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/*
* MSVCRT string functions
*
* Copyright 1996,1998 Marcus Meissner
* Copyright 1996 Jukka Iivonen
* Copyright 1997,2000 Uwe Bonnes
* Copyright 2000 Jon Griffiths
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
*/
#define _ISOC99_SOURCE
#include "config.h"
#include "wine/port.h"
#include <stdlib.h>
#include <stdio.h>
#include <math.h>
#include <limits.h>
#include <errno.h>
#include "msvcrt.h"
#include "wine/debug.h"
WINE_DEFAULT_DEBUG_CHANNEL(msvcrt);
/*********************************************************************
* _mbsdup (MSVCRT.@)
* _strdup (MSVCRT.@)
*/
char* CDECL _strdup(const char* str)
{
if(str)
{
char * ret = MSVCRT_malloc(strlen(str)+1);
if (ret) strcpy( ret, str );
return ret;
}
else return 0;
}
/*********************************************************************
* _strlwr_s (MSVCRT.@)
*/
int CDECL _strlwr_s(char *str, MSVCRT_size_t len)
{
char *ptr = str;
if (!str || !len)
{
*MSVCRT__errno() = MSVCRT_EINVAL;
return MSVCRT_EINVAL;
}
while (len && *ptr)
{
len--;
ptr++;
}
if (!len)
{
str[0] = '\0';
*MSVCRT__errno() = MSVCRT_EINVAL;
return MSVCRT_EINVAL;
}
while (*str)
{
*str = tolower(*str);
str++;
}
return 0;
}
/*********************************************************************
* _strnset (MSVCRT.@)
*/
char* CDECL MSVCRT__strnset(char* str, int value, MSVCRT_size_t len)
{
if (len > 0 && str)
while (*str && len--)
*str++ = value;
return str;
}
/*********************************************************************
* _strrev (MSVCRT.@)
*/
char* CDECL _strrev(char* str)
{
char * p1;
char * p2;
if (str && *str)
for (p1 = str, p2 = str + strlen(str) - 1; p2 > p1; ++p1, --p2)
{
*p1 ^= *p2;
*p2 ^= *p1;
*p1 ^= *p2;
}
return str;
}
/*********************************************************************
* _strset (MSVCRT.@)
*/
char* CDECL _strset(char* str, int value)
{
char *ptr = str;
while (*ptr)
*ptr++ = value;
return str;
}
/*********************************************************************
* strtok (MSVCRT.@)
*/
char * CDECL MSVCRT_strtok( char *str, const char *delim )
{
thread_data_t *data = msvcrt_get_thread_data();
char *ret;
if (!str)
if (!(str = data->strtok_next)) return NULL;
while (*str && strchr( delim, *str )) str++;
if (!*str) return NULL;
ret = str++;
while (*str && !strchr( delim, *str )) str++;
if (*str) *str++ = 0;
data->strtok_next = str;
return ret;
}
/*********************************************************************
* strtok_s (MSVCRT.@)
*/
char * CDECL MSVCRT_strtok_s(char *str, const char *delim, char **ctx)
{
if (!MSVCRT_CHECK_PMT(delim != NULL) || !MSVCRT_CHECK_PMT(ctx != NULL) ||
!MSVCRT_CHECK_PMT(str != NULL || *ctx != NULL)) {
*MSVCRT__errno() = MSVCRT_EINVAL;
return NULL;
}
if(!str)
str = *ctx;
while(*str && strchr(delim, *str))
str++;
if(!*str)
return NULL;
*ctx = str+1;
while(**ctx && !strchr(delim, **ctx))
(*ctx)++;
if(**ctx)
*(*ctx)++ = 0;
return str;
}
/*********************************************************************
* _swab (MSVCRT.@)
*/
void CDECL MSVCRT__swab(char* src, char* dst, int len)
{
if (len > 1)
{
len = (unsigned)len >> 1;
while (len--) {
char s0 = src[0];
char s1 = src[1];
*dst++ = s1;
*dst++ = s0;
src = src + 2;
}
}
}
/*********************************************************************
* strtod_l (MSVCRT.@)
*/
double CDECL MSVCRT_strtod_l( const char *str, char **end, MSVCRT__locale_t locale)
{
unsigned __int64 d=0, hlp;
unsigned fpcontrol;
int exp=0, sign=1;
const char *p;
double ret;
BOOL found_digit = FALSE;
if (!MSVCRT_CHECK_PMT(str != NULL)) {
*MSVCRT__errno() = MSVCRT_EINVAL;
return 0;
}
if(!locale)
locale = get_locale();
/* FIXME: use *_l functions */
p = str;
while(isspace(*p))
p++;
if(*p == '-') {
sign = -1;
p++;
} else if(*p == '+')
p++;
while(isdigit(*p)) {
found_digit = TRUE;
hlp = d*10+*(p++)-'0';
if(d>MSVCRT_UI64_MAX/10 || hlp<d) {
exp++;
break;
} else
d = hlp;
}
while(isdigit(*p)) {
exp++;
p++;
}
if(*p == *locale->locinfo->lconv->decimal_point)
p++;
while(isdigit(*p)) {
found_digit = TRUE;
hlp = d*10+*(p++)-'0';
if(d>MSVCRT_UI64_MAX/10 || hlp<d)
break;
d = hlp;
exp--;
}
while(isdigit(*p))
p++;
if(!found_digit) {
if(end)
*end = (char*)str;
return 0.0;
}
if(*p=='e' || *p=='E' || *p=='d' || *p=='D') {
int e=0, s=1;
p++;
if(*p == '-') {
s = -1;
p++;
} else if(*p == '+')
p++;
if(isdigit(*p)) {
while(isdigit(*p)) {
if(e>INT_MAX/10 || (e=e*10+*p-'0')<0)
e = INT_MAX;
p++;
}
e *= s;
if(exp<0 && e<0 && exp+e>=0) exp = INT_MIN;
else if(exp>0 && e>0 && exp+e<0) exp = INT_MAX;
else exp += e;
} else {
if(*p=='-' || *p=='+')
p--;
p--;
}
}
fpcontrol = _control87(0, 0);
_control87(MSVCRT__EM_DENORMAL|MSVCRT__EM_INVALID|MSVCRT__EM_ZERODIVIDE
|MSVCRT__EM_OVERFLOW|MSVCRT__EM_UNDERFLOW|MSVCRT__EM_INEXACT, 0xffffffff);
if(exp>0)
ret = (double)sign*d*pow(10, exp);
else
ret = (double)sign*d/pow(10, -exp);
_control87(fpcontrol, 0xffffffff);
if((d && ret==0.0) || isinf(ret))
*MSVCRT__errno() = MSVCRT_ERANGE;
if(end)
*end = (char*)p;
return ret;
}
/*********************************************************************
* strtod (MSVCRT.@)
*/
double CDECL MSVCRT_strtod( const char *str, char **end )
{
return MSVCRT_strtod_l( str, end, NULL );
}
/*********************************************************************
* atof (MSVCRT.@)
*/
double CDECL MSVCRT_atof( const char *str )
{
return MSVCRT_strtod_l(str, NULL, NULL);
}
/*********************************************************************
* _atof_l (MSVCRT.@)
*/
double CDECL MSVCRT__atof_l( const char *str, MSVCRT__locale_t locale)
{
return MSVCRT_strtod_l(str, NULL, locale);
}
/*********************************************************************
* strcoll (MSVCRT.@)
*/
int CDECL MSVCRT_strcoll( const char* str1, const char* str2 )
{
/* FIXME: handle Windows locale */
return strcoll( str1, str2 );
}
/*********************************************************************
* strcpy_s (MSVCRT.@)
*/
int CDECL MSVCRT_strcpy_s( char* dst, MSVCRT_size_t elem, const char* src )
{
MSVCRT_size_t i;
if(!elem) return MSVCRT_EINVAL;
if(!dst) return MSVCRT_EINVAL;
if(!src)
{
dst[0] = '\0';
return MSVCRT_EINVAL;
}
for(i = 0; i < elem; i++)
{
if((dst[i] = src[i]) == '\0') return 0;
}
dst[0] = '\0';
return MSVCRT_ERANGE;
}
/*********************************************************************
* strcat_s (MSVCRT.@)
*/
int CDECL MSVCRT_strcat_s( char* dst, MSVCRT_size_t elem, const char* src )
{
MSVCRT_size_t i, j;
if(!dst) return MSVCRT_EINVAL;
if(elem == 0) return MSVCRT_EINVAL;
if(!src)
{
dst[0] = '\0';
return MSVCRT_EINVAL;
}
for(i = 0; i < elem; i++)
{
if(dst[i] == '\0')
{
for(j = 0; (j + i) < elem; j++)
{
if((dst[j + i] = src[j]) == '\0') return 0;
}
}
}
/* Set the first element to 0, not the first element after the skipped part */
dst[0] = '\0';
return MSVCRT_ERANGE;
}
/*********************************************************************
* strncat_s (MSVCRT.@)
*/
int CDECL MSVCRT_strncat_s( char* dst, MSVCRT_size_t elem, const char* src, MSVCRT_size_t count )
{
MSVCRT_size_t i, j;
if(!MSVCRT_CHECK_PMT(dst != 0) || !MSVCRT_CHECK_PMT(elem != 0))
return MSVCRT_EINVAL;
if(!MSVCRT_CHECK_PMT(src != 0))
{
dst[0] = '\0';
return MSVCRT_EINVAL;
}
for(i = 0; i < elem; i++)
{
if(dst[i] == '\0')
{
for(j = 0; (j + i) < elem; j++)
{
if(count == MSVCRT__TRUNCATE && j + i == elem - 1)
{
dst[j + i] = '\0';
return MSVCRT_STRUNCATE;
}
if(j == count || (dst[j + i] = src[j]) == '\0')
{
dst[j + i] = '\0';
return 0;
}
}
}
}
/* Set the first element to 0, not the first element after the skipped part */
dst[0] = '\0';
return MSVCRT_ERANGE;
}
/*********************************************************************
* strxfrm (MSVCRT.@)
*/
MSVCRT_size_t CDECL MSVCRT_strxfrm( char *dest, const char *src, MSVCRT_size_t len )
{
/* FIXME: handle Windows locale */
return strxfrm( dest, src, len );
}
/*********************************************************************
* _stricoll (MSVCRT.@)
*/
int CDECL MSVCRT__stricoll( const char* str1, const char* str2 )
{
/* FIXME: handle collates */
TRACE("str1 %s str2 %s\n", debugstr_a(str1), debugstr_a(str2));
return lstrcmpiA( str1, str2 );
}
/********************************************************************
* _atoldbl (MSVCRT.@)
*/
int CDECL MSVCRT__atoldbl(MSVCRT__LDOUBLE *value, const char *str)
{
/* FIXME needs error checking for huge/small values */
#ifdef HAVE_STRTOLD
TRACE("str %s value %p\n",str,value);
value->x = strtold(str,0);
#else
FIXME("stub, str %s value %p\n",str,value);
#endif
return 0;
}
/********************************************************************
* __STRINGTOLD (MSVCRT.@)
*/
int CDECL __STRINGTOLD( MSVCRT__LDOUBLE *value, char **endptr, const char *str, int flags )
{
#ifdef HAVE_STRTOLD
FIXME("%p %p %s %x partial stub\n", value, endptr, str, flags );
value->x = strtold(str,endptr);
#else
FIXME("%p %p %s %x stub\n", value, endptr, str, flags );
#endif
return 0;
}
/******************************************************************
* strtol (MSVCRT.@)
*/
MSVCRT_long CDECL MSVCRT_strtol(const char* nptr, char** end, int base)
{
/* wrapper to forward libc error code to msvcrt's error codes */
long ret;
errno = 0;
ret = strtol(nptr, end, base);
switch (errno)
{
case ERANGE: *MSVCRT__errno() = MSVCRT_ERANGE; break;
case EINVAL: *MSVCRT__errno() = MSVCRT_EINVAL; break;
default:
/* cope with the fact that we may use 64bit long integers on libc
* while msvcrt always uses 32bit long integers
*/
if (ret > MSVCRT_LONG_MAX)
{
ret = MSVCRT_LONG_MAX;
*MSVCRT__errno() = MSVCRT_ERANGE;
}
else if (ret < -MSVCRT_LONG_MAX - 1)
{
ret = -MSVCRT_LONG_MAX - 1;
*MSVCRT__errno() = MSVCRT_ERANGE;
}
break;
}
return ret;
}
/******************************************************************
* strtoul (MSVCRT.@)
*/
MSVCRT_ulong CDECL MSVCRT_strtoul(const char* nptr, char** end, int base)
{
/* wrapper to forward libc error code to msvcrt's error codes */
unsigned long ret;
errno = 0;
ret = strtoul(nptr, end, base);
switch (errno)
{
case ERANGE: *MSVCRT__errno() = MSVCRT_ERANGE; break;
case EINVAL: *MSVCRT__errno() = MSVCRT_EINVAL; break;
default:
/* cope with the fact that we may use 64bit long integers on libc
* while msvcrt always uses 32bit long integers
*/
if (ret > MSVCRT_ULONG_MAX)
{
ret = MSVCRT_ULONG_MAX;
*MSVCRT__errno() = MSVCRT_ERANGE;
}
break;
}
return ret;
}
/******************************************************************
* strnlen (MSVCRT.@)
*/
MSVCRT_size_t CDECL MSVCRT_strnlen(const char *s, MSVCRT_size_t maxlen)
{
MSVCRT_size_t i;
for(i=0; i<maxlen; i++)
if(!s[i]) break;
return i;
}
/*********************************************************************
* _strtoi64_l (MSVCRT.@)
*
* FIXME: locale parameter is ignored
*/
__int64 CDECL MSVCRT_strtoi64_l(const char *nptr, char **endptr, int base, MSVCRT__locale_t locale)
{
BOOL negative = FALSE;
__int64 ret = 0;
TRACE("(%s %p %d %p)\n", nptr, endptr, base, locale);
if (!MSVCRT_CHECK_PMT(nptr != NULL) || !MSVCRT_CHECK_PMT(base == 0 || base >= 2) ||
!MSVCRT_CHECK_PMT(base <= 36)) {
return 0;
}
while(isspace(*nptr)) nptr++;
if(*nptr == '-') {
negative = TRUE;
nptr++;
} else if(*nptr == '+')
nptr++;
if((base==0 || base==16) && *nptr=='0' && tolower(*(nptr+1))=='x') {
base = 16;
nptr += 2;
}
if(base == 0) {
if(*nptr=='0')
base = 8;
else
base = 10;
}
while(*nptr) {
char cur = tolower(*nptr);
int v;
if(isdigit(cur)) {
if(cur >= '0'+base)
break;
v = cur-'0';
} else {
if(cur<'a' || cur>='a'+base-10)
break;
v = cur-'a'+10;
}
if(negative)
v = -v;
nptr++;
if(!negative && (ret>MSVCRT_I64_MAX/base || ret*base>MSVCRT_I64_MAX-v)) {
ret = MSVCRT_I64_MAX;
*MSVCRT__errno() = MSVCRT_ERANGE;
} else if(negative && (ret<MSVCRT_I64_MIN/base || ret*base<MSVCRT_I64_MIN-v)) {
ret = MSVCRT_I64_MIN;
*MSVCRT__errno() = MSVCRT_ERANGE;
} else
ret = ret*base + v;
}
if(endptr)
*endptr = (char*)nptr;
return ret;
}
/*********************************************************************
* _strtoi64 (MSVCRT.@)
*/
__int64 CDECL MSVCRT_strtoi64(const char *nptr, char **endptr, int base)
{
return MSVCRT_strtoi64_l(nptr, endptr, base, NULL);
}
/*********************************************************************
* _strtoui64_l (MSVCRT.@)
*
* FIXME: locale parameter is ignored
*/
unsigned __int64 CDECL MSVCRT_strtoui64_l(const char *nptr, char **endptr, int base, MSVCRT__locale_t locale)
{
BOOL negative = FALSE;
unsigned __int64 ret = 0;
TRACE("(%s %p %d %p)\n", nptr, endptr, base, locale);
if (!MSVCRT_CHECK_PMT(nptr != NULL) || !MSVCRT_CHECK_PMT(base == 0 || base >= 2) ||
!MSVCRT_CHECK_PMT(base <= 36)) {
return 0;
}
while(isspace(*nptr)) nptr++;
if(*nptr == '-') {
negative = TRUE;
nptr++;
} else if(*nptr == '+')
nptr++;
if((base==0 || base==16) && *nptr=='0' && tolower(*(nptr+1))=='x') {
base = 16;
nptr += 2;
}
if(base == 0) {
if(*nptr=='0')
base = 8;
else
base = 10;
}
while(*nptr) {
char cur = tolower(*nptr);
int v;
if(isdigit(cur)) {
if(cur >= '0'+base)
break;
v = *nptr-'0';
} else {
if(cur<'a' || cur>='a'+base-10)
break;
v = cur-'a'+10;
}
nptr++;
if(ret>MSVCRT_UI64_MAX/base || ret*base>MSVCRT_UI64_MAX-v) {
ret = MSVCRT_UI64_MAX;
*MSVCRT__errno() = MSVCRT_ERANGE;
} else
ret = ret*base + v;
}
if(endptr)
*endptr = (char*)nptr;
return negative ? -ret : ret;
}
/*********************************************************************
* _strtoui64 (MSVCRT.@)
*/
unsigned __int64 CDECL MSVCRT_strtoui64(const char *nptr, char **endptr, int base)
{
return MSVCRT_strtoui64_l(nptr, endptr, base, NULL);
}
/*********************************************************************
* _ltoa_s (MSVCRT.@)
*/
int CDECL _ltoa_s(MSVCRT_long value, char *str, MSVCRT_size_t size, int radix)
{
MSVCRT_ulong val;
unsigned int digit;
int is_negative;
char buffer[33], *pos;
size_t len;
if (!MSVCRT_CHECK_PMT(str != NULL) || !MSVCRT_CHECK_PMT(size > 0) ||
!MSVCRT_CHECK_PMT(radix >= 2) || !MSVCRT_CHECK_PMT(radix <= 36))
{
if (str && size)
str[0] = '\0';
*MSVCRT__errno() = MSVCRT_EINVAL;
return MSVCRT_EINVAL;
}
if (value < 0 && radix == 10)
{
is_negative = 1;
val = -value;
}
else
{
is_negative = 0;
val = value;
}
pos = buffer + 32;
*pos = '\0';
do
{
digit = val % radix;
val /= radix;
if (digit < 10)
*--pos = '0' + digit;
else
*--pos = 'a' + digit - 10;
}
while (val != 0);
if (is_negative)
*--pos = '-';
len = buffer + 33 - pos;
if (len > size)
{
size_t i;
char *p = str;
/* Copy the temporary buffer backwards up to the available number of
* characters. Don't copy the negative sign if present. */
if (is_negative)
{
p++;
size--;
}
for (pos = buffer + 31, i = 0; i < size; i++)
*p++ = *pos--;
str[0] = '\0';
MSVCRT_INVALID_PMT("str[size] is too small");
*MSVCRT__errno() = MSVCRT_ERANGE;
return MSVCRT_ERANGE;
}
memcpy(str, pos, len);
return 0;
}
/*********************************************************************
* _ltow_s (MSVCRT.@)
*/
int CDECL _ltow_s(MSVCRT_long value, MSVCRT_wchar_t *str, MSVCRT_size_t size, int radix)
{
MSVCRT_ulong val;
unsigned int digit;
int is_negative;
MSVCRT_wchar_t buffer[33], *pos;
size_t len;
if (!MSVCRT_CHECK_PMT(str != NULL) || !MSVCRT_CHECK_PMT(size > 0) ||
!MSVCRT_CHECK_PMT(radix >= 2) || !MSVCRT_CHECK_PMT(radix <= 36))
{
if (str && size)
str[0] = '\0';
*MSVCRT__errno() = MSVCRT_EINVAL;
return MSVCRT_EINVAL;
}
if (value < 0 && radix == 10)
{
is_negative = 1;
val = -value;
}
else
{
is_negative = 0;
val = value;
}
pos = buffer + 32;
*pos = '\0';
do
{
digit = val % radix;
val /= radix;
if (digit < 10)
*--pos = '0' + digit;
else
*--pos = 'a' + digit - 10;
}
while (val != 0);
if (is_negative)
*--pos = '-';
len = buffer + 33 - pos;
if (len > size)
{
size_t i;
MSVCRT_wchar_t *p = str;
/* Copy the temporary buffer backwards up to the available number of
* characters. Don't copy the negative sign if present. */
if (is_negative)
{
p++;
size--;
}
for (pos = buffer + 31, i = 0; i < size; i++)
*p++ = *pos--;
MSVCRT_INVALID_PMT("str[size] is too small");
str[0] = '\0';
*MSVCRT__errno() = MSVCRT_ERANGE;
return MSVCRT_ERANGE;
}
memcpy(str, pos, len * sizeof(MSVCRT_wchar_t));
return 0;
}
/*********************************************************************
* _itoa_s (MSVCRT.@)
*/
int CDECL _itoa_s(int value, char *str, MSVCRT_size_t size, int radix)
{
return _ltoa_s(value, str, size, radix);
}
/*********************************************************************
* _itow_s (MSVCRT.@)
*/
int CDECL _itow_s(int value, MSVCRT_wchar_t *str, MSVCRT_size_t size, int radix)
{
return _ltow_s(value, str, size, radix);
}
/*********************************************************************
* _ui64toa_s (MSVCRT.@)
*/
int CDECL MSVCRT__ui64toa_s(unsigned __int64 value, char *str,
MSVCRT_size_t size, int radix)
{
char buffer[65], *pos;
int digit;
if (!MSVCRT_CHECK_PMT(str != NULL) || !MSVCRT_CHECK_PMT(size > 0) ||
!MSVCRT_CHECK_PMT(radix>=2) || !MSVCRT_CHECK_PMT(radix<=36)) {
*MSVCRT__errno() = MSVCRT_EINVAL;
return MSVCRT_EINVAL;
}
pos = buffer+64;
*pos = '\0';
do {
digit = value%radix;
value /= radix;
if(digit < 10)
*--pos = '0'+digit;
else
*--pos = 'a'+digit-10;
}while(value != 0);
if(buffer-pos+65 > size) {
MSVCRT_INVALID_PMT("str[size] is too small");
*MSVCRT__errno() = MSVCRT_EINVAL;
return MSVCRT_EINVAL;
}
memcpy(str, pos, buffer-pos+65);
return 0;
}
/*********************************************************************
* _ultoa_s (MSVCRT.@)
*/
int CDECL _ultoa_s(MSVCRT_ulong value, char *str, MSVCRT_size_t size, int radix)
{
MSVCRT_ulong digit;
char buffer[33], *pos;
size_t len;
if (!str || !size || radix < 2 || radix > 36)
{
if (str && size)
str[0] = '\0';
*MSVCRT__errno() = MSVCRT_EINVAL;
return MSVCRT_EINVAL;
}
pos = buffer + 32;
*pos = '\0';
do
{
digit = value % radix;
value /= radix;
if (digit < 10)
*--pos = '0' + digit;
else
*--pos = 'a' + digit - 10;
}
while (value != 0);
len = buffer + 33 - pos;
if (len > size)
{
size_t i;
char *p = str;
/* Copy the temporary buffer backwards up to the available number of
* characters. */
for (pos = buffer + 31, i = 0; i < size; i++)
*p++ = *pos--;
str[0] = '\0';
*MSVCRT__errno() = MSVCRT_ERANGE;
return MSVCRT_ERANGE;
}
memcpy(str, pos, len);
return 0;
}
/*********************************************************************
* _i64toa_s (MSVCRT.@)
*/
int CDECL _i64toa_s(__int64 value, char *str, MSVCRT_size_t size, int radix)
{
unsigned __int64 val;
unsigned int digit;
int is_negative;
char buffer[65], *pos;
size_t len;
if (!MSVCRT_CHECK_PMT(str != NULL) || !MSVCRT_CHECK_PMT(size > 0) ||
!MSVCRT_CHECK_PMT(radix >= 2) || !MSVCRT_CHECK_PMT(radix <= 36))
{
if (str && size)
str[0] = '\0';
*MSVCRT__errno() = MSVCRT_EINVAL;
return MSVCRT_EINVAL;
}
if (value < 0 && radix == 10)
{
is_negative = 1;
val = -value;
}
else
{
is_negative = 0;
val = value;
}
pos = buffer + 64;
*pos = '\0';
do
{
digit = val % radix;
val /= radix;
if (digit < 10)
*--pos = '0' + digit;
else
*--pos = 'a' + digit - 10;
}
while (val != 0);
if (is_negative)
*--pos = '-';
len = buffer + 65 - pos;
if (len > size)
{
size_t i;
char *p = str;
/* Copy the temporary buffer backwards up to the available number of
* characters. Don't copy the negative sign if present. */
if (is_negative)
{
p++;
size--;
}
for (pos = buffer + 63, i = 0; i < size; i++)
*p++ = *pos--;
str[0] = '\0';
MSVCRT_INVALID_PMT("str[size] is too small");
*MSVCRT__errno() = MSVCRT_ERANGE;
return MSVCRT_ERANGE;
}
memcpy(str, pos, len);
return 0;
}
/*********************************************************************
* _i64tow_s (MSVCRT.@)
*/
int CDECL _i64tow_s(__int64 value, MSVCRT_wchar_t *str, MSVCRT_size_t size, int radix)
{
unsigned __int64 val;
unsigned int digit;
int is_negative;
MSVCRT_wchar_t buffer[65], *pos;
size_t len;
if (!MSVCRT_CHECK_PMT(str != NULL) || !MSVCRT_CHECK_PMT(size > 0) ||
!MSVCRT_CHECK_PMT(radix >= 2) || !MSVCRT_CHECK_PMT(radix <= 36))
{
if (str && size)
str[0] = '\0';
*MSVCRT__errno() = MSVCRT_EINVAL;
return MSVCRT_EINVAL;
}
if (value < 0 && radix == 10)
{
is_negative = 1;
val = -value;
}
else
{
is_negative = 0;
val = value;
}
pos = buffer + 64;
*pos = '\0';
do
{
digit = val % radix;
val /= radix;
if (digit < 10)
*--pos = '0' + digit;
else
*--pos = 'a' + digit - 10;
}
while (val != 0);
if (is_negative)
*--pos = '-';
len = buffer + 65 - pos;
if (len > size)
{
size_t i;
MSVCRT_wchar_t *p = str;
/* Copy the temporary buffer backwards up to the available number of
* characters. Don't copy the negative sign if present. */
if (is_negative)
{
p++;
size--;
}
for (pos = buffer + 63, i = 0; i < size; i++)
*p++ = *pos--;
MSVCRT_INVALID_PMT("str[size] is too small");
str[0] = '\0';
*MSVCRT__errno() = MSVCRT_ERANGE;
return MSVCRT_ERANGE;
}
memcpy(str, pos, len * sizeof(MSVCRT_wchar_t));
return 0;
}
#define I10_OUTPUT_MAX_PREC 21
/* Internal structure used by $I10_OUTPUT */
struct _I10_OUTPUT_DATA {
short pos;
char sign;
BYTE len;
char str[I10_OUTPUT_MAX_PREC+1]; /* add space for '\0' */
};
/*********************************************************************
* $I10_OUTPUT (MSVCRT.@)
* ld - long double to be printed to data
* prec - precision of part, we're interested in
* flag - 0 for first prec digits, 1 for fractional part
* data - data to be populated
*
* return value
* 0 if given double is NaN or INF
* 1 otherwise
*
* FIXME
* Native sets last byte of data->str to '0' or '9', I don't know what
* it means. Current implementation sets it always to '0'.
*/
int CDECL MSVCRT_I10_OUTPUT(MSVCRT__LDOUBLE ld, int prec, int flag, struct _I10_OUTPUT_DATA *data)
{
static const char inf_str[] = "1#INF";
static const char nan_str[] = "1#QNAN";
double d = ld.x;
char format[8];
char buf[I10_OUTPUT_MAX_PREC+9]; /* 9 = strlen("0.e+0000") + '\0' */
char *p;
TRACE("(%lf %d %x %p)\n", d, prec, flag, data);
if(d<0) {
data->sign = '-';
d = -d;
} else
data->sign = ' ';
if(isinf(d)) {
data->pos = 1;
data->len = 5;
memcpy(data->str, inf_str, sizeof(inf_str));
return 0;
}
if(isnan(d)) {
data->pos = 1;
data->len = 6;
memcpy(data->str, nan_str, sizeof(nan_str));
return 0;
}
if(flag&1) {
int exp = 1+floor(log10(d));
prec += exp;
if(exp < 0)
prec--;
}
prec--;
if(prec+1 > I10_OUTPUT_MAX_PREC)
prec = I10_OUTPUT_MAX_PREC-1;
else if(prec < 0) {
d = 0.0;
prec = 0;
}
sprintf(format, "%%.%dle", prec);
sprintf(buf, format, d);
buf[1] = buf[0];
data->pos = atoi(buf+prec+3);
if(buf[1] != '0')
data->pos++;
for(p = buf+prec+1; p>buf+1 && *p=='0'; p--);
data->len = p-buf;
memcpy(data->str, buf+1, data->len);
data->str[data->len] = '\0';
if(buf[1]!='0' && prec-data->len+1>0)
memcpy(data->str+data->len+1, buf+data->len+1, prec-data->len+1);
return 1;
}
#undef I10_OUTPUT_MAX_PREC
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