/*
 * Help Access Library 
 * A Library to access the contents of Windows Help files.
 *
 * Copyright (C) 1995-2000 Bernd Herd, http://www.herdsoft.com
 *                                                                  
 * This program is free software; you can redistribute it and/or    
 * modify it under the terms of the GNU General Public License as   
 * published by the Free Software Foundation; either version 2 of   
 * the License.              
 *                                                                  
 * This program is distributed in the hope that it will be useful,  
 * but WITHOUT ANY WARRANTY; without even the implied warranty of   
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the    
 * GNU General Public License for more details.                     
 *                                                                  
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software      
 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.        
 */
/* ISSECOND.C -----------------------------------------
 *
 * @doc
 * @module ISSECOND.C |
 * Test validity of Secondary Window Names
 *
 * Help File Acces Project.
 *
 *-----------------------------------------------------*/

#include <windows.h>
#include <windowsx.h>
#include <time.h>
#include <stdio.h>
#include <string.h>
#include "hlpacces.h"


/* Help Compiler 3.1 System record. Multiple records possible */
#pragma pack(1)
typedef struct SYSTEMRECORD 
{
    WORD    RecordType;   /* Type of Data in record      */
    WORD    DataSize;     /* Size of RData               */
} PACKED SYSTEMRECORD, NEAR *NPSYSTEMRECORD;
#pragma pack()


/* @func BOOL | IsSecondaryWindow |
 *
 * Tests if the given Help-File contains a Definition of the diven Secondary Window-Name.
 *
 * @rdesc Indicates if the Window-Definition exists
 * @flag TRUE | The file contains such a Window-Definition
 * @flag FALSE| The file does not exist, is no help file or does not contain such a Window-Definition
 * @comm Lower/Upper case do not care.
 * 
 */
BOOL WINAPI DLLEXP IsSecondaryWindow(
        LPCSTR FileName,                // @parm Filename of the Help-File
        LPCSTR WindowName)              // @parm name of the secondary Window
{ NPIFS          ifs     = IFSOpen    (FileName);
  NPIFSFILE      ifsfile;
  BOOL           rtn     = FALSE;
  SYSTEMHEADER   SysHeader;              /* Global System Header Record   */
  SYSTEMRECORD   SystemRec;
  NPSTR          ptr;
  SECWINDOW NEAR *SWin;     /* Secondary Window record */

  if (ifs)
  { ifsfile = IFSOpenFile(ifs, "|SYSTEM");
     if (ifsfile)
     {
       //---------- Read in System-Header ------------------------
       IFSReadFile(ifsfile, &SysHeader, sizeof(SYSTEMHEADER));

       //---------- Read Records ---------------------------------
       while (!rtn &&
              sizeof(SYSTEMRECORD) ==IFSReadFile(ifsfile, &SystemRec, sizeof(SYSTEMRECORD)) &&
              NULL                 !=(ptr=(NPSTR) LocalAlloc(LPTR,     SystemRec.DataSize)) &&
              SystemRec.DataSize   ==IFSReadFile(ifsfile, ptr, SystemRec.DataSize)
              )
       {  SWin = (SECWINDOW *) ptr;

          if (SystemRec.RecordType == 0x0006)
             rtn = !stricmp((NPSTR) SWin->Name, WindowName);

          LocalFree((HLOCAL) ptr);
       }

       IFSCloseFile(ifsfile);
     }
     
     IFSClose(ifs);
  }

  return rtn;
}