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// Copyright 2015 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "core/dom/URLSearchParams.h"
#include "core/dom/DOMURL.h"
#include "platform/network/FormDataEncoder.h"
#include "platform/weborigin/KURL.h"
#include "wtf/text/TextEncoding.h"
namespace blink {
namespace {
class URLSearchParamsIterationSource final
: public PairIterable<String, String>::IterationSource {
public:
URLSearchParamsIterationSource(Vector<std::pair<String, String>> params)
: m_params(params), m_current(0) {}
bool next(ScriptState*,
String& key,
String& value,
ExceptionState&) override {
if (m_current >= m_params.size())
return false;
key = m_params[m_current].first;
value = m_params[m_current].second;
m_current++;
return true;
}
private:
Vector<std::pair<String, String>> m_params;
size_t m_current;
};
} // namespace
URLSearchParams* URLSearchParams::create(const URLSearchParamsInit& init) {
if (init.isUSVString()) {
const String& queryString = init.getAsUSVString();
if (queryString.startsWith('?'))
return new URLSearchParams(queryString.substring(1));
return new URLSearchParams(queryString);
}
if (init.isURLSearchParams())
return new URLSearchParams(init.getAsURLSearchParams());
DCHECK(init.isNull());
return new URLSearchParams(String());
}
URLSearchParams::URLSearchParams(const String& queryString, DOMURL* urlObject)
: m_urlObject(urlObject) {
if (!queryString.isEmpty())
setInput(queryString);
}
URLSearchParams::URLSearchParams(URLSearchParams* searchParams) {
DCHECK(searchParams);
m_params = searchParams->m_params;
}
URLSearchParams::~URLSearchParams() {}
DEFINE_TRACE(URLSearchParams) {
visitor->trace(m_urlObject);
}
#if DCHECK_IS_ON()
DOMURL* URLSearchParams::urlObject() const {
return m_urlObject;
}
#endif
void URLSearchParams::runUpdateSteps() {
if (!m_urlObject)
return;
if (m_urlObject->isInUpdate())
return;
m_urlObject->setSearchInternal(toString());
}
static String decodeString(String input) {
return decodeURLEscapeSequences(input.replace('+', ' '));
}
void URLSearchParams::setInput(const String& queryString) {
m_params.clear();
size_t start = 0;
size_t queryStringLength = queryString.length();
while (start < queryStringLength) {
size_t nameStart = start;
size_t nameValueEnd = queryString.find('&', start);
if (nameValueEnd == kNotFound)
nameValueEnd = queryStringLength;
if (nameValueEnd > start) {
size_t endOfName = queryString.find('=', start);
if (endOfName == kNotFound || endOfName > nameValueEnd)
endOfName = nameValueEnd;
String name =
decodeString(queryString.substring(nameStart, endOfName - nameStart));
String value;
if (endOfName != nameValueEnd)
value = decodeString(
queryString.substring(endOfName + 1, nameValueEnd - endOfName - 1));
if (value.isNull())
value = "";
m_params.push_back(std::make_pair(name, value));
}
start = nameValueEnd + 1;
}
runUpdateSteps();
}
String URLSearchParams::toString() const {
Vector<char> encodedData;
encodeAsFormData(encodedData);
return String(encodedData.data(), encodedData.size());
}
void URLSearchParams::append(const String& name, const String& value) {
m_params.push_back(std::make_pair(name, value));
runUpdateSteps();
}
void URLSearchParams::deleteAllWithName(const String& name) {
for (size_t i = 0; i < m_params.size();) {
if (m_params[i].first == name)
m_params.remove(i);
else
i++;
}
runUpdateSteps();
}
String URLSearchParams::get(const String& name) const {
for (const auto& param : m_params) {
if (param.first == name)
return param.second;
}
return String();
}
Vector<String> URLSearchParams::getAll(const String& name) const {
Vector<String> result;
for (const auto& param : m_params) {
if (param.first == name)
result.push_back(param.second);
}
return result;
}
bool URLSearchParams::has(const String& name) const {
for (const auto& param : m_params) {
if (param.first == name)
return true;
}
return false;
}
void URLSearchParams::set(const String& name, const String& value) {
bool foundMatch = false;
for (size_t i = 0; i < m_params.size();) {
// If there are any name-value whose name is 'name', set
// the value of the first such name-value pair to 'value'
// and remove the others.
if (m_params[i].first == name) {
if (!foundMatch) {
m_params[i++].second = value;
foundMatch = true;
} else {
m_params.remove(i);
}
} else {
i++;
}
}
// Otherwise, append a new name-value pair to the list.
if (!foundMatch)
append(name, value);
else
runUpdateSteps();
}
void URLSearchParams::encodeAsFormData(Vector<char>& encodedData) const {
for (const auto& param : m_params)
FormDataEncoder::addKeyValuePairAsFormData(
encodedData, param.first.utf8(), param.second.utf8(),
EncodedFormData::FormURLEncoded, FormDataEncoder::DoNotNormalizeCRLF);
}
PassRefPtr<EncodedFormData> URLSearchParams::toEncodedFormData() const {
Vector<char> encodedData;
encodeAsFormData(encodedData);
return EncodedFormData::create(encodedData.data(), encodedData.size());
}
PairIterable<String, String>::IterationSource* URLSearchParams::startIteration(
ScriptState*,
ExceptionState&) {
return new URLSearchParamsIterationSource(m_params);
}
} // namespace blink
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