is_readable, is_writable: Java speedup

Author: scivision

+stdlib/is_readable.m

@@ -15,7 +15,11 @@
   file = stdlib.absolute(file, "", false, use_java);
 
   % https://docs.oracle.com/en/java/javase/21/docs/api/java.base/java/nio/file/Files.html#isReadable(java.nio.file.Path)
-  ok = java.nio.file.Files.isReadable(java.io.File(file).toPath());
+  %ok = java.nio.file.Files.isReadable(java.io.File(file).toPath());
+
+  % java.io.File().canRead() is about twice as fast as
+  % java.nio.file.Files.isReadable()
+  ok = java.io.File(file).canRead();
 else
   [status, v] = fileattrib(file);
 

+stdlib/is_writable.m

@@ -15,7 +15,10 @@
   file = stdlib.absolute(file, "", false, true);
 
   % https://docs.oracle.com/en/java/javase/22/docs/api/java.base/java/nio/file/Files.html#isWritable(java.nio.file.Path)
-  ok = java.nio.file.Files.isWritable(java.io.File(file).toPath());
+  %ok = java.nio.file.Files.isWritable(java.io.File(file).toPath());
+
+  % java.io.File().canWrite() is about twice as fast
+  ok = java.io.File(file).canWrite();
 else
   [status, v] = fileattrib(file);
 

codemeta.json

@@ -4,7 +4,6 @@
     "license": "https://spdx.org/licenses/MIT",
     "codeRepository": "https://github.com/geospace-code/matlab-stdlib",
     "contIntegration": "https://github.com/geospace-code/matlab-stdlib/actions",
-    "dateModified": "2022-09-25",
     "downloadUrl": "https://github.com/geospace-code/matlab-stdlib/releases",
     "issueTracker": "https://github.com/geospace-code/matlab-stdlib/issues",
     "name": "matlab-stdlib",