.
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if(!pathCheck(srcpath, true, callback)) return;
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if(!pathCheck(dstpath, callback)) return;
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make_symbolic_link(context, srcpath, dstpath, callback);
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}
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function readlink(context, path, callback) {
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if(!pathCheck(path, callback)) return;
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read_link(context, path, callback);
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}
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function lstat(context, path, callback) {
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if(!pathCheck(path, callback)) return;
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function check_result(error, result) {
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if(error) {
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callback(error);
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@ -2441,7 +2378,6 @@ function truncate(context, path, length, callback) {
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callback = arguments[arguments.length - 1];
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length = length || 0;
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if(!pathCheck(path, callback)) return;
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if(validateInteger(length, callback) !== length) return;
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truncate_file(context, path, length, callback);
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@ -1,6 +1,6 @@
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var { promisify } = require('es6-promisify');
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var isNullPath = require('../path.js').isNull;
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var Path = require('../path.js');
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var nop = require('../shared.js').nop;
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var Constants = require('../constants.js');
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@ -45,6 +45,61 @@ function defaultCallback(err) {
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console.error('Filer error: ', err);
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}
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}
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// Get a path (String) from a file:// URL. Support URL() like objects
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// https://github.com/nodejs/node/blob/968e901aff38a343b1de4addebf79fd8fa991c59/lib/internal/url.js#L1381
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function toPathIfFileURL(fileURLOrPath) {
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if(!(fileURLOrPath &&
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fileURLOrPath.protocol &&
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fileURLOrPath.pathname)) {
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return fileURLOrPath;
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}
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if(fileURLOrPath.protocol !== 'file:') {
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throw new Errors.EINVAL('only file: URLs are supported for paths', fileURLOrPath);
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}
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var pathname = fileURLOrPath.pathname;
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for (var n = 0; n < pathname.length; n++) {
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if (pathname[n] === '%') {
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var third = pathname.codePointAt(n + 2) | 0x20;
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if (pathname[n + 1] === '2' && third === 102) {
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throw new Errors.EINVAL('file: URLs must not include encoded / characters', fileURLOrPath);
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}
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}
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}
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return decodeURIComponent(pathname);
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}
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// Allow Buffers for paths. Assumes we want UTF8.
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function toPathIfBuffer(bufferOrPath) {
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return Buffer.isBuffer(bufferOrPath) ? bufferOrPath.toString() : bufferOrPath;
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}
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function validatePath(path, allowRelative) {
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if(!path) {
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return new Errors.EINVAL('Path must be a string', path);
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} else if(Path.isNull(path)) {
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return new Errors.EINVAL('Path must be a string without null bytes.', path);
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} else if(!allowRelative && !Path.isAbsolute(path)) {
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return new Errors.EINVAL('Path must be absolute.', path);
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}
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}
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function processPathArg(args, idx, allowRelative) {
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var path = args[idx];
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path = toPathIfFileURL(path);
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path = toPathIfBuffer(path);
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// Some methods specifically allow for rel paths (eg symlink with srcPath)
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var err = validatePath(path, allowRelative);
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if(err) {
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throw err;
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}
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// Overwrite path arg with converted and validated path
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args[idx] = path;
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}
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/**
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* FileSystem
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@ -124,7 +179,7 @@ function FileSystem(options, callback) {
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// We support the optional `options` arg from node, but ignore it
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this.watch = function(filename, options, listener) {
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if(isNullPath(filename)) {
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if(Path.isNull(filename)) {
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throw new Error('Path must be a string without null bytes.');
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}
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if(typeof options === 'function') {
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@ -247,50 +302,53 @@ function FileSystem(options, callback) {
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}
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});
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FileSystem.prototype.promises = {};
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/**
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* Public API for FileSystem. All node.js methods that are
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* exposed on fs.promises include `promise: true`. We also
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* include our own extra methods, but skip the fd versions
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* to match node.js, which puts these on a FileHandle object.
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* Public API for FileSystem. All node.js methods that are exposed on fs.promises
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* include `promise: true`. We also include our own extra methods, but skip the
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* fd versions to match node.js, which puts these on a `FileHandle` object.
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* Any method that deals with path argument(s) also includes the position of
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* those args in one of `absPathArgs: [...]` or `relPathArgs: [...]`, so they
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* can be processed and validated before being passed on to the method.
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*/
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[
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{ name: 'open', promises: true },
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{ name: 'access', promises: true },
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{ name: 'chmod', promises: true },
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{ name: 'open', promises: true, absPathArgs: [ 0 ] },
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{ name: 'access', promises: true, absPathArgs: [ 0 ] },
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{ name: 'chmod', promises: true, absPathArgs: [ 0 ] },
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{ name: 'fchmod' },
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{ name: 'chown', promises: true },
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{ name: 'chown', promises: true, absPathArgs: [ 0 ] },
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{ name: 'fchown' },
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{ name: 'close' },
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{ name: 'mknod', promises: true },
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{ name: 'mkdir', promises: true },
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{ name: 'mknod', promises: true, absPathArgs: [ 0 ] },
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{ name: 'mkdir', promises: true, absPathArgs: [ 0 ] },
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{ name: 'mkdtemp', promises: true },
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{ name: 'rmdir', promises: true },
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{ name: 'stat', promises: true },
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{ name: 'rmdir', promises: true, absPathArgs: [ 0 ] },
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{ name: 'stat', promises: true, absPathArgs: [ 0 ] },
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{ name: 'fstat' },
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{ name: 'fsync' },
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{ name: 'link', promises: true },
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{ name: 'unlink', promises: true },
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{ name: 'link', promises: true, absPathArgs: [0, 1] },
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{ name: 'unlink', promises: true, absPathArgs: [ 0 ] },
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{ name: 'read' },
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{ name: 'readFile', promises: true },
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{ name: 'readFile', promises: true, absPathArgs: [ 0 ] },
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{ name: 'write' },
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{ name: 'writeFile', promises: true },
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{ name: 'appendFile', promises: true },
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{ name: 'exists' },
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{ name: 'writeFile', promises: true, absPathArgs: [ 0 ] },
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{ name: 'appendFile', promises: true, absPathArgs: [ 0 ] },
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{ name: 'exists', absPathArgs: [ 0 ] },
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{ name: 'lseek' },
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{ name: 'readdir', promises: true },
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{ name: 'rename', promises: true },
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{ name: 'readlink', promises: true },
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{ name: 'symlink', promises: true },
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{ name: 'readdir', promises: true, absPathArgs: [ 0 ] },
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{ name: 'rename', promises: true, absPathArgs: [0, 1] },
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{ name: 'readlink', promises: true, absPathArgs: [ 0 ] },
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{ name: 'symlink', promises: true, relPathPargs: [ 0 ], absPathArgs: [ 1 ] },
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{ name: 'lstat', promises: true },
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{ name: 'truncate', promises: true },
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{ name: 'truncate', promises: true, absPathArgs: [ 0 ] },
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{ name: 'ftruncate' },
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{ name: 'utimes', promises: true },
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{ name: 'utimes', promises: true, absPathArgs: [ 0 ] },
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{ name: 'futimes' },
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{ name: 'setxattr', promises: true },
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{ name: 'getxattr', promises: true },
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{ name: 'setxattr', promises: true, absPathArgs: [ 0 ] },
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{ name: 'getxattr', promises: true, absPathArgs: [ 0 ] },
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{ name: 'fsetxattr' },
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{ name: 'fgetxattr' },
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{ name: 'removexattr', promises: true },
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{ name: 'removexattr', promises: true, absPathArgs: [ 0 ] },
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{ name: 'fremovexattr' }
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].forEach(function(method) {
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var methodName = method.name;
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@ -306,6 +364,14 @@ function FileSystem(options, callback) {
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|||
var missingCallback = typeof args[lastArgIndex] !== 'function';
|
||||
var callback = maybeCallback(args[lastArgIndex]);
|
||||
|
||||
// Deal with path arguments, validating and normalizing Buffer and file:// URLs
|
||||
if(method.absPathArgs) {
|
||||
method.absPathArgs.forEach(pathArg => processPathArg(args, pathArg, false));
|
||||
}
|
||||
if(method.relPathPargs) {
|
||||
method.relPathPargs.forEach(pathArg => processPathArg(args, pathArg, true));
|
||||
}
|
||||
|
||||
var error = fs.queueOrRun(function() {
|
||||
var context = fs.provider.openReadWriteContext();
|
||||
|
||||
|
|
|
|||
|
|
@ -5,23 +5,15 @@ describe('undefined and relative paths, issue270', function() {
|
|||
beforeEach(util.setup);
|
||||
afterEach(util.cleanup);
|
||||
|
||||
it('should fail with EINVAL when called on an undefined path', function(done) {
|
||||
it('should fail with EINVAL when called on an undefined path', function() {
|
||||
var fs = util.fs();
|
||||
|
||||
fs.writeFile(undefined, 'data', function(err) {
|
||||
expect(err).to.exist;
|
||||
expect(err.code).to.equal('EINVAL');
|
||||
done();
|
||||
});
|
||||
var fn = () => fs.writeFile(undefined, 'data');
|
||||
expect(fn).to.throw();
|
||||
});
|
||||
|
||||
it('should fail with EINVAL when called on a relative path', function(done) {
|
||||
it('should fail with EINVAL when called on a relative path', function() {
|
||||
var fs = util.fs();
|
||||
|
||||
fs.writeFile('relpath/file.txt', 'data', function(err) {
|
||||
expect(err).to.exist;
|
||||
expect(err.code).to.equal('EINVAL');
|
||||
done();
|
||||
});
|
||||
var fn = () => fs.writeFile('relpath/file.txt', 'data');
|
||||
expect(fn).to.throw();
|
||||
});
|
||||
});
|
||||
|
|
|
|||
|
|
@ -10,14 +10,10 @@ describe('fs.write', function() {
|
|||
expect(fs.write).to.be.a('function');
|
||||
});
|
||||
|
||||
it('should error if file path is undefined',function(done) {
|
||||
it('should error if file path is undefined', function() {
|
||||
var fs = util.fs();
|
||||
|
||||
fs.writeFile(undefined, 'data', function(error) {
|
||||
expect(error).to.exist;
|
||||
expect(error.code).to.equal('EINVAL');
|
||||
done();
|
||||
});
|
||||
var fn = () => fs.writeFile(undefined, 'data');
|
||||
expect(fn).to.throw();
|
||||
});
|
||||
|
||||
it('should write data to a file', function(done) {
|
||||
|
|
|
|||
|
|
@ -9,23 +9,18 @@ describe('node.js tests: https://github.com/joyent/node/blob/master/test/simple/
|
|||
var checks = [];
|
||||
var fnCount = 0;
|
||||
var fnTotal = 16;
|
||||
var expected = 'Path must be a string without null bytes.';
|
||||
var fs = util.fs();
|
||||
|
||||
// Make sure function fails with null path error in callback.
|
||||
function check(fn) {
|
||||
var args = Array.prototype.slice.call(arguments, 1);
|
||||
args = args.concat(function(err) {
|
||||
checks.push(function(){
|
||||
expect(err).to.exist;
|
||||
expect(err.message).to.equal(expected);
|
||||
});
|
||||
fn = () => fn.apply(fs, args);
|
||||
expect(fn).to.throw();
|
||||
|
||||
fnCount++;
|
||||
if(fnCount === fnTotal) {
|
||||
done();
|
||||
}
|
||||
});
|
||||
fn.apply(fs, args);
|
||||
}
|
||||
|
||||
check(fs.link, '/foo\u0000bar', 'foobar');
|
||||
|
|
|
|||
|
|
@ -2,6 +2,9 @@ var Filer = require('../../src');
|
|||
var util = require('../lib/test-utils.js');
|
||||
var expect = require('chai').expect;
|
||||
|
||||
// Support global URL and node's url module
|
||||
var URL = global.URL || require('url').URL;
|
||||
|
||||
describe('path resolution', function() {
|
||||
beforeEach(util.setup);
|
||||
afterEach(util.cleanup);
|
||||
|
|
@ -245,4 +248,52 @@ describe('path resolution', function() {
|
|||
expect(Path.removeTrailing('/dir/')).to.equal('/dir');
|
||||
expect(Path.removeTrailing('/dir//')).to.equal('/dir');
|
||||
});
|
||||
|
||||
it('should allow using Buffer for paths', function(done) {
|
||||
var fs = util.fs();
|
||||
var filePath = '/file';
|
||||
var bufferPath = Buffer.from(filePath);
|
||||
var data = 'data';
|
||||
|
||||
fs.writeFile(bufferPath, data, function(err) {
|
||||
if(err) throw err;
|
||||
|
||||
fs.readFile(filePath, 'utf8', function(err, result) {
|
||||
if(err) throw err;
|
||||
expect(result).to.equal(data);
|
||||
done();
|
||||
});
|
||||
});
|
||||
});
|
||||
|
||||
it('should allow using file: URLs for paths', function(done) {
|
||||
var fs = util.fs();
|
||||
var filePath = '/file';
|
||||
var fileUrl = new URL(`file://${filePath}`);
|
||||
var data = 'data';
|
||||
|
||||
fs.writeFile(fileUrl, data, function(err) {
|
||||
if(err) throw err;
|
||||
|
||||
fs.readFile(filePath, 'utf8', function(err, result) {
|
||||
if(err) throw err;
|
||||
expect(result).to.equal(data);
|
||||
done();
|
||||
});
|
||||
});
|
||||
});
|
||||
|
||||
it('should error for non file: URLs for paths', function() {
|
||||
var fs = util.fs();
|
||||
var fileUrl = new URL('http://file');
|
||||
var fn = () => fs.writeFile(fileUrl, 1);
|
||||
expect(fn).to.throw();
|
||||
});
|
||||
|
||||
it('should error if file: URLs include escaped / characters', function() {
|
||||
var fs = util.fs();
|
||||
var fileUrl = new URL('file:///p/a/t/h/%2F');
|
||||
var fn = () => fs.writeFile(fileUrl, 1);
|
||||
expect(fn).to.throw();
|
||||
});
|
||||
});
|
||||
|
|
|
|||
Loading…
Reference in New Issue