/
pack.c
2312 lines (2110 loc) · 58.6 KB
/
pack.c
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/*
* This file is covered by the Ruby license. See COPYING for more details.
*
* Copyright (C) 2007-2011, Apple Inc. All rights reserved.
* Copyright (C) 1993-2007 Yukihiro Matsumoto
*/
#include <sys/types.h>
#include <ctype.h>
#include <errno.h>
#include "macruby_internal.h"
#include "ruby/node.h"
#include "vm.h"
#include "encoding.h"
#define SIZE16 2
#define SIZE32 4
#ifndef SIZEOF_INT16_T
#define SIZEOF_INT16_T 2
#endif
#ifndef SIZEOF_INT32_T
#define SIZEOF_INT32_T 4
#endif
#ifndef SIZEOF_INT64_T
#define SIZEOF_INT64_T 8
#endif
#if SIZEOF_SHORT != 2 || SIZEOF_LONG != 4
# define NATINT_PACK
#endif
#ifdef DYNAMIC_ENDIAN
/* for universal binary of NEXTSTEP and MacOS X */
/* useless since autoconf 2.63? */
static int
is_bigendian(void)
{
static int init = 0;
static int endian_value;
char *p;
if (init) return endian_value;
init = 1;
p = (char*)&init;
return endian_value = p[0]?0:1;
}
# define BIGENDIAN_P() (is_bigendian())
#elif defined(WORDS_BIGENDIAN)
# define BIGENDIAN_P() 1
#else
# define BIGENDIAN_P() 0
#endif
#ifdef NATINT_PACK
# define NATINT_LEN(type,len) (natint?(int)sizeof(type):(int)(len))
#else
# define NATINT_LEN(type,len) ((int)sizeof(type))
#endif
#if SIZEOF_LONG == 8
# define INT64toNUM(x) LONG2NUM(x)
# define UINT64toNUM(x) ULONG2NUM(x)
#elif defined(HAVE_LONG_LONG) && SIZEOF_LONG_LONG == 8
# define INT64toNUM(x) LL2NUM(x)
# define UINT64toNUM(x) ULL2NUM(x)
#endif
#define define_swapx(x, xtype) \
static xtype \
TOKEN_PASTE(swap,x)(xtype z) \
{ \
xtype r; \
xtype *zp; \
unsigned char *s, *t; \
int i; \
\
zp = malloc(sizeof(xtype)); \
assert(zp != NULL); \
*zp = z; \
s = (unsigned char*)zp; \
t = malloc(sizeof(xtype)); \
assert(t != NULL); \
for (i=0; i<sizeof(xtype); i++) { \
t[sizeof(xtype)-i-1] = s[i]; \
} \
r = *(xtype *)t; \
free(t); \
free(zp); \
return r; \
}
#ifndef swap16
# define swap16(x) ((((x)&0xFF)<<8) | (((x)>>8)&0xFF))
#endif
#ifndef swap32
# define swap32(x) ((((x)&0xFF)<<24) \
|(((x)>>24)&0xFF) \
|(((x)&0x0000FF00)<<8) \
|(((x)&0x00FF0000)>>8) )
#endif
#ifndef swap64
# ifdef HAVE_INT64_T
# define byte_in_64bit(n) ((uint64_t)0xff << (n))
# define swap64(x) ((((x)&byte_in_64bit(0))<<56) \
|(((x)>>56)&0xFF) \
|(((x)&byte_in_64bit(8))<<40) \
|(((x)&byte_in_64bit(48))>>40) \
|(((x)&byte_in_64bit(16))<<24) \
|(((x)&byte_in_64bit(40))>>24) \
|(((x)&byte_in_64bit(24))<<8) \
|(((x)&byte_in_64bit(32))>>8))
# endif
#endif
#if SIZEOF_SHORT == 2
# define swaps(x) swap16(x)
#elif SIZEOF_SHORT == 4
# define swaps(x) swap32(x)
#else
define_swapx(s,short)
#endif
#if SIZEOF_INT == 2
# define swapi(x) swap16(x)
#elif SIZEOF_INT == 4
# define swapi(x) swap32(x)
#else
define_swapx(i,int)
#endif
#if SIZEOF_LONG == 4
# define swapl(x) swap32(x)
#elif SIZEOF_LONG == 8
# define swapl(x) swap64(x)
#else
define_swapx(l,long)
#endif
#ifdef HAVE_LONG_LONG
# if SIZEOF_LONG_LONG == 8
# define swapll(x) swap64(x)
# else
define_swapx(ll,LONG_LONG)
# endif
#endif
#if SIZEOF_FLOAT == 4
# ifdef HAVE_UINT32_T
# define swapf(x) swap32(x)
# define FLOAT_SWAPPER uint32_t
# else /* SIZEOF_FLOAT == 4 but undivide by known size of int */
define_swapx(f,float)
# endif
#else /* SIZEOF_FLOAT != 4 */
define_swapx(f,float)
#endif /* #if SIZEOF_FLOAT == 4 */
#if SIZEOF_DOUBLE == 8
# ifdef HAVE_UINT64_T /* SIZEOF_DOUBLE == 8 == SIZEOF_UINT64_T */
# define swapd(x) swap64(x)
# define DOUBLE_SWAPPER uint64_t
# else
# if SIZEOF_LONG == 4 /* SIZEOF_DOUBLE == 8 && 4 == SIZEOF_LONG */
static double
swapd(const double d)
{
double dtmp = d;
unsigned long utmp[2];
unsigned long utmp0;
utmp[0] = 0; utmp[1] = 0;
memcpy(utmp,&dtmp,sizeof(double));
utmp0 = utmp[0];
utmp[0] = swapl(utmp[1]);
utmp[1] = swapl(utmp0);
memcpy(&dtmp,utmp,sizeof(double));
return dtmp;
}
# elif SIZEOF_SHORT == 4 /* SIZEOF_DOUBLE == 8 && 4 == SIZEOF_SHORT */
static double
swapd(const double d)
{
double dtmp = d;
unsigned short utmp[2];
unsigned short utmp0;
utmp[0] = 0; utmp[1] = 0;
memcpy(utmp,&dtmp,sizeof(double));
utmp0 = utmp[0];
utmp[0] = swaps(utmp[1]);
utmp[1] = swaps(utmp0);
memcpy(&dtmp,utmp,sizeof(double));
return dtmp;
}
# else /* SIZEOF_DOUBLE == 8 but undivide by known size of int */
define_swapx(d, double)
# endif
# endif /* #if SIZEOF_LONG == 8 */
#else /* SIZEOF_DOUBLE != 8 */
define_swapx(d, double)
#endif /* #if SIZEOF_DOUBLE == 8 */
#undef define_swapx
#define rb_ntohf(x) (BIGENDIAN_P()?(x):swapf(x))
#define rb_ntohd(x) (BIGENDIAN_P()?(x):swapd(x))
#define rb_htonf(x) (BIGENDIAN_P()?(x):swapf(x))
#define rb_htond(x) (BIGENDIAN_P()?(x):swapd(x))
#define rb_htovf(x) (BIGENDIAN_P()?swapf(x):(x))
#define rb_htovd(x) (BIGENDIAN_P()?swapd(x):(x))
#define rb_vtohf(x) (BIGENDIAN_P()?swapf(x):(x))
#define rb_vtohd(x) (BIGENDIAN_P()?swapd(x):(x))
#ifdef FLOAT_SWAPPER
# define FLOAT_CONVWITH(y) FLOAT_SWAPPER y;
# define HTONF(x,y) (memcpy(&y,&x,sizeof(float)), \
y = rb_htonf((FLOAT_SWAPPER)y), \
memcpy(&x,&y,sizeof(float)), \
x)
# define HTOVF(x,y) (memcpy(&y,&x,sizeof(float)), \
y = rb_htovf((FLOAT_SWAPPER)y), \
memcpy(&x,&y,sizeof(float)), \
x)
# define NTOHF(x,y) (memcpy(&y,&x,sizeof(float)), \
y = rb_ntohf((FLOAT_SWAPPER)y), \
memcpy(&x,&y,sizeof(float)), \
x)
# define VTOHF(x,y) (memcpy(&y,&x,sizeof(float)), \
y = rb_vtohf((FLOAT_SWAPPER)y), \
memcpy(&x,&y,sizeof(float)), \
x)
#else
# define FLOAT_CONVWITH(y)
# define HTONF(x,y) rb_htonf(x)
# define HTOVF(x,y) rb_htovf(x)
# define NTOHF(x,y) rb_ntohf(x)
# define VTOHF(x,y) rb_vtohf(x)
#endif
#ifdef DOUBLE_SWAPPER
# define DOUBLE_CONVWITH(y) DOUBLE_SWAPPER y;
# define HTOND(x,y) (memcpy(&y,&x,sizeof(double)), \
y = rb_htond((DOUBLE_SWAPPER)y), \
memcpy(&x,&y,sizeof(double)), \
x)
# define HTOVD(x,y) (memcpy(&y,&x,sizeof(double)), \
y = rb_htovd((DOUBLE_SWAPPER)y), \
memcpy(&x,&y,sizeof(double)), \
x)
# define NTOHD(x,y) (memcpy(&y,&x,sizeof(double)), \
y = rb_ntohd((DOUBLE_SWAPPER)y), \
memcpy(&x,&y,sizeof(double)), \
x)
# define VTOHD(x,y) (memcpy(&y,&x,sizeof(double)), \
y = rb_vtohd((DOUBLE_SWAPPER)y), \
memcpy(&x,&y,sizeof(double)), \
x)
#else
# define DOUBLE_CONVWITH(y)
# define HTOND(x,y) rb_htond(x)
# define HTOVD(x,y) rb_htovd(x)
# define NTOHD(x,y) rb_ntohd(x)
# define VTOHD(x,y) rb_vtohd(x)
#endif
VALUE rb_big2ulong_pack(VALUE x);
static unsigned long
num2i32(VALUE x)
{
x = rb_to_int(x); /* is nil OK? (should not) */
if (FIXNUM_P(x)) return FIX2LONG(x);
if (TYPE(x) == T_BIGNUM) {
return rb_big2ulong_pack(x);
}
rb_raise(rb_eTypeError, "can't convert %s to `integer'", rb_obj_classname(x));
return 0; /* not reached */
}
#define QUAD_SIZE 8
#define MAX_INTEGER_PACK_SIZE 8
/* #define FORCE_BIG_PACK */
static const char toofew[] = "too few arguments";
static void encodes(VALUE,const char*,long,int,int);
static void qpencode(VALUE,VALUE,long);
static unsigned long utf8_to_uv(const char*,long*);
/*
* call-seq:
* arr.pack ( aTemplateString ) -> aBinaryString
*
* Packs the contents of <i>arr</i> into a binary sequence according to
* the directives in <i>aTemplateString</i> (see the table below)
* Directives ``A,'' ``a,'' and ``Z'' may be followed by a count,
* which gives the width of the resulting field. The remaining
* directives also may take a count, indicating the number of array
* elements to convert. If the count is an asterisk
* (``<code>*</code>''), all remaining array elements will be
* converted. Any of the directives ``<code>sSiIlL</code>'' may be
* followed by an underscore (``<code>_</code>'') or
* exclamation mark (``<code>!</code>'') to use the underlying
* platform's native size for the specified type; otherwise, they use a
* platform-independent size. Spaces are ignored in the template
* string. See also <code>String#unpack</code>.
*
* a = [ "a", "b", "c" ]
* n = [ 65, 66, 67 ]
* a.pack("A3A3A3") #=> "a b c "
* a.pack("a3a3a3") #=> "a\000\000b\000\000c\000\000"
* n.pack("ccc") #=> "ABC"
*
* Directives for +pack+.
*
* Integer | Array |
* Directive | Element | Meaning
* ---------------------------------------------------------------------------
* C | Integer | 8-bit unsigned integer (unsigned char)
* S | Integer | 16-bit unsigned integer, native endian (uint16_t)
* L | Integer | 32-bit unsigned integer, native endian (uint32_t)
* Q | Integer | 64-bit unsigned integer, native endian (uint64_t)
* | |
* c | Integer | 8-bit signed integer (char)
* s | Integer | 16-bit signed integer, native endian (int16_t)
* l | Integer | 32-bit signed integer, native endian (int32_t)
* q | Integer | 64-bit signed integer, native endian (int64_t)
* | |
* S_, S! | Integer | unsigned short, native endian
* I, I_, I! | Integer | unsigned int, native endian
* L_, L! | Integer | unsigned long, native endian
* | |
* s_, s! | Integer | signed short, native endian
* i, i_, i! | Integer | signed int, native endian
* l_, l! | Integer | signed long, native endian
* | |
* n | Integer | 16-bit unsigned integer, network (big-endian) byte order
* N | Integer | 32-bit unsigned integer, network (big-endian) byte order
* v | Integer | 16-bit unsigned integer, VAX (little-endian) byte order
* V | Integer | 32-bit unsigned integer, VAX (little-endian) byte order
* | |
* U | Integer | UTF-8 character
* w | Integer | BER-compressed integer
*
* Float | |
* Directive | | Meaning
* ---------------------------------------------------------------------------
* D, d | Float | double-precision float, native format
* F, f | Float | single-precision float, native format
* E | Float | double-precision float, little-endian byte order
* e | Float | single-precision float, little-endian byte order
* G | Float | double-precision float, network (big-endian) byte order
* g | Float | single-precision float, network (big-endian) byte order
*
* String | |
* Directive | | Meaning
* ---------------------------------------------------------------------------
* A | String | arbitrary binary string (space padded, count is width)
* a | String | arbitrary binary string (null padded, count is width)
* Z | String | same as ``a'', except that null is added with *
* B | String | bit string (MSB first)
* b | String | bit string (LSB first)
* H | String | hex string (high nibble first)
* h | String | hex string (low nibble first)
* u | String | UU-encoded string
* M | String | quoted printable, MIME encoding (see RFC2045)
* m | String | base64 encoded string (see RFC 2045, count is width)
* | | (if count is 0, no line feed are added, see RFC 4648)
* P | String | pointer to a structure (fixed-length string)
* p | String | pointer to a null-terminated string
*
* Misc. | |
* Directive | | Meaning
* ---------------------------------------------------------------------------
* @ | --- | moves to absolute position
* X | --- | back up a byte
* x | --- | null byte
*/
#define PRE_ALLOCATE(bstr, len) \
do { \
const long datalen = rb_bstr_length(data); \
rb_bstr_resize(bstr, datalen + len); \
rb_bstr_set_length(bstr, datalen); \
} \
while (0)
static VALUE
pack_pack(VALUE ary, SEL sel, VALUE fmt)
{
static const char nul10[] = "\0\0\0\0\0\0\0\0\0\0";
static const char spc10[] = " ";
const char *p, *pend;
VALUE from, associates = 0;
char type;
long items, len, idx, plen;
const char *ptr;
int enc_info = 1; /* 0 - BINARY, 1 - US-ASCII, 2 - UTF-8 */
#ifdef NATINT_PACK
int natint; /* native integer */
#endif
int signed_p, integer_size, bigendian_p;
StringValue(fmt);
p = RSTRING_PTR(fmt);
pend = p + RSTRING_LEN(fmt);
VALUE data = rb_bstr_new();
items = RARRAY_LEN(ary);
idx = 0;
#define TOO_FEW (rb_raise(rb_eArgError, toofew), 0)
#define THISFROM (items > 0 ? RARRAY_AT(ary, idx) : TOO_FEW)
#define NEXTFROM (items-- > 0 ? RARRAY_AT(ary, idx++) : TOO_FEW)
while (p < pend) {
if (RSTRING_PTR(fmt) + RSTRING_LEN(fmt) != pend) {
rb_raise(rb_eRuntimeError, "format string modified");
}
type = *p++; /* get data type */
#ifdef NATINT_PACK
natint = 0;
#endif
if (ISSPACE(type)) continue;
if (type == '#') {
while ((p < pend) && (*p != '\n')) {
p++;
}
continue;
}
if (*p == '_' || *p == '!') {
static const char natstr[] = "sSiIlL";
if (strchr(natstr, type)) {
#ifdef NATINT_PACK
natint = 1;
#endif
p++;
}
else {
rb_raise(rb_eArgError, "'%c' allowed only after types %s", *p, natstr);
}
}
if (*p == '*') { /* set data length */
len = strchr("@Xxu", type) ? 0
: strchr("PMm", type) ? 1
: items;
p++;
}
else if (ISDIGIT(*p)) {
errno = 0;
len = STRTOUL(p, (char**)&p, 10);
if (errno) {
rb_raise(rb_eRangeError, "pack length too big");
}
}
else {
len = 1;
}
switch (type) {
case 'U':
/* if encoding is US-ASCII, upgrade to UTF-8 */
if (enc_info == 1) {
enc_info = 2;
}
break;
case 'm': case 'M': case 'u':
/* keep US-ASCII (do nothing) */
break;
default:
/* fall back to BINARY */
enc_info = 0;
break;
}
switch (type) {
case 'A': case 'a': case 'Z':
case 'B': case 'b':
case 'H': case 'h':
from = NEXTFROM;
if (NIL_P(from)) {
ptr = "";
plen = 0;
}
else {
StringValue(from);
ptr = RSTRING_PTR(from);
plen = RSTRING_LEN(from);
OBJ_INFECT(data, from);
}
if (p[-1] == '*')
len = plen;
switch (type) {
case 'a': /* arbitrary binary string (null padded) */
case 'A': /* arbitrary binary string (ASCII space padded) */
case 'Z': /* null terminated string */
if (plen >= len) {
PRE_ALLOCATE(data, len + 1);
rb_bstr_concat(data, (const UInt8 *)ptr, len);
if (p[-1] == '*' && type == 'Z') {
rb_bstr_concat(data, (const UInt8 *)nul10, 1);
}
}
else {
PRE_ALLOCATE(data, len);
rb_bstr_concat(data, (const UInt8 *)ptr, plen);
len -= plen;
while (len >= 10) {
rb_bstr_concat(data, (const UInt8 *)((type == 'A')?spc10:nul10), 10);
len -= 10;
}
rb_bstr_concat(data, (const UInt8 *)((type == 'A')?spc10:nul10), len);
}
break;
case 'b': /* bit string (ascending) */
{
int byte = 0;
long i, j = 0;
if (len > plen) {
j = (len - plen + 1)/2;
len = plen;
}
PRE_ALLOCATE(data, len);
for (i=0; i++ < len; ptr++) {
if (*ptr & 1)
byte |= 128;
if (i & 7)
byte >>= 1;
else {
char c = byte & 0xff;
rb_bstr_concat(data, (const UInt8 *)&c, 1);
byte = 0;
}
}
if (len & 7) {
char c;
byte >>= 7 - (len & 7);
c = byte & 0xff;
rb_bstr_concat(data, (const UInt8 *)&c, 1);
}
len = j;
goto grow;
}
break;
case 'B': /* bit string (descending) */
{
int byte = 0;
long i, j = 0;
if (len > plen) {
j = (len - plen + 1)/2;
len = plen;
}
PRE_ALLOCATE(data, len);
for (i=0; i++ < len; ptr++) {
byte |= *ptr & 1;
if (i & 7)
byte <<= 1;
else {
char c = byte & 0xff;
rb_bstr_concat(data, (const UInt8 *)&c, 1);
byte = 0;
}
}
if (len & 7) {
char c;
byte <<= 7 - (len & 7);
c = byte & 0xff;
rb_bstr_concat(data, (const UInt8 *)&c, 1);
}
len = j;
goto grow;
}
break;
case 'h': /* hex string (low nibble first) */
{
int byte = 0;
long i, j = 0;
if (len > plen) {
j = (len + 1) / 2 - (plen + 1) / 2;
len = plen;
}
PRE_ALLOCATE(data, len);
for (i=0; i++ < len; ptr++) {
if (ISALPHA(*ptr))
byte |= (((*ptr & 15) + 9) & 15) << 4;
else
byte |= (*ptr & 15) << 4;
if (i & 1)
byte >>= 4;
else {
char c = byte & 0xff;
rb_bstr_concat(data, (const UInt8 *)&c, 1);
byte = 0;
}
}
if (len & 1) {
char c = byte & 0xff;
rb_bstr_concat(data, (const UInt8 *)&c, 1);
}
len = j;
goto grow;
}
break;
case 'H': /* hex string (high nibble first) */
{
int byte = 0;
long i, j = 0;
if (len > plen) {
j = (len + 1) / 2 - (plen + 1) / 2;
len = plen;
}
PRE_ALLOCATE(data, len);
for (i=0; i++ < len; ptr++) {
if (ISALPHA(*ptr))
byte |= ((*ptr & 15) + 9) & 15;
else
byte |= *ptr & 15;
if (i & 1)
byte <<= 4;
else {
char c = byte & 0xff;
rb_bstr_concat(data, (const UInt8 *)&c, 1);
byte = 0;
}
}
if (len & 1) {
char c = byte & 0xff;
rb_bstr_concat(data, (const UInt8 *)&c, 1);
}
len = j;
goto grow;
}
break;
}
break;
case 'c': /* signed char */
case 'C': /* unsigned char */
PRE_ALLOCATE(data, len);
while (len-- > 0) {
char c;
from = NEXTFROM;
c = num2i32(from);
rb_bstr_concat(data, (const UInt8 *)&c, 1);
}
break;
case 's': /* signed short */
signed_p = 1;
integer_size = NATINT_LEN(short, 2);
bigendian_p = BIGENDIAN_P();
goto pack_integer;
case 'S': /* unsigned short */
signed_p = 0;
integer_size = NATINT_LEN(short, 2);
bigendian_p = BIGENDIAN_P();
goto pack_integer;
case 'i': /* signed int */
signed_p = 1;
integer_size = (int)sizeof(int);
bigendian_p = BIGENDIAN_P();
goto pack_integer;
case 'I': /* unsigned int */
signed_p = 0;
integer_size = (int)sizeof(int);
bigendian_p = BIGENDIAN_P();
goto pack_integer;
case 'l': /* signed long */
signed_p = 1;
integer_size = NATINT_LEN(long, 4);
bigendian_p = BIGENDIAN_P();
goto pack_integer;
case 'L': /* unsigned long */
signed_p = 0;
integer_size = NATINT_LEN(long, 4);
bigendian_p = BIGENDIAN_P();
goto pack_integer;
case 'q': /* signed quad (64bit) int */
signed_p = 1;
integer_size = 8;
bigendian_p = BIGENDIAN_P();
goto pack_integer;
case 'Q': /* unsigned quad (64bit) int */
signed_p = 0;
integer_size = 8;
bigendian_p = BIGENDIAN_P();
goto pack_integer;
case 'n': /* unsigned short (network byte-order) */
signed_p = 0;
integer_size = 2;
bigendian_p = 1;
goto pack_integer;
case 'N': /* unsigned long (network byte-order) */
signed_p = 0;
integer_size = 4;
bigendian_p = 1;
goto pack_integer;
case 'v': /* unsigned short (VAX byte-order) */
signed_p = 0;
integer_size = 2;
bigendian_p = 0;
goto pack_integer;
case 'V': /* unsigned long (VAX byte-order) */
signed_p = 0;
integer_size = 4;
bigendian_p = 0;
goto pack_integer;
pack_integer:
switch (integer_size) {
#if defined(HAVE_INT16_T) && !defined(FORCE_BIG_PACK)
case SIZEOF_INT16_T:
PRE_ALLOCATE(data, NATINT_LEN(int16_t, len));
while (len-- > 0) {
union {
int16_t i;
char a[sizeof(int16_t)];
} v;
from = NEXTFROM;
v.i = (int16_t)num2i32(from);
if (bigendian_p != BIGENDIAN_P()) v.i = swap16(v.i);
rb_bstr_concat(data, (const UInt8 *)v.a, sizeof(int16_t));
}
break;
#endif
#if defined(HAVE_INT32_T) && !defined(FORCE_BIG_PACK)
case SIZEOF_INT32_T:
PRE_ALLOCATE(data, NATINT_LEN(int32_t, len));
while (len-- > 0) {
union {
int32_t i;
char a[sizeof(int32_t)];
} v;
from = NEXTFROM;
v.i = (int32_t)num2i32(from);
if (bigendian_p != BIGENDIAN_P()) v.i = swap32(v.i);
rb_bstr_concat(data, (const UInt8 *)v.a, sizeof(int32_t));
}
break;
#endif
#if defined(HAVE_INT64_T) && SIZEOF_LONG == SIZEOF_INT64_T && !defined(FORCE_BIG_PACK)
case SIZEOF_INT64_T:
PRE_ALLOCATE(data, NATINT_LEN(int64_t, len));
while (len-- > 0) {
union {
int64_t i;
char a[sizeof(int64_t)];
} v;
from = NEXTFROM;
v.i = num2i32(from); /* can return 64bit value if SIZEOF_LONG == SIZEOF_INT64_T */
if (bigendian_p != BIGENDIAN_P()) v.i = swap64(v.i);
rb_bstr_concat(data, (const UInt8 *)v.a, sizeof(int64_t));
}
break;
#endif
default:
if (integer_size > MAX_INTEGER_PACK_SIZE)
rb_bug("unexpected intger size for pack: %d", integer_size);
PRE_ALLOCATE(data, integer_size * len);
while (len-- > 0) {
union {
unsigned long i[(MAX_INTEGER_PACK_SIZE+SIZEOF_LONG-1)/SIZEOF_LONG];
char a[(MAX_INTEGER_PACK_SIZE+SIZEOF_LONG-1)/SIZEOF_LONG*SIZEOF_LONG];
} v;
int num_longs = (integer_size+SIZEOF_LONG-1)/SIZEOF_LONG;
int i;
from = NEXTFROM;
rb_big_pack(from, v.i, num_longs);
if (bigendian_p) {
for (i = 0; i < num_longs/2; i++) {
unsigned long t = v.i[i];
v.i[i] = v.i[num_longs-1-i];
v.i[num_longs-1-i] = t;
}
}
if (bigendian_p != BIGENDIAN_P()) {
for (i = 0; i < num_longs; i++)
v.i[i] = swapl(v.i[i]);
}
rb_bstr_concat(data,
bigendian_p ?
(const UInt8 *)(v.a + sizeof(long)*num_longs - integer_size) :
(const UInt8 *)v.a,
integer_size);
}
break;
}
break;
case 'f': /* single precision float in native format */
case 'F': /* ditto */
PRE_ALLOCATE(data, len * sizeof(float));
while (len-- > 0) {
float f;
from = NEXTFROM;
f = RFLOAT_VALUE(rb_to_float(from));
rb_bstr_concat(data, (const UInt8 *)&f, sizeof(float));
}
break;
case 'e': /* single precision float in VAX byte-order */
PRE_ALLOCATE(data, len * sizeof(float));
while (len-- > 0) {
float f;
FLOAT_CONVWITH(ftmp);
from = NEXTFROM;
f = RFLOAT_VALUE(rb_to_float(from));
f = HTOVF(f,ftmp);
rb_bstr_concat(data, (const UInt8 *)&f, sizeof(float));
}
break;
case 'E': /* double precision float in VAX byte-order */
PRE_ALLOCATE(data, len * sizeof(double));
while (len-- > 0) {
double d;
DOUBLE_CONVWITH(dtmp);
from = NEXTFROM;
d = RFLOAT_VALUE(rb_to_float(from));
d = HTOVD(d,dtmp);
rb_bstr_concat(data, (const UInt8 *)&d, sizeof(double));
}
break;
case 'd': /* double precision float in native format */
case 'D': /* ditto */
PRE_ALLOCATE(data, len * sizeof(double));
while (len-- > 0) {
double d;
from = NEXTFROM;
d = RFLOAT_VALUE(rb_to_float(from));
rb_bstr_concat(data, (const UInt8 *)&d, sizeof(double));
}
break;
case 'g': /* single precision float in network byte-order */
PRE_ALLOCATE(data, len * sizeof(float));
while (len-- > 0) {
float f;
FLOAT_CONVWITH(ftmp);
from = NEXTFROM;
f = RFLOAT_VALUE(rb_to_float(from));
f = HTONF(f,ftmp);
rb_bstr_concat(data, (const UInt8 *)&f, sizeof(float));
}
break;
case 'G': /* double precision float in network byte-order */
PRE_ALLOCATE(data, len * sizeof(double));
while (len-- > 0) {
double d;
DOUBLE_CONVWITH(dtmp);
from = NEXTFROM;
d = RFLOAT_VALUE(rb_to_float(from));
d = HTOND(d,dtmp);
rb_bstr_concat(data, (const UInt8 *)&d, sizeof(double));
}
break;
case 'x': /* null byte */
grow:
PRE_ALLOCATE(data, len);
while (len >= 10) {
rb_bstr_concat(data, (const UInt8 *)nul10, 10);
len -= 10;
}
rb_bstr_concat(data, (const UInt8 *)nul10, len);
break;
case 'X': /* back up byte */
shrink:
plen = rb_bstr_length(data);
if (plen < len) {
rb_raise(rb_eArgError, "X outside of string");
}
rb_bstr_set_length(data, plen - len);
break;
case '@': /* null fill to absolute position */
len -= rb_bstr_length(data);
if (len > 0) {
goto grow;
}
len = -len;
if (len > 0) {
goto shrink;
}
break;
case '%':
rb_raise(rb_eArgError, "%% is not supported");
break;
case 'U': /* Unicode character */
PRE_ALLOCATE(data, 6 * len);
while (len-- > 0) {
SIGNED_VALUE l;
char buf[8];
int le;
from = NEXTFROM;
from = rb_to_int(from);
l = NUM2LONG(from);
if (l < 0) {
rb_raise(rb_eRangeError, "pack(U): value out of range");
}
le = rb_uv_to_utf8(buf, l);
rb_bstr_concat(data, (const UInt8 *)buf, le);
}
break;
case 'u': /* uuencoded string */
case 'm': /* base64 encoded string */
from = NEXTFROM;
StringValue(from);
ptr = RSTRING_PTR(from);
plen = RSTRING_LEN(from);
if (len == 0 && type == 'm') {
encodes(data, ptr, plen, type, 0);
ptr += plen;
break;
}
if (len <= 2) {
len = 45;
}
else {
len = len / 3 * 3;
}
PRE_ALLOCATE(data, (plen / len) * (len * 4 / 3 + 6));
while (plen > 0) {
long todo;
if (plen > len) {
todo = len;
}
else {
todo = plen;
}
encodes(data, ptr, todo, type, 1);
plen -= todo;
ptr += todo;
}
break;
case 'M': /* quoted-printable encoded string */
from = rb_obj_as_string(NEXTFROM);
if (len <= 1) {
len = 72;
}
qpencode(data, from, len);
break;
case 'P': /* pointer to packed byte string */