/indra/newview/llteleporthistorystorage.cpp
C++ | 255 lines | 168 code | 49 blank | 38 comment | 21 complexity | 7b798068ba8737438da1bfe0bf8f4903 MD5 | raw file
Possible License(s): LGPL-2.1
- /**
- * @file llteleporthistorystorage.cpp
- * @brief Teleport history
- *
- * $LicenseInfo:firstyear=2009&license=viewerlgpl$
- * Second Life Viewer Source Code
- * Copyright (C) 2010, Linden Research, Inc.
- *
- * This library is free software; you can redistribute it and/or
- * modify it under the terms of the GNU Lesser General Public
- * License as published by the Free Software Foundation;
- * version 2.1 of the License only.
- *
- * This library is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- * Lesser General Public License for more details.
- *
- * You should have received a copy of the GNU Lesser General Public
- * License along with this library; if not, write to the Free Software
- * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
- *
- * Linden Research, Inc., 945 Battery Street, San Francisco, CA 94111 USA
- * $/LicenseInfo$
- */
- #include "llviewerprecompiledheaders.h"
- #include "llteleporthistorystorage.h"
- #include "llsd.h"
- #include "llsdserialize.h"
- #include "lldir.h"
- #include "llteleporthistory.h"
- #include "llagent.h"
- // Max offset for two global positions to consider them as equal
- const F64 MAX_GLOBAL_POS_OFFSET = 5.0f;
- LLTeleportHistoryPersistentItem::LLTeleportHistoryPersistentItem(const LLSD& val)
- {
- mTitle = val["title"].asString();
- mGlobalPos.setValue(val["global_pos"]);
- mDate = val["date"];
- }
- LLSD LLTeleportHistoryPersistentItem::toLLSD() const
- {
- LLSD val;
- val["title"] = mTitle;
- val["global_pos"] = mGlobalPos.getValue();
- val["date"] = mDate;
- return val;
- }
- struct LLSortItemsByDate
- {
- bool operator()(const LLTeleportHistoryPersistentItem& a, const LLTeleportHistoryPersistentItem& b)
- {
- return a.mDate < b.mDate;
- }
- };
- LLTeleportHistoryStorage::LLTeleportHistoryStorage() :
- mFilename("teleport_history.txt")
- {
- mItems.clear();
- LLTeleportHistory *th = LLTeleportHistory::getInstance();
- if (th)
- th->setHistoryChangedCallback(boost::bind(&LLTeleportHistoryStorage::onTeleportHistoryChange, this));
- load();
- }
- LLTeleportHistoryStorage::~LLTeleportHistoryStorage()
- {
- }
- void LLTeleportHistoryStorage::onTeleportHistoryChange()
- {
- LLTeleportHistory *th = LLTeleportHistory::getInstance();
- if (!th)
- return;
- // Hacky sanity check. (EXT-6798)
- if (th->getItems().size() == 0)
- {
- llassert(!"Inconsistent teleport history state");
- return;
- }
- const LLTeleportHistoryItem &item = th->getItems()[th->getCurrentItemIndex()];
- addItem(item.mTitle, item.mGlobalPos);
- save();
- }
- void LLTeleportHistoryStorage::purgeItems()
- {
- mItems.clear();
- mHistoryChangedSignal(-1);
- }
- void LLTeleportHistoryStorage::addItem(const std::string title, const LLVector3d& global_pos)
- {
- addItem(title, global_pos, LLDate::now());
- }
- bool LLTeleportHistoryStorage::compareByTitleAndGlobalPos(const LLTeleportHistoryPersistentItem& a, const LLTeleportHistoryPersistentItem& b)
- {
- return a.mTitle == b.mTitle && (a.mGlobalPos - b.mGlobalPos).length() < MAX_GLOBAL_POS_OFFSET;
- }
- void LLTeleportHistoryStorage::addItem(const std::string title, const LLVector3d& global_pos, const LLDate& date)
- {
- LLTeleportHistoryPersistentItem item(title, global_pos, date);
- slurl_list_t::iterator item_iter = std::find_if(mItems.begin(), mItems.end(),
- boost::bind(&LLTeleportHistoryStorage::compareByTitleAndGlobalPos, this, _1, item));
- // If there is such item already, remove it, since new item is more recent
- S32 removed_index = -1;
- if (item_iter != mItems.end())
- {
- removed_index = item_iter - mItems.begin();
- mItems.erase(item_iter);
- }
- mItems.push_back(item);
- // Check whether sorting is needed
- if (mItems.size() > 1)
- {
- item_iter = mItems.end();
- item_iter--;
- item_iter--;
- // If second to last item is more recent than last, then resort items
- if (item_iter->mDate > item.mDate)
- {
- removed_index = -1;
- std::sort(mItems.begin(), mItems.end(), LLSortItemsByDate());
- }
- }
- mHistoryChangedSignal(removed_index);
- }
- void LLTeleportHistoryStorage::removeItem(S32 idx)
- {
- if (idx < 0 || idx >= (S32)mItems.size())
- return;
- mItems.erase (mItems.begin() + idx);
- }
- void LLTeleportHistoryStorage::save()
- {
- // build filename for each user
- std::string resolvedFilename = gDirUtilp->getExpandedFilename(LL_PATH_PER_SL_ACCOUNT, mFilename);
- // open the history file for writing
- llofstream file (resolvedFilename);
- if (!file.is_open())
- {
- llwarns << "can't open teleport history file \"" << mFilename << "\" for writing" << llendl;
- return;
- }
- for (size_t i=0; i<mItems.size(); i++)
- {
- LLSD s_item = mItems[i].toLLSD();
- file << LLSDOStreamer<LLSDNotationFormatter>(s_item) << std::endl;
- }
- file.close();
- }
- void LLTeleportHistoryStorage::load()
- {
- // build filename for each user
- std::string resolved_filename = gDirUtilp->getExpandedFilename(LL_PATH_PER_SL_ACCOUNT, mFilename);
- // open the history file for reading
- llifstream file(resolved_filename);
- if (!file.is_open())
- {
- llwarns << "can't load teleport history from file \"" << mFilename << "\"" << llendl;
- return;
- }
- // remove current entries before we load over them
- mItems.clear();
- // the parser's destructor is protected so we cannot create in the stack.
- LLPointer<LLSDParser> parser = new LLSDNotationParser();
- std::string line;
- while (std::getline(file, line))
- {
- LLSD s_item;
- std::istringstream iss(line);
- if (parser->parse(iss, s_item, line.length()) == LLSDParser::PARSE_FAILURE)
- {
- llinfos << "Parsing saved teleport history failed" << llendl;
- break;
- }
- mItems.push_back(s_item);
- }
- file.close();
- std::sort(mItems.begin(), mItems.end(), LLSortItemsByDate());
- mHistoryChangedSignal(-1);
- }
- void LLTeleportHistoryStorage::dump() const
- {
- llinfos << "Teleport history storage dump (" << mItems.size() << " items):" << llendl;
- for (size_t i=0; i<mItems.size(); i++)
- {
- std::stringstream line;
- line << i << ": " << mItems[i].mTitle;
- line << " global pos: " << mItems[i].mGlobalPos;
- line << " date: " << mItems[i].mDate;
- llinfos << line.str() << llendl;
- }
- }
- boost::signals2::connection LLTeleportHistoryStorage::setHistoryChangedCallback(history_callback_t cb)
- {
- return mHistoryChangedSignal.connect(cb);
- }
- void LLTeleportHistoryStorage::goToItem(S32 idx)
- {
- // Validate specified index.
- if (idx < 0 || idx >= (S32)mItems.size())
- {
- llwarns << "Invalid teleport history index (" << idx << ") specified" << llendl;
- dump();
- return;
- }
- // Attempt to teleport to the requested item.
- gAgent.teleportViaLocation(mItems[idx].mGlobalPos);
- }