upgrade oshi, remove jna dependency, fix mac support for shautil

pom.xml

@@ -297,12 +297,6 @@ cobbzilla-utils is available under the Apache License, version 2: http://www.apa
             <version>${args4j.version}</version>
         </dependency>
 
-        <dependency>
-            <groupId>net.java.dev.jna</groupId>
-            <artifactId>jna</artifactId>
-            <version>4.1.0</version>
-        </dependency>
-
         <!-- web/html screenshots -->
         <dependency>
             <groupId>com.codeborne</groupId>
@@ -377,7 +371,7 @@ cobbzilla-utils is available under the Apache License, version 2: http://www.apa
         <dependency>
             <groupId>com.github.oshi</groupId>
             <artifactId>oshi-core</artifactId>
-            <version>5.2.4</version>
+            <version>5.3.4</version>
         </dependency>
 
     </dependencies>

src/main/java/org/cobbzilla/util/daemon/ZillaRuntime.java

@@ -35,6 +35,7 @@ import static java.util.concurrent.TimeUnit.SECONDS;
 import static java.util.stream.LongStream.range;
 import static org.apache.commons.collections.CollectionUtils.collect;
 import static org.apache.commons.lang3.RandomStringUtils.randomAlphanumeric;
+import static org.apache.commons.lang3.SystemUtils.IS_OS_MAC;
 import static org.apache.commons.lang3.exception.ExceptionUtils.getStackTrace;
 import static org.cobbzilla.util.error.ExceptionHandler.DEFAULT_EX_RUNNABLE;
 import static org.cobbzilla.util.io.FileUtil.abs;
@@ -443,8 +444,8 @@ public class ZillaRuntime {
         return collect(range(start.longValue(), end.longValue()).boxed().iterator(), ToStringTransformer.instance);
     }
 
-    public static String zcat() { return SystemUtils.IS_OS_MAC ? "gzcat" : "zcat"; }
-    public static String zcat(File f) { return (SystemUtils.IS_OS_MAC ? "gzcat" : "zcat") + " " + abs(f); }
+    public static String zcat() { return IS_OS_MAC ? "gzcat" : "zcat"; }
+    public static String zcat(File f) { return (IS_OS_MAC ? "gzcat" : "zcat") + " " + abs(f); }
 
     public static final String[] JAVA_DEBUG_OPTIONS = {"-Xdebug", "-agentlib", "-Xrunjdwp"};
 

src/main/java/org/cobbzilla/util/security/ShaUtil.java

@@ -17,6 +17,7 @@ import java.security.DigestException;
 import java.security.MessageDigest;
 import java.security.NoSuchAlgorithmException;
 
+import static org.apache.commons.lang3.SystemUtils.IS_OS_MAC;
 import static org.cobbzilla.util.daemon.ZillaRuntime.die;
 import static org.cobbzilla.util.io.FileUtil.abs;
 import static org.cobbzilla.util.string.StringUtil.UTF8cs;
@@ -69,7 +70,7 @@ public class ShaUtil {
         final CommandResult result;
         try {
             if (file.length() < SHA256_FILE_USE_SHELL_THRESHHOLD) return sha256_file_java(file);
-            result = exec(new CommandLine("sha256sum").addArgument(abs(file), false));
+            result = exec(shaCommand().addArgument(abs(file), false));
             if (result.isZeroExitStatus()) return split(result.getStdout(), " ").get(0);
 
         } catch (Exception e) {
@@ -80,6 +81,14 @@ public class ShaUtil {
         return die("sha256sum_file: sha256sum "+abs(file)+" exited with status "+result.getExitStatus()+", stderr="+result.getStderr()+", exception="+result.getExceptionString());
     }
 
+    private static CommandLine shaCommand() {
+        if (IS_OS_MAC) {
+            return new CommandLine("shasum").addArgument("-a").addArgument("256");
+        } else {
+            return new CommandLine("sha256sum");
+        }
+    }
+
     public static String sha256_file_java(File file) {
         try {
             @Cleanup final InputStream input = new FileInputStream(file);

src/main/java/org/cobbzilla/util/system/CommandShell.java

@@ -258,7 +258,7 @@ public class CommandShell {
         }
     }
 
-    public static final long totalSystemMemory() { return HARDWARE.getMemory().getTotal(); }
+    public static long totalSystemMemory() { return HARDWARE.getMemory().getTotal(); }
 
     public static String hostname () { return toString("hostname"); }
     public static String domainname() { return toString("hostname -d"); }