665 lines
20 KiB
C
665 lines
20 KiB
C
/*
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* pmdos.c
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*
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* Copyright (c) 1991, Microsoft Corporation
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*
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* DESCRIPTION
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*
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* This file is for support of program manager under NT Windows.
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* This file is/was ported from pmdos.asm (program manager).
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* It was in x86 asm code, and now is in ansi C.
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* Some functions will be removed, due to they are only needed
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* by DOS Windows.
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*
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* MODIFICATION HISTORY
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* Initial Version: x/x/90 Author Unknown, since he didn't feel
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* like commenting the code...
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*
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* NT 32b Version: 1/9/91 Jeff Pack
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* Intitial port to begin.
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*
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* WARNING: since this is NOT for DOS, I'm making it soley 32bit aware.
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* Following functions not ported
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* IsRemovable() is in pmcomman.c (already ifdef'd in asm code)
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* IsRemote() is in pmcomman.c (ditto!)
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*
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*/
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#ifndef ORGCODE
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#include <io.h>
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#include <string.h>
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#include <ctype.h>
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#endif
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#include "windows.h"
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#include <port1632.h>
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BOOL PathType(LPSTR);
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DWORD FileTime(HFILE);
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DWORD GetDOSErrorCode(VOID);
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int GetCurrentDrive(VOID);
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int w_GetCurrentDirectory(int, LPSTR);
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int w_SetCurrentDirectory(LPSTR);
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int DosDelete(LPSTR);
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LPSTR lmemmove(LPSTR, LPSTR, WORD);
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BOOL FAR PASCAL IsRemoteDrive(int);
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BOOL FAR PASCAL IsRemovableDrive(int);
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#define LOCALBUFFERSIZE 128
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/*** PathType -- Determines if string denotes a directory or not.
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*
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*
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*
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* BOOL PathType(LPSTR pszFileString)
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*
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* ENTRY - LPSTR pszFileString - pointer to string to use to determine if directory
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* or not.
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* window, with focus.
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* EXIT - int iReturnValue - 2 = is directory 1 = Is Not directory
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*
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* SYNOPSIS - This function takes a pointer to a string, calls OS to determine
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* if string is, or is not a directory.
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* WARNINGS - Cna't even see where this is called!
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* EFFECTS -
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*
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*/
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BOOL PathType(LPSTR lpszFileString)
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{
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LPSTR lpszLocalBuffer; /*local buffer for AnsiToOem()*/
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DWORD dwReturnedAttributes;
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DWORD nBufferLength;
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nBufferLength = strlen(lpszFileString) + 1;
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/*alloc local, non-moveable, zero filled buffer*/
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lpszLocalBuffer = LocalAlloc(LMEM_ZEROINIT, nBufferLength);
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if(lpszLocalBuffer == NULL){
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#if DBG
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OutputDebugString("<PathType> LocalAlloc FAILed\n");
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#endif /* DBG */
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return 0;
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}
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AnsiToOem(lpszFileString, lpszLocalBuffer);
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/*get attributes of filestring*/
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dwReturnedAttributes = GetFileAttributes(lpszLocalBuffer);
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if(dwReturnedAttributes == -1){
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#if DBG
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OutputDebugString("<PathType> - GetFileAttributes() FAILed!\n");
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#endif /* DBG */
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LocalFree(lpszLocalBuffer);
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return(0);
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}
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else{
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/*and with directory attribute*/
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dwReturnedAttributes = dwReturnedAttributes & FILE_ATTRIBUTE_DIRECTORY;
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switch(dwReturnedAttributes){
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case FILE_ATTRIBUTE_DIRECTORY:
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LocalFree(lpszLocalBuffer);
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return(2);
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break;
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default:
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LocalFree(lpszLocalBuffer);
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return(1);
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}
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}
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}
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/*** FileTime -- Gets time of last modification.
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*
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*
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*
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* DWORD FileTime(HFILE hFile)
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*
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* ENTRY - int hFile - file handle to access
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*
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* EXIT - LPWORD - which is gotten from lpTimeStamp = 0 (ERROR).
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* or lpTimeStamp != 0 (value of timestamp)
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*
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* SYNOPSIS - calls GetFileTime() to get timestamp. If error, then
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* lpTimeStamp = 0, else contains TimeStamp for file.
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* WARNINGS -
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* EFFECTS -
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*
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*/
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DWORD FileTime(
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HFILE hFile)
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{
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BOOL bReturnCode;
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FILETIME CreationTime;
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FILETIME LastAccessTime;
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FILETIME LastWriteTime;
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WORD FatTime = 0;
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WORD FatDate;
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bReturnCode = GetFileTime(LongToHandle(hFile), &CreationTime, &LastAccessTime,
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&LastWriteTime);
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/*
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* Test return code
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*/
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if (bReturnCode == FALSE) {
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return 0; /*set to zero, for error*/
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}
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/*
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* Now convert 64bit time to DOS 16bit time
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*/
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FileTimeToDosDateTime( &LastWriteTime, &FatDate, &FatTime);
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return FatTime;
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}
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/*** IsReadOnly -- determines if file is readonly or not.
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*
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*
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*
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* BOOL IsReadOnly(LPSTR lpszFileString)
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*
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* ENTRY - LPSTR lpszFileString - file name to use
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*
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* EXIT - BOOL xxx - returns (0) = not readonly (1) = read only
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* or lpTimeStamp != 0 (value of timestamp)
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*
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* SYNOPSIS - calls GetAttributes, then tests if file is read only.
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* WARNINGS -
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* EFFECTS -
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*
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*/
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BOOL IsReadOnly(LPSTR lpszFileString)
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{
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DWORD dwReturnedAttributes;
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LPSTR lpszLocalBuffer; /*local buffer for AnsiToOem()*/
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DWORD nBufferLength;
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nBufferLength = strlen(lpszFileString) + 1;
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/*alloc local, non-moveable, zero filled buffer*/
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lpszLocalBuffer = LocalAlloc(LMEM_ZEROINIT, nBufferLength);
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if(lpszLocalBuffer == NULL){
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#if DBG
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OutputDebugString("<IsReadOnly> LocalAlloc FAILed\n");
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#endif /* DBG */
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return 0;
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}
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AnsiToOem(lpszFileString, lpszLocalBuffer);
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/*get attributes of filestring*/
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dwReturnedAttributes = GetFileAttributes(lpszLocalBuffer);
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if(dwReturnedAttributes == -1){
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#if DBG
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OutputDebugString("<IsReadOnly> - GetFileAttributes() FAILed!\n");
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#endif /* DBG */
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LocalFree(lpszLocalBuffer);
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return FALSE;
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} else {
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/*AND with read_only attribute*/
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dwReturnedAttributes = dwReturnedAttributes & FILE_ATTRIBUTE_READONLY;
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switch(dwReturnedAttributes){
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case FILE_ATTRIBUTE_READONLY:
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LocalFree(lpszLocalBuffer);
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return TRUE;
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break;
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default:
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LocalFree(lpszLocalBuffer);
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return FALSE;
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}
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}
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}
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/*** GetDOSErrorCode -- returns extended error code
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*
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*
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*
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* DWORD GetDOSErrorCode(VOID)
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*
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* ENTRY - VOID
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*
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* EXIT - DWORD - returned extended code.
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*
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* SYNOPSIS - calls GetLastError() to get error code from OS
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* WARNINGS -
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* EFFECTS -
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*
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*/
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DWORD GetDOSErrorCode(VOID)
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{
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return( (int) GetLastError());
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/*BUG BUG, pmgseg.c uses this from _lcreat() to determine if returned
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5 (access denied) or 13 (invalid_data). So this need be tested
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to see if win32 returns these.*/
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}
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/*** GetCurrentDrive -- get current drive number.
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*
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*
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*
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* int GetCurrentDrive(VOID)
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*
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* ENTRY - VOID
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*
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* EXIT - int CurrentDrive - drive number of current drive (0=a, etc).
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*
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* SYNOPSIS - calls GetCurrentDirectory, must parse returned string
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* for either drive letter, or UNC path. If UNC I gotta
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* somehow, covert UNC path to drive letter to drive number.
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* WARNINGS -
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* EFFECTS -
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*
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*/
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int GetCurrentDrive(VOID)
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{
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/*BUG BUG, not DBCS aware!*/
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DWORD nBufferLength = LOCALBUFFERSIZE;
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DWORD dwReturnCode;
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LPSTR lpszLocalBuffer;
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int iDriveNumber;
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/*alloc local, non-moveable, zero filled buffer*/
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lpszLocalBuffer = LocalAlloc(LMEM_ZEROINIT, nBufferLength);
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if(lpszLocalBuffer == NULL){
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#if DBG
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OutputDebugString("<GetCurrentDrive> LocalAlloc FAILed\n");
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#endif /* DBG */
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return 0;
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}
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GetCurDrive1:
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dwReturnCode = GetCurrentDirectory(nBufferLength, lpszLocalBuffer);
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/*failed for reason other than bufferlength too small*/
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if(dwReturnCode == 0){
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#if DBG
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OutputDebugString("<GetCurrentDrive> GetCurrentDirectory() FAILed\n");
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#endif /* DBG */
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return 0;
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}
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/*test for success, if dwReturnCode is > buffer, then need increase buffer*/
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if(dwReturnCode > nBufferLength){
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lpszLocalBuffer = LocalReAlloc(lpszLocalBuffer, nBufferLength + LOCALBUFFERSIZE, LMEM_ZEROINIT | LMEM_MOVEABLE);
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if(lpszLocalBuffer == NULL){
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#if DBG
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OutputDebugString("<GetCurrentDrive> LocalAlloc FAILed\n");
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#endif /* DBG */
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return 0;
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}
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else{
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nBufferLength += LOCALBUFFERSIZE;
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}
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goto GetCurDrive1;
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}
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/*finally lpszLocalBuffer has string containing current directory*/
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/* now must parse string for ":" or "\\" for drive letter or UNC*/
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/*if : then get drive letter, and convert to number a=0, b=1, etc.*/
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/*if \\ then gotta enumerate net drives, to learn what drive letter*/
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/*corresponds to that UNC path*/
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/*check for drive letter*/
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if(lpszLocalBuffer[1] == ':'){
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/*is drive letter, proceed*/
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if(isupper(lpszLocalBuffer[0])){
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iDriveNumber = lpszLocalBuffer[0] - 'A'; /*convert letter > number*/
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}
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else{
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iDriveNumber = lpszLocalBuffer[0] - 'a'; /*convert letter > number*/
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}
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}
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else{
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/*must be UNC path*/
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/*BUG BUG need write code to convert UNC path */
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#if DBG
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OutputDebugString("<GetCurrentDrive> Got UNC path, didnt expect, and no code!\n");
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#endif /* DBG */
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}
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LocalFree(lpszLocalBuffer);
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return(iDriveNumber);
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}
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/*** SetCurrentDrive -- set current drive.
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*
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*
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*
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* int SetCurrentDrive(int iDrive)
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*
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* ENTRY - int iDrive - drive number to set as current drive
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*
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* EXIT - int xxx - under DOS would have returned # of logical drives.
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* I can do this, but it's not used, if fact, no error
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* checks are done on this return value.
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*
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* SYNOPSIS - calls SetCurrentDirectory to set current drive.
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* WARNINGS - ALWAYS sets to root directory, since can't get cur dir
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* on other than current working drive.
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* EFFECTS -
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*
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*/
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int SetCurrentDrive(int iDrive)
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{
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char cLocalBuffer[LOCALBUFFERSIZE] = "C:\\";
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char cDriveLetter;
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/*convert drive number (zero based) to letter*/
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cDriveLetter = (char) iDrive + (char)'A';
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cLocalBuffer[0] = cDriveLetter; /*set new drive in string*/
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if(!SetCurrentDirectory(cLocalBuffer)){
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/*call failed*/
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#if DBG
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OutputDebugString("<SetCurrentDrive> SetCurrentDirectory FAILed!\n");
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#endif /* DBG */
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return 0;
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}
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return(0);
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}
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/*** w_GetCurrentDirectory -- GetCurrent Working Directory
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*
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*
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*
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* int w_GetCurrentDirectory(int iDrive, LPSTR lpszCurrentDirectory)
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*
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* ENTRY - int iDrive - drive number to use as current drive.
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* LPSTR lpszCurrentDirectory - pointer to return data to.
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*
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* EXIT - int iReturnCode - returns (0) if success
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* LPSTR lpszCurrentDirectory - has curretn directory.
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*
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* SYNOPSIS - calls GetCurrentDirectory to get current directory.
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* the original asm code, checked idrive for zero, if so
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* then calls GetCurrentDrive. Under win32, is not neccessary,
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* since GetCUrrentDirectory() returns current drive.
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* Since it checks this, it means then that other than current
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* drive can be checked, yet win32 doesnt allow this, so I have to
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* code in a debug check, if iDrive != current drive.
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* WARNINGS - win32 doesn't allow multiple cur dirs across drives.
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* EFFECTS -
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*
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*/
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int w_GetCurrentDirectory(int iDrive, LPSTR lpszCurrentDirectory)
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{
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/*first see if iDrive == 0, if so then only need call GetCurrentDirectory*/
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/*if non-zero, then could be current drive, OR another drive.*/
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/*THIS IS NOT ALLOWED!*/
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/*BUG BUG, not DBCS aware!*/
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DWORD nBufferLength = LOCALBUFFERSIZE;
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DWORD dwReturnCode;
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LPSTR lpszLocalBuffer;
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int iDriveNumber;
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/*alloc local, non-moveable, zero filled buffer*/
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lpszLocalBuffer = LocalAlloc(LMEM_ZEROINIT, nBufferLength);
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if(lpszLocalBuffer == NULL){
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#if DBG
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OutputDebugString("<w_GetCurrentDirectory> LocalAlloc FAILed\n");
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#endif /* DBG */
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return(1);
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}
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GetCurDir1:
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dwReturnCode = GetCurrentDirectory(nBufferLength, lpszLocalBuffer);
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/*failed for reason other than bufferlength too small*/
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if(dwReturnCode == 0){
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#if DBG
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OutputDebugString("<w_GetCurrentDirectory> GetCurrentDirectory() FAILed\n");
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#endif /* DBG */
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LocalFree(lpszLocalBuffer);
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return(1);
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}
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/*test for success, if dwReturnCode is > buffer, then need increase buffer*/
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if(dwReturnCode > nBufferLength){
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lpszLocalBuffer = LocalReAlloc(lpszLocalBuffer, nBufferLength + LOCALBUFFERSIZE, LMEM_ZEROINIT | LMEM_MOVEABLE);
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if(lpszLocalBuffer == NULL){
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#if DBG
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OutputDebugString("<w_GetCurrentDirectory> LocalAlloc FAILed\n");
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#endif /* DBG */
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LocalFree(lpszLocalBuffer);
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return(1);
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}
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else{
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nBufferLength += LOCALBUFFERSIZE;
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}
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goto GetCurDir1;
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}
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/*now I have string that contains EITHER current drive in a drive letter*/
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/*or current drive by a UNC name*/
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/*BUG BUG UNC name check uncoded, since I have to go from UNC name to drive letter*/
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/*debug code, to make sure iDrive == current drive*/
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/*see if drive letter based string*/
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if(lpszLocalBuffer[1] == ':'){
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/*is Drive letter based!*/
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/*never know case of returned string from kernel*/
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if(isupper(lpszLocalBuffer[0])){
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iDriveNumber = lpszLocalBuffer[0] - 'A';
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}
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else{
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iDriveNumber = lpszLocalBuffer[0] - 'a';
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}
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/*DEBUG make sure that we are indeed setting a new drive */
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/* remember that iDrive == 0 means use current drive!*/
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if(iDrive == iDriveNumber || iDrive == 0){
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/*is current drive and drive letter based, set to after "x:\"*/
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strcpy(lpszCurrentDirectory, lpszLocalBuffer); /*copy directory to pointer*/
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}
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else{ /* is different drive, or not using current drive (== 0)*/
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SetCurrentDrive(iDriveNumber); /*set new drive "<iDrive>:\" */
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/*now that new drive/dir is set, return current dir*/
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/* BUG BUG, because setting drive, overides cur dir, I return*/
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/* "<newdrive>:\" */
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strcpy(lpszCurrentDirectory, "c:\\");
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lpszCurrentDirectory[0] = (char) (iDriveNumber + 'a'); /*set new drive*/
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}
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}
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else{
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/*is NOT drive letter based*/
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/* BUG BUG need write code to parse UNC, and return only the path*/
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/* BUG BUGalso need check to see if iDrive == UNC drive, so I gotta*/
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/* convert UNC path to drive, and compare*/
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#if DBG
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OutputDebugString("<w_GetCurrentDirectory> Took path for UNC, and no code!\n");
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#endif /* DBG */
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LocalFree(lpszLocalBuffer);
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return(1);
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}
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LocalFree(lpszLocalBuffer);
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return(0); /*success*/
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}
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/*** w_SetCurrentDirectory -- SetCurrent Working Directory and drive
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*
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* int w_SetCurrentDirectory(LPSTR lpszCurrentDirectory)
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*
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* ENTRY - LPSTR lpszCurrentDirectory - string to set current drive/dir to
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*
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* EXIT - int iReturnCode - returns (0) if success
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*
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* SYNOPSIS - calls SetCurrentDirectory to set current directory and drive.
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* WARNINGS -
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* EFFECTS -
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*
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*/
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int w_SetCurrentDirectory(LPSTR lpszCurrentDirectory)
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{
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DWORD dwReturnCode;
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dwReturnCode = SetCurrentDirectory(lpszCurrentDirectory);
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if(dwReturnCode == 0){
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#if DBG
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OutputDebugString("<w_SetCurrentDirectory> SetCurrentDirectory FAILed!\n");
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#endif /* DBG */
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return(1);
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}
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return(0); /*success*/
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}
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/*** DosDelete -- Delete named file.
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*
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* int DosDelete(LPSTR lpszFileToDelete)
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*
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* ENTRY - LPSTR lpszFileToDelete - filename to delete.
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*
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* EXIT - int xxx - returns (0) if success
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*
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* SYNOPSIS - calls win32 DeleteFile.
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* WARNINGS -
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* EFFECTS -
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*
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*/
|
|
|
|
int DosDelete(LPSTR lpszFileToDelete)
|
|
{
|
|
|
|
BOOL bReturnCode;
|
|
LPSTR lpszLocalBuffer; /*local buffer for AnsiToOem()*/
|
|
DWORD nBufferLength;
|
|
|
|
nBufferLength = strlen(lpszFileToDelete) + 1;
|
|
/*alloc local, non-moveable, zero filled buffer*/
|
|
lpszLocalBuffer = LocalAlloc(LMEM_ZEROINIT, nBufferLength);
|
|
if(lpszLocalBuffer == NULL){
|
|
#if DBG
|
|
OutputDebugString("<DosDelete> LocalAlloc FAILed\n");
|
|
#endif /* DBG */
|
|
return 1;
|
|
}
|
|
|
|
|
|
AnsiToOem(lpszFileToDelete, lpszLocalBuffer);
|
|
|
|
|
|
bReturnCode = DeleteFile(lpszLocalBuffer);
|
|
LocalFree(lpszLocalBuffer);
|
|
if(bReturnCode){
|
|
return(0);
|
|
}
|
|
else{
|
|
return(1);
|
|
}
|
|
}
|
|
|
|
/*** DosRename -- Rename file.
|
|
*
|
|
* int DosRename(LPSTR lpszOrgFileName, LPSTR lpszNewFileName)
|
|
*
|
|
* ENTRY - LPSTR lpszOrgFileName - origianl filename.
|
|
* LPSTR lpszNewFileName - New filename.
|
|
*
|
|
* EXIT - int xxx - returns (0) if success
|
|
*
|
|
* SYNOPSIS - calls win32 MoveFile.
|
|
* WARNINGS -
|
|
* EFFECTS -
|
|
*
|
|
*/
|
|
|
|
int DosRename(LPSTR lpszOrgFileName, LPSTR lpszNewFileName)
|
|
{
|
|
|
|
BOOL bReturnCode;
|
|
LPSTR lpszLocalBuffer; /*local buffer for AnsiToOem()*/
|
|
LPSTR lpszLocalBuffer1; /*local buffer for AnsiToOem()*/
|
|
DWORD nBufferLength;
|
|
DWORD nBufferLength1;
|
|
|
|
nBufferLength = strlen(lpszOrgFileName) + 1;
|
|
nBufferLength1 = strlen(lpszNewFileName) + 1;
|
|
/*alloc local, non-moveable, zero filled buffer*/
|
|
lpszLocalBuffer = LocalAlloc(LMEM_ZEROINIT, nBufferLength);
|
|
if(lpszLocalBuffer == NULL){
|
|
#if DBG
|
|
OutputDebugString("<DosRename> LocalAlloc FAILed\n");
|
|
#endif /* DBG */
|
|
return 1;
|
|
}
|
|
lpszLocalBuffer1 = LocalAlloc(LMEM_ZEROINIT, nBufferLength1);
|
|
if(lpszLocalBuffer1 == NULL){
|
|
OutputDebugString("<DosRename> LocalAlloc FAILed\n");
|
|
}
|
|
|
|
|
|
AnsiToOem(lpszOrgFileName, lpszLocalBuffer);
|
|
AnsiToOem(lpszNewFileName, lpszLocalBuffer1);
|
|
|
|
/*rename file*/
|
|
bReturnCode = MoveFile(lpszLocalBuffer, lpszLocalBuffer1);
|
|
|
|
LocalFree(lpszLocalBuffer);
|
|
LocalFree(lpszLocalBuffer1);
|
|
|
|
if(bReturnCode){
|
|
return(0);
|
|
}
|
|
else{
|
|
return(1);
|
|
}
|
|
}
|
|
|
|
/*** lmemmove -- move memory.
|
|
*
|
|
* LPSTR lmemmove(LPSTR lpszDst, LPSTR lpszSrc, WORD wCount)
|
|
*
|
|
* ENTRY - LPSTR lpszDst - destination
|
|
* LPSTR lpszSrc - source
|
|
* WORD wCount - number of chars to move.
|
|
*
|
|
* EXIT - LPSTR lpszDst - returns lpszDst.
|
|
*
|
|
* SYNOPSIS - calls c runtime. Done cause they hacked lmemove to asm.
|
|
* WARNINGS -
|
|
* EFFECTS -
|
|
*
|
|
*/
|
|
|
|
LPSTR lmemmove(LPSTR lpszDst, LPSTR lpszSrc, WORD wCount)
|
|
{
|
|
|
|
|
|
return(memmove(lpszDst, lpszSrc, wCount));
|
|
|
|
}
|