1 files changed, 99 insertions, 0 deletions
diff --git a/src/plugins/fts/fts-search-serialize.c b/src/plugins/fts/fts-search-serialize.c
new file mode 100644
index 0000000..e30d4ce
--- /dev/null
+++ b/src/plugins/fts/fts-search-serialize.c
@@ -0,0 +1,99 @@
+/* Copyright (c) 2011-2018 Dovecot authors, see the included COPYING file */
+
+#include "lib.h"
+#include "buffer.h"
+#include "mail-search.h"
+#include "fts-search-serialize.h"
+
+#define HAVE_SUBARGS(arg) \
+	((arg)->type == SEARCH_SUB || (arg)->type == SEARCH_OR)
+
+void fts_search_serialize(buffer_t *buf, const struct mail_search_arg *args)
+{
+	char chr;
+
+	for (; args != NULL; args = args->next) {
+		chr = (args->match_always ? 1 : 0) |
+			(args->nonmatch_always ? 2 : 0);
+		buffer_append_c(buf, chr);
+
+		if (HAVE_SUBARGS(args))
+			fts_search_serialize(buf, args->value.subargs);
+	}
+}
+
+static void fts_search_deserialize_idx(struct mail_search_arg *args,
+				       const buffer_t *buf, unsigned int *idx)
+{
+	const char *data = buf->data;
+
+	for (; args != NULL; args = args->next) {
+		i_assert(*idx < buf->used);
+
+		args->match_always = (data[*idx] & 1) != 0;
+		args->nonmatch_always = (data[*idx] & 2) != 0;
+		args->result = args->match_always ? 1 :
+			(args->nonmatch_always ? 0 : -1);
+		*idx += 1;
+
+		if (HAVE_SUBARGS(args)) {
+			fts_search_deserialize_idx(args->value.subargs,
+						   buf, idx);
+		}
+	}
+}
+
+void fts_search_deserialize(struct mail_search_arg *args,
+			    const buffer_t *buf)
+{
+	unsigned int idx = 0;
+
+	fts_search_deserialize_idx(args, buf, &idx);
+	i_assert(idx == buf->used);
+}
+
+static void
+fts_search_deserialize_add_idx(struct mail_search_arg *args,
+			       const buffer_t *buf, unsigned int *idx,
+			       bool matches)
+{
+	const char *data = buf->data;
+
+	for (; args != NULL; args = args->next) {
+		i_assert(*idx < buf->used);
+
+		if (data[*idx] != 0) {
+			if (matches) {
+				args->match_always = TRUE;
+				args->result = 1;
+			} else {
+				args->nonmatch_always = TRUE;
+				args->result = 0;
+			}
+		}
+		*idx += 1;
+
+		if (HAVE_SUBARGS(args)) {
+			fts_search_deserialize_add_idx(args->value.subargs,
+						       buf, idx, matches);
+		}
+	}
+}
+
+void fts_search_deserialize_add_matches(struct mail_search_arg *args,
+					const buffer_t *buf)
+{
+	unsigned int idx = 0;
+
+	fts_search_deserialize_add_idx(args, buf, &idx, TRUE);
+	i_assert(idx == buf->used);
+}
+
+void fts_search_deserialize_add_nonmatches(struct mail_search_arg *args,
+					   const buffer_t *buf)
+{
+	unsigned int idx = 0;
+
+	fts_search_deserialize_add_idx(args, buf, &idx, FALSE);
+	i_assert(idx == buf->used);
+}