forked from stleary/JSON-java
-
Notifications
You must be signed in to change notification settings - Fork 0
Expand file tree
/
Copy pathCDL.java
More file actions
382 lines (359 loc) · 14 KB
/
CDL.java
File metadata and controls
382 lines (359 loc) · 14 KB
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
package org.json;
/*
Public Domain.
*/
/**
* This provides static methods to convert comma (or otherwise) delimited text into a
* JSONArray, and to convert a JSONArray into comma (or otherwise) 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 it 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 {
/**
* Constructs a new CDL object.
*/
public 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.
* @param delimiter used in the file
* @return The value string, or null if empty.
* @throws JSONException if the quoted string is badly formed.
*/
private static String getValue(JSONTokener x, char delimiter) throws JSONException {
char c;
char q;
StringBuilder sb;
do {
c = x.next();
} while (c == ' ' || c == '\t');
if (c == 0) {
return null;
} else if (c == '"' || c == '\'') {
q = c;
sb = new StringBuilder();
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();
} else if (c == delimiter) {
x.back();
return "";
}
x.back();
return x.nextTo(delimiter);
}
/**
* 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 if a called function fails
*/
public static JSONArray rowToJSONArray(JSONTokener x) throws JSONException {
return rowToJSONArray(x, ',');
}
/**
* Produce a JSONArray of strings from a row of comma delimited values.
* @param x A JSONTokener of the source text.
* @param delimiter custom delimiter char
* @return A JSONArray of strings.
* @throws JSONException if a called function fails
*/
public static JSONArray rowToJSONArray(JSONTokener x, char delimiter) throws JSONException {
JSONArray ja = new JSONArray();
for (;;) {
String value = getValue(x,delimiter);
char c = x.next();
if (value == null ||
(ja.length() == 0 && value.length() == 0 && c != delimiter)) {
return null;
}
ja.put(value);
for (;;) {
if (c == delimiter) {
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 if a called function fails
*/
public static JSONObject rowToJSONObject(JSONArray names, JSONTokener x) throws JSONException {
return rowToJSONObject(names, x, ',');
}
/**
* 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.
* @param delimiter custom delimiter char
* @return A JSONObject combining the names and values.
* @throws JSONException if a called function fails
*/
public static JSONObject rowToJSONObject(JSONArray names, JSONTokener x, char delimiter) throws JSONException {
JSONArray ja = rowToJSONArray(x, delimiter);
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) {
return rowToString(ja, ',');
}
/**
* 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.
* @param delimiter custom delimiter char
* @return A string ending in NEWLINE.
*/
public static String rowToString(JSONArray ja, char delimiter) {
StringBuilder sb = new StringBuilder();
for (int i = 0; i < ja.length(); i += 1) {
if (i > 0) {
sb.append(delimiter);
}
Object object = ja.opt(i);
if (object != null) {
String string = object.toString();
if (string.length() > 0 && (string.indexOf(delimiter) >= 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 if a called function fails
*/
public static JSONArray toJSONArray(String string) throws JSONException {
return toJSONArray(string, ',');
}
/**
* 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.
* @param delimiter custom delimiter char
* @return A JSONArray of JSONObjects.
* @throws JSONException if a called function fails
*/
public static JSONArray toJSONArray(String string, char delimiter) throws JSONException {
return toJSONArray(new JSONTokener(string), delimiter);
}
/**
* 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 if a called function fails
*/
public static JSONArray toJSONArray(JSONTokener x) throws JSONException {
return toJSONArray(x, ',');
}
/**
* 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.
* @param delimiter custom delimiter char
* @return A JSONArray of JSONObjects.
* @throws JSONException if a called function fails
*/
public static JSONArray toJSONArray(JSONTokener x, char delimiter) throws JSONException {
return toJSONArray(rowToJSONArray(x, delimiter), x, delimiter);
}
/**
* 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 if a called function fails
*/
public static JSONArray toJSONArray(JSONArray names, String string) throws JSONException {
return toJSONArray(names, 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 string The comma delimited text.
* @param delimiter custom delimiter char
* @return A JSONArray of JSONObjects.
* @throws JSONException if a called function fails
*/
public static JSONArray toJSONArray(JSONArray names, String string, char delimiter) throws JSONException {
return toJSONArray(names, new JSONTokener(string), delimiter);
}
/**
* 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 if a called function fails
*/
public static JSONArray toJSONArray(JSONArray names, JSONTokener x) throws JSONException {
return toJSONArray(names, 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 x A JSONTokener of the source text.
* @param delimiter custom delimiter char
* @return A JSONArray of JSONObjects.
* @throws JSONException if a called function fails
*/
public static JSONArray toJSONArray(JSONArray names, JSONTokener x, char delimiter) throws JSONException {
if (names == null || names.length() == 0) {
return null;
}
JSONArray ja = new JSONArray();
for (;;) {
JSONObject jo = rowToJSONObject(names, x, delimiter);
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 if a called function fails
*/
public static String toString(JSONArray ja) throws JSONException {
return toString(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.
* @param delimiter custom delimiter char
* @return A comma delimited text.
* @throws JSONException if a called function fails
*/
public static String toString(JSONArray ja, char delimiter) throws JSONException {
JSONObject jo = ja.optJSONObject(0);
if (jo != null) {
JSONArray names = jo.names();
if (names != null) {
return rowToString(names, delimiter) + toString(names, ja, delimiter);
}
}
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 if a called function fails
*/
public static String toString(JSONArray names, JSONArray ja) throws JSONException {
return toString(names, ja, ',');
}
/**
* 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.
* @param delimiter custom delimiter char
* @return A comma delimited text.
* @throws JSONException if a called function fails
*/
public static String toString(JSONArray names, JSONArray ja, char delimiter) 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), delimiter));
}
}
return sb.toString();
}
}