haiku/headers/os/app/PropertyInfo.h

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/*******************************************************************************
/
/ File: PropertyInfo.h
/
/ Description: Utility class for maintain scripting information
/
/ Copyright 1997-98, Be Incorporated, All Rights Reserved
/ Modified for use with OpenBeOS.
/
*******************************************************************************/
#ifndef _PROPERTY_INFO_H
#define _PROPERTY_INFO_H
#include <BeBuild.h>
#include <SupportDefs.h>
#include <Flattenable.h>
#include <TypeConstants.h> /* For convenience */
/*
* The following define is used to turn off a number of member functions
* and member variables in BPropertyInfo which are only there to faciliate
* BeOS R3 compatibility. Be changed the property_info structure between
* R3 and R4 and these functions ensure that BPropertyInfo is backward
* compatible. However, between R3 and R4, Be changed the Intel executable
* format so R4 was not backward compatible with R3.
*
* Because OpenBeOS is only targetting Intel platform compatibility at this
* time, there is no need for R3 compatibility in OpenBeOS. By default
* these members will be turned off with the R3_COMPATIBLE define.
*/
#undef R3_COMPATIBLE
#ifdef R3_COMPATIBLE
struct _oproperty_info_;
#endif
/*----------------------------------------------------------------*/
/*----- the property_info structure ------------------------------*/
struct compound_type {
struct field_pair {
char *name; // name of entry in message
type_code type; // type_code of entry in message
};
field_pair pairs[5];
};
struct property_info {
char *name;
uint32 commands[10];
uint32 specifiers[10];
char *usage;
uint32 extra_data;
uint32 types[10];
compound_type ctypes[3];
uint32 _reserved[10];
};
enum value_kind {
B_COMMAND_KIND = 0,
B_TYPE_CODE_KIND = 1
};
struct value_info {
char *name;
uint32 value;
value_kind kind;
char *usage;
uint32 extra_data;
uint32 _reserved[10];
};
/*----------------------------------------------------------------*/
/*----- BPropertyInfo class --------------------------------------*/
class BPropertyInfo : public BFlattenable {
public:
BPropertyInfo(property_info *p = NULL,
value_info *ci = NULL,
bool free_on_delete = false);
virtual ~BPropertyInfo();
virtual int32 FindMatch(BMessage *msg,
int32 index,
BMessage *spec,
int32 form,
const char *prop,
void *data = NULL) const;
virtual bool IsFixedSize() const;
virtual type_code TypeCode() const;
virtual ssize_t FlattenedSize() const;
virtual status_t Flatten(void *buffer, ssize_t size) const;
virtual bool AllowsTypeCode(type_code code) const;
virtual status_t Unflatten(type_code c,
const void *buf,
ssize_t s);
const property_info *Properties() const;
const value_info *Values() const;
int32 CountProperties() const;
int32 CountValues() const;
void PrintToStream() const;
/*----- Private or reserved -----------------------------------------*/
protected:
static bool FindCommand(uint32, int32, property_info *);
static bool FindSpecifier(uint32, property_info *);
private:
virtual void _ReservedPropertyInfo1();
virtual void _ReservedPropertyInfo2();
virtual void _ReservedPropertyInfo3();
virtual void _ReservedPropertyInfo4();
BPropertyInfo(const BPropertyInfo &);
BPropertyInfo &operator=(const BPropertyInfo &);
void FreeMem();
property_info *fPropInfo;
value_info *fValueInfo;
int32 fPropCount;
bool fInHeap;
uint16 fValueCount;
#ifndef R3_COMPATIBLE
uint32 _reserved[4];
#else
_oproperty_info_ *fOldPropInfo;
bool fOldInHeap;
uint32 _reserved[2]; /* was 4 */
/* Deprecated */
private:
static property_info *ConvertToNew(const _oproperty_info_ *p);
static _oproperty_info_ *ConvertFromNew(const property_info *p);
const property_info *PropertyInfo() const;
BPropertyInfo(property_info *p,
bool free_on_delete);
static bool MatchCommand(uint32, int32, property_info *);
static bool MatchSpecifier(uint32, property_info *);
#endif
};
/*-------------------------------------------------------------*/
/*-------------------------------------------------------------*/
#endif /* _PROPERTY_INFO_H */