lib/parse-sexp: support actual date queries.

[notmuch] / lib / parse-sexp.cc

diff --git a/lib/parse-sexp.cc b/lib/parse-sexp.cc
index 356c32ea254675749e4883743ba75f6fdd648121..dbc3f89d903305969dccc2752582b97d3c45f74a 100644 (file)
--- a/lib/parse-sexp.cc
+++ b/lib/parse-sexp.cc
@@ -32,6 +32,7 @@ typedef enum {
     SEXP_FLAG_EXPAND   = 1 << 6,
     SEXP_FLAG_DO_EXPAND = 1 << 7,
     SEXP_FLAG_ORPHAN   = 1 << 8,
+    SEXP_FLAG_RANGE    = 1 << 9,
 } _sexp_flag_t;
 
 /*
@@ -66,6 +67,8 @@ static _sexp_prefix_t prefixes[] =
       SEXP_FLAG_FIELD | SEXP_FLAG_WILDCARD | SEXP_FLAG_EXPAND },
     { "body",           Xapian::Query::OP_AND,          Xapian::Query::MatchAll,
       SEXP_FLAG_FIELD },
+    { "date",           Xapian::Query::OP_INVALID,      Xapian::Query::MatchAll,
+      SEXP_FLAG_RANGE },
     { "from",           Xapian::Query::OP_AND,          Xapian::Query::MatchAll,
       SEXP_FLAG_FIELD | SEXP_FLAG_WILDCARD | SEXP_FLAG_REGEX | SEXP_FLAG_EXPAND },
     { "folder",         Xapian::Query::OP_OR,           Xapian::Query::MatchNothing,
@@ -446,6 +449,56 @@ _sexp_expand_param (notmuch_database_t *notmuch, const _sexp_prefix_t *parent,
     return NOTMUCH_STATUS_BAD_QUERY_SYNTAX;
 }
 
+static notmuch_status_t
+_sexp_parse_range (notmuch_database_t *notmuch,  const _sexp_prefix_t *prefix,
+                  const sexp_t *sx, Xapian::Query &output)
+{
+    const char *from, *to;
+    std::string msg;
+
+    /* empty range matches everything */
+    if (! sx) {
+       output = Xapian::Query::MatchAll;
+       return NOTMUCH_STATUS_SUCCESS;
+    }
+
+    if (sx->ty == SEXP_LIST) {
+       _notmuch_database_log (notmuch, "expected atom as first argument of '%s'\n", prefix->name);
+       return NOTMUCH_STATUS_BAD_QUERY_SYNTAX;
+    }
+
+    from = sx->val;
+    to = from;
+
+    if (sx->next) {
+       if (sx->next->ty == SEXP_LIST) {
+           _notmuch_database_log (notmuch, "expected atom as second argument of '%s'\n",
+                                  prefix->name);
+           return NOTMUCH_STATUS_BAD_QUERY_SYNTAX;
+       }
+
+       if (sx->next->next) {
+           _notmuch_database_log (notmuch, "'%s' expects maximum of two arguments\n", prefix->name);
+           return NOTMUCH_STATUS_BAD_QUERY_SYNTAX;
+       }
+
+       to = sx->next->val;
+    }
+
+    if (strcmp (prefix->name, "date") == 0) {
+       notmuch_status_t status;
+       status = _notmuch_date_strings_to_query (NOTMUCH_VALUE_TIMESTAMP, from, to, output, msg);
+       if (status) {
+           if (! msg.empty ())
+               _notmuch_database_log (notmuch, "%s\n", msg.c_str ());
+       }
+       return status;
+    }
+
+    _notmuch_database_log (notmuch, "unimplimented range prefix: '%s'\n", prefix->name);
+    return NOTMUCH_STATUS_BAD_QUERY_SYNTAX;
+}
+
 /* Here we expect the s-expression to be a proper list, with first
  * element defining and operation, or as a special case the empty
  * list */
@@ -519,7 +572,7 @@ _sexp_to_xapian_query (notmuch_database_t *notmuch, const _sexp_prefix_t *parent
 
     for (_sexp_prefix_t *prefix = prefixes; prefix && prefix->name; prefix++) {
        if (strcmp (prefix->name, sx->list->val) == 0) {
-           if (prefix->flags & SEXP_FLAG_FIELD) {
+           if (prefix->flags & (SEXP_FLAG_FIELD | SEXP_FLAG_RANGE)) {
                if (parent) {
                    _notmuch_database_log (notmuch, "nested field: '%s' inside '%s'\n",
                                           prefix->name, parent->name);
@@ -541,6 +594,9 @@ _sexp_to_xapian_query (notmuch_database_t *notmuch, const _sexp_prefix_t *parent
                return NOTMUCH_STATUS_BAD_QUERY_SYNTAX;
            }
 
+           if (prefix->flags & SEXP_FLAG_RANGE)
+               return _sexp_parse_range (notmuch, prefix, sx->list->next, output);
+
            if (strcmp (prefix->name, "infix") == 0) {
                return _sexp_parse_infix (notmuch, sx->list->next, output);
            }