add -i (inode format) support to df command

bindings/java/src/org/hyperic/sigar/cmd/Df.java

@@ -48,8 +48,19 @@ public class Df extends SigarCommandBase {
         "Mounted on",
         "Type"
     };
+    //df -i
+    private static final String[] IHEADER = new String[] {
+        "Filesystem",
+        "Inodes",
+        "IUsed",
+        "IFree",
+        "IUse%",
+        "Mounted on",
+        "Type"
+    };
 
     private GetlineCompleter completer;
+    private boolean opt_i;
 
     public Df(Shell shell) {
         super(shell);
@@ -67,7 +78,7 @@ public class Df extends SigarCommandBase {
     }
 
     protected boolean validateArgs(String[] args) {
-        return args.length <= 1;
+        return true;
     }
 
     public String getSyntaxArgs() {
@@ -79,31 +90,42 @@ public class Df extends SigarCommandBase {
     }
 
     public void printHeader() {
-        printf(HEADER);
+        printf(this.opt_i ? IHEADER : HEADER);
     }
 
     public void output(String[] args) throws SigarException {
-        if (args.length == 1) {
+        this.opt_i = false;
+        ArrayList sys = new ArrayList();
+
+        if (args.length > 0) {
             FileSystemMap mounts = this.proxy.getFileSystemMap();
-            String name = FileCompleter.expand(args[0]);
+            for (int i=0; i<args.length; i++) {
+                String arg = args[i];
+                if (arg.equals("-i")) {
+                    this.opt_i = true;
+                    continue;
+                }
+                String name = FileCompleter.expand(arg);
                 FileSystem fs = mounts.getMountPoint(name);
 
-            if (fs != null) {
-                printHeader();
-                output(fs);
-                return;
-            }
-
-            throw new SigarException(args[0] +
+                if (fs == null) {
+                    throw new SigarException(arg +
                                              " No such file or directory");
                 }
-        else {
-            FileSystem[] fslist = this.proxy.getFileSystemList();
-            printHeader();
-            for (int i=0; i<fslist.length; i++) {
-                output(fslist[i]);
+                sys.add(fs);
             }
         }
+        if (sys.size() == 0) {
+            FileSystem[] fslist = this.proxy.getFileSystemList();
+            for (int i=0; i<fslist.length; i++) {
+                sys.add(fslist[i]);
+            }
+        }
+
+        printHeader();
+        for (int i=0; i<sys.size(); i++) {
+            output((FileSystem)sys.get(i));
+        }
     }
 
     public void output(FileSystem fs) throws SigarException {
@@ -119,12 +141,26 @@ public class Df extends SigarCommandBase {
                 }
             }
             usage = this.sigar.getFileSystemUsage(fs.getDirName());
-
+            if (this.opt_i) {
+                used  = usage.getFiles() - usage.getFreeFiles();
+                avail = usage.getFreeFiles();
+                total = usage.getFiles();
+                if (total == 0) {
+                    pct = 0;
+                }
+                else {
+                    long u100 = used * 100;
+                    pct = u100 / total +
+                        ((u100 % total != 0) ? 1 : 0);
+                }
+            }
+            else {
                 used = usage.getTotal() - usage.getFree();
                 avail = usage.getAvail();
                 total = usage.getTotal();
 
                 pct = (long)(usage.getUsePercent() * 100);
+            }
         } catch (SigarException e) {
             //e.g. on win32 D:\ fails with "Device not ready"
             //if there is no cd in the drive.
@@ -152,8 +188,8 @@ public class Df extends SigarCommandBase {
         printf(items);
     }
 
-    private static String formatSize(long size) {
-        return Sigar.formatSize(size * 1024);
+    private String formatSize(long size) {
+        return this.opt_i ? String.valueOf(size) : Sigar.formatSize(size * 1024);
     }
 
     public static void main(String[] args) throws Exception {