Improve error messages from wxImage::LoadFile().

[wxWidgets.git] / include / wx / fileconf.h

diff --git a/include/wx/fileconf.h b/include/wx/fileconf.h
index 4b4d1a470d734c5225e8eea7dd6fedb21c5341cc..c3dfb5d772c4650c0e8dbeef4caff7d580e2480f 100644 (file)
--- a/include/wx/fileconf.h
+++ b/include/wx/fileconf.h
@@ -1,33 +1,26 @@
-/*****************************************************************************\
- * Project:   CppLib: C++ library for Windows/UNIX platfroms                 *
- * File:      fileconf.h - file based implementation of Config               *
- *---------------------------------------------------------------------------*
- * Language:  C++                                                            *
- * Platfrom:  Any                                                            *
- *---------------------------------------------------------------------------*
- * Classes:                                                                  *
- *---------------------------------------------------------------------------*
- * Author:    Vadim Zeitlin zeitlin@dptmaths.ens-cachan.fr>                  *
- *            adapted from earlier class by VZ & Karsten Ballüder            *
- * History:                                                                  *
- *  27.04.98  created                                                        *
-\*****************************************************************************/
+///////////////////////////////////////////////////////////////////////////////
+// Name:        wx/fileconf.h
+// Purpose:     wxFileConfig derivation of wxConfigBase
+// Author:      Vadim Zeitlin
+// Modified by:
+// Created:     07.04.98 (adapted from appconf.cpp)
+// RCS-ID:      $Id$
+// Copyright:   (c) 1997 Karsten Ballueder   &  Vadim Zeitlin
+//                       Ballueder@usa.net     <zeitlin@dptmaths.ens-cachan.fr>
+// Licence:     wxWindows licence
+///////////////////////////////////////////////////////////////////////////////

 
 #ifndef   _FILECONF_H
 #define   _FILECONF_H
 
 
 #ifndef   _FILECONF_H
 #define   _FILECONF_H
 

-#ifdef __GNUG__
-#pragma interface "fileconf.h"
-#endif
+#include "wx/defs.h"

 
 

-// ----------------------------------------------------------------------------
-// compile options
-// ----------------------------------------------------------------------------
+#if wxUSE_CONFIG

 
 

-// it won't compile without it anyhow
-#ifndef USE_WXCONFIG
-  #error "Please define USE_WXCONFIG or remove fileconf.cpp from your makefile"
-#endif // USE_WXCONFIG
+#include "wx/textfile.h"
+#include "wx/string.h"
+#include "wx/confbase.h"
+#include "wx/filename.h"

 
 // ----------------------------------------------------------------------------
 // wxFileConfig
 
 // ----------------------------------------------------------------------------
 // wxFileConfig


@@ -83,10 +76,30 @@
   and local value is ignored. Of course, the changes are always written to local
   file only.
 
   and local value is ignored. Of course, the changes are always written to local
   file only.
 

-  @@@@ describe environment variable expansion
+  The names of these files can be specified in a number of ways. First of all,
+  you can use the standard convention: using the ctor which takes 'strAppName'
+  parameter will probably be sufficient for 90% of cases. If, for whatever
+  reason you wish to use the files with some other names, you can always use the
+  second ctor.
+
+  wxFileConfig also may automatically expand the values of environment variables
+  in the entries it reads: for example, if you have an entry
+    score_file = $HOME/.score
+  a call to Read(&str, "score_file") will return a complete path to .score file
+  unless the expansion was previously disabled with SetExpandEnvVars(false) call
+  (it's on by default, the current status can be retrieved with
+   IsExpandingEnvVars function).

 */
 */

+class WXDLLIMPEXP_FWD_BASE wxFileConfigGroup;
+class WXDLLIMPEXP_FWD_BASE wxFileConfigEntry;
+class WXDLLIMPEXP_FWD_BASE wxFileConfigLineList;
+
+#if wxUSE_STREAMS
+class WXDLLIMPEXP_FWD_BASE wxInputStream;
+class WXDLLIMPEXP_FWD_BASE wxOutputStream;
+#endif // wxUSE_STREAMS

 
 

-class wxFileConfig : public wxConfig
+class WXDLLIMPEXP_BASE wxFileConfig : public wxConfigBase

 {
 public:
   // construct the "standard" full name for global (system-wide) and
 {
 public:
   // construct the "standard" full name for global (system-wide) and


@@ -97,202 +110,155 @@ public:
   // Unix   /etc/file.ext           ~/.file
   // Win    %windir%\file.ext   %USERPROFILE%\file.ext
   //
   // Unix   /etc/file.ext           ~/.file
   // Win    %windir%\file.ext   %USERPROFILE%\file.ext
   //

-  // where file is the basename of szFile, ext is it's extension
+  // where file is the basename of szFile, ext is its extension

   // or .conf (Unix) or .ini (Win) if it has none
   // or .conf (Unix) or .ini (Win) if it has none

-  static wxString GetGlobalFileName(const char *szFile);
-  static wxString GetLocalFileName(const char *szFile);
+  static wxFileName GetGlobalFile(const wxString& szFile);
+  static wxFileName GetLocalFile(const wxString& szFile, int style = 0);
+
+  static wxString GetGlobalFileName(const wxString& szFile)
+  {
+      return GetGlobalFile(szFile).GetFullPath();
+  }
+
+  static wxString GetLocalFileName(const wxString& szFile, int style = 0)
+  {
+      return GetLocalFile(szFile, style).GetFullPath();
+  }

 
   // ctor & dtor
 
   // ctor & dtor

-    // if strGlobal is empty, only local config file is used
-  wxFileConfig(const wxString& strLocal,
-               const wxString& strGlobal = "");
+    // New constructor: one size fits all. Specify wxCONFIG_USE_LOCAL_FILE or
+    // wxCONFIG_USE_GLOBAL_FILE to say which files should be used.
+  wxFileConfig(const wxString& appName = wxEmptyString,
+               const wxString& vendorName = wxEmptyString,
+               const wxString& localFilename = wxEmptyString,
+               const wxString& globalFilename = wxEmptyString,
+               long style = wxCONFIG_USE_LOCAL_FILE | wxCONFIG_USE_GLOBAL_FILE,
+               const wxMBConv& conv = wxConvAuto());
+
+#if wxUSE_STREAMS
+    // ctor that takes an input stream.
+  wxFileConfig(wxInputStream &inStream, const wxMBConv& conv = wxConvAuto());
+#endif // wxUSE_STREAMS
+

     // dtor will save unsaved data
   virtual ~wxFileConfig();
 
     // dtor will save unsaved data
   virtual ~wxFileConfig();
 

+  // under Unix, set the umask to be used for the file creation, do nothing
+  // under other systems
+#ifdef __UNIX__
+  void SetUmask(int mode) { m_umask = mode; }
+#else // !__UNIX__
+  void SetUmask(int WXUNUSED(mode)) { }
+#endif // __UNIX__/!__UNIX__
+

   // implement inherited pure virtual functions
   virtual void SetPath(const wxString& strPath);
   // implement inherited pure virtual functions
   virtual void SetPath(const wxString& strPath);

-  virtual const wxString& GetPath() const { return m_strPath; }
+  virtual const wxString& GetPath() const;

 
 

-  virtual bool GetFirstGroup(wxString& str, long& lIndex);
-  virtual bool GetNextGroup (wxString& str, long& lIndex);
-  virtual bool GetFirstEntry(wxString& str, long& lIndex);
-  virtual bool GetNextEntry (wxString& str, long& lIndex);
+  virtual bool GetFirstGroup(wxString& str, long& lIndex) const;
+  virtual bool GetNextGroup (wxString& str, long& lIndex) const;
+  virtual bool GetFirstEntry(wxString& str, long& lIndex) const;
+  virtual bool GetNextEntry (wxString& str, long& lIndex) const;

 
 

-  virtual uint GetNumberOfEntries(bool bRecursive = FALSE) const;
-  virtual uint GetNumberOfGroups(bool bRecursive = FALSE) const;
+  virtual size_t GetNumberOfEntries(bool bRecursive = false) const;
+  virtual size_t GetNumberOfGroups(bool bRecursive = false) const;

 
   virtual bool HasGroup(const wxString& strName) const;
   virtual bool HasEntry(const wxString& strName) const;
 
 
   virtual bool HasGroup(const wxString& strName) const;
   virtual bool HasEntry(const wxString& strName) const;
 

-  virtual bool Read(wxString *pstr, const char *szKey,
-                    const char *szDefault = 0) const;
-  virtual const char *Read(const char *szKey,
-                           const char *szDefault = 0) const;
-  virtual bool Read(long *pl, const char *szKey, long lDefault) const;
-  virtual long Read(const char *szKey, long lDefault) const
-    { return wxConfig::Read(szKey, lDefault); }
-  virtual bool Write(const char *szKey, const char *szValue);
-  virtual bool Write(const char *szKey, long lValue);
-  virtual bool Flush(bool bCurrentOnly = FALSE);
-
-  virtual bool DeleteEntry(const char *szKey, bool bGroupIfEmptyAlso);
-  virtual bool DeleteGroup(const char *szKey);
-  virtual bool DeleteAll();
+  virtual bool Flush(bool bCurrentOnly = false);

 
 

-public:
-  // fwd decl
-  class ConfigGroup;
-  class ConfigEntry;
+  virtual bool RenameEntry(const wxString& oldName, const wxString& newName);
+  virtual bool RenameGroup(const wxString& oldName, const wxString& newName);

 
 

-  // we store all lines of the local config file as a linked list in memory
-  class LineList
-  {
-  public:
-    // ctor
-    LineList(const wxString& str, LineList *pNext = NULL) : m_strLine(str)
-      { SetNext(pNext); SetPrev(NULL); }
-
-    //
-    LineList *Next() const              { return m_pNext;  }
-    LineList *Prev() const              { return m_pPrev;  }
-    void      SetNext(LineList *pNext)  { m_pNext = pNext; }
-    void      SetPrev(LineList *pPrev)  { m_pPrev = pPrev; }
-
-    //
-    void SetText(const wxString& str) { m_strLine = str;  }
-    const wxString& Text() const      { return m_strLine; }
-
-  private:
-    wxString  m_strLine;      // line contents
-    LineList *m_pNext,        // next node
-             *m_pPrev;        // previous one
-  };
+  virtual bool DeleteEntry(const wxString& key, bool bGroupIfEmptyAlso = true);
+  virtual bool DeleteGroup(const wxString& szKey);
+  virtual bool DeleteAll();

 
 

+  // additional, wxFileConfig-specific, functionality
+#if wxUSE_STREAMS
+  // save the entire config file text to the given stream, note that the text
+  // won't be saved again in dtor when Flush() is called if you use this method
+  // as it won't be "changed" any more
+  virtual bool Save(wxOutputStream& os, const wxMBConv& conv = wxConvAuto());
+#endif // wxUSE_STREAMS
+
+public:

   // functions to work with this list
   // functions to work with this list

-  LineList *LineListAppend(const wxString& str);
-  LineList *LineListInsert(const wxString& str,
-                           LineList *pLine);    // NULL => Prepend()
-  void      LineListRemove(LineList *pLine);
+  wxFileConfigLineList *LineListAppend(const wxString& str);
+  wxFileConfigLineList *LineListInsert(const wxString& str,
+                           wxFileConfigLineList *pLine);    // NULL => Prepend()
+  void      LineListRemove(wxFileConfigLineList *pLine);

   bool      LineListIsEmpty();
 
   bool      LineListIsEmpty();
 

+protected:
+  virtual bool DoReadString(const wxString& key, wxString *pStr) const;
+  virtual bool DoReadLong(const wxString& key, long *pl) const;
+#if wxUSE_BASE64
+  virtual bool DoReadBinary(const wxString& key, wxMemoryBuffer* buf) const;
+#endif // wxUSE_BASE64
+
+  virtual bool DoWriteString(const wxString& key, const wxString& szValue);
+  virtual bool DoWriteLong(const wxString& key, long lValue);
+#if wxUSE_BASE64
+  virtual bool DoWriteBinary(const wxString& key, const wxMemoryBuffer& buf);
+#endif // wxUSE_BASE64
+

 private:
 private:

-  // put the object in the initial state
+  // GetXXXFileName helpers: return ('/' terminated) directory names
+  static wxString GetGlobalDir();
+  static wxString GetLocalDir(int style = 0);
+
+  // common part of all ctors (assumes that m_str{Local|Global}File are already
+  // initialized

   void Init();
 
   void Init();
 

+  // common part of from dtor and DeleteAll
+  void CleanUp();
+

   // parse the whole file
   // parse the whole file

-  void Parse(wxTextFile& file, bool bLocal);
+  void Parse(const wxTextBuffer& buffer, bool bLocal);

 
   // the same as SetPath("/")
   void SetRootPath();
 
 
   // the same as SetPath("/")
   void SetRootPath();
 

+  // real SetPath() implementation, returns true if path could be set or false
+  // if path doesn't exist and createMissingComponents == false
+  bool DoSetPath(const wxString& strPath, bool createMissingComponents);
+
+  // set/test the dirty flag
+  void SetDirty() { m_isDirty = true; }
+  void ResetDirty() { m_isDirty = false; }
+  bool IsDirty() const { return m_isDirty; }
+
+

   // member variables
   // ----------------
   // member variables
   // ----------------

-  LineList   *m_linesHead,        // head of the linked list
-             *m_linesTail;        // tail
+  wxFileConfigLineList *m_linesHead,    // head of the linked list
+                       *m_linesTail;    // tail

 
 

-  wxString    m_strLocalFile,     // local  file name passed to ctor
-              m_strGlobalFile;    // global
-  wxString    m_strPath;          // current path (not '/' terminated)
+  wxFileName  m_fnLocalFile,            // local  file name passed to ctor
+              m_fnGlobalFile;           // global
+  wxString    m_strPath;                // current path (not '/' terminated)

 
 

-  ConfigGroup *m_pRootGroup,      // the top (unnamed) group
-              *m_pCurrentGroup;   // the current group
+  wxFileConfigGroup *m_pRootGroup,      // the top (unnamed) group
+                    *m_pCurrentGroup;   // the current group

 
 

-//protected: --- if wxFileConfig::ConfigEntry is not public, functions in
-//               ConfigGroup such as Find/AddEntry can't return "ConfigEntry *"
-public:
-  WX_DEFINE_SORTED_ARRAY(ConfigEntry *, ArrayEntries);
-  WX_DEFINE_SORTED_ARRAY(ConfigGroup *, ArrayGroups);
+  wxMBConv    *m_conv;

 
 

-  class ConfigEntry
-  {
-  private:
-    ConfigGroup  *m_pParent;      // group that contains us
-    wxString      m_strName,      // entry name
-                  m_strValue;     //       value
-    bool          m_bDirty,       // changed since last read?
-                  m_bImmutable;   // can be overriden locally?
-    int           m_nLine;        // used if m_pLine == NULL only
-    LineList     *m_pLine;        // pointer to our line in the linked list
-                                  // or NULL if it was found in global file
-
-  public:
-    ConfigEntry(ConfigGroup *pParent, const wxString& strName, int nLine);
-
-    // simple accessors
-    const wxString& Name()        const { return m_strName;    }
-    const wxString& Value()       const { return m_strValue;   }
-    ConfigGroup    *Group()       const { return m_pParent;    }
-    bool            IsDirty()     const { return m_bDirty;     }
-    bool            IsImmutable() const { return m_bImmutable; }
-    bool            IsLocal()     const { return m_pLine != 0; }
-    int             Line()        const { return m_nLine;      }
-    LineList       *GetLine()     const { return m_pLine;      }
-
-    // modify entry attributes
-    void SetValue(const wxString& strValue, bool bUser = TRUE);
-    void SetDirty();
-    void SetLine(LineList *pLine);
-  };
-
-  class ConfigGroup
-  {
-  private:
-    wxFileConfig *m_pConfig;      // config object we belong to
-    ConfigGroup  *m_pParent;      // parent group (NULL for root group)
-    ArrayEntries  m_aEntries;     // entries in this group
-    ArrayGroups   m_aSubgroups;   // subgroups
-    wxString      m_strName;      // group's name
-    bool          m_bDirty;       // if FALSE => all subgroups are not dirty
-    LineList     *m_pLine;        // pointer to our line in the linked list
-    ConfigEntry  *m_pLastEntry;   // last entry of this group in the local file
-    ConfigGroup  *m_pLastGroup;   // last subgroup
-
-  public:
-    // ctor
-    ConfigGroup(ConfigGroup *pParent, const wxString& strName, wxFileConfig *);
-
-    // dtor deletes all entries and subgroups also
-    ~ConfigGroup();
-
-    // simple accessors
-    const wxString& Name()    const { return m_strName; }
-    ConfigGroup    *Parent()  const { return m_pParent; }
-    wxFileConfig   *Config()  const { return m_pConfig; }
-    bool            IsDirty() const { return m_bDirty;  }
-
-    bool  IsEmpty() const { return Entries().IsEmpty() && Groups().IsEmpty(); }
-    const ArrayEntries& Entries() const { return m_aEntries;   }
-    const ArrayGroups&  Groups()  const { return m_aSubgroups; }
-
-    // find entry/subgroup (NULL if not found)
-    ConfigGroup *FindSubgroup(const char *szName) const;
-    ConfigEntry *FindEntry   (const char *szName) const;
-
-    // delete entry/subgroup, return FALSE if doesn't exist
-    bool DeleteSubgroup(const char *szName);
-    bool DeleteEntry(const char *szName);
-
-    // create new entry/subgroup returning pointer to newly created element
-    ConfigGroup *AddSubgroup(const wxString& strName);
-    ConfigEntry *AddEntry   (const wxString& strName, int nLine = NOT_FOUND);
-
-    // will also recursively set parent's dirty flag
-    void SetDirty();
-    void SetLine(LineList *pLine);
-
-    // the new entries in this subgroup will be inserted after the last subgroup
-    // or, if there is none, after the last entry
-    void SetLastEntry(ConfigEntry *pLastEntry) { m_pLastEntry = pLastEntry; }
-    void SetLastGroup(ConfigGroup *pLastGroup) { m_pLastGroup = pLastGroup; }
-
-    wxString GetFullName() const;
-
-    // get the last line belonging to an entry/subgroup of this group
-    LineList *GetGroupLine();
-    LineList *GetLastEntryLine();
-    LineList *GetLastGroupLine();
-  };
+#ifdef __UNIX__
+  int m_umask;                          // the umask to use for file creation
+#endif // __UNIX__
+
+  bool m_isDirty;                       // if true, we have unsaved changes
+
+  wxDECLARE_NO_COPY_CLASS(wxFileConfig);
+  DECLARE_ABSTRACT_CLASS(wxFileConfig)

 };
 
 };
 

-#endif  //_FILECONF_H
+#endif
+  // wxUSE_CONFIG
+
+#endif
+  //_FILECONF_H