bionic (3) wnutil.3WN.gz

NAME

       wninit,  re_wninit, cntwords, strtolower, ToLowerCase, strsubst, getptrtype, getpos, getsstype, StrToPos,
       GetSynsetForSense,   GetDataOffset,   GetPolyCount,   WNSnsToStr,    GetValidIndexPointer,    GetWNSense,
       GetSenseIndex, default_display_message - utility functions used by the interface code

SYNOPSIS

       #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);

DESCRIPTION

       The  WordNet library contains many utility functions used by the interface code, other library functions,
       and various applications and tools.  Only those of importance to the WordNet search code,  or  which  are
       generally 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
       described 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 underscore if another character is not desired.

       strtolower() converts str to lower case and removes a trailing adjective  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 encoding 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.

NOTES

       include/wn.h lists all the pointer and search types and their corresponding 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 returned for each.

SEE ALSO

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

WARNINGS

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