e39c71fce8
aware flatten and unflatten code. git-svn-id: file:///srv/svn/repos/haiku/trunk/current@844 a95241bf-73f2-0310-859d-f6bbb57e9c96
153 lines
4.3 KiB
C++
153 lines
4.3 KiB
C++
/*******************************************************************************
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/
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/ File: PropertyInfo.h
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/
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/ Description: Utility class for maintain scripting information
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/
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/ Copyright 1997-98, Be Incorporated, All Rights Reserved
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/ Modified for use with OpenBeOS.
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/
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*******************************************************************************/
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#ifndef _PROPERTY_INFO_H
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#define _PROPERTY_INFO_H
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#include <BeBuild.h>
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#include <SupportDefs.h>
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#include <Flattenable.h>
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#include <TypeConstants.h> /* For convenience */
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/*
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* The following define is used to turn off a number of member functions
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* and member variables in BPropertyInfo which are only there to faciliate
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* BeOS R3 compatibility. Be changed the property_info structure between
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* R3 and R4 and these functions ensure that BPropertyInfo is backward
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* compatible. However, between R3 and R4, Be changed the Intel executable
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* format so R4 was not backward compatible with R3.
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*
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* Because OpenBeOS is only targetting Intel platform compatibility at this
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* time, there is no need for R3 compatibility in OpenBeOS. By default
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* these members will be turned off with the R3_COMPATIBLE define.
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*/
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#undef R3_COMPATIBLE
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#ifdef R3_COMPATIBLE
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struct _oproperty_info_;
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#endif
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/*----------------------------------------------------------------*/
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/*----- the property_info structure ------------------------------*/
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struct compound_type {
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struct field_pair {
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char *name; // name of entry in message
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type_code type; // type_code of entry in message
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};
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field_pair pairs[5];
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};
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struct property_info {
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char *name;
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uint32 commands[10];
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uint32 specifiers[10];
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char *usage;
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uint32 extra_data;
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uint32 types[10];
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compound_type ctypes[3];
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uint32 _reserved[10];
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};
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enum value_kind {
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B_COMMAND_KIND = 0,
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B_TYPE_CODE_KIND = 1
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};
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struct value_info {
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char *name;
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uint32 value;
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value_kind kind;
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char *usage;
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uint32 extra_data;
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uint32 _reserved[10];
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};
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#define B_PROPERTY_INFO_TYPE 'SCTD'
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/*----------------------------------------------------------------*/
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/*----- BPropertyInfo class --------------------------------------*/
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class BPropertyInfo : public BFlattenable {
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public:
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BPropertyInfo(property_info *p = NULL,
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value_info *ci = NULL,
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bool free_on_delete = false);
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virtual ~BPropertyInfo();
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virtual int32 FindMatch(BMessage *msg,
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int32 index,
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BMessage *spec,
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int32 form,
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const char *prop,
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void *data = NULL) const;
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virtual bool IsFixedSize() const;
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virtual type_code TypeCode() const;
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virtual ssize_t FlattenedSize() const;
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virtual status_t Flatten(void *buffer, ssize_t size) const;
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virtual bool AllowsTypeCode(type_code code) const;
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virtual status_t Unflatten(type_code c,
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const void *buf,
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ssize_t s);
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const property_info *Properties() const;
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const value_info *Values() const;
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int32 CountProperties() const;
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int32 CountValues() const;
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void PrintToStream() const;
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/*----- Private or reserved -----------------------------------------*/
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protected:
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static bool FindCommand(uint32, int32, property_info *);
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static bool FindSpecifier(uint32, property_info *);
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private:
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virtual void _ReservedPropertyInfo1();
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virtual void _ReservedPropertyInfo2();
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virtual void _ReservedPropertyInfo3();
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virtual void _ReservedPropertyInfo4();
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BPropertyInfo(const BPropertyInfo &);
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BPropertyInfo &operator=(const BPropertyInfo &);
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void FreeMem();
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property_info *fPropInfo;
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value_info *fValueInfo;
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int32 fPropCount;
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bool fInHeap;
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uint16 fValueCount;
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#ifndef R3_COMPATIBLE
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uint32 _reserved[4];
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#else
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_oproperty_info_ *fOldPropInfo;
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bool fOldInHeap;
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uint32 _reserved[2]; /* was 4 */
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/* Deprecated */
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private:
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static property_info *ConvertToNew(const _oproperty_info_ *p);
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static _oproperty_info_ *ConvertFromNew(const property_info *p);
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const property_info *PropertyInfo() const;
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BPropertyInfo(property_info *p,
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bool free_on_delete);
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static bool MatchCommand(uint32, int32, property_info *);
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static bool MatchSpecifier(uint32, property_info *);
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#endif
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};
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/*-------------------------------------------------------------*/
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/*-------------------------------------------------------------*/
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#endif /* _PROPERTY_INFO_H */
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