package org.jabref.logic.layout;
import java.util.ArrayList;
import java.util.List;
/**
* This is an abstract implementation of ParamLayoutFormatter, which provides some
* functionality for the handling of argument strings.
*/
public abstract class AbstractParamLayoutFormatter implements ParamLayoutFormatter {
private static final char SEPARATOR = ',';
protected AbstractParamLayoutFormatter() {
}
/**
* Parse an argument string and return the parts of the argument. The parts are
* separated by commas, and escaped commas are reduced to literal commas.
* @param arg The argument string.
* @return A list of strings representing the parts of the argument.
*/
protected static List<String> parseArgument(String arg) {
List<String> parts = new ArrayList<>();
StringBuilder current = new StringBuilder();
boolean escaped = false;
for (int i = 0; i < arg.length(); i++) {
if ((arg.charAt(i) == AbstractParamLayoutFormatter.SEPARATOR) && !escaped) {
parts.add(current.toString());
current = new StringBuilder();
} else if (arg.charAt(i) == '\\') {
if (escaped) {
escaped = false;
current.append(arg.charAt(i));
} else {
escaped = true;
}
} else if (escaped) {
// Handle newline and tab:
if (arg.charAt(i) == 'n') {
current.append('\n');
} else if (arg.charAt(i) == 't') {
current.append('\t');
} else {
if ((arg.charAt(i) != ',') && (arg.charAt(i) != '"')) {
current.append('\\');
}
current.append(arg.charAt(i));
}
escaped = false;
} else {
current.append(arg.charAt(i));
}
}
parts.add(current.toString());
return parts;
}
}