Examples with ListTag net.glowstone.util.nbt.ListTag used on opensource projects

Example 1 with ListTag

use of net.glowstone.util.nbt.ListTag in project Glowstone by GlowstoneMC.

the class Mojangson method parseArray.

/**
 * Parses an Array value from a Mojangson string.
 *
 * @param mojangson The Mojangson string
 * @return a ByteArrayTag value if the array contains byte values, an IntArrayTag value if the
 *     array contains int values or a ListTag with the array's elements.
 * @throws MojangsonParseException if the Mojangson string could not be parsed as an
 *                                 Array value.
 */
public static Tag parseArray(String mojangson) throws MojangsonParseException {
    // Parsing context magic value
    final int parseArrayStart = 0;
    // Parsing context magic value
    final int parseArrayElement = 1;
    // The current context of the parser
    int context = parseArrayStart;
    // Temporary value being parsed, in its raw form
    String tmpval = "";
    // The scope level of the array, this allows coherent nested arrays and compounds.
    int scope = 0;
    // The current character is part of a string inclusion
    boolean inString = false;
    // The element content type.
    TagType tagType = null;
    List<Tag> values = new ArrayList<>();
    for (int index = 0; index < mojangson.length(); index++) {
        char character = mojangson.charAt(index);
        if (character == STRING_QUOTES.getSymbol()) {
            inString = !inString;
        }
        if (character == WHITE_SPACE.getSymbol()) {
            if (!inString) {
                continue;
            }
        }
        if ((character == COMPOUND_START.getSymbol() || character == ARRAY_START.getSymbol()) && !inString) {
            scope++;
        }
        if ((character == COMPOUND_END.getSymbol() || character == ARRAY_END.getSymbol()) && !inString) {
            scope--;
        }
        if (context == parseArrayStart) {
            if (character != ARRAY_START.getSymbol()) {
                throw new MojangsonParseException("Index: " + index + ", symbol: \'" + character + "\'", MojangsonParseException.ParseExceptionReason.UNEXPECTED_SYMBOL);
            }
            context++;
            continue;
        }
        if (context == parseArrayElement) {
            if ((character == ELEMENT_SEPERATOR.getSymbol() || character == ARRAY_END.getSymbol()) && scope <= 1 && !inString) {
                if (tmpval.length() == 0) {
                    continue;
                }
                Tag val = parseTag(tmpval);
                if (tagType == null) {
                    tagType = val.getType();
                } else if (tagType != val.getType()) {
                    throw new MojangsonParseException("Index: " + index + ", value: \'" + tmpval + "\'", MojangsonParseException.ParseExceptionReason.INCOMPATIBLE_TYPE);
                }
                values.add(val);
                tmpval = "";
                continue;
            }
            tmpval += character;
        }
    }
    if (tagType == TagType.BYTE) {
        byte[] bytes = new byte[values.size()];
        for (int i = 0; i < values.size(); i++) {
            bytes[i] = (byte) values.get(i).getValue();
        }
        return new ByteArrayTag(bytes);
    } else if (tagType == TagType.INT) {
        int[] ints = new int[values.size()];
        for (int i = 0; i < values.size(); i++) {
            ints[i] = (int) values.get(i).getValue();
        }
        return new IntArrayTag(ints);
    } else {
        return new ListTag<>(tagType, values);
    }
}

Example 2 with ListTag

use of net.glowstone.util.nbt.ListTag in project Glowstone by GlowstoneMC.

the class Mojangson method fromTag.

/**
 * Creates a Mojangson string from the given List Tag.
 *
 * @param tag the List Tag to convert
 * @return the converted Mojangson string
 */
public static String fromTag(ListTag<Tag> tag) {
    StringBuilder builder = new StringBuilder();
    builder.append(ARRAY_START);
    boolean start = true;
    for (Tag value : tag.getValue()) {
        if (start) {
            start = false;
        } else {
            builder.append(ELEMENT_SEPERATOR);
        }
        builder.append(fromGenericTag(value));
    }
    builder.append(ARRAY_END);
    return builder.toString();
}