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fis-gtm/sr_unix_cm/rc_mval2subsc.c

300 lines
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C
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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. *
* *
****************************************************************/
#include "mdef.h"
#include "arit.h"
#include "gdsroot.h"
#include "gtm_facility.h"
#include "fileinfo.h"
#include "gdsbt.h"
#include "collseq.h"
#include "gdsfhead.h"
#include "rc_iscan.h"
#include "do_xform.h"
#include "format_targ_key.h"
GBLREF gv_namehead *gv_target;
GBLREF gd_region *gv_cur_region;
error_def(ERR_GVSUBOFLOW);
error_def(ERR_NUMOFLOW);
error_def(ERR_GVIS);
static readonly unsigned char pos_code[100] =
{
0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 0x08, 0x09, 0x0a,
0x11, 0x12, 0x13, 0x14, 0x15, 0x16, 0x17, 0x18, 0x19, 0x1a,
0x21, 0x22, 0x23, 0x24, 0x25, 0x26, 0x27, 0x28, 0x29, 0x2a,
0x31, 0x32, 0x33, 0x34, 0x35, 0x36, 0x37, 0x38, 0x39, 0x3a,
0x41, 0x42, 0x43, 0x44, 0x45, 0x46, 0x47, 0x48, 0x49, 0x4a,
0x51, 0x52, 0x53, 0x54, 0x55, 0x56, 0x57, 0x58, 0x59, 0x5a,
0x61, 0x62, 0x63, 0x64, 0x65, 0x66, 0x67, 0x68, 0x69, 0x6a,
0x71, 0x72, 0x73, 0x74, 0x75, 0x76, 0x77, 0x78, 0x79, 0x7a,
0x81, 0x82, 0x83, 0x84, 0x85, 0x86, 0x87, 0x88, 0x89, 0x8a,
0x91, 0x92, 0x93, 0x94, 0x95, 0x96, 0x97, 0x98, 0x99, 0x9a
};
static readonly unsigned char neg_code[100] =
{
0xfe, 0xfd, 0xfc, 0xfb, 0xfa, 0xf9, 0xf8, 0xf7, 0xf6, 0xf5,
0xee, 0xed, 0xec, 0xeb, 0xea, 0xe9, 0xe8, 0xe7, 0xe6, 0xe5,
0xde, 0xdd, 0xdc, 0xdb, 0xda, 0xd9, 0xd8, 0xd7, 0xd6, 0xd5,
0xce, 0xcd, 0xcc, 0xcb, 0xca, 0xc9, 0xc8, 0xc7, 0xc6, 0xc5,
0xbe, 0xbd, 0xbc, 0xbb, 0xba, 0xb9, 0xb8, 0xb7, 0xb6, 0xb5,
0xae, 0xad, 0xac, 0xab, 0xaa, 0xa9, 0xa8, 0xa7, 0xa6, 0xa5,
0x9e, 0x9d, 0x9c, 0x9b, 0x9a, 0x99, 0x98, 0x97, 0x96, 0x95,
0x8e, 0x8d, 0x8c, 0x8b, 0x8a, 0x89, 0x88, 0x87, 0x86, 0x85,
0x7e, 0x7d, 0x7c, 0x7b, 0x7a, 0x79, 0x78, 0x77, 0x76, 0x75,
0x6e, 0x6d, 0x6c, 0x6b, 0x6a, 0x69, 0x68, 0x67, 0x66, 0x65
};
unsigned char *mval2subsc(mval *v, gv_key *g)
{
char buf1[MAX_KEY_SZ + 1];
mstr mstr_buf1;
mstr mstr_ch;
int exp_val;
bool is_negative;
unsigned char buff[MAX_ZWR_KEY_SZ], *end;
int4 n, m, mx, digs;
unsigned char *cvt_table;
uint4 mvt; /* Local copy of mvtype, bit ands use a int4, so do conversion once */
unsigned char *out_ptr;
unsigned char *in_ptr, ch;
unsigned char temp_mantissa[NUM_DEC_DG_2L / 2 + 3]; /* Need 1 byte for each two digits. Add 3 bytes slop */
unsigned char *tm;
DCL_THREADGBL_ACCESS;
SETUP_THREADGBL_ACCESS;
out_ptr = g->base + g->end;
MV_FORCE_STR(v);
if (TREF(transform) && gv_target->nct)
mvt = v->mvtype | MV_NUM_APPROX;
else
{
mvt = (uint4)v->mvtype;
/* this code differs from mval2subsc in port
* due to possilbe precision differences in the client representations
*/
if (rc_iscan(v))
{
/* Yes, convert it to numeric */
s2n(v);
mvt = v->mvtype;
if (!(mvt & MV_NM))
rts_error(VARLSTCNT(1) ERR_NUMOFLOW);
}
else
{
/* No, not numeric. Note the fact for future reference */
mvt = v->mvtype |= MV_NUM_APPROX;
}
}
if (mvt & MV_NUM_APPROX)
{ /* It's a string */
in_ptr = (unsigned char *) v->str.addr;
n = v->str.len;
if (TREF(transform) && gv_target->collseq)
{
mstr_ch.len = n;
mstr_ch.addr = (char*) in_ptr;
mstr_buf1.len = SIZEOF(buf1);
mstr_buf1.addr = buf1;
do_xform(gv_target->collseq, XFORM, &mstr_ch, &mstr_buf1, (int *)&n);
in_ptr = (unsigned char *)mstr_buf1.addr; /* mstr_buf1.addr is used just in case it is
reallocated by the XFORM routine */
}
if ((g->end + n + 3) > (g->top - MAX_NUM_SUBSC_LEN))
{
if (0 == (end = format_targ_key(buff, MAX_ZWR_KEY_SZ, g, TRUE)))
end = &buff[MAX_ZWR_KEY_SZ - 1];
rts_error(VARLSTCNT(6) ERR_GVSUBOFLOW, 0, ERR_GVIS, 2, end - buff, buff);
}
if (n > 0)
{
*out_ptr++ = STR_SUB_PREFIX;
do
{
ch = *in_ptr++;
if (ch <= 1)
{
*out_ptr++ = STR_SUB_ESCAPE;
if ( out_ptr - g->base + n + 3 > g->top - MAX_NUM_SUBSC_LEN)
{
if ((end = format_targ_key(buff, MAX_ZWR_KEY_SZ, g, TRUE)) == 0)
{
end = &buff[MAX_ZWR_KEY_SZ - 1];
}
rts_error(VARLSTCNT(6) ERR_GVSUBOFLOW, 0, ERR_GVIS, 2, end - buff, buff);
}
ch++; /* promote character */
}
*out_ptr++ = ch;
} while (--n > 0);
} else
{
*out_ptr++ = (!TREF(transform) || 0 == gv_cur_region->std_null_coll)
? STR_SUB_PREFIX : SUBSCRIPT_STDCOL_NULL;
}
goto FINI;
}
/* Its a number, is it an integer? */
if ( mvt & MV_INT )
{ /* Yes, its an integer, convert it */
is_negative = FALSE;
cvt_table = pos_code;
if ((m = v->m[1]) < 0)
{
is_negative = TRUE;
cvt_table = neg_code;
m = -m;
} else if (0 == m)
{
*out_ptr++ = 0x80;
goto FINI;
}
if (10 > m)
{
*out_ptr++ = is_negative ? ~(SUBSCRIPT_BIAS - 2): (SUBSCRIPT_BIAS - 2);
*out_ptr++ = cvt_table[m * 10];
goto FINISH_NUMBER;
}
if (100 > m)
{
*out_ptr++ = is_negative ? ~(SUBSCRIPT_BIAS - 1): (SUBSCRIPT_BIAS - 1);
*out_ptr++ = cvt_table[m];
goto FINISH_NUMBER;
}
tm = temp_mantissa;
if (1000 > m)
{
exp_val = SUBSCRIPT_BIAS;
goto ODD_INTEGER;
}
if (10000 > m)
{
exp_val = SUBSCRIPT_BIAS + 1;
goto EVEN_INTEGER;
}
if (100000 > m)
{
exp_val = SUBSCRIPT_BIAS + 2;
goto ODD_INTEGER;
}
if (1000000 > m)
{
exp_val = SUBSCRIPT_BIAS + 3;
goto EVEN_INTEGER;
}
if (10000000 > m)
{
exp_val = SUBSCRIPT_BIAS + 4;
goto ODD_INTEGER;
}
if (100000000 > m)
{
exp_val = SUBSCRIPT_BIAS + 5;
goto EVEN_INTEGER;
}
exp_val = SUBSCRIPT_BIAS + 6;
ODD_INTEGER:
*out_ptr++ = is_negative ? ~exp_val : exp_val;
n = mx = m / 10;
n *= 10;
n = m - n;
m = mx;
if (n)
{
*tm++ = cvt_table[n * 10];
goto FINISH_INTEGERS;
}
goto KEEP_STRIPING;
EVEN_INTEGER:
*out_ptr++ = is_negative ? ~exp_val: exp_val;
KEEP_STRIPING:
while (m)
{
n = mx = m / 100;
n *= 100;
n = m - n;
m = mx;
if (n)
{
*tm++ = cvt_table[n];
break;
}
}
FINISH_INTEGERS:
while (m)
{
n = mx = m / 100;
n *= 100;
n = m - n;
*tm++ = cvt_table[n];
m = mx;
}
while (tm > temp_mantissa)
*out_ptr++ = *--tm;
goto FINISH_NUMBER;
}
/* Convert 18 digit number */
cvt_table = pos_code;
if ((is_negative = v->sgn) != 0)
cvt_table = neg_code;
*out_ptr++ = is_negative ? ~(v->e - MV_XBIAS + SUBSCRIPT_BIAS): (v->e - MV_XBIAS + SUBSCRIPT_BIAS);
m = v->m[1];
n = v->m[0];
/* Strip top two digits */
mx = m / (MANT_HI / 100);
*out_ptr++ = cvt_table[mx];
m = (m - (mx * (MANT_HI / 100))) * 100;
/* The two msd's have now been converted. The maximum number of
* data remaining is 7 digits in "m" and 9 digits in "n".
* If n is zero, then we should just grind out m till we are done
*/
if (n == 0)
goto LAST_LONGWORD;
/* there are more than 7 digits left. First, we will put 8 digits in m, (leaving 8 digits in n) */
mx = n / (MANT_HI / 10);
m += mx * 10;
n = (n - (mx * (MANT_HI / 10))) * 10;
if (n == 0)
goto LAST_LONGWORD;
for (digs = 0 ; digs < 4 ; digs++)
{
mx = m / (MANT_HI / 100);
*out_ptr++ = cvt_table[mx];
m = (m - (mx * (MANT_HI / 100))) * 100;
}
m = n;
LAST_LONGWORD:
while (m)
{
mx = m / (MANT_HI / 100);
*out_ptr++ = cvt_table[mx];
m = (m - (mx * (MANT_HI / 100))) * 100;
}
FINISH_NUMBER:
if (is_negative)
*out_ptr++ = 0xff;
FINI:
*out_ptr++ = 0 ; *out_ptr = 0 ;
g->prev = g->end ;
g->end = out_ptr - g->base ;
if (g->end > g->top - MAX_NUM_SUBSC_LEN - 1)
{ /* take of extra space and one for last zero */
if ((end = format_targ_key(buff, MAX_ZWR_KEY_SZ, g, TRUE)) == 0)
end = &buff[MAX_ZWR_KEY_SZ - 1];
rts_error(VARLSTCNT(6) ERR_GVSUBOFLOW, 0, ERR_GVIS, 2, end - buff, buff);
}
return out_ptr;
}
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