org.apache.juneau.config.ConfigMod Maven / Gradle / Ivy
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package org.apache.juneau.config;
import static org.apache.juneau.internal.StringUtils.*;
import java.util.*;
import org.apache.juneau.config.encode.*;
/**
* Identifies the supported modification types for config entries.
*/
public enum ConfigMod {
/**
* Encoded using the registered {@link ConfigEncoder}.
*/
ENCODED("*");
private final String c;
private ConfigMod(String c) {
this.c = c;
}
/**
* Converts an array of modifiers to a modifier string.
*
* @param mods The modifiers.
* @return A modifier string, or an empty string if there are no modifiers.
*/
public static String asString(ConfigMod...mods) {
if (mods.length == 0)
return "";
if (mods.length == 1)
return mods[0].c;
StringBuilder sb = new StringBuilder(mods.length);
for (ConfigMod m : mods)
sb.append(m.c);
return sb.toString();
}
private static ConfigMod fromChar(char c) {
if (c == '*')
return ENCODED;
return null;
}
/**
* Converts a modifier string (e.g. "^*" ) into a list of {@link ConfigMod Modifiers}
* in reverse order of how they appear in the string.
*
* @param s The modifier string.
* @return The list of modifiers, or an empty list if the string is empty or null .
*/
public static List asModifiersReverse(String s) {
if (isEmpty(s))
return Collections.emptyList();
if (s.length() == 1) {
ConfigMod m = fromChar(s.charAt(0));
return m == null ? Collections.emptyList() : Collections.singletonList(m);
}
List l = new ArrayList<>(s.length());
for (int i = s.length()-1; i >= 0; i--) {
ConfigMod m = fromChar(s.charAt(i));
if (m != null)
l.add(m);
}
return l;
}
/**
* Converts a modifier string (e.g. "^*" ) into a list of {@link ConfigMod Modifiers}.
*
* @param s The modifier string.
* @return The list of modifiers, or an empty list if the string is empty or null .
*/
public static List asModifiers(String s) {
if (isEmpty(s))
return Collections.emptyList();
if (s.length() == 1) {
ConfigMod m = fromChar(s.charAt(0));
return m == null ? Collections.emptyList() : Collections.singletonList(m);
}
List l = new ArrayList<>(s.length());
for (int i = 0; i < s.length(); i++) {
ConfigMod m = fromChar(s.charAt(i));
if (m != null)
l.add(m);
}
return l;
}
}