/** * @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); }