core/src/main/java/org/apache/struts2/util/WildcardHelper.java [306:352]:
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    protected int indexOfArray(int[] r, int rpos, int rend, char[] d, int dpos) {
        // Check if pos and len are legal
        if (rend < rpos) {
            throw new IllegalArgumentException("rend < rpos");
        }

        // If we need to match a zero length string return current dpos
        if (rend == rpos) {
            return (d.length); //?? dpos?
        }

        // If we need to match a 1 char length string do it simply
        if ((rend - rpos) == 1) {
            // Search for the specified character
            for (int x = dpos; x < d.length; x++) {
                if (r[rpos] == d[x]) {
                    return (x);
                }
            }
        }

        // Main string matching loop. It gets executed if the characters to
        // match are less then the characters left in the d buffer
        while (((dpos + rend) - rpos) <= d.length) {
            // Set current startpoint in d
            int y = dpos;

            // Check every character in d for equity. If the string is matched
            // return dpos
            for (int x = rpos; x <= rend; x++) {
                if (x == rend) {
                    return (dpos);
                }

                if (r[x] != d[y++]) {
                    break;
                }
            }

            // Increase dpos to search for the same string at next offset
            dpos++;
        }

        // The remaining chars in d buffer were not enough or the string
        // wasn't matched
        return (-1);
    }
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plugins/tiles/src/main/java/org/apache/tiles/core/util/WildcardHelper.java [332:378]:
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    protected int indexOfArray(int[] r, int rpos, int rend, char[] d, int dpos) {
        // Check if pos and len are legal
        if (rend < rpos) {
            throw new IllegalArgumentException("rend < rpos");
        }

        // If we need to match a zero length string return current dpos
        if (rend == rpos) {
            return (d.length); // ?? dpos?
        }

        // If we need to match a 1 char length string do it simply
        if ((rend - rpos) == 1) {
            // Search for the specified character
            for (int x = dpos; x < d.length; x++) {
                if (r[rpos] == d[x]) {
                    return (x);
                }
            }
        }

        // Main string matching loop. It gets executed if the characters to
        // match are less then the characters left in the d buffer
        while (((dpos + rend) - rpos) <= d.length) {
            // Set current startpoint in d
            int y = dpos;

            // Check every character in d for equity. If the string is matched
            // return dpos
            for (int x = rpos; x <= rend; x++) {
                if (x == rend) {
                    return (dpos);
                }

                if (r[x] != d[y++]) {
                    break;
                }
            }

            // Increase dpos to search for the same string at next offset
            dpos++;
        }

        // The remaining chars in d buffer were not enough or the string
        // wasn't matched
        return (-1);
    }
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