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/*
IXAttributeParser.h
Copyright 1991, NeXT Computer, Inc.
*/
#import <objc/Object.h>
#import <objc/hashtable.h>
#import <dpsclient/dpsclient.h>
#import "protocols.h"
@class List, IXAttributeBinder, IXFileConverter, IXWeightingDomain;
/* These atoms define standard attributes generated by the attribute parser.*/
extern NXAtom IXDefaultAttribute;
extern NXAtom IXContentAttribute;
/* These atoms define pasteboard types used by the attribute parser. The */
/* former is the for the tokenized format produced by attribute readers. The */
/* latter is for file descriptions generated by pasteboard file filters.*/
extern NXAtom IXAttributeReaderPboardType;
extern NXAtom IXFileDescriptionPboardType;
/* These are the types of weighting applied to tokens by the attribute parser. */
/* Absolute weighting produces weights representing the number of occurrences */
/* of the token. Frequency weighting produces weights representing the count */
/* divided by the total number of tokens in the sample. Peculiarity weighting */
/* produces weights representing the frequency relative to a weighting domain.*/
typedef enum {
IX_NoWeighting = 0,
IX_AbsoluteWeighting, IX_FrequencyWeighting, IX_PeculiarityWeighting
} IXWeightingType;
@interface IXAttributeParser: Object <IXAttributeBinding>
{
BOOL _tokenUniquing;
NXHashTable *_sourceTypes;
id _attributeBinder;
id _fileConverter;
List *_attributeMapping;
List *_attributeReaders;
IXWeightingType _weightingType;
IXWeightingDomain *_weightingDomain;
unsigned _minimumWeight;
unsigned _percentPassed;
}
/* This method returns a DPSPortProc that does pasteboard access in the main */
/* thread of an appkit program, and takes the port that the proc will wait on.*/
+ (DPSPortProc)getFilterHandler:(port_t)filterPort;
/* These methods manage the list of attribute readers. The source stream is */
/* pipelined through the list of readers in the order in which they appear.*/
- getAttributeReaders:(List *)aList; /* fills the list with installed readers.*/
- setAttributeReaders:(List *)aList; /* sets the readers from the supplied list.*/
- (BOOL)understandsType:(const char *)type; /* always yes until types are added*/
- addSourceType:(const char *)type; /* adds to the set of understood types*/
- removeSourceType:(const char *)type; /* removes a previously understood type*/
@end
@interface IXAttributeParser(Parsing)
- reset; /* clears the accumulated attribute bindings*/
/* if type is NULL or empty, this method will type the file*/
- parseFile:(const char *)filename ofType:(const char *)type;
- parseStream:(NXStream *)stream ofType:(const char *)type;
/* These methods pass the source through the list of attribute parsers, */
/* producing attribute reader format, rather than attribute bindings.*/
/* if type is NULL or empty, this method will type the file*/
- (NXStream *)analyzeFile:(const char *)filename ofType:(const char *)type;
- (NXStream *)analyzeStream:(NXStream *)stream ofType:(const char *)type;
@end
@interface IXAttributeParser(Configuration)
- (unsigned)minimumWeight; /* returns minimum weight*/
- setMinimumWeight:(unsigned)aMinimum; /* sets minimum weight*/
- (unsigned)percentPassed; /* returns per centage passed*/
- setPercentPassed:(unsigned)aPercent; /* sets per centage passed*/
- (IXWeightingDomain *)weightingDomain; /* returns weighting domain*/
- setWeightingDomain:(IXWeightingDomain *)aDomain; /* sets weighting domain*/
- (IXWeightingType)weightingType; /* returns weighting type */
- setWeightingType:(IXWeightingType)type; /* sets weighting type*/
- (IXFileConverter *)fileConverter; /* returns file converter*/
- setFileConverter:(IXFileConverter *)aConverter; /* sets file converter*/
@end
These are the contents of the former NiCE NeXT User Group NeXTSTEP/OpenStep software archive, currently hosted by Netfuture.ch.