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Updated: Wednesday, July 27, 2022
 
 

pcre_study (3)

Name

pcre_study - compatible regular expressions

Synopsis

#include <pcre.h>

pcre_extra *pcre_study(const pcre *code, int options,
const char **errptr);

pcre16_extra *pcre16_study(const pcre16 *code, int options,
const char **errptr);

pcre32_extra *pcre32_study(const pcre32 *code, int options,
const char **errptr);

Description

PCRE_STUDY(3)              Library Functions Manual              PCRE_STUDY(3)



NAME
       PCRE - Perl-compatible regular expressions

SYNOPSIS

       #include <pcre.h>

       pcre_extra *pcre_study(const pcre *code, int options,
            const char **errptr);

       pcre16_extra *pcre16_study(const pcre16 *code, int options,
            const char **errptr);

       pcre32_extra *pcre32_study(const pcre32 *code, int options,
            const char **errptr);

DESCRIPTION

       This function studies a compiled pattern, to see if additional informa-
       tion can be extracted that might speed up matching. Its arguments are:

         code       A compiled regular expression
         options    Options for pcre[16|32]_study()
         errptr     Where to put an error message

       If the function succeeds, it returns a value  that  can  be  passed  to
       pcre[16|32]_exec() or pcre[16|32]_dfa_exec() via their extra arguments.

       If  the  function returns NULL, either it could not find any additional
       information, or there was an error. You  can  tell  the  difference  by
       looking at the error value. It is NULL in first case.

       The  only  option  is  PCRE_STUDY_JIT_COMPILE. It requests just-in-time
       compilation if possible. If PCRE has been compiled without JIT support,
       this option is ignored. See the pcrejit page for further details.

       There  is  a complete description of the PCRE native API in the pcreapi
       page and a description of the POSIX API in the pcreposix page.



ATTRIBUTES
       See attributes(7) for descriptions of the following attributes:


       +---------------+------------------+
       |ATTRIBUTE TYPE | ATTRIBUTE VALUE  |
       +---------------+------------------+
       |Availability   | library/pcre     |
       +---------------+------------------+
       |Stability      | Uncommitted      |
       +---------------+------------------+

NOTES
       Source code for open source software components in Oracle  Solaris  can
       be found at https://www.oracle.com/downloads/opensource/solaris-source-
       code-downloads.html.

       This    software    was    built    from    source     available     at
       https://github.com/oracle/solaris-userland.    The  original  community
       source        was        downloaded        from         https://source-
       forge.net/projects/pcre/files/pcre/8.45/pcre-8.45.tar.gz.

       Further information about this software can be found on the open source
       community website at http://pcre.org/.



PCRE 8.30                         24 June 2012                   PCRE_STUDY(3)