move *version from mat_gemini

Author: scivision

+stdlib/+test/TestVersion.m

@@ -0,0 +1,12 @@
+classdef TestVersion < matlab.unittest.TestCase
+
+methods (Test)
+
+function test_version(tc)
+tc.verifyTrue(stdlib.version_atleast("3.19.0.33", "3.19.0"))
+tc.verifyFalse(stdlib.version_atleast("3.19.0.33", "3.19.0.34"))
+end
+
+end
+
+end

+stdlib/cmake_atleast.m

@@ -0,0 +1,14 @@
+function r = cmake_atleast(min_version)
+arguments
+  min_version (1,1) string {mustBeNonzeroLengthText}
+end
+
+[ret, msg] = system("cmake --version");
+
+assert(ret==0, "problem getting CMake version " + msg)
+
+match = regexp(msg, "(?<=cmake version )(\d+\.\d+\.\d+)", 'match');
+
+r = stdlib.version_atleast(match{1}, min_version);
+
+end

+stdlib/version_atleast.m

@@ -0,0 +1,36 @@
+function r = version_atleast(in, ref)
+% compare two string verions: major.minor.rev.patch
+% uses strings to compare so mixed number/string is OK
+%
+% parameters
+% ------------
+% in: version to examine (string)
+% ref: version to compare against (at least this version is true)
+%
+% returns
+% -------
+% r: logical
+
+arguments
+    in (1,1) string
+    ref (1,1) string
+end
+
+in = split(in, ' ');
+in = split(in(1), '.');
+
+ref = split(ref, '.');
+
+for i = 1:min(length(in), length(ref))
+  if in(i) > ref(i)
+    r = true;
+    return
+  elseif in(i) < ref(i)
+    r = false;
+    return
+  end
+end
+
+r = in(end) >= ref(end);
+
+end % function