2 * MSVCRT string functions
4 * Copyright 1996,1998 Marcus Meissner
5 * Copyright 1996 Jukka Iivonen
6 * Copyright 1997,2000 Uwe Bonnes
7 * Copyright 2000 Jon Griffiths
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.
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.
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
24 #define _ISOC99_SOURCE
26 #include "wine/port.h"
34 #include "wine/debug.h"
36 WINE_DEFAULT_DEBUG_CHANNEL(msvcrt);
38 /*********************************************************************
42 char* CDECL _strdup(const char* str)
46 char * ret = MSVCRT_malloc(strlen(str)+1);
47 if (ret) strcpy( ret, str );
53 /*********************************************************************
54 * _strlwr_s (MSVCRT.@)
56 int CDECL _strlwr_s(char *str, MSVCRT_size_t len)
62 *MSVCRT__errno() = MSVCRT_EINVAL;
75 *MSVCRT__errno() = MSVCRT_EINVAL;
88 /*********************************************************************
91 char* CDECL MSVCRT__strnset(char* str, int value, MSVCRT_size_t len)
99 /*********************************************************************
102 char* CDECL _strrev(char* str)
108 for (p1 = str, p2 = str + strlen(str) - 1; p2 > p1; ++p1, --p2)
118 /*********************************************************************
121 char* CDECL _strset(char* str, int value)
130 /*********************************************************************
133 char * CDECL MSVCRT_strtok( char *str, const char *delim )
135 thread_data_t *data = msvcrt_get_thread_data();
139 if (!(str = data->strtok_next)) return NULL;
141 while (*str && strchr( delim, *str )) str++;
142 if (!*str) return NULL;
144 while (*str && !strchr( delim, *str )) str++;
145 if (*str) *str++ = 0;
146 data->strtok_next = str;
150 /*********************************************************************
151 * strtok_s (MSVCRT.@)
153 char * CDECL MSVCRT_strtok_s(char *str, const char *delim, char **ctx)
155 if(!delim || !ctx || (!str && !*ctx)) {
156 MSVCRT__invalid_parameter(NULL, NULL, NULL, 0, 0);
157 *MSVCRT__errno() = MSVCRT_EINVAL;
164 while(*str && strchr(delim, *str))
170 while(**ctx && !strchr(delim, **ctx))
178 /*********************************************************************
181 void CDECL MSVCRT__swab(char* src, char* dst, int len)
185 len = (unsigned)len >> 1;
197 /*********************************************************************
198 * strtod_l (MSVCRT.@)
200 double CDECL MSVCRT_strtod_l( const char *str, char **end, MSVCRT__locale_t locale)
202 unsigned __int64 d=0, hlp;
207 BOOL found_digit = FALSE;
210 MSVCRT__invalid_parameter(NULL, NULL, NULL, 0, 0);
211 *MSVCRT__errno() = MSVCRT_EINVAL;
216 locale = get_locale();
218 /* FIXME: use *_l functions */
231 hlp = d*10+*(p++)-'0';
232 if(d>MSVCRT_UI64_MAX/10 || hlp<d) {
243 if(*p == *locale->locinfo->lconv->decimal_point)
248 hlp = d*10+*(p++)-'0';
249 if(d>MSVCRT_UI64_MAX/10 || hlp<d)
264 if(*p=='e' || *p=='E' || *p=='d' || *p=='D') {
276 if(e>INT_MAX/10 || (e=e*10+*p-'0')<0)
282 if(exp<0 && e<0 && exp+e>=0) exp = INT_MIN;
283 else if(exp>0 && e>0 && exp+e<0) exp = INT_MAX;
286 if(*p=='-' || *p=='+')
292 fpcontrol = _control87(0, 0);
293 _control87(MSVCRT__EM_DENORMAL|MSVCRT__EM_INVALID|MSVCRT__EM_ZERODIVIDE
294 |MSVCRT__EM_OVERFLOW|MSVCRT__EM_UNDERFLOW|MSVCRT__EM_INEXACT, 0xffffffff);
297 ret = (double)sign*d*pow(10, exp);
299 ret = (double)sign*d/pow(10, -exp);
301 _control87(fpcontrol, 0xffffffff);
303 if((d && ret==0.0) || isinf(ret))
304 *MSVCRT__errno() = MSVCRT_ERANGE;
312 /*********************************************************************
315 double CDECL MSVCRT_strtod( const char *str, char **end )
317 return MSVCRT_strtod_l( str, end, NULL );
320 /*********************************************************************
323 double CDECL MSVCRT_atof( const char *str )
325 return MSVCRT_strtod_l(str, NULL, NULL);
328 /*********************************************************************
331 double CDECL MSVCRT__atof_l( const char *str, MSVCRT__locale_t locale)
333 return MSVCRT_strtod_l(str, NULL, locale);
336 /*********************************************************************
339 int CDECL MSVCRT_strcoll( const char* str1, const char* str2 )
341 /* FIXME: handle Windows locale */
342 return strcoll( str1, str2 );
345 /*********************************************************************
346 * strcpy_s (MSVCRT.@)
348 int CDECL MSVCRT_strcpy_s( char* dst, MSVCRT_size_t elem, const char* src )
351 if(!elem) return MSVCRT_EINVAL;
352 if(!dst) return MSVCRT_EINVAL;
356 return MSVCRT_EINVAL;
359 for(i = 0; i < elem; i++)
361 if((dst[i] = src[i]) == '\0') return 0;
364 return MSVCRT_ERANGE;
367 /*********************************************************************
368 * strcat_s (MSVCRT.@)
370 int CDECL MSVCRT_strcat_s( char* dst, MSVCRT_size_t elem, const char* src )
373 if(!dst) return MSVCRT_EINVAL;
374 if(elem == 0) return MSVCRT_EINVAL;
378 return MSVCRT_EINVAL;
381 for(i = 0; i < elem; i++)
385 for(j = 0; (j + i) < elem; j++)
387 if((dst[j + i] = src[j]) == '\0') return 0;
391 /* Set the first element to 0, not the first element after the skipped part */
393 return MSVCRT_ERANGE;
396 /*********************************************************************
399 MSVCRT_size_t CDECL MSVCRT_strxfrm( char *dest, const char *src, MSVCRT_size_t len )
401 /* FIXME: handle Windows locale */
402 return strxfrm( dest, src, len );
405 /*********************************************************************
406 * _stricoll (MSVCRT.@)
408 int CDECL MSVCRT__stricoll( const char* str1, const char* str2 )
410 /* FIXME: handle collates */
411 TRACE("str1 %s str2 %s\n", debugstr_a(str1), debugstr_a(str2));
412 return lstrcmpiA( str1, str2 );
415 /********************************************************************
416 * _atoldbl (MSVCRT.@)
418 int CDECL MSVCRT__atoldbl(MSVCRT__LDOUBLE *value, const char *str)
420 /* FIXME needs error checking for huge/small values */
422 TRACE("str %s value %p\n",str,value);
423 value->x = strtold(str,0);
425 FIXME("stub, str %s value %p\n",str,value);
430 /********************************************************************
431 * __STRINGTOLD (MSVCRT.@)
433 int CDECL __STRINGTOLD( MSVCRT__LDOUBLE *value, char **endptr, const char *str, int flags )
436 FIXME("%p %p %s %x partial stub\n", value, endptr, str, flags );
437 value->x = strtold(str,endptr);
439 FIXME("%p %p %s %x stub\n", value, endptr, str, flags );
444 /******************************************************************
447 MSVCRT_long CDECL MSVCRT_strtol(const char* nptr, char** end, int base)
449 /* wrapper to forward libc error code to msvcrt's error codes */
453 ret = strtol(nptr, end, base);
456 case ERANGE: *MSVCRT__errno() = MSVCRT_ERANGE; break;
457 case EINVAL: *MSVCRT__errno() = MSVCRT_EINVAL; break;
459 /* cope with the fact that we may use 64bit long integers on libc
460 * while msvcrt always uses 32bit long integers
462 if (ret > MSVCRT_LONG_MAX)
464 ret = MSVCRT_LONG_MAX;
465 *MSVCRT__errno() = MSVCRT_ERANGE;
467 else if (ret < -MSVCRT_LONG_MAX - 1)
469 ret = -MSVCRT_LONG_MAX - 1;
470 *MSVCRT__errno() = MSVCRT_ERANGE;
478 /******************************************************************
481 MSVCRT_ulong CDECL MSVCRT_strtoul(const char* nptr, char** end, int base)
483 /* wrapper to forward libc error code to msvcrt's error codes */
487 ret = strtoul(nptr, end, base);
490 case ERANGE: *MSVCRT__errno() = MSVCRT_ERANGE; break;
491 case EINVAL: *MSVCRT__errno() = MSVCRT_EINVAL; break;
493 /* cope with the fact that we may use 64bit long integers on libc
494 * while msvcrt always uses 32bit long integers
496 if (ret > MSVCRT_ULONG_MAX)
498 ret = MSVCRT_ULONG_MAX;
499 *MSVCRT__errno() = MSVCRT_ERANGE;
507 /******************************************************************
510 MSVCRT_size_t CDECL MSVCRT_strnlen(const char *s, MSVCRT_size_t maxlen)
514 for(i=0; i<maxlen; i++)
520 /*********************************************************************
521 * _strtoi64_l (MSVCRT.@)
523 * FIXME: locale parameter is ignored
525 __int64 CDECL MSVCRT_strtoi64_l(const char *nptr, char **endptr, int base, MSVCRT__locale_t locale)
527 BOOL negative = FALSE;
530 TRACE("(%s %p %d %p)\n", nptr, endptr, base, locale);
532 if(!nptr || base<0 || base>36 || base==1) {
533 MSVCRT__invalid_parameter(NULL, NULL, NULL, 0, 0);
537 while(isspace(*nptr)) nptr++;
542 } else if(*nptr == '+')
545 if((base==0 || base==16) && *nptr=='0' && tolower(*(nptr+1))=='x') {
558 char cur = tolower(*nptr);
566 if(cur<'a' || cur>='a'+base-10)
576 if(!negative && (ret>MSVCRT_I64_MAX/base || ret*base>MSVCRT_I64_MAX-v)) {
577 ret = MSVCRT_I64_MAX;
578 *MSVCRT__errno() = MSVCRT_ERANGE;
579 } else if(negative && (ret<MSVCRT_I64_MIN/base || ret*base<MSVCRT_I64_MIN-v)) {
580 ret = MSVCRT_I64_MIN;
581 *MSVCRT__errno() = MSVCRT_ERANGE;
587 *endptr = (char*)nptr;
592 /*********************************************************************
593 * _strtoi64 (MSVCRT.@)
595 __int64 CDECL MSVCRT_strtoi64(const char *nptr, char **endptr, int base)
597 return MSVCRT_strtoi64_l(nptr, endptr, base, NULL);
600 /*********************************************************************
601 * _strtoui64_l (MSVCRT.@)
603 * FIXME: locale parameter is ignored
605 unsigned __int64 CDECL MSVCRT_strtoui64_l(const char *nptr, char **endptr, int base, MSVCRT__locale_t locale)
607 BOOL negative = FALSE;
608 unsigned __int64 ret = 0;
610 TRACE("(%s %p %d %p)\n", nptr, endptr, base, locale);
612 if(!nptr || base<0 || base>36 || base==1) {
613 MSVCRT__invalid_parameter(NULL, NULL, NULL, 0, 0);
617 while(isspace(*nptr)) nptr++;
622 } else if(*nptr == '+')
625 if((base==0 || base==16) && *nptr=='0' && tolower(*(nptr+1))=='x') {
638 char cur = tolower(*nptr);
646 if(cur<'a' || cur>='a'+base-10)
653 if(ret>MSVCRT_UI64_MAX/base || ret*base>MSVCRT_UI64_MAX-v) {
654 ret = MSVCRT_UI64_MAX;
655 *MSVCRT__errno() = MSVCRT_ERANGE;
661 *endptr = (char*)nptr;
663 return negative ? -ret : ret;
666 /*********************************************************************
667 * _strtoui64 (MSVCRT.@)
669 unsigned __int64 CDECL MSVCRT_strtoui64(const char *nptr, char **endptr, int base)
671 return MSVCRT_strtoui64_l(nptr, endptr, base, NULL);
674 /*********************************************************************
677 int CDECL _itoa_s(int value, char *str, MSVCRT_size_t size, int radix)
679 unsigned int val, digit;
681 char buffer[33], *pos;
684 if (!str || !size || radix < 2 || radix > 36)
689 *MSVCRT__errno() = MSVCRT_EINVAL;
690 return MSVCRT_EINVAL;
693 if (value < 0 && radix == 10)
713 *--pos = '0' + digit;
715 *--pos = 'a' + digit - 10;
722 len = buffer + 33 - pos;
728 /* Copy the temporary buffer backwards up to the available number of
729 * characters. Don't copy the negative sign if present. */
737 for (pos = buffer + 31, i = 0; i < size; i++)
741 *MSVCRT__errno() = MSVCRT_ERANGE;
742 return MSVCRT_ERANGE;
745 memcpy(str, pos, len);
749 /*********************************************************************
750 * _ui64toa_s (MSVCRT.@)
752 int CDECL MSVCRT__ui64toa_s(unsigned __int64 value, char *str,
753 MSVCRT_size_t size, int radix)
755 char buffer[65], *pos;
758 if(!str || radix<2 || radix>36) {
759 MSVCRT__invalid_parameter(NULL, NULL, NULL, 0, 0);
760 *MSVCRT__errno() = MSVCRT_EINVAL;
761 return MSVCRT_EINVAL;
774 *--pos = 'a'+digit-10;
777 if(buffer-pos+65 > size) {
778 MSVCRT__invalid_parameter(NULL, NULL, NULL, 0, 0);
779 *MSVCRT__errno() = MSVCRT_EINVAL;
780 return MSVCRT_EINVAL;
783 memcpy(str, pos, buffer-pos+65);
787 /*********************************************************************
788 * _ultoa_s (MSVCRT.@)
790 int CDECL _ultoa_s(MSVCRT_ulong value, char *str, MSVCRT_size_t size, int radix)
793 char buffer[33], *pos;
796 if (!str || !size || radix < 2 || radix > 36)
801 *MSVCRT__errno() = MSVCRT_EINVAL;
802 return MSVCRT_EINVAL;
810 digit = value % radix;
814 *--pos = '0' + digit;
816 *--pos = 'a' + digit - 10;
820 len = buffer + 33 - pos;
826 /* Copy the temporary buffer backwards up to the available number of
829 for (pos = buffer + 31, i = 0; i < size; i++)
833 *MSVCRT__errno() = MSVCRT_ERANGE;
834 return MSVCRT_ERANGE;
837 memcpy(str, pos, len);
841 #define I10_OUTPUT_MAX_PREC 21
842 /* Internal structure used by $I10_OUTPUT */
843 struct _I10_OUTPUT_DATA {
847 char str[I10_OUTPUT_MAX_PREC+1]; /* add space for '\0' */
850 /*********************************************************************
851 * $I10_OUTPUT (MSVCRT.@)
852 * ld - long double to be printed to data
853 * prec - precision of part, we're interested in
854 * flag - 0 for first prec digits, 1 for fractional part
855 * data - data to be populated
858 * 0 if given double is NaN or INF
862 * Native sets last byte of data->str to '0' or '9', I don't know what
863 * it means. Current implementation sets it always to '0'.
865 int CDECL MSVCRT_I10_OUTPUT(MSVCRT__LDOUBLE ld, int prec, int flag, struct _I10_OUTPUT_DATA *data)
867 static const char inf_str[] = "1#INF";
868 static const char nan_str[] = "1#QNAN";
872 char buf[I10_OUTPUT_MAX_PREC+9]; /* 9 = strlen("0.e+0000") + '\0' */
875 TRACE("(%lf %d %x %p)\n", d, prec, flag, data);
886 memcpy(data->str, inf_str, sizeof(inf_str));
894 memcpy(data->str, nan_str, sizeof(nan_str));
900 int exp = 1+floor(log10(d));
908 if(prec+1 > I10_OUTPUT_MAX_PREC)
909 prec = I10_OUTPUT_MAX_PREC-1;
915 sprintf(format, "%%.%dle", prec);
916 sprintf(buf, format, d);
919 data->pos = atoi(buf+prec+3);
923 for(p = buf+prec+1; p>buf+1 && *p=='0'; p--);
926 memcpy(data->str, buf+1, data->len);
927 data->str[data->len] = '\0';
929 if(buf[1]!='0' && prec-data->len+1>0)
930 memcpy(data->str+data->len+1, buf+data->len+1, prec-data->len+1);
934 #undef I10_OUTPUT_MAX_PREC