RETCODE SQL_API
SQLDescribeColW(HSTMT StatementHandle,
SQLUSMALLINT ColumnNumber, SQLWCHAR *ColumnName,
SQLSMALLINT BufferLength, SQLSMALLINT *NameLength,
SQLSMALLINT *DataType, SQLULEN *ColumnSize,
SQLSMALLINT *DecimalDigits, SQLSMALLINT *Nullable)
{
CSTR func = "SQLDescribeColW";
RETCODE ret;
StatementClass *stmt = (StatementClass *) StatementHandle;
SQLSMALLINT buflen, nmlen;
char *clName = NULL, *clNamet = NULL;
mylog("[%s]", func);
buflen = 0;
if (BufferLength > 0)
buflen = BufferLength * 3;
else if (NameLength)
buflen = 32;
if (buflen > 0)
clNamet = malloc(buflen);
ENTER_STMT_CS(stmt);
SC_clear_error(stmt);
StartRollbackState(stmt);
for (;; buflen = nmlen + 1, clNamet = realloc(clName, buflen))
{
if (!clNamet)
{
SC_set_error(stmt, STMT_NO_MEMORY_ERROR, "Could not allocate memory for column name", func);
ret = SQL_ERROR;
break;
}
clName = clNamet;
ret = PGAPI_DescribeCol(StatementHandle, ColumnNumber,
(SQLCHAR *) clName, buflen,
&nmlen, DataType, ColumnSize,
DecimalDigits, Nullable);
if (SQL_SUCCESS_WITH_INFO != ret || nmlen < buflen)
break;
}
if (SQL_SUCCEEDED(ret))
{
SQLLEN nmcount = nmlen;
if (nmlen < buflen)
nmcount = utf8_to_ucs2(clName, nmlen, ColumnName, BufferLength);
if (SQL_SUCCESS == ret && BufferLength > 0 && nmcount > BufferLength)
{
ret = SQL_SUCCESS_WITH_INFO;
SC_set_error(stmt, STMT_TRUNCATED, "Column name too large", func);
}
if (NameLength)
*NameLength = (SQLSMALLINT) nmcount;
}
ret = DiscardStatementSvp(stmt, ret, FALSE);
LEAVE_STMT_CS(stmt);
if (clName)
free(clName);
return ret;
}
RETCODE SQL_API
SQLDescribeCol(HSTMT StatementHandle,
SQLUSMALLINT ColumnNumber, SQLCHAR *ColumnName,
SQLSMALLINT BufferLength, SQLSMALLINT *NameLength,
SQLSMALLINT *DataType, SQLULEN *ColumnSize,
SQLSMALLINT *DecimalDigits, SQLSMALLINT *Nullable)
{
RETCODE ret;
StatementClass *stmt = (StatementClass *) StatementHandle;
mylog("[SQLDescribeCol]");
ENTER_STMT_CS(stmt);
SC_clear_error(stmt);
StartRollbackState(stmt);
ret = PGAPI_DescribeCol(StatementHandle, ColumnNumber,
ColumnName, BufferLength, NameLength,
DataType, ColumnSize, DecimalDigits, Nullable);
ret = DiscardStatementSvp(stmt, ret, FALSE);
LEAVE_STMT_CS(stmt);
return ret;
}
