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package cgeo.geocaching;
import java.io.File;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;
import org.apache.http.HttpEntity;
import org.apache.http.HttpResponse;
import org.apache.http.client.HttpClient;
import org.apache.http.client.methods.HttpGet;
import org.apache.http.entity.BufferedHttpEntity;
import org.apache.http.impl.client.DefaultHttpClient;
import android.util.Log;
public class cgMapImg {
/**
* in my tests the "no image available" image had 5470 bytes, while "street only" maps had at least 20000 bytes
*/
private static final int MIN_MAP_IMAGE_BYTES = 6000;
private String geocode = null;
public cgMapImg(String geocodeIn) {
geocode = geocodeIn;
if (geocode != null && geocode.length() > 0) {
final String dirName = cgSettings.getStorage() + geocode + "/";
File dir = null;
dir = new File(cgSettings.getStorage());
if (dir.exists() == false) {
dir.mkdirs();
}
dir = new File(dirName);
if (dir.exists() == false) {
dir.mkdirs();
}
dir = null;
}
}
public void getDrawable(String url, int level) {
if (url == null || url.length() == 0) {
return;
}
if (geocode == null || geocode.length() == 0) {
return;
}
final String fileName = cgSettings.getStorage() + geocode + "/map_" + level;
HttpClient client = null;
HttpGet getMethod = null;
HttpResponse httpResponse = null;
HttpEntity entity = null;
BufferedHttpEntity bufferedEntity = null;
boolean ok = false;
for (int i = 0; i < 3; i ++) {
if (i > 0) Log.w(cgSettings.tag, "cgMapImg.getDrawable: Failed to download data, retrying. Attempt #" + (i + 1));
try {
client = new DefaultHttpClient();
getMethod = new HttpGet(url);
httpResponse = client.execute(getMethod);
entity = httpResponse.getEntity();
// if image is to small, don't download and save, there is no map data for this zoom level
long contentSize = entity.getContentLength();
if (contentSize > 0 && contentSize <= MIN_MAP_IMAGE_BYTES) {
break;
}
bufferedEntity = new BufferedHttpEntity(entity);
if (bufferedEntity != null) {
InputStream is = (InputStream)bufferedEntity.getContent();
FileOutputStream fos = new FileOutputStream(fileName);
int fileSize = 0;
try {
byte[] buffer = new byte[4096];
int bytesRead;
while ((bytesRead = is.read(buffer)) != -1) {
fos.write(buffer, 0, bytesRead);
fileSize += bytesRead;
}
fos.flush();
ok = true;
} catch (IOException e) {
Log.e(cgSettings.tag, "cgMapImg.getDrawable (saving to cache): " + e.toString());
} finally {
is.close();
fos.close();
}
bufferedEntity = null;
// delete image if it has no contents
if (ok && fileSize < MIN_MAP_IMAGE_BYTES) {
(new File(fileName)).delete();
}
}
if (ok == true) {
break;
}
} catch (Exception e) {
Log.e(cgSettings.tag, "cgMapImg.getDrawable (downloading from web): " + e.toString());
}
}
}
}
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