Sweden-Number/misc/file.c

364 lines
9.4 KiB
C

/************************************************************************
* FILE.C Copyright (C) 1993 John Burton
*
* File I/O routines for the Linux Wine Project.
*
* WARNING : Many options of OpenFile are not yet implemeted.
*
* NOV 93 Erik Bos (erik@(trashcan.)hacktic.nl
* - removed ParseDosFileName, and DosDrive structures.
* - structures dynamically configured at runtime.
* - _lopen modified to use GetUnixFileName.
*
* DEC 93 Erik Bos (erik@(trashcan.)hacktic.nl)
* - Existing functions modified to use dosfs functions.
* - Added _llseek, _lcreat, GetDriveType, GetTempDrive,
* GetWindowsDirectory, GetSystemDirectory, GetTempFileName.
*
************************************************************************/
#include <stdio.h>
#include <fcntl.h>
#include <limits.h>
#include <unistd.h>
#include <time.h>
#include <windows.h>
#include "prototypes.h"
/* #define DEBUG_FILE /* */
char WindowsDirectory[256], SystemDirectory[256], TempDirectory[256];
/***************************************************************************
_lopen
Emulate the _lopen windows call
***************************************************************************/
INT _lopen (LPSTR lpPathName, INT iReadWrite)
{
int handle;
char *UnixFileName;
#ifdef DEBUG_FILE
fprintf (stderr, "_lopen: open('%s', %X);\n", lpPathName, iReadWrite);
#endif
if ((UnixFileName = GetUnixFileName(lpPathName)) == NULL)
return HFILE_ERROR;
iReadWrite &= 0x000F;
handle = open (UnixFileName, iReadWrite);
#ifdef DEBUG_FILE
fprintf (stderr, "_lopen: open: %s (handle %d)\n", UnixFileName, handle);
#endif
if (handle == -1)
return HFILE_ERROR;
else
return handle;
}
/***************************************************************************
_lread
***************************************************************************/
INT _lread (INT hFile, LPSTR lpBuffer, INT wBytes)
{
int result;
#ifdef DEBUG_FILE
fprintf(stderr, "_lread: handle %d, buffer = %ld, length = %d\n",
hFile, (int) lpBuffer, wBytes);
#endif
result = read (hFile, lpBuffer, wBytes);
if (result == -1)
return HFILE_ERROR;
else
return result;
}
/****************************************************************************
_lwrite
****************************************************************************/
INT _lwrite (INT hFile, LPSTR lpBuffer, INT wBytes)
{
int result;
#if 0
#ifdef DEBUG_FILE
fprintf(stderr, "_lwrite: handle %d, buffer = %ld, length = %d\n",
hFile, (int) lpBuffer, wBytes);
#endif
#endif
result = write (hFile, lpBuffer, wBytes);
if (result == -1)
return HFILE_ERROR;
else
return result;
}
/***************************************************************************
_lclose
***************************************************************************/
INT _lclose (INT hFile)
{
#ifdef DEBUG_FILE
fprintf(stderr, "_lclose: handle %d\n", hFile);
#endif
if (close (hFile))
return HFILE_ERROR;
else
return 0;
}
/**************************************************************************
OpenFile
Warning: This is nearly totally untested. It compiles, that's it...
-SL 9/13/93
**************************************************************************/
INT OpenFile (LPSTR lpFileName, LPOFSTRUCT ofs, WORD wStyle)
{
int base, flags;
int handle;
#ifdef DEBUG_FILE
fprintf(stderr,"Openfile(%s,<struct>,%d) ",lpFileName,wStyle);
#endif
base = wStyle & 0xF;
flags = wStyle & 0xFFF0;
flags &= 0xFF0F; /* strip SHARE bits for now */
flags &= 0xD7FF; /* strip PROMPT & CANCEL bits for now */
flags &= 0x7FFF; /* strip REOPEN bit for now */
flags &= 0xFBFF; /* strib VERIFY bit for now */
if (flags & OF_CREATE)
{
base |= O_CREAT;
flags &= 0xEFFF;
}
#ifdef DEBUG_FILE
fprintf(stderr,"now %d,%d\n",base,flags);
#endif
if (flags & OF_EXIST)
{
printf("OpenFile // OF_EXIST '%s' !\n", lpFileName);
handle = _lopen (lpFileName, wStyle);
close(handle);
return handle;
}
if (flags & OF_DELETE)
{
printf("OpenFile // OF_DELETE '%s' !\n", lpFileName);
return unlink(lpFileName);
}
else
{
int handle;
char *UnixFileName;
if ((UnixFileName = GetUnixFileName(lpFileName)) == NULL)
return HFILE_ERROR;
handle = open(UnixFileName, base, 0666);
#ifdef DEBUG_FILE
fprintf(stderr, "OpenFile: returning %04.4x\n", handle);
#endif
if (handle == -1)
return HFILE_ERROR;
else
return handle;
}
}
/**************************************************************************
SetHandleCount
Changes the number of file handles available to the application. Since
Linux isn't limited to 20 files, this one's easy. - SL
**************************************************************************/
#if !defined (OPEN_MAX)
/* This one is for the Sun */
#define OPEN_MAX _POSIX_OPEN_MAX
#endif
WORD SetHandleCount (WORD wNumber)
{
printf("SetHandleCount(%d)\n",wNumber);
return((wNumber<OPEN_MAX) ? wNumber : OPEN_MAX);
}
/***************************************************************************
_llseek
***************************************************************************/
LONG _llseek (INT hFile, LONG lOffset, INT nOrigin)
{
int origin;
#ifdef DEBUG_FILE
fprintf(stderr, "_llseek: handle %d, offset %ld, origin %d\n", hFile, lOffset, nOrigin);
#endif
switch (nOrigin) {
case 1: origin = SEEK_CUR;
break;
case 2: origin = SEEK_END;
break;
default: origin = SEEK_SET;
break;
}
return ( lseek(hFile, lOffset, origin) );
}
/***************************************************************************
_lcreat
***************************************************************************/
INT _lcreat (LPSTR lpszFilename, INT fnAttribute)
{
int handle;
char *UnixFileName;
#ifdef DEBUG_FILE
fprintf(stderr, "_lcreat: filename %s, attributes %d\n",lpszFilename,
fnAttribute);
#endif
if ((UnixFileName = GetUnixFileName(lpszFilename)) == NULL)
return HFILE_ERROR;
handle = open (UnixFileName, O_CREAT | O_TRUNC | O_WRONLY, 426);
if (handle == -1)
return HFILE_ERROR;
else
return handle;
}
/***************************************************************************
GetDriveType
***************************************************************************/
UINT GetDriveType(INT drive)
{
#ifdef DEBUG_FILE
fprintf(stderr,"GetDriveType %c:\n",'A'+drive);
#endif
if (!DOS_ValidDrive(drive))
return DRIVE_DOESNOTEXIST;
if (drive == 0 || drive == 1)
return DRIVE_REMOVABLE;
return DRIVE_FIXED;
}
/***************************************************************************
GetTempDrive
***************************************************************************/
BYTE GetTempDrive(BYTE chDriveLetter)
{
#ifdef DEBUG_FILE
fprintf(stderr,"GetTempDrive (%d)\n",chDriveLetter);
#endif
return('C');
}
/***************************************************************************
GetWindowsDirectory
***************************************************************************/
UINT GetWindowsDirectory(LPSTR lpszSysPath, UINT cbSysPath)
{
if (cbSysPath < strlen(WindowsDirectory))
*lpszSysPath = 0;
else
strcpy(lpszSysPath, WindowsDirectory);
#ifdef DEBUG_FILE
fprintf(stderr,"GetWindowsDirectory (%s)\n",lpszSysPath);
#endif
ChopOffSlash(lpszSysPath);
return(strlen(lpszSysPath));
}
/***************************************************************************
GetSystemDirectory
***************************************************************************/
UINT GetSystemDirectory(LPSTR lpszSysPath, UINT cbSysPath)
{
if (cbSysPath < strlen(SystemDirectory))
*lpszSysPath = 0;
else
strcpy(lpszSysPath, SystemDirectory);
#ifdef DEBUG_FILE
fprintf(stderr,"GetSystemDirectory (%s)\n",lpszSysPath);
#endif
ChopOffSlash(lpszSysPath);
return(strlen(lpszSysPath));
}
/***************************************************************************
GetTempFileName
***************************************************************************/
INT GetTempFileName(BYTE bDriveLetter, LPCSTR lpszPrefixString, UINT uUnique, LPSTR lpszTempFileName)
{
int unique;
int handle;
char tempname[256];
if (uUnique == 0)
unique = time(NULL)%99999L;
else
unique = uUnique%99999L;
strcpy(tempname,lpszPrefixString);
tempname[3]='\0';
sprintf(lpszTempFileName,"%s\\%s%d.tmp", TempDirectory, tempname,
unique);
ToDos(lpszTempFileName);
#ifdef DEBUG_FILE
fprintf(stderr,"GetTempFilename: %c %s %d => %s\n",bDriveLetter,
lpszPrefixString,uUnique,lpszTempFileName);
#endif
if ((handle = _lcreat (lpszTempFileName, 0x0000)) == -1) {
fprintf(stderr,"GetTempFilename: can't create temp file '%s' !\n", lpszTempFileName);
}
else
close(handle);
return unique;
}
/***************************************************************************
SetErrorMode
***************************************************************************/
WORD SetErrorMode(WORD x)
{
fprintf(stderr,"wine: SetErrorMode %4x (ignored)\n",x);
}
/***************************************************************************
_hread
***************************************************************************/
long _hread(int hf, void FAR *hpvBuffer, long cbBuffer)
{
return read(hf, hpvBuffer, cbBuffer);
}
/***************************************************************************
_hwrite
***************************************************************************/
long _hwrite(int hf, const void FAR *hpvBuffer, long cbBuffer)
{
return write(hf, hpvBuffer, cbBuffer);
}