Section (3) pcre2_substring_nametable_scan
PCRE2 — Perl-compatible regular expressions (revised API)
#include <pcre2.h> int pcre2_substring_nametable_scan(const pcre2_code *
name, PCRE2_SPTR *
first, PCRE2_SPTR *
This convenience function finds, for a compiled pattern, the first and last entries for a given name in the table that translates capture group names into numbers.
codeCompiled regular expression
nameName whose entries required
firstWhere to return a pointer to the first entry
lastWhere to return a pointer to the last entry
When the name is found in the table, if
first is NULL, the function returns a group
number, but if there is more than one matching entry, it is
not defined which one. Otherwise, when both pointers have
been set, the yield of the function is the length of each
entry in code units. If the name is not found,
PCRE2_ERROR_NOSUBSTRING is returned.
This manual page is taken from the PCRE library, which is distributed under the BSD license.