UriUtils.java :  » Client » g2android » net » dahanne » android » g2android » utils » Android Open Source

package net.dahanne.android.g2android.utils;

import java.io.File;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.util.regex.Matcher;
import java.util.regex.Pattern;

import android.app.Activity;
import android.database.Cursor;
import android.net.Uri;
import android.provider.MediaStore;

public class UriUtils {

  public final static String URL_PATTERN = "^(http|https):\\/\\/(?:\\P{M}\\p{M}*)+([\\-\\.]{1}(?:\\P{M}\\p{M}*)+)*\\.[a-z]{2,5}(:[0-9]{1,5})?(\\/.*)?$";
  public final static String IP_ADDRESS_PATTERN = "^(http|https):\\/\\/\\d{1,3}\\.\\d{1,3}\\.\\d{1,3}\\.\\d{1,3}(:[0-9]{1,5})?(\\/.*)?$";

  public static File createFileFromUri(InputStream openInputStream,
      String mimeType) throws FileNotFoundException, IOException {

    String fileExtension = null;
    if (mimeType.equals("image/jpeg")) {
      fileExtension = ".jpg";
    } else if (mimeType.equals("image/png")) {
      fileExtension = ".png";
    } else if (mimeType.equals("image/gif")) {
      fileExtension = ".gif";
    } else {
      fileExtension = ".image";
    }
    File imageFile = File.createTempFile("G2AndroidPhoto", fileExtension);
    OutputStream out = new FileOutputStream(imageFile);
    byte buf[] = new byte[1024];
    int len;
    while ((len = openInputStream.read(buf)) > 0) {
      out.write(buf, 0, len);
    }
    out.close();
    openInputStream.close();
    return imageFile;
  }

  public static File getFileFromUri(Uri uri, Activity activity) {
    String filePath = null;
    String scheme = uri.getScheme();
    filePath = uri.getPath();
    if (filePath != null && scheme != null && scheme.equals("file")) {
      return new File(filePath);
    }

    String[] projection = { MediaStore.Images.ImageColumns.DATA };
    Cursor c = activity.managedQuery(uri, projection, null, null, null);
    if (c != null && c.moveToFirst()) {
      filePath = c.getString(0);
    }
    if (filePath != null) {
      return new File(filePath);
    }
    return null;

  }

  public static String getFileNameFromUri(Uri uri, Activity activity) {
    String[] projection = { MediaStore.Images.ImageColumns.DISPLAY_NAME };
    String fileName = null;
    Cursor c = activity.managedQuery(uri, projection, null, null, null);
    if (c != null && c.moveToFirst()) {
      fileName = c.getString(0);
    }
    return fileName;

  }

  public static boolean checkUrlIsValid(String url) {
    Pattern p = Pattern.compile(URL_PATTERN);
    Matcher m = p.matcher(url);
    if (!m.matches()) {
      // not an url ? maybe an ip address
      p = Pattern.compile(IP_ADDRESS_PATTERN);
      m = p.matcher(url);
      return m.matches();
    }
    return true;
  }

  // bug #25 : for embedded gallery, should not add main.php
  public static boolean isEmbeddedGallery(String url) {
    if (url.contains("action=gallery")) {
      return true;
    }
    return false;
  }

  public static String extractFilenameFromUri(Uri uri, Activity activity) {

    String fileName = null;
    String scheme = uri.getScheme();
    String path = uri.getPath();
    if (path != null && scheme != null && scheme.equals("file")) {
      fileName = path.substring(path.lastIndexOf("/") + 1);
    }

    String[] projection = { MediaStore.Images.ImageColumns.DISPLAY_NAME /* col1 */};

    Cursor c = activity.managedQuery(uri, projection, null, null, null);
    if (c != null && c.moveToFirst()) {
      fileName = c.getString(0);
    }
    return fileName;
  }

}