gzdoom/src/configfile.h

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/*
** configfile.h
**
**---------------------------------------------------------------------------
** Copyright 1998-2008 Randy Heit
** All rights reserved.
**
** Redistribution and use in source and binary forms, with or without
** modification, are permitted provided that the following conditions
** are met:
**
** 1. Redistributions of source code must retain the above copyright
** notice, this list of conditions and the following disclaimer.
** 2. Redistributions in binary form must reproduce the above copyright
** notice, this list of conditions and the following disclaimer in the
** documentation and/or other materials provided with the distribution.
** 3. The name of the author may not be used to endorse or promote products
** derived from this software without specific prior written permission.
**
** THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
** IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
** OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
** IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
** INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
** NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
** THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
**---------------------------------------------------------------------------
**
*/
#ifndef __CONFIGFILE_H__
#define __CONFIGFILE_H__
#include <stdio.h>
#include "zstring.h"
class FConfigFile
{
public:
FConfigFile ();
FConfigFile (const char *pathname,
void (*nosechandler)(const char *pathname, FConfigFile *config, void *userdata)=0, void *userdata=NULL);
FConfigFile (const FConfigFile &other);
virtual ~FConfigFile ();
void ClearConfig ();
FConfigFile &operator= (const FConfigFile &other);
bool HaveSections () { return Sections != NULL; }
void CreateSectionAtStart (const char *name);
void MoveSectionToStart (const char *name);
void SetSectionNote (const char *section, const char *note);
void SetSectionNote (const char *note);
bool SetSection (const char *section, bool allowCreate=false);
bool SetFirstSection ();
bool SetNextSection ();
const char *GetCurrentSection () const;
void ClearCurrentSection ();
bool DeleteCurrentSection ();
void ClearKey (const char *key);
bool SectionIsEmpty ();
bool NextInSection (const char *&key, const char *&value);
const char *GetValueForKey (const char *key) const;
void SetValueForKey (const char *key, const char *value, bool duplicates=false);
const char *GetPathName () const { return PathName.GetChars(); }
void ChangePathName (const char *path);
void LoadConfigFile (void (*nosechandler)(const char *pathname, FConfigFile *config, void *userdata), void *userdata);
bool WriteConfigFile () const;
protected:
virtual void WriteCommentHeader (FILE *file) const;
virtual char *ReadLine (char *string, int n, void *file) const;
bool ReadConfig (void *file);
bool OkayToWrite;
bool FileExisted;
private:
struct FConfigEntry
{
char *Value;
FConfigEntry *Next;
char Key[1]; // + length of key
void SetValue (const char *val);
};
struct FConfigSection
{
FConfigEntry *RootEntry;
FConfigEntry **LastEntryPtr;
FConfigSection *Next;
FString Note;
char Name[1]; // + length of name
};
FConfigSection *Sections;
FConfigSection **LastSectionPtr;
FConfigSection *CurrentSection;
FConfigEntry *CurrentEntry;
FString PathName;
FConfigSection *FindSection (const char *name) const;
FConfigEntry *FindEntry (FConfigSection *section, const char *key) const;
FConfigSection *NewConfigSection (const char *name);
FConfigEntry *NewConfigEntry (FConfigSection *section, const char *key, const char *value);
void SetSectionNote (FConfigSection *section, const char *note);
public:
class Position
{
friend class FConfigFile;
FConfigSection *Section;
FConfigEntry *Entry;
};
void GetPosition (Position &pos) const;
void SetPosition (const Position &pos);
};
#endif //__CONFIGFILE_H__