--- /dev/null
+package org.json;
+
+/*
+Copyright (c) 2002 JSON.org
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+The Software shall be used for Good, not Evil.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.
+ */
+
+/**
+ * This provides static methods to convert comma delimited text into a
+ * JSONArray, and to convert a JSONArray into comma delimited text. Comma
+ * delimited text is a very popular format for data interchange. It is
+ * understood by most database, spreadsheet, and organizer programs.
+ * <p>
+ * Each row of text represents a row in a table or a data record. Each row
+ * ends with a NEWLINE character. Each row contains one or more values.
+ * Values are separated by commas. A value can contain any character except
+ * for comma, unless is is wrapped in single quotes or double quotes.
+ * <p>
+ * The first row usually contains the names of the columns.
+ * <p>
+ * A comma delimited list can be converted into a JSONArray of JSONObjects.
+ * The names for the elements in the JSONObjects can be taken from the names
+ * in the first row.
+ * @author JSON.org
+ * @version 2016-05-01
+ */
+public class CDL {
+
+ /**
+ * Get the next value. The value can be wrapped in quotes. The value can
+ * be empty.
+ * @param x A JSONTokener of the source text.
+ * @return The value string, or null if empty.
+ * @throws JSONException if the quoted string is badly formed.
+ */
+ 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) {
+ //Handle escaped double-quote
+ char nextC = x.next();
+ if(nextC != '\"') {
+ // if our quote was the end of the file, don't step
+ if(nextC > 0) {
+ x.back();
+ }
+ 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(',');
+ }
+ }
+
+ /**
+ * Produce a JSONArray of strings from a row of comma delimited values.
+ * @param x A JSONTokener of the source text.
+ * @return A JSONArray of strings.
+ * @throws JSONException
+ */
+ 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);
+ for (;;) {
+ if (c == ',') {
+ break;
+ }
+ if (c != ' ') {
+ if (c == '\n' || c == '\r' || c == 0) {
+ return ja;
+ }
+ throw x.syntaxError("Bad character '" + c + "' (" +
+ (int)c + ").");
+ }
+ c = x.next();
+ }
+ }
+ }
+
+ /**
+ * Produce a JSONObject from a row of comma delimited text, using a
+ * parallel JSONArray of strings to provides the names of the elements.
+ * @param names A JSONArray of names. This is commonly obtained from the
+ * first row of a comma delimited text file using the rowToJSONArray
+ * method.
+ * @param x A JSONTokener of the source text.
+ * @return A JSONObject combining the names and values.
+ * @throws JSONException
+ */
+ public static JSONObject rowToJSONObject(JSONArray names, JSONTokener x)
+ throws JSONException {
+ JSONArray ja = rowToJSONArray(x);
+ return ja != null ? ja.toJSONObject(names) : null;
+ }
+
+ /**
+ * Produce a comma delimited text row from a JSONArray. Values containing
+ * the comma character will be quoted. Troublesome characters may be
+ * removed.
+ * @param ja A JSONArray of strings.
+ * @return A string ending in NEWLINE.
+ */
+ 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();
+ }
+
+ /**
+ * Produce a JSONArray of JSONObjects from a comma delimited text string,
+ * using the first row as a source of names.
+ * @param string The comma delimited text.
+ * @return A JSONArray of JSONObjects.
+ * @throws JSONException
+ */
+ public static JSONArray toJSONArray(String string) throws JSONException {
+ return toJSONArray(new JSONTokener(string));
+ }
+
+ /**
+ * Produce a JSONArray of JSONObjects from a comma delimited text string,
+ * using the first row as a source of names.
+ * @param x The JSONTokener containing the comma delimited text.
+ * @return A JSONArray of JSONObjects.
+ * @throws JSONException
+ */
+ public static JSONArray toJSONArray(JSONTokener x) throws JSONException {
+ return toJSONArray(rowToJSONArray(x), x);
+ }
+
+ /**
+ * Produce a JSONArray of JSONObjects from a comma delimited text string
+ * using a supplied JSONArray as the source of element names.
+ * @param names A JSONArray of strings.
+ * @param string The comma delimited text.
+ * @return A JSONArray of JSONObjects.
+ * @throws JSONException
+ */
+ public static JSONArray toJSONArray(JSONArray names, String string)
+ throws JSONException {
+ return toJSONArray(names, new JSONTokener(string));
+ }
+
+ /**
+ * Produce a JSONArray of JSONObjects from a comma delimited text string
+ * using a supplied JSONArray as the source of element names.
+ * @param names A JSONArray of strings.
+ * @param x A JSONTokener of the source text.
+ * @return A JSONArray of JSONObjects.
+ * @throws JSONException
+ */
+ 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;
+ }
+
+
+ /**
+ * Produce a comma delimited text from a JSONArray of JSONObjects. The
+ * first row will be a list of names obtained by inspecting the first
+ * JSONObject.
+ * @param ja A JSONArray of JSONObjects.
+ * @return A comma delimited text.
+ * @throws JSONException
+ */
+ 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;
+ }
+
+ /**
+ * Produce a comma delimited text from a JSONArray of JSONObjects using
+ * a provided list of names. The list of names is not included in the
+ * output.
+ * @param names A JSONArray of strings.
+ * @param ja A JSONArray of JSONObjects.
+ * @return A comma delimited text.
+ * @throws JSONException
+ */
+ public static String toString(JSONArray names, JSONArray ja)
+ throws JSONException {
+ if (names == null || names.length() == 0) {
+ return null;
+ }
+ StringBuffer sb = new StringBuffer();
+ 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();
+ }
+}
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