Test Set for Java Snippet 1

Snippet:

public static String humanReadableByteCount(long bytes, boolean si) {
    int unit = si ? 1000 : 1024;
    if (bytes < unit) return bytes + " B";
    int exp = (int) (Math.log(bytes) / Math.log(unit));
    String pre = (si ? "kMGTPE" : "KMGTPE").charAt(exp-1) + (si ? "" : "i");
    return String.format("%.1f %sB", bytes / Math.pow(unit, exp), pre);
}

Answer to question “How to convert byte size into human readable format in java?” on Stack Overflow by user aioobe.

Regular Expression:

((?i:String[\s]+\w+\([ˆ\{]*long[ˆ\{]+\)[\s]*\{[\s\S]+if
[\s]*\([ˆ<]+<[ˆ\)]+\)[\s\S]*return[ˆ;]+\+[ˆ;]*\”\ B\”
[\s\S]+int[\s][ˆ\=]+\=[\s]*\([\s]*int[\s]*\)[\s]*\([\s]*
Math[\s]*\.[\s]*log[\s]*\([ˆ\)]+\)[\s]*\/[\s]*Math[\s]*
\.[\s]*log[\s]*\([ˆ\)]+\)[\s]*\)[\s\S]+return[ˆ\}]+
String[\s]*\.[\s]*format[\s]*\([ˆ\}]+\}))

Matched Files:

File 1:

//http://stackoverflow.com/a/3758880
@SuppressLint("DefaultLocale")
public static String humanReadableByteCount(long bytes, boolean si) {
    int unit = si ? 1000 : 1024;
    if (bytes < unit) return bytes + " B";
    int exp = (int) (Math.log(bytes) / Math.log(unit));
    String pre = (si ? "kMGTPE" : "KMGTPE").charAt(exp-1) + (si ? "" : "i");
    return String.format("%.1f %sB", bytes / Math.pow(unit, exp), pre);
}

File 2:

/**
 * Returns a human-readable representation of a given number of bytes.
 * @param bytes the number of bytes
 * @return the string representation
 * @author aioobe (http://stackoverflow.com/a/3758880)
 */
public static String bytesToString(long bytes) {
	if (bytes < 1024)
		return bytes + " B";
	int exp = (int) (Math.log(bytes) / Math.log(1024));
	char pre = "KMGTPE".charAt(exp - 1);
	return String.format("%.1f %cB", bytes / Math.pow(1024, exp), pre);
}   

File 3:

  // from http://stackoverflow.com/a/3758880
  private String humanReadableByteCount(long bytes, boolean si) {
    int unit = si ? 1000 : 1024;
    if (bytes < unit) return bytes + " B";
    int exp = (int) (Math.log(bytes) / Math.log(unit));
    String pre = (si ? "kMGTPE" : "KMGTPE").charAt(exp-1) + (si ? "" : "i");
    return String.format("%.1f %sB", bytes / Math.pow(unit, exp), pre);
}

File 5:

//http://stackoverflow.com/a/3758880
public static String humanReadableSize(long bytes) {
    if (bytes < 1024) return bytes + " B";
    int exp = (int) (Math.log(bytes) / Math.log(1024));
    return String.format(Locale.US, "%s %siB",
            READABLE_DECIMAL_FORMAT.format(bytes / Math.pow(1024, exp)), UNITS.charAt(exp - 1));
}

File 6:

// http://stackoverflow.com/a/3758880/1166946
public static String humanReadableByteCount(final long bytes) {
    final int unit = 1024;
    if (bytes < unit) {
        return bytes + " B";
    }

    int exp = (int) (Math.log(bytes) / Math.log(unit));
    final String pre = "KMGTPE".charAt(exp - 1) + "i";

    return String.format("%3.0f %sB", bytes / Math.pow(unit, exp), pre);
}

File 7:

// read more from here: http://stackoverflow.com/a/3758880/2600042
public static String humanReadableByteCount(long bytes, boolean si) {
    int unit = si ? 1000 : 1024;
    if (bytes < unit) return bytes + " B";
    int exp = (int) (Math.log(bytes) / Math.log(unit));
    String pre = (si ? "kMGTPE" : "KMGTPE").charAt(exp - 1) + (si ? "" : "i");
    return String.format("%.1f %sB", bytes / Math.pow(unit, exp), pre);
}

File 8:

/**
 * Human-friendly size formatter
 * 
 * @param bytes
 * @param si
 * @return
 */
public static String formatBytes(long bytes, boolean si) {
    // http://stackoverflow.com/a/3758880/267482
    int unit = si ? 1000 : 1024;
    if (bytes < unit) return bytes + " B";
    int exp = (int) (Math.log(bytes) / Math.log(unit));
    String pre = (si ? "kMGTPE" : "KMGTPE").charAt(exp-1) + (si ? "" : "i");
    return String.format("%.1f %sB", bytes / Math.pow(unit, exp), pre);
}

File 9:

  // http://stackoverflow.com/a/3758880
  public static String size(long bytes, boolean si) {
    int unit = si ? 1000 : 1024;
    if (bytes < unit) return bytes + " B";
    int exp = (int) (Math.log(bytes) / Math.log(unit));
    String pre = (si ? "kMGTPE" : "KMGTPE").charAt(exp-1) + (si ? "" : "i");
    return String.format("%.1f %sB", bytes / Math.pow(unit, exp), pre);
}

File 10:

/**
 * http://stackoverflow.com/a/3758880
 * 
 * @param bytes
 * @param si
 * @return
 */
public static String humanReadableByteCount(long bytes, boolean si) {
	int unit = si ? 1000 : 1024;
	if (bytes < unit)
		return bytes + " B";
	int exp = (int) (Math.log(bytes) / Math.log(unit));
	String pre = (si ? "kMGTPE" : "KMGTPE").charAt(exp - 1) + (si ? "" : "i");
	return String.format("%.1f %sB", bytes / Math.pow(unit, exp), pre); }

Not Matched:

File 4:

/**
 * Formats a file size.
 * @param size the file size in bytes
 * @return formatted file size, e.g. 1 KB, 2 MB, etc
 */
public static String formatSize(Long size) {
    if (size == null) {
        return null;
    }

    // Based on code by aioobe, http://stackoverflow.com/a/3758880
    int unit = 1024;
    if (size < unit) {
        return String.format("%d B", size);
    }

    int exp = (int) (Math.log(size) / Math.log(unit));
    return String.format("%.2f %cB", size / Math.pow(unit, exp), "KMGTPE".charAt(exp - 1));
}