/**
* Create a gold price object from a correctly formatted csv file
*
* @param csvFile The csv file downloaded from yahoo
* @throws IOException
*/
private void parseCsvFile(String csvFile) throws IOException {
// read file
byte[] data = com.tools.Tools.readFile(csvFile);
if (data == null) throw new IOException("File could not be read");
String string = new String(data, CHARSET);
// split by commas
ArrayList<String> items = new ArrayList<String>(Arrays.asList(string.split("\\s*,\\s*")));
// make sure has 4 items
if (items.size() != N_FIELDS)
throw new IOException("File is not formatted correctly. Expect 4 fields");
// check ticker
if (!items.get(0).equals(getFullTicker()))
throw new IOException("Ticker symbol is not correct. Received " + items.get(0));
// strip off end of line
items.set(3, items.get(3).replaceAll("\\r\\n", ""));
// create date
SimpleDateFormat format = new SimpleDateFormat("\"MM/dd/yyyy\"\"hh:mma\"", Locale.US);
format.setTimeZone(TimeZone.getTimeZone("US/Eastern"));
try {
date = format.parse(items.get(2) + items.get(3));
} catch (ParseException e) {
throw new IOException("Bad file format: " + items.get(2) + items.get(3));
}
// grab price
price = Double.parseDouble(items.get(1));
}
/**
* Determine which file to write to. It will be a random file on the external directory
*
* @return The file
* @throws IOException
*/
private String getFileToWriteTo() throws IOException {
// determine where to save file
String path = Utils.getExternalStorageTopPath();
if (path == null) throw new IOException("Cannot write to external storage");
// create a random file to write to
path = path + com.tools.Tools.randomString(20) + ".tmp";
return path;
}
/**
* Try to create the thumbnail from the full picture
*
* @param thumbPath the desired thumbnail path
* @param fullFile the path to the full file
* @param maxPixelSize the maximum sixe in pixels for any dimension of the thumbnail.
* @param forceBase2 forcing the downsizing to be powers of 2 (ie 2,4,8). Faster, but obviously
* less specific size is allowable.
* @return true if successful, false otherwise
*/
public static boolean createThumbnailFromFull(
String thumbPath, String fullFile, int maxPixelSize, boolean forceBase2) {
// open the full file
if (fullFile == null || thumbPath == null || fullFile.length() == 0 || thumbPath.length() == 0)
return false;
RandomAccessFile f = null;
try {
f = new RandomAccessFile(fullFile, "r");
} catch (FileNotFoundException e) {
return false;
}
// read the file data
byte[] b = null;
ExifInterface exif = null;
try {
b = new byte[(int) f.length()];
f.read(b);
f.close();
// read the orientaion
exif = new ExifInterface(fullFile);
} catch (IOException e) {
e.printStackTrace();
return false;
}
// grab the rotation
int rotation =
exif.getAttributeInt(ExifInterface.TAG_ORIENTATION, ExifInterface.ORIENTATION_UNDEFINED);
// create the byte array
byte[] thumbnail = com.tools.Tools.makeThumbnail(b, rotation, maxPixelSize, forceBase2);
// save the thumbnail
SuccessReason thumbnailSave =
com.tools.Tools.saveByteDataToFile(
null, thumbnail, "", false, thumbPath, ExifInterface.ORIENTATION_NORMAL, false);
return thumbnailSave.getSuccess();
}
/**
* Read a picture from the given path, return null if unsuffessful <br>
* Make sure to NOT call on main UI thread because it's slow <br>
* Will be properly rotated based on exif data stored in image
*
* @param path
* @return the bitmap
*/
public static Bitmap getThumbnail(String path) {
// open the path if it exists
if (path != null && path.length() != 0 && (new File(path)).exists()) {
// read the bitmap
Bitmap bmp = BitmapFactory.decodeFile(path);
if (bmp == null) return bmp;
// now do the rotation
float angle = com.tools.Tools.getExifOrientationAngle(path);
if (angle != 0) {
Matrix matrix = new Matrix();
matrix.postRotate(angle);
bmp = Bitmap.createBitmap(bmp, 0, 0, bmp.getWidth(), bmp.getHeight(), matrix, true);
}
return bmp;
} else return null;
}
/**
* Return the properly rotated full image, null if can't be found or any other error <br>
* Make sure to only call NOT on main ui thread <br>
* It will be scaled down, so as not to cause memory crash
*
* @param path the path to the file
* @param desiredWidth the desired width of the image, will not necessarily create a bitmap of
* this exact size, but no larger than this
* @param desiredHeight the desired height of the image, will not necessarily create a bitmap of
* this exact size, but no larger than this
* @return The bitmap or null if failed.
*/
public static Bitmap getFullImage(String path, int desiredWidth, int desiredHeight) {
try {
if (path != null && path.length() != 0 && (new File(path)).exists()) {
// make the file
File file = new File(path);
// decode image size
BitmapFactory.Options o = new BitmapFactory.Options();
o.inJustDecodeBounds = true;
BitmapFactory.decodeStream(new FileInputStream(file), null, o);
// find the correct scale size
double scale =
((double)
Math.max((double) o.outHeight / desiredHeight, (double) o.outWidth / desiredWidth));
int intScale = (int) Math.pow(2, Math.ceil(com.tools.MathTools.log2(scale)));
// now actually do the resizeing
BitmapFactory.Options options = new BitmapFactory.Options();
options.inSampleSize = intScale;
Bitmap bitmap = BitmapFactory.decodeStream(new FileInputStream(file), null, options);
float angle = com.tools.Tools.getExifOrientationAngle(path);
// now do the rotation
if (angle != 0) {
Matrix matrix = new Matrix();
matrix.postRotate(angle);
bitmap =
Bitmap.createBitmap(
bitmap, 0, 0, bitmap.getWidth(), bitmap.getHeight(), matrix, true);
}
return bitmap;
} else return null;
} catch (FileNotFoundException e) {
return null;
} catch (Exception e) {
return null;
}
}
