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# csutil/win32/registrycfg.h

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    00001 /*
    00002     Copyright (C) 2003 by Jorrit Tyberghein
    00003               (C) 2003 by Frank Richter
    00004
    00005     This library is free software; you can redistribute it and/or
    00006     modify it under the terms of the GNU Library General Public
    00007     License as published by the Free Software Foundation; either
    00008     version 2 of the License, or (at your option) any later version.
    00009
    00010     This library is distributed in the hope that it will be useful,
    00011     but WITHOUT ANY WARRANTY; without even the implied warranty of
    00012     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
    00013     Library General Public License for more details.
    00014
    00015     You should have received a copy of the GNU Library General Public
    00016     License along with this library; if not, write to the Free
    00017     Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
    00018 */
    00019
    00020 #ifndef __CS_CSSYS_WIN32_REGISTRYCFG_H__
    00021 #define __CS_CSSYS_WIN32_REGISTRYCFG_H__
    00022
    00027 #include "csextern.h"
    00028 #include "iutil/cfgfile.h"
    00029 #include "csutil/scf_implementation.h"
    00030 #include "csutil/strhash.h"
    00031 #include "csutil/array.h"
    00032
    00033 #include <windows.h>
    00034 #include "sanity.inc"
    00035
    00036 class csWin32RegistryIterator;
    00037
    00046 class CS_CRYSTALSPACE_EXPORT csWin32RegistryConfig :
    00047   public scfImplementation1<csWin32RegistryConfig, iConfigFile>
    00048 {
    00049 private:
    00050   friend class csWin32RegistryIterator;
    00051
    00052   HKEY hKey;
    00053   HKEY hKeyParent;
    00054   char* Prefix;
    00055   // whether this key is opened w/ write access.
    00056   bool writeAccess;
    00057   char* Key;
    00058
    00059   typedef struct
    00060   {
    00061     csStringHash strings;
    00062   } rcStatus;
    00063   mutable rcStatus status;
    00064
    00065   csArray<csWin32RegistryIterator*> iters;
    00066
    00067   // convert CS "x.y.z" keys to registry "x\y\z"
    00068   void ReplaceSeparators (char* key) const;
    00069
    00070   bool TryOpen (HKEY parent, HKEY& regKey, DWORD access, const char* keyName,
    00071     bool create);
    00072
    00073   // convenience class, used to delete[] a buffer on function return
    00074   struct Block_O_Mem
    00075   {
    00076     BYTE* data;
    00077     size_t size;
    00078     Block_O_Mem () : data(0), size(0) { }
    00079     void Clear() { delete[] data; }
    00080     void SetSize (size_t sz) { Clear(); size = sz; data = new BYTE[sz]; }
    00081     ~Block_O_Mem() { Clear(); }
    00082   };
    00083   // To shorten calls to RegSetValueEx()
    00084   bool InternalSetValue (const char* Key,
    00085     DWORD type, const void* data, size_t datasize);
    00086   // To shorten calls to RegQueryValueEx()
    00087   bool InternalGetValue (const char* Key,
    00088     DWORD& type, Block_O_Mem& data) const;
    00089
    00090   /*
    00091     Helper functions to convert the data from the registry to the
    00092     requested format
    00093   */
    00094   int RegToInt (DWORD type, Block_O_Mem& data, int Def) const;
    00095   float RegToFloat (DWORD type, Block_O_Mem& data, float Def) const;
    00096   const char* RegToStr (DWORD type, Block_O_Mem& data, const char* Def) const;
    00097   bool RegToBool (DWORD type, Block_O_Mem& data, bool Def) const;
    00098
    00099   // Check whether we have registry write access.
    00100   bool WriteAccess();
    00101 public:
    00102
    00103   csWin32RegistryConfig ();
    00104   virtual ~csWin32RegistryConfig();
    00105
    00113   bool Open (const char* Key, HKEY parent = HKEY_CURRENT_USER);
    00120   void Close ();
    00121
    00122   virtual const char* GetFileName () const;
    00123   virtual iVFS* GetVFS () const;
    00124   virtual void SetFileName (const char*, iVFS*);
    00125   virtual bool Load (const char* iFileName, iVFS* = 0, bool Merge = false,
    00126     bool NewWins = true);
    00127   virtual bool Save ();
    00128   virtual bool Save (const char *iFileName, iVFS* = 0);
    00129
    00130   virtual void Clear ();
    00131
    00132   virtual csPtr<iConfigIterator> Enumerate (const char *Subsection = 0);
    00133   virtual bool KeyExists (const char *Key) const;
    00134   virtual bool SubsectionExists (const char *Subsection) const;
    00135
    00136   virtual int GetInt (const char *Key, int Def = 0) const;
    00137   virtual float GetFloat (const char *Key, float Def = 0.0) const;
    00138   virtual const char *GetStr (const char *Key, const char *Def = "") const;
    00139   virtual bool GetBool (const char *Key, bool Def = false) const;
    00140   virtual const char *GetComment (const char *Key) const;
    00141
    00142   virtual void SetStr (const char *Key, const char *Val);
    00143   virtual void SetInt (const char *Key, int Value);
    00144   virtual void SetFloat (const char *Key, float Value);
    00145   virtual void SetBool (const char *Key, bool Value);
    00146   virtual bool SetComment (const char *Key, const char *Text);
    00147   virtual void DeleteKey (const char *Key);
    00148   virtual const char *GetEOFComment () const;
    00149   virtual void SetEOFComment (const char *Text);
    00150 };
    00151
    00152 #endif
    00153