pcre_study.c

Function pcre_study

This function is handed a compiled expression that it must study to produce information that will speed up the matching. It returns a pcre_extra block which then gets handed back to pcre_exec().

Synopsis

Prototype

pcre_extra* pcre_study (
      const pcre* external_re,
      int options,
      const char** errorptr
);

Type	Name	Read/Write	Description
const pcre*	external_re	Input	points to the compiled expression
int	options	Input	contains option bits
const char**	errorptr	Output	points to where to place error messages; set NULL unless error
pcre_extra*		RETURN	pointer to a pcre_extra block, with study_data filled in and the appropriate flag set; NULL on error or if no optimization possible

Input

Output

Returns

Description

This function is handed a compiled expression that it must study to produce information that will speed up the matching. It returns a pcre_extra block which then gets handed back to pcre_exec().

Usage

Example

Errors

Dependencies

See Also

Availability