+/*
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program 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 General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ */
+
+/*
+ * Author : Maxim Mamontov <faust@stargazer.dp.ua>
+ */
+
+#include "config.h"
+
+#include "stg/common.h"
+
+#include <vector>
+#include <stdexcept>
+
+#include <strings.h> // strncasecmp
+
+using STG::Config;
+
+namespace
+{
+
+struct ParserError : public std::runtime_error
+{
+ ParserError(size_t pos, const std::string& message)
+ : runtime_error("Parsing error at position " + x2str(pos) + ". " + message),
+ position(pos),
+ error(message)
+ {}
+
+ size_t position;
+ std::string error;
+};
+
+size_t skipSpaces(const std::string& value, size_t start)
+{
+ while (start < value.length() && std::isspace(value[start]))
+ ++start;
+ return start;
+}
+
+size_t checkChar(const std:string& value, size_t start, char ch)
+{
+ if (start >= value.length())
+ throw ParserError(start, "Unexpected end of string. Expected '" + std::string(ch) + "'.");
+ if (value[start] != ch)
+ throw ParserError(start, "Expected '" + std::string(ch) + "', got '" + std::string(value[start]) + "'.");
+ return start + 1;
+}
+
+std::pair<size_t, std::string> readString(const std::string& value, size_t start)
+{
+ std::string dest;
+ while (start < value.length() && !std::isspace(value[start]))
+ dest.push_back(value[start++]);
+ if (dest.empty()) {
+ if (start == value.length())
+ throw ParserError(start, "Unexpected end of string. Expected string.");
+ else
+ throw ParserError(start, "Unexpected whitespace. Expected string.");
+ }
+ return dest;
+}
+
+Config::Pairs toPairs(const std::vector<std::string>& values)
+{
+ if (values.empty())
+ return Config::Pairs();
+ std::string value(values[0]);
+ Config::Pairs res;
+ size_t start = 0;
+ while (start < value.size()) {
+ Config::Pair pair;
+ start = skipSpaces(value, start);
+ size_t pairStart = start;
+ start = checkChar(value, start, '(');
+ std::pair<size_t, std::string> key = readString(value, start);
+ start = key.first;
+ pair.first = key.second;
+ start = skipSpaces(value, start);
+ start = checkChar(value, start, ',')
+ start = skipSpaces(value, start);
+ std::pair<size_t, std::string> value = readString(value, start);
+ start = key.first;
+ pair.second = value.second;
+ start = skipSpaces(value, start);
+ start = checkChar(value, start, ')');
+ if (res.find(pair.first) != res.end())
+ throw ParserError(pairStart, "Duplicate field.");
+ res.insert(pair);
+ }
+ return res;
+}
+
+bool toBool(const std::vector<std::string>& values)
+{
+ if (values.empty())
+ return false;
+ std::string value(values[0]);
+ return strncasecmp(value.c_str(), "yes", 3) == 0;
+}
+
+std::string toString(const std::vector<std::string>& values)
+{
+ if (values.empty())
+ return "";
+ return values[0];
+}
+
+template <typename T>
+T toInt(const std::vector<std::string>& values)
+{
+ if (values.empty())
+ return 0;
+ T res = 0;
+ if (srt2x(values[0], res) == 0)
+ return res;
+ return 0;
+}
+
+Config::Pairs parseVector(const std::string& paramName, const MODULE_SETTINGS& params)
+{
+ for (size_t i = 0; i < params.moduleParams.size(); ++i)
+ if (params.moduleParams[i].first == paramName)
+ return toPairs(params.moduleParams[i].second);
+ return Config::Pairs();
+}
+
+bool parseBool(const std::string& paramName, const MODULE_SETTINGS& params)
+{
+ for (size_t i = 0; i < params.moduleParams.size(); ++i)
+ if (params.moduleParams[i].first == paramName)
+ return toBool(params.moduleParams[i].second);
+ return false;
+}
+
+std::string parseString(const std::string& paramName, const MODULE_SETTINGS& params)
+{
+ for (size_t i = 0; i < params.moduleParams.size(); ++i)
+ if (params.moduleParams[i].first == paramName)
+ return toString(params.moduleParams[i].second);
+ return "";
+}
+
+template <typename T>
+T parseInt(const std::string& paramName, const MODULE_SETTINGS& params)
+{
+ for (size_t i = 0; i < params.moduleParams.size(); ++i)
+ if (params.moduleParams[i].first == paramName)
+ return toInt<T>(params.moduleParams[i].second);
+ return 0;
+}
+
+} // namespace anonymous
+
+Config::Config(const MODULE_SETTINGS& settings)
+ : match(parseVector("match", settings)),
+ modify(parseVector("modify", settings)),
+ reply(parseVector("reply", settings)),
+ verbose(parseBool("verbose", settings)),
+ bindAddress(parseString("bind_address", settings)),
+ port(parseInt<uint16_t>("port", settings)),
+ key(parseString("key", settings))
+{
+}
git.stg.codes / stg.git / commitdiff