notmuch dump: Fix the sorting of results.

To properly support sorting in notmuch_query we know use an
Enquire object. We also throw in a QueryParser too, so we're
really close to being able to support arbitrary full-text
searches.

I took a look at the supported QueryParser syntax and chose
a set of flags for everything I like, (such as supporting
Boolean operators in either case ("AND" or "and"), supporting
phrase searching, supporting + and - to include/preclude terms,
and supporting a trailing * on any term as a wildcard).

1 files changed, 9 insertions, 0 deletions

diff --git a/notmuch-private.h b/notmuch-private.h
index 728c1a67..2bf6beb4 100644
--- a/notmuch-private.h
+++ b/notmuch-private.h
@@ -66,6 +66,15 @@ NOTMUCH_BEGIN_DECLS
 #endif
 #endif
 
+/* These value numbers are chosen to be sup compatible (for now at
+ * least). */
+
+typedef enum {
+    NOTMUCH_VALUE_MESSAGE_ID = 0,
+    NOTMUCH_VALUE_THREAD = 1,
+    NOTMUCH_VALUE_DATE = 2
+} notmuch_value_t;
+
 /* xutil.c */
 void *
 xcalloc (size_t nmemb, size_t size);