DtSearchHighlight(library call) 										   DtSearchHighlight(library call)

NAME

       DtSearchHighlight -- Generate DtSrHitwords table for highlighting DtSearch document

SYNOPSIS

       #include <Dt/Search.h>
       intDtSearchHighlight(
       char *dbname,
       char *cleartext,
       DtSrHitword **hitwptr,
       long *hitwcount,
       int search_type,
       char *stems,
       int stemcount);

DESCRIPTION

       The  DtSearchHighlight  function  generates  an array of offsets and lengths (DtSrHitword) of parsed linguistic terms (stems) in the passed
       document cleartext to enable a browser to highlight the words in the text as appropriate for its user interface.

ARGUMENTS

       dbname	 Specifies which database is to be searched.  It  is  any  one	of  the  database  name  strings  returned  from  DtSearchInit	or
		 DtSearchReinit. If dbname is NULL, the first database name string is used.

       cleartext Pointer to a zero terminated C string containing the document text to be highlighted. Usually, but not necessarily, this value is
		 returned from DtSearchRetrieve.

       hitwptr and hitwcount
		 The hitwords array will be stored in hitwptr, the address of a DtSrHitword pointer. The array is dynamically  allocated  by  this
		 function and remains valid until the next call to this function.  The size of the hitwords array will be stored in hitwcount.

       search_type
		 Specifies  the  search_type  of  the DtSearchQuery that generated the stems array. It must be zero, 'P', 'W', or 'S'.	If zero is
		 passed, the search_type of the last call to DtSearchQuery is assumed.

       stems and stemcount
		 stems and stemcount are optional; they can be NULL and zero respectively. However, if either is specified, both  must	be  speci-
		 fied.	If  specified,	they  refer  to  the stems array that was returned from the previous call to DtSearchQuery that ultimately
		 resulted in the cleartext argument.

		 If these arguments are not passed, the stems array from the most recent call to DtSearchQuery is assumed.

RETURN VALUE

       This function returns DtSrOK, as well as a DtSrHitword table, when the table generation is completely successful.

       Any other return code signifies failure and user messages on the MessageList explain why.

       Any API function can also return DtSrREINIT and the return codes for fatal engine errors at any time.

SEE ALSO

       DtSrAPI(3), DtSearchQuery(3), DtSearchRetrieve(3)

														   DtSearchHighlight(library call)