dlls/msvcrt/string.c

   1 /*
   2  * MSVCRT string functions
   3  *
   4  * Copyright 1996,1998 Marcus Meissner
   5  * Copyright 1996 Jukka Iivonen
   6  * Copyright 1997,2000 Uwe Bonnes
   7  * Copyright 2000 Jon Griffiths
   8  *
   9  * This library is free software; you can redistribute it and/or
  10  * modify it under the terms of the GNU Lesser General Public
  11  * License as published by the Free Software Foundation; either
  12  * version 2.1 of the License, or (at your option) any later version.
  13  *
  14  * This library is distributed in the hope that it will be useful,
  15  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  16  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  17  * Lesser General Public License for more details.
  18  *
  19  * You should have received a copy of the GNU Lesser General Public
  20  * License along with this library; if not, write to the Free Software
  21  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
  22  */
  23
  24 #define _ISOC99_SOURCE
  25 #include "config.h"
  26 #include "wine/port.h"
  27
  28 #include <stdlib.h>
  29 #include <stdio.h>
  30 #include <math.h>
  31 #include <limits.h>
  32 #include <errno.h>
  33 #include "msvcrt.h"
  34 #include "wine/debug.h"
  35
  36 WINE_DEFAULT_DEBUG_CHANNEL(msvcrt);
  37
  38 /*********************************************************************
  39  *              _mbsdup (MSVCRT.@)
  40  *              _strdup (MSVCRT.@)
  41  */
  42 char* CDECL _strdup(const char* str)
  43 {
  44     if(str)
  45     {
  46       char * ret = MSVCRT_malloc(strlen(str)+1);
  47       if (ret) strcpy( ret, str );
  48       return ret;
  49     }
  50     else return 0;
  51 }
  52
  53 /*********************************************************************
  54  *              _strnset (MSVCRT.@)
  55  */
  56 char* CDECL MSVCRT__strnset(char* str, int value, MSVCRT_size_t len)
  57 {
  58   if (len > 0 && str)
  59     while (*str && len--)
  60       *str++ = value;
  61   return str;
  62 }
  63
  64 /*********************************************************************
  65  *              _strrev (MSVCRT.@)
  66  */
  67 char* CDECL _strrev(char* str)
  68 {
  69   char * p1;
  70   char * p2;
  71
  72   if (str && *str)
  73     for (p1 = str, p2 = str + strlen(str) - 1; p2 > p1; ++p1, --p2)
  74     {
  75       *p1 ^= *p2;
  76       *p2 ^= *p1;
  77       *p1 ^= *p2;
  78     }
  79
  80   return str;
  81 }
  82
  83 /*********************************************************************
  84  *              _strset (MSVCRT.@)
  85  */
  86 char* CDECL _strset(char* str, int value)
  87 {
  88   char *ptr = str;
  89   while (*ptr)
  90     *ptr++ = value;
  91
  92   return str;
  93 }
  94
  95 /*********************************************************************
  96  *              strtok  (MSVCRT.@)
  97  */
  98 char * CDECL MSVCRT_strtok( char *str, const char *delim )
  99 {
 100     thread_data_t *data = msvcrt_get_thread_data();
 101     char *ret;
 102
 103     if (!str)
 104         if (!(str = data->strtok_next)) return NULL;
 105
 106     while (*str && strchr( delim, *str )) str++;
 107     if (!*str) return NULL;
 108     ret = str++;
 109     while (*str && !strchr( delim, *str )) str++;
 110     if (*str) *str++ = 0;
 111     data->strtok_next = str;
 112     return ret;
 113 }
 114
 115 /*********************************************************************
 116  *              strtok_s  (MSVCRT.@)
 117  */
 118 char * CDECL MSVCRT_strtok_s(char *str, const char *delim, char **ctx)
 119 {
 120     if(!delim || !ctx || (!str && !*ctx)) {
 121         MSVCRT__invalid_parameter(NULL, NULL, NULL, 0, 0);
 122         *MSVCRT__errno() = MSVCRT_EINVAL;
 123         return NULL;
 124     }
 125
 126     if(!str)
 127         str = *ctx;
 128
 129     while(*str && strchr(delim, *str))
 130         str++;
 131     if(!*str)
 132         return NULL;
 133
 134     *ctx = str+1;
 135     while(**ctx && !strchr(delim, **ctx))
 136         (*ctx)++;
 137     if(**ctx)
 138         *(*ctx)++ = 0;
 139
 140     return str;
 141 }
 142
 143 /*********************************************************************
 144  *              _swab (MSVCRT.@)
 145  */
 146 void CDECL MSVCRT__swab(char* src, char* dst, int len)
 147 {
 148   if (len > 1)
 149   {
 150     len = (unsigned)len >> 1;
 151
 152     while (len--) {
 153       char s0 = src[0];
 154       char s1 = src[1];
 155       *dst++ = s1;
 156       *dst++ = s0;
 157       src = src + 2;
 158     }
 159   }
 160 }
 161
 162 /*********************************************************************
 163  *              strtod_l  (MSVCRT.@)
 164  */
 165 double CDECL MSVCRT_strtod_l( const char *str, char **end, MSVCRT__locale_t locale)
 166 {
 167     unsigned __int64 d=0, hlp;
 168     unsigned fpcontrol;
 169     int exp=0, sign=1;
 170     const char *p;
 171     double ret;
 172
 173     if(!str) {
 174         MSVCRT__invalid_parameter(NULL, NULL, NULL, 0, 0);
 175         *MSVCRT__errno() = MSVCRT_EINVAL;
 176         return 0;
 177     }
 178
 179     if(!locale)
 180         locale = get_locale();
 181
 182     /* FIXME: use *_l functions */
 183     p = str;
 184     while(isspace(*p))
 185         p++;
 186
 187     if(*p == '-') {
 188         sign = -1;
 189         p++;
 190     } else  if(*p == '+')
 191         p++;
 192
 193     while(isdigit(*p)) {
 194         hlp = d*10+*(p++)-'0';
 195         if(d>MSVCRT_UI64_MAX/10 || hlp<d) {
 196             exp++;
 197             break;
 198         } else
 199             d = hlp;
 200     }
 201     while(isdigit(*p)) {
 202         exp++;
 203         p++;
 204     }
 205
 206     if(*p == *locale->locinfo->lconv->decimal_point)
 207         p++;
 208
 209     while(isdigit(*p)) {
 210         hlp = d*10+*(p++)-'0';
 211         if(d>MSVCRT_UI64_MAX/10 || hlp<d)
 212             break;
 213
 214         d = hlp;
 215         exp--;
 216     }
 217     while(isdigit(*p))
 218         p++;
 219
 220     if(p == str) {
 221         if(end)
 222             *end = (char*)str;
 223         return 0.0;
 224     }
 225
 226     if(*p=='e' || *p=='E' || *p=='d' || *p=='D') {
 227         int e=0, s=1;
 228
 229         p++;
 230         if(*p == '-') {
 231             s = -1;
 232             p++;
 233         } else if(*p == '+')
 234             p++;
 235
 236         if(isdigit(*p)) {
 237             while(isdigit(*p)) {
 238                 if(e>INT_MAX/10 || (e=e*10+*p-'0')<0)
 239                     e = INT_MAX;
 240                 p++;
 241             }
 242             e *= s;
 243
 244             if(exp<0 && e<0 && exp+e>=0) exp = INT_MIN;
 245             else if(exp>0 && e>0 && exp+e<0) exp = INT_MAX;
 246             else exp += e;
 247         } else {
 248             if(*p=='-' || *p=='+')
 249                 p--;
 250             p--;
 251         }
 252     }
 253
 254     fpcontrol = _control87(0, 0);
 255     _control87(MSVCRT__EM_DENORMAL|MSVCRT__EM_INVALID|MSVCRT__EM_ZERODIVIDE
 256             |MSVCRT__EM_OVERFLOW|MSVCRT__EM_UNDERFLOW|MSVCRT__EM_INEXACT, 0xffffffff);
 257
 258     if(exp>0)
 259         ret = (double)sign*d*pow(10, exp);
 260     else
 261         ret = (double)sign*d/pow(10, -exp);
 262
 263     _control87(fpcontrol, 0xffffffff);
 264
 265     if((d && ret==0.0) || isinf(ret))
 266         *MSVCRT__errno() = MSVCRT_ERANGE;
 267
 268     if(end)
 269         *end = (char*)p;
 270
 271     return ret;
 272 }
 273
 274 /*********************************************************************
 275  *              strtod  (MSVCRT.@)
 276  */
 277 double CDECL MSVCRT_strtod( const char *str, char **end )
 278 {
 279     return MSVCRT_strtod_l( str, end, NULL );
 280 }
 281
 282 /*********************************************************************
 283  *              atof  (MSVCRT.@)
 284  */
 285 double CDECL MSVCRT_atof( const char *str )
 286 {
 287     return MSVCRT_strtod_l(str, NULL, NULL);
 288 }
 289
 290 /*********************************************************************
 291  *              _atof_l  (MSVCRT.@)
 292  */
 293 double CDECL MSVCRT__atof_l( const char *str, MSVCRT__locale_t locale)
 294 {
 295     return MSVCRT_strtod_l(str, NULL, locale);
 296 }
 297
 298 /*********************************************************************
 299  *              strcoll (MSVCRT.@)
 300  */
 301 int CDECL MSVCRT_strcoll( const char* str1, const char* str2 )
 302 {
 303     /* FIXME: handle Windows locale */
 304     return strcoll( str1, str2 );
 305 }
 306
 307 /*********************************************************************
 308  *      strcpy_s (MSVCRT.@)
 309  */
 310 int CDECL MSVCRT_strcpy_s( char* dst, MSVCRT_size_t elem, const char* src )
 311 {
 312     MSVCRT_size_t i;
 313     if(!elem) return MSVCRT_EINVAL;
 314     if(!dst) return MSVCRT_EINVAL;
 315     if(!src)
 316     {
 317         dst[0] = '\0';
 318         return MSVCRT_EINVAL;
 319     }
 320
 321     for(i = 0; i < elem; i++)
 322     {
 323         if((dst[i] = src[i]) == '\0') return 0;
 324     }
 325     dst[0] = '\0';
 326     return MSVCRT_ERANGE;
 327 }
 328
 329 /*********************************************************************
 330  *      strcat_s (MSVCRT.@)
 331  */
 332 int CDECL MSVCRT_strcat_s( char* dst, MSVCRT_size_t elem, const char* src )
 333 {
 334     MSVCRT_size_t i, j;
 335     if(!dst) return MSVCRT_EINVAL;
 336     if(elem == 0) return MSVCRT_EINVAL;
 337     if(!src)
 338     {
 339         dst[0] = '\0';
 340         return MSVCRT_EINVAL;
 341     }
 342
 343     for(i = 0; i < elem; i++)
 344     {
 345         if(dst[i] == '\0')
 346         {
 347             for(j = 0; (j + i) < elem; j++)
 348             {
 349                 if((dst[j + i] = src[j]) == '\0') return 0;
 350             }
 351         }
 352     }
 353     /* Set the first element to 0, not the first element after the skipped part */
 354     dst[0] = '\0';
 355     return MSVCRT_ERANGE;
 356 }
 357
 358 /*********************************************************************
 359  *              strxfrm (MSVCRT.@)
 360  */
 361 MSVCRT_size_t CDECL MSVCRT_strxfrm( char *dest, const char *src, MSVCRT_size_t len )
 362 {
 363     /* FIXME: handle Windows locale */
 364     return strxfrm( dest, src, len );
 365 }
 366
 367 /*********************************************************************
 368  *              _stricoll (MSVCRT.@)
 369  */
 370 int CDECL MSVCRT__stricoll( const char* str1, const char* str2 )
 371 {
 372   /* FIXME: handle collates */
 373   TRACE("str1 %s str2 %s\n", debugstr_a(str1), debugstr_a(str2));
 374   return lstrcmpiA( str1, str2 );
 375 }
 376
 377 /********************************************************************
 378  *              _atoldbl (MSVCRT.@)
 379  */
 380 int CDECL MSVCRT__atoldbl(MSVCRT__LDOUBLE *value, const char *str)
 381 {
 382   /* FIXME needs error checking for huge/small values */
 383 #ifdef HAVE_STRTOLD
 384   TRACE("str %s value %p\n",str,value);
 385   value->x = strtold(str,0);
 386 #else
 387   FIXME("stub, str %s value %p\n",str,value);
 388 #endif
 389   return 0;
 390 }
 391
 392 /********************************************************************
 393  *              __STRINGTOLD (MSVCRT.@)
 394  */
 395 int CDECL __STRINGTOLD( MSVCRT__LDOUBLE *value, char **endptr, const char *str, int flags )
 396 {
 397 #ifdef HAVE_STRTOLD
 398     FIXME("%p %p %s %x partial stub\n", value, endptr, str, flags );
 399     value->x = strtold(str,endptr);
 400 #else
 401     FIXME("%p %p %s %x stub\n", value, endptr, str, flags );
 402 #endif
 403     return 0;
 404 }
 405
 406 /******************************************************************
 407  *              strtol (MSVCRT.@)
 408  */
 409 MSVCRT_long CDECL MSVCRT_strtol(const char* nptr, char** end, int base)
 410 {
 411     /* wrapper to forward libc error code to msvcrt's error codes */
 412     long ret;
 413
 414     errno = 0;
 415     ret = strtol(nptr, end, base);
 416     switch (errno)
 417     {
 418     case ERANGE:        *MSVCRT__errno() = MSVCRT_ERANGE;       break;
 419     case EINVAL:        *MSVCRT__errno() = MSVCRT_EINVAL;       break;
 420     default:
 421         /* cope with the fact that we may use 64bit long integers on libc
 422          * while msvcrt always uses 32bit long integers
 423          */
 424         if (ret > MSVCRT_LONG_MAX)
 425         {
 426             ret = MSVCRT_LONG_MAX;
 427             *MSVCRT__errno() = MSVCRT_ERANGE;
 428         }
 429         else if (ret < -MSVCRT_LONG_MAX - 1)
 430         {
 431             ret = -MSVCRT_LONG_MAX - 1;
 432             *MSVCRT__errno() = MSVCRT_ERANGE;
 433         }
 434         break;
 435     }
 436
 437     return ret;
 438 }
 439
 440 /******************************************************************
 441  *              strtoul (MSVCRT.@)
 442  */
 443 MSVCRT_ulong CDECL MSVCRT_strtoul(const char* nptr, char** end, int base)
 444 {
 445     /* wrapper to forward libc error code to msvcrt's error codes */
 446     unsigned long ret;
 447
 448     errno = 0;
 449     ret = strtoul(nptr, end, base);
 450     switch (errno)
 451     {
 452     case ERANGE:        *MSVCRT__errno() = MSVCRT_ERANGE;       break;
 453     case EINVAL:        *MSVCRT__errno() = MSVCRT_EINVAL;       break;
 454     default:
 455         /* cope with the fact that we may use 64bit long integers on libc
 456          * while msvcrt always uses 32bit long integers
 457          */
 458         if (ret > MSVCRT_ULONG_MAX)
 459         {
 460             ret = MSVCRT_ULONG_MAX;
 461             *MSVCRT__errno() = MSVCRT_ERANGE;
 462         }
 463         break;
 464     }
 465
 466     return ret;
 467 }
 468
 469 /******************************************************************
 470  *              strnlen (MSVCRT.@)
 471  */
 472 MSVCRT_size_t CDECL MSVCRT_strnlen(const char *s, MSVCRT_size_t maxlen)
 473 {
 474     MSVCRT_size_t i;
 475
 476     for(i=0; i<maxlen; i++)
 477         if(!s[i]) break;
 478
 479     return i;
 480 }
 481
 482 /*********************************************************************
 483  *  _strtoi64_l (MSVCRT.@)
 484  *
 485  * FIXME: locale parameter is ignored
 486  */
 487 __int64 CDECL MSVCRT_strtoi64_l(const char *nptr, char **endptr, int base, MSVCRT__locale_t locale)
 488 {
 489     BOOL negative = FALSE;
 490     __int64 ret = 0;
 491
 492     TRACE("(%s %p %d %p)\n", nptr, endptr, base, locale);
 493
 494     if(!nptr || base<0 || base>36 || base==1) {
 495         MSVCRT__invalid_parameter(NULL, NULL, NULL, 0, 0);
 496         return 0;
 497     }
 498
 499     while(isspace(*nptr)) nptr++;
 500
 501     if(*nptr == '-') {
 502         negative = TRUE;
 503         nptr++;
 504     } else if(*nptr == '+')
 505         nptr++;
 506
 507     if((base==0 || base==16) && *nptr=='0' && tolower(*(nptr+1))=='x') {
 508         base = 16;
 509         nptr += 2;
 510     }
 511
 512     if(base == 0) {
 513         if(*nptr=='0')
 514             base = 8;
 515         else
 516             base = 10;
 517     }
 518
 519     while(*nptr) {
 520         char cur = tolower(*nptr);
 521         int v;
 522
 523         if(isdigit(cur)) {
 524             if(cur >= '0'+base)
 525                 break;
 526             v = cur-'0';
 527         } else {
 528             if(cur<'a' || cur>='a'+base-10)
 529                 break;
 530             v = cur-'a'+10;
 531         }
 532
 533         if(negative)
 534             v = -v;
 535
 536         nptr++;
 537
 538         if(!negative && (ret>MSVCRT_I64_MAX/base || ret*base>MSVCRT_I64_MAX-v)) {
 539             ret = MSVCRT_I64_MAX;
 540             *MSVCRT__errno() = MSVCRT_ERANGE;
 541         } else if(negative && (ret<MSVCRT_I64_MIN/base || ret*base<MSVCRT_I64_MIN-v)) {
 542             ret = MSVCRT_I64_MIN;
 543             *MSVCRT__errno() = MSVCRT_ERANGE;
 544         } else
 545             ret = ret*base + v;
 546     }
 547
 548     if(endptr)
 549         *endptr = (char*)nptr;
 550
 551     return ret;
 552 }
 553
 554 /*********************************************************************
 555  *  _strtoi64 (MSVCRT.@)
 556  */
 557 __int64 CDECL MSVCRT_strtoi64(const char *nptr, char **endptr, int base)
 558 {
 559     return MSVCRT_strtoi64_l(nptr, endptr, base, NULL);
 560 }
 561
 562 /*********************************************************************
 563  *  _strtoui64_l (MSVCRT.@)
 564  *
 565  * FIXME: locale parameter is ignored
 566  */
 567 unsigned __int64 CDECL MSVCRT_strtoui64_l(const char *nptr, char **endptr, int base, MSVCRT__locale_t locale)
 568 {
 569     BOOL negative = FALSE;
 570     unsigned __int64 ret = 0;
 571
 572     TRACE("(%s %p %d %p)\n", nptr, endptr, base, locale);
 573
 574     if(!nptr || base<0 || base>36 || base==1) {
 575         MSVCRT__invalid_parameter(NULL, NULL, NULL, 0, 0);
 576         return 0;
 577     }
 578
 579     while(isspace(*nptr)) nptr++;
 580
 581     if(*nptr == '-') {
 582         negative = TRUE;
 583         nptr++;
 584     } else if(*nptr == '+')
 585         nptr++;
 586
 587     if((base==0 || base==16) && *nptr=='0' && tolower(*(nptr+1))=='x') {
 588         base = 16;
 589         nptr += 2;
 590     }
 591
 592     if(base == 0) {
 593         if(*nptr=='0')
 594             base = 8;
 595         else
 596             base = 10;
 597     }
 598
 599     while(*nptr) {
 600         char cur = tolower(*nptr);
 601         int v;
 602
 603         if(isdigit(cur)) {
 604             if(cur >= '0'+base)
 605                 break;
 606             v = *nptr-'0';
 607         } else {
 608             if(cur<'a' || cur>='a'+base-10)
 609                 break;
 610             v = cur-'a'+10;
 611         }
 612
 613         nptr++;
 614
 615         if(ret>MSVCRT_UI64_MAX/base || ret*base>MSVCRT_UI64_MAX-v) {
 616             ret = MSVCRT_UI64_MAX;
 617             *MSVCRT__errno() = MSVCRT_ERANGE;
 618         } else
 619             ret = ret*base + v;
 620     }
 621
 622     if(endptr)
 623         *endptr = (char*)nptr;
 624
 625     return negative ? -ret : ret;
 626 }
 627
 628 /*********************************************************************
 629  *  _strtoui64 (MSVCRT.@)
 630  */
 631 unsigned __int64 CDECL MSVCRT_strtoui64(const char *nptr, char **endptr, int base)
 632 {
 633     return MSVCRT_strtoui64_l(nptr, endptr, base, NULL);
 634 }
 635
 636 /*********************************************************************
 637  *  _ui64toa_s (MSVCRT.@)
 638  */
 639 int CDECL MSVCRT__ui64toa_s(unsigned __int64 value, char *str,
 640         MSVCRT_size_t size, int radix)
 641 {
 642     char buffer[65], *pos;
 643     int digit;
 644
 645     if(!str || radix<2 || radix>36) {
 646         MSVCRT__invalid_parameter(NULL, NULL, NULL, 0, 0);
 647         *MSVCRT__errno() = MSVCRT_EINVAL;
 648         return MSVCRT_EINVAL;
 649     }
 650
 651     pos = buffer+64;
 652     *pos = '\0';
 653
 654     do {
 655         digit = value%radix;
 656         value /= radix;
 657
 658         if(digit < 10)
 659             *--pos = '0'+digit;
 660         else
 661             *--pos = 'a'+digit-10;
 662     }while(value != 0);
 663
 664     if(buffer-pos+65 > size) {
 665         MSVCRT__invalid_parameter(NULL, NULL, NULL, 0, 0);
 666         *MSVCRT__errno() = MSVCRT_EINVAL;
 667         return MSVCRT_EINVAL;
 668     }
 669
 670     memcpy(str, pos, buffer-pos+65);
 671     return 0;
 672 }
 673
 674 #define I10_OUTPUT_MAX_PREC 21
 675 /* Internal structure used by $I10_OUTPUT */
 676 struct _I10_OUTPUT_DATA {
 677     short pos;
 678     char sign;
 679     BYTE len;
 680     char str[I10_OUTPUT_MAX_PREC+1]; /* add space for '\0' */
 681 };
 682
 683 /*********************************************************************
 684  *              $I10_OUTPUT (MSVCRT.@)
 685  * ld - long double to be printed to data
 686  * prec - precision of part, we're interested in
 687  * flag - 0 for first prec digits, 1 for fractional part
 688  * data - data to be populated
 689  *
 690  * return value
 691  *      0 if given double is NaN or INF
 692  *      1 otherwise
 693  *
 694  * FIXME
 695  *      Native sets last byte of data->str to '0' or '9', I don't know what
 696  *      it means. Current implementation sets it always to '0'.
 697  */
 698 int CDECL MSVCRT_I10_OUTPUT(MSVCRT__LDOUBLE ld, int prec, int flag, struct _I10_OUTPUT_DATA *data)
 699 {
 700     static const char inf_str[] = "1#INF";
 701     static const char nan_str[] = "1#QNAN";
 702
 703     double d = ld.x;
 704     char format[8];
 705     char buf[I10_OUTPUT_MAX_PREC+9]; /* 9 = strlen("0.e+0000") + '\0' */
 706     char *p;
 707
 708     TRACE("(%lf %d %x %p)\n", d, prec, flag, data);
 709
 710     if(d<0) {
 711         data->sign = '-';
 712         d = -d;
 713     } else
 714         data->sign = ' ';
 715
 716     if(isinf(d)) {
 717         data->pos = 1;
 718         data->len = 5;
 719         memcpy(data->str, inf_str, sizeof(inf_str));
 720
 721         return 0;
 722     }
 723
 724     if(isnan(d)) {
 725         data->pos = 1;
 726         data->len = 6;
 727         memcpy(data->str, nan_str, sizeof(nan_str));
 728
 729         return 0;
 730     }
 731
 732     if(flag&1) {
 733         int exp = 1+floor(log10(d));
 734
 735         prec += exp;
 736         if(exp < 0)
 737             prec--;
 738     }
 739     prec--;
 740
 741     if(prec+1 > I10_OUTPUT_MAX_PREC)
 742         prec = I10_OUTPUT_MAX_PREC-1;
 743     else if(prec < 0) {
 744         d = 0.0;
 745         prec = 0;
 746     }
 747
 748     sprintf(format, "%%.%dle", prec);
 749     sprintf(buf, format, d);
 750
 751     buf[1] = buf[0];
 752     data->pos = atoi(buf+prec+3);
 753     if(buf[1] != '0')
 754         data->pos++;
 755
 756     for(p = buf+prec+1; p>buf+1 && *p=='0'; p--);
 757     data->len = p-buf;
 758
 759     memcpy(data->str, buf+1, data->len);
 760     data->str[data->len] = '\0';
 761
 762     if(buf[1]!='0' && prec-data->len+1>0)
 763         memcpy(data->str+data->len+1, buf+data->len+1, prec-data->len+1);
 764
 765     return 1;
 766 }
 767 #undef I10_OUTPUT_MAX_PREC