InitConfigFileParser.hpp
上传用户:romrleung
上传日期:2022-05-23
资源大小:18897k
文件大小:4k
源码类别:
MySQL数据库
开发平台:
Visual C++
- /* Copyright (C) 2003 MySQL AB
- 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 */
- #ifndef InitConfigFileParser_H
- #define InitConfigFileParser_H
- #include <ndb_global.h>
- #include <Properties.hpp>
- #include <ConfigValues.hpp>
- class Config;
- class ConfigInfo;
- /**
- * @class InitConfigFileParser
- * @brief Reads initial config file and returns Config object
- *
- * This class contains one public method InitConfigFileParser::parseConfig,
- * which reads an initial configuration file and returns a Config
- * object if the config file has correct syntax and semantic.
- */
- class InitConfigFileParser {
- FILE * m_errstream;
- public:
- /**
- * Constructor
- */
- InitConfigFileParser(FILE * errstream = stdout);
- ~InitConfigFileParser();
- /**
- * Reads the initial configuration file, checks syntax and semantic
- * and stores internally the values of all parameters.
- *
- * @returns Config or NULL on failure
- * @note must be freed by caller
- */
- Config * parseConfig(FILE * file);
- Config * parseConfig(const char * filename);
- /**
- * Parser context struct
- */
- enum ContextSectionType { Undefined, Section, DefaultSection };
- /**
- * Context = Which section in init config file we are currently parsing
- */
- struct Context {
- Context(const ConfigInfo *, FILE * out);
- ~Context();
- ContextSectionType type; ///< Section type (e.g. default section,section)
- char fname[256]; ///< Section name occuring in init config file
- char pname[256]; ///< Section name stored in properties object
- Uint32 m_lineno; ///< Current line no in config file
- Uint32 m_sectionLineno; ///< Where did current section start
- const ConfigInfo * m_info; // The config info
- Properties * m_config; // The config object
- Properties * m_defaults; // The user defaults
- Properties * m_currentSection; // The current section I'm in
- const Properties * m_userDefaults; // The defaults of this section
- const Properties * m_systemDefaults; // The syst. defaults for this section
- const Properties * m_currentInfo; // The "info" for this section
- Properties m_userProperties; // User properties (temporary values)
- ConfigValuesFactory m_configValues; //
- public:
- FILE * m_errstream;
- void reportError(const char * msg, ...);
- void reportWarning(const char * msg, ...);
- };
- static bool convertStringToUint64(const char* s, Uint64& val, Uint32 log10base = 0);
- static bool convertStringToBool(const char* s, bool& val);
- private:
- /**
- * Check if line only contains space/comments
- * @param line: The line to check
- * @return true if spaces/comments only, false otherwise
- */
- bool isEmptyLine(const char* line) const;
- /**
- * Checks if line contains a section header
- * @param line: String to search
- * @return section header if matching some section header, NULL otherwise
- */
- char* parseSectionHeader(const char* line) const;
- /**
- * Checks if line contains a default header
- * @param line: String to search
- * @return section header if matching some section header, NULL otherwise
- */
- char* parseDefaultSectionHeader(const char* line) const;
- bool parseNameValuePair(Context&, const char* line);
- bool storeNameValuePair(Context&, const char* fname, const char* value);
- bool storeSection(Context&);
- const Properties* getSection(const char * name, const Properties* src);
- /**
- * Information about parameters (min, max values etc)
- */
- ConfigInfo* m_info;
- };
- #endif // InitConfigFileParser_H