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/* Distributed under the OSI-approved BSD 3-Clause License. See accompanying
file Copyright.txt or https://cmake.org/licensing for details. */
#ifndef cmCacheManager_h
#define cmCacheManager_h
#include "cmConfigure.h" // IWYU pragma: keep
#include <iosfwd>
#include <map>
#include <set>
#include <string>
#include <utility>
#include <vector>
#include "cmPropertyMap.h"
#include "cmStateTypes.h"
class cmake;
/** \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;
private:
struct CacheEntry
{
std::string Value;
cmStateEnums::CacheEntryType Type;
cmPropertyMap Properties;
std::vector<std::string> GetPropertyList() const;
const char* GetProperty(const std::string&) const;
void SetProperty(const std::string& property, const char* value);
void AppendProperty(const std::string& property, const char* value,
bool asString = false);
bool Initialized;
CacheEntry()
: Value("")
, Type(cmStateEnums::UNINITIALIZED)
, Initialized(false)
{
}
};
public:
class CacheIterator
{
public:
void Begin();
bool Find(const std::string&);
bool IsAtEnd() const;
void Next();
std::string GetName() const { return this->Position->first; }
std::vector<std::string> GetPropertyList() const;
const char* GetProperty(const std::string&) const;
bool GetPropertyAsBool(const std::string&) const;
bool PropertyExists(const std::string&) const;
void SetProperty(const std::string& property, const char* value);
void AppendProperty(const std::string& property, const char* value,
bool asString = false);
void SetProperty(const std::string& property, bool value);
const char* GetValue() const { return this->GetEntry().Value.c_str(); }
bool GetValueAsBool() const;
void SetValue(const char*);
cmStateEnums::CacheEntryType GetType() const
{
return this->GetEntry().Type;
}
void SetType(cmStateEnums::CacheEntryType ty)
{
this->GetEntry().Type = ty;
}
bool Initialized() { return this->GetEntry().Initialized; }
cmCacheManager& Container;
std::map<std::string, 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); }
///! Load a cache for given makefile. Loads from path/CMakeCache.txt.
bool LoadCache(const std::string& path, bool internal,
std::set<std::string>& excludes,
std::set<std::string>& includes);
///! Save cache for given makefile. Saves to ouput path/CMakeCache.txt
bool SaveCache(const std::string& path);
///! Delete the cache given
bool DeleteCache(const std::string& 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 = nullptr);
///! Remove an entry from the cache
void RemoveCacheEntry(const std::string& key);
///! Get the number of entries in the cache
int GetSize() { return static_cast<int>(this->Cache.size()); }
///! Get a value from the cache given a key
const char* GetInitializedCacheValue(const std::string& key) const;
const char* GetCacheEntryValue(const std::string& key)
{
cmCacheManager::CacheIterator it = this->GetCacheIterator(key.c_str());
if (it.IsAtEnd()) {
return nullptr;
}
return it.GetValue();
}
const char* GetCacheEntryProperty(std::string const& key,
std::string const& propName)
{
return this->GetCacheIterator(key.c_str()).GetProperty(propName);
}
cmStateEnums::CacheEntryType GetCacheEntryType(std::string const& key)
{
return this->GetCacheIterator(key.c_str()).GetType();
}
bool GetCacheEntryPropertyAsBool(std::string const& key,
std::string const& propName)
{
return this->GetCacheIterator(key.c_str()).GetPropertyAsBool(propName);
}
void SetCacheEntryProperty(std::string const& key,
std::string const& propName,
std::string const& value)
{
this->GetCacheIterator(key.c_str()).SetProperty(propName, value.c_str());
}
void SetCacheEntryBoolProperty(std::string const& key,
std::string const& propName, bool value)
{
this->GetCacheIterator(key.c_str()).SetProperty(propName, value);
}
void SetCacheEntryValue(std::string const& key, std::string const& value)
{
this->GetCacheIterator(key.c_str()).SetValue(value.c_str());
}
void RemoveCacheEntryProperty(std::string const& key,
std::string const& propName)
{
this->GetCacheIterator(key.c_str()).SetProperty(propName, (void*)nullptr);
}
void AppendCacheEntryProperty(std::string const& key,
std::string const& propName,
std::string const& value,
bool asString = false)
{
this->GetCacheIterator(key.c_str())
.AppendProperty(propName, value.c_str(), asString);
}
std::vector<std::string> GetCacheEntryKeys()
{
std::vector<std::string> definitions;
definitions.reserve(this->GetSize());
cmCacheManager::CacheIterator cit = this->GetCacheIterator();
for (cit.Begin(); !cit.IsAtEnd(); cit.Next()) {
definitions.push_back(cit.GetName());
}
return definitions;
}
/** Get the version of CMake that wrote the cache. */
unsigned int GetCacheMajorVersion() const { return this->CacheMajorVersion; }
unsigned int GetCacheMinorVersion() const { return this->CacheMinorVersion; }
protected:
///! Add an entry into the cache
void AddCacheEntry(const std::string& key, const char* value,
const char* helpString,
cmStateEnums::CacheEntryType type);
///! Get a cache entry object for a key
CacheEntry* GetCacheEntry(const std::string& key);
///! Clean out the CMakeFiles directory if no CMakeCache.txt
void CleanCMakeFiles(const std::string& path);
// Cache version info
unsigned int CacheMajorVersion;
unsigned int CacheMinorVersion;
private:
cmake* CMakeInstance;
typedef std::map<std::string, CacheEntry> CacheEntryMap;
static void OutputHelpString(std::ostream& fout,
const std::string& helpString);
static void OutputKey(std::ostream& fout, std::string const& key);
static void OutputValue(std::ostream& fout, std::string const& value);
static const char* PersistentProperties[];
bool ReadPropertyEntry(std::string const& key, CacheEntry& e);
void WritePropertyEntries(std::ostream& os, CacheIterator i);
CacheEntryMap Cache;
// Only cmake and cmState should be able to add cache values
// the commands should never use the cmCacheManager directly
friend class cmState; // allow access to add cache values
friend class cmake; // allow access to add cache values
};
#endif
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