RetroZilla/xpinstall/cleanup/InstallCleanupOS2.cpp

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2015-10-21 05:03:22 +02:00
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*-
*
* ***** BEGIN LICENSE BLOCK *****
* Version: MPL 1.1/GPL 2.0/LGPL 2.1
*
* The contents of this file are subject to the Mozilla Public License Version
* 1.1 (the "License"); you may not use this file except in compliance with
* the License. You may obtain a copy of the License at
* http://www.mozilla.org/MPL/
*
* Software distributed under the License is distributed on an "AS IS" basis,
* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
* for the specific language governing rights and limitations under the
* License.
*
* The Original Code is Mozilla Communicator client code.
*
* The Initial Developer of the Original Code is
* Netscape Communications Corporation.
* Portions created by the Initial Developer are Copyright (C) 1998
* the Initial Developer. All Rights Reserved.
*
* Contributor(s):
* Don Bragg <dbragg@netscape.com>
* IBM Corp.
*
* Alternatively, the contents of this file may be used under the terms of
* either of the GNU General Public License Version 2 or later (the "GPL"),
* or the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
* in which case the provisions of the GPL or the LGPL are applicable instead
* of those above. If you wish to allow use of your version of this file only
* under the terms of either the GPL or the LGPL, and not to allow others to
* use your version of this file under the terms of the MPL, indicate your
* decision by deleting the provisions above and replace them with the notice
* and other provisions required by the GPL or the LGPL. If you do not delete
* the provisions above, a recipient may use your version of this file under
* the terms of any one of the MPL, the GPL or the LGPL.
*
* ***** END LICENSE BLOCK ***** */
#include "InstallCleanup.h"
#include "InstallCleanupDefines.h"
#define INCL_DOSERRORS
#define INCL_DOS
#include <os2.h>
#include <string.h>
#include <sys/stat.h>
//----------------------------------------------------------------------------
// Native OS/2 file deletion function
//----------------------------------------------------------------------------
int NativeDeleteFile(const char* aFileToDelete)
{
struct stat st;
if (stat(aFileToDelete, &st) != 0)
{
return DONE;// No file to delete, do nothing.
}
else
{
if(DosDelete(aFileToDelete) != NO_ERROR)
return TRY_LATER;
}
return DONE;
}
//----------------------------------------------------------------------------
// Native OS/2 file replacement function
//----------------------------------------------------------------------------
int NativeReplaceFile(const char* replacementFile, const char* doomedFile )
{
// replacement file must exist, doomed file doesn't have to
struct stat st;
if (stat(replacementFile, &st) != 0)
return DONE;
// don't have to do anything if the files are the same
if (stricmp(replacementFile, doomedFile) == 0)
return DONE;
if (DosDelete(doomedFile) != NO_ERROR)
{
if (stat(doomedFile, &st) == 0)
return TRY_LATER;
}
// doomedFile is gone move new file into place
if (DosMove(replacementFile, doomedFile) != NO_ERROR)
return TRY_LATER; // this shouldn't happen
return DONE;
}
int main(int argc, char *argv[], char *envp[])
{
HREG reg;
BOOL foundSpecialFile = FALSE;
struct stat st;
int status = DONE;
if ( REGERR_OK == NR_StartupRegistry())
{
char regFilePath[CCHMAXPATH];
strcpy(regFilePath, argv[0]);
char* lastSlash = strrchr(regFilePath, '\\');
if (lastSlash) {
// path does contain backslash
lastSlash++;
*lastSlash = 0; // strip off the executable name
} else {
// no backslash in path, just strip off everything
*regFilePath = 0;
}
strcat(regFilePath, CLEANUP_REGISTRY); // append reg file name
if (stat(regFilePath, &st) != 0)
strcpy(regFilePath, ""); // an empty reg file tells RegOpen to get the "default"
else
foundSpecialFile = TRUE;
if ( REGERR_OK == NR_RegOpen(regFilePath, &reg) )
{
int numAttempts = 0;
do
{
status = PerformScheduledTasks(reg);
if (status != DONE) {
DosSleep(1000); // Sleep for 1 second
numAttempts++;
}
} while ((status == TRY_LATER) && numAttempts <= 5);
NR_RegClose(&reg);
}
NR_ShutdownRegistry();
if (status == DONE) {
DosDelete(regFilePath);
}
}
return(0);
}