dlls/msvcrt/printf.h

   1 /*
   2  * Copyright 2011 Piotr Caban for CodeWeavers
   3  *
   4  * This library is free software; you can redistribute it and/or
   5  * modify it under the terms of the GNU Lesser General Public
   6  * License as published by the Free Software Foundation; either
   7  * version 2.1 of the License, or (at your option) any later version.
   8  *
   9  * This library is distributed in the hope that it will be useful,
  10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  12  * Lesser General Public License for more details.
  13  *
  14  * You should have received a copy of the GNU Lesser General Public
  15  * License along with this library; if not, write to the Free Software
  16  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
  17  */
  18
  19 #ifdef PRINTF_WIDE
  20 #define APICHAR MSVCRT_wchar_t
  21 #define CONVCHAR char
  22 #define FUNC_NAME(func) func ## _w
  23 #else
  24 #define APICHAR char
  25 #define CONVCHAR MSVCRT_wchar_t
  26 #define FUNC_NAME(func) func ## _a
  27 #endif
  28
  29 typedef struct FUNC_NAME(pf_flags_t)
  30 {
  31     APICHAR Sign, LeftAlign, Alternate, PadZero;
  32     int FieldLength, Precision;
  33     APICHAR IntegerLength, IntegerDouble;
  34     APICHAR WideString;
  35     APICHAR Format;
  36 } FUNC_NAME(pf_flags);
  37
  38 struct FUNC_NAME(_str_ctx) {
  39     MSVCRT_size_t len;
  40     APICHAR *buf;
  41 };
  42
  43 static int FUNC_NAME(puts_clbk_str)(void *ctx, int len, const APICHAR *str)
  44 {
  45     struct FUNC_NAME(_str_ctx) *out = ctx;
  46
  47     if(!out->buf)
  48         return len;
  49
  50     if(out->len < len) {
  51         memcpy(out->buf, str, out->len);
  52         out->buf += out->len;
  53         out->len = 0;
  54         return -1;
  55     }
  56
  57     memcpy(out->buf, str, len*sizeof(APICHAR));
  58     out->buf += len;
  59     out->len -= len;
  60     return len;
  61 }
  62
  63 static inline const APICHAR* FUNC_NAME(pf_parse_int)(const APICHAR *fmt, int *val)
  64 {
  65     *val = 0;
  66
  67     while(isdigit(*fmt)) {
  68         *val *= 10;
  69         *val += *fmt++ - '0';
  70     }
  71
  72     return fmt;
  73 }
  74
  75 /* pf_fill: takes care of signs, alignment, zero and field padding */
  76 static inline int FUNC_NAME(pf_fill)(FUNC_NAME(puts_clbk) pf_puts, void *puts_ctx,
  77         int len, FUNC_NAME(pf_flags) *flags, BOOL left)
  78 {
  79     int i, r = 0, written;
  80
  81     if(flags->Sign && !(flags->Format=='d' || flags->Format=='i'))
  82         flags->Sign = 0;
  83
  84     if(left && flags->Sign) {
  85         flags->FieldLength--;
  86         if(flags->PadZero)
  87             r = pf_puts(puts_ctx, 1, &flags->Sign);
  88     }
  89     written = r;
  90
  91     if((!left && flags->LeftAlign) || (left && !flags->LeftAlign)) {
  92         APICHAR ch;
  93
  94         if(left && flags->PadZero)
  95             ch = '0';
  96         else
  97             ch = ' ';
  98
  99         for(i=0; i<flags->FieldLength-len && r>=0; i++) {
 100             r = pf_puts(puts_ctx, 1, &ch);
 101             written += r;
 102         }
 103     }
 104
 105
 106     if(r>=0 && left && flags->Sign && !flags->PadZero) {
 107         r = pf_puts(puts_ctx, 1, &flags->Sign);
 108         written += r;
 109     }
 110
 111     return r>=0 ? written : r;
 112 }
 113
 114 static inline int FUNC_NAME(pf_output_wstr)(FUNC_NAME(puts_clbk) pf_puts, void *puts_ctx,
 115         const MSVCRT_wchar_t *str, int len, MSVCRT_pthreadlocinfo locinfo)
 116 {
 117 #ifdef PRINTF_WIDE
 118     return pf_puts(puts_ctx, len, str);
 119 #else
 120     LPSTR out;
 121     int len_a = WideCharToMultiByte(locinfo->lc_codepage, 0, str, len, NULL, 0, NULL, NULL);
 122
 123     out = HeapAlloc(GetProcessHeap(), 0, len_a);
 124     if(!out)
 125         return -1;
 126
 127     WideCharToMultiByte(locinfo->lc_codepage, 0, str, len, out, len_a, NULL, NULL);
 128     len = pf_puts(puts_ctx, len_a, out);
 129     HeapFree(GetProcessHeap(), 0, out);
 130     return len;
 131 #endif
 132 }
 133
 134 static inline int FUNC_NAME(pf_output_str)(FUNC_NAME(puts_clbk) pf_puts, void *puts_ctx,
 135         const char *str, int len, MSVCRT_pthreadlocinfo locinfo)
 136 {
 137 #ifdef PRINTF_WIDE
 138     LPWSTR out;
 139     int len_w = MultiByteToWideChar(locinfo->lc_codepage, 0, str, len, NULL, 0);
 140
 141     out = HeapAlloc(GetProcessHeap(), 0, len_w*sizeof(WCHAR));
 142     if(!out)
 143         return -1;
 144
 145     MultiByteToWideChar(locinfo->lc_codepage, 0, str, len, out, len_w);
 146     len = pf_puts(puts_ctx, len_w, out);
 147     HeapFree(GetProcessHeap(), 0, out);
 148     return len;
 149 #else
 150     return pf_puts(puts_ctx, len, str);
 151 #endif
 152 }
 153
 154 static inline int FUNC_NAME(pf_output_format_wstr)(FUNC_NAME(puts_clbk) pf_puts, void *puts_ctx,
 155         const MSVCRT_wchar_t *str, int len, FUNC_NAME(pf_flags) *flags, MSVCRT_pthreadlocinfo locinfo)
 156 {
 157     int r, ret;
 158
 159     if(len < 0)
 160         len = strlenW(str);
 161
 162     if(flags->Precision>=0 && flags->Precision<len)
 163         len = flags->Precision;
 164
 165     r = FUNC_NAME(pf_fill)(pf_puts, puts_ctx, len, flags, TRUE);
 166     ret = r;
 167     if(r >= 0) {
 168         r = FUNC_NAME(pf_output_wstr)(pf_puts, puts_ctx, str, len, locinfo);
 169         ret += r;
 170     }
 171     if(r >= 0) {
 172         r = FUNC_NAME(pf_fill)(pf_puts, puts_ctx, len, flags, FALSE);
 173         ret += r;
 174     }
 175
 176     return r>=0 ? ret : r;
 177 }
 178
 179 static inline int FUNC_NAME(pf_output_format_str)(FUNC_NAME(puts_clbk) pf_puts, void *puts_ctx,
 180         const char *str, int len, FUNC_NAME(pf_flags) *flags, MSVCRT_pthreadlocinfo locinfo)
 181 {
 182     int r, ret;
 183
 184     if(len < 0)
 185         len = strlen(str);
 186
 187     if(flags->Precision>=0 && flags->Precision<len)
 188         len = flags->Precision;
 189
 190     r = FUNC_NAME(pf_fill)(pf_puts, puts_ctx, len, flags, TRUE);
 191     ret = r;
 192     if(r >= 0) {
 193         r = FUNC_NAME(pf_output_str)(pf_puts, puts_ctx, str, len, locinfo);
 194         ret += r;
 195     }
 196     if(r >= 0) {
 197         r = FUNC_NAME(pf_fill)(pf_puts, puts_ctx, len, flags, FALSE);
 198         ret += r;
 199     }
 200
 201     return r>=0 ? ret : r;
 202 }
 203
 204 static inline int FUNC_NAME(pf_handle_string)(FUNC_NAME(puts_clbk) pf_puts, void *puts_ctx,
 205         const void *str, int len, FUNC_NAME(pf_flags) *flags, MSVCRT_pthreadlocinfo locinfo)
 206 {
 207 #ifdef PRINTF_WIDE
 208     static const MSVCRT_wchar_t nullW[] = {'(','n','u','l','l',')',0};
 209
 210     if(!str)
 211         return FUNC_NAME(pf_output_format_wstr)(pf_puts, puts_ctx, nullW, 6, flags, locinfo);
 212 #else
 213     if(!str)
 214         return FUNC_NAME(pf_output_format_str)(pf_puts, puts_ctx, "(null)", 6, flags, locinfo);
 215 #endif
 216
 217     if(flags->WideString || flags->IntegerLength=='l')
 218         return FUNC_NAME(pf_output_format_wstr)(pf_puts, puts_ctx, str, len, flags, locinfo);
 219     if(flags->IntegerLength == 'h')
 220         return FUNC_NAME(pf_output_format_str)(pf_puts, puts_ctx, str, len, flags, locinfo);
 221
 222     if((flags->Format=='S' || flags->Format=='C') == (sizeof(APICHAR)==sizeof(MSVCRT_wchar_t)))
 223         return FUNC_NAME(pf_output_format_str)(pf_puts, puts_ctx, str, len, flags, locinfo);
 224     else
 225         return FUNC_NAME(pf_output_format_wstr)(pf_puts, puts_ctx, str, len, flags, locinfo);
 226 }
 227
 228 static inline void FUNC_NAME(pf_rebuild_format_string)(char *p, FUNC_NAME(pf_flags) *flags)
 229 {
 230     *p++ = '%';
 231     if(flags->Sign)
 232         *p++ = flags->Sign;
 233     if(flags->LeftAlign)
 234         *p++ = flags->LeftAlign;
 235     if(flags->Alternate)
 236         *p++ = flags->Alternate;
 237     if(flags->PadZero)
 238         *p++ = flags->PadZero;
 239     if(flags->FieldLength) {
 240         sprintf(p, "%d", flags->FieldLength);
 241         p += strlen(p);
 242     }
 243     if(flags->Precision >= 0) {
 244         sprintf(p, ".%d", flags->Precision);
 245         p += strlen(p);
 246     }
 247     *p++ = flags->Format;
 248     *p++ = 0;
 249 }
 250
 251 /* pf_integer_conv:  prints x to buf, including alternate formats and
 252    additional precision digits, but not field characters or the sign */
 253 static inline void FUNC_NAME(pf_integer_conv)(APICHAR *buf, int buf_len,
 254         FUNC_NAME(pf_flags) *flags, LONGLONG x)
 255 {
 256     unsigned int base;
 257     const char *digits;
 258     int i, j, k;
 259
 260     if(flags->Format == 'o')
 261         base = 8;
 262     else if(flags->Format=='x' || flags->Format=='X')
 263         base = 16;
 264     else
 265         base = 10;
 266
 267     if(flags->Format == 'X')
 268         digits = "0123456789ABCDEFX";
 269     else
 270         digits = "0123456789abcdefx";
 271
 272     if(x<0 && (flags->Format=='d' || flags->Format=='i')) {
 273         x = -x;
 274         flags->Sign = '-';
 275     }
 276
 277     i = 0;
 278     if(x==0 && flags->Precision)
 279         buf[i++] = '0';
 280     else {
 281         while(x != 0) {
 282             j = (ULONGLONG)x%base;
 283             x = (ULONGLONG)x/base;
 284             buf[i++] = digits[j];
 285         }
 286     }
 287     k = flags->Precision-i;
 288     while(k-- > 0)
 289         buf[i++] = '0';
 290     if(flags->Alternate) {
 291         if(base == 16) {
 292             buf[i++] = digits[16];
 293             buf[i++] = '0';
 294         } else if(base==8 && buf[i-1]!='0')
 295             buf[i++] = '0';
 296     }
 297
 298     /* Adjust precision so pf_fill won't truncate the number later */
 299     flags->Precision = i;
 300
 301     buf[i] = '\0';
 302     j = 0;
 303     while(--i > j) {
 304         APICHAR tmp = buf[j];
 305         buf[j] = buf[i];
 306         buf[i] = tmp;
 307         j++;
 308     }
 309 }
 310
 311 static inline void FUNC_NAME(pf_fixup_exponent)(char *buf)
 312 {
 313     char* tmp = buf;
 314
 315     while(tmp[0] && toupper(tmp[0])!='E')
 316         tmp++;
 317
 318     if(tmp[0] && (tmp[1]=='+' || tmp[1]=='-') &&
 319             isdigit(tmp[2]) && isdigit(tmp[3])) {
 320         char final;
 321
 322         if (isdigit(tmp[4]))
 323             return; /* Exponent already 3 digits */
 324
 325         tmp += 2;
 326         final = tmp[2];
 327         tmp[2] = tmp[1];
 328         tmp[1] = tmp[0];
 329         tmp[0] = '0';
 330
 331         if(final == '\0') {
 332             tmp[3] = '\0';
 333             if(buf[0] == ' ')
 334                 memmove(buf, buf + 1, (tmp - buf) + 3);
 335         }
 336     }
 337 }
 338
 339 int FUNC_NAME(pf_printf)(FUNC_NAME(puts_clbk) pf_puts, void *puts_ctx, const APICHAR *fmt,
 340         MSVCRT__locale_t locale, BOOL positional_params, BOOL invoke_invalid_param_handler,
 341         args_clbk pf_args, void *args_ctx, __ms_va_list *valist)
 342 {
 343     MSVCRT_pthreadlocinfo locinfo;
 344     const APICHAR *q, *p = fmt;
 345     APICHAR buf[32];
 346     int written = 0, pos, i;
 347     FUNC_NAME(pf_flags) flags;
 348
 349     TRACE("Format is: %s\n", FUNC_NAME(debugstr)(fmt));
 350
 351     if(!locale)
 352         locinfo = get_locinfo();
 353     else
 354         locinfo = locale->locinfo;
 355
 356     while(*p) {
 357         /* output characters before '%' */
 358         for(q=p; *q && *q!='%'; q++);
 359         if(p != q) {
 360             i = pf_puts(puts_ctx, q-p, p);
 361             if(i < 0)
 362                 return i;
 363
 364             written += i;
 365             p = q;
 366             continue;
 367         }
 368
 369         /* *p == '%' here */
 370         p++;
 371
 372         /* output a single '%' character */
 373         if(*p == '%') {
 374             i = pf_puts(puts_ctx, 1, p++);
 375             if(i < 0)
 376                 return i;
 377
 378             written += i;
 379             continue;
 380         }
 381
 382         /* check parameter position */
 383         if(positional_params && (q = FUNC_NAME(pf_parse_int)(p, &pos)) && *q=='$')
 384             p = q+1;
 385         else
 386             pos = -1;
 387
 388         /* parse the flags */
 389         memset(&flags, 0, sizeof(flags));
 390         while(*p) {
 391             if(*p=='+' || *p==' ') {
 392                 if(flags.Sign != '+')
 393                     flags.Sign = *p;
 394             } else if(*p == '-')
 395                 flags.LeftAlign = *p;
 396             else if(*p == '0')
 397                 flags.PadZero = *p;
 398             else if(*p == '#')
 399                 flags.Alternate = *p;
 400             else
 401                 break;
 402
 403             p++;
 404         }
 405
 406         /* parse the widh */
 407         if(*p == '*') {
 408             p++;
 409             if(positional_params && (q = FUNC_NAME(pf_parse_int)(p, &i)) && *q=='$')
 410                 p = q+1;
 411             else
 412                 i = -1;
 413
 414             flags.FieldLength = pf_args(args_ctx, i, VT_INT, valist).get_int;
 415             if(flags.FieldLength < 0) {
 416                 flags.LeftAlign = '-';
 417                 flags.FieldLength = -flags.FieldLength;
 418             }
 419         } else while(isdigit(*p)) {
 420             flags.FieldLength *= 10;
 421             flags.FieldLength += *p++ - '0';
 422         }
 423
 424         /* parse the precision */
 425         flags.Precision = -1;
 426         if(*p == '.') {
 427             flags.Precision = 0;
 428             p++;
 429             if(*p == '*') {
 430                 p++;
 431                 if(positional_params && (q = FUNC_NAME(pf_parse_int)(p, &i)) && *q=='$')
 432                     p = q+1;
 433                 else
 434                     i = -1;
 435
 436                 flags.Precision = pf_args(args_ctx, i, VT_INT, valist).get_int;
 437             } else while(isdigit(*p)) {
 438                 flags.Precision *= 10;
 439                 flags.Precision += *p++ - '0';
 440             }
 441         }
 442
 443         /* parse argument size modifier */
 444         while(*p) {
 445             if(*p=='l' && *(p+1)=='l') {
 446                 flags.IntegerDouble++;
 447                 p += 2;
 448             } else if(*p=='h' || *p=='l' || *p=='L') {
 449                 flags.IntegerLength = *p;
 450                 p++;
 451             } else if(*p == 'I') {
 452                 if(*(p+1)=='6' && *(p+2)=='4') {
 453                     flags.IntegerDouble++;
 454                     p += 3;
 455                 } else if(*(p+1)=='3' && *(p+2)=='2')
 456                     p += 3;
 457                 else if(isdigit(*(p+1)) || !*(p+1))
 458                     break;
 459                 else
 460                     p++;
 461             } else if(*p == 'w')
 462                 flags.WideString = *p++;
 463             else if(*p == 'F')
 464                 p++; /* ignore */
 465             else
 466                 break;
 467         }
 468
 469         flags.Format = *p;
 470
 471         if(flags.Format == 's' || flags.Format == 'S') {
 472             i = FUNC_NAME(pf_handle_string)(pf_puts, puts_ctx,
 473                     pf_args(args_ctx, pos, VT_PTR, valist).get_ptr,
 474                     -1,  &flags, locinfo);
 475         } else if(flags.Format == 'c' || flags.Format == 'C') {
 476             int ch = pf_args(args_ctx, pos, VT_INT, valist).get_int;
 477
 478             if((ch&0xff) != ch)
 479                 FIXME("multibyte characters printing not supported\n");
 480
 481             i = FUNC_NAME(pf_handle_string)(pf_puts, puts_ctx, &ch, 1, &flags, locinfo);
 482         } else if(flags.Format == 'p') {
 483             flags.Format = 'X';
 484             flags.PadZero = '0';
 485             i = flags.Precision;
 486             flags.Precision = 2*sizeof(void*);
 487             FUNC_NAME(pf_integer_conv)(buf, sizeof(buf)/sizeof(APICHAR), &flags,
 488                                        (ULONG_PTR)pf_args(args_ctx, pos, VT_PTR, valist).get_ptr);
 489             flags.PadZero = 0;
 490             flags.Precision = i;
 491
 492 #ifdef PRINTF_WIDE
 493             i = FUNC_NAME(pf_output_format_wstr)(pf_puts, puts_ctx, buf, -1, &flags, locinfo);
 494 #else
 495             i = FUNC_NAME(pf_output_format_str)(pf_puts, puts_ctx, buf, -1, &flags, locinfo);
 496 #endif
 497         } else if(flags.Format == 'n') {
 498             int *used;
 499
 500             if(!n_format_enabled) {
 501                 MSVCRT_INVALID_PMT("\'n\' format specifier disabled");
 502                 *MSVCRT__errno() = MSVCRT_EINVAL;
 503                 return -1;
 504             }
 505
 506             used = pf_args(args_ctx, pos, VT_PTR, valist).get_ptr;
 507             *used = written;
 508             i = 0;
 509         } else if(flags.Format && strchr("diouxX", flags.Format)) {
 510             APICHAR *tmp = buf;
 511             int max_len = (flags.FieldLength>flags.Precision ? flags.FieldLength : flags.Precision) + 10;
 512
 513             if(max_len > sizeof(buf)/sizeof(APICHAR))
 514                 tmp = HeapAlloc(GetProcessHeap(), 0, max_len);
 515             if(!tmp)
 516                 return -1;
 517
 518             if(flags.IntegerDouble)
 519                 FUNC_NAME(pf_integer_conv)(tmp, max_len, &flags, pf_args(args_ctx, pos,
 520                             VT_I8, valist).get_longlong);
 521             else if(flags.Format=='d' || flags.Format=='i')
 522                 FUNC_NAME(pf_integer_conv)(tmp, max_len, &flags, pf_args(args_ctx, pos,
 523                             VT_INT, valist).get_int);
 524             else
 525                 FUNC_NAME(pf_integer_conv)(tmp, max_len, &flags, (unsigned)pf_args(
 526                             args_ctx, pos, VT_INT, valist).get_int);
 527
 528 #ifdef PRINTF_WIDE
 529             i = FUNC_NAME(pf_output_format_wstr)(pf_puts, puts_ctx, tmp, -1, &flags, locinfo);
 530 #else
 531             i = FUNC_NAME(pf_output_format_str)(pf_puts, puts_ctx, tmp, -1, &flags, locinfo);
 532 #endif
 533             if(tmp != buf)
 534                 HeapFree(GetProcessHeap(), 0, tmp);
 535         } else if(flags.Format && strchr("aeEfgG", flags.Format)) {
 536             char float_fmt[20], buf_a[32], *tmp = buf_a, *decimal_point;
 537             int max_len = (flags.FieldLength>flags.Precision ? flags.FieldLength : flags.Precision) + 10;
 538             double val = pf_args(args_ctx, pos, VT_R8, valist).get_double;
 539
 540             if(flags.Format=='f') {
 541                 if(val>-10.0 && val<10.0)
 542                     i = 1;
 543                 else
 544                     i = 1 + log10(val<0 ? -val : val);
 545                 /* Default precision is 6, additional space for sign, separator and nullbyte is required */
 546                 i += (flags.Precision==-1 ? 6 : flags.Precision) + 3;
 547
 548                 if(i > max_len)
 549                     max_len = i;
 550             }
 551
 552             if(max_len > sizeof(buf_a))
 553                 tmp = HeapAlloc(GetProcessHeap(), 0, max_len);
 554             if(!tmp)
 555                 return -1;
 556
 557             FUNC_NAME(pf_rebuild_format_string)(float_fmt, &flags);
 558
 559             sprintf(tmp, float_fmt, val);
 560             if(toupper(flags.Format)=='E' || toupper(flags.Format)=='G')
 561                 FUNC_NAME(pf_fixup_exponent)(tmp);
 562
 563             decimal_point = strchr(tmp, '.');
 564             if(decimal_point)
 565                 *decimal_point = *locinfo->lconv->decimal_point;
 566
 567             i = FUNC_NAME(pf_output_str)(pf_puts, puts_ctx, tmp, strlen(tmp), locinfo);
 568             if(tmp != buf_a)
 569                 HeapFree(GetProcessHeap(), 0, tmp);
 570         } else {
 571             if(invoke_invalid_param_handler) {
 572                 MSVCRT__invalid_parameter(NULL, NULL, NULL, 0, 0);
 573                 *MSVCRT__errno() = MSVCRT_EINVAL;
 574                 return -1;
 575             }
 576
 577             continue;
 578         }
 579
 580         if(i < 0)
 581             return i;
 582         written += i;
 583         p++;
 584     }
 585
 586     return written;
 587 }
 588
 589 #ifndef PRINTF_WIDE
 590 enum types_clbk_flags {
 591     TYPE_CLBK_VA_LIST = 1,
 592     TYPE_CLBK_POSITIONAL = 2,
 593     TYPE_CLBK_ERROR_POS = 4,
 594     TYPE_CLBK_ERROR_TYPE = 8
 595 };
 596
 597 /* This functions stores types of arguments. It uses args[0] internally */
 598 static printf_arg arg_clbk_type(void *ctx, int pos, int type, __ms_va_list *valist)
 599 {
 600     static const printf_arg ret;
 601     printf_arg *args = ctx;
 602
 603     if(pos == -1) {
 604         args[0].get_int |= TYPE_CLBK_VA_LIST;
 605         return ret;
 606     } else
 607         args[0].get_int |= TYPE_CLBK_POSITIONAL;
 608
 609     if(pos<1 || pos>MSVCRT__ARGMAX)
 610         args[0].get_int |= TYPE_CLBK_ERROR_POS;
 611     else if(args[pos].get_int && args[pos].get_int!=type)
 612         args[0].get_int |= TYPE_CLBK_ERROR_TYPE;
 613     else
 614         args[pos].get_int = type;
 615
 616     return ret;
 617 }
 618 #endif
 619
 620 static int FUNC_NAME(create_positional_ctx)(void *args_ctx, const APICHAR *format, __ms_va_list valist)
 621 {
 622     struct FUNC_NAME(_str_ctx) puts_ctx = {INT_MAX, NULL};
 623     printf_arg *args = args_ctx;
 624     int i, j;
 625
 626     i = FUNC_NAME(pf_printf)(FUNC_NAME(puts_clbk_str), &puts_ctx, format, NULL, TRUE, FALSE,
 627             arg_clbk_type, args_ctx, NULL);
 628     if(i < 0)
 629         return i;
 630
 631     if(args[0].get_int==0 || args[0].get_int==TYPE_CLBK_VA_LIST)
 632         return 0;
 633     if(args[0].get_int != TYPE_CLBK_POSITIONAL)
 634         return -1;
 635
 636     for(i=MSVCRT__ARGMAX; i>0; i--)
 637         if(args[i].get_int)
 638             break;
 639
 640     for(j=1; j<=i; j++) {
 641         switch(args[j].get_int) {
 642         case VT_I8:
 643             args[j].get_longlong = va_arg(valist, LONGLONG);
 644             break;
 645         case VT_INT:
 646             args[j].get_int = va_arg(valist, int);
 647             break;
 648         case VT_R8:
 649             args[j].get_double = va_arg(valist, double);
 650             break;
 651         case VT_PTR:
 652             args[j].get_ptr = va_arg(valist, void*);
 653             break;
 654         default:
 655             return -1;
 656         }
 657     }
 658
 659     return j;
 660 }
 661
 662 #undef APICHAR
 663 #undef CONVCHAR
 664 #undef FUNC_NAME