rtlstr.c 63.6 KB
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/*
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 * Rtl string functions
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 *
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 * Copyright (C) 1996-1998 Marcus Meissner
 * Copyright (C) 2000      Alexandre Julliard
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 * Copyright (C) 2003      Thomas Mertes
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 *
 * 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
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 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
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 */

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#include "config.h"

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#include <assert.h>
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#include <stdarg.h>
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#include <stdlib.h>
#include <string.h>
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#include "ntstatus.h"
#define WIN32_NO_STATUS
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#include "windef.h"
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#include "winnt.h"
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#include "winternl.h"
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#include "wine/unicode.h"
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#include "wine/debug.h"
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#include "ntdll_misc.h"
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WINE_DEFAULT_DEBUG_CHANNEL(ntdll);
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#define GUID_STRING_LENGTH    38

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UINT NlsAnsiCodePage = 0;
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BYTE NlsMbCodePageTag = 0;
BYTE NlsMbOemCodePageTag = 0;

static const union cptable *ansi_table;
static const union cptable *oem_table;
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static const union cptable* unix_table; /* NULL if UTF8 */

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/**************************************************************************
 *	__wine_init_codepages   (NTDLL.@)
 *
 * Set the code page once kernel32 is loaded. Should be done differently.
 */
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void __wine_init_codepages( const union cptable *ansi, const union cptable *oem,
                            const union cptable *ucp)
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{
    ansi_table = ansi;
    oem_table = oem;
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    unix_table = ucp;
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    NlsAnsiCodePage = ansi->info.codepage;
}

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int ntdll_umbstowcs(DWORD flags, const char* src, int srclen, WCHAR* dst, int dstlen)
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{
#ifdef __APPLE__
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    /* work around broken Mac OS X filesystem that enforces decomposed Unicode */
    if (!unix_table) flags |= MB_COMPOSITE;
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#endif
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    return (unix_table) ?
        wine_cp_mbstowcs( unix_table, flags, src, srclen, dst, dstlen ) :
        wine_utf8_mbstowcs( flags, src, srclen, dst, dstlen );
}

int ntdll_wcstoumbs(DWORD flags, const WCHAR* src, int srclen, char* dst, int dstlen,
                    const char* defchar, int *used )
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{
    if (unix_table)
        return wine_cp_wcstombs( unix_table, flags, src, srclen, dst, dstlen, defchar, used );
    if (used) *used = 0;  /* all chars are valid for UTF-8 */
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    return wine_utf8_wcstombs( flags, src, srclen, dst, dstlen );
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}
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/**************************************************************************
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 *      RtlInitAnsiString   (NTDLL.@)
 *
 * Initializes a buffered ansi string.
 *
 * RETURNS
 *  Nothing.
 *
 * NOTES
 *  Assigns source to target->Buffer. The length of source is assigned to
 *  target->Length and target->MaximumLength. If source is NULL the length
 *  of source is assumed to be 0.
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 */
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void WINAPI RtlInitAnsiString(
    PANSI_STRING target, /* [I/O] Buffered ansi string to be initialized */
    PCSZ source)         /* [I]   '\0' terminated string used to initialize target */
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{
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    if ((target->Buffer = (PCHAR) source))
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    {
        target->Length = strlen(source);
        target->MaximumLength = target->Length + 1;
    }
    else target->Length = target->MaximumLength = 0;
}

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/**************************************************************************
 *      RtlInitAnsiStringEx   (NTDLL.@)
 *
 * Initializes a buffered ansi string.
 *
 * RETURNS
 *  An appropriate NTSTATUS value.
 *
 * NOTES
 *  Assigns source to target->Buffer. The length of source is assigned to
 *  target->Length and target->MaximumLength. If source is NULL the length
 *  of source is assumed to be 0.
 */
NTSTATUS WINAPI RtlInitAnsiStringEx(PANSI_STRING target, PCSZ source)
{
    if (source)
    {
        unsigned int len = strlen(source);
        if (len+1 > 0xffff)
            return STATUS_NAME_TOO_LONG;

        target->Buffer = (PCHAR) source;
        target->Length = len;
        target->MaximumLength = len + 1;
    }
    else
    {
        target->Buffer = NULL;
        target->Length = 0;
        target->MaximumLength = 0;
    }
    return STATUS_SUCCESS;
}
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/**************************************************************************
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 *      RtlInitString   (NTDLL.@)
 *
 * Initializes a buffered string.
 *
 * RETURNS
 *  Nothing.
 *
 * NOTES
 *  Assigns source to target->Buffer. The length of source is assigned to
 *  target->Length and target->MaximumLength. If source is NULL the length
 *  of source is assumed to be 0.
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 */
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void WINAPI RtlInitString(
    PSTRING target, /* [I/O] Buffered string to be initialized */
    PCSZ source)    /* [I]   '\0' terminated string used to initialize target */
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{
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    RtlInitAnsiString( target, source );
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}


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/**************************************************************************
 *	RtlFreeAnsiString   (NTDLL.@)
 */
void WINAPI RtlFreeAnsiString( PSTRING str )
{
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    if (str->Buffer)
    {
        RtlFreeHeap( GetProcessHeap(), 0, str->Buffer );
        RtlZeroMemory( str, sizeof(*str) );
    }
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}
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/**************************************************************************
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 *	RtlFreeOemString   (NTDLL.@)
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 */
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void WINAPI RtlFreeOemString( PSTRING str )
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{
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    RtlFreeAnsiString( str );
}

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/**************************************************************************
 *	RtlCopyString   (NTDLL.@)
 */
void WINAPI RtlCopyString( STRING *dst, const STRING *src )
{
    if (src)
    {
        unsigned int len = min( src->Length, dst->MaximumLength );
        memcpy( dst->Buffer, src->Buffer, len );
        dst->Length = len;
    }
    else dst->Length = 0;
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}

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/**************************************************************************
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 *      RtlInitUnicodeString   (NTDLL.@)
 *
 * Initializes a buffered unicode string.
 *
 * RETURNS
 *  Nothing.
 *
 * NOTES
 *  Assigns source to target->Buffer. The length of source is assigned to
 *  target->Length and target->MaximumLength. If source is NULL the length
 *  of source is assumed to be 0.
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 */
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void WINAPI RtlInitUnicodeString(
    PUNICODE_STRING target, /* [I/O] Buffered unicode string to be initialized */
    PCWSTR source)          /* [I]   '\0' terminated unicode string used to initialize target */
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{
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    if ((target->Buffer = (PWSTR) source))
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    {
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        unsigned int length = strlenW(source) * sizeof(WCHAR);
        if (length > 0xfffc)
            length = 0xfffc;
        target->Length = length;
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        target->MaximumLength = target->Length + sizeof(WCHAR);
    }
    else target->Length = target->MaximumLength = 0;
}

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/**************************************************************************
 *      RtlInitUnicodeStringEx   (NTDLL.@)
 *
 * Initializes a buffered unicode string.
 *
 * RETURNS
 *  Success: STATUS_SUCCESS. target is initialized.
 *  Failure: STATUS_NAME_TOO_LONG, if the source string is larger than 65532 bytes.
 *
 * NOTES
 *  Assigns source to target->Buffer. The length of source is assigned to
 *  target->Length and target->MaximumLength. If source is NULL the length
 *  of source is assumed to be 0.
 */
NTSTATUS WINAPI RtlInitUnicodeStringEx(
    PUNICODE_STRING target, /* [I/O] Buffered unicode string to be initialized */
    PCWSTR source)          /* [I]   '\0' terminated unicode string used to initialize target */
{
    if (source != NULL) {
        unsigned int len = strlenW(source) * sizeof(WCHAR);

        if (len > 0xFFFC) {
            return STATUS_NAME_TOO_LONG;
        } else {
            target->Length = len;
            target->MaximumLength = len + sizeof(WCHAR);
            target->Buffer = (PWSTR) source;
        } /* if */
    } else {
        target->Length = 0;
        target->MaximumLength = 0;
        target->Buffer = NULL;
    } /* if */
    return STATUS_SUCCESS;
}


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/**************************************************************************
 *	RtlCreateUnicodeString   (NTDLL.@)
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 *
 * Creates a UNICODE_STRING from a null-terminated Unicode string.
 *
 * RETURNS
 *     Success: TRUE
 *     Failure: FALSE
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 */
BOOLEAN WINAPI RtlCreateUnicodeString( PUNICODE_STRING target, LPCWSTR src )
{
    int len = (strlenW(src) + 1) * sizeof(WCHAR);
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    if (!(target->Buffer = RtlAllocateHeap( GetProcessHeap(), 0, len ))) return FALSE;
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    memcpy( target->Buffer, src, len );
    target->MaximumLength = len;
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    target->Length = len - sizeof(WCHAR);
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    return TRUE;
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}


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/**************************************************************************
 *	RtlCreateUnicodeStringFromAsciiz   (NTDLL.@)
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 *
 * Creates a UNICODE_STRING from a null-terminated Ascii string.
 *
 * RETURNS
 *     Success: TRUE
 *     Failure: FALSE
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 */
BOOLEAN WINAPI RtlCreateUnicodeStringFromAsciiz( PUNICODE_STRING target, LPCSTR src )
{
    STRING ansi;
    RtlInitAnsiString( &ansi, src );
    return !RtlAnsiStringToUnicodeString( target, &ansi, TRUE );
}
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/**************************************************************************
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 *	RtlFreeUnicodeString   (NTDLL.@)
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 *
 * Frees a UNICODE_STRING created with RtlCreateUnicodeString() or 
 * RtlCreateUnicodeStringFromAsciiz().
 *
 * RETURNS
 *     nothing
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 */
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void WINAPI RtlFreeUnicodeString( PUNICODE_STRING str )
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{
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    if (str->Buffer)
    {
        RtlFreeHeap( GetProcessHeap(), 0, str->Buffer );
        RtlZeroMemory( str, sizeof(*str) );
    }
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}
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/**************************************************************************
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 *	RtlCopyUnicodeString   (NTDLL.@)
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 *
 * Copies from one UNICODE_STRING to another.
 *
 * RETURNS
 *     nothing
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 */
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void WINAPI RtlCopyUnicodeString( UNICODE_STRING *dst, const UNICODE_STRING *src )
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{
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    if (src)
    {
        unsigned int len = min( src->Length, dst->MaximumLength );
        memcpy( dst->Buffer, src->Buffer, len );
        dst->Length = len;
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        /* append terminating '\0' if enough space */
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        if (len < dst->MaximumLength) dst->Buffer[len / sizeof(WCHAR)] = 0;
    }
    else dst->Length = 0;
}

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/**************************************************************************
 *      RtlDuplicateUnicodeString   (NTDLL.@)
 *
 * Duplicates an unicode string.
 *
 * RETURNS
 *  Success: STATUS_SUCCESS. destination contains the duplicated unicode string.
 *  Failure: STATUS_INVALID_PARAMETER, if one of the parameters is illegal.
 *           STATUS_NO_MEMORY, if the allocation fails.
 *
 * NOTES
 *  For add_nul there are several possible values:
 *  0 = destination will not be '\0' terminated,
 *  1 = destination will be '\0' terminated,
 *  3 = like 1 but for an empty source string produce '\0' terminated empty
 *     Buffer instead of assigning NULL to the Buffer.
 *  Other add_nul values are invalid.
 */
NTSTATUS WINAPI RtlDuplicateUnicodeString(
    int add_nul,                  /* [I] flag */
    const UNICODE_STRING *source, /* [I] Unicode string to be duplicated */
    UNICODE_STRING *destination)  /* [O] destination for the duplicated unicode string */
{
    if (source == NULL || destination == NULL ||
        source->Length > source->MaximumLength ||
        (source->Length == 0 && source->MaximumLength > 0 && source->Buffer == NULL) ||
        add_nul == 2 || add_nul >= 4 || add_nul < 0) {
        return STATUS_INVALID_PARAMETER;
    } else {
        if (source->Length == 0 && add_nul != 3) {
            destination->Length = 0;
            destination->MaximumLength = 0;
            destination->Buffer = NULL;
        } else {
            unsigned int destination_max_len = source->Length;

            if (add_nul) {
                destination_max_len += sizeof(WCHAR);
            } /* if */
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            destination->Buffer = RtlAllocateHeap(GetProcessHeap(), 0, destination_max_len);
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            if (destination->Buffer == NULL) {
                return STATUS_NO_MEMORY;
            } else {
                memcpy(destination->Buffer, source->Buffer, source->Length);
                destination->Length = source->Length;
                destination->MaximumLength = source->Length;
                /* append terminating '\0' if enough space */
                if (add_nul) {
                    destination->MaximumLength = destination_max_len;
                    destination->Buffer[destination->Length / sizeof(WCHAR)] = 0;
                } /* if */
            } /* if */
        } /* if */
    } /* if */
    return STATUS_SUCCESS;
}


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/**************************************************************************
 *	RtlEraseUnicodeString   (NTDLL.@)
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 *
 * Overwrites a UNICODE_STRING with zeros.
 *
 * RETURNS
 *     nothing
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 */
void WINAPI RtlEraseUnicodeString( UNICODE_STRING *str )
{
    if (str->Buffer)
    {
        memset( str->Buffer, 0, str->MaximumLength );
        str->Length = 0;
    }
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}

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/*
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    COMPARISON FUNCTIONS
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*/

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/******************************************************************************
 *	RtlCompareString   (NTDLL.@)
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 */
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LONG WINAPI RtlCompareString( const STRING *s1, const STRING *s2, BOOLEAN CaseInsensitive )
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{
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    unsigned int len;
    LONG ret = 0;
    LPCSTR p1, p2;

    len = min(s1->Length, s2->Length);
    p1 = s1->Buffer;
    p2 = s2->Buffer;

    if (CaseInsensitive)
    {
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        while (!ret && len--) ret = RtlUpperChar(*p1++) - RtlUpperChar(*p2++);
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    }
    else
    {
        while (!ret && len--) ret = *p1++ - *p2++;
    }
    if (!ret) ret = s1->Length - s2->Length;
    return ret;
}
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/******************************************************************************
 *	RtlCompareUnicodeString   (NTDLL.@)
 */
LONG WINAPI RtlCompareUnicodeString( const UNICODE_STRING *s1, const UNICODE_STRING *s2,
                                     BOOLEAN CaseInsensitive )
{
    unsigned int len;
    LONG ret = 0;
    LPCWSTR p1, p2;

    len = min(s1->Length, s2->Length) / sizeof(WCHAR);
    p1 = s1->Buffer;
    p2 = s2->Buffer;

    if (CaseInsensitive)
    {
        while (!ret && len--) ret = toupperW(*p1++) - toupperW(*p2++);
    }
    else
    {
        while (!ret && len--) ret = *p1++ - *p2++;
    }
    if (!ret) ret = s1->Length - s2->Length;
    return ret;
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}

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/**************************************************************************
 *	RtlEqualString   (NTDLL.@)
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 *
 * Determine if two strings are equal.
 *
 * PARAMS
 *  s1              [I] Source string
 *  s2              [I] String to compare to s1
 *  CaseInsensitive [I] TRUE = Case insensitive, FALSE = Case sensitive
 *
 * RETURNS
 *  Non-zero if s1 is equal to s2, 0 otherwise.
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 */
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BOOLEAN WINAPI RtlEqualString( const STRING *s1, const STRING *s2, BOOLEAN CaseInsensitive )
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{
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    if (s1->Length != s2->Length) return FALSE;
    return !RtlCompareString( s1, s2, CaseInsensitive );
}
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/**************************************************************************
 *	RtlEqualUnicodeString   (NTDLL.@)
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 *
 * Unicode version of RtlEqualString.
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 */
BOOLEAN WINAPI RtlEqualUnicodeString( const UNICODE_STRING *s1, const UNICODE_STRING *s2,
                                      BOOLEAN CaseInsensitive )
{
    if (s1->Length != s2->Length) return FALSE;
    return !RtlCompareUnicodeString( s1, s2, CaseInsensitive );
}

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/**************************************************************************
 *	RtlPrefixString   (NTDLL.@)
 *
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 * Determine if one string is a prefix of another.
 *
 * PARAMS
 *  s1          [I] Prefix to look for in s2
 *  s2          [I] String that may contain s1 as a prefix
 *  ignore_case [I] TRUE = Case insensitive, FALSE = Case sensitive
 *
 * RETURNS
 *  TRUE if s2 contains s1 as a prefix, FALSE otherwise.
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 */
BOOLEAN WINAPI RtlPrefixString( const STRING *s1, const STRING *s2, BOOLEAN ignore_case )
{
    unsigned int i;

    if (s1->Length > s2->Length) return FALSE;
    if (ignore_case)
    {
        for (i = 0; i < s1->Length; i++)
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            if (RtlUpperChar(s1->Buffer[i]) != RtlUpperChar(s2->Buffer[i])) return FALSE;
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    }
    else
    {
        for (i = 0; i < s1->Length; i++)
            if (s1->Buffer[i] != s2->Buffer[i]) return FALSE;
    }
    return TRUE;
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}

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/**************************************************************************
 *	RtlPrefixUnicodeString   (NTDLL.@)
 *
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 * Unicode version of RtlPrefixString.
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 */
BOOLEAN WINAPI RtlPrefixUnicodeString( const UNICODE_STRING *s1,
                                       const UNICODE_STRING *s2,
                                       BOOLEAN ignore_case )
{
    unsigned int i;

    if (s1->Length > s2->Length) return FALSE;
    if (ignore_case)
    {
        for (i = 0; i < s1->Length / sizeof(WCHAR); i++)
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            if (toupperW(s1->Buffer[i]) != toupperW(s2->Buffer[i])) return FALSE;
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    }
    else
    {
        for (i = 0; i < s1->Length / sizeof(WCHAR); i++)
            if (s1->Buffer[i] != s2->Buffer[i]) return FALSE;
    }
    return TRUE;
}


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/**************************************************************************
 *	RtlEqualComputerName   (NTDLL.@)
 *
 * Determine if two computer names are the same.
 *
 * PARAMS
 *  left  [I] First computer name
 *  right [I] Second computer name
 *
 * RETURNS
 *  0 if the names are equal, non-zero otherwise.
 *
 * NOTES
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 *  The comparison is case insensitive.
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 */
NTSTATUS WINAPI RtlEqualComputerName(const UNICODE_STRING *left,
                                     const UNICODE_STRING *right)
{
    NTSTATUS ret;
    STRING upLeft, upRight;

    if (!(ret = RtlUpcaseUnicodeStringToOemString( &upLeft, left, TRUE )))
    {
       if (!(ret = RtlUpcaseUnicodeStringToOemString( &upRight, right, TRUE )))
       {
         ret = RtlEqualString( &upLeft, &upRight, FALSE );
         RtlFreeOemString( &upRight );
       }
       RtlFreeOemString( &upLeft );
    }
    return ret;
}

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/**************************************************************************
 *	RtlEqualDomainName   (NTDLL.@)
 *
 * Determine if two domain names are the same.
 *
 * PARAMS
 *  left  [I] First domain name
 *  right [I] Second domain name
 *
 * RETURNS
 *  0 if the names are equal, non-zero otherwise.
 *
 * NOTES
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 *  The comparison is case insensitive.
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 */
NTSTATUS WINAPI RtlEqualDomainName(const UNICODE_STRING *left,
                                   const UNICODE_STRING *right)
{
    return RtlEqualComputerName(left, right);
}

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/**************************************************************************
 *      RtlAnsiCharToUnicodeChar   (NTDLL.@)
 *
 * Converts the first ansi character to a unicode character.
 *
 * PARAMS
 *  ansi [I/O] Pointer to the ansi string.
 *
 * RETURNS
 *  Unicode representation of the first character in the ansi string.
 *
 * NOTES
 *  Upon successful completion, the char pointer ansi points to is
 *  incremented by the size of the character.
 */
WCHAR WINAPI RtlAnsiCharToUnicodeChar(LPSTR *ansi)
{
    WCHAR str;
    DWORD charSize = sizeof(CHAR);

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    if (wine_is_dbcs_leadbyte(ansi_table, **ansi))
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        charSize++;

    RtlMultiByteToUnicodeN(&str, sizeof(WCHAR), NULL, *ansi, charSize);
    *ansi += charSize;

    return str;
}

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/*
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        COPY BETWEEN ANSI_STRING or UNICODE_STRING
        there is no parameter checking, it just crashes
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*/

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/**************************************************************************
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 *      RtlAnsiStringToUnicodeString   (NTDLL.@)
 *
 * Converts an ansi string to an unicode string.
 *
 * RETURNS
 *  Success: STATUS_SUCCESS. uni contains the converted string
 *  Failure: STATUS_BUFFER_OVERFLOW, if doalloc is FALSE and ansi is too small.
 *           STATUS_NO_MEMORY, if doalloc is TRUE and the allocation fails.
 *           STATUS_INVALID_PARAMETER_2, if the unicode string would be larger than 65535.
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 *
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 * NOTES
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 *  This function always writes a terminating '\0'.
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 */
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NTSTATUS WINAPI RtlAnsiStringToUnicodeString(
    PUNICODE_STRING uni, /* [I/O] Destination for the unicode string */
    PCANSI_STRING ansi,  /* [I]   Ansi string to be converted */
    BOOLEAN doalloc)     /* [I]   TRUE=Allocate new buffer for uni, FALSE=Use existing buffer */
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{
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    DWORD total = RtlAnsiStringToUnicodeSize( ansi );
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    if (total > 0xffff) return STATUS_INVALID_PARAMETER_2;
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    uni->Length = total - sizeof(WCHAR);
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    if (doalloc)
    {
        uni->MaximumLength = total;
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        if (!(uni->Buffer = RtlAllocateHeap( GetProcessHeap(), 0, total )))
690
            return STATUS_NO_MEMORY;
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    }
    else if (total > uni->MaximumLength) return STATUS_BUFFER_OVERFLOW;

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    RtlMultiByteToUnicodeN( uni->Buffer, uni->Length, NULL, ansi->Buffer, ansi->Length );
    uni->Buffer[uni->Length / sizeof(WCHAR)] = 0;
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    return STATUS_SUCCESS;
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}
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/**************************************************************************
701
 *	RtlOemStringToUnicodeString   (NTDLL.@)
702
 *
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 * Converts an oem string to an unicode string.
 *
 * RETURNS
 *  Success: STATUS_SUCCESS. uni contains the converted string
 *  Failure: STATUS_BUFFER_OVERFLOW, if doalloc is FALSE and oem is too small.
 *           STATUS_NO_MEMORY, if doalloc is TRUE and the allocation fails.
 *           STATUS_INVALID_PARAMETER_2, if the unicode string would be larger than 65535.
 *
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 * NOTES
712
 *  This function always writes a terminating '\0'.
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 */
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NTSTATUS WINAPI RtlOemStringToUnicodeString(
    UNICODE_STRING *uni, /* [I/O] Destination for the unicode string */
    const STRING *oem,   /* [I]   Oem string to be converted */
    BOOLEAN doalloc)     /* [I]   TRUE=Allocate new buffer for uni, FALSE=Use existing buffer */
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{
719
    DWORD total = RtlOemStringToUnicodeSize( oem );
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    if (total > 0xffff) return STATUS_INVALID_PARAMETER_2;
722
    uni->Length = total - sizeof(WCHAR);
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    if (doalloc)
    {
        uni->MaximumLength = total;
726
        if (!(uni->Buffer = RtlAllocateHeap( GetProcessHeap(), 0, total )))
727
            return STATUS_NO_MEMORY;
728 729 730
    }
    else if (total > uni->MaximumLength) return STATUS_BUFFER_OVERFLOW;

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    RtlOemToUnicodeN( uni->Buffer, uni->Length, NULL, oem->Buffer, oem->Length );
    uni->Buffer[uni->Length / sizeof(WCHAR)] = 0;
733
    return STATUS_SUCCESS;
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}

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/**************************************************************************
738
 *	RtlUnicodeStringToAnsiString   (NTDLL.@)
739
 *
740
 * Converts an unicode string to an ansi string.
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 *
 * RETURNS
 *  Success: STATUS_SUCCESS. ansi contains the converted string
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 *  Failure: STATUS_BUFFER_OVERFLOW, if doalloc is FALSE and ansi is too small.
 *           STATUS_NO_MEMORY, if doalloc is TRUE and the allocation fails.
746
 *
747
 * NOTES
748 749
 *  This function always writes a terminating '\0'.
 *  It performs a partial copy if ansi is too small.
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 */
751
NTSTATUS WINAPI RtlUnicodeStringToAnsiString(
752
    STRING *ansi,              /* [I/O] Destination for the ansi string */
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    const UNICODE_STRING *uni, /* [I]   Unicode string to be converted */
    BOOLEAN doalloc)           /* [I]   TRUE=Allocate new buffer for ansi, FALSE=Use existing buffer */
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{
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    NTSTATUS ret = STATUS_SUCCESS;
    DWORD len = RtlUnicodeStringToAnsiSize( uni );

759
    ansi->Length = len - 1;
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    if (doalloc)
    {
762
        ansi->MaximumLength = len;
763
        if (!(ansi->Buffer = RtlAllocateHeap( GetProcessHeap(), 0, len )))
764
            return STATUS_NO_MEMORY;
765
    }
766
    else if (ansi->MaximumLength < len)
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    {
        if (!ansi->MaximumLength) return STATUS_BUFFER_OVERFLOW;
        ansi->Length = ansi->MaximumLength - 1;
        ret = STATUS_BUFFER_OVERFLOW;
    }

773
    RtlUnicodeToMultiByteN( ansi->Buffer, ansi->Length, NULL, uni->Buffer, uni->Length );
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    ansi->Buffer[ansi->Length] = 0;
    return ret;
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}

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/**************************************************************************
780
 *	RtlUnicodeStringToOemString   (NTDLL.@)
781
 *
782
 * Converts a Rtl Unicode string to an OEM string.
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 *
 * PARAMS
 *  oem     [O] Destination for OEM string
 *  uni     [I] Source Unicode string
 *  doalloc [I] TRUE=Allocate new buffer for oem,FALSE=Use existing buffer
 *
 * RETURNS
 *  Success: STATUS_SUCCESS. oem contains the converted string
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 *  Failure: STATUS_BUFFER_OVERFLOW, if doalloc is FALSE and oem is too small.
 *           STATUS_NO_MEMORY, if doalloc is TRUE and allocation fails.
793
 *
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 * NOTES
795
 *   If doalloc is TRUE, the length allocated is uni->Length + 1.
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 *   This function always '\0' terminates the string returned.
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 */
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NTSTATUS WINAPI RtlUnicodeStringToOemString( STRING *oem,
                                             const UNICODE_STRING *uni,
                                             BOOLEAN doalloc )
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{
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    NTSTATUS ret = STATUS_SUCCESS;
    DWORD len = RtlUnicodeStringToOemSize( uni );

805
    oem->Length = len - 1;
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    if (doalloc)
    {
808
        oem->MaximumLength = len;
809
        if (!(oem->Buffer = RtlAllocateHeap( GetProcessHeap(), 0, len )))
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            return STATUS_NO_MEMORY;
811
    }
812
    else if (oem->MaximumLength < len)
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    {
        if (!oem->MaximumLength) return STATUS_BUFFER_OVERFLOW;
        oem->Length = oem->MaximumLength - 1;
        ret = STATUS_BUFFER_OVERFLOW;
    }

819
    RtlUnicodeToOemN( oem->Buffer, oem->Length, NULL, uni->Buffer, uni->Length );
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    oem->Buffer[oem->Length] = 0;
    return ret;
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}

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/**************************************************************************
826
 *	RtlMultiByteToUnicodeN   (NTDLL.@)
827
 *
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 * Converts a multi-byte string to a Unicode string.
 *
 * RETURNS
 *  NTSTATUS code
 *
833
 * NOTES
834
 *  Performs a partial copy if dst is too small.
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 */
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NTSTATUS WINAPI RtlMultiByteToUnicodeN( LPWSTR dst, DWORD dstlen, LPDWORD reslen,
                                        LPCSTR src, DWORD srclen )
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{
839

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    int ret = wine_cp_mbstowcs( ansi_table, 0, src, srclen, dst, dstlen/sizeof(WCHAR) );
841
    if (reslen)
842
        *reslen = (ret >= 0) ? ret*sizeof(WCHAR) : dstlen; /* overflow -> we filled up to dstlen */
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    return STATUS_SUCCESS;
}
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847 848
/**************************************************************************
 *	RtlOemToUnicodeN   (NTDLL.@)
849 850 851 852 853
 *
 * Converts a multi-byte string in the OEM code page to a Unicode string.
 *
 * RETURNS
 *  NTSTATUS code
854 855 856 857
 */
NTSTATUS WINAPI RtlOemToUnicodeN( LPWSTR dst, DWORD dstlen, LPDWORD reslen,
                                  LPCSTR src, DWORD srclen )
{
858
    int ret = wine_cp_mbstowcs( oem_table, 0, src, srclen, dst, dstlen/sizeof(WCHAR) );
859
    if (reslen)
860
        *reslen = (ret >= 0) ? ret*sizeof(WCHAR) : dstlen; /* overflow -> we filled up to dstlen */
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    return STATUS_SUCCESS;
}

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/**************************************************************************
 *	RtlUnicodeToMultiByteN   (NTDLL.@)
867 868 869 870 871
 *
 * Converts a Unicode string to a multi-byte string in the ANSI code page.
 *
 * RETURNS
 *  NTSTATUS code
872 873 874 875
 */
NTSTATUS WINAPI RtlUnicodeToMultiByteN( LPSTR dst, DWORD dstlen, LPDWORD reslen,
                                        LPCWSTR src, DWORD srclen )
{
876
    int ret = wine_cp_wcstombs( ansi_table, 0, src, srclen / sizeof(WCHAR),
877
                                dst, dstlen, NULL, NULL );
878
    if (reslen)
879
        *reslen = (ret >= 0) ? ret : dstlen; /* overflow -> we filled up to dstlen */
880
    return STATUS_SUCCESS;
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}

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884
/**************************************************************************
885
 *	RtlUnicodeToOemN   (NTDLL.@)
886 887 888 889 890
 *
 * Converts a Unicode string to a multi-byte string in the OEM code page.
 *
 * RETURNS
 *  NTSTATUS code
891 892 893 894
 */
NTSTATUS WINAPI RtlUnicodeToOemN( LPSTR dst, DWORD dstlen, LPDWORD reslen,
                                  LPCWSTR src, DWORD srclen )
{
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    int ret = wine_cp_wcstombs( oem_table, 0, src, srclen / sizeof(WCHAR),
896
                                dst, dstlen, NULL, NULL );
897
    if (reslen)
898
        *reslen = (ret >= 0) ? ret : dstlen; /* overflow -> we filled up to dstlen */
899
    return STATUS_SUCCESS;
900
}
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902

903
/*
904
     CASE CONVERSIONS
905
*/
906

907 908 909

/**************************************************************************
 *	RtlUpperChar   (NTDLL.@)
910
 *
911
 * Converts an Ascii character to uppercase.
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 *
 * PARAMS
 *  ch [I] Character to convert
 *
 * RETURNS
 *  The uppercase character value.
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 *
 * NOTES
 *  For the input characters from 'a' .. 'z' it returns 'A' .. 'Z'.
 *  All other input characters are returned unchanged. The locale and
 *  multibyte characters are not taken into account (as native DLL).
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 */
CHAR WINAPI RtlUpperChar( CHAR ch )
{
    if (ch >= 'a' && ch <= 'z') {
        return ch - 'a' + 'A';
    } else {
        return ch;
930
    } /* if */
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}


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/**************************************************************************
935
 *	RtlUpperString   (NTDLL.@)
936
 *
937
 * Converts an Ascii string to uppercase.
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 *
 * PARAMS
 *  dst [O] Destination for converted string
 *  src [I] Source string to convert
 *
 * RETURNS
 *  Nothing.
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 *
 * NOTES
 *  For the src characters from 'a' .. 'z' it assigns 'A' .. 'Z' to dst.
 *  All other src characters are copied unchanged to dst. The locale and
 *  multibyte characters are not taken into account (as native DLL).
 *  The number of character copied is the minimum of src->Length and
 *  the dst->MaximumLength.
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 */
953
void WINAPI RtlUpperString( STRING *dst, const STRING *src )
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{
955
    unsigned int i, len = min(src->Length, dst->MaximumLength);
956

957
    for (i = 0; i < len; i++) dst->Buffer[i] = RtlUpperChar(src->Buffer[i]);
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    dst->Length = len;
}
960 961


962 963
/**************************************************************************
 *	RtlUpcaseUnicodeChar   (NTDLL.@)
964
 *
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 * Converts an Unicode character to uppercase.
 *
 * PARAMS
 *  wch [I] Character to convert
 *
 * RETURNS
 *  The uppercase character value.
972 973 974 975 976 977
 */
WCHAR WINAPI RtlUpcaseUnicodeChar( WCHAR wch )
{
    return toupperW(wch);
}

978

979 980 981
/**************************************************************************
 *	RtlDowncaseUnicodeChar   (NTDLL.@)
 *
982
 * Converts an Unicode character to lowercase.
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 *
 * PARAMS
 *  wch [I] Character to convert
 *
 * RETURNS
 *  The lowercase character value.
 */
WCHAR WINAPI RtlDowncaseUnicodeChar(WCHAR wch)
{
    return tolowerW(wch);
}
994

995

996 997 998
/**************************************************************************
 *	RtlUpcaseUnicodeString   (NTDLL.@)
 *
999
 * Converts an Unicode string to uppercase.
1000 1001 1002 1003 1004 1005 1006 1007 1008 1009 1010 1011
 *
 * PARAMS
 *  dest    [O] Destination for converted string
 *  src     [I] Source string to convert
 *  doalloc [I] TRUE=Allocate a buffer for dest if it doesn't have one
 *
 * RETURNS
 *  Success: STATUS_SUCCESS. dest contains the converted string.
 *  Failure: STATUS_NO_MEMORY, if doalloc is TRUE and memory allocation fails, or
 *           STATUS_BUFFER_OVERFLOW, if doalloc is FALSE and dest is too small.
 *
 * NOTES
1012 1013
 *  dest is never '\0' terminated because it may be equal to src, and src
 *  might not be '\0' terminated. dest->Length is only set upon success.
1014 1015 1016
 */
NTSTATUS WINAPI RtlUpcaseUnicodeString( UNICODE_STRING *dest,
                                        const UNICODE_STRING *src,
1017
                                        BOOLEAN doalloc)
1018 1019 1020 1021 1022 1023
{
    DWORD i, len = src->Length;

    if (doalloc)
    {
        dest->MaximumLength = len;
1024
        if (!(dest->Buffer = RtlAllocateHeap( GetProcessHeap(), 0, len )))
1025
            return STATUS_NO_MEMORY;
1026 1027 1028 1029 1030 1031
    }
    else if (len > dest->MaximumLength) return STATUS_BUFFER_OVERFLOW;

    for (i = 0; i < len/sizeof(WCHAR); i++) dest->Buffer[i] = toupperW(src->Buffer[i]);
    dest->Length = len;
    return STATUS_SUCCESS;
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}

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1035 1036 1037 1038 1039 1040 1041 1042 1043 1044 1045 1046 1047 1048 1049 1050
/**************************************************************************
 *	RtlDowncaseUnicodeString   (NTDLL.@)
 *
 * Converts an Unicode string to lowercase.
 *
 * PARAMS
 *  dest    [O] Destination for converted string
 *  src     [I] Source string to convert
 *  doalloc [I] TRUE=Allocate a buffer for dest if it doesn't have one
 *
 * RETURNS
 *  Success: STATUS_SUCCESS. dest contains the converted string.
 *  Failure: STATUS_NO_MEMORY, if doalloc is TRUE and memory allocation fails, or
 *           STATUS_BUFFER_OVERFLOW, if doalloc is FALSE and dest is too small.
 *
 * NOTES
1051 1052
 *  dest is never '\0' terminated because it may be equal to src, and src
 *  might not be '\0' terminated. dest->Length is only set upon success.
1053 1054
 */
NTSTATUS WINAPI RtlDowncaseUnicodeString(
1055 1056 1057
    UNICODE_STRING *dest,
    const UNICODE_STRING *src,
    BOOLEAN doalloc)
1058 1059 1060 1061 1062 1063
{
    DWORD i;
    DWORD len = src->Length;

    if (doalloc) {
        dest->MaximumLength = len;
1064
        if (!(dest->Buffer = RtlAllocateHeap( GetProcessHeap(), 0, len ))) {
1065 1066
            return STATUS_NO_MEMORY;
        } /* if */
1067
    } else if (len > dest->MaximumLength) {
1068
        return STATUS_BUFFER_OVERFLOW;
1069 1070 1071
    } /* if */

    for (i = 0; i < len/sizeof(WCHAR); i++) {
1072
        dest->Buffer[i] = tolowerW(src->Buffer[i]);
1073 1074 1075 1076 1077 1078
    } /* for */
    dest->Length = len;
    return STATUS_SUCCESS;
}


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/**************************************************************************
1080 1081
 *	RtlUpcaseUnicodeStringToAnsiString   (NTDLL.@)
 *
1082 1083 1084 1085 1086
 * Converts a Unicode string to the equivalent ANSI upper-case representation.
 *
 * RETURNS
 *  NTSTATUS code
 *
1087 1088
 * NOTES
 *  writes terminating 0
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 */
1090 1091 1092
NTSTATUS WINAPI RtlUpcaseUnicodeStringToAnsiString( STRING *dst,
                                                    const UNICODE_STRING *src,
                                                    BOOLEAN doalloc )
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{
1094 1095 1096 1097 1098 1099 1100 1101 1102 1103
    NTSTATUS ret;
    UNICODE_STRING upcase;

    if (!(ret = RtlUpcaseUnicodeString( &upcase, src, TRUE )))
    {
        ret = RtlUnicodeStringToAnsiString( dst, &upcase, doalloc );
        RtlFreeUnicodeString( &upcase );
    }
    return ret;
}
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1106 1107 1108
/**************************************************************************
 *	RtlUpcaseUnicodeStringToOemString   (NTDLL.@)
 *
1109 1110 1111 1112 1113 1114
 * Converts a UNICODE_STRING to the equivalent OEM upper-case representation
 * stored in STRING format.
 *
 * RETURNS
 *  NTSTATUS code
 *
1115 1116 1117 1118 1119 1120 1121 1122 1123 1124 1125 1126 1127 1128 1129 1130 1131
 * NOTES
 *  writes terminating 0
 */
NTSTATUS WINAPI RtlUpcaseUnicodeStringToOemString( STRING *dst,
                                                   const UNICODE_STRING *src,
                                                   BOOLEAN doalloc )
{
    NTSTATUS ret;
    UNICODE_STRING upcase;

    if (!(ret = RtlUpcaseUnicodeString( &upcase, src, TRUE )))
    {
        ret = RtlUnicodeStringToOemString( dst, &upcase, doalloc );
        RtlFreeUnicodeString( &upcase );
    }
    return ret;
}
1132 1133


1134 1135 1136
/**************************************************************************
 *	RtlUpcaseUnicodeStringToCountedOemString   (NTDLL.@)
 *
1137 1138 1139 1140 1141 1142
 * Converts a UNICODE_STRING to the equivalent OEM upper-case representation
 * stored in STRING format.
 *
 * RETURNS
 *  NTSTATUS code
 *
1143 1144 1145 1146 1147 1148 1149 1150 1151
 * NOTES
 *  Same as RtlUpcaseUnicodeStringToOemString but doesn't write terminating null
 */
NTSTATUS WINAPI RtlUpcaseUnicodeStringToCountedOemString( STRING *oem,
                                                          const UNICODE_STRING *uni,
                                                          BOOLEAN doalloc )
{
    NTSTATUS ret;
    UNICODE_STRING upcase;
1152
    WCHAR tmp[32];
1153

1154 1155 1156 1157 1158 1159
    upcase.Buffer = tmp;
    upcase.MaximumLength = sizeof(tmp);
    ret = RtlUpcaseUnicodeString( &upcase, uni, FALSE );
    if (ret == STATUS_BUFFER_OVERFLOW) ret = RtlUpcaseUnicodeString( &upcase, uni, TRUE );

    if (!ret)
1160 1161 1162 1163 1164 1165
    {
        DWORD len = RtlUnicodeStringToOemSize( &upcase ) - 1;
        oem->Length = len;
        if (doalloc)
        {
            oem->MaximumLength = len;
1166
            if (!(oem->Buffer = RtlAllocateHeap( GetProcessHeap(), 0, len )))
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            {
                ret = STATUS_NO_MEMORY;
                goto done;
            }
        }
        else if (oem->MaximumLength < len)
        {
            ret = STATUS_BUFFER_OVERFLOW;
            oem->Length = oem->MaximumLength;
            if (!oem->MaximumLength) goto done;
        }
        RtlUnicodeToOemN( oem->Buffer, oem->Length, NULL, upcase.Buffer, upcase.Length );
    done:
1180
        if (upcase.Buffer != tmp) RtlFreeUnicodeString( &upcase );
1181 1182 1183 1184 1185
    }
    return ret;
}


1186 1187
/**************************************************************************
 *	RtlUpcaseUnicodeToMultiByteN   (NTDLL.@)
1188 1189 1190 1191 1192
 *
 * Converts a Unicode string to the equivalent ANSI upper-case representation.
 *
 * RETURNS
 *  NTSTATUS code
1193 1194 1195 1196 1197 1198 1199 1200
 */
NTSTATUS WINAPI RtlUpcaseUnicodeToMultiByteN( LPSTR dst, DWORD dstlen, LPDWORD reslen,
                                              LPCWSTR src, DWORD srclen )
{
    NTSTATUS ret;
    LPWSTR upcase;
    DWORD i;

1201
    if (!(upcase = RtlAllocateHeap( GetProcessHeap(), 0, srclen ))) return STATUS_NO_MEMORY;
1202 1203
    for (i = 0; i < srclen/sizeof(WCHAR); i++) upcase[i] = toupperW(src[i]);
    ret = RtlUnicodeToMultiByteN( dst, dstlen, reslen, upcase, srclen );
1204
    RtlFreeHeap( GetProcessHeap(), 0, upcase );
1205
    return ret;
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}

1208

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/**************************************************************************
1210
 *	RtlUpcaseUnicodeToOemN   (NTDLL.@)
1211 1212 1213 1214 1215
 *
 * Converts a Unicode string to the equivalent OEM upper-case representation.
 *
 * RETURNS
 *  NTSTATUS code
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 */
1217 1218
NTSTATUS WINAPI RtlUpcaseUnicodeToOemN( LPSTR dst, DWORD dstlen, LPDWORD reslen,
                                        LPCWSTR src, DWORD srclen )
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{
1220 1221 1222 1223
    NTSTATUS ret;
    LPWSTR upcase;
    DWORD i;

1224
    if (!(upcase = RtlAllocateHeap( GetProcessHeap(), 0, srclen ))) return STATUS_NO_MEMORY;
1225 1226
    for (i = 0; i < srclen/sizeof(WCHAR); i++) upcase[i] = toupperW(src[i]);
    ret = RtlUnicodeToOemN( dst, dstlen, reslen, upcase, srclen );
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    RtlFreeHeap( GetProcessHeap(), 0, upcase );
1228 1229
    return ret;
}
1230 1231


1232
/*
1233
        STRING SIZE
1234
*/
1235

1236

1237 1238
/**************************************************************************
 *      RtlOemStringToUnicodeSize   (NTDLL.@)
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 *      RtlxOemStringToUnicodeSize  (NTDLL.@)
1240
 *
1241
 * Calculate the size in bytes necessary for the Unicode conversion of str,
1242
 * including the terminating '\0'.
1243 1244 1245 1246 1247 1248
 *
 * PARAMS
 *  str [I] String to calculate the size of
 *
 * RETURNS
 *  The calculated size.
1249
 */
1250
UINT WINAPI RtlOemStringToUnicodeSize( const STRING *str )
1251
{
1252
    int ret = wine_cp_mbstowcs( oem_table, 0, str->Buffer, str->Length, NULL, 0 );
1253
    return (ret + 1) * sizeof(WCHAR);
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}

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/**************************************************************************
1258
 *      RtlAnsiStringToUnicodeSize   (NTDLL.@)
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 *      RtlxAnsiStringToUnicodeSize  (NTDLL.@)
1260
 *
1261
 * Calculate the size in bytes necessary for the Unicode conversion of str,
1262
 * including the terminating '\0'.
1263 1264 1265 1266 1267 1268
 *
 * PARAMS
 *  str [I] String to calculate the size of
 *
 * RETURNS
 *  The calculated size.
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 */
1270
DWORD WINAPI RtlAnsiStringToUnicodeSize( const STRING *str )
1271
{
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    DWORD ret;
    RtlMultiByteToUnicodeSize( &ret, str->Buffer, str->Length );
    return ret + sizeof(WCHAR);
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}
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/**************************************************************************
 *      RtlMultiByteToUnicodeSize   (NTDLL.@)
 *
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 * Compute the size in bytes necessary for the Unicode conversion of str,
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 * without the terminating '\0'.
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 *
 * PARAMS
 *  size [O] Destination for size
 *  str  [I] String to calculate the size of
 *  len  [I] Length of str
 *
 * RETURNS
 *  STATUS_SUCCESS.
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 */
NTSTATUS WINAPI RtlMultiByteToUnicodeSize( DWORD *size, LPCSTR str, UINT len )
{
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    *size = wine_cp_mbstowcs( ansi_table, 0, str, len, NULL, 0 ) * sizeof(WCHAR);
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    return STATUS_SUCCESS;
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}
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/**************************************************************************
 *      RtlUnicodeToMultiByteSize   (NTDLL.@)
 *
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 * Calculate the size in bytes necessary for the multibyte conversion of str,
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 * without the terminating '\0'.
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 *
 * PARAMS
 *  size [O] Destination for size
 *  str  [I] String to calculate the size of
 *  len  [I] Length of str
 *
 * RETURNS
 *  STATUS_SUCCESS.
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 */
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NTSTATUS WINAPI RtlUnicodeToMultiByteSize( PULONG size, LPCWSTR str, ULONG len )
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{
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    *size = wine_cp_wcstombs( ansi_table, 0, str, len / sizeof(WCHAR), NULL, 0, NULL, NULL );
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    return STATUS_SUCCESS;
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}

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/**************************************************************************
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 *      RtlUnicodeStringToAnsiSize   (NTDLL.@)
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 *      RtlxUnicodeStringToAnsiSize  (NTDLL.@)
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 *
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 * Calculate the size in bytes necessary for the Ansi conversion of str,
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 * including the terminating '\0'.
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 *
 * PARAMS
 *  str [I] String to calculate the size of
 *
 * RETURNS
 *  The calculated size.
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 */
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DWORD WINAPI RtlUnicodeStringToAnsiSize( const UNICODE_STRING *str )
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{
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    DWORD ret;
    RtlUnicodeToMultiByteSize( &ret, str->Buffer, str->Length );
    return ret + 1;
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}
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/**************************************************************************
 *      RtlUnicodeStringToOemSize   (NTDLL.@)
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 *      RtlxUnicodeStringToOemSize  (NTDLL.@)
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 *
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 * Calculate the size in bytes necessary for the OEM conversion of str,
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 * including the terminating '\0'.
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 *
 * PARAMS
 *  str [I] String to calculate the size of
 *
 * RETURNS
 *  The calculated size.
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 */
DWORD WINAPI RtlUnicodeStringToOemSize( const UNICODE_STRING *str )
{
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    return wine_cp_wcstombs( oem_table, 0, str->Buffer, str->Length / sizeof(WCHAR),
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                             NULL, 0, NULL, NULL ) + 1;
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}
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/**************************************************************************
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 *      RtlAppendAsciizToString   (NTDLL.@)
 *
 * Concatenates a buffered character string and a '\0' terminated character
 * string
 *
 * RETURNS
 *  Success: STATUS_SUCCESS. src is appended to dest.
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 *  Failure: STATUS_BUFFER_TOO_SMALL, if the buffer of dest is too small
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 *                  to hold the concatenated string.
 *
 * NOTES
 *  if src is NULL dest is unchanged.
 *  dest is never '\0' terminated.
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 */
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NTSTATUS WINAPI RtlAppendAsciizToString(
    STRING *dest, /* [I/O] Buffered character string to which src is concatenated */
    LPCSTR src)   /* [I]   '\0' terminated character string to be concatenated */
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{
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    if (src != NULL) {
        unsigned int src_len = strlen(src);
        unsigned int dest_len  = src_len + dest->Length;

        if (dest_len > dest->MaximumLength) return STATUS_BUFFER_TOO_SMALL;
        memcpy(dest->Buffer + dest->Length, src, src_len);
        dest->Length = dest_len;
    } /* if */
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    return STATUS_SUCCESS;
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}

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/**************************************************************************
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 *      RtlAppendStringToString   (NTDLL.@)
 *
 * Concatenates two buffered character strings
 *
 * RETURNS
 *  Success: STATUS_SUCCESS. src is appended to dest.
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 *  Failure: STATUS_BUFFER_TOO_SMALL, if the buffer of dest is too small
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 *                  to hold the concatenated string.
 *
 * NOTES
 *  if src->length is zero dest is unchanged.
 *  dest is never '\0' terminated.
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 */
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NTSTATUS WINAPI RtlAppendStringToString(
    STRING *dest,       /* [I/O] Buffered character string to which src is concatenated */
    const STRING *src)  /* [I]   Buffered character string to be concatenated */
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{
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    if (src->Length != 0) {
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        unsigned int dest_len = src->Length + dest->Length;
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        if (dest_len > dest->MaximumLength) return STATUS_BUFFER_TOO_SMALL;
        memcpy(dest->Buffer + dest->Length, src->Buffer, src->Length);
        dest->Length = dest_len;
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    } /* if */
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    return STATUS_SUCCESS;
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}

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/**************************************************************************
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 *      RtlAppendUnicodeToString   (NTDLL.@)
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 *
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 * Concatenates a buffered unicode string and a '\0' terminated unicode 
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 * string
 *
 * RETURNS
 *  Success: STATUS_SUCCESS. src is appended to dest.
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 *  Failure: STATUS_BUFFER_TOO_SMALL, if the buffer of dest is too small
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 *                  to hold the concatenated string.
 *
 * NOTES
 *  if src is NULL dest is unchanged.
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 *  dest is '\0' terminated when the MaximumLength allows it.
 *  When dest fits exactly in MaximumLength characters the '\0' is omitted.
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 *
 * DIFFERENCES
 *  Does not write in the src->Buffer beyond MaximumLength when
 *  MaximumLength is odd as the native function does.
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 */
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NTSTATUS WINAPI RtlAppendUnicodeToString(
    UNICODE_STRING *dest, /* [I/O] Buffered unicode string to which src is concatenated */
    LPCWSTR src)          /* [I]   '\0' terminated unicode string to be concatenated */
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{
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    if (src != NULL) {
        unsigned int src_len = strlenW(src) * sizeof(WCHAR);
        unsigned int dest_len  = src_len + dest->Length;

        if (dest_len > dest->MaximumLength) return STATUS_BUFFER_TOO_SMALL;
        memcpy(dest->Buffer + dest->Length/sizeof(WCHAR), src, src_len);
        dest->Length = dest_len;
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        /* append terminating '\0' if enough space */
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        if (dest_len + sizeof(WCHAR) <= dest->MaximumLength) {
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            dest->Buffer[dest_len / sizeof(WCHAR)] = 0;
        } /* if */
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    } /* if */
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    return STATUS_SUCCESS;
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}

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/**************************************************************************
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 *      RtlAppendUnicodeStringToString   (NTDLL.@)
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 *
 * Concatenates two buffered unicode strings
 *
 * RETURNS
 *  Success: STATUS_SUCCESS. src is appended to dest.
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 *  Failure: STATUS_BUFFER_TOO_SMALL, if the buffer of dest is too small
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 *                  to hold the concatenated string.
 *
 * NOTES
 *  if src->length is zero dest is unchanged.
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 *  dest is '\0' terminated when the MaximumLength allows it.
 *  When dest fits exactly in MaximumLength characters the '\0' is omitted.
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 *
 * DIFFERENCES
 *  Does not write in the src->Buffer beyond MaximumLength when
 *  MaximumLength is odd as the native function does.
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 */
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NTSTATUS WINAPI RtlAppendUnicodeStringToString(
    UNICODE_STRING *dest,      /* [I/O] Buffered unicode string to which src is concatenated */
    const UNICODE_STRING *src) /* [I]   Buffered unicode string to be concatenated */
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{
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    if (src->Length != 0) {
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        unsigned int dest_len = src->Length + dest->Length;

        if (dest_len > dest->MaximumLength) return STATUS_BUFFER_TOO_SMALL;
        memcpy(dest->Buffer + dest->Length/sizeof(WCHAR), src->Buffer, src->Length);
        dest->Length = dest_len;
        /* append terminating '\0' if enough space */
        if (dest_len + sizeof(WCHAR) <= dest->MaximumLength) {
            dest->Buffer[dest_len / sizeof(WCHAR)] = 0;
        } /* if */
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    } /* if */
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    return STATUS_SUCCESS;
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}

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/**************************************************************************
 *      RtlFindCharInUnicodeString   (NTDLL.@)
 *
 * Searches for one of several unicode characters in an unicode string.
 *
 * RETURNS
 *  Success: STATUS_SUCCESS. pos contains the position after the character found.
 *  Failure: STATUS_NOT_FOUND, if none of the search_chars are in main_str.
 */
NTSTATUS WINAPI RtlFindCharInUnicodeString(
    int flags,                          /* [I] Flags */
    const UNICODE_STRING *main_str,     /* [I] Unicode string in which one or more characters are searched */
    const UNICODE_STRING *search_chars, /* [I] Unicode string which contains the characters to search for */
    USHORT *pos)                        /* [O] Position of the first character found + 2 */
{
    int main_idx;
    unsigned int search_idx;

    switch (flags) {
        case 0:
            for (main_idx = 0; main_idx < main_str->Length / sizeof(WCHAR); main_idx++) {
                for (search_idx = 0; search_idx < search_chars->Length / sizeof(WCHAR); search_idx++) {
                    if (main_str->Buffer[main_idx] == search_chars->Buffer[search_idx]) {
                        *pos = (main_idx + 1) * sizeof(WCHAR);
                        return STATUS_SUCCESS;
                    }
                }
            }
            *pos = 0;
            return STATUS_NOT_FOUND;
        case 1:
            for (main_idx = main_str->Length / sizeof(WCHAR) - 1; main_idx >= 0; main_idx--) {
                for (search_idx = 0; search_idx < search_chars->Length / sizeof(WCHAR); search_idx++) {
                    if (main_str->Buffer[main_idx] == search_chars->Buffer[search_idx]) {
                        *pos = main_idx * sizeof(WCHAR);
                        return STATUS_SUCCESS;
                    }
                }
            }
            *pos = 0;
            return STATUS_NOT_FOUND;
        case 2:
            for (main_idx = 0; main_idx < main_str->Length / sizeof(WCHAR); main_idx++) {
                search_idx = 0;
                while (search_idx < search_chars->Length / sizeof(WCHAR) &&
                         main_str->Buffer[main_idx] != search_chars->Buffer[search_idx]) {
                    search_idx++;
                }
                if (search_idx >= search_chars->Length / sizeof(WCHAR)) {
                    *pos = (main_idx + 1) * sizeof(WCHAR);
                    return STATUS_SUCCESS;
                }
            }
            *pos = 0;
            return STATUS_NOT_FOUND;
        case 3:
            for (main_idx = main_str->Length / sizeof(WCHAR) - 1; main_idx >= 0; main_idx--) {
                search_idx = 0;
                while (search_idx < search_chars->Length / sizeof(WCHAR) &&
                         main_str->Buffer[main_idx] != search_chars->Buffer[search_idx]) {
                    search_idx++;
                }
                if (search_idx >= search_chars->Length / sizeof(WCHAR)) {
                    *pos = main_idx * sizeof(WCHAR);
                    return STATUS_SUCCESS;
                }
            }
            *pos = 0;
            return STATUS_NOT_FOUND;
    } /* switch */
    return STATUS_NOT_FOUND;
}


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/*
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        MISC
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*/
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/**************************************************************************
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 *	RtlIsTextUnicode (NTDLL.@)
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 *
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 * Attempt to guess whether a text buffer is Unicode.
 *
 * PARAMS
 *  buf [I] Text buffer to test
 *  len [I] Length of buf
 *  pf  [O] Destination for test results
 *
 * RETURNS
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 *  TRUE if the buffer is likely Unicode, FALSE otherwise.
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 *
 * FIXME
 *  Should implement more tests.
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 */
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BOOLEAN WINAPI RtlIsTextUnicode( LPCVOID buf, INT len, INT *pf )
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{
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    static const WCHAR std_control_chars[] = {'\r','\n','\t',' ',0x3000,0};
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    static const WCHAR byterev_control_chars[] = {0x0d00,0x0a00,0x0900,0x2000,0};
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    const WCHAR *s = buf;
    int i;
    unsigned int flags = ~0U, out_flags = 0;

    if (len < sizeof(WCHAR))
    {
        /* FIXME: MSDN documents IS_TEXT_UNICODE_BUFFER_TOO_SMALL but there is no such thing... */
        if (pf) *pf = 0;
        return FALSE;
    }
    if (pf)
        flags = *pf;
    /*
     * Apply various tests to the text string. According to the
     * docs, each test "passed" sets the corresponding flag in
     * the output flags. But some of the tests are mutually
     * exclusive, so I don't see how you could pass all tests ...
     */

    /* Check for an odd length ... pass if even. */
    if (len & 1) out_flags |= IS_TEXT_UNICODE_ODD_LENGTH;

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    if (((char *)buf)[len - 1] == 0)
        len--;  /* Windows seems to do something like that to avoid e.g. false IS_TEXT_UNICODE_NULL_BYTES  */

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    len /= sizeof(WCHAR);
    /* Windows only checks the first 256 characters */
    if (len > 256) len = 256;

    /* Check for the special byte order unicode marks. */
    if (*s == 0xFEFF) out_flags |= IS_TEXT_UNICODE_SIGNATURE;
    if (*s == 0xFFFE) out_flags |= IS_TEXT_UNICODE_REVERSE_SIGNATURE;
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    /* apply some statistical analysis */
    if (flags & IS_TEXT_UNICODE_STATISTICS)
    {
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        int stats = 0;
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        /* FIXME: checks only for ASCII characters in the unicode stream */
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        for (i = 0; i < len; i++)
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        {
            if (s[i] <= 255) stats++;
        }
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        if (stats > len / 2)
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            out_flags |= IS_TEXT_UNICODE_STATISTICS;
    }

    /* Check for unicode NULL chars */
    if (flags & IS_TEXT_UNICODE_NULL_BYTES)
    {
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        for (i = 0; i < len; i++)
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        {
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            if (!(s[i] & 0xff) || !(s[i] >> 8))
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            {
                out_flags |= IS_TEXT_UNICODE_NULL_BYTES;
                break;
            }
        }
    }

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    if (flags & IS_TEXT_UNICODE_CONTROLS)
    {
        for (i = 0; i < len; i++)
        {
            if (strchrW(std_control_chars, s[i]))
            {
                out_flags |= IS_TEXT_UNICODE_CONTROLS;
                break;
            }
        }
    }

    if (flags & IS_TEXT_UNICODE_REVERSE_CONTROLS)
    {
        for (i = 0; i < len; i++)
        {
            if (strchrW(byterev_control_chars, s[i]))
            {
                out_flags |= IS_TEXT_UNICODE_REVERSE_CONTROLS;
                break;
            }
        }
    }

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    if (pf)
    {
        out_flags &= *pf;
        *pf = out_flags;
    }
    /* check for flags that indicate it's definitely not valid Unicode */
    if (out_flags & (IS_TEXT_UNICODE_REVERSE_MASK | IS_TEXT_UNICODE_NOT_UNICODE_MASK)) return FALSE;
    /* now check for invalid ASCII, and assume Unicode if so */
    if (out_flags & IS_TEXT_UNICODE_NOT_ASCII_MASK) return TRUE;
    /* now check for Unicode flags */
    if (out_flags & IS_TEXT_UNICODE_UNICODE_MASK) return TRUE;
    /* no flags set */
    return FALSE;
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}
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/**************************************************************************
 *      RtlCharToInteger   (NTDLL.@)
 *
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 * Converts a character string into its integer equivalent.
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 *
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 * RETURNS
 *  Success: STATUS_SUCCESS. value contains the converted number
 *  Failure: STATUS_INVALID_PARAMETER, if base is not 0, 2, 8, 10 or 16.
 *           STATUS_ACCESS_VIOLATION, if value is NULL.
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 *
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 * NOTES
 *  For base 0 it uses 10 as base and the string should be in the format
 *      "{whitespace} [+|-] [0[x|o|b]] {digits}".
 *  For other bases the string should be in the format
 *      "{whitespace} [+|-] {digits}".
 *  No check is made for value overflow, only the lower 32 bits are assigned.
 *  If str is NULL it crashes, as the native function does.
 *
 * DIFFERENCES
 *  This function does not read garbage behind '\0' as the native version does.
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 */
NTSTATUS WINAPI RtlCharToInteger(
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    PCSZ str,      /* [I] '\0' terminated single-byte string containing a number */
    ULONG base,    /* [I] Number base for conversion (allowed 0, 2, 8, 10 or 16) */
    ULONG *value)  /* [O] Destination for the converted value */
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{
    CHAR chCurrent;
    int digit;
    ULONG RunningTotal = 0;
    char bMinus = 0;

    while (*str != '\0' && *str <= ' ') {
	str++;
    } /* while */

    if (*str == '+') {
	str++;
    } else if (*str == '-') {
	bMinus = 1;
	str++;
    } /* if */

    if (base == 0) {
	base = 10;
	if (str[0] == '0') {
	    if (str[1] == 'b') {
		str += 2;
		base = 2;
	    } else if (str[1] == 'o') {
		str += 2;
		base = 8;
	    } else if (str[1] == 'x') {
		str += 2;
		base = 16;
	    } /* if */
	} /* if */
    } else if (base != 2 && base != 8 && base != 10 && base != 16) {
	return STATUS_INVALID_PARAMETER;
    } /* if */

    if (value == NULL) {
	return STATUS_ACCESS_VIOLATION;
    } /* if */

    while (*str != '\0') {
	chCurrent = *str;
	if (chCurrent >= '0' && chCurrent <= '9') {
	    digit = chCurrent - '0';
	} else if (chCurrent >= 'A' && chCurrent <= 'Z') {
	    digit = chCurrent - 'A' + 10;
	} else if (chCurrent >= 'a' && chCurrent <= 'z') {
	    digit = chCurrent - 'a' + 10;
	} else {
	    digit = -1;
	} /* if */
	if (digit < 0 || digit >= base) {
	    *value = bMinus ? -RunningTotal : RunningTotal;
	    return STATUS_SUCCESS;
	} /* if */

	RunningTotal = RunningTotal * base + digit;
	str++;
    } /* while */

    *value = bMinus ? -RunningTotal : RunningTotal;
    return STATUS_SUCCESS;
}


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/**************************************************************************
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 *      RtlIntegerToChar   (NTDLL.@)
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 *
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 * Converts an unsigned integer to a character string.
 *
 * RETURNS
 *  Success: STATUS_SUCCESS. str contains the converted number
 *  Failure: STATUS_INVALID_PARAMETER, if base is not 0, 2, 8, 10 or 16.
 *           STATUS_BUFFER_OVERFLOW, if str would be larger than length.
 *           STATUS_ACCESS_VIOLATION, if str is NULL.
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 *
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 * NOTES
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 *  Instead of base 0 it uses 10 as base.
 *  Writes at most length characters to the string str.
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 *  Str is '\0' terminated when length allows it.
 *  When str fits exactly in length characters the '\0' is omitted.
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 */
NTSTATUS WINAPI RtlIntegerToChar(
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    ULONG value,   /* [I] Value to be converted */
    ULONG base,    /* [I] Number base for conversion (allowed 0, 2, 8, 10 or 16) */
    ULONG length,  /* [I] Length of the str buffer in bytes */
    PCHAR str)     /* [O] Destination for the converted value */
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{
    CHAR buffer[33];
    PCHAR pos;
    CHAR digit;
    ULONG len;

    if (base == 0) {
	base = 10;
    } else if (base != 2 && base != 8 && base != 10 && base != 16) {
	return STATUS_INVALID_PARAMETER;
    } /* if */

    pos = &buffer[32];
    *pos = '\0';

    do {
	pos--;
	digit = value % base;
	value = value / base;
	if (digit < 10) {
	    *pos = '0' + digit;
	} else {
	    *pos = 'A' + digit - 10;
	} /* if */
    } while (value != 0L);

    len = &buffer[32] - pos;
    if (len > length) {
	return STATUS_BUFFER_OVERFLOW;
    } else if (str == NULL) {
	return STATUS_ACCESS_VIOLATION;
    } else if (len == length) {
	memcpy(str, pos, len);
    } else {
	memcpy(str, pos, len + 1);
    } /* if */
    return STATUS_SUCCESS;
}


/**************************************************************************
 *      RtlUnicodeStringToInteger (NTDLL.@)
 *
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 * Converts an unicode string into its integer equivalent.
 *
 * RETURNS
 *  Success: STATUS_SUCCESS. value contains the converted number
 *  Failure: STATUS_INVALID_PARAMETER, if base is not 0, 2, 8, 10 or 16.
 *           STATUS_ACCESS_VIOLATION, if value is NULL.
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 *
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 * NOTES
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 *  For base 0 it uses 10 as base and the string should be in the format
 *      "{whitespace} [+|-] [0[x|o|b]] {digits}".
 *  For other bases the string should be in the format
 *      "{whitespace} [+|-] {digits}".
 *  No check is made for value overflow, only the lower 32 bits are assigned.
 *  If str is NULL it crashes, as the native function does.
 *
 * DIFFERENCES
 *  This function does not read garbage on string length 0 as the native
 *  version does.
1868 1869
 */
NTSTATUS WINAPI RtlUnicodeStringToInteger(
1870 1871 1872
    const UNICODE_STRING *str, /* [I] Unicode string to be converted */
    ULONG base,                /* [I] Number base for conversion (allowed 0, 2, 8, 10 or 16) */
    ULONG *value)              /* [O] Destination for the converted value */
1873 1874 1875 1876 1877 1878 1879 1880 1881 1882 1883 1884 1885 1886 1887 1888 1889 1890 1891 1892 1893 1894 1895 1896 1897 1898 1899 1900 1901 1902 1903 1904 1905 1906 1907 1908 1909 1910
{
    LPWSTR lpwstr = str->Buffer;
    USHORT CharsRemaining = str->Length / sizeof(WCHAR);
    WCHAR wchCurrent;
    int digit;
    ULONG RunningTotal = 0;
    char bMinus = 0;

    while (CharsRemaining >= 1 && *lpwstr <= ' ') {
	lpwstr++;
	CharsRemaining--;
    } /* while */

    if (CharsRemaining >= 1) {
	if (*lpwstr == '+') {
	    lpwstr++;
	    CharsRemaining--;
	} else if (*lpwstr == '-') {
	    bMinus = 1;
	    lpwstr++;
	    CharsRemaining--;
	} /* if */
    } /* if */

    if (base == 0) {
	base = 10;
	if (CharsRemaining >= 2 && lpwstr[0] == '0') {
	    if (lpwstr[1] == 'b') {
		lpwstr += 2;
		CharsRemaining -= 2;
		base = 2;
	    } else if (lpwstr[1] == 'o') {
		lpwstr += 2;
		CharsRemaining -= 2;
		base = 8;
	    } else if (lpwstr[1] == 'x') {
		lpwstr += 2;
		CharsRemaining -= 2;
1911
		base = 16;
1912 1913 1914 1915 1916 1917 1918 1919 1920 1921 1922 1923 1924 1925 1926 1927 1928 1929 1930 1931 1932 1933 1934 1935 1936 1937 1938 1939 1940 1941 1942 1943 1944 1945 1946 1947 1948 1949 1950
	    } /* if */
	} /* if */
    } else if (base != 2 && base != 8 && base != 10 && base != 16) {
	return STATUS_INVALID_PARAMETER;
    } /* if */

    if (value == NULL) {
	return STATUS_ACCESS_VIOLATION;
    } /* if */

    while (CharsRemaining >= 1) {
	wchCurrent = *lpwstr;
	if (wchCurrent >= '0' && wchCurrent <= '9') {
	    digit = wchCurrent - '0';
	} else if (wchCurrent >= 'A' && wchCurrent <= 'Z') {
	    digit = wchCurrent - 'A' + 10;
	} else if (wchCurrent >= 'a' && wchCurrent <= 'z') {
	    digit = wchCurrent - 'a' + 10;
	} else {
	    digit = -1;
	} /* if */
	if (digit < 0 || digit >= base) {
	    *value = bMinus ? -RunningTotal : RunningTotal;
	    return STATUS_SUCCESS;
	} /* if */

	RunningTotal = RunningTotal * base + digit;
	lpwstr++;
	CharsRemaining--;
    } /* while */

    *value = bMinus ? -RunningTotal : RunningTotal;
    return STATUS_SUCCESS;
}


/**************************************************************************
 *	RtlIntegerToUnicodeString (NTDLL.@)
 *
1951 1952 1953 1954 1955 1956 1957 1958 1959
 * Converts an unsigned integer to a '\0' terminated unicode string.
 *
 * RETURNS
 *  Success: STATUS_SUCCESS. str contains the converted number
 *  Failure: STATUS_INVALID_PARAMETER, if base is not 0, 2, 8, 10 or 16.
 *           STATUS_BUFFER_OVERFLOW, if str is too small to hold the string
 *                  (with the '\0' termination). In this case str->Length
 *                  is set to the length, the string would have (which can
 *                  be larger than the MaximumLength).
1960
 *
1961
 * NOTES
1962 1963 1964 1965 1966 1967 1968
 *  Instead of base 0 it uses 10 as base.
 *  If str is NULL it crashes, as the native function does.
 *
 * DIFFERENCES
 *  Do not return STATUS_BUFFER_OVERFLOW when the string is long enough.
 *  The native function does this when the string would be longer than 16
 *  characters even when the string parameter is long enough.
1969 1970
 */
NTSTATUS WINAPI RtlIntegerToUnicodeString(
1971 1972 1973
    ULONG value,         /* [I] Value to be converted */
    ULONG base,          /* [I] Number base for conversion (allowed 0, 2, 8, 10 or 16) */
    UNICODE_STRING *str) /* [O] Destination for the converted value */
1974 1975 1976 1977 1978 1979 1980 1981 1982 1983 1984 1985 1986 1987 1988 1989 1990 1991 1992 1993 1994 1995 1996 1997 1998 1999 2000 2001 2002
{
    WCHAR buffer[33];
    PWCHAR pos;
    WCHAR digit;

    if (base == 0) {
	base = 10;
    } else if (base != 2 && base != 8 && base != 10 && base != 16) {
	return STATUS_INVALID_PARAMETER;
    } /* if */

    pos = &buffer[32];
    *pos = '\0';

    do {
	pos--;
	digit = value % base;
	value = value / base;
	if (digit < 10) {
	    *pos = '0' + digit;
	} else {
	    *pos = 'A' + digit - 10;
	} /* if */
    } while (value != 0L);

    str->Length = (&buffer[32] - pos) * sizeof(WCHAR);
    if (str->Length >= str->MaximumLength) {
	return STATUS_BUFFER_OVERFLOW;
    } else {
2003
	memcpy(str->Buffer, pos, str->Length + sizeof(WCHAR));
2004 2005
    } /* if */
    return STATUS_SUCCESS;
2006
}
2007 2008 2009 2010 2011 2012 2013 2014 2015 2016 2017 2018 2019 2020 2021 2022 2023 2024


/*************************************************************************
 * RtlGUIDFromString (NTDLL.@)
 *
 * Convert a string representation of a GUID into a GUID.
 *
 * PARAMS
 *  str  [I] String representation in the format "{XXXXXXXX-XXXX-XXXX-XXXX-XXXXXXXXXXXX}"
 *  guid [O] Destination for the converted GUID
 *
 * RETURNS
 *  Success: STATUS_SUCCESS. guid contains the converted value.
 *  Failure: STATUS_INVALID_PARAMETER, if str is not in the expected format.
 *
 * SEE ALSO
 *  See RtlStringFromGUID.
 */
2025
NTSTATUS WINAPI RtlGUIDFromString(PUNICODE_STRING str, GUID* guid)
2026 2027 2028 2029 2030 2031 2032 2033 2034 2035
{
  int i = 0;
  const WCHAR *lpszCLSID = str->Buffer;
  BYTE* lpOut = (BYTE*)guid;

  TRACE("(%s,%p)\n", debugstr_us(str), guid);

  /* Convert string: {XXXXXXXX-XXXX-XXXX-XXXX-XXXXXXXXXXXX}
   * to memory:       DWORD... WORD WORD BYTES............
   */
2036
  while (i <= 37)
2037 2038 2039 2040 2041 2042 2043 2044 2045 2046 2047 2048 2049 2050 2051 2052 2053 2054 2055 2056 2057 2058 2059 2060 2061 2062 2063 2064 2065 2066 2067 2068 2069 2070 2071 2072 2073 2074 2075 2076 2077 2078 2079 2080 2081 2082 2083 2084 2085 2086 2087 2088 2089 2090 2091 2092 2093 2094 2095 2096 2097 2098 2099 2100 2101 2102 2103 2104 2105 2106 2107 2108 2109 2110 2111 2112 2113 2114 2115 2116 2117 2118 2119 2120 2121 2122 2123 2124 2125
  {
    switch (i)
    {
    case 0:
      if (*lpszCLSID != '{')
        return STATUS_INVALID_PARAMETER;
      break;

    case 9: case 14: case 19: case 24:
      if (*lpszCLSID != '-')
        return STATUS_INVALID_PARAMETER;
      break;

    case 37:
      if (*lpszCLSID != '}')
        return STATUS_INVALID_PARAMETER;
      break;

    default:
      {
        WCHAR ch = *lpszCLSID, ch2 = lpszCLSID[1];
        unsigned char byte;

        /* Read two hex digits as a byte value */
        if      (ch >= '0' && ch <= '9') ch = ch - '0';
        else if (ch >= 'a' && ch <= 'f') ch = ch - 'a' + 10;
        else if (ch >= 'A' && ch <= 'F') ch = ch - 'A' + 10;
        else return STATUS_INVALID_PARAMETER;

        if      (ch2 >= '0' && ch2 <= '9') ch2 = ch2 - '0';
        else if (ch2 >= 'a' && ch2 <= 'f') ch2 = ch2 - 'a' + 10;
        else if (ch2 >= 'A' && ch2 <= 'F') ch2 = ch2 - 'A' + 10;
        else return STATUS_INVALID_PARAMETER;

        byte = ch << 4 | ch2;

        switch (i)
        {
#ifndef WORDS_BIGENDIAN
        /* For Big Endian machines, we store the data such that the
         * dword/word members can be read as DWORDS and WORDS correctly. */
        /* Dword */
        case 1:  lpOut[3] = byte; break;
        case 3:  lpOut[2] = byte; break;
        case 5:  lpOut[1] = byte; break;
        case 7:  lpOut[0] = byte; lpOut += 4;  break;
        /* Word */
        case 10: case 15: lpOut[1] = byte; break;
        case 12: case 17: lpOut[0] = byte; lpOut += 2; break;
#endif
        /* Byte */
        default: lpOut[0] = byte; lpOut++; break;
        }
        lpszCLSID++; /* Skip 2nd character of byte */
        i++;
      }
    }
    lpszCLSID++;
    i++;
  }

  return STATUS_SUCCESS;
}

/*************************************************************************
 * RtlStringFromGUID (NTDLL.@)
 *
 * Convert a GUID into a string representation of a GUID.
 *
 * PARAMS
 *  guid [I] GUID to convert
 *  str  [O] Destination for the converted string
 *
 * RETURNS
 *  Success: STATUS_SUCCESS. str contains the converted value.
 *  Failure: STATUS_NO_MEMORY, if memory for str cannot be allocated.
 *
 * SEE ALSO
 *  See RtlGUIDFromString.
 */
NTSTATUS WINAPI RtlStringFromGUID(const GUID* guid, UNICODE_STRING *str)
{
  static const WCHAR szFormat[] = { '{','%','0','8','l','X','-',
    '%','0','4','X','-',  '%','0','4','X','-','%','0','2','X','%','0','2','X',
    '-',   '%','0','2','X','%','0','2','X','%','0','2','X','%','0','2','X',
    '%','0','2','X','%','0','2','X','}','\0' };

  TRACE("(%p,%p)\n", guid, str);

2126 2127 2128
  str->Length = GUID_STRING_LENGTH * sizeof(WCHAR);
  str->MaximumLength = str->Length + sizeof(WCHAR);
  str->Buffer = (WCHAR*)RtlAllocateHeap(GetProcessHeap(), 0, str->MaximumLength);
2129 2130 2131 2132 2133 2134 2135 2136 2137 2138 2139
  if (!str->Buffer)
  {
    str->Length = str->MaximumLength = 0;
    return STATUS_NO_MEMORY;
  }
  sprintfW(str->Buffer, szFormat, guid->Data1, guid->Data2, guid->Data3,
          guid->Data4[0], guid->Data4[1], guid->Data4[2], guid->Data4[3],
          guid->Data4[4], guid->Data4[5], guid->Data4[6], guid->Data4[7]);

  return STATUS_SUCCESS;
}