#include <string>#include <vector>#include <cstring>#include <cstdio>#include <dirent.h>#include <sys/stat.h>#include <sys/types.h>using std::strcmp;using std::string;using std::vector;#if __cplusplus < 201103L	#define nullptr NULL#endif#define SEARCH_PATH_LENGTH 1024/**	搜索一个文件夹下的符合条件的文件*/bool searchFile(const char* directory, vector<string>& files, const char* ext, int subdir_level){	const char* dir_path = directory;	DIR	*dir = nullptr;		//打开文件夹	if((dir = opendir(dir_path)) == nullptr)	{		return false;	}		struct dirent 	entry;	struct dirent* 	result;	struct stat		file_stat;		char cur_name[SEARCH_PATH_LENGTH];		//读取文件夹下的一个文件	while(readdir_r(dir, &entry, &result) == 0 && result)	{		const char* name = entry.d_name;				//忽略掉.和..		if(strcmp(name, ".") == 0 || strcmp(name, "..") == 0)			continue;				//检查拼接路径		int count = sprintf(cur_name, "%s", dir_path);				count += sprintf(&cur_name[count], "%s%s", cur_name[count - 1] == ‘/‘ ? "" : "/", name);				//获取文件的状态		if(lstat(cur_name, &file_stat) != -1)		{			//文件是普通文件			if(!S_ISDIR(file_stat.st_mode))			{					const char* rf = strrchr(cur_name, ‘.‘);								//检查文件的后缀名				if(rf != nullptr && strcmp(rf + 1, ext) == 0)					files.push_back(string(cur_name, count));			}			//文件是文件夹			else if(subdir_level >= 0)			{				//递归获取下一层目录的文件				searchFile(cur_name, files, subdir_level - 1);			}		}	}	closedir(dir);		return true;}