TabooLib/src/main/java/me/skymc/taboolib/json/CDL.java

package me.skymc.taboolib.json;

public class CDL {

    private static String getValue(JSONTokener x) throws JSONException {
        char c;
        char q;
        StringBuffer sb;
        do {
            c = x.next();
        } while (c == ' ' || c == '\t');
        switch (c) {
            case 0:
                return null;
            case '"':
            case '\'':
                q = c;
                sb = new StringBuffer();
                for (; ; ) {
                    c = x.next();
                    if (c == q) {
                        break;
                    }
                    if (c == 0 || c == '\n' || c == '\r') {
                        throw x.syntaxError("Missing close quote '" + q + "'.");
                    }
                    sb.append(c);
                }
                return sb.toString();
            case ',':
                x.back();
                return "";
            default:
                x.back();
                return x.nextTo(',');
        }
    }

    public static JSONArray rowToJSONArray(JSONTokener x) throws JSONException {
        JSONArray ja = new JSONArray();
        for (; ; ) {
            String value = getValue(x);
            char c = x.next();
            if (value == null ||
                    (ja.length() == 0 && value.length() == 0 && c != ',')) {
                return null;
            }
            ja.put(value);
            while (c != ',') {
                if (c != ' ') {
                    if (c == '\n' || c == '\r' || c == 0) {
                        return ja;
                    }
                    throw x.syntaxError("Bad character '" + c + "' (" +
                            (int) c + ").");
                }
                c = x.next();
            }
        }
    }

    public static JSONObject rowToJSONObject(JSONArray names, JSONTokener x)
            throws JSONException {
        JSONArray ja = rowToJSONArray(x);
        return ja != null ? ja.toJSONObject(names) : null;
    }

    public static String rowToString(JSONArray ja) {
        StringBuilder sb = new StringBuilder();
        for (int i = 0; i < ja.length(); i += 1) {
            if (i > 0) {
                sb.append(',');
            }
            Object object = ja.opt(i);
            if (object != null) {
                String string = object.toString();
                if (string.length() > 0 && (string.indexOf(',') >= 0 ||
                        string.indexOf('\n') >= 0 || string.indexOf('\r') >= 0 ||
                        string.indexOf(0) >= 0 || string.charAt(0) == '"')) {
                    sb.append('"');
                    int length = string.length();
                    for (int j = 0; j < length; j += 1) {
                        char c = string.charAt(j);
                        if (c >= ' ' && c != '"') {
                            sb.append(c);
                        }
                    }
                    sb.append('"');
                } else {
                    sb.append(string);
                }
            }
        }
        sb.append('\n');
        return sb.toString();
    }

    public static JSONArray toJSONArray(String string) throws JSONException {
        return toJSONArray(new JSONTokener(string));
    }

    public static JSONArray toJSONArray(JSONTokener x) throws JSONException {
        return toJSONArray(rowToJSONArray(x), x);
    }

    public static JSONArray toJSONArray(JSONArray names, String string)
            throws JSONException {
        return toJSONArray(names, new JSONTokener(string));
    }

    public static JSONArray toJSONArray(JSONArray names, JSONTokener x)
            throws JSONException {
        if (names == null || names.length() == 0) {
            return null;
        }
        JSONArray ja = new JSONArray();
        for (; ; ) {
            JSONObject jo = rowToJSONObject(names, x);
            if (jo == null) {
                break;
            }
            ja.put(jo);
        }
        if (ja.length() == 0) {
            return null;
        }
        return ja;
    }

    public static String toString(JSONArray ja) throws JSONException {
        JSONObject jo = ja.optJSONObject(0);
        if (jo != null) {
            JSONArray names = jo.names();
            if (names != null) {
                return rowToString(names) + toString(names, ja);
            }
        }
        return null;
    }

    public static String toString(JSONArray names, JSONArray ja)
            throws JSONException {
        if (names == null || names.length() == 0) {
            return null;
        }
        StringBuilder sb = new StringBuilder();
        for (int i = 0; i < ja.length(); i += 1) {
            JSONObject jo = ja.optJSONObject(i);
            if (jo != null) {
                sb.append(rowToString(jo.toJSONArray(names)));
            }
        }
        return sb.toString();
    }
}