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| author | David Bremner <david@tethera.net> | 2017-03-24 19:52:51 -0300 |
|---|---|---|
| committer | David Bremner <david@tethera.net> | 2017-03-29 20:44:32 -0300 |
| commit | cb84f8487833c19ce13edb769fa6421547077725 (patch) | |
| tree | 23d688469092f86913bcd5eb75d111edd5b98153 /lib | |
| parent | bc0c051e042650106c5772d1817af1f7db32fb92 (diff) | |
lib: handle empty string in regexp field processors
The non-field processor behaviour is is convert the corresponding
queries into a search for the unprefixed terms. This yields pretty
surprising results so I decided to generate a query that would match
the terms (i.e. none with that prefix) generated for an empty header.
Diffstat (limited to 'lib')
| -rw-r--r-- | lib/regexp-fields.cc | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/lib/regexp-fields.cc b/lib/regexp-fields.cc index 9dcf9732..1651677c 100644 --- a/lib/regexp-fields.cc +++ b/lib/regexp-fields.cc @@ -148,6 +148,11 @@ RegexpFieldProcessor::RegexpFieldProcessor (std::string prefix, Xapian::QueryPar Xapian::Query RegexpFieldProcessor::operator() (const std::string & str) { + if (str.size () == 0) + return Xapian::Query(Xapian::Query::OP_AND_NOT, + Xapian::Query::MatchAll, + Xapian::Query (Xapian::Query::OP_WILDCARD, term_prefix)); + if (str.at (0) == '/') { if (str.at (str.size () - 1) == '/'){ RegexpPostingSource *postings = new RegexpPostingSource (slot, str.substr(1,str.size () - 2)); |