dlls/user/wsprintf.c

   1 /*
   2  * wsprintf functions
   3  *
   4  * Copyright 1996 Alexandre Julliard
   5  *
   6  * This library is free software; you can redistribute it and/or
   7  * modify it under the terms of the GNU Lesser General Public
   8  * License as published by the Free Software Foundation; either
   9  * version 2.1 of the License, or (at your option) any later version.
  10  *
  11  * This library is distributed in the hope that it will be useful,
  12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  14  * Lesser General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU Lesser General Public
  17  * License along with this library; if not, write to the Free Software
  18  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  19  *
  20  * NOTE:
  21  * This code is duplicated in shlwapi. If you change something here make sure
  22  * to change it in shlwapi too.
  23  */
  24
  25 #include <stdarg.h>
  26 #include <string.h>
  27 #include <stdio.h>
  28
  29 #include "winbase.h"
  30 #include "wingdi.h"
  31 #include "winuser.h"
  32
  33 #include "wine/winbase16.h"
  34 #include "wine/winuser16.h"
  35 #include "stackframe.h"
  36
  37 #include "wine/debug.h"
  38
  39 WINE_DEFAULT_DEBUG_CHANNEL(string);
  40
  41
  42 #define WPRINTF_LEFTALIGN   0x0001  /* Align output on the left ('-' prefix) */
  43 #define WPRINTF_PREFIX_HEX  0x0002  /* Prefix hex with 0x ('#' prefix) */
  44 #define WPRINTF_ZEROPAD     0x0004  /* Pad with zeros ('0' prefix) */
  45 #define WPRINTF_LONG        0x0008  /* Long arg ('l' prefix) */
  46 #define WPRINTF_SHORT       0x0010  /* Short arg ('h' prefix) */
  47 #define WPRINTF_UPPER_HEX   0x0020  /* Upper-case hex ('X' specifier) */
  48 #define WPRINTF_WIDE        0x0040  /* Wide arg ('w' prefix) */
  49
  50 typedef enum
  51 {
  52     WPR_UNKNOWN,
  53     WPR_CHAR,
  54     WPR_WCHAR,
  55     WPR_STRING,
  56     WPR_WSTRING,
  57     WPR_SIGNED,
  58     WPR_UNSIGNED,
  59     WPR_HEXA
  60 } WPRINTF_TYPE;
  61
  62 typedef struct
  63 {
  64     UINT         flags;
  65     UINT         width;
  66     UINT         precision;
  67     WPRINTF_TYPE   type;
  68 } WPRINTF_FORMAT;
  69
  70 typedef union {
  71     WCHAR   wchar_view;
  72     CHAR    char_view;
  73     LPCSTR  lpcstr_view;
  74     LPCWSTR lpcwstr_view;
  75     INT     int_view;
  76 } WPRINTF_DATA;
  77
  78 static const CHAR null_stringA[] = "(null)";
  79 static const WCHAR null_stringW[] = { '(', 'n', 'u', 'l', 'l', ')', 0 };
  80
  81 /***********************************************************************
  82  *           WPRINTF_ParseFormatA
  83  *
  84  * Parse a format specification. A format specification has the form:
  85  *
  86  * [-][#][0][width][.precision]type
  87  *
  88  * Return value is the length of the format specification in characters.
  89  */
  90 static INT WPRINTF_ParseFormatA( LPCSTR format, WPRINTF_FORMAT *res )
  91 {
  92     LPCSTR p = format;
  93
  94     res->flags = 0;
  95     res->width = 0;
  96     res->precision = 0;
  97     if (*p == '-') { res->flags |= WPRINTF_LEFTALIGN; p++; }
  98     if (*p == '#') { res->flags |= WPRINTF_PREFIX_HEX; p++; }
  99     if (*p == '0') { res->flags |= WPRINTF_ZEROPAD; p++; }
 100     while ((*p >= '0') && (*p <= '9'))  /* width field */
 101     {
 102         res->width = res->width * 10 + *p - '0';
 103         p++;
 104     }
 105     if (*p == '.')  /* precision field */
 106     {
 107         p++;
 108         while ((*p >= '0') && (*p <= '9'))
 109         {
 110             res->precision = res->precision * 10 + *p - '0';
 111             p++;
 112         }
 113     }
 114     if (*p == 'l') { res->flags |= WPRINTF_LONG; p++; }
 115     else if (*p == 'h') { res->flags |= WPRINTF_SHORT; p++; }
 116     else if (*p == 'w') { res->flags |= WPRINTF_WIDE; p++; }
 117     switch(*p)
 118     {
 119     case 'c':
 120         res->type = (res->flags & WPRINTF_LONG) ? WPR_WCHAR : WPR_CHAR;
 121         break;
 122     case 'C':
 123         res->type = (res->flags & WPRINTF_SHORT) ? WPR_CHAR : WPR_WCHAR;
 124         break;
 125     case 'd':
 126     case 'i':
 127         res->type = WPR_SIGNED;
 128         break;
 129     case 's':
 130         res->type = (res->flags & (WPRINTF_LONG |WPRINTF_WIDE)) ? WPR_WSTRING : WPR_STRING;
 131         break;
 132     case 'S':
 133         res->type = (res->flags & (WPRINTF_SHORT|WPRINTF_WIDE)) ? WPR_STRING : WPR_WSTRING;
 134         break;
 135     case 'u':
 136         res->type = WPR_UNSIGNED;
 137         break;
 138     case 'X':
 139         res->flags |= WPRINTF_UPPER_HEX;
 140         /* fall through */
 141     case 'x':
 142         res->type = WPR_HEXA;
 143         break;
 144     default: /* unknown format char */
 145         res->type = WPR_UNKNOWN;
 146         p--;  /* print format as normal char */
 147         break;
 148     }
 149     return (INT)(p - format) + 1;
 150 }
 151
 152
 153 /***********************************************************************
 154  *           WPRINTF_ParseFormatW
 155  *
 156  * Parse a format specification. A format specification has the form:
 157  *
 158  * [-][#][0][width][.precision]type
 159  *
 160  * Return value is the length of the format specification in characters.
 161  */
 162 static INT WPRINTF_ParseFormatW( LPCWSTR format, WPRINTF_FORMAT *res )
 163 {
 164     LPCWSTR p = format;
 165
 166     res->flags = 0;
 167     res->width = 0;
 168     res->precision = 0;
 169     if (*p == '-') { res->flags |= WPRINTF_LEFTALIGN; p++; }
 170     if (*p == '#') { res->flags |= WPRINTF_PREFIX_HEX; p++; }
 171     if (*p == '0') { res->flags |= WPRINTF_ZEROPAD; p++; }
 172     while ((*p >= '0') && (*p <= '9'))  /* width field */
 173     {
 174         res->width = res->width * 10 + *p - '0';
 175         p++;
 176     }
 177     if (*p == '.')  /* precision field */
 178     {
 179         p++;
 180         while ((*p >= '0') && (*p <= '9'))
 181         {
 182             res->precision = res->precision * 10 + *p - '0';
 183             p++;
 184         }
 185     }
 186     if (*p == 'l') { res->flags |= WPRINTF_LONG; p++; }
 187     else if (*p == 'h') { res->flags |= WPRINTF_SHORT; p++; }
 188     else if (*p == 'w') { res->flags |= WPRINTF_WIDE; p++; }
 189     switch((CHAR)*p)
 190     {
 191     case 'c':
 192         res->type = (res->flags & WPRINTF_SHORT) ? WPR_CHAR : WPR_WCHAR;
 193         break;
 194     case 'C':
 195         res->type = (res->flags & WPRINTF_LONG) ? WPR_WCHAR : WPR_CHAR;
 196         break;
 197     case 'd':
 198     case 'i':
 199         res->type = WPR_SIGNED;
 200         break;
 201     case 's':
 202         res->type = ((res->flags & WPRINTF_SHORT) && !(res->flags & WPRINTF_WIDE)) ? WPR_STRING : WPR_WSTRING;
 203         break;
 204     case 'S':
 205         res->type = (res->flags & (WPRINTF_LONG|WPRINTF_WIDE)) ? WPR_WSTRING : WPR_STRING;
 206         break;
 207     case 'u':
 208         res->type = WPR_UNSIGNED;
 209         break;
 210     case 'X':
 211         res->flags |= WPRINTF_UPPER_HEX;
 212         /* fall through */
 213     case 'x':
 214         res->type = WPR_HEXA;
 215         break;
 216     default:
 217         res->type = WPR_UNKNOWN;
 218         p--;  /* print format as normal char */
 219         break;
 220     }
 221     return (INT)(p - format) + 1;
 222 }
 223
 224
 225 /***********************************************************************
 226  *           WPRINTF_GetLen
 227  */
 228 static UINT WPRINTF_GetLen( WPRINTF_FORMAT *format, WPRINTF_DATA *arg,
 229                               LPSTR number, UINT maxlen )
 230 {
 231     UINT len;
 232
 233     if (format->flags & WPRINTF_LEFTALIGN) format->flags &= ~WPRINTF_ZEROPAD;
 234     if (format->width > maxlen) format->width = maxlen;
 235     switch(format->type)
 236     {
 237     case WPR_CHAR:
 238     case WPR_WCHAR:
 239         return (format->precision = 1);
 240     case WPR_STRING:
 241         if (!arg->lpcstr_view) arg->lpcstr_view = null_stringA;
 242         for (len = 0; !format->precision || (len < format->precision); len++)
 243             if (!*(arg->lpcstr_view + len)) break;
 244         if (len > maxlen) len = maxlen;
 245         return (format->precision = len);
 246     case WPR_WSTRING:
 247         if (!arg->lpcwstr_view) arg->lpcwstr_view = null_stringW;
 248         for (len = 0; !format->precision || (len < format->precision); len++)
 249             if (!*(arg->lpcwstr_view + len)) break;
 250         if (len > maxlen) len = maxlen;
 251         return (format->precision = len);
 252     case WPR_SIGNED:
 253         len = sprintf( number, "%d", arg->int_view );
 254         break;
 255     case WPR_UNSIGNED:
 256         len = sprintf( number, "%u", (UINT)arg->int_view );
 257         break;
 258     case WPR_HEXA:
 259         len = sprintf( number,
 260                        (format->flags & WPRINTF_UPPER_HEX) ? "%X" : "%x",
 261                        (UINT)arg->int_view);
 262         break;
 263     default:
 264         return 0;
 265     }
 266     if (len > maxlen) len = maxlen;
 267     if (format->precision < len) format->precision = len;
 268     if (format->precision > maxlen) format->precision = maxlen;
 269     if ((format->flags & WPRINTF_ZEROPAD) && (format->width > format->precision))
 270         format->precision = format->width;
 271     if (format->flags & WPRINTF_PREFIX_HEX) len += 2;
 272     return len;
 273 }
 274
 275
 276 /***********************************************************************
 277  *           wvsnprintf16   (Not a Windows API)
 278  */
 279 static INT16 wvsnprintf16( LPSTR buffer, UINT16 maxlen, LPCSTR spec,
 280                            LPCVOID args )
 281 {
 282     WPRINTF_FORMAT format;
 283     LPSTR p = buffer;
 284     UINT i, len, sign;
 285     CHAR number[20];
 286     WPRINTF_DATA cur_arg;
 287     SEGPTR seg_str;
 288
 289     while (*spec && (maxlen > 1))
 290     {
 291         if (*spec != '%') { *p++ = *spec++; maxlen--; continue; }
 292         spec++;
 293         if (*spec == '%') { *p++ = *spec++; maxlen--; continue; }
 294         spec += WPRINTF_ParseFormatA( spec, &format );
 295         switch(format.type)
 296         {
 297         case WPR_WCHAR:  /* No Unicode in Win16 */
 298         case WPR_CHAR:
 299             cur_arg.char_view = VA_ARG16( args, CHAR );
 300             break;
 301         case WPR_WSTRING:  /* No Unicode in Win16 */
 302         case WPR_STRING:
 303             seg_str = VA_ARG16( args, SEGPTR );
 304             if (IsBadReadPtr16(seg_str, 1 )) cur_arg.lpcstr_view = "";
 305             else cur_arg.lpcstr_view = MapSL( seg_str );
 306             break;
 307         case WPR_SIGNED:
 308             if (!(format.flags & WPRINTF_LONG))
 309             {
 310                 cur_arg.int_view = VA_ARG16( args, INT16 );
 311                 break;
 312             }
 313             /* fall through */
 314         case WPR_HEXA:
 315         case WPR_UNSIGNED:
 316             if (format.flags & WPRINTF_LONG)
 317                 cur_arg.int_view = VA_ARG16( args, UINT );
 318             else
 319                 cur_arg.int_view = VA_ARG16( args, UINT16 );
 320             break;
 321         case WPR_UNKNOWN:
 322             continue;
 323         }
 324         len = WPRINTF_GetLen( &format, &cur_arg, number, maxlen - 1 );
 325         sign = 0;
 326         if (!(format.flags & WPRINTF_LEFTALIGN))
 327             for (i = format.precision; i < format.width; i++, maxlen--)
 328                 *p++ = ' ';
 329         switch(format.type)
 330         {
 331         case WPR_WCHAR:  /* No Unicode in Win16 */
 332         case WPR_CHAR:
 333             *p= cur_arg.char_view;
 334             /* wsprintf16 (unlike wsprintf) ignores null characters */
 335             if (*p != '\0') p++;
 336             else if (format.width > 1) *p++ = ' ';
 337             else len = 0;
 338             break;
 339         case WPR_WSTRING:  /* No Unicode in Win16 */
 340         case WPR_STRING:
 341             if (len) memcpy( p, cur_arg.lpcstr_view, len );
 342             p += len;
 343             break;
 344         case WPR_HEXA:
 345             if ((format.flags & WPRINTF_PREFIX_HEX) && (maxlen > 3))
 346             {
 347                 *p++ = '0';
 348                 *p++ = (format.flags & WPRINTF_UPPER_HEX) ? 'X' : 'x';
 349                 maxlen -= 2;
 350                 len -= 2;
 351             }
 352             /* fall through */
 353         case WPR_SIGNED:
 354             /* Transfer the sign now, just in case it will be zero-padded*/
 355             if (number[0] == '-')
 356             {
 357                 *p++ = '-';
 358                 sign = 1;
 359             }
 360             /* fall through */
 361         case WPR_UNSIGNED:
 362             for (i = len; i < format.precision; i++, maxlen--) *p++ = '0';
 363             if (len > sign) memcpy( p, number + sign, len - sign );
 364             p += len;
 365             break;
 366         case WPR_UNKNOWN:
 367             continue;
 368         }
 369         if (format.flags & WPRINTF_LEFTALIGN)
 370             for (i = format.precision; i < format.width; i++, maxlen--)
 371                 *p++ = ' ';
 372         maxlen -= len;
 373     }
 374     *p = 0;
 375     return (maxlen > 1) ? (INT)(p - buffer) : -1;
 376 }
 377
 378
 379 /***********************************************************************
 380  *           wvsnprintfA   (internal)
 381  */
 382 static INT wvsnprintfA( LPSTR buffer, UINT maxlen, LPCSTR spec, va_list args )
 383 {
 384     WPRINTF_FORMAT format;
 385     LPSTR p = buffer;
 386     UINT i, len, sign;
 387     CHAR number[20];
 388     WPRINTF_DATA argData;
 389
 390     TRACE("%p %u %s\n", buffer, maxlen, debugstr_a(spec));
 391
 392     while (*spec && (maxlen > 1))
 393     {
 394         if (*spec != '%') { *p++ = *spec++; maxlen--; continue; }
 395         spec++;
 396         if (*spec == '%') { *p++ = *spec++; maxlen--; continue; }
 397         spec += WPRINTF_ParseFormatA( spec, &format );
 398
 399         switch(format.type)
 400         {
 401         case WPR_WCHAR:
 402             argData.wchar_view = (WCHAR)va_arg( args, int );
 403             break;
 404         case WPR_CHAR:
 405             argData.char_view = (CHAR)va_arg( args, int );
 406             break;
 407         case WPR_STRING:
 408             argData.lpcstr_view = va_arg( args, LPCSTR );
 409             break;
 410         case WPR_WSTRING:
 411             argData.lpcwstr_view = va_arg( args, LPCWSTR );
 412             break;
 413         case WPR_HEXA:
 414         case WPR_SIGNED:
 415         case WPR_UNSIGNED:
 416             argData.int_view = va_arg( args, INT );
 417             break;
 418         default:
 419             argData.wchar_view = 0;
 420             break;
 421         }
 422
 423         len = WPRINTF_GetLen( &format, &argData, number, maxlen - 1 );
 424         sign = 0;
 425         if (!(format.flags & WPRINTF_LEFTALIGN))
 426             for (i = format.precision; i < format.width; i++, maxlen--)
 427                 *p++ = ' ';
 428         switch(format.type)
 429         {
 430         case WPR_WCHAR:
 431             *p++ = argData.wchar_view;
 432             break;
 433         case WPR_CHAR:
 434             *p++ = argData.char_view;
 435             break;
 436         case WPR_STRING:
 437             memcpy( p, argData.lpcstr_view, len );
 438             p += len;
 439             break;
 440         case WPR_WSTRING:
 441             {
 442                 LPCWSTR ptr = argData.lpcwstr_view;
 443                 for (i = 0; i < len; i++) *p++ = (CHAR)*ptr++;
 444             }
 445             break;
 446         case WPR_HEXA:
 447             if ((format.flags & WPRINTF_PREFIX_HEX) && (maxlen > 3))
 448             {
 449                 *p++ = '0';
 450                 *p++ = (format.flags & WPRINTF_UPPER_HEX) ? 'X' : 'x';
 451                 maxlen -= 2;
 452                 len -= 2;
 453             }
 454             /* fall through */
 455         case WPR_SIGNED:
 456             /* Transfer the sign now, just in case it will be zero-padded*/
 457             if (number[0] == '-')
 458             {
 459                 *p++ = '-';
 460                 sign = 1;
 461             }
 462             /* fall through */
 463         case WPR_UNSIGNED:
 464             for (i = len; i < format.precision; i++, maxlen--) *p++ = '0';
 465             memcpy( p, number + sign, len - sign  );
 466             p += len - sign;
 467             break;
 468         case WPR_UNKNOWN:
 469             continue;
 470         }
 471         if (format.flags & WPRINTF_LEFTALIGN)
 472             for (i = format.precision; i < format.width; i++, maxlen--)
 473                 *p++ = ' ';
 474         maxlen -= len;
 475     }
 476     *p = 0;
 477     TRACE("%s\n",debugstr_a(buffer));
 478     return (maxlen > 1) ? (INT)(p - buffer) : -1;
 479 }
 480
 481
 482 /***********************************************************************
 483  *           wvsnprintfW   (internal)
 484  */
 485 static INT wvsnprintfW( LPWSTR buffer, UINT maxlen, LPCWSTR spec, va_list args )
 486 {
 487     WPRINTF_FORMAT format;
 488     LPWSTR p = buffer;
 489     UINT i, len, sign;
 490     CHAR number[20];
 491     WPRINTF_DATA argData;
 492
 493     TRACE("%p %u %s\n", buffer, maxlen, debugstr_w(spec));
 494
 495     while (*spec && (maxlen > 1))
 496     {
 497         if (*spec != '%') { *p++ = *spec++; maxlen--; continue; }
 498         spec++;
 499         if (*spec == '%') { *p++ = *spec++; maxlen--; continue; }
 500         spec += WPRINTF_ParseFormatW( spec, &format );
 501
 502         switch(format.type)
 503         {
 504         case WPR_WCHAR:
 505             argData.wchar_view = (WCHAR)va_arg( args, int );
 506             break;
 507         case WPR_CHAR:
 508             argData.char_view = (CHAR)va_arg( args, int );
 509             break;
 510         case WPR_STRING:
 511             argData.lpcstr_view = va_arg( args, LPCSTR );
 512             break;
 513         case WPR_WSTRING:
 514             argData.lpcwstr_view = va_arg( args, LPCWSTR );
 515             break;
 516         case WPR_HEXA:
 517         case WPR_SIGNED:
 518         case WPR_UNSIGNED:
 519             argData.int_view = va_arg( args, INT );
 520             break;
 521         default:
 522             argData.wchar_view = 0;
 523             break;
 524         }
 525
 526         len = WPRINTF_GetLen( &format, &argData, number, maxlen - 1 );
 527         sign = 0;
 528         if (!(format.flags & WPRINTF_LEFTALIGN))
 529             for (i = format.precision; i < format.width; i++, maxlen--)
 530                 *p++ = ' ';
 531         switch(format.type)
 532         {
 533         case WPR_WCHAR:
 534             *p++ = argData.wchar_view;
 535             break;
 536         case WPR_CHAR:
 537             *p++ = argData.char_view;
 538             break;
 539         case WPR_STRING:
 540             {
 541                 LPCSTR ptr = argData.lpcstr_view;
 542                 for (i = 0; i < len; i++) *p++ = (WCHAR)*ptr++;
 543             }
 544             break;
 545         case WPR_WSTRING:
 546             if (len) memcpy( p, argData.lpcwstr_view, len * sizeof(WCHAR) );
 547             p += len;
 548             break;
 549         case WPR_HEXA:
 550             if ((format.flags & WPRINTF_PREFIX_HEX) && (maxlen > 3))
 551             {
 552                 *p++ = '0';
 553                 *p++ = (format.flags & WPRINTF_UPPER_HEX) ? 'X' : 'x';
 554                 maxlen -= 2;
 555                 len -= 2;
 556             }
 557             /* fall through */
 558         case WPR_SIGNED:
 559             /* Transfer the sign now, just in case it will be zero-padded*/
 560             if (number[0] == '-')
 561             {
 562                 *p++ = '-';
 563                 sign = 1;
 564             }
 565             /* fall through */
 566         case WPR_UNSIGNED:
 567             for (i = len; i < format.precision; i++, maxlen--) *p++ = '0';
 568             for (i = sign; i < len; i++) *p++ = (WCHAR)number[i];
 569             break;
 570         case WPR_UNKNOWN:
 571             continue;
 572         }
 573         if (format.flags & WPRINTF_LEFTALIGN)
 574             for (i = format.precision; i < format.width; i++, maxlen--)
 575                 *p++ = ' ';
 576         maxlen -= len;
 577     }
 578     *p = 0;
 579     TRACE("%s\n",debugstr_w(buffer));
 580     return (maxlen > 1) ? (INT)(p - buffer) : -1;
 581 }
 582
 583
 584 /***********************************************************************
 585  *           wvsprintf   (USER.421)
 586  */
 587 INT16 WINAPI wvsprintf16( LPSTR buffer, LPCSTR spec, LPCVOID args )
 588 {
 589     INT16 res;
 590
 591     TRACE("for %p got:\n",buffer);
 592     res = wvsnprintf16( buffer, 1024, spec, args );
 593     return ( res == -1 ) ? 1024 : res;
 594 }
 595
 596
 597 /***********************************************************************
 598  *           wvsprintfA   (USER32.@)
 599  */
 600 INT WINAPI wvsprintfA( LPSTR buffer, LPCSTR spec, va_list args )
 601 {
 602     INT res = wvsnprintfA( buffer, 1024, spec, args );
 603     return ( res == -1 ) ? 1024 : res;
 604 }
 605
 606
 607 /***********************************************************************
 608  *           wvsprintfW   (USER32.@)
 609  */
 610 INT WINAPI wvsprintfW( LPWSTR buffer, LPCWSTR spec, va_list args )
 611 {
 612     INT res = wvsnprintfW( buffer, 1024, spec, args );
 613     return ( res == -1 ) ? 1024 : res;
 614 }
 615
 616
 617 /***********************************************************************
 618  *           _wsprintf   (USER.420)
 619  */
 620 INT16 WINAPIV wsprintf16(void)
 621 {
 622     VA_LIST16 valist;
 623     INT16 res;
 624     SEGPTR buffer, spec;
 625
 626     VA_START16( valist );
 627     buffer = VA_ARG16( valist, SEGPTR );
 628     spec   = VA_ARG16( valist, SEGPTR );
 629     res = wvsnprintf16( MapSL(buffer), 1024, MapSL(spec), valist );
 630     VA_END16( valist );
 631     return ( res == -1 ) ? 1024 : res;
 632 }
 633
 634
 635 /***********************************************************************
 636  *           wsprintfA   (USER32.@)
 637  */
 638 INT WINAPIV wsprintfA( LPSTR buffer, LPCSTR spec, ... )
 639 {
 640     va_list valist;
 641     INT res;
 642
 643     va_start( valist, spec );
 644     res = wvsnprintfA( buffer, 1024, spec, valist );
 645     va_end( valist );
 646     return ( res == -1 ) ? 1024 : res;
 647 }
 648
 649
 650 /***********************************************************************
 651  *           wsprintfW   (USER32.@)
 652  */
 653 INT WINAPIV wsprintfW( LPWSTR buffer, LPCWSTR spec, ... )
 654 {
 655     va_list valist;
 656     INT res;
 657
 658     va_start( valist, spec );
 659     res = wvsnprintfW( buffer, 1024, spec, valist );
 660     va_end( valist );
 661     return ( res == -1 ) ? 1024 : res;
 662 }