first commit for openGauss connect odbc code

convert.h

@@ -0,0 +1,55 @@
+/* File:			convert.h
+ *
+ * Description:		See "convert.c"
+ *
+ * Comments:		See "readme.txt" for copyright and license information.
+ *
+ */
+
+#ifndef __CONVERT_H__
+#define __CONVERT_H__
+
+#include "psqlodbc.h"
+
+#ifdef	__cplusplus
+extern "C" {
+#endif
+/* copy_and_convert results */
+#define COPY_OK							0
+#define COPY_UNSUPPORTED_TYPE					1
+#define COPY_UNSUPPORTED_CONVERSION				2
+#define COPY_RESULT_TRUNCATED					3
+#define COPY_GENERAL_ERROR						4
+#define COPY_NO_DATA_FOUND						5
+#define COPY_INVALID_STRING_CONVERSION				6
+
+int	copy_and_convert_field_bindinfo(StatementClass *stmt, OID field_type, int atttypmod, void *value, int col);
+int	copy_and_convert_field(StatementClass *stmt,
+			OID field_type, int atttypmod,
+			void *value,
+			SQLSMALLINT fCType, int precision,
+			PTR rgbValue, SQLLEN cbValueMax, SQLLEN *pcbValue, SQLLEN *pIndicator);
+
+int		copy_statement_with_parameters(StatementClass *stmt, BOOL);
+SQLLEN		pg_hex2bin(const char *in, char *out, SQLLEN len);
+size_t		findTag(const char *str, int ccsc);
+
+BOOL build_libpq_bind_params(StatementClass *stmt,
+						int *nParams, OID **paramTypes,
+						char ***paramValues,
+						int **paramLengths,
+						int **paramFormats,
+						int *resultFormat);
+BOOL build_libpq_bind_params_batch(StatementClass *stmt,
+						int *nParams, 
+						int *nBatchCount,
+						OID **paramTypes,
+						char ***paramValues,
+						int **paramLengths,
+						int **paramFormats,
+						int *resultFormat);
+
+#ifdef	__cplusplus
+}
+#endif
+#endif