PCRE API
Applications using PCRE should look for the API prototypes in pcre.h, and include the actual library file, libpcre.a, by compiling with -lpcre.
Most functionality is contained in the functions pcre_compile( ), which prepares a regular expression data structure, and pcre_exec( ), which performs the pattern matching. You are responsible for freeing memory, although PCRE does provide pcre_free_substring( ) and pcre_free_substring_list( ) to help out.
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