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Code Issues Packages Projects Releases Wiki Activity

Following File API spec.

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This commit is contained in:
macdonst
2010-11-20 02:25:24 +08:00
parent af5c5dc021
commit 50b435c4d1
4 changed files with 295 additions and 56 deletions
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framework/src/com/phonegap/FileUtils.java
+53 -13
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@@ -13,6 +13,7 @@ import java.nio.channels.FileChannel;
import org.apache.commons.codec.binary.Base64;
import org.json.JSONArray;
import org.json.JSONException;
import org.json.JSONObject;
import com.phonegap.api.Plugin;
import com.phonegap.api.PluginResult;
@@ -82,6 +83,9 @@ public class FileUtils extends Plugin {
else if (action.equals("createDirectory")) {
boolean b = DirectoryManager.createDirectory(args.getString(0));
return new PluginResult(status, b);
}
else if (action.equals("getRootPaths")) {
return new PluginResult(status, DirectoryManager.getRootPaths());
}
else if (action.equals("readAsText")) {
try {
@@ -118,9 +122,10 @@ public class FileUtils extends Plugin {
return new PluginResult(PluginResult.Status.ERROR, FileUtils.NOT_READABLE_ERR);
}
}
else if (action.equals("truncate")) {
else if (action.equals("write")) {
try {
this.truncateFile(args.getString(0), args.getLong(1));
long fileSize = this.write(args.getString(0), args.getString(1), args.getLong(2));
return new PluginResult(status, fileSize);
} catch (FileNotFoundException e) {
e.printStackTrace();
return new PluginResult(PluginResult.Status.ERROR, FileUtils.NOT_FOUND_ERR);
@@ -129,6 +134,22 @@ public class FileUtils extends Plugin {
return new PluginResult(PluginResult.Status.ERROR, FileUtils.NOT_READABLE_ERR);
}
}
else if (action.equals("truncate")) {
try {
long fileSize = this.truncateFile(args.getString(0), args.getLong(1));
return new PluginResult(status, fileSize);
} catch (FileNotFoundException e) {
e.printStackTrace();
return new PluginResult(PluginResult.Status.ERROR, FileUtils.NOT_FOUND_ERR);
} catch (IOException e) {
e.printStackTrace();
return new PluginResult(PluginResult.Status.ERROR, FileUtils.NOT_READABLE_ERR);
}
}
else if (action.equals("getFile")) {
JSONObject obj = DirectoryManager.getFile(args.getString(0));
return new PluginResult(status, obj);
}
return new PluginResult(status, result);
} catch (JSONException e) {
e.printStackTrace();
@@ -169,15 +190,14 @@ public class FileUtils extends Plugin {
* @throws FileNotFoundException, IOException
*/
public String readAsText(String filename, String encoding) throws FileNotFoundException, IOException {
StringBuilder data = new StringBuilder();
FileInputStream fis = new FileInputStream(filename);
BufferedReader reader = new BufferedReader(new InputStreamReader(fis, encoding), 1024);
String line;
while ((line = reader.readLine()) != null) {
data.append(line);
data.append('\n');
}
return data.toString();
byte[] bytes = new byte[1000];
BufferedInputStream bis = new BufferedInputStream(new FileInputStream(filename), 1024);
ByteArrayOutputStream bos = new ByteArrayOutputStream();
int numRead = 0;
while ((numRead = bis.read(bytes, 0, 1000)) >= 0) {
bos.write(bytes, 0, numRead);
}
return new String(bos.toByteArray(), encoding);
}
/**
@@ -225,6 +245,23 @@ public class FileUtils extends Plugin {
out.close();
}
/**
* Write contents of file.
*
* @param filename The name of the file.
* @param data The contents of the file.
* @param offset The position to begin writing the file.
* @throws FileNotFoundException, IOException
*/
public long write(String filename, String data, long offset) throws FileNotFoundException, IOException {
RandomAccessFile file = new RandomAccessFile(filename, "rw");
file.seek(offset);
file.writeBytes(data);
file.close();
return data.length();
}
/**
* Truncate the file to size
@@ -233,13 +270,16 @@ public class FileUtils extends Plugin {
* @param size
* @throws FileNotFoundException, IOException
*/
private void truncateFile(String filename, long size) throws FileNotFoundException, IOException {
private long truncateFile(String filename, long size) throws FileNotFoundException, IOException {
RandomAccessFile raf = new RandomAccessFile(filename, "rw");
if (raf.length() >= size) {
FileChannel channel = raf.getChannel();
channel.truncate(size);
return size;
}
return raf.length();
}
}