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BINSRCH(3WN)		  WordNettm Library Functions		  BINSRCH(3WN)

NAME
       bin_search, copyfile, replace_line, insert_line

SYNOPSIS
       char *bin_search(char *key, FILE	*fp);

       void copyfile(FILE *fromfp, FILE	*tofp);

       char *replace_line(char *new_line, char *key, FILE *fp);

       char *insert_line(char *new_line, char *key, FILE *fp);

DESCRIPTION
       The WordNet library contains several general purpose functions for per-
       forming a binary	search and modifying sorted files.

       bin_search()  is	 the primary binary search algorithm to	search for key
       as the first item on a line in the file pointed to by fp.   The	delim-
       iter  between  the  key and the rest of the fields on the line, if any,
       must be a space.	 A pointer to a	static variable	containing the	entire
       line is returned.  NULL is returned if a	match is not found.

       The  remaining  functions are not used by WordNet, and are only briefly
       described.

       copyfile() copies the contents of one file to another.

       replace_line() replaces a line in a file	having searchkey key with  the
       contents	 of new_line.  It returns the original line or NULL in case of
       error.

       insert_line()  finds  the  proper  place	 to  insert  the  contents  of
       new_line, having	searchkey key in the sorted file pointed to by fp.  It
       returns NULL if a line with this	searchkey is already in	the file.

NOTES
       The maximum length of key is 1024.

       The maximum line	length in a file is 25K.

       If there	are no additional fields after the search key, the key must be
       followed	by at least one	space before the newline character.

SEE ALSO
       wnintro(3WN), morph(3WN), wnsearch(3WN),	wnutil(3WN), wnintro(5WN).

WARNINGS
       binsearch()  returns  a	pointer	to a static character buffer.  The re-
       turned string should be copied by the caller if the results need	to  be
       saved,  as  a  subsequent  call will replace the	contents of the	static
       buffer.

WordNet	3.0			   Dec 2006			  BINSRCH(3WN)

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