1 files changed, 264 insertions, 0 deletions
diff --git a/embedding/components/commandhandler/nsCommandParams.cpp b/embedding/components/commandhandler/nsCommandParams.cpp
new file mode 100644
index 000000000..86647d4dd
--- /dev/null
+++ b/embedding/components/commandhandler/nsCommandParams.cpp
@@ -0,0 +1,264 @@
+/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* vim: set ts=8 sts=2 et sw=2 tw=80: */
+/* 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 "xpcom-config.h"
+#include <new>
+#include "nscore.h"
+#include "nsCRT.h"
+
+#include "nsCommandParams.h"
+#include "mozilla/HashFunctions.h"
+
+using namespace mozilla;
+
+const PLDHashTableOps nsCommandParams::sHashOps =
+{
+  HashKey,
+  HashMatchEntry,
+  HashMoveEntry,
+  HashClearEntry
+};
+
+NS_IMPL_ISUPPORTS(nsCommandParams, nsICommandParams)
+
+nsCommandParams::nsCommandParams()
+  : mValuesHash(&sHashOps, sizeof(HashEntry), 2)
+{
+}
+
+nsCommandParams::~nsCommandParams()
+{
+}
+
+NS_IMETHODIMP
+nsCommandParams::GetValueType(const char* aName, int16_t* aRetVal)
+{
+  NS_ENSURE_ARG_POINTER(aRetVal);
+
+  HashEntry* foundEntry = GetNamedEntry(aName);
+  if (foundEntry) {
+    *aRetVal = foundEntry->mEntryType;
+    return NS_OK;
+  }
+  *aRetVal = eNoType;
+  return NS_ERROR_FAILURE;
+}
+
+NS_IMETHODIMP
+nsCommandParams::GetBooleanValue(const char* aName, bool* aRetVal)
+{
+  NS_ENSURE_ARG_POINTER(aRetVal);
+
+  HashEntry* foundEntry = GetNamedEntry(aName);
+  if (foundEntry && foundEntry->mEntryType == eBooleanType) {
+    *aRetVal = foundEntry->mData.mBoolean;
+    return NS_OK;
+  }
+  *aRetVal = false;
+  return NS_ERROR_FAILURE;
+}
+
+NS_IMETHODIMP
+nsCommandParams::GetLongValue(const char* aName, int32_t* aRetVal)
+{
+  NS_ENSURE_ARG_POINTER(aRetVal);
+
+  HashEntry* foundEntry = GetNamedEntry(aName);
+  if (foundEntry && foundEntry->mEntryType == eLongType) {
+    *aRetVal = foundEntry->mData.mLong;
+    return NS_OK;
+  }
+  *aRetVal = false;
+  return NS_ERROR_FAILURE;
+}
+
+NS_IMETHODIMP
+nsCommandParams::GetDoubleValue(const char* aName, double* aRetVal)
+{
+  NS_ENSURE_ARG_POINTER(aRetVal);
+
+  HashEntry* foundEntry = GetNamedEntry(aName);
+  if (foundEntry && foundEntry->mEntryType == eDoubleType) {
+    *aRetVal = foundEntry->mData.mDouble;
+    return NS_OK;
+  }
+  *aRetVal = 0.0;
+  return NS_ERROR_FAILURE;
+}
+
+NS_IMETHODIMP
+nsCommandParams::GetStringValue(const char* aName, nsAString& aRetVal)
+{
+  HashEntry* foundEntry = GetNamedEntry(aName);
+  if (foundEntry && foundEntry->mEntryType == eWStringType) {
+    NS_ASSERTION(foundEntry->mData.mString, "Null string");
+    aRetVal.Assign(*foundEntry->mData.mString);
+    return NS_OK;
+  }
+  aRetVal.Truncate();
+  return NS_ERROR_FAILURE;
+}
+
+NS_IMETHODIMP
+nsCommandParams::GetCStringValue(const char* aName, char** aRetVal)
+{
+  NS_ENSURE_ARG_POINTER(aRetVal);
+
+  HashEntry* foundEntry = GetNamedEntry(aName);
+  if (foundEntry && foundEntry->mEntryType == eStringType) {
+    NS_ASSERTION(foundEntry->mData.mCString, "Null string");
+    *aRetVal = ToNewCString(*foundEntry->mData.mCString);
+    return NS_OK;
+  }
+  *aRetVal = nullptr;
+  return NS_ERROR_FAILURE;
+}
+
+NS_IMETHODIMP
+nsCommandParams::GetISupportsValue(const char* aName, nsISupports** aRetVal)
+{
+  NS_ENSURE_ARG_POINTER(aRetVal);
+
+  HashEntry* foundEntry = GetNamedEntry(aName);
+  if (foundEntry && foundEntry->mEntryType == eISupportsType) {
+    NS_IF_ADDREF(*aRetVal = foundEntry->mISupports.get());
+    return NS_OK;
+  }
+  *aRetVal = nullptr;
+  return NS_ERROR_FAILURE;
+}
+
+NS_IMETHODIMP
+nsCommandParams::SetBooleanValue(const char* aName, bool aValue)
+{
+  HashEntry* foundEntry = GetOrMakeEntry(aName, eBooleanType);
+  if (!foundEntry) {
+    return NS_ERROR_OUT_OF_MEMORY;
+  }
+  foundEntry->mData.mBoolean = aValue;
+  return NS_OK;
+}
+
+NS_IMETHODIMP
+nsCommandParams::SetLongValue(const char* aName, int32_t aValue)
+{
+  HashEntry* foundEntry = GetOrMakeEntry(aName, eLongType);
+  if (!foundEntry) {
+    return NS_ERROR_OUT_OF_MEMORY;
+  }
+  foundEntry->mData.mLong = aValue;
+  return NS_OK;
+}
+
+NS_IMETHODIMP
+nsCommandParams::SetDoubleValue(const char* aName, double aValue)
+{
+  HashEntry* foundEntry = GetOrMakeEntry(aName, eDoubleType);
+  if (!foundEntry) {
+    return NS_ERROR_OUT_OF_MEMORY;
+  }
+  foundEntry->mData.mDouble = aValue;
+  return NS_OK;
+}
+
+NS_IMETHODIMP
+nsCommandParams::SetStringValue(const char* aName, const nsAString& aValue)
+{
+  HashEntry* foundEntry = GetOrMakeEntry(aName, eWStringType);
+  if (!foundEntry) {
+    return NS_ERROR_OUT_OF_MEMORY;
+  }
+  foundEntry->mData.mString = new nsString(aValue);
+  return NS_OK;
+}
+
+NS_IMETHODIMP
+nsCommandParams::SetCStringValue(const char* aName, const char* aValue)
+{
+  HashEntry* foundEntry = GetOrMakeEntry(aName, eStringType);
+  if (!foundEntry) {
+    return NS_ERROR_OUT_OF_MEMORY;
+  }
+  foundEntry->mData.mCString = new nsCString(aValue);
+  return NS_OK;
+}
+
+NS_IMETHODIMP
+nsCommandParams::SetISupportsValue(const char* aName, nsISupports* aValue)
+{
+  HashEntry* foundEntry = GetOrMakeEntry(aName, eISupportsType);
+  if (!foundEntry) {
+    return NS_ERROR_OUT_OF_MEMORY;
+  }
+  foundEntry->mISupports = aValue; // addrefs
+  return NS_OK;
+}
+
+NS_IMETHODIMP
+nsCommandParams::RemoveValue(const char* aName)
+{
+  mValuesHash.Remove((void*)aName);
+  return NS_OK;
+}
+
+nsCommandParams::HashEntry*
+nsCommandParams::GetNamedEntry(const char* aName)
+{
+  return static_cast<HashEntry*>(mValuesHash.Search((void*)aName));
+}
+
+nsCommandParams::HashEntry*
+nsCommandParams::GetOrMakeEntry(const char* aName, uint8_t aEntryType)
+{
+  auto foundEntry = static_cast<HashEntry*>(mValuesHash.Search((void*)aName));
+  if (foundEntry) { // reuse existing entry
+    foundEntry->Reset(aEntryType);
+    return foundEntry;
+  }
+
+  foundEntry = static_cast<HashEntry*>(mValuesHash.Add((void*)aName, fallible));
+  if (!foundEntry) {
+    return nullptr;
+  }
+
+  // Use placement new. Our ctor does not clobber keyHash, which is important.
+  new (foundEntry) HashEntry(aEntryType, aName);
+  return foundEntry;
+}
+
+PLDHashNumber
+nsCommandParams::HashKey(const void* aKey)
+{
+  return HashString((const char*)aKey);
+}
+
+bool
+nsCommandParams::HashMatchEntry(const PLDHashEntryHdr* aEntry, const void* aKey)
+{
+  const char* keyString = (const char*)aKey;
+  const HashEntry* thisEntry = static_cast<const HashEntry*>(aEntry);
+  return thisEntry->mEntryName.Equals(keyString);
+}
+
+void
+nsCommandParams::HashMoveEntry(PLDHashTable* aTable,
+                               const PLDHashEntryHdr* aFrom,
+                               PLDHashEntryHdr* aTo)
+{
+  const HashEntry* fromEntry = static_cast<const HashEntry*>(aFrom);
+  HashEntry* toEntry = static_cast<HashEntry*>(aTo);
+
+  new (toEntry) HashEntry(*fromEntry);
+
+  fromEntry->~HashEntry();
+}
+
+void
+nsCommandParams::HashClearEntry(PLDHashTable* aTable, PLDHashEntryHdr* aEntry)
+{
+  HashEntry* thisEntry = static_cast<HashEntry*>(aEntry);
+  thisEntry->~HashEntry();
+}