[C语言]删除用户自定义后缀名的所有文件

环境：win7

IDE:DEV-C++

编译器：GCC

编译结果：Success

运行结果：Success

 

使用说明：

1.输入需要查询的目录，比如e:

2.输入需要删除的后缀名：比如:txt

 

注意：本程序使用Remove删除文件，所以删除的文件不会进回收站。

 

 

程序：http://files.cnblogs.com/IAmBetter/DeleteEverything.rar

源码：

#include <stdio.h>

#include <direct.h> //_getcwd(), _chdir()

#include <stdlib.h> //_MAX_PATH, system()

#include <io.h>     //_finddata_t, _findfirst(), _findnext(), _findclose()

#include <string.h> 

#include <windows.h>



//删除总数 

int count = 0;



//获取当前路径

void GetCurrentPath(void)

{

 	  char buf[80];

	  getcwd(buf, sizeof(buf));

	  printf("current working directory : %s\n", buf);

}



 

//获取后缀名 

char *substr(const char*str)

{

    char *ptr, c = '.'; 

    static char stbuf[256];

    ptr = strrchr(str, c); //最后一个出现c的位置

    if(ptr == NULL){

       return stbuf;

	   }

    int pos = ptr-str;//用指针相减 求得索引

    unsigned start = pos + 1;

    unsigned end = strlen(str);

    unsigned n = end - start;

    strncpy(stbuf, str + start, n);

    stbuf[n] = 0; //字串最后加上0

    return stbuf; 

}



//递归查询文件并且删除 

void findAllFile(char *pFilePath,char *extName)

{  

	WIN32_FIND_DATA FindFileData;  

	DWORD dwError;  

	HANDLE hFind = INVALID_HANDLE_VALUE;  

	char DirSpec[MAX_PATH+1];

	strncpy(DirSpec, pFilePath, strlen(pFilePath) + 1);  

	SetCurrentDirectory(pFilePath);  

	strncat(DirSpec, "\\*", 3);

	hFind = FindFirstFile(DirSpec, &FindFileData);  

	if (hFind == INVALID_HANDLE_VALUE){

       printf ("FileName:%s    Invalid file handle. Error is %u\n", pFilePath,GetLastError());  

   	   return ;  

	}

	else{

		if (FindFileData.dwFileAttributes != FILE_ATTRIBUTE_DIRECTORY ){  

        printf("FileName:%s\n", FindFileData.cFileName); 

		}

		else if(FindFileData.dwFileAttributes == FILE_ATTRIBUTE_DIRECTORY&& strcmp(FindFileData.cFileName, ".") != 0&& strcmp(FindFileData.cFileName, "..") != 0){

        char Dir[MAX_PATH + 1];  

        strcpy(Dir, pFilePath);  

        strncat(Dir, "\\", 2);  

        strcat(Dir, FindFileData.cFileName);

        findAllFile(Dir,extName);  

		}

		while (FindNextFile(hFind, &FindFileData) != 0){

			if (FindFileData.dwFileAttributes != FILE_ATTRIBUTE_DIRECTORY){

			     _chdir( pFilePath );

				 char *extname2 = substr(FindFileData.cFileName);

  	  			 if(strcmp(extname2,extName) ==0){

			         printf ("\nFileName:%s ", FindFileData.cFileName);

					 int result = remove(FindFileData.cFileName);

				  	 if(result == 0)

				  	 {

 		   			 		   printf("Delete Result:%d",result);

 		   			 		   count++;

							   }

                      else{

					  	  perror("remove");

						  }

					 }

			}  

			else if(FindFileData.dwFileAttributes == FILE_ATTRIBUTE_DIRECTORY && strcmp(FindFileData.cFileName, ".") != 0&& strcmp(FindFileData.cFileName, "..") != 0){  

				char Dir[MAX_PATH + 1];  

				strcpy(Dir, pFilePath);  

				strncat(Dir, "\\", 2);  

				strcat(Dir, FindFileData.cFileName); 

				findAllFile(Dir,extName);  

			}

		}

		dwError = GetLastError();  

		FindClose(hFind);  

		if (dwError != ERROR_NO_MORE_FILES) {  

			printf ("FindNextFile error. Error is %u\n", dwError);  

			return;  

		}  

	}  

}  





//开始显示部分 

void Show(char str[])

{

 	 int i,len;

	 len = strlen(str);

 	 for(i=0;i<len;i++)

 	 {

	     printf("%c",str[i]);

	     sleep(100);

	 }

 }

 

 

int main(void)

{

 	printf("Anleb : ");

	sleep(1000);

 	char string1[] = "I am Anleb,nice to somthing!\n";

	Show(string1);

 	printf("Anleb : ");

 	sleep(1000);

 	char string2[] = "Go,gay!\n";

	Show(string2);

	printf("Please Enter the Path:");

	char path[128];

	gets(path);

	while(strlen(path) == 0)

	{

	 				printf("Warning:The Path value is Null!\n");

	 				printf("Please Enter the Path:");

	 				gets(path);

					}

	if(strcmp(path,"exit") ==0)

		return 0;

	printf("Please Enter the ExtName:");

	char extName[10];

	gets(extName);

	while(strlen(extName) == 0)

	{

	 				printf("Warning:The ExtName value is Null!\n");

	 				printf("Please Enter the ExtName:");

	 				gets(extName);

					}

	if(strcmp(extName,"exit") ==0)

		return 0;

	findAllFile(path,extName);

	printf("\nDelete Count: %d\n",count);

 	system("pause");

 	return 0; 	 

}