[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
 = 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;
}

转载于:https://www.cnblogs.com/IAmBetter/p/3173942.html

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