src/main/java/com/xtremelabs/robolectric/shadows/ShadowTextUtils.java


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package com.xtremelabs.robolectric.shadows;

import android.text.TextUtils;
import com.xtremelabs.robolectric.internal.Implementation;
import com.xtremelabs.robolectric.internal.Implements;
import com.xtremelabs.robolectric.util.Join;

import java.util.Collection;

@SuppressWarnings({"UnusedDeclaration"})
@Implements(TextUtils.class)
public class ShadowTextUtils {
    @Implementation
    public static boolean equals(CharSequence a, CharSequence b) {
        return (a == b) || (a instanceof String && a.equals(b));
    }

    @Implementation
    public static CharSequence expandTemplate(CharSequence template,
                                              CharSequence... values) {
        String s = template.toString();
        for (int i = 0, valuesLength = values.length; i < valuesLength; i++) {
            CharSequence value = values[i];
            s = s.replace("^" + (i + 1), value);
        }
        return s;
    }

    @Implementation
    public static boolean isEmpty(CharSequence s) {
      return (s == null || s.length() == 0);
    }

    @Implementation
    public static String join(CharSequence delimiter, Iterable tokens) {
        return Join.join((String) delimiter, (Collection) tokens);
    }

    @Implementation
    public static String join(CharSequence delimiter, Object[] tokens) {
        return Join.join((String) delimiter, tokens);
    }

    @Implementation
    public static boolean isDigitsOnly(CharSequence str) {
        final int len = str.length();
        for (int i = 0; i < len; i++) {
          if (!Character.isDigit(str.charAt(i))) {
            return false;
          }
        }
        return true;
    }
    
    @Implementation
    public static String[] split(String text, String expression) {
    	if(text.length() == 0) {
    		return new String[]{};
    	}
    	
    	return text.split(expression);
    }

    @Implementation
    public static String htmlEncode(String s) {
        StringBuilder sb = new StringBuilder();
        char c;
        for (int i = 0; i < s.length(); i++) {
            c = s.charAt(i);
            switch (c) {
                case '<':
                    sb.append("&lt;"); //$NON-NLS-1$
                    break;
                case '>':
                    sb.append("&gt;"); //$NON-NLS-1$
                    break;
                case '&':
                    sb.append("&amp;"); //$NON-NLS-1$
                    break;
                case '\'':
                    sb.append("&apos;"); //$NON-NLS-1$
                    break;
                case '"':
                    sb.append("&quot;"); //$NON-NLS-1$
                    break;
                default:
                    sb.append(c);
            }
        }
        return sb.toString();
    }
}