numfilesindir.c

嵌入式文件系统 ucfs.包含全部源代码

/*
**********************************************************************
*                          Micrium, Inc.
*                      949 Crestview Circle
*                     Weston,  FL 33327-1848
*
*                            uC/FS
*
*             (c) Copyright 2001 - 2003, Micrium, Inc.
*                      All rights reserved.
*
***********************************************************************

----------------------------------------------------------------------
File        : NumFilesInDir.c
Purpose     : Sample program demonstrating how to get the number
              of files in a directory.
---------------------------END-OF-HEADER------------------------------
*/

#include "fs_api.h"
#include <string.h>
#include <stdio.h>

/*********************************************************************
*
*             MainTask
*/
static void _WriteFile(const char * pFileName) {
  FS_FILE * pFile;
  pFile = FS_FOpen(pFileName, "w");
  FS_Log("Writing file ");
  FS_Log(pFileName);
  FS_Log("\n");
  if (!pFile) {
    FS_ErrorOut("Could not write file");
  }
  FS_FWrite("Test file\r\n", 11, 1, pFile);
  FS_FClose(pFile);
}

/*********************************************************************
*
*             MainTask
*/
void MainTask(void);
void MainTask(void) {
  FS_DIR * pDir;
  FS_I32   NumFiles;
  char acBuffer[80];
  /*
   * Create a directory 
   */
  if (FS_MkDir("TestDir")) {
    FS_ErrorOut("Could not create directory, maybe it already exists\n");
  }
  /*
   * Writing some files in the root directory 
   */
  _WriteFile("Test1.txt");
  _WriteFile("Test2.txt");
  _WriteFile("Test3.txt");
  _WriteFile("Test4.txt");
  _WriteFile("Test5.txt");
  /*
   * Writing some files in "TestDir" directory 
   */
  _WriteFile("\\TestDir\\File1.txt");
  _WriteFile("\\TestDir\\File2.txt");
  _WriteFile("\\TestDir\\File3.txt");
  _WriteFile("\\TestDir\\File4.txt");
  /*
   * Retrieve the number of files in the root directory
   */
  pDir = FS_OpenDir("");              /* Open the root directory */
  if (pDir) {
    NumFiles = FS_GetNumFiles(pDir);
    FS_CloseDir(pDir);
    sprintf(acBuffer, "root directory contains %d file(s).\n", NumFiles);
    FS_Log(acBuffer);
  } else {
    FS_ErrorOut("Could not open directory");
  }
  /*
   * Retrieve the number of files in "TestDir" directory
   */
  pDir = FS_OpenDir("TestDir");              /* Open "TestDir" directory */
  if (pDir) {
    NumFiles = FS_GetNumFiles(pDir);
    FS_CloseDir(pDir);
    sprintf(acBuffer, "TestDir dirctory contains %d file(s).\n", NumFiles);
    FS_Log(acBuffer);
  } else {
    FS_ErrorOut("Could not open directory");
  }

}


/*************************** End of file ****************************/