杰理之长文件名录音支持【篇】

void filename_test(void){
u8test_data = “filename test123”; //写入文件数据
u8 read_buf[32];//读取数据buf
int len;//文件大小
char path[256] = “storage/sd0/C”;//路径
FILEfd = NULL;//文件句柄指针

//文件名：longfilename.txt 通过字符转UTF16LE编码写入 // char file_name[128] ={'/','\\','U',0x6C,0x00,0x6F,0x00,0x6E,0x00,0x67,0x00,0x66,0x00,0x69,0x00,0x6C,0x00,0x65,0x00,0x6E,0x00,0x61,0x00,0x6D,0x00,0x65,0x00,0x2E,0x00,0x74,0x00,0x78,0x00,0x74,0x00}; //文件名：hello/测试创建长文件名测试.txt //char file_name[128] = {'/','h', 'e','l','l','o','/','\\','U',0x4B,0x6D,0xD5,0x8B,0x1B,0x52,0xFA,0x5E,0x7F,0x95,0x87,0x65,0xF6,0x4E,0x0D,0x54,0x4B,0x6D,0xD5,0x8B,0x2E,0x00,0x74,0x00,0x78,0x00,0x74,0x00}; //文件夹名：测试创建长文件名测试 //char file_name[128] = { '/','\\','U',0x4B,0x6D,0xD5,0x8B,0x1B,0x52,0xFA,0x5E,0x7F,0x95,0x87,0x65,0xF6,0x4E,0x0D,0x54,0x4B,0x6D,0xD5,0x8B}; //测试长文件夹名测试/测试创建长文件名测试.txt char file_name[128] = {'/','\\','U',0x4B,0x6D,0xD5,0x8B,0x7F,0x95,0x87,0x65,0xF6,0x4E,0x39,0x59,0x0D,0x54,0x4B,0x6D,0xD5,0x8B,'/',0x00,'\\','U',0x4B,0x6D,0xD5,0x8B,0x1B,0x52,0xFA,0x5E,0x7F,0x95,0x87,0x65,0xF6,0x4E,0x0D,0x54,0x4B,0x6D,0xD5,0x8B,0x2E,0x00,0x74,0x00,0x78,0x00,0x74,0x00}; // char file_name[128] = "/abdccbasbdoabioasdasdasdascz/sadklajlkjklzxcznmxczxz.txt"; printf("strlen(path)=%d,strlen file_name=%d",strlen(path),strlen(file_name)); memcpy(path+strlen(path),file_name,sizeof(file_name));//将文件名file_name复制到path路径后 printf("strlen(path)=%d,file_name=%d",strlen(path),sizeof(file_name)); put_buf(path,sizeof(path)); //创建并写文件 fd = fopen(path, "w+");//打开可 读/写文件，若文件存在则文件长度清为零，即该文件内容会消失；若文件不存在则创建该文件。 //FILE *fd = fopen(CONFIG_ROOT_PATH"test/test.txt", "w+"); if(fd){ // fwrite(test_data, 1, strlen(test_data), fd);//写入文件数据 fwrite(fd, test_data, strlen(test_data));//写入文件数据 fclose(fd);//关闭文件 printf("write file : %s \n", test_data); } //读文件 put_buf(path,sizeof(path));

fd = fopen(path, “r”);//以只读方式打开文件，该文件必须存在。
printf(“fd= %x”,fd);
//fd = fopen(CONFIG_ROOT_PATH"test/test.txt", “r”);
if(fd){
len = flen(fd);//获取整个文件大小
// fread(read_buf, 1, len, fd);//读取文件
fread(fd,read_buf,len);//读取文件
fclose(fd);//关闭文件
printf(“read file : %s \n”, read_buf);
}
}