爲什麼這個遞歸搜索不能進入第二級？

Question

#include <stdlib.h> 
#include <stdio.h> 
#include <dirent.h> 
#include <sys/stat.h> 
#include <string.h> 

void ini(char*, char*); 
int main(int args, char* argv[]) 
{ 

    if(args!=3) {printf("Enter correct format: myls.out . an"); return 0;} 
    ini(argv[1],argv[2]); 

    return 0; 
} 
void ini(char* dir,char* match) 
{ 
    DIR* dirp; 
    dirp = opendir(dir); 
    if (dirp == NULL) 
    { 
    printf("\ndir open error\n"); 
    exit(1); 
    } //Error for opening dir 
    else 
    { 
    struct stat fst; 
    struct dirent* dentry; 
    dentry = readdir(dirp); 

    while (dentry != NULL) 
    { 
     if (!stat(dentry->d_name, &fst)) 
     { 
     // report as whether is a directory or regular file 
     if (S_ISDIR(fst.st_mode)) 
     { 
      if(!strcmp(dentry->d_name,".") || !strcmp(dentry->d_name,"..")); 

      else 
      { 
       char fullpath[1024]; 

       strcpy(fullpath,dir); 
       strcat(fullpath,"/"); 
       strcat(fullpath,dentry->d_name); 

       ini(fullpath,match); 
      } 

     } 
     else if (S_ISREG(fst.st_mode)) 
     { 
      if(strstr(dentry->d_name,match)!=NULL) 
       printf("%s/%s \n",dir,dentry->d_name); 
     } 

     } 

     dentry = readdir(dirp); 
    } 
    closedir(dirp); 
    } 
    printf("\n"); 
} 

該程序需要2個參數。示例運行：

./a.out . an 
./andy.txt 
./subdir/band.out 
./subdir/cs337/handy.c 
./than.text 

當參數名稱是文件名稱的子字符串時，顯示完整路徑和文件的名稱。我的代碼的問題是它只能向下一級。誰能幫我？ 樣品：

./a.out . an 
./andy.txt 
./subdir/band.out 
./than.text 

Answer 1

你需要傳遞fullpath到stat，否則它不會告訴你，你正在尋找一個目錄：

while (dentry != NULL) { 
    // Make full path right away 
    char fullpath[1024]; 
    strcpy(fullpath,dir); 
    strcat(fullpath,"/"); 
    strcat(fullpath,dentry->d_name); 
    if (!stat(fullpath, &fst)) { // Pass fullpath to stat 
     // report as whether is a directory or regular file 
     if (S_ISDIR(fst.st_mode)) { 
      if(!strcmp(dentry->d_name,".") || !strcmp(dentry->d_name,"..")) 
       ; 
      ini(fullpath,match); 
     } else if (S_ISREG(fst.st_mode) && strstr(dentry->d_name,match)!=NULL) { 
      // Combine two conditions to eliminate "if" 
      printf("%s/%s \n",dir,dentry->d_name); 
     } 
    } 
}