递归取目录下所有文件名与路径

#include <unistd.h>
#include <stdio.h>
#include <dirent.h>

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

void printdir(char* dir, int depth)
{
 DIR *dp;
 struct dirent *entry;
 struct stat statbuf;

 if( (dp = opendir(dir))  == NULL )
 {
  fprintf(stderr, "cannot open directory: %s\n", dir);
  return;
 }

 chdir(dir);
 while( (entry = readdir(dp)) != NULL)
 {
  lstat(entry->d_name, &statbuf);
  if( S_ISDIR(statbuf.st_mode) )
  {
   if( strcmp(".", entry->d_name) == 0 || strcmp("..", entry->d_name) == 0 )
    continue;
   printf("%*s%s/\n", depth, "", entry->d_name);
   printdir(entry->d_name, depth+4);
  }
  else
   printf("%*s%s\n", depth, "", entry->d_name);
 }
 chdir("..");
 closedir(dp);
}

int main(int argc, char* argv[])
{
 char *topdir = ".";
 if( argc >= 2 )
  topdir=argv[1];
 printf("Directory scan of %s\n", topdir);
 printdir(topdir, 0);
 printf("Done.\n");

 exit(0);
}