/*
* LingPipe v. 3.9
* Copyright (C) 2003-2010 Alias-i
*
* This program is licensed under the Alias-i Royalty Free License
* Version 1 WITHOUT ANY WARRANTY, without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the Alias-i
* Royalty Free License Version 1 for more details.
*
* You should have received a copy of the Alias-i Royalty Free License
* Version 1 along with this program; if not, visit
* http://alias-i.com/lingpipe/licenses/lingpipe-license-1.txt or contact
* Alias-i, Inc. at 181 North 11th Street, Suite 401, Brooklyn, NY 11211,
* +1 (718) 290-9170.
*/
//package com.aliasi.util;
import java.io.DataInput;
import java.io.DataOutput;
import java.io.IOException;
import java.text.DecimalFormat;
/**
* Static utility methods for processing strings, characters and
* string buffers.
*
* @author Bob Carpenter
* @version 4.0.1
* @since LingPipe1.0
* @see java.lang.Character
* @see java.lang.String
* @see java.lang.StringBuilder
*/
public class Strings {
/**
* Return a displayable version of the character sequence,
* followed by integer positions at various powers of 10.
* For instance, for the input string \code{John ran home.}, the
* output is
*
*
* John ran home.
* 01234567890123
* 0 1
*
*
* This allows easy access to the index of positions in the
* string.
*
* @param in Input sequence to annotate.
* @return The input sequence followed by indexing positions.
*/
public static String textPositions(CharSequence in) {
StringBuilder sb = new StringBuilder();
sb.append(in);
for (int base = 1; base <= in.length(); base *= 10) {
sb.append('\n');
for (int i = 0; i < in.length(); ++i)
sb.append(i % base == 0
? Integer.toString((i/base)%10)
: " ");
}
return sb.toString();
}
}