subsys/system/cmd/free.c

   1 /*
   2  *  FREE.C - internal command.
   3  *
   4  *
   5  *  History:
   6  *
   7  *    01-Sep-1999 (Eric Kohl)
   8  *        Started.
   9  */
  10
  11 #include "config.h"
  12
  13 #ifdef INCLUDE_CMD_FREE
  14
  15 #include <windows.h>
  16 #include <tchar.h>
  17 #include <string.h>
  18 #include <stdio.h>
  19 #include <ctype.h>
  20
  21 #include "cmd.h"
  22
  23
  24 /*
  25  * convert
  26  *
  27  * insert commas into a number
  28  */
  29
  30 static INT
  31 ConvertULargeInteger (ULARGE_INTEGER num, LPTSTR des, INT len)
  32 {
  33         TCHAR temp[32];
  34         INT c = 0;
  35         INT n = 0;
  36
  37         if (num.QuadPart == 0)
  38         {
  39                 des[0] = _T('0');
  40                 des[1] = _T('\0');
  41                 n = 1;
  42         }
  43         else
  44         {
  45                 temp[31] = 0;
  46                 while (num.QuadPart > 0)
  47                 {
  48                         if (((c + 1) % (nNumberGroups + 1)) == 0)
  49                                 temp[30 - c++] = cThousandSeparator;
  50                         temp[30 - c++] = (TCHAR)(num.QuadPart % 10) + _T('0');
  51                         num.QuadPart /= 10;
  52                 }
  53
  54                 for (n = 0; n <= c; n++)
  55                         des[n] = temp[31 - c + n];
  56         }
  57
  58         return n;
  59 }
  60
  61
  62 static VOID
  63 PrintDiskInfo (LPTSTR szDisk)
  64 {
  65         TCHAR szRootPath[4] = _T("A:\\");
  66         TCHAR szDrive[2] = _T("A");
  67         TCHAR szVolume[64];
  68         TCHAR szSerial[10];
  69         TCHAR szTotal[40];
  70         TCHAR szUsed[40];
  71         TCHAR szFree[40];
  72         DWORD dwSerial;
  73         ULARGE_INTEGER uliSize;
  74         DWORD dwSecPerCl;
  75         DWORD dwBytPerSec;
  76         DWORD dwFreeCl;
  77         DWORD dwTotCl;
  78
  79         if (_tcslen (szDisk) < 2 || szDisk[1] != _T(':'))
  80         {
  81                 ConErrPrintf (_T("Invalid drive %s\n"), szDisk);
  82                 return;
  83         }
  84
  85         szRootPath[0] = szDisk[0];
  86         szDrive[0] = _totupper (szRootPath[0]);
  87
  88         if (!GetVolumeInformation (szRootPath, szVolume, 64, &dwSerial,
  89                                    NULL, NULL, NULL, 0))
  90         {
  91                 ConErrPrintf (_T("Invalid drive %s:\n"), szDrive);
  92                 return;
  93         }
  94
  95         if (szVolume[0] == _T('\0'))
  96                 _tcscpy (szVolume, _T("unlabeled"));
  97
  98         _stprintf (szSerial,
  99                    _T("%04X-%04X"),
 100                    HIWORD(dwSerial),
 101                    LOWORD(dwSerial));
 102
 103         if (!GetDiskFreeSpace (szRootPath, &dwSecPerCl,
 104                                &dwBytPerSec, &dwFreeCl, &dwTotCl))
 105         {
 106                 ConErrPrintf (_T("Invalid drive %s:\n"), szDrive);
 107                 return;
 108         }
 109
 110         uliSize.QuadPart = dwSecPerCl * dwBytPerSec * dwTotCl;
 111         ConvertULargeInteger (uliSize, szTotal, 40);
 112
 113         uliSize.QuadPart = dwSecPerCl * dwBytPerSec * (dwTotCl - dwFreeCl);
 114         ConvertULargeInteger (uliSize, szUsed, 40);
 115
 116         uliSize.QuadPart = dwSecPerCl * dwBytPerSec * dwFreeCl;
 117         ConvertULargeInteger (uliSize, szFree, 40);
 118
 119         ConOutPrintf (_T("\n"
 120                          " Volume in drive %s is %-11s   Serial number is %s\n"
 121                          "  %16s bytes total disk space\n"
 122                          "  %16s bytes used\n"
 123                          "  %16s bytes free\n"),
 124                       szDrive, szVolume, szSerial,
 125                       szTotal, szUsed, szFree);
 126 }
 127
 128
 129 INT CommandFree (LPTSTR cmd, LPTSTR param)
 130 {
 131         LPTSTR szParam;
 132         TCHAR  szDefPath[MAX_PATH];
 133         INT argc, i;
 134         LPTSTR *arg;
 135
 136         if (!_tcsncmp (param, _T("/?"), 2))
 137         {
 138                 ConOutPuts (_T("Displays drive information.\n"
 139                                "\n"
 140                                "FREE [drive: ...]"));
 141                 return 0;
 142         }
 143
 144         if (!param || *param == _T('\0'))
 145         {
 146                 GetCurrentDirectory (MAX_PATH, szDefPath);
 147                 szDefPath[2] = _T('\0');
 148                 szParam = szDefPath;
 149         }
 150         else
 151                 szParam = param;
 152
 153         arg = split (szParam, &argc, FALSE);
 154
 155         for (i = 0; i < argc; i++)
 156                 PrintDiskInfo (arg[i]);
 157
 158         freep (arg);
 159
 160         return 0;
 161 }
 162
 163 #endif /* INCLUDE_CMD_FREE */
 164
 165 /* EOF */