leper
afecbf02f3
Config settings in a section are stored as "sectionname.setting" internally. Do not write section headers when writing config files as we would need to write settings without a dot first or ignore them. This can be changed once all settings belong to a section. This was SVN commit r15986.
404 lines
9.8 KiB
C++
404 lines
9.8 KiB
C++
/* Copyright (C) 2014 Wildfire Games.
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* This file is part of 0 A.D.
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*
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* 0 A.D. is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 2 of the License, or
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* (at your option) any later version.
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*
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* 0 A.D. is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with 0 A.D. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include "precompiled.h"
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#include <boost/algorithm/string.hpp>
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#include "CLogger.h"
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#include "ConfigDB.h"
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#include "Filesystem.h"
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#include "ThreadUtil.h"
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#include "lib/allocators/shared_ptr.h"
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typedef std::map<CStr, CConfigValueSet> TConfigMap;
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TConfigMap CConfigDB::m_Map[CFG_LAST];
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VfsPath CConfigDB::m_ConfigFile[CFG_LAST];
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static pthread_mutex_t cfgdb_mutex = PTHREAD_MUTEX_INITIALIZER;
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CConfigDB::CConfigDB()
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{
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// Recursive mutex needed for WriteFile
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pthread_mutexattr_t attr;
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int err;
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err = pthread_mutexattr_init(&attr);
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ENSURE(err == 0);
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err = pthread_mutexattr_settype(&attr, PTHREAD_MUTEX_RECURSIVE);
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ENSURE(err == 0);
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err = pthread_mutex_init(&cfgdb_mutex, &attr);
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ENSURE(err == 0);
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err = pthread_mutexattr_destroy(&attr);
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ENSURE(err == 0);
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}
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#define CHECK_NS(rval)\
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do {\
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if (ns < 0 || ns >= CFG_LAST)\
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{\
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debug_warn(L"CConfigDB: Invalid ns value");\
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return rval;\
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}\
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} while (false)
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namespace {
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template<typename T> void Get(const CStr& value, T& ret)
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{
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std::stringstream ss(value);
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ss >> ret;
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}
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template<> void Get<>(const CStr& value, bool& ret)
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{
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ret = value == "true";
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}
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template<> void Get<>(const CStr& value, std::string& ret)
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{
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ret = value;
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}
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std::string EscapeString(const CStr& str)
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{
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std::string ret;
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for (size_t i = 0; i < str.length(); ++i)
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{
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if (str[i] == '\\')
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ret += "\\\\";
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else if (str[i] == '"')
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ret += "\\\"";
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else
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ret += str[i];
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}
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return ret;
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}
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} // namespace
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#define GETVAL(type)\
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void CConfigDB::GetValue(EConfigNamespace ns, const CStr& name, type& value)\
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{\
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CHECK_NS();\
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CScopeLock s(&cfgdb_mutex);\
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TConfigMap::iterator it = m_Map[CFG_COMMAND].find(name);\
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if (it != m_Map[CFG_COMMAND].end())\
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{\
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Get(it->second[0], value);\
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return;\
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}\
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for (int search_ns = ns; search_ns >= 0; search_ns--)\
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{\
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it = m_Map[search_ns].find(name);\
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if (it != m_Map[search_ns].end())\
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{\
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Get(it->second[0], value);\
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return;\
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}\
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}\
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}
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GETVAL(bool)
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GETVAL(int)
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GETVAL(float)
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GETVAL(double)
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GETVAL(std::string)
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#undef GETVAL
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void CConfigDB::GetValues(EConfigNamespace ns, const CStr& name, CConfigValueSet& values)
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{
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CHECK_NS();
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CScopeLock s(&cfgdb_mutex);
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TConfigMap::iterator it = m_Map[CFG_COMMAND].find(name);
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if (it != m_Map[CFG_COMMAND].end())
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{
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values = it->second;
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return;
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}
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for (int search_ns = ns; search_ns >= 0; search_ns--)
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{
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it = m_Map[search_ns].find(name);
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if (it != m_Map[search_ns].end())
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{
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values = it->second;
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return;
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}
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}
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}
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EConfigNamespace CConfigDB::GetValueNamespace(EConfigNamespace ns, const CStr& name)
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{
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CHECK_NS(CFG_LAST);
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CScopeLock s(&cfgdb_mutex);
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TConfigMap::iterator it = m_Map[CFG_COMMAND].find(name);
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if (it != m_Map[CFG_COMMAND].end())
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return CFG_COMMAND;
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for (int search_ns = ns; search_ns >= 0; search_ns--)
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{
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it = m_Map[search_ns].find(name);
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if (it != m_Map[search_ns].end())
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return (EConfigNamespace)search_ns;
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}
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return CFG_LAST;
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}
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std::map<CStr, CConfigValueSet> CConfigDB::GetValuesWithPrefix(EConfigNamespace ns, const CStr& prefix)
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{
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CScopeLock s(&cfgdb_mutex);
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std::map<CStr, CConfigValueSet> ret;
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CHECK_NS(ret);
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// Loop upwards so that values in later namespaces can override
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// values in earlier namespaces
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for (int search_ns = 0; search_ns <= ns; search_ns++)
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{
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for (TConfigMap::iterator it = m_Map[search_ns].begin(); it != m_Map[search_ns].end(); ++it)
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{
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if (boost::algorithm::starts_with(it->first, prefix))
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ret[it->first] = it->second;
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}
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}
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for (TConfigMap::iterator it = m_Map[CFG_COMMAND].begin(); it != m_Map[CFG_COMMAND].end(); ++it)
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{
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if (boost::algorithm::starts_with(it->first, prefix))
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ret[it->first] = it->second;
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}
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return ret;
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}
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void CConfigDB::SetValueString(EConfigNamespace ns, const CStr& name, const CStr& value)
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{
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CHECK_NS();
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CScopeLock s(&cfgdb_mutex);
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TConfigMap::iterator it = m_Map[ns].find(name);
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if (it == m_Map[ns].end())
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it = m_Map[ns].insert(m_Map[ns].begin(), make_pair(name, CConfigValueSet(1)));
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it->second[0] = value;
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}
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void CConfigDB::SetConfigFile(EConfigNamespace ns, const VfsPath& path)
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{
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CHECK_NS();
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CScopeLock s(&cfgdb_mutex);
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m_ConfigFile[ns] = path;
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}
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bool CConfigDB::Reload(EConfigNamespace ns)
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{
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CHECK_NS(false);
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CScopeLock s(&cfgdb_mutex);
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shared_ptr<u8> buffer;
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size_t buflen;
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{
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// Handle missing files quietly
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if (g_VFS->GetFileInfo(m_ConfigFile[ns], NULL) < 0)
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{
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LOGMESSAGE(L"Cannot find config file \"%ls\" - ignoring", m_ConfigFile[ns].string().c_str());
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return false;
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}
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LOGMESSAGE(L"Loading config file \"%ls\"", m_ConfigFile[ns].string().c_str());
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Status ret = g_VFS->LoadFile(m_ConfigFile[ns], buffer, buflen);
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if (ret != INFO::OK)
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{
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LOGERROR(L"CConfigDB::Reload(): vfs_load for \"%ls\" failed: return was %lld", m_ConfigFile[ns].string().c_str(), (long long)ret);
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return false;
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}
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}
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TConfigMap newMap;
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char *filebuf = (char*)buffer.get();
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char *filebufend = filebuf+buflen;
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bool quoted = false;
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CStr header;
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CStr name;
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CStr value;
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int line = 1;
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std::vector<CStr> values;
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for (char* pos = filebuf; pos < filebufend; ++pos)
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{
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switch (*pos)
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{
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case '\n':
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case ';':
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break; // We finished parsing this line
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case ' ':
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case '\r':
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continue; // ignore
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case '[':
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header.clear();
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for (++pos; pos < filebufend && *pos != '\n' && *pos != ']'; ++pos)
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header.push_back(*pos);
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if (pos == filebufend || *pos == '\n')
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{
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LOGERROR(L"Config header with missing close tag encountered on line %d in '%ls'", line, m_ConfigFile[ns].string().c_str());
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header.clear();
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++line;
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continue;
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}
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LOGMESSAGE(L"Found config header '%hs'", header.c_str());
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header.push_back('.');
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while (++pos < filebufend && *pos != '\n' && *pos != ';')
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if (*pos != ' ' && *pos != '\r')
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{
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LOGERROR(L"Config settings on the same line as a header on line %d in '%ls'", line, m_ConfigFile[ns].string().c_str());
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break;
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}
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while (pos < filebufend && *pos != '\n')
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++pos;
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++line;
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continue;
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case '=':
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// Parse parameters (comma separated, possibly quoted)
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for (++pos; pos < filebufend && *pos != '\n' && *pos != ';'; ++pos)
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{
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switch (*pos)
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{
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case '"':
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quoted = true;
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// parse until not quoted anymore
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for (++pos; pos < filebufend && *pos != '\n' && *pos != '"'; ++pos)
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{
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if (*pos == '\\' && ++pos == filebufend)
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{
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LOGERROR(L"Escape character at end of input (line %d in '%ls')", line, m_ConfigFile[ns].string().c_str());
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break;
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}
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value.push_back(*pos);
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}
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if (pos < filebufend && *pos == '"')
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quoted = false;
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else
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--pos; // We should terminate the outer loop too
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break;
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case '\r':
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case ' ':
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break; // ignore
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case ',':
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if (!value.empty())
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values.push_back(value);
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value.clear();
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break;
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default:
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value.push_back(*pos);
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break;
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}
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}
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if (quoted) // We ignore the invalid parameter
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LOGERROR(L"Unmatched quote while parsing config file '%ls' on line %d", m_ConfigFile[ns].string().c_str(), line);
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else if (!value.empty())
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values.push_back(value);
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value.clear();
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quoted = false;
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break; // We are either at the end of the line, or we still have a comment to parse
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default:
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name.push_back(*pos);
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continue;
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}
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// Consume the rest of the line
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while (pos < filebufend && *pos != '\n')
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++pos;
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// Store the setting
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if (!name.empty() && !values.empty())
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{
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CStr key(header + name);
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newMap[key] = values;
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if (key == "lobby.password")
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LOGMESSAGE(L"Loaded config string \"%hs\"", key.c_str());
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else
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{
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std::string vals;
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for (size_t i = 0; i < newMap[key].size() - 1; ++i)
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vals += "\"" + EscapeString(newMap[key][i]) + "\", ";
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vals += "\"" + EscapeString(newMap[key][values.size()-1]) + "\"";
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LOGMESSAGE(L"Loaded config string \"%hs\" = %hs", key.c_str(), vals.c_str());
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}
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}
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else if (!name.empty())
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LOGERROR(L"Encountered config setting '%hs' without value while parsing '%ls' on line %d", name.c_str(), m_ConfigFile[ns].string().c_str(), line);
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name.clear();
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values.clear();
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++line;
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}
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if (!name.empty())
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LOGERROR(L"Config file does not have a new line after the last config setting '%hs'", name.c_str());
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m_Map[ns].swap(newMap);
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return true;
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}
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bool CConfigDB::WriteFile(EConfigNamespace ns)
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{
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CHECK_NS(false);
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CScopeLock s(&cfgdb_mutex);
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return WriteFile(ns, m_ConfigFile[ns]);
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}
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bool CConfigDB::WriteFile(EConfigNamespace ns, const VfsPath& path)
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{
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CHECK_NS(false);
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CScopeLock s(&cfgdb_mutex);
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shared_ptr<u8> buf;
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AllocateAligned(buf, 1*MiB, maxSectorSize);
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char* pos = (char*)buf.get();
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TConfigMap &map = m_Map[ns];
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for (TConfigMap::const_iterator it = map.begin(); it != map.end(); ++it)
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{
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size_t i;
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pos += sprintf(pos, "%s = ", it->first.c_str());
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for (i = 0; i < it->second.size() - 1; ++i)
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pos += sprintf(pos, "\"%s\", ", EscapeString(it->second[i]).c_str());
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pos += sprintf(pos, "\"%s\"\n", EscapeString(it->second[i]).c_str());
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}
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const size_t len = pos - (char*)buf.get();
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Status ret = g_VFS->CreateFile(path, buf, len);
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if (ret < 0)
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{
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LOGERROR(L"CConfigDB::WriteFile(): CreateFile \"%ls\" failed (error: %d)", path.string().c_str(), (int)ret);
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return false;
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}
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return true;
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}
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#undef CHECK_NS
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