C++ LLViewerTextEditor::exportBuffer方法代码示例

// virtual
void LLPreviewNotecard::saveAs()
{
	std::string default_filename("untitled.notecard");
	const LLInventoryItem *item = getItem();
	if(item)
	{
	//	gAssetStorage->getAssetData(item->getAssetUUID(), LLAssetType::AT_NOTECARD, LLPreviewNotecard::gotAssetForSave, this, TRUE);
		default_filename = LLDir::getScrubbedFileName(item->getName());
	}

	LLFilePicker& file_picker = LLFilePicker::instance();
	if( !file_picker.getSaveFile( LLFilePicker::FFSAVE_NOTECARD, default_filename ) )
	{
		// User canceled or we failed to acquire save file.
		return;
	}
	// remember the user-approved/edited file name.
	std::string filename = file_picker.getFirstFile();

	LLViewerTextEditor* editor = getChild<LLViewerTextEditor>("Notecard Editor");

	std::string buffer;
	if (!editor->exportBuffer(buffer))
	{
		// FIXME: Notify the user!
		return;
	}

	S32 size = buffer.length() + 1;

	std::ofstream export_file(filename.c_str(), std::ofstream::binary);
	export_file.write(buffer.c_str(), size);
	export_file.close();
}

void LLPreviewNotecard::saveAs_continued(AIFilePicker* filepicker)
{
	if (!filepicker->hasFilename())
		return;

	LLViewerTextEditor* editor = findChild<LLViewerTextEditor>("Notecard Editor");

	std::string buffer;
	if (editor && !editor->exportBuffer(buffer))
	{
		// FIXME: Notify the user!
		return;
	}

	S32 size = buffer.length();

	std::string filename = filepicker->getFilename();
	std::ofstream export_file(filename.c_str(), std::ofstream::binary);
	export_file.write(buffer.c_str(), size);
	export_file.close();
}

bool LLPreviewNotecard::saveIfNeeded(LLInventoryItem* copyitem)
{
	if(!gAssetStorage)
	{
		llwarns << "Not connected to an asset storage system." << llendl;
		return false;
	}

	
	LLViewerTextEditor* editor = findChild<LLViewerTextEditor>("Notecard Editor");

	if (editor && !editor->isPristine())
	{
		// We need to update the asset information
		LLTransactionID tid;
		LLAssetID asset_id;
		tid.generate();
		asset_id = tid.makeAssetID(gAgent.getSecureSessionID());

		LLVFile file(gVFS, asset_id, LLAssetType::AT_NOTECARD, LLVFile::APPEND);

		std::string buffer;
		if (!editor->exportBuffer(buffer))
		{
			return false;
		}

		editor->makePristine();

		S32 size = buffer.length() + 1;
		file.setMaxSize(size);
		file.write((U8*)buffer.c_str(), size);

		const LLInventoryItem* item = getItem();
		// save it out to database
		if (item)
		{			
			std::string agent_url = gAgent.getRegion()->getCapability("UpdateNotecardAgentInventory");
			std::string task_url = gAgent.getRegion()->getCapability("UpdateNotecardTaskInventory");
			if (mObjectUUID.isNull() && !agent_url.empty())
			{
				// Saving into agent inventory
				mAssetStatus = PREVIEW_ASSET_LOADING;
				setEnabled(FALSE);
				LLSD body;
				body["item_id"] = mItemUUID;
				llinfos << "Saving notecard " << mItemUUID
					<< " into agent inventory via " << agent_url << llendl;
				LLHTTPClient::post(agent_url, body,
					new LLUpdateAgentInventoryResponder(body, asset_id, LLAssetType::AT_NOTECARD));
			}
			else if (!mObjectUUID.isNull() && !task_url.empty())
			{
				// Saving into task inventory
				mAssetStatus = PREVIEW_ASSET_LOADING;
				setEnabled(FALSE);
				LLSD body;
				body["task_id"] = mObjectUUID;
				body["item_id"] = mItemUUID;
				llinfos << "Saving notecard " << mItemUUID << " into task "
					<< mObjectUUID << " via " << task_url << llendl;
				LLHTTPClient::post(task_url, body,
					new LLUpdateTaskInventoryResponder(body, asset_id, LLAssetType::AT_NOTECARD));
			}
			else if (gAssetStorage)
			{
				LLSaveNotecardInfo* info = new LLSaveNotecardInfo(this, mItemUUID, mObjectUUID,
																tid, copyitem);
				gAssetStorage->storeAssetData(tid, LLAssetType::AT_NOTECARD,
												&onSaveComplete,
												(void*)info,
												FALSE);
			}
		}
	}
	return true;
}