gecko/dom/bluetooth/BluetoothUtils.cpp

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/* -*- Mode: c++; c-basic-offset: 2; indent-tabs-mode: nil; tab-width: 40 -*- */
/* vim: set ts=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 "base/basictypes.h"
#include "BluetoothReplyRunnable.h"
#include "BluetoothUtils.h"
#include "jsapi.h"
#include "mozilla/Scoped.h"
#include "mozilla/dom/bluetooth/BluetoothTypes.h"
#include "nsContentUtils.h"
#include "nsIScriptContext.h"
#include "nsISystemMessagesInternal.h"
#include "nsString.h"
#include "nsTArray.h"
BEGIN_BLUETOOTH_NAMESPACE
bool
SetJsObject(JSContext* aContext,
const BluetoothValue& aValue,
JSObject* aObj)
{
MOZ_ASSERT(aContext && aObj);
if (aValue.type() != BluetoothValue::TArrayOfBluetoothNamedValue) {
NS_WARNING("SetJsObject: Invalid parameter type");
return false;
}
const nsTArray<BluetoothNamedValue>& arr =
aValue.get_ArrayOfBluetoothNamedValue();
for (uint32_t i = 0; i < arr.Length(); i++) {
jsval val;
const BluetoothValue& v = arr[i].value();
JSString* jsData;
switch(v.type()) {
case BluetoothValue::TnsString:
jsData = JS_NewUCStringCopyN(aContext,
v.get_nsString().BeginReading(),
v.get_nsString().Length());
NS_ENSURE_TRUE(jsData, false);
val = STRING_TO_JSVAL(jsData);
break;
case BluetoothValue::Tuint32_t:
val = INT_TO_JSVAL(v.get_uint32_t());
break;
case BluetoothValue::Tbool:
val = BOOLEAN_TO_JSVAL(v.get_bool());
break;
default:
NS_WARNING("SetJsObject: Parameter is not handled");
break;
}
if (!JS_SetProperty(aContext, aObj,
NS_ConvertUTF16toUTF8(arr[i].name()).get(),
&val)) {
NS_WARNING("Failed to set property");
return false;
}
}
return true;
}
nsString
GetObjectPathFromAddress(const nsAString& aAdapterPath,
const nsAString& aDeviceAddress)
{
// The object path would be like /org/bluez/2906/hci0/dev_00_23_7F_CB_B4_F1,
// and the adapter path would be the first part of the object path, according
// to the example above, it's /org/bluez/2906/hci0.
nsString devicePath(aAdapterPath);
devicePath.AppendLiteral("/dev_");
devicePath.Append(aDeviceAddress);
devicePath.ReplaceChar(':', '_');
return devicePath;
}
nsString
GetAddressFromObjectPath(const nsAString& aObjectPath)
{
// The object path would be like /org/bluez/2906/hci0/dev_00_23_7F_CB_B4_F1,
// and the adapter path would be the first part of the object path, according
// to the example above, it's /org/bluez/2906/hci0.
nsString address(aObjectPath);
int addressHead = address.RFind("/") + 5;
MOZ_ASSERT(addressHead + BLUETOOTH_ADDRESS_LENGTH == address.Length());
address.Cut(0, addressHead);
address.ReplaceChar('_', ':');
return address;
}
bool
BroadcastSystemMessage(const nsAString& aType,
const InfallibleTArray<BluetoothNamedValue>& aData)
{
JSContext* cx = nsContentUtils::GetSafeJSContext();
NS_ASSERTION(!::JS_IsExceptionPending(cx),
"Shouldn't get here when an exception is pending!");
JSAutoRequest jsar(cx);
JSObject* obj = JS_NewObject(cx, NULL, NULL, NULL);
if (!obj) {
NS_WARNING("Failed to new JSObject for system message!");
return false;
}
if (!SetJsObject(cx, aData, obj)) {
NS_WARNING("Failed to set properties of system message!");
return false;
}
nsCOMPtr<nsISystemMessagesInternal> systemMessenger =
do_GetService("@mozilla.org/system-message-internal;1");
NS_ENSURE_TRUE(systemMessenger, false);
systemMessenger->BroadcastMessage(aType, OBJECT_TO_JSVAL(obj));
return true;
}
void
DispatchBluetoothReply(BluetoothReplyRunnable* aRunnable,
const BluetoothValue& aValue,
const nsAString& aErrorStr)
{
// Reply will be deleted by the runnable after running on main thread
BluetoothReply* reply;
if (!aErrorStr.IsEmpty()) {
nsString err(aErrorStr);
reply = new BluetoothReply(BluetoothReplyError(err));
} else {
MOZ_ASSERT(aValue.type() != BluetoothValue::T__None);
reply = new BluetoothReply(BluetoothReplySuccess(aValue));
}
aRunnable->SetReply(reply);
if (NS_FAILED(NS_DispatchToMainThread(aRunnable))) {
NS_WARNING("Failed to dispatch to main thread!");
}
}
void
ParseAtCommand(const nsACString& aAtCommand, const int aStart,
nsTArray<nsCString>& aRetValues)
{
int length = aAtCommand.Length();
int begin = aStart;
for (int i = aStart; i < length; ++i) {
// Use ',' as separator
if (aAtCommand[i] == ',') {
nsCString tmp(nsDependentCSubstring(aAtCommand, begin, i - begin));
aRetValues.AppendElement(tmp);
begin = i + 1;
}
}
nsCString tmp(nsDependentCSubstring(aAtCommand, begin));
aRetValues.AppendElement(tmp);
}
END_BLUETOOTH_NAMESPACE