mwtkrayer
/
ucftools
1
0
Fork 0
Code Issues Pull Requests Releases Wiki Activity

fixed EOF bug if no trailing zeros are written, fixed ustar magic check

This commit is contained in:
Michael Stumpf (ifhcluster) 2019-12-06 18:02:48 +01:00
parent d4aae06f34
commit 1409eb5fca
1 changed files with 59 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

60
matlab/@ustar/ustar.m
View File

@ -163,6 +163,43 @@ classdef ustar < handle
% fname name of subfile
flag = any(ismember(obj.subFile,fname));
end
function writeIndex(obj,outfile)
% obj.writeIndex(outfile)
% Write a index file for tar archive in custom '.taridx' format
% The format is:
% nsubfile int64
% [nsubfile times]
% subFileName 256*char
% subFileBeg int64
% subFileSize int64
% Input
% outfile name of index file to be written (with extension '.taridx')
fid = fopen(outfile,'wb');
fwrite(fid,obj.NumberOfSubfiles,'int64');
for ii=1:obj.NumberOfSubfiles
nchar = length(obj.subFile{ii});
subfile = blanks(256);
subfile(1:nchar) = obj.subFile{ii};
subfile(nchar+1) = 0;
fwrite(fid,subfile,'256*char');
fwrite(fid,obj.subFileBeg(ii),'int64');
fwrite(fid,obj.subFileSize(ii),'int64');
end
fclose(fid);
end
function [fname,foffset,fsize,nfile] = dumpIndex(obj)
% obj.dumpIndex()
% Get indexing data of tarfile
% Output
% fname cell array of file names
% foffset data offset within tar file
% fsize data size
% nfile number of files in archive
nfile = obj.NumberOfSubfiles;
fname = obj.subFile;
foffset = obj.subFileBeg;
fsize = obj.subFileSize;
end
end
%% ------------------------------------------------------------------------%%
%% PRIVATE METHODS %%
@ -267,6 +304,23 @@ classdef ustar < handle
else % no msgpack decoder available
error('No msgpack decoder available.');
end
case '.taridx'
% Open and read file contents (binary)
indexfileID = fopen(obj.IndexFile,'rb');
if indexfileID<0
error('Unable to open file: %s',obj.IndexFile);
end
fseek(indexfileID,0,'bof');
nsubfile = fread(indexfileID,1,'int64=>double');
tarFileName = cell(1,nsubfile);
tarFileSize = zeros(1,nsubfile);
tarFileOffset = zeros(1,nsubfile);
for isub=1:nsubfile
tarFileName{isub} = deblank(fread(indexfileID,[1,256],'char=>char'));
tarFileOffset(isub) = fread(indexfileID,1,'int64=>double');
tarFileSize(isub) = fread(indexfileID,1,'int64=>double');
end
fclose(indexfileID);
otherwise
error('Unknown file extension of index file: %s',fileExtension);
end
@ -310,7 +364,8 @@ classdef ustar < handle
error('Checksum mismatch! %d,%d',chksum1,chksum2);
end
% Evaluate magic
if ~strcmp(ustar.parseStr(magic),'ustar')
%if ~strcmp(ustar.parseStr(magic),'ustar')
if isempty(strfind(ustar.parseStr(magic),'ustar'))
error(' Not a UNIX standard tar file.')
end
% Parse header information
@ -339,6 +394,9 @@ classdef ustar < handle
curPosition = ftell(obj.fileID);
blockref = zeros(1,obj.blockSize,'int8');
blockcur = fread(obj.fileID,[1,obj.blockSize],'int8=>int8');
if feof(obj.fileID)
isEOF = true;
end
if isequal(blockcur,blockref)
blockcur = fread(obj.fileID,[1,obj.blockSize],'int8=>int8');
if isequal(blockcur,blockref)