lcidtoname_downlevel.cpp File Reference

#include <corecrt_internal.h>

Include dependency graph for lcidtoname_downlevel.cpp:

Go to the source code of this file.

Classes
struct	anonymous_namespace{lcidtoname_downlevel.cpp}::LcidToLocaleName
struct	anonymous_namespace{lcidtoname_downlevel.cpp}::LocaleNameIndex

Namespaces
namespace	anonymous_namespace{lcidtoname_downlevel.cpp}

Functions
static int	GetTableIndexFromLocaleName (const wchar_t *localeName) throw ()
static int	GetTableIndexFromLcid (LCID lcid) throw ()
LCID __cdecl	__acrt_DownlevelLocaleNameToLCID (LPCWSTR localeName)
int __cdecl	__acrt_DownlevelLCIDToLocaleName (LCID lcid, LPWSTR outLocaleName, int cchLocaleName)

Variables
static const LcidToLocaleName	anonymous_namespace{lcidtoname_downlevel.cpp}::LcidToLocaleNameTable []
static const LocaleNameIndex	anonymous_namespace{lcidtoname_downlevel.cpp}::LocaleNameToIndexTable []

Function Documentation

__acrt_DownlevelLCIDToLocaleName()

int __cdecl __acrt_DownlevelLCIDToLocaleName	(	LCID	lcid,
		LPWSTR	outLocaleName,
		int	cchLocaleName
	)

Definition at line 566 of file lcidtoname_downlevel.cpp.

{
    size_t     count;
    wchar_t*   buffer;
    int        index;
 
    if (lcid == 0                           ||
        lcid == LOCALE_USER_DEFAULT         ||
        lcid == LOCALE_SYSTEM_DEFAULT)
    {
        return 0;
    }
 
    if ((outLocaleName == nullptr && cchLocaleName>0) || cchLocaleName < 0)
    {
        return 0;
    }
 
    index = GetTableIndexFromLcid(lcid);
    if (index < 0)
        return 0;
 
    buffer = LcidToLocaleNameTable[index].localeName;
    count = wcsnlen(buffer, LOCALE_NAME_MAX_LENGTH);
 
    if (cchLocaleName > 0)
    {
        if ((int)count >= cchLocaleName)
            return 0;
 
        _ERRCHECK(wcscpy_s(outLocaleName, cchLocaleName, buffer));
    }
 
    return (int) count + 1;
}

Referenced by __acrt_LCIDToLocaleName().

__acrt_DownlevelLocaleNameToLCID()

LCID __cdecl __acrt_DownlevelLocaleNameToLCID

(

LPCWSTR

localeName

)

Definition at line 551 of file lcidtoname_downlevel.cpp.

{
    int index;
 
    if (localeName == nullptr)
        return 0;
 
    index = GetTableIndexFromLocaleName(localeName);
 
    if (index < 0 || (index >= _countof(LcidToLocaleNameTable)))
        return 0;
 
    return LcidToLocaleNameTable[index].lcid;
}

GetTableIndexFromLcid()

static int GetTableIndexFromLcid ( LCID  lcid ) throw ( )

static

Definition at line 527 of file lcidtoname_downlevel.cpp.

{
 
    int bottom = 0;
    int top = _countof(LcidToLocaleNameTable) - 1;
 
    while (bottom <= top)
    {
        int middle = (bottom + top) / 2;
        int testIndex = lcid - LcidToLocaleNameTable[middle].lcid;
 
        if (testIndex == 0)
            return middle;
 
        if (testIndex < 0)
            top = middle - 1;
        else
            bottom = middle + 1;
    }
 
    return -1;
}

Referenced by __acrt_DownlevelLCIDToLocaleName().

GetTableIndexFromLocaleName()

static int GetTableIndexFromLocaleName ( const wchar_t *  localeName ) throw ( )

static

Definition at line 503 of file lcidtoname_downlevel.cpp.

{
    LocaleNameIndex *localeNamesIndex = (LocaleNameIndex *) LocaleNameToIndexTable;
    int bottom = 0;
    int top = _countof(LocaleNameToIndexTable) - 1;
 
    while (bottom <= top)
    {
        int middle = (bottom + top) / 2;
        int testIndex = __ascii_wcsnicmp(localeName, localeNamesIndex[middle].name, LOCALE_NAME_MAX_LENGTH);
 
        if (testIndex == 0)
            return localeNamesIndex[middle].index;
 
        if (testIndex < 0)
            top = middle - 1;
        else
            bottom = middle + 1;
    }
 
    return -1;
}

Referenced by __acrt_DownlevelLocaleNameToLCID().