diff options
Diffstat (limited to 'pack.c')
| -rw-r--r-- | pack.c | 3350 |
1 files changed, 1380 insertions, 1970 deletions
@@ -9,36 +9,65 @@ **********************************************************************/ -#include "ruby/ruby.h" -#include "ruby/encoding.h" -#include <sys/types.h> +#include "ruby/internal/config.h" + #include <ctype.h> #include <errno.h> +#include <float.h> +#include <sys/types.h> + +#include "internal.h" +#include "internal/array.h" +#include "internal/bits.h" +#include "internal/string.h" +#include "internal/symbol.h" +#include "internal/variable.h" +#include "ruby/util.h" + +#include "builtin.h" + +/* + * It is intentional that the condition for natstr is HAVE_TRUE_LONG_LONG + * instead of HAVE_LONG_LONG or LONG_LONG. + * This means q! and Q! means always the standard long long type and + * causes ArgumentError for platforms which has no long long type, + * even if the platform has an implementation specific 64bit type. + * This behavior is consistent with the document of pack/unpack. + */ +#ifdef HAVE_TRUE_LONG_LONG +static const char natstr[] = "sSiIlLqQjJ"; +# define endstr natstr +#else +static const char natstr[] = "sSiIlLjJ"; +static const char endstr[] = "sSiIlLqQjJ"; +#endif + +#ifdef HAVE_TRUE_LONG_LONG +/* It is intentional to use long long instead of LONG_LONG. */ +# define NATINT_LEN_Q NATINT_LEN(long long, 8) +#else +# define NATINT_LEN_Q 8 +#endif -#define GCC_VERSION_SINCE(major, minor, patchlevel) \ - (defined(__GNUC__) && !defined(__INTEL_COMPILER) && \ - ((__GNUC__ > (major)) || \ - (__GNUC__ == (major) && __GNUC_MINOR__ > (minor)) || \ - (__GNUC__ == (major) && __GNUC_MINOR__ == (minor) && __GNUC_PATCHLEVEL__ >= (patchlevel)))) -#if SIZEOF_SHORT != 2 || SIZEOF_LONG != 4 +#if SIZEOF_SHORT != 2 || SIZEOF_LONG != 4 || (defined(HAVE_TRUE_LONG_LONG) && SIZEOF_LONG_LONG != 8) # 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; - } +/* 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 @@ -52,129 +81,18 @@ # 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 = xmalloc(sizeof(xtype)); \ - *zp = z; \ - s = (unsigned char*)zp; \ - t = xmalloc(sizeof(xtype)); \ - for (i=0; i<sizeof(xtype); i++) { \ - t[sizeof(xtype)-i-1] = s[i]; \ - } \ - r = *(xtype *)t; \ - xfree(t); \ - xfree(zp); \ - return r; \ -} - -#if GCC_VERSION_SINCE(4,3,0) -# define swap32(x) __builtin_bswap32(x) -# define swap64(x) __builtin_bswap64(x) -#endif - -#ifndef swap16 -# define swap16(x) ((uint16_t)((((x)&0xFF)<<8) | (((x)>>8)&0xFF))) -#endif - -#ifndef swap32 -# define swap32(x) ((uint32_t)((((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) ((uint64_t)((((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 && defined(HAVE_INT32_T) -# define swapf(x) swap32(x) -# define FLOAT_SWAPPER uint32_t -#else - define_swapx(f,float) -#endif - -#if SIZEOF_DOUBLE == 8 && defined(HAVE_INT64_T) -# define swapd(x) swap64(x) -# define DOUBLE_SWAPPER uint64_t -#elif SIZEOF_DOUBLE == 8 && defined(HAVE_INT32_T) - static double - swapd(const double d) - { - double dtmp = d; - uint32_t utmp[2]; - uint32_t utmp0; - - utmp[0] = 0; utmp[1] = 0; - memcpy(utmp,&dtmp,sizeof(double)); - utmp0 = utmp[0]; - utmp[0] = swap32(utmp[1]); - utmp[1] = swap32(utmp0); - memcpy(&dtmp,utmp,sizeof(double)); - return dtmp; - } -#else - define_swapx(d, double) -#endif - -#undef define_swapx +typedef union { + float f; + uint32_t u; + char buf[4]; +} FLOAT_SWAPPER; +typedef union { + double d; + uint64_t u; + char buf[8]; +} DOUBLE_SWAPPER; +#define swapf(x) swap32(x) +#define swapd(x) swap64(x) #define rb_ntohf(x) (BIGENDIAN_P()?(x):swapf(x)) #define rb_ntohd(x) (BIGENDIAN_P()?(x):swapd(x)) @@ -185,74 +103,19 @@ TOKEN_PASTE(swap,x)(xtype z) \ #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 - -static unsigned long -num2i32(VALUE x) -{ - x = rb_to_int(x); /* is nil OK? (should not) */ - - if (FIXNUM_P(x)) return FIX2LONG(x); - if (RB_TYPE_P(x, T_BIGNUM)) { - return rb_big2ulong_pack(x); - } - rb_raise(rb_eTypeError, "can't convert %s to `integer'", rb_obj_classname(x)); +#define FLOAT_CONVWITH(x) FLOAT_SWAPPER x; +#define HTONF(x) ((x).u = rb_htonf((x).u)) +#define HTOVF(x) ((x).u = rb_htovf((x).u)) +#define NTOHF(x) ((x).u = rb_ntohf((x).u)) +#define VTOHF(x) ((x).u = rb_vtohf((x).u)) - UNREACHABLE; -} +#define DOUBLE_CONVWITH(x) DOUBLE_SWAPPER x; +#define HTOND(x) ((x).u = rb_htond((x).u)) +#define HTOVD(x) ((x).u = rb_htovd((x).u)) +#define NTOHD(x) ((x).u = rb_ntohd((x).u)) +#define VTOHD(x) ((x).u = rb_vtohd((x).u)) #define MAX_INTEGER_PACK_SIZE 8 -/* #define FORCE_BIG_PACK */ static const char toofew[] = "too few arguments"; @@ -266,869 +129,725 @@ static ID id_associated; static void str_associate(VALUE str, VALUE add) { - VALUE assoc; + /* assert(NIL_P(rb_attr_get(str, id_associated))); */ + rb_ivar_set(str, id_associated, add); +} + +static VALUE +str_associated(VALUE str) +{ + VALUE associates = rb_ivar_lookup(str, id_associated, Qfalse); + if (!associates) + rb_raise(rb_eArgError, "no associated pointer"); + return associates; +} + +static VALUE +associated_pointer(VALUE associates, const char *t) +{ + const VALUE *p = RARRAY_CONST_PTR(associates); + const VALUE *pend = p + RARRAY_LEN(associates); + for (; p < pend; p++) { + VALUE tmp = *p; + if (RB_TYPE_P(tmp, T_STRING) && RSTRING_PTR(tmp) == t) return tmp; + } + rb_raise(rb_eArgError, "non associated pointer"); + UNREACHABLE_RETURN(Qnil); +} - assoc = rb_attr_get(str, id_associated); - if (RB_TYPE_P(assoc, T_ARRAY)) { - /* already associated */ - rb_ary_concat(assoc, add); +RBIMPL_ATTR_NORETURN() +static void +unknown_directive(const char *mode, char type, VALUE fmt) +{ + char unknown[5]; + + if (ISPRINT(type)) { + unknown[0] = type; + unknown[1] = '\0'; } else { - rb_ivar_set(str, id_associated, add); + snprintf(unknown, sizeof(unknown), "\\x%.2x", type & 0xff); } + fmt = rb_str_quote_unprintable(fmt); + rb_raise(rb_eArgError, "unknown %s directive '%s' in '%"PRIsVALUE"'", + mode, unknown, fmt); } -static VALUE -str_associated(VALUE str) +static float +VALUE_to_float(VALUE obj) +{ + VALUE v = rb_to_float(obj); + double d = RFLOAT_VALUE(v); + + if (isnan(d)) { + return NAN; + } + else if (d < -FLT_MAX) { + return -INFINITY; + } + else if (d <= FLT_MAX) { + return d; + } + else { + return INFINITY; + } +} + +static void +str_expand_fill(VALUE res, int c, long len) { - VALUE assoc = rb_attr_get(str, id_associated); - if (NIL_P(assoc)) assoc = Qfalse; - return assoc; + long olen = RSTRING_LEN(res); + memset(RSTRING_PTR(res) + olen, c, len); + rb_str_set_len(res, olen + len); } -/* - * 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 (unsigned char) - * S | Integer | 16-bit unsigned, native endian (uint16_t) - * L | Integer | 32-bit unsigned, native endian (uint32_t) - * Q | Integer | 64-bit unsigned, native endian (uint64_t) - * | | - * c | Integer | 8-bit signed (signed char) - * s | Integer | 16-bit signed, native endian (int16_t) - * l | Integer | 32-bit signed, native endian (int32_t) - * q | Integer | 64-bit signed, 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 - * | | - * S> L> Q> | Integer | same as the directives without ">" except - * s> l> q> | | big endian - * S!> I!> | | (available since Ruby 1.9.3) - * L!> | | "S>" is same as "n" - * s!> i!> | | "L>" is same as "N" - * l!> | | - * | | - * S< L< Q< | Integer | same as the directives without "<" except - * s< l< q< | | little endian - * S!< I!< | | (available since Ruby 1.9.3) - * L!< | | "S<" is same as "v" - * s!< i!< | | "L<" is same as "V" - * l!< | | - * | | - * n | Integer | 16-bit unsigned, network (big-endian) byte order - * N | Integer | 32-bit unsigned, network (big-endian) byte order - * v | Integer | 16-bit unsigned, VAX (little-endian) byte order - * V | Integer | 32-bit unsigned, VAX (little-endian) byte order - * | | - * U | Integer | UTF-8 character - * w | Integer | BER-compressed integer - * - * Float | | - * Directive | | Meaning - * --------------------------------------------------------------------------- - * D, d | Float | double-precision, native format - * F, f | Float | single-precision, native format - * E | Float | double-precision, little-endian byte order - * e | Float | single-precision, little-endian byte order - * G | Float | double-precision, network (big-endian) byte order - * g | Float | single-precision, 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 - */ +static char * +skip_to_eol(const char *p, const char *pend) +{ + p = memchr(p, '\n', pend - p); + return (char *)(p ? p + 1 : pend); +} + +#define skip_blank(p, type) \ + (ISSPACE(type) || (type == '#' && (p = skip_to_eol(p, pend), 1))) + +#ifndef NATINT_PACK +# define pack_modifiers(p, t, n, e) pack_modifiers(p, t, e) +#endif +static char * +pack_modifiers(const char *p, char type, int *natint, int *explicit_endian) +{ + while (1) { + switch (*p) { + case '_': + case '!': + if (strchr(natstr, type)) { +#ifdef NATINT_PACK + *natint = 1; +#endif + p++; + } + else { + rb_raise(rb_eArgError, "'%c' allowed only after types %s", *p, natstr); + } + break; + + case '<': + case '>': + if (!strchr(endstr, type)) { + rb_raise(rb_eArgError, "'%c' allowed only after types %s", *p, endstr); + } + if (*explicit_endian) { + rb_raise(rb_eRangeError, "Can't use both '<' and '>'"); + } + *explicit_endian = *p++; + break; + default: + return (char *)p; + } + } +} static VALUE -pack_pack(VALUE ary, VALUE fmt) +pack_pack(rb_execution_context_t *ec, VALUE ary, VALUE fmt, VALUE buffer) { - static const char nul10[] = "\0\0\0\0\0\0\0\0\0\0"; - static const char spc10[] = " "; const char *p, *pend; VALUE res, from, associates = 0; - char type; - long items, len, idx, plen; + long 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 integer_size, bigendian_p; StringValue(fmt); + rb_must_asciicompat(fmt); p = RSTRING_PTR(fmt); pend = p + RSTRING_LEN(fmt); - res = rb_str_buf_new(0); - items = RARRAY_LEN(ary); + if (NIL_P(buffer)) { + res = rb_str_buf_new(0); + } + else { + if (!RB_TYPE_P(buffer, T_STRING)) + rb_raise(rb_eTypeError, "buffer must be String, not %s", rb_obj_classname(buffer)); + rb_str_modify(buffer); + res = buffer; + } + idx = 0; #define TOO_FEW (rb_raise(rb_eArgError, toofew), 0) -#define THISFROM (items > 0 ? RARRAY_PTR(ary)[idx] : TOO_FEW) -#define NEXTFROM (items-- > 0 ? RARRAY_PTR(ary)[idx++] : TOO_FEW) +#define MORE_ITEM (idx < RARRAY_LEN(ary)) +#define THISFROM (MORE_ITEM ? RARRAY_AREF(ary, idx) : TOO_FEW) +#define NEXTFROM (MORE_ITEM ? RARRAY_AREF(ary, idx++) : TOO_FEW) while (p < pend) { - int explicit_endian = 0; - if (RSTRING_PTR(fmt) + RSTRING_LEN(fmt) != pend) { - rb_raise(rb_eRuntimeError, "format string modified"); - } - type = *p++; /* get data type */ + int explicit_endian = 0; + if (RSTRING_END(fmt) != pend) { + rb_raise(rb_eRuntimeError, "format string modified"); + } + const char type = *p++; /* get data type */ #ifdef NATINT_PACK - natint = 0; + int natint = 0; /* native integer */ #endif - if (ISSPACE(type)) continue; - if (type == '#') { - while ((p < pend) && (*p != '\n')) { - p++; - } - continue; - } - - { - static const char natstr[] = "sSiIlL"; - static const char endstr[] = "sSiIlLqQ"; - - modifiers: - switch (*p) { - case '_': - case '!': - if (strchr(natstr, type)) { -#ifdef NATINT_PACK - natint = 1; -#endif - p++; - } - else { - rb_raise(rb_eArgError, "'%c' allowed only after types %s", *p, natstr); - } - goto modifiers; - - case '<': - case '>': - if (!strchr(endstr, type)) { - rb_raise(rb_eArgError, "'%c' allowed only after types %s", *p, endstr); - } - if (explicit_endian) { - rb_raise(rb_eRangeError, "Can't use both '<' and '>'"); - } - explicit_endian = *p++; - goto modifiers; - } - } - - if (*p == '*') { /* set data length */ - len = strchr("@Xxu", type) ? 0 + if (skip_blank(p, type)) continue; + p = pack_modifiers(p, type, &natint, &explicit_endian); + + 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(res, 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) { - rb_str_buf_cat(res, ptr, len); - if (p[-1] == '*' && type == 'Z') - rb_str_buf_cat(res, nul10, 1); - } - else { - rb_str_buf_cat(res, ptr, plen); - len -= plen; - while (len >= 10) { - rb_str_buf_cat(res, (type == 'A')?spc10:nul10, 10); - len -= 10; - } - rb_str_buf_cat(res, (type == 'A')?spc10:nul10, len); - } - break; + : RARRAY_LEN(ary) - idx; + p++; + } + else if (ISDIGIT(*p)) { + errno = 0; + len = STRTOUL(p, (char**)&p, 10); + if (len < 0 || 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); + } + + 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) { + rb_str_buf_cat(res, ptr, len); + if (p[-1] == '*' && type == 'Z') + rb_str_buf_cat(res, "", 1); + } + else { + rb_str_modify_expand(res, len); + rb_str_buf_cat(res, ptr, plen); + str_expand_fill(res, (type == 'A' ? ' ' : '\0'), len - plen); + } + break; #define castchar(from) (char)((from) & 0xff) - case 'b': /* bit string (ascending) */ - { - int byte = 0; - long i, j = 0; - - if (len > plen) { - j = (len - plen + 1)/2; - len = plen; - } - for (i=0; i++ < len; ptr++) { - if (*ptr & 1) - byte |= 128; - if (i & 7) - byte >>= 1; - else { - char c = castchar(byte); - rb_str_buf_cat(res, &c, 1); - byte = 0; - } - } - if (len & 7) { - char c; - byte >>= 7 - (len & 7); - c = castchar(byte); - rb_str_buf_cat(res, &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; - } - for (i=0; i++ < len; ptr++) { - byte |= *ptr & 1; - if (i & 7) - byte <<= 1; - else { - char c = castchar(byte); - rb_str_buf_cat(res, &c, 1); - byte = 0; - } - } - if (len & 7) { - char c; - byte <<= 7 - (len & 7); - c = castchar(byte); - rb_str_buf_cat(res, &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; - } - 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 = castchar(byte); - rb_str_buf_cat(res, &c, 1); - byte = 0; - } - } - if (len & 1) { - char c = castchar(byte); - rb_str_buf_cat(res, &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; - } - 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 = castchar(byte); - rb_str_buf_cat(res, &c, 1); - byte = 0; - } - } - if (len & 1) { - char c = castchar(byte); - rb_str_buf_cat(res, &c, 1); - } - len = j; - goto grow; - } - break; - } - break; - - case 'c': /* signed char */ - case 'C': /* unsigned char */ - while (len-- > 0) { - char c; - - from = NEXTFROM; - c = (char)num2i32(from); - rb_str_buf_cat(res, &c, sizeof(char)); - } - break; - - case 's': /* signed short */ - integer_size = NATINT_LEN(short, 2); - bigendian_p = BIGENDIAN_P(); - goto pack_integer; + case 'b': /* bit string (ascending) */ + { + int byte = 0; + long i, j = 0; - case 'S': /* unsigned short */ - integer_size = NATINT_LEN(short, 2); - bigendian_p = BIGENDIAN_P(); + if (len > plen) { + j = (len - plen + 1)/2; + len = plen; + } + for (i=0; i++ < len; ptr++) { + if (*ptr & 1) + byte |= 128; + if (i & 7) + byte >>= 1; + else { + char c = castchar(byte); + rb_str_buf_cat(res, &c, 1); + byte = 0; + } + } + if (len & 7) { + char c; + byte >>= 7 - (len & 7); + c = castchar(byte); + rb_str_buf_cat(res, &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; + } + for (i=0; i++ < len; ptr++) { + byte |= *ptr & 1; + if (i & 7) + byte <<= 1; + else { + char c = castchar(byte); + rb_str_buf_cat(res, &c, 1); + byte = 0; + } + } + if (len & 7) { + char c; + byte <<= 7 - (len & 7); + c = castchar(byte); + rb_str_buf_cat(res, &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; + } + 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 = castchar(byte); + rb_str_buf_cat(res, &c, 1); + byte = 0; + } + } + if (len & 1) { + char c = castchar(byte); + rb_str_buf_cat(res, &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; + } + 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 = castchar(byte); + rb_str_buf_cat(res, &c, 1); + byte = 0; + } + } + if (len & 1) { + char c = castchar(byte); + rb_str_buf_cat(res, &c, 1); + } + len = j; + goto grow; + } + break; + } + break; + + case 'c': /* signed char */ + case 'C': /* unsigned char */ + integer_size = 1; + bigendian_p = BIGENDIAN_P(); /* not effective */ goto pack_integer; - case 'i': /* signed int */ - integer_size = (int)sizeof(int); + case 's': /* s for int16_t, s! for signed short */ + case 'S': /* S for uint16_t, S! for unsigned short */ + integer_size = NATINT_LEN(short, 2); bigendian_p = BIGENDIAN_P(); goto pack_integer; - case 'I': /* unsigned int */ + case 'i': /* i and i! for signed int */ + case 'I': /* I and I! for unsigned int */ integer_size = (int)sizeof(int); bigendian_p = BIGENDIAN_P(); goto pack_integer; - case 'l': /* signed long */ + case 'l': /* l for int32_t, l! for signed long */ + case 'L': /* L for uint32_t, L! for unsigned long */ integer_size = NATINT_LEN(long, 4); bigendian_p = BIGENDIAN_P(); goto pack_integer; - case 'L': /* unsigned long */ - integer_size = NATINT_LEN(long, 4); + case 'q': /* q for int64_t, q! for signed long long */ + case 'Q': /* Q for uint64_t, Q! for unsigned long long */ + integer_size = NATINT_LEN_Q; bigendian_p = BIGENDIAN_P(); goto pack_integer; - case 'q': /* signed quad (64bit) int */ - integer_size = 8; + case 'j': /* j for intptr_t */ + integer_size = sizeof(intptr_t); bigendian_p = BIGENDIAN_P(); goto pack_integer; - case 'Q': /* unsigned quad (64bit) int */ - integer_size = 8; + case 'J': /* J for uintptr_t */ + integer_size = sizeof(uintptr_t); bigendian_p = BIGENDIAN_P(); goto pack_integer; - case 'n': /* unsigned short (network byte-order) */ + case 'n': /* 16 bit (2 bytes) integer (network byte-order) */ integer_size = 2; bigendian_p = 1; goto pack_integer; - case 'N': /* unsigned long (network byte-order) */ + case 'N': /* 32 bit (4 bytes) integer (network byte-order) */ integer_size = 4; bigendian_p = 1; goto pack_integer; - case 'v': /* unsigned short (VAX byte-order) */ + case 'v': /* 16 bit (2 bytes) integer (VAX byte-order) */ integer_size = 2; bigendian_p = 0; goto pack_integer; - case 'V': /* unsigned long (VAX byte-order) */ + case 'V': /* 32 bit (4 bytes) integer (VAX byte-order) */ integer_size = 4; bigendian_p = 0; goto pack_integer; pack_integer: - if (explicit_endian) { - bigendian_p = explicit_endian == '>'; - } - - switch (integer_size) { -#if defined(HAVE_INT16_T) && !defined(FORCE_BIG_PACK) - case SIZEOF_INT16_T: - 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_str_buf_cat(res, v.a, sizeof(int16_t)); - } - break; -#endif + if (explicit_endian) { + bigendian_p = explicit_endian == '>'; + } + if (integer_size > MAX_INTEGER_PACK_SIZE) + rb_bug("unexpected integer size for pack: %d", integer_size); + while (len-- > 0) { + char intbuf[MAX_INTEGER_PACK_SIZE]; + + from = NEXTFROM; + rb_integer_pack(from, intbuf, integer_size, 1, 0, + INTEGER_PACK_2COMP | + (bigendian_p ? INTEGER_PACK_BIG_ENDIAN : INTEGER_PACK_LITTLE_ENDIAN)); + rb_str_buf_cat(res, intbuf, integer_size); + } + break; -#if defined(HAVE_INT32_T) && !defined(FORCE_BIG_PACK) - case SIZEOF_INT32_T: - 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_str_buf_cat(res, v.a, sizeof(int32_t)); - } - break; -#endif + case 'f': /* single precision float in native format */ + case 'F': /* ditto */ + while (len-- > 0) { + float f; -#if defined(HAVE_INT64_T) && SIZEOF_LONG == SIZEOF_INT64_T && !defined(FORCE_BIG_PACK) - case SIZEOF_INT64_T: - 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_str_buf_cat(res, v.a, sizeof(int64_t)); - } - break; -#endif + from = NEXTFROM; + f = VALUE_to_float(from); + rb_str_buf_cat(res, (char*)&f, sizeof(float)); + } + break; - default: - if (integer_size > MAX_INTEGER_PACK_SIZE) - rb_bug("unexpected intger size for pack: %d", integer_size); - 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; + case 'e': /* single precision float in VAX byte-order */ + while (len-- > 0) { + FLOAT_CONVWITH(tmp); - 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_str_buf_cat(res, - bigendian_p ? - v.a + sizeof(long)*num_longs - integer_size : - v.a, - integer_size); + from = NEXTFROM; + tmp.f = VALUE_to_float(from); + HTOVF(tmp); + rb_str_buf_cat(res, tmp.buf, sizeof(float)); + } + break; + + case 'E': /* double precision float in VAX byte-order */ + while (len-- > 0) { + DOUBLE_CONVWITH(tmp); + from = NEXTFROM; + tmp.d = RFLOAT_VALUE(rb_to_float(from)); + HTOVD(tmp); + rb_str_buf_cat(res, tmp.buf, sizeof(double)); + } + break; + + case 'd': /* double precision float in native format */ + case 'D': /* ditto */ + while (len-- > 0) { + double d; + + from = NEXTFROM; + d = RFLOAT_VALUE(rb_to_float(from)); + rb_str_buf_cat(res, (char*)&d, sizeof(double)); + } + break; + + case 'g': /* single precision float in network byte-order */ + while (len-- > 0) { + FLOAT_CONVWITH(tmp); + from = NEXTFROM; + tmp.f = VALUE_to_float(from); + HTONF(tmp); + rb_str_buf_cat(res, tmp.buf, sizeof(float)); + } + break; + + case 'G': /* double precision float in network byte-order */ + while (len-- > 0) { + DOUBLE_CONVWITH(tmp); + + from = NEXTFROM; + tmp.d = RFLOAT_VALUE(rb_to_float(from)); + HTOND(tmp); + rb_str_buf_cat(res, tmp.buf, sizeof(double)); + } + break; + + case 'x': /* null byte */ + grow: + rb_str_modify_expand(res, len); + str_expand_fill(res, '\0', len); + break; + + case 'X': /* back up byte */ + shrink: + plen = RSTRING_LEN(res); + if (plen < len) + rb_raise(rb_eArgError, "X outside of string"); + rb_str_set_len(res, plen - len); + break; + + case '@': /* null fill to absolute position */ + len -= RSTRING_LEN(res); + 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 */ + 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_str_buf_cat(res, (char*)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(res, ptr, plen, type, 0); + ptr += plen; break; - } - break; - - case 'f': /* single precision float in native format */ - case 'F': /* ditto */ - while (len-- > 0) { - float f; - - from = NEXTFROM; - f = (float)RFLOAT_VALUE(rb_to_float(from)); - rb_str_buf_cat(res, (char*)&f, sizeof(float)); - } - break; - - case 'e': /* single precision float in VAX byte-order */ - while (len-- > 0) { - float f; - FLOAT_CONVWITH(ftmp); - - from = NEXTFROM; - f = (float)RFLOAT_VALUE(rb_to_float(from)); - f = HTOVF(f,ftmp); - rb_str_buf_cat(res, (char*)&f, sizeof(float)); - } - break; - - case 'E': /* double precision float in VAX byte-order */ - while (len-- > 0) { - double d; - DOUBLE_CONVWITH(dtmp); - - from = NEXTFROM; - d = RFLOAT_VALUE(rb_to_float(from)); - d = HTOVD(d,dtmp); - rb_str_buf_cat(res, (char*)&d, sizeof(double)); - } - break; - - case 'd': /* double precision float in native format */ - case 'D': /* ditto */ - while (len-- > 0) { - double d; - - from = NEXTFROM; - d = RFLOAT_VALUE(rb_to_float(from)); - rb_str_buf_cat(res, (char*)&d, sizeof(double)); - } - break; - - case 'g': /* single precision float in network byte-order */ - while (len-- > 0) { - float f; - FLOAT_CONVWITH(ftmp); - - from = NEXTFROM; - f = (float)RFLOAT_VALUE(rb_to_float(from)); - f = HTONF(f,ftmp); - rb_str_buf_cat(res, (char*)&f, sizeof(float)); - } - break; - - case 'G': /* double precision float in network byte-order */ - while (len-- > 0) { - double d; - DOUBLE_CONVWITH(dtmp); - - from = NEXTFROM; - d = RFLOAT_VALUE(rb_to_float(from)); - d = HTOND(d,dtmp); - rb_str_buf_cat(res, (char*)&d, sizeof(double)); - } - break; - - case 'x': /* null byte */ - grow: - while (len >= 10) { - rb_str_buf_cat(res, nul10, 10); - len -= 10; - } - rb_str_buf_cat(res, nul10, len); - break; - - case 'X': /* back up byte */ - shrink: - plen = RSTRING_LEN(res); - if (plen < len) - rb_raise(rb_eArgError, "X outside of string"); - rb_str_set_len(res, plen - len); - break; - - case '@': /* null fill to absolute position */ - len -= RSTRING_LEN(res); - 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 */ - 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_str_buf_cat(res, (char*)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(res, ptr, plen, type, 0); - ptr += plen; - break; - } - if (len <= 2) - len = 45; - else if (len > 63 && type == 'u') - len = 63; - else - len = len / 3 * 3; - while (plen > 0) { - long todo; - - if (plen > len) - todo = len; - else - todo = plen; - encodes(res, 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(res, from, len); - break; - - case 'P': /* pointer to packed byte string */ - from = THISFROM; - if (!NIL_P(from)) { - StringValue(from); - if (RSTRING_LEN(from) < len) { - rb_raise(rb_eArgError, "too short buffer for P(%ld for %ld)", - RSTRING_LEN(from), len); - } - } - len = 1; - /* FALL THROUGH */ - case 'p': /* pointer to string */ - while (len-- > 0) { - char *t; - from = NEXTFROM; - if (NIL_P(from)) { - t = 0; - } - else { - t = StringValuePtr(from); - } - if (!associates) { - associates = rb_ary_new(); - } - rb_ary_push(associates, from); - rb_obj_taint(from); - rb_str_buf_cat(res, (char*)&t, sizeof(char*)); - } - break; - - case 'w': /* BER compressed integer */ - while (len-- > 0) { - unsigned long ul; - VALUE buf = rb_str_new(0, 0); - char c, *bufs, *bufe; - - from = NEXTFROM; - if (RB_TYPE_P(from, T_BIGNUM)) { - VALUE big128 = rb_uint2big(128); - while (RB_TYPE_P(from, T_BIGNUM)) { - from = rb_big_divmod(from, big128); - c = castchar(NUM2INT(RARRAY_PTR(from)[1]) | 0x80); /* mod */ - rb_str_buf_cat(buf, &c, sizeof(char)); - from = RARRAY_PTR(from)[0]; /* div */ - } - } - - { - long l = NUM2LONG(from); - if (l < 0) { - rb_raise(rb_eArgError, "can't compress negative numbers"); - } - ul = l; - } - - while (ul) { - c = castchar((ul & 0x7f) | 0x80); - rb_str_buf_cat(buf, &c, sizeof(char)); - ul >>= 7; - } - - if (RSTRING_LEN(buf)) { - bufs = RSTRING_PTR(buf); - bufe = bufs + RSTRING_LEN(buf) - 1; - *bufs &= 0x7f; /* clear continue bit */ - while (bufs < bufe) { /* reverse */ - c = *bufs; - *bufs++ = *bufe; - *bufe-- = c; - } - rb_str_buf_cat(res, RSTRING_PTR(buf), RSTRING_LEN(buf)); - } - else { - c = 0; - rb_str_buf_cat(res, &c, sizeof(char)); - } - } - break; - - default: - rb_warning("unknown pack directive '%c' in '%s'", - type, RSTRING_PTR(fmt)); - break; - } + } + if (len <= 2) + len = 45; + else if (len > 63 && type == 'u') + len = 63; + else + len = len / 3 * 3; + while (plen > 0) { + long todo; + + if (plen > len) + todo = len; + else + todo = plen; + encodes(res, 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(res, from, len); + break; + + case 'P': /* pointer to packed byte string */ + from = THISFROM; + if (!NIL_P(from)) { + StringValue(from); + if (RSTRING_LEN(from) < len) { + rb_raise(rb_eArgError, "too short buffer for P(%ld for %ld)", + RSTRING_LEN(from), len); + } + } + len = 1; + /* FALL THROUGH */ + case 'p': /* pointer to string */ + while (len-- > 0) { + char *t; + from = NEXTFROM; + if (NIL_P(from)) { + t = 0; + } + else { + t = StringValuePtr(from); + } + if (!associates) { + associates = rb_ary_new(); + } + rb_ary_push(associates, from); + rb_str_buf_cat(res, (char*)&t, sizeof(char*)); + } + break; + + case 'w': /* BER compressed integer */ + while (len-- > 0) { + VALUE buf; + size_t numbytes; + int sign; + char *cp; + + from = NEXTFROM; + from = rb_to_int(from); + numbytes = rb_absint_numwords(from, 7, NULL); + if (numbytes == 0) + numbytes = 1; + buf = rb_str_new(NULL, numbytes); + + sign = rb_integer_pack(from, RSTRING_PTR(buf), RSTRING_LEN(buf), 1, 1, INTEGER_PACK_BIG_ENDIAN); + + if (sign < 0) + rb_raise(rb_eArgError, "can't compress negative numbers"); + if (sign == 2) + rb_bug("buffer size problem?"); + + cp = RSTRING_PTR(buf); + while (1 < numbytes) { + *cp |= 0x80; + cp++; + numbytes--; + } + + rb_str_buf_cat(res, RSTRING_PTR(buf), RSTRING_LEN(buf)); + } + break; + + default: { + unknown_directive("pack", type, fmt); + break; + } + } } if (associates) { - str_associate(res, associates); + str_associate(res, associates); } - OBJ_INFECT(res, fmt); switch (enc_info) { case 1: - ENCODING_CODERANGE_SET(res, rb_usascii_encindex(), ENC_CODERANGE_7BIT); - break; + ENCODING_CODERANGE_SET(res, rb_usascii_encindex(), ENC_CODERANGE_7BIT); + break; case 2: - rb_enc_set_index(res, rb_utf8_encindex()); - break; + rb_enc_set_index(res, rb_utf8_encindex()); + break; default: - /* do nothing, keep ASCII-8BIT */ - break; + /* do nothing, keep ASCII-8BIT */ + break; } return res; } +VALUE +rb_ec_pack_ary(rb_execution_context_t *ec, VALUE ary, VALUE fmt, VALUE buffer) +{ + return pack_pack(ec, ary, fmt, buffer); +} + static const char uu_table[] = "`!\"#$%&'()*+,-./0123456789:;<=>?@ABCDEFGHIJKLMNOPQRSTUVWXYZ[\\]^_"; static const char b64_table[] = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/"; static void -encodes(VALUE str, const char *s, long len, int type, int tail_lf) +encodes(VALUE str, const char *s0, long len, int type, int tail_lf) { - char buff[4096]; + enum {buff_size = 4096, encoded_unit = 4, input_unit = 3}; + char buff[buff_size + 1]; /* +1 for tail_lf */ long i = 0; - const char *trans = type == 'u' ? uu_table : b64_table; + const char *const trans = type == 'u' ? uu_table : b64_table; char padding; + const unsigned char *s = (const unsigned char *)s0; if (type == 'u') { - buff[i++] = (char)len + ' '; - padding = '`'; + buff[i++] = (char)len + ' '; + padding = '`'; } else { - padding = '='; + padding = '='; } - while (len >= 3) { - while (len >= 3 && sizeof(buff)-i >= 4) { + while (len >= input_unit) { + while (len >= input_unit && buff_size-i >= encoded_unit) { buff[i++] = trans[077 & (*s >> 2)]; buff[i++] = trans[077 & (((*s << 4) & 060) | ((s[1] >> 4) & 017))]; buff[i++] = trans[077 & (((s[1] << 2) & 074) | ((s[2] >> 6) & 03))]; buff[i++] = trans[077 & s[2]]; - s += 3; - len -= 3; + s += input_unit; + len -= input_unit; } - if (sizeof(buff)-i < 4) { + if (buff_size-i < encoded_unit) { rb_str_buf_cat(str, buff, i); i = 0; } } if (len == 2) { - buff[i++] = trans[077 & (*s >> 2)]; - buff[i++] = trans[077 & (((*s << 4) & 060) | ((s[1] >> 4) & 017))]; - buff[i++] = trans[077 & (((s[1] << 2) & 074) | (('\0' >> 6) & 03))]; - buff[i++] = padding; + buff[i++] = trans[077 & (*s >> 2)]; + buff[i++] = trans[077 & (((*s << 4) & 060) | ((s[1] >> 4) & 017))]; + buff[i++] = trans[077 & (((s[1] << 2) & 074) | (('\0' >> 6) & 03))]; + buff[i++] = padding; } else if (len == 1) { - buff[i++] = trans[077 & (*s >> 2)]; - buff[i++] = trans[077 & (((*s << 4) & 060) | (('\0' >> 4) & 017))]; - buff[i++] = padding; - buff[i++] = padding; + buff[i++] = trans[077 & (*s >> 2)]; + buff[i++] = trans[077 & (((*s << 4) & 060) | (('\0' >> 4) & 017))]; + buff[i++] = padding; + buff[i++] = padding; } if (tail_lf) buff[i++] = '\n'; rb_str_buf_cat(str, buff, i); + if ((size_t)i > sizeof(buff)) rb_bug("encodes() buffer overrun"); } static const char hex_table[] = "0123456789ABCDEF"; @@ -1143,1094 +862,786 @@ qpencode(VALUE str, VALUE from, long len) while (s < send) { if ((*s > 126) || - (*s < 32 && *s != '\n' && *s != '\t') || - (*s == '=')) { - buff[i++] = '='; - buff[i++] = hex_table[*s >> 4]; - buff[i++] = hex_table[*s & 0x0f]; + (*s < 32 && *s != '\n' && *s != '\t') || + (*s == '=')) { + buff[i++] = '='; + buff[i++] = hex_table[*s >> 4]; + buff[i++] = hex_table[*s & 0x0f]; n += 3; prev = EOF; } - else if (*s == '\n') { + else if (*s == '\n') { if (prev == ' ' || prev == '\t') { - buff[i++] = '='; - buff[i++] = *s; + buff[i++] = '='; + buff[i++] = *s; } - buff[i++] = *s; + buff[i++] = *s; n = 0; prev = *s; } - else { - buff[i++] = *s; + else { + buff[i++] = *s; n++; prev = *s; } if (n > len) { - buff[i++] = '='; - buff[i++] = '\n'; + buff[i++] = '='; + buff[i++] = '\n'; n = 0; prev = '\n'; } - if (i > 1024 - 5) { - rb_str_buf_cat(str, buff, i); - i = 0; - } - s++; + if (i > 1024 - 5) { + rb_str_buf_cat(str, buff, i); + i = 0; + } + s++; } if (n > 0) { - buff[i++] = '='; - buff[i++] = '\n'; + buff[i++] = '='; + buff[i++] = '\n'; } if (i > 0) { - rb_str_buf_cat(str, buff, i); + rb_str_buf_cat(str, buff, i); } } static inline int hex2num(char c) { - switch (c) { - case '0': case '1': case '2': case '3': case '4': - case '5': case '6': case '7': case '8': case '9': - return c - '0'; - case 'a': case 'b': case 'c': - case 'd': case 'e': case 'f': - return c - 'a' + 10; - case 'A': case 'B': case 'C': - case 'D': case 'E': case 'F': - return c - 'A' + 10; - default: - return -1; - } + int n; + n = ruby_digit36_to_number_table[(unsigned char)c]; + if (16 <= n) + n = -1; + return n; } #define PACK_LENGTH_ADJUST_SIZE(sz) do { \ tmp_len = 0; \ if (len > (long)((send-s)/(sz))) { \ if (!star) { \ - tmp_len = len-(send-s)/(sz); \ + tmp_len = len-(send-s)/(sz); \ } \ - len = (send-s)/(sz); \ + len = (send-s)/(sz); \ } \ } while (0) #define PACK_ITEM_ADJUST() do { \ - if (tmp_len > 0 && !block_p) \ - rb_ary_store(ary, RARRAY_LEN(ary)+tmp_len-1, Qnil); \ + if (tmp_len > 0 && mode == UNPACK_ARRAY) \ + rb_ary_store(ary, RARRAY_LEN(ary)+tmp_len-1, Qnil); \ } while (0) -static VALUE -infected_str_new(const char *ptr, long len, VALUE str) -{ - VALUE s = rb_str_new(ptr, len); - - OBJ_INFECT(s, str); - return s; -} - -/* - * call-seq: - * str.unpack(format) -> anArray - * - * Decodes <i>str</i> (which may contain binary data) according to the - * format string, returning an array of each value extracted. The - * format string consists of a sequence of single-character directives, - * summarized in the table at the end of this entry. - * Each directive may be followed - * by a number, indicating the number of times to repeat with this - * directive. An asterisk (``<code>*</code>'') will use up all - * remaining elements. The directives <code>sSiIlL</code> may each 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, it uses a - * platform-independent consistent size. Spaces are ignored in the - * format string. See also <code>Array#pack</code>. - * - * "abc \0\0abc \0\0".unpack('A6Z6') #=> ["abc", "abc "] - * "abc \0\0".unpack('a3a3') #=> ["abc", " \000\000"] - * "abc \0abc \0".unpack('Z*Z*') #=> ["abc ", "abc "] - * "aa".unpack('b8B8') #=> ["10000110", "01100001"] - * "aaa".unpack('h2H2c') #=> ["16", "61", 97] - * "\xfe\xff\xfe\xff".unpack('sS') #=> [-2, 65534] - * "now=20is".unpack('M*') #=> ["now is"] - * "whole".unpack('xax2aX2aX1aX2a') #=> ["h", "e", "l", "l", "o"] - * - * This table summarizes the various formats and the Ruby classes - * returned by each. - * - * Integer | | - * Directive | Returns | Meaning - * ----------------------------------------------------------------- - * C | Integer | 8-bit unsigned (unsigned char) - * S | Integer | 16-bit unsigned, native endian (uint16_t) - * L | Integer | 32-bit unsigned, native endian (uint32_t) - * Q | Integer | 64-bit unsigned, native endian (uint64_t) - * | | - * c | Integer | 8-bit signed (signed char) - * s | Integer | 16-bit signed, native endian (int16_t) - * l | Integer | 32-bit signed, native endian (int32_t) - * q | Integer | 64-bit signed, 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 - * | | - * S> L> Q> | Integer | same as the directives without ">" except - * s> l> q> | | big endian - * S!> I!> | | (available since Ruby 1.9.3) - * L!> Q!> | | "S>" is same as "n" - * s!> i!> | | "L>" is same as "N" - * l!> q!> | | - * | | - * S< L< Q< | Integer | same as the directives without "<" except - * s< l< q< | | little endian - * S!< I!< | | (available since Ruby 1.9.3) - * L!< Q!< | | "S<" is same as "v" - * s!< i!< | | "L<" is same as "V" - * l!< q!< | | - * | | - * n | Integer | 16-bit unsigned, network (big-endian) byte order - * N | Integer | 32-bit unsigned, network (big-endian) byte order - * v | Integer | 16-bit unsigned, VAX (little-endian) byte order - * V | Integer | 32-bit unsigned, VAX (little-endian) byte order - * | | - * U | Integer | UTF-8 character - * w | Integer | BER-compressed integer (see Array.pack) - * - * Float | | - * Directive | Returns | Meaning - * ----------------------------------------------------------------- - * D, d | Float | double-precision, native format - * F, f | Float | single-precision, native format - * E | Float | double-precision, little-endian byte order - * e | Float | single-precision, little-endian byte order - * G | Float | double-precision, network (big-endian) byte order - * g | Float | single-precision, network (big-endian) byte order - * - * String | | - * Directive | Returns | Meaning - * ----------------------------------------------------------------- - * A | String | arbitrary binary string (remove trailing nulls and ASCII spaces) - * a | String | arbitrary binary string - * Z | String | null-terminated string - * 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 (RFC 2045) (default) - * | | base64 encoded string (RFC 4648) if followed by 0 - * P | String | pointer to a structure (fixed-length string) - * p | String | pointer to a null-terminated string - * - * Misc. | | - * Directive | Returns | Meaning - * ----------------------------------------------------------------- - * @ | --- | skip to the offset given by the length argument - * X | --- | skip backward one byte - * x | --- | skip forward one byte +/* Workaround for Oracle Developer Studio (Oracle Solaris Studio) + * 12.4/12.5/12.6 C compiler optimization bug + * with "-xO4" optimization option. */ +#if defined(__SUNPRO_C) && 0x5130 <= __SUNPRO_C && __SUNPRO_C <= 0x5150 +# define AVOID_CC_BUG volatile +#else +# define AVOID_CC_BUG +#endif + +enum unpack_mode { + UNPACK_ARRAY, + UNPACK_BLOCK, + UNPACK_1 +}; static VALUE -pack_unpack(VALUE str, VALUE fmt) +pack_unpack_internal(VALUE str, VALUE fmt, enum unpack_mode mode, long offset) { - static const char hexdigits[] = "0123456789abcdef"; +#define hexdigits ruby_hexdigits char *s, *send; char *p, *pend; - VALUE ary; - char type; - long len, tmp_len; - int star; -#ifdef NATINT_PACK - int natint; /* native integer */ -#endif - int block_p = rb_block_given_p(); + VALUE ary, associates = Qfalse; + long len; + AVOID_CC_BUG long tmp_len; int signed_p, integer_size, bigendian_p; #define UNPACK_PUSH(item) do {\ - VALUE item_val = (item);\ - if (block_p) {\ - rb_yield(item_val);\ - }\ - else {\ - rb_ary_push(ary, item_val);\ - }\ + VALUE item_val = (item);\ + if ((mode) == UNPACK_BLOCK) {\ + rb_yield(item_val);\ + }\ + else if ((mode) == UNPACK_ARRAY) {\ + rb_ary_push(ary, item_val);\ + }\ + else /* if ((mode) == UNPACK_1) { */ {\ + return item_val; \ + }\ } while (0) StringValue(str); StringValue(fmt); + rb_must_asciicompat(fmt); + + if (offset < 0) rb_raise(rb_eArgError, "offset can't be negative"); + len = RSTRING_LEN(str); + if (offset > len) rb_raise(rb_eArgError, "offset outside of string"); + s = RSTRING_PTR(str); - send = s + RSTRING_LEN(str); + send = s + len; + s += offset; + p = RSTRING_PTR(fmt); pend = p + RSTRING_LEN(fmt); - ary = block_p ? Qnil : rb_ary_new(); +#define UNPACK_FETCH(var, type) (memcpy((var), s, sizeof(type)), s += sizeof(type)) + + ary = mode == UNPACK_ARRAY ? rb_ary_new() : Qnil; while (p < pend) { - int explicit_endian = 0; - type = *p++; + int explicit_endian = 0; + const char type = *p++; #ifdef NATINT_PACK - natint = 0; + int natint = 0; /* native integer */ #endif + int star = 0; - if (ISSPACE(type)) continue; - if (type == '#') { - while ((p < pend) && (*p != '\n')) { - p++; - } - continue; - } - - star = 0; - { - static const char natstr[] = "sSiIlL"; - static const char endstr[] = "sSiIlLqQ"; - - modifiers: - switch (*p) { - case '_': - case '!': - - if (strchr(natstr, type)) { -#ifdef NATINT_PACK - natint = 1; -#endif - p++; - } - else { - rb_raise(rb_eArgError, "'%c' allowed only after types %s", *p, natstr); - } - goto modifiers; - - case '<': - case '>': - if (!strchr(endstr, type)) { - rb_raise(rb_eArgError, "'%c' allowed only after types %s", *p, endstr); - } - if (explicit_endian) { - rb_raise(rb_eRangeError, "Can't use both '<' and '>'"); - } - explicit_endian = *p++; - goto modifiers; - } - } - - if (p >= pend) - len = 1; - else if (*p == '*') { - star = 1; - len = send - s; - 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 = (type != '@'); - } - - switch (type) { - case '%': - rb_raise(rb_eArgError, "%% is not supported"); - break; - - case 'A': - if (len > send - s) len = send - s; - { - long end = len; - char *t = s + len - 1; - - while (t >= s) { - if (*t != ' ' && *t != '\0') break; - t--; len--; - } - UNPACK_PUSH(infected_str_new(s, len, str)); - s += end; - } - break; - - case 'Z': - { - char *t = s; - - if (len > send-s) len = send-s; - while (t < s+len && *t) t++; - UNPACK_PUSH(infected_str_new(s, t-s, str)); - if (t < send) t++; - s = star ? t : s+len; - } - break; - - case 'a': - if (len > send - s) len = send - s; - UNPACK_PUSH(infected_str_new(s, len, str)); - s += len; - break; - - case 'b': - { - VALUE bitstr; - char *t; - int bits; - long i; - - if (p[-1] == '*' || len > (send - s) * 8) - len = (send - s) * 8; - bits = 0; - UNPACK_PUSH(bitstr = rb_usascii_str_new(0, len)); - t = RSTRING_PTR(bitstr); - for (i=0; i<len; i++) { - if (i & 7) bits >>= 1; - else bits = *s++; - *t++ = (bits & 1) ? '1' : '0'; - } - } - break; - - case 'B': - { - VALUE bitstr; - char *t; - int bits; - long i; - - if (p[-1] == '*' || len > (send - s) * 8) - len = (send - s) * 8; - bits = 0; - UNPACK_PUSH(bitstr = rb_usascii_str_new(0, len)); - t = RSTRING_PTR(bitstr); - for (i=0; i<len; i++) { - if (i & 7) bits <<= 1; - else bits = *s++; - *t++ = (bits & 128) ? '1' : '0'; - } - } - break; - - case 'h': - { - VALUE bitstr; - char *t; - int bits; - long i; - - if (p[-1] == '*' || len > (send - s) * 2) - len = (send - s) * 2; - bits = 0; - UNPACK_PUSH(bitstr = rb_usascii_str_new(0, len)); - t = RSTRING_PTR(bitstr); - for (i=0; i<len; i++) { - if (i & 1) - bits >>= 4; - else - bits = *s++; - *t++ = hexdigits[bits & 15]; - } - } - break; - - case 'H': - { - VALUE bitstr; - char *t; - int bits; - long i; - - if (p[-1] == '*' || len > (send - s) * 2) - len = (send - s) * 2; - bits = 0; - UNPACK_PUSH(bitstr = rb_usascii_str_new(0, len)); - t = RSTRING_PTR(bitstr); - for (i=0; i<len; i++) { - if (i & 1) - bits <<= 4; - else - bits = *s++; - *t++ = hexdigits[(bits >> 4) & 15]; - } - } - break; - - case 'c': - PACK_LENGTH_ADJUST_SIZE(sizeof(char)); - while (len-- > 0) { - int c = *s++; - if (c > (char)127) c-=256; - UNPACK_PUSH(INT2FIX(c)); - } - PACK_ITEM_ADJUST(); - break; - - case 'C': - PACK_LENGTH_ADJUST_SIZE(sizeof(unsigned char)); - while (len-- > 0) { - unsigned char c = *s++; - UNPACK_PUSH(INT2FIX(c)); - } - PACK_ITEM_ADJUST(); - break; - - case 's': - signed_p = 1; - integer_size = NATINT_LEN(short, 2); - bigendian_p = BIGENDIAN_P(); - goto unpack_integer; - - case 'S': - signed_p = 0; - integer_size = NATINT_LEN(short, 2); - bigendian_p = BIGENDIAN_P(); - goto unpack_integer; - - case 'i': - signed_p = 1; - integer_size = (int)sizeof(int); - bigendian_p = BIGENDIAN_P(); - goto unpack_integer; - - case 'I': - signed_p = 0; - integer_size = (int)sizeof(int); - bigendian_p = BIGENDIAN_P(); - goto unpack_integer; - - case 'l': - signed_p = 1; - integer_size = NATINT_LEN(long, 4); - bigendian_p = BIGENDIAN_P(); - goto unpack_integer; - - case 'L': - signed_p = 0; - integer_size = NATINT_LEN(long, 4); - bigendian_p = BIGENDIAN_P(); - goto unpack_integer; - - case 'q': - signed_p = 1; - integer_size = 8; - bigendian_p = BIGENDIAN_P(); - goto unpack_integer; - - case 'Q': - signed_p = 0; - integer_size = 8; - bigendian_p = BIGENDIAN_P(); - goto unpack_integer; - - case 'n': - signed_p = 0; - integer_size = 2; - bigendian_p = 1; - goto unpack_integer; - - case 'N': - signed_p = 0; - integer_size = 4; - bigendian_p = 1; - goto unpack_integer; - - case 'v': - signed_p = 0; - integer_size = 2; - bigendian_p = 0; - goto unpack_integer; - - case 'V': - signed_p = 0; - integer_size = 4; - bigendian_p = 0; - goto unpack_integer; - - unpack_integer: - if (explicit_endian) { - bigendian_p = explicit_endian == '>'; - } - - switch (integer_size) { -#if defined(HAVE_INT16_T) && !defined(FORCE_BIG_PACK) - case SIZEOF_INT16_T: - if (signed_p) { - PACK_LENGTH_ADJUST_SIZE(sizeof(int16_t)); - while (len-- > 0) { - union { - int16_t i; - char a[sizeof(int16_t)]; - } v; - memcpy(v.a, s, sizeof(int16_t)); - if (bigendian_p != BIGENDIAN_P()) v.i = swap16(v.i); - s += sizeof(int16_t); - UNPACK_PUSH(INT2FIX(v.i)); - } - PACK_ITEM_ADJUST(); - } - else { - PACK_LENGTH_ADJUST_SIZE(sizeof(uint16_t)); - while (len-- > 0) { - union { - uint16_t i; - char a[sizeof(uint16_t)]; - } v; - memcpy(v.a, s, sizeof(uint16_t)); - if (bigendian_p != BIGENDIAN_P()) v.i = swap16(v.i); - s += sizeof(uint16_t); - UNPACK_PUSH(INT2FIX(v.i)); - } - PACK_ITEM_ADJUST(); - } - break; -#endif + if (skip_blank(p, type)) continue; + p = pack_modifiers(p, type, &natint, &explicit_endian); -#if defined(HAVE_INT32_T) && !defined(FORCE_BIG_PACK) - case SIZEOF_INT32_T: - if (signed_p) { - PACK_LENGTH_ADJUST_SIZE(sizeof(int32_t)); - while (len-- > 0) { - union { - int32_t i; - char a[sizeof(int32_t)]; - } v; - memcpy(v.a, s, sizeof(int32_t)); - if (bigendian_p != BIGENDIAN_P()) v.i = swap32(v.i); - s += sizeof(int32_t); - UNPACK_PUSH(INT2NUM(v.i)); - } - PACK_ITEM_ADJUST(); - } - else { - PACK_LENGTH_ADJUST_SIZE(sizeof(uint32_t)); - while (len-- > 0) { - union { - uint32_t i; - char a[sizeof(uint32_t)]; - } v; - memcpy(v.a, s, sizeof(uint32_t)); - if (bigendian_p != BIGENDIAN_P()) v.i = swap32(v.i); - s += sizeof(uint32_t); - UNPACK_PUSH(UINT2NUM(v.i)); - } - PACK_ITEM_ADJUST(); - } - break; -#endif + if (p >= pend) + len = 1; + else if (*p == '*') { + star = 1; + len = send - s; + p++; + } + else if (ISDIGIT(*p)) { + errno = 0; + len = STRTOUL(p, (char**)&p, 10); + if (len < 0 || errno) { + rb_raise(rb_eRangeError, "pack length too big"); + } + } + else { + len = (type != '@'); + } -#if defined(HAVE_INT64_T) && !defined(FORCE_BIG_PACK) - case SIZEOF_INT64_T: - if (signed_p) { - PACK_LENGTH_ADJUST_SIZE(sizeof(int64_t)); - while (len-- > 0) { - union { - int64_t i; - char a[sizeof(int64_t)]; - } v; - memcpy(v.a, s, sizeof(int64_t)); - if (bigendian_p != BIGENDIAN_P()) v.i = swap64(v.i); - s += sizeof(int64_t); - UNPACK_PUSH(INT64toNUM(v.i)); - } - PACK_ITEM_ADJUST(); - } - else { - PACK_LENGTH_ADJUST_SIZE(sizeof(uint64_t)); - while (len-- > 0) { - union { - uint64_t i; - char a[sizeof(uint64_t)]; - } v; - memcpy(v.a, s, sizeof(uint64_t)); - if (bigendian_p != BIGENDIAN_P()) v.i = swap64(v.i); - s += sizeof(uint64_t); - UNPACK_PUSH(UINT64toNUM(v.i)); - } - PACK_ITEM_ADJUST(); - } - break; -#endif + switch (type) { + case '%': + rb_raise(rb_eArgError, "%% is not supported"); + break; - default: - if (integer_size > MAX_INTEGER_PACK_SIZE) - rb_bug("unexpected integer size for pack: %d", integer_size); - PACK_LENGTH_ADJUST_SIZE(integer_size); - while (len-- > 0) { - union { - unsigned long i[(MAX_INTEGER_PACK_SIZE+SIZEOF_LONG)/SIZEOF_LONG]; - char a[(MAX_INTEGER_PACK_SIZE+SIZEOF_LONG)/SIZEOF_LONG*SIZEOF_LONG]; - } v; - int num_longs = (integer_size+SIZEOF_LONG)/SIZEOF_LONG; - int i; + case 'A': + if (len > send - s) len = send - s; + { + long end = len; + char *t = s + len - 1; + + while (t >= s) { + if (*t != ' ' && *t != '\0') break; + t--; len--; + } + UNPACK_PUSH(rb_str_new(s, len)); + s += end; + } + break; + + case 'Z': + { + char *t = s; + + if (len > send-s) len = send-s; + while (t < s+len && *t) t++; + UNPACK_PUSH(rb_str_new(s, t-s)); + if (t < send) t++; + s = star ? t : s+len; + } + break; + + case 'a': + if (len > send - s) len = send - s; + UNPACK_PUSH(rb_str_new(s, len)); + s += len; + break; + + case 'b': + { + VALUE bitstr; + char *t; + int bits; + long i; + + if (p[-1] == '*' || len > (send - s) * 8) + len = (send - s) * 8; + bits = 0; + bitstr = rb_usascii_str_new(0, len); + t = RSTRING_PTR(bitstr); + for (i=0; i<len; i++) { + if (i & 7) bits >>= 1; + else bits = (unsigned char)*s++; + *t++ = (bits & 1) ? '1' : '0'; + } + UNPACK_PUSH(bitstr); + } + break; + + case 'B': + { + VALUE bitstr; + char *t; + int bits; + long i; + + if (p[-1] == '*' || len > (send - s) * 8) + len = (send - s) * 8; + bits = 0; + bitstr = rb_usascii_str_new(0, len); + t = RSTRING_PTR(bitstr); + for (i=0; i<len; i++) { + if (i & 7) bits <<= 1; + else bits = (unsigned char)*s++; + *t++ = (bits & 128) ? '1' : '0'; + } + UNPACK_PUSH(bitstr); + } + break; - if (signed_p && (signed char)s[bigendian_p ? 0 : (integer_size-1)] < 0) - memset(v.a, 0xff, sizeof(long)*num_longs); + case 'h': + { + VALUE bitstr; + char *t; + int bits; + long i; + + if (p[-1] == '*' || len > (send - s) * 2) + len = (send - s) * 2; + bits = 0; + bitstr = rb_usascii_str_new(0, len); + t = RSTRING_PTR(bitstr); + for (i=0; i<len; i++) { + if (i & 1) + bits >>= 4; else - memset(v.a, 0, sizeof(long)*num_longs); - if (bigendian_p) - memcpy(v.a + sizeof(long)*num_longs - integer_size, s, integer_size); + bits = (unsigned char)*s++; + *t++ = hexdigits[bits & 15]; + } + UNPACK_PUSH(bitstr); + } + break; + + case 'H': + { + VALUE bitstr; + char *t; + int bits; + long i; + + if (p[-1] == '*' || len > (send - s) * 2) + len = (send - s) * 2; + bits = 0; + bitstr = rb_usascii_str_new(0, len); + t = RSTRING_PTR(bitstr); + for (i=0; i<len; i++) { + if (i & 1) + bits <<= 4; else - memcpy(v.a, s, integer_size); - 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; + bits = (unsigned char)*s++; + *t++ = hexdigits[(bits >> 4) & 15]; + } + UNPACK_PUSH(bitstr); + } + break; + + case 'c': + signed_p = 1; + integer_size = 1; + bigendian_p = BIGENDIAN_P(); /* not effective */ + goto unpack_integer; + + case 'C': + signed_p = 0; + integer_size = 1; + bigendian_p = BIGENDIAN_P(); /* not effective */ + goto unpack_integer; + + case 's': + signed_p = 1; + integer_size = NATINT_LEN(short, 2); + bigendian_p = BIGENDIAN_P(); + goto unpack_integer; + + case 'S': + signed_p = 0; + integer_size = NATINT_LEN(short, 2); + bigendian_p = BIGENDIAN_P(); + goto unpack_integer; + + case 'i': + signed_p = 1; + integer_size = (int)sizeof(int); + bigendian_p = BIGENDIAN_P(); + goto unpack_integer; + + case 'I': + signed_p = 0; + integer_size = (int)sizeof(int); + bigendian_p = BIGENDIAN_P(); + goto unpack_integer; + + case 'l': + signed_p = 1; + integer_size = NATINT_LEN(long, 4); + bigendian_p = BIGENDIAN_P(); + goto unpack_integer; + + case 'L': + signed_p = 0; + integer_size = NATINT_LEN(long, 4); + bigendian_p = BIGENDIAN_P(); + goto unpack_integer; + + case 'q': + signed_p = 1; + integer_size = NATINT_LEN_Q; + bigendian_p = BIGENDIAN_P(); + goto unpack_integer; + + case 'Q': + signed_p = 0; + integer_size = NATINT_LEN_Q; + bigendian_p = BIGENDIAN_P(); + goto unpack_integer; + + case 'j': + signed_p = 1; + integer_size = sizeof(intptr_t); + bigendian_p = BIGENDIAN_P(); + goto unpack_integer; + + case 'J': + signed_p = 0; + integer_size = sizeof(uintptr_t); + bigendian_p = BIGENDIAN_P(); + goto unpack_integer; + + case 'n': + signed_p = 0; + integer_size = 2; + bigendian_p = 1; + goto unpack_integer; + + case 'N': + signed_p = 0; + integer_size = 4; + bigendian_p = 1; + goto unpack_integer; + + case 'v': + signed_p = 0; + integer_size = 2; + bigendian_p = 0; + goto unpack_integer; + + case 'V': + signed_p = 0; + integer_size = 4; + bigendian_p = 0; + goto unpack_integer; + + unpack_integer: + if (explicit_endian) { + bigendian_p = explicit_endian == '>'; + } + PACK_LENGTH_ADJUST_SIZE(integer_size); + while (len-- > 0) { + int flags = bigendian_p ? INTEGER_PACK_BIG_ENDIAN : INTEGER_PACK_LITTLE_ENDIAN; + VALUE val; + if (signed_p) + flags |= INTEGER_PACK_2COMP; + val = rb_integer_unpack(s, integer_size, 1, 0, flags); + UNPACK_PUSH(val); + s += integer_size; + } + PACK_ITEM_ADJUST(); + break; + + case 'f': + case 'F': + PACK_LENGTH_ADJUST_SIZE(sizeof(float)); + while (len-- > 0) { + float tmp; + UNPACK_FETCH(&tmp, float); + UNPACK_PUSH(DBL2NUM((double)tmp)); + } + PACK_ITEM_ADJUST(); + break; + + case 'e': + PACK_LENGTH_ADJUST_SIZE(sizeof(float)); + while (len-- > 0) { + FLOAT_CONVWITH(tmp); + UNPACK_FETCH(tmp.buf, float); + VTOHF(tmp); + UNPACK_PUSH(DBL2NUM(tmp.f)); + } + PACK_ITEM_ADJUST(); + break; + + case 'E': + PACK_LENGTH_ADJUST_SIZE(sizeof(double)); + while (len-- > 0) { + DOUBLE_CONVWITH(tmp); + UNPACK_FETCH(tmp.buf, double); + VTOHD(tmp); + UNPACK_PUSH(DBL2NUM(tmp.d)); + } + PACK_ITEM_ADJUST(); + break; + + case 'D': + case 'd': + PACK_LENGTH_ADJUST_SIZE(sizeof(double)); + while (len-- > 0) { + double tmp; + UNPACK_FETCH(&tmp, double); + UNPACK_PUSH(DBL2NUM(tmp)); + } + PACK_ITEM_ADJUST(); + break; + + case 'g': + PACK_LENGTH_ADJUST_SIZE(sizeof(float)); + while (len-- > 0) { + FLOAT_CONVWITH(tmp); + UNPACK_FETCH(tmp.buf, float); + NTOHF(tmp); + UNPACK_PUSH(DBL2NUM(tmp.f)); + } + PACK_ITEM_ADJUST(); + break; + + case 'G': + PACK_LENGTH_ADJUST_SIZE(sizeof(double)); + while (len-- > 0) { + DOUBLE_CONVWITH(tmp); + UNPACK_FETCH(tmp.buf, double); + NTOHD(tmp); + UNPACK_PUSH(DBL2NUM(tmp.d)); + } + PACK_ITEM_ADJUST(); + break; + + case 'U': + if (len > send - s) len = send - s; + while (len > 0 && s < send) { + long alen = send - s; + unsigned long l; + + l = utf8_to_uv(s, &alen); + s += alen; len--; + UNPACK_PUSH(ULONG2NUM(l)); + } + break; + + case 'u': + { + VALUE buf = rb_str_new(0, (send - s)*3/4); + char *ptr = RSTRING_PTR(buf); + long total = 0; + + while (s < send && (unsigned char)*s > ' ' && (unsigned char)*s < 'a') { + long a,b,c,d; + char hunk[3]; + + len = ((unsigned char)*s++ - ' ') & 077; + + total += len; + if (total > RSTRING_LEN(buf)) { + len -= total - RSTRING_LEN(buf); + total = RSTRING_LEN(buf); + } + + while (len > 0) { + long mlen = len > 3 ? 3 : len; + + if (s < send && (unsigned char)*s >= ' ' && (unsigned char)*s < 'a') + a = ((unsigned char)*s++ - ' ') & 077; + else + a = 0; + if (s < send && (unsigned char)*s >= ' ' && (unsigned char)*s < 'a') + b = ((unsigned char)*s++ - ' ') & 077; + else + b = 0; + if (s < send && (unsigned char)*s >= ' ' && (unsigned char)*s < 'a') + c = ((unsigned char)*s++ - ' ') & 077; + else + c = 0; + if (s < send && (unsigned char)*s >= ' ' && (unsigned char)*s < 'a') + d = ((unsigned char)*s++ - ' ') & 077; + else + d = 0; + hunk[0] = (char)(a << 2 | b >> 4); + hunk[1] = (char)(b << 4 | c >> 2); + hunk[2] = (char)(c << 6 | d); + memcpy(ptr, hunk, mlen); + ptr += mlen; + len -= mlen; + } + if (s < send && (unsigned char)*s != '\r' && *s != '\n') + s++; /* possible checksum byte */ + if (s < send && *s == '\r') s++; + if (s < send && *s == '\n') s++; + } + + rb_str_set_len(buf, total); + UNPACK_PUSH(buf); + } + break; + + case 'm': + { + VALUE buf = rb_str_new(0, (send - s + 3)*3/4); /* +3 is for skipping paddings */ + char *ptr = RSTRING_PTR(buf); + int a = -1,b = -1,c = 0,d = 0; + static signed char b64_xtable[256]; + + if (b64_xtable['/'] <= 0) { + int i; + + for (i = 0; i < 256; i++) { + b64_xtable[i] = -1; + } + for (i = 0; i < 64; i++) { + b64_xtable[(unsigned char)b64_table[i]] = (char)i; + } + } + if (len == 0) { + while (s < send) { + a = b = c = d = -1; + a = b64_xtable[(unsigned char)*s++]; + if (s >= send || a == -1) rb_raise(rb_eArgError, "invalid base64"); + b = b64_xtable[(unsigned char)*s++]; + if (s >= send || b == -1) rb_raise(rb_eArgError, "invalid base64"); + if (*s == '=') { + if (s + 2 == send && *(s + 1) == '=') break; + rb_raise(rb_eArgError, "invalid base64"); + } + c = b64_xtable[(unsigned char)*s++]; + if (s >= send || c == -1) rb_raise(rb_eArgError, "invalid base64"); + if (s + 1 == send && *s == '=') break; + d = b64_xtable[(unsigned char)*s++]; + if (d == -1) rb_raise(rb_eArgError, "invalid base64"); + *ptr++ = castchar(a << 2 | b >> 4); + *ptr++ = castchar(b << 4 | c >> 2); + *ptr++ = castchar(c << 6 | d); + } + if (c == -1) { + *ptr++ = castchar(a << 2 | b >> 4); + if (b & 0xf) rb_raise(rb_eArgError, "invalid base64"); + } + else if (d == -1) { + *ptr++ = castchar(a << 2 | b >> 4); + *ptr++ = castchar(b << 4 | c >> 2); + if (c & 0x3) rb_raise(rb_eArgError, "invalid base64"); + } + } + else { + while (s < send) { + a = b = c = d = -1; + while ((a = b64_xtable[(unsigned char)*s]) == -1 && s < send) {s++;} + if (s >= send) break; + s++; + while ((b = b64_xtable[(unsigned char)*s]) == -1 && s < send) {s++;} + if (s >= send) break; + s++; + while ((c = b64_xtable[(unsigned char)*s]) == -1 && s < send) {if (*s == '=') break; s++;} + if (*s == '=' || s >= send) break; + s++; + while ((d = b64_xtable[(unsigned char)*s]) == -1 && s < send) {if (*s == '=') break; s++;} + if (*s == '=' || s >= send) break; + s++; + *ptr++ = castchar(a << 2 | b >> 4); + *ptr++ = castchar(b << 4 | c >> 2); + *ptr++ = castchar(c << 6 | d); + a = -1; + } + if (a != -1 && b != -1) { + if (c == -1) + *ptr++ = castchar(a << 2 | b >> 4); + else { + *ptr++ = castchar(a << 2 | b >> 4); + *ptr++ = castchar(b << 4 | c >> 2); + } + } + } + rb_str_set_len(buf, ptr - RSTRING_PTR(buf)); + UNPACK_PUSH(buf); + } + break; + + case 'M': + { + VALUE buf = rb_str_new(0, send - s); + char *ptr = RSTRING_PTR(buf), *ss = s; + int csum = 0; + int c1, c2; + + while (s < send) { + if (*s == '=') { + if (++s == send) break; + if (s+1 < send && *s == '\r' && *(s+1) == '\n') + s++; + if (*s != '\n') { + if ((c1 = hex2num(*s)) == -1) break; + if (++s == send) break; + if ((c2 = hex2num(*s)) == -1) break; + csum |= *ptr++ = castchar(c1 << 4 | c2); } } - if (bigendian_p != BIGENDIAN_P()) { - for (i = 0; i < num_longs; i++) - v.i[i] = swapl(v.i[i]); + else { + csum |= *ptr++ = *s; } - s += integer_size; - UNPACK_PUSH(rb_big_unpack(v.i, num_longs)); + s++; + ss = s; } - PACK_ITEM_ADJUST(); - break; - } + rb_str_set_len(buf, ptr - RSTRING_PTR(buf)); + rb_str_buf_cat(buf, ss, send-ss); + csum = ISASCII(csum) ? ENC_CODERANGE_7BIT : ENC_CODERANGE_VALID; + ENCODING_CODERANGE_SET(buf, rb_ascii8bit_encindex(), csum); + UNPACK_PUSH(buf); + } + break; + + case '@': + if (len > RSTRING_LEN(str)) + rb_raise(rb_eArgError, "@ outside of string"); + s = RSTRING_PTR(str) + len; + break; + + case 'X': + if (len > s - RSTRING_PTR(str)) + rb_raise(rb_eArgError, "X outside of string"); + s -= len; + break; + + case 'x': + if (len > send - s) + rb_raise(rb_eArgError, "x outside of string"); + s += len; + break; + + case 'P': + if (sizeof(char *) <= (size_t)(send - s)) { + VALUE tmp = Qnil; + char *t; + + UNPACK_FETCH(&t, char *); + if (t) { + if (!associates) associates = str_associated(str); + tmp = associated_pointer(associates, t); + if (len < RSTRING_LEN(tmp)) { + tmp = rb_str_new(t, len); + str_associate(tmp, associates); + } + } + UNPACK_PUSH(tmp); + } break; - case 'f': - case 'F': - PACK_LENGTH_ADJUST_SIZE(sizeof(float)); - while (len-- > 0) { - float tmp; - memcpy(&tmp, s, sizeof(float)); - s += sizeof(float); - UNPACK_PUSH(DBL2NUM((double)tmp)); - } - PACK_ITEM_ADJUST(); - break; - - case 'e': - PACK_LENGTH_ADJUST_SIZE(sizeof(float)); - while (len-- > 0) { - float tmp; - FLOAT_CONVWITH(ftmp); - - memcpy(&tmp, s, sizeof(float)); - s += sizeof(float); - tmp = VTOHF(tmp,ftmp); - UNPACK_PUSH(DBL2NUM((double)tmp)); - } - PACK_ITEM_ADJUST(); - break; - - case 'E': - PACK_LENGTH_ADJUST_SIZE(sizeof(double)); - while (len-- > 0) { - double tmp; - DOUBLE_CONVWITH(dtmp); - - memcpy(&tmp, s, sizeof(double)); - s += sizeof(double); - tmp = VTOHD(tmp,dtmp); - UNPACK_PUSH(DBL2NUM(tmp)); - } - PACK_ITEM_ADJUST(); - break; - - case 'D': - case 'd': - PACK_LENGTH_ADJUST_SIZE(sizeof(double)); - while (len-- > 0) { - double tmp; - memcpy(&tmp, s, sizeof(double)); - s += sizeof(double); - UNPACK_PUSH(DBL2NUM(tmp)); - } - PACK_ITEM_ADJUST(); - break; - - case 'g': - PACK_LENGTH_ADJUST_SIZE(sizeof(float)); - while (len-- > 0) { - float tmp; - FLOAT_CONVWITH(ftmp); - - memcpy(&tmp, s, sizeof(float)); - s += sizeof(float); - tmp = NTOHF(tmp,ftmp); - UNPACK_PUSH(DBL2NUM((double)tmp)); - } - PACK_ITEM_ADJUST(); - break; - - case 'G': - PACK_LENGTH_ADJUST_SIZE(sizeof(double)); - while (len-- > 0) { - double tmp; - DOUBLE_CONVWITH(dtmp); - - memcpy(&tmp, s, sizeof(double)); - s += sizeof(double); - tmp = NTOHD(tmp,dtmp); - UNPACK_PUSH(DBL2NUM(tmp)); - } - PACK_ITEM_ADJUST(); - break; - - case 'U': - if (len > send - s) len = send - s; - while (len > 0 && s < send) { - long alen = send - s; - unsigned long l; - - l = utf8_to_uv(s, &alen); - s += alen; len--; - UNPACK_PUSH(ULONG2NUM(l)); - } - break; - - case 'u': - { - VALUE buf = infected_str_new(0, (send - s)*3/4, str); - char *ptr = RSTRING_PTR(buf); - long total = 0; - - while (s < send && *s > ' ' && *s < 'a') { - long a,b,c,d; - char hunk[4]; - - hunk[3] = '\0'; - len = (*s++ - ' ') & 077; - total += len; - if (total > RSTRING_LEN(buf)) { - len -= total - RSTRING_LEN(buf); - total = RSTRING_LEN(buf); - } - - while (len > 0) { - long mlen = len > 3 ? 3 : len; - - if (s < send && *s >= ' ') - a = (*s++ - ' ') & 077; - else - a = 0; - if (s < send && *s >= ' ') - b = (*s++ - ' ') & 077; - else - b = 0; - if (s < send && *s >= ' ') - c = (*s++ - ' ') & 077; - else - c = 0; - if (s < send && *s >= ' ') - d = (*s++ - ' ') & 077; - else - d = 0; - hunk[0] = (char)(a << 2 | b >> 4); - hunk[1] = (char)(b << 4 | c >> 2); - hunk[2] = (char)(c << 6 | d); - memcpy(ptr, hunk, mlen); - ptr += mlen; - len -= mlen; - } - if (*s == '\r') s++; - if (*s == '\n') s++; - else if (s < send && (s+1 == send || s[1] == '\n')) - s += 2; /* possible checksum byte */ - } - - rb_str_set_len(buf, total); - UNPACK_PUSH(buf); - } - break; - - case 'm': - { - VALUE buf = infected_str_new(0, (send - s)*3/4, str); - char *ptr = RSTRING_PTR(buf); - int a = -1,b = -1,c = 0,d = 0; - static signed char b64_xtable[256]; - - if (b64_xtable['/'] <= 0) { - int i; - - for (i = 0; i < 256; i++) { - b64_xtable[i] = -1; - } - for (i = 0; i < 64; i++) { - b64_xtable[(unsigned char)b64_table[i]] = (char)i; - } - } - if (len == 0) { - while (s < send) { - a = b = c = d = -1; - a = b64_xtable[(unsigned char)*s++]; - if (s >= send || a == -1) rb_raise(rb_eArgError, "invalid base64"); - b = b64_xtable[(unsigned char)*s++]; - if (s >= send || b == -1) rb_raise(rb_eArgError, "invalid base64"); - if (*s == '=') { - if (s + 2 == send && *(s + 1) == '=') break; - rb_raise(rb_eArgError, "invalid base64"); - } - c = b64_xtable[(unsigned char)*s++]; - if (s >= send || c == -1) rb_raise(rb_eArgError, "invalid base64"); - if (s + 1 == send && *s == '=') break; - d = b64_xtable[(unsigned char)*s++]; - if (d == -1) rb_raise(rb_eArgError, "invalid base64"); - *ptr++ = castchar(a << 2 | b >> 4); - *ptr++ = castchar(b << 4 | c >> 2); - *ptr++ = castchar(c << 6 | d); - } - if (c == -1) { - *ptr++ = castchar(a << 2 | b >> 4); - if (b & 0xf) rb_raise(rb_eArgError, "invalid base64"); - } - else if (d == -1) { - *ptr++ = castchar(a << 2 | b >> 4); - *ptr++ = castchar(b << 4 | c >> 2); - if (c & 0x3) rb_raise(rb_eArgError, "invalid base64"); - } - } - else { - while (s < send) { - a = b = c = d = -1; - while ((a = b64_xtable[(unsigned char)*s]) == -1 && s < send) {s++;} - if (s >= send) break; - s++; - while ((b = b64_xtable[(unsigned char)*s]) == -1 && s < send) {s++;} - if (s >= send) break; - s++; - while ((c = b64_xtable[(unsigned char)*s]) == -1 && s < send) {if (*s == '=') break; s++;} - if (*s == '=' || s >= send) break; - s++; - while ((d = b64_xtable[(unsigned char)*s]) == -1 && s < send) {if (*s == '=') break; s++;} - if (*s == '=' || s >= send) break; - s++; - *ptr++ = castchar(a << 2 | b >> 4); - *ptr++ = castchar(b << 4 | c >> 2); - *ptr++ = castchar(c << 6 | d); - } - if (a != -1 && b != -1) { - if (c == -1 && *s == '=') - *ptr++ = castchar(a << 2 | b >> 4); - else if (c != -1 && *s == '=') { - *ptr++ = castchar(a << 2 | b >> 4); - *ptr++ = castchar(b << 4 | c >> 2); - } - } - } - rb_str_set_len(buf, ptr - RSTRING_PTR(buf)); - UNPACK_PUSH(buf); - } - break; - - case 'M': - { - VALUE buf = infected_str_new(0, send - s, str); - char *ptr = RSTRING_PTR(buf), *ss = s; - int c1, c2; - - while (s < send) { - if (*s == '=') { - if (++s == send) break; - if (s+1 < send && *s == '\r' && *(s+1) == '\n') - s++; - if (*s != '\n') { - if ((c1 = hex2num(*s)) == -1) break; - if (++s == send) break; - if ((c2 = hex2num(*s)) == -1) break; - *ptr++ = castchar(c1 << 4 | c2); - } - } - else { - *ptr++ = *s; - } - s++; - ss = s; - } - rb_str_set_len(buf, ptr - RSTRING_PTR(buf)); - rb_str_buf_cat(buf, ss, send-ss); - ENCODING_CODERANGE_SET(buf, rb_ascii8bit_encindex(), ENC_CODERANGE_VALID); - UNPACK_PUSH(buf); - } - break; - - case '@': - if (len > RSTRING_LEN(str)) - rb_raise(rb_eArgError, "@ outside of string"); - s = RSTRING_PTR(str) + len; - break; - - case 'X': - if (len > s - RSTRING_PTR(str)) - rb_raise(rb_eArgError, "X outside of string"); - s -= len; - break; - - case 'x': - if (len > send - s) - rb_raise(rb_eArgError, "x outside of string"); - s += len; - break; - - case 'P': - if (sizeof(char *) <= (size_t)(send - s)) { - VALUE tmp = Qnil; - char *t; - - memcpy(&t, s, sizeof(char *)); - s += sizeof(char *); - - if (t) { - VALUE a, *p, *pend; - - if (!(a = str_associated(str))) { - rb_raise(rb_eArgError, "no associated pointer"); - } - p = RARRAY_PTR(a); - pend = p + RARRAY_LEN(a); - while (p < pend) { - if (RB_TYPE_P(*p, T_STRING) && RSTRING_PTR(*p) == t) { - if (len < RSTRING_LEN(*p)) { - tmp = rb_tainted_str_new(t, len); - str_associate(tmp, a); - } - else { - tmp = *p; - } - break; - } - p++; - } - if (p == pend) { - rb_raise(rb_eArgError, "non associated pointer"); - } - } - UNPACK_PUSH(tmp); - } - break; - - case 'p': - if (len > (long)((send - s) / sizeof(char *))) - len = (send - s) / sizeof(char *); - while (len-- > 0) { - if ((size_t)(send - s) < sizeof(char *)) - break; - else { - VALUE tmp = Qnil; - char *t; - - memcpy(&t, s, sizeof(char *)); - s += sizeof(char *); - - if (t) { - VALUE a, *p, *pend; - - if (!(a = str_associated(str))) { - rb_raise(rb_eArgError, "no associated pointer"); - } - p = RARRAY_PTR(a); - pend = p + RARRAY_LEN(a); - while (p < pend) { - if (RB_TYPE_P(*p, T_STRING) && RSTRING_PTR(*p) == t) { - tmp = *p; - break; - } - p++; - } - if (p == pend) { - rb_raise(rb_eArgError, "non associated pointer"); - } - } - UNPACK_PUSH(tmp); - } - } - break; - - case 'w': - { - unsigned long ul = 0; - unsigned long ulmask = 0xfeUL << ((sizeof(unsigned long) - 1) * 8); - - while (len > 0 && s < send) { - ul <<= 7; - ul |= (*s & 0x7f); - if (!(*s++ & 0x80)) { - UNPACK_PUSH(ULONG2NUM(ul)); - len--; - ul = 0; - } - else if (ul & ulmask) { - VALUE big = rb_uint2big(ul); - VALUE big128 = rb_uint2big(128); - while (s < send) { - big = rb_big_mul(big, big128); - big = rb_big_plus(big, rb_uint2big(*s & 0x7f)); - if (!(*s++ & 0x80)) { - UNPACK_PUSH(big); - len--; - ul = 0; - break; - } - } - } - } - } - break; - - default: - rb_warning("unknown unpack directive '%c' in '%s'", - type, RSTRING_PTR(fmt)); - break; - } + case 'p': + if (len > (long)((send - s) / sizeof(char *))) + len = (send - s) / sizeof(char *); + while (len-- > 0) { + if ((size_t)(send - s) < sizeof(char *)) + break; + else { + VALUE tmp = Qnil; + char *t; + + UNPACK_FETCH(&t, char *); + if (t) { + if (!associates) associates = str_associated(str); + tmp = associated_pointer(associates, t); + } + UNPACK_PUSH(tmp); + } + } + break; + + case 'w': + { + char *s0 = s; + while (len > 0 && s < send) { + if (*s & 0x80) { + s++; + } + else { + s++; + UNPACK_PUSH(rb_integer_unpack(s0, s-s0, 1, 1, INTEGER_PACK_BIG_ENDIAN)); + len--; + s0 = s; + } + } + } + break; + + default: + unknown_directive("unpack", type, fmt); + break; + } } return ary; } -#define BYTEWIDTH 8 +static VALUE +pack_unpack(rb_execution_context_t *ec, VALUE str, VALUE fmt, VALUE offset) +{ + enum unpack_mode mode = rb_block_given_p() ? UNPACK_BLOCK : UNPACK_ARRAY; + return pack_unpack_internal(str, fmt, mode, RB_NUM2LONG(offset)); +} + +static VALUE +pack_unpack1(rb_execution_context_t *ec, VALUE str, VALUE fmt, VALUE offset) +{ + return pack_unpack_internal(str, fmt, UNPACK_1, RB_NUM2LONG(offset)); +} int rb_uv_to_utf8(char buf[6], unsigned long uv) { if (uv <= 0x7f) { - buf[0] = (char)uv; - return 1; + buf[0] = (char)uv; + return 1; } if (uv <= 0x7ff) { - buf[0] = castchar(((uv>>6)&0xff)|0xc0); - buf[1] = castchar((uv&0x3f)|0x80); - return 2; + buf[0] = castchar(((uv>>6)&0xff)|0xc0); + buf[1] = castchar((uv&0x3f)|0x80); + return 2; } if (uv <= 0xffff) { - buf[0] = castchar(((uv>>12)&0xff)|0xe0); - buf[1] = castchar(((uv>>6)&0x3f)|0x80); - buf[2] = castchar((uv&0x3f)|0x80); - return 3; + buf[0] = castchar(((uv>>12)&0xff)|0xe0); + buf[1] = castchar(((uv>>6)&0x3f)|0x80); + buf[2] = castchar((uv&0x3f)|0x80); + return 3; } if (uv <= 0x1fffff) { - buf[0] = castchar(((uv>>18)&0xff)|0xf0); - buf[1] = castchar(((uv>>12)&0x3f)|0x80); - buf[2] = castchar(((uv>>6)&0x3f)|0x80); - buf[3] = castchar((uv&0x3f)|0x80); - return 4; + buf[0] = castchar(((uv>>18)&0xff)|0xf0); + buf[1] = castchar(((uv>>12)&0x3f)|0x80); + buf[2] = castchar(((uv>>6)&0x3f)|0x80); + buf[3] = castchar((uv&0x3f)|0x80); + return 4; } if (uv <= 0x3ffffff) { - buf[0] = castchar(((uv>>24)&0xff)|0xf8); - buf[1] = castchar(((uv>>18)&0x3f)|0x80); - buf[2] = castchar(((uv>>12)&0x3f)|0x80); - buf[3] = castchar(((uv>>6)&0x3f)|0x80); - buf[4] = castchar((uv&0x3f)|0x80); - return 5; + buf[0] = castchar(((uv>>24)&0xff)|0xf8); + buf[1] = castchar(((uv>>18)&0x3f)|0x80); + buf[2] = castchar(((uv>>12)&0x3f)|0x80); + buf[3] = castchar(((uv>>6)&0x3f)|0x80); + buf[4] = castchar((uv&0x3f)|0x80); + return 5; } if (uv <= 0x7fffffff) { - buf[0] = castchar(((uv>>30)&0xff)|0xfc); - buf[1] = castchar(((uv>>24)&0x3f)|0x80); - buf[2] = castchar(((uv>>18)&0x3f)|0x80); - buf[3] = castchar(((uv>>12)&0x3f)|0x80); - buf[4] = castchar(((uv>>6)&0x3f)|0x80); - buf[5] = castchar((uv&0x3f)|0x80); - return 6; + buf[0] = castchar(((uv>>30)&0xff)|0xfc); + buf[1] = castchar(((uv>>24)&0x3f)|0x80); + buf[2] = castchar(((uv>>18)&0x3f)|0x80); + buf[3] = castchar(((uv>>12)&0x3f)|0x80); + buf[4] = castchar(((uv>>6)&0x3f)|0x80); + buf[5] = castchar((uv&0x3f)|0x80); + return 6; } rb_raise(rb_eRangeError, "pack(U): value out of range"); - UNREACHABLE; + UNREACHABLE_RETURN(Qnil); } static const unsigned long utf8_limits[] = { @@ -2251,12 +1662,12 @@ utf8_to_uv(const char *p, long *lenp) long n; if (!(uv & 0x80)) { - *lenp = 1; + *lenp = 1; return uv; } if (!(uv & 0x40)) { - *lenp = 1; - rb_raise(rb_eArgError, "malformed UTF-8 character"); + *lenp = 1; + rb_raise(rb_eArgError, "malformed UTF-8 character"); } if (!(uv & 0x20)) { n = 2; uv &= 0x1f; } @@ -2265,39 +1676,38 @@ utf8_to_uv(const char *p, long *lenp) else if (!(uv & 0x04)) { n = 5; uv &= 0x03; } else if (!(uv & 0x02)) { n = 6; uv &= 0x01; } else { - *lenp = 1; - rb_raise(rb_eArgError, "malformed UTF-8 character"); + *lenp = 1; + rb_raise(rb_eArgError, "malformed UTF-8 character"); } if (n > *lenp) { - rb_raise(rb_eArgError, "malformed UTF-8 character (expected %ld bytes, given %ld bytes)", - n, *lenp); + rb_raise(rb_eArgError, "malformed UTF-8 character (expected %ld bytes, given %ld bytes)", + n, *lenp); } *lenp = n--; if (n != 0) { - while (n--) { - c = *p++ & 0xff; - if ((c & 0xc0) != 0x80) { - *lenp -= n + 1; - rb_raise(rb_eArgError, "malformed UTF-8 character"); - } - else { - c &= 0x3f; - uv = uv << 6 | c; - } - } + while (n--) { + c = *p++ & 0xff; + if ((c & 0xc0) != 0x80) { + *lenp -= n + 1; + rb_raise(rb_eArgError, "malformed UTF-8 character"); + } + else { + c &= 0x3f; + uv = uv << 6 | c; + } + } } n = *lenp - 1; if (uv < utf8_limits[n]) { - rb_raise(rb_eArgError, "redundant UTF-8 sequence"); + rb_raise(rb_eArgError, "redundant UTF-8 sequence"); } return uv; } +#include "pack.rbinc" + void Init_pack(void) { - rb_define_method(rb_cArray, "pack", pack_pack, 1); - rb_define_method(rb_cString, "unpack", pack_unpack, 1); - - id_associated = rb_intern_const("__pack_associated__"); + id_associated = rb_make_internal_id(); } |