fis-gtm/sr_port/do_xform.h

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/****************************************************************
* *
* Copyright 2001, 2011 Fidelity Information Services, Inc *
* *
* This source code contains the intellectual property *
* of its copyright holder(s), and is made available *
* under a license. If you do not know the terms of *
* the license, please stop and do not read further. *
* *
****************************************************************/
#ifndef DO_XFORM_INCLUDED
#define DO_XFORM_INCLUDED
#define DO_XFORM_RETURN_IF_NULL_STRING(INPUT, OUTPUT, LENGTH) \
{ \
if (!INPUT->len) \
{ /* If input string is the null subscript, we want the output (of the collation transformation function) \
* to be a null subscript as well. This is because the null subscript has special meaning as far as \
* GT.M subscript collation is concerned. In case the collation routine decides to map it to a non-null \
* subscript the user might start seeing undesirable collation orders. To be safe and avoid such \
* issues, the null subscript is handled specially by mapping it to a null subscript internally by GT.M \
* (without passing this to the collation routine) and returning right away. \
*/ \
OUTPUT->len = 0; \
*LENGTH = 0; \
} \
}
void do_xform(collseq *csp, int fc_type, mstr *input, mstr *output, int *length);
/*
* fc_type would be either XFORM (0) or XBACK (1)
*/
#endif /* DO_XFORM_INCLUDED */