#include "EXTERN.h"
#include "perl.h"
#include "XSUB.h"
#include "IBM390lib.h"
/*---- Translation tables ----*/
static unsigned char a2e_table[256] = {
0x00, 0x01, 0x02, 0x03, 0x37, 0x2d, 0x2e, 0x2f, 0x16, 0x05,
0x15, 0x0b, 0x0c, 0x0d, 0x0e, 0x0f, 0x10, 0x11, 0x12, 0x13,
0x3c, 0x3d, 0x32, 0x26, 0x18, 0x19, 0x3f, 0x27, 0x1c, 0x1d,
0x1e, 0x1f, 0x40, 0x5a, 0x7f, 0x7b, 0x5b, 0x6c, 0x50, 0x7d,
0x4d, 0x5d, 0x5c, 0x4e, 0x6b, 0x60, 0x4b, 0x61, 0xf0, 0xf1,
0xf2, 0xf3, 0xf4, 0xf5, 0xf6, 0xf7, 0xf8, 0xf9, 0x7a, 0x5e,
0x4c, 0x7e, 0x6e, 0x6f, 0x7c, 0xc1, 0xc2, 0xc3, 0xc4, 0xc5,
0xc6, 0xc7, 0xc8, 0xc9, 0xd1, 0xd2, 0xd3, 0xd4, 0xd5, 0xd6,
0xd7, 0xd8, 0xd9, 0xe2, 0xe3, 0xe4, 0xe5, 0xe6, 0xe7, 0xe8,
0xe9, 0xad, 0xe0, 0xbd, 0x5f, 0x6d, 0x79, 0x81, 0x82, 0x83,
0x84, 0x85, 0x86, 0x87, 0x88, 0x89, 0x91, 0x92, 0x93, 0x94,
0x95, 0x96, 0x97, 0x98, 0x99, 0xa2, 0xa3, 0xa4, 0xa5, 0xa6,
0xa7, 0xa8, 0xa9, 0xc0, 0x4f, 0xd0, 0xa1, 0x07, 0x20, 0x21,
0x22, 0x23, 0x24, 0x25, 0x06, 0x17, 0x28, 0x29, 0x2a, 0x2b,
0x2c, 0x09, 0x0a, 0x1b, 0x30, 0x31, 0x1a, 0x33, 0x34, 0x35,
0x36, 0x08, 0x38, 0x39, 0x3a, 0x3b, 0x04, 0x14, 0x3e, 0xff,
0x41, 0xaa, 0x4a, 0xb1, 0x9f, 0xb2, 0x6a, 0xb5, 0xbb, 0xb4,
0x9a, 0x8a, 0xb0, 0xca, 0xaf, 0xbc, 0x90, 0x8f, 0xea, 0xfa,
0xbe, 0xa0, 0xb6, 0xb3, 0x9d, 0xda, 0x9b, 0x8b, 0xb7, 0xb8,
0xb9, 0xab, 0x64, 0x65, 0x62, 0x66, 0x63, 0x67, 0x9e, 0x68,
0x74, 0x71, 0x72, 0x73, 0x78, 0x75, 0x76, 0x77, 0xac, 0x69,
0xed, 0xee, 0xeb, 0xef, 0xec, 0xbf, 0x80, 0xfd, 0xfe, 0xfb,
0xfc, 0xba, 0xae, 0x59, 0x44, 0x45, 0x42, 0x46, 0x43, 0x47,
0x9c, 0x48, 0x54, 0x51, 0x52, 0x53, 0x58, 0x55, 0x56, 0x57,
0x8c, 0x49, 0xcd, 0xce, 0xcb, 0xcf, 0xcc, 0xe1, 0x70, 0xdd,
0xde, 0xdb, 0xdc, 0x8d, 0x8e, 0xdf };
static unsigned char e2a_table[256] = {
0x00, 0x01, 0x02, 0x03, 0x9c, 0x09, 0x86, 0x7f, 0x97, 0x8d,
0x8e, 0x0b, 0x0c, 0x0d, 0x0e, 0x0f, 0x10, 0x11, 0x12, 0x13,
0x9d, 0x0a, 0x08, 0x87, 0x18, 0x19, 0x92, 0x8f, 0x1c, 0x1d,
0x1e, 0x1f, 0x80, 0x81, 0x82, 0x83, 0x84, 0x85, 0x17, 0x1b,
0x88, 0x89, 0x8a, 0x8b, 0x8c, 0x05, 0x06, 0x07, 0x90, 0x91,
0x16, 0x93, 0x94, 0x95, 0x96, 0x04, 0x98, 0x99, 0x9a, 0x9b,
0x14, 0x15, 0x9e, 0x1a, 0x20, 0xa0, 0xe2, 0xe4, 0xe0, 0xe1,
0xe3, 0xe5, 0xe7, 0xf1, 0xa2, 0x2e, 0x3c, 0x28, 0x2b, 0x7c,
0x26, 0xe9, 0xea, 0xeb, 0xe8, 0xed, 0xee, 0xef, 0xec, 0xdf,
0x21, 0x24, 0x2a, 0x29, 0x3b, 0x5e, 0x2d, 0x2f, 0xc2, 0xc4,
0xc0, 0xc1, 0xc3, 0xc5, 0xc7, 0xd1, 0xa6, 0x2c, 0x25, 0x5f,
0x3e, 0x3f, 0xf8, 0xc9, 0xca, 0xcb, 0xc8, 0xcd, 0xce, 0xcf,
0xcc, 0x60, 0x3a, 0x23, 0x40, 0x27, 0x3d, 0x22, 0xd8, 0x61,
0x62, 0x63, 0x64, 0x65, 0x66, 0x67, 0x68, 0x69, 0xab, 0xbb,
0xf0, 0xfd, 0xfe, 0xb1, 0xb0, 0x6a, 0x6b, 0x6c, 0x6d, 0x6e,
0x6f, 0x70, 0x71, 0x72, 0xaa, 0xba, 0xe6, 0xb8, 0xc6, 0xa4,
0xb5, 0x7e, 0x73, 0x74, 0x75, 0x76, 0x77, 0x78, 0x79, 0x7a,
0xa1, 0xbf, 0xd0, 0x5b, 0xde, 0xae, 0xac, 0xa3, 0xa5, 0xb7,
0xa9, 0xa7, 0xb6, 0xbc, 0xbd, 0xbe, 0xdd, 0xa8, 0xaf, 0x5d,
0xb4, 0xd7, 0x7b, 0x41, 0x42, 0x43, 0x44, 0x45, 0x46, 0x47,
0x48, 0x49, 0xad, 0xf4, 0xf6, 0xf2, 0xf3, 0xf5, 0x7d, 0x4a,
0x4b, 0x4c, 0x4d, 0x4e, 0x4f, 0x50, 0x51, 0x52, 0xb9, 0xfb,
0xfc, 0xf9, 0xfa, 0xff, 0x5c, 0xf7, 0x53, 0x54, 0x55, 0x56,
0x57, 0x58, 0x59, 0x5a, 0xb2, 0xd4, 0xd6, 0xd2, 0xd3, 0xd5,
0x30, 0x31, 0x32, 0x33, 0x34, 0x35, 0x36, 0x37, 0x38, 0x39,
0xb3, 0xdb, 0xdc, 0xd9, 0xda, 0x9f };
static unsigned char e2ap_table[256] = {
" "
" .<(+|& !$*); -/ ,%_>? `:#@'=\""
" abcdefghi jklmnopqr ~stuvwxyz [ ] "
"{ABCDEFGHI }JKLMNOPQR \\ STUVWXYZ 0123456789 "};
/*---- End of tables ----*/
#ifdef OLD_INTERNAL
#define UNDEF_PTR &sv_undef
#else
#define UNDEF_PTR &PL_sv_undef
#endif
/* 36KB may seem small, but on MVS most records are 32KB or less. */
#define OUTSTRING_MEM 36864
/* Macro: catenate a string to the end of an existing string
* and move the pointer up. */
#define memcat(target,offset,source,len) \
memcpy((target+offset), source, len); \
offset += len;
#ifndef min
#define min(x,y) (((x) < (y)) ? (x) : (y))
#endif
static int
not_here(char *s)
{
croak("%s not implemented on this architecture", s);
return -1;
}
static double
constant(char *name, int len, int arg)
{
errno = EINVAL;
return 0;
}
MODULE = Convert::IBM390 PACKAGE = Convert::IBM390
void
asc2eb(instring_sv)
SV * instring_sv
PROTOTYPE: $
PREINIT:
STRLEN ilength;
char * instring;
char * outstring_wk;
/* To avoid allocating small amounts of storage: */
char shorty[1024];
PPCODE:
instring = SvPV(instring_sv, ilength);
#ifdef DEBUG390
fprintf(stderr, "*D* asc2eb: beginning; length %d\n", ilength);
#endif
if (ilength <= 1024) {
CF_fcs_xlate(shorty, instring, ilength, a2e_table);
PUSHs(sv_2mortal(newSVpvn(shorty, ilength)));
} else {
New(0, outstring_wk, ilength, char);
CF_fcs_xlate(outstring_wk, instring, ilength, a2e_table);
PUSHs(sv_2mortal(newSVpvn(outstring_wk, ilength)));
Safefree(outstring_wk);
}
#ifdef DEBUG390
fprintf(stderr, "*D* asc2eb: returning\n");
#endif
void
eb2asc(instring_sv)
SV * instring_sv
PROTOTYPE: $
PREINIT:
STRLEN ilength;
char * instring;
char * outstring_wk;
/* To avoid allocating small amounts of storage: */
char shorty[1024];
PPCODE:
instring = SvPV(instring_sv, ilength);
#ifdef DEBUG390
fprintf(stderr, "*D* eb2asc: beginning; length %d\n", ilength);
#endif
if (ilength <= 1024) {
CF_fcs_xlate(shorty, instring, ilength, e2a_table);
PUSHs(sv_2mortal(newSVpvn(shorty, ilength)));
} else {
New(0, outstring_wk, ilength, char);
CF_fcs_xlate(outstring_wk, instring, ilength, e2a_table);
PUSHs(sv_2mortal(newSVpvn(outstring_wk, ilength)));
Safefree(outstring_wk);
}
#ifdef DEBUG390
fprintf(stderr, "*D* eb2asc: returning\n");
#endif
void
eb2ascp(instring_sv)
SV * instring_sv
PROTOTYPE: $
PREINIT:
STRLEN ilength;
char * instring;
char * outstring_wk;
/* To avoid allocating small amounts of storage: */
char shorty[1024];
PPCODE:
instring = SvPV(instring_sv, ilength);
#ifdef DEBUG390
fprintf(stderr, "*D* eb2ascp: beginning; length %d\n", ilength);
#endif
if (ilength <= 1024) {
CF_fcs_xlate(shorty, instring, ilength, e2ap_table);
PUSHs(sv_2mortal(newSVpvn(shorty, ilength)));
} else {
New(0, outstring_wk, ilength, char);
CF_fcs_xlate(outstring_wk, instring, ilength, e2ap_table);
PUSHs(sv_2mortal(newSVpvn(outstring_wk, ilength)));
Safefree(outstring_wk);
}
#ifdef DEBUG390
fprintf(stderr, "*D* eb2ascp: returning\n");
#endif
# // Much of the following code is shamelessly stolen from Perl's
# // built-in pack and unpack functions (pp.c).
# // packeb -- Pack a list of values into an EBCDIC record
void
packeb(pat, ...)
char * pat
PREINIT:
char outstring[OUTSTRING_MEM];
SV * item;
STRLEN item_len;
int ii; /* ii = item index */
int oi; /* oi = outstring index */
char datumtype;
register char * patend;
register int len;
int j, ndec, num_ok;
static char null10[] = {0,0,0,0,0,0,0,0,0,0};
/* space10 = native spaces. espace10 = EBCDIC spaces. */
static char space10[] = " ";
static char espace10[] =
{ 0x40, 0x40, 0x40, 0x40, 0x40, 0x40, 0x40, 0x40, 0x40, 0x40 };
I32 along;
char *aptr;
double adouble;
/* The eb_work area is long, but what the heck? Memory is cheap. */
char eb_work[32800];
PPCODE:
#ifdef DEBUG390
fprintf(stderr, "*D* packeb: beginning\n");
#endif
ii = 1;
oi = 0;
patend = pat + strlen(pat);
while (pat < patend) {
/* Have we gone past the end of the list of values? If so, stop. */
if (ii >= items)
break;
if (oi >= OUTSTRING_MEM)
croak("Output structure too large in packeb");
datumtype = *pat++;
if (isSPACE(datumtype))
continue;
if (*pat == '*') {
len = strchr("pz", datumtype) ? 8 :
(strchr("@x", datumtype) ? 0 : items - ii + 1);
pat++;
} else if (isDIGIT(*pat)) {
len = *pat++ - '0';
while (isDIGIT(*pat))
len = (len * 10) + (*pat++ - '0');
/* Decimal places (this result will be ignored if the
datumtype is not packed or zoned). */
ndec = 0;
if (*pat == '.') {
pat++;
while (isDIGIT(*pat))
ndec = (ndec * 10) + (*pat++ - '0');
}
} else {
len = strchr("pz", datumtype) ? 8 : 1;
}
if (len > 32767) {
croak("Field length too large in packeb: %c%d",
datumtype, len);
}
#ifdef DEBUG390
fprintf(stderr, "*D* packeb: datumtype/len %c%d\n",
datumtype, len);
#endif
switch(datumtype) {
case '@':
if (len > OUTSTRING_MEM || len < 0)
croak("@ position outside string");
oi = len;
break;
case 'x':
while (len >= 10) {
memcat(outstring, oi, null10, 10);
len -= 10;
}
memcat(outstring, oi, null10, len);
break;
/* [Ee]: EBCDIC character string */
case 'E':
case 'e':
item = ST(ii);
ii++;
aptr = SvPV(item, item_len);
if (pat[-1] == '*') {
len = item_len;
if (len > sizeof(eb_work))
croak("String too long in packeb: %c*", datumtype);
}
CF_fcs_xlate(eb_work, aptr, min(len, item_len), a2e_table);
if (item_len > len) {
memcat(outstring, oi, eb_work, len);
} else {
memcat(outstring, oi, eb_work, item_len);
len -= item_len;
if (datumtype == 'E') {
while (len >= 10) {
memcat(outstring, oi, espace10, 10);
len -= 10;
}
memcat(outstring, oi, espace10, len);
}
else {
while (len >= 10) {
memcat(outstring, oi, null10, 10);
len -= 10;
}
memcat(outstring, oi, null10, len);
}
}
break;
/* [Cc]: characters without translation. If space padding
is requested, we pad with native spaces, not x'40'. */
case 'C':
case 'c':
item = ST(ii);
ii++;
aptr = SvPV(item, item_len);
if (pat[-1] == '*')
len = item_len;
if (item_len > len) {
memcat(outstring, oi, aptr, len);
} else {
memcat(outstring, oi, aptr, item_len);
len -= item_len;
if (datumtype == 'C') {
while (len >= 10) {
memcat(outstring, oi, space10, 10);
len -= 10;
}
memcat(outstring, oi, space10, len);
}
else {
while (len >= 10) {
memcat(outstring, oi, null10, 10);
len -= 10;
}
memcat(outstring, oi, null10, len);
}
}
break;
/* [pP]: S/390 packed decimal. In this case, the length
given in the template is the length of a single field,
not a number of repetitions. */
case 'p':
case 'P':
if (len > 16) {
croak("Field length too large in packeb: %c%d", datumtype, len);
}
item = ST(ii);
ii++;
adouble = SvNV(item);
num_ok = CF_num2packed(eb_work, adouble, len, ndec,
datumtype=='P');
if (! num_ok) {
croak("Number %g too long for packed decimal", adouble);
}
item = ST(ii);
memcat(outstring, oi, eb_work, len);
break;
/* i: S/390 fullword (signed). */
case 'i':
for (j = 0; j < len; j++) {
item = ST(ii);
ii++;
along = SvIV(item);
_to_S390fw(eb_work, along);
memcat(outstring, oi, eb_work, 4);
}
break;
/* [sS]: S/390 halfword (signed/unsigned). */
case 's':
case 'S':
for (j = 0; j < len; j++) {
item = ST(ii);
ii++;
along = SvIV(item);
if (datumtype == 's') {
_to_S390hw(eb_work, along);
memcat(outstring, oi, eb_work, 2);
} else {
_to_S390fw(eb_work, along);
memcat(outstring, oi, eb_work+2, 2);
}
}
break;
/* [zZ]: S/390 zoned decimal. In this case, the length given
in the template is the length of a single field, not a
number of repetitions. */
case 'z':
case 'Z':
if (len > 32) {
croak("Field length too large in packeb: z%d", len);
}
item = ST(ii);
ii++;
adouble = SvNV(item);
num_ok = CF_num2zoned(eb_work, adouble, len, ndec, datumtype=='Z');
if (! num_ok) {
croak("Number %g too long for zoned decimal", adouble);
}
memcat(outstring, oi, eb_work, len);
break;
case 'H':
case 'h':
{
char *hexstring;
I32 workbyte, xi; /* xi = index into hexstring */
unsigned char hexbyte, final_byte;
item = ST(ii);
ii++;
hexstring = SvPV(item, item_len);
if (pat[-1] == '*')
len = item_len;
if (len < 2)
len = 2;
if (len > item_len)
len = item_len;
workbyte = 0;
for (xi = 0; xi < len; xi++) {
hexbyte = (unsigned char) hexstring[xi];
if (isALPHA(hexbyte))
workbyte |= ((hexbyte & 15) + 9) & 15;
else
workbyte |= hexbyte & 15;
if (! (xi & 1))
workbyte <<= 4;
else {
final_byte = workbyte & 0xFF;
memcat(outstring, oi, &final_byte, 1);
workbyte = 0;
}
}
if (xi & 1) {
final_byte = workbyte & 0xFF;
memcat(outstring, oi, &final_byte, 1);
}
}
break;
default:
croak("Invalid type in packeb: '%c'", datumtype);
}
}
PUSHs(sv_2mortal(newSVpvn(outstring, oi)));
#ifdef DEBUG390
fprintf(stderr, "*D* packeb: returning\n");
#endif
# unpackeb -- Unpack an EBCDIC record into a list
# Note that the EBCDIC data may contain nulls and other unprintable
# stuff, so we need an SV*, not just a char*.
void
unpackeb(pat, ebrecord)
char * pat
SV * ebrecord
PROTOTYPE: $$
PREINIT:
SV *sv;
STRLEN rlen;
register char *s;
char *sbegin;
char *tail;
char *strend;
register char *patend;
char datumtype;
register I32 len, outlen;
register I32 bits = 0;
int i, j, ndec, fieldlen;
char hexdigit[16] = "0123456789abcdef";
/* Work fields */
I32 along;
unsigned long aulong;
/* Some day we may want to support S/390 floats.... */
/*float afloat;*/
double adouble;
/* The eb_work area is long, but what the heck? Memory is cheap. */
char eb_work[32800];
PPCODE:
#ifdef DEBUG390
fprintf(stderr, "*D* unpackeb: beginning\n");
#endif
s = sbegin = SvPV(ebrecord, rlen);
strend = s + rlen;
patend = pat + strlen(pat);
while (pat < patend) {
datumtype = *pat++;
if (isSPACE(datumtype))
continue;
ndec = 0;
if (pat >= patend) {
len = 1;
}
else if (*pat == '*') {
len = strend - s;
if (datumtype == 'i' || datumtype == 'I') len = len / 4;
if (datumtype == 's' || datumtype == 'S') len = len / 2;
pat++;
}
else if (isDIGIT(*pat)) {
len = *pat++ - '0';
while (isDIGIT(*pat))
len = (len * 10) + (*pat++ - '0');
/* Decimal places (this result will be ignored if the
datumtype is not packed or zoned). */
ndec = 0;
if (*pat == '.') {
pat++;
while (isDIGIT(*pat))
ndec = (ndec * 10) + (*pat++ - '0');
}
}
else {
len = 1;
}
if (len > 32767) {
croak("Field length too large in unpackeb: %c%d",
datumtype, len);
}
#ifdef DEBUG390
fprintf(stderr, "*D* unpackeb: datumtype/len %c%d\n",
datumtype, len);
#endif
switch(datumtype) {
/* @: absolute offset */
case '@':
if (len >= rlen || len < 0)
croak("Absolute offset is outside string: @%d", len);
s = sbegin + len;
break;
/* [eE]: EBCDIC character string. In this case, the length
given in the template is the length of a single field, not
a number of repetitions. */
case 'e':
case 'E':
if (len > strend - s)
len = strend - s;
CF_fcs_xlate(eb_work, s, len, e2a_table);
outlen = len;
if (len < 1)
eb_work[0] = 0x00; /* Force an empty string. */
if (datumtype == 'E') { /* Strip nulls and spaces */
tail = eb_work + len - 1;
while (tail >= eb_work && (*tail==' ' || *tail=='\0'))
tail--;
outlen = tail - eb_work + 1;
}
XPUSHs(sv_2mortal(newSVpvn(eb_work, outlen)));
s += len;
break;
/* p: S/390 packed decimal. In this case, the length given
in the template is the length of a single field, not a
number of repetitions. */
case 'p':
if (len > strend - s)
len = strend - s;
if (len > 16) {
croak("Field length too large in unpackeb: p%d", len);
}
adouble = CF_packed2num(s, len, ndec);
if ( adouble == INVALID_390NUM ) {
sv = UNDEF_PTR;
} else {
sv = newSVnv(adouble);
}
XPUSHs(sv_2mortal(sv));
s += len;
break;
/* z: S/390 zoned decimal. In this case, the length given
in the template is the length of a single field, not a
number of repetitions. */
case 'z':
if (len > strend - s)
len = strend - s;
if (len > 32) {
croak("Field length too large in unpackeb: z%d", len);
}
adouble = CF_zoned2num(s, len, ndec);
if ( adouble == INVALID_390NUM ) {
sv = UNDEF_PTR;
} else {
sv = newSVnv(adouble);
}
XPUSHs(sv_2mortal(sv));
s += len;
break;
/* [Cc]: characters without translation */
case 'C':
case 'c':
if (len > strend - s)
len = strend - s;
XPUSHs(sv_2mortal(newSVpvn(s, len)));
s += len;
break;
/* i: integer (System/390 fullword) */
case 'i':
if (len > (strend - s) / 4)
len = (strend - s) / 4;
for (i=0; i < len; i++) {
along = 0;
along = (signed char) *s; s++;
for (j=1; j < 4; j++) {
along <<= 8;
along += (unsigned char) *s; s++;
}
XPUSHs(sv_2mortal(newSViv(along)));
}
break;
/* s: short integer (System/390 halfword) */
case 's':
if (len > (strend - s) / 2)
len = (strend - s) / 2;
for (i=0; i < len; i++) {
along = _halfword(s);
XPUSHs(sv_2mortal(newSViv(along)));
s += 2;
}
break;
/* [hH]: unpack to printable hex digits. The length given
in the template is the length of a single field, not
a number of repetitions. */
case 'h':
case 'H':
if (len > (strend - s) * 2)
len = (strend - s) * 2;
if (len < 1)
eb_work[0] = 0x00; /* Force an empty string. */
i = 0;
along = len;
for (len = 0; len < along; len++) {
if (len & 1)
bits <<= 4;
else
bits = *s++;
eb_work[i++] = hexdigit[(bits >> 4) & 15];
}
eb_work[i] = '\0';
XPUSHs(sv_2mortal(newSVpvn(eb_work, len)));
break;
/* v: varchar EBCDIC character string; i.e., a string of
EBCDIC characters preceded by a halfword length field (as
in DB2/MVS, for instance). 'len' here is a repeat count,
but don't go beyond the end of the record. */
case 'v':
for (i=0; i < len; i++) {
if (s >= strend)
break;
fieldlen = _halfword(s);
s += 2;
if (fieldlen > strend - s)
fieldlen = strend - s;
if (fieldlen > 0) {
CF_fcs_xlate(eb_work, s, fieldlen, e2a_table);
sv = newSVpvn(eb_work, fieldlen);
} else if (fieldlen == 0) {
sv = newSVpvn("", 0);
} else {
sv = UNDEF_PTR;
}
XPUSHs(sv_2mortal(sv));
s += fieldlen;
}
break;
/* V: varchar string with a halfword length but a fixed field
size. 'len' here is the length of the field exclusive of the
leading halfword. */
case 'V':
if (len > strend - s)
len = strend - s;
fieldlen = _halfword(s);
s += 2;
if (fieldlen > strend - s)
fieldlen = strend - s;
if (fieldlen > 0) {
CF_fcs_xlate(eb_work, s, fieldlen, e2a_table);
sv = newSVpvn(eb_work, fieldlen);
} else if (fieldlen == 0) {
sv = newSVpvn("", 0);
} else {
sv = UNDEF_PTR;
}
XPUSHs(sv_2mortal(sv));
s += len;
break;
/* x: ignore these bytes (do not return an element) */
case 'x':
if (len > strend - s)
len = strend - s;
s += len;
break;
/* I: unsigned integer (fullword) */
/* On most systems, integer = long = 32 bits, signed.
Therefore, to be safe, we compute this as an unsigned long
and then cast it to a double. */
case 'I':
if (len > (strend - s) / 4)
len = (strend - s) / 4;
if (sizeof(unsigned long) < 4) {
warn("Unsigned integer results may be invalid");
}
for (i=0; i < len; i++) {
aulong = 0;
for (j=0; j < 4; j++) {
aulong <<= 8;
aulong += (unsigned char) *s; s++;
}
XPUSHs(sv_2mortal(newSVnv((double) aulong)));
}
break;
/* S: unsigned short integer (halfword) */
case 'S':
if (len > (strend - s) / 2)
len = (strend - s) / 2;
for (i=0; i < len; i++) {
along = 0;
along = ((unsigned char) *s) << 8; s++;
along += (unsigned char) *s; s++;
XPUSHs(sv_2mortal(newSViv(along)));
}
break;
default:
croak("Invalid type in unpackeb: '%c'", datumtype);
}
}
#ifdef DEBUG390
fprintf(stderr, "*D* unpackeb: returning\n");
#endif
void
_set_translation(a2e_sv, e2a_sv, e2ap_sv)
SV * a2e_sv
SV * e2a_sv
SV * e2ap_sv
PROTOTYPE: DISABLE
PREINIT:
STRLEN ilength;
char * a2e_string;
char * e2a_string;
char * e2ap_string;
CODE:
a2e_string = SvPVbyte(a2e_sv, ilength);
if (ilength != 256) {
croak("a2e table must be 256 bytes, not %d", ilength);
}
e2a_string = SvPVbyte(e2a_sv, ilength);
if (ilength != 256) {
croak("e2a table must be 256 bytes, not %d", ilength);
}
e2ap_string = SvPVbyte(e2ap_sv, ilength);
if (ilength != 256) {
croak("e2ap table must be 256 bytes, not %d", ilength);
}
memcpy(a2e_table, a2e_string, 256);
memcpy(e2a_table, e2a_string, 256);
memcpy(e2ap_table, e2ap_string, 256);