lllocationhistory.cpp
上传用户:king477883
上传日期:2021-03-01
资源大小:9553k
文件大小:5k
- /**
- * @file lllocationhistory.cpp
- * @brief Typed locations history
- *
- * $LicenseInfo:firstyear=2009&license=viewergpl$
- *
- * Copyright (c) 2009-2010, Linden Research, Inc.
- *
- * Second Life Viewer Source Code
- * The source code in this file ("Source Code") is provided by Linden Lab
- * to you under the terms of the GNU General Public License, version 2.0
- * ("GPL"), unless you have obtained a separate licensing agreement
- * ("Other License"), formally executed by you and Linden Lab. Terms of
- * the GPL can be found in doc/GPL-license.txt in this distribution, or
- * online at http://secondlifegrid.net/programs/open_source/licensing/gplv2
- *
- * There are special exceptions to the terms and conditions of the GPL as
- * it is applied to this Source Code. View the full text of the exception
- * in the file doc/FLOSS-exception.txt in this software distribution, or
- * online at
- * http://secondlifegrid.net/programs/open_source/licensing/flossexception
- *
- * By copying, modifying or distributing this software, you acknowledge
- * that you have read and understood your obligations described above,
- * and agree to abide by those obligations.
- *
- * ALL LINDEN LAB SOURCE CODE IS PROVIDED "AS IS." LINDEN LAB MAKES NO
- * WARRANTIES, EXPRESS, IMPLIED OR OTHERWISE, REGARDING ITS ACCURACY,
- * COMPLETENESS OR PERFORMANCE.
- * $/LicenseInfo$
- */
- #include "llviewerprecompiledheaders.h"
- #include "lllocationhistory.h"
- #include <iomanip> // for std::setw()
- #include "llui.h"
- #include "llsd.h"
- #include "llsdserialize.h"
- LLLocationHistory::LLLocationHistory() :
- mFilename("typed_locations.txt")
- {
- }
- void LLLocationHistory::addItem(const LLLocationHistoryItem& item) {
- static LLUICachedControl<S32> max_items("LocationHistoryMaxSize", 100);
- // check if this item doesn't duplicate any existing one
- location_list_t::iterator item_iter = std::find(mItems.begin(), mItems.end(),item);
- if(item_iter != mItems.end()) // if it already exists, erase the old one
- {
- mItems.erase(item_iter);
- }
- mItems.push_back(item);
-
- // If the vector size exceeds the maximum, purge the oldest items (at the start of the mItems vector).
- if ((S32)mItems.size() > max_items)
- {
- mItems.erase(mItems.begin(), mItems.end()-max_items);
- }
- llassert((S32)mItems.size() <= max_items);
- }
- /*
- * @brief Try to find item in history.
- * If item has been founded, it will be places into end of history.
- * @return true - item has founded
- */
- bool LLLocationHistory::touchItem(const LLLocationHistoryItem& item) {
- bool result = false;
- location_list_t::iterator item_iter = std::find(mItems.begin(), mItems.end(), item);
- // the last used item should be the first in the history
- if (item_iter != mItems.end()) {
- mItems.erase(item_iter);
- mItems.push_back(item);
- result = true;
- }
- return result;
- }
- void LLLocationHistory::removeItems()
- {
- mItems.clear();
- }
- bool LLLocationHistory::getMatchingItems(std::string substring, location_list_t& result) const
- {
- // *TODO: an STL algorithm would look nicer
- result.clear();
- std::string needle = substring;
- LLStringUtil::toLower(needle);
- for (location_list_t::const_iterator it = mItems.begin(); it != mItems.end(); ++it)
- {
- std::string haystack = it->getLocation();
- LLStringUtil::toLower(haystack);
- if (haystack.find(needle) != std::string::npos)
- result.push_back(*it);
- }
-
- return result.size();
- }
- void LLLocationHistory::dump() const
- {
- llinfos << "Location history dump:" << llendl;
- int i = 0;
- for (location_list_t::const_iterator it = mItems.begin(); it != mItems.end(); ++it, ++i)
- {
- llinfos << "#" << std::setw(2) << std::setfill('0') << i << ": " << it->getLocation() << llendl;
- }
- }
- void LLLocationHistory::save() const
- {
- // build filename for each user
- std::string resolved_filename = gDirUtilp->getExpandedFilename(LL_PATH_PER_SL_ACCOUNT, mFilename);
- if (resolved_filename.empty())
- {
- llinfos << "can't get path to location history filename - probably not logged in yet." << llendl;
- return;
- }
- // open a file for writing
- llofstream file (resolved_filename);
- if (!file.is_open())
- {
- llwarns << "can't open location history file "" << mFilename << "" for writing" << llendl;
- return;
- }
- for (location_list_t::const_iterator it = mItems.begin(); it != mItems.end(); ++it)
- {
- file << LLSDOStreamer<LLSDNotationFormatter>((*it).toLLSD()) << std::endl;
- }
- file.close();
- }
- void LLLocationHistory::load()
- {
- llinfos << "Loading location history." << llendl;
-
- // build filename for each user
- std::string resolved_filename = gDirUtilp->getExpandedFilename(LL_PATH_PER_SL_ACCOUNT, mFilename);
- llifstream file(resolved_filename);
- if (!file.is_open())
- {
- llwarns << "can't load location history from file "" << mFilename << """ << llendl;
- return;
- }
-
- removeItems();
-
- // add each line in the file to the list
- std::string line;
- LLPointer<LLSDParser> parser = new LLSDNotationParser();
- 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();
-
- mLoadedSignal();
- }