cicada.core.StringUtil Maven / Gradle / Ivy

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package cicada.core;

public class StringUtil
{
	public static String DefaultIfNull(String src, String defaultValue)
	{
		if (src == null) return defaultValue;
		return src;
	}

	public static String DefaultIfNullOrEmpty(String src, String defaultValue)
	{
		if (src.isEmpty() || src == null) return defaultValue;
		return src;
	}

	public static String ReplaceWhiteSpace(String src, String newValue, Boolean repeated)
	{
		if (src.isEmpty() || src == null) return src;
		int num = -2147483648;
		StringBuilder stringBuilder = new StringBuilder();
		for (int i = 0; i < src.length(); i++)
		{
			char c = src.charAt(i);
			if (Character.isWhitespace(c))
			{
				if (repeated)
				{
					stringBuilder.append(newValue);
				}
				else
				{
					if (num != i - 1)
					{
						stringBuilder.append(newValue);
					}
					num = i;
				}
			}
			else
			{
				stringBuilder.append(c);
			}
		}
		return stringBuilder.toString();
	}

	public static String TrimStart(String src, String start, Boolean ignoreCase)
	{
		String text = src;
		int len = start.length();
		if (ignoreCase)
		{
			String startTemp = text.substring(0, len);
			if (startTemp.equalsIgnoreCase(start))
			{
				text = text.substring(len);
			}
		}
		else
		{
			if (text.startsWith(start))
			{
				text = text.substring(len);
			}
		}
		return text;
	}

	public static String TrimEnd(String src, String end, Boolean ignoreCase)
	{
		String text = src;
		int len = end.length();
		int totalLen = text.length();
		if (ignoreCase)
		{
			String endTemp = text.substring(totalLen - len, len);
			if (endTemp.equalsIgnoreCase(end))
			{
				text = text.substring(0, totalLen - len);
			}
		}
		else
		{
			if (text.endsWith(end))
			{
				text = text.substring(0, totalLen - len);
			}
		}
		return text;
	}

}