Source/cmCacheManager.h

   1 /*=========================================================================
   2
   3   Program:   CMake - Cross-Platform Makefile Generator
   4   Module:    $RCSfile: cmCacheManager.h,v $
   5   Language:  C++
   6   Date:      $Date: 2009-09-11 14:04:09 $
   7   Version:   $Revision: 1.55 $
   8
   9   Copyright (c) 2002 Kitware, Inc., Insight Consortium.  All rights reserved.
  10   See Copyright.txt or http://www.cmake.org/HTML/Copyright.html for details.
  11
  12      This software is distributed WITHOUT ANY WARRANTY; without even
  13      the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
  14      PURPOSE.  See the above copyright notices for more information.
  15
  16 =========================================================================*/
  17 #ifndef cmCacheManager_h
  18 #define cmCacheManager_h
  19
  20 #include "cmStandardIncludes.h"
  21 #include "cmPropertyMap.h"
  22 class cmMakefile;
  23 class cmMarkAsAdvancedCommand;
  24 class cmake;
  25
  26 /** \class cmCacheManager
  27  * \brief Control class for cmake's cache
  28  *
  29  * Load and Save CMake cache files.
  30  *
  31  */
  32 class cmCacheManager
  33 {
  34 public:
  35   cmCacheManager(cmake* cm);
  36   class CacheIterator;
  37   friend class cmCacheManager::CacheIterator;
  38   enum CacheEntryType{ BOOL=0, PATH, FILEPATH, STRING, INTERNAL,STATIC,
  39                        UNINITIALIZED };
  40
  41 private:
  42   struct CacheEntry
  43   {
  44     std::string Value;
  45     CacheEntryType Type;
  46     cmPropertyMap Properties;
  47     const char* GetProperty(const char*) const;
  48     void SetProperty(const char* property, const char* value);
  49     void AppendProperty(const char* property, const char* value);
  50     bool Initialized;
  51     CacheEntry() : Value(""), Type(UNINITIALIZED), Initialized(false)
  52       {}
  53   };
  54
  55 public:
  56   class CacheIterator
  57   {
  58   public:
  59     void Begin();
  60     bool Find(const char*);
  61     bool IsAtEnd() const;
  62     void Next();
  63     const char *GetName() const {
  64       return this->Position->first.c_str(); }
  65     const char* GetProperty(const char*) const ;
  66     bool GetPropertyAsBool(const char*) const ;
  67     bool PropertyExists(const char*) const;
  68     void SetProperty(const char* property, const char* value);
  69     void AppendProperty(const char* property, const char* value);
  70     void SetProperty(const char* property, bool value);
  71     const char* GetValue() const { return this->GetEntry().Value.c_str(); }
  72     bool GetValueAsBool() const;
  73     void SetValue(const char*);
  74     CacheEntryType GetType() const { return this->GetEntry().Type; }
  75     void SetType(CacheEntryType ty) { this->GetEntry().Type = ty; }
  76     bool Initialized() { return this->GetEntry().Initialized; }
  77     cmCacheManager &Container;
  78     std::map<cmStdString, CacheEntry>::iterator Position;
  79     CacheIterator(cmCacheManager &cm) : Container(cm) {
  80       this->Begin();
  81     }
  82     CacheIterator(cmCacheManager &cm, const char* key) : Container(cm)
  83       {
  84       if ( key )
  85         {
  86         this->Find(key);
  87         }
  88     }
  89   private:
  90     CacheEntry const& GetEntry() const { return this->Position->second; }
  91     CacheEntry& GetEntry() { return this->Position->second; }
  92   };
  93
  94   ///! return an iterator to iterate through the cache map
  95   cmCacheManager::CacheIterator NewIterator()
  96     {
  97       return CacheIterator(*this);
  98     }
  99
 100   /**
 101    * Types for the cache entries.  These are useful as
 102    * hints for a cache editor program.  Path should bring
 103    * up a file chooser, BOOL a check box, and STRING a
 104    * text entry box, FILEPATH is a full path to a file which
 105    * can be different than just a path input
 106    */
 107   static CacheEntryType StringToType(const char*);
 108   static const char* TypeToString(CacheEntryType);
 109   static bool IsType(const char*);
 110
 111   ///! Load a cache for given makefile.  Loads from ouput home.
 112   bool LoadCache(cmMakefile*);
 113   ///! Load a cache for given makefile.  Loads from path/CMakeCache.txt.
 114   bool LoadCache(const char* path);
 115   bool LoadCache(const char* path, bool internal);
 116   bool LoadCache(const char* path, bool internal,
 117                  std::set<cmStdString>& excludes,
 118                  std::set<cmStdString>& includes);
 119
 120   ///! Save cache for given makefile.  Saves to ouput home CMakeCache.txt.
 121   bool SaveCache(cmMakefile*) ;
 122   ///! Save cache for given makefile.  Saves to ouput path/CMakeCache.txt
 123   bool SaveCache(const char* path) ;
 124
 125   ///! Delete the cache given
 126   bool DeleteCache(const char* path);
 127
 128   ///! Print the cache to a stream
 129   void PrintCache(std::ostream&) const;
 130
 131   ///! Get the iterator for an entry with a given key.
 132   cmCacheManager::CacheIterator GetCacheIterator(const char *key=0);
 133
 134   ///! Remove an entry from the cache
 135   void RemoveCacheEntry(const char* key);
 136
 137   ///! Get the number of entries in the cache
 138   int GetSize() {
 139     return static_cast<int>(this->Cache.size()); }
 140
 141   ///! Break up a line like VAR:type="value" into var, type and value
 142   static bool ParseEntry(const char* entry,
 143                          std::string& var,
 144                          std::string& value,
 145                          CacheEntryType& type);
 146
 147   static bool ParseEntry(const char* entry,
 148                          std::string& var,
 149                          std::string& value);
 150
 151   ///! Get a value from the cache given a key
 152   const char* GetCacheValue(const char* key) const;
 153
 154   /** Get the version of CMake that wrote the cache.  */
 155   unsigned int GetCacheMajorVersion() { return this->CacheMajorVersion; }
 156   unsigned int GetCacheMinorVersion() { return this->CacheMinorVersion; }
 157   bool NeedCacheCompatibility(int major, int minor);
 158
 159   /** Define and document CACHE entry properties.  */
 160   static void DefineProperties(cmake *cm);
 161
 162 protected:
 163   ///! Add an entry into the cache
 164   void AddCacheEntry(const char* key, const char* value,
 165                      const char* helpString, CacheEntryType type);
 166
 167   ///! Get a cache entry object for a key
 168   CacheEntry *GetCacheEntry(const char *key);
 169   ///! Clean out the CMakeFiles directory if no CMakeCache.txt
 170   void CleanCMakeFiles(const char* path);
 171
 172   // Cache version info
 173   unsigned int CacheMajorVersion;
 174   unsigned int CacheMinorVersion;
 175 private:
 176   cmake* CMakeInstance;
 177   typedef  std::map<cmStdString, CacheEntry> CacheEntryMap;
 178   static void OutputHelpString(std::ostream& fout,
 179                                const std::string& helpString);
 180   static void OutputKey(std::ostream& fout, std::string const& key);
 181   static void OutputValue(std::ostream& fout, std::string const& value);
 182
 183   static const char* PersistentProperties[];
 184   bool ReadPropertyEntry(std::string const& key, CacheEntry& e);
 185   void WritePropertyEntries(std::ostream& os, CacheIterator const& i);
 186
 187   CacheEntryMap Cache;
 188   // Only cmake and cmMakefile should be able to add cache values
 189   // the commands should never use the cmCacheManager directly
 190   friend class cmMakefile; // allow access to add cache values
 191   friend class cmake; // allow access to add cache values
 192   friend class cmakewizard; // allow access to add cache values
 193   friend class cmMarkAsAdvancedCommand; // allow access to add cache values
 194 };
 195
 196 #endif