Leaf Petersen
745f112ef6
Opt an initial batch of files under samples, samples-dev, utils, and runtime/tools/dartfuzz out of null safety in preparation for switching the flag on by default. Change-Id: Icdfd52a5a969e678a7205903332f73fe3841c223 Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/166960 Reviewed-by: Daco Harkes <dacoharkes@google.com> Commit-Queue: Leaf Petersen <leafp@google.com>
82 lines
2.6 KiB
Dart
82 lines
2.6 KiB
Dart
// Copyright (c) 2012, the Dart project authors. Please see the AUTHORS file
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// for details. All rights reserved. Use of this source code is governed by a
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// BSD-style license that can be found in the LICENSE file.
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// @dart = 2.9
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part of utilslib;
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/**
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* A parsed URI, inspired by:
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* https://github.com/google/closure-library/blob/master/closure/goog/uri/uri.js
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*/
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class SwarmUri {
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/**
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* Parses a URL query string into a map. Because you can have multiple values
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* for the same parameter name, each parameter name maps to a list of
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* values. For example, '?a=b&c=d&a=e' would be parsed as
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* [{'a':['b','e'],'c':['d']}].
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*/
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// TODO(jmesserly): consolidate with Uri.parse(...)
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static Map<String, List<String>> parseQuery(String queryString) {
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final queryParams = new Map<String, List<String>>();
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if (queryString.startsWith('?')) {
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final params = queryString.substring(1, queryString.length).split('&');
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for (final param in params) {
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List<String> parts = param.split('=');
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if (parts.length == 2) {
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// TODO(hiltonc) the name and value should be URL decoded.
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String name = parts[0];
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String value = parts[1];
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// Create a list of values for this name if not yet done.
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List values = queryParams[name];
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if (values == null) {
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values = new List();
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queryParams[name] = values;
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}
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values.add(value);
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}
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}
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}
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return queryParams;
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}
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/**
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* Percent-encodes a string for use as a query parameter in a URI.
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*/
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// TODO(rnystrom): Get rid of this when the real encodeURIComponent()
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// function is available within Dart.
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static String encodeComponent(String component) {
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if (component == null) return component;
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// TODO(terry): Added b/5096547 to track replace should by default behave
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// like replaceAll to avoid a problematic usage pattern.
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return component
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.replaceAll(':', '%3A')
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.replaceAll('/', '%2F')
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.replaceAll('?', '%3F')
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.replaceAll('=', '%3D')
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.replaceAll('&', '%26')
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.replaceAll(' ', '%20');
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}
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/**
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* Decodes a string used a query parameter by replacing percent-encoded
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* sequences with their original characters.
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*/
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// TODO(jmesserly): replace this with a better implementation
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static String decodeComponent(String component) {
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if (component == null) return component;
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return component
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.replaceAll('%3A', ':')
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.replaceAll('%2F', '/')
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.replaceAll('%3F', '?')
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.replaceAll('%3D', '=')
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.replaceAll('%26', '&')
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.replaceAll('%20', ' ');
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}
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}
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