/************************************************ pack.c - $Author$ $Date$ created at: Thu Feb 10 15:17:05 JST 1994 Copyright (C) 1993-1999 Yukihiro Matsumoto ************************************************/ #include "ruby.h" #include #include #ifndef atof double strtod(); #endif #define define_swapx(x, xtype) \ static xtype \ TOKEN_PASTE(swap,x)(z) \ xtype z; \ { \ xtype r; \ xtype *zp; \ unsigned char *s, *t; \ int i; \ \ zp = (xtype *)malloc(sizeof(xtype));\ *zp = z; \ s = (char *)zp; \ t = (char *)malloc(sizeof(xtype)); \ for (i=0 ; i>8)&0xFF)) #else #if SIZEOF_SHORT == 4 #define swaps(x) ((((x)&0xFF)<<24) \ +(((x)>>24)&0xFF) \ +(((x)&0x0000FF00)<<8) \ +(((x)&0x00FF0000)>>8) ) #else define_swapx(s,short); #endif #endif #if SIZEOF_LONG == 4 #define swapl(x) ((((x)&0xFF)<<24) \ +(((x)>>24)&0xFF) \ +(((x)&0x0000FF00)<<8) \ +(((x)&0x00FF0000)>>8) ) #else #if SIZEOF_LONG == 8 #define swapl(x) ((((x)&0x00000000000000FF)<<56) \ +(((x)&0xFF00000000000000)>>56) \ +(((x)&0x000000000000FF00)<<40) \ +(((x)&0x00FF000000000000)>>40) \ +(((x)&0x0000000000FF0000)<<24) \ +(((x)&0x0000FF0000000000)>>24) \ +(((x)&0x00000000FF000000)<<8) \ +(((x)&0x000000FF00000000)>>8) ) #else define_swapx(l,long); #endif #endif #if SIZEOF_FLOAT == 4 #if SIZEOF_LONG == 4 /* SIZEOF_FLOAT == 4 == SIZEOF_LONG */ #define swapf(x) swapl(x) #define FLOAT_SWAPPER unsigned long #else #if SIZEOF_SHORT == 4 /* SIZEOF_FLOAT == 4 == SIZEOF_SHORT */ #define swapf(x) swaps(x) #define FLOAT_SWAPPER unsigned short #else /* SIZEOF_FLOAT == 4 but undivide by known size of int */ define_swapx(f,float); #endif /* #if SIZEOF_SHORT == 4 */ #endif /* #if SIZEOF_LONG == 4 */ #else /* SIZEOF_FLOAT != 4 */ define_swapx(f,float); #endif /* #if SIZEOF_FLOAT == 4 */ #if SIZEOF_DOUBLE == 8 #if SIZEOF_LONG == 8 /* SIZEOF_DOUBLE == 8 == SIZEOF_LONG */ #define swapd(x) swapl(x) #define DOUBLE_SWAPPER unsigned long #else #if SIZEOF_LONG == 4 /* SIZEOF_DOUBLE == 8 && 4 == SIZEOF_LONG */ static double swapd(d) 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; } #else #if SIZEOF_SHORT == 4 /* SIZEOF_DOUBLE == 8 && 4 == SIZEOF_SHORT */ static double swapd(d) 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 undivied by known size of int */ define_swapx(d, double); #endif /* #if SIZEOF_SHORT == 4 */ #endif /* #if SIZEOF_LONG == 4 */ #endif /* #if SIZEOF_LONG == 8 */ #else /* SIZEOF_DOUBLE != 8 */ define_swapx(d, double); #endif /* #if SIZEOF_DPOUBLE == 8 */ #undef define_swapx #ifdef DYNAMIC_ENDIAN #ifdef ntohs #undef ntohs #undef ntohl #undef htons #undef htonl #endif static int endian() { 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 ntohs(x) (endian()?(x):swaps(x)) #define ntohl(x) (endian()?(x):swapl(x)) #define ntohf(x) (endian()?(x):swapf(x)) #define ntohd(x) (endian()?(x):swapd(x)) #define htons(x) (endian()?(x):swaps(x)) #define htonl(x) (endian()?(x):swapl(x)) #define htonf(x) (endian()?(x):swapf(x)) #define htond(x) (endian()?(x):swapd(x)) #define htovs(x) (endian()?swaps(x):(x)) #define htovl(x) (endian()?swapl(x):(x)) #define htovf(x) (endian()?swapf(x):(x)) #define htovd(x) (endian()?swapd(x):(x)) #define vtohs(x) (endian()?swaps(x):(x)) #define vtohl(x) (endian()?swapl(x):(x)) #define vtohf(x) (endian()?swapf(x):(x)) #define vtohd(x) (endian()?swapd(x):(x)) #else #ifdef WORDS_BIGENDIAN #ifndef ntohs #define ntohs(x) (x) #define ntohl(x) (x) #define htons(x) (x) #define htonl(x) (x) #endif #define ntohf(x) (x) #define ntohd(x) (x) #define htonf(x) (x) #define htond(x) (x) #define htovs(x) swaps(x) #define htovl(x) swapl(x) #define htovf(x) swapf(x) #define htovd(x) swapd(x) #define vtohs(x) swaps(x) #define vtohl(x) swapl(x) #define vtohf(x) swapf(x) #define vtohd(x) swapd(x) #else /* LITTLE ENDIAN */ #ifndef ntohs #undef ntohs #undef ntohl #undef htons #undef htonl #define ntohs(x) swaps(x) #define ntohl(x) swapl(x) #define htons(x) swaps(x) #define htonl(x) swapl(x) #endif #define ntohf(x) swapf(x) #define ntohd(x) swapd(x) #define htonf(x) swapf(x) #define htond(x) swapd(x) #define htovs(x) (x) #define htovl(x) (x) #define htovf(x) (x) #define htovd(x) (x) #define vtohs(x) (x) #define vtohl(x) (x) #define vtohf(x) (x) #define vtohd(x) (x) #endif #endif #ifdef FLOAT_SWAPPER #define FLOAT_CONVWITH(y) FLOAT_SWAPPER y; #define HTONF(x,y) (memcpy(&y,&x,sizeof(float)), \ y = htonf((FLOAT_SWAPPER)y), \ memcpy(&x,&y,sizeof(float)), \ x) #define HTOVF(x,y) (memcpy(&y,&x,sizeof(float)), \ y = htovf((FLOAT_SWAPPER)y), \ memcpy(&x,&y,sizeof(float)), \ x) #define NTOHF(x,y) (memcpy(&y,&x,sizeof(float)), \ y = ntohf((FLOAT_SWAPPER)y), \ memcpy(&x,&y,sizeof(float)), \ x) #define VTOHF(x,y) (memcpy(&y,&x,sizeof(float)), \ y = vtohf((FLOAT_SWAPPER)y), \ memcpy(&x,&y,sizeof(float)), \ x) #else #define FLOAT_CONVWITH(y) #define HTONF(x,y) htonf(x) #define HTOVF(x,y) htovf(x) #define NTOHF(x,y) ntohf(x) #define VTOHF(x,y) vtohf(x) #endif #ifdef DOUBLE_SWAPPER #define DOUBLE_CONVWITH(y) DOUBLE_SWAPPER y; #define HTOND(x,y) (memcpy(&y,&x,sizeof(double)), \ y = htond((DOUBLE_SWAPPER)y), \ memcpy(&x,&y,sizeof(double)), \ x) #define HTOVD(x,y) (memcpy(&y,&x,sizeof(double)), \ y = htovd((DOUBLE_SWAPPER)y), \ memcpy(&x,&y,sizeof(double)), \ x) #define NTOHD(x,y) (memcpy(&y,&x,sizeof(double)), \ y = ntohd((DOUBLE_SWAPPER)y), \ memcpy(&x,&y,sizeof(double)), \ x) #define VTOHD(x,y) (memcpy(&y,&x,sizeof(double)), \ y = vtohd((DOUBLE_SWAPPER)y), \ memcpy(&x,&y,sizeof(double)), \ x) #else #define DOUBLE_CONVWITH(y) #define HTOND(x,y) htond(x) #define HTOVD(x,y) htovd(x) #define NTOHD(x,y) ntohd(x) #define VTOHD(x,y) vtohd(x) #endif static char *toofew = "too few arguments"; static void encodes _((VALUE,char*,int,int)); static void qpencode _((VALUE,VALUE,int)); static void pack_add_ptr(str, add) VALUE str, add; { #define STR_NO_ORIG FL_USER3 /* copied from string.c */ if (!RSTRING(str)->orig) { RSTRING(str)->orig = rb_ary_new(); FL_SET(str, STR_NO_ORIG); } rb_ary_push(RSTRING(str)->orig, add); } static VALUE pack_pack(ary, fmt) VALUE ary, fmt; { static char *nul10 = "\0\0\0\0\0\0\0\0\0\0"; static char *spc10 = " "; char *p, *pend; VALUE res, from; char type; int items, len, idx; char *ptr; int plen; p = rb_str2cstr(fmt, &plen); pend = p + plen; res = rb_str_new(0, 0); items = RARRAY(ary)->len; idx = 0; #define NEXTFROM (items-- > 0 ? RARRAY(ary)->ptr[idx++] : (rb_raise(rb_eArgError, toofew),0)) while (p < pend) { type = *p++; /* get data type */ if (*p == '*') { /* set data length */ len = strchr("@Xxu", type) ? 0 : items; p++; } else if (ISDIGIT(*p)) { len = strtoul(p, (char**)&p, 10); } else { len = 1; } switch (type) { case 'A': case 'a': case 'B': case 'b': case 'H': case 'h': from = NEXTFROM; if (NIL_P(from)) { ptr = ""; plen = 0; } else { from = rb_obj_as_string(from); ptr = RSTRING(from)->ptr; plen = RSTRING(from)->len; } if (p[-1] == '*') len = plen; switch (type) { case 'a': case 'A': if (plen >= len) rb_str_cat(res, ptr, len); else { rb_str_cat(res, ptr, plen); len -= plen; while (len >= 10) { rb_str_cat(res, (type == 'A')?spc10:nul10, 10); len -= 10; } rb_str_cat(res, (type == 'A')?spc10:nul10, len); } break; case 'b': { int byte = 0; int i; for (i=0; i++ < len; ptr++) { if (*ptr & 1) byte |= 128; if (i & 7) byte >>= 1; else { char c = byte & 0xff; rb_str_cat(res, &c, 1); byte = 0; } } if (len & 7) { char c; byte >>= 7 - (len & 7); c = byte & 0xff; rb_str_cat(res, &c, 1); } } break; case 'B': { int byte = 0; int i; for (i=0; i++ < len; ptr++) { byte |= *ptr & 1; if (i & 7) byte <<= 1; else { char c = byte & 0xff; rb_str_cat(res, &c, 1); byte = 0; } } if (len & 7) { char c; byte <<= 7 - (len & 7); c = byte & 0xff; rb_str_cat(res, &c, 1); } } break; case 'h': { int byte = 0; int i; for (i=0; i++ < len; ptr++) { if (ISXDIGIT(*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_str_cat(res, &c, 1); byte = 0; } } } if (len & 1) { char c = byte & 0xff; rb_str_cat(res, &c, 1); } } break; case 'H': { int byte = 0; int i; for (i=0; i++ < len; ptr++) { if (ISXDIGIT(*ptr)) { if (ISALPHA(*ptr)) byte |= ((*ptr & 15) + 9) & 15; else byte |= *ptr & 15; if (i & 1) byte <<= 4; else { char c = byte & 0xff; rb_str_cat(res, &c, 1); byte = 0; } } } if (len & 1) { char c = byte & 0xff; rb_str_cat(res, &c, 1); } } break; } break; case 'c': case 'C': while (len-- > 0) { char c; from = NEXTFROM; if (NIL_P(from)) c = 0; else { c = NUM2INT(from); } rb_str_cat(res, &c, sizeof(char)); } break; case 's': case 'S': while (len-- > 0) { short s; from = NEXTFROM; if (NIL_P(from)) s = 0; else { s = NUM2INT(from); } rb_str_cat(res, (char*)&s, sizeof(short)); } break; case 'i': case 'I': while (len-- > 0) { int i; from = NEXTFROM; if (NIL_P(from)) i = 0; else { i = NUM2UINT(from); } rb_str_cat(res, (char*)&i, sizeof(int)); } break; case 'l': case 'L': while (len-- > 0) { long l; from = NEXTFROM; if (NIL_P(from)) l = 0; else { l = NUM2ULONG(from); } rb_str_cat(res, (char*)&l, sizeof(long)); } break; case 'n': while (len-- > 0) { unsigned short s; from = NEXTFROM; if (NIL_P(from)) s = 0; else { s = NUM2INT(from); } s = htons(s); rb_str_cat(res, (char*)&s, sizeof(short)); } break; case 'N': while (len-- > 0) { unsigned long l; from = NEXTFROM; if (NIL_P(from)) l = 0; else { l = NUM2ULONG(from); } l = htonl(l); rb_str_cat(res, (char*)&l, sizeof(long)); } break; case 'v': while (len-- > 0) { unsigned short s; from = NEXTFROM; if (NIL_P(from)) s = 0; else { s = NUM2INT(from); } s = htovs(s); rb_str_cat(res, (char*)&s, sizeof(short)); } break; case 'V': while (len-- > 0) { unsigned long l; from = NEXTFROM; if (NIL_P(from)) l = 0; else { l = NUM2ULONG(from); } l = htovl(l); rb_str_cat(res, (char*)&l, sizeof(long)); } break; case 'f': case 'F': while (len-- > 0) { float f; from = NEXTFROM; switch (TYPE(from)) { case T_FLOAT: f = RFLOAT(from)->value; break; case T_STRING: f = strtod(RSTRING(from)->ptr, 0); default: f = (float)NUM2INT(from); break; } rb_str_cat(res, (char*)&f, sizeof(float)); } break; case 'e': while (len-- > 0) { float f; FLOAT_CONVWITH(ftmp); from = NEXTFROM; switch (TYPE(from)) { case T_FLOAT: f = RFLOAT(from)->value; break; case T_STRING: f = strtod(RSTRING(from)->ptr, 0); default: f = (float)NUM2INT(from); break; } f = HTOVF(f,ftmp); rb_str_cat(res, (char*)&f, sizeof(float)); } break; case 'E': while (len-- > 0) { double d; DOUBLE_CONVWITH(dtmp); from = NEXTFROM; switch (TYPE(from)) { case T_FLOAT: d = RFLOAT(from)->value; break; case T_STRING: d = strtod(RSTRING(from)->ptr, 0); default: d = (double)NUM2INT(from); break; } d = HTOVD(d,dtmp); rb_str_cat(res, (char*)&d, sizeof(double)); } break; case 'd': case 'D': while (len-- > 0) { double d; from = NEXTFROM; switch (TYPE(from)) { case T_FLOAT: d = RFLOAT(from)->value; break; case T_STRING: d = strtod(RSTRING(from)->ptr, 0); default: d = (double)NUM2INT(from); break; } rb_str_cat(res, (char*)&d, sizeof(double)); } break; case 'g': while (len-- > 0) { float f; FLOAT_CONVWITH(ftmp); from = NEXTFROM; switch (TYPE(from)) { case T_FLOAT: f = RFLOAT(from)->value; break; case T_STRING: f = strtod(RSTRING(from)->ptr, 0); default: f = (float)NUM2INT(from); break; } f = HTONF(f,ftmp); rb_str_cat(res, (char*)&f, sizeof(float)); } break; case 'G': while (len-- > 0) { double d; DOUBLE_CONVWITH(dtmp); from = NEXTFROM; switch (TYPE(from)) { case T_FLOAT: d = RFLOAT(from)->value; break; case T_STRING: d = strtod(RSTRING(from)->ptr, 0); default: d = (double)NUM2INT(from); break; } d = HTOND(d,dtmp); rb_str_cat(res, (char*)&d, sizeof(double)); } break; case 'x': grow: while (len >= 10) { rb_str_cat(res, nul10, 10); len -= 10; } rb_str_cat(res, nul10, len); break; case 'X': shrink: if (RSTRING(res)->len < len) rb_raise(rb_eArgError, "X outside of string"); RSTRING(res)->len -= len; RSTRING(res)->ptr[RSTRING(res)->len] = '\0'; break; case '@': len -= RSTRING(res)->len; if (len > 0) goto grow; len = -len; if (len > 0) goto shrink; break; case '%': rb_raise(rb_eArgError, "% may only be used in unpack"); break; case 'u': case 'm': from = rb_obj_as_string(NEXTFROM); ptr = RSTRING(from)->ptr; plen = RSTRING(from)->len; if (len <= 1) len = 45; else len = len / 3 * 3; while (plen > 0) { int todo; if (plen > len) todo = len; else todo = plen; encodes(res, ptr, todo, type); plen -= todo; ptr += todo; } break; case 'M': from = rb_obj_as_string(NEXTFROM); if (len <= 1) len = 72; qpencode(res, from, len); break; case 'P': len = 1; /* FALL THROUGH */ case 'p': while (len-- > 0) { char *t; from = NEXTFROM; if (NIL_P(from)) t = ""; else { t = STR2CSTR(from); pack_add_ptr(res, from); } rb_str_cat(res, (char*)&t, sizeof(char*)); } break; default: break; } } return res; } static char uu_table[] = "`!\"#$%&'()*+,-./0123456789:;<=>?@ABCDEFGHIJKLMNOPQRSTUVWXYZ[\\]^_"; static char b64_table[] = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/"; static void encodes(str, s, len, type) VALUE str; char *s; int len; int type; { char *buff = ALLOCA_N(char, len * 4 / 3 + 6); int i = 0; char *trans = type == 'u' ? uu_table : b64_table; int padding; if (type == 'u') { buff[i++] = len + ' '; padding = '`'; } else { padding = '='; } while (len >= 3) { 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; } 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; } 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++] = '\n'; rb_str_cat(str, buff, i); } static char hex_table[] = "0123456789ABCDEF"; static void qpencode(str, from, len) VALUE str, from; int len; { char buff[1024]; int i = 0, n = 0, prev = EOF; unsigned char *s = (unsigned char*)RSTRING(from)->ptr; unsigned char *send = s + RSTRING(from)->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]; n += 3; prev = EOF; } else if (*s == '\n') { if (prev == ' ' || prev == '\t') { buff[i++] = '='; buff[i++] = *s; } buff[i++] = *s; n = 0; prev = *s; } else { buff[i++] = *s; n++; prev = *s; } if (n > len) { buff[i++] = '='; buff[i++] = '\n'; n = 0; prev = '\n'; } if (i > 1024 - 5) { rb_str_cat(str, buff, i); i = 0; } s++; } if (n > 0) { buff[i++] = '='; buff[i++] = '\n'; } if (i > 0) { rb_str_cat(str, buff, i); } } #if defined(__GNUC__) && __GNUC__ >= 2 && !defined(RUBY_NO_INLINE) static __inline__ int #else static int #endif hex2num(c) 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; } } static VALUE pack_unpack(str, fmt) VALUE str, fmt; { static char *hexdigits = "0123456789abcdef0123456789ABCDEFx"; char *s, *send; char *p, *pend; VALUE ary; char type; int len; s = rb_str2cstr(str, &len); send = s + len; p = rb_str2cstr(fmt, &len); pend = p + len; ary = rb_ary_new(); while (p < pend) { type = *p++; if (*p == '*') { len = send - s; p++; } else if (ISDIGIT(*p)) { len = strtoul(p, (char**)&p, 10); } else { len = (type != '@'); } switch (type) { case '%': rb_raise(rb_eArgError, "% is not supported(yet)"); break; case 'A': if (len > send - s) len = send - s; { int end = len; char *t = s + len - 1; while (t >= s) { if (*t != ' ' && *t != '\0') break; t--; len--; } rb_ary_push(ary, rb_str_new(s, len)); s += end; } break; case 'a': if (len > send - s) len = send - s; rb_ary_push(ary, rb_str_new(s, len)); s += len; break; case 'b': { VALUE bitstr; char *t; int bits, i; if (p[-1] == '*' || len > (send - s) * 8) len = (send - s) * 8; bits = 0; rb_ary_push(ary, bitstr = rb_str_new(0, len)); t = RSTRING(bitstr)->ptr; for (i=0; i>= 1; else bits = *s++; *t++ = (bits & 1) ? '1' : '0'; } } break; case 'B': { VALUE bitstr; char *t; int bits, i; if (p[-1] == '*' || len > (send - s) * 8) len = (send - s) * 8; bits = 0; rb_ary_push(ary, bitstr = rb_str_new(0, len)); t = RSTRING(bitstr)->ptr; for (i=0; i (send - s) * 2) len = (send - s) * 2; bits = 0; rb_ary_push(ary, bitstr = rb_str_new(0, len)); t = RSTRING(bitstr)->ptr; for (i=0; i>= 4; else bits = *s++; *t++ = hexdigits[bits & 15]; } } break; case 'H': { VALUE bitstr; char *t; int bits, i; if (p[-1] == '*' || len > (send - s) * 2) len = (send - s) * 2; bits = 0; rb_ary_push(ary, bitstr = rb_str_new(0, len)); t = RSTRING(bitstr)->ptr; for (i=0; i> 4) & 15]; } } break; case 'c': if (len > send - s) len = send - s; while (len-- > 0) { int c = *s++; if (c > (char)127) c-=256; rb_ary_push(ary, INT2FIX(c)); } break; case 'C': if (len > send - s) len = send - s; while (len-- > 0) { unsigned char c = *s++; rb_ary_push(ary, INT2FIX(c)); } break; case 's': if (len >= (send - s) / sizeof(short)) len = (send - s) / sizeof(short); while (len-- > 0) { short tmp; memcpy(&tmp, s, sizeof(short)); s += sizeof(short); rb_ary_push(ary, INT2FIX(tmp)); } break; case 'S': if (len >= (send - s) / sizeof(short)) len = (send - s) / sizeof(short); while (len-- > 0) { unsigned short tmp; memcpy(&tmp, s, sizeof(short)); s += sizeof(short); rb_ary_push(ary, INT2FIX(tmp)); } break; case 'i': if (len >= (send - s) / sizeof(int)) len = (send - s) / sizeof(int); while (len-- > 0) { int tmp; memcpy(&tmp, s, sizeof(int)); s += sizeof(int); rb_ary_push(ary, rb_int2inum(tmp)); } break; case 'I': if (len >= (send - s) / sizeof(int)) len = (send - s) / sizeof(int); while (len-- > 0) { unsigned int tmp; memcpy(&tmp, s, sizeof(int)); s += sizeof(int); rb_ary_push(ary, rb_uint2inum(tmp)); } break; case 'l': if (len >= (send - s) / sizeof(long)) len = (send - s) / sizeof(long); while (len-- > 0) { long tmp; memcpy(&tmp, s, sizeof(long)); s += sizeof(long); rb_ary_push(ary, rb_int2inum(tmp)); } break; case 'L': if (len >= (send - s) / sizeof(long)) len = (send - s) / sizeof(long); while (len-- > 0) { unsigned long tmp; memcpy(&tmp, s, sizeof(long)); s += sizeof(long); rb_ary_push(ary, rb_uint2inum(tmp)); } break; case 'n': if (len >= (send - s) / sizeof(short)) len = (send - s) / sizeof(short); while (len-- > 0) { unsigned short tmp; memcpy(&tmp, s, sizeof(short)); s += sizeof(short); tmp = ntohs(tmp); rb_ary_push(ary, rb_uint2inum(tmp)); } break; case 'N': if (len >= (send - s) / sizeof(long)) len = (send - s) / sizeof(long); while (len-- > 0) { unsigned long tmp; memcpy(&tmp, s, sizeof(long)); s += sizeof(long); tmp = ntohl(tmp); rb_ary_push(ary, rb_uint2inum(tmp)); } break; case 'v': if (len >= (send - s) / sizeof(short)) len = (send - s) / sizeof(short); while (len-- > 0) { unsigned short tmp; memcpy(&tmp, s, sizeof(short)); s += sizeof(short); tmp = vtohs(tmp); rb_ary_push(ary, rb_uint2inum(tmp)); } break; case 'V': if (len >= (send - s) / sizeof(long)) len = (send - s) / sizeof(long); while (len-- > 0) { unsigned long tmp; memcpy(&tmp, s, sizeof(long)); s += sizeof(long); tmp = vtohl(tmp); rb_ary_push(ary, rb_uint2inum(tmp)); } break; case 'f': case 'F': if (len >= (send - s) / sizeof(float)) len = (send - s) / sizeof(float); while (len-- > 0) { float tmp; memcpy(&tmp, s, sizeof(float)); s += sizeof(float); rb_ary_push(ary, rb_float_new((double)tmp)); } break; case 'e': if (len >= (send - s) / sizeof(float)) len = (send - s) / sizeof(float); while (len-- > 0) { float tmp; FLOAT_CONVWITH(ftmp); memcpy(&tmp, s, sizeof(float)); s += sizeof(float); tmp = VTOHF(tmp,ftmp); rb_ary_push(ary, rb_float_new((double)tmp)); } break; case 'E': if (len >= (send - s) / sizeof(double)) len = (send - s) / sizeof(double); while (len-- > 0) { double tmp; DOUBLE_CONVWITH(dtmp); memcpy(&tmp, s, sizeof(double)); s += sizeof(double); tmp = VTOHD(tmp,dtmp); rb_ary_push(ary, rb_float_new(tmp)); } break; case 'D': case 'd': if (len >= (send - s) / sizeof(double)) len = (send - s) / sizeof(double); while (len-- > 0) { double tmp; memcpy(&tmp, s, sizeof(double)); s += sizeof(double); rb_ary_push(ary, rb_float_new(tmp)); } break; case 'g': if (len >= (send - s) / sizeof(float)) len = (send - s) / sizeof(float); while (len-- > 0) { float tmp; FLOAT_CONVWITH(ftmp;) memcpy(&tmp, s, sizeof(float)); s += sizeof(float); tmp = NTOHF(tmp,ftmp); rb_ary_push(ary, rb_float_new((double)tmp)); } break; case 'G': if (len >= (send - s) / sizeof(double)) len = (send - s) / sizeof(double); while (len-- > 0) { double tmp; DOUBLE_CONVWITH(dtmp); memcpy(&tmp, s, sizeof(double)); s += sizeof(double); tmp = NTOHD(tmp,dtmp); rb_ary_push(ary, rb_float_new(tmp)); } break; case 'u': { VALUE str = rb_str_new(0, (send - s)*3/4); char *ptr = RSTRING(str)->ptr; int 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(str)->len) { len -= total - RSTRING(str)->len; total = RSTRING(str)->len; } while (len > 0) { int 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] = a << 2 | b >> 4; hunk[1] = b << 4 | c >> 2; hunk[2] = 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 */ } RSTRING(str)->len = total; rb_ary_push(ary, str); } break; case 'm': { VALUE str = rb_str_new(0, (send - s)*3/4); char *ptr = RSTRING(str)->ptr; int a,b,c,d; static int first = 1; static int b64_xtable[256]; if (first) { int i; first = 0; for (i = 0; i < 256; i++) { b64_xtable[i] = -1; } for (i = 0; i < 64; i++) { b64_xtable[b64_table[i]] = i; } } for (;;) { while (s[0] == '\r' || s[0] == '\n') { s++; } if ((a = b64_xtable[s[0]]) == -1) break; if ((b = b64_xtable[s[1]]) == -1) break; if ((c = b64_xtable[s[2]]) == -1) break; if ((d = b64_xtable[s[3]]) == -1) break; *ptr++ = a << 2 | b >> 4; *ptr++ = b << 4 | c >> 2; *ptr++ = c << 6 | d; s += 4; } if (a != -1 && b != -1 && s[2] == '=') { *ptr++ = a << 2 | b >> 4; } if (a != -1 && b != -1 && c != -1 && s[3] == '=') { *ptr++ = a << 2 | b >> 4; *ptr++ = b << 4 | c >> 2; } RSTRING(str)->len = ptr - RSTRING(str)->ptr; rb_ary_push(ary, str); } break; case 'M': { VALUE str = rb_str_new(0, send - s); char *ptr = RSTRING(str)->ptr; int c1, c2; while (s < send) { if (*s == '=') { if (++s == send) break; if (*s != '\n') { if ((c1 = hex2num(*s)) == -1) break; if (++s == send) break; if ((c2 = hex2num(*s)) == -1) break; *ptr++ = c1 << 4 | c2; } } else { *ptr++ = *s; } s++; } RSTRING(str)->len = ptr - RSTRING(str)->ptr; rb_ary_push(ary, str); } break; case '@': s = RSTRING(str)->ptr + len; break; case 'X': if (len > s - RSTRING(str)->ptr) 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 *) <= send - s) { char *t; VALUE str = rb_str_new(0, 0); memcpy(&t, s, sizeof(char *)); s += sizeof(char *); if (t) rb_str_cat(str, t, len); rb_ary_push(ary, str); } break; case 'p': if (len > (send - s) / sizeof(char *)) len = (send - s) / sizeof(char *); while (len-- > 0) { if (send - s < sizeof(char *)) break; else { char *t; VALUE str = rb_str_new(0, 0); memcpy(&t, s, sizeof(char *)); s += sizeof(char *); if (t) rb_str_cat(str, t, strlen(t)); rb_ary_push(ary, str); } } break; default: break; } } return ary; } void Init_pack() { rb_define_method(rb_cArray, "pack", pack_pack, 1); rb_define_method(rb_cString, "unpack", pack_unpack, 1); }