2 * This program is free software; you can redistribute it and/or modify
3 * it under the terms of the GNU General Public License as published by
4 * the Free Software Foundation; either version 2 of the License, or
5 * (at your option) any later version.
7 * This program is distributed in the hope that it will be useful,
8 * but WITHOUT ANY WARRANTY; without even the implied warranty of
9 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
10 * GNU General Public License for more details.
12 * You should have received a copy of the GNU General Public License
13 * along with this program; if not, write to the Free Software
14 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
18 * Author : Maxim Mamontov <faust@stargazer.dp.ua>
23 #include "stg/common.h"
28 #include <strings.h> // strncasecmp
35 struct ParserError : public std::runtime_error
37 ParserError(size_t pos, const std::string& message)
38 : runtime_error("Parsing error at position " + x2str(pos) + ". " + message),
42 virtual ~ParserError() throw() {}
48 size_t skipSpaces(const std::string& value, size_t start)
50 while (start < value.length() && std::isspace(value[start]))
55 size_t checkChar(const std::string& value, size_t start, char ch)
57 if (start >= value.length())
58 throw ParserError(start, "Unexpected end of string. Expected '" + std::string(1, ch) + "'.");
59 if (value[start] != ch)
60 throw ParserError(start, "Expected '" + std::string(1, ch) + "', got '" + std::string(1, value[start]) + "'.");
64 std::pair<size_t, std::string> readString(const std::string& value, size_t start)
67 while (start < value.length() && !std::isspace(value[start]))
68 dest.push_back(value[start++]);
70 if (start == value.length())
71 throw ParserError(start, "Unexpected end of string. Expected string.");
73 throw ParserError(start, "Unexpected whitespace. Expected string.");
75 return std::make_pair(start, dest);
78 Config::Pairs toPairs(const std::vector<std::string>& values)
81 return Config::Pairs();
82 std::string value(values[0]);
85 while (start < value.size()) {
87 start = skipSpaces(value, start);
88 size_t pairStart = start;
89 start = checkChar(value, start, '(');
90 std::pair<size_t, std::string> key = readString(value, start);
92 pair.first = key.second;
93 start = skipSpaces(value, start);
94 start = checkChar(value, start, ',');
95 start = skipSpaces(value, start);
96 std::pair<size_t, std::string> val = readString(value, start);
98 pair.second = val.second;
99 start = skipSpaces(value, start);
100 start = checkChar(value, start, ')');
101 if (res.find(pair.first) != res.end())
102 throw ParserError(pairStart, "Duplicate field.");
108 bool toBool(const std::vector<std::string>& values)
112 std::string value(values[0]);
113 return strncasecmp(value.c_str(), "yes", 3) == 0;
116 std::string toString(const std::vector<std::string>& values)
123 template <typename T>
124 T toInt(const std::vector<std::string>& values)
129 if (str2x(values[0], res) == 0)
134 Config::Pairs parseVector(const std::string& paramName, const MODULE_SETTINGS& params)
136 for (size_t i = 0; i < params.moduleParams.size(); ++i)
137 if (params.moduleParams[i].param == paramName)
138 return toPairs(params.moduleParams[i].value);
139 return Config::Pairs();
142 bool parseBool(const std::string& paramName, const MODULE_SETTINGS& params)
144 for (size_t i = 0; i < params.moduleParams.size(); ++i)
145 if (params.moduleParams[i].param == paramName)
146 return toBool(params.moduleParams[i].value);
150 std::string parseString(const std::string& paramName, const MODULE_SETTINGS& params)
152 for (size_t i = 0; i < params.moduleParams.size(); ++i)
153 if (params.moduleParams[i].param == paramName)
154 return toString(params.moduleParams[i].value);
158 template <typename T>
159 T parseInt(const std::string& paramName, const MODULE_SETTINGS& params)
161 for (size_t i = 0; i < params.moduleParams.size(); ++i)
162 if (params.moduleParams[i].param == paramName)
163 return toInt<T>(params.moduleParams[i].value);
167 } // namespace anonymous
169 Config::Config(const MODULE_SETTINGS& settings)
170 : match(parseVector("match", settings)),
171 modify(parseVector("modify", settings)),
172 reply(parseVector("reply", settings)),
173 verbose(parseBool("verbose", settings)),
174 bindAddress(parseString("bind_address", settings)),
175 portStr(parseString("port", settings)),
176 port(parseInt<uint16_t>("port", settings)),
177 key(parseString("key", settings))