The Tor Browser: dom/base/URLSearchParams.cpp@b8a032363ba2 (annotated)

dom/base/URLSearchParams.cpp@b8a032363ba2 (annotated)

dom/base/URLSearchParams.cpp

Thu, 22 Jan 2015 13:21:57 +0100

author: Michael Schloh von Bennewitz <michael@schloh.com>
date: Thu, 22 Jan 2015 13:21:57 +0100
branch: TOR_BUG_9701
changeset 15: b8a032363ba2
permissions: -rw-r--r--

Incorporate requested changes from Mozilla in review:
https://bugzilla.mozilla.org/show_bug.cgi?id=1123480#c6

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

The Tor Browser / annotate

dom/base/URLSearchParams.cpp@b8a032363ba2 (annotated)

dom/base/URLSearchParams.cpp