//-----------------------------------------------------------------------------
// _check_file_open: Returns true if the file is already open
//-----------------------------------------------------------------------------
static int _check_file_open(FL_FILE file)
{
FL_FILE openFile = Filelib_open_files;
// Compare open files
while (openFile != null)
{
// If not the current file
if (openFile != file)
{
// Compare path and name
if ((fatfs_compare_names(openFile.path, file.path)) && (fatfs_compare_names(openFile.filename, file.filename)))
return 1;
}
openFile = openFile.next;
}
return 0;
}
//-----------------------------------------------------------------------------
// _free_file: Free open file handle
//-----------------------------------------------------------------------------
static void _free_file(FL_FILE file)
{
FL_FILE openFile = Filelib_open_files;
FL_FILE lastFile = null;
// Remove from open list
while (openFile != null)
{
// If the current file
if (openFile == file)
{
if (lastFile)
lastFile.next = openFile.next;
else
Filelib_open_files = openFile.next;
break;
}
lastFile = openFile;
openFile = openFile.next;
}
// Add to free list
file.next = Filelib_free_files;
Filelib_free_files = file;
}
//-----------------------------------------------------------------------------
// _allocate_file: Find a slot in the open files buffer for a new file
//-----------------------------------------------------------------------------
static FL_FILE _allocate_file()
{
// Allocate free file
FL_FILE file = Filelib_free_files;
if (file != null)
{
Filelib_free_files = file.next;
// Add to open list
file.next = Filelib_open_files;
Filelib_open_files = file;
}
return file;
}
