/////////////////////////////////////////////////////////////////////
//  CreateUtils.h   - Create a process, retrieve error messages    //
//                                                                 //
//  Language:    Visual C++, ver 7.0                               //
//  Platform:    Dell Dimension 8100, Windows 2000, SP2            //
//  Application: Tool to support converting web pages from         //
//               XML/XSL to HTML                                   //
//  Author:      Jim Fawcett, CST 2-187, Syracuse Univ.            //
//               (315) 443-3948, jfawcett@twcny.rr.com             //
/////////////////////////////////////////////////////////////////////

#include "stdafx.h"
#include <iostream>
#include "CreateUtils.h"

bool Process::Create(char *pCL)
{
  // arguments for create process:
  
  STARTUPINFO startInfo;          // establishes properties of child process
  PROCESS_INFORMATION procInfo;   // holds info returned from CreateProcess
  LPCTSTR appName                = NULL;               // program to run
  LPTSTR  commandLine            = pCL;                // main's args
  LPSECURITY_ATTRIBUTES procSec  = NULL;               // default security
  LPSECURITY_ATTRIBUTES thrdSec  = NULL;               // default security
  BOOL inheritHandles            = FALSE;              // don't inherit hndls
//  DWORD createFlags              = CREATE_NEW_CONSOLE; // make a console
  DWORD createFlags              = NULL;               // don't make a console
  LPVOID environment             = NULL;               // caller's evironmt
  LPCTSTR currentPath            = NULL;               // default dir
  LPSTARTUPINFO pStartInfo       = &startInfo;         // set process style
  LPPROCESS_INFORMATION pPrInfo  = &procInfo;          // retrieve info
 
//
  std::string buildTitle = std::string("child process: "); //+= pName;
  GetStartupInfo(&startInfo);
  startInfo.lpTitle = (char*)buildTitle.c_str();
  startInfo.dwFlags = STARTF_USEPOSITION | STARTF_USESIZE;
  startInfo.dwX     = 200;
  startInfo.dwY     = 250;
  startInfo.dwXSize = 600;
  startInfo.dwYSize = 300;

  std::cout << "\n  Attempting to start: " // << appName 
            << "\n  with arguments: " << commandLine << std::endl;

  BOOL OK =
  CreateProcess(
    appName,commandLine,procSec,thrdSec,inheritHandles,
    createFlags,environment,currentPath,pStartInfo,pPrInfo
  );
  
  // wait for child process to terminate before terminating

  WaitForSingleObject(procInfo.hProcess,INFINITE);
  CloseHandle(procInfo.hThread);  // parent needs no access to child thread
  CloseHandle(procInfo.hProcess); // parent needs no access to child process
  
  std::cout << "\n\n";
  return OK;
};

std::string SysErrors::GetLastErrorMsg()
{
  DWORD errorCode = GetLastError();

  // map errorCode into a system defined error string
    
  DWORD dwFlags = 
    FORMAT_MESSAGE_FROM_SYSTEM | FORMAT_MESSAGE_ALLOCATE_BUFFER;
  LPCVOID lpSource = NULL;
  DWORD dwMessageID = errorCode;
  DWORD dwLanguageId = MAKELANGID(LANG_ENGLISH,SUBLANG_ENGLISH_US);
  LPSTR lpBuffer;
  DWORD nSize = 0;
  va_list *Arguments = NULL;

  FormatMessage(
    dwFlags,lpSource,dwMessageID,dwLanguageId, 
    (LPTSTR)&lpBuffer,nSize,Arguments
  );

  std::cout << "\n  error: ";
  if(lpBuffer)
    std::cout << lpBuffer << "\n  --- did you forget extension .exe?" << "\n\n";
  return std::string(lpBuffer);  
}