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regex

Added by Dave H over 4 years ago

What dialect of regex does TVH speak? I did a quick search but haven't found any docs.

I tried "New:.*(?!WWE)" without the double quotes, but it just deletes it. "New:" by itself works. "New:.*" works so it seems it doesn't like (?!WWE) so is there any way to achieve that? (a negative search)


Replies (4)

RE: regex - Added by Dave H over 4 years ago

Thanks Dave. So it appears it depends on the particular regex engine in use and it says: "If either the PCRE or the PCRE2 library are found during configuration, that library can be used for regular expression matching."

Now I have both libpcre1 and libpcre2, so when does this configuration take place? When TVH is compiled, built, installed or run? I suspect compilation, because the UK readme says: "TvHeadend is often compiled with the PCRE regular expression library". In which case I can blame my distro for not compiling it with one of the extended libraries, but I'd like to be sure of my facts.

RE: regex - Added by Jim Hague over 4 years ago

The regex engine is determined at compile time as part of the compile configuration process.

RE: regex - Added by Dave H over 4 years ago

Thanks, Jim.

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