本文整理汇总了C++中DirectoryIterator::GetNext方法的典型用法代码示例。如果您正苦于以下问题：C++ DirectoryIterator::GetNext方法的具体用法？C++ DirectoryIterator::GetNext怎么用？C++ DirectoryIterator::GetNext使用的例子？那么, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在类DirectoryIterator的用法示例。
在下文中一共展示了DirectoryIterator::GetNext方法的2个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的C++代码示例。
示例1: sizeof
static status_t
ext2_read_dir(fs_volume *_volume, fs_vnode *_node, void *_cookie,
struct dirent *dirent, size_t bufferSize, uint32 *_num)
{
DirectoryIterator *iterator = (DirectoryIterator *)_cookie;
Volume* volume = (Volume*)_volume->private_volume;
uint32 maxCount = *_num;
uint32 count = 0;
while (count < maxCount && bufferSize > sizeof(struct dirent)) {
size_t length = bufferSize - sizeof(struct dirent) + 1;
ino_t id;
status_t status = iterator->GetNext(dirent->d_name, &length, &id);
if (status == B_ENTRY_NOT_FOUND)
break;
if (status == B_BUFFER_OVERFLOW) {
// the remaining name buffer length was too small
if (count == 0)
return B_BUFFER_OVERFLOW;
break;
}
if (status != B_OK)
return status;
status = iterator->Next();
if (status != B_OK && status != B_ENTRY_NOT_FOUND)
return status;
dirent->d_dev = volume->ID();
dirent->d_ino = id;
dirent->d_reclen = sizeof(struct dirent) + length;
bufferSize -= dirent->d_reclen;
dirent = (struct dirent*)((uint8*)dirent + dirent->d_reclen);
count++;
}
*_num = count;
return B_OK;
}示例2: if
static status_t
btrfs_read_dir(fs_volume *_volume, fs_vnode *_node, void *_cookie,
struct dirent *dirent, size_t bufferSize, uint32 *_num)
{
DirectoryIterator* iterator = (DirectoryIterator*)_cookie;
size_t length = bufferSize;
ino_t id;
status_t status = iterator->GetNext(dirent->d_name, &length, &id);
if (status == B_ENTRY_NOT_FOUND) {
*_num = 0;
return B_OK;
} else if (status != B_OK)
return status;
Volume* volume = (Volume*)_volume->private_volume;
dirent->d_dev = volume->ID();
dirent->d_ino = id;
dirent->d_reclen = sizeof(struct dirent) + length;
*_num = 1;
return B_OK;
}