1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
|
########################################################################
##
## Copyright (C) 2019-2024 The Octave Project Developers
##
## See the file COPYRIGHT.md in the top-level directory of this
## distribution or <https://octave.org/copyright/>.
##
## This file is part of Octave.
##
## Octave is free software: you can redistribute it and/or modify it
## under the terms of the GNU General Public License as published by
## the Free Software Foundation, either version 3 of the License, or
## (at your option) any later version.
##
## Octave is distributed in the hope that it will be useful, but
## WITHOUT ANY WARRANTY; without even the implied warranty of
## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
## GNU General Public License for more details.
##
## You should have received a copy of the GNU General Public License
## along with Octave; see the file COPYING. If not, see
## <https://www.gnu.org/licenses/>.
##
########################################################################
## -*- texinfo -*-
## @deftypefn {} {@var{tf} =} verLessThan (@var{package}, @var{version})
## Return true if the installed version of the package is less than
## @var{version}.
##
## @var{package} is the name of the package to check. Use @qcode{"Octave"} as
## the @var{package} to check the version of Octave itself.
##
## @var{version} is the version to compare it to. A version is a string in the
## format accepted by @code{compare_versions}: an arbitrarily long string
## composed of numeric and period characters, possibly followed by an arbitrary
## string (e.g., @qcode{"1.2.3"}, @qcode{"0.3"}, @qcode{"0.1.2+"}, or
## @qcode{"1.2.3.4-test1"}).
##
## Examples:
##
## @example
## @group
## tf = verLessThan ("Octave", "5")
## @result{} tf = 0
##
## tf = verLessThan ("io", "2.4.12")
## @result{} ...
##
## if (! verLessThan ("Octave", "5"))
## ## ... use new Octave 5 features ...
## endif
## @end group
## @end example
##
## @seealso{compare_versions, version, ver, pkg}
## @end deftypefn
function tf = verLessThan (package, version)
if (nargin != 2)
print_usage ();
endif
if (! ischar (package) || rows (package) != 1)
error ("verLessThan: PACKAGE must be a string");
endif
v = ver ();
idx = find (strcmpi (package, {v.Name}));
if (isempty (idx))
error ('verLessThan: package "%s" is not installed', package);
endif
tf = compare_versions (v(idx).Version, version, "<");
endfunction
%!assert (! verLessThan ("Octave", "0"))
%!assert (! verLessThan ("Octave", "6"))
%!assert (! verLessThan ("Octave", "3.0.0"))
%!assert (verLessThan ("Octave", "99.9.9"))
## Test input validation
%!error <Invalid call> verLessThan ()
%!error verLessThan ("a")
%!error verLessThan ("a", "1", "b")
%!error <package "no-such-package" is not installed>
%! verLessThan ("no-such-package", "1.1.1")
%!error <compare_versions: version numbers V1 and V2 must be strings>
%! verLessThan ("Octave", 4.1)
|
