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WNUTIL(3WN)		  WordNettm Library Functions		   WNUTIL(3WN)

       wninit, re_wninit, cntwords, strtolower,	ToLowerCase, strsubst, getptr-
       type, getpos, getsstype,	 StrToPos,  GetSynsetForSense,	GetDataOffset,
       GetPolyCount, WNSnsToStr, GetValidIndexPointer, GetWNSense, GetSenseIn-
       dex, default_display_message

       #include	"wn.h"

       int wninit(void);

       int re_wninit(void);

       int cntwords(char *str, char separator);

       char *strtolower(char *str);

       char *ToLowerCase(char *str);

       char *strsubst(char *str, char from, char to);

       int getptrtype(char *ptr_symbol);

       int getpos(char *ss_type);

       int getsstype(char *ss_type);

       int StrToPos(char pos);

       SynsetPtr GetSynsetForSense(char	*sense_key);

       long GetDataOffset(char *sense_key);

       int GetPolyCount(char *sense_key);

       char *WNSnsToStr(IndexPtr idx, int sense_num);

       IndexPtr	GetValidIndexPointer(char *str,	int pos);

       int GetWNSense(char *lemma, *lex_sense);

       SnsIndexPtr GetSenseIndex(char *sense_key);

       int GetTagcnt(IndexPtr idx, int sense);

       int default_display_message(char	*msg);

       The WordNet library contains many utility functions used	by the	inter-
       face code, other	library	functions, and various applications and	tools.
       Only those of importance	to the WordNet search code, or which are  gen-
       erally useful are described here.

       wninit()	 opens	the files necessary for	using WordNet with the WordNet
       library functions.  The database	files are opened, and  morphinit()  is
       called  to  open	the exception list files.  Returns 0 if	successful, -1
       otherwise.  The database	and exception list files must be  open	before
       the  WordNet search and morphology functions are	used.  If the database
       is successfully opened, the global variable OpenDB is set to  1.	  Note
       that  it	is possible for	the database files to be opened	(OpenDB	== 1),
       but not the exception list files.

       re_wninit() is used to close the	database files and reopen them,	and is
       used  exclusively for WordNet development.  re_morphinit() is called to
       close and reopen	the exception list files.  Return  codes  are  as  de-
       scribed above.

       cntwords()  counts the number of	underscore or space separated words in
       str.  A hyphen is passed	in separator if	is is to be considered a  word
       delimiter.   Otherwise  separator can be	any other character, or	an un-
       derscore	if another character is	not desired.

       strtolower() converts str to lower case and removes a  trailing	adjec-
       tive  marker,  if  present.  str	is actually modified by	this function,
       and a pointer to	the modified string is returned.

       ToLowerCase() converts str to lower case	as above, without removing  an
       adjective marker.

       strsubst()  replaces all	occurrences of from with to in str and returns
       resulting string.

       getptrtype() returns the	integer	ptr_type corresponding to the  pointer
       character  passed  in  ptr_symbol.   See	 wnsearch(3WN)	for a table of
       pointer symbols and types.

       getpos()	returns	the integer constant corresponding to the synset  type
       passed.	 ss_type  may be one of	the following: n, v, a,	r, s.  If s is
       passed, ADJ is returned.	 Exits with -1 if ss_type is invalid.

       getsstype() works like getpos(),	but returns SATELLITE if ss_type is s.

       StrToPos() returns the integer constant corresponding to	the  syntactic
       category	 passed	 in  pos.   string must	be one of the following: noun,
       verb, adj, adv.	-1 is returned if pos is invalid.

       GetSynsetForSense() returns the synset that  contains  the  word	 sense
       sense_key and NULL in case of error.

       GetDataOffset()	returns	the synset offset for synset that contains the
       word sense sense_key, and 0 if sense_key	is not in sense	index file.

       GetPolyCount() returns the polysemy count (number of senses in WordNet)
       for lemma encoded in sense_key and 0 if word is not found.

       WNSnsToStr() returns sense key encoding for sense_num entry in idx.

       GetValidIndexPointer()  returns	the  Index  structure for word in pos.
       Calls morphstr(3WN) to find a valid base	form if	word is	inflected.

       GetWNSense() returns the	WordNet	sense number for the sense key	encod-
       ing represented by lemma	and lex_sense.

       GetSenseIndex() returns parsed sense index entry	for sense_key and NULL
       if sense_key is not in sense index.

       GetTagcnt() returns the number of  times	 the  sense  passed  has  been
       tagged according	to the cntlist file.

       default_display_message() simply	returns	-1.  This is the default value
       for the global variable display_message,	that points to a  function  to
       call  to	display	an error message.  In general, applications (including
       the WordNet interfaces) define an application specific function and set
       display_message to point	to it.

       include/wn.h  lists  all	 the pointer and search	types and their	corre-
       sponding	constant values.  There	is no description of what each	search
       type  is	 or  the results returned.  Using the WordNet interface	is the
       best way	to see what types of searches are available, and the data  re-
       turned for each.

       wnintro(3WN), wnsearch(3WN), morph(3WN),	wnintro(5WN), wnintro(7WN).

       Error  checking	on  passed  arguments  is  not rigorous.  Passing NULL
       pointers	or invalid values will often cause an application to die.

WordNet	3.0			   Dec 2006			   WNUTIL(3WN)


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