misc/wsprintf.c

   1 /*
   2  * wsprintf functions
   3  *
   4  * Copyright 1996 Alexandre Julliard
   5  */
   6
   7 #include <stdarg.h>
   8 #include <string.h>
   9 #include <stdio.h>
  10 #include "wine/winbase16.h"
  11 #include "windef.h"
  12 #include "wingdi.h"
  13 #include "winuser.h"
  14 #include "ldt.h"
  15 #include "stackframe.h"
  16 #include "module.h"
  17 #include "global.h"
  18 #include "debugtools.h"
  19
  20 DEFAULT_DEBUG_CHANNEL(string)
  21
  22
  23 #define WPRINTF_LEFTALIGN   0x0001  /* Align output on the left ('-' prefix) */
  24 #define WPRINTF_PREFIX_HEX  0x0002  /* Prefix hex with 0x ('#' prefix) */
  25 #define WPRINTF_ZEROPAD     0x0004  /* Pad with zeros ('0' prefix) */
  26 #define WPRINTF_LONG        0x0008  /* Long arg ('l' prefix) */
  27 #define WPRINTF_SHORT       0x0010  /* Short arg ('h' prefix) */
  28 #define WPRINTF_UPPER_HEX   0x0020  /* Upper-case hex ('X' specifier) */
  29 #define WPRINTF_WIDE        0x0040  /* Wide arg ('w' prefix) */
  30
  31 typedef enum
  32 {
  33     WPR_UNKNOWN,
  34     WPR_CHAR,
  35     WPR_WCHAR,
  36     WPR_STRING,
  37     WPR_WSTRING,
  38     WPR_SIGNED,
  39     WPR_UNSIGNED,
  40     WPR_HEXA
  41 } WPRINTF_TYPE;
  42
  43 typedef struct
  44 {
  45     UINT         flags;
  46     UINT         width;
  47     UINT         precision;
  48     WPRINTF_TYPE   type;
  49 } WPRINTF_FORMAT;
  50
  51 typedef union {
  52     WCHAR   wchar_view;
  53     CHAR    char_view;
  54     LPCSTR  lpcstr_view;
  55     LPCWSTR lpcwstr_view;
  56     INT     int_view;
  57 } WPRINTF_DATA;
  58
  59 static const CHAR null_stringA[] = "(null)";
  60 static const WCHAR null_stringW[] = { '(', 'n', 'u', 'l', 'l', ')', 0 };
  61
  62 /***********************************************************************
  63  *           WPRINTF_ParseFormatA
  64  *
  65  * Parse a format specification. A format specification has the form:
  66  *
  67  * [-][#][0][width][.precision]type
  68  *
  69  * Return value is the length of the format specification in characters.
  70  */
  71 static INT WPRINTF_ParseFormatA( LPCSTR format, WPRINTF_FORMAT *res )
  72 {
  73     LPCSTR p = format;
  74
  75     res->flags = 0;
  76     res->width = 0;
  77     res->precision = 0;
  78     if (*p == '-') { res->flags |= WPRINTF_LEFTALIGN; p++; }
  79     if (*p == '#') { res->flags |= WPRINTF_PREFIX_HEX; p++; }
  80     if (*p == '0') { res->flags |= WPRINTF_ZEROPAD; p++; }
  81     while ((*p >= '0') && (*p <= '9'))  /* width field */
  82     {
  83         res->width = res->width * 10 + *p - '0';
  84         p++;
  85     }
  86     if (*p == '.')  /* precision field */
  87     {
  88         p++;
  89         while ((*p >= '0') && (*p <= '9'))
  90         {
  91             res->precision = res->precision * 10 + *p - '0';
  92             p++;
  93         }
  94     }
  95     if (*p == 'l') { res->flags |= WPRINTF_LONG; p++; }
  96     else if (*p == 'h') { res->flags |= WPRINTF_SHORT; p++; }
  97     else if (*p == 'w') { res->flags |= WPRINTF_WIDE; p++; }
  98     switch(*p)
  99     {
 100     case 'c':
 101         res->type = (res->flags & WPRINTF_LONG) ? WPR_WCHAR : WPR_CHAR;
 102         break;
 103     case 'C':
 104         res->type = (res->flags & WPRINTF_SHORT) ? WPR_CHAR : WPR_WCHAR;
 105         break;
 106     case 'd':
 107     case 'i':
 108         res->type = WPR_SIGNED;
 109         break;
 110     case 's':
 111         res->type = (res->flags & (WPRINTF_LONG |WPRINTF_WIDE))
 112                     ? WPR_WSTRING : WPR_STRING;
 113         break;
 114     case 'S':
 115         res->type = (res->flags & (WPRINTF_SHORT|WPRINTF_WIDE))
 116                     ? WPR_STRING : WPR_WSTRING;
 117         break;
 118     case 'u':
 119         res->type = WPR_UNSIGNED;
 120         break;
 121     case 'X':
 122         res->flags |= WPRINTF_UPPER_HEX;
 123         /* fall through */
 124     case 'x':
 125         res->type = WPR_HEXA;
 126         break;
 127     default: /* unknown format char */
 128         res->type = WPR_UNKNOWN;
 129         p--;  /* print format as normal char */
 130         break;
 131     }
 132     return (INT)(p - format) + 1;
 133 }
 134
 135
 136 /***********************************************************************
 137  *           WPRINTF_ParseFormatW
 138  *
 139  * Parse a format specification. A format specification has the form:
 140  *
 141  * [-][#][0][width][.precision]type
 142  *
 143  * Return value is the length of the format specification in characters.
 144  */
 145 static INT WPRINTF_ParseFormatW( LPCWSTR format, WPRINTF_FORMAT *res )
 146 {
 147     LPCWSTR p = format;
 148
 149     res->flags = 0;
 150     res->width = 0;
 151     res->precision = 0;
 152     if (*p == '-') { res->flags |= WPRINTF_LEFTALIGN; p++; }
 153     if (*p == '#') { res->flags |= WPRINTF_PREFIX_HEX; p++; }
 154     if (*p == '0') { res->flags |= WPRINTF_ZEROPAD; p++; }
 155     while ((*p >= '0') && (*p <= '9'))  /* width field */
 156     {
 157         res->width = res->width * 10 + *p - '0';
 158         p++;
 159     }
 160     if (*p == '.')  /* precision field */
 161     {
 162         p++;
 163         while ((*p >= '0') && (*p <= '9'))
 164         {
 165             res->precision = res->precision * 10 + *p - '0';
 166             p++;
 167         }
 168     }
 169     if (*p == 'l') { res->flags |= WPRINTF_LONG; p++; }
 170     else if (*p == 'h') { res->flags |= WPRINTF_SHORT; p++; }
 171     else if (*p == 'w') { res->flags |= WPRINTF_WIDE; p++; }
 172     switch((CHAR)*p)
 173     {
 174     case 'c':
 175         res->type = (res->flags & WPRINTF_SHORT) ? WPR_CHAR : WPR_WCHAR;
 176         break;
 177     case 'C':
 178         res->type = (res->flags & WPRINTF_LONG) ? WPR_WCHAR : WPR_CHAR;
 179         break;
 180     case 'd':
 181     case 'i':
 182         res->type = WPR_SIGNED;
 183         break;
 184     case 's':
 185         res->type = ((res->flags & WPRINTF_SHORT) && !(res->flags & WPRINTF_WIDE)) ? WPR_STRING : WPR_WSTRING;
 186         break;
 187     case 'S':
 188         res->type = (res->flags & (WPRINTF_LONG|WPRINTF_WIDE)) ? WPR_WSTRING : WPR_STRING;
 189         break;
 190     case 'u':
 191         res->type = WPR_UNSIGNED;
 192         break;
 193     case 'X':
 194         res->flags |= WPRINTF_UPPER_HEX;
 195         /* fall through */
 196     case 'x':
 197         res->type = WPR_HEXA;
 198         break;
 199     default:
 200         res->type = WPR_UNKNOWN;
 201         p--;  /* print format as normal char */
 202         break;
 203     }
 204     return (INT)(p - format) + 1;
 205 }
 206
 207
 208 /***********************************************************************
 209  *           WPRINTF_GetLen
 210  */
 211 static UINT WPRINTF_GetLen( WPRINTF_FORMAT *format, WPRINTF_DATA *arg,
 212                               LPSTR number, UINT maxlen )
 213 {
 214     UINT len;
 215
 216     if (format->flags & WPRINTF_LEFTALIGN) format->flags &= ~WPRINTF_ZEROPAD;
 217     if (format->width > maxlen) format->width = maxlen;
 218     switch(format->type)
 219     {
 220     case WPR_CHAR:
 221     case WPR_WCHAR:
 222         return (format->precision = 1);
 223     case WPR_STRING:
 224         if (!arg->lpcstr_view) arg->lpcstr_view = null_stringA;
 225         for (len = 0; !format->precision || (len < format->precision); len++)
 226             if (!*(arg->lpcstr_view + len)) break;
 227         if (len > maxlen) len = maxlen;
 228         return (format->precision = len);
 229     case WPR_WSTRING:
 230         if (!arg->lpcwstr_view) arg->lpcwstr_view = null_stringW;
 231         for (len = 0; !format->precision || (len < format->precision); len++)
 232             if (!*(arg->lpcwstr_view + len)) break;
 233         if (len > maxlen) len = maxlen;
 234         return (format->precision = len);
 235     case WPR_SIGNED:
 236         len = sprintf( number, "%d", arg->int_view );
 237         break;
 238     case WPR_UNSIGNED:
 239         len = sprintf( number, "%u", (UINT)arg->int_view );
 240         break;
 241     case WPR_HEXA:
 242         len = sprintf( number,
 243                        (format->flags & WPRINTF_UPPER_HEX) ? "%X" : "%x",
 244                        (UINT)arg->int_view);
 245         break;
 246     default:
 247         return 0;
 248     }
 249     if (len > maxlen) len = maxlen;
 250     if (format->precision < len) format->precision = len;
 251     if (format->precision > maxlen) format->precision = maxlen;
 252     if ((format->flags & WPRINTF_ZEROPAD) && (format->width > format->precision))
 253         format->precision = format->width;
 254     if (format->flags & WPRINTF_PREFIX_HEX) len += 2;
 255     return len;
 256 }
 257
 258 /***********************************************************************
 259  *           WPRINTF_ExtractVAPtr (Not a Windows API)
 260  */
 261 static WPRINTF_DATA WPRINTF_ExtractVAPtr( WPRINTF_FORMAT *format, va_list* args )
 262 {
 263     WPRINTF_DATA result;
 264     switch(format->type)
 265     {
 266         case WPR_WCHAR:
 267             result.wchar_view = va_arg( *args, WCHAR );     break;
 268         case WPR_CHAR:
 269             result.char_view = va_arg( *args, CHAR );       break;
 270         case WPR_STRING:
 271             result.lpcstr_view = va_arg( *args, LPCSTR);    break;
 272         case WPR_WSTRING:
 273             result.lpcwstr_view = va_arg( *args, LPCWSTR);  break;
 274         case WPR_HEXA:
 275         case WPR_SIGNED:
 276         case WPR_UNSIGNED:
 277             result.int_view = va_arg( *args, INT );         break;
 278         default:
 279             result.wchar_view = 0;                          break;
 280     }
 281     return result;
 282 }
 283
 284 /***********************************************************************
 285  *           wvsnprintf16   (Not a Windows API)
 286  */
 287 INT16 WINAPI wvsnprintf16( LPSTR buffer, UINT16 maxlen, LPCSTR spec,
 288                            LPCVOID args )
 289 {
 290     WPRINTF_FORMAT format;
 291     LPSTR p = buffer;
 292     UINT i, len;
 293     CHAR number[20];
 294     WPRINTF_DATA cur_arg;
 295     SEGPTR seg_str;
 296
 297     while (*spec && (maxlen > 1))
 298     {
 299         if (*spec != '%') { *p++ = *spec++; maxlen--; continue; }
 300         spec++;
 301         if (*spec == '%') { *p++ = *spec++; maxlen--; continue; }
 302         spec += WPRINTF_ParseFormatA( spec, &format );
 303         switch(format.type)
 304         {
 305         case WPR_WCHAR:  /* No Unicode in Win16 */
 306         case WPR_CHAR:
 307             cur_arg.char_view = VA_ARG16( args, CHAR );
 308             break;
 309         case WPR_WSTRING:  /* No Unicode in Win16 */
 310         case WPR_STRING:
 311             seg_str = VA_ARG16( args, SEGPTR );
 312             if (IsBadReadPtr16(seg_str, 1 )) cur_arg.lpcstr_view = "";
 313             else cur_arg.lpcstr_view = PTR_SEG_TO_LIN( seg_str );
 314             break;
 315         case WPR_SIGNED:
 316             if (!(format.flags & WPRINTF_LONG))
 317             {
 318                 cur_arg.int_view = VA_ARG16( args, INT16 );
 319                 break;
 320             }
 321             /* fall through */
 322         case WPR_HEXA:
 323         case WPR_UNSIGNED:
 324             if (format.flags & WPRINTF_LONG)
 325                 cur_arg.int_view = VA_ARG16( args, UINT );
 326             else
 327                 cur_arg.int_view = VA_ARG16( args, UINT16 );
 328             break;
 329         case WPR_UNKNOWN:
 330             continue;
 331         }
 332         len = WPRINTF_GetLen( &format, &cur_arg, number, maxlen - 1 );
 333         if (!(format.flags & WPRINTF_LEFTALIGN))
 334             for (i = format.precision; i < format.width; i++, maxlen--)
 335                 *p++ = ' ';
 336         switch(format.type)
 337         {
 338         case WPR_WCHAR:  /* No Unicode in Win16 */
 339         case WPR_CHAR:
 340             *p= cur_arg.char_view;
 341             if (*p != '\0') p++;
 342             else if (format.width > 1) *p++ = ' ';
 343             else len = 0;
 344             break;
 345         case WPR_WSTRING:  /* No Unicode in Win16 */
 346         case WPR_STRING:
 347             if (len) memcpy( p, cur_arg.lpcstr_view, len );
 348             p += len;
 349             break;
 350         case WPR_HEXA:
 351             if ((format.flags & WPRINTF_PREFIX_HEX) && (maxlen > 3))
 352             {
 353                 *p++ = '0';
 354                 *p++ = (format.flags & WPRINTF_UPPER_HEX) ? 'X' : 'x';
 355                 maxlen -= 2;
 356                 len -= 2;
 357             }
 358             /* fall through */
 359         case WPR_SIGNED:
 360         case WPR_UNSIGNED:
 361             for (i = len; i < format.precision; i++, maxlen--) *p++ = '0';
 362             if (len) memcpy( p, number, len );
 363             p += len;
 364             break;
 365         case WPR_UNKNOWN:
 366             continue;
 367         }
 368         if (format.flags & WPRINTF_LEFTALIGN)
 369             for (i = format.precision; i < format.width; i++, maxlen--)
 370                 *p++ = ' ';
 371         maxlen -= len;
 372     }
 373     *p = 0;
 374     return (maxlen > 1) ? (INT)(p - buffer) : -1;
 375 }
 376
 377
 378 /***********************************************************************
 379  *           wvsnprintfA   (Not a Windows API)
 380  */
 381 INT WINAPI wvsnprintfA( LPSTR buffer, UINT maxlen, LPCSTR spec,
 382                             va_list args )
 383 {
 384     WPRINTF_FORMAT format;
 385     LPSTR p = buffer;
 386     UINT i, len;
 387     CHAR number[20];
 388     WPRINTF_DATA argData;
 389
 390     while (*spec && (maxlen > 1))
 391     {
 392         if (*spec != '%') { *p++ = *spec++; maxlen--; continue; }
 393         spec++;
 394         if (*spec == '%') { *p++ = *spec++; maxlen--; continue; }
 395         spec += WPRINTF_ParseFormatA( spec, &format );
 396         argData = WPRINTF_ExtractVAPtr( &format, &args );
 397         len = WPRINTF_GetLen( &format, &argData, number, maxlen - 1 );
 398         if (!(format.flags & WPRINTF_LEFTALIGN))
 399             for (i = format.precision; i < format.width; i++, maxlen--)
 400                 *p++ = ' ';
 401         switch(format.type)
 402         {
 403         case WPR_WCHAR:
 404             *p = argData.wchar_view;
 405             if (*p != '\0') p++;
 406             else if (format.width > 1) *p++ = ' ';
 407             else len = 0;
 408             break;
 409         case WPR_CHAR:
 410             *p = argData.char_view;
 411             if (*p != '\0') p++;
 412             else if (format.width > 1) *p++ = ' ';
 413             else len = 0;
 414             break;
 415         case WPR_STRING:
 416             memcpy( p, argData.lpcstr_view, len );
 417             p += len;
 418             break;
 419         case WPR_WSTRING:
 420             {
 421                 LPCWSTR ptr = argData.lpcwstr_view;
 422                 for (i = 0; i < len; i++) *p++ = (CHAR)*ptr++;
 423             }
 424             break;
 425         case WPR_HEXA:
 426             if ((format.flags & WPRINTF_PREFIX_HEX) && (maxlen > 3))
 427             {
 428                 *p++ = '0';
 429                 *p++ = (format.flags & WPRINTF_UPPER_HEX) ? 'X' : 'x';
 430                 maxlen -= 2;
 431                 len -= 2;
 432             }
 433             /* fall through */
 434         case WPR_SIGNED:
 435         case WPR_UNSIGNED:
 436             for (i = len; i < format.precision; i++, maxlen--) *p++ = '0';
 437             memcpy( p, number, len );
 438             p += len;
 439             break;
 440         case WPR_UNKNOWN:
 441             continue;
 442         }
 443         if (format.flags & WPRINTF_LEFTALIGN)
 444             for (i = format.precision; i < format.width; i++, maxlen--)
 445                 *p++ = ' ';
 446         maxlen -= len;
 447     }
 448     *p = 0;
 449     TRACE("%s\n",buffer);
 450     return (maxlen > 1) ? (INT)(p - buffer) : -1;
 451 }
 452
 453
 454 /***********************************************************************
 455  *           wvsnprintfW   (Not a Windows API)
 456  */
 457 INT WINAPI wvsnprintfW( LPWSTR buffer, UINT maxlen, LPCWSTR spec,
 458                             va_list args )
 459 {
 460     WPRINTF_FORMAT format;
 461     LPWSTR p = buffer;
 462     UINT i, len;
 463     CHAR number[20];
 464     WPRINTF_DATA argData;
 465
 466     TRACE("%p %u %s\n", buffer, maxlen, debugstr_w(spec));
 467
 468     while (*spec && (maxlen > 1))
 469     {
 470         if (*spec != '%') { *p++ = *spec++; maxlen--; continue; }
 471         spec++;
 472         if (*spec == '%') { *p++ = *spec++; maxlen--; continue; }
 473         spec += WPRINTF_ParseFormatW( spec, &format );
 474         argData = WPRINTF_ExtractVAPtr( &format, &args );
 475         len = WPRINTF_GetLen( &format, &argData, number, maxlen - 1 );
 476         if (!(format.flags & WPRINTF_LEFTALIGN))
 477             for (i = format.precision; i < format.width; i++, maxlen--)
 478                 *p++ = ' ';
 479         switch(format.type)
 480         {
 481         case WPR_WCHAR:
 482             *p = argData.wchar_view;
 483             if (*p != '\0') p++;
 484             else if (format.width > 1) *p++ = ' ';
 485             else len = 0;
 486             break;
 487         case WPR_CHAR:
 488             *p = argData.char_view;
 489             if (*p != '\0') p++;
 490             else if (format.width > 1) *p++ = ' ';
 491             else len = 0;
 492             break;
 493         case WPR_STRING:
 494             {
 495                 LPCSTR ptr = argData.lpcstr_view;
 496                 for (i = 0; i < len; i++) *p++ = (WCHAR)*ptr++;
 497             }
 498             break;
 499         case WPR_WSTRING:
 500             if (len) memcpy( p, argData.lpcwstr_view, len * sizeof(WCHAR) );
 501             p += len;
 502             break;
 503         case WPR_HEXA:
 504             if ((format.flags & WPRINTF_PREFIX_HEX) && (maxlen > 3))
 505             {
 506                 *p++ = '0';
 507                 *p++ = (format.flags & WPRINTF_UPPER_HEX) ? 'X' : 'x';
 508                 maxlen -= 2;
 509                 len -= 2;
 510             }
 511             /* fall through */
 512         case WPR_SIGNED:
 513         case WPR_UNSIGNED:
 514             for (i = len; i < format.precision; i++, maxlen--) *p++ = '0';
 515             for (i = 0; i < len; i++) *p++ = (WCHAR)number[i];
 516             break;
 517         case WPR_UNKNOWN:
 518             continue;
 519         }
 520         if (format.flags & WPRINTF_LEFTALIGN)
 521             for (i = format.precision; i < format.width; i++, maxlen--)
 522                 *p++ = ' ';
 523         maxlen -= len;
 524     }
 525     *p = 0;
 526     return (maxlen > 1) ? (INT)(p - buffer) : -1;
 527 }
 528
 529
 530 /***********************************************************************
 531  *           wvsprintf16   (USER.421)
 532  */
 533 INT16 WINAPI wvsprintf16( LPSTR buffer, LPCSTR spec, LPCVOID args )
 534 {
 535     INT16 res;
 536
 537     TRACE("for %p got:\n",buffer);
 538     res = wvsnprintf16( buffer, 1024, spec, args );
 539     return ( res == -1 ) ? 1024 : res;
 540 }
 541
 542
 543 /***********************************************************************
 544  *           wvsprintfA   (USER32.587)
 545  */
 546 INT WINAPI wvsprintfA( LPSTR buffer, LPCSTR spec, va_list args )
 547 {
 548     INT res;
 549
 550     TRACE("for %p got:\n",buffer);
 551     res = wvsnprintfA( buffer, 1024, spec, args );
 552     return ( res == -1 ) ? 1024 : res;
 553 }
 554
 555
 556 /***********************************************************************
 557  *           wvsprintfW   (USER32.588)
 558  */
 559 INT WINAPI wvsprintfW( LPWSTR buffer, LPCWSTR spec, va_list args )
 560 {
 561     INT res;
 562
 563     TRACE("for %p got:\n",buffer);
 564         /* FIXME: in w*printfW, */
 565         /*        is maximum buffer size 1024-bytes? (or 1024-wchars?) */
 566         res = wvsnprintfW( buffer, 1024, spec, args );
 567     return ( res == -1 ) ? 1024 : res;
 568 }
 569
 570
 571 /***********************************************************************
 572  *           wsprintf16   (USER.420)
 573  */
 574 /* Winelib version */
 575 INT16 WINAPIV wsprintf16( LPSTR buffer, LPCSTR spec, ... )
 576 {
 577     va_list valist;
 578     INT16 res;
 579
 580     TRACE("for %p got:\n",buffer);
 581     va_start( valist, spec );
 582     /* Note: we call the 32-bit version, because the args are 32-bit */
 583     res = (INT16)wvsnprintfA( buffer, 1024, spec, valist );
 584     va_end( valist );
 585     return ( res == -1 ) ? 1024 : res;
 586 }
 587
 588 /* Emulator version */
 589 INT16 WINAPIV WIN16_wsprintf16(void)
 590 {
 591     VA_LIST16 valist;
 592     INT16 res;
 593     SEGPTR buffer, spec;
 594
 595     VA_START16( valist );
 596     buffer = VA_ARG16( valist, SEGPTR );
 597     spec   = VA_ARG16( valist, SEGPTR );
 598     TRACE("got:\n");
 599     res = wvsnprintf16( (LPSTR)PTR_SEG_TO_LIN(buffer), 1024,
 600                         (LPCSTR)PTR_SEG_TO_LIN(spec), valist );
 601     VA_END16( valist );
 602     return ( res == -1 ) ? 1024 : res;
 603 }
 604
 605
 606 /***********************************************************************
 607  *           wsprintfA   (USER32.585)
 608  */
 609 INT WINAPIV wsprintfA( LPSTR buffer, LPCSTR spec, ... )
 610 {
 611     va_list valist;
 612     INT res;
 613
 614     TRACE("for %p got:\n",buffer);
 615     va_start( valist, spec );
 616     res = wvsnprintfA( buffer, 1024, spec, valist );
 617     va_end( valist );
 618     return ( res == -1 ) ? 1024 : res;
 619 }
 620
 621
 622 /***********************************************************************
 623  *           wsprintfW   (USER32.586)
 624  */
 625 INT WINAPIV wsprintfW( LPWSTR buffer, LPCWSTR spec, ... )
 626 {
 627     va_list valist;
 628     INT res;
 629
 630     TRACE("wsprintfW for %p\n",buffer);
 631     va_start( valist, spec );
 632     res = wvsnprintfW( buffer, 1024, spec, valist );
 633     va_end( valist );
 634     return ( res == -1 ) ? 1024 : res;
 635 }
 636
 637
 638 /***********************************************************************
 639  *           wsnprintfA   (Not a Windows API)
 640  */
 641 INT WINAPIV wsnprintfA( LPSTR buffer, UINT maxlen, LPCSTR spec, ... )
 642 {
 643     va_list valist;
 644     INT res;
 645
 646     va_start( valist, spec );
 647     res = wvsnprintfA( buffer, maxlen, spec, valist );
 648     va_end( valist );
 649     return res;
 650 }
 651
 652
 653 /***********************************************************************
 654  *           wsnprintfW   (Not a Windows API)
 655  */
 656 INT WINAPIV wsnprintfW( LPWSTR buffer, UINT maxlen, LPCWSTR spec, ... )
 657 {
 658     va_list valist;
 659     INT res;
 660
 661     va_start( valist, spec );
 662     res = wvsnprintfW( buffer, maxlen, spec, valist );
 663     va_end( valist );
 664     return res;
 665 }
 666
 667 /***********************************************************************
 668  *           _DebugOutput                    (KERNEL.328)
 669  */
 670 void WINAPIV _DebugOutput( void )
 671 {
 672     VA_LIST16 valist;
 673     WORD flags;
 674     SEGPTR spec;
 675     int i, nSeg = 0;
 676     NE_MODULE *pModule;
 677     char caller[101], temp[512];
 678
 679     /* Decode caller address */
 680     pModule = NE_GetPtr( CURRENT_STACK16->cs );
 681     if ( pModule )
 682     {
 683         SEGTABLEENTRY *pSeg = NE_SEG_TABLE( pModule );
 684         for ( i = 0; i < pModule->seg_count; i++, pSeg++ )
 685             if ( GlobalHandleToSel16( pSeg->hSeg ) == CURRENT_STACK16->cs )
 686             {
 687                 nSeg = i+1;
 688                 break;
 689             }
 690     }
 691     if ( nSeg )
 692         sprintf( caller, "%s %02X:%04X", NE_MODULE_NAME( pModule ),
 693                                          nSeg, CURRENT_STACK16->ip );
 694     else
 695         sprintf( caller, "%04X:%04X", CURRENT_STACK16->cs, CURRENT_STACK16->ip );
 696
 697     /* Build debug message string */
 698     VA_START16( valist );
 699     flags = VA_ARG16( valist, WORD );
 700     spec  = VA_ARG16( valist, SEGPTR );
 701     wvsnprintf16( temp, sizeof(temp), (LPCSTR)PTR_SEG_TO_LIN(spec), valist );
 702
 703     /* Output */
 704     DPRINTF( "_DebugOutput: %s %04X %s\n",
 705              caller, flags, debugstr_an(temp, sizeof(temp)) );
 706 }
 707