windows-nt/Source/XPSP1/NT/shell/osshell/progman/unicrt.c
2020-09-26 16:20:57 +08:00

347 lines
9.8 KiB
C

/****************************************************************************/
/* */
/* MYCRT.C - */
/* */
/* My special Unicode workaround file for CRT functions calls */
/* from WIN32 Shell applications. */
/* */
/* Created by : Diane K. Oh */
/* On Date : June 11, 1992 */
/* */
/* This is a temporary fix and needs to be modified when Unicode */
/* is fully supported by CRT. */
/* */
/****************************************************************************/
#include <windows.h>
#include <stdlib.h>
#include <tchar.h>
#include <direct.h>
#ifdef UNICODE
#include <wchar.h>
#else
#include <string.h>
#endif
#define INT_SIZE_LENGTH 20
#define LONG_SIZE_LENGTH 40
//*****************************************************************
//
// MyAtoi and MyAtol
//
// Purpose : To convert from Unicode to ANSI string before
// calling CRT atoi and atol functions.
//
//*****************************************************************
INT MyAtoi (LPTSTR string)
{
CHAR szAnsi [INT_SIZE_LENGTH];
BOOL fDefCharUsed;
#ifdef UNICODE
BOOL bDBCS;
LCID lcid = GetThreadLocale();
bDBCS = ( (PRIMARYLANGID(LANGIDFROMLCID(lcid)) == LANG_JAPANESE) ||
(PRIMARYLANGID(LANGIDFROMLCID(lcid)) == LANG_KOREAN) ||
(PRIMARYLANGID(LANGIDFROMLCID(lcid)) == LANG_CHINESE)
);
if (bDBCS)
{
//fix mskkbug: #3871
//When Control panel calling this function, the string to be converted
//has extra charcters (not able to be converted integer value, such as 'a','b'.
//In that case, memory allocation error causes. So we have to make sure of it.
int iCnt, rValue;
LPBYTE mptr;
if( !(iCnt = WideCharToMultiByte (CP_ACP, 0, string, -1, szAnsi,
INT_SIZE_LENGTH, NULL, &fDefCharUsed)) )
{
iCnt = WideCharToMultiByte (CP_ACP, 0, string, -1, NULL,
0, NULL, &fDefCharUsed );
mptr = (LPBYTE)LocalAlloc( LMEM_FIXED, iCnt );
WideCharToMultiByte (CP_ACP, 0, string, -1, mptr,
iCnt, NULL, &fDefCharUsed );
rValue = atoi(mptr);
LocalFree( (HLOCAL)mptr );
return( rValue);
}
else
{
//on the safe side
if( iCnt >= INT_SIZE_LENGTH ) szAnsi[INT_SIZE_LENGTH-1] = 0;
return( atoi(szAnsi) );
}
}
else
{
WideCharToMultiByte (CP_ACP, 0, string, INT_SIZE_LENGTH,
szAnsi, INT_SIZE_LENGTH, NULL, &fDefCharUsed);
return (atoi (szAnsi));
}
#else
return (atoi (string));
#endif
} // end of MyAtoi()
LONG MyAtol (LPTSTR string)
{
CHAR szAnsi [LONG_SIZE_LENGTH];
BOOL fDefCharUsed;
#ifdef UNICODE
BOOL bDBCS;
LCID lcid = GetThreadLocale();
bDBCS = ( (PRIMARYLANGID(LANGIDFROMLCID(lcid)) == LANG_JAPANESE) ||
(PRIMARYLANGID(LANGIDFROMLCID(lcid)) == LANG_KOREAN) ||
(PRIMARYLANGID(LANGIDFROMLCID(lcid)) == LANG_CHINESE)
);
if (bDBCS)
{
int iCnt;
if( !(iCnt = WideCharToMultiByte (CP_ACP, 0, string, -1,
szAnsi, LONG_SIZE_LENGTH, NULL, &fDefCharUsed)) )
{
return FALSE;
}
//on the safe side
if( iCnt >= LONG_SIZE_LENGTH )
szAnsi[LONG_SIZE_LENGTH-1] = 0;
}
else
{
WideCharToMultiByte (CP_ACP, 0, string, LONG_SIZE_LENGTH,
szAnsi, LONG_SIZE_LENGTH, NULL, &fDefCharUsed);
}
return (atol (szAnsi));
#else
return (atol (string));
#endif
} // end of MyAtol()
//*****************************************************************
//
// MyItoa
//
// Purpose : To convert from ANSI to Unicode string after
// calling CRT itoa function.
//
//*****************************************************************
LPTSTR MyItoa (INT value, LPTSTR string, INT radix)
{
CHAR szAnsi [INT_SIZE_LENGTH];
#ifdef UNICODE
_itoa (value, szAnsi, radix);
MultiByteToWideChar (CP_ACP, MB_PRECOMPOSED, szAnsi, -1,
string, INT_SIZE_LENGTH);
#else
_itoa (value, string, radix);
#endif
return (string);
} // end of MyItoa()
LPTSTR MyUltoa (unsigned long value, LPTSTR string, INT radix)
{
CHAR szAnsi [LONG_SIZE_LENGTH];
#ifdef UNICODE
_ultoa (value, szAnsi, radix);
MultiByteToWideChar (CP_ACP, MB_PRECOMPOSED, szAnsi, -1,
string, LONG_SIZE_LENGTH);
#else
_ultoa (value, string, radix);
#endif
return (string);
} // end of MyUltoa()
//*****************************************************************
//
// MySplitpath
//
// Purpose : To convert from ANSI to Unicode string before
// calling CRT strtok function.
//
//*****************************************************************
VOID MySplitpath (LPTSTR path,
LPTSTR drive,
LPTSTR dir,
LPTSTR fname,
LPTSTR ext)
{
register LPTSTR p;
LPTSTR last_slash = NULL, dot = NULL;
WORD len;
/* we assume that the path argument has the following form, where any
* or all of the components may be missing.
*
* <drive><dir><fname><ext>
*
* and each of the components has the following expected form(s)
*
* drive:
* 0 to _MAX_DRIVE-1 characters, the last of which, if any, is a
* ':'
* dir:
* 0 to _MAX_DIR-1 characters in the form of an absolute path
* (leading '/' or '\') or relative path, the last of which, if
* any, must be a '/' or '\'. E.g -
* absolute path:
* \top\next\last\ ; or
* /top/next/last/
* relative path:
* top\next\last\ ; or
* top/next/last/
* Mixed use of '/' and '\' within a path is also tolerated
* fname:
* 0 to _MAX_FNAME-1 characters not including the '.' character
* ext:
* 0 to _MAX_EXT-1 characters where, if any, the first must be a
* '.'
*
*/
/* extract drive letter and :, if any */
if (*(path + _MAX_DRIVE - 2) == TEXT(':'))
{
if (drive)
{
_tcsncpy(drive, path, _MAX_DRIVE - 1);
*(drive + _MAX_DRIVE-1) = TEXT('\0');
}
path += _MAX_DRIVE - 1;
}
else if (drive)
*drive = TEXT('\0');
/* extract path string, if any. Path now points to the first character
* of the path, if any, or the filename or extension, if no path was
* specified. Scan ahead for the last occurence, if any, of a '/' or
* '\' path separator character. If none is found, there is no path.
* We will also note the last '.' character found, if any, to aid in
* handling the extension.
*/
for (last_slash = NULL, p = path; *p; p++)
{
if (*p == TEXT('/') || *p == TEXT('\\')) /* point to one beyond for later copy */
last_slash = p + 1;
else if (*p == TEXT('.'))
dot = p;
}
if (last_slash)
{
/* found a path - copy up through last_slash or max. characters
* allowed, whichever is smaller
*/
if (dir)
{
len = (WORD)__min((WORD)(last_slash - path) / sizeof(TCHAR), _MAX_DIR - 1);
_tcsncpy(dir, path, len);
*(dir + len) = TEXT('\0');
}
path = last_slash;
}
else if (dir) /* no path found */
*dir = TEXT('\0');
/* extract file name and extension, if any. Path now points to the
* first character of the file name, if any, or the extension if no
* file name was given. Dot points to the '.' beginning the extension,
* if any.
*/
if (dot && (dot >= path))
{
/* found the marker for an extension - copy the file name up to
* the '.'.
*/
if (fname)
{
len = (WORD)__min((WORD)(dot - path) / sizeof(TCHAR), _MAX_FNAME - 1);
_tcsncpy(fname, path, len);
*(fname + len) = TEXT('\0');
}
/* now we can get the extension - remember that p still points
* to the terminating nul character of path.
*/
if (ext)
{
len = (WORD)__min((WORD)(p - dot) / sizeof(TCHAR), _MAX_EXT - 1);
_tcsncpy(ext, dot, len);
*(ext + len) = TEXT('\0');
}
}
else
{
/* found no extension, give empty extension and copy rest of
* string into fname.
*/
if (fname)
{
len = (WORD)__min((WORD)(p - path) / sizeof (TCHAR), _MAX_FNAME - 1);
_tcsncpy(fname, path, len);
*(fname + len) = TEXT('\0');
}
if (ext)
*ext = TEXT('\0');
}
} // end of MySplitpath()
LPTSTR SkipProgramName (LPTSTR lpCmdLine)
{
LPTSTR p = lpCmdLine;
BOOL bInQuotes = FALSE;
//
// Skip executable name
//
for (p; *p; p = CharNext(p))
{
if ((*p == TEXT(' ') || *p == TEXT('\t')) && !bInQuotes)
break;
if (*p == TEXT('\"'))
bInQuotes = !bInQuotes;
}
while (*p == TEXT(' ') || *p == TEXT('\t'))
p++;
return (p);
}