icinga2/lib/config/configcompiler.hpp

110 lines
3.8 KiB
C++

/******************************************************************************
* Icinga 2 *
* Copyright (C) 2012-2014 Icinga Development Team (http://www.icinga.org) *
* *
* 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., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA. *
******************************************************************************/
#ifndef CONFIGCOMPILER_H
#define CONFIGCOMPILER_H
#include "config/i2-config.hpp"
#include "config/expression.hpp"
#include "base/debuginfo.hpp"
#include "base/registry.hpp"
#include "base/initialize.hpp"
#include "base/singleton.hpp"
#include <iostream>
#include <boost/function.hpp>
typedef union YYSTYPE YYSTYPE;
typedef void *yyscan_t;
int yylex(YYSTYPE *context, icinga::DebugInfo *di, yyscan_t scanner);
namespace icinga
{
/**
* The configuration compiler can be used to compile a configuration file
* into a number of configuration items.
*
* @ingroup config
*/
class I2_CONFIG_API ConfigCompiler
{
public:
explicit ConfigCompiler(const String& path, std::istream *input, const String& zone = String());
virtual ~ConfigCompiler(void);
Expression *Compile(void);
static Expression *CompileStream(const String& path, std::istream *stream, const String& zone = String());
static Expression *CompileFile(const String& path, const String& zone = String());
static Expression *CompileText(const String& path, const String& text, const String& zone = String());
static void AddIncludeSearchDir(const String& dir);
String GetPath(void) const;
void SetZone(const String& zone);
String GetZone(void) const;
static void CollectIncludes(std::vector<Expression *>& expressions, const String& file, const String& zone);
/* internally used methods */
Expression *HandleInclude(const String& include, bool search, const DebugInfo& debuginfo = DebugInfo());
Expression *HandleIncludeRecursive(const String& path, const String& pattern, const DebugInfo& debuginfo = DebugInfo());
void HandleLibrary(const String& library);
size_t ReadInput(char *buffer, size_t max_bytes);
void *GetScanner(void) const;
private:
String m_Path;
std::istream *m_Input;
String m_Zone;
void *m_Scanner;
bool m_Eof;
static std::vector<String> m_IncludeSearchDirs;
void InitializeScanner(void);
void DestroyScanner(void);
friend int ::yylex(YYSTYPE *context, icinga::DebugInfo *di, yyscan_t scanner);
};
class I2_CONFIG_API ConfigFragmentRegistry : public Registry<ConfigFragmentRegistry, String>
{
public:
static ConfigFragmentRegistry *GetInstance(void);
};
#define REGISTER_CONFIG_FRAGMENT(id, name, fragment) \
namespace { \
void RegisterConfigFragment(void) \
{ \
icinga::ConfigFragmentRegistry::GetInstance()->Register(name, fragment); \
} \
\
INITIALIZE_ONCE(RegisterConfigFragment); \
}
}
#endif /* CONFIGCOMPILER_H */