[PATCH 35/36] CLI/tag: enable sexp queries

[David Bremner <david@tethera.net>]

We have to rewrite _optimize_tag_query here because it is generating
a query string in the infix Xapian syntax. Luckily this is easy to do
with the sexp query syntax.
---
 notmuch-tag.c        | 43 ++++++++++++++++++++++++++++++++++++-------
 test/T150-tagging.sh | 43 +++++++++++++++++++++++++++++++++++++++++++
 2 files changed, 79 insertions(+), 7 deletions(-)

diff --git a/notmuch-tag.c b/notmuch-tag.c
index aa886032..71ff06bf 100644
--- a/notmuch-tag.c
+++ b/notmuch-tag.c
@@ -39,8 +39,8 @@ handle_sigint (unused (int sig))
 
 
 static char *
-_optimize_tag_query (void *ctx, const char *orig_query_string,
-		     const tag_op_list_t *list)
+_optimize_tag_query_infix (void *ctx, const char *orig_query_string,
+			   const tag_op_list_t *list)
 {
     /* This is subtler than it looks.  Xapian ignores the '-' operator
      * at the beginning both queries and parenthesized groups and,
@@ -88,6 +88,33 @@ _optimize_tag_query (void *ctx, const char *orig_query_string,
     return query_string;
 }
 
+static char *
+_optimize_tag_query (void *ctx, const char *orig_query_string,
+		     notmuch_query_syntax_t stx,
+		     const tag_op_list_t *list)
+{
+    char *query_string;
+
+    if (stx == NOTMUCH_QUERY_SYNTAX_XAPIAN)
+	return _optimize_tag_query_infix (ctx, orig_query_string, list);
+
+    /* Don't optimize if there are no tag changes. */
+    if (tag_op_list_size (list) == 0)
+	return talloc_strdup (ctx, orig_query_string);
+
+    query_string = talloc_asprintf (ctx, "(and %s", orig_query_string);
+    for (size_t i = 0; i < tag_op_list_size (list) && query_string; i++) {
+	query_string = talloc_asprintf_append_buffer (
+	    query_string, tag_op_list_isremove (list, i) ? " (tag \"%s\")" : " (not (tag \"%s\"))",
+	    tag_op_list_tag (list, i));
+    }
+
+    if (query_string)
+	query_string = talloc_strdup_append_buffer (query_string, ")");
+
+    return query_string;
+}
+
 /* Tag messages matching 'query_string' according to 'tag_ops'
  */
 static int
@@ -104,7 +131,9 @@ tag_query (void *ctx, notmuch_database_t *notmuch, const char *query_string,
     if (! (flags & TAG_FLAG_REMOVE_ALL)) {
 	/* Optimize the query so it excludes messages that already
 	 * have the specified set of tags. */
-	query_string = _optimize_tag_query (ctx, query_string, tag_ops);
+	query_string = _optimize_tag_query (ctx, query_string,
+					    shared_option_query_syntax (),
+					    tag_ops);
 	if (query_string == NULL) {
 	    fprintf (stderr, "Out of memory.\n");
 	    return 1;
@@ -112,11 +141,11 @@ tag_query (void *ctx, notmuch_database_t *notmuch, const char *query_string,
 	flags |= TAG_FLAG_PRE_OPTIMIZED;
     }
 
-    query = notmuch_query_create (notmuch, query_string);
-    if (query == NULL) {
-	fprintf (stderr, "Out of memory.\n");
+    status = notmuch_query_create_with_syntax (notmuch, query_string,
+					       shared_option_query_syntax (),
+					       &query);
+    if (print_status_database ("notmuch tag", notmuch, status))
 	return 1;
-    }
 
     /* tagging is not interested in any special sort order */
     notmuch_query_set_sort (query, NOTMUCH_SORT_UNSORTED);
diff --git a/test/T150-tagging.sh b/test/T150-tagging.sh
index c292b24e..1a2fd77e 100755
--- a/test/T150-tagging.sh
+++ b/test/T150-tagging.sh
@@ -2,6 +2,21 @@
 test_description='"notmuch tag"'
 . $(dirname "$0")/test-lib.sh || exit 1
 
+test_query_syntax () {
+    # use a tag with a space to stress the query string munging code.
+    local new_tag="${RANDOM} ${RANDOM}"
+    test_begin_subtest "sexpr query: $1"
+    backup_database
+    notmuch tag --query=sexp "+${new_tag}" -- "$1"
+    notmuch dump > OUTPUT
+    restore_database
+    backup_database
+    notmuch tag "+${new_tag}" -- "$2"
+    notmuch dump > EXPECTED
+    restore_database
+    test_expect_equal_file_nonempty EXPECTED OUTPUT
+}
+
 add_message '[subject]=One'
 add_message '[subject]=Two'
 
@@ -310,4 +325,32 @@ output=$(notmuch tag +something '*' 2>&1 | sed 's/: .*$//' )
 chmod u+w ${MAIL_DIR}/.notmuch/xapian/*.*
 test_expect_equal "$output" "A Xapian exception occurred opening database"
 
+add_email_corpus
+
+if [ $NOTMUCH_HAVE_SFSEXP -eq 1 ]; then
+
+    test_query_syntax '(and "wonderful" "wizard")' 'wonderful and wizard'
+    test_query_syntax '(or "php" "wizard")' 'php or wizard'
+    test_query_syntax 'wizard' 'wizard'
+    test_query_syntax 'Wizard' 'Wizard'
+    test_query_syntax '(attachment notmuch-help.patch)' 'attachment:notmuch-help.patch'
+    test_query_syntax '(mimetype text/html)' 'mimetype:text/html'
+
+    test_begin_subtest "--batch --query=sexp"
+    notmuch dump --format=batch-tag > backup.tags
+    notmuch tag --batch --query=sexp  <<EOF
+    +all -- (or One Two)
+    +none -- (and One Two)
+    EOF
+    notmuch dump > OUTPUT
+    cat <<EOF > EXPECTED
+    #notmuch-dump batch-tag:3 config,properties,tags
+    +all +inbox +tag5 +unread -- id:msg-001@notmuch-test-suite
+    +all +inbox +tag4 +tag5 +unread -- id:msg-002@notmuch-test-suite
+EOF
+    notmuch restore --format=batch-tag < backup.tags
+    test_expect_equal_file EXPECTED OUTPUT
+
+fi
+
 test_done
-- 
2.32.0