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// Copyright 2022 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "net/base/url_search_params.h"
#include <algorithm>
#include <string>
#include <string_view>
#include <utility>
#include <vector>
#include "base/strings/utf_string_conversions.h"
#include "net/base/url_util.h"
#include "url/gurl.h"
namespace net {
UrlSearchParams::UrlSearchParams(const GURL& url) {
for (auto it = QueryIterator(url); !it.IsAtEnd(); it.Advance()) {
// Use unescaped keys and values in order to mitigate potentially different
// representations for query search params names/values.
// E.g. a space character might be encoded as '+' or as "%20". A character
// might be encoded as a character or as its percent encoded
// representation (e.g. ?%63=2 should be the same as ?c=2). E.g. ぁ would be
// percent encoded as %E3%81%81. Unescapes the given `key` and `value`
// using URL escaping rules.
params_.emplace_back(UnescapePercentEncodedUrl(it.GetKey()),
UnescapePercentEncodedUrl(it.GetValue()));
}
}
UrlSearchParams::~UrlSearchParams() = default;
void UrlSearchParams::Sort() {
// Note: since query is ASCII and we've Unescaped the keys already,
// the URL equivalence under No-Vary-Search conditions using the normal string
// comparison should be enough.
std::stable_sort(params_.begin(), params_.end(),
[](const std::pair<std::string, std::string>& a,
const std::pair<std::string, std::string>& b) {
return a.first < b.first;
});
}
void UrlSearchParams::DeleteAllWithNames(
const base::flat_set<std::string>& names) {
std::erase_if(params_,
[&](const auto& pair) { return names.contains(pair.first); });
}
void UrlSearchParams::DeleteAllExceptWithNames(
const base::flat_set<std::string>& names) {
std::erase_if(params_,
[&](const auto& pair) { return !names.contains(pair.first); });
}
const std::vector<std::pair<std::string, std::string>>&
UrlSearchParams::params() const {
return params_;
}
} // namespace net
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