[PATCH 01/24] lib: add _notmuch_string_map_set

[David Bremner <david@tethera.net>]

This will be used (and tested) by the configuration caching code to be
added in the next commit.
---
 lib/notmuch-private.h |  5 +++++
 lib/string-map.c      | 15 +++++++++++++++
 2 files changed, 20 insertions(+)

diff --git a/lib/notmuch-private.h b/lib/notmuch-private.h
index 57ec7f72..51016b0b 100644
--- a/lib/notmuch-private.h
+++ b/lib/notmuch-private.h
@@ -638,6 +638,11 @@ _notmuch_string_map_append (notmuch_string_map_t *map,
 			    const char *key,
 			    const char *value);
 
+void
+_notmuch_string_map_set (notmuch_string_map_t *map,
+			 const char *key,
+			 const char *value);
+
 const char *
 _notmuch_string_map_get (notmuch_string_map_t *map, const char *key);
 
diff --git a/lib/string-map.c b/lib/string-map.c
index a88404c7..1f3215fb 100644
--- a/lib/string-map.c
+++ b/lib/string-map.c
@@ -142,6 +142,21 @@ bsearch_first (notmuch_string_pair_t *array, size_t len, const char *key, bool e
 	return NULL;
 
 }
+void
+_notmuch_string_map_set (notmuch_string_map_t *map, const char *key, const char *val)
+{
+    notmuch_string_pair_t *pair;
+
+    /* this means that calling string_map_set invalidates iterators */
+    _notmuch_string_map_sort (map);
+    pair = bsearch_first (map->pairs, map->length, key, true);
+    if (! pair)
+       _notmuch_string_map_append (map, key, val);
+    else {
+       talloc_free (pair->value);
+       pair->value = talloc_strdup (map->pairs, val);
+    }
+}
 
 const char *
 _notmuch_string_map_get (notmuch_string_map_t *map, const char *key)
-- 
2.29.2