434 lines
11 KiB
C
434 lines
11 KiB
C
/*
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* NTDLL string functions
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*
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* Copyright 2000 Alexandre Julliard
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* Copyright 2000 Jon Griffiths
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* Copyright 2003 Thomas Mertes
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*/
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#include "config.h"
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#include <ctype.h>
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#include <stdarg.h>
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#include <string.h>
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#include "ntstatus.h"
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#include "windef.h"
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#include "winbase.h"
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#include "winreg.h"
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#include "winternl.h"
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/*********************************************************************
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* _memicmp (NTDLL.@)
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*
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* Compare two blocks of memory as strings, ignoring case.
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*
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* PARAMS
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* s1 [I] First string to compare to s2
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* s2 [I] Second string to compare to s1
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* len [I] Number of bytes to compare
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*
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* RETURNS
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* An integer less than, equal to, or greater than zero indicating that
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* s1 is less than, equal to or greater than s2 respectively.
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*
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* NOTES
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* Any Nul characters in s1 or s2 are ignored. This function always
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* compares up to len bytes or the first place where s1 and s2 differ.
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*/
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INT __cdecl NTDLL__memicmp( LPCSTR s1, LPCSTR s2, DWORD len )
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{
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int ret = 0;
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while (len--)
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{
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if ((ret = tolower(*s1) - tolower(*s2))) break;
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s1++;
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s2++;
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}
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return ret;
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}
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/*********************************************************************
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* _strupr (NTDLL.@)
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*
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* Convert a string to upper case.
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*
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* PARAMS
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* str [I/O] String to convert
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*
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* RETURNS
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* str. There is no error return, if str is NULL or invalid, this
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* function will crash.
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*/
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LPSTR __cdecl _strupr( LPSTR str )
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{
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LPSTR ret = str;
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for ( ; *str; str++) *str = toupper(*str);
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return ret;
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}
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/*********************************************************************
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* _strlwr (NTDLL.@)
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*
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* Convert a string to lowercase
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*
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* PARAMS
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* str [I/O] String to convert
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*
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* RETURNS
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* str. There is no error return, if str is NULL or invalid, this
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* function will crash.
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*/
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LPSTR __cdecl _strlwr( LPSTR str )
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{
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LPSTR ret = str;
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for ( ; *str; str++) *str = tolower(*str);
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return ret;
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}
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/*********************************************************************
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* _ultoa (NTDLL.@)
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*
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* Convert an unsigned long integer to a string.
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*
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* RETURNS
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* str.
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*
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* NOTES
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* - Converts value to a Nul terminated string which is copied to str.
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* - The maximum length of the copied str is 33 bytes.
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* - Does not check if radix is in the range of 2 to 36.
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* - If str is NULL it crashes, as the native function does.
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*/
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char * __cdecl _ultoa(
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unsigned long value, /* [I] Value to be converted */
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char *str, /* [O] Destination for the converted value */
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int radix) /* [I] Number base for conversion */
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{
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char buffer[33];
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char *pos;
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int digit;
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pos = &buffer[32];
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*pos = '\0';
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do {
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digit = value % radix;
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value = value / radix;
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if (digit < 10) {
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*--pos = '0' + digit;
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} else {
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*--pos = 'a' + digit - 10;
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} /* if */
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} while (value != 0L);
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memcpy(str, pos, &buffer[32] - pos + 1);
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return str;
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}
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/*********************************************************************
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* _ltoa (NTDLL.@)
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*
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* Convert a long integer to a string.
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*
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* RETURNS
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* str.
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*
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* NOTES
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* - Converts value to a Nul terminated string which is copied to str.
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* - The maximum length of the copied str is 33 bytes. If radix
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* is 10 and value is negative, the value is converted with sign.
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* - Does not check if radix is in the range of 2 to 36.
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* - If str is NULL it crashes, as the native function does.
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*/
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char * __cdecl _ltoa(
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long value, /* [I] Value to be converted */
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char *str, /* [O] Destination for the converted value */
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int radix) /* [I] Number base for conversion */
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{
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unsigned long val;
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int negative;
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char buffer[33];
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char *pos;
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int digit;
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if (value < 0 && radix == 10) {
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negative = 1;
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val = -value;
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} else {
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negative = 0;
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val = value;
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} /* if */
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pos = &buffer[32];
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*pos = '\0';
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do {
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digit = val % radix;
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val = val / radix;
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if (digit < 10) {
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*--pos = '0' + digit;
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} else {
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*--pos = 'a' + digit - 10;
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} /* if */
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} while (val != 0L);
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if (negative) {
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*--pos = '-';
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} /* if */
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memcpy(str, pos, &buffer[32] - pos + 1);
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return str;
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}
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/*********************************************************************
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* _itoa (NTDLL.@)
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*
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* Converts an integer to a string.
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*
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* RETURNS
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* str.
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*
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* NOTES
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* - Converts value to a '\0' terminated string which is copied to str.
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* - The maximum length of the copied str is 33 bytes. If radix
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* is 10 and value is negative, the value is converted with sign.
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* - Does not check if radix is in the range of 2 to 36.
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* - If str is NULL it crashes, as the native function does.
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*/
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char * __cdecl _itoa(
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int value, /* [I] Value to be converted */
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char *str, /* [O] Destination for the converted value */
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int radix) /* [I] Number base for conversion */
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{
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return _ltoa(value, str, radix);
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}
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/*********************************************************************
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* _ui64toa (NTDLL.@)
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*
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* Converts a large unsigned integer to a string.
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*
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* RETURNS
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* str.
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*
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* NOTES
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* - Converts value to a '\0' terminated string which is copied to str.
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* - The maximum length of the copied str is 65 bytes.
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* - Does not check if radix is in the range of 2 to 36.
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* - If str is NULL it crashes, as the native function does.
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*/
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char * __cdecl _ui64toa(
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ULONGLONG value, /* [I] Value to be converted */
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char *str, /* [O] Destination for the converted value */
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int radix) /* [I] Number base for conversion */
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{
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char buffer[65];
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char *pos;
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int digit;
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pos = &buffer[64];
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*pos = '\0';
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do {
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digit = value % radix;
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value = value / radix;
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if (digit < 10) {
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*--pos = '0' + digit;
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} else {
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*--pos = 'a' + digit - 10;
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} /* if */
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} while (value != 0L);
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memcpy(str, pos, &buffer[64] - pos + 1);
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return str;
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}
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/*********************************************************************
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* _i64toa (NTDLL.@)
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*
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* Converts a large integer to a string.
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*
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* RETURNS
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* str.
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*
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* NOTES
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* - Converts value to a Nul terminated string which is copied to str.
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* - The maximum length of the copied str is 65 bytes. If radix
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* is 10 and value is negative, the value is converted with sign.
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* - Does not check if radix is in the range of 2 to 36.
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* - If str is NULL it crashes, as the native function does.
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*
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* DIFFERENCES
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* - The native DLL converts negative values (for base 10) wrong:
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*| -1 is converted to -18446744073709551615
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*| -2 is converted to -18446744073709551614
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*| -9223372036854775807 is converted to -9223372036854775809
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*| -9223372036854775808 is converted to -9223372036854775808
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* The native msvcrt _i64toa function and our ntdll _i64toa function
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* do not have this bug.
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*/
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char * __cdecl _i64toa(
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LONGLONG value, /* [I] Value to be converted */
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char *str, /* [O] Destination for the converted value */
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int radix) /* [I] Number base for conversion */
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{
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ULONGLONG val;
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int negative;
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char buffer[65];
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char *pos;
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int digit;
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if (value < 0 && radix == 10) {
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negative = 1;
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val = -value;
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} else {
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negative = 0;
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val = value;
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} /* if */
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pos = &buffer[64];
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*pos = '\0';
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do {
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digit = val % radix;
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val = val / radix;
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if (digit < 10) {
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*--pos = '0' + digit;
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} else {
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*--pos = 'a' + digit - 10;
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} /* if */
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} while (val != 0L);
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if (negative) {
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*--pos = '-';
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} /* if */
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memcpy(str, pos, &buffer[64] - pos + 1);
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return str;
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}
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/*********************************************************************
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* _atoi64 (NTDLL.@)
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*
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* Convert a string to a large integer.
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*
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* PARAMS
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* str [I] String to be converted
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*
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* RETURNS
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* Success: The integer value represented by str.
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* Failure: 0. Note that this cannot be distinguished from a successful
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* return, if the string contains "0".
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*
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* NOTES
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* - Accepts: {whitespace} [+|-] {digits}
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* - No check is made for value overflow, only the lower 64 bits are assigned.
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* - If str is NULL it crashes, as the native function does.
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*/
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LONGLONG __cdecl _atoi64( char *str )
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{
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ULONGLONG RunningTotal = 0;
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char bMinus = 0;
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while (*str == ' ' || (*str >= '\011' && *str <= '\015')) {
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str++;
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} /* while */
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if (*str == '+') {
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str++;
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} else if (*str == '-') {
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bMinus = 1;
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str++;
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} /* if */
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while (*str >= '0' && *str <= '9') {
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RunningTotal = RunningTotal * 10 + *str - '0';
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str++;
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} /* while */
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return bMinus ? -RunningTotal : RunningTotal;
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}
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/*********************************************************************
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* _splitpath (NTDLL.@)
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*
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* Split a path into its component pieces.
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*
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* PARAMS
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* inpath [I] Path to split
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* drv [O] Destination for drive component (e.g. "A:"). Must be at least 3 characters.
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* dir [O] Destination for directory component. Should be at least MAX_PATH characters.
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* fname [O] Destination for File name component. Should be at least MAX_PATH characters.
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* ext [O] Destination for file extension component. Should be at least MAX_PATH characters.
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*/
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void __cdecl _splitpath(const char* inpath, char * drv, char * dir,
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char* fname, char * ext )
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{
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const char *p, *end;
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if (inpath[0] && inpath[1] == ':')
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{
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if (drv)
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{
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drv[0] = inpath[0];
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drv[1] = inpath[1];
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drv[2] = 0;
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}
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inpath += 2;
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}
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else if (drv) drv[0] = 0;
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/* look for end of directory part */
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end = NULL;
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for (p = inpath; *p; p++) if (*p == '/' || *p == '\\') end = p + 1;
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if (end) /* got a directory */
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{
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if (dir)
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{
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memcpy( dir, inpath, end - inpath );
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dir[end - inpath] = 0;
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}
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inpath = end;
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}
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else if (dir) dir[0] = 0;
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/* look for extension: what's after the last dot */
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end = NULL;
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for (p = inpath; *p; p++) if (*p == '.') end = p;
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if (!end) end = p; /* there's no extension */
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if (fname)
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{
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memcpy( fname, inpath, end - inpath );
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fname[end - inpath] = 0;
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}
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if (ext) strcpy( ext, end );
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}
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