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diff --git a/ngx_postgres-1.0/src/ngx_postgres_util.h b/ngx_postgres-1.0/src/ngx_postgres_util.h
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+/*
+ * Copyright (c) 2010, FRiCKLE Piotr Sikora <info@frickle.com>
+ * Copyright (c) 2009-2010, Yichun Zhang <agentzh@gmail.com>
+ * Copyright (C) 2002-2010, Igor Sysoev
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY AUTHOR AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#ifndef _NGX_POSTGRES_UTIL_H_
+#define _NGX_POSTGRES_UTIL_H_
+
+#include <ngx_core.h>
+#include <ngx_http.h>
+
+
+extern ngx_module_t  ngx_http_rewrite_module;
+
+
+typedef struct {
+    ngx_array_t  *codes;        /* uintptr_t */
+
+    ngx_uint_t    stack_size;
+
+    ngx_flag_t    log;
+    ngx_flag_t    uninitialized_variable_warn;
+} ngx_postgres_rewrite_loc_conf_t;
+
+
+void       ngx_postgres_upstream_finalize_request(ngx_http_request_t *,
+               ngx_http_upstream_t *, ngx_int_t);
+void       ngx_postgres_upstream_next(ngx_http_request_t *,
+               ngx_http_upstream_t *, ngx_int_t);
+ngx_int_t  ngx_postgres_upstream_test_connect(ngx_connection_t *);
+
+ngx_int_t  ngx_postgres_rewrite_var(ngx_http_request_t *,
+               ngx_http_variable_value_t *, uintptr_t);
+char      *ngx_postgres_rewrite_value(ngx_conf_t *,
+               ngx_postgres_rewrite_loc_conf_t *, ngx_str_t *);
+
+#endif /* _NGX_POSTGRES_UTIL_H_ */