#include "notmuch-private.h"
#include "database-private.h"
-#if HAVE_XAPIAN_FIELD_PROCESSOR
-static void
-compile_regex (regex_t ®exp, const char *str)
+notmuch_status_t
+compile_regex (regex_t ®exp, const char *str, std::string &msg)
{
int err = regcomp (®exp, str, REG_EXTENDED | REG_NOSUB);
if (err != 0) {
size_t len = regerror (err, ®exp, NULL, 0);
char *buffer = new char[len];
- std::string msg;
+ msg = "Regexp error: ";
(void) regerror (err, ®exp, buffer, len);
- msg.assign (buffer, len);
+ msg.append (buffer, len);
delete[] buffer;
- throw Xapian::QueryParserError (msg);
+ return NOTMUCH_STATUS_ILLEGAL_ARGUMENT;
}
+ return NOTMUCH_STATUS_SUCCESS;
}
RegexpPostingSource::RegexpPostingSource (Xapian::valueno slot, const std::string ®exp)
: slot_ (slot)
{
- compile_regex (regexp_, regexp.c_str ());
+ std::string msg;
+ notmuch_status_t status = compile_regex (regexp_, regexp.c_str (), msg);
+
+ if (status)
+ throw Xapian::QueryParserError (msg);
}
RegexpPostingSource::~RegexpPostingSource ()
RegexpPostingSource::check (Xapian::docid did, unused (double min_wt))
{
started_ = true;
- if (!it_.check (did) || at_end ())
+ if (! it_.check (did) || at_end ())
return false;
return (regexec (®exp_, (*it_).c_str (), 0, NULL, 0) == 0);
}
-static inline Xapian::valueno _find_slot (std::string prefix)
+static inline Xapian::valueno
+_find_slot (std::string prefix)
{
if (prefix == "from")
return NOTMUCH_VALUE_FROM;
else if (prefix == "subject")
return NOTMUCH_VALUE_SUBJECT;
+ else if (prefix == "mid")
+ return NOTMUCH_VALUE_MESSAGE_ID;
else
- throw Xapian::QueryParserError ("unsupported regexp field '" + prefix + "'");
+ return Xapian::BAD_VALUENO;
}
-RegexpFieldProcessor::RegexpFieldProcessor (std::string prefix, Xapian::QueryParser &parser_, notmuch_database_t *notmuch_)
- : slot (_find_slot (prefix)), term_prefix (_find_prefix (prefix.c_str ())),
- parser (parser_), notmuch (notmuch_)
+RegexpFieldProcessor::RegexpFieldProcessor (std::string field_,
+ notmuch_field_flag_t options_,
+ Xapian::QueryParser &parser_,
+ notmuch_database_t *notmuch_)
+ : slot (_find_slot (field_)),
+ field (field_),
+ term_prefix (_find_prefix (field_.c_str ())),
+ options (options_),
+ parser (parser_),
+ notmuch (notmuch_)
{
};
+notmuch_status_t
+_notmuch_regexp_to_query (notmuch_database_t *notmuch, Xapian::valueno slot, std::string field,
+ std::string regexp_str,
+ Xapian::Query &output, std::string &msg)
+{
+ regex_t regexp;
+ notmuch_status_t status;
+
+ status = compile_regex (regexp, regexp_str.c_str (), msg);
+ if (status) {
+ _notmuch_database_log_append (notmuch, "error compiling regex %s", msg.c_str ());
+ return status;
+ }
+
+ if (slot == Xapian::BAD_VALUENO)
+ slot = _find_slot (field);
+
+ if (slot == Xapian::BAD_VALUENO) {
+ std::string term_prefix = _find_prefix (field.c_str ());
+ std::vector<std::string> terms;
+
+ for (Xapian::TermIterator it = notmuch->xapian_db->allterms_begin (term_prefix);
+ it != notmuch->xapian_db->allterms_end (); ++it) {
+ if (regexec (®exp, (*it).c_str () + term_prefix.size (),
+ 0, NULL, 0) == 0)
+ terms.push_back (*it);
+ }
+ output = Xapian::Query (Xapian::Query::OP_OR, terms.begin (), terms.end ());
+ } else {
+ RegexpPostingSource *postings = new RegexpPostingSource (slot, regexp_str);
+ output = Xapian::Query (postings->release ());
+ }
+ return NOTMUCH_STATUS_SUCCESS;
+}
+
Xapian::Query
RegexpFieldProcessor::operator() (const std::string & str)
{
+ if (str.empty ()) {
+ if (options & NOTMUCH_FIELD_PROBABILISTIC) {
+ return Xapian::Query (Xapian::Query::OP_AND_NOT,
+ Xapian::Query::MatchAll,
+ Xapian::Query (Xapian::Query::OP_WILDCARD, term_prefix));
+ } else {
+ return Xapian::Query (term_prefix);
+ }
+ }
+
if (str.at (0) == '/') {
- if (str.at (str.size () - 1) == '/'){
- RegexpPostingSource *postings = new RegexpPostingSource (slot, str.substr(1,str.size () - 2));
- return Xapian::Query (postings->release ());
+ if (str.length () > 1 && str.at (str.size () - 1) == '/') {
+ Xapian::Query query;
+ std::string regexp_str = str.substr (1, str.size () - 2);
+ std::string msg;
+ notmuch_status_t status;
+
+ status = _notmuch_regexp_to_query (notmuch, slot, field, regexp_str, query, msg);
+ if (status)
+ throw Xapian::QueryParserError (msg);
+ return query;
} else {
throw Xapian::QueryParserError ("unmatched regex delimiter in '" + str + "'");
}
} else {
- /* TODO replace this with a nicer API level triggering of
- * phrase parsing, when possible */
- std::string query_str;
+ if (options & NOTMUCH_FIELD_PROBABILISTIC) {
+ /* TODO replace this with a nicer API level triggering of
+ * phrase parsing, when possible */
+ std::string query_str;
+
+ if (*str.rbegin () != '*' || str.find (' ') != std::string::npos)
+ query_str = '"' + str + '"';
+ else
+ query_str = str;
- if (str.find (' ') != std::string::npos)
- query_str = '"' + str + '"';
- else
- query_str = str;
+ return parser.parse_query (query_str, NOTMUCH_QUERY_PARSER_FLAGS, term_prefix);
+ } else {
+ /* Boolean prefix */
+ std::string query_str;
+ std::string term;
- return parser.parse_query (query_str, NOTMUCH_QUERY_PARSER_FLAGS, term_prefix);
+ if (str.length () > 1 && str.at (str.size () - 1) == '/')
+ query_str = str.substr (0, str.size () - 1);
+ else
+ query_str = str;
+
+ term = term_prefix + query_str;
+ return Xapian::Query (term);
+ }
}
}
-#endif