Java String Unquote unquote(String s, char c)

Description

Useful for unquoting strings, since StringTokenizer won't do it for us.

License

Open Source License

Parameter

Parameter	Description
s	a parameter
c	a parameter

Declaration

public static final String unquote(String s, char c) 

Method Source Code

//package com.java2s;
//License from project: Open Source License 

public class Main {
    /**/* w  w  w.j  a v a 2  s. c  o m*/
     * Useful for unquoting strings, since StringTokenizer won't do it for us.
     * Returns null upon any failure.
     *
     * @param s
     * @param c
     * @return
     */

    public static final String unquote(String s, char c) {

        int firstq = s.indexOf(c);
        int lastq = s.lastIndexOf(c);
        // Indexes valid?
        if (isQuoted(s, c))
            return s.substring(firstq + 1, lastq);

        return null;
    }

    /**
     * Finds index of first element of array matching key. Useful whenever an
     * "indexOf" property is required or you encounter the C-ism [pointer-
     * array_base] used to find array indices in O(1) time. However, since this
     * is just a dumb unsorted search, running time is O(n), so use this method
     * only sparingly and in scenarios where it won't occur very frequently
     * -once per level is probably OK-, but watch out for nested loops, and
     * cache the result whenever possible. Consider adding an index or ID type
     * of field to the searched type if you require to use this property too
     * often.
     *
     * @param array
     * @param key
     * @return
     */

    public static int indexOf(Object[] array, Object key) {
        for (int i = 0; i < array.length; i++) {
            if (array[i] == key) {
                return i;
            }
        }

        return -1;
    }

    public static final boolean isQuoted(String s, char c) {

        int q1 = s.indexOf(c);
        int q2 = s.lastIndexOf(c);
        char c1, c2;

        // Indexes valid?
        if (q1 != -1 && q2 != -1) {
            if (q1 < q2) {
                c1 = s.charAt(q1);
                c2 = s.charAt(q2);
                return (c1 == c2);
            }
        }

        return false;
    }
}

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