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iCAPs/packages/spm12/external/mne/fiff_make_dir_tree.m
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fiff_make_dir_tree.m
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function [tree, last] = fiff_make_dir_tree(fid,dir,start,indent)
%
% [tree, last] = fiff_make_dir_tree(fid,dir,start,indent)
%
% Create the directory tree structure
%
%
% Author : Matti Hamalainen, MGH Martinos Center
% License : BSD 3-clause
%
% Revision 1.6 2009/04/01 21:25:50 msh
% Fixed problems with fiff nodes with no tags in them
%
% Revision 1.5 2006/04/26 19:50:58 msh
% Added fiff_read_mri
%
% Revision 1.4 2006/04/23 15:29:40 msh
% Added MGH to the copyright
%
% Revision 1.3 2006/04/18 20:44:46 msh
% Added reading of forward solution.
% Use length instead of size when appropriate
%
% Revision 1.2 2006/04/12 10:29:02 msh
% Made evoked data writing compatible with the structures returned in reading.
%
% Revision 1.1 2006/04/10 23:26:54 msh
% Added fiff reading routines
%
%
% Define the relevant constants here
% no need to get the whole fiff_define_costants
%
FIFF_BLOCK_START = 104;
FIFF_BLOCK_END = 105;
FIFF_FILE_ID = 100;
FIFF_BLOCK_ID = 103;
FIFF_PARENT_BLOCK_ID = 110;
me='MNE:fiff_make_dir_tree';
verbose=0;
if nargin == 2
indent = 0;
start = 1;
elseif nargin == 3
indent = 0;
elseif nargin ~= 4
error(me,'Incorrect number of arguments');
end
if dir(start).kind == FIFF_BLOCK_START
tag = fiff_read_tag(fid,dir(start).pos);
block = tag.data;
else
block = 0;
end
if verbose ~= 0
for k = 1:indent
fprintf(1,'\t');
end
fprintf(1,'start { %d\n',block);
end
nchild = 0;
this = start;
tree.block = block;
tree.id = [];
tree.parent_id = [];
tree.nent = 0;
tree.nchild = 0;
tree.dir = dir(this);
tree.children = struct('block', {}, 'id', {}, 'parent_id', {}, 'nent', {}, 'nchild', {}, 'dir', {}, 'children', {});
while this <= length(dir)
if dir(this).kind == FIFF_BLOCK_START
if this ~= start
[ child , this ] = fiff_make_dir_tree(fid,dir,this,indent+1);
tree.nchild = tree.nchild + 1;
tree.children(tree.nchild) = child;
end
elseif dir(this).kind == FIFF_BLOCK_END
tag = fiff_read_tag(fid,dir(start).pos);
if tag.data == block
break;
end
else
tree.nent = tree.nent + 1;
tree.dir(tree.nent) = dir(this);
%
% Add the id information if available
%
if block == 0
if dir(this).kind == FIFF_FILE_ID
tag = fiff_read_tag(fid,dir(this).pos);
tree.id = tag.data;
end
else
if dir(this).kind == FIFF_BLOCK_ID
tag = fiff_read_tag(fid,dir(this).pos);
tree.id = tag.data;
elseif dir(this).kind == FIFF_PARENT_BLOCK_ID
tag = fiff_read_tag(fid,dir(this).pos);
tree.parent_id = tag.data;
end
end
end
this = this + 1;
end
%
% Eliminate the empty directory
%
if tree.nent == 0
tree.dir = [];
end
if verbose ~= 0
for k = 1:indent+1
fprintf(1,'\t');
end
% fprintf(1,'block = %d nent = %d nchild = %d\n',tree.block,tree.nent,tree.nchild);
fprintf(1,'block=%d\n',tree.block);
for k = 1:indent
fprintf(1,'\t');
end
fprintf(1,'end } %d\n',block);
end
last = this;
return;
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