1*0Sstevel@tonic-gate /************************************************************** 2*0Sstevel@tonic-gate * Original: 3*0Sstevel@tonic-gate * Patrick Powell Tue Apr 11 09:48:21 PDT 1995 4*0Sstevel@tonic-gate * A bombproof version of doprnt (dopr) included. 5*0Sstevel@tonic-gate * Sigh. This sort of thing is always nasty do deal with. Note that 6*0Sstevel@tonic-gate * the version here does not include floating point... 7*0Sstevel@tonic-gate * 8*0Sstevel@tonic-gate * snprintf() is used instead of sprintf() as it does limit checks 9*0Sstevel@tonic-gate * for string length. This covers a nasty loophole. 10*0Sstevel@tonic-gate * 11*0Sstevel@tonic-gate * The other functions are there to prevent NULL pointers from 12*0Sstevel@tonic-gate * causing nast effects. 13*0Sstevel@tonic-gate * 14*0Sstevel@tonic-gate * More Recently: 15*0Sstevel@tonic-gate * Brandon Long <blong@fiction.net> 9/15/96 for mutt 0.43 16*0Sstevel@tonic-gate * This was ugly. It is still ugly. I opted out of floating point 17*0Sstevel@tonic-gate * numbers, but the formatter understands just about everything 18*0Sstevel@tonic-gate * from the normal C string format, at least as far as I can tell from 19*0Sstevel@tonic-gate * the Solaris 2.5 printf(3S) man page. 20*0Sstevel@tonic-gate * 21*0Sstevel@tonic-gate * Brandon Long <blong@fiction.net> 10/22/97 for mutt 0.87.1 22*0Sstevel@tonic-gate * Ok, added some minimal floating point support, which means this 23*0Sstevel@tonic-gate * probably requires libm on most operating systems. Don't yet 24*0Sstevel@tonic-gate * support the exponent (e,E) and sigfig (g,G). Also, fmtint() 25*0Sstevel@tonic-gate * was pretty badly broken, it just wasn't being exercised in ways 26*0Sstevel@tonic-gate * which showed it, so that's been fixed. Also, formated the code 27*0Sstevel@tonic-gate * to mutt conventions, and removed dead code left over from the 28*0Sstevel@tonic-gate * original. Also, there is now a builtin-test, just compile with: 29*0Sstevel@tonic-gate * gcc -DTEST_SNPRINTF -o snprintf snprintf.c -lm 30*0Sstevel@tonic-gate * and run snprintf for results. 31*0Sstevel@tonic-gate * 32*0Sstevel@tonic-gate * Thomas Roessler <roessler@guug.de> 01/27/98 for mutt 0.89i 33*0Sstevel@tonic-gate * The PGP code was using unsigned hexadecimal formats. 34*0Sstevel@tonic-gate * Unfortunately, unsigned formats simply didn't work. 35*0Sstevel@tonic-gate * 36*0Sstevel@tonic-gate * Michael Elkins <me@cs.hmc.edu> 03/05/98 for mutt 0.90.8 37*0Sstevel@tonic-gate * The original code assumed that both snprintf() and vsnprintf() were 38*0Sstevel@tonic-gate * missing. Some systems only have snprintf() but not vsnprintf(), so 39*0Sstevel@tonic-gate * the code is now broken down under HAVE_SNPRINTF and HAVE_VSNPRINTF. 40*0Sstevel@tonic-gate * 41*0Sstevel@tonic-gate * Ben Lindstrom <mouring@eviladmin.org> 09/27/00 for OpenSSH 42*0Sstevel@tonic-gate * Welcome to the world of %lld and %qd support. With other 43*0Sstevel@tonic-gate * long long support. This is needed for sftp-server to work 44*0Sstevel@tonic-gate * right. 45*0Sstevel@tonic-gate * 46*0Sstevel@tonic-gate * Ben Lindstrom <mouring@eviladmin.org> 02/12/01 for OpenSSH 47*0Sstevel@tonic-gate * Removed all hint of VARARGS stuff and banished it to the void, 48*0Sstevel@tonic-gate * and did a bit of KNF style work to make things a bit more 49*0Sstevel@tonic-gate * acceptable. Consider stealing from mutt or enlightenment. 50*0Sstevel@tonic-gate **************************************************************/ 51*0Sstevel@tonic-gate 52*0Sstevel@tonic-gate #include "includes.h" 53*0Sstevel@tonic-gate 54*0Sstevel@tonic-gate RCSID("$Id: bsd-snprintf.c,v 1.5 2001/02/25 23:20:41 mouring Exp $"); 55*0Sstevel@tonic-gate 56*0Sstevel@tonic-gate #pragma ident "%Z%%M% %I% %E% SMI" 57*0Sstevel@tonic-gate 58*0Sstevel@tonic-gate #if defined(BROKEN_SNPRINTF) /* For those with broken snprintf() */ 59*0Sstevel@tonic-gate # undef HAVE_SNPRINTF 60*0Sstevel@tonic-gate # undef HAVE_VSNPRINTF 61*0Sstevel@tonic-gate #endif 62*0Sstevel@tonic-gate 63*0Sstevel@tonic-gate #if !defined(HAVE_SNPRINTF) || !defined(HAVE_VSNPRINTF) 64*0Sstevel@tonic-gate 65*0Sstevel@tonic-gate static void 66*0Sstevel@tonic-gate dopr(char *buffer, size_t maxlen, const char *format, va_list args); 67*0Sstevel@tonic-gate 68*0Sstevel@tonic-gate static void 69*0Sstevel@tonic-gate fmtstr(char *buffer, size_t *currlen, size_t maxlen, char *value, int flags, 70*0Sstevel@tonic-gate int min, int max); 71*0Sstevel@tonic-gate 72*0Sstevel@tonic-gate static void 73*0Sstevel@tonic-gate fmtint(char *buffer, size_t *currlen, size_t maxlen, long value, int base, 74*0Sstevel@tonic-gate int min, int max, int flags); 75*0Sstevel@tonic-gate 76*0Sstevel@tonic-gate static void 77*0Sstevel@tonic-gate fmtfp(char *buffer, size_t *currlen, size_t maxlen, long double fvalue, 78*0Sstevel@tonic-gate int min, int max, int flags); 79*0Sstevel@tonic-gate 80*0Sstevel@tonic-gate static void 81*0Sstevel@tonic-gate dopr_outch(char *buffer, size_t *currlen, size_t maxlen, char c); 82*0Sstevel@tonic-gate 83*0Sstevel@tonic-gate /* 84*0Sstevel@tonic-gate * dopr(): poor man's version of doprintf 85*0Sstevel@tonic-gate */ 86*0Sstevel@tonic-gate 87*0Sstevel@tonic-gate /* format read states */ 88*0Sstevel@tonic-gate #define DP_S_DEFAULT 0 89*0Sstevel@tonic-gate #define DP_S_FLAGS 1 90*0Sstevel@tonic-gate #define DP_S_MIN 2 91*0Sstevel@tonic-gate #define DP_S_DOT 3 92*0Sstevel@tonic-gate #define DP_S_MAX 4 93*0Sstevel@tonic-gate #define DP_S_MOD 5 94*0Sstevel@tonic-gate #define DP_S_CONV 6 95*0Sstevel@tonic-gate #define DP_S_DONE 7 96*0Sstevel@tonic-gate 97*0Sstevel@tonic-gate /* format flags - Bits */ 98*0Sstevel@tonic-gate #define DP_F_MINUS (1 << 0) 99*0Sstevel@tonic-gate #define DP_F_PLUS (1 << 1) 100*0Sstevel@tonic-gate #define DP_F_SPACE (1 << 2) 101*0Sstevel@tonic-gate #define DP_F_NUM (1 << 3) 102*0Sstevel@tonic-gate #define DP_F_ZERO (1 << 4) 103*0Sstevel@tonic-gate #define DP_F_UP (1 << 5) 104*0Sstevel@tonic-gate #define DP_F_UNSIGNED (1 << 6) 105*0Sstevel@tonic-gate 106*0Sstevel@tonic-gate /* Conversion Flags */ 107*0Sstevel@tonic-gate #define DP_C_SHORT 1 108*0Sstevel@tonic-gate #define DP_C_LONG 2 109*0Sstevel@tonic-gate #define DP_C_LDOUBLE 3 110*0Sstevel@tonic-gate #define DP_C_LONG_LONG 4 111*0Sstevel@tonic-gate 112*0Sstevel@tonic-gate #define char_to_int(p) (p - '0') 113*0Sstevel@tonic-gate #define abs_val(p) (p < 0 ? -p : p) 114*0Sstevel@tonic-gate 115*0Sstevel@tonic-gate 116*0Sstevel@tonic-gate static void 117*0Sstevel@tonic-gate dopr(char *buffer, size_t maxlen, const char *format, va_list args) 118*0Sstevel@tonic-gate { 119*0Sstevel@tonic-gate char *strvalue; 120*0Sstevel@tonic-gate char ch; 121*0Sstevel@tonic-gate long value; 122*0Sstevel@tonic-gate long double fvalue; 123*0Sstevel@tonic-gate int min = 0; 124*0Sstevel@tonic-gate int max = -1; 125*0Sstevel@tonic-gate int state = DP_S_DEFAULT; 126*0Sstevel@tonic-gate int flags = 0; 127*0Sstevel@tonic-gate int cflags = 0; 128*0Sstevel@tonic-gate size_t currlen = 0; 129*0Sstevel@tonic-gate 130*0Sstevel@tonic-gate ch = *format++; 131*0Sstevel@tonic-gate 132*0Sstevel@tonic-gate while (state != DP_S_DONE) { 133*0Sstevel@tonic-gate if ((ch == '\0') || (currlen >= maxlen)) 134*0Sstevel@tonic-gate state = DP_S_DONE; 135*0Sstevel@tonic-gate 136*0Sstevel@tonic-gate switch(state) { 137*0Sstevel@tonic-gate case DP_S_DEFAULT: 138*0Sstevel@tonic-gate if (ch == '%') 139*0Sstevel@tonic-gate state = DP_S_FLAGS; 140*0Sstevel@tonic-gate else 141*0Sstevel@tonic-gate dopr_outch(buffer, &currlen, maxlen, ch); 142*0Sstevel@tonic-gate ch = *format++; 143*0Sstevel@tonic-gate break; 144*0Sstevel@tonic-gate case DP_S_FLAGS: 145*0Sstevel@tonic-gate switch (ch) { 146*0Sstevel@tonic-gate case '-': 147*0Sstevel@tonic-gate flags |= DP_F_MINUS; 148*0Sstevel@tonic-gate ch = *format++; 149*0Sstevel@tonic-gate break; 150*0Sstevel@tonic-gate case '+': 151*0Sstevel@tonic-gate flags |= DP_F_PLUS; 152*0Sstevel@tonic-gate ch = *format++; 153*0Sstevel@tonic-gate break; 154*0Sstevel@tonic-gate case ' ': 155*0Sstevel@tonic-gate flags |= DP_F_SPACE; 156*0Sstevel@tonic-gate ch = *format++; 157*0Sstevel@tonic-gate break; 158*0Sstevel@tonic-gate case '#': 159*0Sstevel@tonic-gate flags |= DP_F_NUM; 160*0Sstevel@tonic-gate ch = *format++; 161*0Sstevel@tonic-gate break; 162*0Sstevel@tonic-gate case '0': 163*0Sstevel@tonic-gate flags |= DP_F_ZERO; 164*0Sstevel@tonic-gate ch = *format++; 165*0Sstevel@tonic-gate break; 166*0Sstevel@tonic-gate default: 167*0Sstevel@tonic-gate state = DP_S_MIN; 168*0Sstevel@tonic-gate break; 169*0Sstevel@tonic-gate } 170*0Sstevel@tonic-gate break; 171*0Sstevel@tonic-gate case DP_S_MIN: 172*0Sstevel@tonic-gate if (isdigit((unsigned char)ch)) { 173*0Sstevel@tonic-gate min = 10*min + char_to_int (ch); 174*0Sstevel@tonic-gate ch = *format++; 175*0Sstevel@tonic-gate } else if (ch == '*') { 176*0Sstevel@tonic-gate min = va_arg (args, int); 177*0Sstevel@tonic-gate ch = *format++; 178*0Sstevel@tonic-gate state = DP_S_DOT; 179*0Sstevel@tonic-gate } else 180*0Sstevel@tonic-gate state = DP_S_DOT; 181*0Sstevel@tonic-gate break; 182*0Sstevel@tonic-gate case DP_S_DOT: 183*0Sstevel@tonic-gate if (ch == '.') { 184*0Sstevel@tonic-gate state = DP_S_MAX; 185*0Sstevel@tonic-gate ch = *format++; 186*0Sstevel@tonic-gate } else 187*0Sstevel@tonic-gate state = DP_S_MOD; 188*0Sstevel@tonic-gate break; 189*0Sstevel@tonic-gate case DP_S_MAX: 190*0Sstevel@tonic-gate if (isdigit((unsigned char)ch)) { 191*0Sstevel@tonic-gate if (max < 0) 192*0Sstevel@tonic-gate max = 0; 193*0Sstevel@tonic-gate max = 10*max + char_to_int(ch); 194*0Sstevel@tonic-gate ch = *format++; 195*0Sstevel@tonic-gate } else if (ch == '*') { 196*0Sstevel@tonic-gate max = va_arg (args, int); 197*0Sstevel@tonic-gate ch = *format++; 198*0Sstevel@tonic-gate state = DP_S_MOD; 199*0Sstevel@tonic-gate } else 200*0Sstevel@tonic-gate state = DP_S_MOD; 201*0Sstevel@tonic-gate break; 202*0Sstevel@tonic-gate case DP_S_MOD: 203*0Sstevel@tonic-gate switch (ch) { 204*0Sstevel@tonic-gate case 'h': 205*0Sstevel@tonic-gate cflags = DP_C_SHORT; 206*0Sstevel@tonic-gate ch = *format++; 207*0Sstevel@tonic-gate break; 208*0Sstevel@tonic-gate case 'l': 209*0Sstevel@tonic-gate cflags = DP_C_LONG; 210*0Sstevel@tonic-gate ch = *format++; 211*0Sstevel@tonic-gate if (ch == 'l') { 212*0Sstevel@tonic-gate cflags = DP_C_LONG_LONG; 213*0Sstevel@tonic-gate ch = *format++; 214*0Sstevel@tonic-gate } 215*0Sstevel@tonic-gate break; 216*0Sstevel@tonic-gate case 'q': 217*0Sstevel@tonic-gate cflags = DP_C_LONG_LONG; 218*0Sstevel@tonic-gate ch = *format++; 219*0Sstevel@tonic-gate break; 220*0Sstevel@tonic-gate case 'L': 221*0Sstevel@tonic-gate cflags = DP_C_LDOUBLE; 222*0Sstevel@tonic-gate ch = *format++; 223*0Sstevel@tonic-gate break; 224*0Sstevel@tonic-gate default: 225*0Sstevel@tonic-gate break; 226*0Sstevel@tonic-gate } 227*0Sstevel@tonic-gate state = DP_S_CONV; 228*0Sstevel@tonic-gate break; 229*0Sstevel@tonic-gate case DP_S_CONV: 230*0Sstevel@tonic-gate switch (ch) { 231*0Sstevel@tonic-gate case 'd': 232*0Sstevel@tonic-gate case 'i': 233*0Sstevel@tonic-gate if (cflags == DP_C_SHORT) 234*0Sstevel@tonic-gate value = va_arg(args, int); 235*0Sstevel@tonic-gate else if (cflags == DP_C_LONG) 236*0Sstevel@tonic-gate value = va_arg(args, long int); 237*0Sstevel@tonic-gate else if (cflags == DP_C_LONG_LONG) 238*0Sstevel@tonic-gate value = va_arg (args, long long); 239*0Sstevel@tonic-gate else 240*0Sstevel@tonic-gate value = va_arg (args, int); 241*0Sstevel@tonic-gate fmtint(buffer, &currlen, maxlen, value, 10, min, max, flags); 242*0Sstevel@tonic-gate break; 243*0Sstevel@tonic-gate case 'o': 244*0Sstevel@tonic-gate flags |= DP_F_UNSIGNED; 245*0Sstevel@tonic-gate if (cflags == DP_C_SHORT) 246*0Sstevel@tonic-gate value = va_arg(args, unsigned int); 247*0Sstevel@tonic-gate else if (cflags == DP_C_LONG) 248*0Sstevel@tonic-gate value = va_arg(args, unsigned long int); 249*0Sstevel@tonic-gate else if (cflags == DP_C_LONG_LONG) 250*0Sstevel@tonic-gate value = va_arg(args, unsigned long long); 251*0Sstevel@tonic-gate else 252*0Sstevel@tonic-gate value = va_arg(args, unsigned int); 253*0Sstevel@tonic-gate fmtint(buffer, &currlen, maxlen, value, 8, min, max, flags); 254*0Sstevel@tonic-gate break; 255*0Sstevel@tonic-gate case 'u': 256*0Sstevel@tonic-gate flags |= DP_F_UNSIGNED; 257*0Sstevel@tonic-gate if (cflags == DP_C_SHORT) 258*0Sstevel@tonic-gate value = va_arg(args, unsigned int); 259*0Sstevel@tonic-gate else if (cflags == DP_C_LONG) 260*0Sstevel@tonic-gate value = va_arg(args, unsigned long int); 261*0Sstevel@tonic-gate else if (cflags == DP_C_LONG_LONG) 262*0Sstevel@tonic-gate value = va_arg(args, unsigned long long); 263*0Sstevel@tonic-gate else 264*0Sstevel@tonic-gate value = va_arg(args, unsigned int); 265*0Sstevel@tonic-gate fmtint (buffer, &currlen, maxlen, value, 10, min, max, flags); 266*0Sstevel@tonic-gate break; 267*0Sstevel@tonic-gate case 'X': 268*0Sstevel@tonic-gate flags |= DP_F_UP; 269*0Sstevel@tonic-gate case 'x': 270*0Sstevel@tonic-gate flags |= DP_F_UNSIGNED; 271*0Sstevel@tonic-gate if (cflags == DP_C_SHORT) 272*0Sstevel@tonic-gate value = va_arg(args, unsigned int); 273*0Sstevel@tonic-gate else if (cflags == DP_C_LONG) 274*0Sstevel@tonic-gate value = va_arg(args, unsigned long int); 275*0Sstevel@tonic-gate else if (cflags == DP_C_LONG_LONG) 276*0Sstevel@tonic-gate value = va_arg(args, unsigned long long); 277*0Sstevel@tonic-gate else 278*0Sstevel@tonic-gate value = va_arg(args, unsigned int); 279*0Sstevel@tonic-gate fmtint(buffer, &currlen, maxlen, value, 16, min, max, flags); 280*0Sstevel@tonic-gate break; 281*0Sstevel@tonic-gate case 'f': 282*0Sstevel@tonic-gate if (cflags == DP_C_LDOUBLE) 283*0Sstevel@tonic-gate fvalue = va_arg(args, long double); 284*0Sstevel@tonic-gate else 285*0Sstevel@tonic-gate fvalue = va_arg(args, double); 286*0Sstevel@tonic-gate /* um, floating point? */ 287*0Sstevel@tonic-gate fmtfp(buffer, &currlen, maxlen, fvalue, min, max, flags); 288*0Sstevel@tonic-gate break; 289*0Sstevel@tonic-gate case 'E': 290*0Sstevel@tonic-gate flags |= DP_F_UP; 291*0Sstevel@tonic-gate case 'e': 292*0Sstevel@tonic-gate if (cflags == DP_C_LDOUBLE) 293*0Sstevel@tonic-gate fvalue = va_arg(args, long double); 294*0Sstevel@tonic-gate else 295*0Sstevel@tonic-gate fvalue = va_arg(args, double); 296*0Sstevel@tonic-gate break; 297*0Sstevel@tonic-gate case 'G': 298*0Sstevel@tonic-gate flags |= DP_F_UP; 299*0Sstevel@tonic-gate case 'g': 300*0Sstevel@tonic-gate if (cflags == DP_C_LDOUBLE) 301*0Sstevel@tonic-gate fvalue = va_arg(args, long double); 302*0Sstevel@tonic-gate else 303*0Sstevel@tonic-gate fvalue = va_arg(args, double); 304*0Sstevel@tonic-gate break; 305*0Sstevel@tonic-gate case 'c': 306*0Sstevel@tonic-gate dopr_outch(buffer, &currlen, maxlen, va_arg(args, int)); 307*0Sstevel@tonic-gate break; 308*0Sstevel@tonic-gate case 's': 309*0Sstevel@tonic-gate strvalue = va_arg(args, char *); 310*0Sstevel@tonic-gate if (max < 0) 311*0Sstevel@tonic-gate max = maxlen; /* ie, no max */ 312*0Sstevel@tonic-gate fmtstr(buffer, &currlen, maxlen, strvalue, flags, min, max); 313*0Sstevel@tonic-gate break; 314*0Sstevel@tonic-gate case 'p': 315*0Sstevel@tonic-gate strvalue = va_arg(args, void *); 316*0Sstevel@tonic-gate fmtint(buffer, &currlen, maxlen, (long) strvalue, 16, min, max, flags); 317*0Sstevel@tonic-gate break; 318*0Sstevel@tonic-gate case 'n': 319*0Sstevel@tonic-gate if (cflags == DP_C_SHORT) { 320*0Sstevel@tonic-gate short int *num; 321*0Sstevel@tonic-gate num = va_arg(args, short int *); 322*0Sstevel@tonic-gate *num = currlen; 323*0Sstevel@tonic-gate } else if (cflags == DP_C_LONG) { 324*0Sstevel@tonic-gate long int *num; 325*0Sstevel@tonic-gate num = va_arg(args, long int *); 326*0Sstevel@tonic-gate *num = currlen; 327*0Sstevel@tonic-gate } else if (cflags == DP_C_LONG_LONG) { 328*0Sstevel@tonic-gate long long *num; 329*0Sstevel@tonic-gate num = va_arg(args, long long *); 330*0Sstevel@tonic-gate *num = currlen; 331*0Sstevel@tonic-gate } else { 332*0Sstevel@tonic-gate int *num; 333*0Sstevel@tonic-gate num = va_arg(args, int *); 334*0Sstevel@tonic-gate *num = currlen; 335*0Sstevel@tonic-gate } 336*0Sstevel@tonic-gate break; 337*0Sstevel@tonic-gate case '%': 338*0Sstevel@tonic-gate dopr_outch(buffer, &currlen, maxlen, ch); 339*0Sstevel@tonic-gate break; 340*0Sstevel@tonic-gate case 'w': /* not supported yet, treat as next char */ 341*0Sstevel@tonic-gate ch = *format++; 342*0Sstevel@tonic-gate break; 343*0Sstevel@tonic-gate default: /* Unknown, skip */ 344*0Sstevel@tonic-gate break; 345*0Sstevel@tonic-gate } 346*0Sstevel@tonic-gate ch = *format++; 347*0Sstevel@tonic-gate state = DP_S_DEFAULT; 348*0Sstevel@tonic-gate flags = cflags = min = 0; 349*0Sstevel@tonic-gate max = -1; 350*0Sstevel@tonic-gate break; 351*0Sstevel@tonic-gate case DP_S_DONE: 352*0Sstevel@tonic-gate break; 353*0Sstevel@tonic-gate default: /* hmm? */ 354*0Sstevel@tonic-gate break; /* some picky compilers need this */ 355*0Sstevel@tonic-gate } 356*0Sstevel@tonic-gate } 357*0Sstevel@tonic-gate if (currlen < maxlen - 1) 358*0Sstevel@tonic-gate buffer[currlen] = '\0'; 359*0Sstevel@tonic-gate else 360*0Sstevel@tonic-gate buffer[maxlen - 1] = '\0'; 361*0Sstevel@tonic-gate } 362*0Sstevel@tonic-gate 363*0Sstevel@tonic-gate static void 364*0Sstevel@tonic-gate fmtstr(char *buffer, size_t *currlen, size_t maxlen, 365*0Sstevel@tonic-gate char *value, int flags, int min, int max) 366*0Sstevel@tonic-gate { 367*0Sstevel@tonic-gate int padlen, strln; /* amount to pad */ 368*0Sstevel@tonic-gate int cnt = 0; 369*0Sstevel@tonic-gate 370*0Sstevel@tonic-gate if (value == 0) 371*0Sstevel@tonic-gate value = "<NULL>"; 372*0Sstevel@tonic-gate 373*0Sstevel@tonic-gate for (strln = 0; value[strln]; ++strln); /* strlen */ 374*0Sstevel@tonic-gate padlen = min - strln; 375*0Sstevel@tonic-gate if (padlen < 0) 376*0Sstevel@tonic-gate padlen = 0; 377*0Sstevel@tonic-gate if (flags & DP_F_MINUS) 378*0Sstevel@tonic-gate padlen = -padlen; /* Left Justify */ 379*0Sstevel@tonic-gate 380*0Sstevel@tonic-gate while ((padlen > 0) && (cnt < max)) { 381*0Sstevel@tonic-gate dopr_outch(buffer, currlen, maxlen, ' '); 382*0Sstevel@tonic-gate --padlen; 383*0Sstevel@tonic-gate ++cnt; 384*0Sstevel@tonic-gate } 385*0Sstevel@tonic-gate while (*value && (cnt < max)) { 386*0Sstevel@tonic-gate dopr_outch(buffer, currlen, maxlen, *value++); 387*0Sstevel@tonic-gate ++cnt; 388*0Sstevel@tonic-gate } 389*0Sstevel@tonic-gate while ((padlen < 0) && (cnt < max)) { 390*0Sstevel@tonic-gate dopr_outch(buffer, currlen, maxlen, ' '); 391*0Sstevel@tonic-gate ++padlen; 392*0Sstevel@tonic-gate ++cnt; 393*0Sstevel@tonic-gate } 394*0Sstevel@tonic-gate } 395*0Sstevel@tonic-gate 396*0Sstevel@tonic-gate /* Have to handle DP_F_NUM (ie 0x and 0 alternates) */ 397*0Sstevel@tonic-gate 398*0Sstevel@tonic-gate static void 399*0Sstevel@tonic-gate fmtint(char *buffer, size_t *currlen, size_t maxlen, 400*0Sstevel@tonic-gate long value, int base, int min, int max, int flags) 401*0Sstevel@tonic-gate { 402*0Sstevel@tonic-gate unsigned long uvalue; 403*0Sstevel@tonic-gate char convert[20]; 404*0Sstevel@tonic-gate int signvalue = 0; 405*0Sstevel@tonic-gate int place = 0; 406*0Sstevel@tonic-gate int spadlen = 0; /* amount to space pad */ 407*0Sstevel@tonic-gate int zpadlen = 0; /* amount to zero pad */ 408*0Sstevel@tonic-gate int caps = 0; 409*0Sstevel@tonic-gate 410*0Sstevel@tonic-gate if (max < 0) 411*0Sstevel@tonic-gate max = 0; 412*0Sstevel@tonic-gate 413*0Sstevel@tonic-gate uvalue = value; 414*0Sstevel@tonic-gate 415*0Sstevel@tonic-gate if (!(flags & DP_F_UNSIGNED)) { 416*0Sstevel@tonic-gate if (value < 0) { 417*0Sstevel@tonic-gate signvalue = '-'; 418*0Sstevel@tonic-gate uvalue = -value; 419*0Sstevel@tonic-gate } else if (flags & DP_F_PLUS) /* Do a sign (+/i) */ 420*0Sstevel@tonic-gate signvalue = '+'; 421*0Sstevel@tonic-gate else if (flags & DP_F_SPACE) 422*0Sstevel@tonic-gate signvalue = ' '; 423*0Sstevel@tonic-gate } 424*0Sstevel@tonic-gate 425*0Sstevel@tonic-gate if (flags & DP_F_UP) 426*0Sstevel@tonic-gate caps = 1; /* Should characters be upper case? */ 427*0Sstevel@tonic-gate 428*0Sstevel@tonic-gate do { 429*0Sstevel@tonic-gate convert[place++] = 430*0Sstevel@tonic-gate (caps? "0123456789ABCDEF":"0123456789abcdef") 431*0Sstevel@tonic-gate [uvalue % (unsigned)base]; 432*0Sstevel@tonic-gate uvalue = (uvalue / (unsigned)base ); 433*0Sstevel@tonic-gate } while (uvalue && (place < 20)); 434*0Sstevel@tonic-gate if (place == 20) 435*0Sstevel@tonic-gate place--; 436*0Sstevel@tonic-gate convert[place] = 0; 437*0Sstevel@tonic-gate 438*0Sstevel@tonic-gate zpadlen = max - place; 439*0Sstevel@tonic-gate spadlen = min - MAX (max, place) - (signvalue ? 1 : 0); 440*0Sstevel@tonic-gate if (zpadlen < 0) 441*0Sstevel@tonic-gate zpadlen = 0; 442*0Sstevel@tonic-gate if (spadlen < 0) 443*0Sstevel@tonic-gate spadlen = 0; 444*0Sstevel@tonic-gate if (flags & DP_F_ZERO) { 445*0Sstevel@tonic-gate zpadlen = MAX(zpadlen, spadlen); 446*0Sstevel@tonic-gate spadlen = 0; 447*0Sstevel@tonic-gate } 448*0Sstevel@tonic-gate if (flags & DP_F_MINUS) 449*0Sstevel@tonic-gate spadlen = -spadlen; /* Left Justifty */ 450*0Sstevel@tonic-gate 451*0Sstevel@tonic-gate 452*0Sstevel@tonic-gate /* Spaces */ 453*0Sstevel@tonic-gate while (spadlen > 0) { 454*0Sstevel@tonic-gate dopr_outch(buffer, currlen, maxlen, ' '); 455*0Sstevel@tonic-gate --spadlen; 456*0Sstevel@tonic-gate } 457*0Sstevel@tonic-gate 458*0Sstevel@tonic-gate /* Sign */ 459*0Sstevel@tonic-gate if (signvalue) 460*0Sstevel@tonic-gate dopr_outch(buffer, currlen, maxlen, signvalue); 461*0Sstevel@tonic-gate 462*0Sstevel@tonic-gate /* Zeros */ 463*0Sstevel@tonic-gate if (zpadlen > 0) { 464*0Sstevel@tonic-gate while (zpadlen > 0) { 465*0Sstevel@tonic-gate dopr_outch(buffer, currlen, maxlen, '0'); 466*0Sstevel@tonic-gate --zpadlen; 467*0Sstevel@tonic-gate } 468*0Sstevel@tonic-gate } 469*0Sstevel@tonic-gate 470*0Sstevel@tonic-gate /* Digits */ 471*0Sstevel@tonic-gate while (place > 0) 472*0Sstevel@tonic-gate dopr_outch(buffer, currlen, maxlen, convert[--place]); 473*0Sstevel@tonic-gate 474*0Sstevel@tonic-gate /* Left Justified spaces */ 475*0Sstevel@tonic-gate while (spadlen < 0) { 476*0Sstevel@tonic-gate dopr_outch (buffer, currlen, maxlen, ' '); 477*0Sstevel@tonic-gate ++spadlen; 478*0Sstevel@tonic-gate } 479*0Sstevel@tonic-gate } 480*0Sstevel@tonic-gate 481*0Sstevel@tonic-gate static long double 482*0Sstevel@tonic-gate pow10(int exp) 483*0Sstevel@tonic-gate { 484*0Sstevel@tonic-gate long double result = 1; 485*0Sstevel@tonic-gate 486*0Sstevel@tonic-gate while (exp) { 487*0Sstevel@tonic-gate result *= 10; 488*0Sstevel@tonic-gate exp--; 489*0Sstevel@tonic-gate } 490*0Sstevel@tonic-gate 491*0Sstevel@tonic-gate return result; 492*0Sstevel@tonic-gate } 493*0Sstevel@tonic-gate 494*0Sstevel@tonic-gate static long 495*0Sstevel@tonic-gate round(long double value) 496*0Sstevel@tonic-gate { 497*0Sstevel@tonic-gate long intpart = value; 498*0Sstevel@tonic-gate 499*0Sstevel@tonic-gate value -= intpart; 500*0Sstevel@tonic-gate if (value >= 0.5) 501*0Sstevel@tonic-gate intpart++; 502*0Sstevel@tonic-gate 503*0Sstevel@tonic-gate return intpart; 504*0Sstevel@tonic-gate } 505*0Sstevel@tonic-gate 506*0Sstevel@tonic-gate static void 507*0Sstevel@tonic-gate fmtfp(char *buffer, size_t *currlen, size_t maxlen, long double fvalue, 508*0Sstevel@tonic-gate int min, int max, int flags) 509*0Sstevel@tonic-gate { 510*0Sstevel@tonic-gate char iconvert[20]; 511*0Sstevel@tonic-gate char fconvert[20]; 512*0Sstevel@tonic-gate int signvalue = 0; 513*0Sstevel@tonic-gate int iplace = 0; 514*0Sstevel@tonic-gate int fplace = 0; 515*0Sstevel@tonic-gate int padlen = 0; /* amount to pad */ 516*0Sstevel@tonic-gate int zpadlen = 0; 517*0Sstevel@tonic-gate int caps = 0; 518*0Sstevel@tonic-gate long intpart; 519*0Sstevel@tonic-gate long fracpart; 520*0Sstevel@tonic-gate long double ufvalue; 521*0Sstevel@tonic-gate 522*0Sstevel@tonic-gate /* 523*0Sstevel@tonic-gate * AIX manpage says the default is 0, but Solaris says the default 524*0Sstevel@tonic-gate * is 6, and sprintf on AIX defaults to 6 525*0Sstevel@tonic-gate */ 526*0Sstevel@tonic-gate if (max < 0) 527*0Sstevel@tonic-gate max = 6; 528*0Sstevel@tonic-gate 529*0Sstevel@tonic-gate ufvalue = abs_val(fvalue); 530*0Sstevel@tonic-gate 531*0Sstevel@tonic-gate if (fvalue < 0) 532*0Sstevel@tonic-gate signvalue = '-'; 533*0Sstevel@tonic-gate else if (flags & DP_F_PLUS) /* Do a sign (+/i) */ 534*0Sstevel@tonic-gate signvalue = '+'; 535*0Sstevel@tonic-gate else if (flags & DP_F_SPACE) 536*0Sstevel@tonic-gate signvalue = ' '; 537*0Sstevel@tonic-gate 538*0Sstevel@tonic-gate intpart = ufvalue; 539*0Sstevel@tonic-gate 540*0Sstevel@tonic-gate /* 541*0Sstevel@tonic-gate * Sorry, we only support 9 digits past the decimal because of our 542*0Sstevel@tonic-gate * conversion method 543*0Sstevel@tonic-gate */ 544*0Sstevel@tonic-gate if (max > 9) 545*0Sstevel@tonic-gate max = 9; 546*0Sstevel@tonic-gate 547*0Sstevel@tonic-gate /* We "cheat" by converting the fractional part to integer by 548*0Sstevel@tonic-gate * multiplying by a factor of 10 549*0Sstevel@tonic-gate */ 550*0Sstevel@tonic-gate fracpart = round((pow10 (max)) * (ufvalue - intpart)); 551*0Sstevel@tonic-gate 552*0Sstevel@tonic-gate if (fracpart >= pow10 (max)) { 553*0Sstevel@tonic-gate intpart++; 554*0Sstevel@tonic-gate fracpart -= pow10 (max); 555*0Sstevel@tonic-gate } 556*0Sstevel@tonic-gate 557*0Sstevel@tonic-gate /* Convert integer part */ 558*0Sstevel@tonic-gate do { 559*0Sstevel@tonic-gate iconvert[iplace++] = 560*0Sstevel@tonic-gate (caps? "0123456789ABCDEF":"0123456789abcdef")[intpart % 10]; 561*0Sstevel@tonic-gate intpart = (intpart / 10); 562*0Sstevel@tonic-gate } while(intpart && (iplace < 20)); 563*0Sstevel@tonic-gate if (iplace == 20) 564*0Sstevel@tonic-gate iplace--; 565*0Sstevel@tonic-gate iconvert[iplace] = 0; 566*0Sstevel@tonic-gate 567*0Sstevel@tonic-gate /* Convert fractional part */ 568*0Sstevel@tonic-gate do { 569*0Sstevel@tonic-gate fconvert[fplace++] = 570*0Sstevel@tonic-gate (caps? "0123456789ABCDEF":"0123456789abcdef")[fracpart % 10]; 571*0Sstevel@tonic-gate fracpart = (fracpart / 10); 572*0Sstevel@tonic-gate } while(fracpart && (fplace < 20)); 573*0Sstevel@tonic-gate if (fplace == 20) 574*0Sstevel@tonic-gate fplace--; 575*0Sstevel@tonic-gate fconvert[fplace] = 0; 576*0Sstevel@tonic-gate 577*0Sstevel@tonic-gate /* -1 for decimal point, another -1 if we are printing a sign */ 578*0Sstevel@tonic-gate padlen = min - iplace - max - 1 - ((signvalue) ? 1 : 0); 579*0Sstevel@tonic-gate zpadlen = max - fplace; 580*0Sstevel@tonic-gate if (zpadlen < 0) 581*0Sstevel@tonic-gate zpadlen = 0; 582*0Sstevel@tonic-gate if (padlen < 0) 583*0Sstevel@tonic-gate padlen = 0; 584*0Sstevel@tonic-gate if (flags & DP_F_MINUS) 585*0Sstevel@tonic-gate padlen = -padlen; /* Left Justifty */ 586*0Sstevel@tonic-gate 587*0Sstevel@tonic-gate if ((flags & DP_F_ZERO) && (padlen > 0)) { 588*0Sstevel@tonic-gate if (signvalue) { 589*0Sstevel@tonic-gate dopr_outch(buffer, currlen, maxlen, signvalue); 590*0Sstevel@tonic-gate --padlen; 591*0Sstevel@tonic-gate signvalue = 0; 592*0Sstevel@tonic-gate } 593*0Sstevel@tonic-gate while (padlen > 0) { 594*0Sstevel@tonic-gate dopr_outch(buffer, currlen, maxlen, '0'); 595*0Sstevel@tonic-gate --padlen; 596*0Sstevel@tonic-gate } 597*0Sstevel@tonic-gate } 598*0Sstevel@tonic-gate while (padlen > 0) { 599*0Sstevel@tonic-gate dopr_outch(buffer, currlen, maxlen, ' '); 600*0Sstevel@tonic-gate --padlen; 601*0Sstevel@tonic-gate } 602*0Sstevel@tonic-gate if (signvalue) 603*0Sstevel@tonic-gate dopr_outch(buffer, currlen, maxlen, signvalue); 604*0Sstevel@tonic-gate 605*0Sstevel@tonic-gate while (iplace > 0) 606*0Sstevel@tonic-gate dopr_outch(buffer, currlen, maxlen, iconvert[--iplace]); 607*0Sstevel@tonic-gate 608*0Sstevel@tonic-gate /* 609*0Sstevel@tonic-gate * Decimal point. This should probably use locale to find the correct 610*0Sstevel@tonic-gate * char to print out. 611*0Sstevel@tonic-gate */ 612*0Sstevel@tonic-gate dopr_outch(buffer, currlen, maxlen, '.'); 613*0Sstevel@tonic-gate 614*0Sstevel@tonic-gate while (fplace > 0) 615*0Sstevel@tonic-gate dopr_outch(buffer, currlen, maxlen, fconvert[--fplace]); 616*0Sstevel@tonic-gate 617*0Sstevel@tonic-gate while (zpadlen > 0) { 618*0Sstevel@tonic-gate dopr_outch(buffer, currlen, maxlen, '0'); 619*0Sstevel@tonic-gate --zpadlen; 620*0Sstevel@tonic-gate } 621*0Sstevel@tonic-gate 622*0Sstevel@tonic-gate while (padlen < 0) { 623*0Sstevel@tonic-gate dopr_outch(buffer, currlen, maxlen, ' '); 624*0Sstevel@tonic-gate ++padlen; 625*0Sstevel@tonic-gate } 626*0Sstevel@tonic-gate } 627*0Sstevel@tonic-gate 628*0Sstevel@tonic-gate static void 629*0Sstevel@tonic-gate dopr_outch(char *buffer, size_t *currlen, size_t maxlen, char c) 630*0Sstevel@tonic-gate { 631*0Sstevel@tonic-gate if (*currlen < maxlen) 632*0Sstevel@tonic-gate buffer[(*currlen)++] = c; 633*0Sstevel@tonic-gate } 634*0Sstevel@tonic-gate #endif /* !defined(HAVE_SNPRINTF) || !defined(HAVE_VSNPRINTF) */ 635*0Sstevel@tonic-gate 636*0Sstevel@tonic-gate #ifndef HAVE_VSNPRINTF 637*0Sstevel@tonic-gate int 638*0Sstevel@tonic-gate vsnprintf(char *str, size_t count, const char *fmt, va_list args) 639*0Sstevel@tonic-gate { 640*0Sstevel@tonic-gate str[0] = 0; 641*0Sstevel@tonic-gate dopr(str, count, fmt, args); 642*0Sstevel@tonic-gate 643*0Sstevel@tonic-gate return(strlen(str)); 644*0Sstevel@tonic-gate } 645*0Sstevel@tonic-gate #endif /* !HAVE_VSNPRINTF */ 646*0Sstevel@tonic-gate 647*0Sstevel@tonic-gate #ifndef HAVE_SNPRINTF 648*0Sstevel@tonic-gate int 649*0Sstevel@tonic-gate snprintf(char *str,size_t count,const char *fmt,...) 650*0Sstevel@tonic-gate { 651*0Sstevel@tonic-gate va_list ap; 652*0Sstevel@tonic-gate 653*0Sstevel@tonic-gate va_start(ap, fmt); 654*0Sstevel@tonic-gate (void) vsnprintf(str, count, fmt, ap); 655*0Sstevel@tonic-gate va_end(ap); 656*0Sstevel@tonic-gate 657*0Sstevel@tonic-gate return(strlen(str)); 658*0Sstevel@tonic-gate } 659*0Sstevel@tonic-gate 660*0Sstevel@tonic-gate #ifdef TEST_SNPRINTF 661*0Sstevel@tonic-gate int 662*0Sstevel@tonic-gate main(void) 663*0Sstevel@tonic-gate { 664*0Sstevel@tonic-gate #define LONG_STRING 1024 665*0Sstevel@tonic-gate char buf1[LONG_STRING]; 666*0Sstevel@tonic-gate char buf2[LONG_STRING]; 667*0Sstevel@tonic-gate char *fp_fmt[] = { 668*0Sstevel@tonic-gate "%-1.5f", 669*0Sstevel@tonic-gate "%1.5f", 670*0Sstevel@tonic-gate "%123.9f", 671*0Sstevel@tonic-gate "%10.5f", 672*0Sstevel@tonic-gate "% 10.5f", 673*0Sstevel@tonic-gate "%+22.9f", 674*0Sstevel@tonic-gate "%+4.9f", 675*0Sstevel@tonic-gate "%01.3f", 676*0Sstevel@tonic-gate "%4f", 677*0Sstevel@tonic-gate "%3.1f", 678*0Sstevel@tonic-gate "%3.2f", 679*0Sstevel@tonic-gate NULL 680*0Sstevel@tonic-gate }; 681*0Sstevel@tonic-gate double fp_nums[] = { 682*0Sstevel@tonic-gate -1.5, 683*0Sstevel@tonic-gate 134.21, 684*0Sstevel@tonic-gate 91340.2, 685*0Sstevel@tonic-gate 341.1234, 686*0Sstevel@tonic-gate 0203.9, 687*0Sstevel@tonic-gate 0.96, 688*0Sstevel@tonic-gate 0.996, 689*0Sstevel@tonic-gate 0.9996, 690*0Sstevel@tonic-gate 1.996, 691*0Sstevel@tonic-gate 4.136, 692*0Sstevel@tonic-gate 0 693*0Sstevel@tonic-gate }; 694*0Sstevel@tonic-gate char *int_fmt[] = { 695*0Sstevel@tonic-gate "%-1.5d", 696*0Sstevel@tonic-gate "%1.5d", 697*0Sstevel@tonic-gate "%123.9d", 698*0Sstevel@tonic-gate "%5.5d", 699*0Sstevel@tonic-gate "%10.5d", 700*0Sstevel@tonic-gate "% 10.5d", 701*0Sstevel@tonic-gate "%+22.33d", 702*0Sstevel@tonic-gate "%01.3d", 703*0Sstevel@tonic-gate "%4d", 704*0Sstevel@tonic-gate "%lld", 705*0Sstevel@tonic-gate "%qd", 706*0Sstevel@tonic-gate NULL 707*0Sstevel@tonic-gate }; 708*0Sstevel@tonic-gate long long int_nums[] = { -1, 134, 91340, 341, 0203, 0, 9999999 }; 709*0Sstevel@tonic-gate int x, y; 710*0Sstevel@tonic-gate int fail = 0; 711*0Sstevel@tonic-gate int num = 0; 712*0Sstevel@tonic-gate 713*0Sstevel@tonic-gate printf("Testing snprintf format codes against system sprintf...\n"); 714*0Sstevel@tonic-gate 715*0Sstevel@tonic-gate for (x = 0; fp_fmt[x] != NULL ; x++) { 716*0Sstevel@tonic-gate for (y = 0; fp_nums[y] != 0 ; y++) { 717*0Sstevel@tonic-gate snprintf(buf1, sizeof (buf1), fp_fmt[x], fp_nums[y]); 718*0Sstevel@tonic-gate sprintf (buf2, fp_fmt[x], fp_nums[y]); 719*0Sstevel@tonic-gate if (strcmp (buf1, buf2)) { 720*0Sstevel@tonic-gate printf("snprintf doesn't match Format: %s\n\t" 721*0Sstevel@tonic-gate "snprintf = %s\n\tsprintf = %s\n", 722*0Sstevel@tonic-gate fp_fmt[x], buf1, buf2); 723*0Sstevel@tonic-gate fail++; 724*0Sstevel@tonic-gate } 725*0Sstevel@tonic-gate num++; 726*0Sstevel@tonic-gate } 727*0Sstevel@tonic-gate } 728*0Sstevel@tonic-gate for (x = 0; int_fmt[x] != NULL ; x++) { 729*0Sstevel@tonic-gate for (y = 0; int_nums[y] != 0 ; y++) { 730*0Sstevel@tonic-gate snprintf(buf1, sizeof (buf1), int_fmt[x], int_nums[y]); 731*0Sstevel@tonic-gate sprintf(buf2, int_fmt[x], int_nums[y]); 732*0Sstevel@tonic-gate if (strcmp (buf1, buf2)) { 733*0Sstevel@tonic-gate printf("snprintf doesn't match Format: %s\n\t" 734*0Sstevel@tonic-gate "snprintf = %s\n\tsprintf = %s\n", 735*0Sstevel@tonic-gate int_fmt[x], buf1, buf2); 736*0Sstevel@tonic-gate fail++; 737*0Sstevel@tonic-gate } 738*0Sstevel@tonic-gate num++; 739*0Sstevel@tonic-gate } 740*0Sstevel@tonic-gate } 741*0Sstevel@tonic-gate printf("%d tests failed out of %d.\n", fail, num); 742*0Sstevel@tonic-gate return(0); 743*0Sstevel@tonic-gate } 744*0Sstevel@tonic-gate #endif /* SNPRINTF_TEST */ 745*0Sstevel@tonic-gate 746*0Sstevel@tonic-gate #endif /* !HAVE_SNPRINTF */ 747