2013-12-12 19:30:10 +00:00
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/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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#include "URLSearchParams.h"
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#include "mozilla/dom/URLSearchParamsBinding.h"
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namespace mozilla {
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namespace dom {
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2013-12-12 19:30:27 +00:00
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NS_IMPL_CYCLE_COLLECTION_WRAPPERCACHE_1(URLSearchParams, mObserver)
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NS_IMPL_CYCLE_COLLECTING_ADDREF(URLSearchParams)
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NS_IMPL_CYCLE_COLLECTING_RELEASE(URLSearchParams)
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NS_INTERFACE_MAP_BEGIN_CYCLE_COLLECTION(URLSearchParams)
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NS_WRAPPERCACHE_INTERFACE_MAP_ENTRY
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NS_INTERFACE_MAP_ENTRY(nsISupports)
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NS_INTERFACE_MAP_END
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URLSearchParams::URLSearchParams()
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: mValid(false)
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{
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SetIsDOMBinding();
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2013-12-12 19:30:10 +00:00
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}
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URLSearchParams::~URLSearchParams()
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{
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DeleteAll();
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}
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JSObject*
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URLSearchParams::WrapObject(JSContext* aCx, JS::Handle<JSObject*> aScope)
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{
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return URLSearchParamsBinding::Wrap(aCx, aScope, this);
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}
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/* static */ already_AddRefed<URLSearchParams>
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URLSearchParams::Constructor(const GlobalObject& aGlobal,
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const nsAString& aInit,
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ErrorResult& aRv)
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{
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nsRefPtr<URLSearchParams> sp = new URLSearchParams();
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sp->ParseInput(NS_ConvertUTF16toUTF8(aInit));
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return sp.forget();
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}
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/* static */ already_AddRefed<URLSearchParams>
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URLSearchParams::Constructor(const GlobalObject& aGlobal,
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URLSearchParams& aInit,
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ErrorResult& aRv)
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{
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nsRefPtr<URLSearchParams> sp = new URLSearchParams();
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aInit.mSearchParams.EnumerateRead(CopyEnumerator, sp);
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sp->mValid = true;
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return sp.forget();
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}
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void
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URLSearchParams::ParseInput(const nsACString& aInput)
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{
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// Remove all the existing data before parsing a new input.
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DeleteAll();
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nsACString::const_iterator start, end;
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aInput.BeginReading(start);
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aInput.EndReading(end);
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nsACString::const_iterator iter(start);
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while (start != end) {
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nsAutoCString string;
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if (FindCharInReadable('&', iter, end)) {
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string.Assign(Substring(start, iter));
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start = ++iter;
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} else {
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string.Assign(Substring(start, end));
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start = end;
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}
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if (string.IsEmpty()) {
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continue;
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}
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nsACString::const_iterator eqStart, eqEnd;
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string.BeginReading(eqStart);
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string.EndReading(eqEnd);
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nsACString::const_iterator eqIter(eqStart);
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nsAutoCString name;
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nsAutoCString value;
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if (FindCharInReadable('=', eqIter, eqEnd)) {
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name.Assign(Substring(eqStart, eqIter));
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++eqIter;
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value.Assign(Substring(eqIter, eqEnd));
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} else {
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name.Assign(string);
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}
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nsAutoCString decodedName;
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DecodeString(name, decodedName);
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nsAutoCString decodedValue;
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DecodeString(value, decodedValue);
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AppendInternal(NS_ConvertUTF8toUTF16(decodedName),
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NS_ConvertUTF8toUTF16(decodedValue));
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}
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mValid = true;
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}
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void
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URLSearchParams::DecodeString(const nsACString& aInput, nsACString& aOutput)
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{
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nsACString::const_iterator start, end;
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aInput.BeginReading(start);
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aInput.EndReading(end);
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while (start != end) {
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// replace '+' with U+0020
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if (*start == '+') {
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aOutput.Append(' ');
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++start;
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continue;
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}
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// Percent decode algorithm
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if (*start == '%') {
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nsACString::const_iterator first(start);
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++first;
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nsACString::const_iterator second(first);
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++second;
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#define ASCII_HEX_DIGIT( x ) \
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((x >= 0x41 && x <= 0x46) || \
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(x >= 0x61 && x <= 0x66) || \
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(x >= 0x30 && x <= 0x39))
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#define HEX_DIGIT( x ) \
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(*x >= 0x30 && *x <= 0x39 \
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? *x - 0x30 \
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: (*x >= 0x41 && *x <= 0x46 \
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? *x - 0x37 \
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: *x - 0x57))
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if (first != end && second != end &&
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ASCII_HEX_DIGIT(*first) && ASCII_HEX_DIGIT(*second)) {
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aOutput.Append(HEX_DIGIT(first) * 16 + HEX_DIGIT(second));
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start = ++second;
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continue;
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} else {
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aOutput.Append('%');
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++start;
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continue;
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}
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}
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aOutput.Append(*start);
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++start;
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}
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}
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2013-12-12 19:30:27 +00:00
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void
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URLSearchParams::CopyFromURLSearchParams(URLSearchParams& aSearchParams)
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{
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// The other SearchParams must be valid before copying its data.
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aSearchParams.Validate();
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// Remove all the existing data before parsing a new input.
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DeleteAll();
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aSearchParams.mSearchParams.EnumerateRead(CopyEnumerator, this);
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mValid = true;
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}
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2013-12-12 19:30:10 +00:00
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/* static */ PLDHashOperator
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URLSearchParams::CopyEnumerator(const nsAString& aName,
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nsTArray<nsString>* aArray,
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void *userData)
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{
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URLSearchParams* aSearchParams = static_cast<URLSearchParams*>(userData);
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nsTArray<nsString>* newArray = new nsTArray<nsString>();
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newArray->AppendElements(*aArray);
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aSearchParams->mSearchParams.Put(aName, newArray);
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return PL_DHASH_NEXT;
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}
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void
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URLSearchParams::SetObserver(URLSearchParamsObserver* aObserver)
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{
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MOZ_ASSERT(!mObserver);
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mObserver = aObserver;
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}
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void
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URLSearchParams::Validate()
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{
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MOZ_ASSERT(mValid || mObserver);
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if (!mValid) {
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mObserver->URLSearchParamsNeedsUpdates();
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MOZ_ASSERT(mValid);
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}
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}
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2013-12-12 19:30:10 +00:00
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void
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URLSearchParams::Get(const nsAString& aName, nsString& aRetval)
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{
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Validate();
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nsTArray<nsString>* array;
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if (!mSearchParams.Get(aName, &array)) {
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aRetval.Truncate();
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return;
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}
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aRetval.Assign(array->ElementAt(0));
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}
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void
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URLSearchParams::GetAll(const nsAString& aName, nsTArray<nsString>& aRetval)
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{
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Validate();
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nsTArray<nsString>* array;
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if (!mSearchParams.Get(aName, &array)) {
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return;
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}
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aRetval.AppendElements(*array);
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}
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void
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URLSearchParams::Set(const nsAString& aName, const nsAString& aValue)
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{
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// Before setting any new value we have to be sure to have all the previous
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// values in place.
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Validate();
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2013-12-12 19:30:10 +00:00
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nsTArray<nsString>* array;
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if (!mSearchParams.Get(aName, &array)) {
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array = new nsTArray<nsString>();
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array->AppendElement(aValue);
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mSearchParams.Put(aName, array);
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} else {
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array->ElementAt(0) = aValue;
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}
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NotifyObserver();
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}
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void
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URLSearchParams::Append(const nsAString& aName, const nsAString& aValue)
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{
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// Before setting any new value we have to be sure to have all the previous
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// values in place.
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Validate();
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AppendInternal(aName, aValue);
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NotifyObserver();
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}
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void
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URLSearchParams::AppendInternal(const nsAString& aName, const nsAString& aValue)
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{
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nsTArray<nsString>* array;
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if (!mSearchParams.Get(aName, &array)) {
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array = new nsTArray<nsString>();
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mSearchParams.Put(aName, array);
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}
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array->AppendElement(aValue);
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}
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bool
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URLSearchParams::Has(const nsAString& aName)
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{
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Validate();
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return mSearchParams.Get(aName, nullptr);
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}
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void
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URLSearchParams::Delete(const nsAString& aName)
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{
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// Before deleting any value we have to be sure to have all the previous
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// values in place.
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Validate();
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2013-12-12 19:30:10 +00:00
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nsTArray<nsString>* array;
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if (!mSearchParams.Get(aName, &array)) {
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return;
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}
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mSearchParams.Remove(aName);
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NotifyObserver();
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}
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2013-12-12 19:30:10 +00:00
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void
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URLSearchParams::DeleteAll()
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{
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mSearchParams.Clear();
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}
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class MOZ_STACK_CLASS SerializeData
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{
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public:
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SerializeData()
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: mFirst(true)
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{}
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nsAutoString mValue;
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bool mFirst;
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void Serialize(const nsCString& aInput)
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{
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const unsigned char* p = (const unsigned char*) aInput.get();
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while (p && *p) {
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// ' ' to '+'
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if (*p == 0x20) {
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mValue.Append(0x2B);
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// Percent Encode algorithm
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} else if (*p == 0x2A || *p == 0x2D || *p == 0x2E ||
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(*p >= 0x30 && *p <= 0x39) ||
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(*p >= 0x41 && *p <= 0x5A) || *p == 0x5F ||
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(*p >= 0x61 && *p <= 0x7A)) {
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mValue.Append(*p);
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} else {
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mValue.AppendPrintf("%%%X", *p);
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}
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++p;
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}
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}
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};
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void
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2014-01-15 14:50:18 +00:00
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URLSearchParams::Serialize(nsAString& aValue) const
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2013-12-12 19:30:27 +00:00
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{
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MOZ_ASSERT(mValid);
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SerializeData data;
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mSearchParams.EnumerateRead(SerializeEnumerator, &data);
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aValue.Assign(data.mValue);
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}
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/* static */ PLDHashOperator
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URLSearchParams::SerializeEnumerator(const nsAString& aName,
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nsTArray<nsString>* aArray,
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void *userData)
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{
|
|
|
|
SerializeData* data = static_cast<SerializeData*>(userData);
|
|
|
|
|
|
|
|
for (uint32_t i = 0, len = aArray->Length(); i < len; ++i) {
|
|
|
|
if (data->mFirst) {
|
|
|
|
data->mFirst = false;
|
|
|
|
} else {
|
|
|
|
data->mValue.Append(NS_LITERAL_STRING("&"));
|
|
|
|
}
|
|
|
|
|
|
|
|
data->Serialize(NS_ConvertUTF16toUTF8(aName));
|
|
|
|
data->mValue.Append(NS_LITERAL_STRING("="));
|
|
|
|
data->Serialize(NS_ConvertUTF16toUTF8(aArray->ElementAt(i)));
|
|
|
|
}
|
|
|
|
|
|
|
|
return PL_DHASH_NEXT;
|
|
|
|
}
|
|
|
|
|
|
|
|
void
|
|
|
|
URLSearchParams::NotifyObserver()
|
|
|
|
{
|
|
|
|
if (mObserver) {
|
|
|
|
mObserver->URLSearchParamsUpdated();
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
void
|
|
|
|
URLSearchParams::Invalidate()
|
|
|
|
{
|
|
|
|
mValid = false;
|
|
|
|
}
|
|
|
|
|
2013-12-12 19:30:10 +00:00
|
|
|
} // namespace dom
|
|
|
|
} // namespace mozilla
|