static VarChar *
nvarchar2_input(const char *s, size_t len, int32 atttypmod)
{
VarChar *result; /* input data */
size_t maxlen;
maxlen = atttypmod - VARHDRSZ;
/*
* Perform the typmod check; error out if value too long for NVARCHAR2
*/
if (atttypmod >= (int32) VARHDRSZ && len > maxlen)
{
/* Verify that input length is within typmod limit.
*
* NOTE: blankspace is not truncated
*/
size_t mbmaxlen = pg_mbstrlen(s);
if (mbmaxlen > maxlen)
ereport(ERROR,
(errcode(ERRCODE_INVALID_PARAMETER_VALUE),
errmsg("input value length is %zd; too long for type nvarchar2(%zd)", mbmaxlen , maxlen)));
}
result = (VarChar *) cstring_to_text_with_len(s, len);
return result;
}
static const char *
eudc_fallback_character_assign_hook(
const char *newval, bool doit, GucSource source)
{
int len = pg_mbstrlen(newval);
if (len >= 2 || len < 0)
ereport(ERROR,
(errcode(ERRCODE_INVALID_PARAMETER_VALUE),
errmsg("invalid value for parameter \"eudc.fallback_character\": \"%s\"", newval),
errhint("must be one character or empty string")));
return newval;
}
static bool eudc_fallback_character_check_hook(
const char **newval, void** extra, GucSource source)
{
int len;
GUC_check_errhint("must be one character or empty string");
/* handle explicit setting of eudc.fallback_character */
if (*newval)
{
/* eudc.fallback_character
* should be 0 or 1 character
*/
len = pg_mbstrlen(*newval);
if (len >= 2 || len < 0)
return false;
}
return true;
}
