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[80.223.81.27]) by mx.google.com with ESMTPS id fd1sm2256327lbb.7.2012.08.03.14.52.09 (version=SSLv3 cipher=OTHER); Fri, 03 Aug 2012 14:52:10 -0700 (PDT) From: Jani Nikula To: notmuch@notmuchmail.org Subject: [PATCH 5/7] lib: add date range query support Date: Sat, 4 Aug 2012 00:51:50 +0300 Message-Id: <8aeefad3bb883a9fba5a9db4619b031cd7f290a3.1344028781.git.jani@nikula.org> X-Mailer: git-send-email 1.7.9.5 In-Reply-To: References: In-Reply-To: References: X-Gm-Message-State: ALoCoQkiO8ePGH7LERqgybAkBJjgX3l7C0PEfYm/UaRbMNBknWVPGyRyTO91ysiIeXs9g5BW9+U/ X-BeenThere: notmuch@notmuchmail.org X-Mailman-Version: 2.1.13 Precedence: list List-Id: "Use and development of the notmuch mail system." List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Fri, 03 Aug 2012 21:52:14 -0000 Add a custom value range processor to enable date and time searches of the form date:since..until, where "since" and "until" are expressions understood by the previously added date/time parser, to restrict the results to messages within a particular time range (based on the Date: header). If "since" or "until" describes date/time at an accuracy of days or less, the values are rounded according to the accuracy, towards past for "since" and towards future for "until". For example, date:november..yesterday would match from the beginning of November until the end of yesterday. Expressions such as date:today..today means since the beginning of today until the end of today. Open-ended ranges are supported (since Xapian 1.2.1), i.e. you can specify date:..until or date:since.. to not limit the start or end date, respectively. CAVEATS: Xapian does not support spaces in range expressions. You can replace the spaces with '_', or (in most cases) '-', or (in some cases) leave the spaces out altogether. Entering date:expr without ".." (for example date:yesterday) will not work as you might expect. You can achieve the expected result by duplicating the expr both sides of ".." (for example date:yesterday..yesterday). Open-ended ranges won't work with pre-1.2.1 Xapian, but they don't produce an error either. Signed-off-by: Jani Nikula --- lib/Makefile.local | 1 + lib/database-private.h | 1 + lib/database.cc | 5 +++++ lib/parse-time-vrp.cc | 40 ++++++++++++++++++++++++++++++++++++++++ lib/parse-time-vrp.h | 19 +++++++++++++++++++ 5 files changed, 66 insertions(+) create mode 100644 lib/parse-time-vrp.cc create mode 100644 lib/parse-time-vrp.h diff --git a/lib/Makefile.local b/lib/Makefile.local index e29c3a2..e872ea1 100644 --- a/lib/Makefile.local +++ b/lib/Makefile.local @@ -59,6 +59,7 @@ libnotmuch_c_srcs = \ libnotmuch_cxx_srcs = \ $(dir)/database.cc \ + $(dir)/parse-time-vrp.cc \ $(dir)/directory.cc \ $(dir)/index.cc \ $(dir)/message.cc \ diff --git a/lib/database-private.h b/lib/database-private.h index 88532d5..d3e65fd 100644 --- a/lib/database-private.h +++ b/lib/database-private.h @@ -52,6 +52,7 @@ struct _notmuch_database { Xapian::QueryParser *query_parser; Xapian::TermGenerator *term_gen; Xapian::ValueRangeProcessor *value_range_processor; + Xapian::ValueRangeProcessor *date_range_processor; }; /* Return the list of terms from the given iterator matching a prefix. diff --git a/lib/database.cc b/lib/database.cc index 761dc1a..4df3217 100644 --- a/lib/database.cc +++ b/lib/database.cc @@ -19,6 +19,7 @@ */ #include "database-private.h" +#include "parse-time-vrp.h" #include @@ -710,12 +711,14 @@ notmuch_database_open (const char *path, notmuch->term_gen = new Xapian::TermGenerator; notmuch->term_gen->set_stemmer (Xapian::Stem ("english")); notmuch->value_range_processor = new Xapian::NumberValueRangeProcessor (NOTMUCH_VALUE_TIMESTAMP); + notmuch->date_range_processor = new ParseTimeValueRangeProcessor (NOTMUCH_VALUE_TIMESTAMP); notmuch->query_parser->set_default_op (Xapian::Query::OP_AND); notmuch->query_parser->set_database (*notmuch->xapian_db); notmuch->query_parser->set_stemmer (Xapian::Stem ("english")); notmuch->query_parser->set_stemming_strategy (Xapian::QueryParser::STEM_SOME); notmuch->query_parser->add_valuerangeprocessor (notmuch->value_range_processor); + notmuch->query_parser->add_valuerangeprocessor (notmuch->date_range_processor); for (i = 0; i < ARRAY_SIZE (BOOLEAN_PREFIX_EXTERNAL); i++) { prefix_t *prefix = &BOOLEAN_PREFIX_EXTERNAL[i]; @@ -778,6 +781,8 @@ notmuch_database_close (notmuch_database_t *notmuch) notmuch->xapian_db = NULL; delete notmuch->value_range_processor; notmuch->value_range_processor = NULL; + delete notmuch->date_range_processor; + notmuch->date_range_processor = NULL; } void diff --git a/lib/parse-time-vrp.cc b/lib/parse-time-vrp.cc new file mode 100644 index 0000000..148c117 --- /dev/null +++ b/lib/parse-time-vrp.cc @@ -0,0 +1,40 @@ + +#include "database-private.h" +#include "parse-time-vrp.h" +#include "parse-time-string.h" + +#define PREFIX "date:" + +/* See *ValueRangeProcessor in xapian-core/api/valuerangeproc.cc */ +Xapian::valueno +ParseTimeValueRangeProcessor::operator() (std::string &begin, std::string &end) +{ + time_t t, now; + + /* Require date: prefix in start of the range... */ + if (STRNCMP_LITERAL (begin.c_str (), PREFIX)) + return Xapian::BAD_VALUENO; + + /* ...and remove it. */ + begin.erase (0, sizeof (PREFIX) - 1); + + /* Use the same 'now' for begin and end. */ + if (time (&now) == (time_t) -1) + return Xapian::BAD_VALUENO; + + if (!begin.empty ()) { + if (parse_time_string (begin.c_str (), &t, &now, PARSE_TIME_ROUND_DOWN)) + return Xapian::BAD_VALUENO; + + begin.assign (Xapian::sortable_serialise ((double) t)); + } + + if (!end.empty ()) { + if (parse_time_string (end.c_str (), &t, &now, PARSE_TIME_ROUND_UP)) + return Xapian::BAD_VALUENO; + + end.assign (Xapian::sortable_serialise ((double) t)); + } + + return valno; +} diff --git a/lib/parse-time-vrp.h b/lib/parse-time-vrp.h new file mode 100644 index 0000000..526c217 --- /dev/null +++ b/lib/parse-time-vrp.h @@ -0,0 +1,19 @@ + +#ifndef NOTMUCH_PARSE_TIME_VRP_H +#define NOTMUCH_PARSE_TIME_VRP_H + +#include + +/* see *ValueRangeProcessor in xapian-core/include/xapian/queryparser.h */ +class ParseTimeValueRangeProcessor : public Xapian::ValueRangeProcessor { +protected: + Xapian::valueno valno; + +public: + ParseTimeValueRangeProcessor (Xapian::valueno slot_) + : valno(slot_) { } + + Xapian::valueno operator() (std::string &begin, std::string &end); +}; + +#endif /* NOTMUCH_PARSE_TIME_VRP_H */ -- 1.7.9.5