RetroZilla/xpinstall/wizard/windows/setup/version.c

/* ***** 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.
 *
 * The Initial Developer of the Original Code is
 * Netscape Communications Corp.
 * Portions created by the Initial Developer are Copyright (C) 2003
 * the Initial Developer. All Rights Reserved.
 *
 * Contributor(s):
 *   Sean Su <ssu@netscape.com>
 *
 * Alternatively, the contents of this file may be used under the terms of
 * either 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 "setup.h"
#include "windows.h"
#include "extern.h"
#include "extra.h"
#include "version.h"

BOOL GetFileVersion(LPSTR szFile, verBlock *vbVersion)
{
  UINT              uLen;
  UINT              dwLen;
  BOOL              bRv;
  DWORD             dwHandle;
  LPVOID            lpData;
  LPVOID            lpBuffer;
  VS_FIXEDFILEINFO  *lpBuffer2;

  vbVersion->ullMajor   = 0;
  vbVersion->ullMinor   = 0;
  vbVersion->ullRelease = 0;
  vbVersion->ullBuild   = 0;
  if(FileExists(szFile))
  {
    bRv    = TRUE;
    dwLen  = GetFileVersionInfoSize(szFile, &dwHandle);
    lpData = (LPVOID)malloc(sizeof(long)*dwLen);
    uLen   = 0;

    if(GetFileVersionInfo(szFile, dwHandle, dwLen, lpData) != 0)
    {
      if(VerQueryValue(lpData, "\\", &lpBuffer, &uLen) != 0)
      {
        lpBuffer2             = (VS_FIXEDFILEINFO *)lpBuffer;
        vbVersion->ullMajor   = HIWORD(lpBuffer2->dwFileVersionMS);
        vbVersion->ullMinor   = LOWORD(lpBuffer2->dwFileVersionMS);
        vbVersion->ullRelease = HIWORD(lpBuffer2->dwFileVersionLS);
        vbVersion->ullBuild   = LOWORD(lpBuffer2->dwFileVersionLS);
      }
    }
    free(lpData);
  }
  else
    /* File does not exist */
    bRv = FALSE;

  return(bRv);
}

void TranslateVersionStr(LPSTR szVersion, verBlock *vbVersion)
{
  LPSTR szNum1 = NULL;
  LPSTR szNum2 = NULL;
  LPSTR szNum3 = NULL;
  LPSTR szNum4 = NULL;

  szNum1 = strtok(szVersion, ".");
  szNum2 = strtok(NULL,      ".");
  szNum3 = strtok(NULL,      ".");
  szNum4 = strtok(NULL,      ".");

  vbVersion->ullMajor   = _atoi64(szNum1);
  vbVersion->ullMinor   = _atoi64(szNum2);
  vbVersion->ullRelease = _atoi64(szNum3);
  vbVersion->ullBuild   = _atoi64(szNum4);
}

int CompareVersion(verBlock vbVersionOld, verBlock vbVersionNew)
{
  if(vbVersionOld.ullMajor > vbVersionNew.ullMajor)
    return(4);
  else if(vbVersionOld.ullMajor < vbVersionNew.ullMajor)
    return(-4);

  if(vbVersionOld.ullMinor > vbVersionNew.ullMinor)
    return(3);
  else if(vbVersionOld.ullMinor < vbVersionNew.ullMinor)
    return(-3);

  if(vbVersionOld.ullRelease > vbVersionNew.ullRelease)
    return(2);
  else if(vbVersionOld.ullRelease < vbVersionNew.ullRelease)
    return(-2);

  if(vbVersionOld.ullBuild > vbVersionNew.ullBuild)
    return(1);
  else if(vbVersionOld.ullBuild < vbVersionNew.ullBuild)
    return(-1);

  /* the versions are all the same */
  return(0);
}