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/*=========================================================================
Program: CMake - Cross-Platform Makefile Generator
Module: $RCSfile: cmCacheManager.h,v $
Language: C++
Date: $Date: 2008-03-07 16:43:47 $
Version: $Revision: 1.49 $
Copyright (c) 2002 Kitware, Inc., Insight Consortium. All rights reserved.
See Copyright.txt or http://www.cmake.org/HTML/Copyright.html for details.
This software is distributed WITHOUT ANY WARRANTY; without even
the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
PURPOSE. See the above copyright notices for more information.
=========================================================================*/
#ifndef cmCacheManager_h
#define cmCacheManager_h
#include "cmStandardIncludes.h"
class cmMakefile;
class cmMarkAsAdvancedCommand;
/** \class cmCacheManager
* \brief Control class for cmake's cache
*
* Load and Save CMake cache files.
*
*/
class cmCacheManager
{
public:
cmCacheManager();
class CacheIterator;
friend class cmCacheManager::CacheIterator;
enum CacheEntryType{ BOOL=0, PATH, FILEPATH, STRING, INTERNAL,STATIC,
UNINITIALIZED };
private:
struct CacheEntry
{
std::string Value;
CacheEntryType Type;
std::map<cmStdString,cmStdString> Properties;
bool Initialized;
CacheEntry() : Value(""), Type(UNINITIALIZED), Initialized(false)
{}
};
public:
class CacheIterator
{
public:
void Begin();
bool Find(const char*);
bool IsAtEnd() const;
void Next();
const char *GetName() const {
return this->Position->first.c_str(); }
const char* GetProperty(const char*) const ;
bool GetPropertyAsBool(const char*) const ;
bool PropertyExists(const char*) const;
void SetProperty(const char* property, const char* value);
void SetProperty(const char* property, bool value);
const char* GetValue() const { return this->GetEntry().Value.c_str(); }
bool GetValueAsBool() const;
void SetValue(const char*);
CacheEntryType GetType() const { return this->GetEntry().Type; }
void SetType(CacheEntryType ty) { this->GetEntry().Type = ty; }
bool Initialized() { return this->GetEntry().Initialized; }
cmCacheManager &Container;
std::map<cmStdString, CacheEntry>::iterator Position;
CacheIterator(cmCacheManager &cm) : Container(cm) {
this->Begin();
}
CacheIterator(cmCacheManager &cm, const char* key) : Container(cm)
{
if ( key )
{
this->Find(key);
}
}
private:
CacheEntry const& GetEntry() const { return this->Position->second; }
CacheEntry& GetEntry() { return this->Position->second; }
};
///! return an iterator to iterate through the cache map
cmCacheManager::CacheIterator NewIterator()
{
return CacheIterator(*this);
}
/**
* Types for the cache entries. These are useful as
* hints for a cache editor program. Path should bring
* up a file chooser, BOOL a check box, and STRING a
* text entry box, FILEPATH is a full path to a file which
* can be different than just a path input
*/
static CacheEntryType StringToType(const char*);
static const char* TypeToString(CacheEntryType);
///! Load a cache for given makefile. Loads from ouput home.
bool LoadCache(cmMakefile*);
///! Load a cache for given makefile. Loads from path/CMakeCache.txt.
bool LoadCache(const char* path);
bool LoadCache(const char* path, bool internal);
bool LoadCache(const char* path, bool internal,
std::set<cmStdString>& excludes,
std::set<cmStdString>& includes);
///! Save cache for given makefile. Saves to ouput home CMakeCache.txt.
bool SaveCache(cmMakefile*) ;
///! Save cache for given makefile. Saves to ouput path/CMakeCache.txt
bool SaveCache(const char* path) ;
///! Delete the cache given
bool DeleteCache(const char* path);
///! Print the cache to a stream
void PrintCache(std::ostream&) const;
///! Get the iterator for an entry with a given key.
cmCacheManager::CacheIterator GetCacheIterator(const char *key=0);
///! Remove an entry from the cache
void RemoveCacheEntry(const char* key);
///! Get the number of entries in the cache
int GetSize() {
return static_cast<int>(this->Cache.size()); }
///! Break up a line like VAR:type="value" into var, type and value
static bool ParseEntry(const char* entry,
std::string& var,
std::string& value,
CacheEntryType& type);
static bool ParseEntry(const char* entry,
std::string& var,
std::string& value);
///! Get a value from the cache given a key
const char* GetCacheValue(const char* key) const;
/** Get the version of CMake that wrote the cache. */
unsigned int GetCacheMajorVersion() { return this->CacheMajorVersion; }
unsigned int GetCacheMinorVersion() { return this->CacheMinorVersion; }
bool NeedCacheCompatibility(int major, int minor);
protected:
///! Add an entry into the cache
void AddCacheEntry(const char* key, const char* value,
const char* helpString, CacheEntryType type);
///! Add a BOOL entry into the cache
void AddCacheEntry(const char* key, bool, const char* helpString);
///! Get a cache entry object for a key
CacheEntry *GetCacheEntry(const char *key);
///! Clean out the CMakeFiles directory if no CMakeCache.txt
void CleanCMakeFiles(const char* path);
// Cache version info
unsigned int CacheMajorVersion;
unsigned int CacheMinorVersion;
private:
typedef std::map<cmStdString, CacheEntry> CacheEntryMap;
static void OutputHelpString(std::ofstream& fout,
const std::string& helpString);
CacheEntryMap Cache;
// Only cmake and cmMakefile should be able to add cache values
// the commands should never use the cmCacheManager directly
friend class cmMakefile; // allow access to add cache values
friend class cmake; // allow access to add cache values
friend class cmakewizard; // allow access to add cache values
friend class cmMarkAsAdvancedCommand; // allow access to add cache values
};
#endif
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