set_modtime: java or python

Author: scivision

+stdlib/private/py_set_modtime.m

@@ -0,0 +1,11 @@
+function ok = py_set_modtime(p)
+
+try
+  s = py.os.stat(p);
+  py.os.utime(p, py.tuple(s.st_atime, utc));
+  ok = true;
+catch
+  ok = false;
+end
+
+end

+stdlib/set_modtime.m

@@ -10,13 +10,19 @@
 try
   utc = convertTo(datetime(t, 'TimeZone', "UTC"), "posixtime");
 catch e
-  switch e.identifier
-    case "Octave:undefined-function", utc = t;
-    otherwise, rethrow(e);
+  if strcmp(e.identifier, "Octave:undefined-function")
+    utc = t;
+  else
+    rethrow(e);
   end
 end
 
-ok = javaObject("java.io.File", p).setLastModified(int64(utc) * 1000);
+% Java or Python assume POSIX epoch time (seconds since Jan 1, 1970)
+if stdlib.has_java()
+  ok = javaObject("java.io.File", p).setLastModified(int64(utc) * 1000);
+elseif stdlib.has_python()
+  ok = py_set_modtime(p);
+end
 
 end
 

test/TestJava.m

@@ -1,28 +1,5 @@
 classdef TestJava < matlab.unittest.TestCase
 
-properties
-td
-end
-
-methods(TestClassSetup)
-function set_temp_wd(tc)
-if isMATLABReleaseOlderThan('R2022a')
-  tc.td = tempname();
-  mkdir(tc.td);
-else
-  tc.td = tc.createTemporaryFolder();
-end
-end
-end
-
-methods(TestClassTeardown)
-function remove_temp_wd(tc)
-if isMATLABReleaseOlderThan('R2022a')
-  [s, m, i] = rmdir(tc.td, 's');
-  if ~s, warning(i, "Failed to remove temporary directory %s: %s", tc.td, m); end
-end
-end
-end
 
 methods(Test, TestTags="java")
 
@@ -54,23 +31,6 @@ function test_is_regular_file(tc)
 end
 
 
-function test_touch_modtime(tc)
-
-fn = fullfile(tc.td, "modtime.txt");
-
-tc.verifyTrue(stdlib.touch(fn, datetime("yesterday")))
-t0 = stdlib.get_modtime(fn);
-
-tc.verifyTrue(stdlib.set_modtime(fn, datetime("now")))
-t1 = stdlib.get_modtime(fn);
-
-tc.verifyGreaterThanOrEqual(t1, t0)
-end
-
-function test_set_modtime(tc)
-tc.verifyEqual(stdlib.set_modtime("", datetime("now")), false)
-end
-
 end
 
 end

test/TestSys.m

@@ -52,7 +52,7 @@ function test_is_parallel(tc)
 end
 
 function test_hostname(tc)
-tc.assumeTrue(stdlib.has_dotnet() || stdlib.has_java())
+tc.assumeTrue(stdlib.has_dotnet() || stdlib.has_java() || stdlib.has_python())
 
 h = stdlib.hostname();
 tc.verifyGreaterThan(strlength(h), 0)
@@ -66,14 +66,12 @@ function test_username(tc)
 end
 
 function test_cpu_arch(tc)
-tc.assumeTrue(stdlib.has_dotnet() || stdlib.has_java())
 
 arch = stdlib.cpu_arch();
 tc.verifyGreaterThan(strlength(arch), 0, "CPU architecture should not be empty")
 end
 
 function test_ram_total(tc)
-tc.assumeTrue(stdlib.dotnet_api() >= 6 || stdlib.has_java())
 
 t = stdlib.ram_total();
 tc.verifyGreaterThan(t, 0)
@@ -82,7 +80,6 @@ function test_ram_total(tc)
 
 
 function test_ram_free(tc)
-tc.assumeTrue(ispc() || stdlib.has_java())
 
 f = stdlib.ram_free();
 tc.verifyGreaterThan(f, 0)

test/TestTime.m

@@ -1,12 +1,58 @@
 classdef TestTime < matlab.unittest.TestCase
 
+properties
+td
+end
+
+methods(TestClassSetup)
+function set_temp_wd(tc)
+if isMATLABReleaseOlderThan('R2022a')
+  tc.td = tempname();
+  mkdir(tc.td);
+else
+  tc.td = tc.createTemporaryFolder();
+end
+end
+end
+
+methods(TestClassTeardown)
+function remove_temp_wd(tc)
+if isMATLABReleaseOlderThan('R2022a')
+  [s, m, i] = rmdir(tc.td, 's');
+  if ~s, warning(i, "Failed to remove temporary directory %s: %s", tc.td, m); end
+end
+end
+end
+
 methods (Test)
 
 function test_get_modtime(tc)
 tc.verifyEmpty(stdlib.get_modtime(""))
 end
 
 
+function test_touch_modtime(tc)
+tc.assumeTrue(stdlib.has_java() || stdlib.has_python())
+
+fn = fullfile(tc.td, "modtime.txt");
+
+tc.verifyTrue(stdlib.touch(fn, datetime("yesterday")))
+t0 = stdlib.get_modtime(fn);
+
+tc.verifyTrue(stdlib.set_modtime(fn, datetime("now")))
+t1 = stdlib.get_modtime(fn);
+
+tc.verifyGreaterThanOrEqual(t1, t0)
+end
+
+
+function test_set_modtime(tc)
+tc.assumeTrue(stdlib.has_java() || stdlib.has_python())
+  
+tc.verifyEqual(stdlib.set_modtime("", datetime("now")), false)
+end
+
+
 end
 
 end