1######################################################################## 2## 3## Copyright (C) 2014-2021 The Octave Project Developers 4## 5## See the file COPYRIGHT.md in the top-level directory of this 6## distribution or <https://octave.org/copyright/>. 7## 8## This file is part of Octave. 9## 10## Octave is free software: you can redistribute it and/or modify it 11## under the terms of the GNU General Public License as published by 12## the Free Software Foundation, either version 3 of the License, or 13## (at your option) any later version. 14## 15## Octave is distributed in the hope that it will be useful, but 16## WITHOUT ANY WARRANTY; without even the implied warranty of 17## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 18## GNU General Public License for more details. 19## 20## You should have received a copy of the GNU General Public License 21## along with Octave; see the file COPYING. If not, see 22## <https://www.gnu.org/licenses/>. 23## 24######################################################################## 25 26## -*- texinfo -*- 27## @deftypefn {} {@var{filename} =} fullfile (@var{dir1}, @var{dir2}, @dots{}, @var{file}) 28## @deftypefnx {} {@var{filenames} =} fullfile (@dots{}, @var{files}) 29## Build complete filename from separate parts. 30## 31## Joins any number of path components intelligently. The return value is 32## the concatenation of each component with exactly one file separator 33## between each non empty part and at most one leading and/or trailing file 34## separator. 35## 36## If the last component part is a cell array, returns a cell array of 37## filepaths, one for each element in the last component, e.g.: 38## 39## @example 40## @group 41## fullfile ("/home/username", "data", @{"f1.csv", "f2.csv", "f3.csv"@}) 42## @result{} 43## @{ 44## [1,1] = /home/username/data/f1.csv 45## [1,2] = /home/username/data/f2.csv 46## [1,3] = /home/username/data/f3.csv 47## @} 48## @end group 49## @end example 50## 51## On Windows systems, while forward slash file separators do work, they are 52## replaced by backslashes; in addition drive letters are stripped of leading 53## file separators to obtain a valid file path. 54## 55## Note: @code{fullfile} does not perform any validation of the resulting full 56## filename. 57## @seealso{fileparts, filesep} 58## @end deftypefn 59 60function filename = fullfile (varargin) 61 62 if (nargin && iscell (varargin{end})) 63 filename = cellfun (@(x) fullfile (varargin{1:end-1}, x), varargin{end}, 64 "UniformOutput", false); 65 else 66 non_empty = cellfun ("isempty", varargin); 67 unc = 0; 68 if (ispc && ! isempty (varargin)) 69 varargin = strrep (varargin, '/', filesep); 70 unc = strncmp (varargin{1}, '\\', 2); 71 varargin(1) = regexprep (varargin{1}, '[\\/]*([a-zA-Z]:[\\/]*)', "$1"); 72 endif 73 filename = strjoin (varargin(! non_empty), filesep); 74 filename(unc + strfind (filename(1+unc : end), [filesep filesep])) = ""; 75 endif 76 77endfunction 78 79 80%!shared fs, fsx, xfs, fsxfs, xfsy, xfsyfs 81%! fs = filesep (); 82%! fsx = [fs "x"]; 83%! xfs = ["x" fs]; 84%! fsxfs = [fs "x" fs]; 85%! xfsy = ["x" fs "y"]; 86%! xfsyfs = ["x" fs "y" fs]; 87 88%!assert (fullfile (""), "") 89%!assert (fullfile (fs), fs) 90%!assert (fullfile ("", fs), fs) 91%!assert (fullfile (fs, ""), fs) 92%!assert (fullfile ("", fs), fs) 93%!assert (fullfile ("x"), "x") 94%!assert (fullfile ("", "x"), "x") 95%!assert (fullfile ("x", ""), "x") 96%!assert (fullfile ("", "x", ""), "x") 97%!assert (fullfile ("x", "y"), xfsy) 98%!assert (fullfile ("x", "", "y"), xfsy) 99%!assert (fullfile ("x", "", "y", ""), xfsy) 100%!assert (fullfile ("", "x", "", "y", ""), xfsy) 101%!assert (fullfile (fs), fs) 102%!assert (fullfile (fs, "x"), fsx) 103%!assert (fullfile (fs, xfs), fsxfs) 104%!assert (fullfile (fsx, fs), fsxfs) 105%!assert (fullfile (fs, "x", fs), fsxfs) 106 107%!assert (fullfile ("x/", "/", "/", "y", "/", "/"), xfsyfs) 108%!assert (fullfile ("/", "x/", "/", "/", "y", "/", "/"), [fs xfsyfs]) 109%!assert (fullfile ("/x/", "/", "/", "y", "/", "/"), [fs xfsyfs]) 110 111## different on purpose so that "fullfile (c{:})" works for empty c 112%!assert (fullfile (), "") 113 114%!assert (fullfile ("x", "y", {"c", "d"}), {[xfsyfs "c"], [xfsyfs "d"]}) 115 116## Windows specific - drive letters and file sep type 117%!test 118%! if (ispc) 119%! assert (fullfile ('\/\/\//A:/\/\', "x/", "/", "/", "y", "/", "/"), ... 120%! ['A:\' xfsyfs]); 121%! endif 122 123## *nix specific - double backslash 124%!test 125%! if (isunix || ismac) 126%! assert (fullfile (fs, fs), fs); 127%! endif 128 129## Windows specific - drive letters and file sep type, cell array 130%!test 131%! if (ispc) 132%! tmp = fullfile ({"\\\/B:\//", "A://c", "\\\C:/g/h/i/j\/"}); 133%! assert (tmp{1}, 'B:\'); 134%! assert (tmp{2}, 'A:\c'); 135%! assert (tmp{3}, 'C:\g\h\i\j\'); 136%! endif 137