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Decouple PathHelper and SFTPEngine, introduce Canonicalizer interface

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This commit is contained in:
Shikhar Bhushan
2012-05-12 11:06:36 +01:00
parent 431be8e7c7
commit d2b9248535
3 changed files with 27 additions and 14 deletions
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22
src/main/java/net/schmizz/sshj/sftp/PathHelper.java
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@@ -21,13 +21,18 @@ public class PathHelper {
public static final String DEFAULT_PATH_SEPARATOR = "/";
private final SFTPEngine engine;
private final Canonicalizer canonicalizer;
private final String pathSep;
private String dotDir;
public PathHelper(SFTPEngine engine, String pathSep) {
this.engine = engine;
public interface Canonicalizer {
String canonicalize(String path)
throws IOException;
}
public PathHelper(Canonicalizer canonicalizer, String pathSep) {
this.canonicalizer = canonicalizer;
this.pathSep = pathSep;
}
@@ -56,14 +61,14 @@ public class PathHelper {
if (lastSlash == -1) // Relative path
if (path.equals(".."))
return getComponents(canon(path));
return getComponents(canonicalizer.canonicalize(path));
else
return getComponents(getDotDir(), path);
final String name = path.substring(lastSlash + pathSep.length());
if (name.equals(".") || name.equals(".."))
return getComponents(canon(path));
return getComponents(canonicalizer.canonicalize(path));
else {
final String parent = path.substring(0, lastSlash);
return getComponents(parent, name);
@@ -72,12 +77,7 @@ public class PathHelper {
private synchronized String getDotDir()
throws IOException {
return (dotDir != null) ? dotDir : (dotDir = canon("."));
}
private String canon(String path)
throws IOException {
return engine.canonicalize(path);
return (dotDir != null) ? dotDir : (dotDir = canonicalizer.canonicalize("."));
}
}

8
src/main/java/net/schmizz/sshj/sftp/SFTPEngine.java
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@@ -61,7 +61,13 @@ public class SFTPEngine
sub = ssh.startSession().startSubsystem("sftp");
out = sub.getOutputStream();
reader = new PacketReader(this);
pathHelper = new PathHelper(this, pathSep);
pathHelper = new PathHelper(new PathHelper.Canonicalizer() {
@Override
public String canonicalize(String path)
throws IOException {
return SFTPEngine.this.canonicalize(path);
}
}, pathSep);
}
public SFTPEngine init()

11
src/test/java/net/schmizz/sshj/sftp/SFTPClientTest.java
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@@ -17,13 +17,20 @@ public class SFTPClientTest {
@Before
public void setPathHelper() throws Exception {
PathHelper helper = new PathHelper(sftpEngine, DEFAULT_PATH_SEPARATOR);
PathHelper helper = new PathHelper(new PathHelper.Canonicalizer() {
@Override
public String canonicalize(String path)
throws IOException {
if (path.equals("."))
return "/workingdirectory";
return path;
}
}, DEFAULT_PATH_SEPARATOR);
when(sftpEngine.getPathHelper()).thenReturn(helper);
}
@Before
public void setRemoteWorkingDirectory() throws IOException {
when(sftpEngine.canonicalize(".")).thenReturn("/workingdirectory");
FileAttributes isADirectory = new FileAttributes.Builder().withType(FileMode.Type.DIRECTORY).build();
when(sftpEngine.stat("/workingdirectory")).thenReturn(isADirectory);
}