Fix some typos

3 files changed, 8 insertions, 2 deletions

diff --git a/src/storage/ngram.h b/src/storage/ngram.h
index 57979b4..cb90cd0 100644
--- a/src/storage/ngram.h
+++ b/src/storage/ngram.h
@@ -34,6 +34,10 @@
 #include "ngram_kyotodb.h"
 #endif
 
+#ifdef HAVE_TKRZW
+#include "ngram_tkrzwdb.h"
+#endif
+
 namespace pinyin{
 
 class Bigram;
diff --git a/src/storage/ngram_kyotodb.cpp b/src/storage/ngram_kyotodb.cpp
index 560e196..e12d3b8 100644
--- a/src/storage/ngram_kyotodb.cpp
+++ b/src/storage/ngram_kyotodb.cpp
@@ -80,6 +80,8 @@ bool Bigram::load_db(const char * dbfile){
 }
 
 bool Bigram::save_db(const char * dbfile){
+    if (!m_db)
+        return false;
 
     int ret = unlink(dbfile);
     if ( ret != 0 && errno != ENOENT)
diff --git a/src/storage/ngram_kyotodb.h b/src/storage/ngram_kyotodb.h
index f1f28d8..7dfdbb8 100644
--- a/src/storage/ngram_kyotodb.h
+++ b/src/storage/ngram_kyotodb.h
@@ -82,11 +82,11 @@ public:
 
     /**
      * Bigram::attach:
-     * @dbfile: the Berkeley DB file name.
+     * @dbfile: the Kyoto Cabinet file name.
      * @flags: the flags of enum ATTACH_FLAG.
      * @returns: whether the attach operation is successful.
      *
-     * Attach this Bigram with the Berkeley DB.
+     * Attach this Bigram with the Kyoto Cabinet.
      *
      */
     bool attach(const char * dbfile, guint32 flags);