C++ (Cpp) IS_BUFFER_END примеры использования

Пример #1

Файл: ext2fs.cpp Проект: Klozz/ext2read

Ext2File *Ext2Partition::read_dir(EXT2DIRENT *dirent)
{
    string filename;
    Ext2File *newEntry;
    char *pos;
    int ret;

    if(!dirent)
        return NULL;
    if(!dirent->dirbuf)
    {
        dirent->dirbuf = (EXT2_DIR_ENTRY *) new char[blocksize];
        if(!dirent->dirbuf)
            return NULL;
        ret = read_data_block(&dirent->parent->inode, dirent->next_block, dirent->dirbuf);
        if(ret < 0)
            return NULL;

        dirent->next_block++;
    }

    again:
    if(!dirent->next)
        dirent->next = dirent->dirbuf;
    else
    {
        pos = (char *) dirent->next;
        dirent->next = (EXT2_DIR_ENTRY *)(pos + dirent->next->rec_len);
        if(IS_BUFFER_END(dirent->next, dirent->dirbuf, blocksize))
        {
            dirent->next = NULL;
            if(dirent->read_bytes < dirent->parent->file_size)
            {
                //LOG("DIR: Reading next block %d parent %s\n", dirent->next_block, dirent->parent->file_name.c_str());
                ret = read_data_block(&dirent->parent->inode, dirent->next_block, dirent->dirbuf);
                if(ret < 0)
                    return NULL;

                dirent->next_block++;
                goto again;
            }
            return NULL;
        }
    }

    dirent->read_bytes += dirent->next->rec_len;
    filename.assign(dirent->next->name, dirent->next->name_len);
    if((filename.compare(".") == 0) ||
       (filename.compare("..") == 0))
        goto again;


    newEntry = read_inode(dirent->next->inode);
    if(!newEntry)
    {
        LOG("Error reading Inode %d parent inode %d.\n", dirent->next->inode, dirent->parent->inode_num);
        return NULL;
    }

    newEntry->file_type = dirent->next->filetype;
    newEntry->file_name = filename;

    return newEntry;
}

Пример #2

Файл: Partition.cpp Проект: BIZMONT/ExtMounter

ExtFile *Partition::ReadDirectory(EXT2DIRENT *dirent)
{
    string filename;
    ExtFile *newEntry;
    char *pos;
    int ret;

    if(!dirent)
        return NULL;
    if(!dirent->dirbuf)
    {
        dirent->dirbuf = (EXT2_DIR_ENTRY *) new char[blocksize];
        if(!dirent->dirbuf)
            return NULL;
        ret = ReadDataBlock(&dirent->parent->inode, dirent->next_block, dirent->dirbuf);
        if(ret < 0)
            return NULL;

        dirent->next_block++;
    }

again:
    if(!dirent->next)
        dirent->next = dirent->dirbuf;
    else
    {
        pos = (char *) dirent->next;
        dirent->next = (EXT2_DIR_ENTRY *)(pos + dirent->next->rec_len);
        if(IS_BUFFER_END(dirent->next, dirent->dirbuf, blocksize))
        {
            dirent->next = NULL;
            if(dirent->read_bytes < dirent->parent->file_size)
            {
                ret = ReadDataBlock(&dirent->parent->inode, dirent->next_block, dirent->dirbuf);
                if(ret < 0)
                    return NULL;

                dirent->next_block++;
                goto again;
            }
            return NULL;
        }
    }

    dirent->read_bytes += dirent->next->rec_len;
    filename.assign(dirent->next->name, dirent->next->name_len);
    if((filename.compare(".") == 0) ||
            (filename.compare("..") == 0))
        goto again;


    newEntry = ReadInode(dirent->next->inode);
    if(!newEntry)
    {
        LOG("Помилка читання Inode %d батьківський inode %d.\n", dirent->next->inode, dirent->parent->inode_num);
        return NULL;
    }

    newEntry->file_type = dirent->next->filetype;
    newEntry->file_name = filename;

    return newEntry;
}