reactos/rosapps/cmdutils/tee/tee.c

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/*
* TEE.C - external command.
*
* clone from 4nt tee command
*
* 01 Sep 1999 - Paolo Pantaleo <paolopan@freemail.it>
* started
*
*
*/
#include <windows.h>
#include <tchar.h>
#include <stdio.h>
#include <malloc.h>
#define TEE_BUFFER_SIZE 8192
/*these are function that emulate the ones used in cmd*/
/*many of them are just copied in this file from their
original location*/
VOID ConOutPuts (LPTSTR szText)
{
DWORD dwWritten;
WriteFile (GetStdHandle (STD_OUTPUT_HANDLE), szText, _tcslen(szText), &dwWritten, NULL);
WriteFile (GetStdHandle (STD_OUTPUT_HANDLE), _T("\n"), 1, &dwWritten, NULL);
}
VOID ConErrPrintf (LPTSTR szFormat, ...)
{
DWORD dwWritten;
TCHAR szOut[4096];
va_list arg_ptr;
va_start (arg_ptr, szFormat);
_vstprintf (szOut, szFormat, arg_ptr);
va_end (arg_ptr);
WriteFile (GetStdHandle (STD_ERROR_HANDLE), szOut, _tcslen(szOut), &dwWritten, NULL);
}
VOID error_sfile_not_found (LPTSTR f)
{
ConErrPrintf (_T("Error opening file") _T(" - %s\n"), f);
}
VOID ConErrPuts (LPTSTR szText)
{
ConErrPrintf(_T("%s\n"),szText );
}
INT main (int argc,char **p)
{
/*reading/writing buffer*/
TCHAR buff[TEE_BUFFER_SIZE];
/*handle for file and console*/
HANDLE hConsoleIn,hConsoleOut;
/*bytes written by WriteFile and ReadFile*/
DWORD dwRead,dwWritten;
BOOL bRet,bAppend=FALSE;
/*command line parsing stuff*/
LPTSTR tmp;
INT i;
BOOL bQuote;
/*file list implementation*/
LPTSTR *files;
INT iFileCounter=0;
HANDLE *hFile;
/*used to remove '"' (if any)*/
INT add;
DWORD dw;
if (argc < 2)
return 1;
if (_tcsncmp (p[1], _T("/?"), 2) == 0)
{
ConOutPuts (_T("Copy standard input to both standard output and a file.\n"
"\n"
"TEE [/A] file...\n"
"\n"
" file One or more files that will receive output.\n"
" /A Append output to files.\n"));
return 0;
}
files = malloc(sizeof(LPTSTR)*argc);
hFile = malloc(sizeof(HANDLE)*argc);
hConsoleIn=GetStdHandle(STD_INPUT_HANDLE);
hConsoleOut=GetStdHandle(STD_OUTPUT_HANDLE);
/*parse command line for /a and file name(s)*/
for(i=1;i <argc;i++)
{
bQuote=FALSE;
add=0;
if(_tcsnicmp(p[i],_T("/a"),2) == 0)
{
bAppend = TRUE;
continue;
}
/*remove quote if any*/
if (p[i][0] == _T('"'))
{
tmp = _tcschr (p[i]+1, _T('"'));
if (tmp != 0)
{
add = 1;
*tmp= _T('\0');
}
}
/*add filename to array of filename*/
/*
if( iFileCounter >= sizeof(files) / sizeof(*files) )
{
ConErrPrintf("too many files, maximum is %d\n",sizeof(files) / sizeof(*files));
return 1;
}
*/
files[iFileCounter++]= p[i]+add;
}
/*open file(s)*/
for(i=0;i<iFileCounter;i++)
{
//l=0;
hFile[i] = CreateFile(files[i],GENERIC_WRITE,
0,NULL,
OPEN_ALWAYS,
FILE_ATTRIBUTE_NORMAL,NULL);
if (hFile[i] == INVALID_HANDLE_VALUE)
{
error_sfile_not_found (files[i]);
for(i=0;i<iFileCounter;i++)
CloseHandle (hFile[i]);
free (files);
free (hFile);
return 1;
}
/*set append mode*/
if (bAppend)
{
if (GetFileType (hFile[i]) == FILE_TYPE_DISK)
{
dw = SetFilePointer (hFile[i],0,NULL,FILE_END);
if (dw == 0xFFFFFFFF)
{
ConErrPrintf(_T("error moving to end of file %s"),files[i]);
for(i=0;i<iFileCounter;i++)
CloseHandle (hFile[i]);
free (files);
free (hFile);
return 1;
}
ConErrPrintf(_T("SetFilePointer() = %d\n"),dw);
}
}
}
/*read and write*/
do
{
bRet = ReadFile(hConsoleIn,buff,sizeof(buff),&dwRead,NULL);
if (dwRead>0 && bRet)
{
for(i=0;i<iFileCounter;i++)
WriteFile(hFile[i],buff,dwRead,&dwWritten,NULL);
WriteFile(hConsoleOut,buff,dwRead,&dwWritten,NULL);
}
} while(dwRead>0 && bRet);
for(i=0;i<iFileCounter;i++)
CloseHandle (hFile[i]);
free (files);
free (hFile);
return 0;
}
/* EOF */