Add cql_to_ccl_buf

diff --git a/include/yaz/cql.h b/include/yaz/cql.h
index 817e04b..148a9e0 100644 (file)
--- a/include/yaz/cql.h
+++ b/include/yaz/cql.h
@@ -260,6 +260,15 @@ int cql_to_ccl(struct cql_node *cn,
 YAZ_EXPORT
 void cql_to_ccl_stdio(struct cql_node *cn, FILE *f);
 
+/** \brief converts CQL tree to CCL and writes result to buffer
+    \param cn CQL node (tree)
+    \param out buffer
+    \param max size of buffer (max chars to write)
+    \returns length of resulting buffer
+ */
+YAZ_EXPORT
+int cql_to_ccl_buf(struct cql_node *cn, char *out, int max);
+
 /** \brief stream handle for file (used by cql_to_xml_stdio) */
 YAZ_EXPORT
 void cql_fputs(const char *buf, void *client_data);

diff --git a/src/cql2ccl.c b/src/cql2ccl.c
index 5f2011b..90ee5d6 100644 (file)
--- a/src/cql2ccl.c
+++ b/src/cql2ccl.c
@@ -168,7 +168,17 @@ void cql_to_ccl_stdio(struct cql_node *cn, FILE *f)
     cql_to_ccl(cn, cql_fputs, f);
 }
 
-
+int cql_to_ccl_buf(struct cql_node *cn, char *out, int max)
+{
+    struct cql_buf_write_info info;
+    info.off = 0;
+    info.max = max;
+    info.buf = out;
+    cql_to_ccl(cn, cql_buf_write_handler, &info);
+    if (info.off >= 0)
+        info.buf[info.off] = '\0';
+    return info.off;
+}
 
 /*
  * Local variables: