PCRE2 – Perl-compatible regular expressions (revised API)
Synopsis
#include <pcre2.h>
int pcre2_config(uint32_t what, void *where);
Description
This function makes it possible for a client program to find out which optional features are available in the version of the PCRE2 library it is using. The arguments are as follows:
what A code specifying what information is required
where Points to where to put the information If where is NULL, the function returns the amount of memory needed for the requested information. When the information is a string, the value is in code units; for other types of data it is in bytes. If where is not NULL, for PCRE2_CONFIG_JITTARGET, PCRE2_CONFIG_UNICODE_VERSION, and PCRE2_CONFIG_VERSION it must point to a buffer that is large enough to hold the string. For all other codes it must point to a uint32_t integer variable. The available codes are: The function yields a non-negative value on success or the negative value PCRE2_ERROR_BADOPTION otherwise. This is also the result for the PCRE2_CONFIG_JITTARGET code if JIT support is not available. When a string is requested, the function returns the number of code units used, including the terminating zero. There is a complete description of the PCRE2 native API in the pcre2api page and a description of the POSIX API in the pcre2posix page.
