/*

* This file is part of NodeBox.

*

* Copyright (C) 2008 Frederik De Bleser (frederik@pandora.be)

*

* NodeBox is free software: you can redistribute it and/or modify

* it under the terms of the GNU General Public License as published by

* the Free Software Foundation, either version 3 of the License, or

* (at your option) any later version.

*

* NodeBox is distributed in the hope that it will be useful,

* but WITHOUT ANY WARRANTY; without even the implied warranty of

* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the

* GNU General Public License for more details.

*

* You should have received a copy of the GNU General Public License

* along with NodeBox. If not, see <http://www.gnu.org/licenses/>.

*/

package nodebox.util;

import java.util.List;

import java.util.Locale;

public class StringUtils {

public static String humanizeName(String name) {

StringBuffer sb = new StringBuffer();

String[] tokens = name.split("_");

for (String t : tokens) {

if (t.length() == 0) continue;

sb.append(t.substring(0, 1).toUpperCase(Locale.US));

sb.append(t.substring(1));

sb.append(" ");

}

return sb.toString().trim();

}

public static String humanizeConstant(String constant) {

return humanizeName(constant.toLowerCase(Locale.US));

}

public static String join(List items, String separator) {

StringBuilder sb = new StringBuilder();

for (int i = 0; i < items.size(); i++) {

boolean lastItem = i == items.size() - 1;

sb.append(items.get(i));

if (!lastItem) {

sb.append(separator);

}

}

return sb.toString();

}

/**

* Given a position of a numeric character a text stream, finds and returns the left and right edges of the

* entire number.

*

* @param text

* @param index

* @return int[]{left, right} or null

*/

public static int[] numberRange(String text, int index) {

if (index < 0 || index >= text.length()) return null;

if (!isNumeric(text.charAt(index))) return null;

int left = index;

int right = index;

// Left edge

while (left > 0 && isNumeric(text.charAt(left - 1))) {

left--;

}

// Right edge

while (right < text.length() - 1 && isNumeric(text.charAt(right + 1))) {

right++;

}

return new int[]{left, right};

}

/**

* Given the numberRange obtained by numberRange, returns the number as a string.

*

* @param text full text

* @param numberRange range obtained by numberRange method

* @return a String containing the number

* @see #numberRange(String, int)

*/

public static String numberForRange(String text, int[] numberRange) {

// substring returns a string that doesn't contain the end character,

// so add one to the range.

return text.substring(numberRange[0], numberRange[1] + 1);

}

/**

* Returns the true if the given char is a number (between 0 and 9)

*

* @param c the character to test

* @return true if the given char is a number, false otherwise.

*/

public static boolean isNumeric(char c) {

return c >= '0' && c <= '9';

}

}