316 lines
9 KiB
C
316 lines
9 KiB
C
|
/*************************************************************************
|
||
|
|
* *
|
||
|
|
* UTIL.C *
|
||
|
|
* *
|
||
|
|
* Copyright (C) Microsoft Corporation 1990-1994 *
|
||
|
|
* All Rights reserved. *
|
||
|
|
* *
|
||
|
|
**************************************************************************
|
||
|
|
* *
|
||
|
|
* Module Intent *
|
||
|
|
* General purpose routines *
|
||
|
|
* *
|
||
|
|
**************************************************************************
|
||
|
|
* *
|
||
|
|
* Current Owner: BinhN *
|
||
|
|
* *
|
||
|
|
**************************************************************************
|
||
|
|
* *
|
||
|
|
* Released by Development: (date) *
|
||
|
|
* *
|
||
|
|
*************************************************************************/
|
||
|
|
#include <mvopsys.h>
|
||
|
|
#include <mem.h>
|
||
|
|
#include <mvsearch.h>
|
||
|
|
#include "common.h"
|
||
|
|
|
||
|
|
#ifdef _DEBUG
|
||
|
|
static BYTE NEAR s_aszModule[] = __FILE__; /* Used by error return functions.*/
|
||
|
|
#endif
|
||
|
|
|
||
|
|
|
||
|
|
/*************************************************************************
|
||
|
|
*
|
||
|
|
* INTERNAL GLOBAL FUNCTIONS
|
||
|
|
* Those functions should be declared FAR to cause less problems with
|
||
|
|
* with inter-segment calls, unless they are explicitly known to be
|
||
|
|
* called from the same segment. Those functions should be declared
|
||
|
|
* in an internal include file
|
||
|
|
*************************************************************************/
|
||
|
|
PUBLIC BOOL PASCAL FAR StringDiff (LPB, LPB);
|
||
|
|
PUBLIC BOOL PASCAL FAR StringDiff2 (LPB, LPB);
|
||
|
|
PUBLIC WORD PASCAL FAR CbByteUnpack(LPDW, LPB);
|
||
|
|
PUBLIC int PASCAL FAR NCmpS (LPB, LPB);
|
||
|
|
PUBLIC int PASCAL FAR StrNoCaseCmp (LPB, LPB, WORD);
|
||
|
|
PUBLIC DWORD PASCAL FAR GetMacLong (LPB);
|
||
|
|
PUBLIC WORD PASCAL FAR GetMacWord (LPB);
|
||
|
|
PUBLIC DWORD PASCAL FAR SwapLong (DWORD);
|
||
|
|
PUBLIC WORD PASCAL FAR SwapWord (WORD);
|
||
|
|
PUBLIC int PASCAL FAR SwapBuffer (LPW, DWORD);
|
||
|
|
|
||
|
|
/*************************************************************************
|
||
|
|
* @doc INTERNAL
|
||
|
|
*
|
||
|
|
* @func BOOL PASCAL FAR | StringDiff |
|
||
|
|
* Given two pascal strings, this function will check to see if
|
||
|
|
* they are identical
|
||
|
|
*
|
||
|
|
* @parm LPB | lpStr1 |
|
||
|
|
* First Pascal string
|
||
|
|
*
|
||
|
|
* @parm LPB | lpStr2 |
|
||
|
|
* Second Pascal string
|
||
|
|
*
|
||
|
|
* @rdesc TRUE if the 2 strings are different, else FALSE
|
||
|
|
*
|
||
|
|
* @comm This function is for speed so no strings validity is checked
|
||
|
|
*************************************************************************/
|
||
|
|
PUBLIC BOOL PASCAL FAR StringDiff (LPB lpStr1, LPB lpStr2)
|
||
|
|
{
|
||
|
|
register BYTE cByte;
|
||
|
|
|
||
|
|
/* Check the strings' lengths. If they are different then done */
|
||
|
|
if ((cByte = *lpStr1++) != *lpStr2++)
|
||
|
|
return TRUE;
|
||
|
|
|
||
|
|
/* Check invidual bytes */
|
||
|
|
for (; cByte > 0; cByte--) {
|
||
|
|
if (*lpStr1++ != *lpStr2++)
|
||
|
|
return TRUE;
|
||
|
|
}
|
||
|
|
return FALSE;
|
||
|
|
}
|
||
|
|
|
||
|
|
|
||
|
|
/*************************************************************************
|
||
|
|
* @doc INTERNAL
|
||
|
|
*
|
||
|
|
* @func BOOL PASCAL FAR | StringDiff2 |
|
||
|
|
* Given two pascal strings, this function will check to see if
|
||
|
|
* they are identical. Both strings must have 2 byte size fields
|
||
|
|
*
|
||
|
|
* @parm LPB | lpStr1 |
|
||
|
|
* First Pascal string
|
||
|
|
*
|
||
|
|
* @parm LPB | lpStr2 |
|
||
|
|
* Second Pascal string
|
||
|
|
*
|
||
|
|
* @rdesc TRUE if the 2 strings are different, else FALSE
|
||
|
|
*
|
||
|
|
* @comm This function is for speed so no strings validity is checked
|
||
|
|
*************************************************************************/
|
||
|
|
PUBLIC BOOL PASCAL FAR StringDiff2 (LPB lpStr1, LPB lpStr2)
|
||
|
|
{
|
||
|
|
register WORD cByte;
|
||
|
|
|
||
|
|
/* Check the strings' lengths. If they are different then done */
|
||
|
|
// erinfox: GETWORD byte-swaps on Mac
|
||
|
|
if ((cByte = *(WORD UNALIGNED * UNALIGNED)(lpStr1)) != *(WORD UNALIGNED * UNALIGNED)(lpStr2))
|
||
|
|
return TRUE;
|
||
|
|
lpStr1 += sizeof (SHORT);
|
||
|
|
lpStr2 += sizeof (SHORT);
|
||
|
|
|
||
|
|
/* Check invidual bytes */
|
||
|
|
for (; cByte > 0; cByte--) {
|
||
|
|
if (*lpStr1++ != *lpStr2++)
|
||
|
|
return TRUE;
|
||
|
|
}
|
||
|
|
return FALSE;
|
||
|
|
}
|
||
|
|
|
||
|
|
|
||
|
|
/*************************************************************************
|
||
|
|
* @doc INTERNAL
|
||
|
|
*
|
||
|
|
* @func WORD PASCAL FAR | CbByteUnpack |
|
||
|
|
* Unpack a number
|
||
|
|
*
|
||
|
|
* @parm LPDW | lpdwOut |
|
||
|
|
* Pointer to result number
|
||
|
|
*
|
||
|
|
* @parm LPB | lpbIn |
|
||
|
|
* Input compacted sequence of bytes
|
||
|
|
*
|
||
|
|
* @rdesc The function will return the number of bytes scanned. The
|
||
|
|
* content of lpdwOut is updated
|
||
|
|
*************************************************************************/
|
||
|
|
PUBLIC WORD PASCAL FAR CbByteUnpack(LPDW lpdwOut, LPB lpbIn)
|
||
|
|
{
|
||
|
|
register int cb = 1;
|
||
|
|
register unsigned int cShift = 7;
|
||
|
|
DWORD dwSave = 0;
|
||
|
|
|
||
|
|
dwSave |= *lpbIn & 0x7F;
|
||
|
|
while (*lpbIn & 0x80) { /* Hi-bit set */
|
||
|
|
lpbIn++;
|
||
|
|
dwSave |= ((DWORD)(*lpbIn & 0x7F)) << cShift;
|
||
|
|
cb++;
|
||
|
|
cShift += 7;
|
||
|
|
}
|
||
|
|
*lpdwOut = dwSave;
|
||
|
|
return((WORD) cb);
|
||
|
|
}
|
||
|
|
|
||
|
|
|
||
|
|
/*************************************************************************
|
||
|
|
* @doc INTERNAL
|
||
|
|
*
|
||
|
|
* @func int PASCAL FAR | NCmpS |
|
||
|
|
* This function will compare two pascal strings
|
||
|
|
*
|
||
|
|
* @parm LPB | lpStr1 |
|
||
|
|
* First Pascal string
|
||
|
|
*
|
||
|
|
* @parm LPB | lpStr2 |
|
||
|
|
* Second Pascal string
|
||
|
|
*
|
||
|
|
* @rdesc The returned values are:
|
||
|
|
* < 0 : lpStr1 < lpStr2
|
||
|
|
* = 0 : if the strings are identical
|
||
|
|
* > 0 : lpStr1 > lpStr2
|
||
|
|
*
|
||
|
|
* @comm This function is for speed so no strings validity is checked
|
||
|
|
*************************************************************************/
|
||
|
|
PUBLIC int PASCAL FAR NCmpS (LPB lpStr1, LPB lpStr2)
|
||
|
|
{
|
||
|
|
register int wlen;
|
||
|
|
register int fRet;
|
||
|
|
|
||
|
|
/* Get the minimum length */
|
||
|
|
if ((fRet = *(LPUW)lpStr1 - *(LPUW)lpStr2) > 0)
|
||
|
|
wlen = *(LPUW)lpStr2;
|
||
|
|
else
|
||
|
|
wlen = *(LPUW)lpStr1;
|
||
|
|
|
||
|
|
/* Skip the lengths */
|
||
|
|
lpStr1 += sizeof(WORD);
|
||
|
|
lpStr2 += sizeof(WORD);
|
||
|
|
|
||
|
|
/* Start compare byte per byte */
|
||
|
|
for (; wlen > 0; wlen--, lpStr1++, lpStr2++) {
|
||
|
|
if (*lpStr1 != *lpStr2)
|
||
|
|
break;
|
||
|
|
}
|
||
|
|
|
||
|
|
if (wlen == 0) return fRet;
|
||
|
|
return (*lpStr1 - *lpStr2);
|
||
|
|
}
|
||
|
|
|
||
|
|
/*************************************************************************
|
||
|
|
* @doc INTERNAL
|
||
|
|
*
|
||
|
|
* @func int PASCAL FAR | StrNoCaseCmp |
|
||
|
|
* String compare with case insensitive
|
||
|
|
*
|
||
|
|
* @parm LPB | lpb1 |
|
||
|
|
* Pointer to string 1
|
||
|
|
*
|
||
|
|
* @parm LPB | lpb2 |
|
||
|
|
* Pointer to string 2
|
||
|
|
*
|
||
|
|
* @parm WORD | wLen |
|
||
|
|
* String length
|
||
|
|
*
|
||
|
|
* @rdesc 0 if the 2 strings match, 1 if not
|
||
|
|
*************************************************************************/
|
||
|
|
PUBLIC int PASCAL FAR StrNoCaseCmp (LPB lpb1, LPB lpb2, WORD wLen)
|
||
|
|
{
|
||
|
|
int fRet;
|
||
|
|
|
||
|
|
for (; wLen > 0; wLen--, lpb1++, lpb2++) {
|
||
|
|
if ((fRet = ((*lpb1 | 0x20) != (*lpb2 | 0x20))))
|
||
|
|
return fRet;
|
||
|
|
}
|
||
|
|
return 0;
|
||
|
|
}
|
||
|
|
|
||
|
|
PUBLIC VOID PASCAL FAR FreeHandle (HANDLE hd)
|
||
|
|
{
|
||
|
|
if (hd) {
|
||
|
|
_GLOBALUNLOCK(hd);
|
||
|
|
_GLOBALFREE(hd);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
#if defined(_DEBUG) && !defined(_MSDN) && !defined(MOSMAP)
|
||
|
|
/*************************************************************************
|
||
|
|
* @doc INTERNAL INDEX RETRIEVAL
|
||
|
|
*
|
||
|
|
* @func LPV PASCAL FAR | DebugGlobalLockedStructMemAlloc |
|
||
|
|
* This function allocates and return a pointer to a block of
|
||
|
|
* memory. The first element of the structure must be the handle
|
||
|
|
* to this block of memory
|
||
|
|
*
|
||
|
|
* @parm WORD | size |
|
||
|
|
* Size of the structure block.
|
||
|
|
*
|
||
|
|
* @parm LSZ | szFilename |
|
||
|
|
* Filename where the call is made
|
||
|
|
*
|
||
|
|
* @parm int | Line |
|
||
|
|
* Source line where the call is made
|
||
|
|
*
|
||
|
|
* @rdesc NULL if OOM, or pointer to the structure
|
||
|
|
*************************************************************************/
|
||
|
|
PUBLIC LPV PASCAL FAR DebugGlobalLockedStructMemAlloc (unsigned int size,
|
||
|
|
LSZ szFilename, WORD Line)
|
||
|
|
{
|
||
|
|
HANDLE hMem;
|
||
|
|
HANDLE FAR *lpMem;
|
||
|
|
|
||
|
|
if ((hMem = _GlobalAlloc(DLLGMEM_ZEROINIT, (DWORD)size,
|
||
|
|
szFilename, Line)) == 0)
|
||
|
|
return NULL;
|
||
|
|
|
||
|
|
lpMem = (HANDLE FAR *)_GLOBALLOCK(hMem);
|
||
|
|
*lpMem = hMem;
|
||
|
|
return (LPV)lpMem;
|
||
|
|
}
|
||
|
|
#endif
|
||
|
|
|
||
|
|
#if 0
|
||
|
|
/*************************************************************************
|
||
|
|
* @doc INTERNAL INDEX RETRIEVAL
|
||
|
|
*
|
||
|
|
* @func BOOL PASCAL FAR | MapErr |
|
||
|
|
* Map an MVFS error to index/search error
|
||
|
|
*
|
||
|
|
* @parm WORD | error |
|
||
|
|
* mvfs error
|
||
|
|
*
|
||
|
|
* @rdesc Return indexer/searcher error
|
||
|
|
*************************************************************************/
|
||
|
|
PUBLIC BOOL PASCAL FAR MapErr(WORD error)
|
||
|
|
{
|
||
|
|
switch (error) {
|
||
|
|
case ERR_FAILED:
|
||
|
|
return FAIL;
|
||
|
|
case ERR_SUCCESS:
|
||
|
|
return SUCCEED;
|
||
|
|
case ERR_EXIST:
|
||
|
|
return ERR_EXIST;
|
||
|
|
case ERR_INVALID:
|
||
|
|
case ERR_INVALID_HANDLE:
|
||
|
|
return ERR_INVALID_FS_FILE;
|
||
|
|
case ERR_BADARG:
|
||
|
|
case ERR_NOTSUPPORTED:
|
||
|
|
return ERR_BADARG;
|
||
|
|
case ERR_MEMORY:
|
||
|
|
return ERR_MEMORY;
|
||
|
|
case ERR_NOPERMISSION:
|
||
|
|
return ERR_CANTWRITE;
|
||
|
|
case ERR_BADVERSION:
|
||
|
|
return ERR_BADVERSION;
|
||
|
|
case ERR_DISKFULL:
|
||
|
|
return ERR_DISKFULL;
|
||
|
|
case ERR_NOHANDLE:
|
||
|
|
return ERR_NOHANDLE;
|
||
|
|
case ERR_BUFOVERFLOW:
|
||
|
|
return ERR_TREETOOBIG;
|
||
|
|
case ERR_ASSERT:
|
||
|
|
default:
|
||
|
|
return ERR_ASSERT;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
#endif
|