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
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
|
#include "uscxml/config.h"
#include "uscxml/Common.h"
#include "uscxml/Message.h"
//#include "uscxml/Interpreter.h"
#include <DOM/SAX2DOM/SAX2DOM.hpp>
#include <SAX/helpers/CatchErrorHandler.hpp>
#include <glog/logging.h>
#include <boost/algorithm/string.hpp>
#ifdef HAS_STRING_H
#include <string.h>
#endif
extern "C" {
#include "jsmn.h" // minimal json parser
}
namespace uscxml {
static int _dataIndentation = 1;
Data::Data(const Arabica::DOM::Node<std::string>& dom) {
// we may need to convert some keys to arrays if we have the same name as an element
std::map<std::string, std::list<Data> > arrays;
// Interpreter::dump(dom);
if (dom.hasAttributes()) {
Arabica::DOM::NamedNodeMap<std::string> attributes = dom.getAttributes();
for (int i = 0; i < attributes.getLength(); i++) {
Arabica::DOM::Node<std::string> attribute = attributes.item(i);
// Interpreter::dump(attribute);
assert(attribute.getNodeType() == Arabica::DOM::Node_base::ATTRIBUTE_NODE);
std::string key = attribute.getLocalName();
std::string value = attribute.getNodeValue();
compound[key] = Data(value, VERBATIM);
}
}
if (dom.hasChildNodes()) {
Arabica::DOM::NodeList<std::string> children = dom.getChildNodes();
for (int i = 0; i < children.getLength(); i++) {
Arabica::DOM::Node<std::string> child = children.item(i);
// Interpreter::dump(child);
std::string key;
switch (child.getNodeType()) {
case Arabica::DOM::Node_base::ELEMENT_NODE:
key = TAGNAME(child);
break;
case Arabica::DOM::Node_base::ATTRIBUTE_NODE:
key = ((Arabica::DOM::Attr<std::string>)child).getName();
break;
case Arabica::DOM::Node_base::TEXT_NODE:
default:
break;
}
if (key.length() == 0)
continue;
if (compound.find(key) != compound.end()) {
// we already have such a key .. make it an array after we processed all children
arrays[key].push_back(Data(child));
} else {
compound[key] = Data(child);
}
}
} else {
atom = dom.getNodeValue();
type = VERBATIM;
}
std::map<std::string, std::list<Data> >::iterator arrayIter = arrays.begin();
while(arrayIter != arrays.end()) {
assert(compound.find(arrayIter->first) != compound.end());
Data arrayData;
arrays[arrayIter->first].push_front(compound[arrayIter->first]);
arrayData.array = arrays[arrayIter->first];
compound[arrayIter->first] = arrayData;
}
}
Arabica::DOM::Document<std::string> Data::toDocument() {
Arabica::DOM::DOMImplementation<std::string> domFactory = Arabica::SimpleDOM::DOMImplementation<std::string>::getDOMImplementation();
Arabica::DOM::Document<std::string> document = domFactory.createDocument("http://www.w3.org/2005/07/scxml", "message", 0);
Arabica::DOM::Element<std::string> scxmlMsg = document.getDocumentElement();
scxmlMsg.setPrefix("scxml");
scxmlMsg.setAttribute("version", "1.0");
if (compound.size() > 0 || array.size() > 0) {
Arabica::DOM::Element<std::string> payloadElem = document.createElementNS("http://www.w3.org/2005/07/scxml", "scxml:payload");
scxmlMsg.appendChild(payloadElem);
// we do not support nested attibutes
if (compound.size() > 0) {
std::map<std::string, Data>::iterator compoundIter = compound.begin();
while(compoundIter != compound.end()) {
if (compoundIter->second.atom.size() > 0) {
Arabica::DOM::Element<std::string> propertyElem = document.createElementNS("http://www.w3.org/2005/07/scxml", "scxml:property");
propertyElem.setAttribute("name", compoundIter->first);
Arabica::DOM::Text<std::string> textElem = document.createTextNode(compoundIter->second.atom);
propertyElem.appendChild(textElem);
payloadElem.appendChild(propertyElem);
}
compoundIter++;
}
}
}
return document;
}
Arabica::DOM::Node<std::string> Event::getFirstDOMElement() const {
Arabica::DOM::Node<std::string> data = dom.getDocumentElement().getFirstChild();
while (data) {
if (data.getNodeType() == Arabica::DOM::Node_base::TEXT_NODE) {
std::string trimmed = boost::trim_copy(data.getNodeValue());
if (trimmed.length() == 0) {
data = data.getNextSibling();
continue;
}
}
break;
}
return data;
}
Arabica::DOM::Document<std::string> Event::getStrippedDOM() const {
Arabica::DOM::DOMImplementation<std::string> domFactory = Arabica::SimpleDOM::DOMImplementation<std::string>::getDOMImplementation();
Arabica::DOM::Document<std::string> document = domFactory.createDocument("", "", 0);
if (dom) {
document.getDocumentElement().appendChild(document.importNode(getFirstDOMElement(), true));
}
return document;
}
Arabica::DOM::Document<std::string> Event::toDocument() {
Arabica::DOM::DOMImplementation<std::string> domFactory = Arabica::SimpleDOM::DOMImplementation<std::string>::getDOMImplementation();
Arabica::DOM::Document<std::string> document = data.toDocument();
Arabica::DOM::Element<std::string> scxmlMsg = document.getDocumentElement();
scxmlMsg.setAttribute("source", origin);
scxmlMsg.setAttribute("name", name);
return document;
}
Arabica::DOM::Document<std::string> SendRequest::toDocument() {
Arabica::DOM::DOMImplementation<std::string> domFactory = Arabica::SimpleDOM::DOMImplementation<std::string>::getDOMImplementation();
Arabica::DOM::Document<std::string> document = Event::toDocument();
Arabica::DOM::Element<std::string> scxmlMsg = document.getDocumentElement();
// add params and namelist
if (params.size() > 0 || namelist.size() > 0) {
Arabica::DOM::NodeList<std::string> payload = scxmlMsg.getElementsByTagName("scxml:payload");
if (payload.getLength() == 0) {
Arabica::DOM::Element<std::string> payloadElem = document.createElementNS("http://www.w3.org/2005/07/scxml", "scxml:payload");
scxmlMsg.appendChild(payloadElem);
}
Arabica::DOM::Node<std::string> payloadElem = scxmlMsg.getElementsByTagName("scxml:payload").item(0);
// add parameters
std::multimap<std::string, std::string>::iterator paramIter = params.begin();
while(paramIter != params.end()) {
Arabica::DOM::Element<std::string> propertyElem = document.createElementNS("http://www.w3.org/2005/07/scxml", "scxml:property");
propertyElem.setAttribute("name", paramIter->first);
Arabica::DOM::Text<std::string> textElem = document.createTextNode(paramIter->second);
propertyElem.appendChild(textElem);
payloadElem.appendChild(propertyElem);
paramIter++;
}
// add namelist elements
std::map<std::string, std::string>::iterator namelistIter = namelist.begin();
while(namelistIter != namelist.end()) {
Arabica::DOM::Element<std::string> propertyElem = document.createElementNS("http://www.w3.org/2005/07/scxml", "scxml:property");
propertyElem.setAttribute("name", namelistIter->first);
Arabica::DOM::Text<std::string> textElem = document.createTextNode(namelistIter->second);
propertyElem.appendChild(textElem);
payloadElem.appendChild(propertyElem);
namelistIter++;
}
}
scxmlMsg.setAttribute("sendid", sendid);
return document;
}
Arabica::DOM::Document<std::string> InvokeRequest::toDocument() {
Arabica::DOM::DOMImplementation<std::string> domFactory = Arabica::SimpleDOM::DOMImplementation<std::string>::getDOMImplementation();
Arabica::DOM::Document<std::string> document = Event::toDocument();
Arabica::DOM::Element<std::string> scxmlMsg = document.getDocumentElement();
scxmlMsg.setAttribute("invokeid", invokeid);
return document;
}
Data Data::fromXML(const std::string& xmlString) {
return Data();
}
Data Data::fromJSON(const std::string& jsonString) {
Data data;
std::string trimmed = jsonString;
boost::trim(trimmed);
if (trimmed.length() == 0)
return data;
if (trimmed.find_first_of("{[") != 0)
return data;
jsmn_parser p;
jsmntok_t* t = NULL;
// we do not know the number of tokens beforehand, start with something sensible and increase
int rv;
int frac = 16; // length/token ratio
do {
jsmn_init(&p);
frac /= 2;
int nrTokens = trimmed.size() / frac;
if (t != NULL) {
free(t);
// LOG(INFO) << "Increasing JSON length to token ratio to 1/" << frac;
}
t = (jsmntok_t*)malloc(nrTokens * sizeof(jsmntok_t) + 1);
if (t == NULL) {
LOG(ERROR) << "Cannot parse JSON, ran out of memory!";
return data;
}
memset(t, 0, nrTokens * sizeof(jsmntok_t) + 1);
rv = jsmn_parse(&p, trimmed.c_str(), t, nrTokens);
} while (rv == JSMN_ERROR_NOMEM && frac > 1);
if (rv != 0) {
switch (rv) {
case JSMN_ERROR_NOMEM:
LOG(ERROR) << "Cannot parse JSON, not enough tokens were provided!";
break;
case JSMN_ERROR_INVAL:
LOG(ERROR) << "Cannot parse JSON, invalid character inside JSON string!";
break;
case JSMN_ERROR_PART:
LOG(ERROR) << "Cannot parse JSON, the string is not a full JSON packet, more bytes expected!";
break;
default:
break;
}
free(t);
return data;
}
if (t[0].end != trimmed.length())
return data;
std::list<Data*> dataStack;
std::list<jsmntok_t> tokenStack;
dataStack.push_back(&data);
size_t currTok = 0;
do {
switch (t[currTok].type) {
case JSMN_STRING:
dataStack.back()->type = Data::VERBATIM;
case JSMN_PRIMITIVE:
dataStack.back()->atom = trimmed.substr(t[currTok].start, t[currTok].end - t[currTok].start);
dataStack.pop_back();
currTok++;
break;
case JSMN_OBJECT:
case JSMN_ARRAY:
tokenStack.push_back(t[currTok]);
currTok++;
break;
}
// there are no more tokens
if (t[currTok].end == 0 || tokenStack.empty())
break;
// next token starts after current one => pop
if (t[currTok].end > tokenStack.back().end)
tokenStack.pop_back();
if (tokenStack.back().type == JSMN_OBJECT && (t[currTok].type == JSMN_PRIMITIVE || t[currTok].type == JSMN_STRING)) {
// grab key and push new data
dataStack.push_back(&(dataStack.back()->compound[trimmed.substr(t[currTok].start, t[currTok].end - t[currTok].start)]));
currTok++;
}
if (tokenStack.back().type == JSMN_ARRAY) {
// push new index
dataStack.back()->array.push_back(Data());
dataStack.push_back(&(dataStack.back()->array.back()));
}
} while (true);
free(t);
return data;
}
Event Event::fromXML(const std::string& xmlString) {
Arabica::SAX2DOM::Parser<std::string> eventParser;
Arabica::SAX::CatchErrorHandler<std::string> errorHandler;
eventParser.setErrorHandler(errorHandler);
std::istringstream is(xmlString);
Arabica::SAX::InputSource<std::string> inputSource;
inputSource.setByteStream(is);
Event event;
if(eventParser.parse(inputSource) && eventParser.getDocument().hasChildNodes()) {
Arabica::DOM::Element<std::string> scxmlMsg = eventParser.getDocument().getDocumentElement();
if (HAS_ATTR(scxmlMsg, "name"))
event.name = ATTR(scxmlMsg, "name");
if (HAS_ATTR(scxmlMsg, "sendid"))
event.sendid = ATTR(scxmlMsg, "sendid");
Arabica::DOM::NodeList<std::string> payloads = scxmlMsg.getElementsByTagName("scxml:payload");
if (payloads.getLength() > 0) {
Arabica::DOM::Node<std::string> payload = payloads.item(0);
if (payload.getNodeType() == Arabica::DOM::Node_base::ELEMENT_NODE) {
Arabica::DOM::Element<std::string> payloadElem = (Arabica::DOM::Element<std::string>)payload;
Arabica::DOM::NodeList<std::string> properties = payloadElem.getElementsByTagName("scxml:property");
if (properties.getLength() > 0) {
for (int i = 0; i < properties.getLength(); i++) {
if (HAS_ATTR(properties.item(i), "name")) {
std::string key = ATTR(properties.item(i), "name");
std::string value;
Arabica::DOM::NodeList<std::string> childs = properties.item(i).getChildNodes();
for (int j = 0; j < childs.getLength(); j++) {
if (childs.item(j).getNodeType() == Arabica::DOM::Node_base::TEXT_NODE) {
value = childs.item(j).getNodeValue();
break;
}
}
event.data.compound[key] = Data(value, Data::VERBATIM);
}
}
}
}
}
}
return event;
}
SendRequest SendRequest::fromXML(const std::string& xmlString) {
Event::fromXML(xmlString);
return SendRequest();
}
InvokeRequest InvokeRequest::fromXML(const std::string& xmlString) {
Event::fromXML(xmlString);
return InvokeRequest();
}
#ifndef SWIGJAVA
std::ostream& operator<< (std::ostream& os, const InvokeRequest& invokeReq) {
std::string indent;
for (int i = 0; i < _dataIndentation; i++) {
indent += " ";
}
os << indent << "InvokeReq" << (invokeReq.autoForward ? " with autoforward" : "") << std::endl;
if (invokeReq.type.size() > 0)
os << indent << " type: " << invokeReq.type << std::endl;
if (invokeReq.src.size() > 0)
os<< indent << " src: " << invokeReq.src << std::endl;
if (invokeReq.namelist.size() > 0) {
os << indent << " namelist: " << std::endl;
InvokeRequest::namelist_t::const_iterator namelistIter = invokeReq.namelist.begin();
while(namelistIter != invokeReq.namelist.end()) {
os << indent << " " << namelistIter->first << ": " << namelistIter->second << std::endl;
namelistIter++;
}
}
if (invokeReq.params.size() > 0) {
os << indent << " params: " << std::endl;
SendRequest::params_t::const_iterator paramIter = invokeReq.params.begin();
while(paramIter != invokeReq.params.end()) {
os << indent << " " << paramIter->first << ": " << paramIter->second << std::endl;
paramIter++;
}
}
if (invokeReq.content.size() > 0)
os << indent << " content: " << invokeReq.content << std::endl;
_dataIndentation++;
os << (Event)invokeReq;
_dataIndentation--;
return os;
}
#endif
#ifndef SWIGJAVA
std::ostream& operator<< (std::ostream& os, const SendRequest& sendReq) {
std::string indent;
for (int i = 0; i < _dataIndentation; i++) {
indent += " ";
}
os << indent<< "SendReq" << std::endl;
if (sendReq.target.size() > 0)
os << indent << " target: " << sendReq.target << std::endl;
if (sendReq.type.size() > 0)
os << indent << " type: " << sendReq.type << std::endl;
if (sendReq.delayMs > 0)
os<< indent << " delay: " << sendReq.delayMs << std::endl;
if (sendReq.namelist.size() > 0) {
os << indent << " namelist: " << std::endl;
SendRequest::namelist_t::const_iterator namelistIter = sendReq.namelist.begin();
while(namelistIter != sendReq.namelist.end()) {
os << indent << " " << namelistIter->first << ": " << namelistIter->second << std::endl;
namelistIter++;
}
}
if (sendReq.params.size() > 0) {
os << indent << " params: " << std::endl;
SendRequest::params_t::const_iterator paramIter = sendReq.params.begin();
while(paramIter != sendReq.params.end()) {
os << indent << " " << paramIter->first << ": " << paramIter->second << std::endl;
paramIter++;
}
}
if (sendReq.content.size() > 0)
os << indent << " content: " << sendReq.content << std::endl;
_dataIndentation++;
os << (Event)sendReq;
_dataIndentation--;
return os;
}
#endif
#ifndef SWIGJAVA
std::ostream& operator<< (std::ostream& os, const Event& event) {
std::string indent;
for (int i = 0; i < _dataIndentation; i++) {
indent += " ";
}
os << indent << (event.type == Event::EXTERNAL ? "External" : "Internal") << " Event " << (event.dom ? "with DOM attached" : "") << std::endl;
if (event.name.size() > 0)
os << indent << " name: " << event.name << std::endl;
if (event.origin.size() > 0)
os << indent << " origin: " << event.origin << std::endl;
if (event.origintype.size() > 0)
os << indent << " origintype: " << event.origintype << std::endl;
_dataIndentation++;
os << indent << " data: " << event.data << std::endl;
_dataIndentation--;
return os;
}
#endif
#ifndef SWIGJAVA
std::ostream& operator<< (std::ostream& os, const Data& data) {
std::string indent;
for (int i = 0; i < _dataIndentation; i++) {
indent += " ";
}
if (false) {
} else if (data.compound.size() > 0) {
int longestKey = 0;
std::map<std::string, Data>::const_iterator compoundIter = data.compound.begin();
while(compoundIter != data.compound.end()) {
if (compoundIter->first.size() > longestKey)
longestKey = compoundIter->first.size();
compoundIter++;
}
std::string keyPadding;
for (unsigned int i = 0; i < longestKey; i++)
keyPadding += " ";
std::string seperator;
os << std::endl << indent << "{";
compoundIter = data.compound.begin();
while(compoundIter != data.compound.end()) {
os << seperator << std::endl << indent << " \"" << compoundIter->first << "\": " << keyPadding.substr(0, longestKey - compoundIter->first.size());
_dataIndentation += 1;
os << compoundIter->second;
_dataIndentation -= 1;
seperator = ", ";
compoundIter++;
}
os << std::endl << indent << "}";
} else if (data.array.size() > 0) {
std::string seperator;
os << std::endl << indent << "[";
std::list<Data>::const_iterator arrayIter = data.array.begin();
while(arrayIter != data.array.end()) {
_dataIndentation += 1;
os << seperator << *arrayIter;
_dataIndentation -= 1;
seperator = ", ";
arrayIter++;
}
os << std::endl << indent << "]";
} else if (data.atom.size() > 0) {
if (data.type == Data::VERBATIM) {
os << "\"" << data.atom << "\"";
} else {
os << data.atom;
}
} else {
os << "undefined";
}
return os;
}
#endif
}
|