Author: ecki
Date: Fri Jan 9 15:13:29 2015
New Revision: 1650554
URL: http://svn.apache.org/r1650554
Log:
[example] VFS Shell: implement 'info' command and print version.
Modified:
commons/proper/vfs/trunk/examples/src/main/java/org/apache/commons/vfs2/example/Shell.java
commons/proper/vfs/trunk/src/changes/changes.xml
Modified:
commons/proper/vfs/trunk/examples/src/main/java/org/apache/commons/vfs2/example/Shell.java
URL:
http://svn.apache.org/viewvc/commons/proper/vfs/trunk/examples/src/main/java/org/apache/commons/vfs2/example/Shell.java?rev=1650554&r1=1650553&r2=1650554&view=diff
==============================================================================
---
commons/proper/vfs/trunk/examples/src/main/java/org/apache/commons/vfs2/example/Shell.java
(original)
+++
commons/proper/vfs/trunk/examples/src/main/java/org/apache/commons/vfs2/example/Shell.java
Fri Jan 9 15:13:29 2015
@@ -17,14 +17,18 @@
package org.apache.commons.vfs2.example;
import java.io.BufferedReader;
+import java.io.File;
import java.io.IOException;
import java.io.InputStreamReader;
import java.nio.charset.Charset;
import java.text.DateFormat;
import java.util.ArrayList;
+import java.util.Collection;
import java.util.Date;
+import java.util.List;
import java.util.StringTokenizer;
+import org.apache.commons.vfs2.Capability;
import org.apache.commons.vfs2.FileContent;
import org.apache.commons.vfs2.FileObject;
import org.apache.commons.vfs2.FileSystemException;
@@ -33,9 +37,14 @@ import org.apache.commons.vfs2.FileType;
import org.apache.commons.vfs2.FileUtil;
import org.apache.commons.vfs2.Selectors;
import org.apache.commons.vfs2.VFS;
+import org.apache.commons.vfs2.operations.FileOperationProvider;
/**
* A simple command-line shell for performing file operations.
+ * <p>
+ * See
+ * <a href="https://wiki.apache.org/commons/VfsExampleShell";>Commons VFS Shell
Examples</a>
+ * in Apache Commons Wiki.
*/
public final class Shell
{
@@ -43,10 +52,10 @@ public final class Shell
private FileObject cwd;
private final BufferedReader reader;
- private Shell() throws FileSystemException
+ private Shell() throws IOException
{
mgr = VFS.getManager();
- cwd = mgr.resolveFile(System.getProperty("user.dir"));
+ cwd = mgr.toFileObject(new File(System.getProperty("user.dir")));
reader = new BufferedReader(new InputStreamReader(System.in,
Charset.defaultCharset()));
}
@@ -66,7 +75,7 @@ public final class Shell
private void go() throws Exception
{
- System.out.println("VFS Shell");
+ System.out.println("VFS Shell " + getVersion(Shell.class));
while (true)
{
final String[] cmd = nextCommand();
@@ -113,7 +122,7 @@ public final class Shell
{
cp(cmd);
}
- else if (cmdName.equalsIgnoreCase("help"))
+ else if (cmdName.equalsIgnoreCase("help") || cmdName.equals("?"))
{
help();
}
@@ -133,12 +142,68 @@ public final class Shell
{
touch(cmd);
}
+ else if (cmdName.equalsIgnoreCase("info"))
+ {
+ info(cmd);
+ }
else
{
- System.err.println("Unknown command \"" + cmdName + "\".");
+ System.err.println("Unknown command \"" + cmdName + "\" (Try
'help').");
}
}
+ private void info(String[] cmd) throws Exception
+ {
+ if (cmd.length > 1)
+ {
+ info(cmd[1]);
+ }
+ else
+ {
+ System.out.println("Default manager: \"" +
mgr.getClass().getName() + "\" version " + getVersion(mgr.getClass()));
+ String[] schemes = mgr.getSchemes();
+ List<String> virtual = new ArrayList<String>();
+ List<String> physical = new ArrayList<String>();
+ for(int i=0; i<schemes.length; i++)
+ {
+ Collection<Capability> caps =
mgr.getProviderCapabilities(schemes[i]);
+ if (caps != null)
+ {
+ if (caps.contains(Capability.VIRTUAL))
+ {
+ virtual.add(schemes[i]);
+ } else {
+ physical.add(schemes[i]);
+ }
+ }
+ }
+ if (!physical.isEmpty())
+ {
+ System.out.println(" Provider Schemes: " + physical);
+ }
+ if (!virtual.isEmpty())
+ {
+ System.out.println(" Virtual Schemes: " + virtual);
+ }
+ }
+ }
+
+ private void info(String scheme) throws Exception
+ {
+ System.out.println("Provider Info for scheme \""+ scheme +"\":");
+ Collection<Capability> caps;
+ caps = mgr.getProviderCapabilities(scheme);
+ if (caps != null && !caps.isEmpty())
+ {
+ System.out.println(" capabilities: " + caps);
+ }
+ FileOperationProvider[] ops = mgr.getOperationProviders(scheme);
+ if (ops != null && ops.length > 0)
+ {
+ System.out.println(" operations: " + ops);
+ }
+ }
+
/**
* Does a 'help' command.
*/
@@ -149,12 +214,12 @@ public final class Shell
System.out.println("cd [folder] Changes current folder.");
System.out.println("cp <src> <dest> Copies a file or folder.");
System.out.println("help Shows this message.");
+ System.out.println("info [scheme] Displays information about
providers.");
System.out.println("ls [-R] [path] Lists contents of a file or
folder.");
System.out.println("pwd Displays current folder.");
System.out.println("rm <path> Deletes a file or folder.");
System.out.println("touch <path> Sets the last-modified time of
a file.");
- System.out.println("exit Exits this program.");
- System.out.println("quit Exits this program.");
+ System.out.println("exit, quit Exits this program.");
}
/**
@@ -355,4 +420,16 @@ public final class Shell
}
return cmd.toArray(new String[cmd.size()]);
}
+
+ private static String getVersion(Class<?> cls)
+ {
+ try
+ {
+ return cls.getPackage().getImplementationVersion();
+ }
+ catch (Exception ignored)
+ {
+ return "N/A";
+ }
+ }
}
Modified: commons/proper/vfs/trunk/src/changes/changes.xml
URL:
http://svn.apache.org/viewvc/commons/proper/vfs/trunk/src/changes/changes.xml?rev=1650554&r1=1650553&r2=1650554&view=diff
==============================================================================
--- commons/proper/vfs/trunk/src/changes/changes.xml (original)
+++ commons/proper/vfs/trunk/src/changes/changes.xml Fri Jan 9 15:13:29 2015
@@ -26,6 +26,9 @@
<!-- <action issue="VFS-443" dev="ggregory" type="update"
due-to="nickallen"> -->
<!-- [Local] Need an easy way to convert from a FileObject to a File.
-->
<!-- </action> -->
+ <action dev="ecki" type="add">
+ [example] make VFS Shell print version and implement new 'info' command.
+ </action>
<action issue="VFS-552" dev="ecki" type="fix">
[sandbox] include vfs-providers.xml in JAR for dynamic registration of
mime and smb providers.
</action>
