/*-----------------------------------------------------------------------------
* osd_opendir: open a directory for iteration
*
* Parameters:
*
* dirname - path to the directory in question
*
* Return value:
*
* upon success, this function should return an osd_directory pointer
* which contains opaque data necessary to traverse the directory; on
* failure, this function should return NULL
* -----------------------------------------------------------------------------*/
public override osd_directory osd_opendir(string dirname)
{
if (!Directory.Exists(dirname))
{
return(null);
}
osd_directory_WinForms dirWinForms = new osd_directory_WinForms();
dirWinForms.m_directory = new DirectoryInfo(dirname);
dirWinForms.m_directories = dirWinForms.m_directory.GetDirectories();
dirWinForms.m_files = dirWinForms.m_directory.GetFiles();
return(dirWinForms);
}
/*-----------------------------------------------------------------------------
* osd_readdir: return information about the next entry in the directory
*
* Parameters:
*
* dir - pointer to an osd_directory that was returned from a prior
* call to osd_opendir
*
* Return value:
*
* a constant pointer to an osd_directory_entry representing the current item
* in the directory, or NULL, indicating that no more entries are
* present
* -----------------------------------------------------------------------------*/
public override osd_directory_entry osd_readdir(osd_directory dir)
{
osd_directory_WinForms dirWinForms = (osd_directory_WinForms)dir;
if (dirWinForms.m_directoryIdx < dirWinForms.m_directories.Length)
{
osd_directory_entry entry = new osd_directory_entry();
entry.name = dirWinForms.m_directories[dirWinForms.m_directoryIdx++].Name;
entry.type = osd_dir_entry_type.ENTTYPE_DIR;
return(entry);
}
else if (dirWinForms.m_fileIdx < dirWinForms.m_files.Length)
{
osd_directory_entry entry = new osd_directory_entry();
entry.name = dirWinForms.m_files[dirWinForms.m_fileIdx++].Name;
entry.type = osd_dir_entry_type.ENTTYPE_FILE;
return(entry);
}
else
{
return(null);
}
}
