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/**
* @file llsyntaxid.h
* @brief Contains methods to access the LSLSyntaxId feature and LSLSyntax capability
* to use the appropriate syntax file for the current region's LSL version.
* @author Ima Mechanique, Cinder Roxley
*
* $LicenseInfo:firstyear=2013&license=viewerlgpl$
* Second Life Viewer Source Code
* Copyright (C) 2013, 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
* $/LicenseInfo$
*/
#pragma once
#include "llviewerprecompiledheaders.h"
#include "llsingleton.h"
#include "lleventcoro.h"
#include "llcoros.h"
class LLSyntaxDefCache : public LLSingleton<LLSyntaxDefCache>
{
LLSINGLETON(LLSyntaxDefCache) = default;
public:
using syntax_id_changed_signal_t = boost::signals2::signal<void()>;
using syntax_id_changed_h = boost::signals2::connection;
class cache_names_t
{
public:
using name_path_map_t = std::unordered_map<std::string, std::string>;
using iterator = name_path_map_t::iterator;
using const_iterator = name_path_map_t::const_iterator;
cache_names_t() = default;
~cache_names_t() = default;
std::string getPath(const std::string &name) const
{
auto it = mNamePathMap.find(name);
if (it != mNamePathMap.end())
{
return it->second;
}
return std::string();
}
bool hasName(const std::string &name) const
{
return mNamePathMap.find(name) != mNamePathMap.end();
}
void addNamePath(const std::string &name, const std::string &path)
{
mNamePathMap[name] = path;
}
iterator begin() { return mNamePathMap.begin(); }
const_iterator begin() const { return mNamePathMap.begin(); }
iterator end() { return mNamePathMap.end(); }
const_iterator end() const { return mNamePathMap.end(); }
size_t size() const { return mNamePathMap.size(); }
void clear() { mNamePathMap.clear(); }
bool empty() const { return mNamePathMap.empty(); }
iterator find(const std::string &name) { return mNamePathMap.find(name); }
const_iterator find(const std::string &name) const { return mNamePathMap.find(name); }
private:
name_path_map_t mNamePathMap;
};
bool keywordFetchInProgress() const { return !mInflightFetches.empty(); }
LLSD getLSLKeywords() const { return mLSLKeywords; };
LLSD getLuaKeywords() const { return mLuaKeywords; };
LLUUID getSyntaxID() const { return mSyntaxId; }
syntax_id_changed_h addSyntaxIDCallback(const syntax_id_changed_signal_t::slot_type& cb);
bool checkCacheAndLoad(const LLUUID& syntax_id);
static std::string buildCacheDirectoryName(const LLUUID& syntax_id);
using const_iterator = cache_names_t::const_iterator;
const_iterator begin() const { return mFileCachePaths.begin(); }
const_iterator end() const { return mFileCachePaths.end(); }
size_t size() const { return mFileCachePaths.size(); }
bool empty() const { return mFileCachePaths.empty(); }
const_iterator find(const std::string& name) const { return mFileCachePaths.find(name); }
std::vector<std::string> getCacheFileNames() const;
bool hasCacheFile(const std::string& name) const { return mFileCachePaths.hasName(name); }
std::string loadCacheFile(const std::string& name) const;
LLSD loadCacheFileAsLLSD(const std::string& name) const;
protected:
void initSingleton() override;
void cleanupSingleton() override;
private:
bool updateSyntaxId();
static bool isSupportedVersion(const LLSD& content);
void handleRegionChanged();
void handleCapsReceived(const LLUUID& region_uuid);
void setKeywords(const LLSD& lsl, const LLSD& lua) { mLSLKeywords = lsl; mLuaKeywords = lua; };
void loadKeywordsIntoLLSD();
void fetchKeywords();
void fetchKeywordsFileCoro(std::string url, LLUUID syntax_id);
void fetchKeywordsDefsCoro(std::string url, LLUUID syntax_id);
bool checkLocalCache(const LLUUID& syntax_id) const;
void buildDefaultCache() { buildCachePaths(LLUUID::null); }
void buildCachePaths(const LLUUID &syntax_id);
bool writeCacheFile(const std::string &fileSpec, const LLSD& content_ref);
static LLSD loadDeserializedCacheFile(const std::string& file_path);
std::set<LLUUID> mInflightFetches;
syntax_id_changed_signal_t mSyntaxIDChangedSignal;
syntax_id_changed_h mRegionChangedCallback;
std::string mCapabilityURL;
cache_names_t mFileCachePaths;
LLUUID mSyntaxId;
LLSD mLSLKeywords;
LLSD mLuaKeywords;
bool mUseDefsCap{ false };
};
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